Hi,
Here's a series that creates some extra infrastructure specifically
targeted at HDMI controllers.
The idea behind this series came from a recent discussion on IRC during
which we discussed infoframes generation of i915 vs everything else.
Infoframes generation code still requires some decent boilerplate, with
each driver doing some variation of it.
In parallel, while working on vc4, we ended up converting a lot of i915
logic (mostly around format / bpc selection, and scrambler setup) to
apply on top of a driver that relies only on helpers.
While currently sitting in the vc4 driver, none of that logic actually
relies on any driver or hardware-specific behaviour.
The only missing piece to make it shareable are a bunch of extra
variables stored in a state (current bpc, format, RGB range selection,
etc.).
The initial implementation was relying on some generic subclass of
drm_connector to address HDMI connectors, with a bunch of helpers that
will take care of all the "HDMI Spec" related code. Scrambler setup is
missing at the moment but can easily be plugged in.
The feedback was that creating a connector subclass like was done for
writeback would prevent the adoption of those helpers since it couldn't
be used in all situations (like when the connector driver can implement
multiple output) and required more churn to cast between the
drm_connector and its subclass. The decision was thus to provide a set
of helper and to store the required variables in drm_connector and
drm_connector_state. This what has been implemented now.
Hans Verkuil also expressed interest in implementing a mechanism in v4l2
to retrieve infoframes from HDMI receiver and implementing a tool to
decode (and eventually check) infoframes. His current work on
edid-decode to enable that based on that series can be found here:
https://git.linuxtv.org/hverkuil/edid-decode.git/log/?h=hverkuil
And some more context here:
https://lore.kernel.org/dri-devel/[email protected]/
This series thus leverages the infoframe generation code to expose it
through debugfs.
I also used the occasion to unit-test everything but the infoframe
generation, which can come later once I get a proper understanding of
what the infoframe are supposed to look like. This required to add some
extra kunit helpers and infrastructure to have multiple EDIDs and allow
each test to run with a particular set of capabilities.
This entire series has been tested on a Pi4, passes all its unittests
(125 new tests), and has only been build-tested for sunxi and rockchip.
Let me know what you think,
Maxime
To: Maarten Lankhorst <[email protected]>
To: Thomas Zimmermann <[email protected]>
To: David Airlie <[email protected]>
To: Daniel Vetter <[email protected]>
To: Jonathan Corbet <[email protected]>
To: Sandy Huang <[email protected]>
To: Heiko Stübner <[email protected]>
To: Chen-Yu Tsai <[email protected]>
To: Jernej Skrabec <[email protected]>
To: Samuel Holland <[email protected]>
To: Andy Yan <[email protected]>
Cc: Hans Verkuil <[email protected]>
Cc: Sebastian Wick <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Maxime Ripard <[email protected]>
Changes in v13:
- Adapt to latest Kconfig helper changes
- Fixes for sun4i and rockchip
- Rebase on current drm-misc-next
- Link to v12: https://lore.kernel.org/r/[email protected]
Changes in v12:
- Rebase on current drm-misc-next
- Remove VIC check in clock rate computation function
- Invert RGB range logic to signal limited range instead of full like
before
- Link to v11: https://lore.kernel.org/r/[email protected]
Changes in v11:
- Turn the HDMI state helpers into a separate C file under
drivers/gpu/drm/display
- Rework the Kconfig options too to prevent configuration breakages.
- Link to v10: https://lore.kernel.org/r/[email protected]
Changes in v10:
- Drop the YUV422 fallback, and adjust the tests accordingly
- Fix HDMI infoframe handling
- Remove the infoframe copy in drm_connector
- Add a TODO that drm_hdmi_avi_infoframe_quant_range() only works for
RGB
- Add a TODO for the YUV420 selection
- Fix a few bugs in vc4
- Change the logging from driver to KMS for the helpers
- Drop UPDATE_INFOFRAME macro
- Add infoframe code logging
- Document the selection of 8bpc for VIC1
- Rename state to conn_state where relevant
- Link to v9: https://lore.kernel.org/r/[email protected]
Changes in v9:
- Generate every infoframe but the HDMI vendor one if has_hdmi_infoframe
isn't set
- Fix typos in the doc
- Removed undef for inexisting macro
- Improve the Broadcast RGB sanitation test
- Make EDID bytes array const
- Link to v8: https://lore.kernel.org/r/[email protected]
Changes in v8:
- Drop applied patches
- Drop the YUV limited range mention in the Broadcast RGB documentation
- Rephrase the vc4_dummy_plane removal commit log
- Move infroframe mutex initialisation to the main drm_connector_init
function to make sure it's always initialised
- Link to v7: https://lore.kernel.org/r/[email protected]
Changes in v7:
- Rebased on top of current next
- Only consider the Broadcast RGB property if the output format is RGB,
and use a limited range otherwise
- Document the fact that Broadcast RGB only applies if the output format
is RGB
- Add some test to make sure we always get a limited range if we have a
YCbCr output format.
- Link to v6: https://lore.kernel.org/r/[email protected]
Changes in v6:
- Rebased on top of current next
- Split the tests into separate patches
- Improve the Broadcast RGB documentation
- Link to v5: https://lore.kernel.org/r/[email protected]
Changes in v5:
- Dropped the connector init arg checking patch, and the related kunit
tests
- Dropped HDMI Vendor infoframes in rockchip inno_hdmi
- Fixed the build warnings
- Link to v4: https://lore.kernel.org/r/[email protected]
Changes in v4:
- Create unit tests for everything but infoframes
- Fix a number of bugs identified by the unit tests
- Rename DRM (Dynamic Range and Mastering) infoframe file to HDR_DRM
- Drop RFC status
- Link to v3: https://lore.kernel.org/r/[email protected]
Changes in v3:
- Made sure the series work on the RaspberryPi4
- Handle YUV420 in the char clock rate computation
- Use the maximum bpc value the connector allows at reset
- Expose the RGB Limited vs Full Range value in the connector state
instead of through a helper
- Fix Broadcast RGB documentation
- Add more debug logging
- Small fixes here and there
- Link to v2: https://lore.kernel.org/r/[email protected]
Changes in v2:
- Change from a subclass to a set of helpers for drm_connector and
drm_connector state
- Don't assume that all drivers support RGB, YUV420 and YUV422 but make
them provide a bitfield instead.
- Don't assume that all drivers support the Broadcast RGB property but
make them call the registration helper.
- Document the Broacast RGB property
- Convert the inno_hdmi and sun4i_hdmi driver.
- Link to v1: https://lore.kernel.org/r/[email protected]
---
Maxime Ripard (28):
drm/connector: Introduce an HDMI connector initialization function
drm/mode_object: Export drm_mode_obj_find_prop_id for tests
drm/tests: connector: Add tests for drmm_connector_hdmi_init
drm/connector: hdmi: Create an HDMI sub-state
drm/connector: hdmi: Add output BPC to the connector state
drm/tests: Add output bpc tests
drm/connector: hdmi: Add support for output format
drm/tests: Add output formats tests
drm/display: hdmi: Add HDMI compute clock helper
drm/tests: Add HDMI TDMS character rate tests
drm/connector: hdmi: Calculate TMDS character rate
drm/tests: Add TDMS character rate connector state tests
drm/connector: hdmi: Add custom hook to filter TMDS character rate
drm/tests: Add HDMI connector rate filter hook tests
drm/connector: hdmi: Compute bpc and format automatically
drm/tests: Add HDMI connector bpc and format tests
drm/connector: hdmi: Add Broadcast RGB property
drm/tests: Add tests for Broadcast RGB property
drm/connector: hdmi: Add RGB Quantization Range to the connector state
drm/tests: Add RGB Quantization tests
drm/connector: hdmi: Add Infoframes generation
drm/tests: Add infoframes test
drm/connector: hdmi: Create Infoframe DebugFS entries
drm/vc4: hdmi: Switch to HDMI connector
drm/vc4: tests: Remove vc4_dummy_plane structure
drm/vc4: tests: Convert to plane creation helper
drm/rockchip: inno_hdmi: Switch to HDMI connector
drm/sun4i: hdmi: Switch to HDMI connector
Documentation/gpu/kms-properties.csv | 1 -
drivers/gpu/drm/Kconfig | 1 +
drivers/gpu/drm/display/Kconfig | 7 +
drivers/gpu/drm/display/Makefile | 2 +
drivers/gpu/drm/display/drm_hdmi_helper.c | 57 +
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 698 ++++++++
drivers/gpu/drm/drm_atomic.c | 11 +
drivers/gpu/drm/drm_atomic_uapi.c | 4 +
drivers/gpu/drm/drm_connector.c | 194 +++
drivers/gpu/drm/drm_debugfs.c | 152 ++
drivers/gpu/drm/drm_mode_object.c | 1 +
drivers/gpu/drm/rockchip/Kconfig | 3 +
drivers/gpu/drm/rockchip/inno_hdmi.c | 153 +-
drivers/gpu/drm/sun4i/Kconfig | 3 +
drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 84 +-
drivers/gpu/drm/tests/Makefile | 1 +
drivers/gpu/drm/tests/drm_connector_test.c | 1032 +++++++++++-
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 1743 ++++++++++++++++++++
drivers/gpu/drm/tests/drm_kunit_edid.h | 482 ++++++
drivers/gpu/drm/vc4/Kconfig | 1 +
drivers/gpu/drm/vc4/tests/vc4_mock.c | 6 +-
drivers/gpu/drm/vc4/tests/vc4_mock.h | 9 +-
drivers/gpu/drm/vc4/tests/vc4_mock_plane.c | 44 +-
drivers/gpu/drm/vc4/vc4_hdmi.c | 644 +-------
drivers/gpu/drm/vc4/vc4_hdmi.h | 44 +-
drivers/gpu/drm/vc4/vc4_hdmi_phy.c | 6 +-
include/drm/display/drm_hdmi_helper.h | 4 +
include/drm/display/drm_hdmi_state_helper.h | 23 +
include/drm/drm_connector.h | 229 +++
29 files changed, 4862 insertions(+), 777 deletions(-)
---
base-commit: 533db32499de1618443b2249bc20011cd5abc9d9
change-id: 20230814-kms-hdmi-connector-state-616787e67927
Best regards,
--
Maxime Ripard <[email protected]>
We'll need to use drm_mode_obj_find_prop_id() for kunit tests to make
sure a given property has been properly created. Let's export it for
tests only.
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/drm_mode_object.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/drm_mode_object.c b/drivers/gpu/drm/drm_mode_object.c
index 0e8355063eee..df4cc0e8e263 100644
--- a/drivers/gpu/drm/drm_mode_object.c
+++ b/drivers/gpu/drm/drm_mode_object.c
@@ -476,10 +476,11 @@ struct drm_property *drm_mode_obj_find_prop_id(struct drm_mode_object *obj,
if (obj->properties->properties[i]->base.id == prop_id)
return obj->properties->properties[i];
return NULL;
}
+EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_mode_obj_find_prop_id);
static int set_property_legacy(struct drm_mode_object *obj,
struct drm_property *prop,
uint64_t prop_value)
{
--
2.45.0
A lot of the various HDMI drivers duplicate some logic that depends on
the HDMI spec itself and not really a particular hardware
implementation.
Output BPC or format selection, infoframe generation are good examples
of such areas.
This creates a lot of boilerplate, with a lot of variations, which makes
it hard for userspace to rely on, and makes it difficult to get it right
for drivers.
In the next patches, we'll add a lot of infrastructure around the
drm_connector and drm_connector_state structures, which will allow to
abstract away the duplicated logic. This infrastructure comes with a few
requirements though, and thus we need a new initialization function.
Hopefully, this will make drivers simpler to handle, and their behaviour
more consistent.
Reviewed-by: Dave Stevenson <[email protected]>
Reviewed-by: Sui Jingfeng <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/drm_connector.c | 39 +++++++++++++++++++++++++++++++++++++++
include/drm/drm_connector.h | 5 +++++
2 files changed, 44 insertions(+)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index b0516505f7ae..d9961cce8245 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -450,10 +450,49 @@ int drmm_connector_init(struct drm_device *dev,
return 0;
}
EXPORT_SYMBOL(drmm_connector_init);
+/**
+ * drmm_connector_hdmi_init - Init a preallocated HDMI connector
+ * @dev: DRM device
+ * @connector: A pointer to the HDMI connector to init
+ * @funcs: callbacks for this connector
+ * @connector_type: user visible type of the connector
+ * @ddc: optional pointer to the associated ddc adapter
+ *
+ * Initialises a preallocated HDMI connector. Connectors can be
+ * subclassed as part of driver connector objects.
+ *
+ * Cleanup is automatically handled with a call to
+ * drm_connector_cleanup() in a DRM-managed action.
+ *
+ * The connector structure should be allocated with drmm_kzalloc().
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drmm_connector_hdmi_init(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct drm_connector_funcs *funcs,
+ int connector_type,
+ struct i2c_adapter *ddc)
+{
+ int ret;
+
+ if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector_type == DRM_MODE_CONNECTOR_HDMIB))
+ return -EINVAL;
+
+ ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+EXPORT_SYMBOL(drmm_connector_hdmi_init);
+
/**
* drm_connector_attach_edid_property - attach edid property.
* @connector: the connector
*
* Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index fe88d7fc6b8f..4491c4c2fb6e 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1902,10 +1902,15 @@ int drm_connector_init_with_ddc(struct drm_device *dev,
int drmm_connector_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc);
+int drmm_connector_hdmi_init(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct drm_connector_funcs *funcs,
+ int connector_type,
+ struct i2c_adapter *ddc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
int drm_connector_register(struct drm_connector *connector);
void drm_connector_unregister(struct drm_connector *connector);
int drm_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
--
2.45.0
We just introduced a new initialization function for our connectors, so
let's build a kunit test suite for it as well.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_connector_test.c | 123 +++++++++++++++++++++++++++++
1 file changed, 123 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 44f82ed2a958..261d4109946d 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -170,10 +170,132 @@ static struct kunit_suite drmm_connector_init_test_suite = {
.name = "drmm_connector_init",
.init = drm_test_connector_init,
.test_cases = drmm_connector_init_tests,
};
+/*
+ * Test that the registration of a bog standard connector works as
+ * expected and doesn't report any error.
+ */
+static void drm_test_connector_hdmi_init_valid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector without a DDC adapter
+ * doesn't report any error.
+ */
+static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ NULL);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+/*
+ * Test that the registration of an HDMI connector with an HDMI
+ * connector type succeeds.
+ */
+static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ unsigned int connector_type = *(unsigned int *)test->param_value;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ connector_type,
+ &priv->ddc);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+}
+
+static const unsigned int drm_connector_hdmi_init_type_valid_tests[] = {
+ DRM_MODE_CONNECTOR_HDMIA,
+ DRM_MODE_CONNECTOR_HDMIB,
+};
+
+static void drm_connector_hdmi_init_type_desc(const unsigned int *type, char *desc)
+{
+ sprintf(desc, "%s", drm_get_connector_type_name(*type));
+}
+
+KUNIT_ARRAY_PARAM(drm_connector_hdmi_init_type_valid,
+ drm_connector_hdmi_init_type_valid_tests,
+ drm_connector_hdmi_init_type_desc);
+
+/*
+ * Test that the registration of an HDMI connector with an !HDMI
+ * connector type fails.
+ */
+static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ unsigned int connector_type = *(unsigned int *)test->param_value;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ connector_type,
+ &priv->ddc);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+static const unsigned int drm_connector_hdmi_init_type_invalid_tests[] = {
+ DRM_MODE_CONNECTOR_Unknown,
+ DRM_MODE_CONNECTOR_VGA,
+ DRM_MODE_CONNECTOR_DVII,
+ DRM_MODE_CONNECTOR_DVID,
+ DRM_MODE_CONNECTOR_DVIA,
+ DRM_MODE_CONNECTOR_Composite,
+ DRM_MODE_CONNECTOR_SVIDEO,
+ DRM_MODE_CONNECTOR_LVDS,
+ DRM_MODE_CONNECTOR_Component,
+ DRM_MODE_CONNECTOR_9PinDIN,
+ DRM_MODE_CONNECTOR_DisplayPort,
+ DRM_MODE_CONNECTOR_TV,
+ DRM_MODE_CONNECTOR_eDP,
+ DRM_MODE_CONNECTOR_VIRTUAL,
+ DRM_MODE_CONNECTOR_DSI,
+ DRM_MODE_CONNECTOR_DPI,
+ DRM_MODE_CONNECTOR_WRITEBACK,
+ DRM_MODE_CONNECTOR_SPI,
+ DRM_MODE_CONNECTOR_USB,
+};
+
+KUNIT_ARRAY_PARAM(drm_connector_hdmi_init_type_invalid,
+ drm_connector_hdmi_init_type_invalid_tests,
+ drm_connector_hdmi_init_type_desc);
+
+static struct kunit_case drmm_connector_hdmi_init_tests[] = {
+ KUNIT_CASE(drm_test_connector_hdmi_init_valid),
+ KUNIT_CASE(drm_test_connector_hdmi_init_null_ddc),
+ KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_valid,
+ drm_connector_hdmi_init_type_valid_gen_params),
+ KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_invalid,
+ drm_connector_hdmi_init_type_invalid_gen_params),
+ { }
+};
+
+static struct kunit_suite drmm_connector_hdmi_init_test_suite = {
+ .name = "drmm_connector_hdmi_init",
+ .init = drm_test_connector_init,
+ .test_cases = drmm_connector_hdmi_init_tests,
+};
+
struct drm_get_tv_mode_from_name_test {
const char *name;
enum drm_connector_tv_mode expected_mode;
};
@@ -234,10 +356,11 @@ static struct kunit_suite drm_get_tv_mode_from_name_test_suite = {
.name = "drm_get_tv_mode_from_name",
.test_cases = drm_get_tv_mode_from_name_tests,
};
kunit_test_suites(
+ &drmm_connector_hdmi_init_test_suite,
&drmm_connector_init_test_suite,
&drm_get_tv_mode_from_name_test_suite
);
MODULE_AUTHOR("Maxime Ripard <[email protected]>");
--
2.45.0
The next features we will need to share across drivers will need to
store some parameters for drivers to use, such as the selected output
format.
Let's create a new connector sub-state dedicated to HDMI controllers,
that will eventually store everything we need.
Reviewed-by: Dave Stevenson <[email protected]>
Reviewed-by: Sui Jingfeng <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/Kconfig | 7 +++++
drivers/gpu/drm/display/Makefile | 2 ++
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 41 +++++++++++++++++++++++++
include/drm/display/drm_hdmi_state_helper.h | 16 ++++++++++
include/drm/drm_connector.h | 7 +++++
5 files changed, 73 insertions(+)
diff --git a/drivers/gpu/drm/display/Kconfig b/drivers/gpu/drm/display/Kconfig
index 864a6488bfdf..14114b597ef4 100644
--- a/drivers/gpu/drm/display/Kconfig
+++ b/drivers/gpu/drm/display/Kconfig
@@ -68,5 +68,12 @@ config DRM_DISPLAY_HDCP_HELPER
config DRM_DISPLAY_HDMI_HELPER
bool
depends on DRM_DISPLAY_HELPER
help
DRM display helpers for HDMI.
+
+config DRM_DISPLAY_HDMI_STATE_HELPER
+ bool
+ depends on DRM_DISPLAY_HELPER
+ depends on DRM_DISPLAY_HDMI_HELPER
+ help
+ DRM KMS state helpers for HDMI.
diff --git a/drivers/gpu/drm/display/Makefile b/drivers/gpu/drm/display/Makefile
index 17d2cc73ff56..629df2f4d322 100644
--- a/drivers/gpu/drm/display/Makefile
+++ b/drivers/gpu/drm/display/Makefile
@@ -12,9 +12,11 @@ drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_TUNNEL) += \
drm_dp_tunnel.o
drm_display_helper-$(CONFIG_DRM_DISPLAY_HDCP_HELPER) += drm_hdcp_helper.o
drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_HELPER) += \
drm_hdmi_helper.o \
drm_scdc_helper.o
+drm_display_helper-$(CONFIG_DRM_DISPLAY_HDMI_STATE_HELPER) += \
+ drm_hdmi_state_helper.o
drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CHARDEV) += drm_dp_aux_dev.o
drm_display_helper-$(CONFIG_DRM_DISPLAY_DP_AUX_CEC) += drm_dp_cec.o
obj-$(CONFIG_DRM_DISPLAY_HELPER) += drm_display_helper.o
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
new file mode 100644
index 000000000000..1e92c1108d23
--- /dev/null
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_connector.h>
+
+#include <drm/display/drm_hdmi_state_helper.h>
+
+/**
+ * __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources
+ * @connector: DRM connector
+ * @new_conn_state: connector state to reset
+ *
+ * Initializes all HDMI resources from a @drm_connector_state without
+ * actually allocating it. This is useful for HDMI drivers, in
+ * combination with __drm_atomic_helper_connector_reset() or
+ * drm_atomic_helper_connector_reset().
+ */
+void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
+ struct drm_connector_state *new_conn_state)
+{
+}
+EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
+
+/**
+ * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
+ * @connector: DRM Connector
+ * @state: the DRM State object
+ *
+ * Provides a default connector state check handler for HDMI connectors.
+ * Checks that a desired connector update is valid, and updates various
+ * fields of derived state.
+ *
+ * RETURNS:
+ * Zero on success, or an errno code otherwise.
+ */
+int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ return 0;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
diff --git a/include/drm/display/drm_hdmi_state_helper.h b/include/drm/display/drm_hdmi_state_helper.h
new file mode 100644
index 000000000000..6021983e2602
--- /dev/null
+++ b/include/drm/display/drm_hdmi_state_helper.h
@@ -0,0 +1,16 @@
+#/* SPDX-License-Identifier: MIT */
+
+#ifndef DRM_HDMI_STATE_HELPER_H_
+#define DRM_HDMI_STATE_HELPER_H_
+
+struct drm_atomic_state;
+struct drm_connector;
+struct drm_connector_state;
+
+void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
+ struct drm_connector_state *new_conn_state);
+
+int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
+ struct drm_atomic_state *state);
+
+#endif // DRM_HDMI_STATE_HELPER_H_
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 4491c4c2fb6e..000a2a156619 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1029,10 +1029,17 @@ struct drm_connector_state {
/**
* @hdr_output_metadata:
* DRM blob property for HDR output metadata
*/
struct drm_property_blob *hdr_output_metadata;
+
+ /**
+ * @hdmi: HDMI-related variable and properties. Filled by
+ * @drm_atomic_helper_connector_hdmi_check().
+ */
+ struct {
+ } hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
*
--
2.45.0
We'll add automatic selection of the output BPC in a following patch,
but let's add it to the HDMI connector state already.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 20 ++++++++++++++++++++
drivers/gpu/drm/drm_atomic.c | 5 +++++
drivers/gpu/drm/drm_connector.c | 20 +++++++++++++++++++-
drivers/gpu/drm/tests/drm_connector_test.c | 12 ++++++++----
include/drm/drm_connector.h | 12 +++++++++++-
5 files changed, 63 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 1e92c1108d23..82293d93b5f8 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -16,10 +16,14 @@
* drm_atomic_helper_connector_reset().
*/
void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
struct drm_connector_state *new_conn_state)
{
+ unsigned int max_bpc = connector->max_bpc;
+
+ new_conn_state->max_bpc = max_bpc;
+ new_conn_state->max_requested_bpc = max_bpc;
}
EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
/**
* drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
@@ -34,8 +38,24 @@ EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
* Zero on success, or an errno code otherwise.
*/
int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
struct drm_atomic_state *state)
{
+ struct drm_connector_state *old_conn_state =
+ drm_atomic_get_old_connector_state(state, connector);
+ struct drm_connector_state *new_conn_state =
+ drm_atomic_get_new_connector_state(state, connector);
+
+ if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc) {
+ struct drm_crtc *crtc = new_conn_state->crtc;
+ struct drm_crtc_state *crtc_state;
+
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ if (IS_ERR(crtc_state))
+ return PTR_ERR(crtc_state);
+
+ crtc_state->mode_changed = true;
+ }
+
return 0;
}
EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index a91737adf8e7..4e11cfb4518b 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1141,10 +1141,15 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
drm_printf(p, "\tcrtc=%s\n", state->crtc ? state->crtc->name : "(null)");
drm_printf(p, "\tself_refresh_aware=%d\n", state->self_refresh_aware);
drm_printf(p, "\tmax_requested_bpc=%d\n", state->max_requested_bpc);
drm_printf(p, "\tcolorspace=%s\n", drm_get_colorspace_name(state->colorspace));
+ if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+ drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
+ }
+
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
if (state->writeback_job && state->writeback_job->fb)
drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id);
if (connector->funcs->atomic_print_state)
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index d9961cce8245..da51a2bcb978 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -457,10 +457,11 @@ EXPORT_SYMBOL(drmm_connector_init);
* @dev: DRM device
* @connector: A pointer to the HDMI connector to init
* @funcs: callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
+ * @max_bpc: Maximum bits per char the HDMI connector supports
*
* Initialises a preallocated HDMI connector. Connectors can be
* subclassed as part of driver connector objects.
*
* Cleanup is automatically handled with a call to
@@ -473,22 +474,39 @@ EXPORT_SYMBOL(drmm_connector_init);
*/
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
- struct i2c_adapter *ddc)
+ struct i2c_adapter *ddc,
+ unsigned int max_bpc)
{
int ret;
if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector_type == DRM_MODE_CONNECTOR_HDMIB))
return -EINVAL;
+ if (!(max_bpc == 8 || max_bpc == 10 || max_bpc == 12))
+ return -EINVAL;
+
ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc);
if (ret)
return ret;
+ /*
+ * drm_connector_attach_max_bpc_property() requires the
+ * connector to have a state.
+ */
+ if (connector->funcs->reset)
+ connector->funcs->reset(connector);
+
+ drm_connector_attach_max_bpc_property(connector, 8, max_bpc);
+ connector->max_bpc = max_bpc;
+
+ if (max_bpc > 8)
+ drm_connector_attach_hdr_output_metadata_property(connector);
+
return 0;
}
EXPORT_SYMBOL(drmm_connector_hdmi_init);
/**
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 261d4109946d..2661eb64a5cd 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -182,11 +182,12 @@ static void drm_test_connector_hdmi_init_valid(struct kunit *test)
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
* Test that the registration of a connector without a DDC adapter
@@ -198,11 +199,12 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
- NULL);
+ NULL,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
* Test that the registration of an HDMI connector with an HDMI
@@ -215,11 +217,12 @@ static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_valid_tests[] = {
DRM_MODE_CONNECTOR_HDMIA,
@@ -246,11 +249,12 @@ static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
- &priv->ddc);
+ &priv->ddc,
+ 8);
KUNIT_EXPECT_LT(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_invalid_tests[] = {
DRM_MODE_CONNECTOR_Unknown,
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 000a2a156619..d4d2ae15bc1e 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1035,10 +1035,14 @@ struct drm_connector_state {
/**
* @hdmi: HDMI-related variable and properties. Filled by
* @drm_atomic_helper_connector_hdmi_check().
*/
struct {
+ /**
+ * @output_bpc: Bits per color channel to output.
+ */
+ unsigned int output_bpc;
} hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
@@ -1680,10 +1684,15 @@ struct drm_connector {
* DRM blob property data for the DP MST path property. This should only
* be updated by calling drm_connector_set_path_property().
*/
struct drm_property_blob *path_blob_ptr;
+ /**
+ * @max_bpc: Maximum bits per color channel the connector supports.
+ */
+ unsigned int max_bpc;
+
/**
* @max_bpc_property: Default connector property for the max bpc to be
* driven out of the connector.
*/
struct drm_property *max_bpc_property;
@@ -1913,11 +1922,12 @@ int drmm_connector_init(struct drm_device *dev,
struct i2c_adapter *ddc);
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
- struct i2c_adapter *ddc);
+ struct i2c_adapter *ddc,
+ unsigned int max_bpc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
int drm_connector_register(struct drm_connector *connector);
void drm_connector_unregister(struct drm_connector *connector);
int drm_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
--
2.45.0
Now that we track the HDMI output format as part of the connector state,
let's add a few tests to make sure it works as expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_connector_test.c | 99 +++++++++++++++++++++-
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 32 +++++++
2 files changed, 130 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 9589867bdf7c..72f22ec951d6 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -346,10 +346,46 @@ static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
prop = priv->drm.mode_config.hdr_output_metadata_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
}
+/*
+ * Test that the registration of an HDMI connector with no supported
+ * format fails.
+ */
+static void drm_test_connector_hdmi_init_formats_empty(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 0,
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of an HDMI connector not listing RGB as a
+ * supported format fails.
+ */
+static void drm_test_connector_hdmi_init_formats_no_rgb(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_YUV422),
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
/*
* Test that the registration of an HDMI connector with an HDMI
* connector type succeeds.
*/
static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
@@ -431,10 +467,12 @@ static struct kunit_case drmm_connector_hdmi_init_tests[] = {
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_8),
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_10),
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_12),
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_invalid),
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_null),
+ KUNIT_CASE(drm_test_connector_hdmi_init_formats_empty),
+ KUNIT_CASE(drm_test_connector_hdmi_init_formats_no_rgb),
KUNIT_CASE(drm_test_connector_hdmi_init_null_ddc),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_valid,
drm_connector_hdmi_init_type_valid_gen_params),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_invalid,
drm_connector_hdmi_init_type_invalid_gen_params),
@@ -508,13 +546,72 @@ static struct kunit_case drm_get_tv_mode_from_name_tests[] = {
static struct kunit_suite drm_get_tv_mode_from_name_test_suite = {
.name = "drm_get_tv_mode_from_name",
.test_cases = drm_get_tv_mode_from_name_tests,
};
+struct drm_hdmi_connector_get_output_format_name_test {
+ unsigned int kind;
+ const char *expected_name;
+};
+
+#define OUTPUT_FORMAT_TEST(_kind, _name) \
+ { \
+ .kind = _kind, \
+ .expected_name = _name, \
+ }
+
+static void drm_test_drm_hdmi_connector_get_output_format_name(struct kunit *test)
+{
+ const struct drm_hdmi_connector_get_output_format_name_test *params =
+ test->param_value;
+
+ KUNIT_EXPECT_STREQ(test,
+ drm_hdmi_connector_get_output_format_name(params->kind),
+ params->expected_name);
+}
+
+static const
+struct drm_hdmi_connector_get_output_format_name_test
+drm_hdmi_connector_get_output_format_name_valid_tests[] = {
+ OUTPUT_FORMAT_TEST(HDMI_COLORSPACE_RGB, "RGB"),
+ OUTPUT_FORMAT_TEST(HDMI_COLORSPACE_YUV420, "YUV 4:2:0"),
+ OUTPUT_FORMAT_TEST(HDMI_COLORSPACE_YUV422, "YUV 4:2:2"),
+ OUTPUT_FORMAT_TEST(HDMI_COLORSPACE_YUV444, "YUV 4:4:4"),
+};
+
+static void
+drm_hdmi_connector_get_output_format_name_valid_desc(const struct drm_hdmi_connector_get_output_format_name_test *t,
+ char *desc)
+{
+ sprintf(desc, "%s", t->expected_name);
+}
+
+KUNIT_ARRAY_PARAM(drm_hdmi_connector_get_output_format_name_valid,
+ drm_hdmi_connector_get_output_format_name_valid_tests,
+ drm_hdmi_connector_get_output_format_name_valid_desc);
+
+static void drm_test_drm_hdmi_connector_get_output_format_name_invalid(struct kunit *test)
+{
+ KUNIT_EXPECT_NULL(test, drm_hdmi_connector_get_output_format_name(4));
+};
+
+static struct kunit_case drm_hdmi_connector_get_output_format_name_tests[] = {
+ KUNIT_CASE_PARAM(drm_test_drm_hdmi_connector_get_output_format_name,
+ drm_hdmi_connector_get_output_format_name_valid_gen_params),
+ KUNIT_CASE(drm_test_drm_hdmi_connector_get_output_format_name_invalid),
+ { }
+};
+
+static struct kunit_suite drm_hdmi_connector_get_output_format_name_test_suite = {
+ .name = "drm_hdmi_connector_get_output_format_name",
+ .test_cases = drm_hdmi_connector_get_output_format_name_tests,
+};
+
kunit_test_suites(
&drmm_connector_hdmi_init_test_suite,
&drmm_connector_init_test_suite,
- &drm_get_tv_mode_from_name_test_suite
+ &drm_get_tv_mode_from_name_test_suite,
+ &drm_hdmi_connector_get_output_format_name_test_suite
);
MODULE_AUTHOR("Maxime Ripard <[email protected]>");
MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 333c81b8cf4f..8bc1f9b0b12b 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -347,10 +347,19 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
}
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
+ /*
+ * TODO: We should have tests to check that a change in the
+ * format triggers a CRTC mode change just like we do for the
+ * RGB Quantization and BPC.
+ *
+ * However, we don't have any way to control which format gets
+ * picked up aside from changing the BPC or mode which would
+ * already trigger a mode change.
+ */
{ }
};
static struct kunit_suite drm_atomic_helper_connector_hdmi_check_test_suite = {
.name = "drm_atomic_helper_connector_hdmi_check",
@@ -427,14 +436,37 @@ static void drm_test_check_bpc_12_value(struct kunit *test)
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 12);
KUNIT_EXPECT_EQ(test, conn_state->max_requested_bpc, 12);
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 0);
}
+/*
+ * Test that the value of the output format property out of reset is set
+ * to RGB, even if the driver supports more than that.
+ */
+static void drm_test_check_format_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_reset_tests[] = {
KUNIT_CASE(drm_test_check_bpc_8_value),
KUNIT_CASE(drm_test_check_bpc_10_value),
KUNIT_CASE(drm_test_check_bpc_12_value),
+ KUNIT_CASE(drm_test_check_format_value),
{ }
};
static struct kunit_suite drm_atomic_helper_connector_hdmi_reset_test_suite = {
.name = "drm_atomic_helper_connector_hdmi_reset",
--
2.45.0
The previous patch added an helper to compute the TMDS character rate on
an HDMI connector. Let's add a few tests to make sure it works as
expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_connector_test.c | 296 +++++++++++++++++++++++++++++
1 file changed, 296 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 72f22ec951d6..426d974d8d74 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -6,11 +6,15 @@
#include <linux/i2c.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_connector.h>
#include <drm/drm_drv.h>
+#include <drm/drm_edid.h>
#include <drm/drm_kunit_helpers.h>
+#include <drm/drm_modes.h>
+
+#include <drm/display/drm_hdmi_helper.h>
#include <kunit/test.h>
#include "../drm_crtc_internal.h"
@@ -604,14 +608,306 @@ static struct kunit_case drm_hdmi_connector_get_output_format_name_tests[] = {
static struct kunit_suite drm_hdmi_connector_get_output_format_name_test_suite = {
.name = "drm_hdmi_connector_get_output_format_name",
.test_cases = drm_hdmi_connector_get_output_format_name_tests,
};
+/*
+ * Test that for a given mode, with 8bpc and an RGB output the TMDS
+ * character rate is equal to the mode pixel clock.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, mode->clock * 1000ULL, rate);
+}
+
+/*
+ * Test that for a given mode, with 10bpc and an RGB output the TMDS
+ * character rate is equal to 1.25 times the mode pixel clock.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 10, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, mode->clock * 1250, rate);
+}
+
+/*
+ * Test that for the VIC-1 mode, with 10bpc and an RGB output the TMDS
+ * character rate computation fails.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc_vic_1(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 10, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, rate, 0);
+}
+
+/*
+ * Test that for a given mode, with 12bpc and an RGB output the TMDS
+ * character rate is equal to 1.5 times the mode pixel clock.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, mode->clock * 1500, rate);
+}
+
+/*
+ * Test that for the VIC-1 mode, with 12bpc and an RGB output the TMDS
+ * character rate computation fails.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc_vic_1(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, rate, 0);
+}
+
+/*
+ * Test that for a mode with the pixel repetition flag, the TMDS
+ * character rate is indeed double the mode pixel clock.
+ */
+static void drm_test_drm_hdmi_compute_mode_clock_rgb_double(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_device *drm = &priv->drm;
+
+ mode = drm_display_mode_from_cea_vic(drm, 6);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_TRUE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, (mode->clock * 1000ULL) * 2, rate);
+}
+
+/*
+ * Test that the TMDS character rate computation for the VIC modes
+ * explicitly listed in the spec as supporting YUV420 succeed and return
+ * half the mode pixel clock.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv420_valid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned long long rate;
+ unsigned int vic = *(unsigned int *)test->param_value;
+
+ mode = drm_display_mode_from_cea_vic(drm, vic);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_YUV420);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, (mode->clock * 1000ULL) / 2, rate);
+}
+
+static const unsigned int drm_hdmi_compute_mode_clock_yuv420_vic_valid_tests[] = {
+ 96, 97, 101, 102, 106, 107,
+};
+
+static void drm_hdmi_compute_mode_clock_yuv420_vic_desc(const unsigned int *vic, char *desc)
+{
+ sprintf(desc, "VIC %u", *vic);
+}
+
+KUNIT_ARRAY_PARAM(drm_hdmi_compute_mode_clock_yuv420_valid,
+ drm_hdmi_compute_mode_clock_yuv420_vic_valid_tests,
+ drm_hdmi_compute_mode_clock_yuv420_vic_desc);
+
+/*
+ * Test that for a given mode listed supporting it and an YUV420 output
+ * with 10bpc, the TMDS character rate is equal to 0.625 times the mode
+ * pixel clock.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv420_10_bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned int vic =
+ drm_hdmi_compute_mode_clock_yuv420_vic_valid_tests[0];
+ unsigned long long rate;
+
+ mode = drm_display_mode_from_cea_vic(drm, vic);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 10, HDMI_COLORSPACE_YUV420);
+ KUNIT_ASSERT_GT(test, rate, 0);
+
+ KUNIT_EXPECT_EQ(test, mode->clock * 625, rate);
+}
+
+/*
+ * Test that for a given mode listed supporting it and an YUV420 output
+ * with 12bpc, the TMDS character rate is equal to 0.75 times the mode
+ * pixel clock.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv420_12_bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned int vic =
+ drm_hdmi_compute_mode_clock_yuv420_vic_valid_tests[0];
+ unsigned long long rate;
+
+ mode = drm_display_mode_from_cea_vic(drm, vic);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 12, HDMI_COLORSPACE_YUV420);
+ KUNIT_ASSERT_GT(test, rate, 0);
+
+ KUNIT_EXPECT_EQ(test, mode->clock * 750, rate);
+}
+
+/*
+ * Test that for a given mode, the computation of the TMDS character
+ * rate with 8bpc and a YUV422 output fails.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv422_8_bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned long long rate;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_YUV422);
+ KUNIT_EXPECT_EQ(test, rate, 0);
+}
+
+/*
+ * Test that for a given mode, the computation of the TMDS character
+ * rate with 10bpc and a YUV422 output fails.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv422_10_bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned long long rate;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 10, HDMI_COLORSPACE_YUV422);
+ KUNIT_EXPECT_EQ(test, rate, 0);
+}
+
+/*
+ * Test that for a given mode, the computation of the TMDS character
+ * rate with 12bpc and a YUV422 output succeeds and returns a rate equal
+ * to the mode pixel clock.
+ */
+static void drm_test_connector_hdmi_compute_mode_clock_yuv422_12_bpc(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const struct drm_display_mode *mode;
+ struct drm_device *drm = &priv->drm;
+ unsigned long long rate;
+
+ mode = drm_display_mode_from_cea_vic(drm, 16);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ KUNIT_ASSERT_FALSE(test, mode->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(mode, 12, HDMI_COLORSPACE_YUV422);
+ KUNIT_ASSERT_GT(test, rate, 0);
+ KUNIT_EXPECT_EQ(test, mode->clock * 1000, rate);
+}
+
+static struct kunit_case drm_hdmi_compute_mode_clock_tests[] = {
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb),
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc),
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc_vic_1),
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc),
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc_vic_1),
+ KUNIT_CASE(drm_test_drm_hdmi_compute_mode_clock_rgb_double),
+ KUNIT_CASE_PARAM(drm_test_connector_hdmi_compute_mode_clock_yuv420_valid,
+ drm_hdmi_compute_mode_clock_yuv420_valid_gen_params),
+ KUNIT_CASE(drm_test_connector_hdmi_compute_mode_clock_yuv420_10_bpc),
+ KUNIT_CASE(drm_test_connector_hdmi_compute_mode_clock_yuv420_12_bpc),
+ KUNIT_CASE(drm_test_connector_hdmi_compute_mode_clock_yuv422_8_bpc),
+ KUNIT_CASE(drm_test_connector_hdmi_compute_mode_clock_yuv422_10_bpc),
+ KUNIT_CASE(drm_test_connector_hdmi_compute_mode_clock_yuv422_12_bpc),
+ { }
+};
+
+static struct kunit_suite drm_hdmi_compute_mode_clock_test_suite = {
+ .name = "drm_test_connector_hdmi_compute_mode_clock",
+ .init = drm_test_connector_init,
+ .test_cases = drm_hdmi_compute_mode_clock_tests,
+};
+
kunit_test_suites(
&drmm_connector_hdmi_init_test_suite,
&drmm_connector_init_test_suite,
&drm_get_tv_mode_from_name_test_suite,
+ &drm_hdmi_compute_mode_clock_test_suite,
&drm_hdmi_connector_get_output_format_name_test_suite
);
MODULE_AUTHOR("Maxime Ripard <[email protected]>");
MODULE_LICENSE("GPL");
--
2.45.0
Most HDMI drivers have some code to calculate the TMDS character rate,
usually to adjust an internal clock to match what the mode requires.
Since the TMDS character rates mostly depends on the resolution, whether
we need to repeat pixels or not, the bpc count and the format, we can
now derive it from the HDMI connector state that stores all those infos
and remove the duplication from drivers.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 67 ++++++++++++++++++++++
drivers/gpu/drm/drm_atomic.c | 1 +
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 3 +
include/drm/drm_connector.h | 5 ++
4 files changed, 76 insertions(+)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index f6cd0612ea2c..08630561d864 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -1,10 +1,11 @@
// SPDX-License-Identifier: MIT
#include <drm/drm_atomic.h>
#include <drm/drm_connector.h>
+#include <drm/display/drm_hdmi_helper.h>
#include <drm/display/drm_hdmi_state_helper.h>
/**
* __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources
* @connector: DRM connector
@@ -23,10 +24,67 @@ void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
new_conn_state->max_bpc = max_bpc;
new_conn_state->max_requested_bpc = max_bpc;
}
EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
+static const struct drm_display_mode *
+connector_state_get_mode(const struct drm_connector_state *conn_state)
+{
+ struct drm_atomic_state *state;
+ struct drm_crtc_state *crtc_state;
+ struct drm_crtc *crtc;
+
+ state = conn_state->state;
+ if (!state)
+ return NULL;
+
+ crtc = conn_state->crtc;
+ if (!crtc)
+ return NULL;
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ if (!crtc_state)
+ return NULL;
+
+ return &crtc_state->mode;
+}
+
+static enum drm_mode_status
+hdmi_clock_valid(const struct drm_connector *connector,
+ const struct drm_display_mode *mode,
+ unsigned long long clock)
+{
+ const struct drm_display_info *info = &connector->display_info;
+
+ if (info->max_tmds_clock && clock > info->max_tmds_clock * 1000)
+ return MODE_CLOCK_HIGH;
+
+ return MODE_OK;
+}
+
+static int
+hdmi_compute_clock(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state,
+ const struct drm_display_mode *mode,
+ unsigned int bpc, enum hdmi_colorspace fmt)
+{
+ enum drm_mode_status status;
+ unsigned long long clock;
+
+ clock = drm_hdmi_compute_mode_clock(mode, bpc, fmt);
+ if (!clock)
+ return -EINVAL;
+
+ status = hdmi_clock_valid(connector, mode, clock);
+ if (status != MODE_OK)
+ return -EINVAL;
+
+ conn_state->hdmi.tmds_char_rate = clock;
+
+ return 0;
+}
+
/**
* drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
* @connector: DRM Connector
* @state: the DRM State object
*
@@ -42,10 +100,19 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
{
struct drm_connector_state *old_conn_state =
drm_atomic_get_old_connector_state(state, connector);
struct drm_connector_state *new_conn_state =
drm_atomic_get_new_connector_state(state, connector);
+ const struct drm_display_mode *mode =
+ connector_state_get_mode(new_conn_state);
+ int ret;
+
+ ret = hdmi_compute_clock(connector, new_conn_state, mode,
+ new_conn_state->hdmi.output_bpc,
+ new_conn_state->hdmi.output_format);
+ if (ret)
+ return ret;
if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 8730137baa86..26f9e525c0a0 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1146,10 +1146,11 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
drm_printf(p, "\toutput_format=%s\n",
drm_hdmi_connector_get_output_format_name(state->hdmi.output_format));
+ drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate);
}
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
if (state->writeback_job && state->writeback_job->fb)
drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id);
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 8bc1f9b0b12b..4f46a70a5017 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -70,10 +70,13 @@ static int light_up_connector(struct kunit *test,
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
conn_state = drm_atomic_get_connector_state(state, connector);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+ conn_state->hdmi.output_bpc = connector->max_bpc;
+ conn_state->hdmi.output_format = HDMI_COLORSPACE_RGB;
+
ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
KUNIT_EXPECT_EQ(test, ret, 0);
crtc_state = drm_atomic_get_crtc_state(state, crtc);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 29883e6f8e50..54899c030031 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1047,10 +1047,15 @@ struct drm_connector_state {
/**
* @output_format: Pixel format to output in.
*/
enum hdmi_colorspace output_format;
+
+ /**
+ * @tmds_char_rate: TMDS Character Rate, in Hz.
+ */
+ unsigned long long tmds_char_rate;
} hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
--
2.45.0
The previous patch stores in the connector state the expected TMDS
character rate matching the configuration of the HDMI connector. Let's
add a few tests to make sure it works as expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 166 ++++++++++++++++
drivers/gpu/drm/tests/drm_kunit_edid.h | 216 +++++++++++++++++++++
2 files changed, 382 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 4f46a70a5017..8ff53ee54e97 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -347,13 +347,156 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
}
+/*
+ * Test that when doing a commit which would use RGB 8bpc, the TMDS
+ * clock rate stored in the connector state is equal to the mode clock
+ */
+static void drm_test_check_tmds_char_rate_rgb_8bpc(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 8);
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1000);
+}
+
+/*
+ * Test that when doing a commit which would use RGB 10bpc, the TMDS
+ * clock rate stored in the connector state is equal to 1.25 times the
+ * mode pixel clock
+ */
+static void drm_test_check_tmds_char_rate_rgb_10bpc(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 10);
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1250);
+}
+
+/*
+ * Test that when doing a commit which would use RGB 12bpc, the TMDS
+ * clock rate stored in the connector state is equal to 1.5 times the
+ * mode pixel clock
+ */
+static void drm_test_check_tmds_char_rate_rgb_12bpc(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 12);
+ KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1500);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
+ KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_8bpc),
+ KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_10bpc),
+ KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_12bpc),
/*
* TODO: We should have tests to check that a change in the
* format triggers a CRTC mode change just like we do for the
* RGB Quantization and BPC.
*
@@ -461,15 +604,38 @@ static void drm_test_check_format_value(struct kunit *test)
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
}
+/*
+ * Test that the value of the output format property out of reset is set
+ * to 0, and will be computed at atomic_check time.
+ */
+static void drm_test_check_tmds_char_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, 0);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_reset_tests[] = {
KUNIT_CASE(drm_test_check_bpc_8_value),
KUNIT_CASE(drm_test_check_bpc_10_value),
KUNIT_CASE(drm_test_check_bpc_12_value),
KUNIT_CASE(drm_test_check_format_value),
+ KUNIT_CASE(drm_test_check_tmds_char_value),
{ }
};
static struct kunit_suite drm_atomic_helper_connector_hdmi_reset_test_suite = {
.name = "drm_atomic_helper_connector_hdmi_reset",
diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
index 0366dd29c820..ed051d356d5e 100644
--- a/drivers/gpu/drm/tests/drm_kunit_edid.h
+++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
@@ -101,6 +101,222 @@ static const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xd0
};
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
+ * 00 21 01 03 81 a0 5a 78 1a 00 00 00 00 00 00 00
+ * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
+ * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 7a
+ *
+ * 02 03 1b b1 e3 05 00 20 41 10 e2 00 ca 6d 03 0c
+ * 00 12 34 78 28 20 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a8
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ * EDID Structure Version & Revision: 1.3
+ * Vendor & Product Identification:
+ * Manufacturer: LNX
+ * Model: 42
+ * Made in: 2023
+ * Basic Display Parameters & Features:
+ * Digital display
+ * DFP 1.x compatible TMDS
+ * Maximum image size: 160 cm x 90 cm
+ * Gamma: 2.20
+ * Undefined display color type
+ * First detailed timing is the preferred timing
+ * Color Characteristics:
+ * Red : 0.0000, 0.0000
+ * Green: 0.0000, 0.0000
+ * Blue : 0.0000, 0.0000
+ * White: 0.0000, 0.0000
+ * Established Timings I & II:
+ * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
+ * Standard Timings: none
+ * Detailed Timing Descriptors:
+ * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
+ * Hfront 88 Hsync 44 Hback 148 Hpol P
+ * Vfront 4 Vsync 5 Vback 36 Vpol P
+ * Display Product Name: 'Test EDID'
+ * Display Range Limits:
+ * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
+ * Dummy Descriptor:
+ * Extension blocks: 1
+ * Checksum: 0x7a
+ *
+ * ----------------
+ *
+ * Block 1, CTA-861 Extension Block:
+ * Revision: 3
+ * Underscans IT Video Formats by default
+ * Supports YCbCr 4:4:4
+ * Supports YCbCr 4:2:2
+ * Native detailed modes: 1
+ * Colorimetry Data Block:
+ * sRGB
+ * Video Data Block:
+ * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
+ * Video Capability Data Block:
+ * YCbCr quantization: Selectable (via AVI YQ)
+ * RGB quantization: Selectable (via AVI Q)
+ * PT scan behavior: No Data
+ * IT scan behavior: Always Underscanned
+ * CE scan behavior: Always Underscanned
+ * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
+ * Source physical address: 1.2.3.4
+ * DC_48bit
+ * DC_36bit
+ * DC_30bit
+ * DC_Y444
+ * Maximum TMDS clock: 200 MHz
+ * Extended HDMI video details:
+ * Checksum: 0xa8 Unused space in Extension Block: 100 bytes
+ */
+static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
+ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+ 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+ 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x46, 0x1e, 0x46, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x7a, 0x02, 0x03, 0x1b, 0xb1,
+ 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0xca, 0x6d, 0x03, 0x0c,
+ 0x00, 0x12, 0x34, 0x78, 0x28, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xa8
+};
+
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
+ * 00 21 01 03 81 a0 5a 78 0a 00 00 00 00 00 00 00
+ * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
+ * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 8a
+ *
+ * 02 03 1b b1 e3 05 00 20 41 10 e2 00 ca 6d 03 0c
+ * 00 12 34 78 44 20 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8c
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ * EDID Structure Version & Revision: 1.3
+ * Vendor & Product Identification:
+ * Manufacturer: LNX
+ * Model: 42
+ * Made in: 2023
+ * Basic Display Parameters & Features:
+ * Digital display
+ * DFP 1.x compatible TMDS
+ * Maximum image size: 160 cm x 90 cm
+ * Gamma: 2.20
+ * RGB color display
+ * First detailed timing is the preferred timing
+ * Color Characteristics:
+ * Red : 0.0000, 0.0000
+ * Green: 0.0000, 0.0000
+ * Blue : 0.0000, 0.0000
+ * White: 0.0000, 0.0000
+ * Established Timings I & II:
+ * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
+ * Standard Timings: none
+ * Detailed Timing Descriptors:
+ * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
+ * Hfront 88 Hsync 44 Hback 148 Hpol P
+ * Vfront 4 Vsync 5 Vback 36 Vpol P
+ * Display Product Name: 'Test EDID'
+ * Display Range Limits:
+ * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
+ * Dummy Descriptor:
+ * Extension blocks: 1
+ * Checksum: 0x8a
+ *
+ * ----------------
+ *
+ * Block 1, CTA-861 Extension Block:
+ * Revision: 3
+ * Underscans IT Video Formats by default
+ * Supports YCbCr 4:4:4
+ * Supports YCbCr 4:2:2
+ * Native detailed modes: 1
+ * Colorimetry Data Block:
+ * sRGB
+ * Video Data Block:
+ * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
+ * Video Capability Data Block:
+ * YCbCr quantization: Selectable (via AVI YQ)
+ * RGB quantization: Selectable (via AVI Q)
+ * PT scan behavior: No Data
+ * IT scan behavior: Always Underscanned
+ * CE scan behavior: Always Underscanned
+ * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
+ * Source physical address: 1.2.3.4
+ * DC_48bit
+ * DC_36bit
+ * DC_30bit
+ * DC_Y444
+ * Maximum TMDS clock: 340 MHz
+ * Extended HDMI video details:
+ * Checksum: 0x8c Unused space in Extension Block: 100 bytes
+ */
+static const unsigned char test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
+ 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+ 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+ 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x46, 0x1e, 0x46, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x8a, 0x02, 0x03, 0x1b, 0xb1,
+ 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0xca, 0x6d, 0x03, 0x0c,
+ 0x00, 0x12, 0x34, 0x78, 0x44, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x8c
+};
+
#endif // DRM_KUNIT_EDID_H_
--
2.45.0
Most of the HDMI controllers have an upper TMDS character rate limit
they can't exceed. On "embedded"-grade display controllers, it will
typically be lower than what high-grade monitors can provide these days,
so drivers will filter the TMDS character rate based on the controller
capabilities.
To make that easier to handle for drivers, let's provide an optional
hook to be implemented by drivers so they can tell the HDMI controller
helpers if a given TMDS character rate is reachable for them or not.
This will then be useful to figure out the best format and bpc count for
a given mode.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 9 +++++++
drivers/gpu/drm/drm_connector.c | 4 +++
drivers/gpu/drm/tests/drm_connector_test.c | 14 ++++++++++
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 4 +++
include/drm/drm_connector.h | 31 ++++++++++++++++++++++
5 files changed, 62 insertions(+)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 08630561d864..063421835dba 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -51,15 +51,24 @@ connector_state_get_mode(const struct drm_connector_state *conn_state)
static enum drm_mode_status
hdmi_clock_valid(const struct drm_connector *connector,
const struct drm_display_mode *mode,
unsigned long long clock)
{
+ const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
const struct drm_display_info *info = &connector->display_info;
if (info->max_tmds_clock && clock > info->max_tmds_clock * 1000)
return MODE_CLOCK_HIGH;
+ if (funcs && funcs->tmds_char_rate_valid) {
+ enum drm_mode_status status;
+
+ status = funcs->tmds_char_rate_valid(connector, mode, clock);
+ if (status != MODE_OK)
+ return status;
+ }
+
return MODE_OK;
}
static int
hdmi_compute_clock(const struct drm_connector *connector,
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index b629c8e990f4..555eac20e5a4 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -455,10 +455,11 @@ EXPORT_SYMBOL(drmm_connector_init);
/**
* drmm_connector_hdmi_init - Init a preallocated HDMI connector
* @dev: DRM device
* @connector: A pointer to the HDMI connector to init
* @funcs: callbacks for this connector
+ * @hdmi_funcs: HDMI-related callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
* @supported_formats: Bitmask of @hdmi_colorspace listing supported output formats
* @max_bpc: Maximum bits per char the HDMI connector supports
*
@@ -474,10 +475,11 @@ EXPORT_SYMBOL(drmm_connector_init);
* Zero on success, error code on failure.
*/
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
+ const struct drm_connector_hdmi_funcs *hdmi_funcs,
int connector_type,
struct i2c_adapter *ddc,
unsigned long supported_formats,
unsigned int max_bpc)
{
@@ -510,10 +512,12 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
connector->max_bpc = max_bpc;
if (max_bpc > 8)
drm_connector_attach_hdr_output_metadata_property(connector);
+ connector->hdmi.funcs = hdmi_funcs;
+
return 0;
}
EXPORT_SYMBOL(drmm_connector_hdmi_init);
/**
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 426d974d8d74..34d96f7fbb25 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -22,10 +22,13 @@ struct drm_connector_init_priv {
struct drm_device drm;
struct drm_connector connector;
struct i2c_adapter ddc;
};
+static const struct drm_connector_hdmi_funcs dummy_hdmi_funcs = {
+};
+
static const struct drm_connector_funcs dummy_funcs = {
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.reset = drm_atomic_helper_connector_reset,
};
@@ -187,10 +190,11 @@ static void drm_test_connector_hdmi_init_valid(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -205,10 +209,11 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -223,10 +228,11 @@ static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
9);
KUNIT_EXPECT_LT(test, ret, 0);
@@ -241,10 +247,11 @@ static void drm_test_connector_hdmi_init_bpc_null(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
0);
KUNIT_EXPECT_LT(test, ret, 0);
@@ -263,10 +270,11 @@ static void drm_test_connector_hdmi_init_bpc_8(struct kunit *test)
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -297,10 +305,11 @@ static void drm_test_connector_hdmi_init_bpc_10(struct kunit *test)
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
10);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -331,10 +340,11 @@ static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
12);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -361,10 +371,11 @@ static void drm_test_connector_hdmi_init_formats_empty(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
0,
8);
KUNIT_EXPECT_LT(test, ret, 0);
@@ -379,10 +390,11 @@ static void drm_test_connector_hdmi_init_formats_no_rgb(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_YUV422),
8);
KUNIT_EXPECT_LT(test, ret, 0);
@@ -398,10 +410,11 @@ static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
unsigned int connector_type = *(unsigned int *)test->param_value;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
connector_type,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
@@ -431,10 +444,11 @@ static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
unsigned int connector_type = *(unsigned int *)test->param_value;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
+ &dummy_hdmi_funcs,
connector_type,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_LT(test, ret, 0);
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 8ff53ee54e97..7f9a48902db4 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -110,10 +110,13 @@ static int set_connector_edid(struct kunit *test, struct drm_connector *connecto
KUNIT_ASSERT_GT(test, ret, 0);
return 0;
}
+static const struct drm_connector_hdmi_funcs dummy_connector_hdmi_funcs = {
+};
+
static int dummy_connector_get_modes(struct drm_connector *connector)
{
struct drm_atomic_helper_connector_hdmi_priv *priv =
connector_to_priv(connector);
const struct drm_edid *edid;
@@ -192,10 +195,11 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test,
enc->possible_crtcs = drm_crtc_mask(priv->crtc);
conn = &priv->connector;
ret = drmm_connector_hdmi_init(drm, conn,
&dummy_connector_funcs,
+ &dummy_connector_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
formats,
max_bpc);
KUNIT_ASSERT_EQ(test, ret, 0);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 54899c030031..3c0b6694074f 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -36,10 +36,11 @@
struct drm_connector_helper_funcs;
struct drm_modeset_acquire_ctx;
struct drm_device;
struct drm_crtc;
+struct drm_display_mode;
struct drm_encoder;
struct drm_panel;
struct drm_property;
struct drm_property_blob;
struct drm_printer;
@@ -1055,10 +1056,34 @@ struct drm_connector_state {
*/
unsigned long long tmds_char_rate;
} hdmi;
};
+/**
+ * struct drm_connector_hdmi_funcs - drm_hdmi_connector control functions
+ */
+struct drm_connector_hdmi_funcs {
+ /**
+ * @tmds_char_rate_valid:
+ *
+ * This callback is invoked at atomic_check time to figure out
+ * whether a particular TMDS character rate is supported by the
+ * driver.
+ *
+ * The @tmds_char_rate_valid callback is optional.
+ *
+ * Returns:
+ *
+ * Either &drm_mode_status.MODE_OK or one of the failure reasons
+ * in &enum drm_mode_status.
+ */
+ enum drm_mode_status
+ (*tmds_char_rate_valid)(const struct drm_connector *connector,
+ const struct drm_display_mode *mode,
+ unsigned long long tmds_rate);
+};
+
/**
* struct drm_connector_funcs - control connectors on a given device
*
* Each CRTC may have one or more connectors attached to it. The functions
* below allow the core DRM code to control connectors, enumerate available modes,
@@ -1923,10 +1948,15 @@ struct drm_connector {
/**
* @supported_formats: Bitmask of @hdmi_colorspace
* supported by the controller.
*/
unsigned long supported_formats;
+
+ /**
+ * @funcs: HDMI connector Control Functions
+ */
+ const struct drm_connector_hdmi_funcs *funcs;
} hdmi;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
@@ -1945,10 +1975,11 @@ int drmm_connector_init(struct drm_device *dev,
int connector_type,
struct i2c_adapter *ddc);
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
+ const struct drm_connector_hdmi_funcs *hdmi_funcs,
int connector_type,
struct i2c_adapter *ddc,
unsigned long supported_formats,
unsigned int max_bpc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
--
2.45.0
The previous patch adds a new hook for HDMI connectors to filter out
configurations based on the TMDS character rate. Let's add some tests to
make sure it works as expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 65 ++++++++++++++++++++++
1 file changed, 65 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 7f9a48902db4..ead998a691e7 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -113,10 +113,22 @@ static int set_connector_edid(struct kunit *test, struct drm_connector *connecto
}
static const struct drm_connector_hdmi_funcs dummy_connector_hdmi_funcs = {
};
+static enum drm_mode_status
+reject_connector_tmds_char_rate_valid(const struct drm_connector *connector,
+ const struct drm_display_mode *mode,
+ unsigned long long tmds_rate)
+{
+ return MODE_BAD;
+}
+
+static const struct drm_connector_hdmi_funcs reject_connector_hdmi_funcs = {
+ .tmds_char_rate_valid = reject_connector_tmds_char_rate_valid,
+};
+
static int dummy_connector_get_modes(struct drm_connector *connector)
{
struct drm_atomic_helper_connector_hdmi_priv *priv =
connector_to_priv(connector);
const struct drm_edid *edid;
@@ -491,11 +503,64 @@ static void drm_test_check_tmds_char_rate_rgb_12bpc(struct kunit *test)
KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_bpc, 12);
KUNIT_ASSERT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1500);
}
+/*
+ * Test that if we filter a rate through our hook, it's indeed rejected
+ * by the whole atomic_check logic.
+ *
+ * We do so by first doing a commit on the pipeline to make sure that it
+ * works, change the HDMI helpers pointer, and then try the same commit
+ * again to see if it fails as it should.
+ */
+static void drm_test_check_hdmi_funcs_reject_rate(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_crtc_state *crtc_state;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ conn = &priv->connector;
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ /* You shouldn't be doing that at home. */
+ conn->hdmi.funcs = &reject_connector_hdmi_funcs;
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+
+ crtc_state->connectors_changed = true;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
+ KUNIT_CASE(drm_test_check_hdmi_funcs_reject_rate),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_8bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_10bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_12bpc),
--
2.45.0
The previous patch added the bpc and format an HDMI connector needs to
be set up with for a given connector state.
Let's add a few tests to make sure it works as expected.
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 509 +++++++++++++++++++++
drivers/gpu/drm/tests/drm_kunit_edid.h | 160 +++++++
2 files changed, 669 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index a49a544d7b49..968204781928 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -15,10 +15,11 @@
#include <drm/drm_managed.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
#include <drm/display/drm_hdmi_state_helper.h>
#include "../drm_crtc_internal.h"
#include <kunit/test.h>
@@ -370,10 +371,60 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
}
+/*
+ * Test that if we have an HDMI connector but a !HDMI display, we always
+ * output RGB with 8 bpc.
+ */
+static void drm_test_check_output_bpc_dvi(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_dvi_1080p,
+ ARRAY_SIZE(test_edid_dvi_1080p));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_FALSE(test, info->is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
/*
* Test that when doing a commit which would use RGB 8bpc, the TMDS
* clock rate stored in the connector state is equal to the mode clock
*/
static void drm_test_check_tmds_char_rate_rgb_8bpc(struct kunit *test)
@@ -562,14 +613,472 @@ static void drm_test_check_hdmi_funcs_reject_rate(struct kunit *test)
ret = drm_atomic_check_only(state);
KUNIT_EXPECT_LT(test, ret, 0);
}
+/*
+ * Test that if:
+ * - We have an HDMI connector supporting RGB only
+ * - The chosen mode has a TMDS character rate higher than the display
+ * supports in RGB/12bpc
+ * - The chosen mode has a TMDS character rate lower than the display
+ * supports in RGB/10bpc.
+ *
+ * Then we will pick the latter, and the computed TMDS character rate
+ * will be equal to 1.25 times the mode pixel clock.
+ */
+static void drm_test_check_max_tmds_rate_bpc_fallback(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 10, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 10);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, preferred->clock * 1250);
+}
+
+/*
+ * Test that if:
+ * - We have an HDMI connector supporting both RGB and YUV422 and up to
+ * 12 bpc
+ * - The chosen mode has a TMDS character rate higher than the display
+ * supports in RGB/12bpc but lower than the display supports in
+ * RGB/10bpc
+ * - The chosen mode has a TMDS character rate lower than the display
+ * supports in YUV422/12bpc.
+ *
+ * Then we will prefer to keep the RGB format with a lower bpc over
+ * picking YUV422.
+ */
+static void drm_test_check_max_tmds_rate_format_fallback(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_FALSE(test, preferred->flags & DRM_MODE_FLAG_DBLCLK);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 10, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 10);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
+/*
+ * Test that if a driver and screen supports RGB and YUV formats, and we
+ * try to set the VIC 1 mode, we end up with 8bpc RGB even if we could
+ * have had a higher bpc.
+ */
+static void drm_test_check_output_bpc_format_vic_1(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *mode;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ drm = &priv->drm;
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ /*
+ * NOTE: We can't use drm_hdmi_compute_mode_clock()
+ * here because we're trying to get the rate of an invalid
+ * configuration.
+ *
+ * Thus, we have to calculate the rate by hand.
+ */
+ rate = mode->clock * 1500;
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, mode, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
+/*
+ * Test that if a driver supports only RGB but the screen also supports
+ * YUV formats, we only end up with an RGB format.
+ */
+static void drm_test_check_output_bpc_format_driver_rgb_only(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ /*
+ * We're making sure that YUV422 would be the preferred option
+ * here: we're always favouring higher bpc, we can't have RGB
+ * because the TMDS character rate exceeds the maximum supported
+ * by the display, and YUV422 works for that display.
+ *
+ * But since the driver only supports RGB, we should fallback to
+ * a lower bpc with RGB.
+ */
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_LT(test, conn_state->hdmi.output_bpc, 12);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
+/*
+ * Test that if a screen supports only RGB but the driver also supports
+ * YUV formats, we only end up with an RGB format.
+ */
+static void drm_test_check_output_bpc_format_display_rgb_only(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ /*
+ * We're making sure that YUV422 would be the preferred option
+ * here: we're always favouring higher bpc, we can't have RGB
+ * because the TMDS character rate exceeds the maximum supported
+ * by the display, and YUV422 works for that display.
+ *
+ * But since the display only supports RGB, we should fallback to
+ * a lower bpc with RGB.
+ */
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_GT(test, rate, info->max_tmds_clock * 1000);
+
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_YUV422);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_LT(test, conn_state->hdmi.output_bpc, 12);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
+/*
+ * Test that if a display supports higher bpc but the driver only
+ * supports 8 bpc, we only end up with 8 bpc even if we could have had a
+ * higher bpc.
+ */
+static void drm_test_check_output_bpc_format_driver_8bpc_only(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_340mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ /*
+ * We're making sure that we have headroom on the TMDS character
+ * clock to actually use 12bpc.
+ */
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
+/*
+ * Test that if a driver supports higher bpc but the display only
+ * supports 8 bpc, we only end up with 8 bpc even if we could have had a
+ * higher bpc.
+ */
+static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_display_info *info;
+ struct drm_display_mode *preferred;
+ unsigned long long rate;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_max_340mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_340mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ info = &conn->display_info;
+ KUNIT_ASSERT_TRUE(test, info->is_hdmi);
+ KUNIT_ASSERT_GT(test, info->max_tmds_clock, 0);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ /*
+ * We're making sure that we have headroom on the TMDS character
+ * clock to actually use 12bpc.
+ */
+ rate = drm_hdmi_compute_mode_clock(preferred, 12, HDMI_COLORSPACE_RGB);
+ KUNIT_ASSERT_LT(test, rate, info->max_tmds_clock * 1000);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ conn_state = conn->state;
+ KUNIT_ASSERT_NOT_NULL(test, conn_state);
+
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+}
+
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
KUNIT_CASE(drm_test_check_hdmi_funcs_reject_rate),
+ KUNIT_CASE(drm_test_check_max_tmds_rate_bpc_fallback),
+ KUNIT_CASE(drm_test_check_max_tmds_rate_format_fallback),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
+ KUNIT_CASE(drm_test_check_output_bpc_dvi),
+ KUNIT_CASE(drm_test_check_output_bpc_format_vic_1),
+ KUNIT_CASE(drm_test_check_output_bpc_format_display_8bpc_only),
+ KUNIT_CASE(drm_test_check_output_bpc_format_display_rgb_only),
+ KUNIT_CASE(drm_test_check_output_bpc_format_driver_8bpc_only),
+ KUNIT_CASE(drm_test_check_output_bpc_format_driver_rgb_only),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_8bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_10bpc),
KUNIT_CASE(drm_test_check_tmds_char_rate_rgb_12bpc),
/*
* TODO: We should have tests to check that a change in the
diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
index ed051d356d5e..cda410440aca 100644
--- a/drivers/gpu/drm/tests/drm_kunit_edid.h
+++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
@@ -1,8 +1,66 @@
#ifndef DRM_KUNIT_EDID_H_
#define DRM_KUNIT_EDID_H_
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
+ * 00 21 01 03 81 a0 5a 78 0a 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
+ * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ab
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ * EDID Structure Version & Revision: 1.3
+ * Vendor & Product Identification:
+ * Manufacturer: LNX
+ * Model: 42
+ * Made in: 2023
+ * Basic Display Parameters & Features:
+ * Digital display
+ * DFP 1.x compatible TMDS
+ * Maximum image size: 160 cm x 90 cm
+ * Gamma: 2.20
+ * RGB color display
+ * First detailed timing is the preferred timing
+ * Color Characteristics:
+ * Red : 0.0000, 0.0000
+ * Green: 0.0000, 0.0000
+ * Blue : 0.0000, 0.0000
+ * White: 0.0000, 0.0000
+ * Established Timings I & II: none
+ * Standard Timings: none
+ * Detailed Timing Descriptors:
+ * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
+ * Hfront 88 Hsync 44 Hback 148 Hpol P
+ * Vfront 4 Vsync 5 Vback 36 Vpol P
+ * Display Product Name: 'Test EDID'
+ * Display Range Limits:
+ * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
+ * Dummy Descriptor:
+ * Checksum: 0xab
+ */
+static const unsigned char test_edid_dvi_1080p[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
+ 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+ 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+ 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x46, 0x1e, 0x46, 0x0f, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xab
+};
+
/*
* edid-decode (hex):
*
* 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
* 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
@@ -101,10 +159,112 @@ static const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0xd0
};
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
+ * 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
+ * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
+ * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 92
+ *
+ * 02 03 1b 81 e3 05 00 20 41 10 e2 00 4a 6d 03 0c
+ * 00 12 34 00 28 20 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ * EDID Structure Version & Revision: 1.3
+ * Vendor & Product Identification:
+ * Manufacturer: LNX
+ * Model: 42
+ * Made in: 2023
+ * Basic Display Parameters & Features:
+ * Digital display
+ * DFP 1.x compatible TMDS
+ * Maximum image size: 160 cm x 90 cm
+ * Gamma: 2.20
+ * Monochrome or grayscale display
+ * First detailed timing is the preferred timing
+ * Color Characteristics:
+ * Red : 0.0000, 0.0000
+ * Green: 0.0000, 0.0000
+ * Blue : 0.0000, 0.0000
+ * White: 0.0000, 0.0000
+ * Established Timings I & II:
+ * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
+ * Standard Timings: none
+ * Detailed Timing Descriptors:
+ * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
+ * Hfront 88 Hsync 44 Hback 148 Hpol P
+ * Vfront 4 Vsync 5 Vback 36 Vpol P
+ * Display Product Name: 'Test EDID'
+ * Display Range Limits:
+ * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
+ * Dummy Descriptor:
+ * Extension blocks: 1
+ * Checksum: 0x92
+ *
+ * ----------------
+ *
+ * Block 1, CTA-861 Extension Block:
+ * Revision: 3
+ * Underscans IT Video Formats by default
+ * Native detailed modes: 1
+ * Colorimetry Data Block:
+ * sRGB
+ * Video Data Block:
+ * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
+ * Video Capability Data Block:
+ * YCbCr quantization: No Data
+ * RGB quantization: Selectable (via AVI Q)
+ * PT scan behavior: No Data
+ * IT scan behavior: Always Underscanned
+ * CE scan behavior: Always Underscanned
+ * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
+ * Source physical address: 1.2.3.4
+ * Maximum TMDS clock: 340 MHz
+ * Extended HDMI video details:
+ * Checksum: 0xd0 Unused space in Extension Block: 100 bytes
+ */
+static const unsigned char test_edid_hdmi_1080p_rgb_max_340mhz[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
+ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+ 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+ 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x46, 0x00, 0x00, 0xc4, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x41, 0x02, 0x03, 0x1b, 0x81,
+ 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0x4a, 0x6d, 0x03, 0x0c,
+ 0x00, 0x12, 0x34, 0x00, 0x44, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xd0
+};
+
/*
* edid-decode (hex):
*
* 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
* 00 21 01 03 81 a0 5a 78 1a 00 00 00 00 00 00 00
--
2.45.0
The i915 driver has a property to force the RGB range of an HDMI output.
The vc4 driver then implemented the same property with the same
semantics. KWin has support for it, and a PR for mutter is also there to
support it.
Both drivers implementing the same property with the same semantics,
plus the userspace having support for it, is proof enough that it's
pretty much a de-facto standard now and we can provide helpers for it.
Let's plumb it into the newly created HDMI connector.
Reviewed-by: Dave Stevenson <[email protected]>
Acked-by: Pekka Paalanen <[email protected]>
Reviewed-by: Sebastian Wick <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
Documentation/gpu/kms-properties.csv | 1 -
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 4 +-
drivers/gpu/drm/drm_atomic.c | 2 +
drivers/gpu/drm/drm_atomic_uapi.c | 4 ++
drivers/gpu/drm/drm_connector.c | 88 +++++++++++++++++++++++++
include/drm/drm_connector.h | 36 ++++++++++
6 files changed, 133 insertions(+), 2 deletions(-)
diff --git a/Documentation/gpu/kms-properties.csv b/Documentation/gpu/kms-properties.csv
index 0f9590834829..caef14c532d4 100644
--- a/Documentation/gpu/kms-properties.csv
+++ b/Documentation/gpu/kms-properties.csv
@@ -15,11 +15,10 @@ Owner Module/Drivers,Group,Property Name,Type,Property Values,Object attached,De
,,“saturation”,RANGE,"Min=0, Max=100",Connector,TBD
,,“hue”,RANGE,"Min=0, Max=100",Connector,TBD
,Virtual GPU,“suggested X”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an X offset for a connector
,,“suggested Y”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an Y offset for a connector
,Optional,"""aspect ratio""",ENUM,"{ ""None"", ""4:3"", ""16:9"" }",Connector,TDB
-i915,Generic,"""Broadcast RGB""",ENUM,"{ ""Automatic"", ""Full"", ""Limited 16:235"" }",Connector,"When this property is set to Limited 16:235 and CTM is set, the hardware will be programmed with the result of the multiplication of CTM by the limited range matrix to ensure the pixels normally in the range 0..1.0 are remapped to the range 16/255..235/255."
,,“audio”,ENUM,"{ ""force-dvi"", ""off"", ""auto"", ""on"" }",Connector,TBD
,SDVO-TV,“mode”,ENUM,"{ ""NTSC_M"", ""NTSC_J"", ""NTSC_443"", ""PAL_B"" } etc.",Connector,TBD
,,"""left_margin""",RANGE,"Min=0, Max= SDVO dependent",Connector,TBD
,,"""right_margin""",RANGE,"Min=0, Max= SDVO dependent",Connector,TBD
,,"""top_margin""",RANGE,"Min=0, Max= SDVO dependent",Connector,TBD
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index f20dcfecb6b8..f038f567ab43 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -23,10 +23,11 @@ void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
{
unsigned int max_bpc = connector->max_bpc;
new_conn_state->max_bpc = max_bpc;
new_conn_state->max_requested_bpc = max_bpc;
+ new_conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_AUTO;
}
EXPORT_SYMBOL(__drm_atomic_helper_connector_hdmi_reset);
static const struct drm_display_mode *
connector_state_get_mode(const struct drm_connector_state *conn_state)
@@ -312,11 +313,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
ret = hdmi_compute_config(connector, new_conn_state, mode);
if (ret)
return ret;
- if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
+ if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb ||
+ old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state, crtc);
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 26f9e525c0a0..3e57d98d8418 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1143,10 +1143,12 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
drm_printf(p, "\tmax_requested_bpc=%d\n", state->max_requested_bpc);
drm_printf(p, "\tcolorspace=%s\n", drm_get_colorspace_name(state->colorspace));
if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+ drm_printf(p, "\tbroadcast_rgb=%s\n",
+ drm_hdmi_connector_get_broadcast_rgb_name(state->hdmi.broadcast_rgb));
drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
drm_printf(p, "\toutput_format=%s\n",
drm_hdmi_connector_get_output_format_name(state->hdmi.output_format));
drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate);
}
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index fc16fddee5c5..22bbb2d83e30 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -774,10 +774,12 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
fence_ptr);
} else if (property == connector->max_bpc_property) {
state->max_requested_bpc = val;
} else if (property == connector->privacy_screen_sw_state_property) {
state->privacy_screen_sw_state = val;
+ } else if (property == connector->broadcast_rgb_property) {
+ state->hdmi.broadcast_rgb = val;
} else if (connector->funcs->atomic_set_property) {
return connector->funcs->atomic_set_property(connector,
state, property, val);
} else {
drm_dbg_atomic(connector->dev,
@@ -857,10 +859,12 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
*val = 0;
} else if (property == connector->max_bpc_property) {
*val = state->max_requested_bpc;
} else if (property == connector->privacy_screen_sw_state_property) {
*val = state->privacy_screen_sw_state;
+ } else if (property == connector->broadcast_rgb_property) {
+ *val = state->hdmi.broadcast_rgb;
} else if (connector->funcs->atomic_get_property) {
return connector->funcs->atomic_get_property(connector,
state, property, val);
} else {
drm_dbg_atomic(dev,
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 555eac20e5a4..bdd3361ccc73 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -1210,10 +1210,33 @@ static const u32 dp_colorspaces =
BIT(DRM_MODE_COLORIMETRY_SYCC_601) |
BIT(DRM_MODE_COLORIMETRY_OPYCC_601) |
BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) |
BIT(DRM_MODE_COLORIMETRY_BT2020_YCC);
+static const struct drm_prop_enum_list broadcast_rgb_names[] = {
+ { DRM_HDMI_BROADCAST_RGB_AUTO, "Automatic" },
+ { DRM_HDMI_BROADCAST_RGB_FULL, "Full" },
+ { DRM_HDMI_BROADCAST_RGB_LIMITED, "Limited 16:235" },
+};
+
+/*
+ * drm_hdmi_connector_get_broadcast_rgb_name - Return a string for HDMI connector RGB broadcast selection
+ * @broadcast_rgb: Broadcast RGB selection to compute name of
+ *
+ * Returns: the name of the Broadcast RGB selection, or NULL if the type
+ * is not valid.
+ */
+const char *
+drm_hdmi_connector_get_broadcast_rgb_name(enum drm_hdmi_broadcast_rgb broadcast_rgb)
+{
+ if (broadcast_rgb >= ARRAY_SIZE(broadcast_rgb_names))
+ return NULL;
+
+ return broadcast_rgb_names[broadcast_rgb].name;
+}
+EXPORT_SYMBOL(drm_hdmi_connector_get_broadcast_rgb_name);
+
static const char * const output_format_str[] = {
[HDMI_COLORSPACE_RGB] = "RGB",
[HDMI_COLORSPACE_YUV420] = "YUV 4:2:0",
[HDMI_COLORSPACE_YUV422] = "YUV 4:2:2",
[HDMI_COLORSPACE_YUV444] = "YUV 4:4:4",
@@ -1706,10 +1729,42 @@ void drm_connector_attach_dp_subconnector_property(struct drm_connector *connect
EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property);
/**
* DOC: HDMI connector properties
*
+ * Broadcast RGB (HDMI specific)
+ * Indicates the Quantization Range (Full vs Limited) used. The color
+ * processing pipeline will be adjusted to match the value of the
+ * property, and the Infoframes will be generated and sent accordingly.
+ *
+ * This property is only relevant if the HDMI output format is RGB. If
+ * it's one of the YCbCr variant, it will be ignored.
+ *
+ * The CRTC attached to the connector must be configured by user-space to
+ * always produce full-range pixels.
+ *
+ * The value of this property can be one of the following:
+ *
+ * Automatic:
+ * The quantization range is selected automatically based on the
+ * mode according to the HDMI specifications (HDMI 1.4b - Section
+ * 6.6 - Video Quantization Ranges).
+ *
+ * Full:
+ * Full quantization range is forced.
+ *
+ * Limited 16:235:
+ * Limited quantization range is forced. Unlike the name suggests,
+ * this works for any number of bits-per-component.
+ *
+ * Property values other than Automatic can result in colors being off (if
+ * limited is selected but the display expects full), or a black screen
+ * (if full is selected but the display expects limited).
+ *
+ * Drivers can set up this property by calling
+ * drm_connector_attach_broadcast_rgb_property().
+ *
* content type (HDMI specific):
* Indicates content type setting to be used in HDMI infoframes to indicate
* content type for the external device, so that it adjusts its display
* settings accordingly.
*
@@ -2568,10 +2623,43 @@ int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *conn
return 0;
}
EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property);
+/**
+ * drm_connector_attach_broadcast_rgb_property - attach "Broadcast RGB" property
+ * @connector: connector to attach the property on.
+ *
+ * This is used to add support for forcing the RGB range on a connector
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_connector_attach_broadcast_rgb_property(struct drm_connector *connector)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_property *prop;
+
+ prop = connector->broadcast_rgb_property;
+ if (!prop) {
+ prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
+ "Broadcast RGB",
+ broadcast_rgb_names,
+ ARRAY_SIZE(broadcast_rgb_names));
+ if (!prop)
+ return -EINVAL;
+
+ connector->broadcast_rgb_property = prop;
+ }
+
+ drm_object_attach_property(&connector->base, prop,
+ DRM_HDMI_BROADCAST_RGB_AUTO);
+
+ return 0;
+}
+EXPORT_SYMBOL(drm_connector_attach_broadcast_rgb_property);
+
/**
* drm_connector_attach_colorspace_property - attach "Colorspace" property
* @connector: connector to attach the property on.
*
* This is used to allow the userspace to signal the output colorspace
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 3c0b6694074f..a40eaf3a8ce4 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -367,10 +367,33 @@ enum drm_panel_orientation {
DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,
DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
};
+/**
+ * enum drm_hdmi_broadcast_rgb - Broadcast RGB Selection for an HDMI @drm_connector
+ */
+enum drm_hdmi_broadcast_rgb {
+ /**
+ * @DRM_HDMI_BROADCAST_RGB_AUTO: The RGB range is selected
+ * automatically based on the mode.
+ */
+ DRM_HDMI_BROADCAST_RGB_AUTO,
+
+ /**
+ * @DRM_HDMI_BROADCAST_RGB_FULL: Full range RGB is forced.
+ */
+ DRM_HDMI_BROADCAST_RGB_FULL,
+
+ /**
+ * @DRM_HDMI_BROADCAST_RGB_LIMITED: Limited range RGB is forced.
+ */
+ DRM_HDMI_BROADCAST_RGB_LIMITED,
+};
+
+const char *
+drm_hdmi_connector_get_broadcast_rgb_name(enum drm_hdmi_broadcast_rgb broadcast_rgb);
const char *
drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt);
/**
* struct drm_monitor_range_info - Panel's Monitor range in EDID for
@@ -1039,10 +1062,16 @@ struct drm_connector_state {
/**
* @hdmi: HDMI-related variable and properties. Filled by
* @drm_atomic_helper_connector_hdmi_check().
*/
struct {
+ /**
+ * @broadcast_rgb: Connector property to pass the
+ * Broadcast RGB selection value.
+ */
+ enum drm_hdmi_broadcast_rgb broadcast_rgb;
+
/**
* @output_bpc: Bits per color channel to output.
*/
unsigned int output_bpc;
@@ -1751,10 +1780,16 @@ struct drm_connector {
* @privacy_screen_hw_state_property: Optional atomic property for the
* connector to report the actual integrated privacy screen state.
*/
struct drm_property *privacy_screen_hw_state_property;
+ /**
+ * @broadcast_rgb_property: Connector property to set the
+ * Broadcast RGB selection to output with.
+ */
+ struct drm_property *broadcast_rgb_property;
+
#define DRM_CONNECTOR_POLL_HPD (1 << 0)
#define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
#define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
/**
@@ -2090,10 +2125,11 @@ int drm_mode_create_scaling_mode_property(struct drm_device *dev);
int drm_connector_attach_content_type_property(struct drm_connector *dev);
int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
u32 scaling_mode_mask);
int drm_connector_attach_vrr_capable_property(
struct drm_connector *connector);
+int drm_connector_attach_broadcast_rgb_property(struct drm_connector *connector);
int drm_connector_attach_colorspace_property(struct drm_connector *connector);
int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector);
bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state,
struct drm_connector_state *new_state);
int drm_mode_create_aspect_ratio_property(struct drm_device *dev);
--
2.45.0
This had a bunch of kunit tests to make sure our code to handle the
Broadcast RGB property behaves properly.
This requires bringing a bit of infrastructure to create mock HDMI
connectors, with custom EDIDs.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_connector_test.c | 116 ++++++++++++++++
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 151 +++++++++++++++++++++
2 files changed, 267 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 34d96f7fbb25..672b74bc9e23 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -564,10 +564,67 @@ static struct kunit_case drm_get_tv_mode_from_name_tests[] = {
static struct kunit_suite drm_get_tv_mode_from_name_test_suite = {
.name = "drm_get_tv_mode_from_name",
.test_cases = drm_get_tv_mode_from_name_tests,
};
+struct drm_hdmi_connector_get_broadcast_rgb_name_test {
+ unsigned int kind;
+ const char *expected_name;
+};
+
+#define BROADCAST_RGB_TEST(_kind, _name) \
+ { \
+ .kind = _kind, \
+ .expected_name = _name, \
+ }
+
+static void drm_test_drm_hdmi_connector_get_broadcast_rgb_name(struct kunit *test)
+{
+ const struct drm_hdmi_connector_get_broadcast_rgb_name_test *params =
+ test->param_value;
+
+ KUNIT_EXPECT_STREQ(test,
+ drm_hdmi_connector_get_broadcast_rgb_name(params->kind),
+ params->expected_name);
+}
+
+static const
+struct drm_hdmi_connector_get_broadcast_rgb_name_test
+drm_hdmi_connector_get_broadcast_rgb_name_valid_tests[] = {
+ BROADCAST_RGB_TEST(DRM_HDMI_BROADCAST_RGB_AUTO, "Automatic"),
+ BROADCAST_RGB_TEST(DRM_HDMI_BROADCAST_RGB_FULL, "Full"),
+ BROADCAST_RGB_TEST(DRM_HDMI_BROADCAST_RGB_LIMITED, "Limited 16:235"),
+};
+
+static void
+drm_hdmi_connector_get_broadcast_rgb_name_valid_desc(const struct drm_hdmi_connector_get_broadcast_rgb_name_test *t,
+ char *desc)
+{
+ sprintf(desc, "%s", t->expected_name);
+}
+
+KUNIT_ARRAY_PARAM(drm_hdmi_connector_get_broadcast_rgb_name_valid,
+ drm_hdmi_connector_get_broadcast_rgb_name_valid_tests,
+ drm_hdmi_connector_get_broadcast_rgb_name_valid_desc);
+
+static void drm_test_drm_hdmi_connector_get_broadcast_rgb_name_invalid(struct kunit *test)
+{
+ KUNIT_EXPECT_NULL(test, drm_hdmi_connector_get_broadcast_rgb_name(3));
+};
+
+static struct kunit_case drm_hdmi_connector_get_broadcast_rgb_name_tests[] = {
+ KUNIT_CASE_PARAM(drm_test_drm_hdmi_connector_get_broadcast_rgb_name,
+ drm_hdmi_connector_get_broadcast_rgb_name_valid_gen_params),
+ KUNIT_CASE(drm_test_drm_hdmi_connector_get_broadcast_rgb_name_invalid),
+ { }
+};
+
+static struct kunit_suite drm_hdmi_connector_get_broadcast_rgb_name_test_suite = {
+ .name = "drm_hdmi_connector_get_broadcast_rgb_name",
+ .test_cases = drm_hdmi_connector_get_broadcast_rgb_name_tests,
+};
+
struct drm_hdmi_connector_get_output_format_name_test {
unsigned int kind;
const char *expected_name;
};
@@ -622,10 +679,67 @@ static struct kunit_case drm_hdmi_connector_get_output_format_name_tests[] = {
static struct kunit_suite drm_hdmi_connector_get_output_format_name_test_suite = {
.name = "drm_hdmi_connector_get_output_format_name",
.test_cases = drm_hdmi_connector_get_output_format_name_tests,
};
+static void drm_test_drm_connector_attach_broadcast_rgb_property(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ struct drm_connector *connector = &priv->connector;
+ struct drm_property *prop;
+ int ret;
+
+ ret = drmm_connector_init(&priv->drm, connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ret = drm_connector_attach_broadcast_rgb_property(connector);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ prop = connector->broadcast_rgb_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+}
+
+static void drm_test_drm_connector_attach_broadcast_rgb_property_hdmi_connector(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ struct drm_connector *connector = &priv->connector;
+ struct drm_property *prop;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ ret = drm_connector_attach_broadcast_rgb_property(connector);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ prop = connector->broadcast_rgb_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+}
+
+static struct kunit_case drm_connector_attach_broadcast_rgb_property_tests[] = {
+ KUNIT_CASE(drm_test_drm_connector_attach_broadcast_rgb_property),
+ KUNIT_CASE(drm_test_drm_connector_attach_broadcast_rgb_property_hdmi_connector),
+ { }
+};
+
+static struct kunit_suite drm_connector_attach_broadcast_rgb_property_test_suite = {
+ .name = "drm_connector_attach_broadcast_rgb_property",
+ .init = drm_test_connector_init,
+ .test_cases = drm_connector_attach_broadcast_rgb_property_tests,
+};
+
/*
* Test that for a given mode, with 8bpc and an RGB output the TMDS
* character rate is equal to the mode pixel clock.
*/
static void drm_test_drm_hdmi_compute_mode_clock_rgb(struct kunit *test)
@@ -916,12 +1030,14 @@ static struct kunit_suite drm_hdmi_compute_mode_clock_test_suite = {
};
kunit_test_suites(
&drmm_connector_hdmi_init_test_suite,
&drmm_connector_init_test_suite,
+ &drm_connector_attach_broadcast_rgb_property_test_suite,
&drm_get_tv_mode_from_name_test_suite,
&drm_hdmi_compute_mode_clock_test_suite,
+ &drm_hdmi_connector_get_broadcast_rgb_name_test_suite,
&drm_hdmi_connector_get_output_format_name_test_suite
);
MODULE_AUTHOR("Maxime Ripard <[email protected]>");
MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 968204781928..ff9a882201eb 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -225,10 +225,138 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test,
KUNIT_ASSERT_EQ(test, ret, 0);
return priv;
}
+/*
+ * Test that if we change the RGB quantization property to a different
+ * value, we trigger a mode change on the connector's CRTC, which will
+ * in turn disable/enable the connector.
+ */
+static void drm_test_check_broadcast_rgb_crtc_mode_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ conn = &priv->connector;
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_FULL;
+
+ KUNIT_ASSERT_NE(test,
+ old_conn_state->hdmi.broadcast_rgb,
+ new_conn_state->hdmi.broadcast_rgb);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ new_conn_state = drm_atomic_get_new_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+ KUNIT_EXPECT_EQ(test, new_conn_state->hdmi.broadcast_rgb, DRM_HDMI_BROADCAST_RGB_FULL);
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+ KUNIT_EXPECT_TRUE(test, crtc_state->mode_changed);
+}
+
+/*
+ * Test that if we set the RGB quantization property to the same value,
+ * we don't trigger a mode change on the connector's CRTC and leave the
+ * connector unaffected.
+ */
+static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ conn = &priv->connector;
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state->hdmi.broadcast_rgb = old_conn_state->hdmi.broadcast_rgb;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state = drm_atomic_get_new_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ KUNIT_EXPECT_EQ(test,
+ old_conn_state->hdmi.broadcast_rgb,
+ new_conn_state->hdmi.broadcast_rgb);
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+ KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
+}
+
/*
* Test that if we change the maximum bpc property to a different value,
* we trigger a mode change on the connector's CRTC, which will in turn
* disable/enable the connector.
*/
@@ -1064,10 +1192,12 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
}
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
+ KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_changed),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_not_changed),
KUNIT_CASE(drm_test_check_hdmi_funcs_reject_rate),
KUNIT_CASE(drm_test_check_max_tmds_rate_bpc_fallback),
KUNIT_CASE(drm_test_check_max_tmds_rate_format_fallback),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
@@ -1095,10 +1225,30 @@ static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
static struct kunit_suite drm_atomic_helper_connector_hdmi_check_test_suite = {
.name = "drm_atomic_helper_connector_hdmi_check",
.test_cases = drm_atomic_helper_connector_hdmi_check_tests,
};
+/*
+ * Test that the value of the Broadcast RGB property out of reset is set
+ * to auto.
+ */
+static void drm_test_check_broadcast_rgb_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.broadcast_rgb, DRM_HDMI_BROADCAST_RGB_AUTO);
+}
+
/*
* Test that if the connector was initialised with a maximum bpc of 8,
* the value of the max_bpc and max_requested_bpc properties out of
* reset are also set to 8, and output_bpc is set to 0 and will be
* filled at atomic_check time.
@@ -1212,10 +1362,11 @@ static void drm_test_check_tmds_char_value(struct kunit *test)
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->hdmi.tmds_char_rate, 0);
}
static struct kunit_case drm_atomic_helper_connector_hdmi_reset_tests[] = {
+ KUNIT_CASE(drm_test_check_broadcast_rgb_value),
KUNIT_CASE(drm_test_check_bpc_8_value),
KUNIT_CASE(drm_test_check_bpc_10_value),
KUNIT_CASE(drm_test_check_bpc_12_value),
KUNIT_CASE(drm_test_check_format_value),
KUNIT_CASE(drm_test_check_tmds_char_value),
--
2.45.0
HDMI controller drivers will need to figure out the RGB range they need
to configure based on a mode and property values. Let's expose that in
the HDMI connector state so drivers can just use that value.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 29 +++++++++++++++++++++++++
drivers/gpu/drm/drm_atomic.c | 1 +
include/drm/drm_connector.h | 6 +++++
3 files changed, 36 insertions(+)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index f038f567ab43..c3a10f9f7ecd 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -49,10 +49,37 @@ connector_state_get_mode(const struct drm_connector_state *conn_state)
return NULL;
return &crtc_state->mode;
}
+static bool hdmi_is_limited_range(const struct drm_connector *connector,
+ const struct drm_connector_state *conn_state)
+{
+ const struct drm_display_info *info = &connector->display_info;
+ const struct drm_display_mode *mode =
+ connector_state_get_mode(conn_state);
+
+ /*
+ * The Broadcast RGB property only applies to RGB format, and
+ * i915 just assumes limited range for YCbCr output, so let's
+ * just do the same.
+ */
+ if (conn_state->hdmi.output_format != HDMI_COLORSPACE_RGB)
+ return true;
+
+ if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL)
+ return false;
+
+ if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_LIMITED)
+ return true;
+
+ if (!info->is_hdmi)
+ return false;
+
+ return drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED;
+}
+
static bool
sink_supports_format_bpc(const struct drm_connector *connector,
const struct drm_display_info *info,
const struct drm_display_mode *mode,
unsigned int format, unsigned int bpc)
@@ -309,10 +336,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
drm_atomic_get_new_connector_state(state, connector);
const struct drm_display_mode *mode =
connector_state_get_mode(new_conn_state);
int ret;
+ new_conn_state->hdmi.is_limited_range = hdmi_is_limited_range(connector, new_conn_state);
+
ret = hdmi_compute_config(connector, new_conn_state, mode);
if (ret)
return ret;
if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb ||
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 3e57d98d8418..07b4b394e3bf 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1145,10 +1145,11 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
drm_printf(p, "\tbroadcast_rgb=%s\n",
drm_hdmi_connector_get_broadcast_rgb_name(state->hdmi.broadcast_rgb));
+ drm_printf(p, "\tis_limited_range=%c\n", state->hdmi.is_limited_range ? 'y' : 'n');
drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
drm_printf(p, "\toutput_format=%s\n",
drm_hdmi_connector_get_output_format_name(state->hdmi.output_format));
drm_printf(p, "\ttmds_char_rate=%llu\n", state->hdmi.tmds_char_rate);
}
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index a40eaf3a8ce4..1fca26d51218 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1068,10 +1068,16 @@ struct drm_connector_state {
* @broadcast_rgb: Connector property to pass the
* Broadcast RGB selection value.
*/
enum drm_hdmi_broadcast_rgb broadcast_rgb;
+ /**
+ * @is_full_range: Is the output supposed to use a full
+ * RGB Quantization Range or not?
+ */
+ bool is_limited_range;
+
/**
* @output_bpc: Bits per color channel to output.
*/
unsigned int output_bpc;
--
2.45.0
There has been some discussions recently about the infoframes sent by
drivers and if they were properly generated.
In parallel, there's been some interest in creating an infoframe-decode
tool similar to edid-decode.
Both would be much easier if we were to expose the infoframes programmed
in the hardware. It won't be perfect since we have no guarantee that
it's actually what goes through the wire, but it's the best we can do.
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/drm_debugfs.c | 152 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 152 insertions(+)
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c
index 08fcefd804bc..dd39a5b7a711 100644
--- a/drivers/gpu/drm/drm_debugfs.c
+++ b/drivers/gpu/drm/drm_debugfs.c
@@ -518,10 +518,160 @@ static const struct file_operations drm_connector_fops = {
.llseek = seq_lseek,
.release = single_release,
.write = connector_write
};
+#define HDMI_MAX_INFOFRAME_SIZE 29
+
+static ssize_t
+audio_infoframe_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct drm_connector_hdmi_infoframe *infoframe;
+ struct drm_connector *connector;
+ union hdmi_infoframe *frame;
+ u8 buf[HDMI_INFOFRAME_SIZE(AUDIO)];
+ ssize_t len = 0;
+
+ connector = filp->private_data;
+ mutex_lock(&connector->hdmi.infoframes.lock);
+
+ infoframe = &connector->hdmi.infoframes.audio;
+ if (!infoframe->set)
+ goto out;
+
+ frame = &infoframe->data;
+ len = hdmi_infoframe_pack(frame, buf, sizeof(buf));
+ if (len < 0)
+ goto out;
+
+ len = simple_read_from_buffer(ubuf, count, ppos, buf, len);
+
+out:
+ mutex_unlock(&connector->hdmi.infoframes.lock);
+ return len;
+}
+
+static const struct file_operations audio_infoframe_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .read = audio_infoframe_read,
+};
+
+static int create_hdmi_audio_infoframe_file(struct drm_connector *connector,
+ struct dentry *parent)
+{
+ struct dentry *file;
+
+ file = debugfs_create_file("audio", 0400, parent, connector, &audio_infoframe_fops);
+ if (IS_ERR(file))
+ return PTR_ERR(file);
+
+ return 0;
+}
+
+#define DEFINE_INFOFRAME_FILE(_f) \
+static ssize_t _f##_read_infoframe(struct file *filp, \
+ char __user *ubuf, \
+ size_t count, \
+ loff_t *ppos) \
+{ \
+ struct drm_connector_hdmi_infoframe *infoframe; \
+ struct drm_connector_state *conn_state; \
+ struct drm_connector *connector; \
+ union hdmi_infoframe *frame; \
+ struct drm_device *dev; \
+ u8 buf[HDMI_MAX_INFOFRAME_SIZE]; \
+ ssize_t len = 0; \
+ \
+ connector = filp->private_data; \
+ dev = connector->dev; \
+ \
+ drm_modeset_lock(&dev->mode_config.connection_mutex, NULL); \
+ \
+ conn_state = connector->state; \
+ infoframe = &conn_state->hdmi.infoframes._f; \
+ if (!infoframe->set) \
+ goto out; \
+ \
+ frame = &infoframe->data; \
+ len = hdmi_infoframe_pack(frame, buf, sizeof(buf)); \
+ if (len < 0) \
+ goto out; \
+ \
+ len = simple_read_from_buffer(ubuf, count, ppos, buf, len); \
+ \
+out: \
+ drm_modeset_unlock(&dev->mode_config.connection_mutex); \
+ return len; \
+} \
+\
+static const struct file_operations _f##_infoframe_fops = { \
+ .owner = THIS_MODULE, \
+ .open = simple_open, \
+ .read = _f##_read_infoframe, \
+}; \
+\
+static int create_hdmi_## _f ## _infoframe_file (struct drm_connector *connector, \
+ struct dentry *parent) \
+{ \
+ struct dentry *file; \
+ \
+ file = debugfs_create_file(#_f, 0400, parent, connector, & _f ## _infoframe_fops); \
+ if (IS_ERR(file)) \
+ return PTR_ERR(file); \
+ \
+ return 0; \
+}
+
+DEFINE_INFOFRAME_FILE(avi);
+DEFINE_INFOFRAME_FILE(hdmi);
+DEFINE_INFOFRAME_FILE(hdr_drm);
+DEFINE_INFOFRAME_FILE(spd);
+
+static int create_hdmi_infoframe_files(struct drm_connector *connector,
+ struct dentry *parent)
+{
+ int ret;
+
+ ret = create_hdmi_audio_infoframe_file(connector, parent);
+ if (ret)
+ return ret;
+
+ ret = create_hdmi_avi_infoframe_file(connector, parent);
+ if (ret)
+ return ret;
+
+ ret = create_hdmi_hdmi_infoframe_file(connector, parent);
+ if (ret)
+ return ret;
+
+ ret = create_hdmi_hdr_drm_infoframe_file(connector, parent);
+ if (ret)
+ return ret;
+
+ ret = create_hdmi_spd_infoframe_file(connector, parent);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void hdmi_debugfs_add(struct drm_connector *connector)
+{
+ struct dentry *dir;
+
+ if (!(connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector->connector_type == DRM_MODE_CONNECTOR_HDMIB))
+ return;
+
+ dir = debugfs_create_dir("infoframes", connector->debugfs_entry);
+ if (IS_ERR(dir))
+ return;
+
+ create_hdmi_infoframe_files(connector, dir);
+}
+
void drm_debugfs_connector_add(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct dentry *root;
@@ -545,10 +695,12 @@ void drm_debugfs_connector_add(struct drm_connector *connector)
/* max bpc */
debugfs_create_file("output_bpc", 0444, root, connector,
&output_bpc_fops);
+ hdmi_debugfs_add(connector);
+
if (connector->funcs->debugfs_init)
connector->funcs->debugfs_init(connector, root);
}
void drm_debugfs_connector_remove(struct drm_connector *connector)
--
2.45.0
The new HDMI connector infrastructure allows us to remove a lot of
boilerplate, so let's switch to it.
Acked-by: Sui Jingfeng <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/vc4/Kconfig | 1 +
drivers/gpu/drm/vc4/vc4_hdmi.c | 644 +++++--------------------------------
drivers/gpu/drm/vc4/vc4_hdmi.h | 44 +--
drivers/gpu/drm/vc4/vc4_hdmi_phy.c | 6 +-
4 files changed, 92 insertions(+), 603 deletions(-)
diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig
index 91dcf8d174d6..269b5f26b2ea 100644
--- a/drivers/gpu/drm/vc4/Kconfig
+++ b/drivers/gpu/drm/vc4/Kconfig
@@ -8,10 +8,11 @@ config DRM_VC4
depends on DRM
depends on SND && SND_SOC
depends on COMMON_CLK
depends on PM
select DRM_DISPLAY_HDMI_HELPER
+ select DRM_DISPLAY_HDMI_STATE_HELPER
select DRM_DISPLAY_HELPER
select DRM_KMS_HELPER
select DRM_GEM_DMA_HELPER
select DRM_PANEL_BRIDGE
select SND_PCM
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index d30f8e8e8967..d57c4a5948c8 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -30,10 +30,11 @@
* The driver does not yet support CEC control, though the HDMI
* encoder block has CEC support.
*/
#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_hdmi_state_helper.h>
#include <drm/display/drm_scdc_helper.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
#include <drm/drm_probe_helper.h>
@@ -108,29 +109,10 @@
#define HSM_MIN_CLOCK_FREQ 120000000
#define CEC_CLOCK_FREQ 40000
#define HDMI_14_MAX_TMDS_CLK (340 * 1000 * 1000)
-static const char * const output_format_str[] = {
- [VC4_HDMI_OUTPUT_RGB] = "RGB",
- [VC4_HDMI_OUTPUT_YUV420] = "YUV 4:2:0",
- [VC4_HDMI_OUTPUT_YUV422] = "YUV 4:2:2",
- [VC4_HDMI_OUTPUT_YUV444] = "YUV 4:4:4",
-};
-
-static const char *vc4_hdmi_output_fmt_str(enum vc4_hdmi_output_format fmt)
-{
- if (fmt >= ARRAY_SIZE(output_format_str))
- return "invalid";
-
- return output_format_str[fmt];
-}
-
-static unsigned long long
-vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
- unsigned int bpc, enum vc4_hdmi_output_format fmt);
-
static bool vc4_hdmi_supports_scrambling(struct vc4_hdmi *vc4_hdmi)
{
struct drm_display_info *display = &vc4_hdmi->connector.display_info;
lockdep_assert_held(&vc4_hdmi->mutex);
@@ -145,32 +127,17 @@ static bool vc4_hdmi_supports_scrambling(struct vc4_hdmi *vc4_hdmi)
return true;
}
static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode,
unsigned int bpc,
- enum vc4_hdmi_output_format fmt)
+ enum hdmi_colorspace fmt)
{
- unsigned long long clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
+ unsigned long long clock = drm_hdmi_compute_mode_clock(mode, bpc, fmt);
return clock > HDMI_14_MAX_TMDS_CLK;
}
-static bool vc4_hdmi_is_full_range(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_state)
-{
- const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
- struct drm_display_info *display = &vc4_hdmi->connector.display_info;
-
- if (vc4_state->broadcast_rgb == VC4_HDMI_BROADCAST_RGB_LIMITED)
- return false;
- else if (vc4_state->broadcast_rgb == VC4_HDMI_BROADCAST_RGB_FULL)
- return true;
-
- return !display->is_hdmi ||
- drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL;
-}
-
static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
{
struct drm_debugfs_entry *entry = m->private;
struct vc4_hdmi *vc4_hdmi = entry->file.data;
struct drm_device *drm = vc4_hdmi->connector.dev;
@@ -522,11 +489,11 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
if (!vc4->hvs->vc5_hdmi_enable_hdmi_20) {
struct drm_device *drm = connector->dev;
const struct drm_display_mode *mode;
list_for_each_entry(mode, &connector->probed_modes, head) {
- if (vc4_hdmi_mode_needs_scrambling(mode, 8, VC4_HDMI_OUTPUT_RGB)) {
+ if (vc4_hdmi_mode_needs_scrambling(mode, 8, HDMI_COLORSPACE_RGB)) {
drm_warn_once(drm, "The core clock cannot reach frequencies high enough to support 4k @ 60Hz.");
drm_warn_once(drm, "Please change your config.txt file to add hdmi_enable_4kp60.");
}
}
}
@@ -537,16 +504,12 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector,
struct drm_atomic_state *state)
{
struct drm_connector_state *old_state =
drm_atomic_get_old_connector_state(state, connector);
- struct vc4_hdmi_connector_state *old_vc4_state =
- conn_state_to_vc4_hdmi_conn_state(old_state);
struct drm_connector_state *new_state =
drm_atomic_get_new_connector_state(state, connector);
- struct vc4_hdmi_connector_state *new_vc4_state =
- conn_state_to_vc4_hdmi_conn_state(new_state);
struct drm_crtc *crtc = new_state->crtc;
if (!crtc)
return 0;
@@ -574,174 +537,66 @@ static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector,
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
return ret;
}
- if (old_state->colorspace != new_state->colorspace ||
- old_vc4_state->broadcast_rgb != new_vc4_state->broadcast_rgb ||
- !drm_connector_atomic_hdr_metadata_equal(old_state, new_state)) {
+ if (old_state->colorspace != new_state->colorspace) {
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
crtc_state->mode_changed = true;
}
- return 0;
-}
-
-static int vc4_hdmi_connector_get_property(struct drm_connector *connector,
- const struct drm_connector_state *state,
- struct drm_property *property,
- uint64_t *val)
-{
- struct drm_device *drm = connector->dev;
- struct vc4_hdmi *vc4_hdmi =
- connector_to_vc4_hdmi(connector);
- const struct vc4_hdmi_connector_state *vc4_conn_state =
- conn_state_to_vc4_hdmi_conn_state(state);
-
- if (property == vc4_hdmi->broadcast_rgb_property) {
- *val = vc4_conn_state->broadcast_rgb;
- } else {
- drm_dbg(drm, "Unknown property [PROP:%d:%s]\n",
- property->base.id, property->name);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int vc4_hdmi_connector_set_property(struct drm_connector *connector,
- struct drm_connector_state *state,
- struct drm_property *property,
- uint64_t val)
-{
- struct drm_device *drm = connector->dev;
- struct vc4_hdmi *vc4_hdmi =
- connector_to_vc4_hdmi(connector);
- struct vc4_hdmi_connector_state *vc4_conn_state =
- conn_state_to_vc4_hdmi_conn_state(state);
-
- if (property == vc4_hdmi->broadcast_rgb_property) {
- vc4_conn_state->broadcast_rgb = val;
- return 0;
- }
-
- drm_dbg(drm, "Unknown property [PROP:%d:%s]\n",
- property->base.id, property->name);
- return -EINVAL;
+ return drm_atomic_helper_connector_hdmi_check(connector, state);
}
static void vc4_hdmi_connector_reset(struct drm_connector *connector)
{
- struct vc4_hdmi_connector_state *old_state =
- conn_state_to_vc4_hdmi_conn_state(connector->state);
- struct vc4_hdmi_connector_state *new_state =
- kzalloc(sizeof(*new_state), GFP_KERNEL);
-
- if (connector->state)
- __drm_atomic_helper_connector_destroy_state(connector->state);
-
- kfree(old_state);
- __drm_atomic_helper_connector_reset(connector, &new_state->base);
-
- if (!new_state)
- return;
-
- new_state->base.max_bpc = 8;
- new_state->base.max_requested_bpc = 8;
- new_state->output_format = VC4_HDMI_OUTPUT_RGB;
- new_state->broadcast_rgb = VC4_HDMI_BROADCAST_RGB_AUTO;
+ drm_atomic_helper_connector_reset(connector);
+ __drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
drm_atomic_helper_connector_tv_margins_reset(connector);
}
-static struct drm_connector_state *
-vc4_hdmi_connector_duplicate_state(struct drm_connector *connector)
-{
- struct drm_connector_state *conn_state = connector->state;
- struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
- struct vc4_hdmi_connector_state *new_state;
-
- new_state = kzalloc(sizeof(*new_state), GFP_KERNEL);
- if (!new_state)
- return NULL;
-
- new_state->tmds_char_rate = vc4_state->tmds_char_rate;
- new_state->output_bpc = vc4_state->output_bpc;
- new_state->output_format = vc4_state->output_format;
- new_state->broadcast_rgb = vc4_state->broadcast_rgb;
- __drm_atomic_helper_connector_duplicate_state(connector, &new_state->base);
-
- return &new_state->base;
-}
-
-static void vc4_hdmi_connector_destroy_state(struct drm_connector *connector,
- struct drm_connector_state *state)
-{
- struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(state);
-
- __drm_atomic_helper_connector_destroy_state(state);
- kfree(vc4_state);
-}
-
static const struct drm_connector_funcs vc4_hdmi_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.reset = vc4_hdmi_connector_reset,
- .atomic_duplicate_state = vc4_hdmi_connector_duplicate_state,
- .atomic_destroy_state = vc4_hdmi_connector_destroy_state,
- .atomic_get_property = vc4_hdmi_connector_get_property,
- .atomic_set_property = vc4_hdmi_connector_set_property,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = {
.detect_ctx = vc4_hdmi_connector_detect_ctx,
.get_modes = vc4_hdmi_connector_get_modes,
.atomic_check = vc4_hdmi_connector_atomic_check,
};
-static const struct drm_prop_enum_list broadcast_rgb_names[] = {
- { VC4_HDMI_BROADCAST_RGB_AUTO, "Automatic" },
- { VC4_HDMI_BROADCAST_RGB_FULL, "Full" },
- { VC4_HDMI_BROADCAST_RGB_LIMITED, "Limited 16:235" },
-};
-
-static void
-vc4_hdmi_attach_broadcast_rgb_property(struct drm_device *dev,
- struct vc4_hdmi *vc4_hdmi)
-{
- struct drm_property *prop = vc4_hdmi->broadcast_rgb_property;
-
- if (!prop) {
- prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
- "Broadcast RGB",
- broadcast_rgb_names,
- ARRAY_SIZE(broadcast_rgb_names));
- if (!prop)
- return;
-
- vc4_hdmi->broadcast_rgb_property = prop;
- }
-
- drm_object_attach_property(&vc4_hdmi->connector.base, prop,
- VC4_HDMI_BROADCAST_RGB_AUTO);
-}
+static const struct drm_connector_hdmi_funcs vc4_hdmi_hdmi_connector_funcs;
static int vc4_hdmi_connector_init(struct drm_device *dev,
struct vc4_hdmi *vc4_hdmi)
{
struct drm_connector *connector = &vc4_hdmi->connector;
struct drm_encoder *encoder = &vc4_hdmi->encoder.base;
+ unsigned int max_bpc = 8;
int ret;
- ret = drmm_connector_init(dev, connector,
- &vc4_hdmi_connector_funcs,
- DRM_MODE_CONNECTOR_HDMIA,
- vc4_hdmi->ddc);
+ if (vc4_hdmi->variant->supports_hdr)
+ max_bpc = 12;
+
+ ret = drmm_connector_hdmi_init(dev, connector,
+ "Broadcom", "Videocore",
+ &vc4_hdmi_connector_funcs,
+ &vc4_hdmi_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ vc4_hdmi->ddc,
+ BIT(HDMI_COLORSPACE_RGB) |
+ BIT(HDMI_COLORSPACE_YUV422) |
+ BIT(HDMI_COLORSPACE_YUV444),
+ max_bpc);
if (ret)
return ret;
drm_connector_helper_add(connector, &vc4_hdmi_connector_helper_funcs);
@@ -761,34 +616,31 @@ static int vc4_hdmi_connector_init(struct drm_device *dev,
if (ret)
return ret;
drm_connector_attach_colorspace_property(connector);
drm_connector_attach_tv_margin_properties(connector);
- drm_connector_attach_max_bpc_property(connector, 8, 12);
connector->polled = (DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT);
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;
connector->stereo_allowed = 1;
- if (vc4_hdmi->variant->supports_hdr)
- drm_connector_attach_hdr_output_metadata_property(connector);
-
- vc4_hdmi_attach_broadcast_rgb_property(dev, vc4_hdmi);
+ ret = drm_connector_attach_broadcast_rgb_property(connector);
+ if (ret)
+ return ret;
drm_connector_attach_encoder(connector, encoder);
return 0;
}
-static int vc4_hdmi_stop_packet(struct drm_encoder *encoder,
+static int vc4_hdmi_stop_packet(struct vc4_hdmi *vc4_hdmi,
enum hdmi_infoframe_type type,
bool poll)
{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_device *drm = vc4_hdmi->connector.dev;
u32 packet_id = type - 0x80;
unsigned long flags;
int ret = 0;
int idx;
@@ -808,41 +660,45 @@ static int vc4_hdmi_stop_packet(struct drm_encoder *encoder,
drm_dev_exit(idx);
return ret;
}
-static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder,
- union hdmi_infoframe *frame)
+static int vc4_hdmi_write_infoframe(struct drm_connector *connector,
+ enum hdmi_infoframe_type type,
+ const u8 *infoframe, size_t len)
{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_device *drm = vc4_hdmi->connector.dev;
- u32 packet_id = frame->any.type - 0x80;
+ struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
+ struct drm_device *drm = connector->dev;
+ u32 packet_id = type - 0x80;
const struct vc4_hdmi_register *ram_packet_start =
&vc4_hdmi->variant->registers[HDMI_RAM_PACKET_START];
u32 packet_reg = ram_packet_start->offset + VC4_HDMI_PACKET_STRIDE * packet_id;
u32 packet_reg_next = ram_packet_start->offset +
VC4_HDMI_PACKET_STRIDE * (packet_id + 1);
void __iomem *base = __vc4_hdmi_get_field_base(vc4_hdmi,
ram_packet_start->reg);
uint8_t buffer[VC4_HDMI_PACKET_STRIDE] = {};
unsigned long flags;
- ssize_t len, i;
+ ssize_t i;
int ret;
int idx;
if (!drm_dev_enter(drm, &idx))
- return;
+ return 0;
+
+ if (len > sizeof(buffer)) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ memcpy(buffer, infoframe, len);
WARN_ONCE(!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
VC4_HDMI_RAM_PACKET_ENABLE),
"Packet RAM has to be on to store the packet.");
- len = hdmi_infoframe_pack(frame, buffer, sizeof(buffer));
- if (len < 0)
- goto out;
-
- ret = vc4_hdmi_stop_packet(encoder, frame->any.type, true);
+ ret = vc4_hdmi_stop_packet(vc4_hdmi, type, true);
if (ret) {
DRM_ERROR("Failed to wait for infoframe to go idle: %d\n", ret);
goto out;
}
@@ -880,134 +736,11 @@ static void vc4_hdmi_write_infoframe(struct drm_encoder *encoder,
if (ret)
DRM_ERROR("Failed to wait for infoframe to start: %d\n", ret);
out:
drm_dev_exit(idx);
-}
-
-static void vc4_hdmi_avi_infoframe_colorspace(struct hdmi_avi_infoframe *frame,
- enum vc4_hdmi_output_format fmt)
-{
- switch (fmt) {
- case VC4_HDMI_OUTPUT_RGB:
- frame->colorspace = HDMI_COLORSPACE_RGB;
- break;
-
- case VC4_HDMI_OUTPUT_YUV420:
- frame->colorspace = HDMI_COLORSPACE_YUV420;
- break;
-
- case VC4_HDMI_OUTPUT_YUV422:
- frame->colorspace = HDMI_COLORSPACE_YUV422;
- break;
-
- case VC4_HDMI_OUTPUT_YUV444:
- frame->colorspace = HDMI_COLORSPACE_YUV444;
- break;
-
- default:
- break;
- }
-}
-
-static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
-{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_connector *connector = &vc4_hdmi->connector;
- struct drm_connector_state *cstate = connector->state;
- struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(cstate);
- const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
- union hdmi_infoframe frame;
- int ret;
-
- lockdep_assert_held(&vc4_hdmi->mutex);
-
- ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
- connector, mode);
- if (ret < 0) {
- DRM_ERROR("couldn't fill AVI infoframe\n");
- return;
- }
-
- drm_hdmi_avi_infoframe_quant_range(&frame.avi,
- connector, mode,
- vc4_hdmi_is_full_range(vc4_hdmi, vc4_state) ?
- HDMI_QUANTIZATION_RANGE_FULL :
- HDMI_QUANTIZATION_RANGE_LIMITED);
- drm_hdmi_avi_infoframe_colorimetry(&frame.avi, cstate);
- vc4_hdmi_avi_infoframe_colorspace(&frame.avi, vc4_state->output_format);
- drm_hdmi_avi_infoframe_bars(&frame.avi, cstate);
-
- vc4_hdmi_write_infoframe(encoder, &frame);
-}
-
-static void vc4_hdmi_set_spd_infoframe(struct drm_encoder *encoder)
-{
- union hdmi_infoframe frame;
- int ret;
-
- ret = hdmi_spd_infoframe_init(&frame.spd, "Broadcom", "Videocore");
- if (ret < 0) {
- DRM_ERROR("couldn't fill SPD infoframe\n");
- return;
- }
-
- frame.spd.sdi = HDMI_SPD_SDI_PC;
-
- vc4_hdmi_write_infoframe(encoder, &frame);
-}
-
-static void vc4_hdmi_set_audio_infoframe(struct drm_encoder *encoder)
-{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct hdmi_audio_infoframe *audio = &vc4_hdmi->audio.infoframe;
- union hdmi_infoframe frame;
-
- memcpy(&frame.audio, audio, sizeof(*audio));
-
- if (vc4_hdmi->packet_ram_enabled)
- vc4_hdmi_write_infoframe(encoder, &frame);
-}
-
-static void vc4_hdmi_set_hdr_infoframe(struct drm_encoder *encoder)
-{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_connector *connector = &vc4_hdmi->connector;
- struct drm_connector_state *conn_state = connector->state;
- union hdmi_infoframe frame;
-
- lockdep_assert_held(&vc4_hdmi->mutex);
-
- if (!vc4_hdmi->variant->supports_hdr)
- return;
-
- if (!conn_state->hdr_output_metadata)
- return;
-
- if (drm_hdmi_infoframe_set_hdr_metadata(&frame.drm, conn_state))
- return;
-
- vc4_hdmi_write_infoframe(encoder, &frame);
-}
-
-static void vc4_hdmi_set_infoframes(struct drm_encoder *encoder)
-{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
-
- lockdep_assert_held(&vc4_hdmi->mutex);
-
- vc4_hdmi_set_avi_infoframe(encoder);
- vc4_hdmi_set_spd_infoframe(encoder);
- /*
- * If audio was streaming, then we need to reenabled the audio
- * infoframe here during encoder_enable.
- */
- if (vc4_hdmi->audio.streaming)
- vc4_hdmi_set_audio_infoframe(encoder);
-
- vc4_hdmi_set_hdr_infoframe(encoder);
+ return ret;
}
#define SCRAMBLING_POLLING_DELAY_MS 1000
static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
@@ -1172,12 +905,10 @@ static void vc4_hdmi_encoder_post_crtc_powerdown(struct drm_encoder *encoder,
static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
struct drm_connector_state *state,
const struct drm_display_mode *mode)
{
- struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(state);
struct drm_device *drm = vc4_hdmi->connector.dev;
unsigned long flags;
u32 csc_ctl;
int idx;
@@ -1187,11 +918,11 @@ static void vc4_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
VC4_HD_CSC_CTL_ORDER);
- if (!vc4_hdmi_is_full_range(vc4_hdmi, vc4_state)) {
+ if (state->hdmi.is_limited_range) {
/* CEA VICs other than #1 requre limited range RGB
* output unless overridden by an AVI infoframe.
* Apply a colorspace conversion to squash 0-255 down
* to 16-235. The matrix here is:
*
@@ -1410,13 +1141,11 @@ static const u16
static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
struct drm_connector_state *state,
const struct drm_display_mode *mode)
{
struct drm_device *drm = vc4_hdmi->connector.dev;
- struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(state);
- unsigned int lim_range = vc4_hdmi_is_full_range(vc4_hdmi, vc4_state) ? 0 : 1;
+ unsigned int lim_range = state->hdmi.is_limited_range ? 1 : 0;
unsigned long flags;
const u16 (*csc)[4];
u32 if_cfg = 0;
u32 if_xbar = 0x543210;
u32 csc_chan_ctl = 0;
@@ -1427,18 +1156,18 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
if (!drm_dev_enter(drm, &idx))
return;
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
- switch (vc4_state->output_format) {
- case VC4_HDMI_OUTPUT_YUV444:
+ switch (state->hdmi.output_format) {
+ case HDMI_COLORSPACE_YUV444:
csc = vc5_hdmi_find_yuv_csc_coeffs(vc4_hdmi, state->colorspace, !!lim_range);
vc5_hdmi_set_csc_coeffs_swap(vc4_hdmi, csc);
break;
- case VC4_HDMI_OUTPUT_YUV422:
+ case HDMI_COLORSPACE_YUV422:
csc = vc5_hdmi_find_yuv_csc_coeffs(vc4_hdmi, state->colorspace, !!lim_range);
csc_ctl |= VC4_SET_FIELD(VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422_STANDARD,
VC5_MT_CP_CSC_CTL_FILTER_MODE_444_TO_422) |
VC5_MT_CP_CSC_CTL_USE_444_TO_422 |
@@ -1451,11 +1180,11 @@ static void vc5_hdmi_csc_setup(struct vc4_hdmi *vc4_hdmi,
VC5_DVP_HT_VEC_INTERFACE_CFG_SEL_422);
vc5_hdmi_set_csc_coeffs(vc4_hdmi, csc);
break;
- case VC4_HDMI_OUTPUT_RGB:
+ case HDMI_COLORSPACE_RGB:
if_xbar = 0x354021;
vc5_hdmi_set_csc_coeffs(vc4_hdmi, vc5_hdmi_csc_full_rgb_to_rgb[lim_range]);
break;
@@ -1540,12 +1269,10 @@ static void vc4_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
struct drm_connector_state *state,
const struct drm_display_mode *mode)
{
struct drm_device *drm = vc4_hdmi->connector.dev;
- const struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(state);
bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
bool interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
u32 pixel_rep = (mode->flags & DRM_MODE_FLAG_DBLCLK) ? 2 : 1;
u32 verta = (VC4_SET_FIELD(mode->crtc_vsync_end - mode->crtc_vsync_start,
@@ -1593,11 +1320,11 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
HDMI_WRITE(HDMI_VERTA1, verta);
HDMI_WRITE(HDMI_VERTB0, vertb_even);
HDMI_WRITE(HDMI_VERTB1, vertb);
- switch (vc4_state->output_bpc) {
+ switch (state->hdmi.output_bpc) {
case 12:
gcp = 6;
break;
case 10:
gcp = 5;
@@ -1610,11 +1337,11 @@ static void vc5_hdmi_set_timings(struct vc4_hdmi *vc4_hdmi,
/*
* YCC422 is always 36-bit and not considered deep colour so
* doesn't signal in GCP.
*/
- if (vc4_state->output_format == VC4_HDMI_OUTPUT_YUV422) {
+ if (state->hdmi.output_format == HDMI_COLORSPACE_YUV422) {
gcp = 0;
}
reg = HDMI_READ(HDMI_DEEP_COLOR_CONFIG_1);
reg &= ~(VC5_HDMI_DEEP_COLOR_CONFIG_1_INIT_PACK_PHASE_MASK |
@@ -1694,14 +1421,12 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
struct drm_device *drm = vc4_hdmi->connector.dev;
struct drm_connector *connector = &vc4_hdmi->connector;
struct drm_connector_state *conn_state =
drm_atomic_get_new_connector_state(state, connector);
- struct vc4_hdmi_connector_state *vc4_conn_state =
- conn_state_to_vc4_hdmi_conn_state(conn_state);
const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
- unsigned long tmds_char_rate = vc4_conn_state->tmds_char_rate;
+ unsigned long long tmds_char_rate = conn_state->hdmi.tmds_char_rate;
unsigned long bvb_rate, hsm_rate;
unsigned long flags;
int ret;
int idx;
@@ -1732,11 +1457,11 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
* Additionally, the AXI clock needs to be at least 25% of
* pixel clock, but HSM ends up being the limiting factor.
*/
hsm_rate = max_t(unsigned long,
HSM_MIN_CLOCK_FREQ,
- (tmds_char_rate / 100) * 101);
+ div_u64(tmds_char_rate, 100) * 101);
ret = clk_set_min_rate(vc4_hdmi->hsm_clock, hsm_rate);
if (ret) {
DRM_ERROR("Failed to set HSM clock rate: %d\n", ret);
goto err_put_runtime_pm;
}
@@ -1774,11 +1499,11 @@ static void vc4_hdmi_encoder_pre_crtc_configure(struct drm_encoder *encoder,
DRM_ERROR("Failed to turn on pixel bvb clock: %d\n", ret);
goto err_disable_pixel_clock;
}
if (vc4_hdmi->variant->phy_init)
- vc4_hdmi->variant->phy_init(vc4_hdmi, vc4_conn_state);
+ vc4_hdmi->variant->phy_init(vc4_hdmi, conn_state);
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
HDMI_WRITE(HDMI_SCHEDULER_CONTROL,
HDMI_READ(HDMI_SCHEDULER_CONTROL) |
@@ -1839,11 +1564,12 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder,
static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_device *drm = vc4_hdmi->connector.dev;
+ struct drm_connector *connector = &vc4_hdmi->connector;
+ struct drm_device *drm = connector->dev;
const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
struct drm_display_info *display = &vc4_hdmi->connector.display_info;
bool hsync_pos = mode->flags & DRM_MODE_FLAG_PHSYNC;
bool vsync_pos = mode->flags & DRM_MODE_FLAG_PVSYNC;
unsigned long flags;
@@ -1905,11 +1631,11 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
VC4_HDMI_RAM_PACKET_ENABLE);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
vc4_hdmi->packet_ram_enabled = true;
- vc4_hdmi_set_infoframes(encoder);
+ drm_atomic_helper_connector_hdmi_update_infoframes(connector, state);
}
vc4_hdmi_recenter_fifo(vc4_hdmi);
vc4_hdmi_enable_scrambling(encoder);
@@ -1922,112 +1648,25 @@ static void vc4_hdmi_encoder_post_crtc_enable(struct drm_encoder *encoder,
static void vc4_hdmi_encoder_atomic_mode_set(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct vc4_hdmi_connector_state *vc4_state =
- conn_state_to_vc4_hdmi_conn_state(conn_state);
mutex_lock(&vc4_hdmi->mutex);
drm_mode_copy(&vc4_hdmi->saved_adjusted_mode,
&crtc_state->adjusted_mode);
- vc4_hdmi->output_bpc = vc4_state->output_bpc;
- vc4_hdmi->output_format = vc4_state->output_format;
+ vc4_hdmi->output_bpc = conn_state->hdmi.output_bpc;
+ vc4_hdmi->output_format = conn_state->hdmi.output_format;
mutex_unlock(&vc4_hdmi->mutex);
}
-static bool
-vc4_hdmi_sink_supports_format_bpc(const struct vc4_hdmi *vc4_hdmi,
- const struct drm_display_info *info,
- const struct drm_display_mode *mode,
- unsigned int format, unsigned int bpc)
-{
- struct drm_device *dev = vc4_hdmi->connector.dev;
- u8 vic = drm_match_cea_mode(mode);
-
- if (vic == 1 && bpc != 8) {
- drm_dbg(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
- return false;
- }
-
- if (!info->is_hdmi &&
- (format != VC4_HDMI_OUTPUT_RGB || bpc != 8)) {
- drm_dbg(dev, "DVI Monitors require an RGB output at 8 bpc\n");
- return false;
- }
-
- switch (format) {
- case VC4_HDMI_OUTPUT_RGB:
- drm_dbg(dev, "RGB Format, checking the constraints.\n");
-
- if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))
- return false;
-
- if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
- drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
- return false;
- }
-
- if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
- drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
- return false;
- }
-
- drm_dbg(dev, "RGB format supported in that configuration.\n");
-
- return true;
-
- case VC4_HDMI_OUTPUT_YUV422:
- drm_dbg(dev, "YUV422 format, checking the constraints.\n");
-
- if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
- drm_dbg(dev, "Sink doesn't support YUV422.\n");
- return false;
- }
-
- if (bpc != 12) {
- drm_dbg(dev, "YUV422 only supports 12 bpc.\n");
- return false;
- }
-
- drm_dbg(dev, "YUV422 format supported in that configuration.\n");
-
- return true;
-
- case VC4_HDMI_OUTPUT_YUV444:
- drm_dbg(dev, "YUV444 format, checking the constraints.\n");
-
- if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) {
- drm_dbg(dev, "Sink doesn't support YUV444.\n");
- return false;
- }
-
- if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) {
- drm_dbg(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
- return false;
- }
-
- if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) {
- drm_dbg(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
- return false;
- }
-
- drm_dbg(dev, "YUV444 format supported in that configuration.\n");
-
- return true;
- }
-
- return false;
-}
-
static enum drm_mode_status
-vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
- const struct drm_display_mode *mode,
- unsigned long long clock)
+vc4_hdmi_connector_clock_valid(const struct drm_connector *connector,
+ const struct drm_display_mode *mode,
+ unsigned long long clock)
{
- const struct drm_connector *connector = &vc4_hdmi->connector;
- const struct drm_display_info *info = &connector->display_info;
+ const struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
struct vc4_dev *vc4 = to_vc4_dev(connector->dev);
if (clock > vc4_hdmi->variant->max_pixel_clock)
return MODE_CLOCK_HIGH;
@@ -2038,148 +1677,29 @@ vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi,
if (!vc4->hvs->vc5_hdmi_enable_4096by2160 &&
mode->hdisplay > 3840 && mode->vdisplay >= 2160 &&
drm_mode_vrefresh(mode) >= 50)
return MODE_CLOCK_HIGH;
- if (info->max_tmds_clock && clock > (info->max_tmds_clock * 1000))
- return MODE_CLOCK_HIGH;
-
return MODE_OK;
}
-static unsigned long long
-vc4_hdmi_encoder_compute_mode_clock(const struct drm_display_mode *mode,
- unsigned int bpc,
- enum vc4_hdmi_output_format fmt)
-{
- unsigned long long clock = mode->clock * 1000ULL;
-
- if (mode->flags & DRM_MODE_FLAG_DBLCLK)
- clock = clock * 2;
-
- if (fmt == VC4_HDMI_OUTPUT_YUV422)
- bpc = 8;
-
- clock = clock * bpc;
- do_div(clock, 8);
-
- return clock;
-}
-
-static int
-vc4_hdmi_encoder_compute_clock(const struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_state,
- const struct drm_display_mode *mode,
- unsigned int bpc, unsigned int fmt)
-{
- unsigned long long clock;
-
- clock = vc4_hdmi_encoder_compute_mode_clock(mode, bpc, fmt);
- if (vc4_hdmi_encoder_clock_valid(vc4_hdmi, mode, clock) != MODE_OK)
- return -EINVAL;
-
- vc4_state->tmds_char_rate = clock;
-
- return 0;
-}
-
-static int
-vc4_hdmi_encoder_compute_format(const struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_state,
- const struct drm_display_mode *mode,
- unsigned int bpc)
-{
- struct drm_device *dev = vc4_hdmi->connector.dev;
- const struct drm_connector *connector = &vc4_hdmi->connector;
- const struct drm_display_info *info = &connector->display_info;
- unsigned int format;
-
- drm_dbg(dev, "Trying with an RGB output\n");
-
- format = VC4_HDMI_OUTPUT_RGB;
- if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
- int ret;
-
- ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
- mode, bpc, format);
- if (!ret) {
- vc4_state->output_format = format;
- return 0;
- }
- }
-
- drm_dbg(dev, "Failed, Trying with an YUV422 output\n");
-
- format = VC4_HDMI_OUTPUT_YUV422;
- if (vc4_hdmi_sink_supports_format_bpc(vc4_hdmi, info, mode, format, bpc)) {
- int ret;
-
- ret = vc4_hdmi_encoder_compute_clock(vc4_hdmi, vc4_state,
- mode, bpc, format);
- if (!ret) {
- vc4_state->output_format = format;
- return 0;
- }
- }
-
- drm_dbg(dev, "Failed. No Format Supported for that bpc count.\n");
-
- return -EINVAL;
-}
-
-static int
-vc4_hdmi_encoder_compute_config(const struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_state,
- const struct drm_display_mode *mode)
-{
- struct drm_device *dev = vc4_hdmi->connector.dev;
- struct drm_connector_state *conn_state = &vc4_state->base;
- unsigned int max_bpc = clamp_t(unsigned int, conn_state->max_bpc, 8, 12);
- unsigned int bpc;
- int ret;
-
- for (bpc = max_bpc; bpc >= 8; bpc -= 2) {
- drm_dbg(dev, "Trying with a %d bpc output\n", bpc);
-
- ret = vc4_hdmi_encoder_compute_format(vc4_hdmi, vc4_state,
- mode, bpc);
- if (ret)
- continue;
-
- vc4_state->output_bpc = bpc;
-
- drm_dbg(dev,
- "Mode %ux%u @ %uHz: Found configuration: bpc: %u, fmt: %s, clock: %llu\n",
- mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
- vc4_state->output_bpc,
- vc4_hdmi_output_fmt_str(vc4_state->output_format),
- vc4_state->tmds_char_rate);
-
- break;
- }
-
- return ret;
-}
+static const struct drm_connector_hdmi_funcs vc4_hdmi_hdmi_connector_funcs = {
+ .tmds_char_rate_valid = vc4_hdmi_connector_clock_valid,
+ .write_infoframe = vc4_hdmi_write_infoframe,
+};
#define WIFI_2_4GHz_CH1_MIN_FREQ 2400000000ULL
#define WIFI_2_4GHz_CH1_MAX_FREQ 2422000000ULL
static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_connector *connector = &vc4_hdmi->connector;
- struct drm_connector_state *old_conn_state =
- drm_atomic_get_old_connector_state(conn_state->state, connector);
- struct vc4_hdmi_connector_state *old_vc4_state =
- conn_state_to_vc4_hdmi_conn_state(old_conn_state);
- struct vc4_hdmi_connector_state *vc4_state = conn_state_to_vc4_hdmi_conn_state(conn_state);
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
unsigned long long tmds_char_rate = mode->clock * 1000;
unsigned long long tmds_bit_rate;
- int ret;
if (vc4_hdmi->variant->unsupported_odd_h_timings) {
if (mode->flags & DRM_MODE_FLAG_DBLCLK) {
/* Only try to fixup DBLCLK modes to get 480i and 576i
* working.
@@ -2211,35 +1731,28 @@ static int vc4_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
tmds_bit_rate <= WIFI_2_4GHz_CH1_MAX_FREQ)) {
mode->clock = 238560;
tmds_char_rate = mode->clock * 1000;
}
- ret = vc4_hdmi_encoder_compute_config(vc4_hdmi, vc4_state, mode);
- if (ret)
- return ret;
-
- /* vc4_hdmi_encoder_compute_config may have changed output_bpc and/or output_format */
- if (vc4_state->output_bpc != old_vc4_state->output_bpc ||
- vc4_state->output_format != old_vc4_state->output_format)
- crtc_state->mode_changed = true;
-
return 0;
}
static enum drm_mode_status
vc4_hdmi_encoder_mode_valid(struct drm_encoder *encoder,
const struct drm_display_mode *mode)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
+ unsigned long long rate;
if (vc4_hdmi->variant->unsupported_odd_h_timings &&
!(mode->flags & DRM_MODE_FLAG_DBLCLK) &&
((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
(mode->hsync_end % 2) || (mode->htotal % 2)))
return MODE_H_ILLEGAL;
- return vc4_hdmi_encoder_clock_valid(vc4_hdmi, mode, mode->clock * 1000);
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
+ return vc4_hdmi_connector_clock_valid(&vc4_hdmi->connector, mode, rate);
}
static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {
.atomic_check = vc4_hdmi_encoder_atomic_check,
.atomic_mode_set = vc4_hdmi_encoder_atomic_mode_set,
@@ -2427,19 +1940,18 @@ static int vc4_hdmi_audio_startup(struct device *dev, void *data)
return ret;
}
static void vc4_hdmi_audio_reset(struct vc4_hdmi *vc4_hdmi)
{
- struct drm_encoder *encoder = &vc4_hdmi->encoder.base;
struct device *dev = &vc4_hdmi->pdev->dev;
unsigned long flags;
int ret;
lockdep_assert_held(&vc4_hdmi->mutex);
vc4_hdmi->audio.streaming = false;
- ret = vc4_hdmi_stop_packet(encoder, HDMI_INFOFRAME_TYPE_AUDIO, false);
+ ret = vc4_hdmi_stop_packet(vc4_hdmi, HDMI_INFOFRAME_TYPE_AUDIO, false);
if (ret)
dev_err(dev, "Failed to stop audio infoframe: %d\n", ret);
spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
@@ -2526,11 +2038,11 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data,
struct hdmi_codec_daifmt *daifmt,
struct hdmi_codec_params *params)
{
struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev);
struct drm_device *drm = vc4_hdmi->connector.dev;
- struct drm_encoder *encoder = &vc4_hdmi->encoder.base;
+ struct drm_connector *connector = &vc4_hdmi->connector;
unsigned int sample_rate = params->sample_rate;
unsigned int channels = params->channels;
unsigned long flags;
u32 audio_packet_config, channel_mask;
u32 channel_map;
@@ -2603,12 +2115,14 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data,
vc4_hdmi_set_n_cts(vc4_hdmi, sample_rate);
spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
- memcpy(&vc4_hdmi->audio.infoframe, ¶ms->cea, sizeof(params->cea));
- vc4_hdmi_set_audio_infoframe(encoder);
+ ret = drm_atomic_helper_connector_hdmi_update_audio_infoframe(connector,
+ ¶ms->cea);
+ if (ret)
+ goto out_dev_exit;
out_dev_exit:
drm_dev_exit(idx);
out:
mutex_unlock(&vc4_hdmi->mutex);
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 934d5d61485a..b37f1d2c3fe5 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -8,11 +8,10 @@
#include "vc4_drv.h"
struct vc4_hdmi;
struct vc4_hdmi_register;
-struct vc4_hdmi_connector_state;
enum vc4_hdmi_phy_channel {
PHY_LANE_0 = 0,
PHY_LANE_1,
PHY_LANE_2,
@@ -74,11 +73,11 @@ struct vc4_hdmi_variant {
struct drm_connector_state *state,
const struct drm_display_mode *mode);
/* Callback to initialize the PHY according to the connector state */
void (*phy_init)(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_conn_state);
+ struct drm_connector_state *conn_state);
/* Callback to disable the PHY */
void (*phy_disable)(struct vc4_hdmi *vc4_hdmi);
/* Callback to enable the RNG in the PHY */
@@ -108,23 +107,10 @@ struct vc4_hdmi_audio {
struct hdmi_audio_infoframe infoframe;
struct platform_device *codec_pdev;
bool streaming;
};
-enum vc4_hdmi_output_format {
- VC4_HDMI_OUTPUT_RGB,
- VC4_HDMI_OUTPUT_YUV422,
- VC4_HDMI_OUTPUT_YUV444,
- VC4_HDMI_OUTPUT_YUV420,
-};
-
-enum vc4_hdmi_broadcast_rgb {
- VC4_HDMI_BROADCAST_RGB_AUTO,
- VC4_HDMI_BROADCAST_RGB_FULL,
- VC4_HDMI_BROADCAST_RGB_LIMITED,
-};
-
/* General HDMI hardware state. */
struct vc4_hdmi {
struct vc4_hdmi_audio audio;
struct platform_device *pdev;
@@ -133,12 +119,10 @@ struct vc4_hdmi {
struct vc4_encoder encoder;
struct drm_connector connector;
struct delayed_work scrambling_work;
- struct drm_property *broadcast_rgb_property;
-
struct i2c_adapter *ddc;
void __iomem *hdmicore_regs;
void __iomem *hd_regs;
/* VC5 Only */
@@ -216,20 +200,21 @@ struct vc4_hdmi {
* the scrambler on? Protected by @mutex.
*/
bool scdc_enabled;
/**
- * @output_bpc: Copy of @vc4_connector_state.output_bpc for use
- * outside of KMS hooks. Protected by @mutex.
+ * @output_bpc: Copy of @drm_connector_state.hdmi.output_bpc for
+ * use outside of KMS hooks. Protected by @mutex.
*/
unsigned int output_bpc;
/**
- * @output_format: Copy of @vc4_connector_state.output_format
- * for use outside of KMS hooks. Protected by @mutex.
+ * @output_format: Copy of
+ * @drm_connector_state.hdmi.output_format for use outside of
+ * KMS hooks. Protected by @mutex.
*/
- enum vc4_hdmi_output_format output_format;
+ enum hdmi_colorspace output_format;
};
#define connector_to_vc4_hdmi(_connector) \
container_of_const(_connector, struct vc4_hdmi, connector)
@@ -238,29 +223,18 @@ encoder_to_vc4_hdmi(struct drm_encoder *encoder)
{
struct vc4_encoder *_encoder = to_vc4_encoder(encoder);
return container_of_const(_encoder, struct vc4_hdmi, encoder);
}
-struct vc4_hdmi_connector_state {
- struct drm_connector_state base;
- unsigned long long tmds_char_rate;
- unsigned int output_bpc;
- enum vc4_hdmi_output_format output_format;
- enum vc4_hdmi_broadcast_rgb broadcast_rgb;
-};
-
-#define conn_state_to_vc4_hdmi_conn_state(_state) \
- container_of_const(_state, struct vc4_hdmi_connector_state, base)
-
void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_conn_state);
+ struct drm_connector_state *conn_state);
void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *vc4_conn_state);
+ struct drm_connector_state *conn_state);
void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi);
void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi);
void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi);
#endif /* _VC4_HDMI_H_ */
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi_phy.c b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
index ec24999bf96d..1f5507fc7a03 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi_phy.c
@@ -126,11 +126,11 @@
#define VC4_HDMI_RM_FORMAT_SHIFT_MASK VC4_MASK(25, 24)
#define OSCILLATOR_FREQUENCY 54000000
void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *conn_state)
+ struct drm_connector_state *conn_state)
{
unsigned long flags;
/* PHY should be in reset, like
* vc4_hdmi_encoder_disable() does.
@@ -359,15 +359,15 @@ static void vc5_hdmi_reset_phy(struct vc4_hdmi *vc4_hdmi)
HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0x0f);
HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL, BIT(10));
}
void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
- struct vc4_hdmi_connector_state *conn_state)
+ struct drm_connector_state *conn_state)
{
const struct phy_lane_settings *chan0_settings, *chan1_settings, *chan2_settings, *clock_settings;
const struct vc4_hdmi_variant *variant = vc4_hdmi->variant;
- unsigned long long pixel_freq = conn_state->tmds_char_rate;
+ unsigned long long pixel_freq = conn_state->hdmi.tmds_char_rate;
unsigned long long vco_freq;
unsigned char word_sel;
unsigned long flags;
u8 vco_sel, vco_div;
--
2.45.0
The new HDMI connector infrastructure allows to remove some boilerplate,
especially to generate infoframes. Let's switch to it.
Reviewed-by: Jernej Skrabec <[email protected]>
Acked-by: Sui Jingfeng <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/sun4i/Kconfig | 3 ++
drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 81 +++++++++++++++++++++-------------
2 files changed, 54 insertions(+), 30 deletions(-)
diff --git a/drivers/gpu/drm/sun4i/Kconfig b/drivers/gpu/drm/sun4i/Kconfig
index 4741d9f6544c..4037e085430e 100644
--- a/drivers/gpu/drm/sun4i/Kconfig
+++ b/drivers/gpu/drm/sun4i/Kconfig
@@ -16,10 +16,13 @@ config DRM_SUN4I
if DRM_SUN4I
config DRM_SUN4I_HDMI
tristate "Allwinner A10/A10s/A20/A31 HDMI Controller Support"
depends on ARM || COMPILE_TEST
+ select DRM_DISPLAY_HDMI_HELPER
+ select DRM_DISPLAY_HDMI_STATE_HELPER
+ select DRM_DISPLAY_HELPER
default DRM_SUN4I
help
Choose this option if you have an Allwinner A10/A10s/A20/A31
SoC with an HDMI controller.
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
index 1c6cda2bfb14..0e652dd480c9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
@@ -38,34 +38,28 @@
container_of_const(e, struct sun4i_hdmi, encoder)
#define drm_connector_to_sun4i_hdmi(c) \
container_of_const(c, struct sun4i_hdmi, connector)
-static int sun4i_hdmi_setup_avi_infoframes(struct sun4i_hdmi *hdmi,
- struct drm_display_mode *mode)
+static int sun4i_hdmi_write_infoframe(struct drm_connector *connector,
+ enum hdmi_infoframe_type type,
+ const u8 *buffer, size_t len)
{
- struct hdmi_avi_infoframe frame;
- u8 buffer[17];
- int i, ret;
+ struct sun4i_hdmi *hdmi = drm_connector_to_sun4i_hdmi(connector);
+ int i;
- ret = drm_hdmi_avi_infoframe_from_display_mode(&frame,
- &hdmi->connector, mode);
- if (ret < 0) {
- DRM_ERROR("Failed to get infoframes from mode\n");
- return ret;
+ if (type != HDMI_INFOFRAME_TYPE_AVI) {
+ drm_err(connector->dev,
+ "Unsupported infoframe type: %u\n", type);
+ return 0;
}
- ret = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
- if (ret < 0) {
- DRM_ERROR("Failed to pack infoframes\n");
- return ret;
- }
-
- for (i = 0; i < sizeof(buffer); i++)
+ for (i = 0; i < len; i++)
writeb(buffer[i], hdmi->base + SUN4I_HDMI_AVI_INFOFRAME_REG(i));
return 0;
+
}
static void sun4i_hdmi_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
@@ -84,18 +78,22 @@ static void sun4i_hdmi_disable(struct drm_encoder *encoder,
static void sun4i_hdmi_enable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
struct sun4i_hdmi *hdmi = drm_encoder_to_sun4i_hdmi(encoder);
- struct drm_display_info *display = &hdmi->connector.display_info;
+ struct drm_connector *connector = &hdmi->connector;
+ struct drm_display_info *display = &connector->display_info;
+ struct drm_connector_state *conn_state =
+ drm_atomic_get_new_connector_state(state, connector);
+ unsigned long long tmds_rate = conn_state->hdmi.tmds_char_rate;
unsigned int x, y;
u32 val = 0;
DRM_DEBUG_DRIVER("Enabling the HDMI Output\n");
- clk_set_rate(hdmi->mod_clk, mode->crtc_clock * 1000);
- clk_set_rate(hdmi->tmds_clk, mode->crtc_clock * 1000);
+ clk_set_rate(hdmi->mod_clk, tmds_rate);
+ clk_set_rate(hdmi->tmds_clk, tmds_rate);
/* Set input sync enable */
writel(SUN4I_HDMI_UNKNOWN_INPUT_SYNC,
hdmi->base + SUN4I_HDMI_UNKNOWN_REG);
@@ -144,11 +142,12 @@ static void sun4i_hdmi_enable(struct drm_encoder *encoder,
writel(val, hdmi->base + SUN4I_HDMI_VID_TIMING_POL_REG);
clk_prepare_enable(hdmi->tmds_clk);
- sun4i_hdmi_setup_avi_infoframes(hdmi, mode);
+ drm_atomic_helper_connector_hdmi_update_infoframes(connector, state);
+
val |= SUN4I_HDMI_PKT_CTRL_TYPE(0, SUN4I_HDMI_PKT_AVI);
val |= SUN4I_HDMI_PKT_CTRL_TYPE(1, SUN4I_HDMI_PKT_END);
writel(val, hdmi->base + SUN4I_HDMI_PKT_CTRL_REG(0));
val = SUN4I_HDMI_VID_CTRL_ENABLE;
@@ -197,23 +196,26 @@ static int sun4i_hdmi_connector_atomic_check(struct drm_connector *connector,
struct drm_crtc_state *crtc_state = crtc->state;
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
enum drm_mode_status status;
status = sun4i_hdmi_connector_clock_valid(connector, mode,
- mode->clock * 1000);
+ conn_state->hdmi.tmds_char_rate);
if (status != MODE_OK)
return -EINVAL;
return 0;
}
static enum drm_mode_status
sun4i_hdmi_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
- return sun4i_hdmi_connector_clock_valid(connector, mode,
- mode->clock * 1000);
+ unsigned long long rate =
+ drm_connector_hdmi_compute_mode_clock(mode, 8,
+ HDMI_COLORSPACE_RGB);
+
+ return sun4i_hdmi_connector_clock_valid(connector, mode, rate);
}
static int sun4i_hdmi_get_modes(struct drm_connector *connector)
{
struct sun4i_hdmi *hdmi = drm_connector_to_sun4i_hdmi(connector);
@@ -259,10 +261,15 @@ static struct i2c_adapter *sun4i_hdmi_get_ddc(struct device *dev)
return ERR_PTR(-EPROBE_DEFER);
return ddc;
}
+static const struct drm_connector_hdmi_funcs sun4i_hdmi_hdmi_connector_funcs = {
+ .tmds_char_rate_valid = sun4i_hdmi_connector_clock_valid,
+ .write_infoframe = sun4i_hdmi_write_infoframe,
+};
+
static const struct drm_connector_helper_funcs sun4i_hdmi_connector_helper_funcs = {
.atomic_check = sun4i_hdmi_connector_atomic_check,
.mode_valid = sun4i_hdmi_connector_mode_valid,
.get_modes = sun4i_hdmi_get_modes,
};
@@ -280,15 +287,20 @@ sun4i_hdmi_connector_detect(struct drm_connector *connector, bool force)
}
return connector_status_connected;
}
+static void sun4i_hdmi_connector_reset(struct drm_connector *connector)
+{
+ drm_atomic_helper_connector_reset(connector);
+ __drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
+}
+
static const struct drm_connector_funcs sun4i_hdmi_connector_funcs = {
.detect = sun4i_hdmi_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = drm_connector_cleanup,
- .reset = drm_atomic_helper_connector_reset,
+ .reset = sun4i_hdmi_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
#ifdef CONFIG_DRM_SUN4I_HDMI_CEC
@@ -643,14 +655,23 @@ static int sun4i_hdmi_bind(struct device *dev, struct device *master,
hdmi->base + SUN4I_HDMI_CEC);
#endif
drm_connector_helper_add(&hdmi->connector,
&sun4i_hdmi_connector_helper_funcs);
- ret = drm_connector_init_with_ddc(drm, &hdmi->connector,
- &sun4i_hdmi_connector_funcs,
- DRM_MODE_CONNECTOR_HDMIA,
- hdmi->ddc_i2c);
+ ret = drmm_connector_hdmi_init(drm, &hdmi->connector,
+ /*
+ * NOTE: Those are likely to be
+ * wrong, but I couldn't find the
+ * actual ones in the BSP.
+ */
+ "AW", "HDMI",
+ &sun4i_hdmi_connector_funcs,
+ &sun4i_hdmi_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ hdmi->ddc_i2c,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
if (ret) {
dev_err(dev,
"Couldn't initialise the HDMI connector\n");
goto err_cleanup_connector;
}
--
2.45.0
The new HDMI connector infrastructure allows to remove some boilerplate,
especially to generate infoframes. Let's switch to it.
Reviewed-by: Heiko Stuebner <[email protected]>
Acked-by: Heiko Stuebner <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/rockchip/Kconfig | 3 +
drivers/gpu/drm/rockchip/inno_hdmi.c | 153 ++++++++++++---------------------
drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 3 +
3 files changed, 61 insertions(+), 98 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index 1bf3e2829cd0..7df875e38517 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -72,10 +72,13 @@ config ROCKCHIP_DW_MIPI_DSI
enable MIPI DSI on RK3288 or RK3399 based SoC, you should
select this option.
config ROCKCHIP_INNO_HDMI
bool "Rockchip specific extensions for Innosilicon HDMI"
+ select DRM_DISPLAY_HDMI_HELPER
+ select DRM_DISPLAY_HDMI_STATE_HELPER
+ select DRM_DISPLAY_HELPER
help
This selects support for Rockchip SoC specific extensions
for the Innosilicon HDMI driver. If you want to enable
HDMI on RK3036 based SoC, you should select this option.
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 3df2cfcf9998..5069403c3b80 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -20,10 +20,13 @@
#include <drm/drm_edid.h>
#include <drm/drm_of.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_hdmi_state_helper.h>
+
#include "rockchip_drm_drv.h"
#include "inno_hdmi.h"
#define INNO_HDMI_MIN_TMDS_CLOCK 25000000U
@@ -65,13 +68,11 @@ struct inno_hdmi {
const struct inno_hdmi_variant *variant;
};
struct inno_hdmi_connector_state {
struct drm_connector_state base;
- unsigned int enc_out_format;
unsigned int colorimetry;
- bool rgb_limited_range;
};
static struct inno_hdmi *encoder_to_inno_hdmi(struct drm_encoder *encoder)
{
struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder);
@@ -255,90 +256,53 @@ static void inno_hdmi_reset(struct inno_hdmi *hdmi)
hdmi_modb(hdmi, HDMI_SYS_CTRL, msk, val);
inno_hdmi_standby(hdmi);
}
-static void inno_hdmi_disable_frame(struct inno_hdmi *hdmi,
- enum hdmi_infoframe_type type)
+static int inno_hdmi_disable_frame(struct drm_connector *connector,
+ enum hdmi_infoframe_type type)
{
- struct drm_connector *connector = &hdmi->connector;
-
- if (type != HDMI_INFOFRAME_TYPE_AVI) {
- drm_err(connector->dev,
- "Unsupported infoframe type: %u\n", type);
- return;
- }
-
- hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, INFOFRAME_AVI);
-}
-
-static int inno_hdmi_upload_frame(struct inno_hdmi *hdmi,
- union hdmi_infoframe *frame, enum hdmi_infoframe_type type)
-{
- struct drm_connector *connector = &hdmi->connector;
- u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
- ssize_t rc, i;
+ struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
if (type != HDMI_INFOFRAME_TYPE_AVI) {
drm_err(connector->dev,
"Unsupported infoframe type: %u\n", type);
return 0;
}
- inno_hdmi_disable_frame(hdmi, type);
+ hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_BUF_INDEX, INFOFRAME_AVI);
- rc = hdmi_infoframe_pack(frame, packed_frame,
- sizeof(packed_frame));
- if (rc < 0)
- return rc;
+ return 0;
+}
- for (i = 0; i < rc; i++)
+static int inno_hdmi_upload_frame(struct drm_connector *connector,
+ enum hdmi_infoframe_type type,
+ const u8 *buffer, size_t len)
+{
+ struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
+ u8 packed_frame[HDMI_MAXIMUM_INFO_FRAME_SIZE];
+ ssize_t i;
+
+ if (type != HDMI_INFOFRAME_TYPE_AVI) {
+ drm_err(connector->dev,
+ "Unsupported infoframe type: %u\n", type);
+ return 0;
+ }
+
+ inno_hdmi_disable_frame(connector, type);
+
+ for (i = 0; i < len; i++)
hdmi_writeb(hdmi, HDMI_CONTROL_PACKET_ADDR + i,
packed_frame[i]);
return 0;
}
-static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
- struct drm_display_mode *mode)
-{
- struct drm_connector *connector = &hdmi->connector;
- struct drm_connector_state *conn_state = connector->state;
- struct inno_hdmi_connector_state *inno_conn_state =
- to_inno_hdmi_conn_state(conn_state);
- union hdmi_infoframe frame;
- int rc;
-
- rc = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
- &hdmi->connector,
- mode);
- if (rc) {
- inno_hdmi_disable_frame(hdmi, HDMI_INFOFRAME_TYPE_AVI);
- return rc;
- }
-
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444)
- frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
- else if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV422)
- frame.avi.colorspace = HDMI_COLORSPACE_YUV422;
- else
- frame.avi.colorspace = HDMI_COLORSPACE_RGB;
-
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) {
- drm_hdmi_avi_infoframe_quant_range(&frame.avi,
- connector, mode,
- inno_conn_state->rgb_limited_range ?
- HDMI_QUANTIZATION_RANGE_LIMITED :
- HDMI_QUANTIZATION_RANGE_FULL);
- } else {
- frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
- frame.avi.ycc_quantization_range =
- HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
- }
-
- return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AVI);
-}
+static const struct drm_connector_hdmi_funcs inno_hdmi_hdmi_connector_funcs = {
+ .clear_infoframe = inno_hdmi_disable_frame,
+ .write_infoframe = inno_hdmi_upload_frame,
+};
static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
{
struct drm_connector *connector = &hdmi->connector;
struct drm_connector_state *conn_state = connector->state;
@@ -359,12 +323,12 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) |
v_VIDEO_OUTPUT_COLOR(0) |
v_VIDEO_INPUT_CSP(0);
hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) {
- if (inno_conn_state->rgb_limited_range) {
+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_RGB) {
+ if (conn_state->hdmi.is_limited_range) {
csc_mode = CSC_RGB_0_255_TO_RGB_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = v_CSC_ENABLE;
@@ -378,18 +342,18 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
return 0;
}
} else {
if (inno_conn_state->colorimetry == HDMI_COLORIMETRY_ITU_601) {
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_YUV444) {
csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = v_CSC_ENABLE;
}
} else {
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_YUV444) {
csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = v_CSC_ENABLE;
}
@@ -460,14 +424,16 @@ static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
return 0;
}
static int inno_hdmi_setup(struct inno_hdmi *hdmi,
- struct drm_display_mode *mode)
+ struct drm_crtc_state *new_crtc_state,
+ struct drm_connector_state *new_conn_state)
{
- struct drm_display_info *display = &hdmi->connector.display_info;
- unsigned long mpixelclock = mode->clock * 1000;
+ struct drm_connector *connector = &hdmi->connector;
+ struct drm_display_info *display = &connector->display_info;
+ struct drm_display_mode *mode = &new_crtc_state->adjusted_mode;
/* Mute video and audio output */
hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
@@ -477,26 +443,26 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
inno_hdmi_config_video_timing(hdmi, mode);
inno_hdmi_config_video_csc(hdmi);
- if (display->is_hdmi)
- inno_hdmi_config_video_avi(hdmi, mode);
+ drm_atomic_helper_connector_hdmi_update_infoframes(connector,
+ new_conn_state->state);
/*
* When IP controller have configured to an accurate video
* timing, then the TMDS clock source would be switched to
* DCLK_LCDC, so we need to init the TMDS rate to mode pixel
* clock rate, and reconfigure the DDC clock.
*/
- inno_hdmi_i2c_init(hdmi, mpixelclock);
+ inno_hdmi_i2c_init(hdmi, new_conn_state->hdmi.tmds_char_rate);
/* Unmute video and audio output */
hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
v_AUDIO_MUTE(0) | v_VIDEO_MUTE(0));
- inno_hdmi_power_up(hdmi, mpixelclock);
+ inno_hdmi_power_up(hdmi, new_conn_state->hdmi.tmds_char_rate);
return 0;
}
static enum drm_mode_status inno_hdmi_display_mode_valid(struct inno_hdmi *hdmi,
@@ -544,11 +510,11 @@ static void inno_hdmi_encoder_enable(struct drm_encoder *encoder,
crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc);
if (WARN_ON(!crtc_state))
return;
- inno_hdmi_setup(hdmi, &crtc_state->adjusted_mode);
+ inno_hdmi_setup(hdmi, crtc_state, conn_state);
}
static void inno_hdmi_encoder_disable(struct drm_encoder *encoder,
struct drm_atomic_state *state)
{
@@ -561,11 +527,10 @@ static int
inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state);
- struct inno_hdmi *hdmi = encoder_to_inno_hdmi(encoder);
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
u8 vic = drm_match_cea_mode(mode);
struct inno_hdmi_connector_state *inno_conn_state =
to_inno_hdmi_conn_state(conn_state);
@@ -578,16 +543,11 @@ inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
vic == 17 || vic == 18)
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_601;
else
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
- inno_conn_state->enc_out_format = HDMI_COLORSPACE_RGB;
- inno_conn_state->rgb_limited_range =
- drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED;
-
- return inno_hdmi_display_mode_valid(hdmi,
- &crtc_state->adjusted_mode) == MODE_OK ? 0 : -EINVAL;
+ return 0;
}
static struct drm_encoder_helper_funcs inno_hdmi_encoder_helper_funcs = {
.atomic_check = inno_hdmi_encoder_atomic_check,
.atomic_enable = inno_hdmi_encoder_enable,
@@ -627,16 +587,10 @@ inno_hdmi_connector_mode_valid(struct drm_connector *connector,
struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
return inno_hdmi_display_mode_valid(hdmi, mode);
}
-static void inno_hdmi_connector_destroy(struct drm_connector *connector)
-{
- drm_connector_unregister(connector);
- drm_connector_cleanup(connector);
-}
-
static void
inno_hdmi_connector_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state)
{
struct inno_hdmi_connector_state *inno_conn_state =
@@ -658,14 +612,13 @@ static void inno_hdmi_connector_reset(struct drm_connector *connector)
inno_conn_state = kzalloc(sizeof(*inno_conn_state), GFP_KERNEL);
if (!inno_conn_state)
return;
__drm_atomic_helper_connector_reset(connector, &inno_conn_state->base);
+ __drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
- inno_conn_state->enc_out_format = HDMI_COLORSPACE_RGB;
- inno_conn_state->rgb_limited_range = false;
}
static struct drm_connector_state *
inno_hdmi_connector_duplicate_state(struct drm_connector *connector)
{
@@ -687,17 +640,17 @@ inno_hdmi_connector_duplicate_state(struct drm_connector *connector)
}
static const struct drm_connector_funcs inno_hdmi_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = inno_hdmi_connector_detect,
- .destroy = inno_hdmi_connector_destroy,
.reset = inno_hdmi_connector_reset,
.atomic_duplicate_state = inno_hdmi_connector_duplicate_state,
.atomic_destroy_state = inno_hdmi_connector_destroy_state,
};
static struct drm_connector_helper_funcs inno_hdmi_connector_helper_funcs = {
+ .atomic_check = drm_atomic_helper_connector_hdmi_check,
.get_modes = inno_hdmi_connector_get_modes,
.mode_valid = inno_hdmi_connector_mode_valid,
};
static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
@@ -721,14 +674,18 @@ static int inno_hdmi_register(struct drm_device *drm, struct inno_hdmi *hdmi)
hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
drm_connector_helper_add(&hdmi->connector,
&inno_hdmi_connector_helper_funcs);
- drm_connector_init_with_ddc(drm, &hdmi->connector,
- &inno_hdmi_connector_funcs,
- DRM_MODE_CONNECTOR_HDMIA,
- hdmi->ddc);
+ drmm_connector_hdmi_init(drm, &hdmi->connector,
+ "Rockchip", "Inno HDMI",
+ &inno_hdmi_connector_funcs,
+ &inno_hdmi_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ hdmi->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
drm_connector_attach_encoder(&hdmi->connector, encoder);
return 0;
}
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
index 245b34adca5a..1c6cda2bfb14 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
@@ -24,10 +24,13 @@
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
+#include <drm/display/drm_hdmi_helper.h>
+#include <drm/display/drm_hdmi_state_helper.h>
+
#include "sun4i_backend.h"
#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sun4i_hdmi.h"
--
2.45.0
Infoframes in KMS is usually handled by a bunch of low-level helpers
that require quite some boilerplate for drivers. This leads to
discrepancies with how drivers generate them, and which are actually
sent.
Now that we have everything needed to generate them in the HDMI
connector state, we can generate them in our common logic so that
drivers can simply reuse what we precomputed.
Cc: Ville Syrjälä <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 336 +++++++++++++++++++++
drivers/gpu/drm/drm_connector.c | 14 +
drivers/gpu/drm/tests/drm_connector_test.c | 12 +
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 1 +
include/drm/display/drm_hdmi_state_helper.h | 7 +
include/drm/drm_connector.h | 111 ++++++-
6 files changed, 480 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index c3a10f9f7ecd..8e90a849ee50 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -313,10 +313,148 @@ hdmi_compute_config(const struct drm_connector *connector,
}
return -EINVAL;
}
+static int hdmi_generate_avi_infoframe(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ const struct drm_display_mode *mode =
+ connector_state_get_mode(conn_state);
+ struct drm_connector_hdmi_infoframe *infoframe =
+ &conn_state->hdmi.infoframes.avi;
+ struct hdmi_avi_infoframe *frame =
+ &infoframe->data.avi;
+ bool is_limited_range = conn_state->hdmi.is_limited_range;
+ enum hdmi_quantization_range rgb_quant_range =
+ is_limited_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL;
+ int ret;
+
+ ret = drm_hdmi_avi_infoframe_from_display_mode(frame, connector, mode);
+ if (ret)
+ return ret;
+
+ frame->colorspace = conn_state->hdmi.output_format;
+
+ /*
+ * FIXME: drm_hdmi_avi_infoframe_quant_range() doesn't handle
+ * YUV formats at all at the moment, so if we ever support YUV
+ * formats this needs to be revised.
+ */
+ drm_hdmi_avi_infoframe_quant_range(frame, connector, mode, rgb_quant_range);
+ drm_hdmi_avi_infoframe_colorimetry(frame, conn_state);
+ drm_hdmi_avi_infoframe_bars(frame, conn_state);
+
+ infoframe->set = true;
+
+ return 0;
+}
+
+static int hdmi_generate_spd_infoframe(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ struct drm_connector_hdmi_infoframe *infoframe =
+ &conn_state->hdmi.infoframes.spd;
+ struct hdmi_spd_infoframe *frame =
+ &infoframe->data.spd;
+ int ret;
+
+ ret = hdmi_spd_infoframe_init(frame,
+ connector->hdmi.vendor,
+ connector->hdmi.product);
+ if (ret)
+ return ret;
+
+ frame->sdi = HDMI_SPD_SDI_PC;
+
+ infoframe->set = true;
+
+ return 0;
+}
+
+static int hdmi_generate_hdr_infoframe(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ struct drm_connector_hdmi_infoframe *infoframe =
+ &conn_state->hdmi.infoframes.hdr_drm;
+ struct hdmi_drm_infoframe *frame =
+ &infoframe->data.drm;
+ int ret;
+
+ if (connector->max_bpc < 10)
+ return 0;
+
+ if (!conn_state->hdr_output_metadata)
+ return 0;
+
+ ret = drm_hdmi_infoframe_set_hdr_metadata(frame, conn_state);
+ if (ret)
+ return ret;
+
+ infoframe->set = true;
+
+ return 0;
+}
+
+static int hdmi_generate_hdmi_vendor_infoframe(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ const struct drm_display_info *info = &connector->display_info;
+ const struct drm_display_mode *mode =
+ connector_state_get_mode(conn_state);
+ struct drm_connector_hdmi_infoframe *infoframe =
+ &conn_state->hdmi.infoframes.hdmi;
+ struct hdmi_vendor_infoframe *frame =
+ &infoframe->data.vendor.hdmi;
+ int ret;
+
+ if (!info->has_hdmi_infoframe)
+ return 0;
+
+ ret = drm_hdmi_vendor_infoframe_from_display_mode(frame, connector, mode);
+ if (ret)
+ return ret;
+
+ infoframe->set = true;
+
+ return 0;
+}
+
+static int
+hdmi_generate_infoframes(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state)
+{
+ const struct drm_display_info *info = &connector->display_info;
+ int ret;
+
+ if (!info->is_hdmi)
+ return 0;
+
+ ret = hdmi_generate_avi_infoframe(connector, conn_state);
+ if (ret)
+ return ret;
+
+ ret = hdmi_generate_spd_infoframe(connector, conn_state);
+ if (ret)
+ return ret;
+
+ /*
+ * Audio Infoframes will be generated by ALSA, and updated by
+ * drm_atomic_helper_connector_hdmi_update_audio_infoframe().
+ */
+
+ ret = hdmi_generate_hdr_infoframe(connector, conn_state);
+ if (ret)
+ return ret;
+
+ ret = hdmi_generate_hdmi_vendor_infoframe(connector, conn_state);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
/**
* drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
* @connector: DRM Connector
* @state: the DRM State object
*
@@ -342,10 +480,14 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
ret = hdmi_compute_config(connector, new_conn_state, mode);
if (ret)
return ret;
+ ret = hdmi_generate_infoframes(connector, new_conn_state);
+ if (ret)
+ return ret;
+
if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb ||
old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
@@ -358,5 +500,199 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
}
return 0;
}
EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check);
+
+#define HDMI_MAX_INFOFRAME_SIZE 29
+
+static int clear_device_infoframe(struct drm_connector *connector,
+ enum hdmi_infoframe_type type)
+{
+ const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
+ struct drm_device *dev = connector->dev;
+ int ret;
+
+ drm_dbg_kms(dev, "Clearing infoframe type 0x%x\n", type);
+
+ if (!funcs || !funcs->clear_infoframe) {
+ drm_dbg_kms(dev, "Function not implemented, bailing.\n");
+ return 0;
+ }
+
+ ret = funcs->clear_infoframe(connector, type);
+ if (ret) {
+ drm_dbg_kms(dev, "Call failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int clear_infoframe(struct drm_connector *connector,
+ struct drm_connector_hdmi_infoframe *old_frame)
+{
+ int ret;
+
+ ret = clear_device_infoframe(connector, old_frame->data.any.type);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int write_device_infoframe(struct drm_connector *connector,
+ union hdmi_infoframe *frame)
+{
+ const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;
+ struct drm_device *dev = connector->dev;
+ u8 buffer[HDMI_MAX_INFOFRAME_SIZE];
+ int ret;
+ int len;
+
+ drm_dbg_kms(dev, "Writing infoframe type %x\n", frame->any.type);
+
+ if (!funcs || !funcs->write_infoframe) {
+ drm_dbg_kms(dev, "Function not implemented, bailing.\n");
+ return -ENOSYS;
+ }
+
+ len = hdmi_infoframe_pack(frame, buffer, sizeof(buffer));
+ if (len < 0)
+ return len;
+
+ ret = funcs->write_infoframe(connector, frame->any.type, buffer, len);
+ if (ret) {
+ drm_dbg_kms(dev, "Call failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int write_infoframe(struct drm_connector *connector,
+ struct drm_connector_hdmi_infoframe *new_frame)
+{
+ int ret;
+
+ ret = write_device_infoframe(connector, &new_frame->data);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int write_or_clear_infoframe(struct drm_connector *connector,
+ struct drm_connector_hdmi_infoframe *old_frame,
+ struct drm_connector_hdmi_infoframe *new_frame)
+{
+ if (new_frame->set)
+ return write_infoframe(connector, new_frame);
+
+ if (old_frame->set && !new_frame->set)
+ return clear_infoframe(connector, old_frame);
+
+ return 0;
+}
+
+/**
+ * drm_atomic_helper_connector_hdmi_update_infoframes - Update the Infoframes
+ * @connector: A pointer to the HDMI connector
+ * @state: The HDMI connector state to generate the infoframe from
+ *
+ * This function is meant for HDMI connector drivers to write their
+ * infoframes. It will typically be used in a
+ * @drm_connector_helper_funcs.atomic_enable implementation.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
+ struct drm_atomic_state *state)
+{
+ struct drm_connector_state *old_conn_state =
+ drm_atomic_get_old_connector_state(state, connector);
+ struct drm_connector_state *new_conn_state =
+ drm_atomic_get_new_connector_state(state, connector);
+ struct drm_display_info *info = &connector->display_info;
+ int ret;
+
+ if (!info->is_hdmi)
+ return 0;
+
+ mutex_lock(&connector->hdmi.infoframes.lock);
+
+ ret = write_or_clear_infoframe(connector,
+ &old_conn_state->hdmi.infoframes.avi,
+ &new_conn_state->hdmi.infoframes.avi);
+ if (ret)
+ goto out;
+
+ if (connector->hdmi.infoframes.audio.set) {
+ ret = write_infoframe(connector,
+ &connector->hdmi.infoframes.audio);
+ if (ret)
+ goto out;
+ }
+
+ ret = write_or_clear_infoframe(connector,
+ &old_conn_state->hdmi.infoframes.hdr_drm,
+ &new_conn_state->hdmi.infoframes.hdr_drm);
+ if (ret)
+ goto out;
+
+ ret = write_or_clear_infoframe(connector,
+ &old_conn_state->hdmi.infoframes.spd,
+ &new_conn_state->hdmi.infoframes.spd);
+ if (ret)
+ goto out;
+
+ if (info->has_hdmi_infoframe) {
+ ret = write_or_clear_infoframe(connector,
+ &old_conn_state->hdmi.infoframes.hdmi,
+ &new_conn_state->hdmi.infoframes.hdmi);
+ if (ret)
+ goto out;
+ }
+
+out:
+ mutex_unlock(&connector->hdmi.infoframes.lock);
+ return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_infoframes);
+
+/**
+ * drm_atomic_helper_connector_hdmi_update_audio_infoframe - Update the Audio Infoframe
+ * @connector: A pointer to the HDMI connector
+ * @frame: A pointer to the audio infoframe to write
+ *
+ * This function is meant for HDMI connector drivers to update their
+ * audio infoframe. It will typically be used in one of the ALSA hooks
+ * (most likely prepare).
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int
+drm_atomic_helper_connector_hdmi_update_audio_infoframe(struct drm_connector *connector,
+ struct hdmi_audio_infoframe *frame)
+{
+ struct drm_connector_hdmi_infoframe *infoframe =
+ &connector->hdmi.infoframes.audio;
+ struct drm_display_info *info = &connector->display_info;
+ int ret;
+
+ if (!info->is_hdmi)
+ return 0;
+
+ mutex_lock(&connector->hdmi.infoframes.lock);
+
+ memcpy(&infoframe->data, frame, sizeof(infoframe->data));
+ infoframe->set = true;
+
+ ret = write_infoframe(connector, infoframe);
+
+ mutex_unlock(&connector->hdmi.infoframes.lock);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_update_audio_infoframe);
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index bdd3361ccc73..7237e8cf8c58 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -276,10 +276,11 @@ static int __drm_connector_init(struct drm_device *dev,
INIT_LIST_HEAD(&connector->global_connector_list_entry);
INIT_LIST_HEAD(&connector->probed_modes);
INIT_LIST_HEAD(&connector->modes);
mutex_init(&connector->mutex);
mutex_init(&connector->edid_override_mutex);
+ mutex_init(&connector->hdmi.infoframes.lock);
connector->edid_blob_ptr = NULL;
connector->epoch_counter = 0;
connector->tile_blob_ptr = NULL;
connector->status = connector_status_unknown;
connector->display_info.panel_orientation =
@@ -454,10 +455,12 @@ EXPORT_SYMBOL(drmm_connector_init);
/**
* drmm_connector_hdmi_init - Init a preallocated HDMI connector
* @dev: DRM device
* @connector: A pointer to the HDMI connector to init
+ * @vendor: HDMI Controller Vendor name
+ * @product: HDMI Controller Product name
* @funcs: callbacks for this connector
* @hdmi_funcs: HDMI-related callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
* @supported_formats: Bitmask of @hdmi_colorspace listing supported output formats
@@ -474,19 +477,27 @@ EXPORT_SYMBOL(drmm_connector_init);
* Returns:
* Zero on success, error code on failure.
*/
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
+ const char *vendor, const char *product,
const struct drm_connector_funcs *funcs,
const struct drm_connector_hdmi_funcs *hdmi_funcs,
int connector_type,
struct i2c_adapter *ddc,
unsigned long supported_formats,
unsigned int max_bpc)
{
int ret;
+ if (!vendor || !product)
+ return -EINVAL;
+
+ if ((strlen(vendor) > DRM_CONNECTOR_HDMI_VENDOR_LEN) ||
+ (strlen(product) > DRM_CONNECTOR_HDMI_PRODUCT_LEN))
+ return -EINVAL;
+
if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector_type == DRM_MODE_CONNECTOR_HDMIB))
return -EINVAL;
if (!supported_formats || !(supported_formats & BIT(HDMI_COLORSPACE_RGB)))
@@ -498,10 +509,12 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc);
if (ret)
return ret;
connector->hdmi.supported_formats = supported_formats;
+ strtomem_pad(connector->hdmi.vendor, vendor, 0);
+ strtomem_pad(connector->hdmi.product, product, 0);
/*
* drm_connector_attach_max_bpc_property() requires the
* connector to have a state.
*/
@@ -650,10 +663,11 @@ void drm_connector_cleanup(struct drm_connector *connector)
WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
if (connector->state && connector->funcs->atomic_destroy_state)
connector->funcs->atomic_destroy_state(connector,
connector->state);
+ mutex_destroy(&connector->hdmi.infoframes.lock);
mutex_destroy(&connector->mutex);
memset(connector, 0, sizeof(*connector));
if (dev->registered)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 672b74bc9e23..4e3c2c7dfaf2 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -189,10 +189,11 @@ static void drm_test_connector_hdmi_init_valid(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -208,10 +209,11 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
BIT(HDMI_COLORSPACE_RGB),
@@ -227,10 +229,11 @@ static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -246,10 +249,11 @@ static void drm_test_connector_hdmi_init_bpc_null(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -269,10 +273,11 @@ static void drm_test_connector_hdmi_init_bpc_8(struct kunit *test)
struct drm_property *prop;
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -304,10 +309,11 @@ static void drm_test_connector_hdmi_init_bpc_10(struct kunit *test)
struct drm_property *prop;
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -339,10 +345,11 @@ static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
struct drm_property *prop;
uint64_t val;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -370,10 +377,11 @@ static void drm_test_connector_hdmi_init_formats_empty(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
0,
@@ -389,10 +397,11 @@ static void drm_test_connector_hdmi_init_formats_no_rgb(struct kunit *test)
{
struct drm_connector_init_priv *priv = test->priv;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_YUV422),
@@ -409,10 +418,11 @@ static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
unsigned int connector_type = *(unsigned int *)test->param_value;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
connector_type,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -443,10 +453,11 @@ static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
struct drm_connector_init_priv *priv = test->priv;
unsigned int connector_type = *(unsigned int *)test->param_value;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
connector_type,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
@@ -708,10 +719,11 @@ static void drm_test_drm_connector_attach_broadcast_rgb_property_hdmi_connector(
struct drm_connector *connector = &priv->connector;
struct drm_property *prop;
int ret;
ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ "Vendor", "Product",
&dummy_funcs,
&dummy_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
BIT(HDMI_COLORSPACE_RGB),
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index da5c3d9a80bb..e0bbe672642e 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -204,10 +204,11 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test,
enc->possible_crtcs = drm_crtc_mask(priv->crtc);
conn = &priv->connector;
ret = drmm_connector_hdmi_init(drm, conn,
+ "Vendor", "Product",
&dummy_connector_funcs,
&dummy_connector_hdmi_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
formats,
diff --git a/include/drm/display/drm_hdmi_state_helper.h b/include/drm/display/drm_hdmi_state_helper.h
index 6021983e2602..fbf86ff9cdfb 100644
--- a/include/drm/display/drm_hdmi_state_helper.h
+++ b/include/drm/display/drm_hdmi_state_helper.h
@@ -4,13 +4,20 @@
#define DRM_HDMI_STATE_HELPER_H_
struct drm_atomic_state;
struct drm_connector;
struct drm_connector_state;
+struct hdmi_audio_infoframe;
void __drm_atomic_helper_connector_hdmi_reset(struct drm_connector *connector,
struct drm_connector_state *new_conn_state);
int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
struct drm_atomic_state *state);
+int drm_atomic_helper_connector_hdmi_update_audio_infoframe(struct drm_connector *connector,
+ struct hdmi_audio_infoframe *frame);
+int drm_atomic_helper_connector_hdmi_update_infoframes(struct drm_connector *connector,
+ struct drm_atomic_state *state);
+
+
#endif // DRM_HDMI_STATE_HELPER_H_
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 1fca26d51218..450c5605d145 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -912,10 +912,25 @@ struct drm_tv_connector_state {
unsigned int overscan;
unsigned int saturation;
unsigned int hue;
};
+/**
+ * struct drm_connector_hdmi_infoframe - HDMI Infoframe container
+ */
+struct drm_connector_hdmi_infoframe {
+ /**
+ * @data: HDMI Infoframe structure
+ */
+ union hdmi_infoframe data;
+
+ /**
+ * @set: Is the content of @data valid?
+ */
+ bool set;
+};
+
/**
* struct drm_connector_state - mutable connector state
*/
struct drm_connector_state {
/** @connector: backpointer to the connector */
@@ -1069,11 +1084,40 @@ struct drm_connector_state {
* Broadcast RGB selection value.
*/
enum drm_hdmi_broadcast_rgb broadcast_rgb;
/**
- * @is_full_range: Is the output supposed to use a full
+ * @infoframes: HDMI Infoframes matching that state
+ */
+ struct {
+ /**
+ * @avi: AVI Infoframes structure matching our
+ * state.
+ */
+ struct drm_connector_hdmi_infoframe avi;
+
+ /**
+ * @hdr_drm: DRM (Dynamic Range and Mastering)
+ * Infoframes structure matching our state.
+ */
+ struct drm_connector_hdmi_infoframe hdr_drm;
+
+ /**
+ * @spd: SPD Infoframes structure matching our
+ * state.
+ */
+ struct drm_connector_hdmi_infoframe spd;
+
+ /**
+ * @vendor: HDMI Vendor Infoframes structure
+ * matching our state.
+ */
+ struct drm_connector_hdmi_infoframe hdmi;
+ } infoframes;
+
+ /**
+ * @is_limited_range: Is the output supposed to use a limited
* RGB Quantization Range or not?
*/
bool is_limited_range;
/**
@@ -1113,10 +1157,45 @@ struct drm_connector_hdmi_funcs {
*/
enum drm_mode_status
(*tmds_char_rate_valid)(const struct drm_connector *connector,
const struct drm_display_mode *mode,
unsigned long long tmds_rate);
+
+ /**
+ * @clear_infoframe:
+ *
+ * This callback is invoked through
+ * @drm_atomic_helper_connector_hdmi_update_infoframes during a
+ * commit to clear the infoframes into the hardware. It will be
+ * called multiple times, once for every disabled infoframe
+ * type.
+ *
+ * The @clear_infoframe callback is optional.
+ *
+ * Returns:
+ * 0 on success, a negative error code otherwise
+ */
+ int (*clear_infoframe)(struct drm_connector *connector,
+ enum hdmi_infoframe_type type);
+
+ /**
+ * @write_infoframe:
+ *
+ * This callback is invoked through
+ * @drm_atomic_helper_connector_hdmi_update_infoframes during a
+ * commit to program the infoframes into the hardware. It will
+ * be called multiple times, once for every updated infoframe
+ * type.
+ *
+ * The @write_infoframe callback is mandatory.
+ *
+ * Returns:
+ * 0 on success, a negative error code otherwise
+ */
+ int (*write_infoframe)(struct drm_connector *connector,
+ enum hdmi_infoframe_type type,
+ const u8 *buffer, size_t len);
};
/**
* struct drm_connector_funcs - control connectors on a given device
*
@@ -1984,20 +2063,49 @@ struct drm_connector {
/**
* @hdmi: HDMI-related variable and properties.
*/
struct {
+#define DRM_CONNECTOR_HDMI_VENDOR_LEN 8
+ /**
+ * @vendor: HDMI Controller Vendor Name
+ */
+ unsigned char vendor[DRM_CONNECTOR_HDMI_VENDOR_LEN] __nonstring;
+
+#define DRM_CONNECTOR_HDMI_PRODUCT_LEN 16
+ /**
+ * @product: HDMI Controller Product Name
+ */
+ unsigned char product[DRM_CONNECTOR_HDMI_PRODUCT_LEN] __nonstring;
+
/**
* @supported_formats: Bitmask of @hdmi_colorspace
* supported by the controller.
*/
unsigned long supported_formats;
/**
* @funcs: HDMI connector Control Functions
*/
const struct drm_connector_hdmi_funcs *funcs;
+
+ /**
+ * @infoframes: Current Infoframes output by the connector
+ */
+ struct {
+ /**
+ * @lock: Mutex protecting against concurrent access to
+ * the infoframes, most notably between KMS and ALSA.
+ */
+ struct mutex lock;
+
+ /**
+ * @audio: Current Audio Infoframes structure. Protected
+ * by @lock.
+ */
+ struct drm_connector_hdmi_infoframe audio;
+ } infoframes;
} hdmi;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
@@ -2015,10 +2123,11 @@ int drmm_connector_init(struct drm_device *dev,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc);
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
+ const char *vendor, const char *product,
const struct drm_connector_funcs *funcs,
const struct drm_connector_hdmi_funcs *hdmi_funcs,
int connector_type,
struct i2c_adapter *ddc,
unsigned long supported_formats,
--
2.45.0
Now that we're tracking the output bpc count in the connector state,
let's add a few tests to make sure it works as expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/Kconfig | 1 +
drivers/gpu/drm/tests/Makefile | 1 +
drivers/gpu/drm/tests/drm_connector_test.c | 140 +++++++
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 438 +++++++++++++++++++++
drivers/gpu/drm/tests/drm_kunit_edid.h | 106 +++++
5 files changed, 686 insertions(+)
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 026444eeb5c6..9703429de6b9 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -77,10 +77,11 @@ config DRM_KUNIT_TEST_HELPERS
config DRM_KUNIT_TEST
tristate "KUnit tests for DRM" if !KUNIT_ALL_TESTS
depends on DRM && KUNIT && MMU
select DRM_BUDDY
select DRM_DISPLAY_DP_HELPER
+ select DRM_DISPLAY_HDMI_STATE_HELPER
select DRM_DISPLAY_HELPER
select DRM_EXEC
select DRM_EXPORT_FOR_TESTS if m
select DRM_GEM_SHMEM_HELPER
select DRM_KUNIT_TEST_HELPERS
diff --git a/drivers/gpu/drm/tests/Makefile b/drivers/gpu/drm/tests/Makefile
index d6183b3d7688..56dab563abd7 100644
--- a/drivers/gpu/drm/tests/Makefile
+++ b/drivers/gpu/drm/tests/Makefile
@@ -12,10 +12,11 @@ obj-$(CONFIG_DRM_KUNIT_TEST) += \
drm_exec_test.o \
drm_format_helper_test.o \
drm_format_test.o \
drm_framebuffer_test.o \
drm_gem_shmem_test.o \
+ drm_hdmi_state_helper_test.o \
drm_managed_test.o \
drm_mm_test.o \
drm_modes_test.o \
drm_plane_helper_test.o \
drm_probe_helper_test.o \
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 2661eb64a5cd..2519b91de95e 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -10,10 +10,12 @@
#include <drm/drm_drv.h>
#include <drm/drm_kunit_helpers.h>
#include <kunit/test.h>
+#include "../drm_crtc_internal.h"
+
struct drm_connector_init_priv {
struct drm_device drm;
struct drm_connector connector;
struct i2c_adapter ddc;
};
@@ -204,10 +206,143 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
NULL,
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
+/*
+ * Test that the registration of a connector with an invalid maximum bpc
+ * count fails.
+ */
+static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 9);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector with a null maximum bpc
+ * count fails.
+ */
+static void drm_test_connector_hdmi_init_bpc_null(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 0);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector with a maximum bpc count of
+ * 8 succeeds, registers the max bpc property, but doesn't register the
+ * HDR output metadata one.
+ */
+static void drm_test_connector_hdmi_init_bpc_8(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ struct drm_connector *connector = &priv->connector;
+ struct drm_property *prop;
+ uint64_t val;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ prop = connector->max_bpc_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+
+ ret = drm_object_property_get_value(&connector->base, prop, &val);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_EQ(test, val, 8);
+
+ prop = priv->drm.mode_config.hdr_output_metadata_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+}
+
+/*
+ * Test that the registration of a connector with a maximum bpc count of
+ * 10 succeeds and registers the max bpc and HDR output metadata
+ * properties.
+ */
+static void drm_test_connector_hdmi_init_bpc_10(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ struct drm_connector *connector = &priv->connector;
+ struct drm_property *prop;
+ uint64_t val;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 10);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ prop = connector->max_bpc_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+
+ ret = drm_object_property_get_value(&connector->base, prop, &val);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_EQ(test, val, 10);
+
+ prop = priv->drm.mode_config.hdr_output_metadata_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+}
+
+/*
+ * Test that the registration of a connector with a maximum bpc count of
+ * 12 succeeds and registers the max bpc and HDR output metadata
+ * properties.
+ */
+static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ struct drm_connector *connector = &priv->connector;
+ struct drm_property *prop;
+ uint64_t val;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, connector,
+ &dummy_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ 12);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ prop = connector->max_bpc_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+
+ ret = drm_object_property_get_value(&connector->base, prop, &val);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_EQ(test, val, 12);
+
+ prop = priv->drm.mode_config.hdr_output_metadata_property;
+ KUNIT_ASSERT_NOT_NULL(test, prop);
+ KUNIT_EXPECT_NOT_NULL(test, drm_mode_obj_find_prop_id(&connector->base, prop->base.id));
+}
+
/*
* Test that the registration of an HDMI connector with an HDMI
* connector type succeeds.
*/
static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
@@ -282,10 +417,15 @@ KUNIT_ARRAY_PARAM(drm_connector_hdmi_init_type_invalid,
drm_connector_hdmi_init_type_invalid_tests,
drm_connector_hdmi_init_type_desc);
static struct kunit_case drmm_connector_hdmi_init_tests[] = {
KUNIT_CASE(drm_test_connector_hdmi_init_valid),
+ KUNIT_CASE(drm_test_connector_hdmi_init_bpc_8),
+ KUNIT_CASE(drm_test_connector_hdmi_init_bpc_10),
+ KUNIT_CASE(drm_test_connector_hdmi_init_bpc_12),
+ KUNIT_CASE(drm_test_connector_hdmi_init_bpc_invalid),
+ KUNIT_CASE(drm_test_connector_hdmi_init_bpc_null),
KUNIT_CASE(drm_test_connector_hdmi_init_null_ddc),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_valid,
drm_connector_hdmi_init_type_valid_gen_params),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_invalid,
drm_connector_hdmi_init_type_invalid_gen_params),
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
new file mode 100644
index 000000000000..3ecae50ef47f
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -0,0 +1,438 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Kunit test for drm_hdmi_state_helper functions
+ */
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_state_helper.h>
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_kunit_helpers.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+
+#include <drm/display/drm_hdmi_state_helper.h>
+
+#include "../drm_crtc_internal.h"
+
+#include <kunit/test.h>
+
+#include "drm_kunit_edid.h"
+
+struct drm_atomic_helper_connector_hdmi_priv {
+ struct drm_device drm;
+ struct drm_plane *plane;
+ struct drm_crtc *crtc;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+
+ const char *current_edid;
+ size_t current_edid_len;
+};
+
+#define connector_to_priv(c) \
+ container_of_const(c, struct drm_atomic_helper_connector_hdmi_priv, connector)
+
+static struct drm_display_mode *find_preferred_mode(struct drm_connector *connector)
+{
+ struct drm_device *drm = connector->dev;
+ struct drm_display_mode *mode, *preferred;
+
+ mutex_lock(&drm->mode_config.mutex);
+ preferred = list_first_entry(&connector->modes, struct drm_display_mode, head);
+ list_for_each_entry(mode, &connector->modes, head)
+ if (mode->type & DRM_MODE_TYPE_PREFERRED)
+ preferred = mode;
+ mutex_unlock(&drm->mode_config.mutex);
+
+ return preferred;
+}
+
+static int light_up_connector(struct kunit *test,
+ struct drm_device *drm,
+ struct drm_crtc *crtc,
+ struct drm_connector *connector,
+ struct drm_display_mode *mode,
+ struct drm_modeset_acquire_ctx *ctx)
+{
+ struct drm_atomic_state *state;
+ struct drm_connector_state *conn_state;
+ struct drm_crtc_state *crtc_state;
+ int ret;
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, connector);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+
+ ret = drm_atomic_set_mode_for_crtc(crtc_state, mode);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ crtc_state->enable = true;
+ crtc_state->active = true;
+
+ ret = drm_atomic_commit(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ return 0;
+}
+
+static int set_connector_edid(struct kunit *test, struct drm_connector *connector,
+ const char *edid, size_t edid_len)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv =
+ connector_to_priv(connector);
+ struct drm_device *drm = connector->dev;
+ int ret;
+
+ priv->current_edid = edid;
+ priv->current_edid_len = edid_len;
+
+ mutex_lock(&drm->mode_config.mutex);
+ ret = connector->funcs->fill_modes(connector, 4096, 4096);
+ mutex_unlock(&drm->mode_config.mutex);
+ KUNIT_ASSERT_GT(test, ret, 0);
+
+ return 0;
+}
+
+static int dummy_connector_get_modes(struct drm_connector *connector)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv =
+ connector_to_priv(connector);
+ const struct drm_edid *edid;
+ unsigned int num_modes;
+
+ edid = drm_edid_alloc(priv->current_edid, priv->current_edid_len);
+ if (!edid)
+ return -EINVAL;
+
+ drm_edid_connector_update(connector, edid);
+ num_modes = drm_edid_connector_add_modes(connector);
+
+ drm_edid_free(edid);
+
+ return num_modes;
+}
+
+static const struct drm_connector_helper_funcs dummy_connector_helper_funcs = {
+ .atomic_check = drm_atomic_helper_connector_hdmi_check,
+ .get_modes = dummy_connector_get_modes,
+};
+
+static void dummy_hdmi_connector_reset(struct drm_connector *connector)
+{
+ drm_atomic_helper_connector_reset(connector);
+ __drm_atomic_helper_connector_hdmi_reset(connector, connector->state);
+}
+
+static const struct drm_connector_funcs dummy_connector_funcs = {
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .reset = dummy_hdmi_connector_reset,
+};
+
+static
+struct drm_atomic_helper_connector_hdmi_priv *
+drm_atomic_helper_connector_hdmi_init(struct kunit *test,
+ unsigned int max_bpc)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector *conn;
+ struct drm_encoder *enc;
+ struct drm_device *drm;
+ struct device *dev;
+ int ret;
+
+ dev = drm_kunit_helper_alloc_device(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
+
+ priv = drm_kunit_helper_alloc_drm_device(test, dev,
+ struct drm_atomic_helper_connector_hdmi_priv, drm,
+ DRIVER_MODESET | DRIVER_ATOMIC);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
+ test->priv = priv;
+
+ drm = &priv->drm;
+ priv->plane = drm_kunit_helper_create_primary_plane(test, drm,
+ NULL,
+ NULL,
+ NULL, 0,
+ NULL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->plane);
+
+ priv->crtc = drm_kunit_helper_create_crtc(test, drm,
+ priv->plane, NULL,
+ NULL,
+ NULL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->crtc);
+
+ enc = &priv->encoder;
+ ret = drmm_encoder_init(drm, enc, NULL, DRM_MODE_ENCODER_TMDS, NULL);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ enc->possible_crtcs = drm_crtc_mask(priv->crtc);
+
+ conn = &priv->connector;
+ ret = drmm_connector_hdmi_init(drm, conn,
+ &dummy_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ NULL,
+ max_bpc);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ drm_connector_helper_add(conn, &dummy_connector_helper_funcs);
+ drm_connector_attach_encoder(conn, enc);
+
+ drm_mode_config_reset(drm);
+
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ return priv;
+}
+
+/*
+ * Test that if we change the maximum bpc property to a different value,
+ * we trigger a mode change on the connector's CRTC, which will in turn
+ * disable/enable the connector.
+ */
+static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ conn = &priv->connector;
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state->hdmi.output_bpc = 8;
+
+ KUNIT_ASSERT_NE(test,
+ old_conn_state->hdmi.output_bpc,
+ new_conn_state->hdmi.output_bpc);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state = drm_atomic_get_new_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ KUNIT_ASSERT_NE(test,
+ old_conn_state->hdmi.output_bpc,
+ new_conn_state->hdmi.output_bpc);
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+ KUNIT_EXPECT_TRUE(test, crtc_state->mode_changed);
+}
+
+/*
+ * Test that if we set the output bpc property to the same value, we
+ * don't trigger a mode change on the connector's CRTC and leave the
+ * connector unaffected.
+ */
+static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *old_conn_state;
+ struct drm_connector_state *new_conn_state;
+ struct drm_crtc_state *crtc_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ conn = &priv->connector;
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ new_conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ new_conn_state->hdmi.output_bpc,
+ old_conn_state->hdmi.output_bpc);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ old_conn_state = drm_atomic_get_old_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
+
+ new_conn_state = drm_atomic_get_new_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
+
+ KUNIT_EXPECT_EQ(test,
+ old_conn_state->hdmi.output_bpc,
+ new_conn_state->hdmi.output_bpc);
+
+ crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
+ KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
+}
+
+static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
+ KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_changed),
+ KUNIT_CASE(drm_test_check_output_bpc_crtc_mode_not_changed),
+ { }
+};
+
+static struct kunit_suite drm_atomic_helper_connector_hdmi_check_test_suite = {
+ .name = "drm_atomic_helper_connector_hdmi_check",
+ .test_cases = drm_atomic_helper_connector_hdmi_check_tests,
+};
+
+/*
+ * Test that if the connector was initialised with a maximum bpc of 8,
+ * the value of the max_bpc and max_requested_bpc properties out of
+ * reset are also set to 8, and output_bpc is set to 0 and will be
+ * filled at atomic_check time.
+ */
+static void drm_test_check_bpc_8_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test, 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->max_requested_bpc, 8);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 0);
+}
+
+/*
+ * Test that if the connector was initialised with a maximum bpc of 10,
+ * the value of the max_bpc and max_requested_bpc properties out of
+ * reset are also set to 10, and output_bpc is set to 0 and will be
+ * filled at atomic_check time.
+ */
+static void drm_test_check_bpc_10_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 10);
+ KUNIT_EXPECT_EQ(test, conn_state->max_requested_bpc, 10);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 0);
+}
+
+/*
+ * Test that if the connector was initialised with a maximum bpc of 12,
+ * the value of the max_bpc and max_requested_bpc properties out of
+ * reset are also set to 12, and output_bpc is set to 0 and will be
+ * filled at atomic_check time.
+ */
+static void drm_test_check_bpc_12_value(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_connector_state *conn_state;
+ struct drm_connector *conn;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test, 12);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ conn_state = conn->state;
+ KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 12);
+ KUNIT_EXPECT_EQ(test, conn_state->max_requested_bpc, 12);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 0);
+}
+
+static struct kunit_case drm_atomic_helper_connector_hdmi_reset_tests[] = {
+ KUNIT_CASE(drm_test_check_bpc_8_value),
+ KUNIT_CASE(drm_test_check_bpc_10_value),
+ KUNIT_CASE(drm_test_check_bpc_12_value),
+ { }
+};
+
+static struct kunit_suite drm_atomic_helper_connector_hdmi_reset_test_suite = {
+ .name = "drm_atomic_helper_connector_hdmi_reset",
+ .test_cases = drm_atomic_helper_connector_hdmi_reset_tests,
+};
+
+kunit_test_suites(
+ &drm_atomic_helper_connector_hdmi_check_test_suite,
+ &drm_atomic_helper_connector_hdmi_reset_test_suite,
+);
+
+MODULE_AUTHOR("Maxime Ripard <[email protected]>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
new file mode 100644
index 000000000000..0366dd29c820
--- /dev/null
+++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
@@ -0,0 +1,106 @@
+#ifndef DRM_KUNIT_EDID_H_
+#define DRM_KUNIT_EDID_H_
+
+/*
+ * edid-decode (hex):
+ *
+ * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
+ * 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
+ * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
+ * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
+ * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
+ * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
+ * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 92
+ *
+ * 02 03 1b 81 e3 05 00 20 41 10 e2 00 4a 6d 03 0c
+ * 00 12 34 00 28 20 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+ * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0
+ *
+ * ----------------
+ *
+ * Block 0, Base EDID:
+ * EDID Structure Version & Revision: 1.3
+ * Vendor & Product Identification:
+ * Manufacturer: LNX
+ * Model: 42
+ * Made in: 2023
+ * Basic Display Parameters & Features:
+ * Digital display
+ * DFP 1.x compatible TMDS
+ * Maximum image size: 160 cm x 90 cm
+ * Gamma: 2.20
+ * Monochrome or grayscale display
+ * First detailed timing is the preferred timing
+ * Color Characteristics:
+ * Red : 0.0000, 0.0000
+ * Green: 0.0000, 0.0000
+ * Blue : 0.0000, 0.0000
+ * White: 0.0000, 0.0000
+ * Established Timings I & II:
+ * DMT 0x04: 640x480 59.940476 Hz 4:3 31.469 kHz 25.175000 MHz
+ * Standard Timings: none
+ * Detailed Timing Descriptors:
+ * DTD 1: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz (1600 mm x 900 mm)
+ * Hfront 88 Hsync 44 Hback 148 Hpol P
+ * Vfront 4 Vsync 5 Vback 36 Vpol P
+ * Display Product Name: 'Test EDID'
+ * Display Range Limits:
+ * Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
+ * Dummy Descriptor:
+ * Extension blocks: 1
+ * Checksum: 0x92
+ *
+ * ----------------
+ *
+ * Block 1, CTA-861 Extension Block:
+ * Revision: 3
+ * Underscans IT Video Formats by default
+ * Native detailed modes: 1
+ * Colorimetry Data Block:
+ * sRGB
+ * Video Data Block:
+ * VIC 16: 1920x1080 60.000000 Hz 16:9 67.500 kHz 148.500000 MHz
+ * Video Capability Data Block:
+ * YCbCr quantization: No Data
+ * RGB quantization: Selectable (via AVI Q)
+ * PT scan behavior: No Data
+ * IT scan behavior: Always Underscanned
+ * CE scan behavior: Always Underscanned
+ * Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
+ * Source physical address: 1.2.3.4
+ * Maximum TMDS clock: 200 MHz
+ * Extended HDMI video details:
+ * Checksum: 0xd0 Unused space in Extension Block: 100 bytes
+ */
+static const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {
+ 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
+ 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
+ 0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
+ 0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
+ 0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
+ 0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
+ 0x46, 0x00, 0x00, 0xc4, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x41, 0x02, 0x03, 0x1b, 0x81,
+ 0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0x4a, 0x6d, 0x03, 0x0c,
+ 0x00, 0x12, 0x34, 0x00, 0x28, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0xd0
+};
+
+#endif // DRM_KUNIT_EDID_H_
--
2.45.0
Just like BPC, we'll add support for automatic selection of the output
format for HDMI connectors.
Let's add the needed defaults and fields for now.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 3 ++-
drivers/gpu/drm/drm_atomic.c | 2 ++
drivers/gpu/drm/drm_connector.c | 31 ++++++++++++++++++++++
drivers/gpu/drm/tests/drm_connector_test.c | 9 +++++++
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 22 +++++++++++----
include/drm/drm_connector.h | 20 ++++++++++++++
6 files changed, 81 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 82293d93b5f8..f6cd0612ea2c 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -43,11 +43,12 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
struct drm_connector_state *old_conn_state =
drm_atomic_get_old_connector_state(state, connector);
struct drm_connector_state *new_conn_state =
drm_atomic_get_new_connector_state(state, connector);
- if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc) {
+ if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
+ old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
struct drm_crtc *crtc = new_conn_state->crtc;
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state))
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 4e11cfb4518b..8730137baa86 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1144,10 +1144,12 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
drm_printf(p, "\tcolorspace=%s\n", drm_get_colorspace_name(state->colorspace));
if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
drm_printf(p, "\toutput_bpc=%u\n", state->hdmi.output_bpc);
+ drm_printf(p, "\toutput_format=%s\n",
+ drm_hdmi_connector_get_output_format_name(state->hdmi.output_format));
}
if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK)
if (state->writeback_job && state->writeback_job->fb)
drm_printf(p, "\tfb=%d\n", state->writeback_job->fb->base.id);
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index da51a2bcb978..b629c8e990f4 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -457,10 +457,11 @@ EXPORT_SYMBOL(drmm_connector_init);
* @dev: DRM device
* @connector: A pointer to the HDMI connector to init
* @funcs: callbacks for this connector
* @connector_type: user visible type of the connector
* @ddc: optional pointer to the associated ddc adapter
+ * @supported_formats: Bitmask of @hdmi_colorspace listing supported output formats
* @max_bpc: Maximum bits per char the HDMI connector supports
*
* Initialises a preallocated HDMI connector. Connectors can be
* subclassed as part of driver connector objects.
*
@@ -475,25 +476,31 @@ EXPORT_SYMBOL(drmm_connector_init);
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc,
+ unsigned long supported_formats,
unsigned int max_bpc)
{
int ret;
if (!(connector_type == DRM_MODE_CONNECTOR_HDMIA ||
connector_type == DRM_MODE_CONNECTOR_HDMIB))
return -EINVAL;
+ if (!supported_formats || !(supported_formats & BIT(HDMI_COLORSPACE_RGB)))
+ return -EINVAL;
+
if (!(max_bpc == 8 || max_bpc == 10 || max_bpc == 12))
return -EINVAL;
ret = drmm_connector_init(dev, connector, funcs, connector_type, ddc);
if (ret)
return ret;
+ connector->hdmi.supported_formats = supported_formats;
+
/*
* drm_connector_attach_max_bpc_property() requires the
* connector to have a state.
*/
if (connector->funcs->reset)
@@ -1199,10 +1206,34 @@ static const u32 dp_colorspaces =
BIT(DRM_MODE_COLORIMETRY_SYCC_601) |
BIT(DRM_MODE_COLORIMETRY_OPYCC_601) |
BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) |
BIT(DRM_MODE_COLORIMETRY_BT2020_YCC);
+static const char * const output_format_str[] = {
+ [HDMI_COLORSPACE_RGB] = "RGB",
+ [HDMI_COLORSPACE_YUV420] = "YUV 4:2:0",
+ [HDMI_COLORSPACE_YUV422] = "YUV 4:2:2",
+ [HDMI_COLORSPACE_YUV444] = "YUV 4:4:4",
+};
+
+/*
+ * drm_hdmi_connector_get_output_format_name() - Return a string for HDMI connector output format
+ * @fmt: Output format to compute name of
+ *
+ * Returns: the name of the output format, or NULL if the type is not
+ * valid.
+ */
+const char *
+drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt)
+{
+ if (fmt >= ARRAY_SIZE(output_format_str))
+ return NULL;
+
+ return output_format_str[fmt];
+}
+EXPORT_SYMBOL(drm_hdmi_connector_get_output_format_name);
+
/**
* DOC: standard connector properties
*
* DRM connectors have a few standardized properties:
*
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 2519b91de95e..9589867bdf7c 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -185,10 +185,11 @@ static void drm_test_connector_hdmi_init_valid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
@@ -202,10 +203,11 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
/*
@@ -219,10 +221,11 @@ static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
9);
KUNIT_EXPECT_LT(test, ret, 0);
}
/*
@@ -236,10 +239,11 @@ static void drm_test_connector_hdmi_init_bpc_null(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
0);
KUNIT_EXPECT_LT(test, ret, 0);
}
/*
@@ -257,10 +261,11 @@ static void drm_test_connector_hdmi_init_bpc_8(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -290,10 +295,11 @@ static void drm_test_connector_hdmi_init_bpc_10(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
10);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -323,10 +329,11 @@ static void drm_test_connector_hdmi_init_bpc_12(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, connector,
&dummy_funcs,
DRM_MODE_CONNECTOR_HDMIA,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
12);
KUNIT_EXPECT_EQ(test, ret, 0);
prop = connector->max_bpc_property;
KUNIT_ASSERT_NOT_NULL(test, prop);
@@ -353,10 +360,11 @@ static void drm_test_connector_hdmi_init_type_valid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_valid_tests[] = {
@@ -385,10 +393,11 @@ static void drm_test_connector_hdmi_init_type_invalid(struct kunit *test)
ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
&dummy_funcs,
connector_type,
&priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_LT(test, ret, 0);
}
static const unsigned int drm_connector_hdmi_init_type_invalid_tests[] = {
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index 3ecae50ef47f..333c81b8cf4f 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -147,10 +147,11 @@ static const struct drm_connector_funcs dummy_connector_funcs = {
};
static
struct drm_atomic_helper_connector_hdmi_priv *
drm_atomic_helper_connector_hdmi_init(struct kunit *test,
+ unsigned int formats,
unsigned int max_bpc)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector *conn;
struct drm_encoder *enc;
@@ -190,10 +191,11 @@ drm_atomic_helper_connector_hdmi_init(struct kunit *test,
conn = &priv->connector;
ret = drmm_connector_hdmi_init(drm, conn,
&dummy_connector_funcs,
DRM_MODE_CONNECTOR_HDMIA,
NULL,
+ formats,
max_bpc);
KUNIT_ASSERT_EQ(test, ret, 0);
drm_connector_helper_add(conn, &dummy_connector_helper_funcs);
drm_connector_attach_encoder(conn, enc);
@@ -225,11 +227,13 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
struct drm_connector *conn;
struct drm_device *drm;
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
@@ -292,11 +296,13 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
struct drm_connector *conn;
struct drm_device *drm;
struct drm_crtc *crtc;
int ret;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
@@ -361,11 +367,13 @@ static void drm_test_check_bpc_8_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 8);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 8);
@@ -383,11 +391,13 @@ static void drm_test_check_bpc_10_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 10);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 10);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 10);
@@ -405,11 +415,13 @@ static void drm_test_check_bpc_12_value(struct kunit *test)
{
struct drm_atomic_helper_connector_hdmi_priv *priv;
struct drm_connector_state *conn_state;
struct drm_connector *conn;
- priv = drm_atomic_helper_connector_hdmi_init(test, 12);
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 12);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
KUNIT_EXPECT_EQ(test, conn_state->max_bpc, 12);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index d4d2ae15bc1e..29883e6f8e50 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -366,10 +366,13 @@ enum drm_panel_orientation {
DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,
DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
};
+const char *
+drm_hdmi_connector_get_output_format_name(enum hdmi_colorspace fmt);
+
/**
* struct drm_monitor_range_info - Panel's Monitor range in EDID for
* &drm_display_info
*
* This struct is used to store a frequency range supported by panel
@@ -1039,10 +1042,15 @@ struct drm_connector_state {
struct {
/**
* @output_bpc: Bits per color channel to output.
*/
unsigned int output_bpc;
+
+ /**
+ * @output_format: Pixel format to output in.
+ */
+ enum hdmi_colorspace output_format;
} hdmi;
};
/**
* struct drm_connector_funcs - control connectors on a given device
@@ -1900,10 +1908,21 @@ struct drm_connector {
*/
struct llist_node free_node;
/** @hdr_sink_metadata: HDR Metadata Information read from sink */
struct hdr_sink_metadata hdr_sink_metadata;
+
+ /**
+ * @hdmi: HDMI-related variable and properties.
+ */
+ struct {
+ /**
+ * @supported_formats: Bitmask of @hdmi_colorspace
+ * supported by the controller.
+ */
+ unsigned long supported_formats;
+ } hdmi;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
int drm_connector_init(struct drm_device *dev,
@@ -1923,10 +1942,11 @@ int drmm_connector_init(struct drm_device *dev,
int drmm_connector_hdmi_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type,
struct i2c_adapter *ddc,
+ unsigned long supported_formats,
unsigned int max_bpc);
void drm_connector_attach_edid_property(struct drm_connector *connector);
int drm_connector_register(struct drm_connector *connector);
void drm_connector_unregister(struct drm_connector *connector);
int drm_connector_attach_encoder(struct drm_connector *connector,
--
2.45.0
A lot of HDMI drivers have some variation of the formula to calculate
the TMDS character rate from a mode, but few of them actually take all
parameters into account.
Let's create a helper to provide that rate taking all parameters into
account.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_helper.c | 57 +++++++++++++++++++++++++++++++
include/drm/display/drm_hdmi_helper.h | 4 +++
2 files changed, 61 insertions(+)
diff --git a/drivers/gpu/drm/display/drm_hdmi_helper.c b/drivers/gpu/drm/display/drm_hdmi_helper.c
index faf5e9efa7d3..679eb3e81393 100644
--- a/drivers/gpu/drm/display/drm_hdmi_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_helper.c
@@ -193,5 +193,62 @@ void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame,
}
frame->itc = conn_state->content_type != DRM_MODE_CONTENT_TYPE_NO_DATA;
}
EXPORT_SYMBOL(drm_hdmi_avi_infoframe_content_type);
+
+/**
+ * drm_hdmi_compute_mode_clock() - Computes the TMDS Character Rate
+ * @mode: Display mode to compute the clock for
+ * @bpc: Bits per character
+ * @fmt: Output Pixel Format used
+ *
+ * Returns the TMDS Character Rate for a given mode, bpc count and output format.
+ *
+ * RETURNS:
+ * The TMDS Character Rate, in Hertz, or 0 on error.
+ */
+unsigned long long
+drm_hdmi_compute_mode_clock(const struct drm_display_mode *mode,
+ unsigned int bpc, enum hdmi_colorspace fmt)
+{
+ unsigned long long clock = mode->clock * 1000ULL;
+ unsigned int vic = drm_match_cea_mode(mode);
+
+ /*
+ * CTA-861-G Spec, section 5.4 - Color Coding and Quantization
+ * mandates that VIC 1 always uses 8 bpc.
+ */
+ if (vic == 1 && bpc != 8)
+ return 0;
+
+ if (fmt == HDMI_COLORSPACE_YUV422) {
+ /*
+ * HDMI 1.4b Spec, section 6.2.3 - Pixel Encoding Requirements
+ * specifies that YUV422 is 36-bit only.
+ */
+ if (bpc != 12)
+ return 0;
+
+ /*
+ * HDMI 1.0 Spec, section 6.5 - Pixel Encoding
+ * specifies that YUV422 requires two 12-bits components per
+ * pixel clock, which is equivalent in our calculation to three
+ * 8-bits components
+ */
+ bpc = 8;
+ }
+
+ /*
+ * HDMI 2.0 Spec, Section 7.1 - YCbCr 4:2:0 Pixel Encoding
+ * specifies that YUV420 encoding is carried at a TMDS Character Rate
+ * equal to half the pixel clock rate.
+ */
+ if (fmt == HDMI_COLORSPACE_YUV420)
+ clock = clock / 2;
+
+ if (mode->flags & DRM_MODE_FLAG_DBLCLK)
+ clock = clock * 2;
+
+ return DIV_ROUND_CLOSEST_ULL(clock * bpc, 8);
+}
+EXPORT_SYMBOL(drm_hdmi_compute_mode_clock);
diff --git a/include/drm/display/drm_hdmi_helper.h b/include/drm/display/drm_hdmi_helper.h
index 76d234826e22..57e3b18c15ec 100644
--- a/include/drm/display/drm_hdmi_helper.h
+++ b/include/drm/display/drm_hdmi_helper.h
@@ -22,6 +22,10 @@ drm_hdmi_infoframe_set_hdr_metadata(struct hdmi_drm_infoframe *frame,
const struct drm_connector_state *conn_state);
void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame,
const struct drm_connector_state *conn_state);
+unsigned long long
+drm_hdmi_compute_mode_clock(const struct drm_display_mode *mode,
+ unsigned int bpc, enum hdmi_colorspace fmt);
+
#endif
--
2.45.0
Now that we have all the infrastructure needed, we can add some code
that will, for a given connector state and mode, compute the best output
format and bpc.
The algorithm is equivalent to the one already found in i915 and vc4.
Cc: Ville Syrjälä <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/display/drm_hdmi_state_helper.c | 199 ++++++++++++++++++++-
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 25 ++-
2 files changed, 212 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
index 063421835dba..f20dcfecb6b8 100644
--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
@@ -1,9 +1,11 @@
// SPDX-License-Identifier: MIT
#include <drm/drm_atomic.h>
#include <drm/drm_connector.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_print.h>
#include <drm/display/drm_hdmi_helper.h>
#include <drm/display/drm_hdmi_state_helper.h>
/**
@@ -46,10 +48,112 @@ connector_state_get_mode(const struct drm_connector_state *conn_state)
return NULL;
return &crtc_state->mode;
}
+static bool
+sink_supports_format_bpc(const struct drm_connector *connector,
+ const struct drm_display_info *info,
+ const struct drm_display_mode *mode,
+ unsigned int format, unsigned int bpc)
+{
+ struct drm_device *dev = connector->dev;
+ u8 vic = drm_match_cea_mode(mode);
+
+ /*
+ * CTA-861-F, section 5.4 - Color Coding & Quantization states
+ * that the bpc must be 8, 10, 12 or 16 except for the default
+ * 640x480 VIC1 where the value must be 8.
+ *
+ * The definition of default here is ambiguous but the spec
+ * refers to VIC1 being the default timing in several occasions
+ * so our understanding is that for the default timing (ie,
+ * VIC1), the bpc must be 8.
+ */
+ if (vic == 1 && bpc != 8) {
+ drm_dbg_kms(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
+ return false;
+ }
+
+ if (!info->is_hdmi &&
+ (format != HDMI_COLORSPACE_RGB || bpc != 8)) {
+ drm_dbg_kms(dev, "DVI Monitors require an RGB output at 8 bpc\n");
+ return false;
+ }
+
+ if (!(connector->hdmi.supported_formats & BIT(format))) {
+ drm_dbg_kms(dev, "%s format unsupported by the connector.\n",
+ drm_hdmi_connector_get_output_format_name(format));
+ return false;
+ }
+
+ switch (format) {
+ case HDMI_COLORSPACE_RGB:
+ drm_dbg_kms(dev, "RGB Format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444)) {
+ drm_dbg_kms(dev, "Sink doesn't support RGB.\n");
+ return false;
+ }
+
+ if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
+ drm_dbg_kms(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
+ return false;
+ }
+
+ if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
+ drm_dbg_kms(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
+ return false;
+ }
+
+ drm_dbg_kms(dev, "RGB format supported in that configuration.\n");
+
+ return true;
+
+ case HDMI_COLORSPACE_YUV422:
+ drm_dbg_kms(dev, "YUV422 format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
+ drm_dbg_kms(dev, "Sink doesn't support YUV422.\n");
+ return false;
+ }
+
+ if (bpc != 12) {
+ drm_dbg_kms(dev, "YUV422 only supports 12 bpc.\n");
+ return false;
+ }
+
+ drm_dbg_kms(dev, "YUV422 format supported in that configuration.\n");
+
+ return true;
+
+ case HDMI_COLORSPACE_YUV444:
+ drm_dbg_kms(dev, "YUV444 format, checking the constraints.\n");
+
+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) {
+ drm_dbg_kms(dev, "Sink doesn't support YUV444.\n");
+ return false;
+ }
+
+ if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) {
+ drm_dbg_kms(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
+ return false;
+ }
+
+ if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) {
+ drm_dbg_kms(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
+ return false;
+ }
+
+ drm_dbg_kms(dev, "YUV444 format supported in that configuration.\n");
+
+ return true;
+ }
+
+ return false;
+}
+
static enum drm_mode_status
hdmi_clock_valid(const struct drm_connector *connector,
const struct drm_display_mode *mode,
unsigned long long clock)
{
@@ -90,10 +194,101 @@ hdmi_compute_clock(const struct drm_connector *connector,
conn_state->hdmi.tmds_char_rate = clock;
return 0;
}
+static bool
+hdmi_try_format_bpc(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state,
+ const struct drm_display_mode *mode,
+ unsigned int bpc, enum hdmi_colorspace fmt)
+{
+ const struct drm_display_info *info = &connector->display_info;
+ struct drm_device *dev = connector->dev;
+ int ret;
+
+ drm_dbg_kms(dev, "Trying %s output format\n",
+ drm_hdmi_connector_get_output_format_name(fmt));
+
+ if (!sink_supports_format_bpc(connector, info, mode, fmt, bpc)) {
+ drm_dbg_kms(dev, "%s output format not supported with %u bpc\n",
+ drm_hdmi_connector_get_output_format_name(fmt),
+ bpc);
+ return false;
+ }
+
+ ret = hdmi_compute_clock(connector, conn_state, mode, bpc, fmt);
+ if (ret) {
+ drm_dbg_kms(dev, "Couldn't compute clock for %s output format and %u bpc\n",
+ drm_hdmi_connector_get_output_format_name(fmt),
+ bpc);
+ return false;
+ }
+
+ drm_dbg_kms(dev, "%s output format supported with %u (TMDS char rate: %llu Hz)\n",
+ drm_hdmi_connector_get_output_format_name(fmt),
+ bpc, conn_state->hdmi.tmds_char_rate);
+
+ return true;
+}
+
+static int
+hdmi_compute_format(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state,
+ const struct drm_display_mode *mode,
+ unsigned int bpc)
+{
+ struct drm_device *dev = connector->dev;
+
+ /*
+ * TODO: Add support for YCbCr420 output for HDMI 2.0 capable
+ * devices, for modes that only support YCbCr420.
+ */
+ if (hdmi_try_format_bpc(connector, conn_state, mode, bpc, HDMI_COLORSPACE_RGB)) {
+ conn_state->hdmi.output_format = HDMI_COLORSPACE_RGB;
+ return 0;
+ }
+
+ drm_dbg_kms(dev, "Failed. No Format Supported for that bpc count.\n");
+
+ return -EINVAL;
+}
+
+static int
+hdmi_compute_config(const struct drm_connector *connector,
+ struct drm_connector_state *conn_state,
+ const struct drm_display_mode *mode)
+{
+ struct drm_device *dev = connector->dev;
+ unsigned int max_bpc = clamp_t(unsigned int,
+ conn_state->max_bpc,
+ 8, connector->max_bpc);
+ unsigned int bpc;
+ int ret;
+
+ for (bpc = max_bpc; bpc >= 8; bpc -= 2) {
+ drm_dbg_kms(dev, "Trying with a %d bpc output\n", bpc);
+
+ ret = hdmi_compute_format(connector, conn_state, mode, bpc);
+ if (ret)
+ continue;
+
+ conn_state->hdmi.output_bpc = bpc;
+
+ drm_dbg_kms(dev,
+ "Mode %ux%u @ %uHz: Found configuration: bpc: %u, fmt: %s, clock: %llu\n",
+ mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
+ conn_state->hdmi.output_bpc,
+ drm_hdmi_connector_get_output_format_name(conn_state->hdmi.output_format),
+ conn_state->hdmi.tmds_char_rate);
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
/**
* drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
* @connector: DRM Connector
* @state: the DRM State object
*
@@ -113,13 +308,11 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector,
drm_atomic_get_new_connector_state(state, connector);
const struct drm_display_mode *mode =
connector_state_get_mode(new_conn_state);
int ret;
- ret = hdmi_compute_clock(connector, new_conn_state, mode,
- new_conn_state->hdmi.output_bpc,
- new_conn_state->hdmi.output_format);
+ ret = hdmi_compute_config(connector, new_conn_state, mode);
if (ret)
return ret;
if (old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||
old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index ead998a691e7..a49a544d7b49 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -70,13 +70,10 @@ static int light_up_connector(struct kunit *test,
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
conn_state = drm_atomic_get_connector_state(state, connector);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
- conn_state->hdmi.output_bpc = connector->max_bpc;
- conn_state->hdmi.output_format = HDMI_COLORSPACE_RGB;
-
ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
KUNIT_EXPECT_EQ(test, ret, 0);
crtc_state = drm_atomic_get_crtc_state(state, crtc);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
@@ -251,14 +248,19 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
priv = drm_atomic_helper_connector_hdmi_init(test,
BIT(HDMI_COLORSPACE_RGB),
10);
KUNIT_ASSERT_NOT_NULL(test, priv);
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
- conn = &priv->connector;
preferred = find_preferred_mode(conn);
KUNIT_ASSERT_NOT_NULL(test, preferred);
drm = &priv->drm;
crtc = priv->crtc;
@@ -272,15 +274,15 @@ static void drm_test_check_output_bpc_crtc_mode_changed(struct kunit *test)
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, new_conn_state);
old_conn_state = drm_atomic_get_old_connector_state(state, conn);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, old_conn_state);
- new_conn_state->hdmi.output_bpc = 8;
+ new_conn_state->max_requested_bpc = 8;
KUNIT_ASSERT_NE(test,
- old_conn_state->hdmi.output_bpc,
- new_conn_state->hdmi.output_bpc);
+ old_conn_state->max_requested_bpc,
+ new_conn_state->max_requested_bpc);
ret = drm_atomic_check_only(state);
KUNIT_ASSERT_EQ(test, ret, 0);
old_conn_state = drm_atomic_get_old_connector_state(state, conn);
@@ -320,14 +322,19 @@ static void drm_test_check_output_bpc_crtc_mode_not_changed(struct kunit *test)
priv = drm_atomic_helper_connector_hdmi_init(test,
BIT(HDMI_COLORSPACE_RGB),
10);
KUNIT_ASSERT_NOT_NULL(test, priv);
+ conn = &priv->connector;
+ ret = set_connector_edid(test, conn,
+ test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz,
+ ARRAY_SIZE(test_edid_hdmi_1080p_rgb_yuv_dc_max_200mhz));
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
ctx = drm_kunit_helper_acquire_ctx_alloc(test);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
- conn = &priv->connector;
preferred = find_preferred_mode(conn);
KUNIT_ASSERT_NOT_NULL(test, preferred);
drm = &priv->drm;
crtc = priv->crtc;
@@ -670,11 +677,11 @@ static void drm_test_check_format_value(struct kunit *test)
8);
KUNIT_ASSERT_NOT_NULL(test, priv);
conn = &priv->connector;
conn_state = conn->state;
- KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
+ KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, 0);
}
/*
* Test that the value of the output format property out of reset is set
* to 0, and will be computed at atomic_check time.
--
2.45.0
The previous commit added the infrastructure to the connector state to
track what RGB Quantization should be used in a given state for an HDMI
connector.
Let's add some kunit tests to make sure it works as expected.
Reviewed-by: Dave Stevenson <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 355 +++++++++++++++++++++
1 file changed, 355 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
index ff9a882201eb..da5c3d9a80bb 100644
--- a/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
+++ b/drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c
@@ -353,10 +353,354 @@ static void drm_test_check_broadcast_rgb_crtc_mode_not_changed(struct kunit *tes
crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
KUNIT_EXPECT_FALSE(test, crtc_state->mode_changed);
}
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to auto with a mode that isn't the
+ * VIC-1 mode, we will get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_auto_cea_mode(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_AUTO);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_limited_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to auto with a VIC-1 mode, we will get
+ * a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_auto_cea_mode_vic_1(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *mode;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ drm = &priv->drm;
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, mode, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_AUTO);
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_EXPECT_FALSE(test, conn_state->hdmi.is_limited_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to full with a mode that isn't the
+ * VIC-1 mode, we will get a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_full_cea_mode(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_FULL;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_FULL);
+
+ KUNIT_EXPECT_FALSE(test, conn_state->hdmi.is_limited_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to full with a VIC-1 mode, we will get
+ * a full RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_full_cea_mode_vic_1(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *mode;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ drm = &priv->drm;
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, mode, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_FULL;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_FULL);
+
+ KUNIT_EXPECT_FALSE(test, conn_state->hdmi.is_limited_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to limited with a mode that isn't the
+ * VIC-1 mode, we will get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_limited_cea_mode(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *preferred;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ preferred = find_preferred_mode(conn);
+ KUNIT_ASSERT_NOT_NULL(test, preferred);
+ KUNIT_ASSERT_NE(test, drm_match_cea_mode(preferred), 1);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, preferred, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_LIMITED;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_LIMITED);
+
+ KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_limited_range);
+}
+
+/*
+ * Test that for an HDMI connector, with an HDMI monitor, if the
+ * Broadcast RGB property is set to limited with a VIC-1 mode, we will
+ * get a limited RGB Quantization Range.
+ */
+static void drm_test_check_broadcast_rgb_limited_cea_mode_vic_1(struct kunit *test)
+{
+ struct drm_atomic_helper_connector_hdmi_priv *priv;
+ struct drm_modeset_acquire_ctx *ctx;
+ struct drm_connector_state *conn_state;
+ struct drm_atomic_state *state;
+ struct drm_display_mode *mode;
+ struct drm_connector *conn;
+ struct drm_device *drm;
+ struct drm_crtc *crtc;
+ int ret;
+
+ priv = drm_atomic_helper_connector_hdmi_init(test,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_ASSERT_NOT_NULL(test, priv);
+
+ drm = &priv->drm;
+ conn = &priv->connector;
+ KUNIT_ASSERT_TRUE(test, conn->display_info.is_hdmi);
+
+ ctx = drm_kunit_helper_acquire_ctx_alloc(test);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ mode = drm_display_mode_from_cea_vic(drm, 1);
+ KUNIT_ASSERT_NOT_NULL(test, mode);
+
+ drm = &priv->drm;
+ crtc = priv->crtc;
+ ret = light_up_connector(test, drm, crtc, conn, mode, ctx);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ state = drm_kunit_helper_atomic_state_alloc(test, drm, ctx);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, state);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_LIMITED;
+
+ ret = drm_atomic_check_only(state);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ conn_state = drm_atomic_get_connector_state(state, conn);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
+
+ KUNIT_ASSERT_EQ(test,
+ conn_state->hdmi.broadcast_rgb,
+ DRM_HDMI_BROADCAST_RGB_LIMITED);
+
+ KUNIT_EXPECT_TRUE(test, conn_state->hdmi.is_limited_range);
+}
+
/*
* Test that if we change the maximum bpc property to a different value,
* we trigger a mode change on the connector's CRTC, which will in turn
* disable/enable the connector.
*/
@@ -1192,10 +1536,21 @@ static void drm_test_check_output_bpc_format_display_8bpc_only(struct kunit *tes
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_bpc, 8);
KUNIT_EXPECT_EQ(test, conn_state->hdmi.output_format, HDMI_COLORSPACE_RGB);
}
static struct kunit_case drm_atomic_helper_connector_hdmi_check_tests[] = {
+ KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_auto_cea_mode_vic_1),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_full_cea_mode),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_full_cea_mode_vic_1),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_limited_cea_mode),
+ KUNIT_CASE(drm_test_check_broadcast_rgb_limited_cea_mode_vic_1),
+ /*
+ * TODO: When we'll have YUV output support, we need to check
+ * that the limited range is always set to limited no matter
+ * what the value of Broadcast RGB is.
+ */
KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_changed),
KUNIT_CASE(drm_test_check_broadcast_rgb_crtc_mode_not_changed),
KUNIT_CASE(drm_test_check_hdmi_funcs_reject_rate),
KUNIT_CASE(drm_test_check_max_tmds_rate_bpc_fallback),
KUNIT_CASE(drm_test_check_max_tmds_rate_format_fallback),
--
2.45.0
Now that we have a plane create helper for kunit mocked drivers, let's
convert to it in vc4.
Reviewed-by: Maíra Canal <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/vc4/tests/vc4_mock_plane.c | 34 +++++++-----------------------
1 file changed, 8 insertions(+), 26 deletions(-)
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
index 973f5f929097..14357db82238 100644
--- a/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
@@ -1,43 +1,25 @@
// SPDX-License-Identifier: GPL-2.0
-#include <drm/drm_atomic_state_helper.h>
-#include <drm/drm_fourcc.h>
-#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_kunit_helpers.h>
#include <drm/drm_plane.h>
#include <kunit/test.h>
#include "vc4_mock.h"
-static const struct drm_plane_helper_funcs vc4_dummy_plane_helper_funcs = {
-};
-
-static const struct drm_plane_funcs vc4_dummy_plane_funcs = {
- .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
- .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
- .reset = drm_atomic_helper_plane_reset,
-};
-
-static const uint32_t vc4_dummy_plane_formats[] = {
- DRM_FORMAT_XRGB8888,
-};
-
struct drm_plane *vc4_dummy_plane(struct kunit *test, struct drm_device *drm,
enum drm_plane_type type)
{
struct drm_plane *plane;
- plane = __drmm_universal_plane_alloc(drm, sizeof(struct drm_plane), 0,
- 0,
- &vc4_dummy_plane_funcs,
- vc4_dummy_plane_formats,
- ARRAY_SIZE(vc4_dummy_plane_formats),
- NULL,
- DRM_PLANE_TYPE_PRIMARY,
- NULL);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane);
+ KUNIT_ASSERT_EQ(test, type, DRM_PLANE_TYPE_PRIMARY);
- drm_plane_helper_add(plane, &vc4_dummy_plane_helper_funcs);
+ plane = drm_kunit_helper_create_primary_plane(test, drm,
+ NULL,
+ NULL,
+ NULL, 0,
+ NULL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane);
return plane;
}
--
2.45.0
The previous patch added the generation of the infoframes matching an
HDMI connector state. Let's add a few tests to make sure it works as
expected.
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/tests/drm_connector_test.c | 219 +++++++++++++++++++++++++++++
1 file changed, 219 insertions(+)
diff --git a/drivers/gpu/drm/tests/drm_connector_test.c b/drivers/gpu/drm/tests/drm_connector_test.c
index 4e3c2c7dfaf2..9ea228266de2 100644
--- a/drivers/gpu/drm/tests/drm_connector_test.c
+++ b/drivers/gpu/drm/tests/drm_connector_test.c
@@ -219,10 +219,221 @@ static void drm_test_connector_hdmi_init_null_ddc(struct kunit *test)
BIT(HDMI_COLORSPACE_RGB),
8);
KUNIT_EXPECT_EQ(test, ret, 0);
}
+/*
+ * Test that the registration of an HDMI connector with a NULL vendor
+ * fails.
+ */
+static void drm_test_connector_hdmi_init_null_vendor(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ NULL, "Product",
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of an HDMI connector with a NULL product
+ * fails.
+ */
+static void drm_test_connector_hdmi_init_null_product(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ int ret;
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", NULL,
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector with a valid, shorter than
+ * the max length, product name succeeds, and is stored padded with 0.
+ */
+static void drm_test_connector_hdmi_init_product_valid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const unsigned char expected_product[DRM_CONNECTOR_HDMI_PRODUCT_LEN] = {
+ 'P', 'r', 'o', 'd',
+ };
+ const char *product_name = "Prod";
+ int ret;
+
+ KUNIT_ASSERT_LT(test, strlen(product_name), DRM_CONNECTOR_HDMI_PRODUCT_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", product_name,
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_MEMEQ(test,
+ priv->connector.hdmi.product,
+ expected_product,
+ sizeof(priv->connector.hdmi.product));
+}
+
+/*
+ * Test that the registration of a connector with a valid, at max
+ * length, product name succeeds, and is stored padded without any
+ * trailing \0.
+ */
+static void drm_test_connector_hdmi_init_product_length_exact(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const unsigned char expected_product[DRM_CONNECTOR_HDMI_PRODUCT_LEN] = {
+ 'P', 'r', 'o', 'd', 'u', 'c', 't',
+ 'P', 'r', 'o', 'd', 'u', 'c', 't',
+ 'P', 'r',
+ };
+ const char *product_name = "ProductProductPr";
+ int ret;
+
+ KUNIT_ASSERT_EQ(test, strlen(product_name), DRM_CONNECTOR_HDMI_PRODUCT_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", product_name,
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_MEMEQ(test,
+ priv->connector.hdmi.product,
+ expected_product,
+ sizeof(priv->connector.hdmi.product));
+}
+
+/*
+ * Test that the registration of a connector with a product name larger
+ * than the maximum length fails.
+ */
+static void drm_test_connector_hdmi_init_product_length_too_long(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const char *product_name = "ProductProductProduct";
+ int ret;
+
+ KUNIT_ASSERT_GT(test, strlen(product_name), DRM_CONNECTOR_HDMI_PRODUCT_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ "Vendor", product_name,
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
+/*
+ * Test that the registration of a connector with a vendor name smaller
+ * than the maximum length succeeds, and is stored padded with zeros.
+ */
+static void drm_test_connector_hdmi_init_vendor_valid(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const char expected_vendor[DRM_CONNECTOR_HDMI_VENDOR_LEN] = {
+ 'V', 'e', 'n', 'd',
+ };
+ const char *vendor_name = "Vend";
+ int ret;
+
+ KUNIT_ASSERT_LT(test, strlen(vendor_name), DRM_CONNECTOR_HDMI_VENDOR_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ vendor_name, "Product",
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_MEMEQ(test,
+ priv->connector.hdmi.vendor,
+ expected_vendor,
+ sizeof(priv->connector.hdmi.vendor));
+}
+
+/*
+ * Test that the registration of a connector with a vendor name at the
+ * maximum length succeeds, and is stored padded without the trailing
+ * zero.
+ */
+static void drm_test_connector_hdmi_init_vendor_length_exact(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const char expected_vendor[DRM_CONNECTOR_HDMI_VENDOR_LEN] = {
+ 'V', 'e', 'n', 'd', 'o', 'r',
+ 'V', 'e',
+ };
+ const char *vendor_name = "VendorVe";
+ int ret;
+
+ KUNIT_ASSERT_EQ(test, strlen(vendor_name), DRM_CONNECTOR_HDMI_VENDOR_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ vendor_name, "Product",
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_MEMEQ(test,
+ priv->connector.hdmi.vendor,
+ expected_vendor,
+ sizeof(priv->connector.hdmi.vendor));
+}
+
+/*
+ * Test that the registration of a connector with a vendor name larger
+ * than the maximum length fails.
+ */
+static void drm_test_connector_hdmi_init_vendor_length_too_long(struct kunit *test)
+{
+ struct drm_connector_init_priv *priv = test->priv;
+ const char *vendor_name = "VendorVendor";
+ int ret;
+
+ KUNIT_ASSERT_GT(test, strlen(vendor_name), DRM_CONNECTOR_HDMI_VENDOR_LEN);
+
+ ret = drmm_connector_hdmi_init(&priv->drm, &priv->connector,
+ vendor_name, "Product",
+ &dummy_funcs,
+ &dummy_hdmi_funcs,
+ DRM_MODE_CONNECTOR_HDMIA,
+ &priv->ddc,
+ BIT(HDMI_COLORSPACE_RGB),
+ 8);
+ KUNIT_EXPECT_LT(test, ret, 0);
+}
+
/*
* Test that the registration of a connector with an invalid maximum bpc
* count fails.
*/
static void drm_test_connector_hdmi_init_bpc_invalid(struct kunit *test)
@@ -499,10 +710,18 @@ static struct kunit_case drmm_connector_hdmi_init_tests[] = {
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_invalid),
KUNIT_CASE(drm_test_connector_hdmi_init_bpc_null),
KUNIT_CASE(drm_test_connector_hdmi_init_formats_empty),
KUNIT_CASE(drm_test_connector_hdmi_init_formats_no_rgb),
KUNIT_CASE(drm_test_connector_hdmi_init_null_ddc),
+ KUNIT_CASE(drm_test_connector_hdmi_init_null_product),
+ KUNIT_CASE(drm_test_connector_hdmi_init_null_vendor),
+ KUNIT_CASE(drm_test_connector_hdmi_init_product_length_exact),
+ KUNIT_CASE(drm_test_connector_hdmi_init_product_length_too_long),
+ KUNIT_CASE(drm_test_connector_hdmi_init_product_valid),
+ KUNIT_CASE(drm_test_connector_hdmi_init_vendor_length_exact),
+ KUNIT_CASE(drm_test_connector_hdmi_init_vendor_length_too_long),
+ KUNIT_CASE(drm_test_connector_hdmi_init_vendor_valid),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_valid,
drm_connector_hdmi_init_type_valid_gen_params),
KUNIT_CASE_PARAM(drm_test_connector_hdmi_init_type_invalid,
drm_connector_hdmi_init_type_invalid_gen_params),
{ }
--
2.45.0
The vc4_dummy_plane structure was introduced as a mean to add
mock-specific fields.
However, we never really used it and it's still strictly equivalent to
vc4_plane (which is in the same situation vs drm_plane), so we can
simply remove the vc4_dummy_plane structure and make the mock code
cleaner.
Reviewed-by: Maíra Canal <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
---
drivers/gpu/drm/vc4/tests/vc4_mock.c | 6 ++----
drivers/gpu/drm/vc4/tests/vc4_mock.h | 9 ++-------
drivers/gpu/drm/vc4/tests/vc4_mock_plane.c | 14 +++++---------
3 files changed, 9 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock.c b/drivers/gpu/drm/vc4/tests/vc4_mock.c
index becb3dbaa548..0731a7d85d7a 100644
--- a/drivers/gpu/drm/vc4/tests/vc4_mock.c
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock.c
@@ -107,20 +107,18 @@ static const struct vc4_mock_desc vc5_mock =
);
static int __build_one_pipe(struct kunit *test, struct drm_device *drm,
const struct vc4_mock_pipe_desc *pipe)
{
- struct vc4_dummy_plane *dummy_plane;
struct drm_plane *plane;
struct vc4_dummy_crtc *dummy_crtc;
struct drm_crtc *crtc;
unsigned int i;
- dummy_plane = vc4_dummy_plane(test, drm, DRM_PLANE_TYPE_PRIMARY);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_plane);
+ plane = vc4_dummy_plane(test, drm, DRM_PLANE_TYPE_PRIMARY);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane);
- plane = &dummy_plane->plane.base;
dummy_crtc = vc4_mock_pv(test, drm, plane, pipe->data);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_crtc);
crtc = &dummy_crtc->crtc.base;
for (i = 0; i < pipe->noutputs; i++) {
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock.h b/drivers/gpu/drm/vc4/tests/vc4_mock.h
index 2d0b339bd9f3..002b6218960c 100644
--- a/drivers/gpu/drm/vc4/tests/vc4_mock.h
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock.h
@@ -19,17 +19,12 @@ struct drm_crtc *vc4_find_crtc_for_encoder(struct kunit *test,
return crtc;
return NULL;
}
-struct vc4_dummy_plane {
- struct vc4_plane plane;
-};
-
-struct vc4_dummy_plane *vc4_dummy_plane(struct kunit *test,
- struct drm_device *drm,
- enum drm_plane_type type);
+struct drm_plane *vc4_dummy_plane(struct kunit *test, struct drm_device *drm,
+ enum drm_plane_type type);
struct vc4_dummy_crtc {
struct vc4_crtc crtc;
};
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
index 62b18f5f41db..973f5f929097 100644
--- a/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
@@ -20,28 +20,24 @@ static const struct drm_plane_funcs vc4_dummy_plane_funcs = {
static const uint32_t vc4_dummy_plane_formats[] = {
DRM_FORMAT_XRGB8888,
};
-struct vc4_dummy_plane *vc4_dummy_plane(struct kunit *test,
- struct drm_device *drm,
- enum drm_plane_type type)
+struct drm_plane *vc4_dummy_plane(struct kunit *test, struct drm_device *drm,
+ enum drm_plane_type type)
{
- struct vc4_dummy_plane *dummy_plane;
struct drm_plane *plane;
- dummy_plane = drmm_universal_plane_alloc(drm,
- struct vc4_dummy_plane, plane.base,
+ plane = __drmm_universal_plane_alloc(drm, sizeof(struct drm_plane), 0,
0,
&vc4_dummy_plane_funcs,
vc4_dummy_plane_formats,
ARRAY_SIZE(vc4_dummy_plane_formats),
NULL,
DRM_PLANE_TYPE_PRIMARY,
NULL);
- KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_plane);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane);
- plane = &dummy_plane->plane.base;
drm_plane_helper_add(plane, &vc4_dummy_plane_helper_funcs);
- return dummy_plane;
+ return plane;
}
--
2.45.0
Hi Maxime，
在 2024-05-07 21:17:33，"Maxime Ripard" <[email protected]> 写道：
>Now that we have all the infrastructure needed, we can add some code
>that will, for a given connector state and mode, compute the best output
>format and bpc.
>
>The algorithm is equivalent to the one already found in i915 and vc4.
>
>Cc: Ville Syrjälä <[email protected]>
>Signed-off-by: Maxime Ripard <[email protected]>
>---
> drivers/gpu/drm/display/drm_hdmi_state_helper.c | 199 ++++++++++++++++++++-
> drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 25 ++-
> 2 files changed, 212 insertions(+), 12 deletions(-)
>
>diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
>index 063421835dba..f20dcfecb6b8 100644
>--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
>+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
>@@ -1,9 +1,11 @@
> // SPDX-License-Identifier: MIT
>
> #include <drm/drm_atomic.h>
> #include <drm/drm_connector.h>
>+#include <drm/drm_edid.h>
>+#include <drm/drm_print.h>
>
> #include <drm/display/drm_hdmi_helper.h>
> #include <drm/display/drm_hdmi_state_helper.h>
>
> /**
>@@ -46,10 +48,112 @@ connector_state_get_mode(const struct drm_connector_state *conn_state)
> return NULL;
>
> return &crtc_state->mode;
> }
>
>+static bool
>+sink_supports_format_bpc(const struct drm_connector *connector,
>+ const struct drm_display_info *info,
>+ const struct drm_display_mode *mode,
>+ unsigned int format, unsigned int bpc)
>+{
>+ struct drm_device *dev = connector->dev;
>+ u8 vic = drm_match_cea_mode(mode);
>+
>+ /*
>+ * CTA-861-F, section 5.4 - Color Coding & Quantization states
>+ * that the bpc must be 8, 10, 12 or 16 except for the default
>+ * 640x480 VIC1 where the value must be 8.
>+ *
>+ * The definition of default here is ambiguous but the spec
>+ * refers to VIC1 being the default timing in several occasions
>+ * so our understanding is that for the default timing (ie,
>+ * VIC1), the bpc must be 8.
>+ */
>+ if (vic == 1 && bpc != 8) {
>+ drm_dbg_kms(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
>+ return false;
>+ }
>+
>+ if (!info->is_hdmi &&
>+ (format != HDMI_COLORSPACE_RGB || bpc != 8)) {
>+ drm_dbg_kms(dev, "DVI Monitors require an RGB output at 8 bpc\n");
>+ return false;
>+ }
>+
>+ if (!(connector->hdmi.supported_formats & BIT(format))) {
>+ drm_dbg_kms(dev, "%s format unsupported by the connector.\n",
>+ drm_hdmi_connector_get_output_format_name(format));
>+ return false;
>+ }
>+
>+ switch (format) {
>+ case HDMI_COLORSPACE_RGB:
>+ drm_dbg_kms(dev, "RGB Format, checking the constraints.\n");
>+
>+ if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444)) {
>+ drm_dbg_kms(dev, "Sink doesn't support RGB.\n");
>+ return false;
>+ }
>+
As I reported in V12, the HDMI output on my rk3036-kylin was lost after apply this series.
This is because there is something wrong with the DDC on my board, the edid read always failed
on first bootup. That means inno_hdmi_connector_get_modes will return 0.
and in function drm_helper_probe_single_connector_modes:
count = drm_helper_probe_get_modes(connector);
if (count == 0 && (connector->status == connector_status_connected ||
connector->status == connector_status_unknown)) {
count = drm_add_modes_noedid(connector, 1024, 768);
/*
* Section 4.2.2.6 (EDID Corruption Detection) of the DP 1.4a
* Link CTS specifies that 640x480 (the official "failsafe"
* mode) needs to be the default if there's no EDID.
*/
if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
drm_set_preferred_mode(connector, 640, 480);
}
drm_add_modes_noedid will not initialize display_info. So the check about display info will always failed here:
[ 4.205368] rockchip-drm display-subsystem: [drm:drm_atomic_check_only] checking (ptrval)
[ 4.205410] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] mode changed
[ 4.205439] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] enable changed
[ 4.205464] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] active changed
[ 4.205490] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] Updating routing for [CONNECTOR:37:HDMI-A-1]
[ 4.205517] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CONNECTOR:37:HDMI-A-1] using [ENCODER:36:TMDS-36] on [CRTC:35:crtc-0]
[ 4.205545] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Trying with a 8 bpc output
[ 4.205575] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Trying RGB output format
[ 4.205670] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] RGB Format, checking the constraints.
[ 4.205696] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Sink doesn't support RGB.
[ 4.205720] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] RGB output format not supported with 8 bpc
[ 4.205747] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Failed. No Format Supported for that bpc count.
[ 4.205772] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CONNECTOR:37:HDMI-A-1] driver check failed
[ 4.205796] rockchip-drm display-subsystem: [drm:drm_atomic_check_only] atomic driver check for (ptrval) failed: -22
My reply for your email in V12[0] was bounced, so I think you didn't read it.
[0]https://patchwork.kernel.org/project/linux-rockchip/patch/[email protected]/
>+ if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {
>+ drm_dbg_kms(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
>+ return false;
>+ }
>+
>+ if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {
>+ drm_dbg_kms(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
>+ return false;
>+ }
>+
>+ drm_dbg_kms(dev, "RGB format supported in that configuration.\n");
>+
>+ return true;
>+
>+ case HDMI_COLORSPACE_YUV422:
>+ drm_dbg_kms(dev, "YUV422 format, checking the constraints.\n");
>+
>+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {
>+ drm_dbg_kms(dev, "Sink doesn't support YUV422.\n");
>+ return false;
>+ }
>+
>+ if (bpc != 12) {
>+ drm_dbg_kms(dev, "YUV422 only supports 12 bpc.\n");
>+ return false;
>+ }
>+
>+ drm_dbg_kms(dev, "YUV422 format supported in that configuration.\n");
>+
>+ return true;
>+
>+ case HDMI_COLORSPACE_YUV444:
>+ drm_dbg_kms(dev, "YUV444 format, checking the constraints.\n");
>+
>+ if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) {
>+ drm_dbg_kms(dev, "Sink doesn't support YUV444.\n");
>+ return false;
>+ }
>+
>+ if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) {
>+ drm_dbg_kms(dev, "10 BPC but sink doesn't support Deep Color 30.\n");
>+ return false;
>+ }
>+
>+ if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) {
>+ drm_dbg_kms(dev, "12 BPC but sink doesn't support Deep Color 36.\n");
>+ return false;
>+ }
>+
>+ drm_dbg_kms(dev, "YUV444 format supported in that configuration.\n");
>+
>+ return true;
>+ }
>+
>+ return false;
>+}
>+
>--
>2.45.0
>
>
>_______________________________________________
>linux-arm-kernel mailing list
>[email protected]
>http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Hi Andy,
On Sun, May 12, 2024 at 04:29:47PM +0800, Andy Yan wrote:
> At 2024-05-07 21:17:45, "Maxime Ripard" <[email protected]> wrote:
> >The new HDMI connector infrastructure allows to remove some boilerplate,
> >especially to generate infoframes. Let's switch to it.
> >
> >Reviewed-by: Heiko Stuebner <[email protected]>
> >Acked-by: Heiko Stuebner <[email protected]>
> >Signed-off-by: Maxime Ripard <[email protected]>
> >---
> > drivers/gpu/drm/rockchip/Kconfig | 3 +
> > drivers/gpu/drm/rockchip/inno_hdmi.c | 153 ++++++++++++---------------------
> > drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c | 3 +
> > 3 files changed, 61 insertions(+), 98 deletions(-)
> >
> >diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
> >index 1bf3e2829cd0..7df875e38517 100644
> >--- a/drivers/gpu/drm/rockchip/Kconfig
> >+++ b/drivers/gpu/drm/rockchip/Kconfig
> >@@ -72,10 +72,13 @@ config ROCKCHIP_DW_MIPI_DSI
> > enable MIPI DSI on RK3288 or RK3399 based SoC, you should
> > select this option.
> >
> > config ROCKCHIP_INNO_HDMI
> > bool "Rockchip specific extensions for Innosilicon HDMI"
> >+ select DRM_DISPLAY_HDMI_HELPER
> >+ select DRM_DISPLAY_HDMI_STATE_HELPER
> >+ select DRM_DISPLAY_HELPER
> > help
> > This selects support for Rockchip SoC specific extensions
> > for the Innosilicon HDMI driver. If you want to enable
> > HDMI on RK3036 based SoC, you should select this option.
> >
> >diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
> >index 3df2cfcf9998..5069403c3b80 100644
> >--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
> >+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
> >@@ -20,10 +20,13 @@
> > #include <drm/drm_edid.h>
> > #include <drm/drm_of.h>
> > #include <drm/drm_probe_helper.h>
> > #include <drm/drm_simple_kms_helper.h>
> >
> >+#include <drm/display/drm_hdmi_helper.h>
> >+#include <drm/display/drm_hdmi_state_helper.h>
> >+
> ......
> >
> > static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
> > {
> > struct drm_connector *connector = &hdmi->connector;
> > struct drm_connector_state *conn_state = connector->state;
> >@@ -359,12 +323,12 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
> > value = v_VIDEO_INPUT_BITS(VIDEO_INPUT_8BITS) |
> > v_VIDEO_OUTPUT_COLOR(0) |
> > v_VIDEO_INPUT_CSP(0);
> > hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
> >
> >- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) {
> >- if (inno_conn_state->rgb_limited_range) {
> >+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_RGB) {
> >+ if (conn_state->hdmi.is_limited_range) {
> > csc_mode = CSC_RGB_0_255_TO_RGB_16_235_8BIT;
> > auto_csc = AUTO_CSC_DISABLE;
> > c0_c2_change = C0_C2_CHANGE_DISABLE;
> > csc_enable = v_CSC_ENABLE;
> >
> >@@ -378,18 +342,18 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
> > v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
> > return 0;
> > }
> > } else {
> > if (inno_conn_state->colorimetry == HDMI_COLORIMETRY_ITU_601) {
> >- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
> >+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_YUV444) {
> > csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
> > auto_csc = AUTO_CSC_DISABLE;
> > c0_c2_change = C0_C2_CHANGE_DISABLE;
> > csc_enable = v_CSC_ENABLE;
> > }
> > } else {
> >- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
> >+ if (conn_state->hdmi.output_format == HDMI_COLORSPACE_YUV444) {
> > csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
> > auto_csc = AUTO_CSC_DISABLE;
> > c0_c2_change = C0_C2_CHANGE_DISABLE;
> > csc_enable = v_CSC_ENABLE;
> > }
> >@@ -460,14 +424,16 @@ static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
> >
> > return 0;
> > }
> >
> > static int inno_hdmi_setup(struct inno_hdmi *hdmi,
> >- struct drm_display_mode *mode)
> >+ struct drm_crtc_state *new_crtc_state,
> >+ struct drm_connector_state *new_conn_state)
> > {
> >- struct drm_display_info *display = &hdmi->connector.display_info;
> >- unsigned long mpixelclock = mode->clock * 1000;
> >+ struct drm_connector *connector = &hdmi->connector;
> >+ struct drm_display_info *display = &connector->display_info;
> >+ struct drm_display_mode *mode = &new_crtc_state->adjusted_mode;
> >
> > /* Mute video and audio output */
> > hdmi_modb(hdmi, HDMI_AV_MUTE, m_AUDIO_MUTE | m_VIDEO_BLACK,
> > v_AUDIO_MUTE(1) | v_VIDEO_MUTE(1));
> >
> >@@ -477,26 +443,26 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
> >
> > inno_hdmi_config_video_timing(hdmi, mode);
> >
> > inno_hdmi_config_video_csc(hdmi);
> >
> >- if (display->is_hdmi)
> >- inno_hdmi_config_video_avi(hdmi, mode);
> >+ drm_atomic_helper_connector_hdmi_update_infoframes(connector,
> >+ new_conn_state->state);
> >
>
> new_conn_state->state will be set NULL in drm_atomic_helper_swap_state,
> so this will cause a NULL pointer reference panic here.
That's a good catch, I'll fix it, thanks!
Maxime
Hi again,
On Sun, May 12, 2024 at 04:18:38PM +0800, Andy Yan wrote:
> 在 2024-05-07 21:17:33，"Maxime Ripard" <[email protected]> 写道：
> >Now that we have all the infrastructure needed, we can add some code
> >that will, for a given connector state and mode, compute the best output
> >format and bpc.
> >
> >The algorithm is equivalent to the one already found in i915 and vc4.
> >
> >Cc: Ville Syrjälä <[email protected]>
> >Signed-off-by: Maxime Ripard <[email protected]>
> >---
> > drivers/gpu/drm/display/drm_hdmi_state_helper.c | 199 ++++++++++++++++++++-
> > drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c | 25 ++-
> > 2 files changed, 212 insertions(+), 12 deletions(-)
> >
> >diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
> >index 063421835dba..f20dcfecb6b8 100644
> >--- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c
> >+++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c
> >@@ -1,9 +1,11 @@
> > // SPDX-License-Identifier: MIT
> >
> > #include <drm/drm_atomic.h>
> > #include <drm/drm_connector.h>
> >+#include <drm/drm_edid.h>
> >+#include <drm/drm_print.h>
> >
> > #include <drm/display/drm_hdmi_helper.h>
> > #include <drm/display/drm_hdmi_state_helper.h>
> >
> > /**
> >@@ -46,10 +48,112 @@ connector_state_get_mode(const struct drm_connector_state *conn_state)
> > return NULL;
> >
> > return &crtc_state->mode;
> > }
> >
> >+static bool
> >+sink_supports_format_bpc(const struct drm_connector *connector,
> >+ const struct drm_display_info *info,
> >+ const struct drm_display_mode *mode,
> >+ unsigned int format, unsigned int bpc)
> >+{
> >+ struct drm_device *dev = connector->dev;
> >+ u8 vic = drm_match_cea_mode(mode);
> >+
> >+ /*
> >+ * CTA-861-F, section 5.4 - Color Coding & Quantization states
> >+ * that the bpc must be 8, 10, 12 or 16 except for the default
> >+ * 640x480 VIC1 where the value must be 8.
> >+ *
> >+ * The definition of default here is ambiguous but the spec
> >+ * refers to VIC1 being the default timing in several occasions
> >+ * so our understanding is that for the default timing (ie,
> >+ * VIC1), the bpc must be 8.
> >+ */
> >+ if (vic == 1 && bpc != 8) {
> >+ drm_dbg_kms(dev, "VIC1 requires a bpc of 8, got %u\n", bpc);
> >+ return false;
> >+ }
> >+
> >+ if (!info->is_hdmi &&
> >+ (format != HDMI_COLORSPACE_RGB || bpc != 8)) {
> >+ drm_dbg_kms(dev, "DVI Monitors require an RGB output at 8 bpc\n");
> >+ return false;
> >+ }
> >+
> >+ if (!(connector->hdmi.supported_formats & BIT(format))) {
> >+ drm_dbg_kms(dev, "%s format unsupported by the connector.\n",
> >+ drm_hdmi_connector_get_output_format_name(format));
> >+ return false;
> >+ }
> >+
> >+ switch (format) {
> >+ case HDMI_COLORSPACE_RGB:
> >+ drm_dbg_kms(dev, "RGB Format, checking the constraints.\n");
> >+
> >+ if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444)) {
> >+ drm_dbg_kms(dev, "Sink doesn't support RGB.\n");
> >+ return false;
> >+ }
> >+
> As I reported in V12, the HDMI output on my rk3036-kylin was lost after apply this series.
> This is because there is something wrong with the DDC on my board, the edid read always failed
> on first bootup. That means inno_hdmi_connector_get_modes will return 0.
>
> and in function drm_helper_probe_single_connector_modes:
>
> count = drm_helper_probe_get_modes(connector);
>
> if (count == 0 && (connector->status == connector_status_connected ||
> connector->status == connector_status_unknown)) {
> count = drm_add_modes_noedid(connector, 1024, 768);
>
> /*
> * Section 4.2.2.6 (EDID Corruption Detection) of the DP 1.4a
> * Link CTS specifies that 640x480 (the official "failsafe"
> * mode) needs to be the default if there's no EDID.
> */
> if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort)
> drm_set_preferred_mode(connector, 640, 480);
> }
> drm_add_modes_noedid will not initialize display_info. So the check about display info will always failed here:
>
> [ 4.205368] rockchip-drm display-subsystem: [drm:drm_atomic_check_only] checking (ptrval)
> [ 4.205410] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] mode changed
> [ 4.205439] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] enable changed
> [ 4.205464] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CRTC:35:crtc-0] active changed
> [ 4.205490] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] Updating routing for [CONNECTOR:37:HDMI-A-1]
> [ 4.205517] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CONNECTOR:37:HDMI-A-1] using [ENCODER:36:TMDS-36] on [CRTC:35:crtc-0]
> [ 4.205545] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Trying with a 8 bpc output
> [ 4.205575] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Trying RGB output format
> [ 4.205670] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] RGB Format, checking the constraints.
> [ 4.205696] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Sink doesn't support RGB.
> [ 4.205720] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] RGB output format not supported with 8 bpc
> [ 4.205747] rockchip-drm display-subsystem: [drm:drm_atomic_helper_connector_hdmi_check] Failed. No Format Supported for that bpc count.
> [ 4.205772] rockchip-drm display-subsystem: [drm:drm_atomic_helper_check_modeset] [CONNECTOR:37:HDMI-A-1] driver check failed
> [ 4.205796] rockchip-drm display-subsystem: [drm:drm_atomic_check_only] atomic driver check for (ptrval) failed: -22
>
> My reply for your email in V12[0] was bounced, so I think you didn't read it.
>
> [0]https://patchwork.kernel.org/project/linux-rockchip/patch/[email protected]/
Indeed, I never received it, sorry.
Thanks for looking into it, it's very valuable.
I can see several things that interact and could go wrong:
* The DDC readout should not fail like that. From a quick look at the
driver, I'm wondering if it's not due to the fact that the DDC
controller isn't powered until the first modeset happens. Since the
first get_modes call is done with the controller disabled, it's
probably not initialized enough yet. The first modeset then comes and
will initialize the controller enough for the subsequent get_modes to
work. Is it something you could look into?
* drm_display_info not being filled to some sane default when there's no
EDID is indeed an issue. I can't be made generic, but the HDMI spec
provides us with some minimum requirements we can probably set in this
case (RGB supported, 8bpc supported, etc.) I'll work on that.
Thanks again,
Maxime