While porting lt9611 DSI-to-HDMI bridge driver to use HDMI Connector
framework, I stumbled upon an issue while handling the Audio InfoFrames.
The HDMI codec callbacks weren't receiving the drm_atomic_state, so
there was no simple way to get the drm_connector that stayed at the end
of the bridge chain. At the same point the drm_hdmi_connector functions
expected to get drm_connector instance.
While looking for a way to solve the issue, I stumbled upon several
deficiencies in existing hdmi_codec_ops implementations. Only few of the
implementations were able to handle codec's 'plugged' callback. One
third of the drivers didn't implement the get_eld() callback.
Most of the issues can be solved if drm_connector handles
hdmi-audio-codec on its own, delegating functionality to the actual
implementation, be it a driver that implements drm_connector or
drm_bridge.
Implement such high-level framework, adding proper support for Audio
InfoFrame generation to the LT9611 driver.
Several design decisions to be kept in mind:
- drm_connector_hdmi_codec is kept as simple as possible. It implements
generic functionality (ELD, hotplug, registration).
- drm_hdmi_connector allocates drm_connector_hdmi_codec if the connector
is setup correspondingly (either I2S or S/PDIF is marked as
supported).
- drm_bridge_connector provides a way to link HDMI audio codec
funcionality in the drm_bridge with the drm_connector_hdmi_codec
framework.
- The drm_bridge didn't implemnent support for no_capture_mute flag. Nor
there is support for no_i2s_playback/_capture and no_spdif_playback /
_capture flags. I think it's worth moving no_capture_mute to the
hdmi_codec_pdata, together with the rest of the codec data. This will
allow us to keep single implementation of ops in the
drm_bridge_connector.
At the same time it might be worth reverting the
no_i2s_capture / no_spdif_capture bits. Only TDA889x driver sets them,
while it's safe to assume that most of HDMI / DP devices do not
support ARC / capture. I think the drivers should opt-in capture
support rather than having to opt-out of it.
- The bridge's driver has the unbalanced call to
drmm_connector_hdmi_codec_free(). This is because of the difference in
lifetime cycles. The drm_connector is tied to the lifetime of the DRM
device, by using the drmm_ calls. However the bridge can be removed,
while the DRM device is still lingering on its path to destruction.
This series is in the RFC stage, so some bits are underdocumented.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
Dmitry Baryshkov (5):
drm/bridge: lt9611: use HDMI Connector helper to set InfoFrames
ASoC: hdmi-codec: pass data to get_dai_id too
drm/connector: implement generic HDMI codec helpers
drm/bridge: connector: add support for HDMI codec framework
drm/bridge: lt9611: switch to using the DRM HDMI codec framework
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/bridge/Kconfig | 2 +
drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 3 +-
drivers/gpu/drm/bridge/analogix/anx7625.c | 3 +-
drivers/gpu/drm/bridge/lontium-lt9611.c | 347 ++++++++++++---------
drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 3 +-
drivers/gpu/drm/bridge/sii902x.c | 3 +-
.../gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 3 +-
drivers/gpu/drm/drm_bridge_connector.c | 130 +++++++-
drivers/gpu/drm/drm_connector.c | 8 +
drivers/gpu/drm/drm_connector_hdmi_codec.c | 157 ++++++++++
include/drm/drm_bridge.h | 46 +++
include/drm/drm_connector.h | 33 ++
include/sound/hdmi-codec.h | 3 +-
sound/soc/codecs/hdmi-codec.c | 2 +-
15 files changed, 594 insertions(+), 150 deletions(-)
---
base-commit: f83b272021ad706ff952bc53b707a3a8657eef71
change-id: 20240530-drm-bridge-hdmi-connector-9b0f6725973e
Best regards,
--
Dmitry Baryshkov <[email protected]>
Use new HDMI Connector helpers in the Lontium LT9611 bridge driver.
Program InfoFrames using the helper's callbacks. Also use TMDS char rate
validation callback to filter out modes, instead of hardcoding 4k@30.
The Audio InfoFrame isn't yet handled by these helpers, it requires
additional drm_bridge interface changes.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/bridge/Kconfig | 2 +
drivers/gpu/drm/bridge/lontium-lt9611.c | 173 ++++++++++++++++++++++----------
2 files changed, 120 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index c621be1a99a8..b27b8a072101 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -140,6 +140,8 @@ config DRM_LONTIUM_LT9611
select DRM_PANEL_BRIDGE
select DRM_KMS_HELPER
select DRM_MIPI_DSI
+ select DRM_DISPLAY_HELPER
+ select DRM_DISPLAY_HDMI_STATE_HELPER
select REGMAP_I2C
help
Driver for Lontium LT9611 DSI to HDMI bridge
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 73983f9b50cb..1b31fdebe164 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -23,6 +23,8 @@
#include <drm/drm_of.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>
#define EDID_SEG_SIZE 256
#define EDID_LEN 32
@@ -333,49 +335,6 @@ static int lt9611_video_check(struct lt9611 *lt9611)
return temp;
}
-static void lt9611_hdmi_set_infoframes(struct lt9611 *lt9611,
- struct drm_connector *connector,
- struct drm_display_mode *mode)
-{
- union hdmi_infoframe infoframe;
- ssize_t len;
- u8 iframes = 0x0a; /* UD1 infoframe */
- u8 buf[32];
- int ret;
- int i;
-
- ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe.avi,
- connector,
- mode);
- if (ret < 0)
- goto out;
-
- len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
- if (len < 0)
- goto out;
-
- for (i = 0; i < len; i++)
- regmap_write(lt9611->regmap, 0x8440 + i, buf[i]);
-
- ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe.vendor.hdmi,
- connector,
- mode);
- if (ret < 0)
- goto out;
-
- len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf));
- if (len < 0)
- goto out;
-
- for (i = 0; i < len; i++)
- regmap_write(lt9611->regmap, 0x8474 + i, buf[i]);
-
- iframes |= 0x20;
-
-out:
- regmap_write(lt9611->regmap, 0x843d, iframes); /* UD1 infoframe */
-}
-
static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611, bool is_hdmi)
{
if (is_hdmi)
@@ -719,7 +678,7 @@ lt9611_bridge_atomic_enable(struct drm_bridge *bridge,
}
lt9611_mipi_input_analog(lt9611);
- lt9611_hdmi_set_infoframes(lt9611, connector, mode);
+ drm_atomic_helper_connector_hdmi_update_infoframes(connector, state);
lt9611_hdmi_tx_digital(lt9611, connector->display_info.is_hdmi);
lt9611_hdmi_tx_phy(lt9611);
@@ -798,22 +757,25 @@ static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_mode *mode)
{
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+ unsigned long long rate;
if (mode->hdisplay > 3840)
return MODE_BAD_HVALUE;
- if (mode->vdisplay > 2160)
- return MODE_BAD_VVALUE;
-
- if (mode->hdisplay == 3840 &&
- mode->vdisplay == 2160 &&
- drm_mode_vrefresh(mode) > 30)
- return MODE_CLOCK_HIGH;
-
if (mode->hdisplay > 2000 && !lt9611->dsi1_node)
return MODE_PANEL;
- else
- return MODE_OK;
+
+ rate = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB);
+ return bridge->funcs->hdmi_tmds_char_rate_valid(bridge, mode, rate);
+}
+
+static int lt9611_bridge_atomic_check(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ return drm_atomic_helper_connector_hdmi_check(conn_state->connector,
+ conn_state->state);
}
static void lt9611_bridge_atomic_pre_enable(struct drm_bridge *bridge,
@@ -887,6 +849,99 @@ lt9611_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
return input_fmts;
}
+/*
+ * Other working frames:
+ * - 0x01, 0x84df
+ * - 0x04, 0x84c0
+ */
+#define LT9611_INFOFRAME_AUDIO 0x02
+#define LT9611_INFOFRAME_AVI 0x08
+#define LT9611_INFOFRAME_SPD 0x10
+#define LT9611_INFOFRAME_VENDOR 0x20
+
+static int lt9611_hdmi_clear_infoframe(struct drm_bridge *bridge,
+ enum hdmi_infoframe_type type)
+{
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+ unsigned int mask;
+
+ switch (type) {
+ case HDMI_INFOFRAME_TYPE_AVI:
+ mask = LT9611_INFOFRAME_AVI;
+ break;
+
+ case HDMI_INFOFRAME_TYPE_SPD:
+ mask = LT9611_INFOFRAME_SPD;
+ break;
+
+ case HDMI_INFOFRAME_TYPE_VENDOR:
+ mask = LT9611_INFOFRAME_VENDOR;
+ break;
+
+ default:
+ drm_dbg_driver(lt9611->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type);
+ mask = 0;
+ break;
+ }
+
+ if (mask)
+ regmap_update_bits(lt9611->regmap, 0x843d, mask, 0);
+
+ return 0;
+}
+
+static int lt9611_hdmi_write_infoframe(struct drm_bridge *bridge,
+ enum hdmi_infoframe_type type,
+ const u8 *buffer, size_t len)
+{
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+ unsigned int mask, addr;
+ int i;
+
+ switch (type) {
+ case HDMI_INFOFRAME_TYPE_AVI:
+ mask = LT9611_INFOFRAME_AVI;
+ addr = 0x8440;
+ break;
+
+ case HDMI_INFOFRAME_TYPE_SPD:
+ mask = LT9611_INFOFRAME_SPD;
+ addr = 0x8493;
+ break;
+
+ case HDMI_INFOFRAME_TYPE_VENDOR:
+ mask = LT9611_INFOFRAME_VENDOR;
+ addr = 0x8474;
+ break;
+
+ default:
+ drm_dbg_driver(lt9611->bridge.dev, "Unsupported HDMI InfoFrame %x\n", type);
+ mask = 0;
+ break;
+ }
+
+ if (mask) {
+ for (i = 0; i < len; i++)
+ regmap_write(lt9611->regmap, addr + i, buffer[i]);
+
+ regmap_update_bits(lt9611->regmap, 0x843d, mask, mask);
+ }
+
+ return 0;
+}
+
+static enum drm_mode_status
+lt9611_hdmi_tmds_char_rate_valid(const struct drm_bridge *bridge,
+ const struct drm_display_mode *mode,
+ unsigned long long tmds_rate)
+{
+ /* 297 MHz for 4k@30 mode */
+ if (tmds_rate > 297000000)
+ return MODE_CLOCK_HIGH;
+
+ return MODE_OK;
+}
+
static const struct drm_bridge_funcs lt9611_bridge_funcs = {
.attach = lt9611_bridge_attach,
.mode_valid = lt9611_bridge_mode_valid,
@@ -894,6 +949,7 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = {
.edid_read = lt9611_bridge_edid_read,
.hpd_enable = lt9611_bridge_hpd_enable,
+ .atomic_check = lt9611_bridge_atomic_check,
.atomic_pre_enable = lt9611_bridge_atomic_pre_enable,
.atomic_enable = lt9611_bridge_atomic_enable,
.atomic_disable = lt9611_bridge_atomic_disable,
@@ -902,6 +958,10 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = {
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_get_input_bus_fmts = lt9611_atomic_get_input_bus_fmts,
+
+ .hdmi_tmds_char_rate_valid = lt9611_hdmi_tmds_char_rate_valid,
+ .hdmi_write_infoframe = lt9611_hdmi_write_infoframe,
+ .hdmi_clear_infoframe = lt9611_hdmi_clear_infoframe,
};
static int lt9611_parse_dt(struct device *dev,
@@ -1116,8 +1176,11 @@ static int lt9611_probe(struct i2c_client *client)
lt9611->bridge.funcs = <9611_bridge_funcs;
lt9611->bridge.of_node = client->dev.of_node;
lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
- DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES;
+ DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES |
+ DRM_BRIDGE_OP_HDMI;
lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
+ lt9611->bridge.vendor = "Lontium";
+ lt9611->bridge.product = "LT9611";
drm_bridge_add(<9611->bridge);
--
2.39.2
The upcoming DRM connector HDMI codec implementation is going to use
codec-specific data in the .get_dai_id to get drm_connector. Pass data
to the callback, as it is done with other hdmi_codec_ops callbacks.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/bridge/adv7511/adv7511_audio.c | 3 ++-
drivers/gpu/drm/bridge/analogix/anx7625.c | 3 ++-
drivers/gpu/drm/bridge/lontium-lt9611.c | 3 ++-
drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 3 ++-
drivers/gpu/drm/bridge/sii902x.c | 3 ++-
drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c | 3 ++-
include/sound/hdmi-codec.h | 3 ++-
sound/soc/codecs/hdmi-codec.c | 2 +-
8 files changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
index 61f4a38e7d2b..51fb9a574b4e 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_audio.c
@@ -204,7 +204,8 @@ static void audio_shutdown(struct device *dev, void *data)
}
static int adv7511_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 88e4aa5830f3..f18cf79a292b 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1962,7 +1962,8 @@ static void anx7625_audio_shutdown(struct device *dev, void *data)
}
static int anx7625_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 1b31fdebe164..4fa0dfc5539a 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -1059,7 +1059,8 @@ static void lt9611_audio_shutdown(struct device *dev, void *data)
}
static int lt9611_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
index 4e802b54a1cb..54c528fa168e 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
@@ -601,7 +601,8 @@ static void lt9611uxc_audio_shutdown(struct device *dev, void *data)
}
static int lt9611uxc_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
index 7f91b0db161e..1883df5fd5c1 100644
--- a/drivers/gpu/drm/bridge/sii902x.c
+++ b/drivers/gpu/drm/bridge/sii902x.c
@@ -798,7 +798,8 @@ static int sii902x_audio_get_eld(struct device *dev, void *data,
}
static int sii902x_audio_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
index 26c187d20d97..86c412e9cbc8 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
@@ -148,7 +148,8 @@ static int dw_hdmi_i2s_get_eld(struct device *dev, void *data, uint8_t *buf,
}
static int dw_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint)
+ struct device_node *endpoint,
+ void *data)
{
struct of_endpoint of_ep;
int ret;
diff --git a/include/sound/hdmi-codec.h b/include/sound/hdmi-codec.h
index 5e1a9eafd10f..b3407b47b4a7 100644
--- a/include/sound/hdmi-codec.h
+++ b/include/sound/hdmi-codec.h
@@ -105,7 +105,8 @@ struct hdmi_codec_ops {
* Optional
*/
int (*get_dai_id)(struct snd_soc_component *comment,
- struct device_node *endpoint);
+ struct device_node *endpoint,
+ void *data);
/*
* Hook callback function to handle connector plug event.
diff --git a/sound/soc/codecs/hdmi-codec.c b/sound/soc/codecs/hdmi-codec.c
index d3abb7ce2153..afad402122cb 100644
--- a/sound/soc/codecs/hdmi-codec.c
+++ b/sound/soc/codecs/hdmi-codec.c
@@ -981,7 +981,7 @@ static int hdmi_of_xlate_dai_id(struct snd_soc_component *component,
int ret = -ENOTSUPP; /* see snd_soc_get_dai_id() */
if (hcp->hcd.ops->get_dai_id)
- ret = hcp->hcd.ops->get_dai_id(component, endpoint);
+ ret = hcp->hcd.ops->get_dai_id(component, endpoint, hcp->hcd.data);
return ret;
}
--
2.39.2
Several DRM drivers implement HDMI codec support (despite its name it
applies to both HDMI and DisplayPort drivers). Implement generic
framework to be used by these drivers. This removes a requirement to
implement get_eld() callback and provides default implementation for
codec's plug handling.
The framework is integrated with the DRM HDMI Connector framework, but
can be used by DisplayPort drivers.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/Makefile | 1 +
drivers/gpu/drm/drm_connector.c | 8 ++
drivers/gpu/drm/drm_connector_hdmi_codec.c | 157 +++++++++++++++++++++++++++++
include/drm/drm_connector.h | 33 ++++++
4 files changed, 199 insertions(+)
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 68cc9258ffc4..e113a6eade23 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -45,6 +45,7 @@ drm-y := \
drm_client_modeset.o \
drm_color_mgmt.o \
drm_connector.o \
+ drm_connector_hdmi_codec.o \
drm_crtc.o \
drm_displayid.o \
drm_drv.o \
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 3d73a981004c..66d6e9487339 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -279,6 +279,7 @@ static int __drm_connector_init(struct drm_device *dev,
mutex_init(&connector->mutex);
mutex_init(&connector->edid_override_mutex);
mutex_init(&connector->hdmi.infoframes.lock);
+ mutex_init(&connector->hdmi_codec.lock);
connector->edid_blob_ptr = NULL;
connector->epoch_counter = 0;
connector->tile_blob_ptr = NULL;
@@ -529,6 +530,12 @@ int drmm_connector_hdmi_init(struct drm_device *dev,
connector->hdmi.funcs = hdmi_funcs;
+ if (connector->hdmi_codec.i2s || connector->hdmi_codec.spdif) {
+ ret = drmm_connector_hdmi_codec_alloc(dev, connector, hdmi_funcs->codec_ops);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
EXPORT_SYMBOL(drmm_connector_hdmi_init);
@@ -665,6 +672,7 @@ void drm_connector_cleanup(struct drm_connector *connector)
connector->funcs->atomic_destroy_state(connector,
connector->state);
+ mutex_destroy(&connector->hdmi_codec.lock);
mutex_destroy(&connector->hdmi.infoframes.lock);
mutex_destroy(&connector->mutex);
diff --git a/drivers/gpu/drm/drm_connector_hdmi_codec.c b/drivers/gpu/drm/drm_connector_hdmi_codec.c
new file mode 100644
index 000000000000..a3a7ad117f6f
--- /dev/null
+++ b/drivers/gpu/drm/drm_connector_hdmi_codec.c
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2024 Linaro Ltd
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+
+#include <drm/drm_connector.h>
+#include <drm/drm_managed.h>
+
+#include <sound/hdmi-codec.h>
+
+static int drm_connector_hdmi_codec_get_eld(struct device *dev, void *data,
+ uint8_t *buf, size_t len)
+{
+ struct drm_connector *connector = data;
+
+ // FIXME: locking against drm_edid_to_eld ?
+ memcpy(buf, connector->eld, min(sizeof(connector->eld), len));
+
+ return 0;
+}
+
+static int drm_connector_hdmi_codec_hook_plugged_cb(struct device *dev,
+ void *data,
+ hdmi_codec_plugged_cb fn,
+ struct device *codec_dev)
+{
+ struct drm_connector *connector = data;
+
+ mutex_lock(&connector->hdmi_codec.lock);
+
+ connector->hdmi_codec.plugged_cb = fn;
+ connector->hdmi_codec.plugged_cb_dev = codec_dev;
+
+ fn(codec_dev, connector->hdmi_codec.last_state);
+
+ mutex_unlock(&connector->hdmi_codec.lock);
+
+ return 0;
+}
+
+void drm_connector_hdmi_codec_plugged_notify(struct drm_connector *connector,
+ bool plugged)
+{
+ mutex_lock(&connector->hdmi_codec.lock);
+
+ connector->hdmi_codec.last_state = plugged;
+
+ if (connector->hdmi_codec.plugged_cb &&
+ connector->hdmi_codec.plugged_cb_dev)
+ connector->hdmi_codec.plugged_cb(connector->hdmi_codec.plugged_cb_dev,
+ connector->hdmi_codec.last_state);
+
+ mutex_unlock(&connector->hdmi_codec.lock);
+}
+EXPORT_SYMBOL(drm_connector_hdmi_codec_plugged_notify);
+
+static void drm_connector_hdmi_codec_cleanup_action(struct drm_device *dev,
+ void *ptr)
+{
+ struct platform_device *pdev = ptr;
+
+ platform_device_unregister(pdev);
+}
+
+/**
+ * drmm_connector_hdmi_alloc - Allocate HDMI Codec device for the DRM connector
+ * @dev: DRM device
+ * @connector: A pointer to the connector to allocate codec for
+ * @ops: callbacks for this connector
+ *
+ * Create a HDMI codec device to be used with the specified connector.
+ *
+ * Cleanup is automatically handled with 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_codec_alloc(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct hdmi_codec_ops *base_ops)
+{
+ struct hdmi_codec_pdata codec_pdata = {};
+ struct platform_device *pdev;
+ struct hdmi_codec_ops *ops;
+ int ret;
+
+ ops = drmm_kmalloc(dev, sizeof(*ops), GFP_KERNEL);
+ if (!ops)
+ return -ENOMEM;
+
+ *ops = *base_ops;
+
+ ops->get_eld = drm_connector_hdmi_codec_get_eld;
+ ops->hook_plugged_cb = drm_connector_hdmi_codec_hook_plugged_cb;
+
+ codec_pdata.ops = ops;
+ codec_pdata.i2s = connector->hdmi_codec.i2s,
+ codec_pdata.spdif = connector->hdmi_codec.spdif,
+ codec_pdata.max_i2s_channels = connector->hdmi_codec.max_i2s_channels,
+ codec_pdata.data = connector;
+
+ pdev = platform_device_register_data(connector->hdmi_codec.parent_dev,
+ HDMI_CODEC_DRV_NAME,
+ PLATFORM_DEVID_AUTO,
+ &codec_pdata, sizeof(codec_pdata));
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
+ ret = drmm_add_action_or_reset(dev, drm_connector_hdmi_codec_cleanup_action, pdev);
+ if (ret)
+ return ret;
+
+ connector->hdmi_codec.codec_pdev = pdev;
+
+ return 0;
+}
+EXPORT_SYMBOL(drmm_connector_hdmi_codec_alloc);
+
+/**
+ * drmm_connector_hdmi_codec_free - rollback drmm_connector_hdmi_codec_alloc
+ * @dev: DRM device
+ * @hdmi_codec: A pointer to the HDMI codec data
+ *
+ * Rollback the drmm_connector_hdmi_codec_alloc() and free allocated data.
+ * While this function should not be necessary for a typical driver, DRM bridge
+ * drivers have to call it from the remove callback if the bridge uses
+ * Connector's HDMI Codec interface.
+ */
+void drmm_connector_hdmi_codec_free(struct drm_device *dev,
+ struct drm_connector_hdmi_codec *hdmi_codec)
+{
+ drmm_release_action(dev, drm_connector_hdmi_codec_cleanup_action,
+ hdmi_codec->codec_pdev);
+}
+EXPORT_SYMBOL(drmm_connector_hdmi_codec_free);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index f750765d8fbc..0eb8d8ed9495 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -46,6 +46,7 @@ struct drm_property_blob;
struct drm_printer;
struct drm_privacy_screen;
struct edid;
+struct hdmi_codec_ops;
struct i2c_adapter;
enum drm_connector_force {
@@ -1199,6 +1200,8 @@ struct drm_connector_hdmi_funcs {
int (*write_infoframe)(struct drm_connector *connector,
enum hdmi_infoframe_type type,
const u8 *buffer, size_t len);
+
+ const struct hdmi_codec_ops *codec_ops;
};
/**
@@ -1706,6 +1709,22 @@ struct drm_connector_hdmi {
} infoframes;
};
+struct drm_connector_hdmi_codec {
+ struct device *parent_dev;
+ struct platform_device *codec_pdev;
+
+ const struct drm_connector_hdmi_codec_funcs *funcs;
+
+ struct mutex lock; /* protects last_state and plugged_cb */
+ void (*plugged_cb)(struct device *dev, bool plugged);
+ struct device *plugged_cb_dev;
+ bool last_state;
+
+ int max_i2s_channels;
+ uint i2s: 1;
+ uint spdif: 1;
+};
+
/**
* struct drm_connector - central DRM connector control structure
*
@@ -2119,6 +2138,12 @@ struct drm_connector {
* @hdmi: HDMI-related variable and properties.
*/
struct drm_connector_hdmi hdmi;
+
+ /**
+ * @hdmi_codec: HDMI codec properties and variables. Also might be used
+ * for DisplayPort audio.
+ */
+ struct drm_connector_hdmi_codec hdmi_codec;
};
#define obj_to_connector(x) container_of(x, struct drm_connector, base)
@@ -2152,6 +2177,14 @@ void drm_connector_unregister(struct drm_connector *connector);
int drm_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder);
+int drmm_connector_hdmi_codec_alloc(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct hdmi_codec_ops *ops);
+void drmm_connector_hdmi_codec_free(struct drm_device *dev,
+ struct drm_connector_hdmi_codec *codec);
+void drm_connector_hdmi_codec_plugged_notify(struct drm_connector *connector,
+ bool plugged);
+
void drm_connector_cleanup(struct drm_connector *connector);
static inline unsigned int drm_connector_index(const struct drm_connector *connector)
--
2.39.2
Add necessary glue code to be able to use new HDMI codec framework from
the DRM bridge drivers. The drm_bridge implements a limited set of the
hdmi_codec_ops interface, with the functions accepting both
drm_connector and drm_bridge instead of just a generic void pointer.
This framework is integrated with the DRM HDMI Connector framework, but
can also be used for DisplayPort connectors.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/drm_bridge_connector.c | 130 ++++++++++++++++++++++++++++++++-
include/drm/drm_bridge.h | 46 ++++++++++++
2 files changed, 174 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index 0869b663f17e..71d6fdc2391f 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -20,6 +20,8 @@
#include <drm/drm_probe_helper.h>
#include <drm/display/drm_hdmi_state_helper.h>
+#include <sound/hdmi-codec.h>
+
/**
* DOC: overview
*
@@ -95,6 +97,14 @@ struct drm_bridge_connector {
* HDMI connector infrastructure, if any (see &DRM_BRIDGE_OP_HDMI).
*/
struct drm_bridge *bridge_hdmi;
+ /**
+ * @bridge_hdmi_codec:
+ *
+ * The bridge in the chain that implements necessary support for the
+ * HDMI Audio Codec infrastructure, if any (see
+ * &DRM_BRIDGE_OP_HDMI_CODEC).
+ */
+ struct drm_bridge *bridge_hdmi_codec;
};
#define to_drm_bridge_connector(x) \
@@ -343,10 +353,104 @@ static int drm_bridge_connector_write_infoframe(struct drm_connector *connector,
return bridge->funcs->hdmi_write_infoframe(bridge, type, buffer, len);
}
+static int drm_bridge_connector_audio_startup(struct device *dev, void *data)
+{
+ struct drm_connector *connector = data;
+ struct drm_bridge_connector *bridge_connector =
+ to_drm_bridge_connector(connector);
+ struct drm_bridge *bridge;
+
+ bridge = bridge_connector->bridge_hdmi_codec;
+ if (!bridge)
+ return -EINVAL;
+
+ if (bridge->funcs->hdmi_codec_audio_startup)
+ return bridge->funcs->hdmi_codec_audio_startup(dev, connector, bridge);
+ else
+ return 0;
+}
+
+static int drm_bridge_connector_prepare(struct device *dev, void *data,
+ struct hdmi_codec_daifmt *fmt,
+ struct hdmi_codec_params *hparms)
+{
+ struct drm_connector *connector = data;
+ struct drm_bridge_connector *bridge_connector =
+ to_drm_bridge_connector(connector);
+ struct drm_bridge *bridge;
+
+ bridge = bridge_connector->bridge_hdmi_codec;
+ if (!bridge)
+ return -EINVAL;
+
+ return bridge->funcs->hdmi_codec_prepare(dev, connector, bridge, fmt, hparms);
+}
+
+static void drm_bridge_connector_audio_shutdown(struct device *dev, void *data)
+{
+ struct drm_connector *connector = data;
+ struct drm_bridge_connector *bridge_connector =
+ to_drm_bridge_connector(connector);
+ struct drm_bridge *bridge;
+
+ bridge = bridge_connector->bridge_hdmi_codec;
+ if (!bridge)
+ return;
+
+ bridge->funcs->hdmi_codec_audio_shutdown(dev, connector, bridge);
+}
+
+static int drm_bridge_connector_mute_stream(struct device *dev, void *data,
+ bool enable, int direction)
+{
+ struct drm_connector *connector = data;
+ struct drm_bridge_connector *bridge_connector =
+ to_drm_bridge_connector(connector);
+ struct drm_bridge *bridge;
+
+ bridge = bridge_connector->bridge_hdmi_codec;
+ if (!bridge)
+ return -EINVAL;
+
+ if (bridge->funcs->hdmi_codec_mute_stream)
+ return bridge->funcs->hdmi_codec_mute_stream(dev, connector, bridge,
+ enable, direction);
+ else
+ return -ENOTSUPP;
+}
+
+static int drm_bridge_connector_get_dai_id(struct snd_soc_component *comment,
+ struct device_node *endpoint,
+ void *data)
+{
+ struct drm_connector *connector = data;
+ struct drm_bridge_connector *bridge_connector =
+ to_drm_bridge_connector(connector);
+ struct drm_bridge *bridge;
+
+ bridge = bridge_connector->bridge_hdmi_codec;
+ if (!bridge)
+ return -EINVAL;
+
+ if (bridge->funcs->hdmi_codec_get_dai_id)
+ return bridge->funcs->hdmi_codec_get_dai_id(connector, bridge, endpoint);
+ else
+ return -ENOTSUPP;
+}
+
+static const struct hdmi_codec_ops drm_bridge_connector_hdmi_codec_ops = {
+ .audio_startup = drm_bridge_connector_audio_startup,
+ .prepare = drm_bridge_connector_prepare,
+ .audio_shutdown = drm_bridge_connector_audio_shutdown,
+ .mute_stream = drm_bridge_connector_mute_stream,
+ .get_dai_id = drm_bridge_connector_get_dai_id,
+};
+
static const struct drm_connector_hdmi_funcs drm_bridge_connector_hdmi_funcs = {
.tmds_char_rate_valid = drm_bridge_connector_tmds_char_rate_valid,
.clear_infoframe = drm_bridge_connector_clear_infoframe,
.write_infoframe = drm_bridge_connector_write_infoframe,
+ .codec_ops = &drm_bridge_connector_hdmi_codec_ops,
};
/* -----------------------------------------------------------------------------
@@ -427,6 +531,23 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
max_bpc = bridge->max_bpc;
}
+ if (bridge->ops & DRM_BRIDGE_OP_HDMI_CODEC) {
+ if (bridge_connector->bridge_hdmi_codec)
+ return ERR_PTR(-EBUSY);
+ if (!bridge->funcs->hdmi_codec_prepare ||
+ !bridge->funcs->hdmi_codec_audio_shutdown)
+ return ERR_PTR(-EINVAL);
+
+ bridge_connector->bridge_hdmi_codec = bridge;
+
+ connector->hdmi_codec.parent_dev = bridge->parent;
+ connector->hdmi_codec.i2s = bridge->hdmi_codec_i2s;
+ connector->hdmi_codec.spdif = bridge->hdmi_codec_spdif;
+ connector->hdmi_codec.max_i2s_channels = bridge->max_i2s_channels;
+
+ bridge->hdmi_codec = &connector->hdmi_codec;
+ }
+
if (!drm_bridge_get_next_bridge(bridge))
connector_type = bridge->type;
@@ -448,7 +569,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
return ERR_PTR(-EINVAL);
}
- if (bridge_connector->bridge_hdmi)
+ if (bridge_connector->bridge_hdmi) {
ret = drmm_connector_hdmi_init(drm, connector,
bridge_connector->bridge_hdmi->vendor,
bridge_connector->bridge_hdmi->product,
@@ -457,10 +578,15 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
connector_type, ddc,
supported_formats,
max_bpc);
- else
+ } else {
ret = drmm_connector_init(drm, connector,
&drm_bridge_connector_funcs,
connector_type, ddc);
+ if (!ret && bridge_connector->bridge_hdmi_codec) {
+ ret = drmm_connector_hdmi_codec_alloc(drm, connector,
+ &drm_bridge_connector_hdmi_codec_ops);
+ }
+ }
if (ret) {
kfree(bridge_connector);
return ERR_PTR(ret);
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 75019d16be64..c4a95c489b00 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -41,6 +41,8 @@ struct drm_display_info;
struct drm_minor;
struct drm_panel;
struct edid;
+struct hdmi_codec_daifmt;
+struct hdmi_codec_params;
struct i2c_adapter;
/**
@@ -676,6 +678,29 @@ struct drm_bridge_funcs {
enum hdmi_infoframe_type type,
const u8 *buffer, size_t len);
+ int (*hdmi_codec_audio_startup)(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge);
+
+ int (*hdmi_codec_prepare)(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ struct hdmi_codec_daifmt *fmt,
+ struct hdmi_codec_params *hparms);
+
+ void (*hdmi_codec_audio_shutdown)(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge);
+
+ int (*hdmi_codec_mute_stream)(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ bool enable, int direction);
+
+ int (*hdmi_codec_get_dai_id)(struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ struct device_node *endpoint);
+
/**
* @debugfs_init:
*
@@ -761,6 +786,20 @@ enum drm_bridge_ops {
* drivers.
*/
DRM_BRIDGE_OP_HDMI = BIT(4),
+ /**
+ * @DRM_BRIDGE_OP_HDMI_CODEC: The bridge provides HDMI Audio Codec
+ * operations. Bridges that set this flag must implement the
+ * &drm_bridge_funcs->hdmi_codec_prepare and
+ * &drm_bridge_funcs->hdmi_codec_audio_shutdown callbacks and set the
+ * relevant field in the &drm_bridge structure.
+ *
+ * This framework can be used by both HDMI and DisplayPort bridges.
+ *
+ * Note: currently there can be at most one bridge in a chain that sets
+ * this bit. This is to simplify corresponding glue code in connector
+ * drivers.
+ */
+ DRM_BRIDGE_OP_HDMI_CODEC = BIT(5),
};
/**
@@ -771,6 +810,8 @@ struct drm_bridge {
struct drm_private_obj base;
/** @dev: DRM device this bridge belongs to */
struct drm_device *dev;
+ /** @parent: device corresponding to the bridge, required only for HDMI codec */
+ struct device *parent;
/** @encoder: encoder to which this bridge is connected */
struct drm_encoder *encoder;
/** @chain_node: used to form a bridge chain */
@@ -854,6 +895,11 @@ struct drm_bridge {
* @DRM_BRIDGE_OP_HDMI is set.
*/
unsigned int max_bpc;
+
+ int max_i2s_channels;
+ unsigned int hdmi_codec_i2s : 1;
+ unsigned int hdmi_codec_spdif : 1;
+ struct drm_connector_hdmi_codec *hdmi_codec;
};
static inline struct drm_bridge *
--
2.39.2
Make the Lontium LT9611 DSI-to-HDMI bridge driver use the DRM HDMI Codec
framework. This enables programming of Audio InfoFrames using the HDMI
Connector interface and also enables support for the missing features,
including the ELD retrieval and better hotplug support.
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 207 ++++++++++++++++----------------
1 file changed, 104 insertions(+), 103 deletions(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 4fa0dfc5539a..02953468cb76 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -45,7 +45,6 @@ struct lt9611 {
struct device_node *dsi1_node;
struct mipi_dsi_device *dsi0;
struct mipi_dsi_device *dsi1;
- struct platform_device *audio_pdev;
bool ac_mode;
@@ -688,15 +687,22 @@ lt9611_bridge_atomic_enable(struct drm_bridge *bridge,
/* Enable HDMI output */
regmap_write(lt9611->regmap, 0x8130, 0xea);
+
+ drm_connector_hdmi_codec_plugged_notify(connector, true);
}
static void
lt9611_bridge_atomic_disable(struct drm_bridge *bridge,
struct drm_bridge_state *old_bridge_state)
{
+ struct drm_atomic_state *state = old_bridge_state->base.state;
+ struct drm_connector *connector;
struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
int ret;
+ connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
+ drm_connector_hdmi_codec_plugged_notify(connector, false);
+
/* Disable HDMI output */
ret = regmap_write(lt9611->regmap, 0x8130, 0x6a);
if (ret) {
@@ -866,6 +872,10 @@ static int lt9611_hdmi_clear_infoframe(struct drm_bridge *bridge,
unsigned int mask;
switch (type) {
+ case HDMI_INFOFRAME_TYPE_AUDIO:
+ mask = LT9611_INFOFRAME_AUDIO;
+ break;
+
case HDMI_INFOFRAME_TYPE_AVI:
mask = LT9611_INFOFRAME_AVI;
break;
@@ -899,6 +909,11 @@ static int lt9611_hdmi_write_infoframe(struct drm_bridge *bridge,
int i;
switch (type) {
+ case HDMI_INFOFRAME_TYPE_AUDIO:
+ mask = LT9611_INFOFRAME_AUDIO;
+ addr = 0x84b2;
+ break;
+
case HDMI_INFOFRAME_TYPE_AVI:
mask = LT9611_INFOFRAME_AVI;
addr = 0x8440;
@@ -942,6 +957,79 @@ lt9611_hdmi_tmds_char_rate_valid(const struct drm_bridge *bridge,
return MODE_OK;
}
+static int lt9611_hdmi_codec_prepare(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ struct hdmi_codec_daifmt *fmt,
+ struct hdmi_codec_params *hparms)
+{
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+
+ if (hparms->sample_rate == 48000)
+ regmap_write(lt9611->regmap, 0x840f, 0x2b);
+ else if (hparms->sample_rate == 96000)
+ regmap_write(lt9611->regmap, 0x840f, 0xab);
+ else
+ return -EINVAL;
+
+ regmap_write(lt9611->regmap, 0x8435, 0x00);
+ regmap_write(lt9611->regmap, 0x8436, 0x18);
+ regmap_write(lt9611->regmap, 0x8437, 0x00);
+
+ return drm_atomic_helper_connector_hdmi_update_audio_infoframe(connector,
+ &hparms->cea);
+}
+
+static int lt9611_hdmi_codec_audio_startup(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge)
+{
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+
+ regmap_write(lt9611->regmap, 0x82d6, 0x8c);
+ regmap_write(lt9611->regmap, 0x82d7, 0x04);
+
+ regmap_write(lt9611->regmap, 0x8406, 0x08);
+ regmap_write(lt9611->regmap, 0x8407, 0x10);
+
+ regmap_write(lt9611->regmap, 0x8434, 0xd5);
+
+ return 0;
+}
+
+static void lt9611_hdmi_codec_audio_shutdown(struct device *dev,
+ struct drm_connector *connector,
+ struct drm_bridge *bridge)
+{
+ struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
+
+ drm_atomic_helper_connector_hdmi_disable_audio_infoframe(connector);
+
+ regmap_write(lt9611->regmap, 0x8406, 0x00);
+ regmap_write(lt9611->regmap, 0x8407, 0x00);
+}
+
+static int lt9611_hdmi_codec_get_dai_id(struct drm_connector *connector,
+ struct drm_bridge *bridge,
+ struct device_node *endpoint)
+{
+ struct of_endpoint of_ep;
+ int ret;
+
+ ret = of_graph_parse_endpoint(endpoint, &of_ep);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * HDMI sound should be located as reg = <2>
+ * Then, it is sound port 0
+ */
+ if (of_ep.port == 2)
+ return 0;
+
+ return -EINVAL;
+}
+
static const struct drm_bridge_funcs lt9611_bridge_funcs = {
.attach = lt9611_bridge_attach,
.mode_valid = lt9611_bridge_mode_valid,
@@ -962,6 +1050,11 @@ static const struct drm_bridge_funcs lt9611_bridge_funcs = {
.hdmi_tmds_char_rate_valid = lt9611_hdmi_tmds_char_rate_valid,
.hdmi_write_infoframe = lt9611_hdmi_write_infoframe,
.hdmi_clear_infoframe = lt9611_hdmi_clear_infoframe,
+
+ .hdmi_codec_audio_startup = lt9611_hdmi_codec_audio_startup,
+ .hdmi_codec_prepare = lt9611_hdmi_codec_prepare,
+ .hdmi_codec_audio_shutdown = lt9611_hdmi_codec_audio_shutdown,
+ .hdmi_codec_get_dai_id = lt9611_hdmi_codec_get_dai_id,
};
static int lt9611_parse_dt(struct device *dev,
@@ -1015,102 +1108,6 @@ static int lt9611_read_device_rev(struct lt9611 *lt9611)
return ret;
}
-static int lt9611_hdmi_hw_params(struct device *dev, void *data,
- struct hdmi_codec_daifmt *fmt,
- struct hdmi_codec_params *hparms)
-{
- struct lt9611 *lt9611 = data;
-
- if (hparms->sample_rate == 48000)
- regmap_write(lt9611->regmap, 0x840f, 0x2b);
- else if (hparms->sample_rate == 96000)
- regmap_write(lt9611->regmap, 0x840f, 0xab);
- else
- return -EINVAL;
-
- regmap_write(lt9611->regmap, 0x8435, 0x00);
- regmap_write(lt9611->regmap, 0x8436, 0x18);
- regmap_write(lt9611->regmap, 0x8437, 0x00);
-
- return 0;
-}
-
-static int lt9611_audio_startup(struct device *dev, void *data)
-{
- struct lt9611 *lt9611 = data;
-
- regmap_write(lt9611->regmap, 0x82d6, 0x8c);
- regmap_write(lt9611->regmap, 0x82d7, 0x04);
-
- regmap_write(lt9611->regmap, 0x8406, 0x08);
- regmap_write(lt9611->regmap, 0x8407, 0x10);
-
- regmap_write(lt9611->regmap, 0x8434, 0xd5);
-
- return 0;
-}
-
-static void lt9611_audio_shutdown(struct device *dev, void *data)
-{
- struct lt9611 *lt9611 = data;
-
- regmap_write(lt9611->regmap, 0x8406, 0x00);
- regmap_write(lt9611->regmap, 0x8407, 0x00);
-}
-
-static int lt9611_hdmi_i2s_get_dai_id(struct snd_soc_component *component,
- struct device_node *endpoint,
- void *data)
-{
- struct of_endpoint of_ep;
- int ret;
-
- ret = of_graph_parse_endpoint(endpoint, &of_ep);
- if (ret < 0)
- return ret;
-
- /*
- * HDMI sound should be located as reg = <2>
- * Then, it is sound port 0
- */
- if (of_ep.port == 2)
- return 0;
-
- return -EINVAL;
-}
-
-static const struct hdmi_codec_ops lt9611_codec_ops = {
- .hw_params = lt9611_hdmi_hw_params,
- .audio_shutdown = lt9611_audio_shutdown,
- .audio_startup = lt9611_audio_startup,
- .get_dai_id = lt9611_hdmi_i2s_get_dai_id,
-};
-
-static struct hdmi_codec_pdata codec_data = {
- .ops = <9611_codec_ops,
- .max_i2s_channels = 8,
- .i2s = 1,
-};
-
-static int lt9611_audio_init(struct device *dev, struct lt9611 *lt9611)
-{
- codec_data.data = lt9611;
- lt9611->audio_pdev =
- platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
- PLATFORM_DEVID_AUTO,
- &codec_data, sizeof(codec_data));
-
- return PTR_ERR_OR_ZERO(lt9611->audio_pdev);
-}
-
-static void lt9611_audio_exit(struct lt9611 *lt9611)
-{
- if (lt9611->audio_pdev) {
- platform_device_unregister(lt9611->audio_pdev);
- lt9611->audio_pdev = NULL;
- }
-}
-
static int lt9611_probe(struct i2c_client *client)
{
struct lt9611 *lt9611;
@@ -1174,14 +1171,20 @@ static int lt9611_probe(struct i2c_client *client)
i2c_set_clientdata(client, lt9611);
+ /* Disable Audio InfoFrame, enabled by default */
+ regmap_update_bits(lt9611->regmap, 0x843d, LT9611_INFOFRAME_AUDIO, 0);
+
lt9611->bridge.funcs = <9611_bridge_funcs;
lt9611->bridge.of_node = client->dev.of_node;
lt9611->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID |
DRM_BRIDGE_OP_HPD | DRM_BRIDGE_OP_MODES |
- DRM_BRIDGE_OP_HDMI;
+ DRM_BRIDGE_OP_HDMI | DRM_BRIDGE_OP_HDMI_CODEC;
lt9611->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
lt9611->bridge.vendor = "Lontium";
lt9611->bridge.product = "LT9611";
+ lt9611->bridge.parent = dev;
+ lt9611->bridge.max_i2s_channels = 8;
+ lt9611->bridge.hdmi_codec_i2s = 1;
drm_bridge_add(<9611->bridge);
@@ -1203,10 +1206,6 @@ static int lt9611_probe(struct i2c_client *client)
lt9611_enable_hpd_interrupts(lt9611);
- ret = lt9611_audio_init(dev, lt9611);
- if (ret)
- goto err_remove_bridge;
-
return 0;
err_remove_bridge:
@@ -1227,7 +1226,9 @@ static void lt9611_remove(struct i2c_client *client)
struct lt9611 *lt9611 = i2c_get_clientdata(client);
disable_irq(client->irq);
- lt9611_audio_exit(lt9611);
+ if (lt9611->bridge.dev)
+ drmm_connector_hdmi_codec_free(lt9611->bridge.dev,
+ lt9611->bridge.hdmi_codec);
drm_bridge_remove(<9611->bridge);
regulator_bulk_disable(ARRAY_SIZE(lt9611->supplies), lt9611->supplies);
--
2.39.2