On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
becomes useless and never responds to cable hotplugging:
[ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
Seems like the lspcon chip on the system only gets powered after the
cable is plugged.
Consilidate lspcon_init() into lspcon_resume() to dynamically init
lspcon chip, and make HDMI port work.
Signed-off-by: Kai-Heng Feng <[email protected]>
---
v6:
- Rebase on latest for-linux-next.
v5:
- Consolidate lspcon_resume() with lspcon_init().
- Move more logic into lspcon code.
v4:
- Trust VBT in intel_infoframe_init().
- Init lspcon in intel_dp_detect().
v3:
- Make sure it's handled under long HPD case.
v2:
- Move lspcon_init() inside of intel_dp_hpd_pulse().
drivers/gpu/drm/i915/display/intel_ddi.c | 19 +------
drivers/gpu/drm/i915/display/intel_dp.c | 10 ++--
drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +-
drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++---------
drivers/gpu/drm/i915/display/intel_lspcon.h | 3 +-
5 files changed, 43 insertions(+), 55 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index aa22465bb56e..af755b1aa24b 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -4805,7 +4805,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
{
struct intel_digital_port *intel_dig_port;
struct intel_encoder *encoder;
- bool init_hdmi, init_dp, init_lspcon = false;
+ bool init_hdmi, init_dp;
enum phy phy = intel_port_to_phy(dev_priv, port);
init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
@@ -4819,7 +4819,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
* is initialized before lspcon.
*/
init_dp = true;
- init_lspcon = true;
init_hdmi = false;
drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
port_name(port));
@@ -4904,22 +4903,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
goto err;
}
- if (init_lspcon) {
- if (lspcon_init(intel_dig_port))
- /* TODO: handle hdmi info frame part */
- drm_dbg_kms(&dev_priv->drm,
- "LSPCON init success on port %c\n",
- port_name(port));
- else
- /*
- * LSPCON init faied, but DP init was success, so
- * lets try to drive as DP++ port.
- */
- drm_err(&dev_priv->drm,
- "LSPCON init failed on port %c\n",
- port_name(port));
- }
-
if (INTEL_GEN(dev_priv) >= 11) {
if (intel_phy_is_tc(dev_priv, phy))
intel_dig_port->connected = intel_tc_port_connected;
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index ed9e53c373a7..398a104158a8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5962,15 +5962,14 @@ static enum drm_connector_status
intel_dp_detect_dpcd(struct intel_dp *intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
- struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
u8 *dpcd = intel_dp->dpcd;
u8 type;
if (WARN_ON(intel_dp_is_edp(intel_dp)))
return connector_status_connected;
- if (lspcon->active)
- lspcon_resume(lspcon);
+ lspcon_resume(dig_port);
if (!intel_dp_get_dpcd(intel_dp))
return connector_status_disconnected;
@@ -7056,14 +7055,13 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->dev);
struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
- struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
intel_wakeref_t wakeref;
if (!HAS_DDI(dev_priv))
intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
- if (lspcon->active)
- lspcon_resume(lspcon);
+ lspcon_resume(dig_port);
intel_dp->reset_link_params = true;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 010f37240710..643ad2127931 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -3155,7 +3155,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
intel_dig_port->set_infoframes = g4x_set_infoframes;
intel_dig_port->infoframes_enabled = g4x_infoframes_enabled;
} else if (HAS_DDI(dev_priv)) {
- if (intel_dig_port->lspcon.active) {
+ if (intel_bios_is_lspcon_present(dev_priv,
+ intel_dig_port->base.port)) {
intel_dig_port->write_infoframe = lspcon_write_infoframe;
intel_dig_port->read_infoframe = lspcon_read_infoframe;
intel_dig_port->set_infoframes = lspcon_set_infoframes;
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
index 6ff7b226f0a1..e3dde4c25604 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.c
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
@@ -525,44 +525,17 @@ u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
return 0;
}
-void lspcon_resume(struct intel_lspcon *lspcon)
-{
- enum drm_lspcon_mode expected_mode;
-
- if (lspcon_wake_native_aux_ch(lspcon)) {
- expected_mode = DRM_LSPCON_MODE_PCON;
- lspcon_resume_in_pcon_wa(lspcon);
- } else {
- expected_mode = DRM_LSPCON_MODE_LS;
- }
-
- if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
- return;
-
- if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
- DRM_ERROR("LSPCON resume failed\n");
- else
- DRM_DEBUG_KMS("LSPCON resume success\n");
-}
-
void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
{
lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
}
-bool lspcon_init(struct intel_digital_port *intel_dig_port)
+static bool lspcon_init(struct intel_digital_port *intel_dig_port)
{
struct intel_dp *dp = &intel_dig_port->dp;
struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
- struct drm_device *dev = intel_dig_port->base.base.dev;
- struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_connector *connector = &dp->attached_connector->base;
- if (!HAS_LSPCON(dev_priv)) {
- DRM_ERROR("LSPCON is not supported on this platform\n");
- return false;
- }
-
lspcon->active = false;
lspcon->mode = DRM_LSPCON_MODE_INVALID;
@@ -586,3 +559,37 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
DRM_DEBUG_KMS("Success: LSPCON init\n");
return true;
}
+
+void lspcon_resume(struct intel_digital_port *intel_dig_port)
+{
+ struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
+ enum drm_lspcon_mode expected_mode;
+
+ if (!intel_bios_is_lspcon_present(dev_priv, intel_dig_port->base.port))
+ return;
+
+ if (!lspcon->active) {
+ if (!lspcon_init(intel_dig_port)) {
+ DRM_ERROR("LSPCON init failed on port %c\n",
+ port_name(intel_dig_port->base.port));
+ return;
+ }
+ }
+
+ if (lspcon_wake_native_aux_ch(lspcon)) {
+ expected_mode = DRM_LSPCON_MODE_PCON;
+ lspcon_resume_in_pcon_wa(lspcon);
+ } else {
+ expected_mode = DRM_LSPCON_MODE_LS;
+ }
+
+ if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
+ return;
+
+ if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
+ DRM_ERROR("LSPCON resume failed\n");
+ else
+ DRM_DEBUG_KMS("LSPCON resume success\n");
+}
diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
index 37cfddf8a9c5..169db35db13e 100644
--- a/drivers/gpu/drm/i915/display/intel_lspcon.h
+++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
@@ -15,8 +15,7 @@ struct intel_digital_port;
struct intel_encoder;
struct intel_lspcon;
-bool lspcon_init(struct intel_digital_port *intel_dig_port);
-void lspcon_resume(struct intel_lspcon *lspcon);
+void lspcon_resume(struct intel_digital_port *intel_dig_port);
void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
void lspcon_write_infoframe(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
--
2.17.1
> On Jun 10, 2020, at 15:55, Kai-Heng Feng <[email protected]> wrote:
>
> On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
> becomes useless and never responds to cable hotplugging:
> [ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
> [ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
>
> Seems like the lspcon chip on the system only gets powered after the
> cable is plugged.
>
> Consilidate lspcon_init() into lspcon_resume() to dynamically init
> lspcon chip, and make HDMI port work.
>
> Signed-off-by: Kai-Heng Feng <[email protected]>
A gentle ping...
> ---
> v6:
> - Rebase on latest for-linux-next.
>
> v5:
> - Consolidate lspcon_resume() with lspcon_init().
> - Move more logic into lspcon code.
>
> v4:
> - Trust VBT in intel_infoframe_init().
> - Init lspcon in intel_dp_detect().
>
> v3:
> - Make sure it's handled under long HPD case.
>
> v2:
> - Move lspcon_init() inside of intel_dp_hpd_pulse().
>
> drivers/gpu/drm/i915/display/intel_ddi.c | 19 +------
> drivers/gpu/drm/i915/display/intel_dp.c | 10 ++--
> drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +-
> drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++---------
> drivers/gpu/drm/i915/display/intel_lspcon.h | 3 +-
> 5 files changed, 43 insertions(+), 55 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index aa22465bb56e..af755b1aa24b 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -4805,7 +4805,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> {
> struct intel_digital_port *intel_dig_port;
> struct intel_encoder *encoder;
> - bool init_hdmi, init_dp, init_lspcon = false;
> + bool init_hdmi, init_dp;
> enum phy phy = intel_port_to_phy(dev_priv, port);
>
> init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
> @@ -4819,7 +4819,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> * is initialized before lspcon.
> */
> init_dp = true;
> - init_lspcon = true;
> init_hdmi = false;
> drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
> port_name(port));
> @@ -4904,22 +4903,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> goto err;
> }
>
> - if (init_lspcon) {
> - if (lspcon_init(intel_dig_port))
> - /* TODO: handle hdmi info frame part */
> - drm_dbg_kms(&dev_priv->drm,
> - "LSPCON init success on port %c\n",
> - port_name(port));
> - else
> - /*
> - * LSPCON init faied, but DP init was success, so
> - * lets try to drive as DP++ port.
> - */
> - drm_err(&dev_priv->drm,
> - "LSPCON init failed on port %c\n",
> - port_name(port));
> - }
> -
> if (INTEL_GEN(dev_priv) >= 11) {
> if (intel_phy_is_tc(dev_priv, phy))
> intel_dig_port->connected = intel_tc_port_connected;
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index ed9e53c373a7..398a104158a8 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5962,15 +5962,14 @@ static enum drm_connector_status
> intel_dp_detect_dpcd(struct intel_dp *intel_dp)
> {
> struct drm_i915_private *i915 = dp_to_i915(intel_dp);
> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> u8 *dpcd = intel_dp->dpcd;
> u8 type;
>
> if (WARN_ON(intel_dp_is_edp(intel_dp)))
> return connector_status_connected;
>
> - if (lspcon->active)
> - lspcon_resume(lspcon);
> + lspcon_resume(dig_port);
>
> if (!intel_dp_get_dpcd(intel_dp))
> return connector_status_disconnected;
> @@ -7056,14 +7055,13 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
> {
> struct drm_i915_private *dev_priv = to_i915(encoder->dev);
> struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> intel_wakeref_t wakeref;
>
> if (!HAS_DDI(dev_priv))
> intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
>
> - if (lspcon->active)
> - lspcon_resume(lspcon);
> + lspcon_resume(dig_port);
>
> intel_dp->reset_link_params = true;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 010f37240710..643ad2127931 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -3155,7 +3155,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
> intel_dig_port->set_infoframes = g4x_set_infoframes;
> intel_dig_port->infoframes_enabled = g4x_infoframes_enabled;
> } else if (HAS_DDI(dev_priv)) {
> - if (intel_dig_port->lspcon.active) {
> + if (intel_bios_is_lspcon_present(dev_priv,
> + intel_dig_port->base.port)) {
> intel_dig_port->write_infoframe = lspcon_write_infoframe;
> intel_dig_port->read_infoframe = lspcon_read_infoframe;
> intel_dig_port->set_infoframes = lspcon_set_infoframes;
> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
> index 6ff7b226f0a1..e3dde4c25604 100644
> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
> @@ -525,44 +525,17 @@ u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
> return 0;
> }
>
> -void lspcon_resume(struct intel_lspcon *lspcon)
> -{
> - enum drm_lspcon_mode expected_mode;
> -
> - if (lspcon_wake_native_aux_ch(lspcon)) {
> - expected_mode = DRM_LSPCON_MODE_PCON;
> - lspcon_resume_in_pcon_wa(lspcon);
> - } else {
> - expected_mode = DRM_LSPCON_MODE_LS;
> - }
> -
> - if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
> - return;
> -
> - if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
> - DRM_ERROR("LSPCON resume failed\n");
> - else
> - DRM_DEBUG_KMS("LSPCON resume success\n");
> -}
> -
> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
> {
> lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
> }
>
> -bool lspcon_init(struct intel_digital_port *intel_dig_port)
> +static bool lspcon_init(struct intel_digital_port *intel_dig_port)
> {
> struct intel_dp *dp = &intel_dig_port->dp;
> struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
> - struct drm_device *dev = intel_dig_port->base.base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> struct drm_connector *connector = &dp->attached_connector->base;
>
> - if (!HAS_LSPCON(dev_priv)) {
> - DRM_ERROR("LSPCON is not supported on this platform\n");
> - return false;
> - }
> -
> lspcon->active = false;
> lspcon->mode = DRM_LSPCON_MODE_INVALID;
>
> @@ -586,3 +559,37 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
> DRM_DEBUG_KMS("Success: LSPCON init\n");
> return true;
> }
> +
> +void lspcon_resume(struct intel_digital_port *intel_dig_port)
> +{
> + struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
> + struct drm_device *dev = intel_dig_port->base.base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + enum drm_lspcon_mode expected_mode;
> +
> + if (!intel_bios_is_lspcon_present(dev_priv, intel_dig_port->base.port))
> + return;
> +
> + if (!lspcon->active) {
> + if (!lspcon_init(intel_dig_port)) {
> + DRM_ERROR("LSPCON init failed on port %c\n",
> + port_name(intel_dig_port->base.port));
> + return;
> + }
> + }
> +
> + if (lspcon_wake_native_aux_ch(lspcon)) {
> + expected_mode = DRM_LSPCON_MODE_PCON;
> + lspcon_resume_in_pcon_wa(lspcon);
> + } else {
> + expected_mode = DRM_LSPCON_MODE_LS;
> + }
> +
> + if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
> + return;
> +
> + if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
> + DRM_ERROR("LSPCON resume failed\n");
> + else
> + DRM_DEBUG_KMS("LSPCON resume success\n");
> +}
> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
> index 37cfddf8a9c5..169db35db13e 100644
> --- a/drivers/gpu/drm/i915/display/intel_lspcon.h
> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
> @@ -15,8 +15,7 @@ struct intel_digital_port;
> struct intel_encoder;
> struct intel_lspcon;
>
> -bool lspcon_init(struct intel_digital_port *intel_dig_port);
> -void lspcon_resume(struct intel_lspcon *lspcon);
> +void lspcon_resume(struct intel_digital_port *intel_dig_port);
> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
> void lspcon_write_infoframe(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state,
> --
> 2.17.1
>
> On Jun 30, 2020, at 16:37, Kai-Heng Feng <[email protected]> wrote:
>
>
>> On Jun 10, 2020, at 15:55, Kai-Heng Feng <[email protected]> wrote:
>>
>> On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
>> becomes useless and never responds to cable hotplugging:
>> [ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
>> [ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
>>
>> Seems like the lspcon chip on the system only gets powered after the
>> cable is plugged.
>>
>> Consilidate lspcon_init() into lspcon_resume() to dynamically init
>> lspcon chip, and make HDMI port work.
>>
>> Signed-off-by: Kai-Heng Feng <[email protected]>
>
> A gentle ping...
Another gentle ping...
>
>> ---
>> v6:
>> - Rebase on latest for-linux-next.
>>
>> v5:
>> - Consolidate lspcon_resume() with lspcon_init().
>> - Move more logic into lspcon code.
>>
>> v4:
>> - Trust VBT in intel_infoframe_init().
>> - Init lspcon in intel_dp_detect().
>>
>> v3:
>> - Make sure it's handled under long HPD case.
>>
>> v2:
>> - Move lspcon_init() inside of intel_dp_hpd_pulse().
>>
>> drivers/gpu/drm/i915/display/intel_ddi.c | 19 +------
>> drivers/gpu/drm/i915/display/intel_dp.c | 10 ++--
>> drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +-
>> drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++---------
>> drivers/gpu/drm/i915/display/intel_lspcon.h | 3 +-
>> 5 files changed, 43 insertions(+), 55 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
>> index aa22465bb56e..af755b1aa24b 100644
>> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
>> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
>> @@ -4805,7 +4805,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>> {
>> struct intel_digital_port *intel_dig_port;
>> struct intel_encoder *encoder;
>> - bool init_hdmi, init_dp, init_lspcon = false;
>> + bool init_hdmi, init_dp;
>> enum phy phy = intel_port_to_phy(dev_priv, port);
>>
>> init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
>> @@ -4819,7 +4819,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>> * is initialized before lspcon.
>> */
>> init_dp = true;
>> - init_lspcon = true;
>> init_hdmi = false;
>> drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
>> port_name(port));
>> @@ -4904,22 +4903,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>> goto err;
>> }
>>
>> - if (init_lspcon) {
>> - if (lspcon_init(intel_dig_port))
>> - /* TODO: handle hdmi info frame part */
>> - drm_dbg_kms(&dev_priv->drm,
>> - "LSPCON init success on port %c\n",
>> - port_name(port));
>> - else
>> - /*
>> - * LSPCON init faied, but DP init was success, so
>> - * lets try to drive as DP++ port.
>> - */
>> - drm_err(&dev_priv->drm,
>> - "LSPCON init failed on port %c\n",
>> - port_name(port));
>> - }
>> -
>> if (INTEL_GEN(dev_priv) >= 11) {
>> if (intel_phy_is_tc(dev_priv, phy))
>> intel_dig_port->connected = intel_tc_port_connected;
>> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
>> index ed9e53c373a7..398a104158a8 100644
>> --- a/drivers/gpu/drm/i915/display/intel_dp.c
>> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
>> @@ -5962,15 +5962,14 @@ static enum drm_connector_status
>> intel_dp_detect_dpcd(struct intel_dp *intel_dp)
>> {
>> struct drm_i915_private *i915 = dp_to_i915(intel_dp);
>> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
>> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
>> u8 *dpcd = intel_dp->dpcd;
>> u8 type;
>>
>> if (WARN_ON(intel_dp_is_edp(intel_dp)))
>> return connector_status_connected;
>>
>> - if (lspcon->active)
>> - lspcon_resume(lspcon);
>> + lspcon_resume(dig_port);
>>
>> if (!intel_dp_get_dpcd(intel_dp))
>> return connector_status_disconnected;
>> @@ -7056,14 +7055,13 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
>> {
>> struct drm_i915_private *dev_priv = to_i915(encoder->dev);
>> struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
>> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
>> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
>> intel_wakeref_t wakeref;
>>
>> if (!HAS_DDI(dev_priv))
>> intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
>>
>> - if (lspcon->active)
>> - lspcon_resume(lspcon);
>> + lspcon_resume(dig_port);
>>
>> intel_dp->reset_link_params = true;
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
>> index 010f37240710..643ad2127931 100644
>> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
>> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
>> @@ -3155,7 +3155,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
>> intel_dig_port->set_infoframes = g4x_set_infoframes;
>> intel_dig_port->infoframes_enabled = g4x_infoframes_enabled;
>> } else if (HAS_DDI(dev_priv)) {
>> - if (intel_dig_port->lspcon.active) {
>> + if (intel_bios_is_lspcon_present(dev_priv,
>> + intel_dig_port->base.port)) {
>> intel_dig_port->write_infoframe = lspcon_write_infoframe;
>> intel_dig_port->read_infoframe = lspcon_read_infoframe;
>> intel_dig_port->set_infoframes = lspcon_set_infoframes;
>> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
>> index 6ff7b226f0a1..e3dde4c25604 100644
>> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
>> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
>> @@ -525,44 +525,17 @@ u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
>> return 0;
>> }
>>
>> -void lspcon_resume(struct intel_lspcon *lspcon)
>> -{
>> - enum drm_lspcon_mode expected_mode;
>> -
>> - if (lspcon_wake_native_aux_ch(lspcon)) {
>> - expected_mode = DRM_LSPCON_MODE_PCON;
>> - lspcon_resume_in_pcon_wa(lspcon);
>> - } else {
>> - expected_mode = DRM_LSPCON_MODE_LS;
>> - }
>> -
>> - if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
>> - return;
>> -
>> - if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
>> - DRM_ERROR("LSPCON resume failed\n");
>> - else
>> - DRM_DEBUG_KMS("LSPCON resume success\n");
>> -}
>> -
>> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
>> {
>> lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
>> }
>>
>> -bool lspcon_init(struct intel_digital_port *intel_dig_port)
>> +static bool lspcon_init(struct intel_digital_port *intel_dig_port)
>> {
>> struct intel_dp *dp = &intel_dig_port->dp;
>> struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
>> - struct drm_device *dev = intel_dig_port->base.base.dev;
>> - struct drm_i915_private *dev_priv = to_i915(dev);
>> struct drm_connector *connector = &dp->attached_connector->base;
>>
>> - if (!HAS_LSPCON(dev_priv)) {
>> - DRM_ERROR("LSPCON is not supported on this platform\n");
>> - return false;
>> - }
>> -
>> lspcon->active = false;
>> lspcon->mode = DRM_LSPCON_MODE_INVALID;
>>
>> @@ -586,3 +559,37 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
>> DRM_DEBUG_KMS("Success: LSPCON init\n");
>> return true;
>> }
>> +
>> +void lspcon_resume(struct intel_digital_port *intel_dig_port)
>> +{
>> + struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
>> + struct drm_device *dev = intel_dig_port->base.base.dev;
>> + struct drm_i915_private *dev_priv = to_i915(dev);
>> + enum drm_lspcon_mode expected_mode;
>> +
>> + if (!intel_bios_is_lspcon_present(dev_priv, intel_dig_port->base.port))
>> + return;
>> +
>> + if (!lspcon->active) {
>> + if (!lspcon_init(intel_dig_port)) {
>> + DRM_ERROR("LSPCON init failed on port %c\n",
>> + port_name(intel_dig_port->base.port));
>> + return;
>> + }
>> + }
>> +
>> + if (lspcon_wake_native_aux_ch(lspcon)) {
>> + expected_mode = DRM_LSPCON_MODE_PCON;
>> + lspcon_resume_in_pcon_wa(lspcon);
>> + } else {
>> + expected_mode = DRM_LSPCON_MODE_LS;
>> + }
>> +
>> + if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
>> + return;
>> +
>> + if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
>> + DRM_ERROR("LSPCON resume failed\n");
>> + else
>> + DRM_DEBUG_KMS("LSPCON resume success\n");
>> +}
>> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
>> index 37cfddf8a9c5..169db35db13e 100644
>> --- a/drivers/gpu/drm/i915/display/intel_lspcon.h
>> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
>> @@ -15,8 +15,7 @@ struct intel_digital_port;
>> struct intel_encoder;
>> struct intel_lspcon;
>>
>> -bool lspcon_init(struct intel_digital_port *intel_dig_port);
>> -void lspcon_resume(struct intel_lspcon *lspcon);
>> +void lspcon_resume(struct intel_digital_port *intel_dig_port);
>> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
>> void lspcon_write_infoframe(struct intel_encoder *encoder,
>> const struct intel_crtc_state *crtc_state,
>> --
>> 2.17.1
>>
>
Hi Jani,
> On Jul 10, 2020, at 23:48, Kai-Heng Feng <[email protected]> wrote:
>
>
>
>> On Jun 30, 2020, at 16:37, Kai-Heng Feng <[email protected]> wrote:
>>
>>
>>> On Jun 10, 2020, at 15:55, Kai-Heng Feng <[email protected]> wrote:
>>>
>>> On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
>>> becomes useless and never responds to cable hotplugging:
>>> [ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
>>> [ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
>>>
>>> Seems like the lspcon chip on the system only gets powered after the
>>> cable is plugged.
>>>
>>> Consilidate lspcon_init() into lspcon_resume() to dynamically init
>>> lspcon chip, and make HDMI port work.
>>>
>>> Signed-off-by: Kai-Heng Feng <[email protected]>
>>
>> A gentle ping...
>
> Another gentle ping...
Can you please help reviewing this? Thanks!
Kai-Heng
>
>>
>>> ---
>>> v6:
>>> - Rebase on latest for-linux-next.
>>>
>>> v5:
>>> - Consolidate lspcon_resume() with lspcon_init().
>>> - Move more logic into lspcon code.
>>>
>>> v4:
>>> - Trust VBT in intel_infoframe_init().
>>> - Init lspcon in intel_dp_detect().
>>>
>>> v3:
>>> - Make sure it's handled under long HPD case.
>>>
>>> v2:
>>> - Move lspcon_init() inside of intel_dp_hpd_pulse().
>>>
>>> drivers/gpu/drm/i915/display/intel_ddi.c | 19 +------
>>> drivers/gpu/drm/i915/display/intel_dp.c | 10 ++--
>>> drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +-
>>> drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++---------
>>> drivers/gpu/drm/i915/display/intel_lspcon.h | 3 +-
>>> 5 files changed, 43 insertions(+), 55 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
>>> index aa22465bb56e..af755b1aa24b 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
>>> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
>>> @@ -4805,7 +4805,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>>> {
>>> struct intel_digital_port *intel_dig_port;
>>> struct intel_encoder *encoder;
>>> - bool init_hdmi, init_dp, init_lspcon = false;
>>> + bool init_hdmi, init_dp;
>>> enum phy phy = intel_port_to_phy(dev_priv, port);
>>>
>>> init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
>>> @@ -4819,7 +4819,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>>> * is initialized before lspcon.
>>> */
>>> init_dp = true;
>>> - init_lspcon = true;
>>> init_hdmi = false;
>>> drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
>>> port_name(port));
>>> @@ -4904,22 +4903,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
>>> goto err;
>>> }
>>>
>>> - if (init_lspcon) {
>>> - if (lspcon_init(intel_dig_port))
>>> - /* TODO: handle hdmi info frame part */
>>> - drm_dbg_kms(&dev_priv->drm,
>>> - "LSPCON init success on port %c\n",
>>> - port_name(port));
>>> - else
>>> - /*
>>> - * LSPCON init faied, but DP init was success, so
>>> - * lets try to drive as DP++ port.
>>> - */
>>> - drm_err(&dev_priv->drm,
>>> - "LSPCON init failed on port %c\n",
>>> - port_name(port));
>>> - }
>>> -
>>> if (INTEL_GEN(dev_priv) >= 11) {
>>> if (intel_phy_is_tc(dev_priv, phy))
>>> intel_dig_port->connected = intel_tc_port_connected;
>>> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
>>> index ed9e53c373a7..398a104158a8 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_dp.c
>>> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
>>> @@ -5962,15 +5962,14 @@ static enum drm_connector_status
>>> intel_dp_detect_dpcd(struct intel_dp *intel_dp)
>>> {
>>> struct drm_i915_private *i915 = dp_to_i915(intel_dp);
>>> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
>>> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
>>> u8 *dpcd = intel_dp->dpcd;
>>> u8 type;
>>>
>>> if (WARN_ON(intel_dp_is_edp(intel_dp)))
>>> return connector_status_connected;
>>>
>>> - if (lspcon->active)
>>> - lspcon_resume(lspcon);
>>> + lspcon_resume(dig_port);
>>>
>>> if (!intel_dp_get_dpcd(intel_dp))
>>> return connector_status_disconnected;
>>> @@ -7056,14 +7055,13 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
>>> {
>>> struct drm_i915_private *dev_priv = to_i915(encoder->dev);
>>> struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
>>> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
>>> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
>>> intel_wakeref_t wakeref;
>>>
>>> if (!HAS_DDI(dev_priv))
>>> intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
>>>
>>> - if (lspcon->active)
>>> - lspcon_resume(lspcon);
>>> + lspcon_resume(dig_port);
>>>
>>> intel_dp->reset_link_params = true;
>>>
>>> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
>>> index 010f37240710..643ad2127931 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
>>> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
>>> @@ -3155,7 +3155,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
>>> intel_dig_port->set_infoframes = g4x_set_infoframes;
>>> intel_dig_port->infoframes_enabled = g4x_infoframes_enabled;
>>> } else if (HAS_DDI(dev_priv)) {
>>> - if (intel_dig_port->lspcon.active) {
>>> + if (intel_bios_is_lspcon_present(dev_priv,
>>> + intel_dig_port->base.port)) {
>>> intel_dig_port->write_infoframe = lspcon_write_infoframe;
>>> intel_dig_port->read_infoframe = lspcon_read_infoframe;
>>> intel_dig_port->set_infoframes = lspcon_set_infoframes;
>>> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
>>> index 6ff7b226f0a1..e3dde4c25604 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
>>> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
>>> @@ -525,44 +525,17 @@ u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
>>> return 0;
>>> }
>>>
>>> -void lspcon_resume(struct intel_lspcon *lspcon)
>>> -{
>>> - enum drm_lspcon_mode expected_mode;
>>> -
>>> - if (lspcon_wake_native_aux_ch(lspcon)) {
>>> - expected_mode = DRM_LSPCON_MODE_PCON;
>>> - lspcon_resume_in_pcon_wa(lspcon);
>>> - } else {
>>> - expected_mode = DRM_LSPCON_MODE_LS;
>>> - }
>>> -
>>> - if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
>>> - return;
>>> -
>>> - if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
>>> - DRM_ERROR("LSPCON resume failed\n");
>>> - else
>>> - DRM_DEBUG_KMS("LSPCON resume success\n");
>>> -}
>>> -
>>> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
>>> {
>>> lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
>>> }
>>>
>>> -bool lspcon_init(struct intel_digital_port *intel_dig_port)
>>> +static bool lspcon_init(struct intel_digital_port *intel_dig_port)
>>> {
>>> struct intel_dp *dp = &intel_dig_port->dp;
>>> struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
>>> - struct drm_device *dev = intel_dig_port->base.base.dev;
>>> - struct drm_i915_private *dev_priv = to_i915(dev);
>>> struct drm_connector *connector = &dp->attached_connector->base;
>>>
>>> - if (!HAS_LSPCON(dev_priv)) {
>>> - DRM_ERROR("LSPCON is not supported on this platform\n");
>>> - return false;
>>> - }
>>> -
>>> lspcon->active = false;
>>> lspcon->mode = DRM_LSPCON_MODE_INVALID;
>>>
>>> @@ -586,3 +559,37 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
>>> DRM_DEBUG_KMS("Success: LSPCON init\n");
>>> return true;
>>> }
>>> +
>>> +void lspcon_resume(struct intel_digital_port *intel_dig_port)
>>> +{
>>> + struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
>>> + struct drm_device *dev = intel_dig_port->base.base.dev;
>>> + struct drm_i915_private *dev_priv = to_i915(dev);
>>> + enum drm_lspcon_mode expected_mode;
>>> +
>>> + if (!intel_bios_is_lspcon_present(dev_priv, intel_dig_port->base.port))
>>> + return;
>>> +
>>> + if (!lspcon->active) {
>>> + if (!lspcon_init(intel_dig_port)) {
>>> + DRM_ERROR("LSPCON init failed on port %c\n",
>>> + port_name(intel_dig_port->base.port));
>>> + return;
>>> + }
>>> + }
>>> +
>>> + if (lspcon_wake_native_aux_ch(lspcon)) {
>>> + expected_mode = DRM_LSPCON_MODE_PCON;
>>> + lspcon_resume_in_pcon_wa(lspcon);
>>> + } else {
>>> + expected_mode = DRM_LSPCON_MODE_LS;
>>> + }
>>> +
>>> + if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
>>> + return;
>>> +
>>> + if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
>>> + DRM_ERROR("LSPCON resume failed\n");
>>> + else
>>> + DRM_DEBUG_KMS("LSPCON resume success\n");
>>> +}
>>> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
>>> index 37cfddf8a9c5..169db35db13e 100644
>>> --- a/drivers/gpu/drm/i915/display/intel_lspcon.h
>>> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
>>> @@ -15,8 +15,7 @@ struct intel_digital_port;
>>> struct intel_encoder;
>>> struct intel_lspcon;
>>>
>>> -bool lspcon_init(struct intel_digital_port *intel_dig_port);
>>> -void lspcon_resume(struct intel_lspcon *lspcon);
>>> +void lspcon_resume(struct intel_digital_port *intel_dig_port);
>>> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
>>> void lspcon_write_infoframe(struct intel_encoder *encoder,
>>> const struct intel_crtc_state *crtc_state,
>>> --
>>> 2.17.1
On Wed, Jun 10, 2020 at 03:55:10PM +0800, Kai-Heng Feng wrote:
> On HP 800 G4 DM, if HDMI cable isn't plugged before boot, the HDMI port
> becomes useless and never responds to cable hotplugging:
> [ 3.031904] [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
> [ 3.031945] [drm:intel_ddi_init [i915]] *ERROR* LSPCON init failed on port D
>
> Seems like the lspcon chip on the system only gets powered after the
> cable is plugged.
>
> Consilidate lspcon_init() into lspcon_resume() to dynamically init
> lspcon chip, and make HDMI port work.
>
> Signed-off-by: Kai-Heng Feng <[email protected]>
> ---
> v6:
> - Rebase on latest for-linux-next.
>
> v5:
> - Consolidate lspcon_resume() with lspcon_init().
> - Move more logic into lspcon code.
>
> v4:
> - Trust VBT in intel_infoframe_init().
> - Init lspcon in intel_dp_detect().
>
> v3:
> - Make sure it's handled under long HPD case.
>
> v2:
> - Move lspcon_init() inside of intel_dp_hpd_pulse().
Hoisted the changelog above --- where it belongs in drm land,
amended with
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/203
and pushed the patch to dinq.
Thanks, and sorry for the horrendous latency.
PS. This will cause some headache for Uma's lspcon HDR stuff, but
so be it.
>
> drivers/gpu/drm/i915/display/intel_ddi.c | 19 +------
> drivers/gpu/drm/i915/display/intel_dp.c | 10 ++--
> drivers/gpu/drm/i915/display/intel_hdmi.c | 3 +-
> drivers/gpu/drm/i915/display/intel_lspcon.c | 63 ++++++++++++---------
> drivers/gpu/drm/i915/display/intel_lspcon.h | 3 +-
> 5 files changed, 43 insertions(+), 55 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index aa22465bb56e..af755b1aa24b 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -4805,7 +4805,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> {
> struct intel_digital_port *intel_dig_port;
> struct intel_encoder *encoder;
> - bool init_hdmi, init_dp, init_lspcon = false;
> + bool init_hdmi, init_dp;
> enum phy phy = intel_port_to_phy(dev_priv, port);
>
> init_hdmi = intel_bios_port_supports_dvi(dev_priv, port) ||
> @@ -4819,7 +4819,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> * is initialized before lspcon.
> */
> init_dp = true;
> - init_lspcon = true;
> init_hdmi = false;
> drm_dbg_kms(&dev_priv->drm, "VBT says port %c has lspcon\n",
> port_name(port));
> @@ -4904,22 +4903,6 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
> goto err;
> }
>
> - if (init_lspcon) {
> - if (lspcon_init(intel_dig_port))
> - /* TODO: handle hdmi info frame part */
> - drm_dbg_kms(&dev_priv->drm,
> - "LSPCON init success on port %c\n",
> - port_name(port));
> - else
> - /*
> - * LSPCON init faied, but DP init was success, so
> - * lets try to drive as DP++ port.
> - */
> - drm_err(&dev_priv->drm,
> - "LSPCON init failed on port %c\n",
> - port_name(port));
> - }
> -
> if (INTEL_GEN(dev_priv) >= 11) {
> if (intel_phy_is_tc(dev_priv, phy))
> intel_dig_port->connected = intel_tc_port_connected;
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index ed9e53c373a7..398a104158a8 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5962,15 +5962,14 @@ static enum drm_connector_status
> intel_dp_detect_dpcd(struct intel_dp *intel_dp)
> {
> struct drm_i915_private *i915 = dp_to_i915(intel_dp);
> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> u8 *dpcd = intel_dp->dpcd;
> u8 type;
>
> if (WARN_ON(intel_dp_is_edp(intel_dp)))
> return connector_status_connected;
>
> - if (lspcon->active)
> - lspcon_resume(lspcon);
> + lspcon_resume(dig_port);
>
> if (!intel_dp_get_dpcd(intel_dp))
> return connector_status_disconnected;
> @@ -7056,14 +7055,13 @@ void intel_dp_encoder_reset(struct drm_encoder *encoder)
> {
> struct drm_i915_private *dev_priv = to_i915(encoder->dev);
> struct intel_dp *intel_dp = enc_to_intel_dp(to_intel_encoder(encoder));
> - struct intel_lspcon *lspcon = dp_to_lspcon(intel_dp);
> + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
> intel_wakeref_t wakeref;
>
> if (!HAS_DDI(dev_priv))
> intel_dp->DP = intel_de_read(dev_priv, intel_dp->output_reg);
>
> - if (lspcon->active)
> - lspcon_resume(lspcon);
> + lspcon_resume(dig_port);
>
> intel_dp->reset_link_params = true;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index 010f37240710..643ad2127931 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -3155,7 +3155,8 @@ void intel_infoframe_init(struct intel_digital_port *intel_dig_port)
> intel_dig_port->set_infoframes = g4x_set_infoframes;
> intel_dig_port->infoframes_enabled = g4x_infoframes_enabled;
> } else if (HAS_DDI(dev_priv)) {
> - if (intel_dig_port->lspcon.active) {
> + if (intel_bios_is_lspcon_present(dev_priv,
> + intel_dig_port->base.port)) {
> intel_dig_port->write_infoframe = lspcon_write_infoframe;
> intel_dig_port->read_infoframe = lspcon_read_infoframe;
> intel_dig_port->set_infoframes = lspcon_set_infoframes;
> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
> index 6ff7b226f0a1..e3dde4c25604 100644
> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
> @@ -525,44 +525,17 @@ u32 lspcon_infoframes_enabled(struct intel_encoder *encoder,
> return 0;
> }
>
> -void lspcon_resume(struct intel_lspcon *lspcon)
> -{
> - enum drm_lspcon_mode expected_mode;
> -
> - if (lspcon_wake_native_aux_ch(lspcon)) {
> - expected_mode = DRM_LSPCON_MODE_PCON;
> - lspcon_resume_in_pcon_wa(lspcon);
> - } else {
> - expected_mode = DRM_LSPCON_MODE_LS;
> - }
> -
> - if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
> - return;
> -
> - if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
> - DRM_ERROR("LSPCON resume failed\n");
> - else
> - DRM_DEBUG_KMS("LSPCON resume success\n");
> -}
> -
> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon)
> {
> lspcon_wait_mode(lspcon, DRM_LSPCON_MODE_PCON);
> }
>
> -bool lspcon_init(struct intel_digital_port *intel_dig_port)
> +static bool lspcon_init(struct intel_digital_port *intel_dig_port)
> {
> struct intel_dp *dp = &intel_dig_port->dp;
> struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
> - struct drm_device *dev = intel_dig_port->base.base.dev;
> - struct drm_i915_private *dev_priv = to_i915(dev);
> struct drm_connector *connector = &dp->attached_connector->base;
>
> - if (!HAS_LSPCON(dev_priv)) {
> - DRM_ERROR("LSPCON is not supported on this platform\n");
> - return false;
> - }
> -
> lspcon->active = false;
> lspcon->mode = DRM_LSPCON_MODE_INVALID;
>
> @@ -586,3 +559,37 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
> DRM_DEBUG_KMS("Success: LSPCON init\n");
> return true;
> }
> +
> +void lspcon_resume(struct intel_digital_port *intel_dig_port)
> +{
> + struct intel_lspcon *lspcon = &intel_dig_port->lspcon;
> + struct drm_device *dev = intel_dig_port->base.base.dev;
> + struct drm_i915_private *dev_priv = to_i915(dev);
> + enum drm_lspcon_mode expected_mode;
> +
> + if (!intel_bios_is_lspcon_present(dev_priv, intel_dig_port->base.port))
> + return;
> +
> + if (!lspcon->active) {
> + if (!lspcon_init(intel_dig_port)) {
> + DRM_ERROR("LSPCON init failed on port %c\n",
> + port_name(intel_dig_port->base.port));
> + return;
> + }
> + }
> +
> + if (lspcon_wake_native_aux_ch(lspcon)) {
> + expected_mode = DRM_LSPCON_MODE_PCON;
> + lspcon_resume_in_pcon_wa(lspcon);
> + } else {
> + expected_mode = DRM_LSPCON_MODE_LS;
> + }
> +
> + if (lspcon_wait_mode(lspcon, expected_mode) == DRM_LSPCON_MODE_PCON)
> + return;
> +
> + if (lspcon_change_mode(lspcon, DRM_LSPCON_MODE_PCON))
> + DRM_ERROR("LSPCON resume failed\n");
> + else
> + DRM_DEBUG_KMS("LSPCON resume success\n");
> +}
> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.h b/drivers/gpu/drm/i915/display/intel_lspcon.h
> index 37cfddf8a9c5..169db35db13e 100644
> --- a/drivers/gpu/drm/i915/display/intel_lspcon.h
> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.h
> @@ -15,8 +15,7 @@ struct intel_digital_port;
> struct intel_encoder;
> struct intel_lspcon;
>
> -bool lspcon_init(struct intel_digital_port *intel_dig_port);
> -void lspcon_resume(struct intel_lspcon *lspcon);
> +void lspcon_resume(struct intel_digital_port *intel_dig_port);
> void lspcon_wait_pcon_mode(struct intel_lspcon *lspcon);
> void lspcon_write_infoframe(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state,
> --
> 2.17.1
--
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Intel