diff mbox series

[v15,2/2] drm/i915: Allow "max bpc" property to limit pipe_bpp

Message ID 20181023014400.16055-1-manasi.d.navare@intel.com (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Navare, Manasi Oct. 23, 2018, 1:44 a.m. UTC
From: Radhakrishna Sripada <radhakrishna.sripada@intel.com>

Use the newly added "max bpc" connector property to limit pipe bpp.

V3: Use drm_connector_state to access the "max bpc" property
V4: Initialize the drm property, add suuport to DP(Ville)
V5: Use the property in the connector and fix CI failure(Ville)
V6: Use the core function to attach max_bpc property, remove the redundant
    clamping of pipe bpp based on connector info
V7: Fix Checkpatch warnings
V9: Cleanup connected_sink_max_bpp and fix initial value in DP(Ville)
V12: Fix debug message(Ville)
V13: Remove the redundant check and simplify the check logic(Stan)
V14: Fix the check in connected_sink_max_bpp(Stan)
v15 (From Manasi): Add missing break (Stan)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Kishore Kadiyala <kishore.kadiyala@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 50 ++++++++++++++++------------
 drivers/gpu/drm/i915/intel_dp.c      |  4 +++
 drivers/gpu/drm/i915/intel_hdmi.c    |  5 +++
 3 files changed, 38 insertions(+), 21 deletions(-)

Comments

Stanislav Lisovskiy Oct. 23, 2018, noon UTC | #1
On Mon, 2018-10-22 at 18:44 -0700, Manasi Navare wrote:
> From: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
> 
> Use the newly added "max bpc" connector property to limit pipe bpp.
> 
> V3: Use drm_connector_state to access the "max bpc" property
> V4: Initialize the drm property, add suuport to DP(Ville)
> V5: Use the property in the connector and fix CI failure(Ville)
> V6: Use the core function to attach max_bpc property, remove the
> redundant
>     clamping of pipe bpp based on connector info
> V7: Fix Checkpatch warnings
> V9: Cleanup connected_sink_max_bpp and fix initial value in DP(Ville)
> V12: Fix debug message(Ville)
> V13: Remove the redundant check and simplify the check logic(Stan)
> V14: Fix the check in connected_sink_max_bpp(Stan)
> v15 (From Manasi): Add missing break (Stan)
> 
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> Cc: Kishore Kadiyala <kishore.kadiyala@intel.com>
> Cc: Manasi Navare <manasi.d.navare@intel.com>
> Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 50 ++++++++++++++++--------
> ----
>  drivers/gpu/drm/i915/intel_dp.c      |  4 +++
>  drivers/gpu/drm/i915/intel_hdmi.c    |  5 +++
>  3 files changed, 38 insertions(+), 21 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index fc7e3b0bd95c..2bbcb382770d 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -10856,30 +10856,38 @@ static void
> intel_modeset_update_connector_atomic_state(struct drm_device *dev)
>  	drm_connector_list_iter_end(&conn_iter);
>  }
>  
> -static void
> -connected_sink_compute_bpp(struct intel_connector *connector,
> -			   struct intel_crtc_state *pipe_config)
> +static int
> +connected_sink_max_bpp(const struct drm_connector_state *conn_state,
> +		       struct intel_crtc_state *pipe_config)
>  {
> -	const struct drm_display_info *info = &connector-
> >base.display_info;
> -	int bpp = pipe_config->pipe_bpp;
> -
> -	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp
> constrains\n",
> -		      connector->base.base.id,
> -		      connector->base.name);
> +	int bpp;
> +	struct drm_display_info *info = &conn_state->connector-
> >display_info;
>  
> -	/* Don't use an invalid EDID bpc value */
> -	if (info->bpc != 0 && info->bpc * 3 < bpp) {
> -		DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID
> reported max of %d\n",
> -			      bpp, info->bpc * 3);
> -		pipe_config->pipe_bpp = info->bpc * 3;
> +	switch (conn_state->max_bpc) {
> +	case 6 ... 7:
> +		bpp = 6 * 3;
> +		break;
> +	case 8 ... 9:
> +		bpp = 8 * 3;
> +		break;
> +	case 10 ... 11:
> +		bpp = 10 * 3;
> +		break;
> +	case 12:
> +		bpp = 12 * 3;
> +		break;
> +	default:
> +		return -EINVAL;
>  	}
>  
> -	/* Clamp bpp to 8 on screens without EDID 1.4 */
> -	if (info->bpc == 0 && bpp > 24) {
> -		DRM_DEBUG_KMS("clamping display bpp (was %d) to
> default limit of 24\n",
> -			      bpp);
> -		pipe_config->pipe_bpp = 24;
> +	if (bpp < pipe_config->pipe_bpp) {
> +		DRM_DEBUG_KMS("Limiting display bpp to %d instead of
> Edid bpp "
> +			      "%d, requested bpp %d, max platform
> bpp %d\n", bpp,
> +			      3 * info->bpc, 3 * conn_state-
> >max_requested_bpc,
> +			      pipe_config->pipe_bpp);
> +		pipe_config->pipe_bpp = bpp;
>  	}
> +	return 0;
>  }
>  
>  static int
> @@ -10910,8 +10918,8 @@ compute_baseline_pipe_bpp(struct intel_crtc
> *crtc,
>  		if (connector_state->crtc != &crtc->base)
>  			continue;
>  
> -		connected_sink_compute_bpp(to_intel_connector(connec
> tor),
> -					   pipe_config);
> +		if (connected_sink_max_bpp(connector_state,
> pipe_config) < 0)
> +			return -EINVAL;
>  	}
>  
>  	return bpp;
> diff --git a/drivers/gpu/drm/i915/intel_dp.c
> b/drivers/gpu/drm/i915/intel_dp.c
> index 3384a9bbdafd..54efa0478ba0 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -5735,6 +5735,10 @@ intel_dp_add_properties(struct intel_dp
> *intel_dp, struct drm_connector *connect
>  		intel_attach_force_audio_property(connector);
>  
>  	intel_attach_broadcast_rgb_property(connector);
> +	if (HAS_GMCH_DISPLAY(dev_priv))
> +		drm_connector_attach_max_bpc_property(connector, 6,
> 10);
> +	else if (INTEL_GEN(dev_priv) >= 5)
> +		drm_connector_attach_max_bpc_property(connector, 6,
> 12);
>  
>  	if (intel_dp_is_edp(intel_dp)) {
>  		u32 allowed_scalers;
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
> b/drivers/gpu/drm/i915/intel_hdmi.c
> index 89d5e3984452..ca82aedb401e 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -2106,11 +2106,16 @@ static const struct drm_encoder_funcs
> intel_hdmi_enc_funcs = {
>  static void
>  intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct
> drm_connector *connector)
>  {
> +	struct drm_i915_private *dev_priv = to_i915(connector->dev);
> +
>  	intel_attach_force_audio_property(connector);
>  	intel_attach_broadcast_rgb_property(connector);
>  	intel_attach_aspect_ratio_property(connector);
>  	drm_connector_attach_content_type_property(connector);
>  	connector->state->picture_aspect_ratio =
> HDMI_PICTURE_ASPECT_NONE;
> +
> +	if (!HAS_GMCH_DISPLAY(dev_priv))
> +		drm_connector_attach_max_bpc_property(connector, 8,
> 12);
>  }
>  
>  /*

Looks good to me.
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Rodrigo Vivi Nov. 2, 2018, 4:18 p.m. UTC | #2
On Tue, Oct 23, 2018 at 12:00:35PM +0000, Lisovskiy, Stanislav wrote:
> On Mon, 2018-10-22 at 18:44 -0700, Manasi Navare wrote:
> > From: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
> > 
> > Use the newly added "max bpc" connector property to limit pipe bpp.
> > 
> > V3: Use drm_connector_state to access the "max bpc" property
> > V4: Initialize the drm property, add suuport to DP(Ville)
> > V5: Use the property in the connector and fix CI failure(Ville)
> > V6: Use the core function to attach max_bpc property, remove the
> > redundant
> >     clamping of pipe bpp based on connector info
> > V7: Fix Checkpatch warnings
> > V9: Cleanup connected_sink_max_bpp and fix initial value in DP(Ville)
> > V12: Fix debug message(Ville)
> > V13: Remove the redundant check and simplify the check logic(Stan)
> > V14: Fix the check in connected_sink_max_bpp(Stan)
> > v15 (From Manasi): Add missing break (Stan)
> > 
> > Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> > Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
> > Cc: Kishore Kadiyala <kishore.kadiyala@intel.com>
> > Cc: Manasi Navare <manasi.d.navare@intel.com>
> > Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> > Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_display.c | 50 ++++++++++++++++--------
> > ----
> >  drivers/gpu/drm/i915/intel_dp.c      |  4 +++
> >  drivers/gpu/drm/i915/intel_hdmi.c    |  5 +++
> >  3 files changed, 38 insertions(+), 21 deletions(-)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_display.c
> > b/drivers/gpu/drm/i915/intel_display.c
> > index fc7e3b0bd95c..2bbcb382770d 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/gpu/drm/i915/intel_display.c
> > @@ -10856,30 +10856,38 @@ static void
> > intel_modeset_update_connector_atomic_state(struct drm_device *dev)
> >  	drm_connector_list_iter_end(&conn_iter);
> >  }
> >  
> > -static void
> > -connected_sink_compute_bpp(struct intel_connector *connector,
> > -			   struct intel_crtc_state *pipe_config)
> > +static int
> > +connected_sink_max_bpp(const struct drm_connector_state *conn_state,
> > +		       struct intel_crtc_state *pipe_config)
> >  {
> > -	const struct drm_display_info *info = &connector-
> > >base.display_info;
> > -	int bpp = pipe_config->pipe_bpp;
> > -
> > -	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp
> > constrains\n",
> > -		      connector->base.base.id,
> > -		      connector->base.name);
> > +	int bpp;
> > +	struct drm_display_info *info = &conn_state->connector-
> > >display_info;
> >  
> > -	/* Don't use an invalid EDID bpc value */
> > -	if (info->bpc != 0 && info->bpc * 3 < bpp) {
> > -		DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID
> > reported max of %d\n",
> > -			      bpp, info->bpc * 3);
> > -		pipe_config->pipe_bpp = info->bpc * 3;
> > +	switch (conn_state->max_bpc) {
> > +	case 6 ... 7:
> > +		bpp = 6 * 3;
> > +		break;
> > +	case 8 ... 9:
> > +		bpp = 8 * 3;
> > +		break;
> > +	case 10 ... 11:
> > +		bpp = 10 * 3;
> > +		break;
> > +	case 12:
> > +		bpp = 12 * 3;
> > +		break;
> > +	default:
> > +		return -EINVAL;
> >  	}
> >  
> > -	/* Clamp bpp to 8 on screens without EDID 1.4 */
> > -	if (info->bpc == 0 && bpp > 24) {
> > -		DRM_DEBUG_KMS("clamping display bpp (was %d) to
> > default limit of 24\n",
> > -			      bpp);
> > -		pipe_config->pipe_bpp = 24;
> > +	if (bpp < pipe_config->pipe_bpp) {
> > +		DRM_DEBUG_KMS("Limiting display bpp to %d instead of
> > Edid bpp "
> > +			      "%d, requested bpp %d, max platform
> > bpp %d\n", bpp,
> > +			      3 * info->bpc, 3 * conn_state-
> > >max_requested_bpc,
> > +			      pipe_config->pipe_bpp);
> > +		pipe_config->pipe_bpp = bpp;
> >  	}
> > +	return 0;
> >  }
> >  
> >  static int
> > @@ -10910,8 +10918,8 @@ compute_baseline_pipe_bpp(struct intel_crtc
> > *crtc,
> >  		if (connector_state->crtc != &crtc->base)
> >  			continue;
> >  
> > -		connected_sink_compute_bpp(to_intel_connector(connec
> > tor),
> > -					   pipe_config);
> > +		if (connected_sink_max_bpp(connector_state,
> > pipe_config) < 0)
> > +			return -EINVAL;
> >  	}
> >  
> >  	return bpp;
> > diff --git a/drivers/gpu/drm/i915/intel_dp.c
> > b/drivers/gpu/drm/i915/intel_dp.c
> > index 3384a9bbdafd..54efa0478ba0 100644
> > --- a/drivers/gpu/drm/i915/intel_dp.c
> > +++ b/drivers/gpu/drm/i915/intel_dp.c
> > @@ -5735,6 +5735,10 @@ intel_dp_add_properties(struct intel_dp
> > *intel_dp, struct drm_connector *connect
> >  		intel_attach_force_audio_property(connector);
> >  
> >  	intel_attach_broadcast_rgb_property(connector);
> > +	if (HAS_GMCH_DISPLAY(dev_priv))
> > +		drm_connector_attach_max_bpc_property(connector, 6,
> > 10);
> > +	else if (INTEL_GEN(dev_priv) >= 5)
> > +		drm_connector_attach_max_bpc_property(connector, 6,
> > 12);
> >  
> >  	if (intel_dp_is_edp(intel_dp)) {
> >  		u32 allowed_scalers;
> > diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
> > b/drivers/gpu/drm/i915/intel_hdmi.c
> > index 89d5e3984452..ca82aedb401e 100644
> > --- a/drivers/gpu/drm/i915/intel_hdmi.c
> > +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> > @@ -2106,11 +2106,16 @@ static const struct drm_encoder_funcs
> > intel_hdmi_enc_funcs = {
> >  static void
> >  intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct
> > drm_connector *connector)
> >  {
> > +	struct drm_i915_private *dev_priv = to_i915(connector->dev);
> > +
> >  	intel_attach_force_audio_property(connector);
> >  	intel_attach_broadcast_rgb_property(connector);
> >  	intel_attach_aspect_ratio_property(connector);
> >  	drm_connector_attach_content_type_property(connector);
> >  	connector->state->picture_aspect_ratio =
> > HDMI_PICTURE_ASPECT_NONE;
> > +
> > +	if (!HAS_GMCH_DISPLAY(dev_priv))
> > +		drm_connector_attach_max_bpc_property(connector, 8,
> > 12);
> >  }
> >  
> >  /*
> 
> Looks good to me.
> Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

pushed to dinq.

thanks for patches and reviews

> 
> -- 
> Best Regards,
> 
> Lisovskiy Stanislav
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fc7e3b0bd95c..2bbcb382770d 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10856,30 +10856,38 @@  static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
 	drm_connector_list_iter_end(&conn_iter);
 }
 
-static void
-connected_sink_compute_bpp(struct intel_connector *connector,
-			   struct intel_crtc_state *pipe_config)
+static int
+connected_sink_max_bpp(const struct drm_connector_state *conn_state,
+		       struct intel_crtc_state *pipe_config)
 {
-	const struct drm_display_info *info = &connector->base.display_info;
-	int bpp = pipe_config->pipe_bpp;
-
-	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] checking for sink bpp constrains\n",
-		      connector->base.base.id,
-		      connector->base.name);
+	int bpp;
+	struct drm_display_info *info = &conn_state->connector->display_info;
 
-	/* Don't use an invalid EDID bpc value */
-	if (info->bpc != 0 && info->bpc * 3 < bpp) {
-		DRM_DEBUG_KMS("clamping display bpp (was %d) to EDID reported max of %d\n",
-			      bpp, info->bpc * 3);
-		pipe_config->pipe_bpp = info->bpc * 3;
+	switch (conn_state->max_bpc) {
+	case 6 ... 7:
+		bpp = 6 * 3;
+		break;
+	case 8 ... 9:
+		bpp = 8 * 3;
+		break;
+	case 10 ... 11:
+		bpp = 10 * 3;
+		break;
+	case 12:
+		bpp = 12 * 3;
+		break;
+	default:
+		return -EINVAL;
 	}
 
-	/* Clamp bpp to 8 on screens without EDID 1.4 */
-	if (info->bpc == 0 && bpp > 24) {
-		DRM_DEBUG_KMS("clamping display bpp (was %d) to default limit of 24\n",
-			      bpp);
-		pipe_config->pipe_bpp = 24;
+	if (bpp < pipe_config->pipe_bpp) {
+		DRM_DEBUG_KMS("Limiting display bpp to %d instead of Edid bpp "
+			      "%d, requested bpp %d, max platform bpp %d\n", bpp,
+			      3 * info->bpc, 3 * conn_state->max_requested_bpc,
+			      pipe_config->pipe_bpp);
+		pipe_config->pipe_bpp = bpp;
 	}
+	return 0;
 }
 
 static int
@@ -10910,8 +10918,8 @@  compute_baseline_pipe_bpp(struct intel_crtc *crtc,
 		if (connector_state->crtc != &crtc->base)
 			continue;
 
-		connected_sink_compute_bpp(to_intel_connector(connector),
-					   pipe_config);
+		if (connected_sink_max_bpp(connector_state, pipe_config) < 0)
+			return -EINVAL;
 	}
 
 	return bpp;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 3384a9bbdafd..54efa0478ba0 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5735,6 +5735,10 @@  intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
 		intel_attach_force_audio_property(connector);
 
 	intel_attach_broadcast_rgb_property(connector);
+	if (HAS_GMCH_DISPLAY(dev_priv))
+		drm_connector_attach_max_bpc_property(connector, 6, 10);
+	else if (INTEL_GEN(dev_priv) >= 5)
+		drm_connector_attach_max_bpc_property(connector, 6, 12);
 
 	if (intel_dp_is_edp(intel_dp)) {
 		u32 allowed_scalers;
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 89d5e3984452..ca82aedb401e 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -2106,11 +2106,16 @@  static const struct drm_encoder_funcs intel_hdmi_enc_funcs = {
 static void
 intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *connector)
 {
+	struct drm_i915_private *dev_priv = to_i915(connector->dev);
+
 	intel_attach_force_audio_property(connector);
 	intel_attach_broadcast_rgb_property(connector);
 	intel_attach_aspect_ratio_property(connector);
 	drm_connector_attach_content_type_property(connector);
 	connector->state->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
+
+	if (!HAS_GMCH_DISPLAY(dev_priv))
+		drm_connector_attach_max_bpc_property(connector, 8, 12);
 }
 
 /*