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
Cc: Ville Syrjälä <ville.syrj...@linux.intel.com>
Cc: Daniel Vetter <daniel.vet...@iffwll.ch>
Cc: Rodrigo Vivi <rodrigo.v...@intel.com>
Cc: Kishore Kadiyala <kishore.kadiy...@intel.com>
Cc: Manasi Navare <manasi.d.nav...@intel.com>
Cc: Stanislav Lisovskiy <stanislav.lisovs...@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 49 ++++++++++++++++++++----------------
drivers/gpu/drm/i915/intel_dp.c | 5 ++++
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 eb25037d7b38..219323f6b16e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10845,29 +10845,37 @@ static void
intel_modeset_update_connector_atomic_state(struct drm_device *dev)
}
static void
-connected_sink_compute_bpp(struct intel_connector *connector,
- struct intel_crtc_state *pipe_config)
+connected_sink_max_bpp(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);
-
- /* 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;
+ if (pipe_config->pipe_bpp < conn_state->max_bpc * 3) {
+ conn_state->max_bpc = pipe_config->pipe_bpp / 3;
+ return;
}
- /* 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;
+ switch (conn_state->max_bpc) {
+ case 8:
+ case 9:
+ pipe_config->pipe_bpp = 8*3;
+ break;
+ case 10:
+ case 11:
+ pipe_config->pipe_bpp = 10*3;
+ break;
+ case 12:
+ case 13:
+ case 14:
+ case 15:
+ pipe_config->pipe_bpp = 12*3;
+ break;
+ case 16:
+ pipe_config->pipe_bpp = 16*3;
+ break;
+ default:
+ break;
}
+
+ DRM_DEBUG_KMS("Limiting display bpp to %d\n", pipe_config->pipe_bpp);
}
static int
@@ -10898,8 +10906,7 @@ 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);
+ connected_sink_max_bpp(connector_state, pipe_config);
}
return bpp;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 436c22de33b6..aefca1d9e87b 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5719,6 +5719,11 @@ 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 ((IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
+ IS_CHERRYVIEW(dev_priv)))
+ drm_connector_attach_max_bpc_property(connector, 8, 10);
+ else if (INTEL_GEN(dev_priv) >= 5)
+ drm_connector_attach_max_bpc_property(connector, 8, 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 a2dab0b6bde6..2b432c7e4f8a 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -2109,11 +2109,16 @@ 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);
}
/*
--
2.9.3
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