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)
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Kishore Kadiyala <kishore.kadiyala@xxxxxxxxx>
Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 25 +++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_dp.c | 1 +
drivers/gpu/drm/i915/intel_drv.h | 2 ++
drivers/gpu/drm/i915/intel_hdmi.c | 7 +++++++
drivers/gpu/drm/i915/intel_modes.c | 21 +++++++++++++++++++++
5 files changed, 56 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4bb46f289c0d..216fd4b689b5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10783,6 +10783,28 @@ connected_sink_compute_bpp(struct intel_connector *connector,
}
}
+static void
+connected_sink_max_bpp(struct drm_connector_state *conn_state,
+ struct intel_crtc_state *pipe_config)
+{
+ 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:
+ pipe_config->pipe_bpp = 12*3;
+ break;
+ default:
+ break;
+ }
+ DRM_DEBUG_KMS("Limiting display bpp to %d\n", pipe_config->pipe_bpp);
+}
+
static int
compute_baseline_pipe_bpp(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
@@ -10811,6 +10833,9 @@ compute_baseline_pipe_bpp(struct intel_crtc *crtc,
if (connector_state->crtc != &crtc->base)
continue;
+ if (connector_state->max_bpc)
+ connected_sink_max_bpp(connector_state, pipe_config);
+
connected_sink_compute_bpp(to_intel_connector(connector),
pipe_config);
}
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 436c22de33b6..1c2d38b7f6ab 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5719,6 +5719,7 @@ 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);
+ intel_attach_max_bpc_property(connector, 6, 16);
if (intel_dp_is_edp(intel_dp)) {
u32 allowed_scalers;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f5731215210a..b3c703dacc92 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1869,6 +1869,8 @@ int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
void intel_attach_force_audio_property(struct drm_connector *connector);
void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
void intel_attach_aspect_ratio_property(struct drm_connector *connector);
+void intel_attach_max_bpc_property(struct drm_connector *connector, int min, int
+ max);
/* intel_overlay.c */
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index a2dab0b6bde6..e649bbf07642 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -2109,11 +2109,18 @@ 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))
+ intel_attach_max_bpc_property(connector, 8, 8);
+ else
+ intel_attach_max_bpc_property(connector, 8, 12);
}
/*
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index ca44bf368e24..eb1eaad0115e 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -133,3 +133,24 @@ intel_attach_aspect_ratio_property(struct drm_connector *connector)
connector->dev->mode_config.aspect_ratio_property,
DRM_MODE_PICTURE_ASPECT_NONE);
}
+
+void
+intel_attach_max_bpc_property(struct drm_connector *connector, int min, int
+ max)
+{
+ struct drm_device *dev = connector->dev;
+ struct drm_mode_config *config = &dev->mode_config;
+ struct drm_property *prop;
+
+ prop = config->max_bpc_property;
+ if (prop == NULL) {
+ prop = drm_property_create_range(dev, 0, "max bpc", min, max);
+ if (prop == NULL)
+ return;
+
+ config->max_bpc_property = prop;
+ }
+
+ drm_object_attach_property(&connector->base, prop, max);
+ connector->state->max_bpc = max;
+}
--
2.9.3
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