From: Radhakrishna Sripada <radhakrishna.sripada@xxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
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 | 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(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);
}
/*
--
2.18.0
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