From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Stash the downstream facing port max bpc away during
intel_dp_set_edid(). We'll soon need the EDID in there so
we can't figure this out so easily during .compute_config() anymore.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
.../drm/i915/display/intel_display_types.h | 5 +++++
drivers/gpu/drm/i915/display/intel_dp.c | 21 +++++++++++++------
2 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index 5774240c0996..dba0bb245a43 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1304,6 +1304,11 @@ struct intel_dp {
/* Display stream compression testing */
bool force_dsc_en;
+
+ /* Downstream facing port caps */
+ struct {
+ u8 max_bpc;
+ } dfp;
};
enum lspcon_vendor {
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 1786e6e8ffe3..5fab7ab97815 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1914,13 +1914,12 @@ static int intel_dp_compute_bpp(struct intel_dp *intel_dp,
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
struct intel_connector *intel_connector = intel_dp->attached_connector;
- int bpp, bpc;
+ int bpp;
bpp = pipe_config->pipe_bpp;
- bpc = drm_dp_downstream_max_bpc(intel_dp->dpcd, intel_dp->downstream_ports);
- if (bpc > 0)
- bpp = min(bpp, 3*bpc);
+ if (intel_dp->dfp.max_bpc)
+ bpp = min(bpp, 3 * intel_dp->dfp.max_bpc);
if (intel_dp_is_edp(intel_dp)) {
/* Get bpp from vbt only for panels that dont have bpp in edid */
@@ -5657,12 +5656,20 @@ intel_dp_get_edid(struct intel_dp *intel_dp)
static void
intel_dp_set_edid(struct intel_dp *intel_dp)
{
- struct intel_connector *intel_connector = intel_dp->attached_connector;
+ struct intel_connector *connector = intel_dp->attached_connector;
struct edid *edid;
intel_dp_unset_edid(intel_dp);
edid = intel_dp_get_edid(intel_dp);
- intel_connector->detect_edid = edid;
+ connector->detect_edid = edid;
+
+ intel_dp->dfp.max_bpc =
+ drm_dp_downstream_max_bpc(intel_dp->dpcd,
+ intel_dp->downstream_ports);
+
+ DRM_DEBUG_KMS("[CONNECTOR:%d:%s] DFP max bpc %d\n",
+ connector->base.base.id, connector->base.name,
+ intel_dp->dfp.max_bpc);
if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
intel_dp->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
@@ -5683,6 +5690,8 @@ intel_dp_unset_edid(struct intel_dp *intel_dp)
intel_dp->has_hdmi_sink = false;
intel_dp->has_audio = false;
+
+ intel_dp->dfp.max_bpc = 0;
}
static int
--
2.24.1
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