From: Ville Syrjälä ville.syrjala@linux.intel.com
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@linux.intel.com --- .../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