diff options
| author | Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com> | 2025-06-19 09:56:29 +0530 |
|---|---|---|
| committer | Suraj Kandpal <suraj.kandpal@intel.com> | 2025-06-23 11:24:28 +0530 |
| commit | 07faff368d7fa85715564b0974caf16899f3b5f9 (patch) | |
| tree | fdca065d2db2a55748eae39cbc62659b638886d6 | |
| parent | 4f9c81d64f030c1f3d96c5fd356cfb6e68ef9fc2 (diff) | |
drm/xe/display: read PCON capability only when present
Avoid reading the PCON capabilities redundantly on non-branch devices.
v2:
- Make commit description more accurate. (Imre)
- Clear intel_dp->pcon_dsc_dpcd irrespective of presense of PCON. (Imre)
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20250619042629.3980244-1-chaitanya.kumar.borah@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 277b40b13948..f48912f308df 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3726,6 +3726,9 @@ static void intel_dp_get_pcon_dsc_cap(struct intel_dp *intel_dp) memset(intel_dp->pcon_dsc_dpcd, 0, sizeof(intel_dp->pcon_dsc_dpcd)); + if (!drm_dp_is_branch(intel_dp->dpcd)) + return; + if (drm_dp_dpcd_read(&intel_dp->aux, DP_PCON_DSC_ENCODER, intel_dp->pcon_dsc_dpcd, sizeof(intel_dp->pcon_dsc_dpcd)) < 0) |