diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2013-09-20 13:42:17 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-01 05:45:11 (GMT) |
| commit | 50003939b5a45df44b3b4bd1ccd46e3c50aa5e65 (patch) | |
| tree | 3935083be41225064daee243e0e7a425b172ff9a | |
| parent | 2b9966771d3b84da6383e8695350beea3213f848 (diff) | |
| download | linux-50003939b5a45df44b3b4bd1ccd46e3c50aa5e65.tar.xz | |
drm/i915/dp: read DPCD PSR capability only on eDP
Reduce AUX transactions for non-eDP.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7823a1b..5a937fc 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2686,11 +2686,14 @@ intel_dp_get_dpcd(struct intel_dp *intel_dp) /* Check if the panel supports PSR */ memset(intel_dp->psr_dpcd, 0, sizeof(intel_dp->psr_dpcd)); - intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, - intel_dp->psr_dpcd, - sizeof(intel_dp->psr_dpcd)); - if (is_edp_psr(intel_dp)) - DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); + if (is_edp(intel_dp)) { + intel_dp_aux_native_read_retry(intel_dp, DP_PSR_SUPPORT, + intel_dp->psr_dpcd, + sizeof(intel_dp->psr_dpcd)); + if (is_edp_psr(intel_dp)) + DRM_DEBUG_KMS("Detected EDP PSR Panel.\n"); + } + if (!(intel_dp->dpcd[DP_DOWNSTREAMPORT_PRESENT] & DP_DWN_STRM_PORT_PRESENT)) return true; /* native DP sink */ |