Our HW doesn't support Panel Replay without AUX_LESS ALPM on eDP. Check
panel support for this and prevent eDP panel replay if it doesn't exits.
Bspec: 68920
v2: use intel_alpm_aux_less_wake_supported
Signed-off-by: Jouni Högander <jouni.hogan...@intel.com>
---
drivers/gpu/drm/i915/display/intel_psr.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
b/drivers/gpu/drm/i915/display/intel_psr.c
index 66ab8abd0a04..d6055e97ae4e 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -551,6 +551,13 @@ static void _panel_replay_init_dpcd(struct intel_dp
*intel_dp)
{
struct drm_i915_private *i915 = dp_to_i915(intel_dp);
+ if (intel_dp_is_edp(intel_dp) &&
+ (!intel_alpm_aux_less_wake_supported(intel_dp))) {
+ drm_dbg_kms(&i915->drm,
+ "Panel doesn't support AUX-less ALPM, eDP Panel
Replay not possible\n");
+ return;
+ }
+
intel_dp->psr.sink_panel_replay_support = true;
if (intel_dp->pr_dpcd & DP_PANEL_REPLAY_SU_SUPPORT)
--
2.34.1
