According to eDP spec, sink could required a granularity in the
start of x coordinate or in the width of the selective update region.
As it is not supported by hardware, lets not enable PSR2 in sinks
that requires it.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_psr.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 0dd4211cb293..84b512426514 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -243,6 +243,8 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp)
bool y_req = intel_dp->psr_dpcd[1] &
DP_PSR2_SU_Y_COORDINATE_REQUIRED;
bool alpm = intel_dp_get_alpm_status(intel_dp);
+ bool granularity_req = (intel_dp->psr_dpcd[1] &
+ DP_PSR2_SU_GRANULARITY_REQUIRED);
/*
* All panels that supports PSR version 03h (PSR2 +
@@ -255,7 +257,8 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp)
* Y-coordinate requirement panels we would need to enable
* GTC first.
*/
- dev_priv->psr.sink_psr2_support = y_req && alpm;
+ dev_priv->psr.sink_psr2_support = y_req && alpm &&
+ !granularity_req;
DRM_DEBUG_KMS("PSR2 %ssupported\n",
dev_priv->psr.sink_psr2_support ? "" : "not ");
--
2.19.0
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