When we detect a error and disable PSR, it is kept disabled until the
next modeset but as the sink already show signs that it do not
properly work with PSR lets disabled it for good to avoid any
additional flickering.
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_psr.c | 10 +++++++++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 21e4405e2168..c189c8055b75 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -504,6 +504,7 @@ struct i915_psr {
u8 sink_sync_latency;
ktime_t last_entry_attempt;
ktime_t last_exit;
+ bool sink_not_reliable;
};
enum intel_pch {
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index ebb255f230b7..ab527f9a5436 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -527,6 +527,11 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
return;
}
+ if (dev_priv->psr.sink_not_reliable) {
+ DRM_DEBUG_KMS("PSR sink implementation is not reliable\n");
+ return;
+ }
+
if (IS_HASWELL(dev_priv) &&
I915_READ(HSW_STEREO_3D_CTL(crtc_state->cpu_transcoder)) &
S3D_ENABLE) {
@@ -1123,6 +1128,7 @@ void intel_psr_short_pulse(struct intel_dp *intel_dp)
if ((val & DP_PSR_SINK_STATE_MASK) == DP_PSR_SINK_INTERNAL_ERROR) {
DRM_DEBUG_KMS("PSR sink internal error, disabling PSR\n");
intel_psr_disable_locked(intel_dp);
+ psr->sink_not_reliable = true;
}
if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ERROR_STATUS, &val) != 1) {
@@ -1140,8 +1146,10 @@ void intel_psr_short_pulse(struct intel_dp *intel_dp)
if (val & ~errors)
DRM_ERROR("PSR_ERROR_STATUS unhandled errors %x\n",
val & ~errors);
- if (val & errors)
+ if (val & errors) {
intel_psr_disable_locked(intel_dp);
+ psr->sink_not_reliable = true;
+ }
/* clear status register */
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, val);
exit:
--
2.19.1
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