Sink will interrupt source when it have any problem saving or reading
the remote frame buffer.
Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_psr.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index ab3713c2582b..4e73edf1ea5b 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -1010,6 +1010,16 @@ void intel_psr_hpd_short_pulse_handle(struct intel_dp *intel_dp)
if ((val & DP_PSR_SINK_STATE_MASK) == DP_PSR_SINK_INTERNAL_ERROR)
psr->exit(intel_dp, false);
+ if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ERROR_STATUS, &val) != 1) {
+ DRM_DEBUG_KMS("PSR_ERROR_STATUS read failed\n");
+ goto dpcd_read_error;
+ }
+
+ if (val & DP_PSR_RFB_STORAGE_ERROR)
+ dev_priv->psr.exit(intel_dp, false);
+ /* clear status register */
+ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, val);
+
/* TODO: handle other PSR/PSR2 errors */
dpcd_read_error:
intel_psr_active_schedule(psr, PSR_ACTIVE_DELAY_MSEC);
--
2.16.2
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