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>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@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 85d201fce287..d76eece63ebd 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -1274,6 +1274,16 @@ void intel_psr_hpd_short_pulse_handle(struct intel_dp *intel_dp)
if ((val & DP_PSR_SINK_STATE_MASK) == DP_PSR_SINK_INTERNAL_ERROR)
__intel_psr_exit(dev_priv);
+ 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)
+ __intel_psr_exit(dev_priv);
+ /* clear status register */
+ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, val);
+
/* TODO: handle other PSR/PSR2 errors */
dpcd_read_error:
if (!dev_priv->psr.busy_frontbuffer_bits)
--
2.16.3
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