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>
---
Changes from v1:
- printing a debug message when sink assert a error
drivers/gpu/drm/i915/intel_psr.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 4cb27faab707..558b08a43f9e 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -1156,6 +1156,18 @@ void intel_psr_hpd_short_pulse_handle(struct intel_dp *intel_dp)
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_error;
+ }
+
+ if (val & DP_PSR_RFB_STORAGE_ERROR) {
+ DRM_DEBUG_KMS("PSR RFB storage error, exiting PSR\n");
+ 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_error:
intel_psr_schedule_activate_work(dev_priv);
--
2.17.0
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