Sink will interrupt source when it have any problem saving or reading the remote frame buffer. v3: disabling PSR instead of exiting on error Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_psr.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index af5fcfd98a53..fd240e45f341 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -1026,6 +1026,20 @@ void intel_psr_short_pulse(struct intel_dp *intel_dp) psr_disable(intel_dp); } + if (drm_dp_dpcd_readb(&intel_dp->aux, DP_PSR_ERROR_STATUS, &val) != 1) { + DRM_ERROR("PSR_ERROR_STATUS dpcd read failed\n"); + goto exit; + } + + if (val & DP_PSR_RFB_STORAGE_ERROR) { + DRM_DEBUG_KMS("PSR RFB storage error, exiting PSR\n"); + psr_disable(intel_dp); + } + if (val & (DP_PSR_VSC_SDP_UNCORRECTABLE_ERROR | DP_PSR_LINK_CRC_ERROR)) + DRM_ERROR("PSR_ERROR_STATUS not handled %x\n", val); + /* clear status register */ + drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_ERROR_STATUS, val); + /* TODO: handle other PSR/PSR2 errors */ exit: mutex_unlock(&psr->lock); -- 2.17.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx