Handle replay related hpd irqs
Signed-off-by: Bhawanpreet Lakha <bhawanpreet.la...@amd.com>
---
.../dc/link/protocols/link_dp_irq_handler.c | 66 +++++++++++++++++++
1 file changed, 66 insertions(+)
diff --git
a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
index ba95facc4ee8..a5605cf4449e 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_irq_handler.c
@@ -175,6 +175,68 @@ static bool handle_hpd_irq_psr_sink(struct dc_link *link)
return false;
}
+static bool handle_hpd_irq_replay_sink(struct dc_link *link)
+{
+ union dpcd_replay_configuration replay_configuration;
+ /*AMD Replay version reuse DP_PSR_ERROR_STATUS for REPLAY_ERROR
status.*/
+ union psr_error_status replay_error_status;
+
+ if (!link->replay_settings.replay_feature_enabled)
+ return false;
+
+ dm_helpers_dp_read_dpcd(
+ link->ctx,
+ link,
+ DP_SINK_PR_REPLAY_STATUS,
+ &replay_configuration.raw,
+ sizeof(replay_configuration.raw));
+
+ dm_helpers_dp_read_dpcd(
+ link->ctx,
+ link,
+ DP_PSR_ERROR_STATUS,
+ &replay_error_status.raw,
+ sizeof(replay_error_status.raw));
+
+ link->replay_settings.config.replay_error_status.bits.LINK_CRC_ERROR =
+ replay_error_status.bits.LINK_CRC_ERROR;
+ link->replay_settings.config.replay_error_status.bits.DESYNC_ERROR =
+ replay_configuration.bits.DESYNC_ERROR_STATUS;
+
link->replay_settings.config.replay_error_status.bits.STATE_TRANSITION_ERROR =
+ replay_configuration.bits.STATE_TRANSITION_ERROR_STATUS;
+
+ if
(link->replay_settings.config.replay_error_status.bits.LINK_CRC_ERROR ||
+
link->replay_settings.config.replay_error_status.bits.DESYNC_ERROR ||
+
link->replay_settings.config.replay_error_status.bits.STATE_TRANSITION_ERROR) {
+ bool allow_active;
+
+ /* Acknowledge and clear configuration bits */
+ dm_helpers_dp_write_dpcd(
+ link->ctx,
+ link,
+ DP_SINK_PR_REPLAY_STATUS,
+ &replay_configuration.raw,
+ sizeof(replay_configuration.raw));
+
+ /* Acknowledge and clear error bits */
+ dm_helpers_dp_write_dpcd(
+ link->ctx,
+ link,
+ DP_PSR_ERROR_STATUS,/*DpcdAddress_REPLAY_Error_Status*/
+ &replay_error_status.raw,
+ sizeof(replay_error_status.raw));
+
+ /* Replay error, disable and re-enable Replay */
+ if (link->replay_settings.replay_allow_active) {
+ allow_active = false;
+ edp_set_replay_allow_active(link, &allow_active, true,
false, NULL);
+ allow_active = true;
+ edp_set_replay_allow_active(link, &allow_active, true,
false, NULL);
+ }
+ }
+ return true;
+}
+
void dp_handle_link_loss(struct dc_link *link)
{
struct pipe_ctx *pipes[MAX_PIPES];
@@ -327,6 +389,10 @@ bool dp_handle_hpd_rx_irq(struct dc_link *link,
/* PSR-related error was detected and handled */
return true;
+ if (handle_hpd_irq_replay_sink(link))
+ /* Replay-related error was detected and handled */
+ return true;
+
/* If PSR-related error handled, Main link may be off,
* so do not handle as a normal sink status change interrupt.
*/
--
2.25.1
