From: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@xxxxxxx>
[Why]
Dpia hpd status not in sync causing driver not enabling BW Alloc after
S4.
[How]
Update hpd_status of the link when querying hpd state from dmub in
dpia_query_hpd_status().
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@xxxxxxx>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@xxxxxxx>
---
.../display/dc/link/protocols/link_dp_dpia.c | 36 +++++++++++--------
1 file changed, 22 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c
index 982eda3c46f5..6af42ba9885c 100644
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c
@@ -82,25 +82,33 @@ bool dpia_query_hpd_status(struct dc_link *link)
{
union dmub_rb_cmd cmd = {0};
struct dc_dmub_srv *dmub_srv = link->ctx->dmub_srv;
- bool is_hpd_high = false;
/* prepare QUERY_HPD command */
cmd.query_hpd.header.type = DMUB_CMD__QUERY_HPD_STATE;
cmd.query_hpd.data.instance = link->link_id.enum_id - ENUM_ID_1;
cmd.query_hpd.data.ch_type = AUX_CHANNEL_DPIA;
- /* Return HPD status reported by DMUB if query successfully executed. */
- if (dc_wake_and_execute_dmub_cmd(dmub_srv->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY) &&
- cmd.query_hpd.data.status == AUX_RET_SUCCESS)
- is_hpd_high = cmd.query_hpd.data.result;
-
- DC_LOG_DEBUG("%s: link(%d) dpia(%d) cmd_status(%d) result(%d)\n",
- __func__,
- link->link_index,
- link->link_id.enum_id - ENUM_ID_1,
- cmd.query_hpd.data.status,
- cmd.query_hpd.data.result);
-
- return is_hpd_high;
+ /* Query dpia hpd status from dmub */
+ if (dc_wake_and_execute_dmub_cmd(dmub_srv->ctx, &cmd,
+ DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY) &&
+ cmd.query_hpd.data.status == AUX_RET_SUCCESS) {
+ DC_LOG_DEBUG("%s: for link(%d) dpia(%d) success, current_hpd_status(%d) new_hpd_status(%d)\n",
+ __func__,
+ link->link_index,
+ link->link_id.enum_id - ENUM_ID_1,
+ link->hpd_status,
+ cmd.query_hpd.data.result);
+ link->hpd_status = cmd.query_hpd.data.result;
+ } else {
+ DC_LOG_ERROR("%s: for link(%d) dpia(%d) failed with status(%d), current_hpd_status(%d) new_hpd_status(0)\n",
+ __func__,
+ link->link_index,
+ link->link_id.enum_id - ENUM_ID_1,
+ cmd.query_hpd.data.status,
+ link->hpd_status);
+ link->hpd_status = false;
+ }
+
+ return link->hpd_status;
}
--
2.43.0
