diff options
author | Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com> | 2023-12-19 23:51:24 +0300 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-09 23:43:54 +0300 |
commit | ab76bd72ee12d9117c3a16d749ffce84f5b235bf (patch) | |
tree | 363c547b9e71851b371ba5f4b99d44b32ce64f05 /drivers/gpu/drm/amd/display/dc/link | |
parent | 2476bf4328d1a55db709ce9ad2c274d26040311b (diff) | |
download | linux-ab76bd72ee12d9117c3a16d749ffce84f5b235bf.tar.xz |
drm/amd/display: Dpia hpd status not in sync after S4
[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@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_dpia.c | 36 |
1 files 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; } |