diff options
| author | Alvin Lee <Alvin.Lee2@amd.com> | 2021-11-04 23:52:15 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-11-18 00:58:11 +0300 |
| commit | d493a0244fce12de22a220468e6628bb008a0e58 (patch) | |
| tree | 3948f3d9617d28e699222740935bf8902a155106 /drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | |
| parent | 7a47c8820a1d97e6cb5bcef6b65529f1389b0e13 (diff) | |
| download | linux-d493a0244fce12de22a220468e6628bb008a0e58.tar.xz | |
drm/amd/display: Wait for ACK for INBOX0 HW Lock
[Why]
In DC we want to wait for the INBOX0 HW Lock command to ACK before
continuing. This is to ensure that the lock has been successfully
acquired before programming HW in DC.
[How]
Add interfaces to send messages on INBOX0, poll for their completation
and clear the ack.
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index 360f3199ea6f..541376fabbef 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -115,13 +115,44 @@ void dc_dmub_srv_wait_idle(struct dc_dmub_srv *dc_dmub_srv) } } +void dc_dmub_srv_clear_inbox0_ack(struct dc_dmub_srv *dmub_srv) +{ + struct dmub_srv *dmub = dmub_srv->dmub; + struct dc_context *dc_ctx = dmub_srv->ctx; + enum dmub_status status = DMUB_STATUS_OK; + + status = dmub_srv_clear_inbox0_ack(dmub); + if (status != DMUB_STATUS_OK) { + DC_ERROR("Error clearing INBOX0 ack: status=%d\n", status); + dc_dmub_srv_log_diagnostic_data(dmub_srv); + } +} + +void dc_dmub_srv_wait_for_inbox0_ack(struct dc_dmub_srv *dmub_srv) +{ + struct dmub_srv *dmub = dmub_srv->dmub; + struct dc_context *dc_ctx = dmub_srv->ctx; + enum dmub_status status = DMUB_STATUS_OK; + + status = dmub_srv_wait_for_inbox0_ack(dmub, 100000); + if (status != DMUB_STATUS_OK) { + DC_ERROR("Error waiting for INBOX0 HW Lock Ack\n"); + dc_dmub_srv_log_diagnostic_data(dmub_srv); + } +} + void dc_dmub_srv_send_inbox0_cmd(struct dc_dmub_srv *dmub_srv, union dmub_inbox0_data_register data) { struct dmub_srv *dmub = dmub_srv->dmub; - if (dmub->hw_funcs.send_inbox0_cmd) - dmub->hw_funcs.send_inbox0_cmd(dmub, data); - // TODO: Add wait command -- poll register for ACK + struct dc_context *dc_ctx = dmub_srv->ctx; + enum dmub_status status = DMUB_STATUS_OK; + + status = dmub_srv_send_inbox0_cmd(dmub, data); + if (status != DMUB_STATUS_OK) { + DC_ERROR("Error sending INBOX0 cmd\n"); + dc_dmub_srv_log_diagnostic_data(dmub_srv); + } } bool dc_dmub_srv_cmd_with_reply_data(struct dc_dmub_srv *dc_dmub_srv, union dmub_rb_cmd *cmd) |