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| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2024-05-15 14:53:56 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-06-14 15:20:20 -0400 |
| commit | 0db66572747a789922e8137904e8b4c39d9b94f6 (patch) | |
| tree | 3bfc862f56adac4ef3cce1da8d9df605f0cb1538 /drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | |
| parent | b95fa494d6b74c30eeb4a50481aa1041c631754e (diff) | |
| download | linux-0db66572747a789922e8137904e8b4c39d9b94f6.tar.gz linux-0db66572747a789922e8137904e8b4c39d9b94f6.tar.bz2 linux-0db66572747a789922e8137904e8b4c39d9b94f6.zip | |
drm/amd/display: Add outbox notification support for HPD redetect
[Why]
HPD sense changes can occur during low power states and need to be
notified from firmware to driver. Upon notification the hotplug
redetection routines should execute.
[How]
Add Support in DMUB srv and DMUB srv stat for receiving these
notifications. DM can hook them up and process the HPD redetection
once received.
Reviewed-by: Duncan Ma <duncan.ma@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@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/dmub/inc/dmub_cmd.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index 4db4c5ad5169..7f08e95140ef 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -1285,6 +1285,10 @@ enum dmub_out_cmd_type { * Command type used for USB4 DPIA notification */ DMUB_OUT_CMD__DPIA_NOTIFICATION = 5, + /** + * Command type used for HPD redetect notification + */ + DMUB_OUT_CMD__HPD_SENSE_NOTIFY = 6, }; /* DMUB_CMD__DPIA command sub-types. */ @@ -2468,6 +2472,22 @@ struct dmub_rb_cmd_query_hpd_state { struct dmub_cmd_hpd_state_query_data data; }; +/** + * struct dmub_rb_cmd_hpd_sense_notify - HPD sense notification data. + */ +struct dmub_rb_cmd_hpd_sense_notify_data { + uint32_t old_hpd_sense_mask; /**< Old HPD sense mask */ + uint32_t new_hpd_sense_mask; /**< New HPD sense mask */ +}; + +/** + * struct dmub_rb_cmd_hpd_sense_notify - DMUB_OUT_CMD__HPD_SENSE_NOTIFY command. + */ +struct dmub_rb_cmd_hpd_sense_notify { + struct dmub_cmd_header header; /**< header */ + struct dmub_rb_cmd_hpd_sense_notify_data data; /**< payload */ +}; + /* * Command IDs should be treated as stable ABI. * Do not reuse or modify IDs. @@ -5204,6 +5224,10 @@ union dmub_rb_out_cmd { * DPIA notification command. */ struct dmub_rb_cmd_dpia_notification dpia_notification; + /** + * HPD sense notification command. + */ + struct dmub_rb_cmd_hpd_sense_notify hpd_sense_notify; }; #pragma pack(pop) |