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| author |   Jun Lei <Jun.Lei@amd.com> | 2018-11-23 15:21:02 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2019-01-14 15:04:37 -0500 |
| commit | 04a789bef315a3ed64f296fab21be3933405ea43 (patch) | |
| tree | 5e1c25990ac0959021c4dc09dab77651ba5e5e2e /drivers/gpu/drm/amd/display/dc/dc_stream.h | |
| parent | drm/amd/display: update DCN dml calcs (diff) | |
| download | wireguard-linux-04a789bef315a3ed64f296fab21be3933405ea43.tar.xz wireguard-linux-04a789bef315a3ed64f296fab21be3933405ea43.zip | |
drm/amd/display: add stream ID and otg instance in dc_stream_state
[why]
stream ID allows DMs to avoid memory address comparisons to compare
stream equality.
otg_instance allows DC to more rigorously define when otg_instance
can change. specifically, it is now defined to be only mutable when dc_stream_state
changes. This is better than a "get status" function which prevents efficient
caching of otherwise very stable information.
[how]
stream ID follows similar pattern to sink ID, which is already implemented
otg_instance is an output which occurs on all dc_stream modification functions
Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_stream.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_stream.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h index 8a778dd5f69e..0dfad73d1743 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_stream.h +++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h @@ -127,6 +127,18 @@ struct dc_stream_state { /* Computed state bits */ bool mode_changed : 1; + /* Output from DC when stream state is committed or altered + * DC may only access these values during: + * dc_commit_state, dc_commit_state_no_check, dc_commit_streams + * values may not change outside of those calls + */ + struct { + // For interrupt management, some hardware instance + // offsets need to be exposed to DM + uint8_t otg_offset; + } out; + + uint32_t stream_id; }; struct dc_stream_update { |