diff options
| author | Wenjing Liu | 2019-03-29 23:22:16 +0100 |
|---|---|---|
| committer | Alex Deucher | 2019-04-24 00:27:45 +0200 |
| commit | 43e3ac8389ef68ab2347eb1ae4a6e5b49793614e (patch) | |
| tree | 2ef10c79092ad29b9ea6b63ee54274c260c3d4e2 /drivers/gpu/drm/amd | |
| parent | drm/amd/display: Allow system to enter stutter on init (diff) | |
| download | kernel-qcow2-linux-43e3ac8389ef68ab2347eb1ae4a6e5b49793614e.tar.gz kernel-qcow2-linux-43e3ac8389ef68ab2347eb1ae4a6e5b49793614e.tar.xz kernel-qcow2-linux-43e3ac8389ef68ab2347eb1ae4a6e5b49793614e.zip | |
drm/amd/display: Add function to copy DC streams
We'll need the ability to copy a dc_stream_state for some features.
Implement it here.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@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')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 21 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_stream.h | 2 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c index e10479d58c11..09d765f359b0 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c @@ -163,6 +163,27 @@ struct dc_stream_state *dc_create_stream_for_sink( return stream; } +struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream) +{ + struct dc_stream_state *new_stream; + + new_stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL); + if (stream == NULL) + return NULL; + + memcpy(new_stream, stream, sizeof(struct dc_stream_state)); + + if (new_stream->sink) + dc_sink_retain(new_stream->sink); + + if (new_stream->out_transfer_func) + dc_transfer_func_retain(new_stream->out_transfer_func); + + kref_init(&new_stream->refcount); + + return new_stream; +} + /** * dc_stream_get_status_from_state - Get stream status from given dc state * @state: DC state to find the stream status in diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h index 17fa3bf6cf7b..189bdab929a5 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_stream.h +++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h @@ -307,6 +307,8 @@ enum surface_update_type dc_check_update_surfaces_for_stream( */ struct dc_stream_state *dc_create_stream_for_sink(struct dc_sink *dc_sink); +struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream); + void update_stream_signal(struct dc_stream_state *stream, struct dc_sink *sink); void dc_stream_retain(struct dc_stream_state *dc_stream); |