drm/amd/display: Add function to get the pipe from the stream context

[Why]
We need a helper function in dc to grab the pipe from the stream
context.

[How]
Add it.

Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Acked-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 dc5fd27..c4e871f 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -718,6 +718,20 @@ enum dc_status dc_stream_add_dsc_to_resource(struct dc *dc,
        }
 }
 
+struct pipe_ctx *dc_stream_get_pipe_ctx(struct dc_stream_state *stream)
+{
+       int i = 0;
+
+       for (i = 0; i < MAX_PIPES; i++) {
+               struct pipe_ctx *pipe = &stream->ctx->dc->current_state->res_ctx.pipe_ctx[i];
+
+               if (pipe->stream == stream)
+                       return pipe;
+       }
+
+       return NULL;
+}
+
 void dc_stream_log(const struct dc *dc, const struct dc_stream_state *stream)
 {
        DC_LOG_DC(

diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index f631b61..99a750f 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -524,4 +524,6 @@ bool dc_stream_get_crtc_position(struct dc *dc,
                                 unsigned int *v_pos,
                                 unsigned int *nom_v_pos);
 
+struct pipe_ctx *dc_stream_get_pipe_ctx(struct dc_stream_state *stream);
+
 #endif /* DC_STREAM_H_ */