From: Wenjing Liu <wenjing....@amd.com>
[why]
Need to have a helper function to find the primary dp pipe of the plane
associated with a dpp pipe
Reviewed-by: Dillon Varone <dillon.var...@amd.com>
Acked-by: Wayne Lin <wayne....@amd.com>
Signed-off-by: Wenjing Liu <wenjing....@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 14 ++++++++++++++
drivers/gpu/drm/amd/display/dc/inc/resource.h | 6 ++++++
2 files changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 436892450936..614a1fb08809 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1805,6 +1805,20 @@ struct pipe_ctx *resource_get_opp_head(const struct
pipe_ctx *pipe_ctx)
return opp_head;
}
+struct pipe_ctx *resource_get_primary_dpp_pipe(const struct pipe_ctx *dpp_pipe)
+{
+ struct pipe_ctx *pri_dpp_pipe = (struct pipe_ctx *) dpp_pipe;
+
+ ASSERT(resource_is_pipe_type(dpp_pipe, DPP_PIPE));
+ while (pri_dpp_pipe->prev_odm_pipe)
+ pri_dpp_pipe = pri_dpp_pipe->prev_odm_pipe;
+ while (pri_dpp_pipe->top_pipe &&
+ pri_dpp_pipe->top_pipe->plane_state ==
pri_dpp_pipe->plane_state)
+ pri_dpp_pipe = pri_dpp_pipe->top_pipe;
+ return pri_dpp_pipe;
+}
+
+
int resource_get_mpc_slice_index(const struct pipe_ctx *pipe_ctx)
{
struct pipe_ctx *split_pipe = pipe_ctx->top_pipe;
diff --git a/drivers/gpu/drm/amd/display/dc/inc/resource.h
b/drivers/gpu/drm/amd/display/dc/inc/resource.h
index 6777b07d0727..170d6ab81aef 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/resource.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/resource.h
@@ -409,6 +409,12 @@ struct pipe_ctx *resource_get_otg_master(const struct
pipe_ctx *pipe_ctx);
*/
struct pipe_ctx *resource_get_opp_head(const struct pipe_ctx *pipe_ctx);
+/*
+ * Get the DPP pipe allocated for MPC slice 0 and ODM slice 0 of the plane
+ * associated with dpp_pipe.
+ */
+struct pipe_ctx *resource_get_primary_dpp_pipe(const struct pipe_ctx
*dpp_pipe);
+
/*
* Get the MPC slice index counting from 0 from left most slice
* For example, if a DPP pipe is used as a secondary pipe in MPCC combine, MPC
--
2.37.3
