Add a DC helper for panic updates.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Cc: Lu Yao <ya...@kylinos.cn>
Cc: Jocelyn Falempe <jfale...@redhat.com>
Cc: Harry Wentland <harry.wentl...@amd.com>
---
.../gpu/drm/amd/display/dc/core/dc_surface.c | 46 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc_plane.h | 3 ++
2 files changed, 49 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
index ccbb15f1638c..50faeba498c6 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c
@@ -277,4 +277,50 @@ void dc_3dlut_func_retain(struct dc_3dlut *lut)
kref_get(&lut->refcount);
}
+void dc_plane_force_update_for_panic(struct dc_plane_state *plane_state,
+ bool clear_tiling)
+{
+ struct dc *dc;
+ int i;
+
+ if (!plane_state)
+ return;
+
+ dc = plane_state->ctx->dc;
+
+ if (!dc || !dc->current_state)
+ return;
+ for (i = 0; i < dc->res_pool->pipe_count; i++) {
+ struct pipe_ctx *pipe_ctx =
&dc->current_state->res_ctx.pipe_ctx[i];
+
+ if (!pipe_ctx)
+ continue;
+
+ if (dc->ctx->dce_version >= DCE_VERSION_MAX) {
+ struct hubp *hubp = pipe_ctx->plane_res.hubp;
+ if (!hubp)
+ continue;
+ /* if framebuffer is tiled, disable tiling */
+ if (clear_tiling && hubp->funcs->hubp_clear_tiling)
+ hubp->funcs->hubp_clear_tiling(hubp);
+
+ /* force page flip to see the new content of the
framebuffer */
+ hubp->funcs->hubp_program_surface_flip_and_addr(hubp,
+
&plane_state->address,
+ true);
+ } else {
+ struct mem_input *mi = pipe_ctx->plane_res.mi;
+ if (!mi)
+ continue;
+ /* if framebuffer is tiled, disable tiling */
+ if (clear_tiling && mi->funcs->mem_input_clear_tiling)
+ mi->funcs->mem_input_clear_tiling(mi);
+
+ /* force page flip to see the new content of the
framebuffer */
+ mi->funcs->mem_input_program_surface_flip_and_addr(mi,
+
&plane_state->address,
+
true);
+ }
+ }
+}
diff --git a/drivers/gpu/drm/amd/display/dc/dc_plane.h
b/drivers/gpu/drm/amd/display/dc/dc_plane.h
index bd37ec82b42d..fabcefeda288 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_plane.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_plane.h
@@ -34,4 +34,7 @@ const struct dc_plane_status *dc_plane_get_status(
void dc_plane_state_retain(struct dc_plane_state *plane_state);
void dc_plane_state_release(struct dc_plane_state *plane_state);
+void dc_plane_force_update_for_panic(struct dc_plane_state *plane_state,
+ bool clear_tiling);
+
#endif /* _DC_PLANE_H_ */
--
2.47.0
