[12/13] drm/amd/display: add drm_edid to dc_sink

Commit Message

Melissa Wen April 11, 2025, 8:08 p.m. UTC

Add Linux opaque object to dc_sink for storing edid data cross driver,
drm_edid. Also include the Linux call to free this object, the
drm_edid_free()

Signed-off-by: Melissa Wen <[e-mail]>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.c | 7 +++++++
 drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.h | 1 +
 drivers/gpu/drm/amd/display/dc/core/dc_sink.c   | 3 +++
 drivers/gpu/drm/amd/display/dc/dc.h             | 3 +++
 4 files changed, 14 insertions(+)

Patch

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.c b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.c
index 39fcaa16a14a..fa0f0e61f05d 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.c
@@ -1,6 +1,7 @@ 
 // SPDX-License-Identifier: MIT
 #include "amdgpu_dm/dc_edid.h"
 #include "dc.h"
+#include <drm/drm_edid.h>
 
 bool dc_edid_is_same_edid(struct dc_sink *prev_sink,
 			  struct dc_sink *current_sink)
@@ -25,3 +26,9 @@  void dc_edid_copy_edid_to_dc(struct dc_sink *dc_sink,
 	memmove(dc_sink->dc_edid.raw_edid, (const uint8_t *) edid, len);
 	dc_sink->dc_edid.length = len;
 }
+
+
+void dc_edid_sink_edid_free(struct dc_sink *sink)
+{
+	drm_edid_free(sink->drm_edid);
+}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.h b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.h
index f42cd5bbc730..2c76768be459 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_edid.h
@@ -9,5 +9,6 @@  bool dc_edid_is_same_edid(struct dc_sink *prev_sink,
 			  struct dc_sink *current_sink);
 void dc_edid_copy_edid_to_dc(struct dc_sink *dc_sink,
 			     const void *edid, int len);
+void dc_edid_sink_edid_free(struct dc_sink *sink);
 
 #endif /* __DC_EDID_H__ */
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
index 455fa5dd1420..3774a3245506 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c
@@ -26,6 +26,7 @@ 
 #include "dm_services.h"
 #include "dm_helpers.h"
 #include "core_types.h"
+#include "dc_edid.h"
 
 /*******************************************************************************
  * Private functions
@@ -65,6 +66,8 @@  void dc_sink_retain(struct dc_sink *sink)
 static void dc_sink_free(struct kref *kref)
 {
 	struct dc_sink *sink = container_of(kref, struct dc_sink, refcount);
+
+	dc_edid_sink_edid_free(sink);
 	kfree(sink->dc_container_id);
 	kfree(sink);
 }
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index d60cd9d23848..0d4e6ea1821b 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -46,6 +46,8 @@ 
 
 #include "dmub/inc/dmub_cmd.h"
 
+#include <drm/drm_edid.h>
+
 struct abm_save_restore;
 
 /* forward declaration */
@@ -2430,6 +2432,7 @@  struct scdc_caps {
 struct dc_sink {
 	enum signal_type sink_signal;
 	struct dc_edid dc_edid; /* raw edid */
+	const struct drm_edid *drm_edid; /* Linux DRM edid*/
 	struct dc_edid_caps edid_caps; /* parse display caps */
 	struct dc_container_id *dc_container_id;
 	uint32_t dongle_max_pix_clk;