drm/edid: use struct drm_edid for override/firmware EDID

There's a lot going on here, but the main thing is switching the
firmware EDID loader to use struct drm_edid. Unfortunately, it's
difficult to reasonably split to smaller pieces.

Convert the EDID loader to struct drm_edid. There's a functional change
in validation; it no longer tries to fix errors or filter invalid
blocks. It's stricter in this sense. Hopefully this will not be an
issue.

As a by-product, this change also allows HF-EEODB extended EDIDs to be
passed via override/firmware EDID.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e64267c28eca483e83c802bc06ddd149bdcdfc66.1666614699.git.jani.nikula@intel.com

1 files changed, 2 insertions, 2 deletions

diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index dc7467d25cd8..8138613f4e4e 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -388,11 +388,11 @@ int drm_av_sync_delay(struct drm_connector *connector,
 		      const struct drm_display_mode *mode);
 
 #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
-struct edid *drm_edid_load_firmware(struct drm_connector *connector);
+const struct drm_edid *drm_edid_load_firmware(struct drm_connector *connector);
 int __drm_set_edid_firmware_path(const char *path);
 int __drm_get_edid_firmware_path(char *buf, size_t bufsize);
 #else
-static inline struct edid *
+static inline const struct drm_edid *
 drm_edid_load_firmware(struct drm_connector *connector)
 {
 	return ERR_PTR(-ENOENT);