drm/edid: abstract debugfs override EDID set/reset
Add functions drm_edid_override_set() and drm_edid_override_reset() to
support "edid_override" connector debugfs, and to hide the details about
it in drm_edid.c. No functional changes at this time.
Also note in the connector.override_edid flag kernel-doc that this is
only supposed to be modified by the code doing debugfs EDID override
handling. Currently, it is still being modified by amdgpu in
create_eml_sink() and handle_edid_mgmt() for reasons unknown. This was
added in commit 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
and later moved to amdgpu_dm.c in commit e7b07ceef2a6 ("drm/amd/display:
Merge amdgpu_dm_types and amdgpu_dm").
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/8f6b4001630cafac5f44aa5913429ac9979743d2.1656494768.git.jani.nikula@intel.com
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 94b422b..a1705d6 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -1527,7 +1527,11 @@ struct drm_connector {
struct drm_cmdline_mode cmdline_mode;
/** @force: a DRM_FORCE_<foo> state for forced mode sets */
enum drm_connector_force force;
- /** @override_edid: has the EDID been overwritten through debugfs for testing? */
+ /**
+ * @override_edid: has the EDID been overwritten through debugfs for
+ * testing? Do not modify outside of drm_edid_override_set() and
+ * drm_edid_override_reset().
+ */
bool override_edid;
/** @epoch_counter: used to detect any other changes in connector, besides status */
u64 epoch_counter;
