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| author | Jani Nikula <jani.nikula@intel.com> | 2024-01-23 21:37:07 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2024-02-08 17:10:33 +0200 |
| commit | d807ad80d811ba0c22adfd871e2a46491f80d6e2 (patch) | |
| tree | 65ead22c9c2ce056d1742cfca18549145fa1152e /include/drm | |
| parent | ef8d8df3cb06fb99856bb7164b50ff52d6b07e66 (diff) | |
| download | linux-d807ad80d811ba0c22adfd871e2a46491f80d6e2.tar.gz linux-d807ad80d811ba0c22adfd871e2a46491f80d6e2.tar.bz2 linux-d807ad80d811ba0c22adfd871e2a46491f80d6e2.zip | |
drm/bridge: add ->edid_read hook and drm_bridge_edid_read()
Add new struct drm_edid based ->edid_read hook and
drm_bridge_edid_read() function to call the hook.
v2: Include drm/drm_edid.h
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/9d08d22eaffcb9c59a2b677e45d7e61fc689bc2f.1706038510.git.jani.nikula@intel.com
Diffstat (limited to 'include/drm')
| -rw-r--r-- | include/drm/drm_bridge.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index e39da5807ba7..b7aed3ead705 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -558,6 +558,37 @@ struct drm_bridge_funcs { struct drm_connector *connector); /** + * @edid_read: + * + * Read the EDID data of the connected display. + * + * The @edid_read callback is the preferred way of reporting mode + * information for a display connected to the bridge output. Bridges + * that support reading EDID shall implement this callback and leave + * the @get_modes callback unimplemented. + * + * The caller of this operation shall first verify the output + * connection status and refrain from reading EDID from a disconnected + * output. + * + * This callback is optional. Bridges that implement it shall set the + * DRM_BRIDGE_OP_EDID flag in their &drm_bridge->ops. + * + * The connector parameter shall be used for the sole purpose of EDID + * retrieval, and shall not be stored internally by bridge drivers for + * future usage. + * + * RETURNS: + * + * An edid structure newly allocated with drm_edid_alloc() or returned + * from drm_edid_read() family of functions on success, or NULL + * otherwise. The caller is responsible for freeing the returned edid + * structure with drm_edid_free(). + */ + const struct drm_edid *(*edid_read)(struct drm_bridge *bridge, + struct drm_connector *connector); + + /** * @get_edid: * * Read and parse the EDID data of the connected display. @@ -888,6 +919,8 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge, enum drm_connector_status drm_bridge_detect(struct drm_bridge *bridge); int drm_bridge_get_modes(struct drm_bridge *bridge, struct drm_connector *connector); +const struct drm_edid *drm_bridge_edid_read(struct drm_bridge *bridge, + struct drm_connector *connector); struct edid *drm_bridge_get_edid(struct drm_bridge *bridge, struct drm_connector *connector); void drm_bridge_hpd_enable(struct drm_bridge *bridge, |