Unverified Commit ae9f1f2c authored by Maxime Ripard's avatar Maxime Ripard
Browse files

drm/bridge: panel: Introduce drmm_of_get_bridge 



Unlike what can be found for other DRM entities, we don't have a
DRM-managed function equivalent to devm_drm_of_get_bridge().

Let's create it.

Acked-by: default avatarSam Ravnborg <sam@ravnborg.org>
Acked-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220711173939.1132294-12-maxime@cerno.tech
parent abea75e9

drivers/gpu/drm/bridge/panel.c

+35 −0
Original line number Diff line number Diff line
@@ -459,4 +459,39 @@ struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, 
	return bridge;

}

EXPORT_SYMBOL(devm_drm_of_get_bridge);



/**

 * drmm_of_get_bridge - Return next bridge in the chain

 * @drm: device to tie the bridge lifetime to

 * @np: device tree node containing encoder output ports

 * @port: port in the device tree node

 * @endpoint: endpoint in the device tree node

 *

 * Given a DT node's port and endpoint number, finds the connected node

 * and returns the associated bridge if any, or creates and returns a

 * drm panel bridge instance if a panel is connected.

 *

 * Returns a drmm managed pointer to the bridge if successful, or an error

 * pointer otherwise.

 */

struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm,

				      struct device_node *np,

				      u32 port, u32 endpoint)

{

	struct drm_bridge *bridge;

	struct drm_panel *panel;

	int ret;



	ret = drm_of_find_panel_or_bridge(np, port, endpoint,

					  &panel, &bridge);

	if (ret)

		return ERR_PTR(ret);



	if (panel)

		bridge = drmm_panel_bridge_add(drm, panel);



	return bridge;

}

EXPORT_SYMBOL(drmm_of_get_bridge);



#endif

include/drm/drm_bridge.h

+2 −0
Original line number Diff line number Diff line
@@ -949,6 +949,8 @@ static inline int drm_panel_bridge_set_orientation(struct drm_connector *connect 
#if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL_BRIDGE)

struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, struct device_node *node,

					  u32 port, u32 endpoint);

struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, struct device_node *node,

					  u32 port, u32 endpoint);

#else

static inline struct drm_bridge *devm_drm_of_get_bridge(struct device *dev,

							struct device_node *node,