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Commit c70087e8 authored by benjamin.gaignard@linaro.org's avatar benjamin.gaignard@linaro.org Committed by Benjamin Gaignard
Browse files

drm/drm_of: add drm_of_panel_bridge_remove function 



This function is the pendant of drm_of_find_panel_or_bridge()
to remove a previously allocated panel_bridge.
Given a specific port and endpoint it remove the panel bridge.
Since drm_panel_bridge_remove() will check that bridge parameter
is not NULL and is a real drm_panel_bridge and no a simple bridge
it is safe to call it directly.

Signed-off-by: default avatarBenjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: default avatarPhilippe Cornu <philippe.cornu@st.com>
Tested-by: default avatarPhilippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1506936888-23844-3-git-send-email-benjamin.gaignard@linaro.org
parent 6b0e284c

drivers/gpu/drm/drm_of.c

+33 −0
Original line number Diff line number Diff line
@@ -262,3 +262,36 @@ int drm_of_find_panel_or_bridge(const struct device_node *np, 
	return ret;

}

EXPORT_SYMBOL_GPL(drm_of_find_panel_or_bridge);



#ifdef CONFIG_DRM_PANEL_BRIDGE

/*

 * drm_of_panel_bridge_remove - remove panel bridge

 * @np: device tree node containing panel bridge output ports

 *

 * Remove the panel bridge of a given DT node's port and endpoint number

 *

 * Returns zero if successful, or one of the standard error codes if it fails.

 */

int drm_of_panel_bridge_remove(const struct device_node *np,

			       int port, int endpoint)

{

	struct drm_bridge *bridge;

	struct device_node *remote;



	remote = of_graph_get_remote_node(np, port, endpoint);

	if (!remote)

		return -ENODEV;



	bridge = of_drm_find_bridge(remote);

	drm_panel_bridge_remove(bridge);



	return 0;

}

#else

int drm_of_panel_bridge_remove(const struct device_node *np,

			       int port, int endpoint)

{

	return -EINVAL;

}

#endif

EXPORT_SYMBOL_GPL(drm_of_panel_bridge_remove);

include/drm/drm_of.h

+8 −0
Original line number Diff line number Diff line
@@ -29,6 +29,8 @@ int drm_of_find_panel_or_bridge(const struct device_node *np, 
				int port, int endpoint,

				struct drm_panel **panel,

				struct drm_bridge **bridge);

int drm_of_panel_bridge_remove(const struct device_node *np,

			       int port, int endpoint);

#else

static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,

						  struct device_node *port)
@@ -65,6 +67,12 @@ static inline int drm_of_find_panel_or_bridge(const struct device_node *np, 
{

	return -EINVAL;

}



static inline int drm_of_panel_bridge_remove(const struct device_node *np,

					     int port, int endpoint)

{

	return -EINVAL;

}

#endif



static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,