mirror of
https://github.com/torvalds/linux.git
synced 2024-12-01 08:31:37 +00:00
8b5f7a6246
Function is useful when drm_of_find_possible_crtcs() can't be used and custom parsing is needed. This can happen for example when there is a node with multiple muxes between crtc and encoder. Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> [maxime: change the function to have a consistent prefix] Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180625120304.7543-22-jernej.skrabec@siol.net
131 lines
3.4 KiB
C
131 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __DRM_OF_H__
|
|
#define __DRM_OF_H__
|
|
|
|
#include <linux/of_graph.h>
|
|
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
|
|
#include <drm/drm_bridge.h>
|
|
#endif
|
|
|
|
struct component_master_ops;
|
|
struct component_match;
|
|
struct device;
|
|
struct drm_device;
|
|
struct drm_encoder;
|
|
struct drm_panel;
|
|
struct drm_bridge;
|
|
struct device_node;
|
|
|
|
#ifdef CONFIG_OF
|
|
uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
|
|
struct device_node *port);
|
|
uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
|
|
struct device_node *port);
|
|
void drm_of_component_match_add(struct device *master,
|
|
struct component_match **matchptr,
|
|
int (*compare)(struct device *, void *),
|
|
struct device_node *node);
|
|
int drm_of_component_probe(struct device *dev,
|
|
int (*compare_of)(struct device *, void *),
|
|
const struct component_master_ops *m_ops);
|
|
int drm_of_encoder_active_endpoint(struct device_node *node,
|
|
struct drm_encoder *encoder,
|
|
struct of_endpoint *endpoint);
|
|
int drm_of_find_panel_or_bridge(const struct device_node *np,
|
|
int port, int endpoint,
|
|
struct drm_panel **panel,
|
|
struct drm_bridge **bridge);
|
|
#else
|
|
static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev,
|
|
struct device_node *port)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
|
|
struct device_node *port)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void
|
|
drm_of_component_match_add(struct device *master,
|
|
struct component_match **matchptr,
|
|
int (*compare)(struct device *, void *),
|
|
struct device_node *node)
|
|
{
|
|
}
|
|
|
|
static inline int
|
|
drm_of_component_probe(struct device *dev,
|
|
int (*compare_of)(struct device *, void *),
|
|
const struct component_master_ops *m_ops)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline int drm_of_encoder_active_endpoint(struct device_node *node,
|
|
struct drm_encoder *encoder,
|
|
struct of_endpoint *endpoint)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
|
|
int port, int endpoint,
|
|
struct drm_panel **panel,
|
|
struct drm_bridge **bridge)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
static inline int drm_of_panel_bridge_remove(const struct device_node *np,
|
|
int port, int endpoint)
|
|
{
|
|
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE)
|
|
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
|
|
return -EINVAL;
|
|
#endif
|
|
}
|
|
|
|
static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
struct of_endpoint endpoint;
|
|
int ret = drm_of_encoder_active_endpoint(node, encoder,
|
|
&endpoint);
|
|
|
|
return ret ?: endpoint.id;
|
|
}
|
|
|
|
static inline int drm_of_encoder_active_port_id(struct device_node *node,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
struct of_endpoint endpoint;
|
|
int ret = drm_of_encoder_active_endpoint(node, encoder,
|
|
&endpoint);
|
|
|
|
return ret ?: endpoint.port;
|
|
}
|
|
|
|
#endif /* __DRM_OF_H__ */
|