Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 or MIT */
 
#ifndef _DRM_CLIENT_H_
#define _DRM_CLIENT_H_
 
#include <linux/lockdep.h>
#include <linux/mutex.h>
#include <linux/types.h>
 
#include <drm/drm_connector.h>
#include <drm/drm_crtc.h>
 
struct drm_client_dev;
struct drm_device;
struct drm_file;
struct drm_framebuffer;
struct drm_gem_object;
struct drm_minor;
struct module;
 
/**
 * struct drm_client_funcs - DRM client callbacks
 */
struct drm_client_funcs {
<------>/**
<------> * @owner: The module owner
<------> */
<------>struct module *owner;
 
<------>/**
<------> * @unregister:
<------> *
<------> * Called when &drm_device is unregistered. The client should respond by
<------> * releasing its resources using drm_client_release().
<------> *
<------> * This callback is optional.
<------> */
<------>void (*unregister)(struct drm_client_dev *client);
 
<------>/**
<------> * @restore:
<------> *
<------> * Called on drm_lastclose(). The first client instance in the list that
<------> * returns zero gets the privilege to restore and no more clients are
<------> * called. This callback is not called after @unregister has been called.
<------> *
<------> * Note that the core does not guarantee exclusion against concurrent
<------> * drm_open(). Clients need to ensure this themselves, for example by
<------> * using drm_master_internal_acquire() and
<------> * drm_master_internal_release().
<------> *
<------> * This callback is optional.
<------> */
<------>int (*restore)(struct drm_client_dev *client);
 
<------>/**
<------> * @hotplug:
<------> *
<------> * Called on drm_kms_helper_hotplug_event().
<------> * This callback is not called after @unregister has been called.
<------> *
<------> * This callback is optional.
<------> */
<------>int (*hotplug)(struct drm_client_dev *client);
};
 
/**
 * struct drm_client_dev - DRM client instance
 */
struct drm_client_dev {
<------>/**
<------> * @dev: DRM device
<------> */
<------>struct drm_device *dev;
 
<------>/**
<------> * @name: Name of the client.
<------> */
<------>const char *name;
 
<------>/**
<------> * @list:
<------> *
<------> * List of all clients of a DRM device, linked into
<------> * &drm_device.clientlist. Protected by &drm_device.clientlist_mutex.
<------> */
<------>struct list_head list;
 
<------>/**
<------> * @funcs: DRM client functions (optional)
<------> */
<------>const struct drm_client_funcs *funcs;
 
<------>/**
<------> * @file: DRM file
<------> */
<------>struct drm_file *file;
 
<------>/**
<------> * @modeset_mutex: Protects @modesets.
<------> */
<------>struct mutex modeset_mutex;
 
<------>/**
<------> * @modesets: CRTC configurations
<------> */
<------>struct drm_mode_set *modesets;
};
 
int drm_client_init(struct drm_device *dev, struct drm_client_dev *client,
<------><------>    const char *name, const struct drm_client_funcs *funcs);
void drm_client_release(struct drm_client_dev *client);
void drm_client_register(struct drm_client_dev *client);
 
void drm_client_dev_unregister(struct drm_device *dev);
void drm_client_dev_hotplug(struct drm_device *dev);
void drm_client_dev_restore(struct drm_device *dev);
 
/**
 * struct drm_client_buffer - DRM client buffer
 */
struct drm_client_buffer {
<------>/**
<------> * @client: DRM client
<------> */
<------>struct drm_client_dev *client;
 
<------>/**
<------> * @handle: Buffer handle
<------> */
<------>u32 handle;
 
<------>/**
<------> * @pitch: Buffer pitch
<------> */
<------>u32 pitch;
 
<------>/**
<------> * @gem: GEM object backing this buffer
<------> */
<------>struct drm_gem_object *gem;
 
<------>/**
<------> * @vaddr: Virtual address for the buffer
<------> */
<------>void *vaddr;
 
<------>/**
<------> * @fb: DRM framebuffer
<------> */
<------>struct drm_framebuffer *fb;
};
 
struct drm_client_buffer *
drm_client_framebuffer_create(struct drm_client_dev *client, u32 width, u32 height, u32 format);
void drm_client_framebuffer_delete(struct drm_client_buffer *buffer);
int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect);
void *drm_client_buffer_vmap(struct drm_client_buffer *buffer);
void drm_client_buffer_vunmap(struct drm_client_buffer *buffer);
 
int drm_client_modeset_create(struct drm_client_dev *client);
void drm_client_modeset_free(struct drm_client_dev *client);
int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width, unsigned int height);
bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation);
int drm_client_modeset_check(struct drm_client_dev *client);
int drm_client_modeset_commit_locked(struct drm_client_dev *client);
int drm_client_modeset_commit(struct drm_client_dev *client);
int drm_client_modeset_dpms(struct drm_client_dev *client, int mode);
 
/**
 * drm_client_for_each_modeset() - Iterate over client modesets
 * @modeset: &drm_mode_set loop cursor
 * @client: DRM client
 */
#define drm_client_for_each_modeset(modeset, client) \
<------>for (({ lockdep_assert_held(&(client)->modeset_mutex); }), \
<------>     modeset = (client)->modesets; modeset->crtc; modeset++)
 
/**
 * drm_client_for_each_connector_iter - connector_list iterator macro
 * @connector: &struct drm_connector pointer used as cursor
 * @iter: &struct drm_connector_list_iter
 *
 * This iterates the connectors that are useable for internal clients (excludes
 * writeback connectors).
 *
 * For more info see drm_for_each_connector_iter().
 */
#define drm_client_for_each_connector_iter(connector, iter) \
<------>drm_for_each_connector_iter(connector, iter) \
<------><------>if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
 
void drm_client_debugfs_init(struct drm_minor *minor);
 
#endif