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- /* SPDX-License-Identifier: GPL-2.0 or MIT */
- #ifndef _DRM_CLIENT_H_
- #define _DRM_CLIENT_H_
- #include <linux/iosys-map.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;
- /**
- * @map: Virtual address for the buffer
- */
- struct iosys_map map;
- /**
- * @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);
- int drm_client_buffer_vmap(struct drm_client_buffer *buffer,
- struct iosys_map *map);
- 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
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