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/* SPDX-License-Identifier: GPL-2.0 */ #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. * * 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); 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_commit_force(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) int drm_client_debugfs_init(struct drm_minor *minor); #endif
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