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