187 lines
4.4 KiB
C
187 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _DRM_CLIENT_H_
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#define _DRM_CLIENT_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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* 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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* @vaddr: Virtual address for the buffer
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*/
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void *vaddr;
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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_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_commit_force(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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int drm_client_debugfs_init(struct drm_minor *minor);
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#endif
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