1 /* SPDX-License-Identifier: GPL-2.0 */
6 #include <linux/lockdep.h>
7 #include <linux/mutex.h>
8 #include <linux/types.h>
10 #include <drm/drm_connector.h>
11 #include <drm/drm_crtc.h>
13 struct drm_client_dev;
16 struct drm_framebuffer;
17 struct drm_gem_object;
21 #define DRM_CLIENT_MAX_CLONED_CONNECTORS 8
24 * struct drm_client_funcs - DRM client callbacks
26 struct drm_client_funcs {
28 * @owner: The module owner
35 * Called when &drm_device is unregistered. The client should respond by
36 * releasing its resources using drm_client_release().
38 * This callback is optional.
40 void (*unregister)(struct drm_client_dev *client);
45 * Called on drm_lastclose(). The first client instance in the list that
46 * returns zero gets the privilege to restore and no more clients are
47 * called. This callback is not called after @unregister has been called.
49 * This callback is optional.
51 int (*restore)(struct drm_client_dev *client);
56 * Called on drm_kms_helper_hotplug_event().
57 * This callback is not called after @unregister has been called.
59 * This callback is optional.
61 int (*hotplug)(struct drm_client_dev *client);
65 * struct drm_client_dev - DRM client instance
67 struct drm_client_dev {
71 struct drm_device *dev;
74 * @name: Name of the client.
81 * List of all clients of a DRM device, linked into
82 * &drm_device.clientlist. Protected by &drm_device.clientlist_mutex.
84 struct list_head list;
87 * @funcs: DRM client functions (optional)
89 const struct drm_client_funcs *funcs;
94 struct drm_file *file;
97 * @modeset_mutex: Protects @modesets.
99 struct mutex modeset_mutex;
102 * @modesets: CRTC configurations
104 struct drm_mode_set *modesets;
107 int drm_client_init(struct drm_device *dev, struct drm_client_dev *client,
108 const char *name, const struct drm_client_funcs *funcs);
109 void drm_client_release(struct drm_client_dev *client);
110 void drm_client_register(struct drm_client_dev *client);
112 void drm_client_dev_unregister(struct drm_device *dev);
113 void drm_client_dev_hotplug(struct drm_device *dev);
114 void drm_client_dev_restore(struct drm_device *dev);
117 * struct drm_client_buffer - DRM client buffer
119 struct drm_client_buffer {
121 * @client: DRM client
123 struct drm_client_dev *client;
126 * @handle: Buffer handle
131 * @pitch: Buffer pitch
136 * @gem: GEM object backing this buffer
138 struct drm_gem_object *gem;
141 * @vaddr: Virtual address for the buffer
146 * @fb: DRM framebuffer
148 struct drm_framebuffer *fb;
151 struct drm_client_buffer *
152 drm_client_framebuffer_create(struct drm_client_dev *client, u32 width, u32 height, u32 format);
153 void drm_client_framebuffer_delete(struct drm_client_buffer *buffer);
155 int drm_client_modeset_create(struct drm_client_dev *client);
156 void drm_client_modeset_free(struct drm_client_dev *client);
157 void drm_client_modeset_release(struct drm_client_dev *client);
158 struct drm_mode_set *drm_client_find_modeset(struct drm_client_dev *client, struct drm_crtc *crtc);
159 bool drm_client_panel_rotation(struct drm_mode_set *modeset, unsigned int *rotation);
160 int drm_client_modeset_commit_force(struct drm_client_dev *client);
161 int drm_client_modeset_commit(struct drm_client_dev *client);
162 int drm_client_modeset_dpms(struct drm_client_dev *client, int mode);
165 * drm_client_for_each_modeset() - Iterate over client modesets
166 * @modeset: &drm_mode_set loop cursor
167 * @client: DRM client
169 #define drm_client_for_each_modeset(modeset, client) \
170 for (({ lockdep_assert_held(&(client)->modeset_mutex); }), \
171 modeset = (client)->modesets; modeset->crtc; modeset++)
174 * drm_client_for_each_connector_iter - connector_list iterator macro
175 * @connector: &struct drm_connector pointer used as cursor
176 * @iter: &struct drm_connector_list_iter
178 * This iterates the connectors that are useable for internal clients (excludes
179 * writeback connectors).
181 * For more info see drm_for_each_connector_iter().
183 #define drm_client_for_each_connector_iter(connector, iter) \
184 drm_for_each_connector_iter(connector, iter) \
185 if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
187 int drm_client_debugfs_init(struct drm_minor *minor);