37  * This helper library contains various one-off functions which don't really fit
42  * drm_helper_move_panel_connectors_to_head() - move panels to the front in the
44  * @dev: drm device to operate on
59 	spin_lock_irq(&dev->mode_config.connector_list_lock);  in drm_helper_move_panel_connectors_to_head()
61 				 &dev->mode_config.connector_list, head) {  in drm_helper_move_panel_connectors_to_head()
62 		if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS ||  in drm_helper_move_panel_connectors_to_head()
63 		    connector->connector_type == DRM_MODE_CONNECTOR_eDP ||  in drm_helper_move_panel_connectors_to_head()
64 		    connector->connector_type == DRM_MODE_CONNECTOR_DSI)  in drm_helper_move_panel_connectors_to_head()
65 			list_move_tail(&connector->head, &panel_list);  in drm_helper_move_panel_connectors_to_head()
68 	list_splice(&panel_list, &dev->mode_config.connector_list);  in drm_helper_move_panel_connectors_to_head()
69 	spin_unlock_irq(&dev->mode_config.connector_list_lock);  in drm_helper_move_panel_connectors_to_head()
74  * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata
75  * @dev: DRM device
80  * This helper can be used in a drivers fb_create callback to pre-fill the fb's
90 	fb->dev = dev;  in drm_helper_mode_fill_fb_struct()
91 	fb->format = info;  in drm_helper_mode_fill_fb_struct()
92 	fb->width = mode_cmd->width;  in drm_helper_mode_fill_fb_struct()
93 	fb->height = mode_cmd->height;  in drm_helper_mode_fill_fb_struct()
95 		fb->pitches[i] = mode_cmd->pitches[i];  in drm_helper_mode_fill_fb_struct()
96 		fb->offsets[i] = mode_cmd->offsets[i];  in drm_helper_mode_fill_fb_struct()
98 	fb->modifier = mode_cmd->modifier[0];  in drm_helper_mode_fill_fb_struct()
99 	fb->flags = mode_cmd->flags;  in drm_helper_mode_fill_fb_struct()
107  * creating the primary plane.
119  * drm_crtc_init - Legacy CRTC initialization function
120  * @dev: DRM device
124  * Initialize a CRTC object with a default helper-provided primary plane and no
130  * 1. Primary plane cannot be repositioned.
131  * 2. Primary plane cannot be scaled.
132  * 3. Primary plane must cover the entire CRTC.
134  * 5. The primary plane must always be on if the CRTC is enabled.
137  * should instead implement their own primary plane. Atomic drivers must do so.
148 	struct drm_plane *primary;  in drm_crtc_init()  local
152 	primary = __drm_universal_plane_alloc(dev, sizeof(*primary), 0, 0,  in drm_crtc_init()
157 	if (IS_ERR(primary))  in drm_crtc_init()
158 		return PTR_ERR(primary);  in drm_crtc_init()
164 	primary->format_default = true;  in drm_crtc_init()
166 	ret = drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs, NULL);  in drm_crtc_init()
173 	drm_plane_cleanup(primary);  in drm_crtc_init()
174 	kfree(primary);  in drm_crtc_init()
180  * drm_mode_config_helper_suspend - Modeset suspend helper
181  * @dev: DRM device
186  * If suspending fails, fbdev and polling is re-enabled.
203 	if (dev->mode_config.poll_enabled)  in drm_mode_config_helper_suspend()
214 		if (dev->mode_config.poll_enabled)  in drm_mode_config_helper_suspend()
220 	dev->mode_config.suspend_state = state;  in drm_mode_config_helper_suspend()
227  * drm_mode_config_helper_resume - Modeset resume helper
228  * @dev: DRM device
247 	if (WARN_ON(!dev->mode_config.suspend_state))  in drm_mode_config_helper_resume()
248 		return -EINVAL;  in drm_mode_config_helper_resume()
250 	ret = drm_atomic_helper_resume(dev, dev->mode_config.suspend_state);  in drm_mode_config_helper_resume()
253 	dev->mode_config.suspend_state = NULL;  in drm_mode_config_helper_resume()
260 	if (dev->mode_config.poll_enabled)  in drm_mode_config_helper_resume()