4  * Permission to use, copy, modify, distribute, and sell this software and its
9  * publicity pertaining to distribution of the software without specific,
14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
41  * pixel data from a CRTC and converts it to a format suitable for any attached
42  * connector. Encoders are objects exposed to userspace, originally to allow
43  * userspace to infer cloning and connector/CRTC restrictions. Unfortunately
46  * the recommended way to infer restrictions is by using the
51  * free to use them however they wish. Modeset helper libraries make strong use
52  * of encoders to facilitate code sharing. But for more complex settings it is
53  * usually better to move shared code into a separate &drm_bridge. Compared to
55  * abstraction since they are not exposed to userspace at all.
64 	{ DRM_MODE_ENCODER_LVDS, "LVDS" },
69 	{ DRM_MODE_ENCODER_DPI, "DPI" },
80 		if (encoder->funcs && encoder->funcs->late_register)  in drm_encoder_register_all()
81 			ret = encoder->funcs->late_register(encoder);  in drm_encoder_register_all()
94 		if (encoder->funcs && encoder->funcs->early_unregister)  in drm_encoder_unregister_all()
95 			encoder->funcs->early_unregister(encoder);  in drm_encoder_unregister_all()
109 	if (WARN_ON(dev->mode_config.num_encoder >= 32))  in __drm_encoder_init()
110 		return -EINVAL;  in __drm_encoder_init()
112 	ret = drm_mode_object_add(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);  in __drm_encoder_init()
116 	encoder->dev = dev;  in __drm_encoder_init()
117 	encoder->encoder_type = encoder_type;  in __drm_encoder_init()
118 	encoder->funcs = funcs;  in __drm_encoder_init()
120 		encoder->name = kvasprintf(GFP_KERNEL, name, ap);  in __drm_encoder_init()
122 		encoder->name = kasprintf(GFP_KERNEL, "%s-%d",  in __drm_encoder_init()
124 					  encoder->base.id);  in __drm_encoder_init()
126 	if (!encoder->name) {  in __drm_encoder_init()
127 		ret = -ENOMEM;  in __drm_encoder_init()
131 	INIT_LIST_HEAD(&encoder->bridge_chain);  in __drm_encoder_init()
132 	list_add_tail(&encoder->head, &dev->mode_config.encoder_list);  in __drm_encoder_init()
133 	encoder->index = dev->mode_config.num_encoder++;  in __drm_encoder_init()
137 		drm_mode_object_unregister(dev, &encoder->base);  in __drm_encoder_init()
143  * drm_encoder_init - Init a preallocated encoder
145  * @encoder: the encoder to init
157  * instead of drm_encoder_init() to let the DRM managed resource
171 	WARN_ON(!funcs->destroy);  in drm_encoder_init()
182  * drm_encoder_cleanup - cleans up an initialised encoder
183  * @encoder: encoder to cleanup
189 	struct drm_device *dev = encoder->dev;  in drm_encoder_cleanup()
192 	/* Note that the encoder_list is considered to be static; should we  in drm_encoder_cleanup()
193 	 * remove the drm_encoder at runtime we would have to decrement all  in drm_encoder_cleanup()
197 	list_for_each_entry_safe(bridge, next, &encoder->bridge_chain,  in drm_encoder_cleanup()
201 	drm_mode_object_unregister(dev, &encoder->base);  in drm_encoder_cleanup()
202 	kfree(encoder->name);  in drm_encoder_cleanup()
203 	list_del(&encoder->head);  in drm_encoder_cleanup()
204 	dev->mode_config.num_encoder--;  in drm_encoder_cleanup()
214 	if (WARN_ON(!encoder->dev))  in drmm_encoder_alloc_release()
230 	if (drm_WARN_ON(dev, funcs && funcs->destroy))  in __drmm_encoder_init()
231 		return -EINVAL;  in __drmm_encoder_init()
255 		return ERR_PTR(-ENOMEM);  in __drmm_encoder_alloc()
270  * drmm_encoder_init - Initialize a preallocated encoder
272  * @encoder: the encoder to init
307 	struct drm_device *dev = encoder->dev;  in drm_encoder_get_crtc()
315 		if (!connector->state)  in drm_encoder_get_crtc()
320 		if (connector->state->best_encoder != encoder)  in drm_encoder_get_crtc()
324 		return connector->state->crtc;  in drm_encoder_get_crtc()
332 	return encoder->crtc;  in drm_encoder_get_crtc()
343 		return -EOPNOTSUPP;  in drm_mode_getencoder()
345 	encoder = drm_encoder_find(dev, file_priv, enc_resp->encoder_id);  in drm_mode_getencoder()
347 		return -ENOENT;  in drm_mode_getencoder()
349 	drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);  in drm_mode_getencoder()
351 	if (crtc && drm_lease_held(file_priv, crtc->base.id))  in drm_mode_getencoder()
352 		enc_resp->crtc_id = crtc->base.id;  in drm_mode_getencoder()
354 		enc_resp->crtc_id = 0;  in drm_mode_getencoder()
355 	drm_modeset_unlock(&dev->mode_config.connection_mutex);  in drm_mode_getencoder()
357 	enc_resp->encoder_type = encoder->encoder_type;  in drm_mode_getencoder()
358 	enc_resp->encoder_id = encoder->base.id;  in drm_mode_getencoder()
359 	enc_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv,  in drm_mode_getencoder()
360 							  encoder->possible_crtcs);  in drm_mode_getencoder()
361 	enc_resp->possible_clones = encoder->possible_clones;  in drm_mode_getencoder()