1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * VIDEO MOTION CODECs internal API for video devices
46 		pr_err("%s: no data\n", __func__);  in videocodec_attach()
53 		  master->name, master->flags, master->magic);  in videocodec_attach()
56 		zrdev_err(zr, "%s: no device available\n", __func__);  in videocodec_attach()
63 		if ((master->flags & h->codec->flags) == master->flags) {  in videocodec_attach()
64 			zrdev_dbg(zr, "%s: try '%s'\n", __func__, h->codec->name);  in videocodec_attach()
66 			codec = kmemdup(h->codec, sizeof(struct videocodec), GFP_KERNEL);  in videocodec_attach()
70 			res = strlen(codec->name);  in videocodec_attach()
71 			snprintf(codec->name + res, sizeof(codec->name) - res, "[%d]", h->attached);  in videocodec_attach()
72 			codec->master_data = master;  in videocodec_attach()
73 			res = codec->setup(codec);  in videocodec_attach()
75 				zrdev_dbg(zr, "%s: '%s'\n", __func__, codec->name);  in videocodec_attach()
79 				ptr->codec = codec;  in videocodec_attach()
81 				a = h->list;  in videocodec_attach()
83 					h->list = ptr;  in videocodec_attach()
86 					while (a->next)  in videocodec_attach()
87 						a = a->next;	// find end  in videocodec_attach()
88 					a->next = ptr;  in videocodec_attach()
90 						  h->codec->name);  in videocodec_attach()
93 				h->attached += 1;  in videocodec_attach()
98 		h = h->next;  in videocodec_attach()
101 	zrdev_err(zr, "%s: no codec found!\n", __func__);  in videocodec_attach()
117 		pr_err("%s: no data\n", __func__);  in videocodec_detach()
118 		return -EINVAL;  in videocodec_detach()
124 		  codec->name, codec->type, codec->flags, codec->magic);  in videocodec_detach()
127 		zrdev_err(zr, "%s: no device left...\n", __func__);  in videocodec_detach()
128 		return -ENXIO;  in videocodec_detach()
132 		a = h->list;  in videocodec_detach()
135 			if (codec == a->codec) {  in videocodec_detach()
136 				res = a->codec->unset(a->codec);  in videocodec_detach()
139 						  a->codec->name);  in videocodec_detach()
140 					a->codec->master_data = NULL;  in videocodec_detach()
142 					zrdev_err(zr, "%s: '%s'\n", __func__, a->codec->name);  in videocodec_detach()
143 					a->codec->master_data = NULL;  in videocodec_detach()
146 					h->list = a->next;  in videocodec_detach()
149 					prev->next = a->next;  in videocodec_detach()
152 				kfree(a->codec);  in videocodec_detach()
154 				h->attached -= 1;  in videocodec_detach()
158 			a = a->next;  in videocodec_detach()
160 		h = h->next;  in videocodec_detach()
164 	return -EINVAL;  in videocodec_detach()
173 		pr_err("%s: no data!\n", __func__);  in videocodec_register()
174 		return -EINVAL;  in videocodec_register()
181 		  codec->name, codec->type, codec->flags, codec->magic);  in videocodec_register()
185 		return -ENOMEM;  in videocodec_register()
186 	ptr->codec = codec;  in videocodec_register()
192 		while (h->next)  in videocodec_register()
193 			h = h->next;	// find the end  in videocodec_register()
194 		h->next = ptr;  in videocodec_register()
196 			  h->codec->name);  in videocodec_register()
208 		pr_err("%s: no data!\n", __func__);  in videocodec_unregister()
209 		return -EINVAL;  in videocodec_unregister()
216 		  codec->name, codec->type, codec->flags, codec->magic);  in videocodec_unregister()
219 		zrdev_err(zr, "%s: no device left...\n", __func__);  in videocodec_unregister()
220 		return -ENXIO;  in videocodec_unregister()
224 		if (codec == h->codec) {  in videocodec_unregister()
225 			if (h->attached) {  in videocodec_unregister()
227 					  h->codec->name);  in videocodec_unregister()
228 				return -EBUSY;  in videocodec_unregister()
231 				  h->codec->name);  in videocodec_unregister()
233 				codeclist_top = h->next;  in videocodec_unregister()
237 				prev->next = h->next;  in videocodec_unregister()
245 		h = h->next;  in videocodec_unregister()
249 	return -EINVAL;  in videocodec_unregister()
262 			   h->codec->name, h->codec->type,  in videocodec_debugfs_show()
263 			      h->codec->flags, h->codec->magic);  in videocodec_debugfs_show()
264 		a = h->list;  in videocodec_debugfs_show()
267 				   a->codec->master_data->name,  in videocodec_debugfs_show()
268 				      a->codec->master_data->type,  in videocodec_debugfs_show()
269 				      a->codec->master_data->flags,  in videocodec_debugfs_show()
270 				      a->codec->master_data->magic,  in videocodec_debugfs_show()
271 				      a->codec->name);  in videocodec_debugfs_show()
272 			a = a->next;  in videocodec_debugfs_show()
274 		h = h->next;  in videocodec_debugfs_show()