Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dvbdev.c | |
3 | * | |
4 | * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> | |
5 | * & Marcus Metzler <marcus@convergence.de> | |
6 | * for convergence integrated media GmbH | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public License | |
10 | * as published by the Free Software Foundation; either version 2.1 | |
11 | * of the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/types.h> | |
25 | #include <linux/errno.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/module.h> | |
1da177e4 | 28 | #include <linux/kernel.h> |
1da177e4 LT |
29 | #include <linux/init.h> |
30 | #include <linux/slab.h> | |
31 | #include <linux/device.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/cdev.h> | |
1e4baed3 | 34 | #include <linux/mutex.h> |
1da177e4 LT |
35 | #include "dvbdev.h" |
36 | ||
188d2d55 MCC |
37 | /* Due to enum tuner_pad_index */ |
38 | #include <media/tuner.h> | |
39 | ||
72024f1e | 40 | static DEFINE_MUTEX(dvbdev_mutex); |
1da177e4 LT |
41 | static int dvbdev_debug; |
42 | ||
43 | module_param(dvbdev_debug, int, 0644); | |
44 | MODULE_PARM_DESC(dvbdev_debug, "Turn on/off device debugging (default:off)."); | |
45 | ||
46 | #define dprintk if (dvbdev_debug) printk | |
47 | ||
48 | static LIST_HEAD(dvb_adapter_list); | |
1e4baed3 | 49 | static DEFINE_MUTEX(dvbdev_register_lock); |
1da177e4 LT |
50 | |
51 | static const char * const dnames[] = { | |
afd1a0c9 | 52 | "video", "audio", "sec", "frontend", "demux", "dvr", "ca", |
1da177e4 LT |
53 | "net", "osd" |
54 | }; | |
55 | ||
5dd3f307 AO |
56 | #ifdef CONFIG_DVB_DYNAMIC_MINORS |
57 | #define MAX_DVB_MINORS 256 | |
58 | #define DVB_MAX_IDS MAX_DVB_MINORS | |
59 | #else | |
1da177e4 | 60 | #define DVB_MAX_IDS 4 |
0ede1876 | 61 | #define nums2minor(num, type, id) ((num << 6) | (id << 4) | type) |
1da177e4 | 62 | #define MAX_DVB_MINORS (DVB_MAX_ADAPTERS*64) |
5dd3f307 | 63 | #endif |
1da177e4 | 64 | |
56b22935 | 65 | static struct class *dvb_class; |
1da177e4 | 66 | |
5dd3f307 AO |
67 | static struct dvb_device *dvb_minors[MAX_DVB_MINORS]; |
68 | static DECLARE_RWSEM(minor_rwsem); | |
1da177e4 LT |
69 | |
70 | static int dvb_device_open(struct inode *inode, struct file *file) | |
71 | { | |
72 | struct dvb_device *dvbdev; | |
73 | ||
72024f1e | 74 | mutex_lock(&dvbdev_mutex); |
5dd3f307 AO |
75 | down_read(&minor_rwsem); |
76 | dvbdev = dvb_minors[iminor(inode)]; | |
1da177e4 LT |
77 | |
78 | if (dvbdev && dvbdev->fops) { | |
79 | int err = 0; | |
e84f9e57 | 80 | const struct file_operations *new_fops; |
1da177e4 | 81 | |
e84f9e57 AV |
82 | new_fops = fops_get(dvbdev->fops); |
83 | if (!new_fops) | |
f41ced8f | 84 | goto fail; |
e84f9e57 AV |
85 | file->private_data = dvbdev; |
86 | replace_fops(file, new_fops); | |
87 | if (file->f_op->open) | |
0ede1876 | 88 | err = file->f_op->open(inode, file); |
5dd3f307 | 89 | up_read(&minor_rwsem); |
72024f1e | 90 | mutex_unlock(&dvbdev_mutex); |
afd1a0c9 | 91 | return err; |
1da177e4 | 92 | } |
f41ced8f | 93 | fail: |
5dd3f307 | 94 | up_read(&minor_rwsem); |
72024f1e | 95 | mutex_unlock(&dvbdev_mutex); |
1da177e4 LT |
96 | return -ENODEV; |
97 | } | |
98 | ||
99 | ||
27a643b1 | 100 | static const struct file_operations dvb_device_fops = |
1da177e4 LT |
101 | { |
102 | .owner = THIS_MODULE, | |
103 | .open = dvb_device_open, | |
6038f373 | 104 | .llseek = noop_llseek, |
1da177e4 LT |
105 | }; |
106 | ||
7e7654a9 | 107 | static struct cdev dvb_device_cdev; |
1da177e4 LT |
108 | |
109 | int dvb_generic_open(struct inode *inode, struct file *file) | |
110 | { | |
afd1a0c9 | 111 | struct dvb_device *dvbdev = file->private_data; |
1da177e4 | 112 | |
afd1a0c9 MCC |
113 | if (!dvbdev) |
114 | return -ENODEV; | |
1da177e4 LT |
115 | |
116 | if (!dvbdev->users) | |
afd1a0c9 | 117 | return -EBUSY; |
1da177e4 LT |
118 | |
119 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { | |
afd1a0c9 MCC |
120 | if (!dvbdev->readers) |
121 | return -EBUSY; | |
1da177e4 LT |
122 | dvbdev->readers--; |
123 | } else { | |
afd1a0c9 MCC |
124 | if (!dvbdev->writers) |
125 | return -EBUSY; | |
1da177e4 LT |
126 | dvbdev->writers--; |
127 | } | |
128 | ||
129 | dvbdev->users--; | |
130 | return 0; | |
131 | } | |
132 | EXPORT_SYMBOL(dvb_generic_open); | |
133 | ||
134 | ||
135 | int dvb_generic_release(struct inode *inode, struct file *file) | |
136 | { | |
afd1a0c9 | 137 | struct dvb_device *dvbdev = file->private_data; |
1da177e4 LT |
138 | |
139 | if (!dvbdev) | |
afd1a0c9 | 140 | return -ENODEV; |
1da177e4 LT |
141 | |
142 | if ((file->f_flags & O_ACCMODE) == O_RDONLY) { | |
143 | dvbdev->readers++; | |
144 | } else { | |
145 | dvbdev->writers++; | |
146 | } | |
147 | ||
148 | dvbdev->users++; | |
149 | return 0; | |
150 | } | |
151 | EXPORT_SYMBOL(dvb_generic_release); | |
152 | ||
153 | ||
16ef8def AB |
154 | long dvb_generic_ioctl(struct file *file, |
155 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 156 | { |
afd1a0c9 | 157 | struct dvb_device *dvbdev = file->private_data; |
1da177e4 | 158 | |
afd1a0c9 MCC |
159 | if (!dvbdev) |
160 | return -ENODEV; | |
1da177e4 LT |
161 | |
162 | if (!dvbdev->kernel_ioctl) | |
163 | return -EINVAL; | |
164 | ||
72024f1e | 165 | return dvb_usercopy(file, cmd, arg, dvbdev->kernel_ioctl); |
1da177e4 LT |
166 | } |
167 | EXPORT_SYMBOL(dvb_generic_ioctl); | |
168 | ||
169 | ||
170 | static int dvbdev_get_free_id (struct dvb_adapter *adap, int type) | |
171 | { | |
172 | u32 id = 0; | |
173 | ||
174 | while (id < DVB_MAX_IDS) { | |
79482619 TP |
175 | struct dvb_device *dev; |
176 | list_for_each_entry(dev, &adap->device_list, list_head) | |
1da177e4 LT |
177 | if (dev->type == type && dev->id == id) |
178 | goto skip; | |
1da177e4 LT |
179 | return id; |
180 | skip: | |
181 | id++; | |
182 | } | |
183 | return -ENFILE; | |
184 | } | |
185 | ||
f50d5166 MCC |
186 | static void dvb_media_device_free(struct dvb_device *dvbdev) |
187 | { | |
188 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) | |
189 | if (dvbdev->entity) { | |
190 | media_device_unregister_entity(dvbdev->entity); | |
191 | kfree(dvbdev->entity); | |
192 | kfree(dvbdev->pads); | |
193 | dvbdev->entity = NULL; | |
194 | dvbdev->pads = NULL; | |
195 | } | |
196 | ||
197 | if (dvbdev->tsout_entity) { | |
198 | int i; | |
199 | ||
200 | for (i = 0; i < dvbdev->tsout_num_entities; i++) { | |
201 | media_device_unregister_entity(&dvbdev->tsout_entity[i]); | |
202 | kfree(dvbdev->tsout_entity[i].name); | |
203 | } | |
204 | kfree(dvbdev->tsout_entity); | |
205 | kfree(dvbdev->tsout_pads); | |
206 | dvbdev->tsout_entity = NULL; | |
207 | dvbdev->tsout_pads = NULL; | |
208 | ||
209 | dvbdev->tsout_num_entities = 0; | |
210 | } | |
211 | ||
212 | if (dvbdev->intf_devnode) { | |
213 | media_devnode_remove(dvbdev->intf_devnode); | |
214 | dvbdev->intf_devnode = NULL; | |
215 | } | |
0230d60e MCC |
216 | |
217 | if (dvbdev->adapter->conn) { | |
218 | media_device_unregister_entity(dvbdev->adapter->conn); | |
219 | dvbdev->adapter->conn = NULL; | |
220 | kfree(dvbdev->adapter->conn_pads); | |
221 | dvbdev->adapter->conn_pads = NULL; | |
222 | } | |
f50d5166 MCC |
223 | #endif |
224 | } | |
225 | ||
0820eb5c | 226 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) |
f50d5166 | 227 | static int dvb_create_tsout_entity(struct dvb_device *dvbdev, |
df2f94e5 MCC |
228 | const char *name, int npads) |
229 | { | |
df2f94e5 MCC |
230 | int i, ret = 0; |
231 | ||
232 | dvbdev->tsout_pads = kcalloc(npads, sizeof(*dvbdev->tsout_pads), | |
233 | GFP_KERNEL); | |
234 | if (!dvbdev->tsout_pads) | |
f50d5166 MCC |
235 | return -ENOMEM; |
236 | ||
df2f94e5 MCC |
237 | dvbdev->tsout_entity = kcalloc(npads, sizeof(*dvbdev->tsout_entity), |
238 | GFP_KERNEL); | |
f50d5166 MCC |
239 | if (!dvbdev->tsout_entity) |
240 | return -ENOMEM; | |
241 | ||
242 | dvbdev->tsout_num_entities = npads; | |
243 | ||
df2f94e5 MCC |
244 | for (i = 0; i < npads; i++) { |
245 | struct media_pad *pads = &dvbdev->tsout_pads[i]; | |
246 | struct media_entity *entity = &dvbdev->tsout_entity[i]; | |
247 | ||
248 | entity->name = kasprintf(GFP_KERNEL, "%s #%d", name, i); | |
f50d5166 MCC |
249 | if (!entity->name) |
250 | return -ENOMEM; | |
df2f94e5 | 251 | |
4ca72efa | 252 | entity->function = MEDIA_ENT_F_IO_DTV; |
df2f94e5 MCC |
253 | pads->flags = MEDIA_PAD_FL_SINK; |
254 | ||
ab22e77c | 255 | ret = media_entity_pads_init(entity, 1, pads); |
df2f94e5 | 256 | if (ret < 0) |
f50d5166 | 257 | return ret; |
df2f94e5 MCC |
258 | |
259 | ret = media_device_register_entity(dvbdev->adapter->mdev, | |
260 | entity); | |
261 | if (ret < 0) | |
f50d5166 | 262 | return ret; |
df2f94e5 | 263 | } |
f50d5166 | 264 | return 0; |
df2f94e5 MCC |
265 | } |
266 | ||
267 | #define DEMUX_TSOUT "demux-tsout" | |
268 | #define DVR_TSOUT "dvr-tsout" | |
269 | ||
f50d5166 MCC |
270 | static int dvb_create_media_entity(struct dvb_device *dvbdev, |
271 | int type, int demux_sink_pads) | |
a0246e02 | 272 | { |
f50d5166 | 273 | int i, ret, npads; |
a0246e02 | 274 | |
8211b187 MCC |
275 | switch (type) { |
276 | case DVB_DEVICE_FRONTEND: | |
277 | npads = 2; | |
278 | break; | |
df2f94e5 | 279 | case DVB_DEVICE_DVR: |
f50d5166 MCC |
280 | ret = dvb_create_tsout_entity(dvbdev, DVR_TSOUT, |
281 | demux_sink_pads); | |
282 | return ret; | |
8211b187 | 283 | case DVB_DEVICE_DEMUX: |
df2f94e5 | 284 | npads = 1 + demux_sink_pads; |
f50d5166 MCC |
285 | ret = dvb_create_tsout_entity(dvbdev, DEMUX_TSOUT, |
286 | demux_sink_pads); | |
287 | if (ret < 0) | |
288 | return ret; | |
8211b187 MCC |
289 | break; |
290 | case DVB_DEVICE_CA: | |
291 | npads = 2; | |
292 | break; | |
293 | case DVB_DEVICE_NET: | |
294 | /* | |
295 | * We should be creating entities for the MPE/ULE | |
296 | * decapsulation hardware (or software implementation). | |
297 | * | |
298 | * However, the number of for the MPE/ULE decaps may not be | |
299 | * fixed. As we don't have yet dynamic support for PADs at | |
300 | * the Media Controller, let's not create the decap | |
301 | * entities yet. | |
302 | */ | |
f50d5166 | 303 | return 0; |
8211b187 | 304 | default: |
f50d5166 | 305 | return 0; |
8211b187 | 306 | } |
a0246e02 MCC |
307 | |
308 | dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL); | |
309 | if (!dvbdev->entity) | |
f50d5166 | 310 | return -ENOMEM; |
a0246e02 | 311 | |
a0246e02 | 312 | dvbdev->entity->name = dvbdev->name; |
172e9d3c | 313 | |
172e9d3c MCC |
314 | if (npads) { |
315 | dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads), | |
316 | GFP_KERNEL); | |
f50d5166 MCC |
317 | if (!dvbdev->pads) |
318 | return -ENOMEM; | |
172e9d3c MCC |
319 | } |
320 | ||
a0246e02 MCC |
321 | switch (type) { |
322 | case DVB_DEVICE_FRONTEND: | |
4ca72efa | 323 | dvbdev->entity->function = MEDIA_ENT_F_DTV_DEMOD; |
3bde1b78 MCC |
324 | dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; |
325 | dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; | |
a0246e02 MCC |
326 | break; |
327 | case DVB_DEVICE_DEMUX: | |
4ca72efa | 328 | dvbdev->entity->function = MEDIA_ENT_F_TS_DEMUX; |
3bde1b78 | 329 | dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; |
df2f94e5 MCC |
330 | for (i = 1; i < npads; i++) |
331 | dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE; | |
a0246e02 | 332 | break; |
a0246e02 | 333 | case DVB_DEVICE_CA: |
4ca72efa | 334 | dvbdev->entity->function = MEDIA_ENT_F_DTV_CA; |
3bde1b78 MCC |
335 | dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; |
336 | dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; | |
a0246e02 | 337 | break; |
a0246e02 | 338 | default: |
f50d5166 | 339 | /* Should never happen, as the first switch prevents it */ |
a0246e02 | 340 | kfree(dvbdev->entity); |
f50d5166 | 341 | kfree(dvbdev->pads); |
a0246e02 | 342 | dvbdev->entity = NULL; |
f50d5166 MCC |
343 | dvbdev->pads = NULL; |
344 | return 0; | |
a0246e02 MCC |
345 | } |
346 | ||
f50d5166 | 347 | if (npads) { |
ab22e77c | 348 | ret = media_entity_pads_init(dvbdev->entity, npads, dvbdev->pads); |
f50d5166 MCC |
349 | if (ret) |
350 | return ret; | |
a0246e02 | 351 | } |
f50d5166 MCC |
352 | ret = media_device_register_entity(dvbdev->adapter->mdev, |
353 | dvbdev->entity); | |
354 | if (ret) | |
eac287ad | 355 | return ret; |
a0246e02 | 356 | |
8211b187 | 357 | printk(KERN_DEBUG "%s: media entity '%s' registered.\n", |
a0246e02 | 358 | __func__, dvbdev->entity->name); |
f50d5166 | 359 | |
f50d5166 | 360 | return 0; |
a0246e02 | 361 | } |
0820eb5c | 362 | #endif |
1da177e4 | 363 | |
f50d5166 MCC |
364 | static int dvb_register_media_device(struct dvb_device *dvbdev, |
365 | int type, int minor, | |
366 | unsigned demux_sink_pads) | |
8211b187 MCC |
367 | { |
368 | #if defined(CONFIG_MEDIA_CONTROLLER_DVB) | |
f50d5166 | 369 | struct media_link *link; |
8211b187 | 370 | u32 intf_type; |
f50d5166 | 371 | int ret; |
8211b187 MCC |
372 | |
373 | if (!dvbdev->adapter->mdev) | |
f50d5166 | 374 | return 0; |
8211b187 | 375 | |
f50d5166 MCC |
376 | ret = dvb_create_media_entity(dvbdev, type, demux_sink_pads); |
377 | if (ret) | |
378 | return ret; | |
8211b187 MCC |
379 | |
380 | switch (type) { | |
381 | case DVB_DEVICE_FRONTEND: | |
382 | intf_type = MEDIA_INTF_T_DVB_FE; | |
383 | break; | |
384 | case DVB_DEVICE_DEMUX: | |
385 | intf_type = MEDIA_INTF_T_DVB_DEMUX; | |
386 | break; | |
387 | case DVB_DEVICE_DVR: | |
388 | intf_type = MEDIA_INTF_T_DVB_DVR; | |
389 | break; | |
390 | case DVB_DEVICE_CA: | |
391 | intf_type = MEDIA_INTF_T_DVB_CA; | |
392 | break; | |
393 | case DVB_DEVICE_NET: | |
394 | intf_type = MEDIA_INTF_T_DVB_NET; | |
395 | break; | |
396 | default: | |
f50d5166 | 397 | return 0; |
8211b187 MCC |
398 | } |
399 | ||
400 | dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev, | |
f50d5166 | 401 | intf_type, 0, |
0b3b72df | 402 | DVB_MAJOR, minor); |
f50d5166 MCC |
403 | |
404 | if (!dvbdev->intf_devnode) | |
405 | return -ENOMEM; | |
8211b187 MCC |
406 | |
407 | /* | |
408 | * Create the "obvious" link, e. g. the ones that represent | |
409 | * a direct association between an interface and an entity. | |
410 | * Other links should be created elsewhere, like: | |
411 | * DVB FE intf -> tuner | |
412 | * DVB demux intf -> dvr | |
413 | */ | |
414 | ||
f50d5166 MCC |
415 | if (!dvbdev->entity) |
416 | return 0; | |
8211b187 | 417 | |
f50d5166 MCC |
418 | link = media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, |
419 | MEDIA_LNK_FL_ENABLED); | |
420 | if (!link) | |
421 | return -ENOMEM; | |
8211b187 | 422 | #endif |
f50d5166 | 423 | return 0; |
8211b187 MCC |
424 | } |
425 | ||
1da177e4 | 426 | int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, |
df2f94e5 MCC |
427 | const struct dvb_device *template, void *priv, int type, |
428 | int demux_sink_pads) | |
1da177e4 LT |
429 | { |
430 | struct dvb_device *dvbdev; | |
b6190102 | 431 | struct file_operations *dvbdevfops; |
5f553388 | 432 | struct device *clsdev; |
5dd3f307 | 433 | int minor; |
f50d5166 | 434 | int id, ret; |
1da177e4 | 435 | |
c2788502 | 436 | mutex_lock(&dvbdev_register_lock); |
1da177e4 | 437 | |
b6190102 | 438 | if ((id = dvbdev_get_free_id (adap, type)) < 0){ |
1e4baed3 | 439 | mutex_unlock(&dvbdev_register_lock); |
1da177e4 | 440 | *pdvbdev = NULL; |
46b4f7c1 | 441 | printk(KERN_ERR "%s: couldn't find free device id\n", __func__); |
1da177e4 LT |
442 | return -ENFILE; |
443 | } | |
444 | ||
f50d5166 | 445 | *pdvbdev = dvbdev = kzalloc(sizeof(*dvbdev), GFP_KERNEL); |
1da177e4 | 446 | |
b6190102 MS |
447 | if (!dvbdev){ |
448 | mutex_unlock(&dvbdev_register_lock); | |
449 | return -ENOMEM; | |
450 | } | |
451 | ||
452 | dvbdevfops = kzalloc(sizeof(struct file_operations), GFP_KERNEL); | |
453 | ||
454 | if (!dvbdevfops){ | |
455 | kfree (dvbdev); | |
1e4baed3 | 456 | mutex_unlock(&dvbdev_register_lock); |
1da177e4 LT |
457 | return -ENOMEM; |
458 | } | |
459 | ||
1da177e4 LT |
460 | memcpy(dvbdev, template, sizeof(struct dvb_device)); |
461 | dvbdev->type = type; | |
462 | dvbdev->id = id; | |
463 | dvbdev->adapter = adap; | |
464 | dvbdev->priv = priv; | |
b6190102 | 465 | dvbdev->fops = dvbdevfops; |
ca5be9cd | 466 | init_waitqueue_head (&dvbdev->wait_queue); |
1da177e4 | 467 | |
784e29d2 JE |
468 | memcpy(dvbdevfops, template->fops, sizeof(struct file_operations)); |
469 | dvbdevfops->owner = adap->module; | |
1da177e4 LT |
470 | |
471 | list_add_tail (&dvbdev->list_head, &adap->device_list); | |
472 | ||
5dd3f307 AO |
473 | down_write(&minor_rwsem); |
474 | #ifdef CONFIG_DVB_DYNAMIC_MINORS | |
475 | for (minor = 0; minor < MAX_DVB_MINORS; minor++) | |
476 | if (dvb_minors[minor] == NULL) | |
477 | break; | |
478 | ||
479 | if (minor == MAX_DVB_MINORS) { | |
480 | kfree(dvbdevfops); | |
481 | kfree(dvbdev); | |
82163edc | 482 | up_write(&minor_rwsem); |
5dd3f307 AO |
483 | mutex_unlock(&dvbdev_register_lock); |
484 | return -EINVAL; | |
485 | } | |
486 | #else | |
487 | minor = nums2minor(adap->num, type, id); | |
488 | #endif | |
489 | ||
490 | dvbdev->minor = minor; | |
491 | dvb_minors[minor] = dvbdev; | |
492 | up_write(&minor_rwsem); | |
493 | ||
f50d5166 MCC |
494 | ret = dvb_register_media_device(dvbdev, type, minor, demux_sink_pads); |
495 | if (ret) { | |
496 | printk(KERN_ERR | |
497 | "%s: dvb_register_media_device failed to create the mediagraph\n", | |
498 | __func__); | |
499 | ||
500 | dvb_media_device_free(dvbdev); | |
501 | kfree(dvbdevfops); | |
502 | kfree(dvbdev); | |
503 | up_write(&minor_rwsem); | |
504 | mutex_unlock(&dvbdev_register_lock); | |
505 | return ret; | |
506 | } | |
507 | ||
f47f4763 AQ |
508 | mutex_unlock(&dvbdev_register_lock); |
509 | ||
a9b12619 | 510 | clsdev = device_create(dvb_class, adap->device, |
b7496780 | 511 | MKDEV(DVB_MAJOR, minor), |
a5f4c0ce | 512 | dvbdev, "dvb%d.%s%d", adap->num, dnames[type], id); |
4abdcf93 SA |
513 | if (IS_ERR(clsdev)) { |
514 | printk(KERN_ERR "%s: failed to create device dvb%d.%s%d (%ld)\n", | |
46b4f7c1 | 515 | __func__, adap->num, dnames[type], id, PTR_ERR(clsdev)); |
4abdcf93 SA |
516 | return PTR_ERR(clsdev); |
517 | } | |
900858ec | 518 | dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n", |
5dd3f307 | 519 | adap->num, dnames[type], id, minor, minor); |
1da177e4 LT |
520 | |
521 | return 0; | |
522 | } | |
523 | EXPORT_SYMBOL(dvb_register_device); | |
524 | ||
525 | ||
526 | void dvb_unregister_device(struct dvb_device *dvbdev) | |
527 | { | |
528 | if (!dvbdev) | |
529 | return; | |
530 | ||
5dd3f307 AO |
531 | down_write(&minor_rwsem); |
532 | dvb_minors[dvbdev->minor] = NULL; | |
533 | up_write(&minor_rwsem); | |
534 | ||
f50d5166 | 535 | dvb_media_device_free(dvbdev); |
df2f94e5 | 536 | |
f50d5166 | 537 | device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor)); |
a0246e02 | 538 | |
1da177e4 | 539 | list_del (&dvbdev->list_head); |
b6190102 | 540 | kfree (dvbdev->fops); |
1da177e4 LT |
541 | kfree (dvbdev); |
542 | } | |
543 | EXPORT_SYMBOL(dvb_unregister_device); | |
544 | ||
4155109a | 545 | |
4155109a | 546 | #ifdef CONFIG_MEDIA_CONTROLLER_DVB |
17813e2a MCC |
547 | |
548 | static int dvb_create_io_intf_links(struct dvb_adapter *adap, | |
549 | struct media_interface *intf, | |
550 | char *name) | |
551 | { | |
552 | struct media_device *mdev = adap->mdev; | |
553 | struct media_entity *entity; | |
554 | struct media_link *link; | |
555 | ||
556 | media_device_for_each_entity(entity, mdev) { | |
557 | if (entity->function == MEDIA_ENT_F_IO_DTV) { | |
558 | if (strncmp(entity->name, name, strlen(name))) | |
559 | continue; | |
560 | link = media_create_intf_link(entity, intf, | |
561 | MEDIA_LNK_FL_ENABLED); | |
562 | if (!link) | |
563 | return -ENOMEM; | |
564 | } | |
565 | } | |
566 | return 0; | |
567 | } | |
568 | ||
0230d60e MCC |
569 | int dvb_create_media_graph(struct dvb_adapter *adap, |
570 | bool create_rf_connector) | |
480884b6 MCC |
571 | { |
572 | struct media_device *mdev = adap->mdev; | |
0230d60e | 573 | struct media_entity *entity, *tuner = NULL, *demod = NULL, *conn; |
df2f94e5 | 574 | struct media_entity *demux = NULL, *ca = NULL; |
f50d5166 | 575 | struct media_link *link; |
8ddb90d2 | 576 | struct media_interface *intf; |
df2f94e5 MCC |
577 | unsigned demux_pad = 0; |
578 | unsigned dvr_pad = 0; | |
a0cce2a0 | 579 | unsigned ntuner = 0, ndemod = 0; |
f50d5166 | 580 | int ret; |
0230d60e | 581 | static const char *connector_name = "Television"; |
4155109a MCC |
582 | |
583 | if (!mdev) | |
f50d5166 | 584 | return 0; |
4155109a MCC |
585 | |
586 | media_device_for_each_entity(entity, mdev) { | |
0e576b76 | 587 | switch (entity->function) { |
4ca72efa | 588 | case MEDIA_ENT_F_TUNER: |
4155109a | 589 | tuner = entity; |
a0cce2a0 | 590 | ntuner++; |
4155109a | 591 | break; |
4ca72efa | 592 | case MEDIA_ENT_F_DTV_DEMOD: |
32fdc0e1 | 593 | demod = entity; |
a0cce2a0 | 594 | ndemod++; |
4155109a | 595 | break; |
4ca72efa | 596 | case MEDIA_ENT_F_TS_DEMUX: |
4155109a MCC |
597 | demux = entity; |
598 | break; | |
4ca72efa | 599 | case MEDIA_ENT_F_DTV_CA: |
4155109a MCC |
600 | ca = entity; |
601 | break; | |
602 | } | |
603 | } | |
604 | ||
a0cce2a0 MCC |
605 | /* |
606 | * Prepare to signalize to media_create_pad_links() that multiple | |
607 | * entities of the same type exists and a 1:n or n:1 links need to be | |
608 | * created. | |
609 | * NOTE: if both tuner and demod have multiple instances, it is up | |
610 | * to the caller driver to create such links. | |
611 | */ | |
612 | if (ntuner > 1) | |
613 | tuner = NULL; | |
614 | if (ndemod > 1) | |
615 | demod = NULL; | |
616 | ||
0230d60e MCC |
617 | if (create_rf_connector) { |
618 | conn = kzalloc(sizeof(*conn), GFP_KERNEL); | |
619 | if (!conn) | |
620 | return -ENOMEM; | |
621 | adap->conn = conn; | |
622 | ||
5c3fbc5e | 623 | adap->conn_pads = kzalloc(sizeof(*adap->conn_pads), GFP_KERNEL); |
0230d60e MCC |
624 | if (!adap->conn_pads) |
625 | return -ENOMEM; | |
626 | ||
627 | conn->flags = MEDIA_ENT_FL_CONNECTOR; | |
628 | conn->function = MEDIA_ENT_F_CONN_RF; | |
629 | conn->name = connector_name; | |
630 | adap->conn_pads->flags = MEDIA_PAD_FL_SOURCE; | |
631 | ||
632 | ret = media_entity_pads_init(conn, 1, adap->conn_pads); | |
633 | if (ret) | |
634 | return ret; | |
635 | ||
636 | ret = media_device_register_entity(mdev, conn); | |
637 | if (ret) | |
638 | return ret; | |
639 | ||
a0cce2a0 MCC |
640 | if (!ntuner) |
641 | ret = media_create_pad_links(mdev, | |
642 | MEDIA_ENT_F_CONN_RF, | |
643 | conn, 0, | |
644 | MEDIA_ENT_F_DTV_DEMOD, | |
645 | demod, 0, | |
646 | MEDIA_LNK_FL_ENABLED, | |
647 | false); | |
0230d60e | 648 | else |
a0cce2a0 MCC |
649 | ret = media_create_pad_links(mdev, |
650 | MEDIA_ENT_F_CONN_RF, | |
651 | conn, 0, | |
652 | MEDIA_ENT_F_TUNER, | |
653 | tuner, TUNER_PAD_RF_INPUT, | |
654 | MEDIA_LNK_FL_ENABLED, | |
655 | false); | |
0230d60e MCC |
656 | if (ret) |
657 | return ret; | |
658 | } | |
659 | ||
a0cce2a0 MCC |
660 | if (ntuner && ndemod) { |
661 | ret = media_create_pad_links(mdev, | |
662 | MEDIA_ENT_F_TUNER, | |
163c9bca | 663 | tuner, TUNER_PAD_OUTPUT, |
a0cce2a0 MCC |
664 | MEDIA_ENT_F_DTV_DEMOD, |
665 | demod, 0, MEDIA_LNK_FL_ENABLED, | |
666 | false); | |
f50d5166 MCC |
667 | if (ret) |
668 | return ret; | |
669 | } | |
4155109a | 670 | |
a0cce2a0 MCC |
671 | if (ndemod && demux) { |
672 | ret = media_create_pad_links(mdev, | |
673 | MEDIA_ENT_F_DTV_DEMOD, | |
674 | demod, 1, | |
675 | MEDIA_ENT_F_TS_DEMUX, | |
676 | demux, 0, MEDIA_LNK_FL_ENABLED, | |
677 | false); | |
f50d5166 | 678 | if (ret) |
acc37e8f | 679 | return ret; |
f50d5166 MCC |
680 | } |
681 | if (demux && ca) { | |
682 | ret = media_create_pad_link(demux, 1, ca, | |
683 | 0, MEDIA_LNK_FL_ENABLED); | |
711f3fba | 684 | if (ret) |
acc37e8f | 685 | return ret; |
f50d5166 | 686 | } |
8ddb90d2 | 687 | |
df2f94e5 MCC |
688 | /* Create demux links for each ringbuffer/pad */ |
689 | if (demux) { | |
690 | media_device_for_each_entity(entity, mdev) { | |
4ca72efa | 691 | if (entity->function == MEDIA_ENT_F_IO_DTV) { |
df2f94e5 | 692 | if (!strncmp(entity->name, DVR_TSOUT, |
f50d5166 MCC |
693 | strlen(DVR_TSOUT))) { |
694 | ret = media_create_pad_link(demux, | |
695 | ++dvr_pad, | |
696 | entity, 0, 0); | |
697 | if (ret) | |
698 | return ret; | |
699 | } | |
df2f94e5 | 700 | if (!strncmp(entity->name, DEMUX_TSOUT, |
f50d5166 MCC |
701 | strlen(DEMUX_TSOUT))) { |
702 | ret = media_create_pad_link(demux, | |
df2f94e5 | 703 | ++demux_pad, |
f50d5166 MCC |
704 | entity, 0, 0); |
705 | if (ret) | |
706 | return ret; | |
707 | } | |
df2f94e5 MCC |
708 | } |
709 | } | |
710 | } | |
711 | ||
8ed07142 | 712 | /* Create interface links for FE->tuner, DVR->demux and CA->ca */ |
cf975a4b | 713 | media_device_for_each_intf(intf, mdev) { |
f50d5166 MCC |
714 | if (intf->type == MEDIA_INTF_T_DVB_CA && ca) { |
715 | link = media_create_intf_link(ca, intf, | |
716 | MEDIA_LNK_FL_ENABLED); | |
717 | if (!link) | |
718 | return -ENOMEM; | |
719 | } | |
cf975a4b | 720 | |
f50d5166 MCC |
721 | if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) { |
722 | link = media_create_intf_link(tuner, intf, | |
723 | MEDIA_LNK_FL_ENABLED); | |
724 | if (!link) | |
725 | return -ENOMEM; | |
726 | } | |
8ed07142 MCC |
727 | #if 0 |
728 | /* | |
729 | * Indirect link - let's not create yet, as we don't know how | |
730 | * to handle indirect links, nor if this will | |
731 | * actually be needed. | |
732 | */ | |
f50d5166 MCC |
733 | if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) { |
734 | link = media_create_intf_link(demux, intf, | |
735 | MEDIA_LNK_FL_ENABLED); | |
736 | if (!link) | |
737 | return -ENOMEM; | |
738 | } | |
8ed07142 | 739 | #endif |
17813e2a MCC |
740 | if (intf->type == MEDIA_INTF_T_DVB_DVR) { |
741 | ret = dvb_create_io_intf_links(adap, intf, DVR_TSOUT); | |
742 | if (ret) | |
743 | return ret; | |
744 | } | |
745 | if (intf->type == MEDIA_INTF_T_DVB_DEMUX) { | |
746 | ret = dvb_create_io_intf_links(adap, intf, DEMUX_TSOUT); | |
747 | if (ret) | |
748 | return ret; | |
df2f94e5 | 749 | } |
8ddb90d2 | 750 | } |
f50d5166 | 751 | return 0; |
4155109a MCC |
752 | } |
753 | EXPORT_SYMBOL_GPL(dvb_create_media_graph); | |
480884b6 | 754 | #endif |
4155109a | 755 | |
78e92006 JG |
756 | static int dvbdev_check_free_adapter_num(int num) |
757 | { | |
758 | struct list_head *entry; | |
759 | list_for_each(entry, &dvb_adapter_list) { | |
760 | struct dvb_adapter *adap; | |
761 | adap = list_entry(entry, struct dvb_adapter, list_head); | |
762 | if (adap->num == num) | |
763 | return 0; | |
764 | } | |
765 | return 1; | |
766 | } | |
1da177e4 LT |
767 | |
768 | static int dvbdev_get_free_adapter_num (void) | |
769 | { | |
770 | int num = 0; | |
771 | ||
772 | while (num < DVB_MAX_ADAPTERS) { | |
78e92006 JG |
773 | if (dvbdev_check_free_adapter_num(num)) |
774 | return num; | |
1da177e4 LT |
775 | num++; |
776 | } | |
777 | ||
778 | return -ENFILE; | |
779 | } | |
780 | ||
781 | ||
78e92006 JG |
782 | int dvb_register_adapter(struct dvb_adapter *adap, const char *name, |
783 | struct module *module, struct device *device, | |
784 | short *adapter_nums) | |
1da177e4 | 785 | { |
78e92006 | 786 | int i, num; |
1da177e4 | 787 | |
c2788502 | 788 | mutex_lock(&dvbdev_register_lock); |
1da177e4 | 789 | |
78e92006 JG |
790 | for (i = 0; i < DVB_MAX_ADAPTERS; ++i) { |
791 | num = adapter_nums[i]; | |
792 | if (num >= 0 && num < DVB_MAX_ADAPTERS) { | |
793 | /* use the one the driver asked for */ | |
794 | if (dvbdev_check_free_adapter_num(num)) | |
795 | break; | |
796 | } else { | |
797 | num = dvbdev_get_free_adapter_num(); | |
798 | break; | |
799 | } | |
800 | num = -1; | |
801 | } | |
802 | ||
803 | if (num < 0) { | |
1e4baed3 | 804 | mutex_unlock(&dvbdev_register_lock); |
1da177e4 LT |
805 | return -ENFILE; |
806 | } | |
807 | ||
1da177e4 LT |
808 | memset (adap, 0, sizeof(struct dvb_adapter)); |
809 | INIT_LIST_HEAD (&adap->device_list); | |
810 | ||
900858ec | 811 | printk(KERN_INFO "DVB: registering new adapter (%s)\n", name); |
1da177e4 | 812 | |
1da177e4 LT |
813 | adap->num = num; |
814 | adap->name = name; | |
815 | adap->module = module; | |
d09dbf92 | 816 | adap->device = device; |
59b1842d DB |
817 | adap->mfe_shared = 0; |
818 | adap->mfe_dvbdev = NULL; | |
819 | mutex_init (&adap->mfe_lock); | |
1da177e4 LT |
820 | |
821 | list_add_tail (&adap->list_head, &dvb_adapter_list); | |
822 | ||
1e4baed3 | 823 | mutex_unlock(&dvbdev_register_lock); |
1da177e4 LT |
824 | |
825 | return num; | |
826 | } | |
827 | EXPORT_SYMBOL(dvb_register_adapter); | |
828 | ||
829 | ||
830 | int dvb_unregister_adapter(struct dvb_adapter *adap) | |
831 | { | |
c2788502 | 832 | mutex_lock(&dvbdev_register_lock); |
1da177e4 | 833 | list_del (&adap->list_head); |
1e4baed3 | 834 | mutex_unlock(&dvbdev_register_lock); |
1da177e4 LT |
835 | return 0; |
836 | } | |
837 | EXPORT_SYMBOL(dvb_unregister_adapter); | |
838 | ||
839 | /* if the miracle happens and "generic_usercopy()" is included into | |
840 | the kernel, then this can vanish. please don't make the mistake and | |
841 | define this as video_usercopy(). this will introduce a dependecy | |
842 | to the v4l "videodev.o" module, which is unnecessary for some | |
843 | cards (ie. the budget dvb-cards don't need the v4l module...) */ | |
16ef8def | 844 | int dvb_usercopy(struct file *file, |
afd1a0c9 | 845 | unsigned int cmd, unsigned long arg, |
16ef8def | 846 | int (*func)(struct file *file, |
1da177e4 LT |
847 | unsigned int cmd, void *arg)) |
848 | { | |
afd1a0c9 MCC |
849 | char sbuf[128]; |
850 | void *mbuf = NULL; | |
851 | void *parg = NULL; | |
852 | int err = -EINVAL; | |
853 | ||
854 | /* Copy arguments into temp kernel buffer */ | |
855 | switch (_IOC_DIR(cmd)) { | |
856 | case _IOC_NONE: | |
1da177e4 LT |
857 | /* |
858 | * For this command, the pointer is actually an integer | |
859 | * argument. | |
860 | */ | |
861 | parg = (void *) arg; | |
862 | break; | |
afd1a0c9 MCC |
863 | case _IOC_READ: /* some v4l ioctls are marked wrong ... */ |
864 | case _IOC_WRITE: | |
865 | case (_IOC_WRITE | _IOC_READ): | |
866 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { | |
50c25fff | 867 | parg = sbuf; |
afd1a0c9 | 868 | } else { |
50c25fff | 869 | /* too big to allocate from stack */ |
0ede1876 | 870 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); |
50c25fff MK |
871 | if (NULL == mbuf) |
872 | return -ENOMEM; | |
873 | parg = mbuf; | |
afd1a0c9 MCC |
874 | } |
875 | ||
876 | err = -EFAULT; | |
877 | if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) | |
50c25fff | 878 | goto out; |
afd1a0c9 MCC |
879 | break; |
880 | } | |
881 | ||
882 | /* call driver */ | |
16ef8def | 883 | if ((err = func(file, cmd, parg)) == -ENOIOCTLCMD) |
d9751fd0 | 884 | err = -ENOTTY; |
afd1a0c9 MCC |
885 | |
886 | if (err < 0) | |
887 | goto out; | |
888 | ||
889 | /* Copy results into user buffer */ | |
890 | switch (_IOC_DIR(cmd)) | |
891 | { | |
892 | case _IOC_READ: | |
893 | case (_IOC_WRITE | _IOC_READ): | |
894 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
50c25fff | 895 | err = -EFAULT; |
afd1a0c9 MCC |
896 | break; |
897 | } | |
1da177e4 LT |
898 | |
899 | out: | |
afd1a0c9 MCC |
900 | kfree(mbuf); |
901 | return err; | |
1da177e4 LT |
902 | } |
903 | ||
a5f4c0ce KS |
904 | static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env) |
905 | { | |
906 | struct dvb_device *dvbdev = dev_get_drvdata(dev); | |
907 | ||
a5f4c0ce | 908 | add_uevent_var(env, "DVB_ADAPTER_NUM=%d", dvbdev->adapter->num); |
763d19bb KS |
909 | add_uevent_var(env, "DVB_DEVICE_TYPE=%s", dnames[dvbdev->type]); |
910 | add_uevent_var(env, "DVB_DEVICE_NUM=%d", dvbdev->id); | |
a5f4c0ce KS |
911 | return 0; |
912 | } | |
913 | ||
2c9ede55 | 914 | static char *dvb_devnode(struct device *dev, umode_t *mode) |
8a8bdcc7 KS |
915 | { |
916 | struct dvb_device *dvbdev = dev_get_drvdata(dev); | |
917 | ||
918 | return kasprintf(GFP_KERNEL, "dvb/adapter%d/%s%d", | |
919 | dvbdev->adapter->num, dnames[dvbdev->type], dvbdev->id); | |
920 | } | |
921 | ||
922 | ||
1da177e4 LT |
923 | static int __init init_dvbdev(void) |
924 | { | |
925 | int retval; | |
926 | dev_t dev = MKDEV(DVB_MAJOR, 0); | |
927 | ||
928 | if ((retval = register_chrdev_region(dev, MAX_DVB_MINORS, "DVB")) != 0) { | |
900858ec | 929 | printk(KERN_ERR "dvb-core: unable to get major %d\n", DVB_MAJOR); |
1da177e4 LT |
930 | return retval; |
931 | } | |
932 | ||
933 | cdev_init(&dvb_device_cdev, &dvb_device_fops); | |
934 | if ((retval = cdev_add(&dvb_device_cdev, dev, MAX_DVB_MINORS)) != 0) { | |
900858ec | 935 | printk(KERN_ERR "dvb-core: unable register character device\n"); |
1da177e4 LT |
936 | goto error; |
937 | } | |
938 | ||
56b22935 | 939 | dvb_class = class_create(THIS_MODULE, "dvb"); |
1da177e4 LT |
940 | if (IS_ERR(dvb_class)) { |
941 | retval = PTR_ERR(dvb_class); | |
942 | goto error; | |
943 | } | |
a5f4c0ce | 944 | dvb_class->dev_uevent = dvb_uevent; |
e454cea2 | 945 | dvb_class->devnode = dvb_devnode; |
1da177e4 LT |
946 | return 0; |
947 | ||
948 | error: | |
949 | cdev_del(&dvb_device_cdev); | |
950 | unregister_chrdev_region(dev, MAX_DVB_MINORS); | |
951 | return retval; | |
952 | } | |
953 | ||
954 | ||
955 | static void __exit exit_dvbdev(void) | |
956 | { | |
56b22935 | 957 | class_destroy(dvb_class); |
1da177e4 | 958 | cdev_del(&dvb_device_cdev); |
afd1a0c9 | 959 | unregister_chrdev_region(MKDEV(DVB_MAJOR, 0), MAX_DVB_MINORS); |
1da177e4 LT |
960 | } |
961 | ||
4abdcf93 | 962 | subsys_initcall(init_dvbdev); |
1da177e4 LT |
963 | module_exit(exit_dvbdev); |
964 | ||
965 | MODULE_DESCRIPTION("DVB Core Driver"); | |
966 | MODULE_AUTHOR("Marcus Metzler, Ralph Metzler, Holger Waechtler"); | |
967 | MODULE_LICENSE("GPL"); |