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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | */ | |
19 | ||
20 | #include <linux/init.h> | |
21 | #include <linux/list.h> | |
22 | #include <linux/module.h> | |
1da177e4 LT |
23 | #include <linux/kernel.h> |
24 | #include <linux/slab.h> | |
25 | #include <linux/delay.h> | |
26 | ||
27 | #include "saa7134-reg.h" | |
28 | #include "saa7134.h" | |
29 | ||
30 | #include <media/saa6752hs.h> | |
5e453dc7 | 31 | #include <media/v4l2-common.h> |
1da177e4 LT |
32 | |
33 | /* ------------------------------------------------------------------ */ | |
34 | ||
35 | MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
38 | static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET }; | |
674434c6 | 39 | |
1da177e4 LT |
40 | module_param_array(empress_nr, int, NULL, 0444); |
41 | MODULE_PARM_DESC(empress_nr,"ts device number"); | |
42 | ||
ff699e6b | 43 | static unsigned int debug; |
1da177e4 LT |
44 | module_param(debug, int, 0644); |
45 | MODULE_PARM_DESC(debug,"enable debug messages"); | |
46 | ||
47 | #define dprintk(fmt, arg...) if (debug) \ | |
48 | printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg) | |
49 | ||
50 | /* ------------------------------------------------------------------ */ | |
51 | ||
52 | static void ts_reset_encoder(struct saa7134_dev* dev) | |
53 | { | |
54 | if (!dev->empress_started) | |
55 | return; | |
56 | ||
57 | saa_writeb(SAA7134_SPECIAL_MODE, 0x00); | |
58 | msleep(10); | |
4ac97914 | 59 | saa_writeb(SAA7134_SPECIAL_MODE, 0x01); |
1da177e4 LT |
60 | msleep(100); |
61 | dev->empress_started = 0; | |
62 | } | |
63 | ||
64 | static int ts_init_encoder(struct saa7134_dev* dev) | |
65 | { | |
86b79d66 HV |
66 | struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 }; |
67 | ||
1da177e4 | 68 | ts_reset_encoder(dev); |
86b79d66 | 69 | saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls); |
1da177e4 | 70 | dev->empress_started = 1; |
4ac97914 | 71 | return 0; |
1da177e4 LT |
72 | } |
73 | ||
74 | /* ------------------------------------------------------------------ */ | |
75 | ||
76 | static int ts_open(struct inode *inode, struct file *file) | |
77 | { | |
78 | int minor = iminor(inode); | |
6d28e989 | 79 | struct saa7134_dev *dev; |
1da177e4 LT |
80 | int err; |
81 | ||
6d28e989 TP |
82 | list_for_each_entry(dev, &saa7134_devlist, devlist) |
83 | if (dev->empress_dev && dev->empress_dev->minor == minor) | |
84 | goto found; | |
85 | return -ENODEV; | |
86 | found: | |
1da177e4 LT |
87 | |
88 | dprintk("open minor=%d\n",minor); | |
89 | err = -EBUSY; | |
64f9477f | 90 | if (!mutex_trylock(&dev->empress_tsq.vb_lock)) |
1da177e4 LT |
91 | goto done; |
92 | if (dev->empress_users) | |
93 | goto done_up; | |
94 | ||
b784e526 RB |
95 | /* Unmute audio */ |
96 | saa_writeb(SAA7134_AUDIO_MUTE_CTRL, | |
97 | saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6)); | |
98 | ||
1da177e4 LT |
99 | dev->empress_users++; |
100 | file->private_data = dev; | |
101 | err = 0; | |
102 | ||
103 | done_up: | |
64f9477f | 104 | mutex_unlock(&dev->empress_tsq.vb_lock); |
1da177e4 LT |
105 | done: |
106 | return err; | |
107 | } | |
108 | ||
109 | static int ts_release(struct inode *inode, struct file *file) | |
110 | { | |
111 | struct saa7134_dev *dev = file->private_data; | |
112 | ||
053fcb60 | 113 | videobuf_stop(&dev->empress_tsq); |
1da177e4 LT |
114 | videobuf_mmap_free(&dev->empress_tsq); |
115 | dev->empress_users--; | |
116 | ||
117 | /* stop the encoder */ | |
118 | ts_reset_encoder(dev); | |
119 | ||
b784e526 RB |
120 | /* Mute audio */ |
121 | saa_writeb(SAA7134_AUDIO_MUTE_CTRL, | |
122 | saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6)); | |
123 | ||
1da177e4 LT |
124 | return 0; |
125 | } | |
126 | ||
127 | static ssize_t | |
128 | ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
129 | { | |
130 | struct saa7134_dev *dev = file->private_data; | |
131 | ||
132 | if (!dev->empress_started) | |
133 | ts_init_encoder(dev); | |
134 | ||
135 | return videobuf_read_stream(&dev->empress_tsq, | |
136 | data, count, ppos, 0, | |
137 | file->f_flags & O_NONBLOCK); | |
138 | } | |
139 | ||
140 | static unsigned int | |
141 | ts_poll(struct file *file, struct poll_table_struct *wait) | |
142 | { | |
143 | struct saa7134_dev *dev = file->private_data; | |
144 | ||
145 | return videobuf_poll_stream(file, &dev->empress_tsq, wait); | |
146 | } | |
147 | ||
148 | ||
149 | static int | |
150 | ts_mmap(struct file *file, struct vm_area_struct * vma) | |
151 | { | |
152 | struct saa7134_dev *dev = file->private_data; | |
153 | ||
154 | return videobuf_mmap_mapper(&dev->empress_tsq, vma); | |
155 | } | |
156 | ||
157 | /* | |
158 | * This function is _not_ called directly, but from | |
159 | * video_generic_ioctl (and maybe others). userspace | |
160 | * copying is done already, arg is a kernel pointer. | |
161 | */ | |
2c10e8a8 MCC |
162 | |
163 | static int empress_querycap(struct file *file, void *priv, | |
164 | struct v4l2_capability *cap) | |
1da177e4 | 165 | { |
2c10e8a8 MCC |
166 | struct saa7134_fh *fh = priv; |
167 | struct saa7134_dev *dev = fh->dev; | |
168 | ||
169 | strcpy(cap->driver, "saa7134"); | |
170 | strlcpy(cap->card, saa7134_boards[dev->board].name, | |
171 | sizeof(cap->card)); | |
172 | sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci)); | |
173 | cap->version = SAA7134_VERSION_CODE; | |
174 | cap->capabilities = | |
175 | V4L2_CAP_VIDEO_CAPTURE | | |
176 | V4L2_CAP_READWRITE | | |
177 | V4L2_CAP_STREAMING; | |
178 | return 0; | |
179 | } | |
1da177e4 | 180 | |
2c10e8a8 MCC |
181 | static int empress_enum_input(struct file *file, void *priv, |
182 | struct v4l2_input *i) | |
183 | { | |
184 | if (i->index != 0) | |
185 | return -EINVAL; | |
1da177e4 | 186 | |
2c10e8a8 MCC |
187 | i->type = V4L2_INPUT_TYPE_CAMERA; |
188 | strcpy(i->name, "CCIR656"); | |
1da177e4 | 189 | |
2c10e8a8 MCC |
190 | return 0; |
191 | } | |
1da177e4 | 192 | |
2c10e8a8 MCC |
193 | static int empress_g_input(struct file *file, void *priv, unsigned int *i) |
194 | { | |
195 | *i = 0; | |
196 | return 0; | |
197 | } | |
1da177e4 | 198 | |
2c10e8a8 MCC |
199 | static int empress_s_input(struct file *file, void *priv, unsigned int i) |
200 | { | |
201 | if (i != 0) | |
202 | return -EINVAL; | |
1da177e4 | 203 | |
2c10e8a8 MCC |
204 | return 0; |
205 | } | |
1da177e4 | 206 | |
2c10e8a8 MCC |
207 | static int empress_enum_fmt_cap(struct file *file, void *priv, |
208 | struct v4l2_fmtdesc *f) | |
209 | { | |
210 | if (f->index != 0) | |
211 | return -EINVAL; | |
1da177e4 | 212 | |
2c10e8a8 MCC |
213 | strlcpy(f->description, "MPEG TS", sizeof(f->description)); |
214 | f->pixelformat = V4L2_PIX_FMT_MPEG; | |
1da177e4 | 215 | |
2c10e8a8 MCC |
216 | return 0; |
217 | } | |
1da177e4 | 218 | |
2c10e8a8 MCC |
219 | static int empress_g_fmt_cap(struct file *file, void *priv, |
220 | struct v4l2_format *f) | |
221 | { | |
222 | struct saa7134_fh *fh = priv; | |
223 | struct saa7134_dev *dev = fh->dev; | |
1da177e4 | 224 | |
2c10e8a8 | 225 | saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f); |
1da177e4 | 226 | |
2c10e8a8 MCC |
227 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
228 | f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; | |
1da177e4 | 229 | |
2c10e8a8 MCC |
230 | return 0; |
231 | } | |
1da177e4 | 232 | |
2c10e8a8 MCC |
233 | static int empress_s_fmt_cap(struct file *file, void *priv, |
234 | struct v4l2_format *f) | |
235 | { | |
236 | struct saa7134_fh *fh = priv; | |
237 | struct saa7134_dev *dev = fh->dev; | |
1da177e4 | 238 | |
2c10e8a8 | 239 | saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f); |
1da177e4 | 240 | |
2c10e8a8 MCC |
241 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
242 | f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; | |
1da177e4 | 243 | |
2c10e8a8 MCC |
244 | return 0; |
245 | } | |
246 | ||
247 | ||
248 | static int empress_reqbufs(struct file *file, void *priv, | |
249 | struct v4l2_requestbuffers *p) | |
250 | { | |
251 | struct saa7134_fh *fh = priv; | |
252 | struct saa7134_dev *dev = fh->dev; | |
253 | ||
254 | return videobuf_reqbufs(&dev->empress_tsq, p); | |
255 | } | |
256 | ||
257 | static int empress_querybuf(struct file *file, void *priv, | |
258 | struct v4l2_buffer *b) | |
259 | { | |
260 | struct saa7134_fh *fh = priv; | |
261 | struct saa7134_dev *dev = fh->dev; | |
262 | ||
263 | return videobuf_querybuf(&dev->empress_tsq, b); | |
264 | } | |
265 | ||
266 | static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
267 | { | |
268 | struct saa7134_fh *fh = priv; | |
269 | struct saa7134_dev *dev = fh->dev; | |
270 | ||
271 | return videobuf_qbuf(&dev->empress_tsq, b); | |
272 | } | |
273 | ||
274 | static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
275 | { | |
276 | struct saa7134_fh *fh = priv; | |
277 | struct saa7134_dev *dev = fh->dev; | |
278 | ||
279 | return videobuf_dqbuf(&dev->empress_tsq, b, | |
280 | file->f_flags & O_NONBLOCK); | |
281 | } | |
282 | ||
283 | static int empress_streamon(struct file *file, void *priv, | |
284 | enum v4l2_buf_type type) | |
285 | { | |
286 | struct saa7134_fh *fh = priv; | |
287 | struct saa7134_dev *dev = fh->dev; | |
288 | ||
289 | return videobuf_streamon(&dev->empress_tsq); | |
290 | } | |
291 | ||
292 | static int empress_streamoff(struct file *file, void *priv, | |
293 | enum v4l2_buf_type type) | |
294 | { | |
295 | struct saa7134_fh *fh = priv; | |
296 | struct saa7134_dev *dev = fh->dev; | |
297 | ||
298 | return videobuf_streamoff(&dev->empress_tsq); | |
299 | } | |
300 | ||
301 | static int empress_s_ext_ctrls(struct file *file, void *priv, | |
302 | struct v4l2_ext_controls *ctrls) | |
303 | { | |
304 | struct saa7134_fh *fh = priv; | |
305 | struct saa7134_dev *dev = fh->dev; | |
306 | ||
307 | /* count == 0 is abused in saa6752hs.c, so that special | |
308 | case is handled here explicitly. */ | |
309 | if (ctrls->count == 0) | |
86b79d66 | 310 | return 0; |
1da177e4 | 311 | |
2c10e8a8 MCC |
312 | if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) |
313 | return -EINVAL; | |
314 | ||
315 | saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, ctrls); | |
316 | ts_init_encoder(dev); | |
317 | ||
1da177e4 LT |
318 | return 0; |
319 | } | |
320 | ||
2c10e8a8 MCC |
321 | static int empress_g_ext_ctrls(struct file *file, void *priv, |
322 | struct v4l2_ext_controls *ctrls) | |
1da177e4 | 323 | { |
2c10e8a8 MCC |
324 | struct saa7134_fh *fh = priv; |
325 | struct saa7134_dev *dev = fh->dev; | |
326 | ||
327 | if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG) | |
328 | return -EINVAL; | |
329 | saa7134_i2c_call_clients(dev, VIDIOC_G_EXT_CTRLS, ctrls); | |
330 | ||
331 | return 0; | |
1da177e4 LT |
332 | } |
333 | ||
fa027c2a | 334 | static const struct file_operations ts_fops = |
1da177e4 LT |
335 | { |
336 | .owner = THIS_MODULE, | |
337 | .open = ts_open, | |
338 | .release = ts_release, | |
339 | .read = ts_read, | |
340 | .poll = ts_poll, | |
341 | .mmap = ts_mmap, | |
2c10e8a8 | 342 | .ioctl = video_ioctl2, |
1da177e4 LT |
343 | .llseek = no_llseek, |
344 | }; | |
345 | ||
346 | /* ----------------------------------------------------------- */ | |
347 | ||
348 | static struct video_device saa7134_empress_template = | |
349 | { | |
350 | .name = "saa7134-empress", | |
351 | .type = 0 /* FIXME */, | |
352 | .type2 = 0 /* FIXME */, | |
1da177e4 LT |
353 | .fops = &ts_fops, |
354 | .minor = -1, | |
2c10e8a8 MCC |
355 | |
356 | .vidioc_querycap = empress_querycap, | |
357 | .vidioc_enum_fmt_cap = empress_enum_fmt_cap, | |
358 | .vidioc_s_fmt_cap = empress_s_fmt_cap, | |
359 | .vidioc_g_fmt_cap = empress_g_fmt_cap, | |
360 | .vidioc_reqbufs = empress_reqbufs, | |
361 | .vidioc_querybuf = empress_querybuf, | |
362 | .vidioc_qbuf = empress_qbuf, | |
363 | .vidioc_dqbuf = empress_dqbuf, | |
364 | .vidioc_streamon = empress_streamon, | |
365 | .vidioc_streamoff = empress_streamoff, | |
366 | .vidioc_s_ext_ctrls = empress_s_ext_ctrls, | |
367 | .vidioc_g_ext_ctrls = empress_g_ext_ctrls, | |
368 | .vidioc_enum_input = empress_enum_input, | |
369 | .vidioc_g_input = empress_g_input, | |
370 | .vidioc_s_input = empress_s_input, | |
371 | ||
372 | .vidioc_queryctrl = saa7134_queryctrl, | |
373 | .vidioc_g_ctrl = saa7134_g_ctrl, | |
374 | .vidioc_s_ctrl = saa7134_s_ctrl, | |
375 | ||
376 | .tvnorms = SAA7134_NORMS, | |
377 | .current_norm = V4L2_STD_PAL, | |
1da177e4 LT |
378 | }; |
379 | ||
c4028958 | 380 | static void empress_signal_update(struct work_struct *work) |
1da177e4 | 381 | { |
c4028958 DH |
382 | struct saa7134_dev* dev = |
383 | container_of(work, struct saa7134_dev, empress_workqueue); | |
1da177e4 LT |
384 | |
385 | if (dev->nosignal) { | |
386 | dprintk("no video signal\n"); | |
387 | ts_reset_encoder(dev); | |
388 | } else { | |
389 | dprintk("video signal acquired\n"); | |
390 | if (dev->empress_users) | |
391 | ts_init_encoder(dev); | |
392 | } | |
393 | } | |
394 | ||
395 | static void empress_signal_change(struct saa7134_dev *dev) | |
396 | { | |
397 | schedule_work(&dev->empress_workqueue); | |
398 | } | |
399 | ||
400 | ||
401 | static int empress_init(struct saa7134_dev *dev) | |
402 | { | |
403 | int err; | |
404 | ||
405 | dprintk("%s: %s\n",dev->name,__FUNCTION__); | |
406 | dev->empress_dev = video_device_alloc(); | |
407 | if (NULL == dev->empress_dev) | |
408 | return -ENOMEM; | |
409 | *(dev->empress_dev) = saa7134_empress_template; | |
410 | dev->empress_dev->dev = &dev->pci->dev; | |
411 | dev->empress_dev->release = video_device_release; | |
412 | snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name), | |
413 | "%s empress (%s)", dev->name, | |
414 | saa7134_boards[dev->board].name); | |
415 | ||
c4028958 | 416 | INIT_WORK(&dev->empress_workqueue, empress_signal_update); |
1da177e4 LT |
417 | |
418 | err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, | |
419 | empress_nr[dev->nr]); | |
420 | if (err < 0) { | |
421 | printk(KERN_INFO "%s: can't register video device\n", | |
422 | dev->name); | |
423 | video_device_release(dev->empress_dev); | |
424 | dev->empress_dev = NULL; | |
425 | return err; | |
426 | } | |
427 | printk(KERN_INFO "%s: registered device video%d [mpeg]\n", | |
428 | dev->name,dev->empress_dev->minor & 0x1f); | |
429 | ||
c1accaa2 | 430 | videobuf_queue_pci_init(&dev->empress_tsq, &saa7134_ts_qops, |
1da177e4 LT |
431 | dev->pci, &dev->slock, |
432 | V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
433 | V4L2_FIELD_ALTERNATE, | |
434 | sizeof(struct saa7134_buf), | |
435 | dev); | |
436 | ||
c4028958 | 437 | empress_signal_update(&dev->empress_workqueue); |
1da177e4 LT |
438 | return 0; |
439 | } | |
440 | ||
441 | static int empress_fini(struct saa7134_dev *dev) | |
442 | { | |
443 | dprintk("%s: %s\n",dev->name,__FUNCTION__); | |
444 | ||
445 | if (NULL == dev->empress_dev) | |
446 | return 0; | |
447 | flush_scheduled_work(); | |
448 | video_unregister_device(dev->empress_dev); | |
449 | dev->empress_dev = NULL; | |
450 | return 0; | |
451 | } | |
452 | ||
453 | static struct saa7134_mpeg_ops empress_ops = { | |
454 | .type = SAA7134_MPEG_EMPRESS, | |
455 | .init = empress_init, | |
456 | .fini = empress_fini, | |
457 | .signal_change = empress_signal_change, | |
458 | }; | |
459 | ||
460 | static int __init empress_register(void) | |
461 | { | |
462 | return saa7134_ts_register(&empress_ops); | |
463 | } | |
464 | ||
465 | static void __exit empress_unregister(void) | |
466 | { | |
467 | saa7134_ts_unregister(&empress_ops); | |
468 | } | |
469 | ||
470 | module_init(empress_register); | |
471 | module_exit(empress_unregister); | |
472 | ||
473 | /* ----------------------------------------------------------- */ | |
474 | /* | |
475 | * Local variables: | |
476 | * c-basic-offset: 8 | |
477 | * End: | |
478 | */ |