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20#include <linux/init.h>
21#include <linux/list.h>
22#include <linux/module.h>
23#include <linux/kernel.h>
24#include <linux/slab.h>
25#include <linux/smp_lock.h>
26#include <linux/delay.h>
27
28#include "saa7134-reg.h"
29#include "saa7134.h"
30
31#include <media/saa6752hs.h>
32#include <media/v4l2-common.h>
33#include <media/v4l2-chip-ident.h>
34
35
36
37MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
38MODULE_LICENSE("GPL");
39
40static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
41
42module_param_array(empress_nr, int, NULL, 0444);
43MODULE_PARM_DESC(empress_nr,"ts device number");
44
45static unsigned int debug;
46module_param(debug, int, 0644);
47MODULE_PARM_DESC(debug,"enable debug messages");
48
49#define dprintk(fmt, arg...) if (debug) \
50 printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
51
52
53
54static void ts_reset_encoder(struct saa7134_dev* dev)
55{
56 if (!dev->empress_started)
57 return;
58
59 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
60 msleep(10);
61 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
62 msleep(100);
63 dev->empress_started = 0;
64}
65
66static int ts_init_encoder(struct saa7134_dev* dev)
67{
68 u32 leading_null_bytes = 0;
69
70
71
72 switch (dev->board) {
73 case SAA7134_BOARD_BEHOLD_M6:
74 case SAA7134_BOARD_BEHOLD_M63:
75 case SAA7134_BOARD_BEHOLD_M6_EXTRA:
76 leading_null_bytes = 1;
77 break;
78 }
79 ts_reset_encoder(dev);
80 saa_call_all(dev, core, init, leading_null_bytes);
81 dev->empress_started = 1;
82 return 0;
83}
84
85
86
87static int ts_open(struct file *file)
88{
89 int minor = video_devdata(file)->minor;
90 struct saa7134_dev *dev;
91 int err;
92
93 lock_kernel();
94 list_for_each_entry(dev, &saa7134_devlist, devlist)
95 if (dev->empress_dev && dev->empress_dev->minor == minor)
96 goto found;
97 unlock_kernel();
98 return -ENODEV;
99 found:
100
101 dprintk("open minor=%d\n",minor);
102 err = -EBUSY;
103 if (!mutex_trylock(&dev->empress_tsq.vb_lock))
104 goto done;
105 if (atomic_read(&dev->empress_users))
106 goto done_up;
107
108
109 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
110 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
111
112 atomic_inc(&dev->empress_users);
113 file->private_data = dev;
114 err = 0;
115
116done_up:
117 mutex_unlock(&dev->empress_tsq.vb_lock);
118done:
119 unlock_kernel();
120 return err;
121}
122
123static int ts_release(struct file *file)
124{
125 struct saa7134_dev *dev = file->private_data;
126
127 videobuf_stop(&dev->empress_tsq);
128 videobuf_mmap_free(&dev->empress_tsq);
129
130
131 ts_reset_encoder(dev);
132
133
134 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
135 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
136
137 atomic_dec(&dev->empress_users);
138
139 return 0;
140}
141
142static ssize_t
143ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
144{
145 struct saa7134_dev *dev = file->private_data;
146
147 if (!dev->empress_started)
148 ts_init_encoder(dev);
149
150 return videobuf_read_stream(&dev->empress_tsq,
151 data, count, ppos, 0,
152 file->f_flags & O_NONBLOCK);
153}
154
155static unsigned int
156ts_poll(struct file *file, struct poll_table_struct *wait)
157{
158 struct saa7134_dev *dev = file->private_data;
159
160 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
161}
162
163
164static int
165ts_mmap(struct file *file, struct vm_area_struct * vma)
166{
167 struct saa7134_dev *dev = file->private_data;
168
169 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
170}
171
172
173
174
175
176
177
178static int empress_querycap(struct file *file, void *priv,
179 struct v4l2_capability *cap)
180{
181 struct saa7134_dev *dev = file->private_data;
182
183 strcpy(cap->driver, "saa7134");
184 strlcpy(cap->card, saa7134_boards[dev->board].name,
185 sizeof(cap->card));
186 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
187 cap->version = SAA7134_VERSION_CODE;
188 cap->capabilities =
189 V4L2_CAP_VIDEO_CAPTURE |
190 V4L2_CAP_READWRITE |
191 V4L2_CAP_STREAMING;
192 return 0;
193}
194
195static int empress_enum_input(struct file *file, void *priv,
196 struct v4l2_input *i)
197{
198 if (i->index != 0)
199 return -EINVAL;
200
201 i->type = V4L2_INPUT_TYPE_CAMERA;
202 strcpy(i->name, "CCIR656");
203
204 return 0;
205}
206
207static int empress_g_input(struct file *file, void *priv, unsigned int *i)
208{
209 *i = 0;
210 return 0;
211}
212
213static int empress_s_input(struct file *file, void *priv, unsigned int i)
214{
215 if (i != 0)
216 return -EINVAL;
217
218 return 0;
219}
220
221static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
222 struct v4l2_fmtdesc *f)
223{
224 if (f->index != 0)
225 return -EINVAL;
226
227 strlcpy(f->description, "MPEG TS", sizeof(f->description));
228 f->pixelformat = V4L2_PIX_FMT_MPEG;
229
230 return 0;
231}
232
233static int empress_g_fmt_vid_cap(struct file *file, void *priv,
234 struct v4l2_format *f)
235{
236 struct saa7134_dev *dev = file->private_data;
237
238 saa_call_all(dev, video, g_fmt, f);
239
240 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
241 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
242
243 return 0;
244}
245
246static int empress_s_fmt_vid_cap(struct file *file, void *priv,
247 struct v4l2_format *f)
248{
249 struct saa7134_dev *dev = file->private_data;
250
251 saa_call_all(dev, video, s_fmt, f);
252
253 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
254 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
255
256 return 0;
257}
258
259static int empress_try_fmt_vid_cap(struct file *file, void *priv,
260 struct v4l2_format *f)
261{
262 struct saa7134_dev *dev = file->private_data;
263
264 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
265 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
266
267 return 0;
268}
269
270static int empress_reqbufs(struct file *file, void *priv,
271 struct v4l2_requestbuffers *p)
272{
273 struct saa7134_dev *dev = file->private_data;
274
275 return videobuf_reqbufs(&dev->empress_tsq, p);
276}
277
278static int empress_querybuf(struct file *file, void *priv,
279 struct v4l2_buffer *b)
280{
281 struct saa7134_dev *dev = file->private_data;
282
283 return videobuf_querybuf(&dev->empress_tsq, b);
284}
285
286static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
287{
288 struct saa7134_dev *dev = file->private_data;
289
290 return videobuf_qbuf(&dev->empress_tsq, b);
291}
292
293static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
294{
295 struct saa7134_dev *dev = file->private_data;
296
297 return videobuf_dqbuf(&dev->empress_tsq, b,
298 file->f_flags & O_NONBLOCK);
299}
300
301static int empress_streamon(struct file *file, void *priv,
302 enum v4l2_buf_type type)
303{
304 struct saa7134_dev *dev = file->private_data;
305
306 return videobuf_streamon(&dev->empress_tsq);
307}
308
309static int empress_streamoff(struct file *file, void *priv,
310 enum v4l2_buf_type type)
311{
312 struct saa7134_dev *dev = file->private_data;
313
314 return videobuf_streamoff(&dev->empress_tsq);
315}
316
317static int empress_s_ext_ctrls(struct file *file, void *priv,
318 struct v4l2_ext_controls *ctrls)
319{
320 struct saa7134_dev *dev = file->private_data;
321 int err;
322
323
324
325 if (ctrls->count == 0)
326 return 0;
327
328 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
329 return -EINVAL;
330
331 err = saa_call_empress(dev, core, s_ext_ctrls, ctrls);
332 ts_init_encoder(dev);
333
334 return err;
335}
336
337static int empress_g_ext_ctrls(struct file *file, void *priv,
338 struct v4l2_ext_controls *ctrls)
339{
340 struct saa7134_dev *dev = file->private_data;
341
342 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
343 return -EINVAL;
344 return saa_call_empress(dev, core, g_ext_ctrls, ctrls);
345}
346
347static int empress_g_ctrl(struct file *file, void *priv,
348 struct v4l2_control *c)
349{
350 struct saa7134_dev *dev = file->private_data;
351
352 return saa7134_g_ctrl_internal(dev, NULL, c);
353}
354
355static int empress_s_ctrl(struct file *file, void *priv,
356 struct v4l2_control *c)
357{
358 struct saa7134_dev *dev = file->private_data;
359
360 return saa7134_s_ctrl_internal(dev, NULL, c);
361}
362
363static int empress_queryctrl(struct file *file, void *priv,
364 struct v4l2_queryctrl *c)
365{
366
367 static const u32 user_ctrls[] = {
368 V4L2_CID_USER_CLASS,
369 V4L2_CID_BRIGHTNESS,
370 V4L2_CID_CONTRAST,
371 V4L2_CID_SATURATION,
372 V4L2_CID_HUE,
373 V4L2_CID_AUDIO_VOLUME,
374 V4L2_CID_AUDIO_MUTE,
375 V4L2_CID_HFLIP,
376 0
377 };
378
379
380 static const u32 mpeg_ctrls[] = {
381 V4L2_CID_MPEG_CLASS,
382 V4L2_CID_MPEG_STREAM_TYPE,
383 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
384 V4L2_CID_MPEG_AUDIO_ENCODING,
385 V4L2_CID_MPEG_AUDIO_L2_BITRATE,
386 V4L2_CID_MPEG_VIDEO_ENCODING,
387 V4L2_CID_MPEG_VIDEO_ASPECT,
388 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
389 V4L2_CID_MPEG_VIDEO_BITRATE,
390 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
391 0
392 };
393 static const u32 *ctrl_classes[] = {
394 user_ctrls,
395 mpeg_ctrls,
396 NULL
397 };
398 struct saa7134_dev *dev = file->private_data;
399
400 c->id = v4l2_ctrl_next(ctrl_classes, c->id);
401 if (c->id == 0)
402 return -EINVAL;
403 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
404 return v4l2_ctrl_query_fill(c, 0, 0, 0, 0);
405 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
406 return saa7134_queryctrl(file, priv, c);
407 return saa_call_empress(dev, core, queryctrl, c);
408}
409
410static int empress_querymenu(struct file *file, void *priv,
411 struct v4l2_querymenu *c)
412{
413 struct saa7134_dev *dev = file->private_data;
414
415 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
416 return -EINVAL;
417 return saa_call_empress(dev, core, querymenu, c);
418}
419
420static int empress_g_chip_ident(struct file *file, void *fh,
421 struct v4l2_dbg_chip_ident *chip)
422{
423 struct saa7134_dev *dev = file->private_data;
424
425 chip->ident = V4L2_IDENT_NONE;
426 chip->revision = 0;
427 if (chip->match.type == V4L2_CHIP_MATCH_I2C_DRIVER &&
428 !strcmp(chip->match.name, "saa6752hs"))
429 return saa_call_empress(dev, core, g_chip_ident, chip);
430 if (chip->match.type == V4L2_CHIP_MATCH_I2C_ADDR)
431 return saa_call_empress(dev, core, g_chip_ident, chip);
432 return -EINVAL;
433}
434
435static int empress_s_std(struct file *file, void *priv, v4l2_std_id *id)
436{
437 struct saa7134_dev *dev = file->private_data;
438
439 return saa7134_s_std_internal(dev, NULL, id);
440}
441
442static int empress_g_std(struct file *file, void *priv, v4l2_std_id *id)
443{
444 struct saa7134_dev *dev = file->private_data;
445
446 *id = dev->tvnorm->id;
447 return 0;
448}
449
450static const struct v4l2_file_operations ts_fops =
451{
452 .owner = THIS_MODULE,
453 .open = ts_open,
454 .release = ts_release,
455 .read = ts_read,
456 .poll = ts_poll,
457 .mmap = ts_mmap,
458 .ioctl = video_ioctl2,
459};
460
461static const struct v4l2_ioctl_ops ts_ioctl_ops = {
462 .vidioc_querycap = empress_querycap,
463 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
464 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,
465 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
466 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
467 .vidioc_reqbufs = empress_reqbufs,
468 .vidioc_querybuf = empress_querybuf,
469 .vidioc_qbuf = empress_qbuf,
470 .vidioc_dqbuf = empress_dqbuf,
471 .vidioc_streamon = empress_streamon,
472 .vidioc_streamoff = empress_streamoff,
473 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
474 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
475 .vidioc_enum_input = empress_enum_input,
476 .vidioc_g_input = empress_g_input,
477 .vidioc_s_input = empress_s_input,
478 .vidioc_queryctrl = empress_queryctrl,
479 .vidioc_querymenu = empress_querymenu,
480 .vidioc_g_ctrl = empress_g_ctrl,
481 .vidioc_s_ctrl = empress_s_ctrl,
482 .vidioc_g_chip_ident = empress_g_chip_ident,
483 .vidioc_s_std = empress_s_std,
484 .vidioc_g_std = empress_g_std,
485};
486
487
488
489static struct video_device saa7134_empress_template = {
490 .name = "saa7134-empress",
491 .fops = &ts_fops,
492 .minor = -1,
493 .ioctl_ops = &ts_ioctl_ops,
494
495 .tvnorms = SAA7134_NORMS,
496 .current_norm = V4L2_STD_PAL,
497};
498
499static void empress_signal_update(struct work_struct *work)
500{
501 struct saa7134_dev* dev =
502 container_of(work, struct saa7134_dev, empress_workqueue);
503
504 if (dev->nosignal) {
505 dprintk("no video signal\n");
506 } else {
507 dprintk("video signal acquired\n");
508 }
509}
510
511static void empress_signal_change(struct saa7134_dev *dev)
512{
513 schedule_work(&dev->empress_workqueue);
514}
515
516
517static int empress_init(struct saa7134_dev *dev)
518{
519 int err;
520
521 dprintk("%s: %s\n",dev->name,__func__);
522 dev->empress_dev = video_device_alloc();
523 if (NULL == dev->empress_dev)
524 return -ENOMEM;
525 *(dev->empress_dev) = saa7134_empress_template;
526 dev->empress_dev->parent = &dev->pci->dev;
527 dev->empress_dev->release = video_device_release;
528 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
529 "%s empress (%s)", dev->name,
530 saa7134_boards[dev->board].name);
531
532 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
533
534 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
535 empress_nr[dev->nr]);
536 if (err < 0) {
537 printk(KERN_INFO "%s: can't register video device\n",
538 dev->name);
539 video_device_release(dev->empress_dev);
540 dev->empress_dev = NULL;
541 return err;
542 }
543 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
544 dev->name, dev->empress_dev->num);
545
546 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
547 &dev->pci->dev, &dev->slock,
548 V4L2_BUF_TYPE_VIDEO_CAPTURE,
549 V4L2_FIELD_ALTERNATE,
550 sizeof(struct saa7134_buf),
551 dev);
552
553 empress_signal_update(&dev->empress_workqueue);
554 return 0;
555}
556
557static int empress_fini(struct saa7134_dev *dev)
558{
559 dprintk("%s: %s\n",dev->name,__func__);
560
561 if (NULL == dev->empress_dev)
562 return 0;
563 flush_scheduled_work();
564 video_unregister_device(dev->empress_dev);
565 dev->empress_dev = NULL;
566 return 0;
567}
568
569static struct saa7134_mpeg_ops empress_ops = {
570 .type = SAA7134_MPEG_EMPRESS,
571 .init = empress_init,
572 .fini = empress_fini,
573 .signal_change = empress_signal_change,
574};
575
576static int __init empress_register(void)
577{
578 return saa7134_ts_register(&empress_ops);
579}
580
581static void __exit empress_unregister(void)
582{
583 saa7134_ts_unregister(&empress_ops);
584}
585
586module_init(empress_register);
587module_exit(empress_unregister);
588
589
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595
