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V4L/DVB (8428): videodev: rename 'dev' to 'parent'
[mirror_ubuntu-artful-kernel.git] / drivers / media / video / saa7134 / saa7134-empress.c
CommitLineData
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
35MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
36MODULE_LICENSE("GPL");
37
38static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
674434c6 39
1da177e4
LT
40module_param_array(empress_nr, int, NULL, 0444);
41MODULE_PARM_DESC(empress_nr,"ts device number");
42
ff699e6b 43static unsigned int debug;
1da177e4
LT
44module_param(debug, int, 0644);
45MODULE_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
52static 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
64static 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
76static 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
103done_up:
64f9477f 104 mutex_unlock(&dev->empress_tsq.vb_lock);
1da177e4
LT
105done:
106 return err;
107}
108
109static int ts_release(struct inode *inode, struct file *file)
110{
111 struct saa7134_dev *dev = file->private_data;
112
a1789873
AV
113 mutex_lock(&dev->empress_tsq.vb_lock);
114
053fcb60 115 videobuf_stop(&dev->empress_tsq);
1da177e4 116 videobuf_mmap_free(&dev->empress_tsq);
1da177e4
LT
117
118 /* stop the encoder */
119 ts_reset_encoder(dev);
120
b784e526
RB
121 /* Mute audio */
122 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
123 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
124
913f5fc2
MS
125 dev->empress_users--;
126
a1789873
AV
127 mutex_unlock(&dev->empress_tsq.vb_lock);
128
1da177e4
LT
129 return 0;
130}
131
132static ssize_t
133ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
134{
135 struct saa7134_dev *dev = file->private_data;
136
137 if (!dev->empress_started)
138 ts_init_encoder(dev);
139
140 return videobuf_read_stream(&dev->empress_tsq,
141 data, count, ppos, 0,
142 file->f_flags & O_NONBLOCK);
143}
144
145static unsigned int
146ts_poll(struct file *file, struct poll_table_struct *wait)
147{
148 struct saa7134_dev *dev = file->private_data;
149
150 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
151}
152
153
154static int
155ts_mmap(struct file *file, struct vm_area_struct * vma)
156{
157 struct saa7134_dev *dev = file->private_data;
158
159 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
160}
161
162/*
163 * This function is _not_ called directly, but from
164 * video_generic_ioctl (and maybe others). userspace
165 * copying is done already, arg is a kernel pointer.
166 */
2c10e8a8
MCC
167
168static int empress_querycap(struct file *file, void *priv,
169 struct v4l2_capability *cap)
1da177e4 170{
388748e6 171 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
172
173 strcpy(cap->driver, "saa7134");
174 strlcpy(cap->card, saa7134_boards[dev->board].name,
175 sizeof(cap->card));
176 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
177 cap->version = SAA7134_VERSION_CODE;
178 cap->capabilities =
179 V4L2_CAP_VIDEO_CAPTURE |
180 V4L2_CAP_READWRITE |
181 V4L2_CAP_STREAMING;
182 return 0;
183}
1da177e4 184
2c10e8a8
MCC
185static int empress_enum_input(struct file *file, void *priv,
186 struct v4l2_input *i)
187{
188 if (i->index != 0)
189 return -EINVAL;
1da177e4 190
2c10e8a8
MCC
191 i->type = V4L2_INPUT_TYPE_CAMERA;
192 strcpy(i->name, "CCIR656");
1da177e4 193
2c10e8a8
MCC
194 return 0;
195}
1da177e4 196
2c10e8a8
MCC
197static int empress_g_input(struct file *file, void *priv, unsigned int *i)
198{
199 *i = 0;
200 return 0;
201}
1da177e4 202
2c10e8a8
MCC
203static int empress_s_input(struct file *file, void *priv, unsigned int i)
204{
205 if (i != 0)
206 return -EINVAL;
1da177e4 207
2c10e8a8
MCC
208 return 0;
209}
1da177e4 210
78b526a4 211static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
2c10e8a8
MCC
212 struct v4l2_fmtdesc *f)
213{
214 if (f->index != 0)
215 return -EINVAL;
1da177e4 216
2c10e8a8
MCC
217 strlcpy(f->description, "MPEG TS", sizeof(f->description));
218 f->pixelformat = V4L2_PIX_FMT_MPEG;
1da177e4 219
2c10e8a8
MCC
220 return 0;
221}
1da177e4 222
78b526a4 223static int empress_g_fmt_vid_cap(struct file *file, void *priv,
2c10e8a8
MCC
224 struct v4l2_format *f)
225{
a14fe960 226 struct saa7134_dev *dev = file->private_data;
1da177e4 227
2c10e8a8 228 saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
1da177e4 229
2c10e8a8
MCC
230 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
231 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4 232
2c10e8a8
MCC
233 return 0;
234}
1da177e4 235
78b526a4 236static int empress_s_fmt_vid_cap(struct file *file, void *priv,
2c10e8a8
MCC
237 struct v4l2_format *f)
238{
a14fe960 239 struct saa7134_dev *dev = file->private_data;
1da177e4 240
2c10e8a8 241 saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
1da177e4 242
2c10e8a8
MCC
243 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
244 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
1da177e4 245
2c10e8a8
MCC
246 return 0;
247}
248
249
250static int empress_reqbufs(struct file *file, void *priv,
251 struct v4l2_requestbuffers *p)
252{
a14fe960 253 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
254
255 return videobuf_reqbufs(&dev->empress_tsq, p);
256}
257
258static int empress_querybuf(struct file *file, void *priv,
259 struct v4l2_buffer *b)
260{
a14fe960 261 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
262
263 return videobuf_querybuf(&dev->empress_tsq, b);
264}
265
266static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
267{
a14fe960 268 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
269
270 return videobuf_qbuf(&dev->empress_tsq, b);
271}
272
273static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
274{
a14fe960 275 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
276
277 return videobuf_dqbuf(&dev->empress_tsq, b,
278 file->f_flags & O_NONBLOCK);
279}
280
281static int empress_streamon(struct file *file, void *priv,
282 enum v4l2_buf_type type)
283{
a14fe960 284 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
285
286 return videobuf_streamon(&dev->empress_tsq);
287}
288
289static int empress_streamoff(struct file *file, void *priv,
290 enum v4l2_buf_type type)
291{
a14fe960 292 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
293
294 return videobuf_streamoff(&dev->empress_tsq);
295}
296
8b53b39d
HV
297static int saa7134_i2c_call_saa6752(struct saa7134_dev *dev,
298 unsigned int cmd, void *arg)
299{
300 if (dev->mpeg_i2c_client == NULL)
301 return -EINVAL;
302 return dev->mpeg_i2c_client->driver->command(dev->mpeg_i2c_client,
303 cmd, arg);
304}
305
2c10e8a8
MCC
306static int empress_s_ext_ctrls(struct file *file, void *priv,
307 struct v4l2_ext_controls *ctrls)
308{
a14fe960 309 struct saa7134_dev *dev = file->private_data;
8b53b39d 310 int err;
2c10e8a8
MCC
311
312 /* count == 0 is abused in saa6752hs.c, so that special
313 case is handled here explicitly. */
314 if (ctrls->count == 0)
86b79d66 315 return 0;
1da177e4 316
2c10e8a8
MCC
317 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
318 return -EINVAL;
319
8b53b39d 320 err = saa7134_i2c_call_saa6752(dev, VIDIOC_S_EXT_CTRLS, ctrls);
2c10e8a8
MCC
321 ts_init_encoder(dev);
322
8b53b39d 323 return err;
1da177e4
LT
324}
325
2c10e8a8
MCC
326static int empress_g_ext_ctrls(struct file *file, void *priv,
327 struct v4l2_ext_controls *ctrls)
1da177e4 328{
a14fe960 329 struct saa7134_dev *dev = file->private_data;
2c10e8a8
MCC
330
331 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
332 return -EINVAL;
8b53b39d
HV
333 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls);
334}
2c10e8a8 335
8b53b39d
HV
336static int empress_queryctrl(struct file *file, void *priv,
337 struct v4l2_queryctrl *c)
338{
339 static const u32 user_ctrls[] = {
340 V4L2_CID_USER_CLASS,
341 V4L2_CID_BRIGHTNESS,
342 V4L2_CID_CONTRAST,
343 V4L2_CID_SATURATION,
344 V4L2_CID_HUE,
345 V4L2_CID_AUDIO_VOLUME,
346 V4L2_CID_AUDIO_MUTE,
347 V4L2_CID_HFLIP,
348 0
349 };
350
351 static const u32 mpeg_ctrls[] = {
352 V4L2_CID_MPEG_CLASS,
353 V4L2_CID_MPEG_STREAM_TYPE,
354 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
355 V4L2_CID_MPEG_AUDIO_ENCODING,
356 V4L2_CID_MPEG_AUDIO_L2_BITRATE,
357 V4L2_CID_MPEG_VIDEO_ENCODING,
358 V4L2_CID_MPEG_VIDEO_ASPECT,
359 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
360 V4L2_CID_MPEG_VIDEO_BITRATE,
361 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
362 0
363 };
364 static const u32 *ctrl_classes[] = {
365 user_ctrls,
366 mpeg_ctrls,
367 NULL
368 };
369 struct saa7134_dev *dev = file->private_data;
370
371 c->id = v4l2_ctrl_next(ctrl_classes, c->id);
372 if (c->id == 0)
373 return -EINVAL;
374 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
375 return v4l2_ctrl_query_fill_std(c);
376 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
377 return saa7134_queryctrl(file, priv, c);
378 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYCTRL, c);
379}
380
381static int empress_querymenu(struct file *file, void *priv,
382 struct v4l2_querymenu *c)
383{
384 struct saa7134_dev *dev = file->private_data;
385
386 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
387 return -EINVAL;
388 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c);
1da177e4
LT
389}
390
fa027c2a 391static const struct file_operations ts_fops =
1da177e4
LT
392{
393 .owner = THIS_MODULE,
394 .open = ts_open,
395 .release = ts_release,
396 .read = ts_read,
397 .poll = ts_poll,
398 .mmap = ts_mmap,
2c10e8a8 399 .ioctl = video_ioctl2,
1da177e4
LT
400 .llseek = no_llseek,
401};
402
403/* ----------------------------------------------------------- */
404
405static struct video_device saa7134_empress_template =
406{
407 .name = "saa7134-empress",
408 .type = 0 /* FIXME */,
409 .type2 = 0 /* FIXME */,
1da177e4
LT
410 .fops = &ts_fops,
411 .minor = -1,
2c10e8a8
MCC
412
413 .vidioc_querycap = empress_querycap,
78b526a4
HV
414 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
415 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
416 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
2c10e8a8
MCC
417 .vidioc_reqbufs = empress_reqbufs,
418 .vidioc_querybuf = empress_querybuf,
419 .vidioc_qbuf = empress_qbuf,
420 .vidioc_dqbuf = empress_dqbuf,
421 .vidioc_streamon = empress_streamon,
422 .vidioc_streamoff = empress_streamoff,
423 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
424 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
425 .vidioc_enum_input = empress_enum_input,
426 .vidioc_g_input = empress_g_input,
427 .vidioc_s_input = empress_s_input,
428
8b53b39d
HV
429 .vidioc_queryctrl = empress_queryctrl,
430 .vidioc_querymenu = empress_querymenu,
2c10e8a8
MCC
431 .vidioc_g_ctrl = saa7134_g_ctrl,
432 .vidioc_s_ctrl = saa7134_s_ctrl,
433
434 .tvnorms = SAA7134_NORMS,
435 .current_norm = V4L2_STD_PAL,
1da177e4
LT
436};
437
c4028958 438static void empress_signal_update(struct work_struct *work)
1da177e4 439{
c4028958
DH
440 struct saa7134_dev* dev =
441 container_of(work, struct saa7134_dev, empress_workqueue);
1da177e4
LT
442
443 if (dev->nosignal) {
444 dprintk("no video signal\n");
445 ts_reset_encoder(dev);
446 } else {
447 dprintk("video signal acquired\n");
448 if (dev->empress_users)
449 ts_init_encoder(dev);
450 }
451}
452
453static void empress_signal_change(struct saa7134_dev *dev)
454{
455 schedule_work(&dev->empress_workqueue);
456}
457
458
459static int empress_init(struct saa7134_dev *dev)
460{
461 int err;
462
5016381c 463 dprintk("%s: %s\n",dev->name,__func__);
1da177e4
LT
464 dev->empress_dev = video_device_alloc();
465 if (NULL == dev->empress_dev)
466 return -ENOMEM;
467 *(dev->empress_dev) = saa7134_empress_template;
5e85e732 468 dev->empress_dev->parent = &dev->pci->dev;
1da177e4
LT
469 dev->empress_dev->release = video_device_release;
470 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
471 "%s empress (%s)", dev->name,
472 saa7134_boards[dev->board].name);
473
c4028958 474 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
1da177e4
LT
475
476 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
477 empress_nr[dev->nr]);
478 if (err < 0) {
479 printk(KERN_INFO "%s: can't register video device\n",
480 dev->name);
481 video_device_release(dev->empress_dev);
482 dev->empress_dev = NULL;
483 return err;
484 }
485 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
486 dev->name,dev->empress_dev->minor & 0x1f);
487
0705135e
GL
488 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
489 &dev->pci->dev, &dev->slock,
1da177e4
LT
490 V4L2_BUF_TYPE_VIDEO_CAPTURE,
491 V4L2_FIELD_ALTERNATE,
492 sizeof(struct saa7134_buf),
493 dev);
494
c4028958 495 empress_signal_update(&dev->empress_workqueue);
1da177e4
LT
496 return 0;
497}
498
499static int empress_fini(struct saa7134_dev *dev)
500{
5016381c 501 dprintk("%s: %s\n",dev->name,__func__);
1da177e4
LT
502
503 if (NULL == dev->empress_dev)
504 return 0;
505 flush_scheduled_work();
506 video_unregister_device(dev->empress_dev);
507 dev->empress_dev = NULL;
508 return 0;
509}
510
511static struct saa7134_mpeg_ops empress_ops = {
512 .type = SAA7134_MPEG_EMPRESS,
513 .init = empress_init,
514 .fini = empress_fini,
515 .signal_change = empress_signal_change,
516};
517
518static int __init empress_register(void)
519{
520 return saa7134_ts_register(&empress_ops);
521}
522
523static void __exit empress_unregister(void)
524{
525 saa7134_ts_unregister(&empress_ops);
526}
527
528module_init(empress_register);
529module_exit(empress_unregister);
530
531/* ----------------------------------------------------------- */
532/*
533 * Local variables:
534 * c-basic-offset: 8
535 * End:
536 */