3 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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.
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.
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.
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/delay.h>
27 #include "saa7134-reg.h"
30 #include <media/saa6752hs.h>
31 #include <media/v4l2-common.h>
32 #include <media/v4l2-chip-ident.h>
34 /* ------------------------------------------------------------------ */
36 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
37 MODULE_LICENSE("GPL");
39 static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
41 module_param_array(empress_nr, int, NULL, 0444);
42 MODULE_PARM_DESC(empress_nr,"ts device number");
44 static unsigned int debug;
45 module_param(debug, int, 0644);
46 MODULE_PARM_DESC(debug,"enable debug messages");
48 #define dprintk(fmt, arg...) if (debug) \
49 printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
51 /* ------------------------------------------------------------------ */
53 static void ts_reset_encoder(struct saa7134_dev* dev)
55 if (!dev->empress_started)
58 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
60 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
62 dev->empress_started = 0;
65 static int ts_init_encoder(struct saa7134_dev* dev)
67 struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
69 ts_reset_encoder(dev);
70 saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
71 dev->empress_started = 1;
75 /* ------------------------------------------------------------------ */
77 static int ts_open(struct inode *inode, struct file *file)
79 int minor = iminor(inode);
80 struct saa7134_dev *dev;
84 list_for_each_entry(dev, &saa7134_devlist, devlist)
85 if (dev->empress_dev && dev->empress_dev->minor == minor)
91 dprintk("open minor=%d\n",minor);
93 if (!mutex_trylock(&dev->empress_tsq.vb_lock))
95 if (atomic_read(&dev->empress_users))
99 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
100 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
102 atomic_inc(&dev->empress_users);
103 file->private_data = dev;
107 mutex_unlock(&dev->empress_tsq.vb_lock);
113 static int ts_release(struct inode *inode, struct file *file)
115 struct saa7134_dev *dev = file->private_data;
117 videobuf_stop(&dev->empress_tsq);
118 videobuf_mmap_free(&dev->empress_tsq);
120 /* stop the encoder */
121 ts_reset_encoder(dev);
124 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
125 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
127 atomic_dec(&dev->empress_users);
133 ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
135 struct saa7134_dev *dev = file->private_data;
137 if (!dev->empress_started)
138 ts_init_encoder(dev);
140 return videobuf_read_stream(&dev->empress_tsq,
141 data, count, ppos, 0,
142 file->f_flags & O_NONBLOCK);
146 ts_poll(struct file *file, struct poll_table_struct *wait)
148 struct saa7134_dev *dev = file->private_data;
150 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
155 ts_mmap(struct file *file, struct vm_area_struct * vma)
157 struct saa7134_dev *dev = file->private_data;
159 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
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.
168 static int empress_querycap(struct file *file, void *priv,
169 struct v4l2_capability *cap)
171 struct saa7134_dev *dev = file->private_data;
173 strcpy(cap->driver, "saa7134");
174 strlcpy(cap->card, saa7134_boards[dev->board].name,
176 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
177 cap->version = SAA7134_VERSION_CODE;
179 V4L2_CAP_VIDEO_CAPTURE |
185 static int empress_enum_input(struct file *file, void *priv,
186 struct v4l2_input *i)
191 i->type = V4L2_INPUT_TYPE_CAMERA;
192 strcpy(i->name, "CCIR656");
197 static int empress_g_input(struct file *file, void *priv, unsigned int *i)
203 static int empress_s_input(struct file *file, void *priv, unsigned int i)
211 static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
212 struct v4l2_fmtdesc *f)
217 strlcpy(f->description, "MPEG TS", sizeof(f->description));
218 f->pixelformat = V4L2_PIX_FMT_MPEG;
223 static int empress_g_fmt_vid_cap(struct file *file, void *priv,
224 struct v4l2_format *f)
226 struct saa7134_dev *dev = file->private_data;
228 saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
230 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
231 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
236 static int empress_s_fmt_vid_cap(struct file *file, void *priv,
237 struct v4l2_format *f)
239 struct saa7134_dev *dev = file->private_data;
241 saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
243 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
244 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
250 static int empress_reqbufs(struct file *file, void *priv,
251 struct v4l2_requestbuffers *p)
253 struct saa7134_dev *dev = file->private_data;
255 return videobuf_reqbufs(&dev->empress_tsq, p);
258 static int empress_querybuf(struct file *file, void *priv,
259 struct v4l2_buffer *b)
261 struct saa7134_dev *dev = file->private_data;
263 return videobuf_querybuf(&dev->empress_tsq, b);
266 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
268 struct saa7134_dev *dev = file->private_data;
270 return videobuf_qbuf(&dev->empress_tsq, b);
273 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
275 struct saa7134_dev *dev = file->private_data;
277 return videobuf_dqbuf(&dev->empress_tsq, b,
278 file->f_flags & O_NONBLOCK);
281 static int empress_streamon(struct file *file, void *priv,
282 enum v4l2_buf_type type)
284 struct saa7134_dev *dev = file->private_data;
286 return videobuf_streamon(&dev->empress_tsq);
289 static int empress_streamoff(struct file *file, void *priv,
290 enum v4l2_buf_type type)
292 struct saa7134_dev *dev = file->private_data;
294 return videobuf_streamoff(&dev->empress_tsq);
297 static int saa7134_i2c_call_saa6752(struct saa7134_dev *dev,
298 unsigned int cmd, void *arg)
300 if (dev->mpeg_i2c_client == NULL)
302 return dev->mpeg_i2c_client->driver->command(dev->mpeg_i2c_client,
306 static int empress_s_ext_ctrls(struct file *file, void *priv,
307 struct v4l2_ext_controls *ctrls)
309 struct saa7134_dev *dev = file->private_data;
312 /* count == 0 is abused in saa6752hs.c, so that special
313 case is handled here explicitly. */
314 if (ctrls->count == 0)
317 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
320 err = saa7134_i2c_call_saa6752(dev, VIDIOC_S_EXT_CTRLS, ctrls);
321 ts_init_encoder(dev);
326 static int empress_g_ext_ctrls(struct file *file, void *priv,
327 struct v4l2_ext_controls *ctrls)
329 struct saa7134_dev *dev = file->private_data;
331 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
333 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls);
336 static int empress_g_ctrl(struct file *file, void *priv,
337 struct v4l2_control *c)
339 struct saa7134_dev *dev = file->private_data;
341 return saa7134_g_ctrl_internal(dev, NULL, c);
344 static int empress_s_ctrl(struct file *file, void *priv,
345 struct v4l2_control *c)
347 struct saa7134_dev *dev = file->private_data;
349 return saa7134_s_ctrl_internal(dev, NULL, c);
352 static int empress_queryctrl(struct file *file, void *priv,
353 struct v4l2_queryctrl *c)
355 static const u32 user_ctrls[] = {
361 V4L2_CID_AUDIO_VOLUME,
367 static const u32 mpeg_ctrls[] = {
369 V4L2_CID_MPEG_STREAM_TYPE,
370 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
371 V4L2_CID_MPEG_AUDIO_ENCODING,
372 V4L2_CID_MPEG_AUDIO_L2_BITRATE,
373 V4L2_CID_MPEG_VIDEO_ENCODING,
374 V4L2_CID_MPEG_VIDEO_ASPECT,
375 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
376 V4L2_CID_MPEG_VIDEO_BITRATE,
377 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
380 static const u32 *ctrl_classes[] = {
385 struct saa7134_dev *dev = file->private_data;
387 c->id = v4l2_ctrl_next(ctrl_classes, c->id);
390 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
391 return v4l2_ctrl_query_fill_std(c);
392 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
393 return saa7134_queryctrl(file, priv, c);
394 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYCTRL, c);
397 static int empress_querymenu(struct file *file, void *priv,
398 struct v4l2_querymenu *c)
400 struct saa7134_dev *dev = file->private_data;
402 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
404 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c);
407 static int empress_g_chip_ident(struct file *file, void *fh,
408 struct v4l2_chip_ident *chip)
410 struct saa7134_dev *dev = file->private_data;
412 chip->ident = V4L2_IDENT_NONE;
414 if (dev->mpeg_i2c_client == NULL)
416 if (chip->match_type == V4L2_CHIP_MATCH_I2C_DRIVER &&
417 chip->match_chip == I2C_DRIVERID_SAA6752HS)
418 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
419 if (chip->match_type == V4L2_CHIP_MATCH_I2C_ADDR &&
420 chip->match_chip == dev->mpeg_i2c_client->addr)
421 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
426 static const struct file_operations ts_fops =
428 .owner = THIS_MODULE,
430 .release = ts_release,
434 .ioctl = video_ioctl2,
438 static const struct v4l2_ioctl_ops ts_ioctl_ops = {
439 .vidioc_querycap = empress_querycap,
440 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
441 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
442 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
443 .vidioc_reqbufs = empress_reqbufs,
444 .vidioc_querybuf = empress_querybuf,
445 .vidioc_qbuf = empress_qbuf,
446 .vidioc_dqbuf = empress_dqbuf,
447 .vidioc_streamon = empress_streamon,
448 .vidioc_streamoff = empress_streamoff,
449 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
450 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
451 .vidioc_enum_input = empress_enum_input,
452 .vidioc_g_input = empress_g_input,
453 .vidioc_s_input = empress_s_input,
454 .vidioc_queryctrl = empress_queryctrl,
455 .vidioc_querymenu = empress_querymenu,
456 .vidioc_g_ctrl = empress_g_ctrl,
457 .vidioc_s_ctrl = empress_s_ctrl,
458 .vidioc_g_chip_ident = empress_g_chip_ident,
461 /* ----------------------------------------------------------- */
463 static struct video_device saa7134_empress_template = {
464 .name = "saa7134-empress",
467 .ioctl_ops = &ts_ioctl_ops,
469 .tvnorms = SAA7134_NORMS,
470 .current_norm = V4L2_STD_PAL,
473 static void empress_signal_update(struct work_struct *work)
475 struct saa7134_dev* dev =
476 container_of(work, struct saa7134_dev, empress_workqueue);
479 dprintk("no video signal\n");
480 ts_reset_encoder(dev);
482 dprintk("video signal acquired\n");
483 if (atomic_read(&dev->empress_users))
484 ts_init_encoder(dev);
488 static void empress_signal_change(struct saa7134_dev *dev)
490 schedule_work(&dev->empress_workqueue);
494 static int empress_init(struct saa7134_dev *dev)
498 dprintk("%s: %s\n",dev->name,__func__);
499 dev->empress_dev = video_device_alloc();
500 if (NULL == dev->empress_dev)
502 *(dev->empress_dev) = saa7134_empress_template;
503 dev->empress_dev->parent = &dev->pci->dev;
504 dev->empress_dev->release = video_device_release;
505 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
506 "%s empress (%s)", dev->name,
507 saa7134_boards[dev->board].name);
509 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
511 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
512 empress_nr[dev->nr]);
514 printk(KERN_INFO "%s: can't register video device\n",
516 video_device_release(dev->empress_dev);
517 dev->empress_dev = NULL;
520 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
521 dev->name,dev->empress_dev->minor & 0x1f);
523 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
524 &dev->pci->dev, &dev->slock,
525 V4L2_BUF_TYPE_VIDEO_CAPTURE,
526 V4L2_FIELD_ALTERNATE,
527 sizeof(struct saa7134_buf),
530 empress_signal_update(&dev->empress_workqueue);
534 static int empress_fini(struct saa7134_dev *dev)
536 dprintk("%s: %s\n",dev->name,__func__);
538 if (NULL == dev->empress_dev)
540 flush_scheduled_work();
541 video_unregister_device(dev->empress_dev);
542 dev->empress_dev = NULL;
546 static struct saa7134_mpeg_ops empress_ops = {
547 .type = SAA7134_MPEG_EMPRESS,
548 .init = empress_init,
549 .fini = empress_fini,
550 .signal_change = empress_signal_change,
553 static int __init empress_register(void)
555 return saa7134_ts_register(&empress_ops);
558 static void __exit empress_unregister(void)
560 saa7134_ts_unregister(&empress_ops);
563 module_init(empress_register);
564 module_exit(empress_unregister);
566 /* ----------------------------------------------------------- */