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 u32 leading_null_bytes = 0;
69 /* If more cards start to need this, then this
70 should probably be added to the card definitions. */
72 case SAA7134_BOARD_BEHOLD_M6:
73 case SAA7134_BOARD_BEHOLD_M63:
74 case SAA7134_BOARD_BEHOLD_M6_EXTRA:
75 leading_null_bytes = 1;
78 ts_reset_encoder(dev);
79 saa7134_i2c_call_clients(dev, VIDIOC_INT_INIT, &leading_null_bytes);
80 dev->empress_started = 1;
84 /* ------------------------------------------------------------------ */
86 static int ts_open(struct inode *inode, struct file *file)
88 int minor = iminor(inode);
89 struct saa7134_dev *dev;
93 list_for_each_entry(dev, &saa7134_devlist, devlist)
94 if (dev->empress_dev && dev->empress_dev->minor == minor)
100 dprintk("open minor=%d\n",minor);
102 if (!mutex_trylock(&dev->empress_tsq.vb_lock))
104 if (atomic_read(&dev->empress_users))
108 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
109 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
111 atomic_inc(&dev->empress_users);
112 file->private_data = dev;
116 mutex_unlock(&dev->empress_tsq.vb_lock);
122 static int ts_release(struct inode *inode, struct file *file)
124 struct saa7134_dev *dev = file->private_data;
126 videobuf_stop(&dev->empress_tsq);
127 videobuf_mmap_free(&dev->empress_tsq);
129 /* stop the encoder */
130 ts_reset_encoder(dev);
133 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
134 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
136 atomic_dec(&dev->empress_users);
142 ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
144 struct saa7134_dev *dev = file->private_data;
146 if (!dev->empress_started)
147 ts_init_encoder(dev);
149 return videobuf_read_stream(&dev->empress_tsq,
150 data, count, ppos, 0,
151 file->f_flags & O_NONBLOCK);
155 ts_poll(struct file *file, struct poll_table_struct *wait)
157 struct saa7134_dev *dev = file->private_data;
159 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
164 ts_mmap(struct file *file, struct vm_area_struct * vma)
166 struct saa7134_dev *dev = file->private_data;
168 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
172 * This function is _not_ called directly, but from
173 * video_generic_ioctl (and maybe others). userspace
174 * copying is done already, arg is a kernel pointer.
177 static int empress_querycap(struct file *file, void *priv,
178 struct v4l2_capability *cap)
180 struct saa7134_dev *dev = file->private_data;
182 strcpy(cap->driver, "saa7134");
183 strlcpy(cap->card, saa7134_boards[dev->board].name,
185 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
186 cap->version = SAA7134_VERSION_CODE;
188 V4L2_CAP_VIDEO_CAPTURE |
194 static int empress_enum_input(struct file *file, void *priv,
195 struct v4l2_input *i)
200 i->type = V4L2_INPUT_TYPE_CAMERA;
201 strcpy(i->name, "CCIR656");
206 static int empress_g_input(struct file *file, void *priv, unsigned int *i)
212 static int empress_s_input(struct file *file, void *priv, unsigned int i)
220 static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
221 struct v4l2_fmtdesc *f)
226 strlcpy(f->description, "MPEG TS", sizeof(f->description));
227 f->pixelformat = V4L2_PIX_FMT_MPEG;
232 static int empress_g_fmt_vid_cap(struct file *file, void *priv,
233 struct v4l2_format *f)
235 struct saa7134_dev *dev = file->private_data;
237 saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
239 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
240 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
245 static int empress_s_fmt_vid_cap(struct file *file, void *priv,
246 struct v4l2_format *f)
248 struct saa7134_dev *dev = file->private_data;
250 saa7134_i2c_call_clients(dev, VIDIOC_S_FMT, f);
252 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
253 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
259 static int empress_reqbufs(struct file *file, void *priv,
260 struct v4l2_requestbuffers *p)
262 struct saa7134_dev *dev = file->private_data;
264 return videobuf_reqbufs(&dev->empress_tsq, p);
267 static int empress_querybuf(struct file *file, void *priv,
268 struct v4l2_buffer *b)
270 struct saa7134_dev *dev = file->private_data;
272 return videobuf_querybuf(&dev->empress_tsq, b);
275 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
277 struct saa7134_dev *dev = file->private_data;
279 return videobuf_qbuf(&dev->empress_tsq, b);
282 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
284 struct saa7134_dev *dev = file->private_data;
286 return videobuf_dqbuf(&dev->empress_tsq, b,
287 file->f_flags & O_NONBLOCK);
290 static int empress_streamon(struct file *file, void *priv,
291 enum v4l2_buf_type type)
293 struct saa7134_dev *dev = file->private_data;
295 return videobuf_streamon(&dev->empress_tsq);
298 static int empress_streamoff(struct file *file, void *priv,
299 enum v4l2_buf_type type)
301 struct saa7134_dev *dev = file->private_data;
303 return videobuf_streamoff(&dev->empress_tsq);
306 static int saa7134_i2c_call_saa6752(struct saa7134_dev *dev,
307 unsigned int cmd, void *arg)
309 if (dev->mpeg_i2c_client == NULL)
311 return dev->mpeg_i2c_client->driver->command(dev->mpeg_i2c_client,
315 static int empress_s_ext_ctrls(struct file *file, void *priv,
316 struct v4l2_ext_controls *ctrls)
318 struct saa7134_dev *dev = file->private_data;
321 /* count == 0 is abused in saa6752hs.c, so that special
322 case is handled here explicitly. */
323 if (ctrls->count == 0)
326 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
329 err = saa7134_i2c_call_saa6752(dev, VIDIOC_S_EXT_CTRLS, ctrls);
330 ts_init_encoder(dev);
335 static int empress_g_ext_ctrls(struct file *file, void *priv,
336 struct v4l2_ext_controls *ctrls)
338 struct saa7134_dev *dev = file->private_data;
340 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
342 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls);
345 static int empress_g_ctrl(struct file *file, void *priv,
346 struct v4l2_control *c)
348 struct saa7134_dev *dev = file->private_data;
350 return saa7134_g_ctrl_internal(dev, NULL, c);
353 static int empress_s_ctrl(struct file *file, void *priv,
354 struct v4l2_control *c)
356 struct saa7134_dev *dev = file->private_data;
358 return saa7134_s_ctrl_internal(dev, NULL, c);
361 static int empress_queryctrl(struct file *file, void *priv,
362 struct v4l2_queryctrl *c)
364 static const u32 user_ctrls[] = {
370 V4L2_CID_AUDIO_VOLUME,
376 static const u32 mpeg_ctrls[] = {
378 V4L2_CID_MPEG_STREAM_TYPE,
379 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
380 V4L2_CID_MPEG_AUDIO_ENCODING,
381 V4L2_CID_MPEG_AUDIO_L2_BITRATE,
382 V4L2_CID_MPEG_VIDEO_ENCODING,
383 V4L2_CID_MPEG_VIDEO_ASPECT,
384 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
385 V4L2_CID_MPEG_VIDEO_BITRATE,
386 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
389 static const u32 *ctrl_classes[] = {
394 struct saa7134_dev *dev = file->private_data;
396 c->id = v4l2_ctrl_next(ctrl_classes, c->id);
399 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
400 return v4l2_ctrl_query_fill_std(c);
401 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
402 return saa7134_queryctrl(file, priv, c);
403 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYCTRL, c);
406 static int empress_querymenu(struct file *file, void *priv,
407 struct v4l2_querymenu *c)
409 struct saa7134_dev *dev = file->private_data;
411 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
413 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c);
416 static int empress_g_chip_ident(struct file *file, void *fh,
417 struct v4l2_chip_ident *chip)
419 struct saa7134_dev *dev = file->private_data;
421 chip->ident = V4L2_IDENT_NONE;
423 if (dev->mpeg_i2c_client == NULL)
425 if (chip->match_type == V4L2_CHIP_MATCH_I2C_DRIVER &&
426 chip->match_chip == I2C_DRIVERID_SAA6752HS)
427 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
428 if (chip->match_type == V4L2_CHIP_MATCH_I2C_ADDR &&
429 chip->match_chip == dev->mpeg_i2c_client->addr)
430 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_CHIP_IDENT, chip);
435 static const struct file_operations ts_fops =
437 .owner = THIS_MODULE,
439 .release = ts_release,
443 .ioctl = video_ioctl2,
447 static const struct v4l2_ioctl_ops ts_ioctl_ops = {
448 .vidioc_querycap = empress_querycap,
449 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
450 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
451 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
452 .vidioc_reqbufs = empress_reqbufs,
453 .vidioc_querybuf = empress_querybuf,
454 .vidioc_qbuf = empress_qbuf,
455 .vidioc_dqbuf = empress_dqbuf,
456 .vidioc_streamon = empress_streamon,
457 .vidioc_streamoff = empress_streamoff,
458 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
459 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
460 .vidioc_enum_input = empress_enum_input,
461 .vidioc_g_input = empress_g_input,
462 .vidioc_s_input = empress_s_input,
463 .vidioc_queryctrl = empress_queryctrl,
464 .vidioc_querymenu = empress_querymenu,
465 .vidioc_g_ctrl = empress_g_ctrl,
466 .vidioc_s_ctrl = empress_s_ctrl,
467 .vidioc_g_chip_ident = empress_g_chip_ident,
470 /* ----------------------------------------------------------- */
472 static struct video_device saa7134_empress_template = {
473 .name = "saa7134-empress",
476 .ioctl_ops = &ts_ioctl_ops,
478 .tvnorms = SAA7134_NORMS,
479 .current_norm = V4L2_STD_PAL,
482 static void empress_signal_update(struct work_struct *work)
484 struct saa7134_dev* dev =
485 container_of(work, struct saa7134_dev, empress_workqueue);
488 dprintk("no video signal\n");
489 ts_reset_encoder(dev);
491 dprintk("video signal acquired\n");
492 if (atomic_read(&dev->empress_users))
493 ts_init_encoder(dev);
497 static void empress_signal_change(struct saa7134_dev *dev)
499 schedule_work(&dev->empress_workqueue);
503 static int empress_init(struct saa7134_dev *dev)
507 dprintk("%s: %s\n",dev->name,__func__);
508 dev->empress_dev = video_device_alloc();
509 if (NULL == dev->empress_dev)
511 *(dev->empress_dev) = saa7134_empress_template;
512 dev->empress_dev->parent = &dev->pci->dev;
513 dev->empress_dev->release = video_device_release;
514 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
515 "%s empress (%s)", dev->name,
516 saa7134_boards[dev->board].name);
518 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
520 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
521 empress_nr[dev->nr]);
523 printk(KERN_INFO "%s: can't register video device\n",
525 video_device_release(dev->empress_dev);
526 dev->empress_dev = NULL;
529 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
530 dev->name,dev->empress_dev->minor & 0x1f);
532 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
533 &dev->pci->dev, &dev->slock,
534 V4L2_BUF_TYPE_VIDEO_CAPTURE,
535 V4L2_FIELD_ALTERNATE,
536 sizeof(struct saa7134_buf),
539 empress_signal_update(&dev->empress_workqueue);
543 static int empress_fini(struct saa7134_dev *dev)
545 dprintk("%s: %s\n",dev->name,__func__);
547 if (NULL == dev->empress_dev)
549 flush_scheduled_work();
550 video_unregister_device(dev->empress_dev);
551 dev->empress_dev = NULL;
555 static struct saa7134_mpeg_ops empress_ops = {
556 .type = SAA7134_MPEG_EMPRESS,
557 .init = empress_init,
558 .fini = empress_fini,
559 .signal_change = empress_signal_change,
562 static int __init empress_register(void)
564 return saa7134_ts_register(&empress_ops);
567 static void __exit empress_unregister(void)
569 saa7134_ts_unregister(&empress_ops);
572 module_init(empress_register);
573 module_exit(empress_unregister);
575 /* ----------------------------------------------------------- */