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>
33 /* ------------------------------------------------------------------ */
35 MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
36 MODULE_LICENSE("GPL");
38 static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };
40 module_param_array(empress_nr, int, NULL, 0444);
41 MODULE_PARM_DESC(empress_nr,"ts device number");
43 static unsigned int debug;
44 module_param(debug, int, 0644);
45 MODULE_PARM_DESC(debug,"enable debug messages");
47 #define dprintk(fmt, arg...) if (debug) \
48 printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg)
50 /* ------------------------------------------------------------------ */
52 static void ts_reset_encoder(struct saa7134_dev* dev)
54 if (!dev->empress_started)
57 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);
59 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);
61 dev->empress_started = 0;
64 static int ts_init_encoder(struct saa7134_dev* dev)
66 struct v4l2_ext_controls ctrls = { V4L2_CTRL_CLASS_MPEG, 0 };
68 ts_reset_encoder(dev);
69 saa7134_i2c_call_clients(dev, VIDIOC_S_EXT_CTRLS, &ctrls);
70 dev->empress_started = 1;
74 /* ------------------------------------------------------------------ */
76 static int ts_open(struct inode *inode, struct file *file)
78 int minor = iminor(inode);
79 struct saa7134_dev *dev;
82 list_for_each_entry(dev, &saa7134_devlist, devlist)
83 if (dev->empress_dev && dev->empress_dev->minor == minor)
88 dprintk("open minor=%d\n",minor);
90 if (!mutex_trylock(&dev->empress_tsq.vb_lock))
92 if (atomic_read(&dev->empress_users))
96 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
97 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));
99 atomic_inc(&dev->empress_users);
100 file->private_data = dev;
104 mutex_unlock(&dev->empress_tsq.vb_lock);
109 static int ts_release(struct inode *inode, struct file *file)
111 struct saa7134_dev *dev = file->private_data;
113 videobuf_stop(&dev->empress_tsq);
114 videobuf_mmap_free(&dev->empress_tsq);
116 /* stop the encoder */
117 ts_reset_encoder(dev);
120 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,
121 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));
123 atomic_dec(&dev->empress_users);
129 ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
131 struct saa7134_dev *dev = file->private_data;
133 if (!dev->empress_started)
134 ts_init_encoder(dev);
136 return videobuf_read_stream(&dev->empress_tsq,
137 data, count, ppos, 0,
138 file->f_flags & O_NONBLOCK);
142 ts_poll(struct file *file, struct poll_table_struct *wait)
144 struct saa7134_dev *dev = file->private_data;
146 return videobuf_poll_stream(file, &dev->empress_tsq, wait);
151 ts_mmap(struct file *file, struct vm_area_struct * vma)
153 struct saa7134_dev *dev = file->private_data;
155 return videobuf_mmap_mapper(&dev->empress_tsq, vma);
159 * This function is _not_ called directly, but from
160 * video_generic_ioctl (and maybe others). userspace
161 * copying is done already, arg is a kernel pointer.
164 static int empress_querycap(struct file *file, void *priv,
165 struct v4l2_capability *cap)
167 struct saa7134_dev *dev = file->private_data;
169 strcpy(cap->driver, "saa7134");
170 strlcpy(cap->card, saa7134_boards[dev->board].name,
172 sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
173 cap->version = SAA7134_VERSION_CODE;
175 V4L2_CAP_VIDEO_CAPTURE |
181 static int empress_enum_input(struct file *file, void *priv,
182 struct v4l2_input *i)
187 i->type = V4L2_INPUT_TYPE_CAMERA;
188 strcpy(i->name, "CCIR656");
193 static int empress_g_input(struct file *file, void *priv, unsigned int *i)
199 static int empress_s_input(struct file *file, void *priv, unsigned int i)
207 static int empress_enum_fmt_vid_cap(struct file *file, void *priv,
208 struct v4l2_fmtdesc *f)
213 strlcpy(f->description, "MPEG TS", sizeof(f->description));
214 f->pixelformat = V4L2_PIX_FMT_MPEG;
219 static int empress_g_fmt_vid_cap(struct file *file, void *priv,
220 struct v4l2_format *f)
222 struct saa7134_dev *dev = file->private_data;
224 saa7134_i2c_call_clients(dev, VIDIOC_G_FMT, f);
226 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
227 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
232 static int empress_s_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_S_FMT, f);
239 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
240 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;
246 static int empress_reqbufs(struct file *file, void *priv,
247 struct v4l2_requestbuffers *p)
249 struct saa7134_dev *dev = file->private_data;
251 return videobuf_reqbufs(&dev->empress_tsq, p);
254 static int empress_querybuf(struct file *file, void *priv,
255 struct v4l2_buffer *b)
257 struct saa7134_dev *dev = file->private_data;
259 return videobuf_querybuf(&dev->empress_tsq, b);
262 static int empress_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
264 struct saa7134_dev *dev = file->private_data;
266 return videobuf_qbuf(&dev->empress_tsq, b);
269 static int empress_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
271 struct saa7134_dev *dev = file->private_data;
273 return videobuf_dqbuf(&dev->empress_tsq, b,
274 file->f_flags & O_NONBLOCK);
277 static int empress_streamon(struct file *file, void *priv,
278 enum v4l2_buf_type type)
280 struct saa7134_dev *dev = file->private_data;
282 return videobuf_streamon(&dev->empress_tsq);
285 static int empress_streamoff(struct file *file, void *priv,
286 enum v4l2_buf_type type)
288 struct saa7134_dev *dev = file->private_data;
290 return videobuf_streamoff(&dev->empress_tsq);
293 static int saa7134_i2c_call_saa6752(struct saa7134_dev *dev,
294 unsigned int cmd, void *arg)
296 if (dev->mpeg_i2c_client == NULL)
298 return dev->mpeg_i2c_client->driver->command(dev->mpeg_i2c_client,
302 static int empress_s_ext_ctrls(struct file *file, void *priv,
303 struct v4l2_ext_controls *ctrls)
305 struct saa7134_dev *dev = file->private_data;
308 /* count == 0 is abused in saa6752hs.c, so that special
309 case is handled here explicitly. */
310 if (ctrls->count == 0)
313 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
316 err = saa7134_i2c_call_saa6752(dev, VIDIOC_S_EXT_CTRLS, ctrls);
317 ts_init_encoder(dev);
322 static int empress_g_ext_ctrls(struct file *file, void *priv,
323 struct v4l2_ext_controls *ctrls)
325 struct saa7134_dev *dev = file->private_data;
327 if (ctrls->ctrl_class != V4L2_CTRL_CLASS_MPEG)
329 return saa7134_i2c_call_saa6752(dev, VIDIOC_G_EXT_CTRLS, ctrls);
332 static int empress_g_ctrl(struct file *file, void *priv,
333 struct v4l2_control *c)
335 struct saa7134_dev *dev = file->private_data;
337 return saa7134_g_ctrl_internal(dev, NULL, c);
340 static int empress_s_ctrl(struct file *file, void *priv,
341 struct v4l2_control *c)
343 struct saa7134_dev *dev = file->private_data;
345 return saa7134_s_ctrl_internal(dev, NULL, c);
348 static int empress_queryctrl(struct file *file, void *priv,
349 struct v4l2_queryctrl *c)
351 static const u32 user_ctrls[] = {
357 V4L2_CID_AUDIO_VOLUME,
363 static const u32 mpeg_ctrls[] = {
365 V4L2_CID_MPEG_STREAM_TYPE,
366 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ,
367 V4L2_CID_MPEG_AUDIO_ENCODING,
368 V4L2_CID_MPEG_AUDIO_L2_BITRATE,
369 V4L2_CID_MPEG_VIDEO_ENCODING,
370 V4L2_CID_MPEG_VIDEO_ASPECT,
371 V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
372 V4L2_CID_MPEG_VIDEO_BITRATE,
373 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
376 static const u32 *ctrl_classes[] = {
381 struct saa7134_dev *dev = file->private_data;
383 c->id = v4l2_ctrl_next(ctrl_classes, c->id);
386 if (c->id == V4L2_CID_USER_CLASS || c->id == V4L2_CID_MPEG_CLASS)
387 return v4l2_ctrl_query_fill_std(c);
388 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
389 return saa7134_queryctrl(file, priv, c);
390 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYCTRL, c);
393 static int empress_querymenu(struct file *file, void *priv,
394 struct v4l2_querymenu *c)
396 struct saa7134_dev *dev = file->private_data;
398 if (V4L2_CTRL_ID2CLASS(c->id) != V4L2_CTRL_CLASS_MPEG)
400 return saa7134_i2c_call_saa6752(dev, VIDIOC_QUERYMENU, c);
403 static const struct file_operations ts_fops =
405 .owner = THIS_MODULE,
407 .release = ts_release,
411 .ioctl = video_ioctl2,
415 static const struct v4l2_ioctl_ops ts_ioctl_ops = {
416 .vidioc_querycap = empress_querycap,
417 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,
418 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,
419 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,
420 .vidioc_reqbufs = empress_reqbufs,
421 .vidioc_querybuf = empress_querybuf,
422 .vidioc_qbuf = empress_qbuf,
423 .vidioc_dqbuf = empress_dqbuf,
424 .vidioc_streamon = empress_streamon,
425 .vidioc_streamoff = empress_streamoff,
426 .vidioc_s_ext_ctrls = empress_s_ext_ctrls,
427 .vidioc_g_ext_ctrls = empress_g_ext_ctrls,
428 .vidioc_enum_input = empress_enum_input,
429 .vidioc_g_input = empress_g_input,
430 .vidioc_s_input = empress_s_input,
432 .vidioc_queryctrl = empress_queryctrl,
433 .vidioc_querymenu = empress_querymenu,
434 .vidioc_g_ctrl = empress_g_ctrl,
435 .vidioc_s_ctrl = empress_s_ctrl,
438 /* ----------------------------------------------------------- */
440 static struct video_device saa7134_empress_template = {
441 .name = "saa7134-empress",
444 .ioctl_ops = &ts_ioctl_ops,
446 .tvnorms = SAA7134_NORMS,
447 .current_norm = V4L2_STD_PAL,
450 static void empress_signal_update(struct work_struct *work)
452 struct saa7134_dev* dev =
453 container_of(work, struct saa7134_dev, empress_workqueue);
456 dprintk("no video signal\n");
457 ts_reset_encoder(dev);
459 dprintk("video signal acquired\n");
460 if (atomic_read(&dev->empress_users))
461 ts_init_encoder(dev);
465 static void empress_signal_change(struct saa7134_dev *dev)
467 schedule_work(&dev->empress_workqueue);
471 static int empress_init(struct saa7134_dev *dev)
475 dprintk("%s: %s\n",dev->name,__func__);
476 dev->empress_dev = video_device_alloc();
477 if (NULL == dev->empress_dev)
479 *(dev->empress_dev) = saa7134_empress_template;
480 dev->empress_dev->parent = &dev->pci->dev;
481 dev->empress_dev->release = video_device_release;
482 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),
483 "%s empress (%s)", dev->name,
484 saa7134_boards[dev->board].name);
486 INIT_WORK(&dev->empress_workqueue, empress_signal_update);
488 err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER,
489 empress_nr[dev->nr]);
491 printk(KERN_INFO "%s: can't register video device\n",
493 video_device_release(dev->empress_dev);
494 dev->empress_dev = NULL;
497 printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
498 dev->name,dev->empress_dev->minor & 0x1f);
500 videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
501 &dev->pci->dev, &dev->slock,
502 V4L2_BUF_TYPE_VIDEO_CAPTURE,
503 V4L2_FIELD_ALTERNATE,
504 sizeof(struct saa7134_buf),
507 empress_signal_update(&dev->empress_workqueue);
511 static int empress_fini(struct saa7134_dev *dev)
513 dprintk("%s: %s\n",dev->name,__func__);
515 if (NULL == dev->empress_dev)
517 flush_scheduled_work();
518 video_unregister_device(dev->empress_dev);
519 dev->empress_dev = NULL;
523 static struct saa7134_mpeg_ops empress_ops = {
524 .type = SAA7134_MPEG_EMPRESS,
525 .init = empress_init,
526 .fini = empress_fini,
527 .signal_change = empress_signal_change,
530 static int __init empress_register(void)
532 return saa7134_ts_register(&empress_ops);
535 static void __exit empress_unregister(void)
537 saa7134_ts_unregister(&empress_ops);
540 module_init(empress_register);
541 module_exit(empress_unregister);
543 /* ----------------------------------------------------------- */