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 saa_call_all(dev
, core
, init
, leading_null_bytes
);
80 dev
->empress_started
= 1;
84 /* ------------------------------------------------------------------ */
86 static int ts_open(struct file
*file
)
88 int minor
= video_devdata(file
)->minor
;
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 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 saa_call_all(dev
, video
, 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 saa_call_all(dev
, video
, 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 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
= saa_call_empress(dev
, core
, 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 saa_call_empress(dev
, core
, 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 /* Must be sorted from low to high control ID! */
356 static const u32 user_ctrls
[] = {
362 V4L2_CID_AUDIO_VOLUME
,
368 /* Must be sorted from low to high control ID! */
369 static const u32 mpeg_ctrls
[] = {
371 V4L2_CID_MPEG_STREAM_TYPE
,
372 V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ
,
373 V4L2_CID_MPEG_AUDIO_ENCODING
,
374 V4L2_CID_MPEG_AUDIO_L2_BITRATE
,
375 V4L2_CID_MPEG_VIDEO_ENCODING
,
376 V4L2_CID_MPEG_VIDEO_ASPECT
,
377 V4L2_CID_MPEG_VIDEO_BITRATE_MODE
,
378 V4L2_CID_MPEG_VIDEO_BITRATE
,
379 V4L2_CID_MPEG_VIDEO_BITRATE_PEAK
,
382 static const u32
*ctrl_classes
[] = {
387 struct saa7134_dev
*dev
= file
->private_data
;
389 c
->id
= v4l2_ctrl_next(ctrl_classes
, c
->id
);
392 if (c
->id
== V4L2_CID_USER_CLASS
|| c
->id
== V4L2_CID_MPEG_CLASS
)
393 return v4l2_ctrl_query_fill(c
, 0, 0, 0, 0);
394 if (V4L2_CTRL_ID2CLASS(c
->id
) != V4L2_CTRL_CLASS_MPEG
)
395 return saa7134_queryctrl(file
, priv
, c
);
396 return saa_call_empress(dev
, core
, queryctrl
, c
);
399 static int empress_querymenu(struct file
*file
, void *priv
,
400 struct v4l2_querymenu
*c
)
402 struct saa7134_dev
*dev
= file
->private_data
;
404 if (V4L2_CTRL_ID2CLASS(c
->id
) != V4L2_CTRL_CLASS_MPEG
)
406 return saa_call_empress(dev
, core
, querymenu
, c
);
409 static int empress_g_chip_ident(struct file
*file
, void *fh
,
410 struct v4l2_dbg_chip_ident
*chip
)
412 struct saa7134_dev
*dev
= file
->private_data
;
414 chip
->ident
= V4L2_IDENT_NONE
;
416 if (chip
->match
.type
== V4L2_CHIP_MATCH_I2C_DRIVER
&&
417 !strcmp(chip
->match
.name
, "saa6752hs"))
418 return saa_call_empress(dev
, core
, g_chip_ident
, chip
);
419 if (chip
->match
.type
== V4L2_CHIP_MATCH_I2C_ADDR
)
420 return saa_call_empress(dev
, core
, g_chip_ident
, chip
);
424 static int empress_s_std(struct file
*file
, void *priv
, v4l2_std_id
*id
)
426 struct saa7134_dev
*dev
= file
->private_data
;
428 return saa7134_s_std_internal(dev
, NULL
, id
);
431 static int empress_g_std(struct file
*file
, void *priv
, v4l2_std_id
*id
)
433 struct saa7134_dev
*dev
= file
->private_data
;
435 *id
= dev
->tvnorm
->id
;
439 static const struct v4l2_file_operations ts_fops
=
441 .owner
= THIS_MODULE
,
443 .release
= ts_release
,
447 .ioctl
= video_ioctl2
,
450 static const struct v4l2_ioctl_ops ts_ioctl_ops
= {
451 .vidioc_querycap
= empress_querycap
,
452 .vidioc_enum_fmt_vid_cap
= empress_enum_fmt_vid_cap
,
453 .vidioc_s_fmt_vid_cap
= empress_s_fmt_vid_cap
,
454 .vidioc_g_fmt_vid_cap
= empress_g_fmt_vid_cap
,
455 .vidioc_reqbufs
= empress_reqbufs
,
456 .vidioc_querybuf
= empress_querybuf
,
457 .vidioc_qbuf
= empress_qbuf
,
458 .vidioc_dqbuf
= empress_dqbuf
,
459 .vidioc_streamon
= empress_streamon
,
460 .vidioc_streamoff
= empress_streamoff
,
461 .vidioc_s_ext_ctrls
= empress_s_ext_ctrls
,
462 .vidioc_g_ext_ctrls
= empress_g_ext_ctrls
,
463 .vidioc_enum_input
= empress_enum_input
,
464 .vidioc_g_input
= empress_g_input
,
465 .vidioc_s_input
= empress_s_input
,
466 .vidioc_queryctrl
= empress_queryctrl
,
467 .vidioc_querymenu
= empress_querymenu
,
468 .vidioc_g_ctrl
= empress_g_ctrl
,
469 .vidioc_s_ctrl
= empress_s_ctrl
,
470 .vidioc_g_chip_ident
= empress_g_chip_ident
,
471 .vidioc_s_std
= empress_s_std
,
472 .vidioc_g_std
= empress_g_std
,
475 /* ----------------------------------------------------------- */
477 static struct video_device saa7134_empress_template
= {
478 .name
= "saa7134-empress",
481 .ioctl_ops
= &ts_ioctl_ops
,
483 .tvnorms
= SAA7134_NORMS
,
484 .current_norm
= V4L2_STD_PAL
,
487 static void empress_signal_update(struct work_struct
*work
)
489 struct saa7134_dev
* dev
=
490 container_of(work
, struct saa7134_dev
, empress_workqueue
);
493 dprintk("no video signal\n");
494 ts_reset_encoder(dev
);
496 dprintk("video signal acquired\n");
497 if (atomic_read(&dev
->empress_users
))
498 ts_init_encoder(dev
);
502 static void empress_signal_change(struct saa7134_dev
*dev
)
504 schedule_work(&dev
->empress_workqueue
);
508 static int empress_init(struct saa7134_dev
*dev
)
512 dprintk("%s: %s\n",dev
->name
,__func__
);
513 dev
->empress_dev
= video_device_alloc();
514 if (NULL
== dev
->empress_dev
)
516 *(dev
->empress_dev
) = saa7134_empress_template
;
517 dev
->empress_dev
->parent
= &dev
->pci
->dev
;
518 dev
->empress_dev
->release
= video_device_release
;
519 snprintf(dev
->empress_dev
->name
, sizeof(dev
->empress_dev
->name
),
520 "%s empress (%s)", dev
->name
,
521 saa7134_boards
[dev
->board
].name
);
523 INIT_WORK(&dev
->empress_workqueue
, empress_signal_update
);
525 err
= video_register_device(dev
->empress_dev
,VFL_TYPE_GRABBER
,
526 empress_nr
[dev
->nr
]);
528 printk(KERN_INFO
"%s: can't register video device\n",
530 video_device_release(dev
->empress_dev
);
531 dev
->empress_dev
= NULL
;
534 printk(KERN_INFO
"%s: registered device video%d [mpeg]\n",
535 dev
->name
, dev
->empress_dev
->num
);
537 videobuf_queue_sg_init(&dev
->empress_tsq
, &saa7134_ts_qops
,
538 &dev
->pci
->dev
, &dev
->slock
,
539 V4L2_BUF_TYPE_VIDEO_CAPTURE
,
540 V4L2_FIELD_ALTERNATE
,
541 sizeof(struct saa7134_buf
),
544 empress_signal_update(&dev
->empress_workqueue
);
548 static int empress_fini(struct saa7134_dev
*dev
)
550 dprintk("%s: %s\n",dev
->name
,__func__
);
552 if (NULL
== dev
->empress_dev
)
554 flush_scheduled_work();
555 video_unregister_device(dev
->empress_dev
);
556 dev
->empress_dev
= NULL
;
560 static struct saa7134_mpeg_ops empress_ops
= {
561 .type
= SAA7134_MPEG_EMPRESS
,
562 .init
= empress_init
,
563 .fini
= empress_fini
,
564 .signal_change
= empress_signal_change
,
567 static int __init
empress_register(void)
569 return saa7134_ts_register(&empress_ops
);
572 static void __exit
empress_unregister(void)
574 saa7134_ts_unregister(&empress_ops
);
577 module_init(empress_register
);
578 module_exit(empress_unregister
);
580 /* ----------------------------------------------------------- */