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/moduleparam.h>
24 #include <linux/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
28 #include "saa7134-reg.h"
31 #include <media/saa6752hs.h>
32 #include <media/v4l2-common.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
= 0;
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 ts_reset_encoder(dev
);
68 saa7134_i2c_call_clients(dev
, VIDIOC_S_MPEGCOMP
, NULL
);
69 dev
->empress_started
= 1;
73 /* ------------------------------------------------------------------ */
75 static int ts_open(struct inode
*inode
, struct file
*file
)
77 int minor
= iminor(inode
);
78 struct saa7134_dev
*h
,*dev
= NULL
;
79 struct list_head
*list
;
82 list_for_each(list
,&saa7134_devlist
) {
83 h
= list_entry(list
, struct saa7134_dev
, devlist
);
84 if (h
->empress_dev
&& h
->empress_dev
->minor
== minor
)
90 dprintk("open minor=%d\n",minor
);
92 if (down_trylock(&dev
->empress_tsq
.lock
))
94 if (dev
->empress_users
)
98 file
->private_data
= dev
;
102 up(&dev
->empress_tsq
.lock
);
107 static int ts_release(struct inode
*inode
, struct file
*file
)
109 struct saa7134_dev
*dev
= file
->private_data
;
111 if (dev
->empress_tsq
.streaming
)
112 videobuf_streamoff(&dev
->empress_tsq
);
113 down(&dev
->empress_tsq
.lock
);
114 if (dev
->empress_tsq
.reading
)
115 videobuf_read_stop(&dev
->empress_tsq
);
116 videobuf_mmap_free(&dev
->empress_tsq
);
117 dev
->empress_users
--;
119 /* stop the encoder */
120 ts_reset_encoder(dev
);
122 up(&dev
->empress_tsq
.lock
);
127 ts_read(struct file
*file
, char __user
*data
, size_t count
, loff_t
*ppos
)
129 struct saa7134_dev
*dev
= file
->private_data
;
131 if (!dev
->empress_started
)
132 ts_init_encoder(dev
);
134 return videobuf_read_stream(&dev
->empress_tsq
,
135 data
, count
, ppos
, 0,
136 file
->f_flags
& O_NONBLOCK
);
140 ts_poll(struct file
*file
, struct poll_table_struct
*wait
)
142 struct saa7134_dev
*dev
= file
->private_data
;
144 return videobuf_poll_stream(file
, &dev
->empress_tsq
, wait
);
149 ts_mmap(struct file
*file
, struct vm_area_struct
* vma
)
151 struct saa7134_dev
*dev
= file
->private_data
;
153 return videobuf_mmap_mapper(&dev
->empress_tsq
, vma
);
157 * This function is _not_ called directly, but from
158 * video_generic_ioctl (and maybe others). userspace
159 * copying is done already, arg is a kernel pointer.
161 static int ts_do_ioctl(struct inode
*inode
, struct file
*file
,
162 unsigned int cmd
, void *arg
)
164 struct saa7134_dev
*dev
= file
->private_data
;
167 v4l_print_ioctl(dev
->name
,cmd
);
169 case VIDIOC_QUERYCAP
:
171 struct v4l2_capability
*cap
= arg
;
173 memset(cap
,0,sizeof(*cap
));
174 strcpy(cap
->driver
, "saa7134");
175 strlcpy(cap
->card
, saa7134_boards
[dev
->board
].name
,
177 sprintf(cap
->bus_info
,"PCI:%s",pci_name(dev
->pci
));
178 cap
->version
= SAA7134_VERSION_CODE
;
180 V4L2_CAP_VIDEO_CAPTURE
|
186 /* --- input switching --------------------------------------- */
187 case VIDIOC_ENUMINPUT
:
189 struct v4l2_input
*i
= arg
;
193 i
->type
= V4L2_INPUT_TYPE_CAMERA
;
194 strcpy(i
->name
,"CCIR656");
211 /* --- capture ioctls ---------------------------------------- */
213 case VIDIOC_ENUM_FMT
:
215 struct v4l2_fmtdesc
*f
= arg
;
222 memset(f
,0,sizeof(*f
));
224 strlcpy(f
->description
, "MPEG TS", sizeof(f
->description
));
225 f
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
226 f
->pixelformat
= V4L2_PIX_FMT_MPEG
;
232 struct v4l2_format
*f
= arg
;
234 memset(f
,0,sizeof(*f
));
235 f
->type
= V4L2_BUF_TYPE_VIDEO_CAPTURE
;
237 saa7134_i2c_call_clients(dev
, cmd
, arg
);
238 f
->fmt
.pix
.pixelformat
= V4L2_PIX_FMT_MPEG
;
239 f
->fmt
.pix
.sizeimage
= TS_PACKET_SIZE
* dev
->ts
.nr_packets
;
245 struct v4l2_format
*f
= arg
;
247 if (f
->type
!= V4L2_BUF_TYPE_VIDEO_CAPTURE
)
250 saa7134_i2c_call_clients(dev
, cmd
, arg
);
251 f
->fmt
.pix
.pixelformat
= V4L2_PIX_FMT_MPEG
;
252 f
->fmt
.pix
.sizeimage
= TS_PACKET_SIZE
* dev
->ts
.nr_packets
;
257 return videobuf_reqbufs(&dev
->empress_tsq
,arg
);
259 case VIDIOC_QUERYBUF
:
260 return videobuf_querybuf(&dev
->empress_tsq
,arg
);
263 return videobuf_qbuf(&dev
->empress_tsq
,arg
);
266 return videobuf_dqbuf(&dev
->empress_tsq
,arg
,
267 file
->f_flags
& O_NONBLOCK
);
269 case VIDIOC_STREAMON
:
270 return videobuf_streamon(&dev
->empress_tsq
);
272 case VIDIOC_STREAMOFF
:
273 return videobuf_streamoff(&dev
->empress_tsq
);
275 case VIDIOC_QUERYCTRL
:
278 return saa7134_common_ioctl(dev
, cmd
, arg
);
280 case VIDIOC_S_MPEGCOMP
:
281 saa7134_i2c_call_clients(dev
, VIDIOC_S_MPEGCOMP
, arg
);
282 ts_init_encoder(dev
);
284 case VIDIOC_G_MPEGCOMP
:
285 saa7134_i2c_call_clients(dev
, VIDIOC_G_MPEGCOMP
, arg
);
294 static int ts_ioctl(struct inode
*inode
, struct file
*file
,
295 unsigned int cmd
, unsigned long arg
)
297 return video_usercopy(inode
, file
, cmd
, arg
, ts_do_ioctl
);
300 static struct file_operations ts_fops
=
302 .owner
= THIS_MODULE
,
304 .release
= ts_release
,
312 /* ----------------------------------------------------------- */
314 static struct video_device saa7134_empress_template
=
316 .name
= "saa7134-empress",
317 .type
= 0 /* FIXME */,
318 .type2
= 0 /* FIXME */,
324 static void empress_signal_update(void* data
)
326 struct saa7134_dev
* dev
= (struct saa7134_dev
*) data
;
329 dprintk("no video signal\n");
330 ts_reset_encoder(dev
);
332 dprintk("video signal acquired\n");
333 if (dev
->empress_users
)
334 ts_init_encoder(dev
);
338 static void empress_signal_change(struct saa7134_dev
*dev
)
340 schedule_work(&dev
->empress_workqueue
);
344 static int empress_init(struct saa7134_dev
*dev
)
348 dprintk("%s: %s\n",dev
->name
,__FUNCTION__
);
349 dev
->empress_dev
= video_device_alloc();
350 if (NULL
== dev
->empress_dev
)
352 *(dev
->empress_dev
) = saa7134_empress_template
;
353 dev
->empress_dev
->dev
= &dev
->pci
->dev
;
354 dev
->empress_dev
->release
= video_device_release
;
355 snprintf(dev
->empress_dev
->name
, sizeof(dev
->empress_dev
->name
),
356 "%s empress (%s)", dev
->name
,
357 saa7134_boards
[dev
->board
].name
);
359 INIT_WORK(&dev
->empress_workqueue
, empress_signal_update
, (void*) dev
);
361 err
= video_register_device(dev
->empress_dev
,VFL_TYPE_GRABBER
,
362 empress_nr
[dev
->nr
]);
364 printk(KERN_INFO
"%s: can't register video device\n",
366 video_device_release(dev
->empress_dev
);
367 dev
->empress_dev
= NULL
;
370 printk(KERN_INFO
"%s: registered device video%d [mpeg]\n",
371 dev
->name
,dev
->empress_dev
->minor
& 0x1f);
373 videobuf_queue_init(&dev
->empress_tsq
, &saa7134_ts_qops
,
374 dev
->pci
, &dev
->slock
,
375 V4L2_BUF_TYPE_VIDEO_CAPTURE
,
376 V4L2_FIELD_ALTERNATE
,
377 sizeof(struct saa7134_buf
),
380 empress_signal_update(dev
);
384 static int empress_fini(struct saa7134_dev
*dev
)
386 dprintk("%s: %s\n",dev
->name
,__FUNCTION__
);
388 if (NULL
== dev
->empress_dev
)
390 flush_scheduled_work();
391 video_unregister_device(dev
->empress_dev
);
392 dev
->empress_dev
= NULL
;
396 static struct saa7134_mpeg_ops empress_ops
= {
397 .type
= SAA7134_MPEG_EMPRESS
,
398 .init
= empress_init
,
399 .fini
= empress_fini
,
400 .signal_change
= empress_signal_change
,
403 static int __init
empress_register(void)
405 return saa7134_ts_register(&empress_ops
);
408 static void __exit
empress_unregister(void)
410 saa7134_ts_unregister(&empress_ops
);
413 module_init(empress_register
);
414 module_exit(empress_unregister
);
416 /* ----------------------------------------------------------- */