Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * |
3 | * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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. | |
18 | */ | |
19 | ||
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> | |
27 | ||
28 | #include "saa7134-reg.h" | |
29 | #include "saa7134.h" | |
30 | ||
31 | #include <media/saa6752hs.h> | |
32 | ||
33 | /* ------------------------------------------------------------------ */ | |
34 | ||
35 | MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
38 | static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET }; | |
39 | module_param_array(empress_nr, int, NULL, 0444); | |
40 | MODULE_PARM_DESC(empress_nr,"ts device number"); | |
41 | ||
42 | static unsigned int debug = 0; | |
43 | module_param(debug, int, 0644); | |
44 | MODULE_PARM_DESC(debug,"enable debug messages"); | |
45 | ||
46 | #define dprintk(fmt, arg...) if (debug) \ | |
47 | printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg) | |
48 | ||
49 | /* ------------------------------------------------------------------ */ | |
50 | ||
51 | static void ts_reset_encoder(struct saa7134_dev* dev) | |
52 | { | |
53 | if (!dev->empress_started) | |
54 | return; | |
55 | ||
56 | saa_writeb(SAA7134_SPECIAL_MODE, 0x00); | |
57 | msleep(10); | |
4ac97914 | 58 | saa_writeb(SAA7134_SPECIAL_MODE, 0x01); |
1da177e4 LT |
59 | msleep(100); |
60 | dev->empress_started = 0; | |
61 | } | |
62 | ||
63 | static int ts_init_encoder(struct saa7134_dev* dev) | |
64 | { | |
65 | ts_reset_encoder(dev); | |
66 | saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL); | |
67 | dev->empress_started = 1; | |
4ac97914 | 68 | return 0; |
1da177e4 LT |
69 | } |
70 | ||
71 | /* ------------------------------------------------------------------ */ | |
72 | ||
73 | static int ts_open(struct inode *inode, struct file *file) | |
74 | { | |
75 | int minor = iminor(inode); | |
76 | struct saa7134_dev *h,*dev = NULL; | |
77 | struct list_head *list; | |
78 | int err; | |
79 | ||
80 | list_for_each(list,&saa7134_devlist) { | |
81 | h = list_entry(list, struct saa7134_dev, devlist); | |
82 | if (h->empress_dev && h->empress_dev->minor == minor) | |
83 | dev = h; | |
84 | } | |
85 | if (NULL == dev) | |
86 | return -ENODEV; | |
87 | ||
88 | dprintk("open minor=%d\n",minor); | |
89 | err = -EBUSY; | |
90 | if (down_trylock(&dev->empress_tsq.lock)) | |
91 | goto done; | |
92 | if (dev->empress_users) | |
93 | goto done_up; | |
94 | ||
95 | dev->empress_users++; | |
96 | file->private_data = dev; | |
97 | err = 0; | |
98 | ||
99 | done_up: | |
100 | up(&dev->empress_tsq.lock); | |
101 | done: | |
102 | return err; | |
103 | } | |
104 | ||
105 | static int ts_release(struct inode *inode, struct file *file) | |
106 | { | |
107 | struct saa7134_dev *dev = file->private_data; | |
108 | ||
109 | if (dev->empress_tsq.streaming) | |
110 | videobuf_streamoff(&dev->empress_tsq); | |
111 | down(&dev->empress_tsq.lock); | |
112 | if (dev->empress_tsq.reading) | |
113 | videobuf_read_stop(&dev->empress_tsq); | |
114 | videobuf_mmap_free(&dev->empress_tsq); | |
115 | dev->empress_users--; | |
116 | ||
117 | /* stop the encoder */ | |
118 | ts_reset_encoder(dev); | |
119 | ||
120 | up(&dev->empress_tsq.lock); | |
121 | return 0; | |
122 | } | |
123 | ||
124 | static ssize_t | |
125 | ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos) | |
126 | { | |
127 | struct saa7134_dev *dev = file->private_data; | |
128 | ||
129 | if (!dev->empress_started) | |
130 | ts_init_encoder(dev); | |
131 | ||
132 | return videobuf_read_stream(&dev->empress_tsq, | |
133 | data, count, ppos, 0, | |
134 | file->f_flags & O_NONBLOCK); | |
135 | } | |
136 | ||
137 | static unsigned int | |
138 | ts_poll(struct file *file, struct poll_table_struct *wait) | |
139 | { | |
140 | struct saa7134_dev *dev = file->private_data; | |
141 | ||
142 | return videobuf_poll_stream(file, &dev->empress_tsq, wait); | |
143 | } | |
144 | ||
145 | ||
146 | static int | |
147 | ts_mmap(struct file *file, struct vm_area_struct * vma) | |
148 | { | |
149 | struct saa7134_dev *dev = file->private_data; | |
150 | ||
151 | return videobuf_mmap_mapper(&dev->empress_tsq, vma); | |
152 | } | |
153 | ||
154 | /* | |
155 | * This function is _not_ called directly, but from | |
156 | * video_generic_ioctl (and maybe others). userspace | |
157 | * copying is done already, arg is a kernel pointer. | |
158 | */ | |
159 | static int ts_do_ioctl(struct inode *inode, struct file *file, | |
160 | unsigned int cmd, void *arg) | |
161 | { | |
162 | struct saa7134_dev *dev = file->private_data; | |
163 | ||
164 | if (debug > 1) | |
165 | saa7134_print_ioctl(dev->name,cmd); | |
166 | switch (cmd) { | |
167 | case VIDIOC_QUERYCAP: | |
168 | { | |
169 | struct v4l2_capability *cap = arg; | |
170 | ||
171 | memset(cap,0,sizeof(*cap)); | |
4ac97914 | 172 | strcpy(cap->driver, "saa7134"); |
1da177e4 LT |
173 | strlcpy(cap->card, saa7134_boards[dev->board].name, |
174 | sizeof(cap->card)); | |
175 | sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci)); | |
176 | cap->version = SAA7134_VERSION_CODE; | |
177 | cap->capabilities = | |
178 | V4L2_CAP_VIDEO_CAPTURE | | |
179 | V4L2_CAP_READWRITE | | |
180 | V4L2_CAP_STREAMING; | |
181 | return 0; | |
182 | } | |
183 | ||
184 | /* --- input switching --------------------------------------- */ | |
185 | case VIDIOC_ENUMINPUT: | |
186 | { | |
187 | struct v4l2_input *i = arg; | |
188 | ||
189 | if (i->index != 0) | |
190 | return -EINVAL; | |
191 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
192 | strcpy(i->name,"CCIR656"); | |
193 | return 0; | |
194 | } | |
195 | case VIDIOC_G_INPUT: | |
196 | { | |
197 | int *i = arg; | |
198 | *i = 0; | |
199 | return 0; | |
200 | } | |
201 | case VIDIOC_S_INPUT: | |
202 | { | |
203 | int *i = arg; | |
204 | ||
205 | if (*i != 0) | |
206 | return -EINVAL; | |
207 | return 0; | |
208 | } | |
209 | /* --- capture ioctls ---------------------------------------- */ | |
210 | ||
211 | case VIDIOC_ENUM_FMT: | |
212 | { | |
213 | struct v4l2_fmtdesc *f = arg; | |
214 | int index; | |
215 | ||
216 | index = f->index; | |
217 | if (index != 0) | |
218 | return -EINVAL; | |
219 | ||
220 | memset(f,0,sizeof(*f)); | |
221 | f->index = index; | |
222 | strlcpy(f->description, "MPEG TS", sizeof(f->description)); | |
223 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
224 | f->pixelformat = V4L2_PIX_FMT_MPEG; | |
225 | return 0; | |
226 | } | |
227 | ||
228 | case VIDIOC_G_FMT: | |
229 | { | |
230 | struct v4l2_format *f = arg; | |
231 | ||
232 | memset(f,0,sizeof(*f)); | |
233 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
234 | ||
0a4c9c93 | 235 | saa7134_i2c_call_clients(dev, cmd, arg); |
1da177e4 LT |
236 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
237 | f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; | |
238 | return 0; | |
239 | } | |
240 | ||
241 | case VIDIOC_S_FMT: | |
242 | { | |
243 | struct v4l2_format *f = arg; | |
244 | ||
245 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
246 | return -EINVAL; | |
247 | ||
0a4c9c93 | 248 | saa7134_i2c_call_clients(dev, cmd, arg); |
1da177e4 LT |
249 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
250 | f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets; | |
251 | return 0; | |
252 | } | |
253 | ||
254 | case VIDIOC_REQBUFS: | |
255 | return videobuf_reqbufs(&dev->empress_tsq,arg); | |
256 | ||
257 | case VIDIOC_QUERYBUF: | |
258 | return videobuf_querybuf(&dev->empress_tsq,arg); | |
259 | ||
260 | case VIDIOC_QBUF: | |
261 | return videobuf_qbuf(&dev->empress_tsq,arg); | |
262 | ||
263 | case VIDIOC_DQBUF: | |
264 | return videobuf_dqbuf(&dev->empress_tsq,arg, | |
265 | file->f_flags & O_NONBLOCK); | |
266 | ||
267 | case VIDIOC_STREAMON: | |
268 | return videobuf_streamon(&dev->empress_tsq); | |
269 | ||
270 | case VIDIOC_STREAMOFF: | |
271 | return videobuf_streamoff(&dev->empress_tsq); | |
272 | ||
273 | case VIDIOC_QUERYCTRL: | |
274 | case VIDIOC_G_CTRL: | |
275 | case VIDIOC_S_CTRL: | |
276 | return saa7134_common_ioctl(dev, cmd, arg); | |
277 | ||
278 | case VIDIOC_S_MPEGCOMP: | |
279 | saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg); | |
280 | ts_init_encoder(dev); | |
281 | return 0; | |
282 | case VIDIOC_G_MPEGCOMP: | |
283 | saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg); | |
284 | return 0; | |
285 | ||
286 | default: | |
287 | return -ENOIOCTLCMD; | |
288 | } | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int ts_ioctl(struct inode *inode, struct file *file, | |
293 | unsigned int cmd, unsigned long arg) | |
294 | { | |
295 | return video_usercopy(inode, file, cmd, arg, ts_do_ioctl); | |
296 | } | |
297 | ||
298 | static struct file_operations ts_fops = | |
299 | { | |
300 | .owner = THIS_MODULE, | |
301 | .open = ts_open, | |
302 | .release = ts_release, | |
303 | .read = ts_read, | |
304 | .poll = ts_poll, | |
305 | .mmap = ts_mmap, | |
306 | .ioctl = ts_ioctl, | |
307 | .llseek = no_llseek, | |
308 | }; | |
309 | ||
310 | /* ----------------------------------------------------------- */ | |
311 | ||
312 | static struct video_device saa7134_empress_template = | |
313 | { | |
314 | .name = "saa7134-empress", | |
315 | .type = 0 /* FIXME */, | |
316 | .type2 = 0 /* FIXME */, | |
317 | .hardware = 0, | |
318 | .fops = &ts_fops, | |
319 | .minor = -1, | |
320 | }; | |
321 | ||
322 | static void empress_signal_update(void* data) | |
323 | { | |
324 | struct saa7134_dev* dev = (struct saa7134_dev*) data; | |
325 | ||
326 | if (dev->nosignal) { | |
327 | dprintk("no video signal\n"); | |
328 | ts_reset_encoder(dev); | |
329 | } else { | |
330 | dprintk("video signal acquired\n"); | |
331 | if (dev->empress_users) | |
332 | ts_init_encoder(dev); | |
333 | } | |
334 | } | |
335 | ||
336 | static void empress_signal_change(struct saa7134_dev *dev) | |
337 | { | |
338 | schedule_work(&dev->empress_workqueue); | |
339 | } | |
340 | ||
341 | ||
342 | static int empress_init(struct saa7134_dev *dev) | |
343 | { | |
344 | int err; | |
345 | ||
346 | dprintk("%s: %s\n",dev->name,__FUNCTION__); | |
347 | dev->empress_dev = video_device_alloc(); | |
348 | if (NULL == dev->empress_dev) | |
349 | return -ENOMEM; | |
350 | *(dev->empress_dev) = saa7134_empress_template; | |
351 | dev->empress_dev->dev = &dev->pci->dev; | |
352 | dev->empress_dev->release = video_device_release; | |
353 | snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name), | |
354 | "%s empress (%s)", dev->name, | |
355 | saa7134_boards[dev->board].name); | |
356 | ||
357 | INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev); | |
358 | ||
359 | err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, | |
360 | empress_nr[dev->nr]); | |
361 | if (err < 0) { | |
362 | printk(KERN_INFO "%s: can't register video device\n", | |
363 | dev->name); | |
364 | video_device_release(dev->empress_dev); | |
365 | dev->empress_dev = NULL; | |
366 | return err; | |
367 | } | |
368 | printk(KERN_INFO "%s: registered device video%d [mpeg]\n", | |
369 | dev->name,dev->empress_dev->minor & 0x1f); | |
370 | ||
371 | videobuf_queue_init(&dev->empress_tsq, &saa7134_ts_qops, | |
372 | dev->pci, &dev->slock, | |
373 | V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
374 | V4L2_FIELD_ALTERNATE, | |
375 | sizeof(struct saa7134_buf), | |
376 | dev); | |
377 | ||
378 | empress_signal_update(dev); | |
379 | return 0; | |
380 | } | |
381 | ||
382 | static int empress_fini(struct saa7134_dev *dev) | |
383 | { | |
384 | dprintk("%s: %s\n",dev->name,__FUNCTION__); | |
385 | ||
386 | if (NULL == dev->empress_dev) | |
387 | return 0; | |
388 | flush_scheduled_work(); | |
389 | video_unregister_device(dev->empress_dev); | |
390 | dev->empress_dev = NULL; | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static struct saa7134_mpeg_ops empress_ops = { | |
395 | .type = SAA7134_MPEG_EMPRESS, | |
396 | .init = empress_init, | |
397 | .fini = empress_fini, | |
398 | .signal_change = empress_signal_change, | |
399 | }; | |
400 | ||
401 | static int __init empress_register(void) | |
402 | { | |
403 | return saa7134_ts_register(&empress_ops); | |
404 | } | |
405 | ||
406 | static void __exit empress_unregister(void) | |
407 | { | |
408 | saa7134_ts_unregister(&empress_ops); | |
409 | } | |
410 | ||
411 | module_init(empress_register); | |
412 | module_exit(empress_unregister); | |
413 | ||
414 | /* ----------------------------------------------------------- */ | |
415 | /* | |
416 | * Local variables: | |
417 | * c-basic-offset: 8 | |
418 | * End: | |
419 | */ |