Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Michael Krufky | 5e453dc | 2006-01-09 15:32:31 -0200 | [diff] [blame^] | 32 | #include <media/v4l2-common.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | /* ------------------------------------------------------------------ */ |
| 35 | |
| 36 | MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); |
| 37 | MODULE_LICENSE("GPL"); |
| 38 | |
| 39 | static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET }; |
Mauro Carvalho Chehab | 674434c | 2005-12-12 00:37:28 -0800 | [diff] [blame] | 40 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | module_param_array(empress_nr, int, NULL, 0444); |
| 42 | MODULE_PARM_DESC(empress_nr,"ts device number"); |
| 43 | |
| 44 | static unsigned int debug = 0; |
| 45 | module_param(debug, int, 0644); |
| 46 | MODULE_PARM_DESC(debug,"enable debug messages"); |
| 47 | |
| 48 | #define dprintk(fmt, arg...) if (debug) \ |
| 49 | printk(KERN_DEBUG "%s/empress: " fmt, dev->name , ## arg) |
| 50 | |
| 51 | /* ------------------------------------------------------------------ */ |
| 52 | |
| 53 | static void ts_reset_encoder(struct saa7134_dev* dev) |
| 54 | { |
| 55 | if (!dev->empress_started) |
| 56 | return; |
| 57 | |
| 58 | saa_writeb(SAA7134_SPECIAL_MODE, 0x00); |
| 59 | msleep(10); |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 60 | saa_writeb(SAA7134_SPECIAL_MODE, 0x01); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | msleep(100); |
| 62 | dev->empress_started = 0; |
| 63 | } |
| 64 | |
| 65 | static int ts_init_encoder(struct saa7134_dev* dev) |
| 66 | { |
| 67 | ts_reset_encoder(dev); |
| 68 | saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, NULL); |
| 69 | dev->empress_started = 1; |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 70 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | } |
| 72 | |
| 73 | /* ------------------------------------------------------------------ */ |
| 74 | |
| 75 | static int ts_open(struct inode *inode, struct file *file) |
| 76 | { |
| 77 | int minor = iminor(inode); |
| 78 | struct saa7134_dev *h,*dev = NULL; |
| 79 | struct list_head *list; |
| 80 | int err; |
| 81 | |
| 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) |
| 85 | dev = h; |
| 86 | } |
| 87 | if (NULL == dev) |
| 88 | return -ENODEV; |
| 89 | |
| 90 | dprintk("open minor=%d\n",minor); |
| 91 | err = -EBUSY; |
| 92 | if (down_trylock(&dev->empress_tsq.lock)) |
| 93 | goto done; |
| 94 | if (dev->empress_users) |
| 95 | goto done_up; |
| 96 | |
| 97 | dev->empress_users++; |
| 98 | file->private_data = dev; |
| 99 | err = 0; |
| 100 | |
| 101 | done_up: |
| 102 | up(&dev->empress_tsq.lock); |
| 103 | done: |
| 104 | return err; |
| 105 | } |
| 106 | |
| 107 | static int ts_release(struct inode *inode, struct file *file) |
| 108 | { |
| 109 | struct saa7134_dev *dev = file->private_data; |
| 110 | |
| 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--; |
| 118 | |
| 119 | /* stop the encoder */ |
| 120 | ts_reset_encoder(dev); |
| 121 | |
| 122 | up(&dev->empress_tsq.lock); |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | static ssize_t |
| 127 | ts_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
| 128 | { |
| 129 | struct saa7134_dev *dev = file->private_data; |
| 130 | |
| 131 | if (!dev->empress_started) |
| 132 | ts_init_encoder(dev); |
| 133 | |
| 134 | return videobuf_read_stream(&dev->empress_tsq, |
| 135 | data, count, ppos, 0, |
| 136 | file->f_flags & O_NONBLOCK); |
| 137 | } |
| 138 | |
| 139 | static unsigned int |
| 140 | ts_poll(struct file *file, struct poll_table_struct *wait) |
| 141 | { |
| 142 | struct saa7134_dev *dev = file->private_data; |
| 143 | |
| 144 | return videobuf_poll_stream(file, &dev->empress_tsq, wait); |
| 145 | } |
| 146 | |
| 147 | |
| 148 | static int |
| 149 | ts_mmap(struct file *file, struct vm_area_struct * vma) |
| 150 | { |
| 151 | struct saa7134_dev *dev = file->private_data; |
| 152 | |
| 153 | return videobuf_mmap_mapper(&dev->empress_tsq, vma); |
| 154 | } |
| 155 | |
| 156 | /* |
| 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. |
| 160 | */ |
| 161 | static int ts_do_ioctl(struct inode *inode, struct file *file, |
| 162 | unsigned int cmd, void *arg) |
| 163 | { |
| 164 | struct saa7134_dev *dev = file->private_data; |
| 165 | |
| 166 | if (debug > 1) |
Michael Krufky | 5e453dc | 2006-01-09 15:32:31 -0200 | [diff] [blame^] | 167 | v4l_print_ioctl(dev->name,cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | switch (cmd) { |
| 169 | case VIDIOC_QUERYCAP: |
| 170 | { |
| 171 | struct v4l2_capability *cap = arg; |
| 172 | |
| 173 | memset(cap,0,sizeof(*cap)); |
Mauro Carvalho Chehab | 4ac9791 | 2005-11-08 21:37:43 -0800 | [diff] [blame] | 174 | strcpy(cap->driver, "saa7134"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | strlcpy(cap->card, saa7134_boards[dev->board].name, |
| 176 | sizeof(cap->card)); |
| 177 | sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci)); |
| 178 | cap->version = SAA7134_VERSION_CODE; |
| 179 | cap->capabilities = |
| 180 | V4L2_CAP_VIDEO_CAPTURE | |
| 181 | V4L2_CAP_READWRITE | |
| 182 | V4L2_CAP_STREAMING; |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | /* --- input switching --------------------------------------- */ |
| 187 | case VIDIOC_ENUMINPUT: |
| 188 | { |
| 189 | struct v4l2_input *i = arg; |
| 190 | |
| 191 | if (i->index != 0) |
| 192 | return -EINVAL; |
| 193 | i->type = V4L2_INPUT_TYPE_CAMERA; |
| 194 | strcpy(i->name,"CCIR656"); |
| 195 | return 0; |
| 196 | } |
| 197 | case VIDIOC_G_INPUT: |
| 198 | { |
| 199 | int *i = arg; |
| 200 | *i = 0; |
| 201 | return 0; |
| 202 | } |
| 203 | case VIDIOC_S_INPUT: |
| 204 | { |
| 205 | int *i = arg; |
| 206 | |
| 207 | if (*i != 0) |
| 208 | return -EINVAL; |
| 209 | return 0; |
| 210 | } |
| 211 | /* --- capture ioctls ---------------------------------------- */ |
| 212 | |
| 213 | case VIDIOC_ENUM_FMT: |
| 214 | { |
| 215 | struct v4l2_fmtdesc *f = arg; |
| 216 | int index; |
| 217 | |
| 218 | index = f->index; |
| 219 | if (index != 0) |
| 220 | return -EINVAL; |
| 221 | |
| 222 | memset(f,0,sizeof(*f)); |
| 223 | f->index = index; |
| 224 | strlcpy(f->description, "MPEG TS", sizeof(f->description)); |
| 225 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 226 | f->pixelformat = V4L2_PIX_FMT_MPEG; |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | case VIDIOC_G_FMT: |
| 231 | { |
| 232 | struct v4l2_format *f = arg; |
| 233 | |
| 234 | memset(f,0,sizeof(*f)); |
| 235 | f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 236 | |
Frederic CAND | 0a4c9c9 | 2005-05-05 16:15:52 -0700 | [diff] [blame] | 237 | saa7134_i2c_call_clients(dev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
| 239 | f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets; |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | case VIDIOC_S_FMT: |
| 244 | { |
| 245 | struct v4l2_format *f = arg; |
| 246 | |
| 247 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 248 | return -EINVAL; |
| 249 | |
Frederic CAND | 0a4c9c9 | 2005-05-05 16:15:52 -0700 | [diff] [blame] | 250 | saa7134_i2c_call_clients(dev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG; |
| 252 | f->fmt.pix.sizeimage = TS_PACKET_SIZE* dev->ts.nr_packets; |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | case VIDIOC_REQBUFS: |
| 257 | return videobuf_reqbufs(&dev->empress_tsq,arg); |
| 258 | |
| 259 | case VIDIOC_QUERYBUF: |
| 260 | return videobuf_querybuf(&dev->empress_tsq,arg); |
| 261 | |
| 262 | case VIDIOC_QBUF: |
| 263 | return videobuf_qbuf(&dev->empress_tsq,arg); |
| 264 | |
| 265 | case VIDIOC_DQBUF: |
| 266 | return videobuf_dqbuf(&dev->empress_tsq,arg, |
| 267 | file->f_flags & O_NONBLOCK); |
| 268 | |
| 269 | case VIDIOC_STREAMON: |
| 270 | return videobuf_streamon(&dev->empress_tsq); |
| 271 | |
| 272 | case VIDIOC_STREAMOFF: |
| 273 | return videobuf_streamoff(&dev->empress_tsq); |
| 274 | |
| 275 | case VIDIOC_QUERYCTRL: |
| 276 | case VIDIOC_G_CTRL: |
| 277 | case VIDIOC_S_CTRL: |
| 278 | return saa7134_common_ioctl(dev, cmd, arg); |
| 279 | |
| 280 | case VIDIOC_S_MPEGCOMP: |
| 281 | saa7134_i2c_call_clients(dev, VIDIOC_S_MPEGCOMP, arg); |
| 282 | ts_init_encoder(dev); |
| 283 | return 0; |
| 284 | case VIDIOC_G_MPEGCOMP: |
| 285 | saa7134_i2c_call_clients(dev, VIDIOC_G_MPEGCOMP, arg); |
| 286 | return 0; |
| 287 | |
| 288 | default: |
| 289 | return -ENOIOCTLCMD; |
| 290 | } |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static int ts_ioctl(struct inode *inode, struct file *file, |
| 295 | unsigned int cmd, unsigned long arg) |
| 296 | { |
| 297 | return video_usercopy(inode, file, cmd, arg, ts_do_ioctl); |
| 298 | } |
| 299 | |
| 300 | static struct file_operations ts_fops = |
| 301 | { |
| 302 | .owner = THIS_MODULE, |
| 303 | .open = ts_open, |
| 304 | .release = ts_release, |
| 305 | .read = ts_read, |
| 306 | .poll = ts_poll, |
| 307 | .mmap = ts_mmap, |
| 308 | .ioctl = ts_ioctl, |
| 309 | .llseek = no_llseek, |
| 310 | }; |
| 311 | |
| 312 | /* ----------------------------------------------------------- */ |
| 313 | |
| 314 | static struct video_device saa7134_empress_template = |
| 315 | { |
| 316 | .name = "saa7134-empress", |
| 317 | .type = 0 /* FIXME */, |
| 318 | .type2 = 0 /* FIXME */, |
| 319 | .hardware = 0, |
| 320 | .fops = &ts_fops, |
| 321 | .minor = -1, |
| 322 | }; |
| 323 | |
| 324 | static void empress_signal_update(void* data) |
| 325 | { |
| 326 | struct saa7134_dev* dev = (struct saa7134_dev*) data; |
| 327 | |
| 328 | if (dev->nosignal) { |
| 329 | dprintk("no video signal\n"); |
| 330 | ts_reset_encoder(dev); |
| 331 | } else { |
| 332 | dprintk("video signal acquired\n"); |
| 333 | if (dev->empress_users) |
| 334 | ts_init_encoder(dev); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | static void empress_signal_change(struct saa7134_dev *dev) |
| 339 | { |
| 340 | schedule_work(&dev->empress_workqueue); |
| 341 | } |
| 342 | |
| 343 | |
| 344 | static int empress_init(struct saa7134_dev *dev) |
| 345 | { |
| 346 | int err; |
| 347 | |
| 348 | dprintk("%s: %s\n",dev->name,__FUNCTION__); |
| 349 | dev->empress_dev = video_device_alloc(); |
| 350 | if (NULL == dev->empress_dev) |
| 351 | return -ENOMEM; |
| 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); |
| 358 | |
| 359 | INIT_WORK(&dev->empress_workqueue, empress_signal_update, (void*) dev); |
| 360 | |
| 361 | err = video_register_device(dev->empress_dev,VFL_TYPE_GRABBER, |
| 362 | empress_nr[dev->nr]); |
| 363 | if (err < 0) { |
| 364 | printk(KERN_INFO "%s: can't register video device\n", |
| 365 | dev->name); |
| 366 | video_device_release(dev->empress_dev); |
| 367 | dev->empress_dev = NULL; |
| 368 | return err; |
| 369 | } |
| 370 | printk(KERN_INFO "%s: registered device video%d [mpeg]\n", |
| 371 | dev->name,dev->empress_dev->minor & 0x1f); |
| 372 | |
| 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), |
| 378 | dev); |
| 379 | |
| 380 | empress_signal_update(dev); |
| 381 | return 0; |
| 382 | } |
| 383 | |
| 384 | static int empress_fini(struct saa7134_dev *dev) |
| 385 | { |
| 386 | dprintk("%s: %s\n",dev->name,__FUNCTION__); |
| 387 | |
| 388 | if (NULL == dev->empress_dev) |
| 389 | return 0; |
| 390 | flush_scheduled_work(); |
| 391 | video_unregister_device(dev->empress_dev); |
| 392 | dev->empress_dev = NULL; |
| 393 | return 0; |
| 394 | } |
| 395 | |
| 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, |
| 401 | }; |
| 402 | |
| 403 | static int __init empress_register(void) |
| 404 | { |
| 405 | return saa7134_ts_register(&empress_ops); |
| 406 | } |
| 407 | |
| 408 | static void __exit empress_unregister(void) |
| 409 | { |
| 410 | saa7134_ts_unregister(&empress_ops); |
| 411 | } |
| 412 | |
| 413 | module_init(empress_register); |
| 414 | module_exit(empress_unregister); |
| 415 | |
| 416 | /* ----------------------------------------------------------- */ |
| 417 | /* |
| 418 | * Local variables: |
| 419 | * c-basic-offset: 8 |
| 420 | * End: |
| 421 | */ |