Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Main USB camera driver |
| 3 | * |
| 4 | * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software Foundation, |
| 18 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 19 | */ |
| 20 | |
| 21 | #define MODULE_NAME "gspca" |
| 22 | |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/fs.h> |
| 25 | #include <linux/vmalloc.h> |
| 26 | #include <linux/sched.h> |
| 27 | #include <linux/slab.h> |
| 28 | #include <linux/mm.h> |
| 29 | #include <linux/string.h> |
| 30 | #include <linux/pagemap.h> |
| 31 | #include <asm/io.h> |
| 32 | #include <asm/page.h> |
| 33 | #include <asm/uaccess.h> |
| 34 | #include <linux/jiffies.h> |
| 35 | |
| 36 | #include "gspca.h" |
| 37 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 38 | /* option */ |
| 39 | #define GSPCA_HLP 0 |
| 40 | |
| 41 | /* global values */ |
| 42 | #define DEF_NURBS 2 /* default number of URBs (mmap) */ |
| 43 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 44 | MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>"); |
| 45 | MODULE_DESCRIPTION("GSPCA USB Camera Driver"); |
| 46 | MODULE_LICENSE("GPL"); |
| 47 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 48 | #define DRIVER_VERSION_NUMBER KERNEL_VERSION(0, 2, 15) |
| 49 | static const char version[] = "0.2.15"; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 50 | |
| 51 | static int video_nr = -1; |
| 52 | |
| 53 | static int comp_fac = 30; /* Buffer size ratio when compressed in % */ |
| 54 | |
| 55 | #ifdef GSPCA_DEBUG |
| 56 | int gspca_debug = D_ERR | D_PROBE; |
| 57 | EXPORT_SYMBOL(gspca_debug); |
| 58 | |
| 59 | static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h) |
| 60 | { |
| 61 | if ((pixfmt >> 24) >= '0' && (pixfmt >> 24) <= 'z') { |
| 62 | PDEBUG(D_CONF|D_STREAM, "%s %c%c%c%c %dx%d", |
| 63 | txt, |
| 64 | pixfmt & 0xff, |
| 65 | (pixfmt >> 8) & 0xff, |
| 66 | (pixfmt >> 16) & 0xff, |
| 67 | pixfmt >> 24, |
| 68 | w, h); |
| 69 | } else { |
| 70 | PDEBUG(D_CONF|D_STREAM, "%s 0x%08x %dx%d", |
| 71 | txt, |
| 72 | pixfmt, |
| 73 | w, h); |
| 74 | } |
| 75 | } |
| 76 | #else |
| 77 | #define PDEBUG_MODE(txt, pixfmt, w, h) |
| 78 | #endif |
| 79 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 80 | /* specific memory types - !! should different from V4L2_MEMORY_xxx */ |
| 81 | #define GSPCA_MEMORY_NO 0 /* V4L2_MEMORY_xxx starts from 1 */ |
| 82 | #define GSPCA_MEMORY_READ 7 |
| 83 | |
| 84 | #ifndef GSPCA_HLP |
| 85 | #define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE) |
| 86 | #else |
| 87 | #define GSPCA_BUF_FLAG_DECODE 0x1000 /* internal buffer flag */ |
| 88 | #define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE \ |
| 89 | | GSPCA_BUF_FLAG_DECODE) |
| 90 | |
| 91 | static int autostart = 4; |
| 92 | module_param(autostart, int, 0644); |
| 93 | MODULE_PARM_DESC(autostart, |
| 94 | "Automatically start the helper process"); |
| 95 | |
| 96 | /* try to start the helper process */ |
| 97 | static void start_hlp(void) |
| 98 | { |
| 99 | int ret; |
| 100 | static char *argv[] = {"gspca_hlp", NULL}; |
| 101 | static char *env[] = {NULL}; |
| 102 | |
| 103 | if (autostart <= 0) { |
| 104 | if (autostart < 0) |
| 105 | PDEBUG(D_ERR|D_PROBE, "Too many helper restart"); |
| 106 | return; |
| 107 | } |
| 108 | autostart--; |
| 109 | if (autostart == 0) |
| 110 | autostart = -1; |
| 111 | ret = call_usermodehelper("/sbin/gspca_hlp", argv, env, |
| 112 | UMH_WAIT_EXEC); |
| 113 | if (ret != 0) |
| 114 | PDEBUG(D_ERR|D_PROBE, |
| 115 | "/sbin/gspca_hlp start failed %d", ret); |
| 116 | } |
| 117 | |
| 118 | /* /dev/gspca_hlp stuff */ |
| 119 | #include <linux/miscdevice.h> |
| 120 | #include "gspca_hlp.h" |
| 121 | |
| 122 | /* !! possible decodings defined in decoder.c */ |
| 123 | static __u32 bayer_to_tb[] = { |
| 124 | V4L2_PIX_FMT_SBGGR8, |
| 125 | V4L2_PIX_FMT_YUYV, |
| 126 | V4L2_PIX_FMT_YUV420, |
| 127 | V4L2_PIX_FMT_RGB24, |
| 128 | V4L2_PIX_FMT_BGR24, |
| 129 | V4L2_PIX_FMT_RGB565, |
| 130 | }; |
| 131 | static __u32 jpeg_to_tb[] = { |
| 132 | V4L2_PIX_FMT_JPEG, |
| 133 | V4L2_PIX_FMT_YUYV, |
| 134 | V4L2_PIX_FMT_YUV420, |
| 135 | V4L2_PIX_FMT_RGB24, |
| 136 | V4L2_PIX_FMT_BGR24, |
| 137 | V4L2_PIX_FMT_RGB565, |
| 138 | }; |
| 139 | |
| 140 | /* /dev/gspca_hlp device */ |
| 141 | struct hlp_dev { |
| 142 | struct gspca_dev *gspca_dev; /* associated device */ |
| 143 | struct gspca_frame *frame; /* frame being decoded */ |
| 144 | __u32 pixfmt; /* webcam pixel format */ |
| 145 | atomic_t nevent; /* nb of frames ready to decode */ |
| 146 | wait_queue_head_t wq; /* wait queue */ |
| 147 | char fr_d; /* next frame to decode */ |
| 148 | } *hlp; |
| 149 | |
| 150 | static int hlp_open(struct inode *inode, struct file *file) |
| 151 | { |
| 152 | struct hlp_dev *hlp_dev; |
| 153 | |
| 154 | PDEBUG(D_CONF, "hlp open"); |
| 155 | if (hlp != 0) |
| 156 | return -EBUSY; |
| 157 | hlp_dev = kzalloc(sizeof *hlp_dev, GFP_KERNEL); |
| 158 | if (hlp_dev == NULL) { |
| 159 | err("couldn't kzalloc hlp struct"); |
| 160 | return -EIO; |
| 161 | } |
| 162 | init_waitqueue_head(&hlp_dev->wq); |
| 163 | file->private_data = hlp_dev; |
| 164 | hlp = hlp_dev; |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | static int hlp_close(struct inode *inode, struct file *file) |
| 169 | { |
| 170 | struct gspca_dev *gspca_dev; |
| 171 | int mode; |
| 172 | |
| 173 | PDEBUG(D_CONF, "hlp close"); |
| 174 | file->private_data = NULL; |
| 175 | |
| 176 | /* stop decoding */ |
| 177 | gspca_dev = hlp->gspca_dev; |
| 178 | if (gspca_dev != 0) { |
| 179 | mode = gspca_dev->curr_mode; |
| 180 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[mode].pixfmt; |
| 181 | } |
| 182 | |
| 183 | /* destroy the helper structure */ |
| 184 | kfree(hlp); |
| 185 | hlp = 0; |
| 186 | |
| 187 | /* try to restart the helper process */ |
| 188 | start_hlp(); |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static ssize_t hlp_read(struct file *file, char __user *buf, |
| 193 | size_t cnt, loff_t *ppos) |
| 194 | { |
| 195 | struct hlp_dev *hlp_dev = file->private_data; |
| 196 | struct gspca_dev *gspca_dev; |
| 197 | struct gspca_frame *frame; |
| 198 | struct gspca_hlp_read_hd head; |
| 199 | int i, j, len, ret; |
| 200 | |
| 201 | PDEBUG(D_FRAM, "hlp read (%d)", cnt); |
| 202 | |
| 203 | /* check / wait till a frame is ready */ |
| 204 | for (;;) { |
| 205 | gspca_dev = hlp_dev->gspca_dev; |
| 206 | if (gspca_dev != 0 && gspca_dev->streaming) { |
| 207 | i = hlp_dev->fr_d; /* frame to decode */ |
| 208 | j = gspca_dev->fr_queue[i]; |
| 209 | frame = &gspca_dev->frame[j]; |
| 210 | if (frame->v4l2_buf.flags & GSPCA_BUF_FLAG_DECODE) |
| 211 | break; |
| 212 | } |
| 213 | ret = wait_event_interruptible(hlp_dev->wq, |
| 214 | atomic_read(&hlp_dev->nevent) > 0); |
| 215 | if (ret < 0) { /* helper process is killed */ |
| 216 | autostart = 0; /* don't restart it */ |
| 217 | return ret; |
| 218 | } |
| 219 | } |
| 220 | atomic_dec(&hlp_dev->nevent); |
| 221 | hlp_dev->fr_d = (i + 1) % gspca_dev->nframes; |
| 222 | PDEBUG(D_FRAM, "hlp read q:%d i:%d d:%d o:%d", |
| 223 | gspca_dev->fr_q, |
| 224 | gspca_dev->fr_i, |
| 225 | hlp_dev->fr_d, |
| 226 | gspca_dev->fr_o); |
| 227 | |
| 228 | hlp_dev->frame = frame; /* memorize the current frame */ |
| 229 | len = frame->v4l2_buf.bytesused; |
| 230 | if (cnt < sizeof head - sizeof head.data + len) |
| 231 | /*fixme: special errno?*/ |
| 232 | return -EINVAL; |
| 233 | head.pixfmt_out = gspca_dev->pixfmt; |
| 234 | head.pixfmt_in = hlp_dev->pixfmt; |
| 235 | head.width = gspca_dev->width; |
| 236 | head.height = gspca_dev->height; |
| 237 | copy_to_user(buf, &head, sizeof head); |
| 238 | copy_to_user(buf + sizeof head - sizeof head.data, |
| 239 | frame->data, len); |
| 240 | return sizeof head - sizeof head.data + len; |
| 241 | } |
| 242 | |
| 243 | static ssize_t hlp_write(struct file *file, |
| 244 | const char __user *buf, |
| 245 | size_t cnt, loff_t *ppos) |
| 246 | { |
| 247 | struct hlp_dev *hlp_dev = file->private_data; |
| 248 | struct gspca_dev *gspca_dev; |
| 249 | struct gspca_frame *frame; |
| 250 | |
| 251 | PDEBUG(D_FRAM, "hlp write (%d)", cnt); |
| 252 | gspca_dev = hlp_dev->gspca_dev; |
| 253 | if (gspca_dev == 0) |
| 254 | return cnt; |
| 255 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 256 | return -ERESTARTSYS; |
| 257 | if (!gspca_dev->streaming) |
| 258 | goto out; |
| 259 | frame = hlp_dev->frame; |
| 260 | hlp_dev->frame = 0; |
| 261 | if (frame == 0) |
| 262 | goto out; |
| 263 | if (cnt > frame->v4l2_buf.length) { |
| 264 | PDEBUG(D_ERR|D_FRAM, "bad frame size %d - %d", |
| 265 | cnt, frame->v4l2_buf.length); |
| 266 | cnt = -EINVAL; |
| 267 | goto out; |
| 268 | } |
| 269 | copy_from_user(frame->data, buf, cnt); |
| 270 | frame->v4l2_buf.bytesused = cnt; |
| 271 | frame->v4l2_buf.flags &= ~(V4L2_BUF_FLAG_QUEUED |
| 272 | | GSPCA_BUF_FLAG_DECODE); |
| 273 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE; |
| 274 | mutex_unlock(&gspca_dev->queue_lock); |
| 275 | atomic_inc(&gspca_dev->nevent); |
| 276 | wake_up_interruptible(&gspca_dev->wq); /* event = new frame */ |
| 277 | PDEBUG(D_FRAM, "hlp write q:%d i:%d d:%d o:%d", |
| 278 | gspca_dev->fr_q, |
| 279 | gspca_dev->fr_i, |
| 280 | hlp_dev->fr_d, |
| 281 | gspca_dev->fr_o); |
| 282 | return cnt; |
| 283 | out: |
| 284 | mutex_unlock(&gspca_dev->queue_lock); |
| 285 | return cnt; |
| 286 | } |
| 287 | |
| 288 | static struct file_operations hlp_fops = { |
| 289 | .owner = THIS_MODULE, |
| 290 | .open = hlp_open, |
| 291 | .release = hlp_close, |
| 292 | .read = hlp_read, |
| 293 | .write = hlp_write, |
| 294 | .llseek = no_llseek |
| 295 | }; |
| 296 | static struct miscdevice hlp_device = { |
| 297 | .minor = MISC_DYNAMIC_MINOR, |
| 298 | .name = "gspca_hlp", |
| 299 | .fops = &hlp_fops, |
| 300 | }; |
| 301 | #endif |
| 302 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 303 | /* |
| 304 | * VMA operations. |
| 305 | */ |
| 306 | static void gspca_vm_open(struct vm_area_struct *vma) |
| 307 | { |
| 308 | struct gspca_frame *frame = vma->vm_private_data; |
| 309 | |
| 310 | frame->vma_use_count++; |
| 311 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_MAPPED; |
| 312 | } |
| 313 | |
| 314 | static void gspca_vm_close(struct vm_area_struct *vma) |
| 315 | { |
| 316 | struct gspca_frame *frame = vma->vm_private_data; |
| 317 | |
| 318 | if (--frame->vma_use_count <= 0) |
| 319 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_MAPPED; |
| 320 | } |
| 321 | |
| 322 | static struct vm_operations_struct gspca_vm_ops = { |
| 323 | .open = gspca_vm_open, |
| 324 | .close = gspca_vm_close, |
| 325 | }; |
| 326 | |
| 327 | /* |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 328 | * fill a video frame from an URB and resubmit |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 329 | */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 330 | static void fill_frame(struct gspca_dev *gspca_dev, |
| 331 | struct urb *urb) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 332 | { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 333 | struct gspca_frame *frame; |
| 334 | unsigned char *data; /* address of data in the iso message */ |
| 335 | int i, j, len, st; |
| 336 | cam_pkt_op pkt_scan; |
| 337 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 338 | pkt_scan = gspca_dev->sd_desc->pkt_scan; |
| 339 | for (i = 0; i < urb->number_of_packets; i++) { |
| 340 | |
| 341 | /* check the availability of the frame buffer */ |
| 342 | j = gspca_dev->fr_i; |
| 343 | j = gspca_dev->fr_queue[j]; |
| 344 | frame = &gspca_dev->frame[j]; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 345 | if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 346 | != V4L2_BUF_FLAG_QUEUED) { |
| 347 | gspca_dev->last_packet_type = DISCARD_PACKET; |
| 348 | break; |
| 349 | } |
| 350 | |
| 351 | /* check the packet status and length */ |
| 352 | len = urb->iso_frame_desc[i].actual_length; |
| 353 | st = urb->iso_frame_desc[i].status; |
| 354 | if (st) { |
| 355 | PDEBUG(D_ERR, "ISOC data error: [%d] len=%d, status=%d", |
| 356 | i, len, st); |
| 357 | gspca_dev->last_packet_type = DISCARD_PACKET; |
| 358 | continue; |
| 359 | } |
| 360 | if (len == 0) |
| 361 | continue; |
| 362 | |
| 363 | /* let the packet be analyzed by the subdriver */ |
| 364 | PDEBUG(D_PACK, "packet [%d] o:%d l:%d", |
| 365 | i, urb->iso_frame_desc[i].offset, len); |
| 366 | data = (unsigned char *) urb->transfer_buffer |
| 367 | + urb->iso_frame_desc[i].offset; |
| 368 | pkt_scan(gspca_dev, frame, data, len); |
| 369 | } |
| 370 | |
| 371 | /* resubmit the URB */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 372 | /*fixme: don't do that when userptr and too many URBs sent*/ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 373 | urb->status = 0; |
| 374 | st = usb_submit_urb(urb, GFP_ATOMIC); |
| 375 | if (st < 0) |
| 376 | PDEBUG(D_ERR|D_PACK, "usb_submit_urb() ret %d", st); |
| 377 | } |
| 378 | |
| 379 | /* |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 380 | * ISOC message interrupt from the USB device |
| 381 | * |
| 382 | * Analyse each packet and call the subdriver for copy |
| 383 | * to the frame buffer. |
| 384 | * |
| 385 | * There are 2 functions: |
| 386 | * - the first one (isoc_irq_mmap) is used when the application |
| 387 | * buffers are mapped. The frame detection and copy is done |
| 388 | * at interrupt level. |
| 389 | * - the second one (isoc_irq_user) is used when the application |
| 390 | * buffers are in user space (userptr). The frame detection |
| 391 | * and copy is done by the application. |
| 392 | */ |
| 393 | static void isoc_irq_mmap(struct urb *urb) |
| 394 | { |
| 395 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; |
| 396 | |
| 397 | PDEBUG(D_PACK, "isoc irq mmap"); |
| 398 | if (!gspca_dev->streaming) |
| 399 | return; |
| 400 | fill_frame(gspca_dev, urb); |
| 401 | } |
| 402 | |
| 403 | static void isoc_irq_user(struct urb *urb) |
| 404 | { |
| 405 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; |
| 406 | int i; |
| 407 | |
| 408 | PDEBUG(D_PACK, "isoc irq user"); |
| 409 | if (!gspca_dev->streaming) |
| 410 | return; |
| 411 | |
| 412 | i = gspca_dev->urb_in % gspca_dev->nurbs; |
| 413 | if (urb != gspca_dev->urb[i]) { |
| 414 | PDEBUG(D_ERR|D_PACK, "urb out of sequence"); |
| 415 | return; /* should never occur */ |
| 416 | } |
| 417 | |
| 418 | gspca_dev->urb_in++; |
| 419 | atomic_inc(&gspca_dev->nevent); /* new event */ |
| 420 | wake_up_interruptible(&gspca_dev->wq); |
| 421 | /*fixme: submit a new URBs until urb_in == urb_out (% nurbs)*/ |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * treat the isoc messages |
| 426 | * |
| 427 | * This routine is called by the application (case userptr). |
| 428 | */ |
| 429 | static void isoc_transfer(struct gspca_dev *gspca_dev) |
| 430 | { |
| 431 | struct urb *urb; |
| 432 | int i; |
| 433 | |
| 434 | for (;;) { |
| 435 | i = gspca_dev->urb_out; |
| 436 | PDEBUG(D_PACK, "isoc transf i:%d o:%d", gspca_dev->urb_in, i); |
| 437 | if (i == gspca_dev->urb_in) /* isoc message to read */ |
| 438 | break; /* no (more) message */ |
| 439 | atomic_dec(&gspca_dev->nevent); |
| 440 | /*PDEBUG(D_PACK, "isoc_trf nevent: %d", atomic_read(&gspca_dev->nevent));*/ |
| 441 | gspca_dev->urb_out = i + 1; /* message treated */ |
| 442 | urb = gspca_dev->urb[i % gspca_dev->nurbs]; |
| 443 | fill_frame(gspca_dev, urb); |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | /* |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 448 | * add data to the current frame |
| 449 | * |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 450 | * This function is called by the subdrivers at interrupt level |
| 451 | * or user level. |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 452 | * To build a frame, these ones must add |
| 453 | * - one FIRST_PACKET |
| 454 | * - 0 or many INTER_PACKETs |
| 455 | * - one LAST_PACKET |
| 456 | * DISCARD_PACKET invalidates the whole frame. |
| 457 | * On LAST_PACKET, a new frame is returned. |
| 458 | */ |
| 459 | struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev, |
| 460 | int packet_type, |
| 461 | struct gspca_frame *frame, |
| 462 | unsigned char *data, |
| 463 | int len) |
| 464 | { |
| 465 | int i, j; |
| 466 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 467 | PDEBUG(D_PACK, "add t:%d l:%d", packet_type, len); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 468 | |
| 469 | /* when start of a new frame, if the current frame buffer |
| 470 | * is not queued, discard the whole frame */ |
| 471 | if (packet_type == FIRST_PACKET) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 472 | if ((frame->v4l2_buf.flags & BUF_ALL_FLAGS) |
| 473 | != V4L2_BUF_FLAG_QUEUED) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 474 | gspca_dev->last_packet_type = DISCARD_PACKET; |
| 475 | return frame; |
| 476 | } |
| 477 | frame->data_end = frame->data; |
| 478 | jiffies_to_timeval(get_jiffies_64(), |
| 479 | &frame->v4l2_buf.timestamp); |
| 480 | frame->v4l2_buf.sequence = ++gspca_dev->sequence; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 481 | } else if (gspca_dev->last_packet_type == DISCARD_PACKET) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 482 | return frame; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 483 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 484 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 485 | /* append the packet to the frame buffer */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 486 | if (len > 0) { |
| 487 | if (frame->data_end - frame->data + len |
| 488 | > frame->v4l2_buf.length) { |
| 489 | PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d", |
| 490 | frame->data_end - frame->data + len, |
| 491 | frame->v4l2_buf.length); |
| 492 | packet_type = DISCARD_PACKET; |
| 493 | } else { |
| 494 | if (frame->v4l2_buf.memory != V4L2_MEMORY_USERPTR) |
| 495 | memcpy(frame->data_end, data, len); |
| 496 | else |
| 497 | copy_to_user(frame->data_end, data, len); |
| 498 | frame->data_end += len; |
| 499 | } |
| 500 | } |
| 501 | gspca_dev->last_packet_type = packet_type; |
| 502 | |
| 503 | /* if last packet, wake the application and advance in the queue */ |
| 504 | if (packet_type == LAST_PACKET) { |
| 505 | frame->v4l2_buf.bytesused = frame->data_end - frame->data; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 506 | #ifndef GSPCA_HLP |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 507 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED; |
| 508 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE; |
| 509 | atomic_inc(&gspca_dev->nevent); |
| 510 | wake_up_interruptible(&gspca_dev->wq); /* event = new frame */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 511 | #else /*GSPCA_HLP*/ |
| 512 | if (hlp != 0 && hlp->gspca_dev == gspca_dev) { |
| 513 | frame->v4l2_buf.flags |= GSPCA_BUF_FLAG_DECODE; |
| 514 | atomic_inc(&hlp->nevent); |
| 515 | wake_up_interruptible(&hlp->wq); |
| 516 | } else { |
| 517 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_QUEUED; |
| 518 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_DONE; |
| 519 | atomic_inc(&gspca_dev->nevent); |
| 520 | wake_up_interruptible(&gspca_dev->wq); /* new frame */ |
| 521 | } |
| 522 | #endif /*GSPCA_HLP*/ |
| 523 | i = (gspca_dev->fr_i + 1) % gspca_dev->nframes; |
| 524 | gspca_dev->fr_i = i; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 525 | PDEBUG(D_FRAM, "frame complete len:%d q:%d i:%d o:%d", |
| 526 | frame->v4l2_buf.bytesused, |
| 527 | gspca_dev->fr_q, |
| 528 | i, |
| 529 | gspca_dev->fr_o); |
| 530 | j = gspca_dev->fr_queue[i]; |
| 531 | frame = &gspca_dev->frame[j]; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 532 | } |
| 533 | return frame; |
| 534 | } |
| 535 | EXPORT_SYMBOL(gspca_frame_add); |
| 536 | |
| 537 | static int gspca_is_compressed(__u32 format) |
| 538 | { |
| 539 | switch (format) { |
| 540 | case V4L2_PIX_FMT_MJPEG: |
| 541 | case V4L2_PIX_FMT_JPEG: |
| 542 | return 1; |
| 543 | } |
| 544 | return 0; |
| 545 | } |
| 546 | |
| 547 | static void *rvmalloc(unsigned long size) |
| 548 | { |
| 549 | void *mem; |
| 550 | unsigned long adr; |
| 551 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 552 | /* size = PAGE_ALIGN(size); (already done) */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 553 | mem = vmalloc_32(size); |
| 554 | if (mem != 0) { |
| 555 | memset(mem, 0, size); |
| 556 | adr = (unsigned long) mem; |
| 557 | while ((long) size > 0) { |
| 558 | SetPageReserved(vmalloc_to_page((void *) adr)); |
| 559 | adr += PAGE_SIZE; |
| 560 | size -= PAGE_SIZE; |
| 561 | } |
| 562 | } |
| 563 | return mem; |
| 564 | } |
| 565 | |
| 566 | static void rvfree(void *mem, unsigned long size) |
| 567 | { |
| 568 | unsigned long adr; |
| 569 | |
| 570 | if (!mem) |
| 571 | return; |
| 572 | adr = (unsigned long) mem; |
| 573 | while ((long) size > 0) { |
| 574 | ClearPageReserved(vmalloc_to_page((void *) adr)); |
| 575 | adr += PAGE_SIZE; |
| 576 | size -= PAGE_SIZE; |
| 577 | } |
| 578 | vfree(mem); |
| 579 | } |
| 580 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 581 | static __u32 get_v4l2_depth(__u32 pixfmt) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 582 | { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 583 | switch (pixfmt) { |
| 584 | case V4L2_PIX_FMT_BGR32: |
| 585 | case V4L2_PIX_FMT_RGB32: |
| 586 | return 32; |
| 587 | case V4L2_PIX_FMT_RGB24: /* 'RGB3' */ |
| 588 | case V4L2_PIX_FMT_BGR24: |
| 589 | return 24; |
| 590 | case V4L2_PIX_FMT_RGB565: /* 'RGBP' */ |
| 591 | case V4L2_PIX_FMT_YUYV: /* 'YUYV' packed 4.2.2 */ |
| 592 | case V4L2_PIX_FMT_YYUV: /* 'YYUV' */ |
| 593 | return 16; |
| 594 | case V4L2_PIX_FMT_YUV420: /* 'YU12' planar 4.2.0 */ |
| 595 | return 12; |
| 596 | case V4L2_PIX_FMT_MJPEG: |
| 597 | case V4L2_PIX_FMT_JPEG: |
| 598 | case V4L2_PIX_FMT_SBGGR8: /* 'BA81' Bayer */ |
| 599 | return 8; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 600 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 601 | PDEBUG(D_ERR|D_CONF, "Unknown pixel format %c%c%c%c", |
| 602 | pixfmt & 0xff, |
| 603 | (pixfmt >> 8) & 0xff, |
| 604 | (pixfmt >> 16) & 0xff, |
| 605 | pixfmt >> 24); |
| 606 | return -EINVAL; |
| 607 | } |
| 608 | |
| 609 | static int gspca_get_buff_size(struct gspca_dev *gspca_dev) |
| 610 | { |
| 611 | unsigned int size; |
| 612 | |
| 613 | size = gspca_dev->width * gspca_dev->height |
| 614 | * get_v4l2_depth(gspca_dev->pixfmt) / 8; |
| 615 | if (!size) |
| 616 | return -ENOMEM; |
| 617 | return size; |
| 618 | } |
| 619 | |
| 620 | static int frame_alloc(struct gspca_dev *gspca_dev, |
| 621 | unsigned int count) |
| 622 | { |
| 623 | struct gspca_frame *frame; |
| 624 | unsigned int frsz; |
| 625 | int i; |
| 626 | |
| 627 | frsz = gspca_get_buff_size(gspca_dev); |
| 628 | if (frsz < 0) |
| 629 | return frsz; |
| 630 | PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 631 | if (count > GSPCA_MAX_FRAMES) |
| 632 | count = GSPCA_MAX_FRAMES; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 633 | /* if compressed (JPEG), reduce the buffer size */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 634 | if (gspca_is_compressed(gspca_dev->pixfmt)) |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 635 | frsz = (frsz * comp_fac) / 100 + 600; /* plus JPEG header */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 636 | frsz = PAGE_ALIGN(frsz); |
| 637 | PDEBUG(D_STREAM, "new fr_sz: %d", frsz); |
| 638 | gspca_dev->frsz = frsz; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 639 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 640 | gspca_dev->frbuf = rvmalloc(frsz * count); |
| 641 | if (!gspca_dev->frbuf) { |
| 642 | err("frame alloc failed"); |
| 643 | return -ENOMEM; |
| 644 | } |
| 645 | } |
| 646 | gspca_dev->nframes = count; |
| 647 | for (i = 0; i < count; i++) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 648 | frame = &gspca_dev->frame[i]; |
| 649 | frame->v4l2_buf.index = i; |
| 650 | frame->v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 651 | frame->v4l2_buf.flags = 0; |
| 652 | frame->v4l2_buf.field = V4L2_FIELD_NONE; |
| 653 | frame->v4l2_buf.length = frsz; |
| 654 | frame->v4l2_buf.memory = gspca_dev->memory; |
| 655 | frame->v4l2_buf.sequence = 0; |
| 656 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) { |
| 657 | frame->data = frame->data_end = |
| 658 | gspca_dev->frbuf + i * frsz; |
| 659 | frame->v4l2_buf.m.offset = i * frsz; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 660 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 661 | } |
| 662 | gspca_dev->fr_i = gspca_dev->fr_o = gspca_dev->fr_q = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 663 | #ifdef GSPCA_HLP |
| 664 | { |
| 665 | struct hlp_dev *hlp_dev; |
| 666 | |
| 667 | hlp_dev = hlp; |
| 668 | if (hlp != 0 && hlp_dev->gspca_dev == gspca_dev) { |
| 669 | hlp_dev->fr_d = 0; |
| 670 | atomic_set(&hlp_dev->nevent, 0); |
| 671 | } |
| 672 | } |
| 673 | #endif /*GSPCA_HLP*/ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 674 | gspca_dev->last_packet_type = DISCARD_PACKET; |
| 675 | gspca_dev->sequence = 0; |
| 676 | atomic_set(&gspca_dev->nevent, 0); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 677 | return 0; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | static void frame_free(struct gspca_dev *gspca_dev) |
| 681 | { |
| 682 | int i; |
| 683 | |
| 684 | PDEBUG(D_STREAM, "frame free"); |
| 685 | if (gspca_dev->frbuf != 0) { |
| 686 | rvfree(gspca_dev->frbuf, |
| 687 | gspca_dev->nframes * gspca_dev->frsz); |
| 688 | gspca_dev->frbuf = NULL; |
| 689 | for (i = 0; i < gspca_dev->nframes; i++) |
| 690 | gspca_dev->frame[i].data = NULL; |
| 691 | } |
| 692 | gspca_dev->nframes = 0; |
| 693 | } |
| 694 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 695 | static void destroy_urbs(struct gspca_dev *gspca_dev) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 696 | { |
| 697 | struct urb *urb; |
| 698 | unsigned int i; |
| 699 | |
| 700 | PDEBUG(D_STREAM, "kill transfer"); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 701 | for (i = 0; i < MAX_NURBS; ++i) { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 702 | urb = gspca_dev->urb[i]; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 703 | if (urb == NULL) |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 704 | break; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 705 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 706 | gspca_dev->urb[i] = NULL; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 707 | usb_kill_urb(urb); |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 708 | if (urb->transfer_buffer != 0) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 709 | usb_buffer_free(gspca_dev->dev, |
| 710 | urb->transfer_buffer_length, |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 711 | urb->transfer_buffer, |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 712 | urb->transfer_dma); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 713 | usb_free_urb(urb); |
| 714 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 715 | } |
| 716 | |
| 717 | /* |
| 718 | * search an input isochronous endpoint in an alternate setting |
| 719 | */ |
| 720 | static struct usb_host_endpoint *alt_isoc(struct usb_host_interface *alt, |
| 721 | __u8 epaddr) |
| 722 | { |
| 723 | struct usb_host_endpoint *ep; |
| 724 | int i, attr; |
| 725 | |
| 726 | epaddr |= USB_DIR_IN; |
| 727 | for (i = 0; i < alt->desc.bNumEndpoints; i++) { |
| 728 | ep = &alt->endpoint[i]; |
| 729 | if (ep->desc.bEndpointAddress == epaddr) { |
| 730 | attr = ep->desc.bmAttributes |
| 731 | & USB_ENDPOINT_XFERTYPE_MASK; |
| 732 | if (attr == USB_ENDPOINT_XFER_ISOC) |
| 733 | return ep; |
| 734 | break; |
| 735 | } |
| 736 | } |
| 737 | return NULL; |
| 738 | } |
| 739 | |
| 740 | /* |
| 741 | * search an input isochronous endpoint |
| 742 | * |
| 743 | * The endpoint is defined by the subdriver. |
| 744 | * Use only the first isoc (some Zoran - 0x0572:0x0001 - have two such ep). |
| 745 | * This routine may be called many times when the bandwidth is too small |
| 746 | * (the bandwidth is checked on urb submit). |
| 747 | */ |
| 748 | struct usb_host_endpoint *get_isoc_ep(struct gspca_dev *gspca_dev) |
| 749 | { |
| 750 | struct usb_interface *intf; |
| 751 | struct usb_host_endpoint *ep; |
| 752 | int i, ret; |
| 753 | |
| 754 | intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); |
| 755 | i = gspca_dev->alt; /* previous alt setting */ |
| 756 | while (--i > 0) { /* alt 0 is unusable */ |
| 757 | ep = alt_isoc(&intf->altsetting[i], gspca_dev->cam.epaddr); |
| 758 | if (ep) |
| 759 | break; |
| 760 | } |
| 761 | if (i <= 0) { |
| 762 | err("no ISOC endpoint found"); |
| 763 | return NULL; |
| 764 | } |
| 765 | PDEBUG(D_STREAM, "use ISOC alt %d ep 0x%02x", |
| 766 | i, ep->desc.bEndpointAddress); |
| 767 | ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i); |
| 768 | if (ret < 0) { |
| 769 | err("set interface err %d", ret); |
| 770 | return NULL; |
| 771 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 772 | gspca_dev->alt = i; /* memorize the current alt setting */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 773 | return ep; |
| 774 | } |
| 775 | |
| 776 | /* |
| 777 | * create the isochronous URBs |
| 778 | */ |
| 779 | static int create_urbs(struct gspca_dev *gspca_dev, |
| 780 | struct usb_host_endpoint *ep) |
| 781 | { |
| 782 | struct urb *urb; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 783 | int n, nurbs, i, psize, npkt, bsize; |
| 784 | usb_complete_t usb_complete; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 785 | |
| 786 | /* calculate the packet size and the number of packets */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 787 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 788 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 789 | /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */ |
| 790 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); |
| 791 | npkt = ISO_MAX_SIZE / psize; |
| 792 | if (npkt > ISO_MAX_PKT) |
| 793 | npkt = ISO_MAX_PKT; |
| 794 | bsize = psize * npkt; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 795 | PDEBUG(D_STREAM, |
| 796 | "isoc %d pkts size %d (bsize:%d)", npkt, psize, bsize); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 797 | /*fixme:change for userptr*/ |
| 798 | /*fixme:don't submit all URBs when userptr*/ |
| 799 | gspca_dev->nurbs = nurbs = DEF_NURBS; |
| 800 | if (gspca_dev->memory == V4L2_MEMORY_MMAP) |
| 801 | usb_complete = isoc_irq_mmap; |
| 802 | else |
| 803 | usb_complete = isoc_irq_user; |
| 804 | for (n = 0; n < nurbs; n++) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 805 | urb = usb_alloc_urb(npkt, GFP_KERNEL); |
| 806 | if (!urb) { |
| 807 | err("usb_alloc_urb failed"); |
| 808 | return -ENOMEM; |
| 809 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 810 | urb->transfer_buffer = usb_buffer_alloc(gspca_dev->dev, |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 811 | bsize, |
| 812 | GFP_KERNEL, |
| 813 | &urb->transfer_dma); |
| 814 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 815 | if (urb->transfer_buffer == NULL) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 816 | usb_free_urb(urb); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 817 | destroy_urbs(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 818 | err("usb_buffer_urb failed"); |
| 819 | return -ENOMEM; |
| 820 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 821 | gspca_dev->urb[n] = urb; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 822 | urb->dev = gspca_dev->dev; |
| 823 | urb->context = gspca_dev; |
| 824 | urb->pipe = usb_rcvisocpipe(gspca_dev->dev, |
| 825 | ep->desc.bEndpointAddress); |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 826 | urb->transfer_flags = URB_ISO_ASAP |
| 827 | | URB_NO_TRANSFER_DMA_MAP; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 828 | urb->interval = ep->desc.bInterval; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 829 | urb->complete = usb_complete; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 830 | urb->number_of_packets = npkt; |
| 831 | urb->transfer_buffer_length = bsize; |
| 832 | for (i = 0; i < npkt; i++) { |
| 833 | urb->iso_frame_desc[i].length = psize; |
| 834 | urb->iso_frame_desc[i].offset = psize * i; |
| 835 | } |
| 836 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 837 | gspca_dev->urb_in = gspca_dev->urb_out = 0; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | /* |
| 842 | * start the USB transfer |
| 843 | */ |
| 844 | static int gspca_init_transfer(struct gspca_dev *gspca_dev) |
| 845 | { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 846 | struct usb_host_endpoint *ep; |
| 847 | int n, ret; |
| 848 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 849 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
| 850 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 851 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 852 | /* set the higher alternate setting and |
| 853 | * loop until urb submit succeeds */ |
| 854 | gspca_dev->alt = gspca_dev->nbalt; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 855 | for (;;) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 856 | PDEBUG(D_STREAM, "init transfer alt %d", gspca_dev->alt); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 857 | ep = get_isoc_ep(gspca_dev); |
| 858 | if (ep == NULL) { |
| 859 | ret = -EIO; |
| 860 | goto out; |
| 861 | } |
| 862 | ret = create_urbs(gspca_dev, ep); |
| 863 | if (ret < 0) |
| 864 | goto out; |
| 865 | |
| 866 | /* start the cam */ |
| 867 | gspca_dev->sd_desc->start(gspca_dev); |
| 868 | gspca_dev->streaming = 1; |
| 869 | atomic_set(&gspca_dev->nevent, 0); |
| 870 | |
| 871 | /* submit the URBs */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 872 | for (n = 0; n < gspca_dev->nurbs; n++) { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 873 | ret = usb_submit_urb(gspca_dev->urb[n], GFP_KERNEL); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 874 | if (ret < 0) { |
| 875 | PDEBUG(D_ERR|D_STREAM, |
| 876 | "usb_submit_urb [%d] err %d", n, ret); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 877 | gspca_dev->streaming = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 878 | destroy_urbs(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 879 | if (ret == -ENOSPC) |
| 880 | break; /* try the previous alt */ |
| 881 | goto out; |
| 882 | } |
| 883 | } |
| 884 | if (ret >= 0) |
| 885 | break; |
| 886 | } |
| 887 | out: |
| 888 | mutex_unlock(&gspca_dev->usb_lock); |
| 889 | return ret; |
| 890 | } |
| 891 | |
| 892 | static int gspca_set_alt0(struct gspca_dev *gspca_dev) |
| 893 | { |
| 894 | int ret; |
| 895 | |
| 896 | ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0); |
| 897 | if (ret < 0) |
| 898 | PDEBUG(D_ERR|D_STREAM, "set interface 0 err %d", ret); |
| 899 | return ret; |
| 900 | } |
| 901 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 902 | /* Note both the queue and the usb lock should be hold when calling this */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 903 | static void gspca_stream_off(struct gspca_dev *gspca_dev) |
| 904 | { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 905 | gspca_dev->streaming = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 906 | atomic_set(&gspca_dev->nevent, 0); |
| 907 | #ifdef GSPCA_HLP |
| 908 | { |
| 909 | struct hlp_dev *hlp_dev; |
| 910 | |
| 911 | hlp_dev = hlp; |
| 912 | if (hlp_dev != 0 |
| 913 | && hlp_dev->gspca_dev == gspca_dev) |
| 914 | atomic_set(&hlp_dev->nevent, 0); |
| 915 | } |
| 916 | #endif |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 917 | if (gspca_dev->present) { |
| 918 | gspca_dev->sd_desc->stopN(gspca_dev); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 919 | destroy_urbs(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 920 | gspca_set_alt0(gspca_dev); |
| 921 | gspca_dev->sd_desc->stop0(gspca_dev); |
| 922 | PDEBUG(D_STREAM, "stream off OK"); |
| 923 | } else { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 924 | destroy_urbs(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 925 | atomic_inc(&gspca_dev->nevent); |
| 926 | wake_up_interruptible(&gspca_dev->wq); |
| 927 | PDEBUG(D_ERR|D_STREAM, "stream off no device ??"); |
| 928 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 929 | } |
| 930 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 931 | static void gspca_set_default_mode(struct gspca_dev *gspca_dev) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 932 | { |
| 933 | int i; |
| 934 | |
| 935 | i = gspca_dev->cam.nmodes - 1; /* take the highest mode */ |
| 936 | gspca_dev->curr_mode = i; |
| 937 | gspca_dev->width = gspca_dev->cam.cam_mode[i].width; |
| 938 | gspca_dev->height = gspca_dev->cam.cam_mode[i].height; |
| 939 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 940 | } |
| 941 | |
| 942 | static int wxh_to_mode(struct gspca_dev *gspca_dev, |
| 943 | int width, int height) |
| 944 | { |
| 945 | int i; |
| 946 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 947 | for (i = gspca_dev->cam.nmodes; --i > 0; ) { |
| 948 | if (width >= gspca_dev->cam.cam_mode[i].width |
| 949 | && height >= gspca_dev->cam.cam_mode[i].height) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 950 | break; |
| 951 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 952 | return i; |
| 953 | } |
| 954 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 955 | /* |
| 956 | * search a mode with the right pixel format |
| 957 | */ |
| 958 | static int gspca_get_mode(struct gspca_dev *gspca_dev, |
| 959 | int mode, |
| 960 | int pixfmt) |
| 961 | { |
| 962 | int modeU, modeD; |
| 963 | |
| 964 | modeU = modeD = mode; |
| 965 | while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) { |
| 966 | if (--modeD >= 0) { |
| 967 | if (gspca_dev->cam.cam_mode[modeD].pixfmt == pixfmt) |
| 968 | return modeD; |
| 969 | } |
| 970 | if (++modeU < gspca_dev->cam.nmodes) { |
| 971 | if (gspca_dev->cam.cam_mode[modeU].pixfmt == pixfmt) |
| 972 | return modeU; |
| 973 | } |
| 974 | } |
| 975 | return -EINVAL; |
| 976 | } |
| 977 | |
| 978 | static int vidioc_enum_fmt_cap(struct file *file, void *priv, |
| 979 | struct v4l2_fmtdesc *fmtdesc) |
| 980 | { |
| 981 | struct gspca_dev *gspca_dev = priv; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 982 | int i; |
| 983 | #ifndef GSPCA_HLP |
| 984 | int j, index; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 985 | __u32 fmt_tb[8]; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 986 | #endif |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 987 | |
| 988 | PDEBUG(D_CONF, "enum fmt cap"); |
| 989 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 990 | #ifndef GSPCA_HLP |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 991 | /* give an index to each format */ |
| 992 | index = 0; |
| 993 | j = 0; |
| 994 | for (i = gspca_dev->cam.nmodes; --i >= 0; ) { |
| 995 | fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixfmt; |
| 996 | j = 0; |
| 997 | for (;;) { |
| 998 | if (fmt_tb[j] == fmt_tb[index]) |
| 999 | break; |
| 1000 | j++; |
| 1001 | } |
| 1002 | if (j == index) { |
| 1003 | if (fmtdesc->index == index) |
| 1004 | break; /* new format */ |
| 1005 | index++; |
| 1006 | if (index >= sizeof fmt_tb / sizeof fmt_tb[0]) |
| 1007 | return -EINVAL; |
| 1008 | } |
| 1009 | } |
| 1010 | if (i < 0) |
| 1011 | return -EINVAL; /* no more format */ |
| 1012 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1013 | fmtdesc->pixelformat = fmt_tb[index]; |
| 1014 | if (gspca_is_compressed(fmt_tb[index])) |
| 1015 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1016 | #else /*GSPCA_HLP*/ |
| 1017 | /* !! code tied to the decoding functions in decoder.c */ |
| 1018 | i = gspca_dev->cam.nmodes - 1; |
| 1019 | if (fmtdesc->index == 0) { /* (assume one format per subdriver) */ |
| 1020 | fmtdesc->pixelformat = gspca_dev->cam.cam_mode[i].pixfmt; |
| 1021 | if (gspca_is_compressed(fmtdesc->pixelformat)) |
| 1022 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; |
| 1023 | } else { |
| 1024 | if (hlp == 0 |
| 1025 | || (hlp->gspca_dev != 0 |
| 1026 | && hlp->gspca_dev != gspca_dev)) |
| 1027 | return -EINVAL; |
| 1028 | switch (gspca_dev->cam.cam_mode[i].pixfmt) { |
| 1029 | case V4L2_PIX_FMT_JPEG: |
| 1030 | if (fmtdesc->index >= sizeof jpeg_to_tb |
| 1031 | / sizeof jpeg_to_tb[0]) |
| 1032 | return -EINVAL; |
| 1033 | fmtdesc->pixelformat = jpeg_to_tb[fmtdesc->index]; |
| 1034 | break; |
| 1035 | case V4L2_PIX_FMT_SBGGR8: |
| 1036 | if (fmtdesc->index >= sizeof bayer_to_tb |
| 1037 | / sizeof bayer_to_tb[0]) |
| 1038 | return -EINVAL; |
| 1039 | fmtdesc->pixelformat = bayer_to_tb[fmtdesc->index]; |
| 1040 | break; |
| 1041 | default: |
| 1042 | return -EINVAL; |
| 1043 | } |
| 1044 | } |
| 1045 | #endif /*GSPCA_HLP*/ |
| 1046 | fmtdesc->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1047 | fmtdesc->description[0] = fmtdesc->pixelformat & 0xff; |
| 1048 | fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff; |
| 1049 | fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff; |
| 1050 | fmtdesc->description[3] = fmtdesc->pixelformat >> 24; |
| 1051 | fmtdesc->description[4] = '\0'; |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1055 | static int vidioc_g_fmt_cap(struct file *file, void *priv, |
| 1056 | struct v4l2_format *fmt) |
| 1057 | { |
| 1058 | struct gspca_dev *gspca_dev = priv; |
| 1059 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1060 | #ifdef GSPCA_HLP |
| 1061 | int i; |
| 1062 | |
| 1063 | /* if the pixel format is not the one of the device and |
| 1064 | * if the helper is inactive or busy, restore */ |
| 1065 | i = gspca_dev->curr_mode; |
| 1066 | if (gspca_dev->pixfmt != gspca_dev->cam.cam_mode[i].pixfmt) { |
| 1067 | struct hlp_dev *hlp_dev; |
| 1068 | |
| 1069 | hlp_dev = hlp; |
| 1070 | if (hlp_dev == 0 || hlp_dev->gspca_dev != gspca_dev) |
| 1071 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixfmt; |
| 1072 | } |
| 1073 | #endif /*GSPCA_HLP*/ |
| 1074 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1075 | fmt->fmt.pix.width = gspca_dev->width; |
| 1076 | fmt->fmt.pix.height = gspca_dev->height; |
| 1077 | fmt->fmt.pix.pixelformat = gspca_dev->pixfmt; |
| 1078 | #ifdef GSPCA_DEBUG |
| 1079 | if (gspca_debug & D_CONF) { |
| 1080 | PDEBUG_MODE("get fmt cap", |
| 1081 | fmt->fmt.pix.pixelformat, |
| 1082 | fmt->fmt.pix.width, |
| 1083 | fmt->fmt.pix.height); |
| 1084 | } |
| 1085 | #endif |
| 1086 | fmt->fmt.pix.field = V4L2_FIELD_NONE; |
| 1087 | fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat) |
| 1088 | * fmt->fmt.pix.width / 8; |
| 1089 | fmt->fmt.pix.sizeimage = fmt->fmt.pix.bytesperline |
| 1090 | * fmt->fmt.pix.height; |
| 1091 | /* (should be in the subdriver) */ |
| 1092 | fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB; |
| 1093 | fmt->fmt.pix.priv = 0; |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1097 | static int try_fmt_cap(struct gspca_dev *gspca_dev, |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1098 | struct v4l2_format *fmt) |
| 1099 | { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1100 | int w, h, mode, mode2, frsz; |
| 1101 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1102 | w = fmt->fmt.pix.width; |
| 1103 | h = fmt->fmt.pix.height; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1104 | |
| 1105 | /* (luvcview problem) */ |
| 1106 | if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) |
| 1107 | fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_JPEG; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1108 | #ifdef GSPCA_DEBUG |
| 1109 | if (gspca_debug & D_CONF) |
| 1110 | PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h); |
| 1111 | #endif |
| 1112 | /* search the closest mode for width and height */ |
| 1113 | mode = wxh_to_mode(gspca_dev, w, h); |
| 1114 | |
| 1115 | /* OK if right palette */ |
| 1116 | if (gspca_dev->cam.cam_mode[mode].pixfmt != fmt->fmt.pix.pixelformat) { |
| 1117 | |
| 1118 | /* else, search the closest mode with the same pixel format */ |
| 1119 | mode2 = gspca_get_mode(gspca_dev, mode, |
| 1120 | fmt->fmt.pix.pixelformat); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1121 | if (mode2 >= 0) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1122 | mode = mode2; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1123 | } else { |
| 1124 | __u32 pixfmt; |
| 1125 | |
| 1126 | pixfmt = gspca_dev->cam.cam_mode[mode].pixfmt; |
| 1127 | #ifndef GSPCA_HLP |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1128 | |
| 1129 | /* no chance, return this mode */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1130 | fmt->fmt.pix.pixelformat = pixfmt; |
| 1131 | #else /*GSPCA_HLP*/ |
| 1132 | if (hlp != 0 |
| 1133 | && (hlp->gspca_dev == 0 |
| 1134 | || hlp->gspca_dev == gspca_dev) |
| 1135 | /* decoding works for JPEG and Bayer only */ |
| 1136 | && (pixfmt == V4L2_PIX_FMT_JPEG |
| 1137 | || pixfmt == V4L2_PIX_FMT_SBGGR8)) { |
| 1138 | switch (fmt->fmt.pix.pixelformat) { |
| 1139 | case V4L2_PIX_FMT_YUYV: /* 'YUYV' */ |
| 1140 | case V4L2_PIX_FMT_BGR24: /* 'BGR3' */ |
| 1141 | case V4L2_PIX_FMT_RGB24: /* 'RGB3' */ |
| 1142 | case V4L2_PIX_FMT_YUV420: /* 'YU12' */ |
| 1143 | case V4L2_PIX_FMT_RGB565: /* 'RGBP' */ |
| 1144 | break; |
| 1145 | default: { |
| 1146 | /* return any of the supported fmt's */ |
| 1147 | __u8 u; |
| 1148 | |
| 1149 | u = get_jiffies_64(); |
| 1150 | u %= sizeof bayer_to_tb |
| 1151 | / sizeof bayer_to_tb[0] - 1; |
| 1152 | fmt->fmt.pix.pixelformat = |
| 1153 | bayer_to_tb[u + 1]; |
| 1154 | break; |
| 1155 | } |
| 1156 | } |
| 1157 | } else { |
| 1158 | fmt->fmt.pix.pixelformat = pixfmt; |
| 1159 | } |
| 1160 | #endif /*GSPCA_HLP*/ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1161 | #ifdef GSPCA_DEBUG |
| 1162 | if (gspca_debug & D_CONF) { |
| 1163 | PDEBUG_MODE("new format", |
| 1164 | fmt->fmt.pix.pixelformat, |
| 1165 | gspca_dev->cam.cam_mode[mode].width, |
| 1166 | gspca_dev->cam.cam_mode[mode].height); |
| 1167 | } |
| 1168 | #endif |
| 1169 | } |
| 1170 | } |
| 1171 | fmt->fmt.pix.width = gspca_dev->cam.cam_mode[mode].width; |
| 1172 | fmt->fmt.pix.height = gspca_dev->cam.cam_mode[mode].height; |
| 1173 | fmt->fmt.pix.bytesperline = get_v4l2_depth(fmt->fmt.pix.pixelformat) |
| 1174 | * fmt->fmt.pix.width / 8; |
| 1175 | frsz = fmt->fmt.pix.bytesperline * fmt->fmt.pix.height; |
| 1176 | if (gspca_is_compressed(fmt->fmt.pix.pixelformat)) |
| 1177 | frsz = (frsz * comp_fac) / 100; |
| 1178 | fmt->fmt.pix.sizeimage = frsz; |
| 1179 | return mode; /* used when s_fmt */ |
| 1180 | } |
| 1181 | |
| 1182 | static int vidioc_try_fmt_cap(struct file *file, |
| 1183 | void *priv, |
| 1184 | struct v4l2_format *fmt) |
| 1185 | { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1186 | struct gspca_dev *gspca_dev = priv; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1187 | int ret; |
| 1188 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1189 | ret = try_fmt_cap(gspca_dev, fmt); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1190 | if (ret < 0) |
| 1191 | return ret; |
| 1192 | return 0; |
| 1193 | } |
| 1194 | |
| 1195 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
| 1196 | struct v4l2_format *fmt) |
| 1197 | { |
| 1198 | struct gspca_dev *gspca_dev = priv; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1199 | int ret; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1200 | |
| 1201 | #ifdef GSPCA_DEBUG |
| 1202 | if (gspca_debug & D_CONF) { |
| 1203 | PDEBUG_MODE("set fmt cap", |
| 1204 | fmt->fmt.pix.pixelformat, |
| 1205 | fmt->fmt.pix.width, fmt->fmt.pix.height); |
| 1206 | } |
| 1207 | #endif |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1208 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1209 | return -ERESTARTSYS; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1210 | |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1211 | ret = try_fmt_cap(gspca_dev, fmt); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1212 | if (ret < 0) |
| 1213 | goto out; |
| 1214 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1215 | if (gspca_dev->nframes != 0 |
| 1216 | && fmt->fmt.pix.sizeimage > gspca_dev->frsz) { |
| 1217 | ret = -EINVAL; |
| 1218 | goto out; |
| 1219 | } |
| 1220 | |
| 1221 | #ifndef GSPCA_HLP |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1222 | if (ret == gspca_dev->curr_mode) |
| 1223 | goto out; /* same mode */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1224 | #else /*GSPCA_HLP*/ |
| 1225 | if (ret == gspca_dev->curr_mode |
| 1226 | && gspca_dev->pixfmt == fmt->fmt.pix.pixelformat) |
| 1227 | goto out; /* same mode */ |
| 1228 | #endif /*GSPCA_HLP*/ |
| 1229 | |
| 1230 | if (gspca_dev->streaming) { |
| 1231 | ret = -EBUSY; |
| 1232 | goto out; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1233 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1234 | gspca_dev->width = fmt->fmt.pix.width; |
| 1235 | gspca_dev->height = fmt->fmt.pix.height; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1236 | gspca_dev->pixfmt = fmt->fmt.pix.pixelformat; |
| 1237 | gspca_dev->curr_mode = ret; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1238 | |
| 1239 | #ifdef GSPCA_HLP |
| 1240 | /* if frame decoding is required */ |
| 1241 | if (gspca_dev->pixfmt != gspca_dev->cam.cam_mode[ret].pixfmt) { |
| 1242 | struct hlp_dev *hlp_dev; |
| 1243 | |
| 1244 | hlp_dev = hlp; |
| 1245 | if (hlp_dev == 0 |
| 1246 | || (hlp_dev->gspca_dev != 0 |
| 1247 | && hlp_dev->gspca_dev != gspca_dev)) { /* helper busy */ |
| 1248 | fmt->fmt.pix.pixelformat = |
| 1249 | gspca_dev->pixfmt = |
| 1250 | gspca_dev->cam.cam_mode[ret].pixfmt; |
| 1251 | } else { /* helper active */ |
| 1252 | hlp_dev->gspca_dev = gspca_dev; |
| 1253 | hlp_dev->pixfmt = gspca_dev->cam.cam_mode[ret].pixfmt; |
| 1254 | hlp_dev->fr_d = gspca_dev->fr_i; |
| 1255 | } |
| 1256 | } else if (hlp != 0 && hlp->gspca_dev == gspca_dev) |
| 1257 | hlp->gspca_dev = 0; |
| 1258 | #endif /*GSPCA_HLP*/ |
| 1259 | ret = 0; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1260 | out: |
| 1261 | mutex_unlock(&gspca_dev->queue_lock); |
| 1262 | return ret; |
| 1263 | } |
| 1264 | |
| 1265 | static int dev_open(struct inode *inode, struct file *file) |
| 1266 | { |
| 1267 | struct gspca_dev *gspca_dev; |
| 1268 | int ret; |
| 1269 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1270 | PDEBUG(D_STREAM, "%s open", current->comm); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1271 | gspca_dev = (struct gspca_dev *) video_devdata(file); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1272 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1273 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1274 | if (!gspca_dev->present) { |
| 1275 | ret = -ENODEV; |
| 1276 | goto out; |
| 1277 | } |
| 1278 | |
| 1279 | /* if not done yet, initialize the sensor */ |
| 1280 | if (gspca_dev->users == 0) { |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1281 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { |
| 1282 | ret = -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1283 | goto out; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1284 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1285 | ret = gspca_dev->sd_desc->open(gspca_dev); |
| 1286 | mutex_unlock(&gspca_dev->usb_lock); |
| 1287 | if (ret != 0) { |
| 1288 | PDEBUG(D_ERR|D_CONF, "init device failed %d", ret); |
| 1289 | goto out; |
| 1290 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1291 | } else if (gspca_dev->users > 4) { /* (arbitrary value) */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1292 | ret = -EBUSY; |
| 1293 | goto out; |
| 1294 | } |
| 1295 | gspca_dev->users++; |
| 1296 | file->private_data = gspca_dev; |
| 1297 | #ifdef GSPCA_DEBUG |
| 1298 | /* activate the v4l2 debug */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1299 | if (gspca_debug & D_V4L2) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1300 | gspca_dev->vdev.debug |= 3; |
| 1301 | else |
| 1302 | gspca_dev->vdev.debug &= ~3; |
| 1303 | #endif |
| 1304 | out: |
| 1305 | mutex_unlock(&gspca_dev->queue_lock); |
| 1306 | if (ret != 0) |
| 1307 | PDEBUG(D_ERR|D_STREAM, "open failed err %d", ret); |
| 1308 | else |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1309 | PDEBUG(D_STREAM, "open done"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1310 | return ret; |
| 1311 | } |
| 1312 | |
| 1313 | static int dev_close(struct inode *inode, struct file *file) |
| 1314 | { |
| 1315 | struct gspca_dev *gspca_dev = file->private_data; |
| 1316 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1317 | PDEBUG(D_STREAM, "%s close", current->comm); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1318 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1319 | return -ERESTARTSYS; |
| 1320 | gspca_dev->users--; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1321 | |
| 1322 | /* if the file did capture, free the streaming resources */ |
| 1323 | if (gspca_dev->capt_file == file) { |
| 1324 | mutex_lock(&gspca_dev->usb_lock); |
| 1325 | if (gspca_dev->streaming) |
| 1326 | gspca_stream_off(gspca_dev); |
| 1327 | gspca_dev->sd_desc->close(gspca_dev); |
| 1328 | mutex_unlock(&gspca_dev->usb_lock); |
| 1329 | frame_free(gspca_dev); |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1330 | gspca_dev->capt_file = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1331 | gspca_dev->memory = GSPCA_MEMORY_NO; |
| 1332 | #ifdef GSPCA_HLP |
| 1333 | { |
| 1334 | struct hlp_dev *hlp_dev; |
| 1335 | int mode; |
| 1336 | |
| 1337 | hlp_dev = hlp; |
| 1338 | if (hlp_dev != 0 |
| 1339 | && hlp_dev->gspca_dev == gspca_dev) { |
| 1340 | hlp_dev->gspca_dev = 0; |
| 1341 | hlp_dev->frame = 0; |
| 1342 | mode = gspca_dev->curr_mode; |
| 1343 | gspca_dev->pixfmt = |
| 1344 | gspca_dev->cam.cam_mode[mode].pixfmt; |
| 1345 | } |
| 1346 | } |
| 1347 | #endif /*GSPCA_HLP*/ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1348 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1349 | file->private_data = NULL; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1350 | mutex_unlock(&gspca_dev->queue_lock); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1351 | PDEBUG(D_STREAM, "close done"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1352 | return 0; |
| 1353 | } |
| 1354 | |
| 1355 | static int vidioc_querycap(struct file *file, void *priv, |
| 1356 | struct v4l2_capability *cap) |
| 1357 | { |
| 1358 | struct gspca_dev *gspca_dev = priv; |
| 1359 | |
| 1360 | PDEBUG(D_CONF, "querycap"); |
| 1361 | memset(cap, 0, sizeof *cap); |
| 1362 | strncpy(cap->driver, gspca_dev->sd_desc->name, sizeof cap->driver); |
| 1363 | strncpy(cap->card, gspca_dev->cam.dev_name, sizeof cap->card); |
| 1364 | strncpy(cap->bus_info, gspca_dev->dev->bus->bus_name, |
| 1365 | sizeof cap->bus_info); |
| 1366 | cap->version = DRIVER_VERSION_NUMBER; |
| 1367 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
| 1368 | | V4L2_CAP_STREAMING |
| 1369 | | V4L2_CAP_READWRITE; |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
| 1373 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 1374 | struct v4l2_queryctrl *q_ctrl) |
| 1375 | { |
| 1376 | struct gspca_dev *gspca_dev = priv; |
| 1377 | int i; |
| 1378 | |
| 1379 | PDEBUG(D_CONF, "queryctrl"); |
| 1380 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { |
| 1381 | if (q_ctrl->id == gspca_dev->sd_desc->ctrls[i].qctrl.id) { |
| 1382 | memcpy(q_ctrl, |
| 1383 | &gspca_dev->sd_desc->ctrls[i].qctrl, |
| 1384 | sizeof *q_ctrl); |
| 1385 | return 0; |
| 1386 | } |
| 1387 | } |
| 1388 | if (q_ctrl->id >= V4L2_CID_BASE |
| 1389 | && q_ctrl->id <= V4L2_CID_LASTP1) { |
| 1390 | q_ctrl->flags |= V4L2_CTRL_FLAG_DISABLED; |
| 1391 | return 0; |
| 1392 | } |
| 1393 | return -EINVAL; |
| 1394 | } |
| 1395 | |
| 1396 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 1397 | struct v4l2_control *ctrl) |
| 1398 | { |
| 1399 | struct gspca_dev *gspca_dev = priv; |
| 1400 | struct ctrl *ctrls; |
| 1401 | int i, ret; |
| 1402 | |
| 1403 | PDEBUG(D_CONF, "set ctrl"); |
| 1404 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; |
| 1405 | i < gspca_dev->sd_desc->nctrls; |
| 1406 | i++, ctrls++) { |
| 1407 | if (ctrl->id != ctrls->qctrl.id) |
| 1408 | continue; |
| 1409 | if (ctrl->value < ctrls->qctrl.minimum |
| 1410 | && ctrl->value > ctrls->qctrl.maximum) |
| 1411 | return -ERANGE; |
| 1412 | PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1413 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
| 1414 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1415 | ret = ctrls->set(gspca_dev, ctrl->value); |
| 1416 | mutex_unlock(&gspca_dev->usb_lock); |
| 1417 | return ret; |
| 1418 | } |
| 1419 | return -EINVAL; |
| 1420 | } |
| 1421 | |
| 1422 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 1423 | struct v4l2_control *ctrl) |
| 1424 | { |
| 1425 | struct gspca_dev *gspca_dev = priv; |
| 1426 | |
| 1427 | struct ctrl *ctrls; |
| 1428 | int i, ret; |
| 1429 | |
| 1430 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; |
| 1431 | i < gspca_dev->sd_desc->nctrls; |
| 1432 | i++, ctrls++) { |
| 1433 | if (ctrl->id != ctrls->qctrl.id) |
| 1434 | continue; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1435 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
| 1436 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1437 | ret = ctrls->get(gspca_dev, &ctrl->value); |
| 1438 | mutex_unlock(&gspca_dev->usb_lock); |
| 1439 | return ret; |
| 1440 | } |
| 1441 | return -EINVAL; |
| 1442 | } |
| 1443 | |
| 1444 | static int vidioc_querymenu(struct file *file, void *priv, |
| 1445 | struct v4l2_querymenu *qmenu) |
| 1446 | { |
| 1447 | struct gspca_dev *gspca_dev = priv; |
| 1448 | |
| 1449 | if (!gspca_dev->sd_desc->querymenu) |
| 1450 | return -EINVAL; |
| 1451 | return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu); |
| 1452 | } |
| 1453 | |
| 1454 | static int vidioc_enum_input(struct file *file, void *priv, |
| 1455 | struct v4l2_input *input) |
| 1456 | { |
| 1457 | struct gspca_dev *gspca_dev = priv; |
| 1458 | |
| 1459 | if (input->index != 0) |
| 1460 | return -EINVAL; |
| 1461 | memset(input, 0, sizeof *input); |
| 1462 | input->type = V4L2_INPUT_TYPE_CAMERA; |
| 1463 | strncpy(input->name, gspca_dev->sd_desc->name, |
| 1464 | sizeof input->name); |
| 1465 | return 0; |
| 1466 | } |
| 1467 | |
| 1468 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
| 1469 | { |
| 1470 | *i = 0; |
| 1471 | return 0; |
| 1472 | } |
| 1473 | |
| 1474 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
| 1475 | { |
| 1476 | if (i > 0) |
| 1477 | return -EINVAL; |
| 1478 | return (0); |
| 1479 | } |
| 1480 | |
| 1481 | static int vidioc_reqbufs(struct file *file, void *priv, |
| 1482 | struct v4l2_requestbuffers *rb) |
| 1483 | { |
| 1484 | struct gspca_dev *gspca_dev = priv; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1485 | int i, ret = 0; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1486 | |
| 1487 | PDEBUG(D_STREAM, "reqbufs %d", rb->count); |
| 1488 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1489 | return -EINVAL; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1490 | switch (rb->memory) { |
| 1491 | case V4L2_MEMORY_MMAP: |
| 1492 | break; |
| 1493 | case V4L2_MEMORY_USERPTR: |
| 1494 | #ifdef GSPCA_HLP |
| 1495 | if (hlp == 0 || hlp->gspca_dev != gspca_dev) |
| 1496 | break; |
| 1497 | #endif |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1498 | return -EINVAL; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1499 | default: |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1500 | return -EINVAL; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1501 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1502 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1503 | return -ERESTARTSYS; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1504 | |
| 1505 | for (i = 0; i < gspca_dev->nframes; i++) { |
| 1506 | if (gspca_dev->frame[i].vma_use_count) { |
| 1507 | ret = -EBUSY; |
| 1508 | goto out; |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | /* only one file may do capture */ |
| 1513 | if ((gspca_dev->capt_file != 0 && gspca_dev->capt_file != file) |
| 1514 | || gspca_dev->streaming) { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1515 | ret = -EBUSY; |
| 1516 | goto out; |
| 1517 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1518 | |
| 1519 | if (rb->count == 0) { /* unrequest? */ |
| 1520 | frame_free(gspca_dev); |
| 1521 | gspca_dev->capt_file = 0; |
| 1522 | } else { |
| 1523 | gspca_dev->memory = rb->memory; |
| 1524 | ret = frame_alloc(gspca_dev, rb->count); |
| 1525 | if (ret == 0) { |
| 1526 | rb->count = gspca_dev->nframes; |
| 1527 | gspca_dev->capt_file = file; |
| 1528 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1529 | } |
| 1530 | out: |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1531 | mutex_unlock(&gspca_dev->queue_lock); |
| 1532 | PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count); |
| 1533 | return ret; |
| 1534 | } |
| 1535 | |
| 1536 | static int vidioc_querybuf(struct file *file, void *priv, |
| 1537 | struct v4l2_buffer *v4l2_buf) |
| 1538 | { |
| 1539 | struct gspca_dev *gspca_dev = priv; |
| 1540 | struct gspca_frame *frame; |
| 1541 | |
| 1542 | PDEBUG(D_STREAM, "querybuf"); |
| 1543 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
| 1544 | || v4l2_buf->index < 0 |
| 1545 | || v4l2_buf->index >= gspca_dev->nframes) |
| 1546 | return -EINVAL; |
| 1547 | |
| 1548 | frame = &gspca_dev->frame[v4l2_buf->index]; |
| 1549 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); |
| 1550 | return 0; |
| 1551 | } |
| 1552 | |
| 1553 | static int vidioc_streamon(struct file *file, void *priv, |
| 1554 | enum v4l2_buf_type buf_type) |
| 1555 | { |
| 1556 | struct gspca_dev *gspca_dev = priv; |
| 1557 | int ret; |
| 1558 | |
| 1559 | PDEBUG(D_STREAM, "stream on"); |
| 1560 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1561 | return -EINVAL; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1562 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1563 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1564 | if (!gspca_dev->present) { |
| 1565 | ret = -ENODEV; |
| 1566 | goto out; |
| 1567 | } |
| 1568 | if (gspca_dev->nframes == 0) { |
| 1569 | ret = -EINVAL; |
| 1570 | goto out; |
| 1571 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1572 | if (gspca_dev->capt_file != file) { |
| 1573 | ret = -EINVAL; |
| 1574 | goto out; |
| 1575 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1576 | if (!gspca_dev->streaming) { |
| 1577 | ret = gspca_init_transfer(gspca_dev); |
| 1578 | if (ret < 0) |
| 1579 | goto out; |
| 1580 | } |
| 1581 | #ifdef GSPCA_DEBUG |
| 1582 | if (gspca_debug & D_STREAM) { |
| 1583 | PDEBUG_MODE("stream on OK", |
| 1584 | gspca_dev->pixfmt, |
| 1585 | gspca_dev->width, |
| 1586 | gspca_dev->height); |
| 1587 | } |
| 1588 | #endif |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1589 | ret = 0; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1590 | out: |
| 1591 | mutex_unlock(&gspca_dev->queue_lock); |
| 1592 | return ret; |
| 1593 | } |
| 1594 | |
| 1595 | static int vidioc_streamoff(struct file *file, void *priv, |
| 1596 | enum v4l2_buf_type buf_type) |
| 1597 | { |
| 1598 | struct gspca_dev *gspca_dev = priv; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1599 | int ret; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1600 | |
| 1601 | PDEBUG(D_STREAM, "stream off"); |
| 1602 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1603 | return -EINVAL; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1604 | if (!gspca_dev->streaming) |
| 1605 | return 0; |
| 1606 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1607 | return -ERESTARTSYS; |
| 1608 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { |
| 1609 | ret = -ERESTARTSYS; |
| 1610 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1611 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1612 | if (gspca_dev->capt_file != file) { |
| 1613 | ret = -EINVAL; |
| 1614 | goto out2; |
| 1615 | } |
| 1616 | gspca_stream_off(gspca_dev); |
| 1617 | ret = 0; |
| 1618 | out2: |
| 1619 | mutex_unlock(&gspca_dev->usb_lock); |
| 1620 | out: |
| 1621 | mutex_unlock(&gspca_dev->queue_lock); |
| 1622 | return ret; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1623 | } |
| 1624 | |
| 1625 | static int vidioc_g_jpegcomp(struct file *file, void *priv, |
| 1626 | struct v4l2_jpegcompression *jpegcomp) |
| 1627 | { |
| 1628 | struct gspca_dev *gspca_dev = priv; |
| 1629 | int ret; |
| 1630 | |
| 1631 | if (!gspca_dev->sd_desc->get_jcomp) |
| 1632 | return -EINVAL; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1633 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
| 1634 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1635 | ret = gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp); |
| 1636 | mutex_unlock(&gspca_dev->usb_lock); |
| 1637 | return ret; |
| 1638 | } |
| 1639 | |
| 1640 | static int vidioc_s_jpegcomp(struct file *file, void *priv, |
| 1641 | struct v4l2_jpegcompression *jpegcomp) |
| 1642 | { |
| 1643 | struct gspca_dev *gspca_dev = priv; |
| 1644 | int ret; |
| 1645 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1646 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
| 1647 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1648 | if (!gspca_dev->sd_desc->set_jcomp) |
| 1649 | return -EINVAL; |
| 1650 | ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp); |
| 1651 | mutex_unlock(&gspca_dev->usb_lock); |
| 1652 | return ret; |
| 1653 | } |
| 1654 | |
| 1655 | static int vidioc_g_parm(struct file *filp, void *priv, |
| 1656 | struct v4l2_streamparm *parm) |
| 1657 | { |
| 1658 | struct gspca_dev *gspca_dev = priv; |
| 1659 | |
| 1660 | memset(parm, 0, sizeof parm); |
| 1661 | parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1662 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
| 1663 | return 0; |
| 1664 | } |
| 1665 | |
| 1666 | static int vidioc_s_parm(struct file *filp, void *priv, |
| 1667 | struct v4l2_streamparm *parm) |
| 1668 | { |
| 1669 | struct gspca_dev *gspca_dev = priv; |
| 1670 | int n; |
| 1671 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1672 | n = parm->parm.capture.readbuffers; |
| 1673 | if (n == 0 || n > GSPCA_MAX_FRAMES) |
| 1674 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
| 1675 | else |
| 1676 | gspca_dev->nbufread = n; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1677 | return 0; |
| 1678 | } |
| 1679 | |
| 1680 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 1681 | static int vidiocgmbuf(struct file *file, void *priv, |
| 1682 | struct video_mbuf *mbuf) |
| 1683 | { |
| 1684 | struct gspca_dev *gspca_dev = file->private_data; |
| 1685 | int i; |
| 1686 | |
| 1687 | PDEBUG(D_STREAM, "cgmbuf"); |
| 1688 | if (gspca_dev->nframes == 0) { |
| 1689 | struct v4l2_requestbuffers rb; |
| 1690 | int ret; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1691 | __u32 pixfmt; |
| 1692 | short width, height; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1693 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1694 | /* as the final format is not yet defined, allocate |
| 1695 | buffers with the max size */ |
| 1696 | pixfmt = gspca_dev->pixfmt; |
| 1697 | width = gspca_dev->width; |
| 1698 | height = gspca_dev->height; |
| 1699 | gspca_dev->pixfmt = V4L2_PIX_FMT_BGR32; |
| 1700 | gspca_dev->width = 640; |
| 1701 | gspca_dev->height = 480; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1702 | memset(&rb, 0, sizeof rb); |
| 1703 | rb.count = 4; |
| 1704 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1705 | rb.memory = V4L2_MEMORY_MMAP; |
| 1706 | ret = vidioc_reqbufs(file, priv, &rb); |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1707 | gspca_dev->pixfmt = pixfmt; |
| 1708 | gspca_dev->width = width; |
| 1709 | gspca_dev->height = height; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1710 | if (ret != 0) |
| 1711 | return ret; |
| 1712 | } |
| 1713 | mbuf->frames = gspca_dev->nframes; |
| 1714 | mbuf->size = gspca_dev->frsz * gspca_dev->nframes; |
| 1715 | for (i = 0; i < mbuf->frames; i++) |
| 1716 | mbuf->offsets[i] = gspca_dev->frame[i].v4l2_buf.m.offset; |
| 1717 | return 0; |
| 1718 | } |
| 1719 | #endif |
| 1720 | |
| 1721 | static int dev_mmap(struct file *file, struct vm_area_struct *vma) |
| 1722 | { |
| 1723 | struct gspca_dev *gspca_dev = file->private_data; |
| 1724 | struct gspca_frame *frame = 0; |
| 1725 | struct page *page; |
| 1726 | unsigned long addr, start, size; |
| 1727 | int i, ret; |
| 1728 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 1729 | int compat = 0; |
| 1730 | #endif |
| 1731 | |
| 1732 | start = vma->vm_start; |
| 1733 | size = vma->vm_end - vma->vm_start; |
| 1734 | PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size); |
| 1735 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1736 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1737 | return -ERESTARTSYS; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1738 | if (!gspca_dev->present) { |
| 1739 | ret = -ENODEV; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1740 | goto out; |
| 1741 | } |
| 1742 | if (gspca_dev->capt_file != file) { |
| 1743 | ret = -EINVAL; |
| 1744 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1745 | } |
| 1746 | |
| 1747 | for (i = 0; i < gspca_dev->nframes; ++i) { |
| 1748 | if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) { |
| 1749 | PDEBUG(D_STREAM, "mmap bad memory type"); |
| 1750 | break; |
| 1751 | } |
| 1752 | if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT) |
| 1753 | == vma->vm_pgoff) { |
| 1754 | frame = &gspca_dev->frame[i]; |
| 1755 | break; |
| 1756 | } |
| 1757 | } |
| 1758 | if (frame == 0) { |
| 1759 | PDEBUG(D_STREAM, "mmap no frame buffer found"); |
| 1760 | ret = -EINVAL; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1761 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1762 | } |
| 1763 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 1764 | if (i == 0 && size == frame->v4l2_buf.length * gspca_dev->nframes) |
| 1765 | compat = 1; |
| 1766 | else |
| 1767 | #endif |
| 1768 | if (size != frame->v4l2_buf.length) { |
| 1769 | PDEBUG(D_STREAM, "mmap bad size"); |
| 1770 | ret = -EINVAL; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1771 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1772 | } |
| 1773 | |
| 1774 | /* |
| 1775 | * - VM_IO marks the area as being a mmaped region for I/O to a |
| 1776 | * device. It also prevents the region from being core dumped. |
| 1777 | */ |
| 1778 | vma->vm_flags |= VM_IO; |
| 1779 | |
| 1780 | addr = (unsigned long) frame->data; |
| 1781 | while (size > 0) { |
| 1782 | page = vmalloc_to_page((void *) addr); |
| 1783 | ret = vm_insert_page(vma, start, page); |
| 1784 | if (ret < 0) |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1785 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1786 | start += PAGE_SIZE; |
| 1787 | addr += PAGE_SIZE; |
| 1788 | size -= PAGE_SIZE; |
| 1789 | } |
| 1790 | |
| 1791 | vma->vm_ops = &gspca_vm_ops; |
| 1792 | vma->vm_private_data = frame; |
| 1793 | gspca_vm_open(vma); |
| 1794 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 1795 | if (compat) { |
| 1796 | /*fixme: ugly*/ |
| 1797 | for (i = 1; i < gspca_dev->nframes; ++i) |
| 1798 | gspca_dev->frame[i].v4l2_buf.flags |= |
| 1799 | V4L2_BUF_FLAG_MAPPED; |
| 1800 | } |
| 1801 | #endif |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1802 | ret = 0; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1803 | out: |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1804 | mutex_unlock(&gspca_dev->queue_lock); |
| 1805 | return ret; |
| 1806 | } |
| 1807 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1808 | /* |
| 1809 | * wait for a video frame |
| 1810 | * |
| 1811 | * If a frame is ready, its index is returned. |
| 1812 | */ |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1813 | static int frame_wait(struct gspca_dev *gspca_dev, |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1814 | int nonblock_ing) |
| 1815 | { |
| 1816 | struct gspca_frame *frame; |
| 1817 | int i, j, ret; |
| 1818 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1819 | /* if userptr, treat the awaiting URBs */ |
| 1820 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) |
| 1821 | isoc_transfer(gspca_dev); |
| 1822 | |
| 1823 | /* check if a frame is ready */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1824 | i = gspca_dev->fr_o; |
| 1825 | j = gspca_dev->fr_queue[i]; |
| 1826 | frame = &gspca_dev->frame[j]; |
| 1827 | if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE) |
| 1828 | goto ok; |
| 1829 | if (nonblock_ing) /* no frame yet */ |
| 1830 | return -EAGAIN; |
| 1831 | |
| 1832 | /* wait till a frame is ready */ |
| 1833 | for (;;) { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1834 | ret = wait_event_interruptible_timeout(gspca_dev->wq, |
| 1835 | atomic_read(&gspca_dev->nevent) > 0, |
| 1836 | msecs_to_jiffies(3000)); |
| 1837 | if (ret <= 0) { |
| 1838 | if (ret < 0) |
| 1839 | return ret; |
| 1840 | return -EIO; |
| 1841 | } |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1842 | if (!gspca_dev->streaming || !gspca_dev->present) |
| 1843 | return -EIO; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1844 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) |
| 1845 | isoc_transfer(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1846 | i = gspca_dev->fr_o; |
| 1847 | j = gspca_dev->fr_queue[i]; |
| 1848 | frame = &gspca_dev->frame[j]; |
| 1849 | if (frame->v4l2_buf.flags & V4L2_BUF_FLAG_DONE) |
| 1850 | break; |
| 1851 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1852 | ok: |
| 1853 | atomic_dec(&gspca_dev->nevent); |
| 1854 | gspca_dev->fr_o = (i + 1) % gspca_dev->nframes; |
| 1855 | PDEBUG(D_FRAM, "frame wait q:%d i:%d o:%d", |
| 1856 | gspca_dev->fr_q, |
| 1857 | gspca_dev->fr_i, |
| 1858 | gspca_dev->fr_o); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1859 | |
| 1860 | if (gspca_dev->sd_desc->dq_callback) |
| 1861 | gspca_dev->sd_desc->dq_callback(gspca_dev); |
| 1862 | |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1863 | return j; |
| 1864 | } |
| 1865 | |
| 1866 | /* |
| 1867 | * dequeue a video buffer |
| 1868 | * |
| 1869 | * If nonblock_ing is false, block until a buffer is available. |
| 1870 | */ |
| 1871 | static int vidioc_dqbuf(struct file *file, void *priv, |
| 1872 | struct v4l2_buffer *v4l2_buf) |
| 1873 | { |
| 1874 | struct gspca_dev *gspca_dev = priv; |
| 1875 | struct gspca_frame *frame; |
| 1876 | int i, ret; |
| 1877 | |
| 1878 | PDEBUG(D_FRAM, "dqbuf"); |
| 1879 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE |
| 1880 | || (v4l2_buf->memory != V4L2_MEMORY_MMAP |
| 1881 | && v4l2_buf->memory != V4L2_MEMORY_USERPTR)) |
| 1882 | return -EINVAL; |
| 1883 | if (!gspca_dev->streaming) |
| 1884 | return -EINVAL; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1885 | if (gspca_dev->capt_file != file) { |
| 1886 | ret = -EINVAL; |
| 1887 | goto out; |
| 1888 | } |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1889 | |
| 1890 | /* only one read */ |
| 1891 | if (mutex_lock_interruptible(&gspca_dev->read_lock)) |
| 1892 | return -ERESTARTSYS; |
| 1893 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1894 | ret = frame_wait(gspca_dev, file->f_flags & O_NONBLOCK); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1895 | if (ret < 0) |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1896 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1897 | i = ret; /* frame index */ |
| 1898 | frame = &gspca_dev->frame[i]; |
| 1899 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; |
| 1900 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); |
| 1901 | PDEBUG(D_FRAM, "dqbuf %d", i); |
| 1902 | ret = 0; |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1903 | out: |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1904 | mutex_unlock(&gspca_dev->read_lock); |
| 1905 | return ret; |
| 1906 | } |
| 1907 | |
| 1908 | /* |
| 1909 | * queue a video buffer |
| 1910 | * |
| 1911 | * Attempting to queue a buffer that has already been |
| 1912 | * queued will return -EINVAL. |
| 1913 | */ |
| 1914 | static int vidioc_qbuf(struct file *file, void *priv, |
| 1915 | struct v4l2_buffer *v4l2_buf) |
| 1916 | { |
| 1917 | struct gspca_dev *gspca_dev = priv; |
| 1918 | struct gspca_frame *frame; |
| 1919 | int i, index, ret; |
| 1920 | |
| 1921 | PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index); |
| 1922 | if (v4l2_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1923 | return -EINVAL; |
| 1924 | |
| 1925 | index = v4l2_buf->index; |
| 1926 | if ((unsigned) index >= gspca_dev->nframes) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1927 | PDEBUG(D_FRAM, |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1928 | "qbuf idx %d >= %d", index, gspca_dev->nframes); |
| 1929 | return -EINVAL; |
| 1930 | } |
| 1931 | frame = &gspca_dev->frame[index]; |
| 1932 | |
| 1933 | if (v4l2_buf->memory != frame->v4l2_buf.memory) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1934 | PDEBUG(D_FRAM, "qbuf bad memory type"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1935 | return -EINVAL; |
| 1936 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 1937 | if (gspca_dev->capt_file != file) |
| 1938 | return -EINVAL; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1939 | |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 1940 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
| 1941 | return -ERESTARTSYS; |
| 1942 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1943 | if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) { |
| 1944 | PDEBUG(D_FRAM, "qbuf bad state"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1945 | ret = -EINVAL; |
| 1946 | goto out; |
| 1947 | } |
| 1948 | |
| 1949 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1950 | /* frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1951 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1952 | if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1953 | frame->data = frame->data_end = |
| 1954 | (unsigned char *) v4l2_buf->m.userptr; |
| 1955 | frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr; |
| 1956 | frame->v4l2_buf.length = v4l2_buf->length; |
| 1957 | } |
| 1958 | |
| 1959 | /* put the buffer in the 'queued' queue */ |
| 1960 | i = gspca_dev->fr_q; |
| 1961 | gspca_dev->fr_queue[i] = index; |
| 1962 | gspca_dev->fr_q = (i + 1) % gspca_dev->nframes; |
| 1963 | PDEBUG(D_FRAM, "qbuf q:%d i:%d o:%d", |
| 1964 | gspca_dev->fr_q, |
| 1965 | gspca_dev->fr_i, |
| 1966 | gspca_dev->fr_o); |
| 1967 | |
| 1968 | v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; |
| 1969 | v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE; |
| 1970 | ret = 0; |
| 1971 | out: |
| 1972 | mutex_unlock(&gspca_dev->queue_lock); |
| 1973 | return ret; |
| 1974 | } |
| 1975 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1976 | /* |
| 1977 | * allocate the resources for read() |
| 1978 | */ |
| 1979 | static int read_alloc(struct gspca_dev *gspca_dev, |
| 1980 | struct file *file) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1981 | { |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1982 | struct v4l2_buffer v4l2_buf; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1983 | int i, ret; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1984 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1985 | PDEBUG(D_STREAM, "read alloc"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1986 | if (gspca_dev->nframes == 0) { |
| 1987 | struct v4l2_requestbuffers rb; |
| 1988 | |
| 1989 | memset(&rb, 0, sizeof rb); |
| 1990 | rb.count = gspca_dev->nbufread; |
| 1991 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1992 | rb.memory = V4L2_MEMORY_MMAP; |
| 1993 | ret = vidioc_reqbufs(file, gspca_dev, &rb); |
| 1994 | if (ret != 0) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 1995 | PDEBUG(D_STREAM, "read reqbuf err %d", ret); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 1996 | return ret; |
| 1997 | } |
| 1998 | memset(&v4l2_buf, 0, sizeof v4l2_buf); |
| 1999 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 2000 | v4l2_buf.memory = V4L2_MEMORY_MMAP; |
| 2001 | for (i = 0; i < gspca_dev->nbufread; i++) { |
| 2002 | v4l2_buf.index = i; |
| 2003 | /*fixme: ugly!*/ |
| 2004 | gspca_dev->frame[i].v4l2_buf.flags |= |
| 2005 | V4L2_BUF_FLAG_MAPPED; |
| 2006 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); |
| 2007 | if (ret != 0) { |
| 2008 | PDEBUG(D_STREAM, "read qbuf err: %d", ret); |
| 2009 | return ret; |
| 2010 | } |
| 2011 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2012 | gspca_dev->memory = GSPCA_MEMORY_READ; |
| 2013 | } |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 2014 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2015 | /* start streaming */ |
| 2016 | ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE); |
| 2017 | if (ret != 0) |
| 2018 | PDEBUG(D_STREAM, "read streamon err %d", ret); |
| 2019 | return ret; |
| 2020 | } |
| 2021 | |
| 2022 | static unsigned int dev_poll(struct file *file, poll_table *wait) |
| 2023 | { |
| 2024 | struct gspca_dev *gspca_dev = file->private_data; |
| 2025 | int i, ret; |
| 2026 | |
| 2027 | PDEBUG(D_FRAM, "poll"); |
| 2028 | |
| 2029 | poll_wait(file, &gspca_dev->wq, wait); |
| 2030 | if (!gspca_dev->present) |
| 2031 | return POLLERR; |
| 2032 | |
| 2033 | /* if not streaming, the user would use read() */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2034 | if (!gspca_dev->streaming) { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2035 | if (gspca_dev->memory != GSPCA_MEMORY_NO) { |
| 2036 | ret = POLLERR; /* not the 1st time */ |
| 2037 | goto out; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2038 | } |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2039 | ret = read_alloc(gspca_dev, file); |
| 2040 | if (ret != 0) { |
| 2041 | ret = POLLERR; |
| 2042 | goto out; |
| 2043 | } |
| 2044 | } |
| 2045 | |
| 2046 | if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0) |
| 2047 | return POLLERR; |
| 2048 | if (!gspca_dev->present) { |
| 2049 | ret = POLLERR; |
| 2050 | goto out; |
| 2051 | } |
| 2052 | |
| 2053 | /* if not mmap, treat the awaiting URBs */ |
| 2054 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR |
| 2055 | && gspca_dev->capt_file == file) |
| 2056 | isoc_transfer(gspca_dev); |
| 2057 | |
| 2058 | i = gspca_dev->fr_o; |
| 2059 | i = gspca_dev->fr_queue[i]; |
| 2060 | if (gspca_dev->frame[i].v4l2_buf.flags & V4L2_BUF_FLAG_DONE) |
| 2061 | ret = POLLIN | POLLRDNORM; /* something to read */ |
| 2062 | else |
| 2063 | ret = 0; |
| 2064 | out: |
| 2065 | mutex_unlock(&gspca_dev->queue_lock); |
| 2066 | return ret; |
| 2067 | } |
| 2068 | |
| 2069 | static ssize_t dev_read(struct file *file, char __user *data, |
| 2070 | size_t count, loff_t *ppos) |
| 2071 | { |
| 2072 | struct gspca_dev *gspca_dev = file->private_data; |
| 2073 | struct gspca_frame *frame; |
| 2074 | struct v4l2_buffer v4l2_buf; |
| 2075 | struct timeval timestamp; |
| 2076 | int i, ret, ret2; |
| 2077 | |
| 2078 | PDEBUG(D_FRAM, "read (%d)", count); |
| 2079 | if (!gspca_dev->present) |
| 2080 | return -ENODEV; |
| 2081 | switch (gspca_dev->memory) { |
| 2082 | case GSPCA_MEMORY_NO: /* first time */ |
| 2083 | ret = read_alloc(gspca_dev, file); |
| 2084 | if (ret != 0) |
| 2085 | return ret; |
| 2086 | break; |
| 2087 | case GSPCA_MEMORY_READ: |
| 2088 | if (gspca_dev->capt_file != file) |
| 2089 | return -EINVAL; |
| 2090 | break; |
| 2091 | default: |
| 2092 | return -EINVAL; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2093 | } |
| 2094 | |
| 2095 | /* get a frame */ |
| 2096 | jiffies_to_timeval(get_jiffies_64(), ×tamp); |
| 2097 | timestamp.tv_sec--; |
| 2098 | for (i = 0; i < 2; i++) { |
| 2099 | memset(&v4l2_buf, 0, sizeof v4l2_buf); |
| 2100 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 2101 | v4l2_buf.memory = V4L2_MEMORY_MMAP; |
| 2102 | ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf); |
| 2103 | if (ret != 0) { |
| 2104 | PDEBUG(D_STREAM, "read dqbuf err %d", ret); |
| 2105 | return ret; |
| 2106 | } |
| 2107 | |
| 2108 | /* if the process slept for more than 1 second, |
| 2109 | * get a brand new frame */ |
| 2110 | frame = &gspca_dev->frame[v4l2_buf.index]; |
| 2111 | if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec) |
| 2112 | break; |
| 2113 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); |
| 2114 | if (ret != 0) { |
| 2115 | PDEBUG(D_STREAM, "read qbuf err %d", ret); |
| 2116 | return ret; |
| 2117 | } |
| 2118 | } |
| 2119 | |
| 2120 | /* copy the frame */ |
| 2121 | if (count < frame->v4l2_buf.bytesused) { |
| 2122 | PDEBUG(D_STREAM, "read bad count: %d < %d", |
| 2123 | count, frame->v4l2_buf.bytesused); |
| 2124 | /*fixme: special errno?*/ |
| 2125 | ret = -EINVAL; |
| 2126 | goto out; |
| 2127 | } |
| 2128 | count = frame->v4l2_buf.bytesused; |
| 2129 | ret = copy_to_user(data, frame->data, count); |
| 2130 | if (ret != 0) { |
| 2131 | PDEBUG(D_ERR|D_STREAM, |
| 2132 | "read cp to user lack %d / %d", ret, count); |
| 2133 | ret = -EFAULT; |
| 2134 | goto out; |
| 2135 | } |
| 2136 | ret = count; |
| 2137 | out: |
| 2138 | /* in each case, requeue the buffer */ |
| 2139 | ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf); |
| 2140 | if (ret2 != 0) |
| 2141 | return ret2; |
| 2142 | return ret; |
| 2143 | } |
| 2144 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2145 | static void dev_release(struct video_device *vfd) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2146 | { |
| 2147 | /* nothing */ |
| 2148 | } |
| 2149 | |
| 2150 | static struct file_operations dev_fops = { |
| 2151 | .owner = THIS_MODULE, |
| 2152 | .open = dev_open, |
| 2153 | .release = dev_close, |
| 2154 | .read = dev_read, |
| 2155 | .mmap = dev_mmap, |
| 2156 | .ioctl = video_ioctl2, |
| 2157 | .llseek = no_llseek, |
| 2158 | .poll = dev_poll, |
| 2159 | }; |
| 2160 | |
| 2161 | static struct video_device gspca_template = { |
| 2162 | .name = "gspca main driver", |
| 2163 | .type = VID_TYPE_CAPTURE, |
| 2164 | .fops = &dev_fops, |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2165 | .release = dev_release, /* mandatory */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2166 | .minor = -1, |
| 2167 | .vidioc_querycap = vidioc_querycap, |
| 2168 | .vidioc_dqbuf = vidioc_dqbuf, |
| 2169 | .vidioc_qbuf = vidioc_qbuf, |
| 2170 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, |
| 2171 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, |
| 2172 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, |
| 2173 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, |
| 2174 | .vidioc_streamon = vidioc_streamon, |
| 2175 | .vidioc_queryctrl = vidioc_queryctrl, |
| 2176 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 2177 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 2178 | .vidioc_querymenu = vidioc_querymenu, |
| 2179 | .vidioc_enum_input = vidioc_enum_input, |
| 2180 | .vidioc_g_input = vidioc_g_input, |
| 2181 | .vidioc_s_input = vidioc_s_input, |
| 2182 | .vidioc_reqbufs = vidioc_reqbufs, |
| 2183 | .vidioc_querybuf = vidioc_querybuf, |
| 2184 | .vidioc_streamoff = vidioc_streamoff, |
| 2185 | .vidioc_g_jpegcomp = vidioc_g_jpegcomp, |
| 2186 | .vidioc_s_jpegcomp = vidioc_s_jpegcomp, |
| 2187 | .vidioc_g_parm = vidioc_g_parm, |
| 2188 | .vidioc_s_parm = vidioc_s_parm, |
| 2189 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 2190 | .vidiocgmbuf = vidiocgmbuf, |
| 2191 | #endif |
| 2192 | }; |
| 2193 | |
| 2194 | /* |
| 2195 | * probe and create a new gspca device |
| 2196 | * |
| 2197 | * This function must be called by the sub-driver when it is |
| 2198 | * called for probing a new device. |
| 2199 | */ |
| 2200 | int gspca_dev_probe(struct usb_interface *intf, |
| 2201 | const struct usb_device_id *id, |
| 2202 | const struct sd_desc *sd_desc, |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2203 | int dev_size, |
| 2204 | struct module *module) |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2205 | { |
| 2206 | struct usb_interface_descriptor *interface; |
| 2207 | struct gspca_dev *gspca_dev; |
| 2208 | struct usb_device *dev = interface_to_usbdev(intf); |
| 2209 | int ret; |
| 2210 | __u16 vendor; |
| 2211 | __u16 product; |
| 2212 | |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2213 | vendor = id->idVendor; |
| 2214 | product = id->idProduct; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2215 | PDEBUG(D_PROBE, "probing %04x:%04x", vendor, product); |
| 2216 | |
| 2217 | /* we don't handle multi-config cameras */ |
| 2218 | if (dev->descriptor.bNumConfigurations != 1) |
| 2219 | return -ENODEV; |
| 2220 | interface = &intf->cur_altsetting->desc; |
| 2221 | if (interface->bInterfaceNumber > 0) |
| 2222 | return -ENODEV; |
| 2223 | |
| 2224 | /* create the device */ |
| 2225 | if (dev_size < sizeof *gspca_dev) |
| 2226 | dev_size = sizeof *gspca_dev; |
| 2227 | gspca_dev = kzalloc(dev_size, GFP_KERNEL); |
| 2228 | if (gspca_dev == NULL) { |
| 2229 | err("couldn't kzalloc gspca struct"); |
| 2230 | return -EIO; |
| 2231 | } |
| 2232 | gspca_dev->dev = dev; |
| 2233 | gspca_dev->iface = interface->bInterfaceNumber; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2234 | gspca_dev->nbalt = intf->num_altsetting; |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2235 | gspca_dev->sd_desc = sd_desc; |
| 2236 | /* gspca_dev->users = 0; (done by kzalloc) */ |
| 2237 | gspca_dev->nbufread = 2; |
| 2238 | |
| 2239 | /* configure the subdriver */ |
| 2240 | ret = gspca_dev->sd_desc->config(gspca_dev, id); |
| 2241 | if (ret < 0) |
| 2242 | goto out; |
| 2243 | ret = gspca_set_alt0(gspca_dev); |
| 2244 | if (ret < 0) |
| 2245 | goto out; |
| 2246 | gspca_set_default_mode(gspca_dev); |
| 2247 | |
| 2248 | mutex_init(&gspca_dev->usb_lock); |
| 2249 | mutex_init(&gspca_dev->read_lock); |
| 2250 | mutex_init(&gspca_dev->queue_lock); |
| 2251 | init_waitqueue_head(&gspca_dev->wq); |
| 2252 | |
| 2253 | /* init video stuff */ |
| 2254 | memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template); |
| 2255 | gspca_dev->vdev.dev = &dev->dev; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2256 | memcpy(&gspca_dev->fops, &dev_fops, sizeof gspca_dev->fops); |
| 2257 | gspca_dev->vdev.fops = &gspca_dev->fops; |
| 2258 | gspca_dev->fops.owner = module; /* module protection */ |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2259 | ret = video_register_device(&gspca_dev->vdev, |
| 2260 | VFL_TYPE_GRABBER, |
| 2261 | video_nr); |
| 2262 | if (ret < 0) { |
| 2263 | err("video_register_device err %d", ret); |
| 2264 | goto out; |
| 2265 | } |
| 2266 | |
| 2267 | gspca_dev->present = 1; |
| 2268 | usb_set_intfdata(intf, gspca_dev); |
| 2269 | PDEBUG(D_PROBE, "probe ok"); |
| 2270 | return 0; |
| 2271 | out: |
| 2272 | kfree(gspca_dev); |
| 2273 | return ret; |
| 2274 | } |
| 2275 | EXPORT_SYMBOL(gspca_dev_probe); |
| 2276 | |
| 2277 | /* |
| 2278 | * USB disconnection |
| 2279 | * |
| 2280 | * This function must be called by the sub-driver |
| 2281 | * when the device disconnects, after the specific resources are freed. |
| 2282 | */ |
| 2283 | void gspca_disconnect(struct usb_interface *intf) |
| 2284 | { |
Jean-Francois Moine | 4aa0d03 | 2008-05-04 06:46:21 -0300 | [diff] [blame] | 2285 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2286 | |
| 2287 | if (!gspca_dev) |
| 2288 | return; |
| 2289 | gspca_dev->present = 0; |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 2290 | mutex_lock(&gspca_dev->queue_lock); |
| 2291 | mutex_lock(&gspca_dev->usb_lock); |
| 2292 | gspca_dev->streaming = 0; |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2293 | destroy_urbs(gspca_dev); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2294 | mutex_unlock(&gspca_dev->usb_lock); |
Hans de Goede | e2997a7 | 2008-04-23 08:09:12 -0300 | [diff] [blame] | 2295 | mutex_unlock(&gspca_dev->queue_lock); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2296 | while (gspca_dev->users != 0) { /* wait until fully closed */ |
| 2297 | atomic_inc(&gspca_dev->nevent); |
| 2298 | wake_up_interruptible(&gspca_dev->wq); /* wake processes */ |
| 2299 | schedule(); |
| 2300 | } |
| 2301 | /* We don't want people trying to open up the device */ |
| 2302 | video_unregister_device(&gspca_dev->vdev); |
| 2303 | /* Free the memory */ |
| 2304 | kfree(gspca_dev); |
| 2305 | PDEBUG(D_PROBE, "disconnect complete"); |
| 2306 | } |
| 2307 | EXPORT_SYMBOL(gspca_disconnect); |
| 2308 | |
| 2309 | /* -- module insert / remove -- */ |
| 2310 | static int __init gspca_init(void) |
| 2311 | { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2312 | #ifdef GSPCA_HLP |
| 2313 | int ret; |
| 2314 | |
| 2315 | /* create /dev/gspca_hlp */ |
| 2316 | ret = misc_register(&hlp_device); |
| 2317 | if (ret < 0) |
| 2318 | err("misc_register err %d", ret); |
| 2319 | start_hlp(); /* try to start the helper process */ |
| 2320 | #endif |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2321 | info("main v%s registered", version); |
| 2322 | return 0; |
| 2323 | } |
| 2324 | static void __exit gspca_exit(void) |
| 2325 | { |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2326 | #ifdef GSPCA_HLP |
| 2327 | misc_deregister(&hlp_device); |
| 2328 | #endif |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2329 | info("main deregistered"); |
| 2330 | } |
| 2331 | |
| 2332 | module_init(gspca_init); |
| 2333 | module_exit(gspca_exit); |
| 2334 | |
| 2335 | module_param_named(debug, gspca_debug, int, 0644); |
| 2336 | MODULE_PARM_DESC(debug, |
| 2337 | "Debug (bit) 0x01:error 0x02:probe 0x04:config" |
Jean-Francois Moine | d43fa32 | 2008-06-12 10:58:58 -0300 | [diff] [blame^] | 2338 | " 0x08:stream 0x10:frame 0x20:packet 0x40:USBin 0x80:USBout" |
| 2339 | " 0x0100: v4l2"); |
Jean-Francois Moine | 63eb954 | 2008-04-12 09:58:09 -0300 | [diff] [blame] | 2340 | |
| 2341 | module_param(comp_fac, int, 0644); |
| 2342 | MODULE_PARM_DESC(comp_fac, |
| 2343 | "Buffer size ratio when compressed in percent"); |