Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1 | /* |
| 2 | * uvc_driver.c -- USB Video Class driver |
| 3 | * |
Laurent Pinchart | 11fc5ba | 2010-09-20 06:10:10 -0300 | [diff] [blame] | 4 | * Copyright (C) 2005-2010 |
| 5 | * Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | */ |
| 13 | |
Andrew Morton | 66ede03 | 2012-03-01 19:56:29 -0300 | [diff] [blame] | 14 | #include <linux/atomic.h> |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 15 | #include <linux/kernel.h> |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 16 | #include <linux/list.h> |
| 17 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 18 | #include <linux/slab.h> |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 19 | #include <linux/usb.h> |
| 20 | #include <linux/videodev2.h> |
| 21 | #include <linux/vmalloc.h> |
| 22 | #include <linux/wait.h> |
Mauro Carvalho Chehab | fd3e582 | 2011-06-25 13:50:37 -0300 | [diff] [blame] | 23 | #include <linux/version.h> |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 24 | #include <asm/unaligned.h> |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 25 | |
| 26 | #include <media/v4l2-common.h> |
| 27 | |
| 28 | #include "uvcvideo.h" |
| 29 | |
Laurent Pinchart | 11fc5ba | 2010-09-20 06:10:10 -0300 | [diff] [blame] | 30 | #define DRIVER_AUTHOR "Laurent Pinchart " \ |
| 31 | "<laurent.pinchart@ideasonboard.com>" |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 32 | #define DRIVER_DESC "USB Video Class driver" |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 33 | |
Laurent Pinchart | 310fe52 | 2009-12-09 22:57:48 -0300 | [diff] [blame] | 34 | unsigned int uvc_clock_param = CLOCK_MONOTONIC; |
Laurent Pinchart | 5d0fd3c | 2015-07-27 11:06:48 -0300 | [diff] [blame] | 35 | unsigned int uvc_hw_timestamps_param; |
Laurent Pinchart | 0fbd8ee | 2008-12-06 16:25:14 -0300 | [diff] [blame] | 36 | unsigned int uvc_no_drop_param; |
Laurent Pinchart | 73de359 | 2009-12-10 10:00:39 -0300 | [diff] [blame] | 37 | static unsigned int uvc_quirks_param = -1; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 38 | unsigned int uvc_trace_param; |
Laurent Pinchart | b232a01 | 2009-10-09 20:55:23 -0300 | [diff] [blame] | 39 | unsigned int uvc_timeout_param = UVC_CTRL_STREAMING_TIMEOUT; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 40 | |
| 41 | /* ------------------------------------------------------------------------ |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 42 | * Video formats |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 43 | */ |
| 44 | |
| 45 | static struct uvc_format_desc uvc_fmts[] = { |
| 46 | { |
| 47 | .name = "YUV 4:2:2 (YUYV)", |
| 48 | .guid = UVC_GUID_FORMAT_YUY2, |
| 49 | .fcc = V4L2_PIX_FMT_YUYV, |
| 50 | }, |
| 51 | { |
Daniel Ritz | 68f194e | 2009-12-12 14:57:17 -0300 | [diff] [blame] | 52 | .name = "YUV 4:2:2 (YUYV)", |
| 53 | .guid = UVC_GUID_FORMAT_YUY2_ISIGHT, |
| 54 | .fcc = V4L2_PIX_FMT_YUYV, |
| 55 | }, |
| 56 | { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 57 | .name = "YUV 4:2:0 (NV12)", |
| 58 | .guid = UVC_GUID_FORMAT_NV12, |
| 59 | .fcc = V4L2_PIX_FMT_NV12, |
| 60 | }, |
| 61 | { |
| 62 | .name = "MJPEG", |
| 63 | .guid = UVC_GUID_FORMAT_MJPEG, |
| 64 | .fcc = V4L2_PIX_FMT_MJPEG, |
| 65 | }, |
| 66 | { |
| 67 | .name = "YVU 4:2:0 (YV12)", |
| 68 | .guid = UVC_GUID_FORMAT_YV12, |
| 69 | .fcc = V4L2_PIX_FMT_YVU420, |
| 70 | }, |
| 71 | { |
| 72 | .name = "YUV 4:2:0 (I420)", |
| 73 | .guid = UVC_GUID_FORMAT_I420, |
| 74 | .fcc = V4L2_PIX_FMT_YUV420, |
| 75 | }, |
| 76 | { |
Hans de Goede | 7225a1d | 2011-05-11 09:56:20 -0300 | [diff] [blame] | 77 | .name = "YUV 4:2:0 (M420)", |
| 78 | .guid = UVC_GUID_FORMAT_M420, |
| 79 | .fcc = V4L2_PIX_FMT_M420, |
| 80 | }, |
| 81 | { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 82 | .name = "YUV 4:2:2 (UYVY)", |
| 83 | .guid = UVC_GUID_FORMAT_UYVY, |
| 84 | .fcc = V4L2_PIX_FMT_UYVY, |
| 85 | }, |
| 86 | { |
Stefan Muenzel | ca47e71 | 2012-07-28 19:49:14 -0300 | [diff] [blame] | 87 | .name = "Greyscale 8-bit (Y800)", |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 88 | .guid = UVC_GUID_FORMAT_Y800, |
| 89 | .fcc = V4L2_PIX_FMT_GREY, |
| 90 | }, |
| 91 | { |
Stefan Muenzel | ca47e71 | 2012-07-28 19:49:14 -0300 | [diff] [blame] | 92 | .name = "Greyscale 8-bit (Y8 )", |
| 93 | .guid = UVC_GUID_FORMAT_Y8, |
| 94 | .fcc = V4L2_PIX_FMT_GREY, |
| 95 | }, |
| 96 | { |
| 97 | .name = "Greyscale 10-bit (Y10 )", |
| 98 | .guid = UVC_GUID_FORMAT_Y10, |
| 99 | .fcc = V4L2_PIX_FMT_Y10, |
| 100 | }, |
| 101 | { |
| 102 | .name = "Greyscale 12-bit (Y12 )", |
| 103 | .guid = UVC_GUID_FORMAT_Y12, |
| 104 | .fcc = V4L2_PIX_FMT_Y12, |
| 105 | }, |
| 106 | { |
| 107 | .name = "Greyscale 16-bit (Y16 )", |
Laurent Pinchart | 61421206 | 2010-04-12 10:41:22 -0300 | [diff] [blame] | 108 | .guid = UVC_GUID_FORMAT_Y16, |
| 109 | .fcc = V4L2_PIX_FMT_Y16, |
| 110 | }, |
| 111 | { |
Edgar Thier | e72ed08 | 2014-02-20 04:12:51 -0300 | [diff] [blame] | 112 | .name = "BGGR Bayer (BY8 )", |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 113 | .guid = UVC_GUID_FORMAT_BY8, |
| 114 | .fcc = V4L2_PIX_FMT_SBGGR8, |
| 115 | }, |
Laurent Pinchart | 5079107 | 2011-03-06 08:32:04 -0300 | [diff] [blame] | 116 | { |
Edgar Thier | e72ed08 | 2014-02-20 04:12:51 -0300 | [diff] [blame] | 117 | .name = "BGGR Bayer (BA81)", |
| 118 | .guid = UVC_GUID_FORMAT_BA81, |
| 119 | .fcc = V4L2_PIX_FMT_SBGGR8, |
| 120 | }, |
| 121 | { |
| 122 | .name = "GBRG Bayer (GBRG)", |
| 123 | .guid = UVC_GUID_FORMAT_GBRG, |
| 124 | .fcc = V4L2_PIX_FMT_SGBRG8, |
| 125 | }, |
| 126 | { |
| 127 | .name = "GRBG Bayer (GRBG)", |
| 128 | .guid = UVC_GUID_FORMAT_GRBG, |
| 129 | .fcc = V4L2_PIX_FMT_SGRBG8, |
| 130 | }, |
| 131 | { |
| 132 | .name = "RGGB Bayer (RGGB)", |
| 133 | .guid = UVC_GUID_FORMAT_RGGB, |
| 134 | .fcc = V4L2_PIX_FMT_SRGGB8, |
| 135 | }, |
| 136 | { |
Laurent Pinchart | 5079107 | 2011-03-06 08:32:04 -0300 | [diff] [blame] | 137 | .name = "RGB565", |
| 138 | .guid = UVC_GUID_FORMAT_RGBP, |
| 139 | .fcc = V4L2_PIX_FMT_RGB565, |
| 140 | }, |
Stephan Lachowsky | 25ad8a8 | 2011-01-28 16:38:58 -0300 | [diff] [blame] | 141 | { |
William Manley | 1b8dc32 | 2014-12-08 15:57:58 -0300 | [diff] [blame] | 142 | .name = "BGR 8:8:8 (BGR3)", |
| 143 | .guid = UVC_GUID_FORMAT_BGR3, |
| 144 | .fcc = V4L2_PIX_FMT_BGR24, |
| 145 | }, |
| 146 | { |
Stephan Lachowsky | 25ad8a8 | 2011-01-28 16:38:58 -0300 | [diff] [blame] | 147 | .name = "H.264", |
| 148 | .guid = UVC_GUID_FORMAT_H264, |
| 149 | .fcc = V4L2_PIX_FMT_H264, |
| 150 | }, |
Aviv Greenberg | 5d8d8db | 2016-02-03 15:08:52 -0200 | [diff] [blame] | 151 | { |
| 152 | .name = "Greyscale 8 L/R (Y8I)", |
| 153 | .guid = UVC_GUID_FORMAT_Y8I, |
| 154 | .fcc = V4L2_PIX_FMT_Y8I, |
| 155 | }, |
| 156 | { |
| 157 | .name = "Greyscale 12 L/R (Y12I)", |
| 158 | .guid = UVC_GUID_FORMAT_Y12I, |
| 159 | .fcc = V4L2_PIX_FMT_Y12I, |
| 160 | }, |
| 161 | { |
| 162 | .name = "Depth data 16-bit (Z16)", |
| 163 | .guid = UVC_GUID_FORMAT_Z16, |
| 164 | .fcc = V4L2_PIX_FMT_Z16, |
| 165 | }, |
| 166 | { |
| 167 | .name = "Bayer 10-bit (SRGGB10P)", |
| 168 | .guid = UVC_GUID_FORMAT_RW10, |
| 169 | .fcc = V4L2_PIX_FMT_SRGGB10P, |
| 170 | }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 171 | }; |
| 172 | |
| 173 | /* ------------------------------------------------------------------------ |
| 174 | * Utility functions |
| 175 | */ |
| 176 | |
| 177 | struct usb_host_endpoint *uvc_find_endpoint(struct usb_host_interface *alts, |
| 178 | __u8 epaddr) |
| 179 | { |
| 180 | struct usb_host_endpoint *ep; |
| 181 | unsigned int i; |
| 182 | |
| 183 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { |
| 184 | ep = &alts->endpoint[i]; |
| 185 | if (ep->desc.bEndpointAddress == epaddr) |
| 186 | return ep; |
| 187 | } |
| 188 | |
| 189 | return NULL; |
| 190 | } |
| 191 | |
| 192 | static struct uvc_format_desc *uvc_format_by_guid(const __u8 guid[16]) |
| 193 | { |
| 194 | unsigned int len = ARRAY_SIZE(uvc_fmts); |
| 195 | unsigned int i; |
| 196 | |
| 197 | for (i = 0; i < len; ++i) { |
| 198 | if (memcmp(guid, uvc_fmts[i].guid, 16) == 0) |
| 199 | return &uvc_fmts[i]; |
| 200 | } |
| 201 | |
| 202 | return NULL; |
| 203 | } |
| 204 | |
| 205 | static __u32 uvc_colorspace(const __u8 primaries) |
| 206 | { |
| 207 | static const __u8 colorprimaries[] = { |
| 208 | 0, |
| 209 | V4L2_COLORSPACE_SRGB, |
| 210 | V4L2_COLORSPACE_470_SYSTEM_M, |
| 211 | V4L2_COLORSPACE_470_SYSTEM_BG, |
| 212 | V4L2_COLORSPACE_SMPTE170M, |
| 213 | V4L2_COLORSPACE_SMPTE240M, |
| 214 | }; |
| 215 | |
| 216 | if (primaries < ARRAY_SIZE(colorprimaries)) |
| 217 | return colorprimaries[primaries]; |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | /* Simplify a fraction using a simple continued fraction decomposition. The |
| 223 | * idea here is to convert fractions such as 333333/10000000 to 1/30 using |
| 224 | * 32 bit arithmetic only. The algorithm is not perfect and relies upon two |
| 225 | * arbitrary parameters to remove non-significative terms from the simple |
| 226 | * continued fraction decomposition. Using 8 and 333 for n_terms and threshold |
| 227 | * respectively seems to give nice results. |
| 228 | */ |
| 229 | void uvc_simplify_fraction(uint32_t *numerator, uint32_t *denominator, |
| 230 | unsigned int n_terms, unsigned int threshold) |
| 231 | { |
| 232 | uint32_t *an; |
| 233 | uint32_t x, y, r; |
| 234 | unsigned int i, n; |
| 235 | |
| 236 | an = kmalloc(n_terms * sizeof *an, GFP_KERNEL); |
| 237 | if (an == NULL) |
| 238 | return; |
| 239 | |
| 240 | /* Convert the fraction to a simple continued fraction. See |
| 241 | * http://mathforum.org/dr.math/faq/faq.fractions.html |
| 242 | * Stop if the current term is bigger than or equal to the given |
| 243 | * threshold. |
| 244 | */ |
| 245 | x = *numerator; |
| 246 | y = *denominator; |
| 247 | |
| 248 | for (n = 0; n < n_terms && y != 0; ++n) { |
| 249 | an[n] = x / y; |
| 250 | if (an[n] >= threshold) { |
| 251 | if (n < 2) |
| 252 | n++; |
| 253 | break; |
| 254 | } |
| 255 | |
| 256 | r = x - an[n] * y; |
| 257 | x = y; |
| 258 | y = r; |
| 259 | } |
| 260 | |
| 261 | /* Expand the simple continued fraction back to an integer fraction. */ |
| 262 | x = 0; |
| 263 | y = 1; |
| 264 | |
| 265 | for (i = n; i > 0; --i) { |
| 266 | r = y; |
| 267 | y = an[i-1] * y + x; |
| 268 | x = r; |
| 269 | } |
| 270 | |
| 271 | *numerator = y; |
| 272 | *denominator = x; |
| 273 | kfree(an); |
| 274 | } |
| 275 | |
| 276 | /* Convert a fraction to a frame interval in 100ns multiples. The idea here is |
| 277 | * to compute numerator / denominator * 10000000 using 32 bit fixed point |
| 278 | * arithmetic only. |
| 279 | */ |
| 280 | uint32_t uvc_fraction_to_interval(uint32_t numerator, uint32_t denominator) |
| 281 | { |
| 282 | uint32_t multiplier; |
| 283 | |
| 284 | /* Saturate the result if the operation would overflow. */ |
| 285 | if (denominator == 0 || |
| 286 | numerator/denominator >= ((uint32_t)-1)/10000000) |
| 287 | return (uint32_t)-1; |
| 288 | |
| 289 | /* Divide both the denominator and the multiplier by two until |
| 290 | * numerator * multiplier doesn't overflow. If anyone knows a better |
| 291 | * algorithm please let me know. |
| 292 | */ |
| 293 | multiplier = 10000000; |
| 294 | while (numerator > ((uint32_t)-1)/multiplier) { |
| 295 | multiplier /= 2; |
| 296 | denominator /= 2; |
| 297 | } |
| 298 | |
| 299 | return denominator ? numerator * multiplier / denominator : 0; |
| 300 | } |
| 301 | |
| 302 | /* ------------------------------------------------------------------------ |
| 303 | * Terminal and unit management |
| 304 | */ |
| 305 | |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 306 | struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 307 | { |
| 308 | struct uvc_entity *entity; |
| 309 | |
| 310 | list_for_each_entry(entity, &dev->entities, list) { |
| 311 | if (entity->id == id) |
| 312 | return entity; |
| 313 | } |
| 314 | |
| 315 | return NULL; |
| 316 | } |
| 317 | |
| 318 | static struct uvc_entity *uvc_entity_by_reference(struct uvc_device *dev, |
| 319 | int id, struct uvc_entity *entity) |
| 320 | { |
| 321 | unsigned int i; |
| 322 | |
| 323 | if (entity == NULL) |
| 324 | entity = list_entry(&dev->entities, struct uvc_entity, list); |
| 325 | |
| 326 | list_for_each_entry_continue(entity, &dev->entities, list) { |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 327 | for (i = 0; i < entity->bNrInPins; ++i) |
| 328 | if (entity->baSourceID[i] == id) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 329 | return entity; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | return NULL; |
| 333 | } |
| 334 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 335 | static struct uvc_streaming *uvc_stream_by_id(struct uvc_device *dev, int id) |
| 336 | { |
| 337 | struct uvc_streaming *stream; |
| 338 | |
| 339 | list_for_each_entry(stream, &dev->streams, list) { |
| 340 | if (stream->header.bTerminalLink == id) |
| 341 | return stream; |
| 342 | } |
| 343 | |
| 344 | return NULL; |
| 345 | } |
| 346 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 347 | /* ------------------------------------------------------------------------ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 348 | * Descriptors parsing |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 349 | */ |
| 350 | |
| 351 | static int uvc_parse_format(struct uvc_device *dev, |
| 352 | struct uvc_streaming *streaming, struct uvc_format *format, |
| 353 | __u32 **intervals, unsigned char *buffer, int buflen) |
| 354 | { |
| 355 | struct usb_interface *intf = streaming->intf; |
| 356 | struct usb_host_interface *alts = intf->cur_altsetting; |
| 357 | struct uvc_format_desc *fmtdesc; |
| 358 | struct uvc_frame *frame; |
| 359 | const unsigned char *start = buffer; |
Philipp Zabel | e1b78a3 | 2014-08-06 17:50:49 -0300 | [diff] [blame] | 360 | unsigned int width_multiplier = 1; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 361 | unsigned int interval; |
| 362 | unsigned int i, n; |
| 363 | __u8 ftype; |
| 364 | |
| 365 | format->type = buffer[2]; |
| 366 | format->index = buffer[3]; |
| 367 | |
| 368 | switch (buffer[2]) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 369 | case UVC_VS_FORMAT_UNCOMPRESSED: |
| 370 | case UVC_VS_FORMAT_FRAME_BASED: |
| 371 | n = buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED ? 27 : 28; |
Laurent Pinchart | 233548a | 2008-07-04 00:34:59 -0300 | [diff] [blame] | 372 | if (buflen < n) { |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 373 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 374 | "interface %d FORMAT error\n", |
| 375 | dev->udev->devnum, |
| 376 | alts->desc.bInterfaceNumber); |
| 377 | return -EINVAL; |
| 378 | } |
| 379 | |
| 380 | /* Find the format descriptor from its GUID. */ |
| 381 | fmtdesc = uvc_format_by_guid(&buffer[5]); |
| 382 | |
| 383 | if (fmtdesc != NULL) { |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 384 | strlcpy(format->name, fmtdesc->name, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 385 | sizeof format->name); |
| 386 | format->fcc = fmtdesc->fcc; |
| 387 | } else { |
Laurent Pinchart | 36bd883 | 2010-01-19 09:06:22 -0300 | [diff] [blame] | 388 | uvc_printk(KERN_INFO, "Unknown video format %pUl\n", |
| 389 | &buffer[5]); |
| 390 | snprintf(format->name, sizeof(format->name), "%pUl\n", |
| 391 | &buffer[5]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 392 | format->fcc = 0; |
| 393 | } |
| 394 | |
| 395 | format->bpp = buffer[21]; |
Philipp Zabel | e1b78a3 | 2014-08-06 17:50:49 -0300 | [diff] [blame] | 396 | |
| 397 | /* Some devices report a format that doesn't match what they |
| 398 | * really send. |
| 399 | */ |
| 400 | if (dev->quirks & UVC_QUIRK_FORCE_Y8) { |
| 401 | if (format->fcc == V4L2_PIX_FMT_YUYV) { |
| 402 | strlcpy(format->name, "Greyscale 8-bit (Y8 )", |
| 403 | sizeof(format->name)); |
| 404 | format->fcc = V4L2_PIX_FMT_GREY; |
| 405 | format->bpp = 8; |
| 406 | width_multiplier = 2; |
| 407 | } |
| 408 | } |
| 409 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 410 | if (buffer[2] == UVC_VS_FORMAT_UNCOMPRESSED) { |
| 411 | ftype = UVC_VS_FRAME_UNCOMPRESSED; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 412 | } else { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 413 | ftype = UVC_VS_FRAME_FRAME_BASED; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 414 | if (buffer[27]) |
| 415 | format->flags = UVC_FMT_FLAG_COMPRESSED; |
| 416 | } |
| 417 | break; |
| 418 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 419 | case UVC_VS_FORMAT_MJPEG: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 420 | if (buflen < 11) { |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 421 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 422 | "interface %d FORMAT error\n", |
| 423 | dev->udev->devnum, |
| 424 | alts->desc.bInterfaceNumber); |
| 425 | return -EINVAL; |
| 426 | } |
| 427 | |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 428 | strlcpy(format->name, "MJPEG", sizeof format->name); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 429 | format->fcc = V4L2_PIX_FMT_MJPEG; |
| 430 | format->flags = UVC_FMT_FLAG_COMPRESSED; |
| 431 | format->bpp = 0; |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 432 | ftype = UVC_VS_FRAME_MJPEG; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 433 | break; |
| 434 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 435 | case UVC_VS_FORMAT_DV: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 436 | if (buflen < 9) { |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 437 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 438 | "interface %d FORMAT error\n", |
| 439 | dev->udev->devnum, |
| 440 | alts->desc.bInterfaceNumber); |
| 441 | return -EINVAL; |
| 442 | } |
| 443 | |
| 444 | switch (buffer[8] & 0x7f) { |
| 445 | case 0: |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 446 | strlcpy(format->name, "SD-DV", sizeof format->name); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 447 | break; |
| 448 | case 1: |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 449 | strlcpy(format->name, "SDL-DV", sizeof format->name); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 450 | break; |
| 451 | case 2: |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 452 | strlcpy(format->name, "HD-DV", sizeof format->name); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 453 | break; |
| 454 | default: |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 455 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 456 | "interface %d: unknown DV format %u\n", |
| 457 | dev->udev->devnum, |
| 458 | alts->desc.bInterfaceNumber, buffer[8]); |
| 459 | return -EINVAL; |
| 460 | } |
| 461 | |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 462 | strlcat(format->name, buffer[8] & (1 << 7) ? " 60Hz" : " 50Hz", |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 463 | sizeof format->name); |
| 464 | |
| 465 | format->fcc = V4L2_PIX_FMT_DV; |
| 466 | format->flags = UVC_FMT_FLAG_COMPRESSED | UVC_FMT_FLAG_STREAM; |
| 467 | format->bpp = 0; |
| 468 | ftype = 0; |
| 469 | |
| 470 | /* Create a dummy frame descriptor. */ |
| 471 | frame = &format->frame[0]; |
| 472 | memset(&format->frame[0], 0, sizeof format->frame[0]); |
| 473 | frame->bFrameIntervalType = 1; |
| 474 | frame->dwDefaultFrameInterval = 1; |
| 475 | frame->dwFrameInterval = *intervals; |
| 476 | *(*intervals)++ = 1; |
| 477 | format->nframes = 1; |
| 478 | break; |
| 479 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 480 | case UVC_VS_FORMAT_MPEG2TS: |
| 481 | case UVC_VS_FORMAT_STREAM_BASED: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 482 | /* Not supported yet. */ |
| 483 | default: |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 484 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 485 | "interface %d unsupported format %u\n", |
| 486 | dev->udev->devnum, alts->desc.bInterfaceNumber, |
| 487 | buffer[2]); |
| 488 | return -EINVAL; |
| 489 | } |
| 490 | |
| 491 | uvc_trace(UVC_TRACE_DESCR, "Found format %s.\n", format->name); |
| 492 | |
| 493 | buflen -= buffer[0]; |
| 494 | buffer += buffer[0]; |
| 495 | |
| 496 | /* Parse the frame descriptors. Only uncompressed, MJPEG and frame |
| 497 | * based formats have frame descriptors. |
| 498 | */ |
Laurent Pinchart | c4ed8c6 | 2009-10-08 19:38:10 -0300 | [diff] [blame] | 499 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
| 500 | buffer[2] == ftype) { |
Laurent Pinchart | 078f894 | 2009-05-06 12:30:30 -0300 | [diff] [blame] | 501 | frame = &format->frame[format->nframes]; |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 502 | if (ftype != UVC_VS_FRAME_FRAME_BASED) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 503 | n = buflen > 25 ? buffer[25] : 0; |
| 504 | else |
| 505 | n = buflen > 21 ? buffer[21] : 0; |
| 506 | |
| 507 | n = n ? n : 3; |
| 508 | |
| 509 | if (buflen < 26 + 4*n) { |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 510 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 511 | "interface %d FRAME error\n", dev->udev->devnum, |
| 512 | alts->desc.bInterfaceNumber); |
| 513 | return -EINVAL; |
| 514 | } |
| 515 | |
| 516 | frame->bFrameIndex = buffer[3]; |
| 517 | frame->bmCapabilities = buffer[4]; |
Philipp Zabel | e1b78a3 | 2014-08-06 17:50:49 -0300 | [diff] [blame] | 518 | frame->wWidth = get_unaligned_le16(&buffer[5]) |
| 519 | * width_multiplier; |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 520 | frame->wHeight = get_unaligned_le16(&buffer[7]); |
| 521 | frame->dwMinBitRate = get_unaligned_le32(&buffer[9]); |
| 522 | frame->dwMaxBitRate = get_unaligned_le32(&buffer[13]); |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 523 | if (ftype != UVC_VS_FRAME_FRAME_BASED) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 524 | frame->dwMaxVideoFrameBufferSize = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 525 | get_unaligned_le32(&buffer[17]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 526 | frame->dwDefaultFrameInterval = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 527 | get_unaligned_le32(&buffer[21]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 528 | frame->bFrameIntervalType = buffer[25]; |
| 529 | } else { |
| 530 | frame->dwMaxVideoFrameBufferSize = 0; |
| 531 | frame->dwDefaultFrameInterval = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 532 | get_unaligned_le32(&buffer[17]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 533 | frame->bFrameIntervalType = buffer[21]; |
| 534 | } |
| 535 | frame->dwFrameInterval = *intervals; |
| 536 | |
| 537 | /* Several UVC chipsets screw up dwMaxVideoFrameBufferSize |
| 538 | * completely. Observed behaviours range from setting the |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 539 | * value to 1.1x the actual frame size to hardwiring the |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 540 | * 16 low bits to 0. This results in a higher than necessary |
| 541 | * memory usage as well as a wrong image size information. For |
| 542 | * uncompressed formats this can be fixed by computing the |
| 543 | * value from the frame size. |
| 544 | */ |
| 545 | if (!(format->flags & UVC_FMT_FLAG_COMPRESSED)) |
| 546 | frame->dwMaxVideoFrameBufferSize = format->bpp |
| 547 | * frame->wWidth * frame->wHeight / 8; |
| 548 | |
| 549 | /* Some bogus devices report dwMinFrameInterval equal to |
| 550 | * dwMaxFrameInterval and have dwFrameIntervalStep set to |
| 551 | * zero. Setting all null intervals to 1 fixes the problem and |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 552 | * some other divisions by zero that could happen. |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 553 | */ |
| 554 | for (i = 0; i < n; ++i) { |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 555 | interval = get_unaligned_le32(&buffer[26+4*i]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 556 | *(*intervals)++ = interval ? interval : 1; |
| 557 | } |
| 558 | |
| 559 | /* Make sure that the default frame interval stays between |
| 560 | * the boundaries. |
| 561 | */ |
| 562 | n -= frame->bFrameIntervalType ? 1 : 2; |
| 563 | frame->dwDefaultFrameInterval = |
| 564 | min(frame->dwFrameInterval[n], |
| 565 | max(frame->dwFrameInterval[0], |
| 566 | frame->dwDefaultFrameInterval)); |
| 567 | |
Laurent Pinchart | 86d8b6a | 2010-09-16 12:37:26 -0300 | [diff] [blame] | 568 | if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { |
| 569 | frame->bFrameIntervalType = 1; |
| 570 | frame->dwFrameInterval[0] = |
| 571 | frame->dwDefaultFrameInterval; |
| 572 | } |
| 573 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 574 | uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", |
| 575 | frame->wWidth, frame->wHeight, |
| 576 | 10000000/frame->dwDefaultFrameInterval, |
| 577 | (100000000/frame->dwDefaultFrameInterval)%10); |
| 578 | |
Laurent Pinchart | 078f894 | 2009-05-06 12:30:30 -0300 | [diff] [blame] | 579 | format->nframes++; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 580 | buflen -= buffer[0]; |
| 581 | buffer += buffer[0]; |
| 582 | } |
| 583 | |
Laurent Pinchart | c4ed8c6 | 2009-10-08 19:38:10 -0300 | [diff] [blame] | 584 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
| 585 | buffer[2] == UVC_VS_STILL_IMAGE_FRAME) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 586 | buflen -= buffer[0]; |
| 587 | buffer += buffer[0]; |
| 588 | } |
| 589 | |
Laurent Pinchart | c4ed8c6 | 2009-10-08 19:38:10 -0300 | [diff] [blame] | 590 | if (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE && |
| 591 | buffer[2] == UVC_VS_COLORFORMAT) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 592 | if (buflen < 6) { |
Laurent Pinchart | b2d9cc4 | 2009-05-06 12:37:44 -0300 | [diff] [blame] | 593 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 594 | "interface %d COLORFORMAT error\n", |
| 595 | dev->udev->devnum, |
| 596 | alts->desc.bInterfaceNumber); |
| 597 | return -EINVAL; |
| 598 | } |
| 599 | |
| 600 | format->colorspace = uvc_colorspace(buffer[3]); |
| 601 | |
| 602 | buflen -= buffer[0]; |
| 603 | buffer += buffer[0]; |
| 604 | } |
| 605 | |
| 606 | return buffer - start; |
| 607 | } |
| 608 | |
| 609 | static int uvc_parse_streaming(struct uvc_device *dev, |
| 610 | struct usb_interface *intf) |
| 611 | { |
| 612 | struct uvc_streaming *streaming = NULL; |
| 613 | struct uvc_format *format; |
| 614 | struct uvc_frame *frame; |
| 615 | struct usb_host_interface *alts = &intf->altsetting[0]; |
| 616 | unsigned char *_buffer, *buffer = alts->extra; |
| 617 | int _buflen, buflen = alts->extralen; |
| 618 | unsigned int nformats = 0, nframes = 0, nintervals = 0; |
| 619 | unsigned int size, i, n, p; |
| 620 | __u32 *interval; |
| 621 | __u16 psize; |
| 622 | int ret = -EINVAL; |
| 623 | |
| 624 | if (intf->cur_altsetting->desc.bInterfaceSubClass |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 625 | != UVC_SC_VIDEOSTREAMING) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 626 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d isn't a " |
| 627 | "video streaming interface\n", dev->udev->devnum, |
| 628 | intf->altsetting[0].desc.bInterfaceNumber); |
| 629 | return -EINVAL; |
| 630 | } |
| 631 | |
| 632 | if (usb_driver_claim_interface(&uvc_driver.driver, intf, dev)) { |
| 633 | uvc_trace(UVC_TRACE_DESCR, "device %d interface %d is already " |
| 634 | "claimed\n", dev->udev->devnum, |
| 635 | intf->altsetting[0].desc.bInterfaceNumber); |
| 636 | return -EINVAL; |
| 637 | } |
| 638 | |
| 639 | streaming = kzalloc(sizeof *streaming, GFP_KERNEL); |
| 640 | if (streaming == NULL) { |
| 641 | usb_driver_release_interface(&uvc_driver.driver, intf); |
| 642 | return -EINVAL; |
| 643 | } |
| 644 | |
| 645 | mutex_init(&streaming->mutex); |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 646 | streaming->dev = dev; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 647 | streaming->intf = usb_get_intf(intf); |
| 648 | streaming->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; |
| 649 | |
| 650 | /* The Pico iMage webcam has its class-specific interface descriptors |
| 651 | * after the endpoint descriptors. |
| 652 | */ |
| 653 | if (buflen == 0) { |
| 654 | for (i = 0; i < alts->desc.bNumEndpoints; ++i) { |
| 655 | struct usb_host_endpoint *ep = &alts->endpoint[i]; |
| 656 | |
| 657 | if (ep->extralen == 0) |
| 658 | continue; |
| 659 | |
| 660 | if (ep->extralen > 2 && |
| 661 | ep->extra[1] == USB_DT_CS_INTERFACE) { |
| 662 | uvc_trace(UVC_TRACE_DESCR, "trying extra data " |
| 663 | "from endpoint %u.\n", i); |
| 664 | buffer = alts->endpoint[i].extra; |
| 665 | buflen = alts->endpoint[i].extralen; |
| 666 | break; |
| 667 | } |
| 668 | } |
| 669 | } |
| 670 | |
| 671 | /* Skip the standard interface descriptors. */ |
| 672 | while (buflen > 2 && buffer[1] != USB_DT_CS_INTERFACE) { |
| 673 | buflen -= buffer[0]; |
| 674 | buffer += buffer[0]; |
| 675 | } |
| 676 | |
| 677 | if (buflen <= 2) { |
| 678 | uvc_trace(UVC_TRACE_DESCR, "no class-specific streaming " |
| 679 | "interface descriptors found.\n"); |
| 680 | goto error; |
| 681 | } |
| 682 | |
| 683 | /* Parse the header descriptor. */ |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 684 | switch (buffer[2]) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 685 | case UVC_VS_OUTPUT_HEADER: |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 686 | streaming->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; |
| 687 | size = 9; |
| 688 | break; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 689 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 690 | case UVC_VS_INPUT_HEADER: |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 691 | streaming->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 692 | size = 13; |
| 693 | break; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 694 | |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 695 | default: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 696 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
| 697 | "%d HEADER descriptor not found.\n", dev->udev->devnum, |
| 698 | alts->desc.bInterfaceNumber); |
| 699 | goto error; |
| 700 | } |
| 701 | |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 702 | p = buflen >= 4 ? buffer[3] : 0; |
| 703 | n = buflen >= size ? buffer[size-1] : 0; |
| 704 | |
| 705 | if (buflen < size + p*n) { |
| 706 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
| 707 | "interface %d HEADER descriptor is invalid.\n", |
| 708 | dev->udev->devnum, alts->desc.bInterfaceNumber); |
| 709 | goto error; |
| 710 | } |
| 711 | |
| 712 | streaming->header.bNumFormats = p; |
| 713 | streaming->header.bEndpointAddress = buffer[6]; |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 714 | if (buffer[2] == UVC_VS_INPUT_HEADER) { |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 715 | streaming->header.bmInfo = buffer[7]; |
| 716 | streaming->header.bTerminalLink = buffer[8]; |
| 717 | streaming->header.bStillCaptureMethod = buffer[9]; |
| 718 | streaming->header.bTriggerSupport = buffer[10]; |
| 719 | streaming->header.bTriggerUsage = buffer[11]; |
| 720 | } else { |
| 721 | streaming->header.bTerminalLink = buffer[7]; |
| 722 | } |
| 723 | streaming->header.bControlSize = n; |
| 724 | |
Julia Lawall | 0b21d55 | 2010-07-01 01:33:15 -0300 | [diff] [blame] | 725 | streaming->header.bmaControls = kmemdup(&buffer[size], p * n, |
| 726 | GFP_KERNEL); |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 727 | if (streaming->header.bmaControls == NULL) { |
| 728 | ret = -ENOMEM; |
| 729 | goto error; |
| 730 | } |
| 731 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 732 | buflen -= buffer[0]; |
| 733 | buffer += buffer[0]; |
| 734 | |
| 735 | _buffer = buffer; |
| 736 | _buflen = buflen; |
| 737 | |
| 738 | /* Count the format and frame descriptors. */ |
Laurent Pinchart | 042e143 | 2009-06-26 11:30:09 -0300 | [diff] [blame] | 739 | while (_buflen > 2 && _buffer[1] == USB_DT_CS_INTERFACE) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 740 | switch (_buffer[2]) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 741 | case UVC_VS_FORMAT_UNCOMPRESSED: |
| 742 | case UVC_VS_FORMAT_MJPEG: |
| 743 | case UVC_VS_FORMAT_FRAME_BASED: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 744 | nformats++; |
| 745 | break; |
| 746 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 747 | case UVC_VS_FORMAT_DV: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 748 | /* DV format has no frame descriptor. We will create a |
| 749 | * dummy frame descriptor with a dummy frame interval. |
| 750 | */ |
| 751 | nformats++; |
| 752 | nframes++; |
| 753 | nintervals++; |
| 754 | break; |
| 755 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 756 | case UVC_VS_FORMAT_MPEG2TS: |
| 757 | case UVC_VS_FORMAT_STREAM_BASED: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 758 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming " |
| 759 | "interface %d FORMAT %u is not supported.\n", |
| 760 | dev->udev->devnum, |
| 761 | alts->desc.bInterfaceNumber, _buffer[2]); |
| 762 | break; |
| 763 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 764 | case UVC_VS_FRAME_UNCOMPRESSED: |
| 765 | case UVC_VS_FRAME_MJPEG: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 766 | nframes++; |
| 767 | if (_buflen > 25) |
| 768 | nintervals += _buffer[25] ? _buffer[25] : 3; |
| 769 | break; |
| 770 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 771 | case UVC_VS_FRAME_FRAME_BASED: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 772 | nframes++; |
| 773 | if (_buflen > 21) |
| 774 | nintervals += _buffer[21] ? _buffer[21] : 3; |
| 775 | break; |
| 776 | } |
| 777 | |
| 778 | _buflen -= _buffer[0]; |
| 779 | _buffer += _buffer[0]; |
| 780 | } |
| 781 | |
| 782 | if (nformats == 0) { |
| 783 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
| 784 | "%d has no supported formats defined.\n", |
| 785 | dev->udev->devnum, alts->desc.bInterfaceNumber); |
| 786 | goto error; |
| 787 | } |
| 788 | |
| 789 | size = nformats * sizeof *format + nframes * sizeof *frame |
| 790 | + nintervals * sizeof *interval; |
| 791 | format = kzalloc(size, GFP_KERNEL); |
| 792 | if (format == NULL) { |
| 793 | ret = -ENOMEM; |
| 794 | goto error; |
| 795 | } |
| 796 | |
| 797 | frame = (struct uvc_frame *)&format[nformats]; |
| 798 | interval = (__u32 *)&frame[nframes]; |
| 799 | |
| 800 | streaming->format = format; |
| 801 | streaming->nformats = nformats; |
| 802 | |
| 803 | /* Parse the format descriptors. */ |
Laurent Pinchart | 042e143 | 2009-06-26 11:30:09 -0300 | [diff] [blame] | 804 | while (buflen > 2 && buffer[1] == USB_DT_CS_INTERFACE) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 805 | switch (buffer[2]) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 806 | case UVC_VS_FORMAT_UNCOMPRESSED: |
| 807 | case UVC_VS_FORMAT_MJPEG: |
| 808 | case UVC_VS_FORMAT_DV: |
| 809 | case UVC_VS_FORMAT_FRAME_BASED: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 810 | format->frame = frame; |
| 811 | ret = uvc_parse_format(dev, streaming, format, |
| 812 | &interval, buffer, buflen); |
| 813 | if (ret < 0) |
| 814 | goto error; |
| 815 | |
| 816 | frame += format->nframes; |
| 817 | format++; |
| 818 | |
| 819 | buflen -= ret; |
| 820 | buffer += ret; |
| 821 | continue; |
| 822 | |
| 823 | default: |
| 824 | break; |
| 825 | } |
| 826 | |
| 827 | buflen -= buffer[0]; |
| 828 | buffer += buffer[0]; |
| 829 | } |
| 830 | |
Laurent Pinchart | c4ed8c6 | 2009-10-08 19:38:10 -0300 | [diff] [blame] | 831 | if (buflen) |
| 832 | uvc_trace(UVC_TRACE_DESCR, "device %d videostreaming interface " |
| 833 | "%d has %u bytes of trailing descriptor garbage.\n", |
| 834 | dev->udev->devnum, alts->desc.bInterfaceNumber, buflen); |
| 835 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 836 | /* Parse the alternate settings to find the maximum bandwidth. */ |
| 837 | for (i = 0; i < intf->num_altsetting; ++i) { |
| 838 | struct usb_host_endpoint *ep; |
| 839 | alts = &intf->altsetting[i]; |
| 840 | ep = uvc_find_endpoint(alts, |
| 841 | streaming->header.bEndpointAddress); |
| 842 | if (ep == NULL) |
| 843 | continue; |
| 844 | |
| 845 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
| 846 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); |
| 847 | if (psize > streaming->maxpsize) |
| 848 | streaming->maxpsize = psize; |
| 849 | } |
| 850 | |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 851 | list_add_tail(&streaming->list, &dev->streams); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 852 | return 0; |
| 853 | |
| 854 | error: |
| 855 | usb_driver_release_interface(&uvc_driver.driver, intf); |
| 856 | usb_put_intf(intf); |
| 857 | kfree(streaming->format); |
| 858 | kfree(streaming->header.bmaControls); |
| 859 | kfree(streaming); |
| 860 | return ret; |
| 861 | } |
| 862 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 863 | static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id, |
| 864 | unsigned int num_pads, unsigned int extra_size) |
| 865 | { |
| 866 | struct uvc_entity *entity; |
| 867 | unsigned int num_inputs; |
| 868 | unsigned int size; |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 869 | unsigned int i; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 870 | |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 871 | extra_size = ALIGN(extra_size, sizeof(*entity->pads)); |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 872 | num_inputs = (type & UVC_TERM_OUTPUT) ? num_pads : num_pads - 1; |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 873 | size = sizeof(*entity) + extra_size + sizeof(*entity->pads) * num_pads |
| 874 | + num_inputs; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 875 | entity = kzalloc(size, GFP_KERNEL); |
| 876 | if (entity == NULL) |
| 877 | return NULL; |
| 878 | |
| 879 | entity->id = id; |
| 880 | entity->type = type; |
| 881 | |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 882 | entity->num_links = 0; |
| 883 | entity->num_pads = num_pads; |
| 884 | entity->pads = ((void *)(entity + 1)) + extra_size; |
| 885 | |
| 886 | for (i = 0; i < num_inputs; ++i) |
| 887 | entity->pads[i].flags = MEDIA_PAD_FL_SINK; |
| 888 | if (!UVC_ENTITY_IS_OTERM(entity)) |
| 889 | entity->pads[num_pads-1].flags = MEDIA_PAD_FL_SOURCE; |
| 890 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 891 | entity->bNrInPins = num_inputs; |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 892 | entity->baSourceID = (__u8 *)(&entity->pads[num_pads]); |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 893 | |
| 894 | return entity; |
| 895 | } |
| 896 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 897 | /* Parse vendor-specific extensions. */ |
| 898 | static int uvc_parse_vendor_control(struct uvc_device *dev, |
| 899 | const unsigned char *buffer, int buflen) |
| 900 | { |
| 901 | struct usb_device *udev = dev->udev; |
| 902 | struct usb_host_interface *alts = dev->intf->cur_altsetting; |
| 903 | struct uvc_entity *unit; |
| 904 | unsigned int n, p; |
| 905 | int handled = 0; |
| 906 | |
| 907 | switch (le16_to_cpu(dev->udev->descriptor.idVendor)) { |
| 908 | case 0x046d: /* Logitech */ |
| 909 | if (buffer[1] != 0x41 || buffer[2] != 0x01) |
| 910 | break; |
| 911 | |
| 912 | /* Logitech implements several vendor specific functions |
| 913 | * through vendor specific extension units (LXU). |
| 914 | * |
| 915 | * The LXU descriptors are similar to XU descriptors |
| 916 | * (see "USB Device Video Class for Video Devices", section |
| 917 | * 3.7.2.6 "Extension Unit Descriptor") with the following |
| 918 | * differences: |
| 919 | * |
| 920 | * ---------------------------------------------------------- |
| 921 | * 0 bLength 1 Number |
| 922 | * Size of this descriptor, in bytes: 24+p+n*2 |
| 923 | * ---------------------------------------------------------- |
| 924 | * 23+p+n bmControlsType N Bitmap |
| 925 | * Individual bits in the set are defined: |
| 926 | * 0: Absolute |
| 927 | * 1: Relative |
| 928 | * |
| 929 | * This bitset is mapped exactly the same as bmControls. |
| 930 | * ---------------------------------------------------------- |
| 931 | * 23+p+n*2 bReserved 1 Boolean |
| 932 | * ---------------------------------------------------------- |
| 933 | * 24+p+n*2 iExtension 1 Index |
| 934 | * Index of a string descriptor that describes this |
| 935 | * extension unit. |
| 936 | * ---------------------------------------------------------- |
| 937 | */ |
| 938 | p = buflen >= 22 ? buffer[21] : 0; |
| 939 | n = buflen >= 25 + p ? buffer[22+p] : 0; |
| 940 | |
| 941 | if (buflen < 25 + p + 2*n) { |
| 942 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 943 | "interface %d EXTENSION_UNIT error\n", |
| 944 | udev->devnum, alts->desc.bInterfaceNumber); |
| 945 | break; |
| 946 | } |
| 947 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 948 | unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], |
| 949 | p + 1, 2*n); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 950 | if (unit == NULL) |
| 951 | return -ENOMEM; |
| 952 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 953 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
| 954 | unit->extension.bNumControls = buffer[20]; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 955 | memcpy(unit->baSourceID, &buffer[22], p); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 956 | unit->extension.bControlSize = buffer[22+p]; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 957 | unit->extension.bmControls = (__u8 *)unit + sizeof(*unit); |
| 958 | unit->extension.bmControlsType = (__u8 *)unit + sizeof(*unit) |
| 959 | + n; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 960 | memcpy(unit->extension.bmControls, &buffer[23+p], 2*n); |
| 961 | |
| 962 | if (buffer[24+p+2*n] != 0) |
| 963 | usb_string(udev, buffer[24+p+2*n], unit->name, |
| 964 | sizeof unit->name); |
| 965 | else |
| 966 | sprintf(unit->name, "Extension %u", buffer[3]); |
| 967 | |
| 968 | list_add_tail(&unit->list, &dev->entities); |
| 969 | handled = 1; |
| 970 | break; |
| 971 | } |
| 972 | |
| 973 | return handled; |
| 974 | } |
| 975 | |
| 976 | static int uvc_parse_standard_control(struct uvc_device *dev, |
| 977 | const unsigned char *buffer, int buflen) |
| 978 | { |
| 979 | struct usb_device *udev = dev->udev; |
| 980 | struct uvc_entity *unit, *term; |
| 981 | struct usb_interface *intf; |
| 982 | struct usb_host_interface *alts = dev->intf->cur_altsetting; |
| 983 | unsigned int i, n, p, len; |
| 984 | __u16 type; |
| 985 | |
| 986 | switch (buffer[2]) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 987 | case UVC_VC_HEADER: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 988 | n = buflen >= 12 ? buffer[11] : 0; |
| 989 | |
Oliver Neukum | daf41ac | 2014-01-23 07:28:24 -0300 | [diff] [blame] | 990 | if (buflen < 12 + n) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 991 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 992 | "interface %d HEADER error\n", udev->devnum, |
| 993 | alts->desc.bInterfaceNumber); |
| 994 | return -EINVAL; |
| 995 | } |
| 996 | |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 997 | dev->uvc_version = get_unaligned_le16(&buffer[3]); |
| 998 | dev->clock_frequency = get_unaligned_le32(&buffer[7]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 999 | |
| 1000 | /* Parse all USB Video Streaming interfaces. */ |
| 1001 | for (i = 0; i < n; ++i) { |
| 1002 | intf = usb_ifnum_to_if(udev, buffer[12+i]); |
| 1003 | if (intf == NULL) { |
| 1004 | uvc_trace(UVC_TRACE_DESCR, "device %d " |
| 1005 | "interface %d doesn't exists\n", |
| 1006 | udev->devnum, i); |
| 1007 | continue; |
| 1008 | } |
| 1009 | |
| 1010 | uvc_parse_streaming(dev, intf); |
| 1011 | } |
| 1012 | break; |
| 1013 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1014 | case UVC_VC_INPUT_TERMINAL: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1015 | if (buflen < 8) { |
| 1016 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1017 | "interface %d INPUT_TERMINAL error\n", |
| 1018 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1019 | return -EINVAL; |
| 1020 | } |
| 1021 | |
| 1022 | /* Make sure the terminal type MSB is not null, otherwise it |
| 1023 | * could be confused with a unit. |
| 1024 | */ |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1025 | type = get_unaligned_le16(&buffer[4]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1026 | if ((type & 0xff00) == 0) { |
| 1027 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1028 | "interface %d INPUT_TERMINAL %d has invalid " |
| 1029 | "type 0x%04x, skipping\n", udev->devnum, |
| 1030 | alts->desc.bInterfaceNumber, |
| 1031 | buffer[3], type); |
| 1032 | return 0; |
| 1033 | } |
| 1034 | |
| 1035 | n = 0; |
| 1036 | p = 0; |
| 1037 | len = 8; |
| 1038 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1039 | if (type == UVC_ITT_CAMERA) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1040 | n = buflen >= 15 ? buffer[14] : 0; |
| 1041 | len = 15; |
| 1042 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1043 | } else if (type == UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1044 | n = buflen >= 9 ? buffer[8] : 0; |
| 1045 | p = buflen >= 10 + n ? buffer[9+n] : 0; |
| 1046 | len = 10; |
| 1047 | } |
| 1048 | |
| 1049 | if (buflen < len + n + p) { |
| 1050 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1051 | "interface %d INPUT_TERMINAL error\n", |
| 1052 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1053 | return -EINVAL; |
| 1054 | } |
| 1055 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1056 | term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], |
| 1057 | 1, n + p); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1058 | if (term == NULL) |
| 1059 | return -ENOMEM; |
| 1060 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1061 | if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1062 | term->camera.bControlSize = n; |
| 1063 | term->camera.bmControls = (__u8 *)term + sizeof *term; |
| 1064 | term->camera.wObjectiveFocalLengthMin = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1065 | get_unaligned_le16(&buffer[8]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1066 | term->camera.wObjectiveFocalLengthMax = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1067 | get_unaligned_le16(&buffer[10]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1068 | term->camera.wOcularFocalLength = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1069 | get_unaligned_le16(&buffer[12]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1070 | memcpy(term->camera.bmControls, &buffer[15], n); |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1071 | } else if (UVC_ENTITY_TYPE(term) == |
| 1072 | UVC_ITT_MEDIA_TRANSPORT_INPUT) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1073 | term->media.bControlSize = n; |
| 1074 | term->media.bmControls = (__u8 *)term + sizeof *term; |
| 1075 | term->media.bTransportModeSize = p; |
| 1076 | term->media.bmTransportModes = (__u8 *)term |
| 1077 | + sizeof *term + n; |
| 1078 | memcpy(term->media.bmControls, &buffer[9], n); |
| 1079 | memcpy(term->media.bmTransportModes, &buffer[10+n], p); |
| 1080 | } |
| 1081 | |
| 1082 | if (buffer[7] != 0) |
| 1083 | usb_string(udev, buffer[7], term->name, |
| 1084 | sizeof term->name); |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1085 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1086 | sprintf(term->name, "Camera %u", buffer[3]); |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1087 | else if (UVC_ENTITY_TYPE(term) == UVC_ITT_MEDIA_TRANSPORT_INPUT) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1088 | sprintf(term->name, "Media %u", buffer[3]); |
| 1089 | else |
| 1090 | sprintf(term->name, "Input %u", buffer[3]); |
| 1091 | |
| 1092 | list_add_tail(&term->list, &dev->entities); |
| 1093 | break; |
| 1094 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1095 | case UVC_VC_OUTPUT_TERMINAL: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1096 | if (buflen < 9) { |
| 1097 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1098 | "interface %d OUTPUT_TERMINAL error\n", |
| 1099 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1100 | return -EINVAL; |
| 1101 | } |
| 1102 | |
| 1103 | /* Make sure the terminal type MSB is not null, otherwise it |
| 1104 | * could be confused with a unit. |
| 1105 | */ |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1106 | type = get_unaligned_le16(&buffer[4]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1107 | if ((type & 0xff00) == 0) { |
| 1108 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1109 | "interface %d OUTPUT_TERMINAL %d has invalid " |
| 1110 | "type 0x%04x, skipping\n", udev->devnum, |
| 1111 | alts->desc.bInterfaceNumber, buffer[3], type); |
| 1112 | return 0; |
| 1113 | } |
| 1114 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1115 | term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], |
| 1116 | 1, 0); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1117 | if (term == NULL) |
| 1118 | return -ENOMEM; |
| 1119 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1120 | memcpy(term->baSourceID, &buffer[7], 1); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1121 | |
| 1122 | if (buffer[8] != 0) |
| 1123 | usb_string(udev, buffer[8], term->name, |
| 1124 | sizeof term->name); |
| 1125 | else |
| 1126 | sprintf(term->name, "Output %u", buffer[3]); |
| 1127 | |
| 1128 | list_add_tail(&term->list, &dev->entities); |
| 1129 | break; |
| 1130 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1131 | case UVC_VC_SELECTOR_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1132 | p = buflen >= 5 ? buffer[4] : 0; |
| 1133 | |
| 1134 | if (buflen < 5 || buflen < 6 + p) { |
| 1135 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1136 | "interface %d SELECTOR_UNIT error\n", |
| 1137 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1138 | return -EINVAL; |
| 1139 | } |
| 1140 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1141 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1142 | if (unit == NULL) |
| 1143 | return -ENOMEM; |
| 1144 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1145 | memcpy(unit->baSourceID, &buffer[5], p); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1146 | |
| 1147 | if (buffer[5+p] != 0) |
| 1148 | usb_string(udev, buffer[5+p], unit->name, |
| 1149 | sizeof unit->name); |
| 1150 | else |
| 1151 | sprintf(unit->name, "Selector %u", buffer[3]); |
| 1152 | |
| 1153 | list_add_tail(&unit->list, &dev->entities); |
| 1154 | break; |
| 1155 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1156 | case UVC_VC_PROCESSING_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1157 | n = buflen >= 8 ? buffer[7] : 0; |
| 1158 | p = dev->uvc_version >= 0x0110 ? 10 : 9; |
| 1159 | |
| 1160 | if (buflen < p + n) { |
| 1161 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1162 | "interface %d PROCESSING_UNIT error\n", |
| 1163 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1164 | return -EINVAL; |
| 1165 | } |
| 1166 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1167 | unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1168 | if (unit == NULL) |
| 1169 | return -ENOMEM; |
| 1170 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1171 | memcpy(unit->baSourceID, &buffer[4], 1); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1172 | unit->processing.wMaxMultiplier = |
Michael Hennerich | 9bc6218 | 2008-11-11 14:11:28 -0300 | [diff] [blame] | 1173 | get_unaligned_le16(&buffer[5]); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1174 | unit->processing.bControlSize = buffer[7]; |
| 1175 | unit->processing.bmControls = (__u8 *)unit + sizeof *unit; |
| 1176 | memcpy(unit->processing.bmControls, &buffer[8], n); |
| 1177 | if (dev->uvc_version >= 0x0110) |
| 1178 | unit->processing.bmVideoStandards = buffer[9+n]; |
| 1179 | |
| 1180 | if (buffer[8+n] != 0) |
| 1181 | usb_string(udev, buffer[8+n], unit->name, |
| 1182 | sizeof unit->name); |
| 1183 | else |
| 1184 | sprintf(unit->name, "Processing %u", buffer[3]); |
| 1185 | |
| 1186 | list_add_tail(&unit->list, &dev->entities); |
| 1187 | break; |
| 1188 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1189 | case UVC_VC_EXTENSION_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1190 | p = buflen >= 22 ? buffer[21] : 0; |
| 1191 | n = buflen >= 24 + p ? buffer[22+p] : 0; |
| 1192 | |
| 1193 | if (buflen < 24 + p + n) { |
| 1194 | uvc_trace(UVC_TRACE_DESCR, "device %d videocontrol " |
| 1195 | "interface %d EXTENSION_UNIT error\n", |
| 1196 | udev->devnum, alts->desc.bInterfaceNumber); |
| 1197 | return -EINVAL; |
| 1198 | } |
| 1199 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1200 | unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1201 | if (unit == NULL) |
| 1202 | return -ENOMEM; |
| 1203 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1204 | memcpy(unit->extension.guidExtensionCode, &buffer[4], 16); |
| 1205 | unit->extension.bNumControls = buffer[20]; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1206 | memcpy(unit->baSourceID, &buffer[22], p); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1207 | unit->extension.bControlSize = buffer[22+p]; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1208 | unit->extension.bmControls = (__u8 *)unit + sizeof *unit; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1209 | memcpy(unit->extension.bmControls, &buffer[23+p], n); |
| 1210 | |
| 1211 | if (buffer[23+p+n] != 0) |
| 1212 | usb_string(udev, buffer[23+p+n], unit->name, |
| 1213 | sizeof unit->name); |
| 1214 | else |
| 1215 | sprintf(unit->name, "Extension %u", buffer[3]); |
| 1216 | |
| 1217 | list_add_tail(&unit->list, &dev->entities); |
| 1218 | break; |
| 1219 | |
| 1220 | default: |
| 1221 | uvc_trace(UVC_TRACE_DESCR, "Found an unknown CS_INTERFACE " |
| 1222 | "descriptor (%u)\n", buffer[2]); |
| 1223 | break; |
| 1224 | } |
| 1225 | |
| 1226 | return 0; |
| 1227 | } |
| 1228 | |
| 1229 | static int uvc_parse_control(struct uvc_device *dev) |
| 1230 | { |
| 1231 | struct usb_host_interface *alts = dev->intf->cur_altsetting; |
| 1232 | unsigned char *buffer = alts->extra; |
| 1233 | int buflen = alts->extralen; |
| 1234 | int ret; |
| 1235 | |
| 1236 | /* Parse the default alternate setting only, as the UVC specification |
| 1237 | * defines a single alternate setting, the default alternate setting |
| 1238 | * zero. |
| 1239 | */ |
| 1240 | |
| 1241 | while (buflen > 2) { |
| 1242 | if (uvc_parse_vendor_control(dev, buffer, buflen) || |
| 1243 | buffer[1] != USB_DT_CS_INTERFACE) |
| 1244 | goto next_descriptor; |
| 1245 | |
| 1246 | if ((ret = uvc_parse_standard_control(dev, buffer, buflen)) < 0) |
| 1247 | return ret; |
| 1248 | |
| 1249 | next_descriptor: |
| 1250 | buflen -= buffer[0]; |
| 1251 | buffer += buffer[0]; |
| 1252 | } |
| 1253 | |
Laurent Pinchart | 538e7a0 | 2008-12-28 20:26:32 -0300 | [diff] [blame] | 1254 | /* Check if the optional status endpoint is present. Built-in iSight |
| 1255 | * webcams have an interrupt endpoint but spit proprietary data that |
| 1256 | * don't conform to the UVC status endpoint messages. Don't try to |
| 1257 | * handle the interrupt endpoint for those cameras. |
| 1258 | */ |
| 1259 | if (alts->desc.bNumEndpoints == 1 && |
| 1260 | !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1261 | struct usb_host_endpoint *ep = &alts->endpoint[0]; |
| 1262 | struct usb_endpoint_descriptor *desc = &ep->desc; |
| 1263 | |
| 1264 | if (usb_endpoint_is_int_in(desc) && |
| 1265 | le16_to_cpu(desc->wMaxPacketSize) >= 8 && |
| 1266 | desc->bInterval != 0) { |
| 1267 | uvc_trace(UVC_TRACE_DESCR, "Found a Status endpoint " |
| 1268 | "(addr %02x).\n", desc->bEndpointAddress); |
| 1269 | dev->int_ep = ep; |
| 1270 | } |
| 1271 | } |
| 1272 | |
| 1273 | return 0; |
| 1274 | } |
| 1275 | |
| 1276 | /* ------------------------------------------------------------------------ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1277 | * UVC device scan |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1278 | */ |
| 1279 | |
| 1280 | /* |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1281 | * Scan the UVC descriptors to locate a chain starting at an Output Terminal |
| 1282 | * and containing the following units: |
| 1283 | * |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1284 | * - one or more Output Terminals (USB Streaming or Display) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1285 | * - zero or one Processing Unit |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1286 | * - zero, one or more single-input Selector Units |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1287 | * - zero or one multiple-input Selector Units, provided all inputs are |
| 1288 | * connected to input terminals |
| 1289 | * - zero, one or mode single-input Extension Units |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 1290 | * - one or more Input Terminals (Camera, External or USB Streaming) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1291 | * |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1292 | * The terminal and units must match on of the following structures: |
| 1293 | * |
| 1294 | * ITT_*(0) -> +---------+ +---------+ +---------+ -> TT_STREAMING(0) |
| 1295 | * ... | SU{0,1} | -> | PU{0,1} | -> | XU{0,n} | ... |
| 1296 | * ITT_*(n) -> +---------+ +---------+ +---------+ -> TT_STREAMING(n) |
| 1297 | * |
| 1298 | * +---------+ +---------+ -> OTT_*(0) |
| 1299 | * TT_STREAMING -> | PU{0,1} | -> | XU{0,n} | ... |
| 1300 | * +---------+ +---------+ -> OTT_*(n) |
| 1301 | * |
| 1302 | * The Processing Unit and Extension Units can be in any order. Additional |
| 1303 | * Extension Units connected to the main chain as single-unit branches are |
| 1304 | * also supported. Single-input Selector Units are ignored. |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1305 | */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1306 | static int uvc_scan_chain_entity(struct uvc_video_chain *chain, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1307 | struct uvc_entity *entity) |
| 1308 | { |
| 1309 | switch (UVC_ENTITY_TYPE(entity)) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1310 | case UVC_VC_EXTENSION_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1311 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1312 | printk(" <- XU %d", entity->id); |
| 1313 | |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1314 | if (entity->bNrInPins != 1) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1315 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d has more " |
| 1316 | "than 1 input pin.\n", entity->id); |
| 1317 | return -1; |
| 1318 | } |
| 1319 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1320 | break; |
| 1321 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1322 | case UVC_VC_PROCESSING_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1323 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1324 | printk(" <- PU %d", entity->id); |
| 1325 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1326 | if (chain->processing != NULL) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1327 | uvc_trace(UVC_TRACE_DESCR, "Found multiple " |
| 1328 | "Processing Units in chain.\n"); |
| 1329 | return -1; |
| 1330 | } |
| 1331 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1332 | chain->processing = entity; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1333 | break; |
| 1334 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1335 | case UVC_VC_SELECTOR_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1336 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1337 | printk(" <- SU %d", entity->id); |
| 1338 | |
| 1339 | /* Single-input selector units are ignored. */ |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1340 | if (entity->bNrInPins == 1) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1341 | break; |
| 1342 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1343 | if (chain->selector != NULL) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1344 | uvc_trace(UVC_TRACE_DESCR, "Found multiple Selector " |
| 1345 | "Units in chain.\n"); |
| 1346 | return -1; |
| 1347 | } |
| 1348 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1349 | chain->selector = entity; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1350 | break; |
| 1351 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1352 | case UVC_ITT_VENDOR_SPECIFIC: |
| 1353 | case UVC_ITT_CAMERA: |
| 1354 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1355 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1356 | printk(" <- IT %d\n", entity->id); |
| 1357 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1358 | break; |
| 1359 | |
Laurent Pinchart | 4093a5c | 2011-02-23 11:19:17 -0300 | [diff] [blame] | 1360 | case UVC_OTT_VENDOR_SPECIFIC: |
| 1361 | case UVC_OTT_DISPLAY: |
| 1362 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: |
| 1363 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1364 | printk(" OT %d", entity->id); |
| 1365 | |
| 1366 | break; |
| 1367 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1368 | case UVC_TT_STREAMING: |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1369 | if (UVC_ENTITY_IS_ITERM(entity)) { |
| 1370 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1371 | printk(" <- IT %d\n", entity->id); |
| 1372 | } else { |
| 1373 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1374 | printk(" OT %d", entity->id); |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 1375 | } |
| 1376 | |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 1377 | break; |
| 1378 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1379 | default: |
| 1380 | uvc_trace(UVC_TRACE_DESCR, "Unsupported entity type " |
| 1381 | "0x%04x found in chain.\n", UVC_ENTITY_TYPE(entity)); |
| 1382 | return -1; |
| 1383 | } |
| 1384 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1385 | list_add_tail(&entity->chain, &chain->entities); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1386 | return 0; |
| 1387 | } |
| 1388 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1389 | static int uvc_scan_chain_forward(struct uvc_video_chain *chain, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1390 | struct uvc_entity *entity, struct uvc_entity *prev) |
| 1391 | { |
| 1392 | struct uvc_entity *forward; |
| 1393 | int found; |
| 1394 | |
| 1395 | /* Forward scan */ |
| 1396 | forward = NULL; |
| 1397 | found = 0; |
| 1398 | |
| 1399 | while (1) { |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1400 | forward = uvc_entity_by_reference(chain->dev, entity->id, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1401 | forward); |
| 1402 | if (forward == NULL) |
| 1403 | break; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1404 | if (forward == prev) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1405 | continue; |
| 1406 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1407 | switch (UVC_ENTITY_TYPE(forward)) { |
| 1408 | case UVC_VC_EXTENSION_UNIT: |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1409 | if (forward->bNrInPins != 1) { |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1410 | uvc_trace(UVC_TRACE_DESCR, "Extension unit %d " |
| 1411 | "has more than 1 input pin.\n", |
| 1412 | entity->id); |
| 1413 | return -EINVAL; |
| 1414 | } |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1415 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1416 | list_add_tail(&forward->chain, &chain->entities); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1417 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
| 1418 | if (!found) |
| 1419 | printk(" (->"); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1420 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1421 | printk(" XU %d", forward->id); |
| 1422 | found = 1; |
| 1423 | } |
| 1424 | break; |
| 1425 | |
| 1426 | case UVC_OTT_VENDOR_SPECIFIC: |
| 1427 | case UVC_OTT_DISPLAY: |
| 1428 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: |
| 1429 | case UVC_TT_STREAMING: |
| 1430 | if (UVC_ENTITY_IS_ITERM(forward)) { |
| 1431 | uvc_trace(UVC_TRACE_DESCR, "Unsupported input " |
| 1432 | "terminal %u.\n", forward->id); |
| 1433 | return -EINVAL; |
| 1434 | } |
| 1435 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1436 | list_add_tail(&forward->chain, &chain->entities); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1437 | if (uvc_trace_param & UVC_TRACE_PROBE) { |
| 1438 | if (!found) |
| 1439 | printk(" (->"); |
| 1440 | |
| 1441 | printk(" OT %d", forward->id); |
| 1442 | found = 1; |
| 1443 | } |
| 1444 | break; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1445 | } |
| 1446 | } |
| 1447 | if (found) |
| 1448 | printk(")"); |
| 1449 | |
| 1450 | return 0; |
| 1451 | } |
| 1452 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1453 | static int uvc_scan_chain_backward(struct uvc_video_chain *chain, |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1454 | struct uvc_entity **_entity) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1455 | { |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1456 | struct uvc_entity *entity = *_entity; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1457 | struct uvc_entity *term; |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1458 | int id = -EINVAL, i; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1459 | |
| 1460 | switch (UVC_ENTITY_TYPE(entity)) { |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1461 | case UVC_VC_EXTENSION_UNIT: |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1462 | case UVC_VC_PROCESSING_UNIT: |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1463 | id = entity->baSourceID[0]; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1464 | break; |
| 1465 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 1466 | case UVC_VC_SELECTOR_UNIT: |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1467 | /* Single-input selector units are ignored. */ |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1468 | if (entity->bNrInPins == 1) { |
| 1469 | id = entity->baSourceID[0]; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1470 | break; |
| 1471 | } |
| 1472 | |
| 1473 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1474 | printk(" <- IT"); |
| 1475 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1476 | chain->selector = entity; |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1477 | for (i = 0; i < entity->bNrInPins; ++i) { |
| 1478 | id = entity->baSourceID[i]; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1479 | term = uvc_entity_by_id(chain->dev, id); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1480 | if (term == NULL || !UVC_ENTITY_IS_ITERM(term)) { |
| 1481 | uvc_trace(UVC_TRACE_DESCR, "Selector unit %d " |
| 1482 | "input %d isn't connected to an " |
| 1483 | "input terminal\n", entity->id, i); |
| 1484 | return -1; |
| 1485 | } |
| 1486 | |
| 1487 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1488 | printk(" %d", term->id); |
| 1489 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1490 | list_add_tail(&term->chain, &chain->entities); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1491 | uvc_scan_chain_forward(chain, term, entity); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1492 | } |
| 1493 | |
| 1494 | if (uvc_trace_param & UVC_TRACE_PROBE) |
| 1495 | printk("\n"); |
| 1496 | |
| 1497 | id = 0; |
| 1498 | break; |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1499 | |
| 1500 | case UVC_ITT_VENDOR_SPECIFIC: |
| 1501 | case UVC_ITT_CAMERA: |
| 1502 | case UVC_ITT_MEDIA_TRANSPORT_INPUT: |
| 1503 | case UVC_OTT_VENDOR_SPECIFIC: |
| 1504 | case UVC_OTT_DISPLAY: |
| 1505 | case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: |
| 1506 | case UVC_TT_STREAMING: |
Laurent Pinchart | 8ca5a63 | 2009-11-25 12:00:30 -0300 | [diff] [blame] | 1507 | id = UVC_ENTITY_IS_OTERM(entity) ? entity->baSourceID[0] : 0; |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1508 | break; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1509 | } |
| 1510 | |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1511 | if (id <= 0) { |
| 1512 | *_entity = NULL; |
| 1513 | return id; |
| 1514 | } |
| 1515 | |
| 1516 | entity = uvc_entity_by_id(chain->dev, id); |
| 1517 | if (entity == NULL) { |
| 1518 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " |
| 1519 | "unknown entity %d.\n", id); |
| 1520 | return -EINVAL; |
| 1521 | } |
| 1522 | |
| 1523 | *_entity = entity; |
| 1524 | return 0; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1525 | } |
| 1526 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1527 | static int uvc_scan_chain(struct uvc_video_chain *chain, |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1528 | struct uvc_entity *term) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1529 | { |
| 1530 | struct uvc_entity *entity, *prev; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1531 | |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1532 | uvc_trace(UVC_TRACE_PROBE, "Scanning UVC chain:"); |
Laurent Pinchart | ff92420 | 2008-12-28 22:32:29 -0300 | [diff] [blame] | 1533 | |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1534 | entity = term; |
| 1535 | prev = NULL; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1536 | |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1537 | while (entity != NULL) { |
| 1538 | /* Entity must not be part of an existing chain */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1539 | if (entity->chain.next || entity->chain.prev) { |
| 1540 | uvc_trace(UVC_TRACE_DESCR, "Found reference to " |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1541 | "entity %d already in chain.\n", entity->id); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1542 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1543 | } |
| 1544 | |
| 1545 | /* Process entity */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1546 | if (uvc_scan_chain_entity(chain, entity) < 0) |
| 1547 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1548 | |
| 1549 | /* Forward scan */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1550 | if (uvc_scan_chain_forward(chain, entity, prev) < 0) |
| 1551 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1552 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1553 | /* Backward scan */ |
Laurent Pinchart | 4057ac6 | 2009-11-25 12:00:29 -0300 | [diff] [blame] | 1554 | prev = entity; |
| 1555 | if (uvc_scan_chain_backward(chain, &entity) < 0) |
| 1556 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1557 | } |
| 1558 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1559 | return 0; |
| 1560 | } |
| 1561 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1562 | static unsigned int uvc_print_terms(struct list_head *terms, u16 dir, |
| 1563 | char *buffer) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1564 | { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1565 | struct uvc_entity *term; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1566 | unsigned int nterms = 0; |
| 1567 | char *p = buffer; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1568 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1569 | list_for_each_entry(term, terms, chain) { |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1570 | if (!UVC_ENTITY_IS_TERM(term) || |
| 1571 | UVC_TERM_DIRECTION(term) != dir) |
| 1572 | continue; |
| 1573 | |
| 1574 | if (nterms) |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1575 | p += sprintf(p, ","); |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1576 | if (++nterms >= 4) { |
| 1577 | p += sprintf(p, "..."); |
| 1578 | break; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1579 | } |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1580 | p += sprintf(p, "%u", term->id); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1581 | } |
| 1582 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1583 | return p - buffer; |
| 1584 | } |
| 1585 | |
| 1586 | static const char *uvc_print_chain(struct uvc_video_chain *chain) |
| 1587 | { |
| 1588 | static char buffer[43]; |
| 1589 | char *p = buffer; |
| 1590 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1591 | p += uvc_print_terms(&chain->entities, UVC_TERM_INPUT, p); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1592 | p += sprintf(p, " -> "); |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1593 | uvc_print_terms(&chain->entities, UVC_TERM_OUTPUT, p); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1594 | |
| 1595 | return buffer; |
| 1596 | } |
| 1597 | |
Henrik Ingo | bd2de45 | 2017-03-17 00:48:31 +0000 | [diff] [blame] | 1598 | static struct uvc_video_chain *uvc_alloc_chain(struct uvc_device *dev) |
| 1599 | { |
| 1600 | struct uvc_video_chain *chain; |
| 1601 | |
| 1602 | chain = kzalloc(sizeof(*chain), GFP_KERNEL); |
| 1603 | if (chain == NULL) |
| 1604 | return NULL; |
| 1605 | |
| 1606 | INIT_LIST_HEAD(&chain->entities); |
| 1607 | mutex_init(&chain->ctrl_mutex); |
| 1608 | chain->dev = dev; |
| 1609 | v4l2_prio_init(&chain->prio); |
| 1610 | |
| 1611 | return chain; |
| 1612 | } |
| 1613 | |
| 1614 | /* |
| 1615 | * Fallback heuristic for devices that don't connect units and terminals in a |
| 1616 | * valid chain. |
| 1617 | * |
| 1618 | * Some devices have invalid baSourceID references, causing uvc_scan_chain() |
| 1619 | * to fail, but if we just take the entities we can find and put them together |
| 1620 | * in the most sensible chain we can think of, turns out they do work anyway. |
| 1621 | * Note: This heuristic assumes there is a single chain. |
| 1622 | * |
| 1623 | * At the time of writing, devices known to have such a broken chain are |
| 1624 | * - Acer Integrated Camera (5986:055a) |
| 1625 | * - Realtek rtl157a7 (0bda:57a7) |
| 1626 | */ |
| 1627 | static int uvc_scan_fallback(struct uvc_device *dev) |
| 1628 | { |
| 1629 | struct uvc_video_chain *chain; |
| 1630 | struct uvc_entity *iterm = NULL; |
| 1631 | struct uvc_entity *oterm = NULL; |
| 1632 | struct uvc_entity *entity; |
| 1633 | struct uvc_entity *prev; |
| 1634 | |
| 1635 | /* |
| 1636 | * Start by locating the input and output terminals. We only support |
| 1637 | * devices with exactly one of each for now. |
| 1638 | */ |
| 1639 | list_for_each_entry(entity, &dev->entities, list) { |
| 1640 | if (UVC_ENTITY_IS_ITERM(entity)) { |
| 1641 | if (iterm) |
| 1642 | return -EINVAL; |
| 1643 | iterm = entity; |
| 1644 | } |
| 1645 | |
| 1646 | if (UVC_ENTITY_IS_OTERM(entity)) { |
| 1647 | if (oterm) |
| 1648 | return -EINVAL; |
| 1649 | oterm = entity; |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | if (iterm == NULL || oterm == NULL) |
| 1654 | return -EINVAL; |
| 1655 | |
| 1656 | /* Allocate the chain and fill it. */ |
| 1657 | chain = uvc_alloc_chain(dev); |
| 1658 | if (chain == NULL) |
| 1659 | return -ENOMEM; |
| 1660 | |
| 1661 | if (uvc_scan_chain_entity(chain, oterm) < 0) |
| 1662 | goto error; |
| 1663 | |
| 1664 | prev = oterm; |
| 1665 | |
| 1666 | /* |
| 1667 | * Add all Processing and Extension Units with two pads. The order |
| 1668 | * doesn't matter much, use reverse list traversal to connect units in |
| 1669 | * UVC descriptor order as we build the chain from output to input. This |
| 1670 | * leads to units appearing in the order meant by the manufacturer for |
| 1671 | * the cameras known to require this heuristic. |
| 1672 | */ |
| 1673 | list_for_each_entry_reverse(entity, &dev->entities, list) { |
| 1674 | if (entity->type != UVC_VC_PROCESSING_UNIT && |
| 1675 | entity->type != UVC_VC_EXTENSION_UNIT) |
| 1676 | continue; |
| 1677 | |
| 1678 | if (entity->num_pads != 2) |
| 1679 | continue; |
| 1680 | |
| 1681 | if (uvc_scan_chain_entity(chain, entity) < 0) |
| 1682 | goto error; |
| 1683 | |
| 1684 | prev->baSourceID[0] = entity->id; |
| 1685 | prev = entity; |
| 1686 | } |
| 1687 | |
| 1688 | if (uvc_scan_chain_entity(chain, iterm) < 0) |
| 1689 | goto error; |
| 1690 | |
| 1691 | prev->baSourceID[0] = iterm->id; |
| 1692 | |
| 1693 | list_add_tail(&chain->list, &dev->chains); |
| 1694 | |
| 1695 | uvc_trace(UVC_TRACE_PROBE, |
| 1696 | "Found a video chain by fallback heuristic (%s).\n", |
| 1697 | uvc_print_chain(chain)); |
| 1698 | |
| 1699 | return 0; |
| 1700 | |
| 1701 | error: |
| 1702 | kfree(chain); |
| 1703 | return -EINVAL; |
| 1704 | } |
| 1705 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1706 | /* |
| 1707 | * Scan the device for video chains and register video devices. |
| 1708 | * |
| 1709 | * Chains are scanned starting at their output terminals and walked backwards. |
| 1710 | */ |
| 1711 | static int uvc_scan_device(struct uvc_device *dev) |
| 1712 | { |
| 1713 | struct uvc_video_chain *chain; |
| 1714 | struct uvc_entity *term; |
| 1715 | |
| 1716 | list_for_each_entry(term, &dev->entities, list) { |
| 1717 | if (!UVC_ENTITY_IS_OTERM(term)) |
| 1718 | continue; |
| 1719 | |
| 1720 | /* If the terminal is already included in a chain, skip it. |
| 1721 | * This can happen for chains that have multiple output |
| 1722 | * terminals, where all output terminals beside the first one |
| 1723 | * will be inserted in the chain in forward scans. |
| 1724 | */ |
| 1725 | if (term->chain.next || term->chain.prev) |
| 1726 | continue; |
| 1727 | |
Henrik Ingo | bd2de45 | 2017-03-17 00:48:31 +0000 | [diff] [blame] | 1728 | chain = uvc_alloc_chain(dev); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1729 | if (chain == NULL) |
| 1730 | return -ENOMEM; |
| 1731 | |
Laurent Pinchart | 8be8ec6 | 2012-08-03 04:35:10 -0300 | [diff] [blame] | 1732 | term->flags |= UVC_ENTITY_FLAG_DEFAULT; |
| 1733 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1734 | if (uvc_scan_chain(chain, term) < 0) { |
| 1735 | kfree(chain); |
| 1736 | continue; |
| 1737 | } |
| 1738 | |
| 1739 | uvc_trace(UVC_TRACE_PROBE, "Found a valid video chain (%s).\n", |
| 1740 | uvc_print_chain(chain)); |
| 1741 | |
| 1742 | list_add_tail(&chain->list, &dev->chains); |
| 1743 | } |
| 1744 | |
Henrik Ingo | bd2de45 | 2017-03-17 00:48:31 +0000 | [diff] [blame] | 1745 | if (list_empty(&dev->chains)) |
| 1746 | uvc_scan_fallback(dev); |
| 1747 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1748 | if (list_empty(&dev->chains)) { |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1749 | uvc_printk(KERN_INFO, "No valid video chain found.\n"); |
| 1750 | return -1; |
| 1751 | } |
| 1752 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1753 | return 0; |
| 1754 | } |
| 1755 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1756 | /* ------------------------------------------------------------------------ |
| 1757 | * Video device registration and unregistration |
| 1758 | */ |
| 1759 | |
| 1760 | /* |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1761 | * Delete the UVC device. |
| 1762 | * |
| 1763 | * Called by the kernel when the last reference to the uvc_device structure |
| 1764 | * is released. |
| 1765 | * |
| 1766 | * As this function is called after or during disconnect(), all URBs have |
| 1767 | * already been canceled by the USB core. There is no need to kill the |
| 1768 | * interrupt URB manually. |
| 1769 | */ |
| 1770 | static void uvc_delete(struct uvc_device *dev) |
| 1771 | { |
| 1772 | struct list_head *p, *n; |
| 1773 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1774 | uvc_status_cleanup(dev); |
| 1775 | uvc_ctrl_cleanup_device(dev); |
| 1776 | |
Takashi Iwai | 2228d80 | 2014-10-24 05:10:20 -0300 | [diff] [blame] | 1777 | usb_put_intf(dev->intf); |
| 1778 | usb_put_dev(dev->udev); |
| 1779 | |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 1780 | if (dev->vdev.dev) |
| 1781 | v4l2_device_unregister(&dev->vdev); |
| 1782 | #ifdef CONFIG_MEDIA_CONTROLLER |
Mauro Carvalho Chehab | a087ce7 | 2016-04-27 19:28:26 -0300 | [diff] [blame] | 1783 | if (media_devnode_is_registered(dev->mdev.devnode)) |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 1784 | media_device_unregister(&dev->mdev); |
Javier Martinez Canillas | 9832e15 | 2015-12-11 20:57:08 -0200 | [diff] [blame] | 1785 | media_device_cleanup(&dev->mdev); |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 1786 | #endif |
| 1787 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1788 | list_for_each_safe(p, n, &dev->chains) { |
| 1789 | struct uvc_video_chain *chain; |
| 1790 | chain = list_entry(p, struct uvc_video_chain, list); |
| 1791 | kfree(chain); |
| 1792 | } |
| 1793 | |
| 1794 | list_for_each_safe(p, n, &dev->entities) { |
| 1795 | struct uvc_entity *entity; |
| 1796 | entity = list_entry(p, struct uvc_entity, list); |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 1797 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 1798 | uvc_mc_cleanup_entity(entity); |
| 1799 | #endif |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1800 | kfree(entity); |
| 1801 | } |
| 1802 | |
| 1803 | list_for_each_safe(p, n, &dev->streams) { |
| 1804 | struct uvc_streaming *streaming; |
| 1805 | streaming = list_entry(p, struct uvc_streaming, list); |
| 1806 | usb_driver_release_interface(&uvc_driver.driver, |
| 1807 | streaming->intf); |
| 1808 | usb_put_intf(streaming->intf); |
| 1809 | kfree(streaming->format); |
| 1810 | kfree(streaming->header.bmaControls); |
| 1811 | kfree(streaming); |
| 1812 | } |
| 1813 | |
| 1814 | kfree(dev); |
| 1815 | } |
| 1816 | |
| 1817 | static void uvc_release(struct video_device *vdev) |
| 1818 | { |
| 1819 | struct uvc_streaming *stream = video_get_drvdata(vdev); |
| 1820 | struct uvc_device *dev = stream->dev; |
| 1821 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1822 | /* Decrement the registered streams count and delete the device when it |
| 1823 | * reaches zero. |
| 1824 | */ |
| 1825 | if (atomic_dec_and_test(&dev->nstreams)) |
| 1826 | uvc_delete(dev); |
| 1827 | } |
| 1828 | |
| 1829 | /* |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1830 | * Unregister the video devices. |
| 1831 | */ |
| 1832 | static void uvc_unregister_video(struct uvc_device *dev) |
| 1833 | { |
| 1834 | struct uvc_streaming *stream; |
| 1835 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1836 | /* Unregistering all video devices might result in uvc_delete() being |
| 1837 | * called from inside the loop if there's no open file handle. To avoid |
| 1838 | * that, increment the stream count before iterating over the streams |
| 1839 | * and decrement it when done. |
| 1840 | */ |
| 1841 | atomic_inc(&dev->nstreams); |
| 1842 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1843 | list_for_each_entry(stream, &dev->streams, list) { |
Hans Verkuil | d8da751 | 2015-03-09 13:34:11 -0300 | [diff] [blame] | 1844 | if (!video_is_registered(&stream->vdev)) |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1845 | continue; |
| 1846 | |
Hans Verkuil | d8da751 | 2015-03-09 13:34:11 -0300 | [diff] [blame] | 1847 | video_unregister_device(&stream->vdev); |
Alexey Fisher | edbaa39 | 2011-11-03 09:39:37 -0300 | [diff] [blame] | 1848 | |
| 1849 | uvc_debugfs_cleanup_stream(stream); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1850 | } |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1851 | |
| 1852 | /* Decrement the stream count and call uvc_delete explicitly if there |
| 1853 | * are no stream left. |
| 1854 | */ |
| 1855 | if (atomic_dec_and_test(&dev->nstreams)) |
| 1856 | uvc_delete(dev); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1857 | } |
| 1858 | |
| 1859 | static int uvc_register_video(struct uvc_device *dev, |
| 1860 | struct uvc_streaming *stream) |
| 1861 | { |
Hans Verkuil | d8da751 | 2015-03-09 13:34:11 -0300 | [diff] [blame] | 1862 | struct video_device *vdev = &stream->vdev; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1863 | int ret; |
| 1864 | |
Laurent Pinchart | b83bba2 | 2014-10-13 10:11:35 -0300 | [diff] [blame] | 1865 | /* Initialize the video buffers queue. */ |
| 1866 | ret = uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param); |
| 1867 | if (ret) |
| 1868 | return ret; |
| 1869 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1870 | /* Initialize the streaming interface with default streaming |
| 1871 | * parameters. |
| 1872 | */ |
| 1873 | ret = uvc_video_init(stream); |
| 1874 | if (ret < 0) { |
| 1875 | uvc_printk(KERN_ERR, "Failed to initialize the device " |
| 1876 | "(%d).\n", ret); |
| 1877 | return ret; |
| 1878 | } |
| 1879 | |
Alexey Fisher | edbaa39 | 2011-11-03 09:39:37 -0300 | [diff] [blame] | 1880 | uvc_debugfs_init_stream(stream); |
| 1881 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1882 | /* Register the device with V4L. */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1883 | |
| 1884 | /* We already hold a reference to dev->udev. The video device will be |
| 1885 | * unregistered before the reference is released, so we don't need to |
| 1886 | * get another one. |
| 1887 | */ |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 1888 | vdev->v4l2_dev = &dev->vdev; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1889 | vdev->fops = &uvc_fops; |
Laurent Pinchart | d5e90b7 | 2010-09-30 10:17:54 -0300 | [diff] [blame] | 1890 | vdev->ioctl_ops = &uvc_ioctl_ops; |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1891 | vdev->release = uvc_release; |
Laurent Pinchart | 0550513 | 2012-08-28 20:29:56 -0300 | [diff] [blame] | 1892 | vdev->prio = &stream->chain->prio; |
Hans Verkuil | 954f340 | 2012-09-05 06:05:50 -0300 | [diff] [blame] | 1893 | if (stream->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) |
| 1894 | vdev->vfl_dir = VFL_DIR_TX; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1895 | strlcpy(vdev->name, dev->name, sizeof vdev->name); |
| 1896 | |
| 1897 | /* Set the driver data before calling video_register_device, otherwise |
| 1898 | * uvc_v4l2_open might race us. |
| 1899 | */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1900 | video_set_drvdata(vdev, stream); |
| 1901 | |
| 1902 | ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); |
| 1903 | if (ret < 0) { |
| 1904 | uvc_printk(KERN_ERR, "Failed to register video device (%d).\n", |
| 1905 | ret); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1906 | return ret; |
| 1907 | } |
| 1908 | |
Laurent Pinchart | f887e99 | 2012-08-28 18:38:58 -0300 | [diff] [blame] | 1909 | if (stream->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 1910 | stream->chain->caps |= V4L2_CAP_VIDEO_CAPTURE; |
| 1911 | else |
| 1912 | stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT; |
| 1913 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1914 | atomic_inc(&dev->nstreams); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1915 | return 0; |
| 1916 | } |
| 1917 | |
| 1918 | /* |
| 1919 | * Register all video devices in all chains. |
| 1920 | */ |
| 1921 | static int uvc_register_terms(struct uvc_device *dev, |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1922 | struct uvc_video_chain *chain) |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1923 | { |
| 1924 | struct uvc_streaming *stream; |
| 1925 | struct uvc_entity *term; |
| 1926 | int ret; |
| 1927 | |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1928 | list_for_each_entry(term, &chain->entities, chain) { |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1929 | if (UVC_ENTITY_TYPE(term) != UVC_TT_STREAMING) |
| 1930 | continue; |
| 1931 | |
| 1932 | stream = uvc_stream_by_id(dev, term->id); |
| 1933 | if (stream == NULL) { |
| 1934 | uvc_printk(KERN_INFO, "No streaming interface found " |
| 1935 | "for terminal %u.", term->id); |
| 1936 | continue; |
| 1937 | } |
| 1938 | |
| 1939 | stream->chain = chain; |
| 1940 | ret = uvc_register_video(dev, stream); |
| 1941 | if (ret < 0) |
| 1942 | return ret; |
Laurent Pinchart | 8a65a94 | 2010-01-21 08:56:19 -0300 | [diff] [blame] | 1943 | |
Hans Verkuil | d8da751 | 2015-03-09 13:34:11 -0300 | [diff] [blame] | 1944 | term->vdev = &stream->vdev; |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1945 | } |
| 1946 | |
| 1947 | return 0; |
| 1948 | } |
| 1949 | |
| 1950 | static int uvc_register_chains(struct uvc_device *dev) |
| 1951 | { |
| 1952 | struct uvc_video_chain *chain; |
| 1953 | int ret; |
| 1954 | |
| 1955 | list_for_each_entry(chain, &dev->chains, list) { |
Laurent Pinchart | 6241d8c | 2009-11-25 12:00:22 -0300 | [diff] [blame] | 1956 | ret = uvc_register_terms(dev, chain); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1957 | if (ret < 0) |
| 1958 | return ret; |
Laurent Pinchart | 4ffc2d8 | 2010-01-21 05:39:52 -0300 | [diff] [blame] | 1959 | |
| 1960 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 1961 | ret = uvc_mc_register_entities(chain); |
| 1962 | if (ret < 0) { |
| 1963 | uvc_printk(KERN_INFO, "Failed to register entites " |
| 1964 | "(%d).\n", ret); |
| 1965 | } |
| 1966 | #endif |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1967 | } |
| 1968 | |
| 1969 | return 0; |
| 1970 | } |
| 1971 | |
| 1972 | /* ------------------------------------------------------------------------ |
| 1973 | * USB probe, disconnect, suspend and resume |
| 1974 | */ |
| 1975 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1976 | static int uvc_probe(struct usb_interface *intf, |
| 1977 | const struct usb_device_id *id) |
| 1978 | { |
| 1979 | struct usb_device *udev = interface_to_usbdev(intf); |
| 1980 | struct uvc_device *dev; |
| 1981 | int ret; |
| 1982 | |
| 1983 | if (id->idVendor && id->idProduct) |
| 1984 | uvc_trace(UVC_TRACE_PROBE, "Probing known UVC device %s " |
| 1985 | "(%04x:%04x)\n", udev->devpath, id->idVendor, |
| 1986 | id->idProduct); |
| 1987 | else |
| 1988 | uvc_trace(UVC_TRACE_PROBE, "Probing generic UVC device %s\n", |
| 1989 | udev->devpath); |
| 1990 | |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 1991 | /* Allocate memory for the device and initialize it. */ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 1992 | if ((dev = kzalloc(sizeof *dev, GFP_KERNEL)) == NULL) |
| 1993 | return -ENOMEM; |
| 1994 | |
| 1995 | INIT_LIST_HEAD(&dev->entities); |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 1996 | INIT_LIST_HEAD(&dev->chains); |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 1997 | INIT_LIST_HEAD(&dev->streams); |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 1998 | atomic_set(&dev->nstreams, 0); |
Martin Rubli | 8fb91b3 | 2010-09-08 04:15:23 -0300 | [diff] [blame] | 1999 | atomic_set(&dev->nmappings, 0); |
Laurent Pinchart | 17706f5 | 2013-04-25 22:28:51 -0300 | [diff] [blame] | 2000 | mutex_init(&dev->lock); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2001 | |
| 2002 | dev->udev = usb_get_dev(udev); |
| 2003 | dev->intf = usb_get_intf(intf); |
| 2004 | dev->intfnum = intf->cur_altsetting->desc.bInterfaceNumber; |
Laurent Pinchart | 73de359 | 2009-12-10 10:00:39 -0300 | [diff] [blame] | 2005 | dev->quirks = (uvc_quirks_param == -1) |
| 2006 | ? id->driver_info : uvc_quirks_param; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2007 | |
| 2008 | if (udev->product != NULL) |
Laurent Pinchart | d0ebf30 | 2009-01-08 14:05:11 -0300 | [diff] [blame] | 2009 | strlcpy(dev->name, udev->product, sizeof dev->name); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2010 | else |
| 2011 | snprintf(dev->name, sizeof dev->name, |
| 2012 | "UVC Camera (%04x:%04x)", |
| 2013 | le16_to_cpu(udev->descriptor.idVendor), |
| 2014 | le16_to_cpu(udev->descriptor.idProduct)); |
| 2015 | |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2016 | /* Parse the Video Class control descriptor. */ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2017 | if (uvc_parse_control(dev) < 0) { |
| 2018 | uvc_trace(UVC_TRACE_PROBE, "Unable to parse UVC " |
| 2019 | "descriptors.\n"); |
| 2020 | goto error; |
| 2021 | } |
| 2022 | |
Laurent Pinchart | fba4578 | 2009-01-03 19:24:38 -0300 | [diff] [blame] | 2023 | uvc_printk(KERN_INFO, "Found UVC %u.%02x device %s (%04x:%04x)\n", |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2024 | dev->uvc_version >> 8, dev->uvc_version & 0xff, |
| 2025 | udev->product ? udev->product : "<unnamed>", |
| 2026 | le16_to_cpu(udev->descriptor.idVendor), |
| 2027 | le16_to_cpu(udev->descriptor.idProduct)); |
| 2028 | |
Laurent Pinchart | 73de359 | 2009-12-10 10:00:39 -0300 | [diff] [blame] | 2029 | if (dev->quirks != id->driver_info) { |
| 2030 | uvc_printk(KERN_INFO, "Forcing device quirks to 0x%x by module " |
| 2031 | "parameter for testing purpose.\n", dev->quirks); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2032 | uvc_printk(KERN_INFO, "Please report required quirks to the " |
| 2033 | "linux-uvc-devel mailing list.\n"); |
| 2034 | } |
| 2035 | |
Javier Martinez Canillas | 9832e15 | 2015-12-11 20:57:08 -0200 | [diff] [blame] | 2036 | /* Initialize the media device and register the V4L2 device. */ |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 2037 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 2038 | dev->mdev.dev = &intf->dev; |
| 2039 | strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); |
| 2040 | if (udev->serial) |
| 2041 | strlcpy(dev->mdev.serial, udev->serial, |
| 2042 | sizeof(dev->mdev.serial)); |
| 2043 | strcpy(dev->mdev.bus_info, udev->devpath); |
| 2044 | dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); |
Mauro Carvalho Chehab | fd3e582 | 2011-06-25 13:50:37 -0300 | [diff] [blame] | 2045 | dev->mdev.driver_version = LINUX_VERSION_CODE; |
Javier Martinez Canillas | 9832e15 | 2015-12-11 20:57:08 -0200 | [diff] [blame] | 2046 | media_device_init(&dev->mdev); |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 2047 | |
| 2048 | dev->vdev.mdev = &dev->mdev; |
| 2049 | #endif |
| 2050 | if (v4l2_device_register(&intf->dev, &dev->vdev) < 0) |
| 2051 | goto error; |
| 2052 | |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2053 | /* Initialize controls. */ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2054 | if (uvc_ctrl_init_device(dev) < 0) |
| 2055 | goto error; |
| 2056 | |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 2057 | /* Scan the device for video chains. */ |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2058 | if (uvc_scan_device(dev) < 0) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2059 | goto error; |
| 2060 | |
Laurent Pinchart | 5a254d7 | 2010-01-21 05:39:47 -0300 | [diff] [blame] | 2061 | /* Register video device nodes. */ |
Laurent Pinchart | 8e11359 | 2009-07-01 20:24:47 -0300 | [diff] [blame] | 2062 | if (uvc_register_chains(dev) < 0) |
| 2063 | goto error; |
| 2064 | |
Javier Martinez Canillas | 9832e15 | 2015-12-11 20:57:08 -0200 | [diff] [blame] | 2065 | #ifdef CONFIG_MEDIA_CONTROLLER |
| 2066 | /* Register the media device node */ |
| 2067 | if (media_device_register(&dev->mdev) < 0) |
| 2068 | goto error; |
| 2069 | #endif |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2070 | /* Save our data pointer in the interface data. */ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2071 | usb_set_intfdata(intf, dev); |
| 2072 | |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2073 | /* Initialize the interrupt URB. */ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2074 | if ((ret = uvc_status_init(dev)) < 0) { |
| 2075 | uvc_printk(KERN_INFO, "Unable to initialize the status " |
| 2076 | "endpoint (%d), status interrupt will not be " |
| 2077 | "supported.\n", ret); |
| 2078 | } |
| 2079 | |
| 2080 | uvc_trace(UVC_TRACE_PROBE, "UVC device initialized.\n"); |
Matthew Garrett | 3dae8b4 | 2010-09-16 15:00:04 -0300 | [diff] [blame] | 2081 | usb_enable_autosuspend(udev); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2082 | return 0; |
| 2083 | |
| 2084 | error: |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 2085 | uvc_unregister_video(dev); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2086 | return -ENODEV; |
| 2087 | } |
| 2088 | |
| 2089 | static void uvc_disconnect(struct usb_interface *intf) |
| 2090 | { |
| 2091 | struct uvc_device *dev = usb_get_intfdata(intf); |
| 2092 | |
| 2093 | /* Set the USB interface data to NULL. This can be done outside the |
| 2094 | * lock, as there's no other reader. |
| 2095 | */ |
| 2096 | usb_set_intfdata(intf, NULL); |
| 2097 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 2098 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
| 2099 | UVC_SC_VIDEOSTREAMING) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2100 | return; |
| 2101 | |
Laurent Pinchart | 716fdee | 2009-09-29 21:07:19 -0300 | [diff] [blame] | 2102 | uvc_unregister_video(dev); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2103 | } |
| 2104 | |
| 2105 | static int uvc_suspend(struct usb_interface *intf, pm_message_t message) |
| 2106 | { |
| 2107 | struct uvc_device *dev = usb_get_intfdata(intf); |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2108 | struct uvc_streaming *stream; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2109 | |
| 2110 | uvc_trace(UVC_TRACE_SUSPEND, "Suspending interface %u\n", |
| 2111 | intf->cur_altsetting->desc.bInterfaceNumber); |
| 2112 | |
| 2113 | /* Controls are cached on the fly so they don't need to be saved. */ |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 2114 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
Laurent Pinchart | 17706f5 | 2013-04-25 22:28:51 -0300 | [diff] [blame] | 2115 | UVC_SC_VIDEOCONTROL) { |
| 2116 | mutex_lock(&dev->lock); |
| 2117 | if (dev->users) |
| 2118 | uvc_status_stop(dev); |
| 2119 | mutex_unlock(&dev->lock); |
| 2120 | return 0; |
| 2121 | } |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2122 | |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2123 | list_for_each_entry(stream, &dev->streams, list) { |
| 2124 | if (stream->intf == intf) |
| 2125 | return uvc_video_suspend(stream); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2126 | } |
| 2127 | |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2128 | uvc_trace(UVC_TRACE_SUSPEND, "Suspend: video streaming USB interface " |
| 2129 | "mismatch.\n"); |
| 2130 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2131 | } |
| 2132 | |
Laurent Pinchart | 9b0ae86 | 2008-08-22 17:25:10 -0300 | [diff] [blame] | 2133 | static int __uvc_resume(struct usb_interface *intf, int reset) |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2134 | { |
| 2135 | struct uvc_device *dev = usb_get_intfdata(intf); |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2136 | struct uvc_streaming *stream; |
Laurent Pinchart | b83bba2 | 2014-10-13 10:11:35 -0300 | [diff] [blame] | 2137 | int ret = 0; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2138 | |
| 2139 | uvc_trace(UVC_TRACE_SUSPEND, "Resuming interface %u\n", |
| 2140 | intf->cur_altsetting->desc.bInterfaceNumber); |
| 2141 | |
Laurent Pinchart | b482d92 | 2009-06-26 11:39:42 -0300 | [diff] [blame] | 2142 | if (intf->cur_altsetting->desc.bInterfaceSubClass == |
| 2143 | UVC_SC_VIDEOCONTROL) { |
Laurent Pinchart | 17706f5 | 2013-04-25 22:28:51 -0300 | [diff] [blame] | 2144 | if (reset) { |
William Manley | 17e1319 | 2014-03-13 09:38:48 -0300 | [diff] [blame] | 2145 | ret = uvc_ctrl_restore_values(dev); |
Hans Verkuil | 7564f67 | 2009-05-02 08:12:36 -0300 | [diff] [blame] | 2146 | if (ret < 0) |
| 2147 | return ret; |
| 2148 | } |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2149 | |
Laurent Pinchart | 17706f5 | 2013-04-25 22:28:51 -0300 | [diff] [blame] | 2150 | mutex_lock(&dev->lock); |
| 2151 | if (dev->users) |
| 2152 | ret = uvc_status_start(dev, GFP_NOIO); |
| 2153 | mutex_unlock(&dev->lock); |
| 2154 | |
| 2155 | return ret; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2156 | } |
| 2157 | |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2158 | list_for_each_entry(stream, &dev->streams, list) { |
Laurent Pinchart | b83bba2 | 2014-10-13 10:11:35 -0300 | [diff] [blame] | 2159 | if (stream->intf == intf) { |
| 2160 | ret = uvc_video_resume(stream, reset); |
| 2161 | if (ret < 0) |
Laurent Pinchart | 0da4ab9 | 2014-10-21 16:19:04 -0300 | [diff] [blame] | 2162 | uvc_queue_streamoff(&stream->queue, |
| 2163 | stream->queue.queue.type); |
Laurent Pinchart | b83bba2 | 2014-10-13 10:11:35 -0300 | [diff] [blame] | 2164 | return ret; |
| 2165 | } |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2166 | } |
| 2167 | |
Laurent Pinchart | 35f02a6 | 2009-06-28 08:37:50 -0300 | [diff] [blame] | 2168 | uvc_trace(UVC_TRACE_SUSPEND, "Resume: video streaming USB interface " |
| 2169 | "mismatch.\n"); |
| 2170 | return -EINVAL; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2171 | } |
| 2172 | |
Laurent Pinchart | 9b0ae86 | 2008-08-22 17:25:10 -0300 | [diff] [blame] | 2173 | static int uvc_resume(struct usb_interface *intf) |
| 2174 | { |
| 2175 | return __uvc_resume(intf, 0); |
| 2176 | } |
| 2177 | |
| 2178 | static int uvc_reset_resume(struct usb_interface *intf) |
| 2179 | { |
| 2180 | return __uvc_resume(intf, 1); |
| 2181 | } |
| 2182 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2183 | /* ------------------------------------------------------------------------ |
Laurent Pinchart | 310fe52 | 2009-12-09 22:57:48 -0300 | [diff] [blame] | 2184 | * Module parameters |
| 2185 | */ |
| 2186 | |
| 2187 | static int uvc_clock_param_get(char *buffer, struct kernel_param *kp) |
| 2188 | { |
| 2189 | if (uvc_clock_param == CLOCK_MONOTONIC) |
| 2190 | return sprintf(buffer, "CLOCK_MONOTONIC"); |
| 2191 | else |
| 2192 | return sprintf(buffer, "CLOCK_REALTIME"); |
| 2193 | } |
| 2194 | |
| 2195 | static int uvc_clock_param_set(const char *val, struct kernel_param *kp) |
| 2196 | { |
| 2197 | if (strncasecmp(val, "clock_", strlen("clock_")) == 0) |
| 2198 | val += strlen("clock_"); |
| 2199 | |
| 2200 | if (strcasecmp(val, "monotonic") == 0) |
| 2201 | uvc_clock_param = CLOCK_MONOTONIC; |
| 2202 | else if (strcasecmp(val, "realtime") == 0) |
| 2203 | uvc_clock_param = CLOCK_REALTIME; |
| 2204 | else |
| 2205 | return -EINVAL; |
| 2206 | |
| 2207 | return 0; |
| 2208 | } |
| 2209 | |
| 2210 | module_param_call(clock, uvc_clock_param_set, uvc_clock_param_get, |
| 2211 | &uvc_clock_param, S_IRUGO|S_IWUSR); |
| 2212 | MODULE_PARM_DESC(clock, "Video buffers timestamp clock"); |
Laurent Pinchart | 5d0fd3c | 2015-07-27 11:06:48 -0300 | [diff] [blame] | 2213 | module_param_named(hwtimestamps, uvc_hw_timestamps_param, uint, S_IRUGO|S_IWUSR); |
| 2214 | MODULE_PARM_DESC(hwtimestamps, "Use hardware timestamps"); |
Laurent Pinchart | 310fe52 | 2009-12-09 22:57:48 -0300 | [diff] [blame] | 2215 | module_param_named(nodrop, uvc_no_drop_param, uint, S_IRUGO|S_IWUSR); |
| 2216 | MODULE_PARM_DESC(nodrop, "Don't drop incomplete frames"); |
| 2217 | module_param_named(quirks, uvc_quirks_param, uint, S_IRUGO|S_IWUSR); |
| 2218 | MODULE_PARM_DESC(quirks, "Forced device quirks"); |
| 2219 | module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR); |
| 2220 | MODULE_PARM_DESC(trace, "Trace level bitmask"); |
| 2221 | module_param_named(timeout, uvc_timeout_param, uint, S_IRUGO|S_IWUSR); |
| 2222 | MODULE_PARM_DESC(timeout, "Streaming control requests timeout"); |
| 2223 | |
| 2224 | /* ------------------------------------------------------------------------ |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2225 | * Driver initialization and cleanup |
| 2226 | */ |
| 2227 | |
| 2228 | /* |
| 2229 | * The Logitech cameras listed below have their interface class set to |
| 2230 | * VENDOR_SPEC because they don't announce themselves as UVC devices, even |
| 2231 | * though they are compliant. |
| 2232 | */ |
| 2233 | static struct usb_device_id uvc_ids[] = { |
Laurent Pinchart | 4eb2697 | 2011-11-02 13:08:06 -0300 | [diff] [blame] | 2234 | /* LogiLink Wireless Webcam */ |
| 2235 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2236 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2237 | .idVendor = 0x0416, |
| 2238 | .idProduct = 0xa91a, |
| 2239 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2240 | .bInterfaceSubClass = 1, |
| 2241 | .bInterfaceProtocol = 0, |
| 2242 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | bce039c | 2009-11-25 11:15:56 -0300 | [diff] [blame] | 2243 | /* Genius eFace 2025 */ |
| 2244 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2245 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2246 | .idVendor = 0x0458, |
| 2247 | .idProduct = 0x706e, |
| 2248 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2249 | .bInterfaceSubClass = 1, |
| 2250 | .bInterfaceProtocol = 0, |
| 2251 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2252 | /* Microsoft Lifecam NX-6000 */ |
| 2253 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2254 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2255 | .idVendor = 0x045e, |
| 2256 | .idProduct = 0x00f8, |
| 2257 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2258 | .bInterfaceSubClass = 1, |
| 2259 | .bInterfaceProtocol = 0, |
| 2260 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | 1558ec8 | 2013-09-02 07:26:16 -0300 | [diff] [blame] | 2261 | /* Microsoft Lifecam NX-3000 */ |
| 2262 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2263 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2264 | .idVendor = 0x045e, |
| 2265 | .idProduct = 0x0721, |
| 2266 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2267 | .bInterfaceSubClass = 1, |
| 2268 | .bInterfaceProtocol = 0, |
| 2269 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2270 | /* Microsoft Lifecam VX-7000 */ |
| 2271 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2272 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2273 | .idVendor = 0x045e, |
| 2274 | .idProduct = 0x0723, |
| 2275 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2276 | .bInterfaceSubClass = 1, |
| 2277 | .bInterfaceProtocol = 0, |
| 2278 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
| 2279 | /* Logitech Quickcam Fusion */ |
| 2280 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2281 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2282 | .idVendor = 0x046d, |
| 2283 | .idProduct = 0x08c1, |
| 2284 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2285 | .bInterfaceSubClass = 1, |
| 2286 | .bInterfaceProtocol = 0 }, |
| 2287 | /* Logitech Quickcam Orbit MP */ |
| 2288 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2289 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2290 | .idVendor = 0x046d, |
| 2291 | .idProduct = 0x08c2, |
| 2292 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2293 | .bInterfaceSubClass = 1, |
| 2294 | .bInterfaceProtocol = 0 }, |
| 2295 | /* Logitech Quickcam Pro for Notebook */ |
| 2296 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2297 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2298 | .idVendor = 0x046d, |
| 2299 | .idProduct = 0x08c3, |
| 2300 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2301 | .bInterfaceSubClass = 1, |
| 2302 | .bInterfaceProtocol = 0 }, |
| 2303 | /* Logitech Quickcam Pro 5000 */ |
| 2304 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2305 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2306 | .idVendor = 0x046d, |
| 2307 | .idProduct = 0x08c5, |
| 2308 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2309 | .bInterfaceSubClass = 1, |
| 2310 | .bInterfaceProtocol = 0 }, |
| 2311 | /* Logitech Quickcam OEM Dell Notebook */ |
| 2312 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2313 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2314 | .idVendor = 0x046d, |
| 2315 | .idProduct = 0x08c6, |
| 2316 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2317 | .bInterfaceSubClass = 1, |
| 2318 | .bInterfaceProtocol = 0 }, |
| 2319 | /* Logitech Quickcam OEM Cisco VT Camera II */ |
| 2320 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2321 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2322 | .idVendor = 0x046d, |
| 2323 | .idProduct = 0x08c7, |
| 2324 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2325 | .bInterfaceSubClass = 1, |
| 2326 | .bInterfaceProtocol = 0 }, |
William Manley | 17e1319 | 2014-03-13 09:38:48 -0300 | [diff] [blame] | 2327 | /* Logitech HD Pro Webcam C920 */ |
| 2328 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2329 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2330 | .idVendor = 0x046d, |
| 2331 | .idProduct = 0x082d, |
| 2332 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2333 | .bInterfaceSubClass = 1, |
| 2334 | .bInterfaceProtocol = 0, |
| 2335 | .driver_info = UVC_QUIRK_RESTORE_CTRLS_ON_INIT }, |
Laurent Pinchart | 86d8b6a | 2010-09-16 12:37:26 -0300 | [diff] [blame] | 2336 | /* Chicony CNF7129 (Asus EEE 100HE) */ |
| 2337 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2338 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2339 | .idVendor = 0x04f2, |
| 2340 | .idProduct = 0xb071, |
| 2341 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2342 | .bInterfaceSubClass = 1, |
| 2343 | .bInterfaceProtocol = 0, |
| 2344 | .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, |
Laurent Pinchart | f61d1d8 | 2009-01-14 12:49:11 -0300 | [diff] [blame] | 2345 | /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ |
| 2346 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2347 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2348 | .idVendor = 0x058f, |
| 2349 | .idProduct = 0x3820, |
| 2350 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2351 | .bInterfaceSubClass = 1, |
| 2352 | .bInterfaceProtocol = 0, |
| 2353 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | 3efe2f1 | 2011-11-02 13:08:06 -0300 | [diff] [blame] | 2354 | /* Dell XPS m1530 */ |
| 2355 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2356 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2357 | .idVendor = 0x05a9, |
| 2358 | .idProduct = 0x2640, |
| 2359 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2360 | .bInterfaceSubClass = 1, |
| 2361 | .bInterfaceProtocol = 0, |
| 2362 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Joseph Salisbury | 89e0f24 | 2013-08-29 12:17:41 -0300 | [diff] [blame] | 2363 | /* Dell SP2008WFP Monitor */ |
| 2364 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2365 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2366 | .idVendor = 0x05a9, |
| 2367 | .idProduct = 0x2641, |
| 2368 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2369 | .bInterfaceSubClass = 1, |
| 2370 | .bInterfaceProtocol = 0, |
| 2371 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Joseph Salisbury | c2a273b | 2013-05-15 17:38:48 -0300 | [diff] [blame] | 2372 | /* Dell Alienware X51 */ |
| 2373 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2374 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2375 | .idVendor = 0x05a9, |
| 2376 | .idProduct = 0x2643, |
| 2377 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2378 | .bInterfaceSubClass = 1, |
| 2379 | .bInterfaceProtocol = 0, |
| 2380 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Kamal Mostafa | afcf44c | 2013-04-15 16:01:51 -0300 | [diff] [blame] | 2381 | /* Dell Studio Hybrid 140g (OmniVision webcam) */ |
| 2382 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2383 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2384 | .idVendor = 0x05a9, |
| 2385 | .idProduct = 0x264a, |
| 2386 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2387 | .bInterfaceSubClass = 1, |
| 2388 | .bInterfaceProtocol = 0, |
| 2389 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Paul Fertser | 62ea864 | 2014-06-08 12:16:48 -0300 | [diff] [blame] | 2390 | /* Dell XPS M1330 (OmniVision OV7670 webcam) */ |
| 2391 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2392 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2393 | .idVendor = 0x05a9, |
| 2394 | .idProduct = 0x7670, |
| 2395 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2396 | .bInterfaceSubClass = 1, |
| 2397 | .bInterfaceProtocol = 0, |
| 2398 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2399 | /* Apple Built-In iSight */ |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2400 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2401 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2402 | .idVendor = 0x05ac, |
| 2403 | .idProduct = 0x8501, |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2404 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2405 | .bInterfaceSubClass = 1, |
| 2406 | .bInterfaceProtocol = 0, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2407 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
| 2408 | | UVC_QUIRK_BUILTIN_ISIGHT }, |
Kirill Smelkov | 949d926 | 2011-07-22 11:47:22 -0300 | [diff] [blame] | 2409 | /* Foxlink ("HP Webcam" on HP Mini 5103) */ |
| 2410 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2411 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2412 | .idVendor = 0x05c8, |
| 2413 | .idProduct = 0x0403, |
| 2414 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2415 | .bInterfaceSubClass = 1, |
| 2416 | .bInterfaceProtocol = 0, |
| 2417 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2418 | /* Genesys Logic USB 2.0 PC Camera */ |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2419 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2420 | | USB_DEVICE_ID_MATCH_INT_INFO, |
Laurent Pinchart | 2c2d264 | 2009-01-03 19:12:40 -0300 | [diff] [blame] | 2421 | .idVendor = 0x05e3, |
| 2422 | .idProduct = 0x0505, |
| 2423 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2424 | .bInterfaceSubClass = 1, |
| 2425 | .bInterfaceProtocol = 0, |
| 2426 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | e01a234 | 2010-06-25 04:58:43 -0300 | [diff] [blame] | 2427 | /* Hercules Classic Silver */ |
| 2428 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2429 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2430 | .idVendor = 0x06f8, |
| 2431 | .idProduct = 0x300c, |
| 2432 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2433 | .bInterfaceSubClass = 1, |
| 2434 | .bInterfaceProtocol = 0, |
| 2435 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, |
Laurent Pinchart | d79cd83 | 2009-07-19 19:16:05 -0300 | [diff] [blame] | 2436 | /* ViMicro Vega */ |
| 2437 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
Laurent Pinchart | 50144ae | 2009-02-16 17:41:52 -0300 | [diff] [blame] | 2438 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2439 | .idVendor = 0x0ac8, |
Laurent Pinchart | d79cd83 | 2009-07-19 19:16:05 -0300 | [diff] [blame] | 2440 | .idProduct = 0x332d, |
| 2441 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2442 | .bInterfaceSubClass = 1, |
| 2443 | .bInterfaceProtocol = 0, |
| 2444 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, |
| 2445 | /* ViMicro - Minoru3D */ |
| 2446 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2447 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2448 | .idVendor = 0x0ac8, |
| 2449 | .idProduct = 0x3410, |
| 2450 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2451 | .bInterfaceSubClass = 1, |
| 2452 | .bInterfaceProtocol = 0, |
| 2453 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, |
| 2454 | /* ViMicro Venus - Minoru3D */ |
| 2455 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2456 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2457 | .idVendor = 0x0ac8, |
| 2458 | .idProduct = 0x3420, |
Laurent Pinchart | 50144ae | 2009-02-16 17:41:52 -0300 | [diff] [blame] | 2459 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2460 | .bInterfaceSubClass = 1, |
| 2461 | .bInterfaceProtocol = 0, |
| 2462 | .driver_info = UVC_QUIRK_FIX_BANDWIDTH }, |
Laurent Pinchart | d584b83 | 2012-08-06 12:20:59 -0300 | [diff] [blame] | 2463 | /* Ophir Optronics - SPCAM 620U */ |
| 2464 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2465 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2466 | .idVendor = 0x0bd3, |
| 2467 | .idProduct = 0x0555, |
| 2468 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2469 | .bInterfaceSubClass = 1, |
| 2470 | .bInterfaceProtocol = 0, |
| 2471 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2472 | /* MT6227 */ |
| 2473 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2474 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2475 | .idVendor = 0x0e8d, |
| 2476 | .idProduct = 0x0004, |
| 2477 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2478 | .bInterfaceSubClass = 1, |
| 2479 | .bInterfaceProtocol = 0, |
Laurent Pinchart | bab6f66 | 2009-07-19 18:39:56 -0300 | [diff] [blame] | 2480 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
| 2481 | | UVC_QUIRK_PROBE_DEF }, |
Laurent Pinchart | 9275b32 | 2010-09-12 08:31:29 -0300 | [diff] [blame] | 2482 | /* IMC Networks (Medion Akoya) */ |
| 2483 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2484 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2485 | .idVendor = 0x13d3, |
| 2486 | .idProduct = 0x5103, |
| 2487 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2488 | .bInterfaceSubClass = 1, |
| 2489 | .bInterfaceProtocol = 0, |
| 2490 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | d1787b1 | 2010-06-25 04:58:43 -0300 | [diff] [blame] | 2491 | /* JMicron USB2.0 XGA WebCam */ |
| 2492 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2493 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2494 | .idVendor = 0x152d, |
| 2495 | .idProduct = 0x0310, |
| 2496 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2497 | .bInterfaceSubClass = 1, |
| 2498 | .bInterfaceProtocol = 0, |
| 2499 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2500 | /* Syntek (HP Spartan) */ |
| 2501 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2502 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2503 | .idVendor = 0x174f, |
| 2504 | .idProduct = 0x5212, |
| 2505 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2506 | .bInterfaceSubClass = 1, |
| 2507 | .bInterfaceProtocol = 0, |
| 2508 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | 562f0fe | 2008-11-08 18:47:28 -0300 | [diff] [blame] | 2509 | /* Syntek (Samsung Q310) */ |
| 2510 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2511 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2512 | .idVendor = 0x174f, |
| 2513 | .idProduct = 0x5931, |
| 2514 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2515 | .bInterfaceSubClass = 1, |
| 2516 | .bInterfaceProtocol = 0, |
| 2517 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | f129b03 | 2010-03-13 18:12:15 -0300 | [diff] [blame] | 2518 | /* Syntek (Packard Bell EasyNote MX52 */ |
| 2519 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2520 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2521 | .idVendor = 0x174f, |
| 2522 | .idProduct = 0x8a12, |
| 2523 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2524 | .bInterfaceSubClass = 1, |
| 2525 | .bInterfaceProtocol = 0, |
| 2526 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | f61d1d8 | 2009-01-14 12:49:11 -0300 | [diff] [blame] | 2527 | /* Syntek (Asus F9SG) */ |
Laurent Pinchart | 25e6985 | 2008-07-09 18:29:59 -0300 | [diff] [blame] | 2528 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2529 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2530 | .idVendor = 0x174f, |
| 2531 | .idProduct = 0x8a31, |
| 2532 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2533 | .bInterfaceSubClass = 1, |
| 2534 | .bInterfaceProtocol = 0, |
| 2535 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2536 | /* Syntek (Asus U3S) */ |
| 2537 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2538 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2539 | .idVendor = 0x174f, |
| 2540 | .idProduct = 0x8a33, |
| 2541 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2542 | .bInterfaceSubClass = 1, |
| 2543 | .bInterfaceProtocol = 0, |
| 2544 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | 0ce566d | 2009-03-27 10:46:49 -0300 | [diff] [blame] | 2545 | /* Syntek (JAOtech Smart Terminal) */ |
| 2546 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2547 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2548 | .idVendor = 0x174f, |
| 2549 | .idProduct = 0x8a34, |
| 2550 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2551 | .bInterfaceSubClass = 1, |
| 2552 | .bInterfaceProtocol = 0, |
| 2553 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | 70092c2 | 2010-08-03 11:18:01 -0300 | [diff] [blame] | 2554 | /* Miricle 307K */ |
| 2555 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2556 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2557 | .idVendor = 0x17dc, |
| 2558 | .idProduct = 0x0202, |
| 2559 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2560 | .bInterfaceSubClass = 1, |
| 2561 | .bInterfaceProtocol = 0, |
| 2562 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Filipe Rosset | 849a3ab | 2009-05-19 10:12:17 -0300 | [diff] [blame] | 2563 | /* Lenovo Thinkpad SL400/SL500 */ |
Laurent Pinchart | 2f38483 | 2008-11-08 18:52:04 -0300 | [diff] [blame] | 2564 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2565 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2566 | .idVendor = 0x17ef, |
| 2567 | .idProduct = 0x480b, |
| 2568 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2569 | .bInterfaceSubClass = 1, |
| 2570 | .bInterfaceProtocol = 0, |
| 2571 | .driver_info = UVC_QUIRK_STREAM_NO_FID }, |
Laurent Pinchart | 2d2bf2a | 2009-06-09 12:40:59 -0300 | [diff] [blame] | 2572 | /* Aveo Technology USB 2.0 Camera */ |
| 2573 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2574 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2575 | .idVendor = 0x1871, |
| 2576 | .idProduct = 0x0306, |
| 2577 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2578 | .bInterfaceSubClass = 1, |
| 2579 | .bInterfaceProtocol = 0, |
Laurent Pinchart | 5bdf137 | 2009-07-03 12:32:46 -0300 | [diff] [blame] | 2580 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
| 2581 | | UVC_QUIRK_PROBE_EXTRAFIELDS }, |
Laurent Pinchart | fe65247 | 2015-02-16 15:30:10 -0300 | [diff] [blame] | 2582 | /* Aveo Technology USB 2.0 Camera (Tasco USB Microscope) */ |
| 2583 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2584 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2585 | .idVendor = 0x1871, |
| 2586 | .idProduct = 0x0516, |
| 2587 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2588 | .bInterfaceSubClass = 1, |
| 2589 | .bInterfaceProtocol = 0 }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2590 | /* Ecamm Pico iMage */ |
| 2591 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2592 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2593 | .idVendor = 0x18cd, |
| 2594 | .idProduct = 0xcafe, |
| 2595 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2596 | .bInterfaceSubClass = 1, |
| 2597 | .bInterfaceProtocol = 0, |
| 2598 | .driver_info = UVC_QUIRK_PROBE_EXTRAFIELDS }, |
Laurent Pinchart | 2bb00fe | 2010-06-25 04:58:43 -0300 | [diff] [blame] | 2599 | /* Manta MM-353 Plako */ |
| 2600 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2601 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2602 | .idVendor = 0x18ec, |
| 2603 | .idProduct = 0x3188, |
| 2604 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2605 | .bInterfaceSubClass = 1, |
| 2606 | .bInterfaceProtocol = 0, |
| 2607 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | ca4a345 | 2009-06-09 12:46:43 -0300 | [diff] [blame] | 2608 | /* FSC WebCam V30S */ |
| 2609 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2610 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2611 | .idVendor = 0x18ec, |
| 2612 | .idProduct = 0x3288, |
| 2613 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2614 | .bInterfaceSubClass = 1, |
| 2615 | .bInterfaceProtocol = 0, |
| 2616 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | 1e4d05b | 2010-03-04 07:51:25 -0300 | [diff] [blame] | 2617 | /* Arkmicro unbranded */ |
| 2618 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2619 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2620 | .idVendor = 0x18ec, |
| 2621 | .idProduct = 0x3290, |
| 2622 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2623 | .bInterfaceSubClass = 1, |
| 2624 | .bInterfaceProtocol = 0, |
| 2625 | .driver_info = UVC_QUIRK_PROBE_DEF }, |
Arne Caspari | fd3e9f2 | 2011-07-30 08:29:11 -0300 | [diff] [blame] | 2626 | /* The Imaging Source USB CCD cameras */ |
| 2627 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2628 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2629 | .idVendor = 0x199e, |
| 2630 | .idProduct = 0x8102, |
| 2631 | .bInterfaceClass = USB_CLASS_VENDOR_SPEC, |
| 2632 | .bInterfaceSubClass = 1, |
| 2633 | .bInterfaceProtocol = 0 }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2634 | /* Bodelin ProScopeHR */ |
| 2635 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2636 | | USB_DEVICE_ID_MATCH_DEV_HI |
| 2637 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2638 | .idVendor = 0x19ab, |
| 2639 | .idProduct = 0x1000, |
| 2640 | .bcdDevice_hi = 0x0126, |
| 2641 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2642 | .bInterfaceSubClass = 1, |
| 2643 | .bInterfaceProtocol = 0, |
| 2644 | .driver_info = UVC_QUIRK_STATUS_INTERVAL }, |
Laurent Pinchart | 3bc766a | 2009-10-21 18:36:18 -0300 | [diff] [blame] | 2645 | /* MSI StarCam 370i */ |
| 2646 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2647 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2648 | .idVendor = 0x1b3b, |
| 2649 | .idProduct = 0x2951, |
| 2650 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2651 | .bInterfaceSubClass = 1, |
| 2652 | .bInterfaceProtocol = 0, |
| 2653 | .driver_info = UVC_QUIRK_PROBE_MINMAX }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2654 | /* SiGma Micro USB Web Camera */ |
| 2655 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2656 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2657 | .idVendor = 0x1c4f, |
| 2658 | .idProduct = 0x3000, |
| 2659 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2660 | .bInterfaceSubClass = 1, |
| 2661 | .bInterfaceProtocol = 0, |
| 2662 | .driver_info = UVC_QUIRK_PROBE_MINMAX |
Laurent Pinchart | d732c44 | 2009-05-31 17:05:55 -0300 | [diff] [blame] | 2663 | | UVC_QUIRK_IGNORE_SELECTOR_UNIT }, |
Philipp Zabel | e1b78a3 | 2014-08-06 17:50:49 -0300 | [diff] [blame] | 2664 | /* Oculus VR Positional Tracker DK2 */ |
| 2665 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE |
| 2666 | | USB_DEVICE_ID_MATCH_INT_INFO, |
| 2667 | .idVendor = 0x2833, |
| 2668 | .idProduct = 0x0201, |
| 2669 | .bInterfaceClass = USB_CLASS_VIDEO, |
| 2670 | .bInterfaceSubClass = 1, |
| 2671 | .bInterfaceProtocol = 0, |
| 2672 | .driver_info = UVC_QUIRK_FORCE_Y8 }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2673 | /* Generic USB Video Class */ |
Laurent Pinchart | 8afe97b | 2015-11-09 15:33:58 -0200 | [diff] [blame] | 2674 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_UNDEFINED) }, |
| 2675 | { USB_INTERFACE_INFO(USB_CLASS_VIDEO, 1, UVC_PC_PROTOCOL_15) }, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2676 | {} |
| 2677 | }; |
| 2678 | |
| 2679 | MODULE_DEVICE_TABLE(usb, uvc_ids); |
| 2680 | |
| 2681 | struct uvc_driver uvc_driver = { |
| 2682 | .driver = { |
| 2683 | .name = "uvcvideo", |
| 2684 | .probe = uvc_probe, |
| 2685 | .disconnect = uvc_disconnect, |
| 2686 | .suspend = uvc_suspend, |
| 2687 | .resume = uvc_resume, |
Laurent Pinchart | 9b0ae86 | 2008-08-22 17:25:10 -0300 | [diff] [blame] | 2688 | .reset_resume = uvc_reset_resume, |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2689 | .id_table = uvc_ids, |
| 2690 | .supports_autosuspend = 1, |
| 2691 | }, |
| 2692 | }; |
| 2693 | |
| 2694 | static int __init uvc_init(void) |
| 2695 | { |
Alexey Fisher | edbaa39 | 2011-11-03 09:39:37 -0300 | [diff] [blame] | 2696 | int ret; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2697 | |
Alexey Fisher | edbaa39 | 2011-11-03 09:39:37 -0300 | [diff] [blame] | 2698 | uvc_debugfs_init(); |
| 2699 | |
| 2700 | ret = usb_register(&uvc_driver.driver); |
| 2701 | if (ret < 0) { |
| 2702 | uvc_debugfs_cleanup(); |
| 2703 | return ret; |
| 2704 | } |
| 2705 | |
| 2706 | printk(KERN_INFO DRIVER_DESC " (" DRIVER_VERSION ")\n"); |
| 2707 | return 0; |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2708 | } |
| 2709 | |
| 2710 | static void __exit uvc_cleanup(void) |
| 2711 | { |
| 2712 | usb_deregister(&uvc_driver.driver); |
Alexey Fisher | edbaa39 | 2011-11-03 09:39:37 -0300 | [diff] [blame] | 2713 | uvc_debugfs_cleanup(); |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2714 | } |
| 2715 | |
| 2716 | module_init(uvc_init); |
| 2717 | module_exit(uvc_cleanup); |
| 2718 | |
Laurent Pinchart | c0efd23 | 2008-06-30 15:04:50 -0300 | [diff] [blame] | 2719 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 2720 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2721 | MODULE_LICENSE("GPL"); |
| 2722 | MODULE_VERSION(DRIVER_VERSION); |
Hans Verkuil | f87086e | 2008-07-18 00:50:58 -0300 | [diff] [blame] | 2723 | |