tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * ToupTek UCMOS / AmScope MU series camera driver
3 * TODO: contrast with ScopeTek / AmScope MDC cameras
4 *
5 * Copyright (C) 2012-2014 John McMaster <JohnDMcMaster@gmail.com>
6 *
7 * Special thanks to Bushing for helping with the decrypt algorithm and
8 * Sean O'Sullivan / the Rensselaer Center for Open Source
9 * Software (RCOS) for helping me learn kernel development
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 */
21
22#include "gspca.h"
23
24#define MODULE_NAME "touptek"
25
26MODULE_AUTHOR("John McMaster");
27MODULE_DESCRIPTION("ToupTek UCMOS / Amscope MU microscope camera driver");
28MODULE_LICENSE("GPL");
29
30/*
31 * Exposure reg is linear with exposure time
32 * Exposure (sec), E (reg)
33 * 0.000400, 0x0002
34 * 0.001000, 0x0005
35 * 0.005000, 0x0019
36 * 0.020000, 0x0064
37 * 0.080000, 0x0190
38 * 0.400000, 0x07D0
39 * 1.000000, 0x1388
40 * 2.000000, 0x2710
41 *
42 * Three gain stages
43 * 0x1000: master channel enable bit
44 * 0x007F: low gain bits
45 * 0x0080: medium gain bit
46 * 0x0100: high gain bit
47 * gain = enable * (1 + regH) * (1 + regM) * z * regL
48 *
49 * Gain implementation
50 * Want to do something similar to mt9v011.c's set_balance
51 *
52 * Gain does not vary with resolution (checked 640x480 vs 1600x1200)
53 *
54 * Constant derivation:
55 *
56 * Raw data:
57 * Gain, GTOP, B, R, GBOT
58 * 1.00, 0x105C, 0x1068, 0x10C8, 0x105C
59 * 1.20, 0x106E, 0x107E, 0x10D6, 0x106E
60 * 1.40, 0x10C0, 0x10CA, 0x10E5, 0x10C0
61 * 1.60, 0x10C9, 0x10D4, 0x10F3, 0x10C9
62 * 1.80, 0x10D2, 0x10DE, 0x11C1, 0x10D2
63 * 2.00, 0x10DC, 0x10E9, 0x11C8, 0x10DC
64 * 2.20, 0x10E5, 0x10F3, 0x11CF, 0x10E5
65 * 2.40, 0x10EE, 0x10FE, 0x11D7, 0x10EE
66 * 2.60, 0x10F7, 0x11C4, 0x11DE, 0x10F7
67 * 2.80, 0x11C0, 0x11CA, 0x11E5, 0x11C0
68 * 3.00, 0x11C5, 0x11CF, 0x11ED, 0x11C5
69 *
70 * zR = 0.0069605943152454778
71 * about 3/431 = 0.0069605568445475635
72 * zB = 0.0095695970695970703
73 * about 6/627 = 0.0095693779904306216
74 * zG = 0.010889328063241107
75 * about 6/551 = 0.010889292196007259
76 * about 10 bits for constant + 7 bits for value => at least 17 bit
77 * intermediate with 32 bit ints should be fine for overflow etc
78 * Essentially gains are in range 0-0x001FF
79 *
80 * However, V4L expects a main gain channel + R and B balance
81 * To keep things simple for now saturate the values of balance is too high/low
82 * This isn't really ideal but easy way to fit the Linux model
83 *
84 * Converted using gain model turns out to be quite linear:
85 * Gain, GTOP, B, R, GBOT
86 * 1.00, 92, 104, 144, 92
87 * 1.20, 110, 126, 172, 110
88 * 1.40, 128, 148, 202, 128
89 * 1.60, 146, 168, 230, 146
90 * 1.80, 164, 188, 260, 164
91 * 2.00, 184, 210, 288, 184
92 * 2.20, 202, 230, 316, 202
93 * 2.40, 220, 252, 348, 220
94 * 2.60, 238, 272, 376, 238
95 * 2.80, 256, 296, 404, 256
96 * 3.00, 276, 316, 436, 276
97 *
98 * Maximum gain is 0x7FF * 2 * 2 => 0x1FFC (8188)
99 * or about 13 effective bits of gain
100 * The highest the commercial driver goes in my setup 436
101 * However, because could *maybe* damage circuits
102 * limit the gain until have a reason to go higher
103 * Solution: gain clipped and warning emitted
104 */
105#define GAIN_MAX 511
106
107/* Frame sync is a short read */
108#define BULK_SIZE 0x4000
109
110/* MT9E001 reg names to give a rough approximation */
111#define REG_COARSE_INTEGRATION_TIME_ 0x3012
112#define REG_GROUPED_PARAMETER_HOLD_ 0x3022
113#define REG_MODE_SELECT 0x0100
114#define REG_OP_SYS_CLK_DIV 0x030A
115#define REG_VT_SYS_CLK_DIV 0x0302
116#define REG_PRE_PLL_CLK_DIV 0x0304
117#define REG_VT_PIX_CLK_DIV 0x0300
118#define REG_OP_PIX_CLK_DIV 0x0308
119#define REG_PLL_MULTIPLIER 0x0306
120#define REG_COARSE_INTEGRATION_TIME_ 0x3012
121#define REG_FRAME_LENGTH_LINES 0x0340
122#define REG_FRAME_LENGTH_LINES_ 0x300A
123#define REG_GREEN1_GAIN 0x3056
124#define REG_GREEN2_GAIN 0x305C
125#define REG_GROUPED_PARAMETER_HOLD 0x0104
126#define REG_LINE_LENGTH_PCK_ 0x300C
127#define REG_MODE_SELECT 0x0100
128#define REG_PLL_MULTIPLIER 0x0306
129#define REG_READ_MODE 0x3040
130#define REG_BLUE_GAIN 0x3058
131#define REG_RED_GAIN 0x305A
132#define REG_RESET_REGISTER 0x301A
133#define REG_SCALE_M 0x0404
134#define REG_SCALING_MODE 0x0400
135#define REG_SOFTWARE_RESET 0x0103
136#define REG_X_ADDR_END 0x0348
137#define REG_X_ADDR_START 0x0344
138#define REG_X_ADDR_START 0x0344
139#define REG_X_OUTPUT_SIZE 0x034C
140#define REG_Y_ADDR_END 0x034A
141#define REG_Y_ADDR_START 0x0346
142#define REG_Y_OUTPUT_SIZE 0x034E
143
144
145/* specific webcam descriptor */
146struct sd {
147 struct gspca_dev gspca_dev; /* !! must be the first item */
148 /* How many bytes this frame */
149 unsigned int this_f;
150
151 /*
152 Device has separate gains for each Bayer quadrant
153 V4L supports master gain which is referenced to G1/G2 and supplies
154 individual balance controls for R/B
155 */
156 struct v4l2_ctrl *blue;
157 struct v4l2_ctrl *red;
158};
159
160/* Used to simplify reg write error handling */
161struct cmd {
162 u16 value;
163 u16 index;
164};
165
166static const struct v4l2_pix_format vga_mode[] = {
167 {800, 600,
168 V4L2_PIX_FMT_SGRBG8,
169 V4L2_FIELD_NONE,
170 .bytesperline = 800,
171 .sizeimage = 800 * 600,
172 .colorspace = V4L2_COLORSPACE_SRGB},
173 {1600, 1200,
174 V4L2_PIX_FMT_SGRBG8,
175 V4L2_FIELD_NONE,
176 .bytesperline = 1600,
177 .sizeimage = 1600 * 1200,
178 .colorspace = V4L2_COLORSPACE_SRGB},
179 {3264, 2448,
180 V4L2_PIX_FMT_SGRBG8,
181 V4L2_FIELD_NONE,
182 .bytesperline = 3264,
183 .sizeimage = 3264 * 2448,
184 .colorspace = V4L2_COLORSPACE_SRGB},
185};
186
187/*
188 * As theres no known frame sync, the only way to keep synced is to try hard
189 * to never miss any packets
190 */
191#if MAX_NURBS < 4
192#error "Not enough URBs in the gspca table"
193#endif
194
195static int val_reply(struct gspca_dev *gspca_dev, const char *reply, int rc)
196{
197 if (rc < 0) {
198 PERR("reply has error %d", rc);
199 return -EIO;
200 }
201 if (rc != 1) {
202 PERR("Bad reply size %d", rc);
203 return -EIO;
204 }
205 if (reply[0] != 0x08) {
206 PERR("Bad reply 0x%02x", (int)reply[0]);
207 return -EIO;
208 }
209 return 0;
210}
211
212static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index)
213{
214 char *buff = gspca_dev->usb_buf;
215 int rc;
216
217 PDEBUG(D_USBO,
218 "reg_w bReq=0x0B, bReqT=0xC0, wVal=0x%04X, wInd=0x%04X\n",
219 value, index);
220 rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),
221 0x0B, 0xC0, value, index, buff, 1, 500);
222 PDEBUG(D_USBO, "rc=%d, ret={0x%02x}", rc, (int)buff[0]);
223 if (rc < 0) {
224 PERR("Failed reg_w(0x0B, 0xC0, 0x%04X, 0x%04X) w/ rc %d\n",
225 value, index, rc);
226 gspca_dev->usb_err = rc;
227 return;
228 }
229 if (val_reply(gspca_dev, buff, rc)) {
230 PERR("Bad reply to reg_w(0x0B, 0xC0, 0x%04X, 0x%04X\n",
231 value, index);
232 gspca_dev->usb_err = -EIO;
233 }
234}
235
236static void reg_w_buf(struct gspca_dev *gspca_dev,
237 const struct cmd *p, int l)
238{
239 do {
240 reg_w(gspca_dev, p->value, p->index);
241 p++;
242 } while (--l > 0);
243}
244
245static void setexposure(struct gspca_dev *gspca_dev, s32 val)
246{
247 u16 value;
248 unsigned int w = gspca_dev->pixfmt.width;
249
250 if (w == 800)
251 value = val * 5;
252 else if (w == 1600)
253 value = val * 3;
254 else if (w == 3264)
255 value = val * 3 / 2;
256 else {
257 PERR("Invalid width %u\n", w);
258 gspca_dev->usb_err = -EINVAL;
259 return;
260 }
261 PDEBUG(D_STREAM, "exposure: 0x%04X ms\n", value);
262 /* Wonder if theres a good reason for sending it twice */
263 /* probably not but leave it in because...why not */
264 reg_w(gspca_dev, value, REG_COARSE_INTEGRATION_TIME_);
265 reg_w(gspca_dev, value, REG_COARSE_INTEGRATION_TIME_);
266}
267
268static int gainify(int in)
269{
270 /*
271 * TODO: check if there are any issues with corner cases
272 * 0x000 (0):0x07F (127): regL
273 * 0x080 (128) - 0x0FF (255): regM, regL
274 * 0x100 (256) - max: regH, regM, regL
275 */
276 if (in <= 0x7F)
277 return 0x1000 | in;
278 else if (in <= 0xFF)
279 return 0x1080 | in / 2;
280 else
281 return 0x1180 | in / 4;
282}
283
284static void setggain(struct gspca_dev *gspca_dev, u16 global_gain)
285{
286 u16 normalized;
287
288 normalized = gainify(global_gain);
289 PDEBUG(D_STREAM, "gain G1/G2 (0x%04X): 0x%04X (src 0x%04X)\n",
290 REG_GREEN1_GAIN,
291 normalized, global_gain);
292
293 reg_w(gspca_dev, normalized, REG_GREEN1_GAIN);
294 reg_w(gspca_dev, normalized, REG_GREEN2_GAIN);
295}
296
297static void setbgain(struct gspca_dev *gspca_dev,
298 u16 gain, u16 global_gain)
299{
300 u16 normalized;
301
302 normalized = global_gain +
303 ((u32)global_gain) * gain / GAIN_MAX;
304 if (normalized > GAIN_MAX) {
305 PDEBUG(D_STREAM, "Truncating blue 0x%04X w/ value 0x%04X\n",
306 GAIN_MAX, normalized);
307 normalized = GAIN_MAX;
308 }
309 normalized = gainify(normalized);
310 PDEBUG(D_STREAM, "gain B (0x%04X): 0x%04X w/ source 0x%04X\n",
311 REG_BLUE_GAIN, normalized, gain);
312
313 reg_w(gspca_dev, normalized, REG_BLUE_GAIN);
314}
315
316static void setrgain(struct gspca_dev *gspca_dev,
317 u16 gain, u16 global_gain)
318{
319 u16 normalized;
320
321 normalized = global_gain +
322 ((u32)global_gain) * gain / GAIN_MAX;
323 if (normalized > GAIN_MAX) {
324 PDEBUG(D_STREAM, "Truncating gain 0x%04X w/ value 0x%04X\n",
325 GAIN_MAX, normalized);
326 normalized = GAIN_MAX;
327 }
328 normalized = gainify(normalized);
329 PDEBUG(D_STREAM, "gain R (0x%04X): 0x%04X w / source 0x%04X\n",
330 REG_RED_GAIN, normalized, gain);
331
332 reg_w(gspca_dev, normalized, REG_RED_GAIN);
333}
334
335static void configure_wh(struct gspca_dev *gspca_dev)
336{
337 unsigned int w = gspca_dev->pixfmt.width;
338
339 PDEBUG(D_STREAM, "configure_wh\n");
340
341 if (w == 800) {
342 static const struct cmd reg_init_res[] = {
343 {0x0060, REG_X_ADDR_START},
344 {0x0CD9, REG_X_ADDR_END},
345 {0x0036, REG_Y_ADDR_START},
346 {0x098F, REG_Y_ADDR_END},
347 {0x07C7, REG_READ_MODE},
348 };
349
350 reg_w_buf(gspca_dev,
351 reg_init_res, ARRAY_SIZE(reg_init_res));
352 } else if (w == 1600) {
353 static const struct cmd reg_init_res[] = {
354 {0x009C, REG_X_ADDR_START},
355 {0x0D19, REG_X_ADDR_END},
356 {0x0068, REG_Y_ADDR_START},
357 {0x09C5, REG_Y_ADDR_END},
358 {0x06C3, REG_READ_MODE},
359 };
360
361 reg_w_buf(gspca_dev,
362 reg_init_res, ARRAY_SIZE(reg_init_res));
363 } else if (w == 3264) {
364 static const struct cmd reg_init_res[] = {
365 {0x00E8, REG_X_ADDR_START},
366 {0x0DA7, REG_X_ADDR_END},
367 {0x009E, REG_Y_ADDR_START},
368 {0x0A2D, REG_Y_ADDR_END},
369 {0x0241, REG_READ_MODE},
370 };
371
372 reg_w_buf(gspca_dev,
373 reg_init_res, ARRAY_SIZE(reg_init_res));
374 } else {
375 PERR("bad width %u\n", w);
376 gspca_dev->usb_err = -EINVAL;
377 return;
378 }
379
380 reg_w(gspca_dev, 0x0000, REG_SCALING_MODE);
381 reg_w(gspca_dev, 0x0010, REG_SCALE_M);
382 reg_w(gspca_dev, w, REG_X_OUTPUT_SIZE);
383 reg_w(gspca_dev, gspca_dev->pixfmt.height, REG_Y_OUTPUT_SIZE);
384
385 if (w == 800) {
386 reg_w(gspca_dev, 0x0384, REG_FRAME_LENGTH_LINES_);
387 reg_w(gspca_dev, 0x0960, REG_LINE_LENGTH_PCK_);
388 } else if (w == 1600) {
389 reg_w(gspca_dev, 0x0640, REG_FRAME_LENGTH_LINES_);
390 reg_w(gspca_dev, 0x0FA0, REG_LINE_LENGTH_PCK_);
391 } else if (w == 3264) {
392 reg_w(gspca_dev, 0x0B4B, REG_FRAME_LENGTH_LINES_);
393 reg_w(gspca_dev, 0x1F40, REG_LINE_LENGTH_PCK_);
394 } else {
395 PERR("bad width %u\n", w);
396 gspca_dev->usb_err = -EINVAL;
397 return;
398 }
399}
400
401/* Packets that were encrypted, no idea if the grouping is significant */
402static void configure_encrypted(struct gspca_dev *gspca_dev)
403{
404 static const struct cmd reg_init_begin[] = {
405 {0x0100, REG_SOFTWARE_RESET},
406 {0x0000, REG_MODE_SELECT},
407 {0x0100, REG_GROUPED_PARAMETER_HOLD},
408 {0x0004, REG_VT_PIX_CLK_DIV},
409 {0x0001, REG_VT_SYS_CLK_DIV},
410 {0x0008, REG_OP_PIX_CLK_DIV},
411 {0x0001, REG_OP_SYS_CLK_DIV},
412 {0x0004, REG_PRE_PLL_CLK_DIV},
413 {0x0040, REG_PLL_MULTIPLIER},
414 {0x0000, REG_GROUPED_PARAMETER_HOLD},
415 {0x0100, REG_GROUPED_PARAMETER_HOLD},
416 };
417 static const struct cmd reg_init_end[] = {
418 {0x0000, REG_GROUPED_PARAMETER_HOLD},
419 {0x0301, 0x31AE},
420 {0x0805, 0x3064},
421 {0x0071, 0x3170},
422 {0x10DE, REG_RESET_REGISTER},
423 {0x0000, REG_MODE_SELECT},
424 {0x0010, REG_PLL_MULTIPLIER},
425 {0x0100, REG_MODE_SELECT},
426 };
427
428 PDEBUG(D_STREAM, "Encrypted begin, w = %u\n", gspca_dev->pixfmt.width);
429 reg_w_buf(gspca_dev, reg_init_begin, ARRAY_SIZE(reg_init_begin));
430 configure_wh(gspca_dev);
431 reg_w_buf(gspca_dev, reg_init_end, ARRAY_SIZE(reg_init_end));
432 reg_w(gspca_dev, 0x0100, REG_GROUPED_PARAMETER_HOLD);
433 reg_w(gspca_dev, 0x0000, REG_GROUPED_PARAMETER_HOLD);
434
435 PDEBUG(D_STREAM, "Encrypted end\n");
436}
437
438static int configure(struct gspca_dev *gspca_dev)
439{
440 int rc;
441 char *buff = gspca_dev->usb_buf;
442
443 PDEBUG(D_STREAM, "configure()\n");
444
445 /*
446 * First driver sets a sort of encryption key
447 * A number of futur requests of this type have wValue and wIndex
448 * encrypted as follows:
449 * -Compute key = this wValue rotate left by 4 bits
450 * (decrypt.py rotates right because we are decrypting)
451 * -Later packets encrypt packets by XOR'ing with key
452 * XOR encrypt/decrypt is symmetrical
453 * wValue, and wIndex are encrypted
454 * bRequest is not and bRequestType is always 0xC0
455 * This allows resyncing if key is unknown?
456 * By setting 0 we XOR with 0 and the shifting and XOR drops out
457 */
458 rc = usb_control_msg(gspca_dev->dev, usb_rcvctrlpipe(gspca_dev->dev, 0),
459 0x16, 0xC0, 0x0000, 0x0000, buff, 2, 500);
460 if (val_reply(gspca_dev, buff, rc)) {
461 PERR("failed key req");
462 return -EIO;
463 }
464
465 /*
466 * Next does some sort of 2 packet challenge / response
467 * evidence suggests its an Atmel I2C crypto part but nobody cares to
468 * look
469 * (to make sure its not cloned hardware?)
470 * Ignore: I want to work with their hardware, not clone it
471 * 16 bytes out challenge, requestType: 0x40
472 * 16 bytes in response, requestType: 0xC0
473 */
474
475 rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
476 0x01, 0x40, 0x0001, 0x000F, NULL, 0, 500);
477 if (rc < 0) {
478 PERR("failed to replay packet 176 w/ rc %d\n", rc);
479 return rc;
480 }
481
482 rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
483 0x01, 0x40, 0x0000, 0x000F, NULL, 0, 500);
484 if (rc < 0) {
485 PERR("failed to replay packet 178 w/ rc %d\n", rc);
486 return rc;
487 }
488
489 rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
490 0x01, 0x40, 0x0001, 0x000F, NULL, 0, 500);
491 if (rc < 0) {
492 PERR("failed to replay packet 180 w/ rc %d\n", rc);
493 return rc;
494 }
495
496 /*
497 * Serial number? Doesn't seem to be required
498 * cam1: \xE6\x0D\x00\x00, cam2: \x70\x19\x00\x00
499 * rc = usb_control_msg(gspca_dev->dev,
500 * usb_rcvctrlpipe(gspca_dev->dev, 0),
501 * 0x20, 0xC0, 0x0000, 0x0000, buff, 4, 500);
502 */
503
504 /* Large (EEPROM?) read, skip it since no idea what to do with it */
505 gspca_dev->usb_err = 0;
506 configure_encrypted(gspca_dev);
507 if (gspca_dev->usb_err)
508 return gspca_dev->usb_err;
509
510 /* Omitted this by accident, does not work without it */
511 rc = usb_control_msg(gspca_dev->dev, usb_sndctrlpipe(gspca_dev->dev, 0),
512 0x01, 0x40, 0x0003, 0x000F, NULL, 0, 500);
513 if (rc < 0) {
514 PERR("failed to replay final packet w/ rc %d\n", rc);
515 return rc;
516 }
517
518 PDEBUG(D_STREAM, "Configure complete\n");
519 return 0;
520}
521
522static int sd_config(struct gspca_dev *gspca_dev,
523 const struct usb_device_id *id)
524{
525 gspca_dev->cam.cam_mode = vga_mode;
526 gspca_dev->cam.nmodes = ARRAY_SIZE(vga_mode);
527
528 /* Yes we want URBs and we want them now! */
529 gspca_dev->cam.no_urb_create = 0;
530 gspca_dev->cam.bulk_nurbs = 4;
531 /* Largest size the windows driver uses */
532 gspca_dev->cam.bulk_size = BULK_SIZE;
533 /* Def need to use bulk transfers */
534 gspca_dev->cam.bulk = 1;
535
536 return 0;
537}
538
539static int sd_start(struct gspca_dev *gspca_dev)
540{
541 struct sd *sd = (struct sd *) gspca_dev;
542 int rc;
543
544 sd->this_f = 0;
545
546 rc = configure(gspca_dev);
547 if (rc < 0) {
548 PERR("Failed configure");
549 return rc;
550 }
551 /* First two frames have messed up gains
552 Drop them to avoid special cases in user apps? */
553 return 0;
554}
555
556static void sd_pkt_scan(struct gspca_dev *gspca_dev,
557 u8 *data, /* isoc packet */
558 int len) /* iso packet length */
559{
560 struct sd *sd = (struct sd *) gspca_dev;
561
562 if (len != BULK_SIZE) {
563 /* can we finish a frame? */
564 if (sd->this_f + len == gspca_dev->pixfmt.sizeimage) {
565 gspca_frame_add(gspca_dev, LAST_PACKET, data, len);
566 PDEBUG(D_FRAM, "finish frame sz %u/%u w/ len %u\n",
567 sd->this_f, gspca_dev->pixfmt.sizeimage, len);
568 /* lost some data, discard the frame */
569 } else {
570 gspca_frame_add(gspca_dev, DISCARD_PACKET, NULL, 0);
571 PDEBUG(D_FRAM, "abort frame sz %u/%u w/ len %u\n",
572 sd->this_f, gspca_dev->pixfmt.sizeimage, len);
573 }
574 sd->this_f = 0;
575 } else {
576 if (sd->this_f == 0)
577 gspca_frame_add(gspca_dev, FIRST_PACKET, data, len);
578 else
579 gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
580 sd->this_f += len;
581 }
582}
583
584static int sd_init(struct gspca_dev *gspca_dev)
585{
586 return 0;
587}
588
589static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
590{
591 struct gspca_dev *gspca_dev =
592 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
593 struct sd *sd = (struct sd *) gspca_dev;
594
595 gspca_dev->usb_err = 0;
596
597 if (!gspca_dev->streaming)
598 return 0;
599
600 switch (ctrl->id) {
601 case V4L2_CID_EXPOSURE:
602 setexposure(gspca_dev, ctrl->val);
603 break;
604 case V4L2_CID_GAIN:
605 /* gspca_dev->gain automatically updated */
606 setggain(gspca_dev, gspca_dev->gain->val);
607 break;
608 case V4L2_CID_BLUE_BALANCE:
609 sd->blue->val = ctrl->val;
610 setbgain(gspca_dev, sd->blue->val, gspca_dev->gain->val);
611 break;
612 case V4L2_CID_RED_BALANCE:
613 sd->red->val = ctrl->val;
614 setrgain(gspca_dev, sd->red->val, gspca_dev->gain->val);
615 break;
616 }
617 return gspca_dev->usb_err;
618}
619
620static const struct v4l2_ctrl_ops sd_ctrl_ops = {
621 .s_ctrl = sd_s_ctrl,
622};
623
624static int sd_init_controls(struct gspca_dev *gspca_dev)
625{
626 struct sd *sd = (struct sd *) gspca_dev;
627 struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
628
629 gspca_dev->vdev.ctrl_handler = hdl;
630 v4l2_ctrl_handler_init(hdl, 4);
631
632 gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
633 /* Mostly limited by URB timeouts */
634 /* XXX: make dynamic based on frame rate? */
635 V4L2_CID_EXPOSURE, 0, 800, 1, 350);
636 gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
637 V4L2_CID_GAIN, 0, 511, 1, 128);
638 sd->blue = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
639 V4L2_CID_BLUE_BALANCE, 0, 1023, 1, 80);
640 sd->red = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
641 V4L2_CID_RED_BALANCE, 0, 1023, 1, 295);
642
643 if (hdl->error) {
644 PERR("Could not initialize controls\n");
645 return hdl->error;
646 }
647 return 0;
648}
649
650/* sub-driver description */
651static const struct sd_desc sd_desc = {
652 .name = MODULE_NAME,
653 .config = sd_config,
654 .init = sd_init,
655 .init_controls = sd_init_controls,
656 .start = sd_start,
657 .pkt_scan = sd_pkt_scan,
658};
659
660/* Table of supported USB devices */
661static const struct usb_device_id device_table[] = {
662 /* Commented out devices should be related */
663 /* AS: AmScope, TT: ToupTek */
664 /* { USB_DEVICE(0x0547, 0x6035) }, TT UCMOS00350KPA */
665 /* { USB_DEVICE(0x0547, 0x6130) }, TT UCMOS01300KPA */
666 /* { USB_DEVICE(0x0547, 0x6200) }, TT UCMOS02000KPA */
667 /* { USB_DEVICE(0x0547, 0x6310) }, TT UCMOS03100KPA */
668 /* { USB_DEVICE(0x0547, 0x6510) }, TT UCMOS05100KPA */
669 /* { USB_DEVICE(0x0547, 0x6800) }, TT UCMOS08000KPA */
670 /* { USB_DEVICE(0x0547, 0x6801) }, TT UCMOS08000KPB */
671 { USB_DEVICE(0x0547, 0x6801) }, /* TT UCMOS08000KPB, AS MU800 */
672 /* { USB_DEVICE(0x0547, 0x6900) }, TT UCMOS09000KPA */
673 /* { USB_DEVICE(0x0547, 0x6901) }, TT UCMOS09000KPB */
674 /* { USB_DEVICE(0x0547, 0x6010) }, TT UCMOS10000KPA */
675 /* { USB_DEVICE(0x0547, 0x6014) }, TT UCMOS14000KPA */
676 /* { USB_DEVICE(0x0547, 0x6131) }, TT UCMOS01300KMA */
677 /* { USB_DEVICE(0x0547, 0x6511) }, TT UCMOS05100KMA */
678 /* { USB_DEVICE(0x0547, 0x8080) }, TT UHCCD00800KPA */
679 /* { USB_DEVICE(0x0547, 0x8140) }, TT UHCCD01400KPA */
680 /* { USB_DEVICE(0x0547, 0x8141) }, TT EXCCD01400KPA */
681 /* { USB_DEVICE(0x0547, 0x8200) }, TT UHCCD02000KPA */
682 /* { USB_DEVICE(0x0547, 0x8201) }, TT UHCCD02000KPB */
683 /* { USB_DEVICE(0x0547, 0x8310) }, TT UHCCD03100KPA */
684 /* { USB_DEVICE(0x0547, 0x8500) }, TT UHCCD05000KPA */
685 /* { USB_DEVICE(0x0547, 0x8510) }, TT UHCCD05100KPA */
686 /* { USB_DEVICE(0x0547, 0x8600) }, TT UHCCD06000KPA */
687 /* { USB_DEVICE(0x0547, 0x8800) }, TT UHCCD08000KPA */
688 /* { USB_DEVICE(0x0547, 0x8315) }, TT UHCCD03150KPA */
689 /* { USB_DEVICE(0x0547, 0x7800) }, TT UHCCD00800KMA */
690 /* { USB_DEVICE(0x0547, 0x7140) }, TT UHCCD01400KMA */
691 /* { USB_DEVICE(0x0547, 0x7141) }, TT UHCCD01400KMB */
692 /* { USB_DEVICE(0x0547, 0x7200) }, TT UHCCD02000KMA */
693 /* { USB_DEVICE(0x0547, 0x7315) }, TT UHCCD03150KMA */
694 { }
695};
696MODULE_DEVICE_TABLE(usb, device_table);
697
698static int sd_probe(struct usb_interface *intf,
699 const struct usb_device_id *id)
700{
701 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
702 THIS_MODULE);
703}
704
705static struct usb_driver sd_driver = {
706 .name = MODULE_NAME,
707 .id_table = device_table,
708 .probe = sd_probe,
709 .disconnect = gspca_disconnect,
710#ifdef CONFIG_PM
711 .suspend = gspca_suspend,
712 .resume = gspca_resume,
713#endif
714};
715
716static int __init sd_mod_init(void)
717{
718 int ret;
719
720 ret = usb_register(&sd_driver);
721 if (ret < 0)
722 return ret;
723 return 0;
724}
725static void __exit sd_mod_exit(void)
726{
727 usb_deregister(&sd_driver);
728}
729
730module_init(sd_mod_init);
731module_exit(sd_mod_exit);