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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / media / video / gspca / mr97310a.c
blob140c8f320e4782b83b39342b064c877d26eb85d6
1 /*
2 * Mars MR97310A library
3 *
4 * Copyright (C) 2009 Kyle Guinn <elyk03@gmail.com>
5 *
6 * Support for the MR97310A cameras in addition to the Aiptek Pencam VGA+
7 * and for the routines for detecting and classifying these various cameras,
8 *
9 * Copyright (C) 2009 Theodore Kilgore <kilgota@auburn.edu>
10 *
11 * Acknowledgements:
12 *
13 * The MR97311A support in gspca/mars.c has been helpful in understanding some
14 * of the registers in these cameras.
15 *
16 * Hans de Goede <hdgoede@redhat.com> and
17 * Thomas Kaiser <thomas@kaiser-linux.li>
18 * have assisted with their experience. Each of them has also helped by
19 * testing a previously unsupported camera.
20 *
21 * This program is free software; you can redistribute it and/or modify
22 * it under the terms of the GNU General Public License as published by
23 * the Free Software Foundation; either version 2 of the License, or
24 * any later version.
25 *
26 * This program is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 * GNU General Public License for more details.
30 *
31 * You should have received a copy of the GNU General Public License
32 * along with this program; if not, write to the Free Software
33 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
34 */
35
36 #define MODULE_NAME "mr97310a"
37
38 #include "gspca.h"
39
40 #define CAM_TYPE_CIF 0
41 #define CAM_TYPE_VGA 1
42
43 #define MR97310A_BRIGHTNESS_MIN -254
44 #define MR97310A_BRIGHTNESS_MAX 255
45 #define MR97310A_BRIGHTNESS_DEFAULT 0
46
47 #define MR97310A_EXPOSURE_MIN 300
48 #define MR97310A_EXPOSURE_MAX 4095
49 #define MR97310A_EXPOSURE_DEFAULT 1000
50
51 #define MR97310A_GAIN_MIN 0
52 #define MR97310A_GAIN_MAX 31
53 #define MR97310A_GAIN_DEFAULT 25
54
55 MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>,"
56 "Theodore Kilgore <kilgota@auburn.edu>");
57 MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
58 MODULE_LICENSE("GPL");
59
60 /* global parameters */
61 int force_sensor_type = -1;
62 module_param(force_sensor_type, int, 0644);
63 MODULE_PARM_DESC(force_sensor_type, "Force sensor type (-1 (auto), 0 or 1)");
64
65 /* specific webcam descriptor */
66 struct sd {
67 struct gspca_dev gspca_dev; /* !! must be the first item */
68 u8 sof_read;
69 u8 cam_type; /* 0 is CIF and 1 is VGA */
70 u8 sensor_type; /* We use 0 and 1 here, too. */
71 u8 do_lcd_stop;
72
73 int brightness;
74 u16 exposure;
75 u8 gain;
76 };
77
78 struct sensor_w_data {
79 u8 reg;
80 u8 flags;
81 u8 data[16];
82 int len;
83 };
84
85 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
86 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
87 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
88 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
89 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
90 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
91 static void setbrightness(struct gspca_dev *gspca_dev);
92 static void setexposure(struct gspca_dev *gspca_dev);
93 static void setgain(struct gspca_dev *gspca_dev);
94
95 /* V4L2 controls supported by the driver */
96 static struct ctrl sd_ctrls[] = {
97 {
98 #define BRIGHTNESS_IDX 0
99 {
100 .id = V4L2_CID_BRIGHTNESS,
101 .type = V4L2_CTRL_TYPE_INTEGER,
102 .name = "Brightness",
103 .minimum = MR97310A_BRIGHTNESS_MIN,
104 .maximum = MR97310A_BRIGHTNESS_MAX,
105 .step = 1,
106 .default_value = MR97310A_BRIGHTNESS_DEFAULT,
107 .flags = 0,
108 },
109 .set = sd_setbrightness,
110 .get = sd_getbrightness,
111 },
112 {
113 #define EXPOSURE_IDX 1
114 {
115 .id = V4L2_CID_EXPOSURE,
116 .type = V4L2_CTRL_TYPE_INTEGER,
117 .name = "Exposure",
118 .minimum = MR97310A_EXPOSURE_MIN,
119 .maximum = MR97310A_EXPOSURE_MAX,
120 .step = 1,
121 .default_value = MR97310A_EXPOSURE_DEFAULT,
122 .flags = 0,
123 },
124 .set = sd_setexposure,
125 .get = sd_getexposure,
126 },
127 {
128 #define GAIN_IDX 2
129 {
130 .id = V4L2_CID_GAIN,
131 .type = V4L2_CTRL_TYPE_INTEGER,
132 .name = "Gain",
133 .minimum = MR97310A_GAIN_MIN,
134 .maximum = MR97310A_GAIN_MAX,
135 .step = 1,
136 .default_value = MR97310A_GAIN_DEFAULT,
137 .flags = 0,
138 },
139 .set = sd_setgain,
140 .get = sd_getgain,
141 },
142 };
143
144 static const struct v4l2_pix_format vga_mode[] = {
145 {160, 120, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
146 .bytesperline = 160,
147 .sizeimage = 160 * 120,
148 .colorspace = V4L2_COLORSPACE_SRGB,
149 .priv = 4},
150 {176, 144, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
151 .bytesperline = 176,
152 .sizeimage = 176 * 144,
153 .colorspace = V4L2_COLORSPACE_SRGB,
154 .priv = 3},
155 {320, 240, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
156 .bytesperline = 320,
157 .sizeimage = 320 * 240,
158 .colorspace = V4L2_COLORSPACE_SRGB,
159 .priv = 2},
160 {352, 288, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
161 .bytesperline = 352,
162 .sizeimage = 352 * 288,
163 .colorspace = V4L2_COLORSPACE_SRGB,
164 .priv = 1},
165 {640, 480, V4L2_PIX_FMT_MR97310A, V4L2_FIELD_NONE,
166 .bytesperline = 640,
167 .sizeimage = 640 * 480,
168 .colorspace = V4L2_COLORSPACE_SRGB,
169 .priv = 0},
170 };
171
172 /* the bytes to write are in gspca_dev->usb_buf */
173 static int mr_write(struct gspca_dev *gspca_dev, int len)
174 {
175 int rc;
176
177 rc = usb_bulk_msg(gspca_dev->dev,
178 usb_sndbulkpipe(gspca_dev->dev, 4),
179 gspca_dev->usb_buf, len, NULL, 500);
180 if (rc < 0)
181 PDEBUG(D_ERR, "reg write [%02x] error %d",
182 gspca_dev->usb_buf[0], rc);
183 return rc;
184 }
185
186 /* the bytes are read into gspca_dev->usb_buf */
187 static int mr_read(struct gspca_dev *gspca_dev, int len)
188 {
189 int rc;
190
191 rc = usb_bulk_msg(gspca_dev->dev,
192 usb_rcvbulkpipe(gspca_dev->dev, 3),
193 gspca_dev->usb_buf, len, NULL, 500);
194 if (rc < 0)
195 PDEBUG(D_ERR, "reg read [%02x] error %d",
196 gspca_dev->usb_buf[0], rc);
197 return rc;
198 }
199
200 static int sensor_write_reg(struct gspca_dev *gspca_dev, u8 reg, u8 flags,
201 const u8 *data, int len)
202 {
203 gspca_dev->usb_buf[0] = 0x1f;
204 gspca_dev->usb_buf[1] = flags;
205 gspca_dev->usb_buf[2] = reg;
206 memcpy(gspca_dev->usb_buf + 3, data, len);
207
208 return mr_write(gspca_dev, len + 3);
209 }
210
211 static int sensor_write_regs(struct gspca_dev *gspca_dev,
212 const struct sensor_w_data *data, int len)
213 {
214 int i, rc;
215
216 for (i = 0; i < len; i++) {
217 rc = sensor_write_reg(gspca_dev, data[i].reg, data[i].flags,
218 data[i].data, data[i].len);
219 if (rc < 0)
220 return rc;
221 }
222
223 return 0;
224 }
225
226 static int sensor_write1(struct gspca_dev *gspca_dev, u8 reg, u8 data)
227 {
228 struct sd *sd = (struct sd *) gspca_dev;
229 u8 buf, confirm_reg;
230 int rc;
231
232 buf = data;
233 rc = sensor_write_reg(gspca_dev, reg, 0x01, &buf, 1);
234 if (rc < 0)
235 return rc;
236
237 buf = 0x01;
238 confirm_reg = sd->sensor_type ? 0x13 : 0x11;
239 rc = sensor_write_reg(gspca_dev, confirm_reg, 0x00, &buf, 1);
240 if (rc < 0)
241 return rc;
242
243 return 0;
244 }
245
246 static int cam_get_response16(struct gspca_dev *gspca_dev)
247 {
248 __u8 *data = gspca_dev->usb_buf;
249 int err_code;
250
251 data[0] = 0x21;
252 err_code = mr_write(gspca_dev, 1);
253 if (err_code < 0)
254 return err_code;
255
256 err_code = mr_read(gspca_dev, 16);
257 return err_code;
258 }
259
260 static int zero_the_pointer(struct gspca_dev *gspca_dev)
261 {
262 __u8 *data = gspca_dev->usb_buf;
263 int err_code;
264 u8 status = 0;
265 int tries = 0;
266
267 err_code = cam_get_response16(gspca_dev);
268 if (err_code < 0)
269 return err_code;
270
271 err_code = mr_write(gspca_dev, 1);
272 data[0] = 0x19;
273 data[1] = 0x51;
274 err_code = mr_write(gspca_dev, 2);
275 if (err_code < 0)
276 return err_code;
277
278 err_code = cam_get_response16(gspca_dev);
279 if (err_code < 0)
280 return err_code;
281
282 data[0] = 0x19;
283 data[1] = 0xba;
284 err_code = mr_write(gspca_dev, 2);
285 if (err_code < 0)
286 return err_code;
287
288 err_code = cam_get_response16(gspca_dev);
289 if (err_code < 0)
290 return err_code;
291
292 data[0] = 0x19;
293 data[1] = 0x00;
294 err_code = mr_write(gspca_dev, 2);
295 if (err_code < 0)
296 return err_code;
297
298 err_code = cam_get_response16(gspca_dev);
299 if (err_code < 0)
300 return err_code;
301
302 data[0] = 0x19;
303 data[1] = 0x00;
304 err_code = mr_write(gspca_dev, 2);
305 if (err_code < 0)
306 return err_code;
307
308 while (status != 0x0a && tries < 256) {
309 err_code = cam_get_response16(gspca_dev);
310 status = data[0];
311 tries++;
312 if (err_code < 0)
313 return err_code;
314 }
315 if (status != 0x0a)
316 PDEBUG(D_ERR, "status is %02x", status);
317
318 tries = 0;
319 while (tries < 4) {
320 data[0] = 0x19;
321 data[1] = 0x00;
322 err_code = mr_write(gspca_dev, 2);
323 if (err_code < 0)
324 return err_code;
325
326 err_code = cam_get_response16(gspca_dev);
327 status = data[0];
328 tries++;
329 if (err_code < 0)
330 return err_code;
331 }
332
333 data[0] = 0x19;
334 err_code = mr_write(gspca_dev, 1);
335 if (err_code < 0)
336 return err_code;
337
338 err_code = mr_read(gspca_dev, 16);
339 if (err_code < 0)
340 return err_code;
341
342 return 0;
343 }
344
345 static u8 get_sensor_id(struct gspca_dev *gspca_dev)
346 {
347 int err_code;
348
349 gspca_dev->usb_buf[0] = 0x1e;
350 err_code = mr_write(gspca_dev, 1);
351 if (err_code < 0)
352 return err_code;
353
354 err_code = mr_read(gspca_dev, 16);
355 if (err_code < 0)
356 return err_code;
357
358 PDEBUG(D_PROBE, "Byte zero reported is %01x", gspca_dev->usb_buf[0]);
359
360 return gspca_dev->usb_buf[0];
361 }
362
363 /* this function is called at probe time */
364 static int sd_config(struct gspca_dev *gspca_dev,
365 const struct usb_device_id *id)
366 {
367 struct sd *sd = (struct sd *) gspca_dev;
368 struct cam *cam;
369 __u8 *data = gspca_dev->usb_buf;
370 int err_code;
371
372 cam = &gspca_dev->cam;
373 cam->cam_mode = vga_mode;
374 cam->nmodes = ARRAY_SIZE(vga_mode);
375
376 if (id->idProduct == 0x010e) {
377 sd->cam_type = CAM_TYPE_CIF;
378 cam->nmodes--;
379
380 data[0] = 0x01;
381 data[1] = 0x01;
382 err_code = mr_write(gspca_dev, 2);
383 if (err_code < 0)
384 return err_code;
385
386 msleep(200);
387 data[0] = get_sensor_id(gspca_dev);
388 /*
389 * Known CIF cameras. If you have another to report, please do
390 *
391 * Name byte just read sd->sensor_type
392 * reported by
393 * Sakar Spy-shot 0x28 T. Kilgore 0
394 * Innovage 0xf5 (unstable) T. Kilgore 0
395 * Vivitar Mini 0x53 H. De Goede 0
396 * Vivitar Mini 0x04 / 0x24 E. Rodriguez 0
397 * Vivitar Mini 0x08 T. Kilgore 1
398 * Elta-Media 8212dc 0x23 T. Kaiser 1
399 * Philips dig. keych. 0x37 T. Kilgore 1
400 */
401 if ((data[0] & 0x78) == 8 ||
402 ((data[0] & 0x2) == 0x2 && data[0] != 0x53))
403 sd->sensor_type = 1;
404 else
405 sd->sensor_type = 0;
406
407 PDEBUG(D_PROBE, "MR97310A CIF camera detected, sensor: %d",
408 sd->sensor_type);
409
410 if (force_sensor_type != -1) {
411 sd->sensor_type = !! force_sensor_type;
412 PDEBUG(D_PROBE, "Forcing sensor type to: %d",
413 sd->sensor_type);
414 }
415
416 if (sd->sensor_type == 0)
417 gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX);
418 } else {
419 sd->cam_type = CAM_TYPE_VGA;
420 PDEBUG(D_PROBE, "MR97310A VGA camera detected");
421 gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX) |
422 (1 << EXPOSURE_IDX) | (1 << GAIN_IDX);
423 }
424
425 sd->brightness = MR97310A_BRIGHTNESS_DEFAULT;
426 sd->exposure = MR97310A_EXPOSURE_DEFAULT;
427 sd->gain = MR97310A_GAIN_DEFAULT;
428
429 return 0;
430 }
431
432 /* this function is called at probe and resume time */
433 static int sd_init(struct gspca_dev *gspca_dev)
434 {
435 return 0;
436 }
437
438 static int start_cif_cam(struct gspca_dev *gspca_dev)
439 {
440 struct sd *sd = (struct sd *) gspca_dev;
441 __u8 *data = gspca_dev->usb_buf;
442 int err_code;
443 const __u8 startup_string[] = {
444 0x00,
445 0x0d,
446 0x01,
447 0x00, /* Hsize/8 for 352 or 320 */
448 0x00, /* Vsize/4 for 288 or 240 */
449 0x13, /* or 0xbb, depends on sensor */
450 0x00, /* Hstart, depends on res. */
451 0x00, /* reserved ? */
452 0x00, /* Vstart, depends on res. and sensor */
453 0x50, /* 0x54 to get 176 or 160 */
454 0xc0
455 };
456
457 /* Note: Some of the above descriptions guessed from MR97113A driver */
458 data[0] = 0x01;
459 data[1] = 0x01;
460 err_code = mr_write(gspca_dev, 2);
461 if (err_code < 0)
462 return err_code;
463
464 memcpy(data, startup_string, 11);
465 if (sd->sensor_type)
466 data[5] = 0xbb;
467
468 switch (gspca_dev->width) {
469 case 160:
470 data[9] |= 0x04; /* reg 8, 2:1 scale down from 320 */
471 /* fall thru */
472 case 320:
473 default:
474 data[3] = 0x28; /* reg 2, H size/8 */
475 data[4] = 0x3c; /* reg 3, V size/4 */
476 data[6] = 0x14; /* reg 5, H start */
477 data[8] = 0x1a + sd->sensor_type; /* reg 7, V start */
478 break;
479 case 176:
480 data[9] |= 0x04; /* reg 8, 2:1 scale down from 352 */
481 /* fall thru */
482 case 352:
483 data[3] = 0x2c; /* reg 2, H size/8 */
484 data[4] = 0x48; /* reg 3, V size/4 */
485 data[6] = 0x06; /* reg 5, H start */
486 data[8] = 0x06 + sd->sensor_type; /* reg 7, V start */
487 break;
488 }
489 err_code = mr_write(gspca_dev, 11);
490 if (err_code < 0)
491 return err_code;
492
493 if (!sd->sensor_type) {
494 const struct sensor_w_data cif_sensor0_init_data[] = {
495 {0x02, 0x00, {0x03, 0x5a, 0xb5, 0x01,
496 0x0f, 0x14, 0x0f, 0x10}, 8},
497 {0x0c, 0x00, {0x04, 0x01, 0x01, 0x00, 0x1f}, 5},
498 {0x12, 0x00, {0x07}, 1},
499 {0x1f, 0x00, {0x06}, 1},
500 {0x27, 0x00, {0x04}, 1},
501 {0x29, 0x00, {0x0c}, 1},
502 {0x40, 0x00, {0x40, 0x00, 0x04}, 3},
503 {0x50, 0x00, {0x60}, 1},
504 {0x60, 0x00, {0x06}, 1},
505 {0x6b, 0x00, {0x85, 0x85, 0xc8, 0xc8, 0xc8, 0xc8}, 6},
506 {0x72, 0x00, {0x1e, 0x56}, 2},
507 {0x75, 0x00, {0x58, 0x40, 0xa2, 0x02, 0x31, 0x02,
508 0x31, 0x80, 0x00}, 9},
509 {0x11, 0x00, {0x01}, 1},
510 {0, 0, {0}, 0}
511 };
512 err_code = sensor_write_regs(gspca_dev, cif_sensor0_init_data,
513 ARRAY_SIZE(cif_sensor0_init_data));
514 } else { /* sd->sensor_type = 1 */
515 const struct sensor_w_data cif_sensor1_init_data[] = {
516 /* Reg 3,4, 7,8 get set by the controls */
517 {0x02, 0x00, {0x10}, 1},
518 {0x05, 0x01, {0x22}, 1}, /* 5/6 also seen as 65h/32h */
519 {0x06, 0x01, {0x00}, 1},
520 {0x09, 0x02, {0x0e}, 1},
521 {0x0a, 0x02, {0x05}, 1},
522 {0x0b, 0x02, {0x05}, 1},
523 {0x0c, 0x02, {0x0f}, 1},
524 {0x0d, 0x02, {0x07}, 1},
525 {0x0e, 0x02, {0x0c}, 1},
526 {0x0f, 0x00, {0x00}, 1},
527 {0x10, 0x00, {0x06}, 1},
528 {0x11, 0x00, {0x07}, 1},
529 {0x12, 0x00, {0x00}, 1},
530 {0x13, 0x00, {0x01}, 1},
531 {0, 0, {0}, 0}
532 };
533 err_code = sensor_write_regs(gspca_dev, cif_sensor1_init_data,
534 ARRAY_SIZE(cif_sensor1_init_data));
535 }
536 if (err_code < 0)
537 return err_code;
538
539 setbrightness(gspca_dev);
540 setexposure(gspca_dev);
541 setgain(gspca_dev);
542
543 msleep(200);
544
545 data[0] = 0x00;
546 data[1] = 0x4d; /* ISOC transfering enable... */
547 err_code = mr_write(gspca_dev, 2);
548 if (err_code < 0)
549 return err_code;
550
551 return 0;
552 }
553
554 static int start_vga_cam(struct gspca_dev *gspca_dev)
555 {
556 struct sd *sd = (struct sd *) gspca_dev;
557 __u8 *data = gspca_dev->usb_buf;
558 int err_code;
559 const __u8 startup_string[] = {0x00, 0x0d, 0x01, 0x00, 0x00, 0x2b,
560 0x00, 0x00, 0x00, 0x50, 0xc0};
561
562 /* What some of these mean is explained in start_cif_cam(), above */
563 sd->sof_read = 0;
564
565 /*
566 * We have to know which camera we have, because the register writes
567 * depend upon the camera. This test, run before we actually enter
568 * the initialization routine, distinguishes most of the cameras, If
569 * needed, another routine is done later, too.
570 */
571 memset(data, 0, 16);
572 data[0] = 0x20;
573 err_code = mr_write(gspca_dev, 1);
574 if (err_code < 0)
575 return err_code;
576
577 err_code = mr_read(gspca_dev, 16);
578 if (err_code < 0)
579 return err_code;
580
581 PDEBUG(D_PROBE, "Byte reported is %02x", data[0]);
582
583 msleep(200);
584 /*
585 * Known VGA cameras. If you have another to report, please do
586 *
587 * Name byte just read sd->sensor_type
588 * sd->do_lcd_stop
589 * Aiptek Pencam VGA+ 0x31 0 1
590 * ION digital 0x31 0 1
591 * Argus DC-1620 0x30 1 0
592 * Argus QuickClix 0x30 1 1 (not caught here)
593 */
594 sd->sensor_type = data[0] & 1;
595 sd->do_lcd_stop = (~data[0]) & 1;
596
597
598
599 /* Streaming setup begins here. */
600
601
602 data[0] = 0x01;
603 data[1] = 0x01;
604 err_code = mr_write(gspca_dev, 2);
605 if (err_code < 0)
606 return err_code;
607
608 /*
609 * A second test can now resolve any remaining ambiguity in the
610 * identification of the camera type,
611 */
612 if (!sd->sensor_type) {
613 data[0] = get_sensor_id(gspca_dev);
614 if (data[0] == 0x7f) {
615 sd->sensor_type = 1;
616 PDEBUG(D_PROBE, "sensor_type corrected to 1");
617 }
618 msleep(200);
619 }
620
621 if (force_sensor_type != -1) {
622 sd->sensor_type = !! force_sensor_type;
623 PDEBUG(D_PROBE, "Forcing sensor type to: %d",
624 sd->sensor_type);
625 }
626
627 /*
628 * Known VGA cameras.
629 * This test is only run if the previous test returned 0x30, but
630 * here is the information for all others, too, just for reference.
631 *
632 * Name byte just read sd->sensor_type
633 *
634 * Aiptek Pencam VGA+ 0xfb (this test not run) 1
635 * ION digital 0xbd (this test not run) 1
636 * Argus DC-1620 0xe5 (no change) 0
637 * Argus QuickClix 0x7f (reclassified) 1
638 */
639 memcpy(data, startup_string, 11);
640 if (!sd->sensor_type) {
641 data[5] = 0x00;
642 data[10] = 0x91;
643 }
644
645 switch (gspca_dev->width) {
646 case 160:
647 data[9] |= 0x0c; /* reg 8, 4:1 scale down */
648 /* fall thru */
649 case 320:
650 data[9] |= 0x04; /* reg 8, 2:1 scale down */
651 /* fall thru */
652 case 640:
653 default:
654 data[3] = 0x50; /* reg 2, H size/8 */
655 data[4] = 0x78; /* reg 3, V size/4 */
656 data[6] = 0x04; /* reg 5, H start */
657 data[8] = 0x03; /* reg 7, V start */
658 if (sd->do_lcd_stop)
659 data[8] = 0x04; /* Bayer tile shifted */
660 break;
661
662 case 176:
663 data[9] |= 0x04; /* reg 8, 2:1 scale down */
664 /* fall thru */
665 case 352:
666 data[3] = 0x2c; /* reg 2, H size */
667 data[4] = 0x48; /* reg 3, V size */
668 data[6] = 0x94; /* reg 5, H start */
669 data[8] = 0x63; /* reg 7, V start */
670 if (sd->do_lcd_stop)
671 data[8] = 0x64; /* Bayer tile shifted */
672 break;
673 }
674
675 err_code = mr_write(gspca_dev, 11);
676 if (err_code < 0)
677 return err_code;
678
679 if (!sd->sensor_type) {
680 /* The only known sensor_type 0 cam is the Argus DC-1620 */
681 const struct sensor_w_data vga_sensor0_init_data[] = {
682 {0x01, 0x00, {0x0c, 0x00, 0x04}, 3},
683 {0x14, 0x00, {0x01, 0xe4, 0x02, 0x84}, 4},
684 {0x20, 0x00, {0x00, 0x80, 0x00, 0x08}, 4},
685 {0x25, 0x00, {0x03, 0xa9, 0x80}, 3},
686 {0x30, 0x00, {0x30, 0x18, 0x10, 0x18}, 4},
687 {0, 0, {0}, 0}
688 };
689 err_code = sensor_write_regs(gspca_dev, vga_sensor0_init_data,
690 ARRAY_SIZE(vga_sensor0_init_data));
691 } else { /* sd->sensor_type = 1 */
692 const struct sensor_w_data vga_sensor1_init_data[] = {
693 {0x02, 0x00, {0x06, 0x59, 0x0c, 0x16, 0x00,
694 0x07, 0x00, 0x01}, 8},
695 {0x11, 0x04, {0x01}, 1},
696 /*{0x0a, 0x00, {0x00, 0x01, 0x00, 0x00, 0x01, */
697 {0x0a, 0x00, {0x01, 0x06, 0x00, 0x00, 0x01,
698 0x00, 0x0a}, 7},
699 {0x11, 0x04, {0x01}, 1},
700 {0x12, 0x00, {0x00, 0x63, 0x00, 0x70, 0x00, 0x00}, 6},
701 {0x11, 0x04, {0x01}, 1},
702 {0, 0, {0}, 0}
703 };
704 err_code = sensor_write_regs(gspca_dev, vga_sensor1_init_data,
705 ARRAY_SIZE(vga_sensor1_init_data));
706 }
707 if (err_code < 0)
708 return err_code;
709
710 msleep(200);
711 data[0] = 0x00;
712 data[1] = 0x4d; /* ISOC transfering enable... */
713 err_code = mr_write(gspca_dev, 2);
714
715 return err_code;
716 }
717
718 static int sd_start(struct gspca_dev *gspca_dev)
719 {
720 struct sd *sd = (struct sd *) gspca_dev;
721 int err_code;
722 struct cam *cam;
723
724 cam = &gspca_dev->cam;
725 sd->sof_read = 0;
726 /*
727 * Some of the supported cameras require the memory pointer to be
728 * set to 0, or else they will not stream.
729 */
730 zero_the_pointer(gspca_dev);
731 msleep(200);
732 if (sd->cam_type == CAM_TYPE_CIF) {
733 err_code = start_cif_cam(gspca_dev);
734 } else {
735 err_code = start_vga_cam(gspca_dev);
736 }
737 return err_code;
738 }
739
740 static void sd_stopN(struct gspca_dev *gspca_dev)
741 {
742 struct sd *sd = (struct sd *) gspca_dev;
743 int result;
744
745 gspca_dev->usb_buf[0] = 1;
746 gspca_dev->usb_buf[1] = 0;
747 result = mr_write(gspca_dev, 2);
748 if (result < 0)
749 PDEBUG(D_ERR, "Camera Stop failed");
750
751 /* Not all the cams need this, but even if not, probably a good idea */
752 zero_the_pointer(gspca_dev);
753 if (sd->do_lcd_stop) {
754 gspca_dev->usb_buf[0] = 0x19;
755 gspca_dev->usb_buf[1] = 0x54;
756 result = mr_write(gspca_dev, 2);
757 if (result < 0)
758 PDEBUG(D_ERR, "Camera Stop failed");
759 }
760 }
761
762 static void setbrightness(struct gspca_dev *gspca_dev)
763 {
764 struct sd *sd = (struct sd *) gspca_dev;
765 u8 val;
766
767 if (gspca_dev->ctrl_dis & (1 << BRIGHTNESS_IDX))
768 return;
769
770 /* Note register 7 is also seen as 0x8x or 0xCx in dumps */
771 if (sd->brightness > 0) {
772 sensor_write1(gspca_dev, 7, 0x00);
773 val = sd->brightness;
774 } else {
775 sensor_write1(gspca_dev, 7, 0x01);
776 val = 257 - sd->brightness;
777 }
778 sensor_write1(gspca_dev, 8, val);
779 }
780
781 static void setexposure(struct gspca_dev *gspca_dev)
782 {
783 struct sd *sd = (struct sd *) gspca_dev;
784 u8 val;
785
786 if (gspca_dev->ctrl_dis & (1 << EXPOSURE_IDX))
787 return;
788
789 if (sd->sensor_type) {
790 val = sd->exposure >> 4;
791 sensor_write1(gspca_dev, 3, val);
792 val = sd->exposure & 0xf;
793 sensor_write1(gspca_dev, 4, val);
794 } else {
795 u8 clockdiv;
796 int exposure;
797
798 /* We have both a clock divider and an exposure register.
799 We first calculate the clock divider, as that determines
800 the maximum exposure and then we calculayte the exposure
801 register setting (which goes from 0 - 511).
802
803 Note our 0 - 4095 exposure is mapped to 0 - 511
804 milliseconds exposure time */
805 clockdiv = (60 * sd->exposure + 7999) / 8000;
806
807 /* Limit framerate to not exceed usb bandwidth */
808 if (clockdiv < 3 && gspca_dev->width >= 320)
809 clockdiv = 3;
810 else if (clockdiv < 2)
811 clockdiv = 2;
812
813 /* Frame exposure time in ms = 1000 * clockdiv / 60 ->
814 exposure = (sd->exposure / 8) * 511 / (1000 * clockdiv / 60) */
815 exposure = (60 * 511 * sd->exposure) / (8000 * clockdiv);
816 if (exposure > 511)
817 exposure = 511;
818
819 /* exposure register value is reversed! */
820 exposure = 511 - exposure;
821
822 sensor_write1(gspca_dev, 0x02, clockdiv);
823 sensor_write1(gspca_dev, 0x0e, exposure & 0xff);
824 sensor_write1(gspca_dev, 0x0f, exposure >> 8);
825 }
826 }
827
828 static void setgain(struct gspca_dev *gspca_dev)
829 {
830 struct sd *sd = (struct sd *) gspca_dev;
831
832 if (gspca_dev->ctrl_dis & (1 << GAIN_IDX))
833 return;
834
835 if (sd->sensor_type) {
836 sensor_write1(gspca_dev, 0x0e, sd->gain);
837 } else {
838 sensor_write1(gspca_dev, 0x10, sd->gain);
839 }
840 }
841
842 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
843 {
844 struct sd *sd = (struct sd *) gspca_dev;
845
846 sd->brightness = val;
847 if (gspca_dev->streaming)
848 setbrightness(gspca_dev);
849 return 0;
850 }
851
852 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
853 {
854 struct sd *sd = (struct sd *) gspca_dev;
855
856 *val = sd->brightness;
857 return 0;
858 }
859
860 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
861 {
862 struct sd *sd = (struct sd *) gspca_dev;
863
864 sd->exposure = val;
865 if (gspca_dev->streaming)
866 setexposure(gspca_dev);
867 return 0;
868 }
869
870 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
871 {
872 struct sd *sd = (struct sd *) gspca_dev;
873
874 *val = sd->exposure;
875 return 0;
876 }
877
878 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
879 {
880 struct sd *sd = (struct sd *) gspca_dev;
881
882 sd->gain = val;
883 if (gspca_dev->streaming)
884 setgain(gspca_dev);
885 return 0;
886 }
887
888 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
889 {
890 struct sd *sd = (struct sd *) gspca_dev;
891
892 *val = sd->gain;
893 return 0;
894 }
895
896 /* Include pac common sof detection functions */
897 #include "pac_common.h"
898
899 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
900 struct gspca_frame *frame, /* target */
901 __u8 *data, /* isoc packet */
902 int len) /* iso packet length */
903 {
904 unsigned char *sof;
905
906 sof = pac_find_sof(gspca_dev, data, len);
907 if (sof) {
908 int n;
909
910 /* finish decoding current frame */
911 n = sof - data;
912 if (n > sizeof pac_sof_marker)
913 n -= sizeof pac_sof_marker;
914 else
915 n = 0;
916 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
917 data, n);
918 /* Start next frame. */
919 gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
920 pac_sof_marker, sizeof pac_sof_marker);
921 len -= sof - data;
922 data = sof;
923 }
924 gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
925 }
926
927 /* sub-driver description */
928 static const struct sd_desc sd_desc = {
929 .name = MODULE_NAME,
930 .ctrls = sd_ctrls,
931 .nctrls = ARRAY_SIZE(sd_ctrls),
932 .config = sd_config,
933 .init = sd_init,
934 .start = sd_start,
935 .stopN = sd_stopN,
936 .pkt_scan = sd_pkt_scan,
937 };
938
939 /* -- module initialisation -- */
940 static const __devinitdata struct usb_device_id device_table[] = {
941 {USB_DEVICE(0x08ca, 0x0111)}, /* Aiptek Pencam VGA+ */
942 {USB_DEVICE(0x093a, 0x010f)}, /* All other known MR97310A VGA cams */
943 {USB_DEVICE(0x093a, 0x010e)}, /* All known MR97310A CIF cams */
944 {}
945 };
946 MODULE_DEVICE_TABLE(usb, device_table);
947
948 /* -- device connect -- */
949 static int sd_probe(struct usb_interface *intf,
950 const struct usb_device_id *id)
951 {
952 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
953 THIS_MODULE);
954 }
955
956 static struct usb_driver sd_driver = {
957 .name = MODULE_NAME,
958 .id_table = device_table,
959 .probe = sd_probe,
960 .disconnect = gspca_disconnect,
961 #ifdef CONFIG_PM
962 .suspend = gspca_suspend,
963 .resume = gspca_resume,
964 #endif
965 };
966
967 /* -- module insert / remove -- */
968 static int __init sd_mod_init(void)
969 {
970 int ret;
971
972 ret = usb_register(&sd_driver);
973 if (ret < 0)
974 return ret;
975 PDEBUG(D_PROBE, "registered");
976 return 0;
977 }
978 static void __exit sd_mod_exit(void)
979 {
980 usb_deregister(&sd_driver);
981 PDEBUG(D_PROBE, "deregistered");
982 }
983
984 module_init(sd_mod_init);
985 module_exit(sd_mod_exit);
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