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Merge branch 'for-linus' of git://git.infradead.org/users/sameo/mfd-2.6
[linux-btrfs-devel.git] / drivers / media / video / gspca / gl860 / gl860.c
blobe8e071aa212f4ac23514ac32c83327c4a2e0519e
1 /* GSPCA subdrivers for Genesys Logic webcams with the GL860 chip
2 * Subdriver core
3 *
4 * 2009/09/24 Olivier Lorin <o.lorin@laposte.net>
5 * GSPCA by Jean-Francois Moine <http://moinejf.free.fr>
6 * Thanks BUGabundo and Malmostoso for your amazing help!
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21 #include "gspca.h"
22 #include "gl860.h"
23
24 MODULE_AUTHOR("Olivier Lorin <o.lorin@laposte.net>");
25 MODULE_DESCRIPTION("Genesys Logic USB PC Camera Driver");
26 MODULE_LICENSE("GPL");
27
28 /*======================== static function declarations ====================*/
29
30 static void (*dev_init_settings)(struct gspca_dev *gspca_dev);
31
32 static int sd_config(struct gspca_dev *gspca_dev,
33 const struct usb_device_id *id);
34 static int sd_init(struct gspca_dev *gspca_dev);
35 static int sd_isoc_init(struct gspca_dev *gspca_dev);
36 static int sd_start(struct gspca_dev *gspca_dev);
37 static void sd_stop0(struct gspca_dev *gspca_dev);
38 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
39 u8 *data, int len);
40 static void sd_callback(struct gspca_dev *gspca_dev);
41
42 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
43 u16 vendor_id, u16 product_id);
44
45 /*============================ driver options ==============================*/
46
47 static s32 AC50Hz = 0xff;
48 module_param(AC50Hz, int, 0644);
49 MODULE_PARM_DESC(AC50Hz, " Does AC power frequency is 50Hz? (0/1)");
50
51 static char sensor[7];
52 module_param_string(sensor, sensor, sizeof(sensor), 0644);
53 MODULE_PARM_DESC(sensor,
54 " Driver sensor ('MI1320'/'MI2020'/'OV9655'/'OV2640')");
55
56 /*============================ webcam controls =============================*/
57
58 /* Functions to get and set a control value */
59 #define SD_SETGET(thename) \
60 static int sd_set_##thename(struct gspca_dev *gspca_dev, s32 val)\
61 {\
62 struct sd *sd = (struct sd *) gspca_dev;\
63 \
64 sd->vcur.thename = val;\
65 if (gspca_dev->streaming)\
66 sd->waitSet = 1;\
67 return 0;\
68 } \
69 static int sd_get_##thename(struct gspca_dev *gspca_dev, s32 *val)\
70 {\
71 struct sd *sd = (struct sd *) gspca_dev;\
72 \
73 *val = sd->vcur.thename;\
74 return 0;\
75 }
76
77 SD_SETGET(mirror)
78 SD_SETGET(flip)
79 SD_SETGET(AC50Hz)
80 SD_SETGET(backlight)
81 SD_SETGET(brightness)
82 SD_SETGET(gamma)
83 SD_SETGET(hue)
84 SD_SETGET(saturation)
85 SD_SETGET(sharpness)
86 SD_SETGET(whitebal)
87 SD_SETGET(contrast)
88
89 #define GL860_NCTRLS 11
90
91 /* control table */
92 static struct ctrl sd_ctrls_mi1320[GL860_NCTRLS];
93 static struct ctrl sd_ctrls_mi2020[GL860_NCTRLS];
94 static struct ctrl sd_ctrls_ov2640[GL860_NCTRLS];
95 static struct ctrl sd_ctrls_ov9655[GL860_NCTRLS];
96
97 #define SET_MY_CTRL(theid, \
98 thetype, thelabel, thename) \
99 if (sd->vmax.thename != 0) {\
100 sd_ctrls[nCtrls].qctrl.id = theid;\
101 sd_ctrls[nCtrls].qctrl.type = thetype;\
102 strcpy(sd_ctrls[nCtrls].qctrl.name, thelabel);\
103 sd_ctrls[nCtrls].qctrl.minimum = 0;\
104 sd_ctrls[nCtrls].qctrl.maximum = sd->vmax.thename;\
105 sd_ctrls[nCtrls].qctrl.default_value = sd->vcur.thename;\
106 sd_ctrls[nCtrls].qctrl.step = \
107 (sd->vmax.thename < 16) ? 1 : sd->vmax.thename/16;\
108 sd_ctrls[nCtrls].set = sd_set_##thename;\
109 sd_ctrls[nCtrls].get = sd_get_##thename;\
110 nCtrls++;\
111 }
112
113 static int gl860_build_control_table(struct gspca_dev *gspca_dev)
114 {
115 struct sd *sd = (struct sd *) gspca_dev;
116 struct ctrl *sd_ctrls;
117 int nCtrls = 0;
118
119 if (_MI1320_)
120 sd_ctrls = sd_ctrls_mi1320;
121 else if (_MI2020_)
122 sd_ctrls = sd_ctrls_mi2020;
123 else if (_OV2640_)
124 sd_ctrls = sd_ctrls_ov2640;
125 else if (_OV9655_)
126 sd_ctrls = sd_ctrls_ov9655;
127 else
128 return 0;
129
130 memset(sd_ctrls, 0, GL860_NCTRLS * sizeof(struct ctrl));
131
132 SET_MY_CTRL(V4L2_CID_BRIGHTNESS,
133 V4L2_CTRL_TYPE_INTEGER, "Brightness", brightness)
134 SET_MY_CTRL(V4L2_CID_SHARPNESS,
135 V4L2_CTRL_TYPE_INTEGER, "Sharpness", sharpness)
136 SET_MY_CTRL(V4L2_CID_CONTRAST,
137 V4L2_CTRL_TYPE_INTEGER, "Contrast", contrast)
138 SET_MY_CTRL(V4L2_CID_GAMMA,
139 V4L2_CTRL_TYPE_INTEGER, "Gamma", gamma)
140 SET_MY_CTRL(V4L2_CID_HUE,
141 V4L2_CTRL_TYPE_INTEGER, "Palette", hue)
142 SET_MY_CTRL(V4L2_CID_SATURATION,
143 V4L2_CTRL_TYPE_INTEGER, "Saturation", saturation)
144 SET_MY_CTRL(V4L2_CID_WHITE_BALANCE_TEMPERATURE,
145 V4L2_CTRL_TYPE_INTEGER, "White Bal.", whitebal)
146 SET_MY_CTRL(V4L2_CID_BACKLIGHT_COMPENSATION,
147 V4L2_CTRL_TYPE_INTEGER, "Backlight" , backlight)
148
149 SET_MY_CTRL(V4L2_CID_HFLIP,
150 V4L2_CTRL_TYPE_BOOLEAN, "Mirror", mirror)
151 SET_MY_CTRL(V4L2_CID_VFLIP,
152 V4L2_CTRL_TYPE_BOOLEAN, "Flip", flip)
153 SET_MY_CTRL(V4L2_CID_POWER_LINE_FREQUENCY,
154 V4L2_CTRL_TYPE_BOOLEAN, "AC power 50Hz", AC50Hz)
155
156 return nCtrls;
157 }
158
159 /*==================== sud-driver structure initialisation =================*/
160
161 static const struct sd_desc sd_desc_mi1320 = {
162 .name = MODULE_NAME,
163 .ctrls = sd_ctrls_mi1320,
164 .nctrls = GL860_NCTRLS,
165 .config = sd_config,
166 .init = sd_init,
167 .isoc_init = sd_isoc_init,
168 .start = sd_start,
169 .stop0 = sd_stop0,
170 .pkt_scan = sd_pkt_scan,
171 .dq_callback = sd_callback,
172 };
173
174 static const struct sd_desc sd_desc_mi2020 = {
175 .name = MODULE_NAME,
176 .ctrls = sd_ctrls_mi2020,
177 .nctrls = GL860_NCTRLS,
178 .config = sd_config,
179 .init = sd_init,
180 .isoc_init = sd_isoc_init,
181 .start = sd_start,
182 .stop0 = sd_stop0,
183 .pkt_scan = sd_pkt_scan,
184 .dq_callback = sd_callback,
185 };
186
187 static const struct sd_desc sd_desc_ov2640 = {
188 .name = MODULE_NAME,
189 .ctrls = sd_ctrls_ov2640,
190 .nctrls = GL860_NCTRLS,
191 .config = sd_config,
192 .init = sd_init,
193 .isoc_init = sd_isoc_init,
194 .start = sd_start,
195 .stop0 = sd_stop0,
196 .pkt_scan = sd_pkt_scan,
197 .dq_callback = sd_callback,
198 };
199
200 static const struct sd_desc sd_desc_ov9655 = {
201 .name = MODULE_NAME,
202 .ctrls = sd_ctrls_ov9655,
203 .nctrls = GL860_NCTRLS,
204 .config = sd_config,
205 .init = sd_init,
206 .isoc_init = sd_isoc_init,
207 .start = sd_start,
208 .stop0 = sd_stop0,
209 .pkt_scan = sd_pkt_scan,
210 .dq_callback = sd_callback,
211 };
212
213 /*=========================== sub-driver image sizes =======================*/
214
215 static struct v4l2_pix_format mi2020_mode[] = {
216 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
217 .bytesperline = 640,
218 .sizeimage = 640 * 480,
219 .colorspace = V4L2_COLORSPACE_SRGB,
220 .priv = 0
221 },
222 { 800, 598, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
223 .bytesperline = 800,
224 .sizeimage = 800 * 598,
225 .colorspace = V4L2_COLORSPACE_SRGB,
226 .priv = 1
227 },
228 {1280, 1024, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
229 .bytesperline = 1280,
230 .sizeimage = 1280 * 1024,
231 .colorspace = V4L2_COLORSPACE_SRGB,
232 .priv = 2
233 },
234 {1600, 1198, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
235 .bytesperline = 1600,
236 .sizeimage = 1600 * 1198,
237 .colorspace = V4L2_COLORSPACE_SRGB,
238 .priv = 3
239 },
240 };
241
242 static struct v4l2_pix_format ov2640_mode[] = {
243 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
244 .bytesperline = 640,
245 .sizeimage = 640 * 480,
246 .colorspace = V4L2_COLORSPACE_SRGB,
247 .priv = 0
248 },
249 { 800, 600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
250 .bytesperline = 800,
251 .sizeimage = 800 * 600,
252 .colorspace = V4L2_COLORSPACE_SRGB,
253 .priv = 1
254 },
255 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
256 .bytesperline = 1280,
257 .sizeimage = 1280 * 960,
258 .colorspace = V4L2_COLORSPACE_SRGB,
259 .priv = 2
260 },
261 {1600, 1200, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
262 .bytesperline = 1600,
263 .sizeimage = 1600 * 1200,
264 .colorspace = V4L2_COLORSPACE_SRGB,
265 .priv = 3
266 },
267 };
268
269 static struct v4l2_pix_format mi1320_mode[] = {
270 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
271 .bytesperline = 640,
272 .sizeimage = 640 * 480,
273 .colorspace = V4L2_COLORSPACE_SRGB,
274 .priv = 0
275 },
276 { 800, 600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
277 .bytesperline = 800,
278 .sizeimage = 800 * 600,
279 .colorspace = V4L2_COLORSPACE_SRGB,
280 .priv = 1
281 },
282 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
283 .bytesperline = 1280,
284 .sizeimage = 1280 * 960,
285 .colorspace = V4L2_COLORSPACE_SRGB,
286 .priv = 2
287 },
288 };
289
290 static struct v4l2_pix_format ov9655_mode[] = {
291 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
292 .bytesperline = 640,
293 .sizeimage = 640 * 480,
294 .colorspace = V4L2_COLORSPACE_SRGB,
295 .priv = 0
296 },
297 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
298 .bytesperline = 1280,
299 .sizeimage = 1280 * 960,
300 .colorspace = V4L2_COLORSPACE_SRGB,
301 .priv = 1
302 },
303 };
304
305 /*========================= sud-driver functions ===========================*/
306
307 /* This function is called at probe time */
308 static int sd_config(struct gspca_dev *gspca_dev,
309 const struct usb_device_id *id)
310 {
311 struct sd *sd = (struct sd *) gspca_dev;
312 struct cam *cam;
313 u16 vendor_id, product_id;
314
315 /* Get USB VendorID and ProductID */
316 vendor_id = id->idVendor;
317 product_id = id->idProduct;
318
319 sd->nbRightUp = 1;
320 sd->nbIm = -1;
321
322 sd->sensor = 0xff;
323 if (strcmp(sensor, "MI1320") == 0)
324 sd->sensor = ID_MI1320;
325 else if (strcmp(sensor, "OV2640") == 0)
326 sd->sensor = ID_OV2640;
327 else if (strcmp(sensor, "OV9655") == 0)
328 sd->sensor = ID_OV9655;
329 else if (strcmp(sensor, "MI2020") == 0)
330 sd->sensor = ID_MI2020;
331
332 /* Get sensor and set the suitable init/start/../stop functions */
333 if (gl860_guess_sensor(gspca_dev, vendor_id, product_id) == -1)
334 return -1;
335
336 cam = &gspca_dev->cam;
337 gspca_dev->nbalt = 4;
338
339 switch (sd->sensor) {
340 case ID_MI1320:
341 gspca_dev->sd_desc = &sd_desc_mi1320;
342 cam->cam_mode = mi1320_mode;
343 cam->nmodes = ARRAY_SIZE(mi1320_mode);
344 dev_init_settings = mi1320_init_settings;
345 break;
346
347 case ID_MI2020:
348 gspca_dev->sd_desc = &sd_desc_mi2020;
349 cam->cam_mode = mi2020_mode;
350 cam->nmodes = ARRAY_SIZE(mi2020_mode);
351 dev_init_settings = mi2020_init_settings;
352 break;
353
354 case ID_OV2640:
355 gspca_dev->sd_desc = &sd_desc_ov2640;
356 cam->cam_mode = ov2640_mode;
357 cam->nmodes = ARRAY_SIZE(ov2640_mode);
358 dev_init_settings = ov2640_init_settings;
359 break;
360
361 case ID_OV9655:
362 gspca_dev->sd_desc = &sd_desc_ov9655;
363 cam->cam_mode = ov9655_mode;
364 cam->nmodes = ARRAY_SIZE(ov9655_mode);
365 dev_init_settings = ov9655_init_settings;
366 break;
367 }
368
369 dev_init_settings(gspca_dev);
370 if (AC50Hz != 0xff)
371 ((struct sd *) gspca_dev)->vcur.AC50Hz = AC50Hz;
372 gl860_build_control_table(gspca_dev);
373
374 return 0;
375 }
376
377 /* This function is called at probe time after sd_config */
378 static int sd_init(struct gspca_dev *gspca_dev)
379 {
380 struct sd *sd = (struct sd *) gspca_dev;
381
382 return sd->dev_init_at_startup(gspca_dev);
383 }
384
385 /* This function is called before to choose the alt setting */
386 static int sd_isoc_init(struct gspca_dev *gspca_dev)
387 {
388 struct sd *sd = (struct sd *) gspca_dev;
389
390 return sd->dev_configure_alt(gspca_dev);
391 }
392
393 /* This function is called to start the webcam */
394 static int sd_start(struct gspca_dev *gspca_dev)
395 {
396 struct sd *sd = (struct sd *) gspca_dev;
397
398 return sd->dev_init_pre_alt(gspca_dev);
399 }
400
401 /* This function is called to stop the webcam */
402 static void sd_stop0(struct gspca_dev *gspca_dev)
403 {
404 struct sd *sd = (struct sd *) gspca_dev;
405
406 return sd->dev_post_unset_alt(gspca_dev);
407 }
408
409 /* This function is called when an image is being received */
410 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
411 u8 *data, int len)
412 {
413 struct sd *sd = (struct sd *) gspca_dev;
414 static s32 nSkipped;
415
416 s32 mode = (s32) gspca_dev->curr_mode;
417 s32 nToSkip =
418 sd->swapRB * (gspca_dev->cam.cam_mode[mode].bytesperline + 1);
419
420 /* Test only against 0202h, so endianess does not matter */
421 switch (*(s16 *) data) {
422 case 0x0202: /* End of frame, start a new one */
423 gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
424 nSkipped = 0;
425 if (sd->nbIm >= 0 && sd->nbIm < 10)
426 sd->nbIm++;
427 gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
428 break;
429
430 default:
431 data += 2;
432 len -= 2;
433 if (nSkipped + len <= nToSkip)
434 nSkipped += len;
435 else {
436 if (nSkipped < nToSkip && nSkipped + len > nToSkip) {
437 data += nToSkip - nSkipped;
438 len -= nToSkip - nSkipped;
439 nSkipped = nToSkip + 1;
440 }
441 gspca_frame_add(gspca_dev,
442 INTER_PACKET, data, len);
443 }
444 break;
445 }
446 }
447
448 /* This function is called when an image has been read */
449 /* This function is used to monitor webcam orientation */
450 static void sd_callback(struct gspca_dev *gspca_dev)
451 {
452 struct sd *sd = (struct sd *) gspca_dev;
453
454 if (!_OV9655_) {
455 u8 state;
456 u8 upsideDown;
457
458 /* Probe sensor orientation */
459 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, (void *)&state);
460
461 /* C8/40 means upside-down (looking backwards) */
462 /* D8/50 means right-up (looking onwards) */
463 upsideDown = (state == 0xc8 || state == 0x40);
464
465 if (upsideDown && sd->nbRightUp > -4) {
466 if (sd->nbRightUp > 0)
467 sd->nbRightUp = 0;
468 if (sd->nbRightUp == -3) {
469 sd->mirrorMask = 1;
470 sd->waitSet = 1;
471 }
472 sd->nbRightUp--;
473 }
474 if (!upsideDown && sd->nbRightUp < 4) {
475 if (sd->nbRightUp < 0)
476 sd->nbRightUp = 0;
477 if (sd->nbRightUp == 3) {
478 sd->mirrorMask = 0;
479 sd->waitSet = 1;
480 }
481 sd->nbRightUp++;
482 }
483 }
484
485 if (sd->waitSet)
486 sd->dev_camera_settings(gspca_dev);
487 }
488
489 /*=================== USB driver structure initialisation ==================*/
490
491 static const struct usb_device_id device_table[] = {
492 {USB_DEVICE(0x05e3, 0x0503)},
493 {USB_DEVICE(0x05e3, 0xf191)},
494 {}
495 };
496
497 MODULE_DEVICE_TABLE(usb, device_table);
498
499 static int sd_probe(struct usb_interface *intf,
500 const struct usb_device_id *id)
501 {
502 return gspca_dev_probe(intf, id,
503 &sd_desc_mi1320, sizeof(struct sd), THIS_MODULE);
504 }
505
506 static void sd_disconnect(struct usb_interface *intf)
507 {
508 gspca_disconnect(intf);
509 }
510
511 static struct usb_driver sd_driver = {
512 .name = MODULE_NAME,
513 .id_table = device_table,
514 .probe = sd_probe,
515 .disconnect = sd_disconnect,
516 #ifdef CONFIG_PM
517 .suspend = gspca_suspend,
518 .resume = gspca_resume,
519 #endif
520 };
521
522 /*====================== Init and Exit module functions ====================*/
523
524 static int __init sd_mod_init(void)
525 {
526 PDEBUG(D_PROBE, "driver startup - version %s", DRIVER_VERSION);
527
528 if (usb_register(&sd_driver) < 0)
529 return -1;
530 return 0;
531 }
532
533 static void __exit sd_mod_exit(void)
534 {
535 usb_deregister(&sd_driver);
536 }
537
538 module_init(sd_mod_init);
539 module_exit(sd_mod_exit);
540
541 /*==========================================================================*/
542
543 int gl860_RTx(struct gspca_dev *gspca_dev,
544 unsigned char pref, u32 req, u16 val, u16 index,
545 s32 len, void *pdata)
546 {
547 struct usb_device *udev = gspca_dev->dev;
548 s32 r = 0;
549
550 if (pref == 0x40) { /* Send */
551 if (len > 0) {
552 memcpy(gspca_dev->usb_buf, pdata, len);
553 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
554 req, pref, val, index,
555 gspca_dev->usb_buf,
556 len, 400 + 200 * (len > 1));
557 } else {
558 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
559 req, pref, val, index, NULL, len, 400);
560 }
561 } else { /* Receive */
562 if (len > 0) {
563 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
564 req, pref, val, index,
565 gspca_dev->usb_buf,
566 len, 400 + 200 * (len > 1));
567 memcpy(pdata, gspca_dev->usb_buf, len);
568 } else {
569 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
570 req, pref, val, index, NULL, len, 400);
571 }
572 }
573
574 if (r < 0)
575 err("ctrl transfer failed %4d "
576 "[p%02x r%d v%04x i%04x len%d]",
577 r, pref, req, val, index, len);
578 else if (len > 1 && r < len)
579 PDEBUG(D_ERR, "short ctrl transfer %d/%d", r, len);
580
581 msleep(1);
582
583 return r;
584 }
585
586 int fetch_validx(struct gspca_dev *gspca_dev, struct validx *tbl, int len)
587 {
588 int n;
589
590 for (n = 0; n < len; n++) {
591 if (tbl[n].idx != 0xffff)
592 ctrl_out(gspca_dev, 0x40, 1, tbl[n].val,
593 tbl[n].idx, 0, NULL);
594 else if (tbl[n].val == 0xffff)
595 break;
596 else
597 msleep(tbl[n].val);
598 }
599 return n;
600 }
601
602 int keep_on_fetching_validx(struct gspca_dev *gspca_dev, struct validx *tbl,
603 int len, int n)
604 {
605 while (++n < len) {
606 if (tbl[n].idx != 0xffff)
607 ctrl_out(gspca_dev, 0x40, 1, tbl[n].val, tbl[n].idx,
608 0, NULL);
609 else if (tbl[n].val == 0xffff)
610 break;
611 else
612 msleep(tbl[n].val);
613 }
614 return n;
615 }
616
617 void fetch_idxdata(struct gspca_dev *gspca_dev, struct idxdata *tbl, int len)
618 {
619 int n;
620
621 for (n = 0; n < len; n++) {
622 if (memcmp(tbl[n].data, "\xff\xff\xff", 3) != 0)
623 ctrl_out(gspca_dev, 0x40, 3, 0x7a00, tbl[n].idx,
624 3, tbl[n].data);
625 else
626 msleep(tbl[n].idx);
627 }
628 }
629
630 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
631 u16 vendor_id, u16 product_id)
632 {
633 struct sd *sd = (struct sd *) gspca_dev;
634 u8 probe, nb26, nb96, nOV, ntry;
635
636 if (product_id == 0xf191)
637 sd->sensor = ID_MI1320;
638
639 if (sd->sensor == 0xff) {
640 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
641 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
642
643 ctrl_out(gspca_dev, 0x40, 1, 0x0000, 0x0000, 0, NULL);
644 msleep(3);
645 ctrl_out(gspca_dev, 0x40, 1, 0x0010, 0x0010, 0, NULL);
646 msleep(3);
647 ctrl_out(gspca_dev, 0x40, 1, 0x0008, 0x00c0, 0, NULL);
648 msleep(3);
649 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c1, 0, NULL);
650 msleep(3);
651 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c2, 0, NULL);
652 msleep(3);
653 ctrl_out(gspca_dev, 0x40, 1, 0x0020, 0x0006, 0, NULL);
654 msleep(3);
655 ctrl_out(gspca_dev, 0x40, 1, 0x006a, 0x000d, 0, NULL);
656 msleep(56);
657
658 PDEBUG(D_PROBE, "probing for sensor MI2020 or OVXXXX");
659 nOV = 0;
660 for (ntry = 0; ntry < 4; ntry++) {
661 ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000, 0, NULL);
662 msleep(3);
663 ctrl_out(gspca_dev, 0x40, 1, 0x0063, 0x0006, 0, NULL);
664 msleep(3);
665 ctrl_out(gspca_dev, 0x40, 1, 0x7a00, 0x8030, 0, NULL);
666 msleep(10);
667 ctrl_in(gspca_dev, 0xc0, 2, 0x7a00, 0x8030, 1, &probe);
668 PDEBUG(D_PROBE, "probe=0x%02x", probe);
669 if (probe == 0xff)
670 nOV++;
671 }
672
673 if (nOV) {
674 PDEBUG(D_PROBE, "0xff -> OVXXXX");
675 PDEBUG(D_PROBE, "probing for sensor OV2640 or OV9655");
676
677 nb26 = nb96 = 0;
678 for (ntry = 0; ntry < 4; ntry++) {
679 ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000,
680 0, NULL);
681 msleep(3);
682 ctrl_out(gspca_dev, 0x40, 1, 0x6000, 0x800a,
683 0, NULL);
684 msleep(10);
685
686 /* Wait for 26(OV2640) or 96(OV9655) */
687 ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x800a,
688 1, &probe);
689
690 if (probe == 0x26 || probe == 0x40) {
691 PDEBUG(D_PROBE,
692 "probe=0x%02x -> OV2640",
693 probe);
694 sd->sensor = ID_OV2640;
695 nb26 += 4;
696 break;
697 }
698 if (probe == 0x96 || probe == 0x55) {
699 PDEBUG(D_PROBE,
700 "probe=0x%02x -> OV9655",
701 probe);
702 sd->sensor = ID_OV9655;
703 nb96 += 4;
704 break;
705 }
706 PDEBUG(D_PROBE, "probe=0x%02x", probe);
707 if (probe == 0x00)
708 nb26++;
709 if (probe == 0xff)
710 nb96++;
711 msleep(3);
712 }
713 if (nb26 < 4 && nb96 < 4)
714 return -1;
715 } else {
716 PDEBUG(D_PROBE, "Not any 0xff -> MI2020");
717 sd->sensor = ID_MI2020;
718 }
719 }
720
721 if (_MI1320_) {
722 PDEBUG(D_PROBE, "05e3:f191 sensor MI1320 (1.3M)");
723 } else if (_MI2020_) {
724 PDEBUG(D_PROBE, "05e3:0503 sensor MI2020 (2.0M)");
725 } else if (_OV9655_) {
726 PDEBUG(D_PROBE, "05e3:0503 sensor OV9655 (1.3M)");
727 } else if (_OV2640_) {
728 PDEBUG(D_PROBE, "05e3:0503 sensor OV2640 (2.0M)");
729 } else {
730 PDEBUG(D_PROBE, "***** Unknown sensor *****");
731 return -1;
732 }
733
734 return 0;
735 }
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