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V4L/DVB (12954): gspca - gl860: Addition of GL860 based webcams
[mirror_ubuntu-artful-kernel.git] / drivers / media / video / gspca / gl860 / gl860.c
1 /* @file gl860.c
2 * @date 2009-08-27
3 *
4 * Genesys Logic webcam with gl860 subdrivers
5 *
6 * Driver by Olivier Lorin <o.lorin@laposte.net>
7 * GSPCA by Jean-Francois Moine <http://moinejf.free.fr>
8 * Thanks BUGabundo and Malmostoso for your amazing help!
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23 #include "gspca.h"
24 #include "gl860.h"
25
26 MODULE_AUTHOR("Olivier Lorin <lorin@laposte.net>");
27 MODULE_DESCRIPTION("GSPCA/Genesys Logic GL860 USB Camera Driver");
28 MODULE_LICENSE("GPL");
29
30 /*======================== static function declarations ====================*/
31
32 static void (*dev_init_settings)(struct gspca_dev *gspca_dev);
33
34 static int sd_config(struct gspca_dev *gspca_dev,
35 const struct usb_device_id *id);
36 static int sd_init(struct gspca_dev *gspca_dev);
37 static int sd_isoc_init(struct gspca_dev *gspca_dev);
38 static int sd_start(struct gspca_dev *gspca_dev);
39 static void sd_stop0(struct gspca_dev *gspca_dev);
40 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
41 struct gspca_frame *frame, u8 *data, s32 len);
42 static void sd_callback(struct gspca_dev *gspca_dev);
43
44 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
45 s32 vendor_id, s32 product_id);
46
47 /*============================ driver options ==============================*/
48
49 static s32 AC50Hz = 0xff;
50 module_param(AC50Hz, int, 0644);
51 MODULE_PARM_DESC(AC50Hz, " Does AC power frequency is 50Hz? (0/1)");
52
53 static char sensor[7];
54 module_param_string(sensor, sensor, sizeof(sensor), 0644);
55 MODULE_PARM_DESC(sensor,
56 " Driver sensor ('MI1320'/'MI2020'/'OV9655'/'OV2640'/'')");
57
58 /*============================ webcam controls =============================*/
59
60 /* Functions to get and set a control value */
61 #define SD_SETGET(thename) \
62 static int sd_set_##thename(struct gspca_dev *gspca_dev, s32 val)\
63 {\
64 struct sd *sd = (struct sd *) gspca_dev;\
65 \
66 sd->vcur.thename = val;\
67 if (gspca_dev->streaming)\
68 sd->dev_camera_settings(gspca_dev);\
69 return 0;\
70 } \
71 static int sd_get_##thename(struct gspca_dev *gspca_dev, s32 *val)\
72 {\
73 struct sd *sd = (struct sd *) gspca_dev;\
74 \
75 *val = sd->vcur.thename;\
76 return 0;\
77 }
78
79 SD_SETGET(mirror)
80 SD_SETGET(flip)
81 SD_SETGET(AC50Hz)
82 SD_SETGET(backlight)
83 SD_SETGET(brightness)
84 SD_SETGET(gamma)
85 SD_SETGET(hue)
86 SD_SETGET(saturation)
87 SD_SETGET(sharpness)
88 SD_SETGET(whitebal)
89 SD_SETGET(contrast)
90
91 #define GL860_NCTRLS 11
92
93 /* control table */
94 static struct ctrl sd_ctrls_mi1320[GL860_NCTRLS];
95 static struct ctrl sd_ctrls_mi2020[GL860_NCTRLS];
96 static struct ctrl sd_ctrls_mi2020b[GL860_NCTRLS];
97 static struct ctrl sd_ctrls_ov2640[GL860_NCTRLS];
98 static struct ctrl sd_ctrls_ov9655[GL860_NCTRLS];
99
100 #define SET_MY_CTRL(theid, \
101 thetype, thelabel, thename) \
102 if (sd->vmax.thename != 0) {\
103 sd_ctrls[nCtrls].qctrl.id = theid;\
104 sd_ctrls[nCtrls].qctrl.type = thetype;\
105 strcpy(sd_ctrls[nCtrls].qctrl.name, thelabel);\
106 sd_ctrls[nCtrls].qctrl.minimum = 0;\
107 sd_ctrls[nCtrls].qctrl.maximum = sd->vmax.thename;\
108 sd_ctrls[nCtrls].qctrl.default_value = sd->vcur.thename;\
109 sd_ctrls[nCtrls].qctrl.step = \
110 (sd->vmax.thename < 16) ? 1 : sd->vmax.thename/16;\
111 sd_ctrls[nCtrls].set = sd_set_##thename;\
112 sd_ctrls[nCtrls].get = sd_get_##thename;\
113 nCtrls++;\
114 }
115
116 static int gl860_build_control_table(struct gspca_dev *gspca_dev)
117 {
118 struct sd *sd = (struct sd *) gspca_dev;
119 struct ctrl *sd_ctrls;
120 int nCtrls = 0;
121
122 if (_MI1320_)
123 sd_ctrls = sd_ctrls_mi1320;
124 else if (_MI2020_)
125 sd_ctrls = sd_ctrls_mi2020;
126 else if (_MI2020b_)
127 sd_ctrls = sd_ctrls_mi2020b;
128 else if (_OV2640_)
129 sd_ctrls = sd_ctrls_ov2640;
130 else if (_OV9655_)
131 sd_ctrls = sd_ctrls_ov9655;
132
133 memset(sd_ctrls, 0, GL860_NCTRLS * sizeof(struct ctrl));
134
135 SET_MY_CTRL(V4L2_CID_BRIGHTNESS,
136 V4L2_CTRL_TYPE_INTEGER, "Brightness", brightness)
137 SET_MY_CTRL(V4L2_CID_SHARPNESS,
138 V4L2_CTRL_TYPE_INTEGER, "Sharpness", sharpness)
139 SET_MY_CTRL(V4L2_CID_CONTRAST,
140 V4L2_CTRL_TYPE_INTEGER, "Contrast", contrast)
141 SET_MY_CTRL(V4L2_CID_GAMMA,
142 V4L2_CTRL_TYPE_INTEGER, "Gamma", gamma)
143 SET_MY_CTRL(V4L2_CID_HUE,
144 V4L2_CTRL_TYPE_INTEGER, "Palette", hue)
145 SET_MY_CTRL(V4L2_CID_SATURATION,
146 V4L2_CTRL_TYPE_INTEGER, "Saturation", saturation)
147 SET_MY_CTRL(V4L2_CID_WHITE_BALANCE_TEMPERATURE,
148 V4L2_CTRL_TYPE_INTEGER, "White Bal.", whitebal)
149 SET_MY_CTRL(V4L2_CID_BACKLIGHT_COMPENSATION,
150 V4L2_CTRL_TYPE_INTEGER, "Backlight" , backlight)
151
152 SET_MY_CTRL(V4L2_CID_HFLIP,
153 V4L2_CTRL_TYPE_BOOLEAN, "Mirror", mirror)
154 SET_MY_CTRL(V4L2_CID_VFLIP,
155 V4L2_CTRL_TYPE_BOOLEAN, "Flip", flip)
156 SET_MY_CTRL(V4L2_CID_POWER_LINE_FREQUENCY,
157 V4L2_CTRL_TYPE_BOOLEAN, "50Hz", AC50Hz)
158
159 return nCtrls;
160 }
161
162 /*==================== sud-driver structure initialisation =================*/
163
164 static struct sd_desc sd_desc_mi1320 = {
165 .name = MODULE_NAME,
166 .ctrls = sd_ctrls_mi1320,
167 .nctrls = GL860_NCTRLS,
168 .config = sd_config,
169 .init = sd_init,
170 .isoc_init = sd_isoc_init,
171 .start = sd_start,
172 .stop0 = sd_stop0,
173 .pkt_scan = sd_pkt_scan,
174 .dq_callback = sd_callback,
175 };
176
177 static struct sd_desc sd_desc_mi2020 = {
178 .name = MODULE_NAME,
179 .ctrls = sd_ctrls_mi2020,
180 .nctrls = GL860_NCTRLS,
181 .config = sd_config,
182 .init = sd_init,
183 .isoc_init = sd_isoc_init,
184 .start = sd_start,
185 .stop0 = sd_stop0,
186 .pkt_scan = sd_pkt_scan,
187 .dq_callback = sd_callback,
188 };
189
190 static struct sd_desc sd_desc_mi2020b = {
191 .name = MODULE_NAME,
192 .ctrls = sd_ctrls_mi2020b,
193 .nctrls = GL860_NCTRLS,
194 .config = sd_config,
195 .init = sd_init,
196 .isoc_init = sd_isoc_init,
197 .start = sd_start,
198 .stop0 = sd_stop0,
199 .pkt_scan = sd_pkt_scan,
200 .dq_callback = sd_callback,
201 };
202
203 static struct sd_desc sd_desc_ov2640 = {
204 .name = MODULE_NAME,
205 .ctrls = sd_ctrls_ov2640,
206 .nctrls = GL860_NCTRLS,
207 .config = sd_config,
208 .init = sd_init,
209 .isoc_init = sd_isoc_init,
210 .start = sd_start,
211 .stop0 = sd_stop0,
212 .pkt_scan = sd_pkt_scan,
213 .dq_callback = sd_callback,
214 };
215
216 static struct sd_desc sd_desc_ov9655 = {
217 .name = MODULE_NAME,
218 .ctrls = sd_ctrls_ov9655,
219 .nctrls = GL860_NCTRLS,
220 .config = sd_config,
221 .init = sd_init,
222 .isoc_init = sd_isoc_init,
223 .start = sd_start,
224 .stop0 = sd_stop0,
225 .pkt_scan = sd_pkt_scan,
226 .dq_callback = sd_callback,
227 };
228
229 /*=========================== sub-driver image sizes =======================*/
230
231 static struct v4l2_pix_format mi2020_mode[] = {
232 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
233 .bytesperline = 640,
234 .sizeimage = 640 * 480,
235 .colorspace = V4L2_COLORSPACE_SRGB,
236 .priv = 0
237 },
238 { 800, 600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
239 .bytesperline = 800,
240 .sizeimage = 800 * 600,
241 .colorspace = V4L2_COLORSPACE_SRGB,
242 .priv = 1
243 },
244 {1280, 1024, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
245 .bytesperline = 1280,
246 .sizeimage = 1280 * 1024,
247 .colorspace = V4L2_COLORSPACE_SRGB,
248 .priv = 2
249 },
250 {1600, 1200, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
251 .bytesperline = 1600,
252 .sizeimage = 1600 * 1200,
253 .colorspace = V4L2_COLORSPACE_SRGB,
254 .priv = 3
255 },
256 };
257
258 static struct v4l2_pix_format ov2640_mode[] = {
259 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
260 .bytesperline = 640,
261 .sizeimage = 640 * 480,
262 .colorspace = V4L2_COLORSPACE_SRGB,
263 .priv = 0
264 },
265 { 800, 600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
266 .bytesperline = 800,
267 .sizeimage = 800 * 600,
268 .colorspace = V4L2_COLORSPACE_SRGB,
269 .priv = 1
270 },
271 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
272 .bytesperline = 1280,
273 .sizeimage = 1280 * 960,
274 .colorspace = V4L2_COLORSPACE_SRGB,
275 .priv = 2
276 },
277 {1600, 1200, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
278 .bytesperline = 1600,
279 .sizeimage = 1600 * 1200,
280 .colorspace = V4L2_COLORSPACE_SRGB,
281 .priv = 3
282 },
283 };
284
285 static struct v4l2_pix_format mi1320_mode[] = {
286 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
287 .bytesperline = 640,
288 .sizeimage = 640 * 480,
289 .colorspace = V4L2_COLORSPACE_SRGB,
290 .priv = 0
291 },
292 { 800, 600, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
293 .bytesperline = 800,
294 .sizeimage = 800 * 600,
295 .colorspace = V4L2_COLORSPACE_SRGB,
296 .priv = 1
297 },
298 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
299 .bytesperline = 1280,
300 .sizeimage = 1280 * 960,
301 .colorspace = V4L2_COLORSPACE_SRGB,
302 .priv = 2
303 },
304 };
305
306 static struct v4l2_pix_format ov9655_mode[] = {
307 { 640, 480, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
308 .bytesperline = 640,
309 .sizeimage = 640 * 480,
310 .colorspace = V4L2_COLORSPACE_SRGB,
311 .priv = 0
312 },
313 {1280, 960, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
314 .bytesperline = 1280,
315 .sizeimage = 1280 * 960,
316 .colorspace = V4L2_COLORSPACE_SRGB,
317 .priv = 1
318 },
319 };
320
321 /*========================= sud-driver functions ===========================*/
322
323 /* This function is called at probe time */
324 static int sd_config(struct gspca_dev *gspca_dev,
325 const struct usb_device_id *id)
326 {
327 struct sd *sd = (struct sd *) gspca_dev;
328 struct cam *cam;
329 s32 vendor_id, product_id;
330
331 /* Get USB VendorID and ProductID */
332 vendor_id = le16_to_cpu(id->idVendor);
333 product_id = le16_to_cpu(id->idProduct);
334
335 sd->nbRightUp = 1;
336 sd->nbIm = -1;
337
338 sd->sensor = 0xff;
339 if (strcmp(sensor, "MI1320") == 0)
340 sd->sensor = ID_MI1320;
341 else if (strcmp(sensor, "OV2640") == 0)
342 sd->sensor = ID_OV2640;
343 else if (strcmp(sensor, "OV9655") == 0)
344 sd->sensor = ID_OV9655;
345 else if (strcmp(sensor, "MI2020") == 0)
346 sd->sensor = ID_MI2020;
347 else if (strcmp(sensor, "MI2020b") == 0)
348 sd->sensor = ID_MI2020b;
349
350 /* Get sensor and set the suitable init/start/../stop functions */
351 if (gl860_guess_sensor(gspca_dev, vendor_id, product_id) == -1)
352 return -1;
353
354 cam = &gspca_dev->cam;
355 gspca_dev->nbalt = 4;
356
357 switch (sd->sensor) {
358 case ID_MI1320:
359 gspca_dev->sd_desc = &sd_desc_mi1320;
360 cam->cam_mode = mi1320_mode;
361 cam->nmodes = ARRAY_SIZE(mi1320_mode);
362 dev_init_settings = mi1320_init_settings;
363 break;
364
365 case ID_MI2020:
366 gspca_dev->sd_desc = &sd_desc_mi2020;
367 cam->cam_mode = mi2020_mode;
368 cam->nmodes = ARRAY_SIZE(mi2020_mode);
369 dev_init_settings = mi2020_init_settings;
370 break;
371
372 case ID_MI2020b:
373 gspca_dev->sd_desc = &sd_desc_mi2020b;
374 cam->cam_mode = mi2020_mode;
375 cam->nmodes = ARRAY_SIZE(mi2020_mode);
376 dev_init_settings = mi2020_init_settings;
377 break;
378
379 case ID_OV2640:
380 gspca_dev->sd_desc = &sd_desc_ov2640;
381 cam->cam_mode = ov2640_mode;
382 cam->nmodes = ARRAY_SIZE(ov2640_mode);
383 dev_init_settings = ov2640_init_settings;
384 break;
385
386 case ID_OV9655:
387 gspca_dev->sd_desc = &sd_desc_ov9655;
388 cam->cam_mode = ov9655_mode;
389 cam->nmodes = ARRAY_SIZE(ov9655_mode);
390 dev_init_settings = ov9655_init_settings;
391 break;
392 }
393
394 dev_init_settings(gspca_dev);
395 if (AC50Hz != 0xff)
396 ((struct sd *) gspca_dev)->vcur.AC50Hz = AC50Hz;
397 gl860_build_control_table(gspca_dev);
398
399 return 0;
400 }
401
402 /* This function is called at probe time after sd_config */
403 static int sd_init(struct gspca_dev *gspca_dev)
404 {
405 struct sd *sd = (struct sd *) gspca_dev;
406
407 return sd->dev_init_at_startup(gspca_dev);
408 }
409
410 /* This function is called before to choose the alt setting */
411 static int sd_isoc_init(struct gspca_dev *gspca_dev)
412 {
413 struct sd *sd = (struct sd *) gspca_dev;
414
415 return sd->dev_configure_alt(gspca_dev);
416 }
417
418 /* This function is called to start the webcam */
419 static int sd_start(struct gspca_dev *gspca_dev)
420 {
421 struct sd *sd = (struct sd *) gspca_dev;
422
423 return sd->dev_init_pre_alt(gspca_dev);
424 }
425
426 /* This function is called to stop the webcam */
427 static void sd_stop0(struct gspca_dev *gspca_dev)
428 {
429 struct sd *sd = (struct sd *) gspca_dev;
430
431 return sd->dev_post_unset_alt(gspca_dev);
432 }
433
434 /* This function is called when an image is being received */
435 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
436 struct gspca_frame *frame, u8 *data, s32 len)
437 {
438 struct sd *sd = (struct sd *) gspca_dev;
439 static s32 nSkipped;
440
441 s32 mode = (s32) gspca_dev->curr_mode;
442 s32 nToSkip =
443 sd->swapRB * (gspca_dev->cam.cam_mode[mode].bytesperline + 1);
444
445 /* Test only against 0202h, so endianess does not matter */
446 switch (*(s16 *) data) {
447 case 0x0202: /* End of frame, start a new one */
448 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, data, 0);
449 nSkipped = 0;
450 if (sd->nbIm >= 0 && sd->nbIm < 10)
451 sd->nbIm++;
452 gspca_frame_add(gspca_dev, FIRST_PACKET, frame, data, 0);
453 break;
454
455 default:
456 data += 2;
457 len -= 2;
458 if (nSkipped + len <= nToSkip)
459 nSkipped += len;
460 else {
461 if (nSkipped < nToSkip && nSkipped + len > nToSkip) {
462 data += nToSkip - nSkipped;
463 len -= nToSkip - nSkipped;
464 nSkipped = nToSkip + 1;
465 }
466 gspca_frame_add(gspca_dev,
467 INTER_PACKET, frame, data, len);
468 }
469 break;
470 }
471 }
472
473 /* This function is called when an image has been read */
474 /* This function is used to monitor webcam orientation */
475 static void sd_callback(struct gspca_dev *gspca_dev)
476 {
477 struct sd *sd = (struct sd *) gspca_dev;
478
479 if (!_OV9655_) {
480 u8 state;
481 u8 upsideDown;
482
483 /* Probe sensor orientation */
484 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, (void *)&state);
485
486 /* C8/40 means upside-down (looking backwards) */
487 /* D8/50 means right-up (looking onwards) */
488 upsideDown = (state == 0xc8 || state == 0x40);
489
490 if (upsideDown && sd->nbRightUp > -4) {
491 if (sd->nbRightUp > 0)
492 sd->nbRightUp = 0;
493 if (sd->nbRightUp == -3) {
494 sd->mirrorMask = 1;
495 sd->waitSet = 1;
496 }
497 sd->nbRightUp--;
498 }
499 if (!upsideDown && sd->nbRightUp < 4) {
500 if (sd->nbRightUp < 0)
501 sd->nbRightUp = 0;
502 if (sd->nbRightUp == 3) {
503 sd->mirrorMask = 0;
504 sd->waitSet = 1;
505 }
506 sd->nbRightUp++;
507 }
508 }
509
510 if (sd->waitSet)
511 sd->dev_camera_settings(gspca_dev);
512 }
513
514 /*=================== USB driver structure initialisation ==================*/
515
516 static const __devinitdata struct usb_device_id device_table[] = {
517 {USB_DEVICE(0x05e3, 0x0503)},
518 {USB_DEVICE(0x05e3, 0xf191)},
519 {}
520 };
521
522 MODULE_DEVICE_TABLE(usb, device_table);
523
524 static int sd_probe(struct usb_interface *intf,
525 const struct usb_device_id *id)
526 {
527 struct gspca_dev *gspca_dev;
528 s32 ret;
529
530 ret = gspca_dev_probe(intf, id,
531 &sd_desc_mi1320, sizeof(struct sd), THIS_MODULE);
532
533 if (ret >= 0) {
534 gspca_dev = usb_get_intfdata(intf);
535
536 PDEBUG(D_PROBE,
537 "Camera is now controlling video device /dev/video%d",
538 gspca_dev->vdev.minor);
539 }
540
541 return ret;
542 }
543
544 static void sd_disconnect(struct usb_interface *intf)
545 {
546 gspca_disconnect(intf);
547 }
548
549 static struct usb_driver sd_driver = {
550 .name = MODULE_NAME,
551 .id_table = device_table,
552 .probe = sd_probe,
553 .disconnect = sd_disconnect,
554 #ifdef CONFIG_PM
555 .suspend = gspca_suspend,
556 .resume = gspca_resume,
557 #endif
558 };
559
560 /*====================== Init and Exit module functions ====================*/
561
562 static int __init sd_mod_init(void)
563 {
564 PDEBUG(D_PROBE, "driver startup - version %s", DRIVER_VERSION);
565
566 if (usb_register(&sd_driver) < 0)
567 return -1;
568 PDEBUG(D_PROBE, "driver registered");
569
570 return 0;
571 }
572
573 static void __exit sd_mod_exit(void)
574 {
575 usb_deregister(&sd_driver);
576 PDEBUG(D_PROBE, "driver deregistered");
577 }
578
579 module_init(sd_mod_init);
580 module_exit(sd_mod_exit);
581
582 /*==========================================================================*/
583
584 int gl860_RTx(struct gspca_dev *gspca_dev,
585 unsigned char pref, u32 req, u16 val, u16 index,
586 s32 len, void *pdata)
587 {
588 struct usb_device *udev = gspca_dev->dev;
589 s32 r = 0;
590
591 if (pref == 0x40) { /* Send */
592 if (len > 0) {
593 memcpy(gspca_dev->usb_buf, pdata, len);
594 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
595 req, pref, val, index,
596 gspca_dev->usb_buf,
597 len, 400 + 200 * (len > 1));
598 } else {
599 r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
600 req, pref, val, index, NULL, len, 400);
601 }
602 } else { /* Receive */
603 if (len > 0) {
604 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
605 req, pref, val, index,
606 gspca_dev->usb_buf,
607 len, 400 + 200 * (len > 1));
608 memcpy(pdata, gspca_dev->usb_buf, len);
609 } else {
610 r = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
611 req, pref, val, index, NULL, len, 400);
612 }
613 }
614
615 if (r < 0)
616 PDEBUG(D_ERR,
617 "ctrl transfer failed %4d "
618 "[p%02x r%d v%04x i%04x len%d]",
619 r, pref, req, val, index, len);
620 else if (len > 1 && r < len)
621 PDEBUG(D_ERR, "short ctrl transfer %d/%d", r, len);
622
623 if ((_MI2020_ || _MI2020b_ || _MI2020c_) && (val || index))
624 msleep(1);
625 if (_OV2640_)
626 msleep(1);
627
628 return r;
629 }
630
631 int fetch_validx(struct gspca_dev *gspca_dev, struct validx *tbl, int len)
632 {
633 int n;
634
635 for (n = 0; n < len; n++) {
636 if (tbl[n].idx != 0xffff)
637 ctrl_out(gspca_dev, 0x40, 1, tbl[n].val,
638 tbl[n].idx, 0, NULL);
639 else if (tbl[n].val == 0xffff)
640 break;
641 else
642 msleep(tbl[n].val);
643 }
644 return n;
645 }
646
647 int keep_on_fetching_validx(struct gspca_dev *gspca_dev, struct validx *tbl,
648 int len, int n)
649 {
650 while (++n < len) {
651 if (tbl[n].idx != 0xffff)
652 ctrl_out(gspca_dev, 0x40, 1, tbl[n].val, tbl[n].idx,
653 0, NULL);
654 else if (tbl[n].val == 0xffff)
655 break;
656 else
657 msleep(tbl[n].val);
658 }
659 return n;
660 }
661
662 void fetch_idxdata(struct gspca_dev *gspca_dev, struct idxdata *tbl, int len)
663 {
664 int n;
665
666 for (n = 0; n < len; n++) {
667 if (memcmp(tbl[n].data, "\xff\xff\xff", 3) != 0)
668 ctrl_out(gspca_dev, 0x40, 3, 0x7a00, tbl[n].idx,
669 3, tbl[n].data);
670 else
671 msleep(tbl[n].idx);
672 }
673 }
674
675 static int gl860_guess_sensor(struct gspca_dev *gspca_dev,
676 s32 vendor_id, s32 product_id)
677 {
678 struct sd *sd = (struct sd *) gspca_dev;
679 u8 probe, nb26, nb96, nOV, ntry;
680
681 if (product_id == 0xf191)
682 sd->sensor = ID_MI1320;
683
684 if (sd->sensor == 0xff) {
685 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
686 ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0004, 1, &probe);
687
688 ctrl_out(gspca_dev, 0x40, 1, 0x0000, 0x0000, 0, NULL);
689 msleep(3);
690 ctrl_out(gspca_dev, 0x40, 1, 0x0010, 0x0010, 0, NULL);
691 msleep(3);
692 ctrl_out(gspca_dev, 0x40, 1, 0x0008, 0x00c0, 0, NULL);
693 msleep(3);
694 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c1, 0, NULL);
695 msleep(3);
696 ctrl_out(gspca_dev, 0x40, 1, 0x0001, 0x00c2, 0, NULL);
697 msleep(3);
698 ctrl_out(gspca_dev, 0x40, 1, 0x0020, 0x0006, 0, NULL);
699 msleep(3);
700 ctrl_out(gspca_dev, 0x40, 1, 0x006a, 0x000d, 0, NULL);
701 msleep(56);
702
703 nOV = 0;
704 for (ntry = 0; ntry < 4; ntry++) {
705 ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000, 0, NULL);
706 msleep(3);
707 ctrl_out(gspca_dev, 0x40, 1, 0x0063, 0x0006, 0, NULL);
708 msleep(3);
709 ctrl_out(gspca_dev, 0x40, 1, 0x7a00, 0x8030, 0, NULL);
710 msleep(10);
711 ctrl_in(gspca_dev, 0xc0, 2, 0x7a00, 0x8030, 1, &probe);
712 PDEBUG(D_PROBE, "1st probe=%02x", probe);
713 if (probe == 0xff)
714 nOV++;
715 }
716
717 if (nOV) {
718 PDEBUG(D_PROBE, "0xff -> sensor OVXXXX");
719 PDEBUG(D_PROBE, "Probing for sensor OV2640 or OV9655");
720
721 nb26 = nb96 = 0;
722 for (ntry = 0; ntry < 4; ntry++) {
723 ctrl_out(gspca_dev, 0x40, 1, 0x0040, 0x0000,
724 0, NULL);
725 msleep(3);
726 ctrl_out(gspca_dev, 0x40, 1, 0x6000, 0x800a,
727 0, NULL);
728 msleep(10);
729 /* Wait for 26(OV2640) or 96(OV9655) */
730 ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x800a,
731 1, &probe);
732
733 PDEBUG(D_PROBE, "2nd probe=%02x", probe);
734 if (probe == 0x00)
735 nb26++;
736 if (probe == 0x26 || probe == 0x40) {
737 sd->sensor = ID_OV2640;
738 nb26 += 4;
739 break;
740 }
741 if (probe == 0x96 || probe == 0x55) {
742 sd->sensor = ID_OV9655;
743 nb96 += 4;
744 break;
745 }
746 if (probe == 0xff)
747 nb96++;
748 msleep(3);
749 }
750 if (nb26 < 4 && nb96 < 4) {
751 PDEBUG(D_PROBE, "No relevant answer ");
752 PDEBUG(D_PROBE, "* 1.3Mpixels -> use OV9655");
753 PDEBUG(D_PROBE, "* 2.0Mpixels -> use OV2640");
754 PDEBUG(D_PROBE,
755 "To force a sensor, add that line to "
756 "/etc/modprobe.d/options.conf:");
757 PDEBUG(D_PROBE, "options gspca_gl860 "
758 "sensor=\"OV2640\" or \"OV9655\"");
759 return -1;
760 }
761 } else { /* probe = 0 */
762 PDEBUG(D_PROBE, "No 0xff -> sensor MI2020");
763 sd->sensor = ID_MI2020;
764 }
765 }
766
767 if (_MI1320_) {
768 PDEBUG(D_PROBE, "05e3:f191 sensor MI1320 (1.3M)");
769 } else if (_MI2020_) {
770 PDEBUG(D_PROBE, "05e3:0503 sensor MI2020 (2.0M)");
771 } else if (_MI2020b_) {
772 PDEBUG(D_PROBE, "05e3:0503 sensor MI2020 alt. driver (2.0M)");
773 } else if (_OV9655_) {
774 PDEBUG(D_PROBE, "05e3:0503 sensor OV9655 (1.3M)");
775 } else if (_OV2640_) {
776 PDEBUG(D_PROBE, "05e3:0503 sensor OV2640 (2.0M)");
777 } else {
778 PDEBUG(D_PROBE, "***** Unknown sensor *****");
779 return -1;
780 }
781
782 return 0;
783 }
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