xref: /openbmc/linux/drivers/media/usb/gspca/ov519.c (revision c4ee0af3)
1 /**
2  * OV519 driver
3  *
4  * Copyright (C) 2008-2011 Jean-François Moine <moinejf@free.fr>
5  * Copyright (C) 2009 Hans de Goede <hdegoede@redhat.com>
6  *
7  * This module is adapted from the ov51x-jpeg package, which itself
8  * was adapted from the ov511 driver.
9  *
10  * Original copyright for the ov511 driver is:
11  *
12  * Copyright (c) 1999-2006 Mark W. McClelland
13  * Support for OV519, OV8610 Copyright (c) 2003 Joerg Heckenbach
14  * Many improvements by Bret Wallach <bwallac1@san.rr.com>
15  * Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000)
16  * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org>
17  * Changes by Claudio Matsuoka <claudio@conectiva.com>
18  *
19  * ov51x-jpeg original copyright is:
20  *
21  * Copyright (c) 2004-2007 Romain Beauxis <toots@rastageeks.org>
22  * Support for OV7670 sensors was contributed by Sam Skipsey <aoanla@yahoo.com>
23  *
24  * This program is free software; you can redistribute it and/or modify
25  * it under the terms of the GNU General Public License as published by
26  * the Free Software Foundation; either version 2 of the License, or
27  * any later version.
28  *
29  * This program is distributed in the hope that it will be useful,
30  * but WITHOUT ANY WARRANTY; without even the implied warranty of
31  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32  * GNU General Public License for more details.
33  *
34  * You should have received a copy of the GNU General Public License
35  * along with this program; if not, write to the Free Software
36  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
37  *
38  */
39 
40 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
41 
42 #define MODULE_NAME "ov519"
43 
44 #include <linux/input.h>
45 #include "gspca.h"
46 
47 /* The jpeg_hdr is used by w996Xcf only */
48 /* The CONEX_CAM define for jpeg.h needs renaming, now its used here too */
49 #define CONEX_CAM
50 #include "jpeg.h"
51 
52 MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>");
53 MODULE_DESCRIPTION("OV519 USB Camera Driver");
54 MODULE_LICENSE("GPL");
55 
56 /* global parameters */
57 static int frame_rate;
58 
59 /* Number of times to retry a failed I2C transaction. Increase this if you
60  * are getting "Failed to read sensor ID..." */
61 static int i2c_detect_tries = 10;
62 
63 /* ov519 device descriptor */
64 struct sd {
65 	struct gspca_dev gspca_dev;		/* !! must be the first item */
66 
67 	struct v4l2_ctrl *jpegqual;
68 	struct v4l2_ctrl *freq;
69 	struct { /* h/vflip control cluster */
70 		struct v4l2_ctrl *hflip;
71 		struct v4l2_ctrl *vflip;
72 	};
73 	struct { /* autobrightness/brightness control cluster */
74 		struct v4l2_ctrl *autobright;
75 		struct v4l2_ctrl *brightness;
76 	};
77 
78 	u8 revision;
79 
80 	u8 packet_nr;
81 
82 	char bridge;
83 #define BRIDGE_OV511		0
84 #define BRIDGE_OV511PLUS	1
85 #define BRIDGE_OV518		2
86 #define BRIDGE_OV518PLUS	3
87 #define BRIDGE_OV519		4		/* = ov530 */
88 #define BRIDGE_OVFX2		5
89 #define BRIDGE_W9968CF		6
90 #define BRIDGE_MASK		7
91 
92 	char invert_led;
93 #define BRIDGE_INVERT_LED	8
94 
95 	char snapshot_pressed;
96 	char snapshot_needs_reset;
97 
98 	/* Determined by sensor type */
99 	u8 sif;
100 
101 #define QUALITY_MIN 50
102 #define QUALITY_MAX 70
103 #define QUALITY_DEF 50
104 
105 	u8 stopped;		/* Streaming is temporarily paused */
106 	u8 first_frame;
107 
108 	u8 frame_rate;		/* current Framerate */
109 	u8 clockdiv;		/* clockdiv override */
110 
111 	s8 sensor;		/* Type of image sensor chip (SEN_*) */
112 
113 	u8 sensor_addr;
114 	u16 sensor_width;
115 	u16 sensor_height;
116 	s16 sensor_reg_cache[256];
117 
118 	u8 jpeg_hdr[JPEG_HDR_SZ];
119 };
120 enum sensors {
121 	SEN_OV2610,
122 	SEN_OV2610AE,
123 	SEN_OV3610,
124 	SEN_OV6620,
125 	SEN_OV6630,
126 	SEN_OV66308AF,
127 	SEN_OV7610,
128 	SEN_OV7620,
129 	SEN_OV7620AE,
130 	SEN_OV7640,
131 	SEN_OV7648,
132 	SEN_OV7660,
133 	SEN_OV7670,
134 	SEN_OV76BE,
135 	SEN_OV8610,
136 	SEN_OV9600,
137 };
138 
139 /* Note this is a bit of a hack, but the w9968cf driver needs the code for all
140    the ov sensors which is already present here. When we have the time we
141    really should move the sensor drivers to v4l2 sub drivers. */
142 #include "w996Xcf.c"
143 
144 /* table of the disabled controls */
145 struct ctrl_valid {
146 	unsigned int has_brightness:1;
147 	unsigned int has_contrast:1;
148 	unsigned int has_exposure:1;
149 	unsigned int has_autogain:1;
150 	unsigned int has_sat:1;
151 	unsigned int has_hvflip:1;
152 	unsigned int has_autobright:1;
153 	unsigned int has_freq:1;
154 };
155 
156 static const struct ctrl_valid valid_controls[] = {
157 	[SEN_OV2610] = {
158 		.has_exposure = 1,
159 		.has_autogain = 1,
160 	},
161 	[SEN_OV2610AE] = {
162 		.has_exposure = 1,
163 		.has_autogain = 1,
164 	},
165 	[SEN_OV3610] = {
166 		/* No controls */
167 	},
168 	[SEN_OV6620] = {
169 		.has_brightness = 1,
170 		.has_contrast = 1,
171 		.has_sat = 1,
172 		.has_autobright = 1,
173 		.has_freq = 1,
174 	},
175 	[SEN_OV6630] = {
176 		.has_brightness = 1,
177 		.has_contrast = 1,
178 		.has_sat = 1,
179 		.has_autobright = 1,
180 		.has_freq = 1,
181 	},
182 	[SEN_OV66308AF] = {
183 		.has_brightness = 1,
184 		.has_contrast = 1,
185 		.has_sat = 1,
186 		.has_autobright = 1,
187 		.has_freq = 1,
188 	},
189 	[SEN_OV7610] = {
190 		.has_brightness = 1,
191 		.has_contrast = 1,
192 		.has_sat = 1,
193 		.has_autobright = 1,
194 		.has_freq = 1,
195 	},
196 	[SEN_OV7620] = {
197 		.has_brightness = 1,
198 		.has_contrast = 1,
199 		.has_sat = 1,
200 		.has_autobright = 1,
201 		.has_freq = 1,
202 	},
203 	[SEN_OV7620AE] = {
204 		.has_brightness = 1,
205 		.has_contrast = 1,
206 		.has_sat = 1,
207 		.has_autobright = 1,
208 		.has_freq = 1,
209 	},
210 	[SEN_OV7640] = {
211 		.has_brightness = 1,
212 		.has_sat = 1,
213 		.has_freq = 1,
214 	},
215 	[SEN_OV7648] = {
216 		.has_brightness = 1,
217 		.has_sat = 1,
218 		.has_freq = 1,
219 	},
220 	[SEN_OV7660] = {
221 		.has_brightness = 1,
222 		.has_contrast = 1,
223 		.has_sat = 1,
224 		.has_hvflip = 1,
225 		.has_freq = 1,
226 	},
227 	[SEN_OV7670] = {
228 		.has_brightness = 1,
229 		.has_contrast = 1,
230 		.has_hvflip = 1,
231 		.has_freq = 1,
232 	},
233 	[SEN_OV76BE] = {
234 		.has_brightness = 1,
235 		.has_contrast = 1,
236 		.has_sat = 1,
237 		.has_autobright = 1,
238 		.has_freq = 1,
239 	},
240 	[SEN_OV8610] = {
241 		.has_brightness = 1,
242 		.has_contrast = 1,
243 		.has_sat = 1,
244 		.has_autobright = 1,
245 	},
246 	[SEN_OV9600] = {
247 		.has_exposure = 1,
248 		.has_autogain = 1,
249 	},
250 };
251 
252 static const struct v4l2_pix_format ov519_vga_mode[] = {
253 	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
254 		.bytesperline = 320,
255 		.sizeimage = 320 * 240 * 3 / 8 + 590,
256 		.colorspace = V4L2_COLORSPACE_JPEG,
257 		.priv = 1},
258 	{640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
259 		.bytesperline = 640,
260 		.sizeimage = 640 * 480 * 3 / 8 + 590,
261 		.colorspace = V4L2_COLORSPACE_JPEG,
262 		.priv = 0},
263 };
264 static const struct v4l2_pix_format ov519_sif_mode[] = {
265 	{160, 120, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
266 		.bytesperline = 160,
267 		.sizeimage = 160 * 120 * 3 / 8 + 590,
268 		.colorspace = V4L2_COLORSPACE_JPEG,
269 		.priv = 3},
270 	{176, 144, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
271 		.bytesperline = 176,
272 		.sizeimage = 176 * 144 * 3 / 8 + 590,
273 		.colorspace = V4L2_COLORSPACE_JPEG,
274 		.priv = 1},
275 	{320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
276 		.bytesperline = 320,
277 		.sizeimage = 320 * 240 * 3 / 8 + 590,
278 		.colorspace = V4L2_COLORSPACE_JPEG,
279 		.priv = 2},
280 	{352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
281 		.bytesperline = 352,
282 		.sizeimage = 352 * 288 * 3 / 8 + 590,
283 		.colorspace = V4L2_COLORSPACE_JPEG,
284 		.priv = 0},
285 };
286 
287 /* Note some of the sizeimage values for the ov511 / ov518 may seem
288    larger then necessary, however they need to be this big as the ov511 /
289    ov518 always fills the entire isoc frame, using 0 padding bytes when
290    it doesn't have any data. So with low framerates the amount of data
291    transferred can become quite large (libv4l will remove all the 0 padding
292    in userspace). */
293 static const struct v4l2_pix_format ov518_vga_mode[] = {
294 	{320, 240, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
295 		.bytesperline = 320,
296 		.sizeimage = 320 * 240 * 3,
297 		.colorspace = V4L2_COLORSPACE_JPEG,
298 		.priv = 1},
299 	{640, 480, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
300 		.bytesperline = 640,
301 		.sizeimage = 640 * 480 * 2,
302 		.colorspace = V4L2_COLORSPACE_JPEG,
303 		.priv = 0},
304 };
305 static const struct v4l2_pix_format ov518_sif_mode[] = {
306 	{160, 120, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
307 		.bytesperline = 160,
308 		.sizeimage = 70000,
309 		.colorspace = V4L2_COLORSPACE_JPEG,
310 		.priv = 3},
311 	{176, 144, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
312 		.bytesperline = 176,
313 		.sizeimage = 70000,
314 		.colorspace = V4L2_COLORSPACE_JPEG,
315 		.priv = 1},
316 	{320, 240, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
317 		.bytesperline = 320,
318 		.sizeimage = 320 * 240 * 3,
319 		.colorspace = V4L2_COLORSPACE_JPEG,
320 		.priv = 2},
321 	{352, 288, V4L2_PIX_FMT_OV518, V4L2_FIELD_NONE,
322 		.bytesperline = 352,
323 		.sizeimage = 352 * 288 * 3,
324 		.colorspace = V4L2_COLORSPACE_JPEG,
325 		.priv = 0},
326 };
327 
328 static const struct v4l2_pix_format ov511_vga_mode[] = {
329 	{320, 240, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
330 		.bytesperline = 320,
331 		.sizeimage = 320 * 240 * 3,
332 		.colorspace = V4L2_COLORSPACE_JPEG,
333 		.priv = 1},
334 	{640, 480, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
335 		.bytesperline = 640,
336 		.sizeimage = 640 * 480 * 2,
337 		.colorspace = V4L2_COLORSPACE_JPEG,
338 		.priv = 0},
339 };
340 static const struct v4l2_pix_format ov511_sif_mode[] = {
341 	{160, 120, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
342 		.bytesperline = 160,
343 		.sizeimage = 70000,
344 		.colorspace = V4L2_COLORSPACE_JPEG,
345 		.priv = 3},
346 	{176, 144, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
347 		.bytesperline = 176,
348 		.sizeimage = 70000,
349 		.colorspace = V4L2_COLORSPACE_JPEG,
350 		.priv = 1},
351 	{320, 240, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
352 		.bytesperline = 320,
353 		.sizeimage = 320 * 240 * 3,
354 		.colorspace = V4L2_COLORSPACE_JPEG,
355 		.priv = 2},
356 	{352, 288, V4L2_PIX_FMT_OV511, V4L2_FIELD_NONE,
357 		.bytesperline = 352,
358 		.sizeimage = 352 * 288 * 3,
359 		.colorspace = V4L2_COLORSPACE_JPEG,
360 		.priv = 0},
361 };
362 
363 static const struct v4l2_pix_format ovfx2_vga_mode[] = {
364 	{320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
365 		.bytesperline = 320,
366 		.sizeimage = 320 * 240,
367 		.colorspace = V4L2_COLORSPACE_SRGB,
368 		.priv = 1},
369 	{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
370 		.bytesperline = 640,
371 		.sizeimage = 640 * 480,
372 		.colorspace = V4L2_COLORSPACE_SRGB,
373 		.priv = 0},
374 };
375 static const struct v4l2_pix_format ovfx2_cif_mode[] = {
376 	{160, 120, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
377 		.bytesperline = 160,
378 		.sizeimage = 160 * 120,
379 		.colorspace = V4L2_COLORSPACE_SRGB,
380 		.priv = 3},
381 	{176, 144, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
382 		.bytesperline = 176,
383 		.sizeimage = 176 * 144,
384 		.colorspace = V4L2_COLORSPACE_SRGB,
385 		.priv = 1},
386 	{320, 240, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
387 		.bytesperline = 320,
388 		.sizeimage = 320 * 240,
389 		.colorspace = V4L2_COLORSPACE_SRGB,
390 		.priv = 2},
391 	{352, 288, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
392 		.bytesperline = 352,
393 		.sizeimage = 352 * 288,
394 		.colorspace = V4L2_COLORSPACE_SRGB,
395 		.priv = 0},
396 };
397 static const struct v4l2_pix_format ovfx2_ov2610_mode[] = {
398 	{800, 600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
399 		.bytesperline = 800,
400 		.sizeimage = 800 * 600,
401 		.colorspace = V4L2_COLORSPACE_SRGB,
402 		.priv = 1},
403 	{1600, 1200, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
404 		.bytesperline = 1600,
405 		.sizeimage = 1600 * 1200,
406 		.colorspace = V4L2_COLORSPACE_SRGB},
407 };
408 static const struct v4l2_pix_format ovfx2_ov3610_mode[] = {
409 	{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
410 		.bytesperline = 640,
411 		.sizeimage = 640 * 480,
412 		.colorspace = V4L2_COLORSPACE_SRGB,
413 		.priv = 1},
414 	{800, 600, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
415 		.bytesperline = 800,
416 		.sizeimage = 800 * 600,
417 		.colorspace = V4L2_COLORSPACE_SRGB,
418 		.priv = 1},
419 	{1024, 768, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
420 		.bytesperline = 1024,
421 		.sizeimage = 1024 * 768,
422 		.colorspace = V4L2_COLORSPACE_SRGB,
423 		.priv = 1},
424 	{1600, 1200, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
425 		.bytesperline = 1600,
426 		.sizeimage = 1600 * 1200,
427 		.colorspace = V4L2_COLORSPACE_SRGB,
428 		.priv = 0},
429 	{2048, 1536, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
430 		.bytesperline = 2048,
431 		.sizeimage = 2048 * 1536,
432 		.colorspace = V4L2_COLORSPACE_SRGB,
433 		.priv = 0},
434 };
435 static const struct v4l2_pix_format ovfx2_ov9600_mode[] = {
436 	{640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
437 		.bytesperline = 640,
438 		.sizeimage = 640 * 480,
439 		.colorspace = V4L2_COLORSPACE_SRGB,
440 		.priv = 1},
441 	{1280, 1024, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE,
442 		.bytesperline = 1280,
443 		.sizeimage = 1280 * 1024,
444 		.colorspace = V4L2_COLORSPACE_SRGB},
445 };
446 
447 /* Registers common to OV511 / OV518 */
448 #define R51x_FIFO_PSIZE			0x30	/* 2 bytes wide w/ OV518(+) */
449 #define R51x_SYS_RESET			0x50
450 	/* Reset type flags */
451 	#define	OV511_RESET_OMNICE	0x08
452 #define R51x_SYS_INIT			0x53
453 #define R51x_SYS_SNAP			0x52
454 #define R51x_SYS_CUST_ID		0x5f
455 #define R51x_COMP_LUT_BEGIN		0x80
456 
457 /* OV511 Camera interface register numbers */
458 #define R511_CAM_DELAY			0x10
459 #define R511_CAM_EDGE			0x11
460 #define R511_CAM_PXCNT			0x12
461 #define R511_CAM_LNCNT			0x13
462 #define R511_CAM_PXDIV			0x14
463 #define R511_CAM_LNDIV			0x15
464 #define R511_CAM_UV_EN			0x16
465 #define R511_CAM_LINE_MODE		0x17
466 #define R511_CAM_OPTS			0x18
467 
468 #define R511_SNAP_FRAME			0x19
469 #define R511_SNAP_PXCNT			0x1a
470 #define R511_SNAP_LNCNT			0x1b
471 #define R511_SNAP_PXDIV			0x1c
472 #define R511_SNAP_LNDIV			0x1d
473 #define R511_SNAP_UV_EN			0x1e
474 #define R511_SNAP_OPTS			0x1f
475 
476 #define R511_DRAM_FLOW_CTL		0x20
477 #define R511_FIFO_OPTS			0x31
478 #define R511_I2C_CTL			0x40
479 #define R511_SYS_LED_CTL		0x55	/* OV511+ only */
480 #define R511_COMP_EN			0x78
481 #define R511_COMP_LUT_EN		0x79
482 
483 /* OV518 Camera interface register numbers */
484 #define R518_GPIO_OUT			0x56	/* OV518(+) only */
485 #define R518_GPIO_CTL			0x57	/* OV518(+) only */
486 
487 /* OV519 Camera interface register numbers */
488 #define OV519_R10_H_SIZE		0x10
489 #define OV519_R11_V_SIZE		0x11
490 #define OV519_R12_X_OFFSETL		0x12
491 #define OV519_R13_X_OFFSETH		0x13
492 #define OV519_R14_Y_OFFSETL		0x14
493 #define OV519_R15_Y_OFFSETH		0x15
494 #define OV519_R16_DIVIDER		0x16
495 #define OV519_R20_DFR			0x20
496 #define OV519_R25_FORMAT		0x25
497 
498 /* OV519 System Controller register numbers */
499 #define OV519_R51_RESET1		0x51
500 #define OV519_R54_EN_CLK1		0x54
501 #define OV519_R57_SNAPSHOT		0x57
502 
503 #define OV519_GPIO_DATA_OUT0		0x71
504 #define OV519_GPIO_IO_CTRL0		0x72
505 
506 /*#define OV511_ENDPOINT_ADDRESS 1	 * Isoc endpoint number */
507 
508 /*
509  * The FX2 chip does not give us a zero length read at end of frame.
510  * It does, however, give a short read at the end of a frame, if
511  * necessary, rather than run two frames together.
512  *
513  * By choosing the right bulk transfer size, we are guaranteed to always
514  * get a short read for the last read of each frame.  Frame sizes are
515  * always a composite number (width * height, or a multiple) so if we
516  * choose a prime number, we are guaranteed that the last read of a
517  * frame will be short.
518  *
519  * But it isn't that easy: the 2.6 kernel requires a multiple of 4KB,
520  * otherwise EOVERFLOW "babbling" errors occur.  I have not been able
521  * to figure out why.  [PMiller]
522  *
523  * The constant (13 * 4096) is the largest "prime enough" number less than 64KB.
524  *
525  * It isn't enough to know the number of bytes per frame, in case we
526  * have data dropouts or buffer overruns (even though the FX2 double
527  * buffers, there are some pretty strict real time constraints for
528  * isochronous transfer for larger frame sizes).
529  */
530 /*jfm: this value does not work for 800x600 - see isoc_init */
531 #define OVFX2_BULK_SIZE (13 * 4096)
532 
533 /* I2C registers */
534 #define R51x_I2C_W_SID		0x41
535 #define R51x_I2C_SADDR_3	0x42
536 #define R51x_I2C_SADDR_2	0x43
537 #define R51x_I2C_R_SID		0x44
538 #define R51x_I2C_DATA		0x45
539 #define R518_I2C_CTL		0x47	/* OV518(+) only */
540 #define OVFX2_I2C_ADDR		0x00
541 
542 /* I2C ADDRESSES */
543 #define OV7xx0_SID   0x42
544 #define OV_HIRES_SID 0x60		/* OV9xxx / OV2xxx / OV3xxx */
545 #define OV8xx0_SID   0xa0
546 #define OV6xx0_SID   0xc0
547 
548 /* OV7610 registers */
549 #define OV7610_REG_GAIN		0x00	/* gain setting (5:0) */
550 #define OV7610_REG_BLUE		0x01	/* blue channel balance */
551 #define OV7610_REG_RED		0x02	/* red channel balance */
552 #define OV7610_REG_SAT		0x03	/* saturation */
553 #define OV8610_REG_HUE		0x04	/* 04 reserved */
554 #define OV7610_REG_CNT		0x05	/* Y contrast */
555 #define OV7610_REG_BRT		0x06	/* Y brightness */
556 #define OV7610_REG_COM_C	0x14	/* misc common regs */
557 #define OV7610_REG_ID_HIGH	0x1c	/* manufacturer ID MSB */
558 #define OV7610_REG_ID_LOW	0x1d	/* manufacturer ID LSB */
559 #define OV7610_REG_COM_I	0x29	/* misc settings */
560 
561 /* OV7660 and OV7670 registers */
562 #define OV7670_R00_GAIN		0x00	/* Gain lower 8 bits (rest in vref) */
563 #define OV7670_R01_BLUE		0x01	/* blue gain */
564 #define OV7670_R02_RED		0x02	/* red gain */
565 #define OV7670_R03_VREF		0x03	/* Pieces of GAIN, VSTART, VSTOP */
566 #define OV7670_R04_COM1		0x04	/* Control 1 */
567 /*#define OV7670_R07_AECHH	0x07	 * AEC MS 5 bits */
568 #define OV7670_R0C_COM3		0x0c	/* Control 3 */
569 #define OV7670_R0D_COM4		0x0d	/* Control 4 */
570 #define OV7670_R0E_COM5		0x0e	/* All "reserved" */
571 #define OV7670_R0F_COM6		0x0f	/* Control 6 */
572 #define OV7670_R10_AECH		0x10	/* More bits of AEC value */
573 #define OV7670_R11_CLKRC	0x11	/* Clock control */
574 #define OV7670_R12_COM7		0x12	/* Control 7 */
575 #define   OV7670_COM7_FMT_VGA	 0x00
576 /*#define   OV7670_COM7_YUV	 0x00	 * YUV */
577 #define   OV7670_COM7_FMT_QVGA	 0x10	/* QVGA format */
578 #define   OV7670_COM7_FMT_MASK	 0x38
579 #define   OV7670_COM7_RESET	 0x80	/* Register reset */
580 #define OV7670_R13_COM8		0x13	/* Control 8 */
581 #define   OV7670_COM8_AEC	 0x01	/* Auto exposure enable */
582 #define   OV7670_COM8_AWB	 0x02	/* White balance enable */
583 #define   OV7670_COM8_AGC	 0x04	/* Auto gain enable */
584 #define   OV7670_COM8_BFILT	 0x20	/* Band filter enable */
585 #define   OV7670_COM8_AECSTEP	 0x40	/* Unlimited AEC step size */
586 #define   OV7670_COM8_FASTAEC	 0x80	/* Enable fast AGC/AEC */
587 #define OV7670_R14_COM9		0x14	/* Control 9 - gain ceiling */
588 #define OV7670_R15_COM10	0x15	/* Control 10 */
589 #define OV7670_R17_HSTART	0x17	/* Horiz start high bits */
590 #define OV7670_R18_HSTOP	0x18	/* Horiz stop high bits */
591 #define OV7670_R19_VSTART	0x19	/* Vert start high bits */
592 #define OV7670_R1A_VSTOP	0x1a	/* Vert stop high bits */
593 #define OV7670_R1E_MVFP		0x1e	/* Mirror / vflip */
594 #define   OV7670_MVFP_VFLIP	 0x10	/* vertical flip */
595 #define   OV7670_MVFP_MIRROR	 0x20	/* Mirror image */
596 #define OV7670_R24_AEW		0x24	/* AGC upper limit */
597 #define OV7670_R25_AEB		0x25	/* AGC lower limit */
598 #define OV7670_R26_VPT		0x26	/* AGC/AEC fast mode op region */
599 #define OV7670_R32_HREF		0x32	/* HREF pieces */
600 #define OV7670_R3A_TSLB		0x3a	/* lots of stuff */
601 #define OV7670_R3B_COM11	0x3b	/* Control 11 */
602 #define   OV7670_COM11_EXP	 0x02
603 #define   OV7670_COM11_HZAUTO	 0x10	/* Auto detect 50/60 Hz */
604 #define OV7670_R3C_COM12	0x3c	/* Control 12 */
605 #define OV7670_R3D_COM13	0x3d	/* Control 13 */
606 #define   OV7670_COM13_GAMMA	 0x80	/* Gamma enable */
607 #define   OV7670_COM13_UVSAT	 0x40	/* UV saturation auto adjustment */
608 #define OV7670_R3E_COM14	0x3e	/* Control 14 */
609 #define OV7670_R3F_EDGE		0x3f	/* Edge enhancement factor */
610 #define OV7670_R40_COM15	0x40	/* Control 15 */
611 /*#define   OV7670_COM15_R00FF	 0xc0	 *	00 to FF */
612 #define OV7670_R41_COM16	0x41	/* Control 16 */
613 #define   OV7670_COM16_AWBGAIN	 0x08	/* AWB gain enable */
614 /* end of ov7660 common registers */
615 #define OV7670_R55_BRIGHT	0x55	/* Brightness */
616 #define OV7670_R56_CONTRAS	0x56	/* Contrast control */
617 #define OV7670_R69_GFIX		0x69	/* Fix gain control */
618 /*#define OV7670_R8C_RGB444	0x8c	 * RGB 444 control */
619 #define OV7670_R9F_HAECC1	0x9f	/* Hist AEC/AGC control 1 */
620 #define OV7670_RA0_HAECC2	0xa0	/* Hist AEC/AGC control 2 */
621 #define OV7670_RA5_BD50MAX	0xa5	/* 50hz banding step limit */
622 #define OV7670_RA6_HAECC3	0xa6	/* Hist AEC/AGC control 3 */
623 #define OV7670_RA7_HAECC4	0xa7	/* Hist AEC/AGC control 4 */
624 #define OV7670_RA8_HAECC5	0xa8	/* Hist AEC/AGC control 5 */
625 #define OV7670_RA9_HAECC6	0xa9	/* Hist AEC/AGC control 6 */
626 #define OV7670_RAA_HAECC7	0xaa	/* Hist AEC/AGC control 7 */
627 #define OV7670_RAB_BD60MAX	0xab	/* 60hz banding step limit */
628 
629 struct ov_regvals {
630 	u8 reg;
631 	u8 val;
632 };
633 struct ov_i2c_regvals {
634 	u8 reg;
635 	u8 val;
636 };
637 
638 /* Settings for OV2610 camera chip */
639 static const struct ov_i2c_regvals norm_2610[] = {
640 	{ 0x12, 0x80 },	/* reset */
641 };
642 
643 static const struct ov_i2c_regvals norm_2610ae[] = {
644 	{0x12, 0x80},	/* reset */
645 	{0x13, 0xcd},
646 	{0x09, 0x01},
647 	{0x0d, 0x00},
648 	{0x11, 0x80},
649 	{0x12, 0x20},	/* 1600x1200 */
650 	{0x33, 0x0c},
651 	{0x35, 0x90},
652 	{0x36, 0x37},
653 /* ms-win traces */
654 	{0x11, 0x83},	/* clock / 3 ? */
655 	{0x2d, 0x00},	/* 60 Hz filter */
656 	{0x24, 0xb0},	/* normal colors */
657 	{0x25, 0x90},
658 	{0x10, 0x43},
659 };
660 
661 static const struct ov_i2c_regvals norm_3620b[] = {
662 	/*
663 	 * From the datasheet: "Note that after writing to register COMH
664 	 * (0x12) to change the sensor mode, registers related to the
665 	 * sensor’s cropping window will be reset back to their default
666 	 * values."
667 	 *
668 	 * "wait 4096 external clock ... to make sure the sensor is
669 	 * stable and ready to access registers" i.e. 160us at 24MHz
670 	 */
671 	{ 0x12, 0x80 }, /* COMH reset */
672 	{ 0x12, 0x00 }, /* QXGA, master */
673 
674 	/*
675 	 * 11 CLKRC "Clock Rate Control"
676 	 * [7] internal frequency doublers: on
677 	 * [6] video port mode: master
678 	 * [5:0] clock divider: 1
679 	 */
680 	{ 0x11, 0x80 },
681 
682 	/*
683 	 * 13 COMI "Common Control I"
684 	 *                  = 192 (0xC0) 11000000
685 	 *    COMI[7] "AEC speed selection"
686 	 *                  =   1 (0x01) 1....... "Faster AEC correction"
687 	 *    COMI[6] "AEC speed step selection"
688 	 *                  =   1 (0x01) .1...... "Big steps, fast"
689 	 *    COMI[5] "Banding filter on off"
690 	 *                  =   0 (0x00) ..0..... "Off"
691 	 *    COMI[4] "Banding filter option"
692 	 *                  =   0 (0x00) ...0.... "Main clock is 48 MHz and
693 	 *                                         the PLL is ON"
694 	 *    COMI[3] "Reserved"
695 	 *                  =   0 (0x00) ....0...
696 	 *    COMI[2] "AGC auto manual control selection"
697 	 *                  =   0 (0x00) .....0.. "Manual"
698 	 *    COMI[1] "AWB auto manual control selection"
699 	 *                  =   0 (0x00) ......0. "Manual"
700 	 *    COMI[0] "Exposure control"
701 	 *                  =   0 (0x00) .......0 "Manual"
702 	 */
703 	{ 0x13, 0xc0 },
704 
705 	/*
706 	 * 09 COMC "Common Control C"
707 	 *                  =   8 (0x08) 00001000
708 	 *    COMC[7:5] "Reserved"
709 	 *                  =   0 (0x00) 000.....
710 	 *    COMC[4] "Sleep Mode Enable"
711 	 *                  =   0 (0x00) ...0.... "Normal mode"
712 	 *    COMC[3:2] "Sensor sampling reset timing selection"
713 	 *                  =   2 (0x02) ....10.. "Longer reset time"
714 	 *    COMC[1:0] "Output drive current select"
715 	 *                  =   0 (0x00) ......00 "Weakest"
716 	 */
717 	{ 0x09, 0x08 },
718 
719 	/*
720 	 * 0C COMD "Common Control D"
721 	 *                  =   8 (0x08) 00001000
722 	 *    COMD[7] "Reserved"
723 	 *                  =   0 (0x00) 0.......
724 	 *    COMD[6] "Swap MSB and LSB at the output port"
725 	 *                  =   0 (0x00) .0...... "False"
726 	 *    COMD[5:3] "Reserved"
727 	 *                  =   1 (0x01) ..001...
728 	 *    COMD[2] "Output Average On Off"
729 	 *                  =   0 (0x00) .....0.. "Output Normal"
730 	 *    COMD[1] "Sensor precharge voltage selection"
731 	 *                  =   0 (0x00) ......0. "Selects internal
732 	 *                                         reference precharge
733 	 *                                         voltage"
734 	 *    COMD[0] "Snapshot option"
735 	 *                  =   0 (0x00) .......0 "Enable live video output
736 	 *                                         after snapshot sequence"
737 	 */
738 	{ 0x0c, 0x08 },
739 
740 	/*
741 	 * 0D COME "Common Control E"
742 	 *                  = 161 (0xA1) 10100001
743 	 *    COME[7] "Output average option"
744 	 *                  =   1 (0x01) 1....... "Output average of 4 pixels"
745 	 *    COME[6] "Anti-blooming control"
746 	 *                  =   0 (0x00) .0...... "Off"
747 	 *    COME[5:3] "Reserved"
748 	 *                  =   4 (0x04) ..100...
749 	 *    COME[2] "Clock output power down pin status"
750 	 *                  =   0 (0x00) .....0.. "Tri-state data output pin
751 	 *                                         on power down"
752 	 *    COME[1] "Data output pin status selection at power down"
753 	 *                  =   0 (0x00) ......0. "Tri-state VSYNC, PCLK,
754 	 *                                         HREF, and CHSYNC pins on
755 	 *                                         power down"
756 	 *    COME[0] "Auto zero circuit select"
757 	 *                  =   1 (0x01) .......1 "On"
758 	 */
759 	{ 0x0d, 0xa1 },
760 
761 	/*
762 	 * 0E COMF "Common Control F"
763 	 *                  = 112 (0x70) 01110000
764 	 *    COMF[7] "System clock selection"
765 	 *                  =   0 (0x00) 0....... "Use 24 MHz system clock"
766 	 *    COMF[6:4] "Reserved"
767 	 *                  =   7 (0x07) .111....
768 	 *    COMF[3] "Manual auto negative offset canceling selection"
769 	 *                  =   0 (0x00) ....0... "Auto detect negative
770 	 *                                         offset and cancel it"
771 	 *    COMF[2:0] "Reserved"
772 	 *                  =   0 (0x00) .....000
773 	 */
774 	{ 0x0e, 0x70 },
775 
776 	/*
777 	 * 0F COMG "Common Control G"
778 	 *                  =  66 (0x42) 01000010
779 	 *    COMG[7] "Optical black output selection"
780 	 *                  =   0 (0x00) 0....... "Disable"
781 	 *    COMG[6] "Black level calibrate selection"
782 	 *                  =   1 (0x01) .1...... "Use optical black pixels
783 	 *                                         to calibrate"
784 	 *    COMG[5:4] "Reserved"
785 	 *                  =   0 (0x00) ..00....
786 	 *    COMG[3] "Channel offset adjustment"
787 	 *                  =   0 (0x00) ....0... "Disable offset adjustment"
788 	 *    COMG[2] "ADC black level calibration option"
789 	 *                  =   0 (0x00) .....0.. "Use B/G line and G/R
790 	 *                                         line to calibrate each
791 	 *                                         channel's black level"
792 	 *    COMG[1] "Reserved"
793 	 *                  =   1 (0x01) ......1.
794 	 *    COMG[0] "ADC black level calibration enable"
795 	 *                  =   0 (0x00) .......0 "Disable"
796 	 */
797 	{ 0x0f, 0x42 },
798 
799 	/*
800 	 * 14 COMJ "Common Control J"
801 	 *                  = 198 (0xC6) 11000110
802 	 *    COMJ[7:6] "AGC gain ceiling"
803 	 *                  =   3 (0x03) 11...... "8x"
804 	 *    COMJ[5:4] "Reserved"
805 	 *                  =   0 (0x00) ..00....
806 	 *    COMJ[3] "Auto banding filter"
807 	 *                  =   0 (0x00) ....0... "Banding filter is always
808 	 *                                         on off depending on
809 	 *                                         COMI[5] setting"
810 	 *    COMJ[2] "VSYNC drop option"
811 	 *                  =   1 (0x01) .....1.. "SYNC is dropped if frame
812 	 *                                         data is dropped"
813 	 *    COMJ[1] "Frame data drop"
814 	 *                  =   1 (0x01) ......1. "Drop frame data if
815 	 *                                         exposure is not within
816 	 *                                         tolerance.  In AEC mode,
817 	 *                                         data is normally dropped
818 	 *                                         when data is out of
819 	 *                                         range."
820 	 *    COMJ[0] "Reserved"
821 	 *                  =   0 (0x00) .......0
822 	 */
823 	{ 0x14, 0xc6 },
824 
825 	/*
826 	 * 15 COMK "Common Control K"
827 	 *                  =   2 (0x02) 00000010
828 	 *    COMK[7] "CHSYNC pin output swap"
829 	 *                  =   0 (0x00) 0....... "CHSYNC"
830 	 *    COMK[6] "HREF pin output swap"
831 	 *                  =   0 (0x00) .0...... "HREF"
832 	 *    COMK[5] "PCLK output selection"
833 	 *                  =   0 (0x00) ..0..... "PCLK always output"
834 	 *    COMK[4] "PCLK edge selection"
835 	 *                  =   0 (0x00) ...0.... "Data valid on falling edge"
836 	 *    COMK[3] "HREF output polarity"
837 	 *                  =   0 (0x00) ....0... "positive"
838 	 *    COMK[2] "Reserved"
839 	 *                  =   0 (0x00) .....0..
840 	 *    COMK[1] "VSYNC polarity"
841 	 *                  =   1 (0x01) ......1. "negative"
842 	 *    COMK[0] "HSYNC polarity"
843 	 *                  =   0 (0x00) .......0 "positive"
844 	 */
845 	{ 0x15, 0x02 },
846 
847 	/*
848 	 * 33 CHLF "Current Control"
849 	 *                  =   9 (0x09) 00001001
850 	 *    CHLF[7:6] "Sensor current control"
851 	 *                  =   0 (0x00) 00......
852 	 *    CHLF[5] "Sensor current range control"
853 	 *                  =   0 (0x00) ..0..... "normal range"
854 	 *    CHLF[4] "Sensor current"
855 	 *                  =   0 (0x00) ...0.... "normal current"
856 	 *    CHLF[3] "Sensor buffer current control"
857 	 *                  =   1 (0x01) ....1... "half current"
858 	 *    CHLF[2] "Column buffer current control"
859 	 *                  =   0 (0x00) .....0.. "normal current"
860 	 *    CHLF[1] "Analog DSP current control"
861 	 *                  =   0 (0x00) ......0. "normal current"
862 	 *    CHLF[1] "ADC current control"
863 	 *                  =   0 (0x00) ......0. "normal current"
864 	 */
865 	{ 0x33, 0x09 },
866 
867 	/*
868 	 * 34 VBLM "Blooming Control"
869 	 *                  =  80 (0x50) 01010000
870 	 *    VBLM[7] "Hard soft reset switch"
871 	 *                  =   0 (0x00) 0....... "Hard reset"
872 	 *    VBLM[6:4] "Blooming voltage selection"
873 	 *                  =   5 (0x05) .101....
874 	 *    VBLM[3:0] "Sensor current control"
875 	 *                  =   0 (0x00) ....0000
876 	 */
877 	{ 0x34, 0x50 },
878 
879 	/*
880 	 * 36 VCHG "Sensor Precharge Voltage Control"
881 	 *                  =   0 (0x00) 00000000
882 	 *    VCHG[7] "Reserved"
883 	 *                  =   0 (0x00) 0.......
884 	 *    VCHG[6:4] "Sensor precharge voltage control"
885 	 *                  =   0 (0x00) .000....
886 	 *    VCHG[3:0] "Sensor array common reference"
887 	 *                  =   0 (0x00) ....0000
888 	 */
889 	{ 0x36, 0x00 },
890 
891 	/*
892 	 * 37 ADC "ADC Reference Control"
893 	 *                  =   4 (0x04) 00000100
894 	 *    ADC[7:4] "Reserved"
895 	 *                  =   0 (0x00) 0000....
896 	 *    ADC[3] "ADC input signal range"
897 	 *                  =   0 (0x00) ....0... "Input signal 1.0x"
898 	 *    ADC[2:0] "ADC range control"
899 	 *                  =   4 (0x04) .....100
900 	 */
901 	{ 0x37, 0x04 },
902 
903 	/*
904 	 * 38 ACOM "Analog Common Ground"
905 	 *                  =  82 (0x52) 01010010
906 	 *    ACOM[7] "Analog gain control"
907 	 *                  =   0 (0x00) 0....... "Gain 1x"
908 	 *    ACOM[6] "Analog black level calibration"
909 	 *                  =   1 (0x01) .1...... "On"
910 	 *    ACOM[5:0] "Reserved"
911 	 *                  =  18 (0x12) ..010010
912 	 */
913 	{ 0x38, 0x52 },
914 
915 	/*
916 	 * 3A FREFA "Internal Reference Adjustment"
917 	 *                  =   0 (0x00) 00000000
918 	 *    FREFA[7:0] "Range"
919 	 *                  =   0 (0x00) 00000000
920 	 */
921 	{ 0x3a, 0x00 },
922 
923 	/*
924 	 * 3C FVOPT "Internal Reference Adjustment"
925 	 *                  =  31 (0x1F) 00011111
926 	 *    FVOPT[7:0] "Range"
927 	 *                  =  31 (0x1F) 00011111
928 	 */
929 	{ 0x3c, 0x1f },
930 
931 	/*
932 	 * 44 Undocumented  =   0 (0x00) 00000000
933 	 *    44[7:0] "It's a secret"
934 	 *                  =   0 (0x00) 00000000
935 	 */
936 	{ 0x44, 0x00 },
937 
938 	/*
939 	 * 40 Undocumented  =   0 (0x00) 00000000
940 	 *    40[7:0] "It's a secret"
941 	 *                  =   0 (0x00) 00000000
942 	 */
943 	{ 0x40, 0x00 },
944 
945 	/*
946 	 * 41 Undocumented  =   0 (0x00) 00000000
947 	 *    41[7:0] "It's a secret"
948 	 *                  =   0 (0x00) 00000000
949 	 */
950 	{ 0x41, 0x00 },
951 
952 	/*
953 	 * 42 Undocumented  =   0 (0x00) 00000000
954 	 *    42[7:0] "It's a secret"
955 	 *                  =   0 (0x00) 00000000
956 	 */
957 	{ 0x42, 0x00 },
958 
959 	/*
960 	 * 43 Undocumented  =   0 (0x00) 00000000
961 	 *    43[7:0] "It's a secret"
962 	 *                  =   0 (0x00) 00000000
963 	 */
964 	{ 0x43, 0x00 },
965 
966 	/*
967 	 * 45 Undocumented  = 128 (0x80) 10000000
968 	 *    45[7:0] "It's a secret"
969 	 *                  = 128 (0x80) 10000000
970 	 */
971 	{ 0x45, 0x80 },
972 
973 	/*
974 	 * 48 Undocumented  = 192 (0xC0) 11000000
975 	 *    48[7:0] "It's a secret"
976 	 *                  = 192 (0xC0) 11000000
977 	 */
978 	{ 0x48, 0xc0 },
979 
980 	/*
981 	 * 49 Undocumented  =  25 (0x19) 00011001
982 	 *    49[7:0] "It's a secret"
983 	 *                  =  25 (0x19) 00011001
984 	 */
985 	{ 0x49, 0x19 },
986 
987 	/*
988 	 * 4B Undocumented  = 128 (0x80) 10000000
989 	 *    4B[7:0] "It's a secret"
990 	 *                  = 128 (0x80) 10000000
991 	 */
992 	{ 0x4b, 0x80 },
993 
994 	/*
995 	 * 4D Undocumented  = 196 (0xC4) 11000100
996 	 *    4D[7:0] "It's a secret"
997 	 *                  = 196 (0xC4) 11000100
998 	 */
999 	{ 0x4d, 0xc4 },
1000 
1001 	/*
1002 	 * 35 VREF "Reference Voltage Control"
1003 	 *                  =  76 (0x4c) 01001100
1004 	 *    VREF[7:5] "Column high reference control"
1005 	 *                  =   2 (0x02) 010..... "higher voltage"
1006 	 *    VREF[4:2] "Column low reference control"
1007 	 *                  =   3 (0x03) ...011.. "Highest voltage"
1008 	 *    VREF[1:0] "Reserved"
1009 	 *                  =   0 (0x00) ......00
1010 	 */
1011 	{ 0x35, 0x4c },
1012 
1013 	/*
1014 	 * 3D Undocumented  =   0 (0x00) 00000000
1015 	 *    3D[7:0] "It's a secret"
1016 	 *                  =   0 (0x00) 00000000
1017 	 */
1018 	{ 0x3d, 0x00 },
1019 
1020 	/*
1021 	 * 3E Undocumented  =   0 (0x00) 00000000
1022 	 *    3E[7:0] "It's a secret"
1023 	 *                  =   0 (0x00) 00000000
1024 	 */
1025 	{ 0x3e, 0x00 },
1026 
1027 	/*
1028 	 * 3B FREFB "Internal Reference Adjustment"
1029 	 *                  =  24 (0x18) 00011000
1030 	 *    FREFB[7:0] "Range"
1031 	 *                  =  24 (0x18) 00011000
1032 	 */
1033 	{ 0x3b, 0x18 },
1034 
1035 	/*
1036 	 * 33 CHLF "Current Control"
1037 	 *                  =  25 (0x19) 00011001
1038 	 *    CHLF[7:6] "Sensor current control"
1039 	 *                  =   0 (0x00) 00......
1040 	 *    CHLF[5] "Sensor current range control"
1041 	 *                  =   0 (0x00) ..0..... "normal range"
1042 	 *    CHLF[4] "Sensor current"
1043 	 *                  =   1 (0x01) ...1.... "double current"
1044 	 *    CHLF[3] "Sensor buffer current control"
1045 	 *                  =   1 (0x01) ....1... "half current"
1046 	 *    CHLF[2] "Column buffer current control"
1047 	 *                  =   0 (0x00) .....0.. "normal current"
1048 	 *    CHLF[1] "Analog DSP current control"
1049 	 *                  =   0 (0x00) ......0. "normal current"
1050 	 *    CHLF[1] "ADC current control"
1051 	 *                  =   0 (0x00) ......0. "normal current"
1052 	 */
1053 	{ 0x33, 0x19 },
1054 
1055 	/*
1056 	 * 34 VBLM "Blooming Control"
1057 	 *                  =  90 (0x5A) 01011010
1058 	 *    VBLM[7] "Hard soft reset switch"
1059 	 *                  =   0 (0x00) 0....... "Hard reset"
1060 	 *    VBLM[6:4] "Blooming voltage selection"
1061 	 *                  =   5 (0x05) .101....
1062 	 *    VBLM[3:0] "Sensor current control"
1063 	 *                  =  10 (0x0A) ....1010
1064 	 */
1065 	{ 0x34, 0x5a },
1066 
1067 	/*
1068 	 * 3B FREFB "Internal Reference Adjustment"
1069 	 *                  =   0 (0x00) 00000000
1070 	 *    FREFB[7:0] "Range"
1071 	 *                  =   0 (0x00) 00000000
1072 	 */
1073 	{ 0x3b, 0x00 },
1074 
1075 	/*
1076 	 * 33 CHLF "Current Control"
1077 	 *                  =   9 (0x09) 00001001
1078 	 *    CHLF[7:6] "Sensor current control"
1079 	 *                  =   0 (0x00) 00......
1080 	 *    CHLF[5] "Sensor current range control"
1081 	 *                  =   0 (0x00) ..0..... "normal range"
1082 	 *    CHLF[4] "Sensor current"
1083 	 *                  =   0 (0x00) ...0.... "normal current"
1084 	 *    CHLF[3] "Sensor buffer current control"
1085 	 *                  =   1 (0x01) ....1... "half current"
1086 	 *    CHLF[2] "Column buffer current control"
1087 	 *                  =   0 (0x00) .....0.. "normal current"
1088 	 *    CHLF[1] "Analog DSP current control"
1089 	 *                  =   0 (0x00) ......0. "normal current"
1090 	 *    CHLF[1] "ADC current control"
1091 	 *                  =   0 (0x00) ......0. "normal current"
1092 	 */
1093 	{ 0x33, 0x09 },
1094 
1095 	/*
1096 	 * 34 VBLM "Blooming Control"
1097 	 *                  =  80 (0x50) 01010000
1098 	 *    VBLM[7] "Hard soft reset switch"
1099 	 *                  =   0 (0x00) 0....... "Hard reset"
1100 	 *    VBLM[6:4] "Blooming voltage selection"
1101 	 *                  =   5 (0x05) .101....
1102 	 *    VBLM[3:0] "Sensor current control"
1103 	 *                  =   0 (0x00) ....0000
1104 	 */
1105 	{ 0x34, 0x50 },
1106 
1107 	/*
1108 	 * 12 COMH "Common Control H"
1109 	 *                  =  64 (0x40) 01000000
1110 	 *    COMH[7] "SRST"
1111 	 *                  =   0 (0x00) 0....... "No-op"
1112 	 *    COMH[6:4] "Resolution selection"
1113 	 *                  =   4 (0x04) .100.... "XGA"
1114 	 *    COMH[3] "Master slave selection"
1115 	 *                  =   0 (0x00) ....0... "Master mode"
1116 	 *    COMH[2] "Internal B/R channel option"
1117 	 *                  =   0 (0x00) .....0.. "B/R use same channel"
1118 	 *    COMH[1] "Color bar test pattern"
1119 	 *                  =   0 (0x00) ......0. "Off"
1120 	 *    COMH[0] "Reserved"
1121 	 *                  =   0 (0x00) .......0
1122 	 */
1123 	{ 0x12, 0x40 },
1124 
1125 	/*
1126 	 * 17 HREFST "Horizontal window start"
1127 	 *                  =  31 (0x1F) 00011111
1128 	 *    HREFST[7:0] "Horizontal window start, 8 MSBs"
1129 	 *                  =  31 (0x1F) 00011111
1130 	 */
1131 	{ 0x17, 0x1f },
1132 
1133 	/*
1134 	 * 18 HREFEND "Horizontal window end"
1135 	 *                  =  95 (0x5F) 01011111
1136 	 *    HREFEND[7:0] "Horizontal Window End, 8 MSBs"
1137 	 *                  =  95 (0x5F) 01011111
1138 	 */
1139 	{ 0x18, 0x5f },
1140 
1141 	/*
1142 	 * 19 VSTRT "Vertical window start"
1143 	 *                  =   0 (0x00) 00000000
1144 	 *    VSTRT[7:0] "Vertical Window Start, 8 MSBs"
1145 	 *                  =   0 (0x00) 00000000
1146 	 */
1147 	{ 0x19, 0x00 },
1148 
1149 	/*
1150 	 * 1A VEND "Vertical window end"
1151 	 *                  =  96 (0x60) 01100000
1152 	 *    VEND[7:0] "Vertical Window End, 8 MSBs"
1153 	 *                  =  96 (0x60) 01100000
1154 	 */
1155 	{ 0x1a, 0x60 },
1156 
1157 	/*
1158 	 * 32 COMM "Common Control M"
1159 	 *                  =  18 (0x12) 00010010
1160 	 *    COMM[7:6] "Pixel clock divide option"
1161 	 *                  =   0 (0x00) 00...... "/1"
1162 	 *    COMM[5:3] "Horizontal window end position, 3 LSBs"
1163 	 *                  =   2 (0x02) ..010...
1164 	 *    COMM[2:0] "Horizontal window start position, 3 LSBs"
1165 	 *                  =   2 (0x02) .....010
1166 	 */
1167 	{ 0x32, 0x12 },
1168 
1169 	/*
1170 	 * 03 COMA "Common Control A"
1171 	 *                  =  74 (0x4A) 01001010
1172 	 *    COMA[7:4] "AWB Update Threshold"
1173 	 *                  =   4 (0x04) 0100....
1174 	 *    COMA[3:2] "Vertical window end line control 2 LSBs"
1175 	 *                  =   2 (0x02) ....10..
1176 	 *    COMA[1:0] "Vertical window start line control 2 LSBs"
1177 	 *                  =   2 (0x02) ......10
1178 	 */
1179 	{ 0x03, 0x4a },
1180 
1181 	/*
1182 	 * 11 CLKRC "Clock Rate Control"
1183 	 *                  = 128 (0x80) 10000000
1184 	 *    CLKRC[7] "Internal frequency doublers on off seclection"
1185 	 *                  =   1 (0x01) 1....... "On"
1186 	 *    CLKRC[6] "Digital video master slave selection"
1187 	 *                  =   0 (0x00) .0...... "Master mode, sensor
1188 	 *                                         provides PCLK"
1189 	 *    CLKRC[5:0] "Clock divider { CLK = PCLK/(1+CLKRC[5:0]) }"
1190 	 *                  =   0 (0x00) ..000000
1191 	 */
1192 	{ 0x11, 0x80 },
1193 
1194 	/*
1195 	 * 12 COMH "Common Control H"
1196 	 *                  =   0 (0x00) 00000000
1197 	 *    COMH[7] "SRST"
1198 	 *                  =   0 (0x00) 0....... "No-op"
1199 	 *    COMH[6:4] "Resolution selection"
1200 	 *                  =   0 (0x00) .000.... "QXGA"
1201 	 *    COMH[3] "Master slave selection"
1202 	 *                  =   0 (0x00) ....0... "Master mode"
1203 	 *    COMH[2] "Internal B/R channel option"
1204 	 *                  =   0 (0x00) .....0.. "B/R use same channel"
1205 	 *    COMH[1] "Color bar test pattern"
1206 	 *                  =   0 (0x00) ......0. "Off"
1207 	 *    COMH[0] "Reserved"
1208 	 *                  =   0 (0x00) .......0
1209 	 */
1210 	{ 0x12, 0x00 },
1211 
1212 	/*
1213 	 * 12 COMH "Common Control H"
1214 	 *                  =  64 (0x40) 01000000
1215 	 *    COMH[7] "SRST"
1216 	 *                  =   0 (0x00) 0....... "No-op"
1217 	 *    COMH[6:4] "Resolution selection"
1218 	 *                  =   4 (0x04) .100.... "XGA"
1219 	 *    COMH[3] "Master slave selection"
1220 	 *                  =   0 (0x00) ....0... "Master mode"
1221 	 *    COMH[2] "Internal B/R channel option"
1222 	 *                  =   0 (0x00) .....0.. "B/R use same channel"
1223 	 *    COMH[1] "Color bar test pattern"
1224 	 *                  =   0 (0x00) ......0. "Off"
1225 	 *    COMH[0] "Reserved"
1226 	 *                  =   0 (0x00) .......0
1227 	 */
1228 	{ 0x12, 0x40 },
1229 
1230 	/*
1231 	 * 17 HREFST "Horizontal window start"
1232 	 *                  =  31 (0x1F) 00011111
1233 	 *    HREFST[7:0] "Horizontal window start, 8 MSBs"
1234 	 *                  =  31 (0x1F) 00011111
1235 	 */
1236 	{ 0x17, 0x1f },
1237 
1238 	/*
1239 	 * 18 HREFEND "Horizontal window end"
1240 	 *                  =  95 (0x5F) 01011111
1241 	 *    HREFEND[7:0] "Horizontal Window End, 8 MSBs"
1242 	 *                  =  95 (0x5F) 01011111
1243 	 */
1244 	{ 0x18, 0x5f },
1245 
1246 	/*
1247 	 * 19 VSTRT "Vertical window start"
1248 	 *                  =   0 (0x00) 00000000
1249 	 *    VSTRT[7:0] "Vertical Window Start, 8 MSBs"
1250 	 *                  =   0 (0x00) 00000000
1251 	 */
1252 	{ 0x19, 0x00 },
1253 
1254 	/*
1255 	 * 1A VEND "Vertical window end"
1256 	 *                  =  96 (0x60) 01100000
1257 	 *    VEND[7:0] "Vertical Window End, 8 MSBs"
1258 	 *                  =  96 (0x60) 01100000
1259 	 */
1260 	{ 0x1a, 0x60 },
1261 
1262 	/*
1263 	 * 32 COMM "Common Control M"
1264 	 *                  =  18 (0x12) 00010010
1265 	 *    COMM[7:6] "Pixel clock divide option"
1266 	 *                  =   0 (0x00) 00...... "/1"
1267 	 *    COMM[5:3] "Horizontal window end position, 3 LSBs"
1268 	 *                  =   2 (0x02) ..010...
1269 	 *    COMM[2:0] "Horizontal window start position, 3 LSBs"
1270 	 *                  =   2 (0x02) .....010
1271 	 */
1272 	{ 0x32, 0x12 },
1273 
1274 	/*
1275 	 * 03 COMA "Common Control A"
1276 	 *                  =  74 (0x4A) 01001010
1277 	 *    COMA[7:4] "AWB Update Threshold"
1278 	 *                  =   4 (0x04) 0100....
1279 	 *    COMA[3:2] "Vertical window end line control 2 LSBs"
1280 	 *                  =   2 (0x02) ....10..
1281 	 *    COMA[1:0] "Vertical window start line control 2 LSBs"
1282 	 *                  =   2 (0x02) ......10
1283 	 */
1284 	{ 0x03, 0x4a },
1285 
1286 	/*
1287 	 * 02 RED "Red Gain Control"
1288 	 *                  = 175 (0xAF) 10101111
1289 	 *    RED[7] "Action"
1290 	 *                  =   1 (0x01) 1....... "gain = 1/(1+bitrev([6:0]))"
1291 	 *    RED[6:0] "Value"
1292 	 *                  =  47 (0x2F) .0101111
1293 	 */
1294 	{ 0x02, 0xaf },
1295 
1296 	/*
1297 	 * 2D ADDVSL "VSYNC Pulse Width"
1298 	 *                  = 210 (0xD2) 11010010
1299 	 *    ADDVSL[7:0] "VSYNC pulse width, LSB"
1300 	 *                  = 210 (0xD2) 11010010
1301 	 */
1302 	{ 0x2d, 0xd2 },
1303 
1304 	/*
1305 	 * 00 GAIN          =  24 (0x18) 00011000
1306 	 *    GAIN[7:6] "Reserved"
1307 	 *                  =   0 (0x00) 00......
1308 	 *    GAIN[5] "Double"
1309 	 *                  =   0 (0x00) ..0..... "False"
1310 	 *    GAIN[4] "Double"
1311 	 *                  =   1 (0x01) ...1.... "True"
1312 	 *    GAIN[3:0] "Range"
1313 	 *                  =   8 (0x08) ....1000
1314 	 */
1315 	{ 0x00, 0x18 },
1316 
1317 	/*
1318 	 * 01 BLUE "Blue Gain Control"
1319 	 *                  = 240 (0xF0) 11110000
1320 	 *    BLUE[7] "Action"
1321 	 *                  =   1 (0x01) 1....... "gain = 1/(1+bitrev([6:0]))"
1322 	 *    BLUE[6:0] "Value"
1323 	 *                  = 112 (0x70) .1110000
1324 	 */
1325 	{ 0x01, 0xf0 },
1326 
1327 	/*
1328 	 * 10 AEC "Automatic Exposure Control"
1329 	 *                  =  10 (0x0A) 00001010
1330 	 *    AEC[7:0] "Automatic Exposure Control, 8 MSBs"
1331 	 *                  =  10 (0x0A) 00001010
1332 	 */
1333 	{ 0x10, 0x0a },
1334 
1335 	{ 0xe1, 0x67 },
1336 	{ 0xe3, 0x03 },
1337 	{ 0xe4, 0x26 },
1338 	{ 0xe5, 0x3e },
1339 	{ 0xf8, 0x01 },
1340 	{ 0xff, 0x01 },
1341 };
1342 
1343 static const struct ov_i2c_regvals norm_6x20[] = {
1344 	{ 0x12, 0x80 }, /* reset */
1345 	{ 0x11, 0x01 },
1346 	{ 0x03, 0x60 },
1347 	{ 0x05, 0x7f }, /* For when autoadjust is off */
1348 	{ 0x07, 0xa8 },
1349 	/* The ratio of 0x0c and 0x0d controls the white point */
1350 	{ 0x0c, 0x24 },
1351 	{ 0x0d, 0x24 },
1352 	{ 0x0f, 0x15 }, /* COMS */
1353 	{ 0x10, 0x75 }, /* AEC Exposure time */
1354 	{ 0x12, 0x24 }, /* Enable AGC */
1355 	{ 0x14, 0x04 },
1356 	/* 0x16: 0x06 helps frame stability with moving objects */
1357 	{ 0x16, 0x06 },
1358 /*	{ 0x20, 0x30 },  * Aperture correction enable */
1359 	{ 0x26, 0xb2 }, /* BLC enable */
1360 	/* 0x28: 0x05 Selects RGB format if RGB on */
1361 	{ 0x28, 0x05 },
1362 	{ 0x2a, 0x04 }, /* Disable framerate adjust */
1363 /*	{ 0x2b, 0xac },  * Framerate; Set 2a[7] first */
1364 	{ 0x2d, 0x85 },
1365 	{ 0x33, 0xa0 }, /* Color Processing Parameter */
1366 	{ 0x34, 0xd2 }, /* Max A/D range */
1367 	{ 0x38, 0x8b },
1368 	{ 0x39, 0x40 },
1369 
1370 	{ 0x3c, 0x39 }, /* Enable AEC mode changing */
1371 	{ 0x3c, 0x3c }, /* Change AEC mode */
1372 	{ 0x3c, 0x24 }, /* Disable AEC mode changing */
1373 
1374 	{ 0x3d, 0x80 },
1375 	/* These next two registers (0x4a, 0x4b) are undocumented.
1376 	 * They control the color balance */
1377 	{ 0x4a, 0x80 },
1378 	{ 0x4b, 0x80 },
1379 	{ 0x4d, 0xd2 }, /* This reduces noise a bit */
1380 	{ 0x4e, 0xc1 },
1381 	{ 0x4f, 0x04 },
1382 /* Do 50-53 have any effect? */
1383 /* Toggle 0x12[2] off and on here? */
1384 };
1385 
1386 static const struct ov_i2c_regvals norm_6x30[] = {
1387 	{ 0x12, 0x80 }, /* Reset */
1388 	{ 0x00, 0x1f }, /* Gain */
1389 	{ 0x01, 0x99 }, /* Blue gain */
1390 	{ 0x02, 0x7c }, /* Red gain */
1391 	{ 0x03, 0xc0 }, /* Saturation */
1392 	{ 0x05, 0x0a }, /* Contrast */
1393 	{ 0x06, 0x95 }, /* Brightness */
1394 	{ 0x07, 0x2d }, /* Sharpness */
1395 	{ 0x0c, 0x20 },
1396 	{ 0x0d, 0x20 },
1397 	{ 0x0e, 0xa0 }, /* Was 0x20, bit7 enables a 2x gain which we need */
1398 	{ 0x0f, 0x05 },
1399 	{ 0x10, 0x9a },
1400 	{ 0x11, 0x00 }, /* Pixel clock = fastest */
1401 	{ 0x12, 0x24 }, /* Enable AGC and AWB */
1402 	{ 0x13, 0x21 },
1403 	{ 0x14, 0x80 },
1404 	{ 0x15, 0x01 },
1405 	{ 0x16, 0x03 },
1406 	{ 0x17, 0x38 },
1407 	{ 0x18, 0xea },
1408 	{ 0x19, 0x04 },
1409 	{ 0x1a, 0x93 },
1410 	{ 0x1b, 0x00 },
1411 	{ 0x1e, 0xc4 },
1412 	{ 0x1f, 0x04 },
1413 	{ 0x20, 0x20 },
1414 	{ 0x21, 0x10 },
1415 	{ 0x22, 0x88 },
1416 	{ 0x23, 0xc0 }, /* Crystal circuit power level */
1417 	{ 0x25, 0x9a }, /* Increase AEC black ratio */
1418 	{ 0x26, 0xb2 }, /* BLC enable */
1419 	{ 0x27, 0xa2 },
1420 	{ 0x28, 0x00 },
1421 	{ 0x29, 0x00 },
1422 	{ 0x2a, 0x84 }, /* 60 Hz power */
1423 	{ 0x2b, 0xa8 }, /* 60 Hz power */
1424 	{ 0x2c, 0xa0 },
1425 	{ 0x2d, 0x95 }, /* Enable auto-brightness */
1426 	{ 0x2e, 0x88 },
1427 	{ 0x33, 0x26 },
1428 	{ 0x34, 0x03 },
1429 	{ 0x36, 0x8f },
1430 	{ 0x37, 0x80 },
1431 	{ 0x38, 0x83 },
1432 	{ 0x39, 0x80 },
1433 	{ 0x3a, 0x0f },
1434 	{ 0x3b, 0x3c },
1435 	{ 0x3c, 0x1a },
1436 	{ 0x3d, 0x80 },
1437 	{ 0x3e, 0x80 },
1438 	{ 0x3f, 0x0e },
1439 	{ 0x40, 0x00 }, /* White bal */
1440 	{ 0x41, 0x00 }, /* White bal */
1441 	{ 0x42, 0x80 },
1442 	{ 0x43, 0x3f }, /* White bal */
1443 	{ 0x44, 0x80 },
1444 	{ 0x45, 0x20 },
1445 	{ 0x46, 0x20 },
1446 	{ 0x47, 0x80 },
1447 	{ 0x48, 0x7f },
1448 	{ 0x49, 0x00 },
1449 	{ 0x4a, 0x00 },
1450 	{ 0x4b, 0x80 },
1451 	{ 0x4c, 0xd0 },
1452 	{ 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */
1453 	{ 0x4e, 0x40 },
1454 	{ 0x4f, 0x07 }, /* UV avg., col. killer: max */
1455 	{ 0x50, 0xff },
1456 	{ 0x54, 0x23 }, /* Max AGC gain: 18dB */
1457 	{ 0x55, 0xff },
1458 	{ 0x56, 0x12 },
1459 	{ 0x57, 0x81 },
1460 	{ 0x58, 0x75 },
1461 	{ 0x59, 0x01 }, /* AGC dark current comp.: +1 */
1462 	{ 0x5a, 0x2c },
1463 	{ 0x5b, 0x0f }, /* AWB chrominance levels */
1464 	{ 0x5c, 0x10 },
1465 	{ 0x3d, 0x80 },
1466 	{ 0x27, 0xa6 },
1467 	{ 0x12, 0x20 }, /* Toggle AWB */
1468 	{ 0x12, 0x24 },
1469 };
1470 
1471 /* Lawrence Glaister <lg@jfm.bc.ca> reports:
1472  *
1473  * Register 0x0f in the 7610 has the following effects:
1474  *
1475  * 0x85 (AEC method 1): Best overall, good contrast range
1476  * 0x45 (AEC method 2): Very overexposed
1477  * 0xa5 (spec sheet default): Ok, but the black level is
1478  *	shifted resulting in loss of contrast
1479  * 0x05 (old driver setting): very overexposed, too much
1480  *	contrast
1481  */
1482 static const struct ov_i2c_regvals norm_7610[] = {
1483 	{ 0x10, 0xff },
1484 	{ 0x16, 0x06 },
1485 	{ 0x28, 0x24 },
1486 	{ 0x2b, 0xac },
1487 	{ 0x12, 0x00 },
1488 	{ 0x38, 0x81 },
1489 	{ 0x28, 0x24 },	/* 0c */
1490 	{ 0x0f, 0x85 },	/* lg's setting */
1491 	{ 0x15, 0x01 },
1492 	{ 0x20, 0x1c },
1493 	{ 0x23, 0x2a },
1494 	{ 0x24, 0x10 },
1495 	{ 0x25, 0x8a },
1496 	{ 0x26, 0xa2 },
1497 	{ 0x27, 0xc2 },
1498 	{ 0x2a, 0x04 },
1499 	{ 0x2c, 0xfe },
1500 	{ 0x2d, 0x93 },
1501 	{ 0x30, 0x71 },
1502 	{ 0x31, 0x60 },
1503 	{ 0x32, 0x26 },
1504 	{ 0x33, 0x20 },
1505 	{ 0x34, 0x48 },
1506 	{ 0x12, 0x24 },
1507 	{ 0x11, 0x01 },
1508 	{ 0x0c, 0x24 },
1509 	{ 0x0d, 0x24 },
1510 };
1511 
1512 static const struct ov_i2c_regvals norm_7620[] = {
1513 	{ 0x12, 0x80 },		/* reset */
1514 	{ 0x00, 0x00 },		/* gain */
1515 	{ 0x01, 0x80 },		/* blue gain */
1516 	{ 0x02, 0x80 },		/* red gain */
1517 	{ 0x03, 0xc0 },		/* OV7670_R03_VREF */
1518 	{ 0x06, 0x60 },
1519 	{ 0x07, 0x00 },
1520 	{ 0x0c, 0x24 },
1521 	{ 0x0c, 0x24 },
1522 	{ 0x0d, 0x24 },
1523 	{ 0x11, 0x01 },
1524 	{ 0x12, 0x24 },
1525 	{ 0x13, 0x01 },
1526 	{ 0x14, 0x84 },
1527 	{ 0x15, 0x01 },
1528 	{ 0x16, 0x03 },
1529 	{ 0x17, 0x2f },
1530 	{ 0x18, 0xcf },
1531 	{ 0x19, 0x06 },
1532 	{ 0x1a, 0xf5 },
1533 	{ 0x1b, 0x00 },
1534 	{ 0x20, 0x18 },
1535 	{ 0x21, 0x80 },
1536 	{ 0x22, 0x80 },
1537 	{ 0x23, 0x00 },
1538 	{ 0x26, 0xa2 },
1539 	{ 0x27, 0xea },
1540 	{ 0x28, 0x22 }, /* Was 0x20, bit1 enables a 2x gain which we need */
1541 	{ 0x29, 0x00 },
1542 	{ 0x2a, 0x10 },
1543 	{ 0x2b, 0x00 },
1544 	{ 0x2c, 0x88 },
1545 	{ 0x2d, 0x91 },
1546 	{ 0x2e, 0x80 },
1547 	{ 0x2f, 0x44 },
1548 	{ 0x60, 0x27 },
1549 	{ 0x61, 0x02 },
1550 	{ 0x62, 0x5f },
1551 	{ 0x63, 0xd5 },
1552 	{ 0x64, 0x57 },
1553 	{ 0x65, 0x83 },
1554 	{ 0x66, 0x55 },
1555 	{ 0x67, 0x92 },
1556 	{ 0x68, 0xcf },
1557 	{ 0x69, 0x76 },
1558 	{ 0x6a, 0x22 },
1559 	{ 0x6b, 0x00 },
1560 	{ 0x6c, 0x02 },
1561 	{ 0x6d, 0x44 },
1562 	{ 0x6e, 0x80 },
1563 	{ 0x6f, 0x1d },
1564 	{ 0x70, 0x8b },
1565 	{ 0x71, 0x00 },
1566 	{ 0x72, 0x14 },
1567 	{ 0x73, 0x54 },
1568 	{ 0x74, 0x00 },
1569 	{ 0x75, 0x8e },
1570 	{ 0x76, 0x00 },
1571 	{ 0x77, 0xff },
1572 	{ 0x78, 0x80 },
1573 	{ 0x79, 0x80 },
1574 	{ 0x7a, 0x80 },
1575 	{ 0x7b, 0xe2 },
1576 	{ 0x7c, 0x00 },
1577 };
1578 
1579 /* 7640 and 7648. The defaults should be OK for most registers. */
1580 static const struct ov_i2c_regvals norm_7640[] = {
1581 	{ 0x12, 0x80 },
1582 	{ 0x12, 0x14 },
1583 };
1584 
1585 static const struct ov_regvals init_519_ov7660[] = {
1586 	{ 0x5d,	0x03 }, /* Turn off suspend mode */
1587 	{ 0x53,	0x9b }, /* 0x9f enables the (unused) microcontroller */
1588 	{ 0x54,	0x0f }, /* bit2 (jpeg enable) */
1589 	{ 0xa2,	0x20 }, /* a2-a5 are undocumented */
1590 	{ 0xa3,	0x18 },
1591 	{ 0xa4,	0x04 },
1592 	{ 0xa5,	0x28 },
1593 	{ 0x37,	0x00 },	/* SetUsbInit */
1594 	{ 0x55,	0x02 }, /* 4.096 Mhz audio clock */
1595 	/* Enable both fields, YUV Input, disable defect comp (why?) */
1596 	{ 0x20,	0x0c },	/* 0x0d does U <-> V swap */
1597 	{ 0x21,	0x38 },
1598 	{ 0x22,	0x1d },
1599 	{ 0x17,	0x50 }, /* undocumented */
1600 	{ 0x37,	0x00 }, /* undocumented */
1601 	{ 0x40,	0xff }, /* I2C timeout counter */
1602 	{ 0x46,	0x00 }, /* I2C clock prescaler */
1603 };
1604 static const struct ov_i2c_regvals norm_7660[] = {
1605 	{OV7670_R12_COM7, OV7670_COM7_RESET},
1606 	{OV7670_R11_CLKRC, 0x81},
1607 	{0x92, 0x00},			/* DM_LNL */
1608 	{0x93, 0x00},			/* DM_LNH */
1609 	{0x9d, 0x4c},			/* BD50ST */
1610 	{0x9e, 0x3f},			/* BD60ST */
1611 	{OV7670_R3B_COM11, 0x02},
1612 	{OV7670_R13_COM8, 0xf5},
1613 	{OV7670_R10_AECH, 0x00},
1614 	{OV7670_R00_GAIN, 0x00},
1615 	{OV7670_R01_BLUE, 0x7c},
1616 	{OV7670_R02_RED, 0x9d},
1617 	{OV7670_R12_COM7, 0x00},
1618 	{OV7670_R04_COM1, 00},
1619 	{OV7670_R18_HSTOP, 0x01},
1620 	{OV7670_R17_HSTART, 0x13},
1621 	{OV7670_R32_HREF, 0x92},
1622 	{OV7670_R19_VSTART, 0x02},
1623 	{OV7670_R1A_VSTOP, 0x7a},
1624 	{OV7670_R03_VREF, 0x00},
1625 	{OV7670_R0E_COM5, 0x04},
1626 	{OV7670_R0F_COM6, 0x62},
1627 	{OV7670_R15_COM10, 0x00},
1628 	{0x16, 0x02},			/* RSVD */
1629 	{0x1b, 0x00},			/* PSHFT */
1630 	{OV7670_R1E_MVFP, 0x01},
1631 	{0x29, 0x3c},			/* RSVD */
1632 	{0x33, 0x00},			/* CHLF */
1633 	{0x34, 0x07},			/* ARBLM */
1634 	{0x35, 0x84},			/* RSVD */
1635 	{0x36, 0x00},			/* RSVD */
1636 	{0x37, 0x04},			/* ADC */
1637 	{0x39, 0x43},			/* OFON */
1638 	{OV7670_R3A_TSLB, 0x00},
1639 	{OV7670_R3C_COM12, 0x6c},
1640 	{OV7670_R3D_COM13, 0x98},
1641 	{OV7670_R3F_EDGE, 0x23},
1642 	{OV7670_R40_COM15, 0xc1},
1643 	{OV7670_R41_COM16, 0x22},
1644 	{0x6b, 0x0a},			/* DBLV */
1645 	{0xa1, 0x08},			/* RSVD */
1646 	{0x69, 0x80},			/* HV */
1647 	{0x43, 0xf0},			/* RSVD.. */
1648 	{0x44, 0x10},
1649 	{0x45, 0x78},
1650 	{0x46, 0xa8},
1651 	{0x47, 0x60},
1652 	{0x48, 0x80},
1653 	{0x59, 0xba},
1654 	{0x5a, 0x9a},
1655 	{0x5b, 0x22},
1656 	{0x5c, 0xb9},
1657 	{0x5d, 0x9b},
1658 	{0x5e, 0x10},
1659 	{0x5f, 0xe0},
1660 	{0x60, 0x85},
1661 	{0x61, 0x60},
1662 	{0x9f, 0x9d},			/* RSVD */
1663 	{0xa0, 0xa0},			/* DSPC2 */
1664 	{0x4f, 0x60},			/* matrix */
1665 	{0x50, 0x64},
1666 	{0x51, 0x04},
1667 	{0x52, 0x18},
1668 	{0x53, 0x3c},
1669 	{0x54, 0x54},
1670 	{0x55, 0x40},
1671 	{0x56, 0x40},
1672 	{0x57, 0x40},
1673 	{0x58, 0x0d},			/* matrix sign */
1674 	{0x8b, 0xcc},			/* RSVD */
1675 	{0x8c, 0xcc},
1676 	{0x8d, 0xcf},
1677 	{0x6c, 0x40},			/* gamma curve */
1678 	{0x6d, 0xe0},
1679 	{0x6e, 0xa0},
1680 	{0x6f, 0x80},
1681 	{0x70, 0x70},
1682 	{0x71, 0x80},
1683 	{0x72, 0x60},
1684 	{0x73, 0x60},
1685 	{0x74, 0x50},
1686 	{0x75, 0x40},
1687 	{0x76, 0x38},
1688 	{0x77, 0x3c},
1689 	{0x78, 0x32},
1690 	{0x79, 0x1a},
1691 	{0x7a, 0x28},
1692 	{0x7b, 0x24},
1693 	{0x7c, 0x04},			/* gamma curve */
1694 	{0x7d, 0x12},
1695 	{0x7e, 0x26},
1696 	{0x7f, 0x46},
1697 	{0x80, 0x54},
1698 	{0x81, 0x64},
1699 	{0x82, 0x70},
1700 	{0x83, 0x7c},
1701 	{0x84, 0x86},
1702 	{0x85, 0x8e},
1703 	{0x86, 0x9c},
1704 	{0x87, 0xab},
1705 	{0x88, 0xc4},
1706 	{0x89, 0xd1},
1707 	{0x8a, 0xe5},
1708 	{OV7670_R14_COM9, 0x1e},
1709 	{OV7670_R24_AEW, 0x80},
1710 	{OV7670_R25_AEB, 0x72},
1711 	{OV7670_R26_VPT, 0xb3},
1712 	{0x62, 0x80},			/* LCC1 */
1713 	{0x63, 0x80},			/* LCC2 */
1714 	{0x64, 0x06},			/* LCC3 */
1715 	{0x65, 0x00},			/* LCC4 */
1716 	{0x66, 0x01},			/* LCC5 */
1717 	{0x94, 0x0e},			/* RSVD.. */
1718 	{0x95, 0x14},
1719 	{OV7670_R13_COM8, OV7670_COM8_FASTAEC
1720 			| OV7670_COM8_AECSTEP
1721 			| OV7670_COM8_BFILT
1722 			| 0x10
1723 			| OV7670_COM8_AGC
1724 			| OV7670_COM8_AWB
1725 			| OV7670_COM8_AEC},
1726 	{0xa1, 0xc8}
1727 };
1728 static const struct ov_i2c_regvals norm_9600[] = {
1729 	{0x12, 0x80},
1730 	{0x0c, 0x28},
1731 	{0x11, 0x80},
1732 	{0x13, 0xb5},
1733 	{0x14, 0x3e},
1734 	{0x1b, 0x04},
1735 	{0x24, 0xb0},
1736 	{0x25, 0x90},
1737 	{0x26, 0x94},
1738 	{0x35, 0x90},
1739 	{0x37, 0x07},
1740 	{0x38, 0x08},
1741 	{0x01, 0x8e},
1742 	{0x02, 0x85}
1743 };
1744 
1745 /* 7670. Defaults taken from OmniVision provided data,
1746 *  as provided by Jonathan Corbet of OLPC		*/
1747 static const struct ov_i2c_regvals norm_7670[] = {
1748 	{ OV7670_R12_COM7, OV7670_COM7_RESET },
1749 	{ OV7670_R3A_TSLB, 0x04 },		/* OV */
1750 	{ OV7670_R12_COM7, OV7670_COM7_FMT_VGA }, /* VGA */
1751 	{ OV7670_R11_CLKRC, 0x01 },
1752 /*
1753  * Set the hardware window.  These values from OV don't entirely
1754  * make sense - hstop is less than hstart.  But they work...
1755  */
1756 	{ OV7670_R17_HSTART, 0x13 },
1757 	{ OV7670_R18_HSTOP, 0x01 },
1758 	{ OV7670_R32_HREF, 0xb6 },
1759 	{ OV7670_R19_VSTART, 0x02 },
1760 	{ OV7670_R1A_VSTOP, 0x7a },
1761 	{ OV7670_R03_VREF, 0x0a },
1762 
1763 	{ OV7670_R0C_COM3, 0x00 },
1764 	{ OV7670_R3E_COM14, 0x00 },
1765 /* Mystery scaling numbers */
1766 	{ 0x70, 0x3a },
1767 	{ 0x71, 0x35 },
1768 	{ 0x72, 0x11 },
1769 	{ 0x73, 0xf0 },
1770 	{ 0xa2, 0x02 },
1771 /*	{ OV7670_R15_COM10, 0x0 }, */
1772 
1773 /* Gamma curve values */
1774 	{ 0x7a, 0x20 },
1775 	{ 0x7b, 0x10 },
1776 	{ 0x7c, 0x1e },
1777 	{ 0x7d, 0x35 },
1778 	{ 0x7e, 0x5a },
1779 	{ 0x7f, 0x69 },
1780 	{ 0x80, 0x76 },
1781 	{ 0x81, 0x80 },
1782 	{ 0x82, 0x88 },
1783 	{ 0x83, 0x8f },
1784 	{ 0x84, 0x96 },
1785 	{ 0x85, 0xa3 },
1786 	{ 0x86, 0xaf },
1787 	{ 0x87, 0xc4 },
1788 	{ 0x88, 0xd7 },
1789 	{ 0x89, 0xe8 },
1790 
1791 /* AGC and AEC parameters.  Note we start by disabling those features,
1792    then turn them only after tweaking the values. */
1793 	{ OV7670_R13_COM8, OV7670_COM8_FASTAEC
1794 			 | OV7670_COM8_AECSTEP
1795 			 | OV7670_COM8_BFILT },
1796 	{ OV7670_R00_GAIN, 0x00 },
1797 	{ OV7670_R10_AECH, 0x00 },
1798 	{ OV7670_R0D_COM4, 0x40 }, /* magic reserved bit */
1799 	{ OV7670_R14_COM9, 0x18 }, /* 4x gain + magic rsvd bit */
1800 	{ OV7670_RA5_BD50MAX, 0x05 },
1801 	{ OV7670_RAB_BD60MAX, 0x07 },
1802 	{ OV7670_R24_AEW, 0x95 },
1803 	{ OV7670_R25_AEB, 0x33 },
1804 	{ OV7670_R26_VPT, 0xe3 },
1805 	{ OV7670_R9F_HAECC1, 0x78 },
1806 	{ OV7670_RA0_HAECC2, 0x68 },
1807 	{ 0xa1, 0x03 }, /* magic */
1808 	{ OV7670_RA6_HAECC3, 0xd8 },
1809 	{ OV7670_RA7_HAECC4, 0xd8 },
1810 	{ OV7670_RA8_HAECC5, 0xf0 },
1811 	{ OV7670_RA9_HAECC6, 0x90 },
1812 	{ OV7670_RAA_HAECC7, 0x94 },
1813 	{ OV7670_R13_COM8, OV7670_COM8_FASTAEC
1814 			| OV7670_COM8_AECSTEP
1815 			| OV7670_COM8_BFILT
1816 			| OV7670_COM8_AGC
1817 			| OV7670_COM8_AEC },
1818 
1819 /* Almost all of these are magic "reserved" values.  */
1820 	{ OV7670_R0E_COM5, 0x61 },
1821 	{ OV7670_R0F_COM6, 0x4b },
1822 	{ 0x16, 0x02 },
1823 	{ OV7670_R1E_MVFP, 0x07 },
1824 	{ 0x21, 0x02 },
1825 	{ 0x22, 0x91 },
1826 	{ 0x29, 0x07 },
1827 	{ 0x33, 0x0b },
1828 	{ 0x35, 0x0b },
1829 	{ 0x37, 0x1d },
1830 	{ 0x38, 0x71 },
1831 	{ 0x39, 0x2a },
1832 	{ OV7670_R3C_COM12, 0x78 },
1833 	{ 0x4d, 0x40 },
1834 	{ 0x4e, 0x20 },
1835 	{ OV7670_R69_GFIX, 0x00 },
1836 	{ 0x6b, 0x4a },
1837 	{ 0x74, 0x10 },
1838 	{ 0x8d, 0x4f },
1839 	{ 0x8e, 0x00 },
1840 	{ 0x8f, 0x00 },
1841 	{ 0x90, 0x00 },
1842 	{ 0x91, 0x00 },
1843 	{ 0x96, 0x00 },
1844 	{ 0x9a, 0x00 },
1845 	{ 0xb0, 0x84 },
1846 	{ 0xb1, 0x0c },
1847 	{ 0xb2, 0x0e },
1848 	{ 0xb3, 0x82 },
1849 	{ 0xb8, 0x0a },
1850 
1851 /* More reserved magic, some of which tweaks white balance */
1852 	{ 0x43, 0x0a },
1853 	{ 0x44, 0xf0 },
1854 	{ 0x45, 0x34 },
1855 	{ 0x46, 0x58 },
1856 	{ 0x47, 0x28 },
1857 	{ 0x48, 0x3a },
1858 	{ 0x59, 0x88 },
1859 	{ 0x5a, 0x88 },
1860 	{ 0x5b, 0x44 },
1861 	{ 0x5c, 0x67 },
1862 	{ 0x5d, 0x49 },
1863 	{ 0x5e, 0x0e },
1864 	{ 0x6c, 0x0a },
1865 	{ 0x6d, 0x55 },
1866 	{ 0x6e, 0x11 },
1867 	{ 0x6f, 0x9f },			/* "9e for advance AWB" */
1868 	{ 0x6a, 0x40 },
1869 	{ OV7670_R01_BLUE, 0x40 },
1870 	{ OV7670_R02_RED, 0x60 },
1871 	{ OV7670_R13_COM8, OV7670_COM8_FASTAEC
1872 			| OV7670_COM8_AECSTEP
1873 			| OV7670_COM8_BFILT
1874 			| OV7670_COM8_AGC
1875 			| OV7670_COM8_AEC
1876 			| OV7670_COM8_AWB },
1877 
1878 /* Matrix coefficients */
1879 	{ 0x4f, 0x80 },
1880 	{ 0x50, 0x80 },
1881 	{ 0x51, 0x00 },
1882 	{ 0x52, 0x22 },
1883 	{ 0x53, 0x5e },
1884 	{ 0x54, 0x80 },
1885 	{ 0x58, 0x9e },
1886 
1887 	{ OV7670_R41_COM16, OV7670_COM16_AWBGAIN },
1888 	{ OV7670_R3F_EDGE, 0x00 },
1889 	{ 0x75, 0x05 },
1890 	{ 0x76, 0xe1 },
1891 	{ 0x4c, 0x00 },
1892 	{ 0x77, 0x01 },
1893 	{ OV7670_R3D_COM13, OV7670_COM13_GAMMA
1894 			  | OV7670_COM13_UVSAT
1895 			  | 2},		/* was 3 */
1896 	{ 0x4b, 0x09 },
1897 	{ 0xc9, 0x60 },
1898 	{ OV7670_R41_COM16, 0x38 },
1899 	{ 0x56, 0x40 },
1900 
1901 	{ 0x34, 0x11 },
1902 	{ OV7670_R3B_COM11, OV7670_COM11_EXP|OV7670_COM11_HZAUTO },
1903 	{ 0xa4, 0x88 },
1904 	{ 0x96, 0x00 },
1905 	{ 0x97, 0x30 },
1906 	{ 0x98, 0x20 },
1907 	{ 0x99, 0x30 },
1908 	{ 0x9a, 0x84 },
1909 	{ 0x9b, 0x29 },
1910 	{ 0x9c, 0x03 },
1911 	{ 0x9d, 0x4c },
1912 	{ 0x9e, 0x3f },
1913 	{ 0x78, 0x04 },
1914 
1915 /* Extra-weird stuff.  Some sort of multiplexor register */
1916 	{ 0x79, 0x01 },
1917 	{ 0xc8, 0xf0 },
1918 	{ 0x79, 0x0f },
1919 	{ 0xc8, 0x00 },
1920 	{ 0x79, 0x10 },
1921 	{ 0xc8, 0x7e },
1922 	{ 0x79, 0x0a },
1923 	{ 0xc8, 0x80 },
1924 	{ 0x79, 0x0b },
1925 	{ 0xc8, 0x01 },
1926 	{ 0x79, 0x0c },
1927 	{ 0xc8, 0x0f },
1928 	{ 0x79, 0x0d },
1929 	{ 0xc8, 0x20 },
1930 	{ 0x79, 0x09 },
1931 	{ 0xc8, 0x80 },
1932 	{ 0x79, 0x02 },
1933 	{ 0xc8, 0xc0 },
1934 	{ 0x79, 0x03 },
1935 	{ 0xc8, 0x40 },
1936 	{ 0x79, 0x05 },
1937 	{ 0xc8, 0x30 },
1938 	{ 0x79, 0x26 },
1939 };
1940 
1941 static const struct ov_i2c_regvals norm_8610[] = {
1942 	{ 0x12, 0x80 },
1943 	{ 0x00, 0x00 },
1944 	{ 0x01, 0x80 },
1945 	{ 0x02, 0x80 },
1946 	{ 0x03, 0xc0 },
1947 	{ 0x04, 0x30 },
1948 	{ 0x05, 0x30 }, /* was 0x10, new from windrv 090403 */
1949 	{ 0x06, 0x70 }, /* was 0x80, new from windrv 090403 */
1950 	{ 0x0a, 0x86 },
1951 	{ 0x0b, 0xb0 },
1952 	{ 0x0c, 0x20 },
1953 	{ 0x0d, 0x20 },
1954 	{ 0x11, 0x01 },
1955 	{ 0x12, 0x25 },
1956 	{ 0x13, 0x01 },
1957 	{ 0x14, 0x04 },
1958 	{ 0x15, 0x01 }, /* Lin and Win think different about UV order */
1959 	{ 0x16, 0x03 },
1960 	{ 0x17, 0x38 }, /* was 0x2f, new from windrv 090403 */
1961 	{ 0x18, 0xea }, /* was 0xcf, new from windrv 090403 */
1962 	{ 0x19, 0x02 }, /* was 0x06, new from windrv 090403 */
1963 	{ 0x1a, 0xf5 },
1964 	{ 0x1b, 0x00 },
1965 	{ 0x20, 0xd0 }, /* was 0x90, new from windrv 090403 */
1966 	{ 0x23, 0xc0 }, /* was 0x00, new from windrv 090403 */
1967 	{ 0x24, 0x30 }, /* was 0x1d, new from windrv 090403 */
1968 	{ 0x25, 0x50 }, /* was 0x57, new from windrv 090403 */
1969 	{ 0x26, 0xa2 },
1970 	{ 0x27, 0xea },
1971 	{ 0x28, 0x00 },
1972 	{ 0x29, 0x00 },
1973 	{ 0x2a, 0x80 },
1974 	{ 0x2b, 0xc8 }, /* was 0xcc, new from windrv 090403 */
1975 	{ 0x2c, 0xac },
1976 	{ 0x2d, 0x45 }, /* was 0xd5, new from windrv 090403 */
1977 	{ 0x2e, 0x80 },
1978 	{ 0x2f, 0x14 }, /* was 0x01, new from windrv 090403 */
1979 	{ 0x4c, 0x00 },
1980 	{ 0x4d, 0x30 }, /* was 0x10, new from windrv 090403 */
1981 	{ 0x60, 0x02 }, /* was 0x01, new from windrv 090403 */
1982 	{ 0x61, 0x00 }, /* was 0x09, new from windrv 090403 */
1983 	{ 0x62, 0x5f }, /* was 0xd7, new from windrv 090403 */
1984 	{ 0x63, 0xff },
1985 	{ 0x64, 0x53 }, /* new windrv 090403 says 0x57,
1986 			 * maybe thats wrong */
1987 	{ 0x65, 0x00 },
1988 	{ 0x66, 0x55 },
1989 	{ 0x67, 0xb0 },
1990 	{ 0x68, 0xc0 }, /* was 0xaf, new from windrv 090403 */
1991 	{ 0x69, 0x02 },
1992 	{ 0x6a, 0x22 },
1993 	{ 0x6b, 0x00 },
1994 	{ 0x6c, 0x99 }, /* was 0x80, old windrv says 0x00, but
1995 			 * deleting bit7 colors the first images red */
1996 	{ 0x6d, 0x11 }, /* was 0x00, new from windrv 090403 */
1997 	{ 0x6e, 0x11 }, /* was 0x00, new from windrv 090403 */
1998 	{ 0x6f, 0x01 },
1999 	{ 0x70, 0x8b },
2000 	{ 0x71, 0x00 },
2001 	{ 0x72, 0x14 },
2002 	{ 0x73, 0x54 },
2003 	{ 0x74, 0x00 },/* 0x60? - was 0x00, new from windrv 090403 */
2004 	{ 0x75, 0x0e },
2005 	{ 0x76, 0x02 }, /* was 0x02, new from windrv 090403 */
2006 	{ 0x77, 0xff },
2007 	{ 0x78, 0x80 },
2008 	{ 0x79, 0x80 },
2009 	{ 0x7a, 0x80 },
2010 	{ 0x7b, 0x10 }, /* was 0x13, new from windrv 090403 */
2011 	{ 0x7c, 0x00 },
2012 	{ 0x7d, 0x08 }, /* was 0x09, new from windrv 090403 */
2013 	{ 0x7e, 0x08 }, /* was 0xc0, new from windrv 090403 */
2014 	{ 0x7f, 0xfb },
2015 	{ 0x80, 0x28 },
2016 	{ 0x81, 0x00 },
2017 	{ 0x82, 0x23 },
2018 	{ 0x83, 0x0b },
2019 	{ 0x84, 0x00 },
2020 	{ 0x85, 0x62 }, /* was 0x61, new from windrv 090403 */
2021 	{ 0x86, 0xc9 },
2022 	{ 0x87, 0x00 },
2023 	{ 0x88, 0x00 },
2024 	{ 0x89, 0x01 },
2025 	{ 0x12, 0x20 },
2026 	{ 0x12, 0x25 }, /* was 0x24, new from windrv 090403 */
2027 };
2028 
2029 static unsigned char ov7670_abs_to_sm(unsigned char v)
2030 {
2031 	if (v > 127)
2032 		return v & 0x7f;
2033 	return (128 - v) | 0x80;
2034 }
2035 
2036 /* Write a OV519 register */
2037 static void reg_w(struct sd *sd, u16 index, u16 value)
2038 {
2039 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2040 	int ret, req = 0;
2041 
2042 	if (sd->gspca_dev.usb_err < 0)
2043 		return;
2044 
2045 	switch (sd->bridge) {
2046 	case BRIDGE_OV511:
2047 	case BRIDGE_OV511PLUS:
2048 		req = 2;
2049 		break;
2050 	case BRIDGE_OVFX2:
2051 		req = 0x0a;
2052 		/* fall through */
2053 	case BRIDGE_W9968CF:
2054 		PDEBUG(D_USBO, "SET %02x %04x %04x",
2055 				req, value, index);
2056 		ret = usb_control_msg(sd->gspca_dev.dev,
2057 			usb_sndctrlpipe(sd->gspca_dev.dev, 0),
2058 			req,
2059 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2060 			value, index, NULL, 0, 500);
2061 		goto leave;
2062 	default:
2063 		req = 1;
2064 	}
2065 
2066 	PDEBUG(D_USBO, "SET %02x 0000 %04x %02x",
2067 			req, index, value);
2068 	sd->gspca_dev.usb_buf[0] = value;
2069 	ret = usb_control_msg(sd->gspca_dev.dev,
2070 			usb_sndctrlpipe(sd->gspca_dev.dev, 0),
2071 			req,
2072 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2073 			0, index,
2074 			sd->gspca_dev.usb_buf, 1, 500);
2075 leave:
2076 	if (ret < 0) {
2077 		PERR("reg_w %02x failed %d\n", index, ret);
2078 		sd->gspca_dev.usb_err = ret;
2079 		return;
2080 	}
2081 }
2082 
2083 /* Read from a OV519 register, note not valid for the w9968cf!! */
2084 /* returns: negative is error, pos or zero is data */
2085 static int reg_r(struct sd *sd, u16 index)
2086 {
2087 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2088 	int ret;
2089 	int req;
2090 
2091 	if (sd->gspca_dev.usb_err < 0)
2092 		return -1;
2093 
2094 	switch (sd->bridge) {
2095 	case BRIDGE_OV511:
2096 	case BRIDGE_OV511PLUS:
2097 		req = 3;
2098 		break;
2099 	case BRIDGE_OVFX2:
2100 		req = 0x0b;
2101 		break;
2102 	default:
2103 		req = 1;
2104 	}
2105 
2106 	ret = usb_control_msg(sd->gspca_dev.dev,
2107 			usb_rcvctrlpipe(sd->gspca_dev.dev, 0),
2108 			req,
2109 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2110 			0, index, sd->gspca_dev.usb_buf, 1, 500);
2111 
2112 	if (ret >= 0) {
2113 		ret = sd->gspca_dev.usb_buf[0];
2114 		PDEBUG(D_USBI, "GET %02x 0000 %04x %02x",
2115 			req, index, ret);
2116 	} else {
2117 		PERR("reg_r %02x failed %d\n", index, ret);
2118 		sd->gspca_dev.usb_err = ret;
2119 	}
2120 
2121 	return ret;
2122 }
2123 
2124 /* Read 8 values from a OV519 register */
2125 static int reg_r8(struct sd *sd,
2126 		  u16 index)
2127 {
2128 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2129 	int ret;
2130 
2131 	if (sd->gspca_dev.usb_err < 0)
2132 		return -1;
2133 
2134 	ret = usb_control_msg(sd->gspca_dev.dev,
2135 			usb_rcvctrlpipe(sd->gspca_dev.dev, 0),
2136 			1,			/* REQ_IO */
2137 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2138 			0, index, sd->gspca_dev.usb_buf, 8, 500);
2139 
2140 	if (ret >= 0) {
2141 		ret = sd->gspca_dev.usb_buf[0];
2142 	} else {
2143 		PERR("reg_r8 %02x failed %d\n", index, ret);
2144 		sd->gspca_dev.usb_err = ret;
2145 	}
2146 
2147 	return ret;
2148 }
2149 
2150 /*
2151  * Writes bits at positions specified by mask to an OV51x reg. Bits that are in
2152  * the same position as 1's in "mask" are cleared and set to "value". Bits
2153  * that are in the same position as 0's in "mask" are preserved, regardless
2154  * of their respective state in "value".
2155  */
2156 static void reg_w_mask(struct sd *sd,
2157 			u16 index,
2158 			u8 value,
2159 			u8 mask)
2160 {
2161 	int ret;
2162 	u8 oldval;
2163 
2164 	if (mask != 0xff) {
2165 		value &= mask;			/* Enforce mask on value */
2166 		ret = reg_r(sd, index);
2167 		if (ret < 0)
2168 			return;
2169 
2170 		oldval = ret & ~mask;		/* Clear the masked bits */
2171 		value |= oldval;		/* Set the desired bits */
2172 	}
2173 	reg_w(sd, index, value);
2174 }
2175 
2176 /*
2177  * Writes multiple (n) byte value to a single register. Only valid with certain
2178  * registers (0x30 and 0xc4 - 0xce).
2179  */
2180 static void ov518_reg_w32(struct sd *sd, u16 index, u32 value, int n)
2181 {
2182 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2183 	int ret;
2184 
2185 	if (sd->gspca_dev.usb_err < 0)
2186 		return;
2187 
2188 	*((__le32 *) sd->gspca_dev.usb_buf) = __cpu_to_le32(value);
2189 
2190 	ret = usb_control_msg(sd->gspca_dev.dev,
2191 			usb_sndctrlpipe(sd->gspca_dev.dev, 0),
2192 			1 /* REG_IO */,
2193 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2194 			0, index,
2195 			sd->gspca_dev.usb_buf, n, 500);
2196 	if (ret < 0) {
2197 		PERR("reg_w32 %02x failed %d\n", index, ret);
2198 		sd->gspca_dev.usb_err = ret;
2199 	}
2200 }
2201 
2202 static void ov511_i2c_w(struct sd *sd, u8 reg, u8 value)
2203 {
2204 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2205 	int rc, retries;
2206 
2207 	PDEBUG(D_USBO, "ov511_i2c_w %02x %02x", reg, value);
2208 
2209 	/* Three byte write cycle */
2210 	for (retries = 6; ; ) {
2211 		/* Select camera register */
2212 		reg_w(sd, R51x_I2C_SADDR_3, reg);
2213 
2214 		/* Write "value" to I2C data port of OV511 */
2215 		reg_w(sd, R51x_I2C_DATA, value);
2216 
2217 		/* Initiate 3-byte write cycle */
2218 		reg_w(sd, R511_I2C_CTL, 0x01);
2219 
2220 		do {
2221 			rc = reg_r(sd, R511_I2C_CTL);
2222 		} while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */
2223 
2224 		if (rc < 0)
2225 			return;
2226 
2227 		if ((rc & 2) == 0) /* Ack? */
2228 			break;
2229 		if (--retries < 0) {
2230 			PDEBUG(D_USBO, "i2c write retries exhausted");
2231 			return;
2232 		}
2233 	}
2234 }
2235 
2236 static int ov511_i2c_r(struct sd *sd, u8 reg)
2237 {
2238 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2239 	int rc, value, retries;
2240 
2241 	/* Two byte write cycle */
2242 	for (retries = 6; ; ) {
2243 		/* Select camera register */
2244 		reg_w(sd, R51x_I2C_SADDR_2, reg);
2245 
2246 		/* Initiate 2-byte write cycle */
2247 		reg_w(sd, R511_I2C_CTL, 0x03);
2248 
2249 		do {
2250 			rc = reg_r(sd, R511_I2C_CTL);
2251 		} while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */
2252 
2253 		if (rc < 0)
2254 			return rc;
2255 
2256 		if ((rc & 2) == 0) /* Ack? */
2257 			break;
2258 
2259 		/* I2C abort */
2260 		reg_w(sd, R511_I2C_CTL, 0x10);
2261 
2262 		if (--retries < 0) {
2263 			PDEBUG(D_USBI, "i2c write retries exhausted");
2264 			return -1;
2265 		}
2266 	}
2267 
2268 	/* Two byte read cycle */
2269 	for (retries = 6; ; ) {
2270 		/* Initiate 2-byte read cycle */
2271 		reg_w(sd, R511_I2C_CTL, 0x05);
2272 
2273 		do {
2274 			rc = reg_r(sd, R511_I2C_CTL);
2275 		} while (rc > 0 && ((rc & 1) == 0)); /* Retry until idle */
2276 
2277 		if (rc < 0)
2278 			return rc;
2279 
2280 		if ((rc & 2) == 0) /* Ack? */
2281 			break;
2282 
2283 		/* I2C abort */
2284 		reg_w(sd, R511_I2C_CTL, 0x10);
2285 
2286 		if (--retries < 0) {
2287 			PDEBUG(D_USBI, "i2c read retries exhausted");
2288 			return -1;
2289 		}
2290 	}
2291 
2292 	value = reg_r(sd, R51x_I2C_DATA);
2293 
2294 	PDEBUG(D_USBI, "ov511_i2c_r %02x %02x", reg, value);
2295 
2296 	/* This is needed to make i2c_w() work */
2297 	reg_w(sd, R511_I2C_CTL, 0x05);
2298 
2299 	return value;
2300 }
2301 
2302 /*
2303  * The OV518 I2C I/O procedure is different, hence, this function.
2304  * This is normally only called from i2c_w(). Note that this function
2305  * always succeeds regardless of whether the sensor is present and working.
2306  */
2307 static void ov518_i2c_w(struct sd *sd,
2308 		u8 reg,
2309 		u8 value)
2310 {
2311 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2312 
2313 	PDEBUG(D_USBO, "ov518_i2c_w %02x %02x", reg, value);
2314 
2315 	/* Select camera register */
2316 	reg_w(sd, R51x_I2C_SADDR_3, reg);
2317 
2318 	/* Write "value" to I2C data port of OV511 */
2319 	reg_w(sd, R51x_I2C_DATA, value);
2320 
2321 	/* Initiate 3-byte write cycle */
2322 	reg_w(sd, R518_I2C_CTL, 0x01);
2323 
2324 	/* wait for write complete */
2325 	msleep(4);
2326 	reg_r8(sd, R518_I2C_CTL);
2327 }
2328 
2329 /*
2330  * returns: negative is error, pos or zero is data
2331  *
2332  * The OV518 I2C I/O procedure is different, hence, this function.
2333  * This is normally only called from i2c_r(). Note that this function
2334  * always succeeds regardless of whether the sensor is present and working.
2335  */
2336 static int ov518_i2c_r(struct sd *sd, u8 reg)
2337 {
2338 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2339 	int value;
2340 
2341 	/* Select camera register */
2342 	reg_w(sd, R51x_I2C_SADDR_2, reg);
2343 
2344 	/* Initiate 2-byte write cycle */
2345 	reg_w(sd, R518_I2C_CTL, 0x03);
2346 	reg_r8(sd, R518_I2C_CTL);
2347 
2348 	/* Initiate 2-byte read cycle */
2349 	reg_w(sd, R518_I2C_CTL, 0x05);
2350 	reg_r8(sd, R518_I2C_CTL);
2351 
2352 	value = reg_r(sd, R51x_I2C_DATA);
2353 	PDEBUG(D_USBI, "ov518_i2c_r %02x %02x", reg, value);
2354 	return value;
2355 }
2356 
2357 static void ovfx2_i2c_w(struct sd *sd, u8 reg, u8 value)
2358 {
2359 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2360 	int ret;
2361 
2362 	if (sd->gspca_dev.usb_err < 0)
2363 		return;
2364 
2365 	ret = usb_control_msg(sd->gspca_dev.dev,
2366 			usb_sndctrlpipe(sd->gspca_dev.dev, 0),
2367 			0x02,
2368 			USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2369 			(u16) value, (u16) reg, NULL, 0, 500);
2370 
2371 	if (ret < 0) {
2372 		PERR("ovfx2_i2c_w %02x failed %d\n", reg, ret);
2373 		sd->gspca_dev.usb_err = ret;
2374 	}
2375 
2376 	PDEBUG(D_USBO, "ovfx2_i2c_w %02x %02x", reg, value);
2377 }
2378 
2379 static int ovfx2_i2c_r(struct sd *sd, u8 reg)
2380 {
2381 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2382 	int ret;
2383 
2384 	if (sd->gspca_dev.usb_err < 0)
2385 		return -1;
2386 
2387 	ret = usb_control_msg(sd->gspca_dev.dev,
2388 			usb_rcvctrlpipe(sd->gspca_dev.dev, 0),
2389 			0x03,
2390 			USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
2391 			0, (u16) reg, sd->gspca_dev.usb_buf, 1, 500);
2392 
2393 	if (ret >= 0) {
2394 		ret = sd->gspca_dev.usb_buf[0];
2395 		PDEBUG(D_USBI, "ovfx2_i2c_r %02x %02x", reg, ret);
2396 	} else {
2397 		PERR("ovfx2_i2c_r %02x failed %d\n", reg, ret);
2398 		sd->gspca_dev.usb_err = ret;
2399 	}
2400 
2401 	return ret;
2402 }
2403 
2404 static void i2c_w(struct sd *sd, u8 reg, u8 value)
2405 {
2406 	if (sd->sensor_reg_cache[reg] == value)
2407 		return;
2408 
2409 	switch (sd->bridge) {
2410 	case BRIDGE_OV511:
2411 	case BRIDGE_OV511PLUS:
2412 		ov511_i2c_w(sd, reg, value);
2413 		break;
2414 	case BRIDGE_OV518:
2415 	case BRIDGE_OV518PLUS:
2416 	case BRIDGE_OV519:
2417 		ov518_i2c_w(sd, reg, value);
2418 		break;
2419 	case BRIDGE_OVFX2:
2420 		ovfx2_i2c_w(sd, reg, value);
2421 		break;
2422 	case BRIDGE_W9968CF:
2423 		w9968cf_i2c_w(sd, reg, value);
2424 		break;
2425 	}
2426 
2427 	if (sd->gspca_dev.usb_err >= 0) {
2428 		/* Up on sensor reset empty the register cache */
2429 		if (reg == 0x12 && (value & 0x80))
2430 			memset(sd->sensor_reg_cache, -1,
2431 				sizeof(sd->sensor_reg_cache));
2432 		else
2433 			sd->sensor_reg_cache[reg] = value;
2434 	}
2435 }
2436 
2437 static int i2c_r(struct sd *sd, u8 reg)
2438 {
2439 	int ret = -1;
2440 
2441 	if (sd->sensor_reg_cache[reg] != -1)
2442 		return sd->sensor_reg_cache[reg];
2443 
2444 	switch (sd->bridge) {
2445 	case BRIDGE_OV511:
2446 	case BRIDGE_OV511PLUS:
2447 		ret = ov511_i2c_r(sd, reg);
2448 		break;
2449 	case BRIDGE_OV518:
2450 	case BRIDGE_OV518PLUS:
2451 	case BRIDGE_OV519:
2452 		ret = ov518_i2c_r(sd, reg);
2453 		break;
2454 	case BRIDGE_OVFX2:
2455 		ret = ovfx2_i2c_r(sd, reg);
2456 		break;
2457 	case BRIDGE_W9968CF:
2458 		ret = w9968cf_i2c_r(sd, reg);
2459 		break;
2460 	}
2461 
2462 	if (ret >= 0)
2463 		sd->sensor_reg_cache[reg] = ret;
2464 
2465 	return ret;
2466 }
2467 
2468 /* Writes bits at positions specified by mask to an I2C reg. Bits that are in
2469  * the same position as 1's in "mask" are cleared and set to "value". Bits
2470  * that are in the same position as 0's in "mask" are preserved, regardless
2471  * of their respective state in "value".
2472  */
2473 static void i2c_w_mask(struct sd *sd,
2474 			u8 reg,
2475 			u8 value,
2476 			u8 mask)
2477 {
2478 	int rc;
2479 	u8 oldval;
2480 
2481 	value &= mask;			/* Enforce mask on value */
2482 	rc = i2c_r(sd, reg);
2483 	if (rc < 0)
2484 		return;
2485 	oldval = rc & ~mask;		/* Clear the masked bits */
2486 	value |= oldval;		/* Set the desired bits */
2487 	i2c_w(sd, reg, value);
2488 }
2489 
2490 /* Temporarily stops OV511 from functioning. Must do this before changing
2491  * registers while the camera is streaming */
2492 static inline void ov51x_stop(struct sd *sd)
2493 {
2494 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2495 
2496 	PDEBUG(D_STREAM, "stopping");
2497 	sd->stopped = 1;
2498 	switch (sd->bridge) {
2499 	case BRIDGE_OV511:
2500 	case BRIDGE_OV511PLUS:
2501 		reg_w(sd, R51x_SYS_RESET, 0x3d);
2502 		break;
2503 	case BRIDGE_OV518:
2504 	case BRIDGE_OV518PLUS:
2505 		reg_w_mask(sd, R51x_SYS_RESET, 0x3a, 0x3a);
2506 		break;
2507 	case BRIDGE_OV519:
2508 		reg_w(sd, OV519_R51_RESET1, 0x0f);
2509 		reg_w(sd, OV519_R51_RESET1, 0x00);
2510 		reg_w(sd, 0x22, 0x00);		/* FRAR */
2511 		break;
2512 	case BRIDGE_OVFX2:
2513 		reg_w_mask(sd, 0x0f, 0x00, 0x02);
2514 		break;
2515 	case BRIDGE_W9968CF:
2516 		reg_w(sd, 0x3c, 0x0a05); /* stop USB transfer */
2517 		break;
2518 	}
2519 }
2520 
2521 /* Restarts OV511 after ov511_stop() is called. Has no effect if it is not
2522  * actually stopped (for performance). */
2523 static inline void ov51x_restart(struct sd *sd)
2524 {
2525 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2526 
2527 	PDEBUG(D_STREAM, "restarting");
2528 	if (!sd->stopped)
2529 		return;
2530 	sd->stopped = 0;
2531 
2532 	/* Reinitialize the stream */
2533 	switch (sd->bridge) {
2534 	case BRIDGE_OV511:
2535 	case BRIDGE_OV511PLUS:
2536 		reg_w(sd, R51x_SYS_RESET, 0x00);
2537 		break;
2538 	case BRIDGE_OV518:
2539 	case BRIDGE_OV518PLUS:
2540 		reg_w(sd, 0x2f, 0x80);
2541 		reg_w(sd, R51x_SYS_RESET, 0x00);
2542 		break;
2543 	case BRIDGE_OV519:
2544 		reg_w(sd, OV519_R51_RESET1, 0x0f);
2545 		reg_w(sd, OV519_R51_RESET1, 0x00);
2546 		reg_w(sd, 0x22, 0x1d);		/* FRAR */
2547 		break;
2548 	case BRIDGE_OVFX2:
2549 		reg_w_mask(sd, 0x0f, 0x02, 0x02);
2550 		break;
2551 	case BRIDGE_W9968CF:
2552 		reg_w(sd, 0x3c, 0x8a05); /* USB FIFO enable */
2553 		break;
2554 	}
2555 }
2556 
2557 static void ov51x_set_slave_ids(struct sd *sd, u8 slave);
2558 
2559 /* This does an initial reset of an OmniVision sensor and ensures that I2C
2560  * is synchronized. Returns <0 on failure.
2561  */
2562 static int init_ov_sensor(struct sd *sd, u8 slave)
2563 {
2564 	int i;
2565 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2566 
2567 	ov51x_set_slave_ids(sd, slave);
2568 
2569 	/* Reset the sensor */
2570 	i2c_w(sd, 0x12, 0x80);
2571 
2572 	/* Wait for it to initialize */
2573 	msleep(150);
2574 
2575 	for (i = 0; i < i2c_detect_tries; i++) {
2576 		if (i2c_r(sd, OV7610_REG_ID_HIGH) == 0x7f &&
2577 		    i2c_r(sd, OV7610_REG_ID_LOW) == 0xa2) {
2578 			PDEBUG(D_PROBE, "I2C synced in %d attempt(s)", i);
2579 			return 0;
2580 		}
2581 
2582 		/* Reset the sensor */
2583 		i2c_w(sd, 0x12, 0x80);
2584 
2585 		/* Wait for it to initialize */
2586 		msleep(150);
2587 
2588 		/* Dummy read to sync I2C */
2589 		if (i2c_r(sd, 0x00) < 0)
2590 			return -1;
2591 	}
2592 	return -1;
2593 }
2594 
2595 /* Set the read and write slave IDs. The "slave" argument is the write slave,
2596  * and the read slave will be set to (slave + 1).
2597  * This should not be called from outside the i2c I/O functions.
2598  * Sets I2C read and write slave IDs. Returns <0 for error
2599  */
2600 static void ov51x_set_slave_ids(struct sd *sd,
2601 				u8 slave)
2602 {
2603 	switch (sd->bridge) {
2604 	case BRIDGE_OVFX2:
2605 		reg_w(sd, OVFX2_I2C_ADDR, slave);
2606 		return;
2607 	case BRIDGE_W9968CF:
2608 		sd->sensor_addr = slave;
2609 		return;
2610 	}
2611 
2612 	reg_w(sd, R51x_I2C_W_SID, slave);
2613 	reg_w(sd, R51x_I2C_R_SID, slave + 1);
2614 }
2615 
2616 static void write_regvals(struct sd *sd,
2617 			 const struct ov_regvals *regvals,
2618 			 int n)
2619 {
2620 	while (--n >= 0) {
2621 		reg_w(sd, regvals->reg, regvals->val);
2622 		regvals++;
2623 	}
2624 }
2625 
2626 static void write_i2c_regvals(struct sd *sd,
2627 			const struct ov_i2c_regvals *regvals,
2628 			int n)
2629 {
2630 	while (--n >= 0) {
2631 		i2c_w(sd, regvals->reg, regvals->val);
2632 		regvals++;
2633 	}
2634 }
2635 
2636 /****************************************************************************
2637  *
2638  * OV511 and sensor configuration
2639  *
2640  ***************************************************************************/
2641 
2642 /* This initializes the OV2x10 / OV3610 / OV3620 / OV9600 */
2643 static void ov_hires_configure(struct sd *sd)
2644 {
2645 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2646 	int high, low;
2647 
2648 	if (sd->bridge != BRIDGE_OVFX2) {
2649 		PERR("error hires sensors only supported with ovfx2\n");
2650 		return;
2651 	}
2652 
2653 	PDEBUG(D_PROBE, "starting ov hires configuration");
2654 
2655 	/* Detect sensor (sub)type */
2656 	high = i2c_r(sd, 0x0a);
2657 	low = i2c_r(sd, 0x0b);
2658 	/* info("%x, %x", high, low); */
2659 	switch (high) {
2660 	case 0x96:
2661 		switch (low) {
2662 		case 0x40:
2663 			PDEBUG(D_PROBE, "Sensor is a OV2610");
2664 			sd->sensor = SEN_OV2610;
2665 			return;
2666 		case 0x41:
2667 			PDEBUG(D_PROBE, "Sensor is a OV2610AE");
2668 			sd->sensor = SEN_OV2610AE;
2669 			return;
2670 		case 0xb1:
2671 			PDEBUG(D_PROBE, "Sensor is a OV9600");
2672 			sd->sensor = SEN_OV9600;
2673 			return;
2674 		}
2675 		break;
2676 	case 0x36:
2677 		if ((low & 0x0f) == 0x00) {
2678 			PDEBUG(D_PROBE, "Sensor is a OV3610");
2679 			sd->sensor = SEN_OV3610;
2680 			return;
2681 		}
2682 		break;
2683 	}
2684 	PERR("Error unknown sensor type: %02x%02x\n", high, low);
2685 }
2686 
2687 /* This initializes the OV8110, OV8610 sensor. The OV8110 uses
2688  * the same register settings as the OV8610, since they are very similar.
2689  */
2690 static void ov8xx0_configure(struct sd *sd)
2691 {
2692 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2693 	int rc;
2694 
2695 	PDEBUG(D_PROBE, "starting ov8xx0 configuration");
2696 
2697 	/* Detect sensor (sub)type */
2698 	rc = i2c_r(sd, OV7610_REG_COM_I);
2699 	if (rc < 0) {
2700 		PERR("Error detecting sensor type");
2701 		return;
2702 	}
2703 	if ((rc & 3) == 1)
2704 		sd->sensor = SEN_OV8610;
2705 	else
2706 		PERR("Unknown image sensor version: %d\n", rc & 3);
2707 }
2708 
2709 /* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses
2710  * the same register settings as the OV7610, since they are very similar.
2711  */
2712 static void ov7xx0_configure(struct sd *sd)
2713 {
2714 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2715 	int rc, high, low;
2716 
2717 	PDEBUG(D_PROBE, "starting OV7xx0 configuration");
2718 
2719 	/* Detect sensor (sub)type */
2720 	rc = i2c_r(sd, OV7610_REG_COM_I);
2721 
2722 	/* add OV7670 here
2723 	 * it appears to be wrongly detected as a 7610 by default */
2724 	if (rc < 0) {
2725 		PERR("Error detecting sensor type\n");
2726 		return;
2727 	}
2728 	if ((rc & 3) == 3) {
2729 		/* quick hack to make OV7670s work */
2730 		high = i2c_r(sd, 0x0a);
2731 		low = i2c_r(sd, 0x0b);
2732 		/* info("%x, %x", high, low); */
2733 		if (high == 0x76 && (low & 0xf0) == 0x70) {
2734 			PDEBUG(D_PROBE, "Sensor is an OV76%02x", low);
2735 			sd->sensor = SEN_OV7670;
2736 		} else {
2737 			PDEBUG(D_PROBE, "Sensor is an OV7610");
2738 			sd->sensor = SEN_OV7610;
2739 		}
2740 	} else if ((rc & 3) == 1) {
2741 		/* I don't know what's different about the 76BE yet. */
2742 		if (i2c_r(sd, 0x15) & 1) {
2743 			PDEBUG(D_PROBE, "Sensor is an OV7620AE");
2744 			sd->sensor = SEN_OV7620AE;
2745 		} else {
2746 			PDEBUG(D_PROBE, "Sensor is an OV76BE");
2747 			sd->sensor = SEN_OV76BE;
2748 		}
2749 	} else if ((rc & 3) == 0) {
2750 		/* try to read product id registers */
2751 		high = i2c_r(sd, 0x0a);
2752 		if (high < 0) {
2753 			PERR("Error detecting camera chip PID\n");
2754 			return;
2755 		}
2756 		low = i2c_r(sd, 0x0b);
2757 		if (low < 0) {
2758 			PERR("Error detecting camera chip VER\n");
2759 			return;
2760 		}
2761 		if (high == 0x76) {
2762 			switch (low) {
2763 			case 0x30:
2764 				PERR("Sensor is an OV7630/OV7635\n");
2765 				PERR("7630 is not supported by this driver\n");
2766 				return;
2767 			case 0x40:
2768 				PDEBUG(D_PROBE, "Sensor is an OV7645");
2769 				sd->sensor = SEN_OV7640; /* FIXME */
2770 				break;
2771 			case 0x45:
2772 				PDEBUG(D_PROBE, "Sensor is an OV7645B");
2773 				sd->sensor = SEN_OV7640; /* FIXME */
2774 				break;
2775 			case 0x48:
2776 				PDEBUG(D_PROBE, "Sensor is an OV7648");
2777 				sd->sensor = SEN_OV7648;
2778 				break;
2779 			case 0x60:
2780 				PDEBUG(D_PROBE, "Sensor is a OV7660");
2781 				sd->sensor = SEN_OV7660;
2782 				break;
2783 			default:
2784 				PERR("Unknown sensor: 0x76%02x\n", low);
2785 				return;
2786 			}
2787 		} else {
2788 			PDEBUG(D_PROBE, "Sensor is an OV7620");
2789 			sd->sensor = SEN_OV7620;
2790 		}
2791 	} else {
2792 		PERR("Unknown image sensor version: %d\n", rc & 3);
2793 	}
2794 }
2795 
2796 /* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */
2797 static void ov6xx0_configure(struct sd *sd)
2798 {
2799 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2800 	int rc;
2801 
2802 	PDEBUG(D_PROBE, "starting OV6xx0 configuration");
2803 
2804 	/* Detect sensor (sub)type */
2805 	rc = i2c_r(sd, OV7610_REG_COM_I);
2806 	if (rc < 0) {
2807 		PERR("Error detecting sensor type\n");
2808 		return;
2809 	}
2810 
2811 	/* Ugh. The first two bits are the version bits, but
2812 	 * the entire register value must be used. I guess OVT
2813 	 * underestimated how many variants they would make. */
2814 	switch (rc) {
2815 	case 0x00:
2816 		sd->sensor = SEN_OV6630;
2817 		pr_warn("WARNING: Sensor is an OV66308. Your camera may have been misdetected in previous driver versions.\n");
2818 		break;
2819 	case 0x01:
2820 		sd->sensor = SEN_OV6620;
2821 		PDEBUG(D_PROBE, "Sensor is an OV6620");
2822 		break;
2823 	case 0x02:
2824 		sd->sensor = SEN_OV6630;
2825 		PDEBUG(D_PROBE, "Sensor is an OV66308AE");
2826 		break;
2827 	case 0x03:
2828 		sd->sensor = SEN_OV66308AF;
2829 		PDEBUG(D_PROBE, "Sensor is an OV66308AF");
2830 		break;
2831 	case 0x90:
2832 		sd->sensor = SEN_OV6630;
2833 		pr_warn("WARNING: Sensor is an OV66307. Your camera may have been misdetected in previous driver versions.\n");
2834 		break;
2835 	default:
2836 		PERR("FATAL: Unknown sensor version: 0x%02x\n", rc);
2837 		return;
2838 	}
2839 
2840 	/* Set sensor-specific vars */
2841 	sd->sif = 1;
2842 }
2843 
2844 /* Turns on or off the LED. Only has an effect with OV511+/OV518(+)/OV519 */
2845 static void ov51x_led_control(struct sd *sd, int on)
2846 {
2847 	if (sd->invert_led)
2848 		on = !on;
2849 
2850 	switch (sd->bridge) {
2851 	/* OV511 has no LED control */
2852 	case BRIDGE_OV511PLUS:
2853 		reg_w(sd, R511_SYS_LED_CTL, on);
2854 		break;
2855 	case BRIDGE_OV518:
2856 	case BRIDGE_OV518PLUS:
2857 		reg_w_mask(sd, R518_GPIO_OUT, 0x02 * on, 0x02);
2858 		break;
2859 	case BRIDGE_OV519:
2860 		reg_w_mask(sd, OV519_GPIO_DATA_OUT0, on, 1);
2861 		break;
2862 	}
2863 }
2864 
2865 static void sd_reset_snapshot(struct gspca_dev *gspca_dev)
2866 {
2867 	struct sd *sd = (struct sd *) gspca_dev;
2868 
2869 	if (!sd->snapshot_needs_reset)
2870 		return;
2871 
2872 	/* Note it is important that we clear sd->snapshot_needs_reset,
2873 	   before actually clearing the snapshot state in the bridge
2874 	   otherwise we might race with the pkt_scan interrupt handler */
2875 	sd->snapshot_needs_reset = 0;
2876 
2877 	switch (sd->bridge) {
2878 	case BRIDGE_OV511:
2879 	case BRIDGE_OV511PLUS:
2880 		reg_w(sd, R51x_SYS_SNAP, 0x02);
2881 		reg_w(sd, R51x_SYS_SNAP, 0x00);
2882 		break;
2883 	case BRIDGE_OV518:
2884 	case BRIDGE_OV518PLUS:
2885 		reg_w(sd, R51x_SYS_SNAP, 0x02); /* Reset */
2886 		reg_w(sd, R51x_SYS_SNAP, 0x01); /* Enable */
2887 		break;
2888 	case BRIDGE_OV519:
2889 		reg_w(sd, R51x_SYS_RESET, 0x40);
2890 		reg_w(sd, R51x_SYS_RESET, 0x00);
2891 		break;
2892 	}
2893 }
2894 
2895 static void ov51x_upload_quan_tables(struct sd *sd)
2896 {
2897 	const unsigned char yQuanTable511[] = {
2898 		0, 1, 1, 2, 2, 3, 3, 4,
2899 		1, 1, 1, 2, 2, 3, 4, 4,
2900 		1, 1, 2, 2, 3, 4, 4, 4,
2901 		2, 2, 2, 3, 4, 4, 4, 4,
2902 		2, 2, 3, 4, 4, 5, 5, 5,
2903 		3, 3, 4, 4, 5, 5, 5, 5,
2904 		3, 4, 4, 4, 5, 5, 5, 5,
2905 		4, 4, 4, 4, 5, 5, 5, 5
2906 	};
2907 
2908 	const unsigned char uvQuanTable511[] = {
2909 		0, 2, 2, 3, 4, 4, 4, 4,
2910 		2, 2, 2, 4, 4, 4, 4, 4,
2911 		2, 2, 3, 4, 4, 4, 4, 4,
2912 		3, 4, 4, 4, 4, 4, 4, 4,
2913 		4, 4, 4, 4, 4, 4, 4, 4,
2914 		4, 4, 4, 4, 4, 4, 4, 4,
2915 		4, 4, 4, 4, 4, 4, 4, 4,
2916 		4, 4, 4, 4, 4, 4, 4, 4
2917 	};
2918 
2919 	/* OV518 quantization tables are 8x4 (instead of 8x8) */
2920 	const unsigned char yQuanTable518[] = {
2921 		5, 4, 5, 6, 6, 7, 7, 7,
2922 		5, 5, 5, 5, 6, 7, 7, 7,
2923 		6, 6, 6, 6, 7, 7, 7, 8,
2924 		7, 7, 6, 7, 7, 7, 8, 8
2925 	};
2926 	const unsigned char uvQuanTable518[] = {
2927 		6, 6, 6, 7, 7, 7, 7, 7,
2928 		6, 6, 6, 7, 7, 7, 7, 7,
2929 		6, 6, 6, 7, 7, 7, 7, 8,
2930 		7, 7, 7, 7, 7, 7, 8, 8
2931 	};
2932 
2933 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
2934 	const unsigned char *pYTable, *pUVTable;
2935 	unsigned char val0, val1;
2936 	int i, size, reg = R51x_COMP_LUT_BEGIN;
2937 
2938 	PDEBUG(D_PROBE, "Uploading quantization tables");
2939 
2940 	if (sd->bridge == BRIDGE_OV511 || sd->bridge == BRIDGE_OV511PLUS) {
2941 		pYTable = yQuanTable511;
2942 		pUVTable = uvQuanTable511;
2943 		size = 32;
2944 	} else {
2945 		pYTable = yQuanTable518;
2946 		pUVTable = uvQuanTable518;
2947 		size = 16;
2948 	}
2949 
2950 	for (i = 0; i < size; i++) {
2951 		val0 = *pYTable++;
2952 		val1 = *pYTable++;
2953 		val0 &= 0x0f;
2954 		val1 &= 0x0f;
2955 		val0 |= val1 << 4;
2956 		reg_w(sd, reg, val0);
2957 
2958 		val0 = *pUVTable++;
2959 		val1 = *pUVTable++;
2960 		val0 &= 0x0f;
2961 		val1 &= 0x0f;
2962 		val0 |= val1 << 4;
2963 		reg_w(sd, reg + size, val0);
2964 
2965 		reg++;
2966 	}
2967 }
2968 
2969 /* This initializes the OV511/OV511+ and the sensor */
2970 static void ov511_configure(struct gspca_dev *gspca_dev)
2971 {
2972 	struct sd *sd = (struct sd *) gspca_dev;
2973 
2974 	/* For 511 and 511+ */
2975 	const struct ov_regvals init_511[] = {
2976 		{ R51x_SYS_RESET,	0x7f },
2977 		{ R51x_SYS_INIT,	0x01 },
2978 		{ R51x_SYS_RESET,	0x7f },
2979 		{ R51x_SYS_INIT,	0x01 },
2980 		{ R51x_SYS_RESET,	0x3f },
2981 		{ R51x_SYS_INIT,	0x01 },
2982 		{ R51x_SYS_RESET,	0x3d },
2983 	};
2984 
2985 	const struct ov_regvals norm_511[] = {
2986 		{ R511_DRAM_FLOW_CTL,	0x01 },
2987 		{ R51x_SYS_SNAP,	0x00 },
2988 		{ R51x_SYS_SNAP,	0x02 },
2989 		{ R51x_SYS_SNAP,	0x00 },
2990 		{ R511_FIFO_OPTS,	0x1f },
2991 		{ R511_COMP_EN,		0x00 },
2992 		{ R511_COMP_LUT_EN,	0x03 },
2993 	};
2994 
2995 	const struct ov_regvals norm_511_p[] = {
2996 		{ R511_DRAM_FLOW_CTL,	0xff },
2997 		{ R51x_SYS_SNAP,	0x00 },
2998 		{ R51x_SYS_SNAP,	0x02 },
2999 		{ R51x_SYS_SNAP,	0x00 },
3000 		{ R511_FIFO_OPTS,	0xff },
3001 		{ R511_COMP_EN,		0x00 },
3002 		{ R511_COMP_LUT_EN,	0x03 },
3003 	};
3004 
3005 	const struct ov_regvals compress_511[] = {
3006 		{ 0x70, 0x1f },
3007 		{ 0x71, 0x05 },
3008 		{ 0x72, 0x06 },
3009 		{ 0x73, 0x06 },
3010 		{ 0x74, 0x14 },
3011 		{ 0x75, 0x03 },
3012 		{ 0x76, 0x04 },
3013 		{ 0x77, 0x04 },
3014 	};
3015 
3016 	PDEBUG(D_PROBE, "Device custom id %x", reg_r(sd, R51x_SYS_CUST_ID));
3017 
3018 	write_regvals(sd, init_511, ARRAY_SIZE(init_511));
3019 
3020 	switch (sd->bridge) {
3021 	case BRIDGE_OV511:
3022 		write_regvals(sd, norm_511, ARRAY_SIZE(norm_511));
3023 		break;
3024 	case BRIDGE_OV511PLUS:
3025 		write_regvals(sd, norm_511_p, ARRAY_SIZE(norm_511_p));
3026 		break;
3027 	}
3028 
3029 	/* Init compression */
3030 	write_regvals(sd, compress_511, ARRAY_SIZE(compress_511));
3031 
3032 	ov51x_upload_quan_tables(sd);
3033 }
3034 
3035 /* This initializes the OV518/OV518+ and the sensor */
3036 static void ov518_configure(struct gspca_dev *gspca_dev)
3037 {
3038 	struct sd *sd = (struct sd *) gspca_dev;
3039 
3040 	/* For 518 and 518+ */
3041 	const struct ov_regvals init_518[] = {
3042 		{ R51x_SYS_RESET,	0x40 },
3043 		{ R51x_SYS_INIT,	0xe1 },
3044 		{ R51x_SYS_RESET,	0x3e },
3045 		{ R51x_SYS_INIT,	0xe1 },
3046 		{ R51x_SYS_RESET,	0x00 },
3047 		{ R51x_SYS_INIT,	0xe1 },
3048 		{ 0x46,			0x00 },
3049 		{ 0x5d,			0x03 },
3050 	};
3051 
3052 	const struct ov_regvals norm_518[] = {
3053 		{ R51x_SYS_SNAP,	0x02 }, /* Reset */
3054 		{ R51x_SYS_SNAP,	0x01 }, /* Enable */
3055 		{ 0x31,			0x0f },
3056 		{ 0x5d,			0x03 },
3057 		{ 0x24,			0x9f },
3058 		{ 0x25,			0x90 },
3059 		{ 0x20,			0x00 },
3060 		{ 0x51,			0x04 },
3061 		{ 0x71,			0x19 },
3062 		{ 0x2f,			0x80 },
3063 	};
3064 
3065 	const struct ov_regvals norm_518_p[] = {
3066 		{ R51x_SYS_SNAP,	0x02 }, /* Reset */
3067 		{ R51x_SYS_SNAP,	0x01 }, /* Enable */
3068 		{ 0x31,			0x0f },
3069 		{ 0x5d,			0x03 },
3070 		{ 0x24,			0x9f },
3071 		{ 0x25,			0x90 },
3072 		{ 0x20,			0x60 },
3073 		{ 0x51,			0x02 },
3074 		{ 0x71,			0x19 },
3075 		{ 0x40,			0xff },
3076 		{ 0x41,			0x42 },
3077 		{ 0x46,			0x00 },
3078 		{ 0x33,			0x04 },
3079 		{ 0x21,			0x19 },
3080 		{ 0x3f,			0x10 },
3081 		{ 0x2f,			0x80 },
3082 	};
3083 
3084 	/* First 5 bits of custom ID reg are a revision ID on OV518 */
3085 	sd->revision = reg_r(sd, R51x_SYS_CUST_ID) & 0x1f;
3086 	PDEBUG(D_PROBE, "Device revision %d", sd->revision);
3087 
3088 	write_regvals(sd, init_518, ARRAY_SIZE(init_518));
3089 
3090 	/* Set LED GPIO pin to output mode */
3091 	reg_w_mask(sd, R518_GPIO_CTL, 0x00, 0x02);
3092 
3093 	switch (sd->bridge) {
3094 	case BRIDGE_OV518:
3095 		write_regvals(sd, norm_518, ARRAY_SIZE(norm_518));
3096 		break;
3097 	case BRIDGE_OV518PLUS:
3098 		write_regvals(sd, norm_518_p, ARRAY_SIZE(norm_518_p));
3099 		break;
3100 	}
3101 
3102 	ov51x_upload_quan_tables(sd);
3103 
3104 	reg_w(sd, 0x2f, 0x80);
3105 }
3106 
3107 static void ov519_configure(struct sd *sd)
3108 {
3109 	static const struct ov_regvals init_519[] = {
3110 		{ 0x5a, 0x6d }, /* EnableSystem */
3111 		{ 0x53, 0x9b }, /* don't enable the microcontroller */
3112 		{ OV519_R54_EN_CLK1, 0xff }, /* set bit2 to enable jpeg */
3113 		{ 0x5d, 0x03 },
3114 		{ 0x49, 0x01 },
3115 		{ 0x48, 0x00 },
3116 		/* Set LED pin to output mode. Bit 4 must be cleared or sensor
3117 		 * detection will fail. This deserves further investigation. */
3118 		{ OV519_GPIO_IO_CTRL0,   0xee },
3119 		{ OV519_R51_RESET1, 0x0f },
3120 		{ OV519_R51_RESET1, 0x00 },
3121 		{ 0x22, 0x00 },
3122 		/* windows reads 0x55 at this point*/
3123 	};
3124 
3125 	write_regvals(sd, init_519, ARRAY_SIZE(init_519));
3126 }
3127 
3128 static void ovfx2_configure(struct sd *sd)
3129 {
3130 	static const struct ov_regvals init_fx2[] = {
3131 		{ 0x00, 0x60 },
3132 		{ 0x02, 0x01 },
3133 		{ 0x0f, 0x1d },
3134 		{ 0xe9, 0x82 },
3135 		{ 0xea, 0xc7 },
3136 		{ 0xeb, 0x10 },
3137 		{ 0xec, 0xf6 },
3138 	};
3139 
3140 	sd->stopped = 1;
3141 
3142 	write_regvals(sd, init_fx2, ARRAY_SIZE(init_fx2));
3143 }
3144 
3145 /* set the mode */
3146 /* This function works for ov7660 only */
3147 static void ov519_set_mode(struct sd *sd)
3148 {
3149 	static const struct ov_regvals bridge_ov7660[2][10] = {
3150 		{{0x10, 0x14}, {0x11, 0x1e}, {0x12, 0x00}, {0x13, 0x00},
3151 		 {0x14, 0x00}, {0x15, 0x00}, {0x16, 0x00}, {0x20, 0x0c},
3152 		 {0x25, 0x01}, {0x26, 0x00}},
3153 		{{0x10, 0x28}, {0x11, 0x3c}, {0x12, 0x00}, {0x13, 0x00},
3154 		 {0x14, 0x00}, {0x15, 0x00}, {0x16, 0x00}, {0x20, 0x0c},
3155 		 {0x25, 0x03}, {0x26, 0x00}}
3156 	};
3157 	static const struct ov_i2c_regvals sensor_ov7660[2][3] = {
3158 		{{0x12, 0x00}, {0x24, 0x00}, {0x0c, 0x0c}},
3159 		{{0x12, 0x00}, {0x04, 0x00}, {0x0c, 0x00}}
3160 	};
3161 	static const struct ov_i2c_regvals sensor_ov7660_2[] = {
3162 		{OV7670_R17_HSTART, 0x13},
3163 		{OV7670_R18_HSTOP, 0x01},
3164 		{OV7670_R32_HREF, 0x92},
3165 		{OV7670_R19_VSTART, 0x02},
3166 		{OV7670_R1A_VSTOP, 0x7a},
3167 		{OV7670_R03_VREF, 0x00},
3168 /*		{0x33, 0x00}, */
3169 /*		{0x34, 0x07}, */
3170 /*		{0x36, 0x00}, */
3171 /*		{0x6b, 0x0a}, */
3172 	};
3173 
3174 	write_regvals(sd, bridge_ov7660[sd->gspca_dev.curr_mode],
3175 			ARRAY_SIZE(bridge_ov7660[0]));
3176 	write_i2c_regvals(sd, sensor_ov7660[sd->gspca_dev.curr_mode],
3177 			ARRAY_SIZE(sensor_ov7660[0]));
3178 	write_i2c_regvals(sd, sensor_ov7660_2,
3179 			ARRAY_SIZE(sensor_ov7660_2));
3180 }
3181 
3182 /* set the frame rate */
3183 /* This function works for sensors ov7640, ov7648 ov7660 and ov7670 only */
3184 static void ov519_set_fr(struct sd *sd)
3185 {
3186 	int fr;
3187 	u8 clock;
3188 	/* frame rate table with indices:
3189 	 *	- mode = 0: 320x240, 1: 640x480
3190 	 *	- fr rate = 0: 30, 1: 25, 2: 20, 3: 15, 4: 10, 5: 5
3191 	 *	- reg = 0: bridge a4, 1: bridge 23, 2: sensor 11 (clock)
3192 	 */
3193 	static const u8 fr_tb[2][6][3] = {
3194 		{{0x04, 0xff, 0x00},
3195 		 {0x04, 0x1f, 0x00},
3196 		 {0x04, 0x1b, 0x00},
3197 		 {0x04, 0x15, 0x00},
3198 		 {0x04, 0x09, 0x00},
3199 		 {0x04, 0x01, 0x00}},
3200 		{{0x0c, 0xff, 0x00},
3201 		 {0x0c, 0x1f, 0x00},
3202 		 {0x0c, 0x1b, 0x00},
3203 		 {0x04, 0xff, 0x01},
3204 		 {0x04, 0x1f, 0x01},
3205 		 {0x04, 0x1b, 0x01}},
3206 	};
3207 
3208 	if (frame_rate > 0)
3209 		sd->frame_rate = frame_rate;
3210 	if (sd->frame_rate >= 30)
3211 		fr = 0;
3212 	else if (sd->frame_rate >= 25)
3213 		fr = 1;
3214 	else if (sd->frame_rate >= 20)
3215 		fr = 2;
3216 	else if (sd->frame_rate >= 15)
3217 		fr = 3;
3218 	else if (sd->frame_rate >= 10)
3219 		fr = 4;
3220 	else
3221 		fr = 5;
3222 	reg_w(sd, 0xa4, fr_tb[sd->gspca_dev.curr_mode][fr][0]);
3223 	reg_w(sd, 0x23, fr_tb[sd->gspca_dev.curr_mode][fr][1]);
3224 	clock = fr_tb[sd->gspca_dev.curr_mode][fr][2];
3225 	if (sd->sensor == SEN_OV7660)
3226 		clock |= 0x80;		/* enable double clock */
3227 	ov518_i2c_w(sd, OV7670_R11_CLKRC, clock);
3228 }
3229 
3230 static void setautogain(struct gspca_dev *gspca_dev, s32 val)
3231 {
3232 	struct sd *sd = (struct sd *) gspca_dev;
3233 
3234 	i2c_w_mask(sd, 0x13, val ? 0x05 : 0x00, 0x05);
3235 }
3236 
3237 /* this function is called at probe time */
3238 static int sd_config(struct gspca_dev *gspca_dev,
3239 			const struct usb_device_id *id)
3240 {
3241 	struct sd *sd = (struct sd *) gspca_dev;
3242 	struct cam *cam = &gspca_dev->cam;
3243 
3244 	sd->bridge = id->driver_info & BRIDGE_MASK;
3245 	sd->invert_led = (id->driver_info & BRIDGE_INVERT_LED) != 0;
3246 
3247 	switch (sd->bridge) {
3248 	case BRIDGE_OV511:
3249 	case BRIDGE_OV511PLUS:
3250 		cam->cam_mode = ov511_vga_mode;
3251 		cam->nmodes = ARRAY_SIZE(ov511_vga_mode);
3252 		break;
3253 	case BRIDGE_OV518:
3254 	case BRIDGE_OV518PLUS:
3255 		cam->cam_mode = ov518_vga_mode;
3256 		cam->nmodes = ARRAY_SIZE(ov518_vga_mode);
3257 		break;
3258 	case BRIDGE_OV519:
3259 		cam->cam_mode = ov519_vga_mode;
3260 		cam->nmodes = ARRAY_SIZE(ov519_vga_mode);
3261 		break;
3262 	case BRIDGE_OVFX2:
3263 		cam->cam_mode = ov519_vga_mode;
3264 		cam->nmodes = ARRAY_SIZE(ov519_vga_mode);
3265 		cam->bulk_size = OVFX2_BULK_SIZE;
3266 		cam->bulk_nurbs = MAX_NURBS;
3267 		cam->bulk = 1;
3268 		break;
3269 	case BRIDGE_W9968CF:
3270 		cam->cam_mode = w9968cf_vga_mode;
3271 		cam->nmodes = ARRAY_SIZE(w9968cf_vga_mode);
3272 		break;
3273 	}
3274 
3275 	sd->frame_rate = 15;
3276 
3277 	return 0;
3278 }
3279 
3280 /* this function is called at probe and resume time */
3281 static int sd_init(struct gspca_dev *gspca_dev)
3282 {
3283 	struct sd *sd = (struct sd *) gspca_dev;
3284 	struct cam *cam = &gspca_dev->cam;
3285 
3286 	switch (sd->bridge) {
3287 	case BRIDGE_OV511:
3288 	case BRIDGE_OV511PLUS:
3289 		ov511_configure(gspca_dev);
3290 		break;
3291 	case BRIDGE_OV518:
3292 	case BRIDGE_OV518PLUS:
3293 		ov518_configure(gspca_dev);
3294 		break;
3295 	case BRIDGE_OV519:
3296 		ov519_configure(sd);
3297 		break;
3298 	case BRIDGE_OVFX2:
3299 		ovfx2_configure(sd);
3300 		break;
3301 	case BRIDGE_W9968CF:
3302 		w9968cf_configure(sd);
3303 		break;
3304 	}
3305 
3306 	/* The OV519 must be more aggressive about sensor detection since
3307 	 * I2C write will never fail if the sensor is not present. We have
3308 	 * to try to initialize the sensor to detect its presence */
3309 	sd->sensor = -1;
3310 
3311 	/* Test for 76xx */
3312 	if (init_ov_sensor(sd, OV7xx0_SID) >= 0) {
3313 		ov7xx0_configure(sd);
3314 
3315 	/* Test for 6xx0 */
3316 	} else if (init_ov_sensor(sd, OV6xx0_SID) >= 0) {
3317 		ov6xx0_configure(sd);
3318 
3319 	/* Test for 8xx0 */
3320 	} else if (init_ov_sensor(sd, OV8xx0_SID) >= 0) {
3321 		ov8xx0_configure(sd);
3322 
3323 	/* Test for 3xxx / 2xxx */
3324 	} else if (init_ov_sensor(sd, OV_HIRES_SID) >= 0) {
3325 		ov_hires_configure(sd);
3326 	} else {
3327 		PERR("Can't determine sensor slave IDs\n");
3328 		goto error;
3329 	}
3330 
3331 	if (sd->sensor < 0)
3332 		goto error;
3333 
3334 	ov51x_led_control(sd, 0);	/* turn LED off */
3335 
3336 	switch (sd->bridge) {
3337 	case BRIDGE_OV511:
3338 	case BRIDGE_OV511PLUS:
3339 		if (sd->sif) {
3340 			cam->cam_mode = ov511_sif_mode;
3341 			cam->nmodes = ARRAY_SIZE(ov511_sif_mode);
3342 		}
3343 		break;
3344 	case BRIDGE_OV518:
3345 	case BRIDGE_OV518PLUS:
3346 		if (sd->sif) {
3347 			cam->cam_mode = ov518_sif_mode;
3348 			cam->nmodes = ARRAY_SIZE(ov518_sif_mode);
3349 		}
3350 		break;
3351 	case BRIDGE_OV519:
3352 		if (sd->sif) {
3353 			cam->cam_mode = ov519_sif_mode;
3354 			cam->nmodes = ARRAY_SIZE(ov519_sif_mode);
3355 		}
3356 		break;
3357 	case BRIDGE_OVFX2:
3358 		switch (sd->sensor) {
3359 		case SEN_OV2610:
3360 		case SEN_OV2610AE:
3361 			cam->cam_mode = ovfx2_ov2610_mode;
3362 			cam->nmodes = ARRAY_SIZE(ovfx2_ov2610_mode);
3363 			break;
3364 		case SEN_OV3610:
3365 			cam->cam_mode = ovfx2_ov3610_mode;
3366 			cam->nmodes = ARRAY_SIZE(ovfx2_ov3610_mode);
3367 			break;
3368 		case SEN_OV9600:
3369 			cam->cam_mode = ovfx2_ov9600_mode;
3370 			cam->nmodes = ARRAY_SIZE(ovfx2_ov9600_mode);
3371 			break;
3372 		default:
3373 			if (sd->sif) {
3374 				cam->cam_mode = ov519_sif_mode;
3375 				cam->nmodes = ARRAY_SIZE(ov519_sif_mode);
3376 			}
3377 			break;
3378 		}
3379 		break;
3380 	case BRIDGE_W9968CF:
3381 		if (sd->sif)
3382 			cam->nmodes = ARRAY_SIZE(w9968cf_vga_mode) - 1;
3383 
3384 		/* w9968cf needs initialisation once the sensor is known */
3385 		w9968cf_init(sd);
3386 		break;
3387 	}
3388 
3389 	/* initialize the sensor */
3390 	switch (sd->sensor) {
3391 	case SEN_OV2610:
3392 		write_i2c_regvals(sd, norm_2610, ARRAY_SIZE(norm_2610));
3393 
3394 		/* Enable autogain, autoexpo, awb, bandfilter */
3395 		i2c_w_mask(sd, 0x13, 0x27, 0x27);
3396 		break;
3397 	case SEN_OV2610AE:
3398 		write_i2c_regvals(sd, norm_2610ae, ARRAY_SIZE(norm_2610ae));
3399 
3400 		/* enable autoexpo */
3401 		i2c_w_mask(sd, 0x13, 0x05, 0x05);
3402 		break;
3403 	case SEN_OV3610:
3404 		write_i2c_regvals(sd, norm_3620b, ARRAY_SIZE(norm_3620b));
3405 
3406 		/* Enable autogain, autoexpo, awb, bandfilter */
3407 		i2c_w_mask(sd, 0x13, 0x27, 0x27);
3408 		break;
3409 	case SEN_OV6620:
3410 		write_i2c_regvals(sd, norm_6x20, ARRAY_SIZE(norm_6x20));
3411 		break;
3412 	case SEN_OV6630:
3413 	case SEN_OV66308AF:
3414 		write_i2c_regvals(sd, norm_6x30, ARRAY_SIZE(norm_6x30));
3415 		break;
3416 	default:
3417 /*	case SEN_OV7610: */
3418 /*	case SEN_OV76BE: */
3419 		write_i2c_regvals(sd, norm_7610, ARRAY_SIZE(norm_7610));
3420 		i2c_w_mask(sd, 0x0e, 0x00, 0x40);
3421 		break;
3422 	case SEN_OV7620:
3423 	case SEN_OV7620AE:
3424 		write_i2c_regvals(sd, norm_7620, ARRAY_SIZE(norm_7620));
3425 		break;
3426 	case SEN_OV7640:
3427 	case SEN_OV7648:
3428 		write_i2c_regvals(sd, norm_7640, ARRAY_SIZE(norm_7640));
3429 		break;
3430 	case SEN_OV7660:
3431 		i2c_w(sd, OV7670_R12_COM7, OV7670_COM7_RESET);
3432 		msleep(14);
3433 		reg_w(sd, OV519_R57_SNAPSHOT, 0x23);
3434 		write_regvals(sd, init_519_ov7660,
3435 				ARRAY_SIZE(init_519_ov7660));
3436 		write_i2c_regvals(sd, norm_7660, ARRAY_SIZE(norm_7660));
3437 		sd->gspca_dev.curr_mode = 1;	/* 640x480 */
3438 		ov519_set_mode(sd);
3439 		ov519_set_fr(sd);
3440 		sd_reset_snapshot(gspca_dev);
3441 		ov51x_restart(sd);
3442 		ov51x_stop(sd);			/* not in win traces */
3443 		ov51x_led_control(sd, 0);
3444 		break;
3445 	case SEN_OV7670:
3446 		write_i2c_regvals(sd, norm_7670, ARRAY_SIZE(norm_7670));
3447 		break;
3448 	case SEN_OV8610:
3449 		write_i2c_regvals(sd, norm_8610, ARRAY_SIZE(norm_8610));
3450 		break;
3451 	case SEN_OV9600:
3452 		write_i2c_regvals(sd, norm_9600, ARRAY_SIZE(norm_9600));
3453 
3454 		/* enable autoexpo */
3455 /*		i2c_w_mask(sd, 0x13, 0x05, 0x05); */
3456 		break;
3457 	}
3458 	return gspca_dev->usb_err;
3459 error:
3460 	PERR("OV519 Config failed");
3461 	return -EINVAL;
3462 }
3463 
3464 /* function called at start time before URB creation */
3465 static int sd_isoc_init(struct gspca_dev *gspca_dev)
3466 {
3467 	struct sd *sd = (struct sd *) gspca_dev;
3468 
3469 	switch (sd->bridge) {
3470 	case BRIDGE_OVFX2:
3471 		if (gspca_dev->pixfmt.width != 800)
3472 			gspca_dev->cam.bulk_size = OVFX2_BULK_SIZE;
3473 		else
3474 			gspca_dev->cam.bulk_size = 7 * 4096;
3475 		break;
3476 	}
3477 	return 0;
3478 }
3479 
3480 /* Set up the OV511/OV511+ with the given image parameters.
3481  *
3482  * Do not put any sensor-specific code in here (including I2C I/O functions)
3483  */
3484 static void ov511_mode_init_regs(struct sd *sd)
3485 {
3486 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
3487 	int hsegs, vsegs, packet_size, fps, needed;
3488 	int interlaced = 0;
3489 	struct usb_host_interface *alt;
3490 	struct usb_interface *intf;
3491 
3492 	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
3493 	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
3494 	if (!alt) {
3495 		PERR("Couldn't get altsetting\n");
3496 		sd->gspca_dev.usb_err = -EIO;
3497 		return;
3498 	}
3499 
3500 	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
3501 	reg_w(sd, R51x_FIFO_PSIZE, packet_size >> 5);
3502 
3503 	reg_w(sd, R511_CAM_UV_EN, 0x01);
3504 	reg_w(sd, R511_SNAP_UV_EN, 0x01);
3505 	reg_w(sd, R511_SNAP_OPTS, 0x03);
3506 
3507 	/* Here I'm assuming that snapshot size == image size.
3508 	 * I hope that's always true. --claudio
3509 	 */
3510 	hsegs = (sd->gspca_dev.pixfmt.width >> 3) - 1;
3511 	vsegs = (sd->gspca_dev.pixfmt.height >> 3) - 1;
3512 
3513 	reg_w(sd, R511_CAM_PXCNT, hsegs);
3514 	reg_w(sd, R511_CAM_LNCNT, vsegs);
3515 	reg_w(sd, R511_CAM_PXDIV, 0x00);
3516 	reg_w(sd, R511_CAM_LNDIV, 0x00);
3517 
3518 	/* YUV420, low pass filter on */
3519 	reg_w(sd, R511_CAM_OPTS, 0x03);
3520 
3521 	/* Snapshot additions */
3522 	reg_w(sd, R511_SNAP_PXCNT, hsegs);
3523 	reg_w(sd, R511_SNAP_LNCNT, vsegs);
3524 	reg_w(sd, R511_SNAP_PXDIV, 0x00);
3525 	reg_w(sd, R511_SNAP_LNDIV, 0x00);
3526 
3527 	/******** Set the framerate ********/
3528 	if (frame_rate > 0)
3529 		sd->frame_rate = frame_rate;
3530 
3531 	switch (sd->sensor) {
3532 	case SEN_OV6620:
3533 		/* No framerate control, doesn't like higher rates yet */
3534 		sd->clockdiv = 3;
3535 		break;
3536 
3537 	/* Note once the FIXME's in mode_init_ov_sensor_regs() are fixed
3538 	   for more sensors we need to do this for them too */
3539 	case SEN_OV7620:
3540 	case SEN_OV7620AE:
3541 	case SEN_OV7640:
3542 	case SEN_OV7648:
3543 	case SEN_OV76BE:
3544 		if (sd->gspca_dev.pixfmt.width == 320)
3545 			interlaced = 1;
3546 		/* Fall through */
3547 	case SEN_OV6630:
3548 	case SEN_OV7610:
3549 	case SEN_OV7670:
3550 		switch (sd->frame_rate) {
3551 		case 30:
3552 		case 25:
3553 			/* Not enough bandwidth to do 640x480 @ 30 fps */
3554 			if (sd->gspca_dev.pixfmt.width != 640) {
3555 				sd->clockdiv = 0;
3556 				break;
3557 			}
3558 			/* Fall through for 640x480 case */
3559 		default:
3560 /*		case 20: */
3561 /*		case 15: */
3562 			sd->clockdiv = 1;
3563 			break;
3564 		case 10:
3565 			sd->clockdiv = 2;
3566 			break;
3567 		case 5:
3568 			sd->clockdiv = 5;
3569 			break;
3570 		}
3571 		if (interlaced) {
3572 			sd->clockdiv = (sd->clockdiv + 1) * 2 - 1;
3573 			/* Higher then 10 does not work */
3574 			if (sd->clockdiv > 10)
3575 				sd->clockdiv = 10;
3576 		}
3577 		break;
3578 
3579 	case SEN_OV8610:
3580 		/* No framerate control ?? */
3581 		sd->clockdiv = 0;
3582 		break;
3583 	}
3584 
3585 	/* Check if we have enough bandwidth to disable compression */
3586 	fps = (interlaced ? 60 : 30) / (sd->clockdiv + 1) + 1;
3587 	needed = fps * sd->gspca_dev.pixfmt.width *
3588 			sd->gspca_dev.pixfmt.height * 3 / 2;
3589 	/* 1000 isoc packets/sec */
3590 	if (needed > 1000 * packet_size) {
3591 		/* Enable Y and UV quantization and compression */
3592 		reg_w(sd, R511_COMP_EN, 0x07);
3593 		reg_w(sd, R511_COMP_LUT_EN, 0x03);
3594 	} else {
3595 		reg_w(sd, R511_COMP_EN, 0x06);
3596 		reg_w(sd, R511_COMP_LUT_EN, 0x00);
3597 	}
3598 
3599 	reg_w(sd, R51x_SYS_RESET, OV511_RESET_OMNICE);
3600 	reg_w(sd, R51x_SYS_RESET, 0);
3601 }
3602 
3603 /* Sets up the OV518/OV518+ with the given image parameters
3604  *
3605  * OV518 needs a completely different approach, until we can figure out what
3606  * the individual registers do. Also, only 15 FPS is supported now.
3607  *
3608  * Do not put any sensor-specific code in here (including I2C I/O functions)
3609  */
3610 static void ov518_mode_init_regs(struct sd *sd)
3611 {
3612 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
3613 	int hsegs, vsegs, packet_size;
3614 	struct usb_host_interface *alt;
3615 	struct usb_interface *intf;
3616 
3617 	intf = usb_ifnum_to_if(sd->gspca_dev.dev, sd->gspca_dev.iface);
3618 	alt = usb_altnum_to_altsetting(intf, sd->gspca_dev.alt);
3619 	if (!alt) {
3620 		PERR("Couldn't get altsetting\n");
3621 		sd->gspca_dev.usb_err = -EIO;
3622 		return;
3623 	}
3624 
3625 	packet_size = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
3626 	ov518_reg_w32(sd, R51x_FIFO_PSIZE, packet_size & ~7, 2);
3627 
3628 	/******** Set the mode ********/
3629 	reg_w(sd, 0x2b, 0);
3630 	reg_w(sd, 0x2c, 0);
3631 	reg_w(sd, 0x2d, 0);
3632 	reg_w(sd, 0x2e, 0);
3633 	reg_w(sd, 0x3b, 0);
3634 	reg_w(sd, 0x3c, 0);
3635 	reg_w(sd, 0x3d, 0);
3636 	reg_w(sd, 0x3e, 0);
3637 
3638 	if (sd->bridge == BRIDGE_OV518) {
3639 		/* Set 8-bit (YVYU) input format */
3640 		reg_w_mask(sd, 0x20, 0x08, 0x08);
3641 
3642 		/* Set 12-bit (4:2:0) output format */
3643 		reg_w_mask(sd, 0x28, 0x80, 0xf0);
3644 		reg_w_mask(sd, 0x38, 0x80, 0xf0);
3645 	} else {
3646 		reg_w(sd, 0x28, 0x80);
3647 		reg_w(sd, 0x38, 0x80);
3648 	}
3649 
3650 	hsegs = sd->gspca_dev.pixfmt.width / 16;
3651 	vsegs = sd->gspca_dev.pixfmt.height / 4;
3652 
3653 	reg_w(sd, 0x29, hsegs);
3654 	reg_w(sd, 0x2a, vsegs);
3655 
3656 	reg_w(sd, 0x39, hsegs);
3657 	reg_w(sd, 0x3a, vsegs);
3658 
3659 	/* Windows driver does this here; who knows why */
3660 	reg_w(sd, 0x2f, 0x80);
3661 
3662 	/******** Set the framerate ********/
3663 	if (sd->bridge == BRIDGE_OV518PLUS && sd->revision == 0 &&
3664 					      sd->sensor == SEN_OV7620AE)
3665 		sd->clockdiv = 0;
3666 	else
3667 		sd->clockdiv = 1;
3668 
3669 	/* Mode independent, but framerate dependent, regs */
3670 	/* 0x51: Clock divider; Only works on some cams which use 2 crystals */
3671 	reg_w(sd, 0x51, 0x04);
3672 	reg_w(sd, 0x22, 0x18);
3673 	reg_w(sd, 0x23, 0xff);
3674 
3675 	if (sd->bridge == BRIDGE_OV518PLUS) {
3676 		switch (sd->sensor) {
3677 		case SEN_OV7620AE:
3678 			/*
3679 			 * HdG: 640x480 needs special handling on device
3680 			 * revision 2, we check for device revison > 0 to
3681 			 * avoid regressions, as we don't know the correct
3682 			 * thing todo for revision 1.
3683 			 *
3684 			 * Also this likely means we don't need to
3685 			 * differentiate between the OV7620 and OV7620AE,
3686 			 * earlier testing hitting this same problem likely
3687 			 * happened to be with revision < 2 cams using an
3688 			 * OV7620 and revision 2 cams using an OV7620AE.
3689 			 */
3690 			if (sd->revision > 0 &&
3691 					sd->gspca_dev.pixfmt.width == 640) {
3692 				reg_w(sd, 0x20, 0x60);
3693 				reg_w(sd, 0x21, 0x1f);
3694 			} else {
3695 				reg_w(sd, 0x20, 0x00);
3696 				reg_w(sd, 0x21, 0x19);
3697 			}
3698 			break;
3699 		case SEN_OV7620:
3700 			reg_w(sd, 0x20, 0x00);
3701 			reg_w(sd, 0x21, 0x19);
3702 			break;
3703 		default:
3704 			reg_w(sd, 0x21, 0x19);
3705 		}
3706 	} else
3707 		reg_w(sd, 0x71, 0x17);	/* Compression-related? */
3708 
3709 	/* FIXME: Sensor-specific */
3710 	/* Bit 5 is what matters here. Of course, it is "reserved" */
3711 	i2c_w(sd, 0x54, 0x23);
3712 
3713 	reg_w(sd, 0x2f, 0x80);
3714 
3715 	if (sd->bridge == BRIDGE_OV518PLUS) {
3716 		reg_w(sd, 0x24, 0x94);
3717 		reg_w(sd, 0x25, 0x90);
3718 		ov518_reg_w32(sd, 0xc4,    400, 2);	/* 190h   */
3719 		ov518_reg_w32(sd, 0xc6,    540, 2);	/* 21ch   */
3720 		ov518_reg_w32(sd, 0xc7,    540, 2);	/* 21ch   */
3721 		ov518_reg_w32(sd, 0xc8,    108, 2);	/* 6ch    */
3722 		ov518_reg_w32(sd, 0xca, 131098, 3);	/* 2001ah */
3723 		ov518_reg_w32(sd, 0xcb,    532, 2);	/* 214h   */
3724 		ov518_reg_w32(sd, 0xcc,   2400, 2);	/* 960h   */
3725 		ov518_reg_w32(sd, 0xcd,     32, 2);	/* 20h    */
3726 		ov518_reg_w32(sd, 0xce,    608, 2);	/* 260h   */
3727 	} else {
3728 		reg_w(sd, 0x24, 0x9f);
3729 		reg_w(sd, 0x25, 0x90);
3730 		ov518_reg_w32(sd, 0xc4,    400, 2);	/* 190h   */
3731 		ov518_reg_w32(sd, 0xc6,    381, 2);	/* 17dh   */
3732 		ov518_reg_w32(sd, 0xc7,    381, 2);	/* 17dh   */
3733 		ov518_reg_w32(sd, 0xc8,    128, 2);	/* 80h    */
3734 		ov518_reg_w32(sd, 0xca, 183331, 3);	/* 2cc23h */
3735 		ov518_reg_w32(sd, 0xcb,    746, 2);	/* 2eah   */
3736 		ov518_reg_w32(sd, 0xcc,   1750, 2);	/* 6d6h   */
3737 		ov518_reg_w32(sd, 0xcd,     45, 2);	/* 2dh    */
3738 		ov518_reg_w32(sd, 0xce,    851, 2);	/* 353h   */
3739 	}
3740 
3741 	reg_w(sd, 0x2f, 0x80);
3742 }
3743 
3744 /* Sets up the OV519 with the given image parameters
3745  *
3746  * OV519 needs a completely different approach, until we can figure out what
3747  * the individual registers do.
3748  *
3749  * Do not put any sensor-specific code in here (including I2C I/O functions)
3750  */
3751 static void ov519_mode_init_regs(struct sd *sd)
3752 {
3753 	static const struct ov_regvals mode_init_519_ov7670[] = {
3754 		{ 0x5d,	0x03 }, /* Turn off suspend mode */
3755 		{ 0x53,	0x9f }, /* was 9b in 1.65-1.08 */
3756 		{ OV519_R54_EN_CLK1, 0x0f }, /* bit2 (jpeg enable) */
3757 		{ 0xa2,	0x20 }, /* a2-a5 are undocumented */
3758 		{ 0xa3,	0x18 },
3759 		{ 0xa4,	0x04 },
3760 		{ 0xa5,	0x28 },
3761 		{ 0x37,	0x00 },	/* SetUsbInit */
3762 		{ 0x55,	0x02 }, /* 4.096 Mhz audio clock */
3763 		/* Enable both fields, YUV Input, disable defect comp (why?) */
3764 		{ 0x20,	0x0c },
3765 		{ 0x21,	0x38 },
3766 		{ 0x22,	0x1d },
3767 		{ 0x17,	0x50 }, /* undocumented */
3768 		{ 0x37,	0x00 }, /* undocumented */
3769 		{ 0x40,	0xff }, /* I2C timeout counter */
3770 		{ 0x46,	0x00 }, /* I2C clock prescaler */
3771 		{ 0x59,	0x04 },	/* new from windrv 090403 */
3772 		{ 0xff,	0x00 }, /* undocumented */
3773 		/* windows reads 0x55 at this point, why? */
3774 	};
3775 
3776 	static const struct ov_regvals mode_init_519[] = {
3777 		{ 0x5d,	0x03 }, /* Turn off suspend mode */
3778 		{ 0x53,	0x9f }, /* was 9b in 1.65-1.08 */
3779 		{ OV519_R54_EN_CLK1, 0x0f }, /* bit2 (jpeg enable) */
3780 		{ 0xa2,	0x20 }, /* a2-a5 are undocumented */
3781 		{ 0xa3,	0x18 },
3782 		{ 0xa4,	0x04 },
3783 		{ 0xa5,	0x28 },
3784 		{ 0x37,	0x00 },	/* SetUsbInit */
3785 		{ 0x55,	0x02 }, /* 4.096 Mhz audio clock */
3786 		/* Enable both fields, YUV Input, disable defect comp (why?) */
3787 		{ 0x22,	0x1d },
3788 		{ 0x17,	0x50 }, /* undocumented */
3789 		{ 0x37,	0x00 }, /* undocumented */
3790 		{ 0x40,	0xff }, /* I2C timeout counter */
3791 		{ 0x46,	0x00 }, /* I2C clock prescaler */
3792 		{ 0x59,	0x04 },	/* new from windrv 090403 */
3793 		{ 0xff,	0x00 }, /* undocumented */
3794 		/* windows reads 0x55 at this point, why? */
3795 	};
3796 
3797 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
3798 
3799 	/******** Set the mode ********/
3800 	switch (sd->sensor) {
3801 	default:
3802 		write_regvals(sd, mode_init_519, ARRAY_SIZE(mode_init_519));
3803 		if (sd->sensor == SEN_OV7640 ||
3804 		    sd->sensor == SEN_OV7648) {
3805 			/* Select 8-bit input mode */
3806 			reg_w_mask(sd, OV519_R20_DFR, 0x10, 0x10);
3807 		}
3808 		break;
3809 	case SEN_OV7660:
3810 		return;		/* done by ov519_set_mode/fr() */
3811 	case SEN_OV7670:
3812 		write_regvals(sd, mode_init_519_ov7670,
3813 				ARRAY_SIZE(mode_init_519_ov7670));
3814 		break;
3815 	}
3816 
3817 	reg_w(sd, OV519_R10_H_SIZE,	sd->gspca_dev.pixfmt.width >> 4);
3818 	reg_w(sd, OV519_R11_V_SIZE,	sd->gspca_dev.pixfmt.height >> 3);
3819 	if (sd->sensor == SEN_OV7670 &&
3820 	    sd->gspca_dev.cam.cam_mode[sd->gspca_dev.curr_mode].priv)
3821 		reg_w(sd, OV519_R12_X_OFFSETL, 0x04);
3822 	else if (sd->sensor == SEN_OV7648 &&
3823 	    sd->gspca_dev.cam.cam_mode[sd->gspca_dev.curr_mode].priv)
3824 		reg_w(sd, OV519_R12_X_OFFSETL, 0x01);
3825 	else
3826 		reg_w(sd, OV519_R12_X_OFFSETL, 0x00);
3827 	reg_w(sd, OV519_R13_X_OFFSETH,	0x00);
3828 	reg_w(sd, OV519_R14_Y_OFFSETL,	0x00);
3829 	reg_w(sd, OV519_R15_Y_OFFSETH,	0x00);
3830 	reg_w(sd, OV519_R16_DIVIDER,	0x00);
3831 	reg_w(sd, OV519_R25_FORMAT,	0x03); /* YUV422 */
3832 	reg_w(sd, 0x26,			0x00); /* Undocumented */
3833 
3834 	/******** Set the framerate ********/
3835 	if (frame_rate > 0)
3836 		sd->frame_rate = frame_rate;
3837 
3838 /* FIXME: These are only valid at the max resolution. */
3839 	sd->clockdiv = 0;
3840 	switch (sd->sensor) {
3841 	case SEN_OV7640:
3842 	case SEN_OV7648:
3843 		switch (sd->frame_rate) {
3844 		default:
3845 /*		case 30: */
3846 			reg_w(sd, 0xa4, 0x0c);
3847 			reg_w(sd, 0x23, 0xff);
3848 			break;
3849 		case 25:
3850 			reg_w(sd, 0xa4, 0x0c);
3851 			reg_w(sd, 0x23, 0x1f);
3852 			break;
3853 		case 20:
3854 			reg_w(sd, 0xa4, 0x0c);
3855 			reg_w(sd, 0x23, 0x1b);
3856 			break;
3857 		case 15:
3858 			reg_w(sd, 0xa4, 0x04);
3859 			reg_w(sd, 0x23, 0xff);
3860 			sd->clockdiv = 1;
3861 			break;
3862 		case 10:
3863 			reg_w(sd, 0xa4, 0x04);
3864 			reg_w(sd, 0x23, 0x1f);
3865 			sd->clockdiv = 1;
3866 			break;
3867 		case 5:
3868 			reg_w(sd, 0xa4, 0x04);
3869 			reg_w(sd, 0x23, 0x1b);
3870 			sd->clockdiv = 1;
3871 			break;
3872 		}
3873 		break;
3874 	case SEN_OV8610:
3875 		switch (sd->frame_rate) {
3876 		default:	/* 15 fps */
3877 /*		case 15: */
3878 			reg_w(sd, 0xa4, 0x06);
3879 			reg_w(sd, 0x23, 0xff);
3880 			break;
3881 		case 10:
3882 			reg_w(sd, 0xa4, 0x06);
3883 			reg_w(sd, 0x23, 0x1f);
3884 			break;
3885 		case 5:
3886 			reg_w(sd, 0xa4, 0x06);
3887 			reg_w(sd, 0x23, 0x1b);
3888 			break;
3889 		}
3890 		break;
3891 	case SEN_OV7670:		/* guesses, based on 7640 */
3892 		PDEBUG(D_STREAM, "Setting framerate to %d fps",
3893 				 (sd->frame_rate == 0) ? 15 : sd->frame_rate);
3894 		reg_w(sd, 0xa4, 0x10);
3895 		switch (sd->frame_rate) {
3896 		case 30:
3897 			reg_w(sd, 0x23, 0xff);
3898 			break;
3899 		case 20:
3900 			reg_w(sd, 0x23, 0x1b);
3901 			break;
3902 		default:
3903 /*		case 15: */
3904 			reg_w(sd, 0x23, 0xff);
3905 			sd->clockdiv = 1;
3906 			break;
3907 		}
3908 		break;
3909 	}
3910 }
3911 
3912 static void mode_init_ov_sensor_regs(struct sd *sd)
3913 {
3914 	struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
3915 	int qvga, xstart, xend, ystart, yend;
3916 	u8 v;
3917 
3918 	qvga = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 1;
3919 
3920 	/******** Mode (VGA/QVGA) and sensor specific regs ********/
3921 	switch (sd->sensor) {
3922 	case SEN_OV2610:
3923 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
3924 		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
3925 		i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a);
3926 		i2c_w(sd, 0x25, qvga ? 0x30 : 0x60);
3927 		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40);
3928 		i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0);
3929 		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20);
3930 		return;
3931 	case SEN_OV2610AE: {
3932 		u8 v;
3933 
3934 		/* frame rates:
3935 		 *	10fps / 5 fps for 1600x1200
3936 		 *	40fps / 20fps for 800x600
3937 		 */
3938 		v = 80;
3939 		if (qvga) {
3940 			if (sd->frame_rate < 25)
3941 				v = 0x81;
3942 		} else {
3943 			if (sd->frame_rate < 10)
3944 				v = 0x81;
3945 		}
3946 		i2c_w(sd, 0x11, v);
3947 		i2c_w(sd, 0x12, qvga ? 0x60 : 0x20);
3948 		return;
3949 	    }
3950 	case SEN_OV3610:
3951 		if (qvga) {
3952 			xstart = (1040 - gspca_dev->pixfmt.width) / 2 +
3953 				(0x1f << 4);
3954 			ystart = (776 - gspca_dev->pixfmt.height) / 2;
3955 		} else {
3956 			xstart = (2076 - gspca_dev->pixfmt.width) / 2 +
3957 				(0x10 << 4);
3958 			ystart = (1544 - gspca_dev->pixfmt.height) / 2;
3959 		}
3960 		xend = xstart + gspca_dev->pixfmt.width;
3961 		yend = ystart + gspca_dev->pixfmt.height;
3962 		/* Writing to the COMH register resets the other windowing regs
3963 		   to their default values, so we must do this first. */
3964 		i2c_w_mask(sd, 0x12, qvga ? 0x40 : 0x00, 0xf0);
3965 		i2c_w_mask(sd, 0x32,
3966 			   (((xend >> 1) & 7) << 3) | ((xstart >> 1) & 7),
3967 			   0x3f);
3968 		i2c_w_mask(sd, 0x03,
3969 			   (((yend >> 1) & 3) << 2) | ((ystart >> 1) & 3),
3970 			   0x0f);
3971 		i2c_w(sd, 0x17, xstart >> 4);
3972 		i2c_w(sd, 0x18, xend >> 4);
3973 		i2c_w(sd, 0x19, ystart >> 3);
3974 		i2c_w(sd, 0x1a, yend >> 3);
3975 		return;
3976 	case SEN_OV8610:
3977 		/* For OV8610 qvga means qsvga */
3978 		i2c_w_mask(sd, OV7610_REG_COM_C, qvga ? (1 << 5) : 0, 1 << 5);
3979 		i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */
3980 		i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */
3981 		i2c_w_mask(sd, 0x2d, 0x00, 0x40); /* from windrv 090403 */
3982 		i2c_w_mask(sd, 0x28, 0x20, 0x20); /* progressive mode on */
3983 		break;
3984 	case SEN_OV7610:
3985 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
3986 		i2c_w(sd, 0x35, qvga ? 0x1e : 0x9e);
3987 		i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */
3988 		i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */
3989 		break;
3990 	case SEN_OV7620:
3991 	case SEN_OV7620AE:
3992 	case SEN_OV76BE:
3993 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
3994 		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
3995 		i2c_w(sd, 0x24, qvga ? 0x20 : 0x3a);
3996 		i2c_w(sd, 0x25, qvga ? 0x30 : 0x60);
3997 		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40);
3998 		i2c_w_mask(sd, 0x67, qvga ? 0xb0 : 0x90, 0xf0);
3999 		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20);
4000 		i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */
4001 		i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */
4002 		if (sd->sensor == SEN_OV76BE)
4003 			i2c_w(sd, 0x35, qvga ? 0x1e : 0x9e);
4004 		break;
4005 	case SEN_OV7640:
4006 	case SEN_OV7648:
4007 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
4008 		i2c_w_mask(sd, 0x28, qvga ? 0x00 : 0x20, 0x20);
4009 		/* Setting this undocumented bit in qvga mode removes a very
4010 		   annoying vertical shaking of the image */
4011 		i2c_w_mask(sd, 0x2d, qvga ? 0x40 : 0x00, 0x40);
4012 		/* Unknown */
4013 		i2c_w_mask(sd, 0x67, qvga ? 0xf0 : 0x90, 0xf0);
4014 		/* Allow higher automatic gain (to allow higher framerates) */
4015 		i2c_w_mask(sd, 0x74, qvga ? 0x20 : 0x00, 0x20);
4016 		i2c_w_mask(sd, 0x12, 0x04, 0x04); /* AWB: 1 */
4017 		break;
4018 	case SEN_OV7670:
4019 		/* set COM7_FMT_VGA or COM7_FMT_QVGA
4020 		 * do we need to set anything else?
4021 		 *	HSTART etc are set in set_ov_sensor_window itself */
4022 		i2c_w_mask(sd, OV7670_R12_COM7,
4023 			 qvga ? OV7670_COM7_FMT_QVGA : OV7670_COM7_FMT_VGA,
4024 			 OV7670_COM7_FMT_MASK);
4025 		i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */
4026 		i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_AWB,
4027 				OV7670_COM8_AWB);
4028 		if (qvga) {		/* QVGA from ov7670.c by
4029 					 * Jonathan Corbet */
4030 			xstart = 164;
4031 			xend = 28;
4032 			ystart = 14;
4033 			yend = 494;
4034 		} else {		/* VGA */
4035 			xstart = 158;
4036 			xend = 14;
4037 			ystart = 10;
4038 			yend = 490;
4039 		}
4040 		/* OV7670 hardware window registers are split across
4041 		 * multiple locations */
4042 		i2c_w(sd, OV7670_R17_HSTART, xstart >> 3);
4043 		i2c_w(sd, OV7670_R18_HSTOP, xend >> 3);
4044 		v = i2c_r(sd, OV7670_R32_HREF);
4045 		v = (v & 0xc0) | ((xend & 0x7) << 3) | (xstart & 0x07);
4046 		msleep(10);	/* need to sleep between read and write to
4047 				 * same reg! */
4048 		i2c_w(sd, OV7670_R32_HREF, v);
4049 
4050 		i2c_w(sd, OV7670_R19_VSTART, ystart >> 2);
4051 		i2c_w(sd, OV7670_R1A_VSTOP, yend >> 2);
4052 		v = i2c_r(sd, OV7670_R03_VREF);
4053 		v = (v & 0xc0) | ((yend & 0x3) << 2) | (ystart & 0x03);
4054 		msleep(10);	/* need to sleep between read and write to
4055 				 * same reg! */
4056 		i2c_w(sd, OV7670_R03_VREF, v);
4057 		break;
4058 	case SEN_OV6620:
4059 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
4060 		i2c_w_mask(sd, 0x13, 0x00, 0x20); /* Select 16 bit data bus */
4061 		i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */
4062 		break;
4063 	case SEN_OV6630:
4064 	case SEN_OV66308AF:
4065 		i2c_w_mask(sd, 0x14, qvga ? 0x20 : 0x00, 0x20);
4066 		i2c_w_mask(sd, 0x12, 0x04, 0x06); /* AWB: 1 Test pattern: 0 */
4067 		break;
4068 	case SEN_OV9600: {
4069 		const struct ov_i2c_regvals *vals;
4070 		static const struct ov_i2c_regvals sxga_15[] = {
4071 			{0x11, 0x80}, {0x14, 0x3e}, {0x24, 0x85}, {0x25, 0x75}
4072 		};
4073 		static const struct ov_i2c_regvals sxga_7_5[] = {
4074 			{0x11, 0x81}, {0x14, 0x3e}, {0x24, 0x85}, {0x25, 0x75}
4075 		};
4076 		static const struct ov_i2c_regvals vga_30[] = {
4077 			{0x11, 0x81}, {0x14, 0x7e}, {0x24, 0x70}, {0x25, 0x60}
4078 		};
4079 		static const struct ov_i2c_regvals vga_15[] = {
4080 			{0x11, 0x83}, {0x14, 0x3e}, {0x24, 0x80}, {0x25, 0x70}
4081 		};
4082 
4083 		/* frame rates:
4084 		 *	15fps / 7.5 fps for 1280x1024
4085 		 *	30fps / 15fps for 640x480
4086 		 */
4087 		i2c_w_mask(sd, 0x12, qvga ? 0x40 : 0x00, 0x40);
4088 		if (qvga)
4089 			vals = sd->frame_rate < 30 ? vga_15 : vga_30;
4090 		else
4091 			vals = sd->frame_rate < 15 ? sxga_7_5 : sxga_15;
4092 		write_i2c_regvals(sd, vals, ARRAY_SIZE(sxga_15));
4093 		return;
4094 	    }
4095 	default:
4096 		return;
4097 	}
4098 
4099 	/******** Clock programming ********/
4100 	i2c_w(sd, 0x11, sd->clockdiv);
4101 }
4102 
4103 /* this function works for bridge ov519 and sensors ov7660 and ov7670 only */
4104 static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
4105 {
4106 	struct sd *sd = (struct sd *) gspca_dev;
4107 
4108 	if (sd->gspca_dev.streaming)
4109 		reg_w(sd, OV519_R51_RESET1, 0x0f);	/* block stream */
4110 	i2c_w_mask(sd, OV7670_R1E_MVFP,
4111 		OV7670_MVFP_MIRROR * hflip | OV7670_MVFP_VFLIP * vflip,
4112 		OV7670_MVFP_MIRROR | OV7670_MVFP_VFLIP);
4113 	if (sd->gspca_dev.streaming)
4114 		reg_w(sd, OV519_R51_RESET1, 0x00);	/* restart stream */
4115 }
4116 
4117 static void set_ov_sensor_window(struct sd *sd)
4118 {
4119 	struct gspca_dev *gspca_dev;
4120 	int qvga, crop;
4121 	int hwsbase, hwebase, vwsbase, vwebase, hwscale, vwscale;
4122 
4123 	/* mode setup is fully handled in mode_init_ov_sensor_regs for these */
4124 	switch (sd->sensor) {
4125 	case SEN_OV2610:
4126 	case SEN_OV2610AE:
4127 	case SEN_OV3610:
4128 	case SEN_OV7670:
4129 	case SEN_OV9600:
4130 		mode_init_ov_sensor_regs(sd);
4131 		return;
4132 	case SEN_OV7660:
4133 		ov519_set_mode(sd);
4134 		ov519_set_fr(sd);
4135 		return;
4136 	}
4137 
4138 	gspca_dev = &sd->gspca_dev;
4139 	qvga = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 1;
4140 	crop = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv & 2;
4141 
4142 	/* The different sensor ICs handle setting up of window differently.
4143 	 * IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!! */
4144 	switch (sd->sensor) {
4145 	case SEN_OV8610:
4146 		hwsbase = 0x1e;
4147 		hwebase = 0x1e;
4148 		vwsbase = 0x02;
4149 		vwebase = 0x02;
4150 		break;
4151 	case SEN_OV7610:
4152 	case SEN_OV76BE:
4153 		hwsbase = 0x38;
4154 		hwebase = 0x3a;
4155 		vwsbase = vwebase = 0x05;
4156 		break;
4157 	case SEN_OV6620:
4158 	case SEN_OV6630:
4159 	case SEN_OV66308AF:
4160 		hwsbase = 0x38;
4161 		hwebase = 0x3a;
4162 		vwsbase = 0x05;
4163 		vwebase = 0x06;
4164 		if (sd->sensor == SEN_OV66308AF && qvga)
4165 			/* HDG: this fixes U and V getting swapped */
4166 			hwsbase++;
4167 		if (crop) {
4168 			hwsbase += 8;
4169 			hwebase += 8;
4170 			vwsbase += 11;
4171 			vwebase += 11;
4172 		}
4173 		break;
4174 	case SEN_OV7620:
4175 	case SEN_OV7620AE:
4176 		hwsbase = 0x2f;		/* From 7620.SET (spec is wrong) */
4177 		hwebase = 0x2f;
4178 		vwsbase = vwebase = 0x05;
4179 		break;
4180 	case SEN_OV7640:
4181 	case SEN_OV7648:
4182 		hwsbase = 0x1a;
4183 		hwebase = 0x1a;
4184 		vwsbase = vwebase = 0x03;
4185 		break;
4186 	default:
4187 		return;
4188 	}
4189 
4190 	switch (sd->sensor) {
4191 	case SEN_OV6620:
4192 	case SEN_OV6630:
4193 	case SEN_OV66308AF:
4194 		if (qvga) {		/* QCIF */
4195 			hwscale = 0;
4196 			vwscale = 0;
4197 		} else {		/* CIF */
4198 			hwscale = 1;
4199 			vwscale = 1;	/* The datasheet says 0;
4200 					 * it's wrong */
4201 		}
4202 		break;
4203 	case SEN_OV8610:
4204 		if (qvga) {		/* QSVGA */
4205 			hwscale = 1;
4206 			vwscale = 1;
4207 		} else {		/* SVGA */
4208 			hwscale = 2;
4209 			vwscale = 2;
4210 		}
4211 		break;
4212 	default:			/* SEN_OV7xx0 */
4213 		if (qvga) {		/* QVGA */
4214 			hwscale = 1;
4215 			vwscale = 0;
4216 		} else {		/* VGA */
4217 			hwscale = 2;
4218 			vwscale = 1;
4219 		}
4220 	}
4221 
4222 	mode_init_ov_sensor_regs(sd);
4223 
4224 	i2c_w(sd, 0x17, hwsbase);
4225 	i2c_w(sd, 0x18, hwebase + (sd->sensor_width >> hwscale));
4226 	i2c_w(sd, 0x19, vwsbase);
4227 	i2c_w(sd, 0x1a, vwebase + (sd->sensor_height >> vwscale));
4228 }
4229 
4230 /* -- start the camera -- */
4231 static int sd_start(struct gspca_dev *gspca_dev)
4232 {
4233 	struct sd *sd = (struct sd *) gspca_dev;
4234 
4235 	/* Default for most bridges, allow bridge_mode_init_regs to override */
4236 	sd->sensor_width = sd->gspca_dev.pixfmt.width;
4237 	sd->sensor_height = sd->gspca_dev.pixfmt.height;
4238 
4239 	switch (sd->bridge) {
4240 	case BRIDGE_OV511:
4241 	case BRIDGE_OV511PLUS:
4242 		ov511_mode_init_regs(sd);
4243 		break;
4244 	case BRIDGE_OV518:
4245 	case BRIDGE_OV518PLUS:
4246 		ov518_mode_init_regs(sd);
4247 		break;
4248 	case BRIDGE_OV519:
4249 		ov519_mode_init_regs(sd);
4250 		break;
4251 	/* case BRIDGE_OVFX2: nothing to do */
4252 	case BRIDGE_W9968CF:
4253 		w9968cf_mode_init_regs(sd);
4254 		break;
4255 	}
4256 
4257 	set_ov_sensor_window(sd);
4258 
4259 	/* Force clear snapshot state in case the snapshot button was
4260 	   pressed while we weren't streaming */
4261 	sd->snapshot_needs_reset = 1;
4262 	sd_reset_snapshot(gspca_dev);
4263 
4264 	sd->first_frame = 3;
4265 
4266 	ov51x_restart(sd);
4267 	ov51x_led_control(sd, 1);
4268 	return gspca_dev->usb_err;
4269 }
4270 
4271 static void sd_stopN(struct gspca_dev *gspca_dev)
4272 {
4273 	struct sd *sd = (struct sd *) gspca_dev;
4274 
4275 	ov51x_stop(sd);
4276 	ov51x_led_control(sd, 0);
4277 }
4278 
4279 static void sd_stop0(struct gspca_dev *gspca_dev)
4280 {
4281 	struct sd *sd = (struct sd *) gspca_dev;
4282 
4283 	if (!sd->gspca_dev.present)
4284 		return;
4285 	if (sd->bridge == BRIDGE_W9968CF)
4286 		w9968cf_stop0(sd);
4287 
4288 #if IS_ENABLED(CONFIG_INPUT)
4289 	/* If the last button state is pressed, release it now! */
4290 	if (sd->snapshot_pressed) {
4291 		input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
4292 		input_sync(gspca_dev->input_dev);
4293 		sd->snapshot_pressed = 0;
4294 	}
4295 #endif
4296 	if (sd->bridge == BRIDGE_OV519)
4297 		reg_w(sd, OV519_R57_SNAPSHOT, 0x23);
4298 }
4299 
4300 static void ov51x_handle_button(struct gspca_dev *gspca_dev, u8 state)
4301 {
4302 	struct sd *sd = (struct sd *) gspca_dev;
4303 
4304 	if (sd->snapshot_pressed != state) {
4305 #if IS_ENABLED(CONFIG_INPUT)
4306 		input_report_key(gspca_dev->input_dev, KEY_CAMERA, state);
4307 		input_sync(gspca_dev->input_dev);
4308 #endif
4309 		if (state)
4310 			sd->snapshot_needs_reset = 1;
4311 
4312 		sd->snapshot_pressed = state;
4313 	} else {
4314 		/* On the ov511 / ov519 we need to reset the button state
4315 		   multiple times, as resetting does not work as long as the
4316 		   button stays pressed */
4317 		switch (sd->bridge) {
4318 		case BRIDGE_OV511:
4319 		case BRIDGE_OV511PLUS:
4320 		case BRIDGE_OV519:
4321 			if (state)
4322 				sd->snapshot_needs_reset = 1;
4323 			break;
4324 		}
4325 	}
4326 }
4327 
4328 static void ov511_pkt_scan(struct gspca_dev *gspca_dev,
4329 			u8 *in,			/* isoc packet */
4330 			int len)		/* iso packet length */
4331 {
4332 	struct sd *sd = (struct sd *) gspca_dev;
4333 
4334 	/* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th
4335 	 * byte non-zero. The EOF packet has image width/height in the
4336 	 * 10th and 11th bytes. The 9th byte is given as follows:
4337 	 *
4338 	 * bit 7: EOF
4339 	 *     6: compression enabled
4340 	 *     5: 422/420/400 modes
4341 	 *     4: 422/420/400 modes
4342 	 *     3: 1
4343 	 *     2: snapshot button on
4344 	 *     1: snapshot frame
4345 	 *     0: even/odd field
4346 	 */
4347 	if (!(in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) &&
4348 	    (in[8] & 0x08)) {
4349 		ov51x_handle_button(gspca_dev, (in[8] >> 2) & 1);
4350 		if (in[8] & 0x80) {
4351 			/* Frame end */
4352 			if ((in[9] + 1) * 8 != gspca_dev->pixfmt.width ||
4353 			    (in[10] + 1) * 8 != gspca_dev->pixfmt.height) {
4354 				PERR("Invalid frame size, got: %dx%d,"
4355 					" requested: %dx%d\n",
4356 					(in[9] + 1) * 8, (in[10] + 1) * 8,
4357 					gspca_dev->pixfmt.width,
4358 					gspca_dev->pixfmt.height);
4359 				gspca_dev->last_packet_type = DISCARD_PACKET;
4360 				return;
4361 			}
4362 			/* Add 11 byte footer to frame, might be useful */
4363 			gspca_frame_add(gspca_dev, LAST_PACKET, in, 11);
4364 			return;
4365 		} else {
4366 			/* Frame start */
4367 			gspca_frame_add(gspca_dev, FIRST_PACKET, in, 0);
4368 			sd->packet_nr = 0;
4369 		}
4370 	}
4371 
4372 	/* Ignore the packet number */
4373 	len--;
4374 
4375 	/* intermediate packet */
4376 	gspca_frame_add(gspca_dev, INTER_PACKET, in, len);
4377 }
4378 
4379 static void ov518_pkt_scan(struct gspca_dev *gspca_dev,
4380 			u8 *data,			/* isoc packet */
4381 			int len)			/* iso packet length */
4382 {
4383 	struct sd *sd = (struct sd *) gspca_dev;
4384 
4385 	/* A false positive here is likely, until OVT gives me
4386 	 * the definitive SOF/EOF format */
4387 	if ((!(data[0] | data[1] | data[2] | data[3] | data[5])) && data[6]) {
4388 		ov51x_handle_button(gspca_dev, (data[6] >> 1) & 1);
4389 		gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
4390 		gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
4391 		sd->packet_nr = 0;
4392 	}
4393 
4394 	if (gspca_dev->last_packet_type == DISCARD_PACKET)
4395 		return;
4396 
4397 	/* Does this device use packet numbers ? */
4398 	if (len & 7) {
4399 		len--;
4400 		if (sd->packet_nr == data[len])
4401 			sd->packet_nr++;
4402 		/* The last few packets of the frame (which are all 0's
4403 		   except that they may contain part of the footer), are
4404 		   numbered 0 */
4405 		else if (sd->packet_nr == 0 || data[len]) {
4406 			PERR("Invalid packet nr: %d (expect: %d)",
4407 				(int)data[len], (int)sd->packet_nr);
4408 			gspca_dev->last_packet_type = DISCARD_PACKET;
4409 			return;
4410 		}
4411 	}
4412 
4413 	/* intermediate packet */
4414 	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
4415 }
4416 
4417 static void ov519_pkt_scan(struct gspca_dev *gspca_dev,
4418 			u8 *data,			/* isoc packet */
4419 			int len)			/* iso packet length */
4420 {
4421 	/* Header of ov519 is 16 bytes:
4422 	 *     Byte     Value      Description
4423 	 *	0	0xff	magic
4424 	 *	1	0xff	magic
4425 	 *	2	0xff	magic
4426 	 *	3	0xXX	0x50 = SOF, 0x51 = EOF
4427 	 *	9	0xXX	0x01 initial frame without data,
4428 	 *			0x00 standard frame with image
4429 	 *	14	Lo	in EOF: length of image data / 8
4430 	 *	15	Hi
4431 	 */
4432 
4433 	if (data[0] == 0xff && data[1] == 0xff && data[2] == 0xff) {
4434 		switch (data[3]) {
4435 		case 0x50:		/* start of frame */
4436 			/* Don't check the button state here, as the state
4437 			   usually (always ?) changes at EOF and checking it
4438 			   here leads to unnecessary snapshot state resets. */
4439 #define HDRSZ 16
4440 			data += HDRSZ;
4441 			len -= HDRSZ;
4442 #undef HDRSZ
4443 			if (data[0] == 0xff || data[1] == 0xd8)
4444 				gspca_frame_add(gspca_dev, FIRST_PACKET,
4445 						data, len);
4446 			else
4447 				gspca_dev->last_packet_type = DISCARD_PACKET;
4448 			return;
4449 		case 0x51:		/* end of frame */
4450 			ov51x_handle_button(gspca_dev, data[11] & 1);
4451 			if (data[9] != 0)
4452 				gspca_dev->last_packet_type = DISCARD_PACKET;
4453 			gspca_frame_add(gspca_dev, LAST_PACKET,
4454 					NULL, 0);
4455 			return;
4456 		}
4457 	}
4458 
4459 	/* intermediate packet */
4460 	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
4461 }
4462 
4463 static void ovfx2_pkt_scan(struct gspca_dev *gspca_dev,
4464 			u8 *data,			/* isoc packet */
4465 			int len)			/* iso packet length */
4466 {
4467 	struct sd *sd = (struct sd *) gspca_dev;
4468 
4469 	gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
4470 
4471 	/* A short read signals EOF */
4472 	if (len < gspca_dev->cam.bulk_size) {
4473 		/* If the frame is short, and it is one of the first ones
4474 		   the sensor and bridge are still syncing, so drop it. */
4475 		if (sd->first_frame) {
4476 			sd->first_frame--;
4477 			if (gspca_dev->image_len <
4478 				  sd->gspca_dev.pixfmt.width *
4479 					sd->gspca_dev.pixfmt.height)
4480 				gspca_dev->last_packet_type = DISCARD_PACKET;
4481 		}
4482 		gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0);
4483 		gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
4484 	}
4485 }
4486 
4487 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
4488 			u8 *data,			/* isoc packet */
4489 			int len)			/* iso packet length */
4490 {
4491 	struct sd *sd = (struct sd *) gspca_dev;
4492 
4493 	switch (sd->bridge) {
4494 	case BRIDGE_OV511:
4495 	case BRIDGE_OV511PLUS:
4496 		ov511_pkt_scan(gspca_dev, data, len);
4497 		break;
4498 	case BRIDGE_OV518:
4499 	case BRIDGE_OV518PLUS:
4500 		ov518_pkt_scan(gspca_dev, data, len);
4501 		break;
4502 	case BRIDGE_OV519:
4503 		ov519_pkt_scan(gspca_dev, data, len);
4504 		break;
4505 	case BRIDGE_OVFX2:
4506 		ovfx2_pkt_scan(gspca_dev, data, len);
4507 		break;
4508 	case BRIDGE_W9968CF:
4509 		w9968cf_pkt_scan(gspca_dev, data, len);
4510 		break;
4511 	}
4512 }
4513 
4514 /* -- management routines -- */
4515 
4516 static void setbrightness(struct gspca_dev *gspca_dev, s32 val)
4517 {
4518 	struct sd *sd = (struct sd *) gspca_dev;
4519 	static const struct ov_i2c_regvals brit_7660[][7] = {
4520 		{{0x0f, 0x6a}, {0x24, 0x40}, {0x25, 0x2b}, {0x26, 0x90},
4521 			{0x27, 0xe0}, {0x28, 0xe0}, {0x2c, 0xe0}},
4522 		{{0x0f, 0x6a}, {0x24, 0x50}, {0x25, 0x40}, {0x26, 0xa1},
4523 			{0x27, 0xc0}, {0x28, 0xc0}, {0x2c, 0xc0}},
4524 		{{0x0f, 0x6a}, {0x24, 0x68}, {0x25, 0x58}, {0x26, 0xc2},
4525 			{0x27, 0xa0}, {0x28, 0xa0}, {0x2c, 0xa0}},
4526 		{{0x0f, 0x6a}, {0x24, 0x70}, {0x25, 0x68}, {0x26, 0xd3},
4527 			{0x27, 0x80}, {0x28, 0x80}, {0x2c, 0x80}},
4528 		{{0x0f, 0x6a}, {0x24, 0x80}, {0x25, 0x70}, {0x26, 0xd3},
4529 			{0x27, 0x20}, {0x28, 0x20}, {0x2c, 0x20}},
4530 		{{0x0f, 0x6a}, {0x24, 0x88}, {0x25, 0x78}, {0x26, 0xd3},
4531 			{0x27, 0x40}, {0x28, 0x40}, {0x2c, 0x40}},
4532 		{{0x0f, 0x6a}, {0x24, 0x90}, {0x25, 0x80}, {0x26, 0xd4},
4533 			{0x27, 0x60}, {0x28, 0x60}, {0x2c, 0x60}}
4534 	};
4535 
4536 	switch (sd->sensor) {
4537 	case SEN_OV8610:
4538 	case SEN_OV7610:
4539 	case SEN_OV76BE:
4540 	case SEN_OV6620:
4541 	case SEN_OV6630:
4542 	case SEN_OV66308AF:
4543 	case SEN_OV7640:
4544 	case SEN_OV7648:
4545 		i2c_w(sd, OV7610_REG_BRT, val);
4546 		break;
4547 	case SEN_OV7620:
4548 	case SEN_OV7620AE:
4549 		i2c_w(sd, OV7610_REG_BRT, val);
4550 		break;
4551 	case SEN_OV7660:
4552 		write_i2c_regvals(sd, brit_7660[val],
4553 				ARRAY_SIZE(brit_7660[0]));
4554 		break;
4555 	case SEN_OV7670:
4556 /*win trace
4557  *		i2c_w_mask(sd, OV7670_R13_COM8, 0, OV7670_COM8_AEC); */
4558 		i2c_w(sd, OV7670_R55_BRIGHT, ov7670_abs_to_sm(val));
4559 		break;
4560 	}
4561 }
4562 
4563 static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
4564 {
4565 	struct sd *sd = (struct sd *) gspca_dev;
4566 	static const struct ov_i2c_regvals contrast_7660[][31] = {
4567 		{{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf8}, {0x6f, 0xa0},
4568 		 {0x70, 0x58}, {0x71, 0x38}, {0x72, 0x30}, {0x73, 0x30},
4569 		 {0x74, 0x28}, {0x75, 0x28}, {0x76, 0x24}, {0x77, 0x24},
4570 		 {0x78, 0x22}, {0x79, 0x28}, {0x7a, 0x2a}, {0x7b, 0x34},
4571 		 {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3d}, {0x7f, 0x65},
4572 		 {0x80, 0x70}, {0x81, 0x77}, {0x82, 0x7d}, {0x83, 0x83},
4573 		 {0x84, 0x88}, {0x85, 0x8d}, {0x86, 0x96}, {0x87, 0x9f},
4574 		 {0x88, 0xb0}, {0x89, 0xc4}, {0x8a, 0xd9}},
4575 		{{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf8}, {0x6f, 0x94},
4576 		 {0x70, 0x58}, {0x71, 0x40}, {0x72, 0x30}, {0x73, 0x30},
4577 		 {0x74, 0x30}, {0x75, 0x30}, {0x76, 0x2c}, {0x77, 0x24},
4578 		 {0x78, 0x22}, {0x79, 0x28}, {0x7a, 0x2a}, {0x7b, 0x31},
4579 		 {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3d}, {0x7f, 0x62},
4580 		 {0x80, 0x6d}, {0x81, 0x75}, {0x82, 0x7b}, {0x83, 0x81},
4581 		 {0x84, 0x87}, {0x85, 0x8d}, {0x86, 0x98}, {0x87, 0xa1},
4582 		 {0x88, 0xb2}, {0x89, 0xc6}, {0x8a, 0xdb}},
4583 		{{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf0}, {0x6f, 0x84},
4584 		 {0x70, 0x58}, {0x71, 0x48}, {0x72, 0x40}, {0x73, 0x40},
4585 		 {0x74, 0x28}, {0x75, 0x28}, {0x76, 0x28}, {0x77, 0x24},
4586 		 {0x78, 0x26}, {0x79, 0x28}, {0x7a, 0x28}, {0x7b, 0x34},
4587 		 {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3c}, {0x7f, 0x5d},
4588 		 {0x80, 0x68}, {0x81, 0x71}, {0x82, 0x79}, {0x83, 0x81},
4589 		 {0x84, 0x86}, {0x85, 0x8b}, {0x86, 0x95}, {0x87, 0x9e},
4590 		 {0x88, 0xb1}, {0x89, 0xc5}, {0x8a, 0xd9}},
4591 		{{0x6c, 0xf0}, {0x6d, 0xf0}, {0x6e, 0xf0}, {0x6f, 0x70},
4592 		 {0x70, 0x58}, {0x71, 0x58}, {0x72, 0x48}, {0x73, 0x48},
4593 		 {0x74, 0x38}, {0x75, 0x40}, {0x76, 0x34}, {0x77, 0x34},
4594 		 {0x78, 0x2e}, {0x79, 0x28}, {0x7a, 0x24}, {0x7b, 0x22},
4595 		 {0x7c, 0x0f}, {0x7d, 0x1e}, {0x7e, 0x3c}, {0x7f, 0x58},
4596 		 {0x80, 0x63}, {0x81, 0x6e}, {0x82, 0x77}, {0x83, 0x80},
4597 		 {0x84, 0x87}, {0x85, 0x8f}, {0x86, 0x9c}, {0x87, 0xa9},
4598 		 {0x88, 0xc0}, {0x89, 0xd4}, {0x8a, 0xe6}},
4599 		{{0x6c, 0xa0}, {0x6d, 0xf0}, {0x6e, 0x90}, {0x6f, 0x80},
4600 		 {0x70, 0x70}, {0x71, 0x80}, {0x72, 0x60}, {0x73, 0x60},
4601 		 {0x74, 0x58}, {0x75, 0x60}, {0x76, 0x4c}, {0x77, 0x38},
4602 		 {0x78, 0x38}, {0x79, 0x2a}, {0x7a, 0x20}, {0x7b, 0x0e},
4603 		 {0x7c, 0x0a}, {0x7d, 0x14}, {0x7e, 0x26}, {0x7f, 0x46},
4604 		 {0x80, 0x54}, {0x81, 0x64}, {0x82, 0x70}, {0x83, 0x7c},
4605 		 {0x84, 0x87}, {0x85, 0x93}, {0x86, 0xa6}, {0x87, 0xb4},
4606 		 {0x88, 0xd0}, {0x89, 0xe5}, {0x8a, 0xf5}},
4607 		{{0x6c, 0x60}, {0x6d, 0x80}, {0x6e, 0x60}, {0x6f, 0x80},
4608 		 {0x70, 0x80}, {0x71, 0x80}, {0x72, 0x88}, {0x73, 0x30},
4609 		 {0x74, 0x70}, {0x75, 0x68}, {0x76, 0x64}, {0x77, 0x50},
4610 		 {0x78, 0x3c}, {0x79, 0x22}, {0x7a, 0x10}, {0x7b, 0x08},
4611 		 {0x7c, 0x06}, {0x7d, 0x0e}, {0x7e, 0x1a}, {0x7f, 0x3a},
4612 		 {0x80, 0x4a}, {0x81, 0x5a}, {0x82, 0x6b}, {0x83, 0x7b},
4613 		 {0x84, 0x89}, {0x85, 0x96}, {0x86, 0xaf}, {0x87, 0xc3},
4614 		 {0x88, 0xe1}, {0x89, 0xf2}, {0x8a, 0xfa}},
4615 		{{0x6c, 0x20}, {0x6d, 0x40}, {0x6e, 0x20}, {0x6f, 0x60},
4616 		 {0x70, 0x88}, {0x71, 0xc8}, {0x72, 0xc0}, {0x73, 0xb8},
4617 		 {0x74, 0xa8}, {0x75, 0xb8}, {0x76, 0x80}, {0x77, 0x5c},
4618 		 {0x78, 0x26}, {0x79, 0x10}, {0x7a, 0x08}, {0x7b, 0x04},
4619 		 {0x7c, 0x02}, {0x7d, 0x06}, {0x7e, 0x0a}, {0x7f, 0x22},
4620 		 {0x80, 0x33}, {0x81, 0x4c}, {0x82, 0x64}, {0x83, 0x7b},
4621 		 {0x84, 0x90}, {0x85, 0xa7}, {0x86, 0xc7}, {0x87, 0xde},
4622 		 {0x88, 0xf1}, {0x89, 0xf9}, {0x8a, 0xfd}},
4623 	};
4624 
4625 	switch (sd->sensor) {
4626 	case SEN_OV7610:
4627 	case SEN_OV6620:
4628 		i2c_w(sd, OV7610_REG_CNT, val);
4629 		break;
4630 	case SEN_OV6630:
4631 	case SEN_OV66308AF:
4632 		i2c_w_mask(sd, OV7610_REG_CNT, val >> 4, 0x0f);
4633 		break;
4634 	case SEN_OV8610: {
4635 		static const u8 ctab[] = {
4636 			0x03, 0x09, 0x0b, 0x0f, 0x53, 0x6f, 0x35, 0x7f
4637 		};
4638 
4639 		/* Use Y gamma control instead. Bit 0 enables it. */
4640 		i2c_w(sd, 0x64, ctab[val >> 5]);
4641 		break;
4642 	    }
4643 	case SEN_OV7620:
4644 	case SEN_OV7620AE: {
4645 		static const u8 ctab[] = {
4646 			0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57,
4647 			0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff
4648 		};
4649 
4650 		/* Use Y gamma control instead. Bit 0 enables it. */
4651 		i2c_w(sd, 0x64, ctab[val >> 4]);
4652 		break;
4653 	    }
4654 	case SEN_OV7660:
4655 		write_i2c_regvals(sd, contrast_7660[val],
4656 					ARRAY_SIZE(contrast_7660[0]));
4657 		break;
4658 	case SEN_OV7670:
4659 		/* check that this isn't just the same as ov7610 */
4660 		i2c_w(sd, OV7670_R56_CONTRAS, val >> 1);
4661 		break;
4662 	}
4663 }
4664 
4665 static void setexposure(struct gspca_dev *gspca_dev, s32 val)
4666 {
4667 	struct sd *sd = (struct sd *) gspca_dev;
4668 
4669 	i2c_w(sd, 0x10, val);
4670 }
4671 
4672 static void setcolors(struct gspca_dev *gspca_dev, s32 val)
4673 {
4674 	struct sd *sd = (struct sd *) gspca_dev;
4675 	static const struct ov_i2c_regvals colors_7660[][6] = {
4676 		{{0x4f, 0x28}, {0x50, 0x2a}, {0x51, 0x02}, {0x52, 0x0a},
4677 		 {0x53, 0x19}, {0x54, 0x23}},
4678 		{{0x4f, 0x47}, {0x50, 0x4a}, {0x51, 0x03}, {0x52, 0x11},
4679 		 {0x53, 0x2c}, {0x54, 0x3e}},
4680 		{{0x4f, 0x66}, {0x50, 0x6b}, {0x51, 0x05}, {0x52, 0x19},
4681 		 {0x53, 0x40}, {0x54, 0x59}},
4682 		{{0x4f, 0x84}, {0x50, 0x8b}, {0x51, 0x06}, {0x52, 0x20},
4683 		 {0x53, 0x53}, {0x54, 0x73}},
4684 		{{0x4f, 0xa3}, {0x50, 0xab}, {0x51, 0x08}, {0x52, 0x28},
4685 		 {0x53, 0x66}, {0x54, 0x8e}},
4686 	};
4687 
4688 	switch (sd->sensor) {
4689 	case SEN_OV8610:
4690 	case SEN_OV7610:
4691 	case SEN_OV76BE:
4692 	case SEN_OV6620:
4693 	case SEN_OV6630:
4694 	case SEN_OV66308AF:
4695 		i2c_w(sd, OV7610_REG_SAT, val);
4696 		break;
4697 	case SEN_OV7620:
4698 	case SEN_OV7620AE:
4699 		/* Use UV gamma control instead. Bits 0 & 7 are reserved. */
4700 /*		rc = ov_i2c_write(sd->dev, 0x62, (val >> 9) & 0x7e);
4701 		if (rc < 0)
4702 			goto out; */
4703 		i2c_w(sd, OV7610_REG_SAT, val);
4704 		break;
4705 	case SEN_OV7640:
4706 	case SEN_OV7648:
4707 		i2c_w(sd, OV7610_REG_SAT, val & 0xf0);
4708 		break;
4709 	case SEN_OV7660:
4710 		write_i2c_regvals(sd, colors_7660[val],
4711 					ARRAY_SIZE(colors_7660[0]));
4712 		break;
4713 	case SEN_OV7670:
4714 		/* supported later once I work out how to do it
4715 		 * transparently fail now! */
4716 		/* set REG_COM13 values for UV sat auto mode */
4717 		break;
4718 	}
4719 }
4720 
4721 static void setautobright(struct gspca_dev *gspca_dev, s32 val)
4722 {
4723 	struct sd *sd = (struct sd *) gspca_dev;
4724 
4725 	i2c_w_mask(sd, 0x2d, val ? 0x10 : 0x00, 0x10);
4726 }
4727 
4728 static void setfreq_i(struct sd *sd, s32 val)
4729 {
4730 	if (sd->sensor == SEN_OV7660
4731 	 || sd->sensor == SEN_OV7670) {
4732 		switch (val) {
4733 		case 0: /* Banding filter disabled */
4734 			i2c_w_mask(sd, OV7670_R13_COM8, 0, OV7670_COM8_BFILT);
4735 			break;
4736 		case 1: /* 50 hz */
4737 			i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT,
4738 				   OV7670_COM8_BFILT);
4739 			i2c_w_mask(sd, OV7670_R3B_COM11, 0x08, 0x18);
4740 			break;
4741 		case 2: /* 60 hz */
4742 			i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT,
4743 				   OV7670_COM8_BFILT);
4744 			i2c_w_mask(sd, OV7670_R3B_COM11, 0x00, 0x18);
4745 			break;
4746 		case 3: /* Auto hz - ov7670 only */
4747 			i2c_w_mask(sd, OV7670_R13_COM8, OV7670_COM8_BFILT,
4748 				   OV7670_COM8_BFILT);
4749 			i2c_w_mask(sd, OV7670_R3B_COM11, OV7670_COM11_HZAUTO,
4750 				   0x18);
4751 			break;
4752 		}
4753 	} else {
4754 		switch (val) {
4755 		case 0: /* Banding filter disabled */
4756 			i2c_w_mask(sd, 0x2d, 0x00, 0x04);
4757 			i2c_w_mask(sd, 0x2a, 0x00, 0x80);
4758 			break;
4759 		case 1: /* 50 hz (filter on and framerate adj) */
4760 			i2c_w_mask(sd, 0x2d, 0x04, 0x04);
4761 			i2c_w_mask(sd, 0x2a, 0x80, 0x80);
4762 			/* 20 fps -> 16.667 fps */
4763 			if (sd->sensor == SEN_OV6620 ||
4764 			    sd->sensor == SEN_OV6630 ||
4765 			    sd->sensor == SEN_OV66308AF)
4766 				i2c_w(sd, 0x2b, 0x5e);
4767 			else
4768 				i2c_w(sd, 0x2b, 0xac);
4769 			break;
4770 		case 2: /* 60 hz (filter on, ...) */
4771 			i2c_w_mask(sd, 0x2d, 0x04, 0x04);
4772 			if (sd->sensor == SEN_OV6620 ||
4773 			    sd->sensor == SEN_OV6630 ||
4774 			    sd->sensor == SEN_OV66308AF) {
4775 				/* 20 fps -> 15 fps */
4776 				i2c_w_mask(sd, 0x2a, 0x80, 0x80);
4777 				i2c_w(sd, 0x2b, 0xa8);
4778 			} else {
4779 				/* no framerate adj. */
4780 				i2c_w_mask(sd, 0x2a, 0x00, 0x80);
4781 			}
4782 			break;
4783 		}
4784 	}
4785 }
4786 
4787 static void setfreq(struct gspca_dev *gspca_dev, s32 val)
4788 {
4789 	struct sd *sd = (struct sd *) gspca_dev;
4790 
4791 	setfreq_i(sd, val);
4792 
4793 	/* Ugly but necessary */
4794 	if (sd->bridge == BRIDGE_W9968CF)
4795 		w9968cf_set_crop_window(sd);
4796 }
4797 
4798 static int sd_get_jcomp(struct gspca_dev *gspca_dev,
4799 			struct v4l2_jpegcompression *jcomp)
4800 {
4801 	struct sd *sd = (struct sd *) gspca_dev;
4802 
4803 	if (sd->bridge != BRIDGE_W9968CF)
4804 		return -ENOTTY;
4805 
4806 	memset(jcomp, 0, sizeof *jcomp);
4807 	jcomp->quality = v4l2_ctrl_g_ctrl(sd->jpegqual);
4808 	jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT |
4809 			      V4L2_JPEG_MARKER_DRI;
4810 	return 0;
4811 }
4812 
4813 static int sd_set_jcomp(struct gspca_dev *gspca_dev,
4814 			const struct v4l2_jpegcompression *jcomp)
4815 {
4816 	struct sd *sd = (struct sd *) gspca_dev;
4817 
4818 	if (sd->bridge != BRIDGE_W9968CF)
4819 		return -ENOTTY;
4820 
4821 	v4l2_ctrl_s_ctrl(sd->jpegqual, jcomp->quality);
4822 	return 0;
4823 }
4824 
4825 static int sd_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
4826 {
4827 	struct gspca_dev *gspca_dev =
4828 		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
4829 	struct sd *sd = (struct sd *)gspca_dev;
4830 
4831 	gspca_dev->usb_err = 0;
4832 
4833 	switch (ctrl->id) {
4834 	case V4L2_CID_AUTOGAIN:
4835 		gspca_dev->exposure->val = i2c_r(sd, 0x10);
4836 		break;
4837 	}
4838 	return 0;
4839 }
4840 
4841 static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
4842 {
4843 	struct gspca_dev *gspca_dev =
4844 		container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
4845 	struct sd *sd = (struct sd *)gspca_dev;
4846 
4847 	gspca_dev->usb_err = 0;
4848 
4849 	if (!gspca_dev->streaming)
4850 		return 0;
4851 
4852 	switch (ctrl->id) {
4853 	case V4L2_CID_BRIGHTNESS:
4854 		setbrightness(gspca_dev, ctrl->val);
4855 		break;
4856 	case V4L2_CID_CONTRAST:
4857 		setcontrast(gspca_dev, ctrl->val);
4858 		break;
4859 	case V4L2_CID_POWER_LINE_FREQUENCY:
4860 		setfreq(gspca_dev, ctrl->val);
4861 		break;
4862 	case V4L2_CID_AUTOBRIGHTNESS:
4863 		if (ctrl->is_new)
4864 			setautobright(gspca_dev, ctrl->val);
4865 		if (!ctrl->val && sd->brightness->is_new)
4866 			setbrightness(gspca_dev, sd->brightness->val);
4867 		break;
4868 	case V4L2_CID_SATURATION:
4869 		setcolors(gspca_dev, ctrl->val);
4870 		break;
4871 	case V4L2_CID_HFLIP:
4872 		sethvflip(gspca_dev, ctrl->val, sd->vflip->val);
4873 		break;
4874 	case V4L2_CID_AUTOGAIN:
4875 		if (ctrl->is_new)
4876 			setautogain(gspca_dev, ctrl->val);
4877 		if (!ctrl->val && gspca_dev->exposure->is_new)
4878 			setexposure(gspca_dev, gspca_dev->exposure->val);
4879 		break;
4880 	case V4L2_CID_JPEG_COMPRESSION_QUALITY:
4881 		return -EBUSY; /* Should never happen, as we grab the ctrl */
4882 	}
4883 	return gspca_dev->usb_err;
4884 }
4885 
4886 static const struct v4l2_ctrl_ops sd_ctrl_ops = {
4887 	.g_volatile_ctrl = sd_g_volatile_ctrl,
4888 	.s_ctrl = sd_s_ctrl,
4889 };
4890 
4891 static int sd_init_controls(struct gspca_dev *gspca_dev)
4892 {
4893 	struct sd *sd = (struct sd *)gspca_dev;
4894 	struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
4895 
4896 	gspca_dev->vdev.ctrl_handler = hdl;
4897 	v4l2_ctrl_handler_init(hdl, 10);
4898 	if (valid_controls[sd->sensor].has_brightness)
4899 		sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4900 			V4L2_CID_BRIGHTNESS, 0,
4901 			sd->sensor == SEN_OV7660 ? 6 : 255, 1,
4902 			sd->sensor == SEN_OV7660 ? 3 : 127);
4903 	if (valid_controls[sd->sensor].has_contrast) {
4904 		if (sd->sensor == SEN_OV7660)
4905 			v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4906 				V4L2_CID_CONTRAST, 0, 6, 1, 3);
4907 		else
4908 			v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4909 				V4L2_CID_CONTRAST, 0, 255, 1,
4910 				(sd->sensor == SEN_OV6630 ||
4911 				 sd->sensor == SEN_OV66308AF) ? 200 : 127);
4912 	}
4913 	if (valid_controls[sd->sensor].has_sat)
4914 		v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4915 			V4L2_CID_SATURATION, 0,
4916 			sd->sensor == SEN_OV7660 ? 4 : 255, 1,
4917 			sd->sensor == SEN_OV7660 ? 2 : 127);
4918 	if (valid_controls[sd->sensor].has_exposure)
4919 		gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4920 			V4L2_CID_EXPOSURE, 0, 255, 1, 127);
4921 	if (valid_controls[sd->sensor].has_hvflip) {
4922 		sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4923 			V4L2_CID_HFLIP, 0, 1, 1, 0);
4924 		sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4925 			V4L2_CID_VFLIP, 0, 1, 1, 0);
4926 	}
4927 	if (valid_controls[sd->sensor].has_autobright)
4928 		sd->autobright = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4929 			V4L2_CID_AUTOBRIGHTNESS, 0, 1, 1, 1);
4930 	if (valid_controls[sd->sensor].has_autogain)
4931 		gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4932 			V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
4933 	if (valid_controls[sd->sensor].has_freq) {
4934 		if (sd->sensor == SEN_OV7670)
4935 			sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
4936 				V4L2_CID_POWER_LINE_FREQUENCY,
4937 				V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
4938 				V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
4939 		else
4940 			sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops,
4941 				V4L2_CID_POWER_LINE_FREQUENCY,
4942 				V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0);
4943 	}
4944 	if (sd->bridge == BRIDGE_W9968CF)
4945 		sd->jpegqual = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
4946 			V4L2_CID_JPEG_COMPRESSION_QUALITY,
4947 			QUALITY_MIN, QUALITY_MAX, 1, QUALITY_DEF);
4948 
4949 	if (hdl->error) {
4950 		PERR("Could not initialize controls\n");
4951 		return hdl->error;
4952 	}
4953 	if (gspca_dev->autogain)
4954 		v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, true);
4955 	if (sd->autobright)
4956 		v4l2_ctrl_auto_cluster(2, &sd->autobright, 0, false);
4957 	if (sd->hflip)
4958 		v4l2_ctrl_cluster(2, &sd->hflip);
4959 	return 0;
4960 }
4961 
4962 /* sub-driver description */
4963 static const struct sd_desc sd_desc = {
4964 	.name = MODULE_NAME,
4965 	.config = sd_config,
4966 	.init = sd_init,
4967 	.init_controls = sd_init_controls,
4968 	.isoc_init = sd_isoc_init,
4969 	.start = sd_start,
4970 	.stopN = sd_stopN,
4971 	.stop0 = sd_stop0,
4972 	.pkt_scan = sd_pkt_scan,
4973 	.dq_callback = sd_reset_snapshot,
4974 	.get_jcomp = sd_get_jcomp,
4975 	.set_jcomp = sd_set_jcomp,
4976 #if IS_ENABLED(CONFIG_INPUT)
4977 	.other_input = 1,
4978 #endif
4979 };
4980 
4981 /* -- module initialisation -- */
4982 static const struct usb_device_id device_table[] = {
4983 	{USB_DEVICE(0x041e, 0x4003), .driver_info = BRIDGE_W9968CF },
4984 	{USB_DEVICE(0x041e, 0x4052),
4985 		.driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED },
4986 	{USB_DEVICE(0x041e, 0x405f), .driver_info = BRIDGE_OV519 },
4987 	{USB_DEVICE(0x041e, 0x4060), .driver_info = BRIDGE_OV519 },
4988 	{USB_DEVICE(0x041e, 0x4061), .driver_info = BRIDGE_OV519 },
4989 	{USB_DEVICE(0x041e, 0x4064), .driver_info = BRIDGE_OV519 },
4990 	{USB_DEVICE(0x041e, 0x4067), .driver_info = BRIDGE_OV519 },
4991 	{USB_DEVICE(0x041e, 0x4068), .driver_info = BRIDGE_OV519 },
4992 	{USB_DEVICE(0x045e, 0x028c),
4993 		.driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED },
4994 	{USB_DEVICE(0x054c, 0x0154), .driver_info = BRIDGE_OV519 },
4995 	{USB_DEVICE(0x054c, 0x0155), .driver_info = BRIDGE_OV519 },
4996 	{USB_DEVICE(0x05a9, 0x0511), .driver_info = BRIDGE_OV511 },
4997 	{USB_DEVICE(0x05a9, 0x0518), .driver_info = BRIDGE_OV518 },
4998 	{USB_DEVICE(0x05a9, 0x0519),
4999 		.driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED },
5000 	{USB_DEVICE(0x05a9, 0x0530),
5001 		.driver_info = BRIDGE_OV519 | BRIDGE_INVERT_LED },
5002 	{USB_DEVICE(0x05a9, 0x2800), .driver_info = BRIDGE_OVFX2 },
5003 	{USB_DEVICE(0x05a9, 0x4519), .driver_info = BRIDGE_OV519 },
5004 	{USB_DEVICE(0x05a9, 0x8519), .driver_info = BRIDGE_OV519 },
5005 	{USB_DEVICE(0x05a9, 0xa511), .driver_info = BRIDGE_OV511PLUS },
5006 	{USB_DEVICE(0x05a9, 0xa518), .driver_info = BRIDGE_OV518PLUS },
5007 	{USB_DEVICE(0x0813, 0x0002), .driver_info = BRIDGE_OV511PLUS },
5008 	{USB_DEVICE(0x0b62, 0x0059), .driver_info = BRIDGE_OVFX2 },
5009 	{USB_DEVICE(0x0e96, 0xc001), .driver_info = BRIDGE_OVFX2 },
5010 	{USB_DEVICE(0x1046, 0x9967), .driver_info = BRIDGE_W9968CF },
5011 	{USB_DEVICE(0x8020, 0xef04), .driver_info = BRIDGE_OVFX2 },
5012 	{}
5013 };
5014 
5015 MODULE_DEVICE_TABLE(usb, device_table);
5016 
5017 /* -- device connect -- */
5018 static int sd_probe(struct usb_interface *intf,
5019 			const struct usb_device_id *id)
5020 {
5021 	return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
5022 				THIS_MODULE);
5023 }
5024 
5025 static struct usb_driver sd_driver = {
5026 	.name = MODULE_NAME,
5027 	.id_table = device_table,
5028 	.probe = sd_probe,
5029 	.disconnect = gspca_disconnect,
5030 #ifdef CONFIG_PM
5031 	.suspend = gspca_suspend,
5032 	.resume = gspca_resume,
5033 	.reset_resume = gspca_resume,
5034 #endif
5035 };
5036 
5037 module_usb_driver(sd_driver);
5038 
5039 module_param(frame_rate, int, 0644);
5040 MODULE_PARM_DESC(frame_rate, "Frame rate (5, 10, 15, 20 or 30 fps)");
5041