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[PATCH] USB: convert a bunch of USB semaphores to mutexes
[mirror_ubuntu-zesty-kernel.git] / drivers / usb / media / ov511.c
1 /*
2 * OmniVision OV511 Camera-to-USB Bridge Driver
3 *
4 * Copyright (c) 1999-2003 Mark W. McClelland
5 * Original decompression code Copyright 1998-2000 OmniVision Technologies
6 * Many improvements by Bret Wallach <bwallac1@san.rr.com>
7 * Color fixes by by Orion Sky Lawlor <olawlor@acm.org> (2/26/2000)
8 * Snapshot code by Kevin Moore
9 * OV7620 fixes by Charl P. Botha <cpbotha@ieee.org>
10 * Changes by Claudio Matsuoka <claudio@conectiva.com>
11 * Original SAA7111A code by Dave Perks <dperks@ibm.net>
12 * URB error messages from pwc driver by Nemosoft
13 * generic_ioctl() code from videodev.c by Gerd Knorr and Alan Cox
14 * Memory management (rvmalloc) code from bttv driver, by Gerd Knorr and others
15 *
16 * Based on the Linux CPiA driver written by Peter Pregler,
17 * Scott J. Bertin and Johannes Erdfelt.
18 *
19 * Please see the file: Documentation/usb/ov511.txt
20 * and the website at: http://alpha.dyndns.org/ov511
21 * for more info.
22 *
23 * This program is free software; you can redistribute it and/or modify it
24 * under the terms of the GNU General Public License as published by the
25 * Free Software Foundation; either version 2 of the License, or (at your
26 * option) any later version.
27 *
28 * This program is distributed in the hope that it will be useful, but
29 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
30 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
31 * for more details.
32 *
33 * You should have received a copy of the GNU General Public License
34 * along with this program; if not, write to the Free Software Foundation,
35 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
36 */
37
38 #include <linux/config.h>
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/vmalloc.h>
42 #include <linux/slab.h>
43 #include <linux/ctype.h>
44 #include <linux/pagemap.h>
45 #include <asm/semaphore.h>
46 #include <asm/processor.h>
47 #include <linux/mm.h>
48 #include <linux/device.h>
49
50 #if defined (__i386__)
51 #include <asm/cpufeature.h>
52 #endif
53
54 #include "ov511.h"
55
56 /*
57 * Version Information
58 */
59 #define DRIVER_VERSION "v1.64 for Linux 2.5"
60 #define EMAIL "mark@alpha.dyndns.org"
61 #define DRIVER_AUTHOR "Mark McClelland <mark@alpha.dyndns.org> & Bret Wallach \
62 & Orion Sky Lawlor <olawlor@acm.org> & Kevin Moore & Charl P. Botha \
63 <cpbotha@ieee.org> & Claudio Matsuoka <claudio@conectiva.com>"
64 #define DRIVER_DESC "ov511 USB Camera Driver"
65
66 #define OV511_I2C_RETRIES 3
67 #define ENABLE_Y_QUANTABLE 1
68 #define ENABLE_UV_QUANTABLE 1
69
70 #define OV511_MAX_UNIT_VIDEO 16
71
72 /* Pixel count * bytes per YUV420 pixel (1.5) */
73 #define MAX_FRAME_SIZE(w, h) ((w) * (h) * 3 / 2)
74
75 #define MAX_DATA_SIZE(w, h) (MAX_FRAME_SIZE(w, h) + sizeof(struct timeval))
76
77 /* Max size * bytes per YUV420 pixel (1.5) + one extra isoc frame for safety */
78 #define MAX_RAW_DATA_SIZE(w, h) ((w) * (h) * 3 / 2 + 1024)
79
80 #define FATAL_ERROR(rc) ((rc) < 0 && (rc) != -EPERM)
81
82 /**********************************************************************
83 * Module Parameters
84 * (See ov511.txt for detailed descriptions of these)
85 **********************************************************************/
86
87 /* These variables (and all static globals) default to zero */
88 static int autobright = 1;
89 static int autogain = 1;
90 static int autoexp = 1;
91 static int debug;
92 static int snapshot;
93 static int cams = 1;
94 static int compress;
95 static int testpat;
96 static int dumppix;
97 static int led = 1;
98 static int dump_bridge;
99 static int dump_sensor;
100 static int printph;
101 static int phy = 0x1f;
102 static int phuv = 0x05;
103 static int pvy = 0x06;
104 static int pvuv = 0x06;
105 static int qhy = 0x14;
106 static int qhuv = 0x03;
107 static int qvy = 0x04;
108 static int qvuv = 0x04;
109 static int lightfreq;
110 static int bandingfilter;
111 static int clockdiv = -1;
112 static int packetsize = -1;
113 static int framedrop = -1;
114 static int fastset;
115 static int force_palette;
116 static int backlight;
117 static int unit_video[OV511_MAX_UNIT_VIDEO];
118 static int remove_zeros;
119 static int mirror;
120 static int ov518_color;
121
122 module_param(autobright, int, 0);
123 MODULE_PARM_DESC(autobright, "Sensor automatically changes brightness");
124 module_param(autogain, int, 0);
125 MODULE_PARM_DESC(autogain, "Sensor automatically changes gain");
126 module_param(autoexp, int, 0);
127 MODULE_PARM_DESC(autoexp, "Sensor automatically changes exposure");
128 module_param(debug, int, 0);
129 MODULE_PARM_DESC(debug,
130 "Debug level: 0=none, 1=inits, 2=warning, 3=config, 4=functions, 5=max");
131 module_param(snapshot, int, 0);
132 MODULE_PARM_DESC(snapshot, "Enable snapshot mode");
133 module_param(cams, int, 0);
134 MODULE_PARM_DESC(cams, "Number of simultaneous cameras");
135 module_param(compress, int, 0);
136 MODULE_PARM_DESC(compress, "Turn on compression");
137 module_param(testpat, int, 0);
138 MODULE_PARM_DESC(testpat,
139 "Replace image with vertical bar testpattern (only partially working)");
140 module_param(dumppix, int, 0);
141 MODULE_PARM_DESC(dumppix, "Dump raw pixel data");
142 module_param(led, int, 0);
143 MODULE_PARM_DESC(led,
144 "LED policy (OV511+ or later). 0=off, 1=on (default), 2=auto (on when open)");
145 module_param(dump_bridge, int, 0);
146 MODULE_PARM_DESC(dump_bridge, "Dump the bridge registers");
147 module_param(dump_sensor, int, 0);
148 MODULE_PARM_DESC(dump_sensor, "Dump the sensor registers");
149 module_param(printph, int, 0);
150 MODULE_PARM_DESC(printph, "Print frame start/end headers");
151 module_param(phy, int, 0);
152 MODULE_PARM_DESC(phy, "Prediction range (horiz. Y)");
153 module_param(phuv, int, 0);
154 MODULE_PARM_DESC(phuv, "Prediction range (horiz. UV)");
155 module_param(pvy, int, 0);
156 MODULE_PARM_DESC(pvy, "Prediction range (vert. Y)");
157 module_param(pvuv, int, 0);
158 MODULE_PARM_DESC(pvuv, "Prediction range (vert. UV)");
159 module_param(qhy, int, 0);
160 MODULE_PARM_DESC(qhy, "Quantization threshold (horiz. Y)");
161 module_param(qhuv, int, 0);
162 MODULE_PARM_DESC(qhuv, "Quantization threshold (horiz. UV)");
163 module_param(qvy, int, 0);
164 MODULE_PARM_DESC(qvy, "Quantization threshold (vert. Y)");
165 module_param(qvuv, int, 0);
166 MODULE_PARM_DESC(qvuv, "Quantization threshold (vert. UV)");
167 module_param(lightfreq, int, 0);
168 MODULE_PARM_DESC(lightfreq,
169 "Light frequency. Set to 50 or 60 Hz, or zero for default settings");
170 module_param(bandingfilter, int, 0);
171 MODULE_PARM_DESC(bandingfilter,
172 "Enable banding filter (to reduce effects of fluorescent lighting)");
173 module_param(clockdiv, int, 0);
174 MODULE_PARM_DESC(clockdiv, "Force pixel clock divisor to a specific value");
175 module_param(packetsize, int, 0);
176 MODULE_PARM_DESC(packetsize, "Force a specific isoc packet size");
177 module_param(framedrop, int, 0);
178 MODULE_PARM_DESC(framedrop, "Force a specific frame drop register setting");
179 module_param(fastset, int, 0);
180 MODULE_PARM_DESC(fastset, "Allows picture settings to take effect immediately");
181 module_param(force_palette, int, 0);
182 MODULE_PARM_DESC(force_palette, "Force the palette to a specific value");
183 module_param(backlight, int, 0);
184 MODULE_PARM_DESC(backlight, "For objects that are lit from behind");
185 static int num_uv;
186 module_param_array(unit_video, int, &num_uv, 0);
187 MODULE_PARM_DESC(unit_video,
188 "Force use of specific minor number(s). 0 is not allowed.");
189 module_param(remove_zeros, int, 0);
190 MODULE_PARM_DESC(remove_zeros,
191 "Remove zero-padding from uncompressed incoming data");
192 module_param(mirror, int, 0);
193 MODULE_PARM_DESC(mirror, "Reverse image horizontally");
194 module_param(ov518_color, int, 0);
195 MODULE_PARM_DESC(ov518_color, "Enable OV518 color (experimental)");
196
197 MODULE_AUTHOR(DRIVER_AUTHOR);
198 MODULE_DESCRIPTION(DRIVER_DESC);
199 MODULE_LICENSE("GPL");
200
201 /**********************************************************************
202 * Miscellaneous Globals
203 **********************************************************************/
204
205 static struct usb_driver ov511_driver;
206
207 /* Number of times to retry a failed I2C transaction. Increase this if you
208 * are getting "Failed to read sensor ID..." */
209 static const int i2c_detect_tries = 5;
210
211 static struct usb_device_id device_table [] = {
212 { USB_DEVICE(VEND_OMNIVISION, PROD_OV511) },
213 { USB_DEVICE(VEND_OMNIVISION, PROD_OV511PLUS) },
214 { USB_DEVICE(VEND_OMNIVISION, PROD_OV518) },
215 { USB_DEVICE(VEND_OMNIVISION, PROD_OV518PLUS) },
216 { USB_DEVICE(VEND_MATTEL, PROD_ME2CAM) },
217 { } /* Terminating entry */
218 };
219
220 MODULE_DEVICE_TABLE (usb, device_table);
221
222 static unsigned char yQuanTable511[] = OV511_YQUANTABLE;
223 static unsigned char uvQuanTable511[] = OV511_UVQUANTABLE;
224 static unsigned char yQuanTable518[] = OV518_YQUANTABLE;
225 static unsigned char uvQuanTable518[] = OV518_UVQUANTABLE;
226
227 /**********************************************************************
228 * Symbolic Names
229 **********************************************************************/
230
231 /* Known OV511-based cameras */
232 static struct symbolic_list camlist[] = {
233 { 0, "Generic Camera (no ID)" },
234 { 1, "Mustek WCam 3X" },
235 { 3, "D-Link DSB-C300" },
236 { 4, "Generic OV511/OV7610" },
237 { 5, "Puretek PT-6007" },
238 { 6, "Lifeview USB Life TV (NTSC)" },
239 { 21, "Creative Labs WebCam 3" },
240 { 22, "Lifeview USB Life TV (PAL D/K+B/G)" },
241 { 36, "Koala-Cam" },
242 { 38, "Lifeview USB Life TV (PAL)" },
243 { 41, "Samsung Anycam MPC-M10" },
244 { 43, "Mtekvision Zeca MV402" },
245 { 46, "Suma eON" },
246 { 70, "Lifeview USB Life TV (PAL/SECAM)" },
247 { 100, "Lifeview RoboCam" },
248 { 102, "AverMedia InterCam Elite" },
249 { 112, "MediaForte MV300" }, /* or OV7110 evaluation kit */
250 { 134, "Ezonics EZCam II" },
251 { 192, "Webeye 2000B" },
252 { 253, "Alpha Vision Tech. AlphaCam SE" },
253 { -1, NULL }
254 };
255
256 /* Video4Linux1 Palettes */
257 static struct symbolic_list v4l1_plist[] = {
258 { VIDEO_PALETTE_GREY, "GREY" },
259 { VIDEO_PALETTE_HI240, "HI240" },
260 { VIDEO_PALETTE_RGB565, "RGB565" },
261 { VIDEO_PALETTE_RGB24, "RGB24" },
262 { VIDEO_PALETTE_RGB32, "RGB32" },
263 { VIDEO_PALETTE_RGB555, "RGB555" },
264 { VIDEO_PALETTE_YUV422, "YUV422" },
265 { VIDEO_PALETTE_YUYV, "YUYV" },
266 { VIDEO_PALETTE_UYVY, "UYVY" },
267 { VIDEO_PALETTE_YUV420, "YUV420" },
268 { VIDEO_PALETTE_YUV411, "YUV411" },
269 { VIDEO_PALETTE_RAW, "RAW" },
270 { VIDEO_PALETTE_YUV422P,"YUV422P" },
271 { VIDEO_PALETTE_YUV411P,"YUV411P" },
272 { VIDEO_PALETTE_YUV420P,"YUV420P" },
273 { VIDEO_PALETTE_YUV410P,"YUV410P" },
274 { -1, NULL }
275 };
276
277 static struct symbolic_list brglist[] = {
278 { BRG_OV511, "OV511" },
279 { BRG_OV511PLUS, "OV511+" },
280 { BRG_OV518, "OV518" },
281 { BRG_OV518PLUS, "OV518+" },
282 { -1, NULL }
283 };
284
285 static struct symbolic_list senlist[] = {
286 { SEN_OV76BE, "OV76BE" },
287 { SEN_OV7610, "OV7610" },
288 { SEN_OV7620, "OV7620" },
289 { SEN_OV7620AE, "OV7620AE" },
290 { SEN_OV6620, "OV6620" },
291 { SEN_OV6630, "OV6630" },
292 { SEN_OV6630AE, "OV6630AE" },
293 { SEN_OV6630AF, "OV6630AF" },
294 { SEN_OV8600, "OV8600" },
295 { SEN_KS0127, "KS0127" },
296 { SEN_KS0127B, "KS0127B" },
297 { SEN_SAA7111A, "SAA7111A" },
298 { -1, NULL }
299 };
300
301 /* URB error codes: */
302 static struct symbolic_list urb_errlist[] = {
303 { -ENOSR, "Buffer error (overrun)" },
304 { -EPIPE, "Stalled (device not responding)" },
305 { -EOVERFLOW, "Babble (bad cable?)" },
306 { -EPROTO, "Bit-stuff error (bad cable?)" },
307 { -EILSEQ, "CRC/Timeout" },
308 { -ETIMEDOUT, "NAK (device does not respond)" },
309 { -1, NULL }
310 };
311
312 /**********************************************************************
313 * Memory management
314 **********************************************************************/
315 static void *
316 rvmalloc(unsigned long size)
317 {
318 void *mem;
319 unsigned long adr;
320
321 size = PAGE_ALIGN(size);
322 mem = vmalloc_32(size);
323 if (!mem)
324 return NULL;
325
326 memset(mem, 0, size); /* Clear the ram out, no junk to the user */
327 adr = (unsigned long) mem;
328 while (size > 0) {
329 SetPageReserved(vmalloc_to_page((void *)adr));
330 adr += PAGE_SIZE;
331 size -= PAGE_SIZE;
332 }
333
334 return mem;
335 }
336
337 static void
338 rvfree(void *mem, unsigned long size)
339 {
340 unsigned long adr;
341
342 if (!mem)
343 return;
344
345 adr = (unsigned long) mem;
346 while ((long) size > 0) {
347 ClearPageReserved(vmalloc_to_page((void *)adr));
348 adr += PAGE_SIZE;
349 size -= PAGE_SIZE;
350 }
351 vfree(mem);
352 }
353
354 /**********************************************************************
355 *
356 * Register I/O
357 *
358 **********************************************************************/
359
360 /* Write an OV51x register */
361 static int
362 reg_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
363 {
364 int rc;
365
366 PDEBUG(5, "0x%02X:0x%02X", reg, value);
367
368 mutex_lock(&ov->cbuf_lock);
369 ov->cbuf[0] = value;
370 rc = usb_control_msg(ov->dev,
371 usb_sndctrlpipe(ov->dev, 0),
372 (ov->bclass == BCL_OV518)?1:2 /* REG_IO */,
373 USB_TYPE_VENDOR | USB_RECIP_DEVICE,
374 0, (__u16)reg, &ov->cbuf[0], 1, 1000);
375 mutex_unlock(&ov->cbuf_lock);
376
377 if (rc < 0)
378 err("reg write: error %d: %s", rc, symbolic(urb_errlist, rc));
379
380 return rc;
381 }
382
383 /* Read from an OV51x register */
384 /* returns: negative is error, pos or zero is data */
385 static int
386 reg_r(struct usb_ov511 *ov, unsigned char reg)
387 {
388 int rc;
389
390 mutex_lock(&ov->cbuf_lock);
391 rc = usb_control_msg(ov->dev,
392 usb_rcvctrlpipe(ov->dev, 0),
393 (ov->bclass == BCL_OV518)?1:3 /* REG_IO */,
394 USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
395 0, (__u16)reg, &ov->cbuf[0], 1, 1000);
396
397 if (rc < 0) {
398 err("reg read: error %d: %s", rc, symbolic(urb_errlist, rc));
399 } else {
400 rc = ov->cbuf[0];
401 PDEBUG(5, "0x%02X:0x%02X", reg, ov->cbuf[0]);
402 }
403
404 mutex_unlock(&ov->cbuf_lock);
405
406 return rc;
407 }
408
409 /*
410 * Writes bits at positions specified by mask to an OV51x reg. Bits that are in
411 * the same position as 1's in "mask" are cleared and set to "value". Bits
412 * that are in the same position as 0's in "mask" are preserved, regardless
413 * of their respective state in "value".
414 */
415 static int
416 reg_w_mask(struct usb_ov511 *ov,
417 unsigned char reg,
418 unsigned char value,
419 unsigned char mask)
420 {
421 int ret;
422 unsigned char oldval, newval;
423
424 ret = reg_r(ov, reg);
425 if (ret < 0)
426 return ret;
427
428 oldval = (unsigned char) ret;
429 oldval &= (~mask); /* Clear the masked bits */
430 value &= mask; /* Enforce mask on value */
431 newval = oldval | value; /* Set the desired bits */
432
433 return (reg_w(ov, reg, newval));
434 }
435
436 /*
437 * Writes multiple (n) byte value to a single register. Only valid with certain
438 * registers (0x30 and 0xc4 - 0xce).
439 */
440 static int
441 ov518_reg_w32(struct usb_ov511 *ov, unsigned char reg, u32 val, int n)
442 {
443 int rc;
444
445 PDEBUG(5, "0x%02X:%7d, n=%d", reg, val, n);
446
447 mutex_lock(&ov->cbuf_lock);
448
449 *((__le32 *)ov->cbuf) = __cpu_to_le32(val);
450
451 rc = usb_control_msg(ov->dev,
452 usb_sndctrlpipe(ov->dev, 0),
453 1 /* REG_IO */,
454 USB_TYPE_VENDOR | USB_RECIP_DEVICE,
455 0, (__u16)reg, ov->cbuf, n, 1000);
456 mutex_unlock(&ov->cbuf_lock);
457
458 if (rc < 0)
459 err("reg write multiple: error %d: %s", rc,
460 symbolic(urb_errlist, rc));
461
462 return rc;
463 }
464
465 static int
466 ov511_upload_quan_tables(struct usb_ov511 *ov)
467 {
468 unsigned char *pYTable = yQuanTable511;
469 unsigned char *pUVTable = uvQuanTable511;
470 unsigned char val0, val1;
471 int i, rc, reg = R511_COMP_LUT_BEGIN;
472
473 PDEBUG(4, "Uploading quantization tables");
474
475 for (i = 0; i < OV511_QUANTABLESIZE / 2; i++) {
476 if (ENABLE_Y_QUANTABLE) {
477 val0 = *pYTable++;
478 val1 = *pYTable++;
479 val0 &= 0x0f;
480 val1 &= 0x0f;
481 val0 |= val1 << 4;
482 rc = reg_w(ov, reg, val0);
483 if (rc < 0)
484 return rc;
485 }
486
487 if (ENABLE_UV_QUANTABLE) {
488 val0 = *pUVTable++;
489 val1 = *pUVTable++;
490 val0 &= 0x0f;
491 val1 &= 0x0f;
492 val0 |= val1 << 4;
493 rc = reg_w(ov, reg + OV511_QUANTABLESIZE/2, val0);
494 if (rc < 0)
495 return rc;
496 }
497
498 reg++;
499 }
500
501 return 0;
502 }
503
504 /* OV518 quantization tables are 8x4 (instead of 8x8) */
505 static int
506 ov518_upload_quan_tables(struct usb_ov511 *ov)
507 {
508 unsigned char *pYTable = yQuanTable518;
509 unsigned char *pUVTable = uvQuanTable518;
510 unsigned char val0, val1;
511 int i, rc, reg = R511_COMP_LUT_BEGIN;
512
513 PDEBUG(4, "Uploading quantization tables");
514
515 for (i = 0; i < OV518_QUANTABLESIZE / 2; i++) {
516 if (ENABLE_Y_QUANTABLE) {
517 val0 = *pYTable++;
518 val1 = *pYTable++;
519 val0 &= 0x0f;
520 val1 &= 0x0f;
521 val0 |= val1 << 4;
522 rc = reg_w(ov, reg, val0);
523 if (rc < 0)
524 return rc;
525 }
526
527 if (ENABLE_UV_QUANTABLE) {
528 val0 = *pUVTable++;
529 val1 = *pUVTable++;
530 val0 &= 0x0f;
531 val1 &= 0x0f;
532 val0 |= val1 << 4;
533 rc = reg_w(ov, reg + OV518_QUANTABLESIZE/2, val0);
534 if (rc < 0)
535 return rc;
536 }
537
538 reg++;
539 }
540
541 return 0;
542 }
543
544 static int
545 ov51x_reset(struct usb_ov511 *ov, unsigned char reset_type)
546 {
547 int rc;
548
549 /* Setting bit 0 not allowed on 518/518Plus */
550 if (ov->bclass == BCL_OV518)
551 reset_type &= 0xfe;
552
553 PDEBUG(4, "Reset: type=0x%02X", reset_type);
554
555 rc = reg_w(ov, R51x_SYS_RESET, reset_type);
556 rc = reg_w(ov, R51x_SYS_RESET, 0);
557
558 if (rc < 0)
559 err("reset: command failed");
560
561 return rc;
562 }
563
564 /**********************************************************************
565 *
566 * Low-level I2C I/O functions
567 *
568 **********************************************************************/
569
570 /* NOTE: Do not call this function directly!
571 * The OV518 I2C I/O procedure is different, hence, this function.
572 * This is normally only called from i2c_w(). Note that this function
573 * always succeeds regardless of whether the sensor is present and working.
574 */
575 static int
576 ov518_i2c_write_internal(struct usb_ov511 *ov,
577 unsigned char reg,
578 unsigned char value)
579 {
580 int rc;
581
582 PDEBUG(5, "0x%02X:0x%02X", reg, value);
583
584 /* Select camera register */
585 rc = reg_w(ov, R51x_I2C_SADDR_3, reg);
586 if (rc < 0)
587 return rc;
588
589 /* Write "value" to I2C data port of OV511 */
590 rc = reg_w(ov, R51x_I2C_DATA, value);
591 if (rc < 0)
592 return rc;
593
594 /* Initiate 3-byte write cycle */
595 rc = reg_w(ov, R518_I2C_CTL, 0x01);
596 if (rc < 0)
597 return rc;
598
599 return 0;
600 }
601
602 /* NOTE: Do not call this function directly! */
603 static int
604 ov511_i2c_write_internal(struct usb_ov511 *ov,
605 unsigned char reg,
606 unsigned char value)
607 {
608 int rc, retries;
609
610 PDEBUG(5, "0x%02X:0x%02X", reg, value);
611
612 /* Three byte write cycle */
613 for (retries = OV511_I2C_RETRIES; ; ) {
614 /* Select camera register */
615 rc = reg_w(ov, R51x_I2C_SADDR_3, reg);
616 if (rc < 0)
617 break;
618
619 /* Write "value" to I2C data port of OV511 */
620 rc = reg_w(ov, R51x_I2C_DATA, value);
621 if (rc < 0)
622 break;
623
624 /* Initiate 3-byte write cycle */
625 rc = reg_w(ov, R511_I2C_CTL, 0x01);
626 if (rc < 0)
627 break;
628
629 /* Retry until idle */
630 do
631 rc = reg_r(ov, R511_I2C_CTL);
632 while (rc > 0 && ((rc&1) == 0));
633 if (rc < 0)
634 break;
635
636 /* Ack? */
637 if ((rc&2) == 0) {
638 rc = 0;
639 break;
640 }
641 #if 0
642 /* I2C abort */
643 reg_w(ov, R511_I2C_CTL, 0x10);
644 #endif
645 if (--retries < 0) {
646 err("i2c write retries exhausted");
647 rc = -1;
648 break;
649 }
650 }
651
652 return rc;
653 }
654
655 /* NOTE: Do not call this function directly!
656 * The OV518 I2C I/O procedure is different, hence, this function.
657 * This is normally only called from i2c_r(). Note that this function
658 * always succeeds regardless of whether the sensor is present and working.
659 */
660 static int
661 ov518_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg)
662 {
663 int rc, value;
664
665 /* Select camera register */
666 rc = reg_w(ov, R51x_I2C_SADDR_2, reg);
667 if (rc < 0)
668 return rc;
669
670 /* Initiate 2-byte write cycle */
671 rc = reg_w(ov, R518_I2C_CTL, 0x03);
672 if (rc < 0)
673 return rc;
674
675 /* Initiate 2-byte read cycle */
676 rc = reg_w(ov, R518_I2C_CTL, 0x05);
677 if (rc < 0)
678 return rc;
679
680 value = reg_r(ov, R51x_I2C_DATA);
681
682 PDEBUG(5, "0x%02X:0x%02X", reg, value);
683
684 return value;
685 }
686
687 /* NOTE: Do not call this function directly!
688 * returns: negative is error, pos or zero is data */
689 static int
690 ov511_i2c_read_internal(struct usb_ov511 *ov, unsigned char reg)
691 {
692 int rc, value, retries;
693
694 /* Two byte write cycle */
695 for (retries = OV511_I2C_RETRIES; ; ) {
696 /* Select camera register */
697 rc = reg_w(ov, R51x_I2C_SADDR_2, reg);
698 if (rc < 0)
699 return rc;
700
701 /* Initiate 2-byte write cycle */
702 rc = reg_w(ov, R511_I2C_CTL, 0x03);
703 if (rc < 0)
704 return rc;
705
706 /* Retry until idle */
707 do
708 rc = reg_r(ov, R511_I2C_CTL);
709 while (rc > 0 && ((rc&1) == 0));
710 if (rc < 0)
711 return rc;
712
713 if ((rc&2) == 0) /* Ack? */
714 break;
715
716 /* I2C abort */
717 reg_w(ov, R511_I2C_CTL, 0x10);
718
719 if (--retries < 0) {
720 err("i2c write retries exhausted");
721 return -1;
722 }
723 }
724
725 /* Two byte read cycle */
726 for (retries = OV511_I2C_RETRIES; ; ) {
727 /* Initiate 2-byte read cycle */
728 rc = reg_w(ov, R511_I2C_CTL, 0x05);
729 if (rc < 0)
730 return rc;
731
732 /* Retry until idle */
733 do
734 rc = reg_r(ov, R511_I2C_CTL);
735 while (rc > 0 && ((rc&1) == 0));
736 if (rc < 0)
737 return rc;
738
739 if ((rc&2) == 0) /* Ack? */
740 break;
741
742 /* I2C abort */
743 rc = reg_w(ov, R511_I2C_CTL, 0x10);
744 if (rc < 0)
745 return rc;
746
747 if (--retries < 0) {
748 err("i2c read retries exhausted");
749 return -1;
750 }
751 }
752
753 value = reg_r(ov, R51x_I2C_DATA);
754
755 PDEBUG(5, "0x%02X:0x%02X", reg, value);
756
757 /* This is needed to make i2c_w() work */
758 rc = reg_w(ov, R511_I2C_CTL, 0x05);
759 if (rc < 0)
760 return rc;
761
762 return value;
763 }
764
765 /* returns: negative is error, pos or zero is data */
766 static int
767 i2c_r(struct usb_ov511 *ov, unsigned char reg)
768 {
769 int rc;
770
771 mutex_lock(&ov->i2c_lock);
772
773 if (ov->bclass == BCL_OV518)
774 rc = ov518_i2c_read_internal(ov, reg);
775 else
776 rc = ov511_i2c_read_internal(ov, reg);
777
778 mutex_unlock(&ov->i2c_lock);
779
780 return rc;
781 }
782
783 static int
784 i2c_w(struct usb_ov511 *ov, unsigned char reg, unsigned char value)
785 {
786 int rc;
787
788 mutex_lock(&ov->i2c_lock);
789
790 if (ov->bclass == BCL_OV518)
791 rc = ov518_i2c_write_internal(ov, reg, value);
792 else
793 rc = ov511_i2c_write_internal(ov, reg, value);
794
795 mutex_unlock(&ov->i2c_lock);
796
797 return rc;
798 }
799
800 /* Do not call this function directly! */
801 static int
802 ov51x_i2c_write_mask_internal(struct usb_ov511 *ov,
803 unsigned char reg,
804 unsigned char value,
805 unsigned char mask)
806 {
807 int rc;
808 unsigned char oldval, newval;
809
810 if (mask == 0xff) {
811 newval = value;
812 } else {
813 if (ov->bclass == BCL_OV518)
814 rc = ov518_i2c_read_internal(ov, reg);
815 else
816 rc = ov511_i2c_read_internal(ov, reg);
817 if (rc < 0)
818 return rc;
819
820 oldval = (unsigned char) rc;
821 oldval &= (~mask); /* Clear the masked bits */
822 value &= mask; /* Enforce mask on value */
823 newval = oldval | value; /* Set the desired bits */
824 }
825
826 if (ov->bclass == BCL_OV518)
827 return (ov518_i2c_write_internal(ov, reg, newval));
828 else
829 return (ov511_i2c_write_internal(ov, reg, newval));
830 }
831
832 /* Writes bits at positions specified by mask to an I2C reg. Bits that are in
833 * the same position as 1's in "mask" are cleared and set to "value". Bits
834 * that are in the same position as 0's in "mask" are preserved, regardless
835 * of their respective state in "value".
836 */
837 static int
838 i2c_w_mask(struct usb_ov511 *ov,
839 unsigned char reg,
840 unsigned char value,
841 unsigned char mask)
842 {
843 int rc;
844
845 mutex_lock(&ov->i2c_lock);
846 rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask);
847 mutex_unlock(&ov->i2c_lock);
848
849 return rc;
850 }
851
852 /* Set the read and write slave IDs. The "slave" argument is the write slave,
853 * and the read slave will be set to (slave + 1). ov->i2c_lock should be held
854 * when calling this. This should not be called from outside the i2c I/O
855 * functions.
856 */
857 static int
858 i2c_set_slave_internal(struct usb_ov511 *ov, unsigned char slave)
859 {
860 int rc;
861
862 rc = reg_w(ov, R51x_I2C_W_SID, slave);
863 if (rc < 0)
864 return rc;
865
866 rc = reg_w(ov, R51x_I2C_R_SID, slave + 1);
867 if (rc < 0)
868 return rc;
869
870 return 0;
871 }
872
873 /* Write to a specific I2C slave ID and register, using the specified mask */
874 static int
875 i2c_w_slave(struct usb_ov511 *ov,
876 unsigned char slave,
877 unsigned char reg,
878 unsigned char value,
879 unsigned char mask)
880 {
881 int rc = 0;
882
883 mutex_lock(&ov->i2c_lock);
884
885 /* Set new slave IDs */
886 rc = i2c_set_slave_internal(ov, slave);
887 if (rc < 0)
888 goto out;
889
890 rc = ov51x_i2c_write_mask_internal(ov, reg, value, mask);
891
892 out:
893 /* Restore primary IDs */
894 if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
895 err("Couldn't restore primary I2C slave");
896
897 mutex_unlock(&ov->i2c_lock);
898 return rc;
899 }
900
901 /* Read from a specific I2C slave ID and register */
902 static int
903 i2c_r_slave(struct usb_ov511 *ov,
904 unsigned char slave,
905 unsigned char reg)
906 {
907 int rc;
908
909 mutex_lock(&ov->i2c_lock);
910
911 /* Set new slave IDs */
912 rc = i2c_set_slave_internal(ov, slave);
913 if (rc < 0)
914 goto out;
915
916 if (ov->bclass == BCL_OV518)
917 rc = ov518_i2c_read_internal(ov, reg);
918 else
919 rc = ov511_i2c_read_internal(ov, reg);
920
921 out:
922 /* Restore primary IDs */
923 if (i2c_set_slave_internal(ov, ov->primary_i2c_slave) < 0)
924 err("Couldn't restore primary I2C slave");
925
926 mutex_unlock(&ov->i2c_lock);
927 return rc;
928 }
929
930 /* Sets I2C read and write slave IDs. Returns <0 for error */
931 static int
932 ov51x_set_slave_ids(struct usb_ov511 *ov, unsigned char sid)
933 {
934 int rc;
935
936 mutex_lock(&ov->i2c_lock);
937
938 rc = i2c_set_slave_internal(ov, sid);
939 if (rc < 0)
940 goto out;
941
942 // FIXME: Is this actually necessary?
943 rc = ov51x_reset(ov, OV511_RESET_NOREGS);
944 out:
945 mutex_unlock(&ov->i2c_lock);
946 return rc;
947 }
948
949 static int
950 write_regvals(struct usb_ov511 *ov, struct ov511_regvals * pRegvals)
951 {
952 int rc;
953
954 while (pRegvals->bus != OV511_DONE_BUS) {
955 if (pRegvals->bus == OV511_REG_BUS) {
956 if ((rc = reg_w(ov, pRegvals->reg, pRegvals->val)) < 0)
957 return rc;
958 } else if (pRegvals->bus == OV511_I2C_BUS) {
959 if ((rc = i2c_w(ov, pRegvals->reg, pRegvals->val)) < 0)
960 return rc;
961 } else {
962 err("Bad regval array");
963 return -1;
964 }
965 pRegvals++;
966 }
967 return 0;
968 }
969
970 #ifdef OV511_DEBUG
971 static void
972 dump_i2c_range(struct usb_ov511 *ov, int reg1, int regn)
973 {
974 int i, rc;
975
976 for (i = reg1; i <= regn; i++) {
977 rc = i2c_r(ov, i);
978 info("Sensor[0x%02X] = 0x%02X", i, rc);
979 }
980 }
981
982 static void
983 dump_i2c_regs(struct usb_ov511 *ov)
984 {
985 info("I2C REGS");
986 dump_i2c_range(ov, 0x00, 0x7C);
987 }
988
989 static void
990 dump_reg_range(struct usb_ov511 *ov, int reg1, int regn)
991 {
992 int i, rc;
993
994 for (i = reg1; i <= regn; i++) {
995 rc = reg_r(ov, i);
996 info("OV511[0x%02X] = 0x%02X", i, rc);
997 }
998 }
999
1000 static void
1001 ov511_dump_regs(struct usb_ov511 *ov)
1002 {
1003 info("CAMERA INTERFACE REGS");
1004 dump_reg_range(ov, 0x10, 0x1f);
1005 info("DRAM INTERFACE REGS");
1006 dump_reg_range(ov, 0x20, 0x23);
1007 info("ISO FIFO REGS");
1008 dump_reg_range(ov, 0x30, 0x31);
1009 info("PIO REGS");
1010 dump_reg_range(ov, 0x38, 0x39);
1011 dump_reg_range(ov, 0x3e, 0x3e);
1012 info("I2C REGS");
1013 dump_reg_range(ov, 0x40, 0x49);
1014 info("SYSTEM CONTROL REGS");
1015 dump_reg_range(ov, 0x50, 0x55);
1016 dump_reg_range(ov, 0x5e, 0x5f);
1017 info("OmniCE REGS");
1018 dump_reg_range(ov, 0x70, 0x79);
1019 /* NOTE: Quantization tables are not readable. You will get the value
1020 * in reg. 0x79 for every table register */
1021 dump_reg_range(ov, 0x80, 0x9f);
1022 dump_reg_range(ov, 0xa0, 0xbf);
1023
1024 }
1025
1026 static void
1027 ov518_dump_regs(struct usb_ov511 *ov)
1028 {
1029 info("VIDEO MODE REGS");
1030 dump_reg_range(ov, 0x20, 0x2f);
1031 info("DATA PUMP AND SNAPSHOT REGS");
1032 dump_reg_range(ov, 0x30, 0x3f);
1033 info("I2C REGS");
1034 dump_reg_range(ov, 0x40, 0x4f);
1035 info("SYSTEM CONTROL AND VENDOR REGS");
1036 dump_reg_range(ov, 0x50, 0x5f);
1037 info("60 - 6F");
1038 dump_reg_range(ov, 0x60, 0x6f);
1039 info("70 - 7F");
1040 dump_reg_range(ov, 0x70, 0x7f);
1041 info("Y QUANTIZATION TABLE");
1042 dump_reg_range(ov, 0x80, 0x8f);
1043 info("UV QUANTIZATION TABLE");
1044 dump_reg_range(ov, 0x90, 0x9f);
1045 info("A0 - BF");
1046 dump_reg_range(ov, 0xa0, 0xbf);
1047 info("CBR");
1048 dump_reg_range(ov, 0xc0, 0xcf);
1049 }
1050 #endif
1051
1052 /*****************************************************************************/
1053
1054 /* Temporarily stops OV511 from functioning. Must do this before changing
1055 * registers while the camera is streaming */
1056 static inline int
1057 ov51x_stop(struct usb_ov511 *ov)
1058 {
1059 PDEBUG(4, "stopping");
1060 ov->stopped = 1;
1061 if (ov->bclass == BCL_OV518)
1062 return (reg_w_mask(ov, R51x_SYS_RESET, 0x3a, 0x3a));
1063 else
1064 return (reg_w(ov, R51x_SYS_RESET, 0x3d));
1065 }
1066
1067 /* Restarts OV511 after ov511_stop() is called. Has no effect if it is not
1068 * actually stopped (for performance). */
1069 static inline int
1070 ov51x_restart(struct usb_ov511 *ov)
1071 {
1072 if (ov->stopped) {
1073 PDEBUG(4, "restarting");
1074 ov->stopped = 0;
1075
1076 /* Reinitialize the stream */
1077 if (ov->bclass == BCL_OV518)
1078 reg_w(ov, 0x2f, 0x80);
1079
1080 return (reg_w(ov, R51x_SYS_RESET, 0x00));
1081 }
1082
1083 return 0;
1084 }
1085
1086 /* Sleeps until no frames are active. Returns !0 if got signal */
1087 static int
1088 ov51x_wait_frames_inactive(struct usb_ov511 *ov)
1089 {
1090 return wait_event_interruptible(ov->wq, ov->curframe < 0);
1091 }
1092
1093 /* Resets the hardware snapshot button */
1094 static void
1095 ov51x_clear_snapshot(struct usb_ov511 *ov)
1096 {
1097 if (ov->bclass == BCL_OV511) {
1098 reg_w(ov, R51x_SYS_SNAP, 0x00);
1099 reg_w(ov, R51x_SYS_SNAP, 0x02);
1100 reg_w(ov, R51x_SYS_SNAP, 0x00);
1101 } else if (ov->bclass == BCL_OV518) {
1102 warn("snapshot reset not supported yet on OV518(+)");
1103 } else {
1104 err("clear snap: invalid bridge type");
1105 }
1106 }
1107
1108 #if 0
1109 /* Checks the status of the snapshot button. Returns 1 if it was pressed since
1110 * it was last cleared, and zero in all other cases (including errors) */
1111 static int
1112 ov51x_check_snapshot(struct usb_ov511 *ov)
1113 {
1114 int ret, status = 0;
1115
1116 if (ov->bclass == BCL_OV511) {
1117 ret = reg_r(ov, R51x_SYS_SNAP);
1118 if (ret < 0) {
1119 err("Error checking snspshot status (%d)", ret);
1120 } else if (ret & 0x08) {
1121 status = 1;
1122 }
1123 } else if (ov->bclass == BCL_OV518) {
1124 warn("snapshot check not supported yet on OV518(+)");
1125 } else {
1126 err("check snap: invalid bridge type");
1127 }
1128
1129 return status;
1130 }
1131 #endif
1132
1133 /* This does an initial reset of an OmniVision sensor and ensures that I2C
1134 * is synchronized. Returns <0 for failure.
1135 */
1136 static int
1137 init_ov_sensor(struct usb_ov511 *ov)
1138 {
1139 int i, success;
1140
1141 /* Reset the sensor */
1142 if (i2c_w(ov, 0x12, 0x80) < 0)
1143 return -EIO;
1144
1145 /* Wait for it to initialize */
1146 msleep(150);
1147
1148 for (i = 0, success = 0; i < i2c_detect_tries && !success; i++) {
1149 if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) &&
1150 (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) {
1151 success = 1;
1152 continue;
1153 }
1154
1155 /* Reset the sensor */
1156 if (i2c_w(ov, 0x12, 0x80) < 0)
1157 return -EIO;
1158 /* Wait for it to initialize */
1159 msleep(150);
1160 /* Dummy read to sync I2C */
1161 if (i2c_r(ov, 0x00) < 0)
1162 return -EIO;
1163 }
1164
1165 if (!success)
1166 return -EIO;
1167
1168 PDEBUG(1, "I2C synced in %d attempt(s)", i);
1169
1170 return 0;
1171 }
1172
1173 static int
1174 ov511_set_packet_size(struct usb_ov511 *ov, int size)
1175 {
1176 int alt, mult;
1177
1178 if (ov51x_stop(ov) < 0)
1179 return -EIO;
1180
1181 mult = size >> 5;
1182
1183 if (ov->bridge == BRG_OV511) {
1184 if (size == 0)
1185 alt = OV511_ALT_SIZE_0;
1186 else if (size == 257)
1187 alt = OV511_ALT_SIZE_257;
1188 else if (size == 513)
1189 alt = OV511_ALT_SIZE_513;
1190 else if (size == 769)
1191 alt = OV511_ALT_SIZE_769;
1192 else if (size == 993)
1193 alt = OV511_ALT_SIZE_993;
1194 else {
1195 err("Set packet size: invalid size (%d)", size);
1196 return -EINVAL;
1197 }
1198 } else if (ov->bridge == BRG_OV511PLUS) {
1199 if (size == 0)
1200 alt = OV511PLUS_ALT_SIZE_0;
1201 else if (size == 33)
1202 alt = OV511PLUS_ALT_SIZE_33;
1203 else if (size == 129)
1204 alt = OV511PLUS_ALT_SIZE_129;
1205 else if (size == 257)
1206 alt = OV511PLUS_ALT_SIZE_257;
1207 else if (size == 385)
1208 alt = OV511PLUS_ALT_SIZE_385;
1209 else if (size == 513)
1210 alt = OV511PLUS_ALT_SIZE_513;
1211 else if (size == 769)
1212 alt = OV511PLUS_ALT_SIZE_769;
1213 else if (size == 961)
1214 alt = OV511PLUS_ALT_SIZE_961;
1215 else {
1216 err("Set packet size: invalid size (%d)", size);
1217 return -EINVAL;
1218 }
1219 } else {
1220 err("Set packet size: Invalid bridge type");
1221 return -EINVAL;
1222 }
1223
1224 PDEBUG(3, "%d, mult=%d, alt=%d", size, mult, alt);
1225
1226 if (reg_w(ov, R51x_FIFO_PSIZE, mult) < 0)
1227 return -EIO;
1228
1229 if (usb_set_interface(ov->dev, ov->iface, alt) < 0) {
1230 err("Set packet size: set interface error");
1231 return -EBUSY;
1232 }
1233
1234 if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
1235 return -EIO;
1236
1237 ov->packet_size = size;
1238
1239 if (ov51x_restart(ov) < 0)
1240 return -EIO;
1241
1242 return 0;
1243 }
1244
1245 /* Note: Unlike the OV511/OV511+, the size argument does NOT include the
1246 * optional packet number byte. The actual size *is* stored in ov->packet_size,
1247 * though. */
1248 static int
1249 ov518_set_packet_size(struct usb_ov511 *ov, int size)
1250 {
1251 int alt;
1252
1253 if (ov51x_stop(ov) < 0)
1254 return -EIO;
1255
1256 if (ov->bclass == BCL_OV518) {
1257 if (size == 0)
1258 alt = OV518_ALT_SIZE_0;
1259 else if (size == 128)
1260 alt = OV518_ALT_SIZE_128;
1261 else if (size == 256)
1262 alt = OV518_ALT_SIZE_256;
1263 else if (size == 384)
1264 alt = OV518_ALT_SIZE_384;
1265 else if (size == 512)
1266 alt = OV518_ALT_SIZE_512;
1267 else if (size == 640)
1268 alt = OV518_ALT_SIZE_640;
1269 else if (size == 768)
1270 alt = OV518_ALT_SIZE_768;
1271 else if (size == 896)
1272 alt = OV518_ALT_SIZE_896;
1273 else {
1274 err("Set packet size: invalid size (%d)", size);
1275 return -EINVAL;
1276 }
1277 } else {
1278 err("Set packet size: Invalid bridge type");
1279 return -EINVAL;
1280 }
1281
1282 PDEBUG(3, "%d, alt=%d", size, alt);
1283
1284 ov->packet_size = size;
1285 if (size > 0) {
1286 /* Program ISO FIFO size reg (packet number isn't included) */
1287 ov518_reg_w32(ov, 0x30, size, 2);
1288
1289 if (ov->packet_numbering)
1290 ++ov->packet_size;
1291 }
1292
1293 if (usb_set_interface(ov->dev, ov->iface, alt) < 0) {
1294 err("Set packet size: set interface error");
1295 return -EBUSY;
1296 }
1297
1298 /* Initialize the stream */
1299 if (reg_w(ov, 0x2f, 0x80) < 0)
1300 return -EIO;
1301
1302 if (ov51x_restart(ov) < 0)
1303 return -EIO;
1304
1305 if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
1306 return -EIO;
1307
1308 return 0;
1309 }
1310
1311 /* Upload compression params and quantization tables. Returns 0 for success. */
1312 static int
1313 ov511_init_compression(struct usb_ov511 *ov)
1314 {
1315 int rc = 0;
1316
1317 if (!ov->compress_inited) {
1318 reg_w(ov, 0x70, phy);
1319 reg_w(ov, 0x71, phuv);
1320 reg_w(ov, 0x72, pvy);
1321 reg_w(ov, 0x73, pvuv);
1322 reg_w(ov, 0x74, qhy);
1323 reg_w(ov, 0x75, qhuv);
1324 reg_w(ov, 0x76, qvy);
1325 reg_w(ov, 0x77, qvuv);
1326
1327 if (ov511_upload_quan_tables(ov) < 0) {
1328 err("Error uploading quantization tables");
1329 rc = -EIO;
1330 goto out;
1331 }
1332 }
1333
1334 ov->compress_inited = 1;
1335 out:
1336 return rc;
1337 }
1338
1339 /* Upload compression params and quantization tables. Returns 0 for success. */
1340 static int
1341 ov518_init_compression(struct usb_ov511 *ov)
1342 {
1343 int rc = 0;
1344
1345 if (!ov->compress_inited) {
1346 if (ov518_upload_quan_tables(ov) < 0) {
1347 err("Error uploading quantization tables");
1348 rc = -EIO;
1349 goto out;
1350 }
1351 }
1352
1353 ov->compress_inited = 1;
1354 out:
1355 return rc;
1356 }
1357
1358 /* -------------------------------------------------------------------------- */
1359
1360 /* Sets sensor's contrast setting to "val" */
1361 static int
1362 sensor_set_contrast(struct usb_ov511 *ov, unsigned short val)
1363 {
1364 int rc;
1365
1366 PDEBUG(3, "%d", val);
1367
1368 if (ov->stop_during_set)
1369 if (ov51x_stop(ov) < 0)
1370 return -EIO;
1371
1372 switch (ov->sensor) {
1373 case SEN_OV7610:
1374 case SEN_OV6620:
1375 {
1376 rc = i2c_w(ov, OV7610_REG_CNT, val >> 8);
1377 if (rc < 0)
1378 goto out;
1379 break;
1380 }
1381 case SEN_OV6630:
1382 {
1383 rc = i2c_w_mask(ov, OV7610_REG_CNT, val >> 12, 0x0f);
1384 if (rc < 0)
1385 goto out;
1386 break;
1387 }
1388 case SEN_OV7620:
1389 {
1390 unsigned char ctab[] = {
1391 0x01, 0x05, 0x09, 0x11, 0x15, 0x35, 0x37, 0x57,
1392 0x5b, 0xa5, 0xa7, 0xc7, 0xc9, 0xcf, 0xef, 0xff
1393 };
1394
1395 /* Use Y gamma control instead. Bit 0 enables it. */
1396 rc = i2c_w(ov, 0x64, ctab[val>>12]);
1397 if (rc < 0)
1398 goto out;
1399 break;
1400 }
1401 case SEN_SAA7111A:
1402 {
1403 rc = i2c_w(ov, 0x0b, val >> 9);
1404 if (rc < 0)
1405 goto out;
1406 break;
1407 }
1408 default:
1409 {
1410 PDEBUG(3, "Unsupported with this sensor");
1411 rc = -EPERM;
1412 goto out;
1413 }
1414 }
1415
1416 rc = 0; /* Success */
1417 ov->contrast = val;
1418 out:
1419 if (ov51x_restart(ov) < 0)
1420 return -EIO;
1421
1422 return rc;
1423 }
1424
1425 /* Gets sensor's contrast setting */
1426 static int
1427 sensor_get_contrast(struct usb_ov511 *ov, unsigned short *val)
1428 {
1429 int rc;
1430
1431 switch (ov->sensor) {
1432 case SEN_OV7610:
1433 case SEN_OV6620:
1434 rc = i2c_r(ov, OV7610_REG_CNT);
1435 if (rc < 0)
1436 return rc;
1437 else
1438 *val = rc << 8;
1439 break;
1440 case SEN_OV6630:
1441 rc = i2c_r(ov, OV7610_REG_CNT);
1442 if (rc < 0)
1443 return rc;
1444 else
1445 *val = rc << 12;
1446 break;
1447 case SEN_OV7620:
1448 /* Use Y gamma reg instead. Bit 0 is the enable bit. */
1449 rc = i2c_r(ov, 0x64);
1450 if (rc < 0)
1451 return rc;
1452 else
1453 *val = (rc & 0xfe) << 8;
1454 break;
1455 case SEN_SAA7111A:
1456 *val = ov->contrast;
1457 break;
1458 default:
1459 PDEBUG(3, "Unsupported with this sensor");
1460 return -EPERM;
1461 }
1462
1463 PDEBUG(3, "%d", *val);
1464 ov->contrast = *val;
1465
1466 return 0;
1467 }
1468
1469 /* -------------------------------------------------------------------------- */
1470
1471 /* Sets sensor's brightness setting to "val" */
1472 static int
1473 sensor_set_brightness(struct usb_ov511 *ov, unsigned short val)
1474 {
1475 int rc;
1476
1477 PDEBUG(4, "%d", val);
1478
1479 if (ov->stop_during_set)
1480 if (ov51x_stop(ov) < 0)
1481 return -EIO;
1482
1483 switch (ov->sensor) {
1484 case SEN_OV7610:
1485 case SEN_OV76BE:
1486 case SEN_OV6620:
1487 case SEN_OV6630:
1488 rc = i2c_w(ov, OV7610_REG_BRT, val >> 8);
1489 if (rc < 0)
1490 goto out;
1491 break;
1492 case SEN_OV7620:
1493 /* 7620 doesn't like manual changes when in auto mode */
1494 if (!ov->auto_brt) {
1495 rc = i2c_w(ov, OV7610_REG_BRT, val >> 8);
1496 if (rc < 0)
1497 goto out;
1498 }
1499 break;
1500 case SEN_SAA7111A:
1501 rc = i2c_w(ov, 0x0a, val >> 8);
1502 if (rc < 0)
1503 goto out;
1504 break;
1505 default:
1506 PDEBUG(3, "Unsupported with this sensor");
1507 rc = -EPERM;
1508 goto out;
1509 }
1510
1511 rc = 0; /* Success */
1512 ov->brightness = val;
1513 out:
1514 if (ov51x_restart(ov) < 0)
1515 return -EIO;
1516
1517 return rc;
1518 }
1519
1520 /* Gets sensor's brightness setting */
1521 static int
1522 sensor_get_brightness(struct usb_ov511 *ov, unsigned short *val)
1523 {
1524 int rc;
1525
1526 switch (ov->sensor) {
1527 case SEN_OV7610:
1528 case SEN_OV76BE:
1529 case SEN_OV7620:
1530 case SEN_OV6620:
1531 case SEN_OV6630:
1532 rc = i2c_r(ov, OV7610_REG_BRT);
1533 if (rc < 0)
1534 return rc;
1535 else
1536 *val = rc << 8;
1537 break;
1538 case SEN_SAA7111A:
1539 *val = ov->brightness;
1540 break;
1541 default:
1542 PDEBUG(3, "Unsupported with this sensor");
1543 return -EPERM;
1544 }
1545
1546 PDEBUG(3, "%d", *val);
1547 ov->brightness = *val;
1548
1549 return 0;
1550 }
1551
1552 /* -------------------------------------------------------------------------- */
1553
1554 /* Sets sensor's saturation (color intensity) setting to "val" */
1555 static int
1556 sensor_set_saturation(struct usb_ov511 *ov, unsigned short val)
1557 {
1558 int rc;
1559
1560 PDEBUG(3, "%d", val);
1561
1562 if (ov->stop_during_set)
1563 if (ov51x_stop(ov) < 0)
1564 return -EIO;
1565
1566 switch (ov->sensor) {
1567 case SEN_OV7610:
1568 case SEN_OV76BE:
1569 case SEN_OV6620:
1570 case SEN_OV6630:
1571 rc = i2c_w(ov, OV7610_REG_SAT, val >> 8);
1572 if (rc < 0)
1573 goto out;
1574 break;
1575 case SEN_OV7620:
1576 // /* Use UV gamma control instead. Bits 0 & 7 are reserved. */
1577 // rc = ov_i2c_write(ov->dev, 0x62, (val >> 9) & 0x7e);
1578 // if (rc < 0)
1579 // goto out;
1580 rc = i2c_w(ov, OV7610_REG_SAT, val >> 8);
1581 if (rc < 0)
1582 goto out;
1583 break;
1584 case SEN_SAA7111A:
1585 rc = i2c_w(ov, 0x0c, val >> 9);
1586 if (rc < 0)
1587 goto out;
1588 break;
1589 default:
1590 PDEBUG(3, "Unsupported with this sensor");
1591 rc = -EPERM;
1592 goto out;
1593 }
1594
1595 rc = 0; /* Success */
1596 ov->colour = val;
1597 out:
1598 if (ov51x_restart(ov) < 0)
1599 return -EIO;
1600
1601 return rc;
1602 }
1603
1604 /* Gets sensor's saturation (color intensity) setting */
1605 static int
1606 sensor_get_saturation(struct usb_ov511 *ov, unsigned short *val)
1607 {
1608 int rc;
1609
1610 switch (ov->sensor) {
1611 case SEN_OV7610:
1612 case SEN_OV76BE:
1613 case SEN_OV6620:
1614 case SEN_OV6630:
1615 rc = i2c_r(ov, OV7610_REG_SAT);
1616 if (rc < 0)
1617 return rc;
1618 else
1619 *val = rc << 8;
1620 break;
1621 case SEN_OV7620:
1622 // /* Use UV gamma reg instead. Bits 0 & 7 are reserved. */
1623 // rc = i2c_r(ov, 0x62);
1624 // if (rc < 0)
1625 // return rc;
1626 // else
1627 // *val = (rc & 0x7e) << 9;
1628 rc = i2c_r(ov, OV7610_REG_SAT);
1629 if (rc < 0)
1630 return rc;
1631 else
1632 *val = rc << 8;
1633 break;
1634 case SEN_SAA7111A:
1635 *val = ov->colour;
1636 break;
1637 default:
1638 PDEBUG(3, "Unsupported with this sensor");
1639 return -EPERM;
1640 }
1641
1642 PDEBUG(3, "%d", *val);
1643 ov->colour = *val;
1644
1645 return 0;
1646 }
1647
1648 /* -------------------------------------------------------------------------- */
1649
1650 /* Sets sensor's hue (red/blue balance) setting to "val" */
1651 static int
1652 sensor_set_hue(struct usb_ov511 *ov, unsigned short val)
1653 {
1654 int rc;
1655
1656 PDEBUG(3, "%d", val);
1657
1658 if (ov->stop_during_set)
1659 if (ov51x_stop(ov) < 0)
1660 return -EIO;
1661
1662 switch (ov->sensor) {
1663 case SEN_OV7610:
1664 case SEN_OV6620:
1665 case SEN_OV6630:
1666 rc = i2c_w(ov, OV7610_REG_RED, 0xFF - (val >> 8));
1667 if (rc < 0)
1668 goto out;
1669
1670 rc = i2c_w(ov, OV7610_REG_BLUE, val >> 8);
1671 if (rc < 0)
1672 goto out;
1673 break;
1674 case SEN_OV7620:
1675 // Hue control is causing problems. I will enable it once it's fixed.
1676 #if 0
1677 rc = i2c_w(ov, 0x7a, (unsigned char)(val >> 8) + 0xb);
1678 if (rc < 0)
1679 goto out;
1680
1681 rc = i2c_w(ov, 0x79, (unsigned char)(val >> 8) + 0xb);
1682 if (rc < 0)
1683 goto out;
1684 #endif
1685 break;
1686 case SEN_SAA7111A:
1687 rc = i2c_w(ov, 0x0d, (val + 32768) >> 8);
1688 if (rc < 0)
1689 goto out;
1690 break;
1691 default:
1692 PDEBUG(3, "Unsupported with this sensor");
1693 rc = -EPERM;
1694 goto out;
1695 }
1696
1697 rc = 0; /* Success */
1698 ov->hue = val;
1699 out:
1700 if (ov51x_restart(ov) < 0)
1701 return -EIO;
1702
1703 return rc;
1704 }
1705
1706 /* Gets sensor's hue (red/blue balance) setting */
1707 static int
1708 sensor_get_hue(struct usb_ov511 *ov, unsigned short *val)
1709 {
1710 int rc;
1711
1712 switch (ov->sensor) {
1713 case SEN_OV7610:
1714 case SEN_OV6620:
1715 case SEN_OV6630:
1716 rc = i2c_r(ov, OV7610_REG_BLUE);
1717 if (rc < 0)
1718 return rc;
1719 else
1720 *val = rc << 8;
1721 break;
1722 case SEN_OV7620:
1723 rc = i2c_r(ov, 0x7a);
1724 if (rc < 0)
1725 return rc;
1726 else
1727 *val = rc << 8;
1728 break;
1729 case SEN_SAA7111A:
1730 *val = ov->hue;
1731 break;
1732 default:
1733 PDEBUG(3, "Unsupported with this sensor");
1734 return -EPERM;
1735 }
1736
1737 PDEBUG(3, "%d", *val);
1738 ov->hue = *val;
1739
1740 return 0;
1741 }
1742
1743 /* -------------------------------------------------------------------------- */
1744
1745 static int
1746 sensor_set_picture(struct usb_ov511 *ov, struct video_picture *p)
1747 {
1748 int rc;
1749
1750 PDEBUG(4, "sensor_set_picture");
1751
1752 ov->whiteness = p->whiteness;
1753
1754 /* Don't return error if a setting is unsupported, or rest of settings
1755 * will not be performed */
1756
1757 rc = sensor_set_contrast(ov, p->contrast);
1758 if (FATAL_ERROR(rc))
1759 return rc;
1760
1761 rc = sensor_set_brightness(ov, p->brightness);
1762 if (FATAL_ERROR(rc))
1763 return rc;
1764
1765 rc = sensor_set_saturation(ov, p->colour);
1766 if (FATAL_ERROR(rc))
1767 return rc;
1768
1769 rc = sensor_set_hue(ov, p->hue);
1770 if (FATAL_ERROR(rc))
1771 return rc;
1772
1773 return 0;
1774 }
1775
1776 static int
1777 sensor_get_picture(struct usb_ov511 *ov, struct video_picture *p)
1778 {
1779 int rc;
1780
1781 PDEBUG(4, "sensor_get_picture");
1782
1783 /* Don't return error if a setting is unsupported, or rest of settings
1784 * will not be performed */
1785
1786 rc = sensor_get_contrast(ov, &(p->contrast));
1787 if (FATAL_ERROR(rc))
1788 return rc;
1789
1790 rc = sensor_get_brightness(ov, &(p->brightness));
1791 if (FATAL_ERROR(rc))
1792 return rc;
1793
1794 rc = sensor_get_saturation(ov, &(p->colour));
1795 if (FATAL_ERROR(rc))
1796 return rc;
1797
1798 rc = sensor_get_hue(ov, &(p->hue));
1799 if (FATAL_ERROR(rc))
1800 return rc;
1801
1802 p->whiteness = 105 << 8;
1803
1804 return 0;
1805 }
1806
1807 #if 0
1808 // FIXME: Exposure range is only 0x00-0x7f in interlace mode
1809 /* Sets current exposure for sensor. This only has an effect if auto-exposure
1810 * is off */
1811 static inline int
1812 sensor_set_exposure(struct usb_ov511 *ov, unsigned char val)
1813 {
1814 int rc;
1815
1816 PDEBUG(3, "%d", val);
1817
1818 if (ov->stop_during_set)
1819 if (ov51x_stop(ov) < 0)
1820 return -EIO;
1821
1822 switch (ov->sensor) {
1823 case SEN_OV6620:
1824 case SEN_OV6630:
1825 case SEN_OV7610:
1826 case SEN_OV7620:
1827 case SEN_OV76BE:
1828 case SEN_OV8600:
1829 rc = i2c_w(ov, 0x10, val);
1830 if (rc < 0)
1831 goto out;
1832
1833 break;
1834 case SEN_KS0127:
1835 case SEN_KS0127B:
1836 case SEN_SAA7111A:
1837 PDEBUG(3, "Unsupported with this sensor");
1838 return -EPERM;
1839 default:
1840 err("Sensor not supported for set_exposure");
1841 return -EINVAL;
1842 }
1843
1844 rc = 0; /* Success */
1845 ov->exposure = val;
1846 out:
1847 if (ov51x_restart(ov) < 0)
1848 return -EIO;
1849
1850 return rc;
1851 }
1852 #endif
1853
1854 /* Gets current exposure level from sensor, regardless of whether it is under
1855 * manual control. */
1856 static int
1857 sensor_get_exposure(struct usb_ov511 *ov, unsigned char *val)
1858 {
1859 int rc;
1860
1861 switch (ov->sensor) {
1862 case SEN_OV7610:
1863 case SEN_OV6620:
1864 case SEN_OV6630:
1865 case SEN_OV7620:
1866 case SEN_OV76BE:
1867 case SEN_OV8600:
1868 rc = i2c_r(ov, 0x10);
1869 if (rc < 0)
1870 return rc;
1871 else
1872 *val = rc;
1873 break;
1874 case SEN_KS0127:
1875 case SEN_KS0127B:
1876 case SEN_SAA7111A:
1877 val = NULL;
1878 PDEBUG(3, "Unsupported with this sensor");
1879 return -EPERM;
1880 default:
1881 err("Sensor not supported for get_exposure");
1882 return -EINVAL;
1883 }
1884
1885 PDEBUG(3, "%d", *val);
1886 ov->exposure = *val;
1887
1888 return 0;
1889 }
1890
1891 /* Turns on or off the LED. Only has an effect with OV511+/OV518(+) */
1892 static void
1893 ov51x_led_control(struct usb_ov511 *ov, int enable)
1894 {
1895 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
1896
1897 if (ov->bridge == BRG_OV511PLUS)
1898 reg_w(ov, R511_SYS_LED_CTL, enable ? 1 : 0);
1899 else if (ov->bclass == BCL_OV518)
1900 reg_w_mask(ov, R518_GPIO_OUT, enable ? 0x02 : 0x00, 0x02);
1901
1902 return;
1903 }
1904
1905 /* Matches the sensor's internal frame rate to the lighting frequency.
1906 * Valid frequencies are:
1907 * 50 - 50Hz, for European and Asian lighting
1908 * 60 - 60Hz, for American lighting
1909 *
1910 * Tested with: OV7610, OV7620, OV76BE, OV6620
1911 * Unsupported: KS0127, KS0127B, SAA7111A
1912 * Returns: 0 for success
1913 */
1914 static int
1915 sensor_set_light_freq(struct usb_ov511 *ov, int freq)
1916 {
1917 int sixty;
1918
1919 PDEBUG(4, "%d Hz", freq);
1920
1921 if (freq == 60)
1922 sixty = 1;
1923 else if (freq == 50)
1924 sixty = 0;
1925 else {
1926 err("Invalid light freq (%d Hz)", freq);
1927 return -EINVAL;
1928 }
1929
1930 switch (ov->sensor) {
1931 case SEN_OV7610:
1932 i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80);
1933 i2c_w(ov, 0x2b, sixty?0x00:0xac);
1934 i2c_w_mask(ov, 0x13, 0x10, 0x10);
1935 i2c_w_mask(ov, 0x13, 0x00, 0x10);
1936 break;
1937 case SEN_OV7620:
1938 case SEN_OV76BE:
1939 case SEN_OV8600:
1940 i2c_w_mask(ov, 0x2a, sixty?0x00:0x80, 0x80);
1941 i2c_w(ov, 0x2b, sixty?0x00:0xac);
1942 i2c_w_mask(ov, 0x76, 0x01, 0x01);
1943 break;
1944 case SEN_OV6620:
1945 case SEN_OV6630:
1946 i2c_w(ov, 0x2b, sixty?0xa8:0x28);
1947 i2c_w(ov, 0x2a, sixty?0x84:0xa4);
1948 break;
1949 case SEN_KS0127:
1950 case SEN_KS0127B:
1951 case SEN_SAA7111A:
1952 PDEBUG(5, "Unsupported with this sensor");
1953 return -EPERM;
1954 default:
1955 err("Sensor not supported for set_light_freq");
1956 return -EINVAL;
1957 }
1958
1959 ov->lightfreq = freq;
1960
1961 return 0;
1962 }
1963
1964 /* If enable is true, turn on the sensor's banding filter, otherwise turn it
1965 * off. This filter tries to reduce the pattern of horizontal light/dark bands
1966 * caused by some (usually fluorescent) lighting. The light frequency must be
1967 * set either before or after enabling it with ov51x_set_light_freq().
1968 *
1969 * Tested with: OV7610, OV7620, OV76BE, OV6620.
1970 * Unsupported: KS0127, KS0127B, SAA7111A
1971 * Returns: 0 for success
1972 */
1973 static int
1974 sensor_set_banding_filter(struct usb_ov511 *ov, int enable)
1975 {
1976 int rc;
1977
1978 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
1979
1980 if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B
1981 || ov->sensor == SEN_SAA7111A) {
1982 PDEBUG(5, "Unsupported with this sensor");
1983 return -EPERM;
1984 }
1985
1986 rc = i2c_w_mask(ov, 0x2d, enable?0x04:0x00, 0x04);
1987 if (rc < 0)
1988 return rc;
1989
1990 ov->bandfilt = enable;
1991
1992 return 0;
1993 }
1994
1995 /* If enable is true, turn on the sensor's auto brightness control, otherwise
1996 * turn it off.
1997 *
1998 * Unsupported: KS0127, KS0127B, SAA7111A
1999 * Returns: 0 for success
2000 */
2001 static int
2002 sensor_set_auto_brightness(struct usb_ov511 *ov, int enable)
2003 {
2004 int rc;
2005
2006 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
2007
2008 if (ov->sensor == SEN_KS0127 || ov->sensor == SEN_KS0127B
2009 || ov->sensor == SEN_SAA7111A) {
2010 PDEBUG(5, "Unsupported with this sensor");
2011 return -EPERM;
2012 }
2013
2014 rc = i2c_w_mask(ov, 0x2d, enable?0x10:0x00, 0x10);
2015 if (rc < 0)
2016 return rc;
2017
2018 ov->auto_brt = enable;
2019
2020 return 0;
2021 }
2022
2023 /* If enable is true, turn on the sensor's auto exposure control, otherwise
2024 * turn it off.
2025 *
2026 * Unsupported: KS0127, KS0127B, SAA7111A
2027 * Returns: 0 for success
2028 */
2029 static int
2030 sensor_set_auto_exposure(struct usb_ov511 *ov, int enable)
2031 {
2032 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
2033
2034 switch (ov->sensor) {
2035 case SEN_OV7610:
2036 i2c_w_mask(ov, 0x29, enable?0x00:0x80, 0x80);
2037 break;
2038 case SEN_OV6620:
2039 case SEN_OV7620:
2040 case SEN_OV76BE:
2041 case SEN_OV8600:
2042 i2c_w_mask(ov, 0x13, enable?0x01:0x00, 0x01);
2043 break;
2044 case SEN_OV6630:
2045 i2c_w_mask(ov, 0x28, enable?0x00:0x10, 0x10);
2046 break;
2047 case SEN_KS0127:
2048 case SEN_KS0127B:
2049 case SEN_SAA7111A:
2050 PDEBUG(5, "Unsupported with this sensor");
2051 return -EPERM;
2052 default:
2053 err("Sensor not supported for set_auto_exposure");
2054 return -EINVAL;
2055 }
2056
2057 ov->auto_exp = enable;
2058
2059 return 0;
2060 }
2061
2062 /* Modifies the sensor's exposure algorithm to allow proper exposure of objects
2063 * that are illuminated from behind.
2064 *
2065 * Tested with: OV6620, OV7620
2066 * Unsupported: OV7610, OV76BE, KS0127, KS0127B, SAA7111A
2067 * Returns: 0 for success
2068 */
2069 static int
2070 sensor_set_backlight(struct usb_ov511 *ov, int enable)
2071 {
2072 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
2073
2074 switch (ov->sensor) {
2075 case SEN_OV7620:
2076 case SEN_OV8600:
2077 i2c_w_mask(ov, 0x68, enable?0xe0:0xc0, 0xe0);
2078 i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
2079 i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02);
2080 break;
2081 case SEN_OV6620:
2082 i2c_w_mask(ov, 0x4e, enable?0xe0:0xc0, 0xe0);
2083 i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
2084 i2c_w_mask(ov, 0x0e, enable?0x80:0x00, 0x80);
2085 break;
2086 case SEN_OV6630:
2087 i2c_w_mask(ov, 0x4e, enable?0x80:0x60, 0xe0);
2088 i2c_w_mask(ov, 0x29, enable?0x08:0x00, 0x08);
2089 i2c_w_mask(ov, 0x28, enable?0x02:0x00, 0x02);
2090 break;
2091 case SEN_OV7610:
2092 case SEN_OV76BE:
2093 case SEN_KS0127:
2094 case SEN_KS0127B:
2095 case SEN_SAA7111A:
2096 PDEBUG(5, "Unsupported with this sensor");
2097 return -EPERM;
2098 default:
2099 err("Sensor not supported for set_backlight");
2100 return -EINVAL;
2101 }
2102
2103 ov->backlight = enable;
2104
2105 return 0;
2106 }
2107
2108 static int
2109 sensor_set_mirror(struct usb_ov511 *ov, int enable)
2110 {
2111 PDEBUG(4, " (%s)", enable ? "turn on" : "turn off");
2112
2113 switch (ov->sensor) {
2114 case SEN_OV6620:
2115 case SEN_OV6630:
2116 case SEN_OV7610:
2117 case SEN_OV7620:
2118 case SEN_OV76BE:
2119 case SEN_OV8600:
2120 i2c_w_mask(ov, 0x12, enable?0x40:0x00, 0x40);
2121 break;
2122 case SEN_KS0127:
2123 case SEN_KS0127B:
2124 case SEN_SAA7111A:
2125 PDEBUG(5, "Unsupported with this sensor");
2126 return -EPERM;
2127 default:
2128 err("Sensor not supported for set_mirror");
2129 return -EINVAL;
2130 }
2131
2132 ov->mirror = enable;
2133
2134 return 0;
2135 }
2136
2137 /* Returns number of bits per pixel (regardless of where they are located;
2138 * planar or not), or zero for unsupported format.
2139 */
2140 static inline int
2141 get_depth(int palette)
2142 {
2143 switch (palette) {
2144 case VIDEO_PALETTE_GREY: return 8;
2145 case VIDEO_PALETTE_YUV420: return 12;
2146 case VIDEO_PALETTE_YUV420P: return 12; /* Planar */
2147 default: return 0; /* Invalid format */
2148 }
2149 }
2150
2151 /* Bytes per frame. Used by read(). Return of 0 indicates error */
2152 static inline long int
2153 get_frame_length(struct ov511_frame *frame)
2154 {
2155 if (!frame)
2156 return 0;
2157 else
2158 return ((frame->width * frame->height
2159 * get_depth(frame->format)) >> 3);
2160 }
2161
2162 static int
2163 mode_init_ov_sensor_regs(struct usb_ov511 *ov, int width, int height,
2164 int mode, int sub_flag, int qvga)
2165 {
2166 int clock;
2167
2168 /******** Mode (VGA/QVGA) and sensor specific regs ********/
2169
2170 switch (ov->sensor) {
2171 case SEN_OV7610:
2172 i2c_w(ov, 0x14, qvga?0x24:0x04);
2173 // FIXME: Does this improve the image quality or frame rate?
2174 #if 0
2175 i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
2176 i2c_w(ov, 0x24, 0x10);
2177 i2c_w(ov, 0x25, qvga?0x40:0x8a);
2178 i2c_w(ov, 0x2f, qvga?0x30:0xb0);
2179 i2c_w(ov, 0x35, qvga?0x1c:0x9c);
2180 #endif
2181 break;
2182 case SEN_OV7620:
2183 // i2c_w(ov, 0x2b, 0x00);
2184 i2c_w(ov, 0x14, qvga?0xa4:0x84);
2185 i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
2186 i2c_w(ov, 0x24, qvga?0x20:0x3a);
2187 i2c_w(ov, 0x25, qvga?0x30:0x60);
2188 i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40);
2189 i2c_w_mask(ov, 0x67, qvga?0xf0:0x90, 0xf0);
2190 i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20);
2191 break;
2192 case SEN_OV76BE:
2193 // i2c_w(ov, 0x2b, 0x00);
2194 i2c_w(ov, 0x14, qvga?0xa4:0x84);
2195 // FIXME: Enable this once 7620AE uses 7620 initial settings
2196 #if 0
2197 i2c_w_mask(ov, 0x28, qvga?0x00:0x20, 0x20);
2198 i2c_w(ov, 0x24, qvga?0x20:0x3a);
2199 i2c_w(ov, 0x25, qvga?0x30:0x60);
2200 i2c_w_mask(ov, 0x2d, qvga?0x40:0x00, 0x40);
2201 i2c_w_mask(ov, 0x67, qvga?0xb0:0x90, 0xf0);
2202 i2c_w_mask(ov, 0x74, qvga?0x20:0x00, 0x20);
2203 #endif
2204 break;
2205 case SEN_OV6620:
2206 i2c_w(ov, 0x14, qvga?0x24:0x04);
2207 break;
2208 case SEN_OV6630:
2209 i2c_w(ov, 0x14, qvga?0xa0:0x80);
2210 break;
2211 default:
2212 err("Invalid sensor");
2213 return -EINVAL;
2214 }
2215
2216 /******** Palette-specific regs ********/
2217
2218 if (mode == VIDEO_PALETTE_GREY) {
2219 if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
2220 /* these aren't valid on the OV6620/OV7620/6630? */
2221 i2c_w_mask(ov, 0x0e, 0x40, 0x40);
2222 }
2223
2224 if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518
2225 && ov518_color) {
2226 i2c_w_mask(ov, 0x12, 0x00, 0x10);
2227 i2c_w_mask(ov, 0x13, 0x00, 0x20);
2228 } else {
2229 i2c_w_mask(ov, 0x13, 0x20, 0x20);
2230 }
2231 } else {
2232 if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
2233 /* not valid on the OV6620/OV7620/6630? */
2234 i2c_w_mask(ov, 0x0e, 0x00, 0x40);
2235 }
2236
2237 /* The OV518 needs special treatment. Although both the OV518
2238 * and the OV6630 support a 16-bit video bus, only the 8 bit Y
2239 * bus is actually used. The UV bus is tied to ground.
2240 * Therefore, the OV6630 needs to be in 8-bit multiplexed
2241 * output mode */
2242
2243 if (ov->sensor == SEN_OV6630 && ov->bridge == BRG_OV518
2244 && ov518_color) {
2245 i2c_w_mask(ov, 0x12, 0x10, 0x10);
2246 i2c_w_mask(ov, 0x13, 0x20, 0x20);
2247 } else {
2248 i2c_w_mask(ov, 0x13, 0x00, 0x20);
2249 }
2250 }
2251
2252 /******** Clock programming ********/
2253
2254 /* The OV6620 needs special handling. This prevents the
2255 * severe banding that normally occurs */
2256 if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630)
2257 {
2258 /* Clock down */
2259
2260 i2c_w(ov, 0x2a, 0x04);
2261
2262 if (ov->compress) {
2263 // clock = 0; /* This ensures the highest frame rate */
2264 clock = 3;
2265 } else if (clockdiv == -1) { /* If user didn't override it */
2266 clock = 3; /* Gives better exposure time */
2267 } else {
2268 clock = clockdiv;
2269 }
2270
2271 PDEBUG(4, "Setting clock divisor to %d", clock);
2272
2273 i2c_w(ov, 0x11, clock);
2274
2275 i2c_w(ov, 0x2a, 0x84);
2276 /* This next setting is critical. It seems to improve
2277 * the gain or the contrast. The "reserved" bits seem
2278 * to have some effect in this case. */
2279 i2c_w(ov, 0x2d, 0x85);
2280 }
2281 else
2282 {
2283 if (ov->compress) {
2284 clock = 1; /* This ensures the highest frame rate */
2285 } else if (clockdiv == -1) { /* If user didn't override it */
2286 /* Calculate and set the clock divisor */
2287 clock = ((sub_flag ? ov->subw * ov->subh
2288 : width * height)
2289 * (mode == VIDEO_PALETTE_GREY ? 2 : 3) / 2)
2290 / 66000;
2291 } else {
2292 clock = clockdiv;
2293 }
2294
2295 PDEBUG(4, "Setting clock divisor to %d", clock);
2296
2297 i2c_w(ov, 0x11, clock);
2298 }
2299
2300 /******** Special Features ********/
2301
2302 if (framedrop >= 0)
2303 i2c_w(ov, 0x16, framedrop);
2304
2305 /* Test Pattern */
2306 i2c_w_mask(ov, 0x12, (testpat?0x02:0x00), 0x02);
2307
2308 /* Enable auto white balance */
2309 i2c_w_mask(ov, 0x12, 0x04, 0x04);
2310
2311 // This will go away as soon as ov51x_mode_init_sensor_regs()
2312 // is fully tested.
2313 /* 7620/6620/6630? don't have register 0x35, so play it safe */
2314 if (ov->sensor == SEN_OV7610 || ov->sensor == SEN_OV76BE) {
2315 if (width == 640 && height == 480)
2316 i2c_w(ov, 0x35, 0x9e);
2317 else
2318 i2c_w(ov, 0x35, 0x1e);
2319 }
2320
2321 return 0;
2322 }
2323
2324 static int
2325 set_ov_sensor_window(struct usb_ov511 *ov, int width, int height, int mode,
2326 int sub_flag)
2327 {
2328 int ret;
2329 int hwsbase, hwebase, vwsbase, vwebase, hwsize, vwsize;
2330 int hoffset, voffset, hwscale = 0, vwscale = 0;
2331
2332 /* The different sensor ICs handle setting up of window differently.
2333 * IF YOU SET IT WRONG, YOU WILL GET ALL ZERO ISOC DATA FROM OV51x!!! */
2334 switch (ov->sensor) {
2335 case SEN_OV7610:
2336 case SEN_OV76BE:
2337 hwsbase = 0x38;
2338 hwebase = 0x3a;
2339 vwsbase = vwebase = 0x05;
2340 break;
2341 case SEN_OV6620:
2342 case SEN_OV6630:
2343 hwsbase = 0x38;
2344 hwebase = 0x3a;
2345 vwsbase = 0x05;
2346 vwebase = 0x06;
2347 break;
2348 case SEN_OV7620:
2349 hwsbase = 0x2f; /* From 7620.SET (spec is wrong) */
2350 hwebase = 0x2f;
2351 vwsbase = vwebase = 0x05;
2352 break;
2353 default:
2354 err("Invalid sensor");
2355 return -EINVAL;
2356 }
2357
2358 if (ov->sensor == SEN_OV6620 || ov->sensor == SEN_OV6630) {
2359 /* Note: OV518(+) does downsample on its own) */
2360 if ((width > 176 && height > 144)
2361 || ov->bclass == BCL_OV518) { /* CIF */
2362 ret = mode_init_ov_sensor_regs(ov, width, height,
2363 mode, sub_flag, 0);
2364 if (ret < 0)
2365 return ret;
2366 hwscale = 1;
2367 vwscale = 1; /* The datasheet says 0; it's wrong */
2368 hwsize = 352;
2369 vwsize = 288;
2370 } else if (width > 176 || height > 144) {
2371 err("Illegal dimensions");
2372 return -EINVAL;
2373 } else { /* QCIF */
2374 ret = mode_init_ov_sensor_regs(ov, width, height,
2375 mode, sub_flag, 1);
2376 if (ret < 0)
2377 return ret;
2378 hwsize = 176;
2379 vwsize = 144;
2380 }
2381 } else {
2382 if (width > 320 && height > 240) { /* VGA */
2383 ret = mode_init_ov_sensor_regs(ov, width, height,
2384 mode, sub_flag, 0);
2385 if (ret < 0)
2386 return ret;
2387 hwscale = 2;
2388 vwscale = 1;
2389 hwsize = 640;
2390 vwsize = 480;
2391 } else if (width > 320 || height > 240) {
2392 err("Illegal dimensions");
2393 return -EINVAL;
2394 } else { /* QVGA */
2395 ret = mode_init_ov_sensor_regs(ov, width, height,
2396 mode, sub_flag, 1);
2397 if (ret < 0)
2398 return ret;
2399 hwscale = 1;
2400 hwsize = 320;
2401 vwsize = 240;
2402 }
2403 }
2404
2405 /* Center the window */
2406 hoffset = ((hwsize - width) / 2) >> hwscale;
2407 voffset = ((vwsize - height) / 2) >> vwscale;
2408
2409 /* FIXME! - This needs to be changed to support 160x120 and 6620!!! */
2410 if (sub_flag) {
2411 i2c_w(ov, 0x17, hwsbase+(ov->subx>>hwscale));
2412 i2c_w(ov, 0x18, hwebase+((ov->subx+ov->subw)>>hwscale));
2413 i2c_w(ov, 0x19, vwsbase+(ov->suby>>vwscale));
2414 i2c_w(ov, 0x1a, vwebase+((ov->suby+ov->subh)>>vwscale));
2415 } else {
2416 i2c_w(ov, 0x17, hwsbase + hoffset);
2417 i2c_w(ov, 0x18, hwebase + hoffset + (hwsize>>hwscale));
2418 i2c_w(ov, 0x19, vwsbase + voffset);
2419 i2c_w(ov, 0x1a, vwebase + voffset + (vwsize>>vwscale));
2420 }
2421
2422 #ifdef OV511_DEBUG
2423 if (dump_sensor)
2424 dump_i2c_regs(ov);
2425 #endif
2426
2427 return 0;
2428 }
2429
2430 /* Set up the OV511/OV511+ with the given image parameters.
2431 *
2432 * Do not put any sensor-specific code in here (including I2C I/O functions)
2433 */
2434 static int
2435 ov511_mode_init_regs(struct usb_ov511 *ov,
2436 int width, int height, int mode, int sub_flag)
2437 {
2438 int hsegs, vsegs;
2439
2440 if (sub_flag) {
2441 width = ov->subw;
2442 height = ov->subh;
2443 }
2444
2445 PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d",
2446 width, height, mode, sub_flag);
2447
2448 // FIXME: This should be moved to a 7111a-specific function once
2449 // subcapture is dealt with properly
2450 if (ov->sensor == SEN_SAA7111A) {
2451 if (width == 320 && height == 240) {
2452 /* No need to do anything special */
2453 } else if (width == 640 && height == 480) {
2454 /* Set the OV511 up as 320x480, but keep the
2455 * V4L resolution as 640x480 */
2456 width = 320;
2457 } else {
2458 err("SAA7111A only allows 320x240 or 640x480");
2459 return -EINVAL;
2460 }
2461 }
2462
2463 /* Make sure width and height are a multiple of 8 */
2464 if (width % 8 || height % 8) {
2465 err("Invalid size (%d, %d) (mode = %d)", width, height, mode);
2466 return -EINVAL;
2467 }
2468
2469 if (width < ov->minwidth || height < ov->minheight) {
2470 err("Requested dimensions are too small");
2471 return -EINVAL;
2472 }
2473
2474 if (ov51x_stop(ov) < 0)
2475 return -EIO;
2476
2477 if (mode == VIDEO_PALETTE_GREY) {
2478 reg_w(ov, R511_CAM_UV_EN, 0x00);
2479 reg_w(ov, R511_SNAP_UV_EN, 0x00);
2480 reg_w(ov, R511_SNAP_OPTS, 0x01);
2481 } else {
2482 reg_w(ov, R511_CAM_UV_EN, 0x01);
2483 reg_w(ov, R511_SNAP_UV_EN, 0x01);
2484 reg_w(ov, R511_SNAP_OPTS, 0x03);
2485 }
2486
2487 /* Here I'm assuming that snapshot size == image size.
2488 * I hope that's always true. --claudio
2489 */
2490 hsegs = (width >> 3) - 1;
2491 vsegs = (height >> 3) - 1;
2492
2493 reg_w(ov, R511_CAM_PXCNT, hsegs);
2494 reg_w(ov, R511_CAM_LNCNT, vsegs);
2495 reg_w(ov, R511_CAM_PXDIV, 0x00);
2496 reg_w(ov, R511_CAM_LNDIV, 0x00);
2497
2498 /* YUV420, low pass filter on */
2499 reg_w(ov, R511_CAM_OPTS, 0x03);
2500
2501 /* Snapshot additions */
2502 reg_w(ov, R511_SNAP_PXCNT, hsegs);
2503 reg_w(ov, R511_SNAP_LNCNT, vsegs);
2504 reg_w(ov, R511_SNAP_PXDIV, 0x00);
2505 reg_w(ov, R511_SNAP_LNDIV, 0x00);
2506
2507 if (ov->compress) {
2508 /* Enable Y and UV quantization and compression */
2509 reg_w(ov, R511_COMP_EN, 0x07);
2510 reg_w(ov, R511_COMP_LUT_EN, 0x03);
2511 ov51x_reset(ov, OV511_RESET_OMNICE);
2512 }
2513
2514 if (ov51x_restart(ov) < 0)
2515 return -EIO;
2516
2517 return 0;
2518 }
2519
2520 /* Sets up the OV518/OV518+ with the given image parameters
2521 *
2522 * OV518 needs a completely different approach, until we can figure out what
2523 * the individual registers do. Also, only 15 FPS is supported now.
2524 *
2525 * Do not put any sensor-specific code in here (including I2C I/O functions)
2526 */
2527 static int
2528 ov518_mode_init_regs(struct usb_ov511 *ov,
2529 int width, int height, int mode, int sub_flag)
2530 {
2531 int hsegs, vsegs, hi_res;
2532
2533 if (sub_flag) {
2534 width = ov->subw;
2535 height = ov->subh;
2536 }
2537
2538 PDEBUG(3, "width:%d, height:%d, mode:%d, sub:%d",
2539 width, height, mode, sub_flag);
2540
2541 if (width % 16 || height % 8) {
2542 err("Invalid size (%d, %d)", width, height);
2543 return -EINVAL;
2544 }
2545
2546 if (width < ov->minwidth || height < ov->minheight) {
2547 err("Requested dimensions are too small");
2548 return -EINVAL;
2549 }
2550
2551 if (width >= 320 && height >= 240) {
2552 hi_res = 1;
2553 } else if (width >= 320 || height >= 240) {
2554 err("Invalid width/height combination (%d, %d)", width, height);
2555 return -EINVAL;
2556 } else {
2557 hi_res = 0;
2558 }
2559
2560 if (ov51x_stop(ov) < 0)
2561 return -EIO;
2562
2563 /******** Set the mode ********/
2564
2565 reg_w(ov, 0x2b, 0);
2566 reg_w(ov, 0x2c, 0);
2567 reg_w(ov, 0x2d, 0);
2568 reg_w(ov, 0x2e, 0);
2569 reg_w(ov, 0x3b, 0);
2570 reg_w(ov, 0x3c, 0);
2571 reg_w(ov, 0x3d, 0);
2572 reg_w(ov, 0x3e, 0);
2573
2574 if (ov->bridge == BRG_OV518 && ov518_color) {
2575 /* OV518 needs U and V swapped */
2576 i2c_w_mask(ov, 0x15, 0x00, 0x01);
2577
2578 if (mode == VIDEO_PALETTE_GREY) {
2579 /* Set 16-bit input format (UV data are ignored) */
2580 reg_w_mask(ov, 0x20, 0x00, 0x08);
2581
2582 /* Set 8-bit (4:0:0) output format */
2583 reg_w_mask(ov, 0x28, 0x00, 0xf0);
2584 reg_w_mask(ov, 0x38, 0x00, 0xf0);
2585 } else {
2586 /* Set 8-bit (YVYU) input format */
2587 reg_w_mask(ov, 0x20, 0x08, 0x08);
2588
2589 /* Set 12-bit (4:2:0) output format */
2590 reg_w_mask(ov, 0x28, 0x80, 0xf0);
2591 reg_w_mask(ov, 0x38, 0x80, 0xf0);
2592 }
2593 } else {
2594 reg_w(ov, 0x28, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80);
2595 reg_w(ov, 0x38, (mode == VIDEO_PALETTE_GREY) ? 0x00:0x80);
2596 }
2597
2598 hsegs = width / 16;
2599 vsegs = height / 4;
2600
2601 reg_w(ov, 0x29, hsegs);
2602 reg_w(ov, 0x2a, vsegs);
2603
2604 reg_w(ov, 0x39, hsegs);
2605 reg_w(ov, 0x3a, vsegs);
2606
2607 /* Windows driver does this here; who knows why */
2608 reg_w(ov, 0x2f, 0x80);
2609
2610 /******** Set the framerate (to 15 FPS) ********/
2611
2612 /* Mode independent, but framerate dependent, regs */
2613 reg_w(ov, 0x51, 0x02); /* Clock divider; lower==faster */
2614 reg_w(ov, 0x22, 0x18);
2615 reg_w(ov, 0x23, 0xff);
2616
2617 if (ov->bridge == BRG_OV518PLUS)
2618 reg_w(ov, 0x21, 0x19);
2619 else
2620 reg_w(ov, 0x71, 0x19); /* Compression-related? */
2621
2622 // FIXME: Sensor-specific
2623 /* Bit 5 is what matters here. Of course, it is "reserved" */
2624 i2c_w(ov, 0x54, 0x23);
2625
2626 reg_w(ov, 0x2f, 0x80);
2627
2628 if (ov->bridge == BRG_OV518PLUS) {
2629 reg_w(ov, 0x24, 0x94);
2630 reg_w(ov, 0x25, 0x90);
2631 ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */
2632 ov518_reg_w32(ov, 0xc6, 540, 2); /* 21ch */
2633 ov518_reg_w32(ov, 0xc7, 540, 2); /* 21ch */
2634 ov518_reg_w32(ov, 0xc8, 108, 2); /* 6ch */
2635 ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */
2636 ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */
2637 ov518_reg_w32(ov, 0xcc, 2400, 2); /* 960h */
2638 ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */
2639 ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */
2640 } else {
2641 reg_w(ov, 0x24, 0x9f);
2642 reg_w(ov, 0x25, 0x90);
2643 ov518_reg_w32(ov, 0xc4, 400, 2); /* 190h */
2644 ov518_reg_w32(ov, 0xc6, 500, 2); /* 1f4h */
2645 ov518_reg_w32(ov, 0xc7, 500, 2); /* 1f4h */
2646 ov518_reg_w32(ov, 0xc8, 142, 2); /* 8eh */
2647 ov518_reg_w32(ov, 0xca, 131098, 3); /* 2001ah */
2648 ov518_reg_w32(ov, 0xcb, 532, 2); /* 214h */
2649 ov518_reg_w32(ov, 0xcc, 2000, 2); /* 7d0h */
2650 ov518_reg_w32(ov, 0xcd, 32, 2); /* 20h */
2651 ov518_reg_w32(ov, 0xce, 608, 2); /* 260h */
2652 }
2653
2654 reg_w(ov, 0x2f, 0x80);
2655
2656 if (ov51x_restart(ov) < 0)
2657 return -EIO;
2658
2659 /* Reset it just for good measure */
2660 if (ov51x_reset(ov, OV511_RESET_NOREGS) < 0)
2661 return -EIO;
2662
2663 return 0;
2664 }
2665
2666 /* This is a wrapper around the OV511, OV518, and sensor specific functions */
2667 static int
2668 mode_init_regs(struct usb_ov511 *ov,
2669 int width, int height, int mode, int sub_flag)
2670 {
2671 int rc = 0;
2672
2673 if (!ov || !ov->dev)
2674 return -EFAULT;
2675
2676 if (ov->bclass == BCL_OV518) {
2677 rc = ov518_mode_init_regs(ov, width, height, mode, sub_flag);
2678 } else {
2679 rc = ov511_mode_init_regs(ov, width, height, mode, sub_flag);
2680 }
2681
2682 if (FATAL_ERROR(rc))
2683 return rc;
2684
2685 switch (ov->sensor) {
2686 case SEN_OV7610:
2687 case SEN_OV7620:
2688 case SEN_OV76BE:
2689 case SEN_OV8600:
2690 case SEN_OV6620:
2691 case SEN_OV6630:
2692 rc = set_ov_sensor_window(ov, width, height, mode, sub_flag);
2693 break;
2694 case SEN_KS0127:
2695 case SEN_KS0127B:
2696 err("KS0127-series decoders not supported yet");
2697 rc = -EINVAL;
2698 break;
2699 case SEN_SAA7111A:
2700 // rc = mode_init_saa_sensor_regs(ov, width, height, mode,
2701 // sub_flag);
2702
2703 PDEBUG(1, "SAA status = 0x%02X", i2c_r(ov, 0x1f));
2704 break;
2705 default:
2706 err("Unknown sensor");
2707 rc = -EINVAL;
2708 }
2709
2710 if (FATAL_ERROR(rc))
2711 return rc;
2712
2713 /* Sensor-independent settings */
2714 rc = sensor_set_auto_brightness(ov, ov->auto_brt);
2715 if (FATAL_ERROR(rc))
2716 return rc;
2717
2718 rc = sensor_set_auto_exposure(ov, ov->auto_exp);
2719 if (FATAL_ERROR(rc))
2720 return rc;
2721
2722 rc = sensor_set_banding_filter(ov, bandingfilter);
2723 if (FATAL_ERROR(rc))
2724 return rc;
2725
2726 if (ov->lightfreq) {
2727 rc = sensor_set_light_freq(ov, lightfreq);
2728 if (FATAL_ERROR(rc))
2729 return rc;
2730 }
2731
2732 rc = sensor_set_backlight(ov, ov->backlight);
2733 if (FATAL_ERROR(rc))
2734 return rc;
2735
2736 rc = sensor_set_mirror(ov, ov->mirror);
2737 if (FATAL_ERROR(rc))
2738 return rc;
2739
2740 return 0;
2741 }
2742
2743 /* This sets the default image parameters. This is useful for apps that use
2744 * read() and do not set these.
2745 */
2746 static int
2747 ov51x_set_default_params(struct usb_ov511 *ov)
2748 {
2749 int i;
2750
2751 /* Set default sizes in case IOCTL (VIDIOCMCAPTURE) is not used
2752 * (using read() instead). */
2753 for (i = 0; i < OV511_NUMFRAMES; i++) {
2754 ov->frame[i].width = ov->maxwidth;
2755 ov->frame[i].height = ov->maxheight;
2756 ov->frame[i].bytes_read = 0;
2757 if (force_palette)
2758 ov->frame[i].format = force_palette;
2759 else
2760 ov->frame[i].format = VIDEO_PALETTE_YUV420;
2761
2762 ov->frame[i].depth = get_depth(ov->frame[i].format);
2763 }
2764
2765 PDEBUG(3, "%dx%d, %s", ov->maxwidth, ov->maxheight,
2766 symbolic(v4l1_plist, ov->frame[0].format));
2767
2768 /* Initialize to max width/height, YUV420 or RGB24 (if supported) */
2769 if (mode_init_regs(ov, ov->maxwidth, ov->maxheight,
2770 ov->frame[0].format, 0) < 0)
2771 return -EINVAL;
2772
2773 return 0;
2774 }
2775
2776 /**********************************************************************
2777 *
2778 * Video decoder stuff
2779 *
2780 **********************************************************************/
2781
2782 /* Set analog input port of decoder */
2783 static int
2784 decoder_set_input(struct usb_ov511 *ov, int input)
2785 {
2786 PDEBUG(4, "port %d", input);
2787
2788 switch (ov->sensor) {
2789 case SEN_SAA7111A:
2790 {
2791 /* Select mode */
2792 i2c_w_mask(ov, 0x02, input, 0x07);
2793 /* Bypass chrominance trap for modes 4..7 */
2794 i2c_w_mask(ov, 0x09, (input > 3) ? 0x80:0x00, 0x80);
2795 break;
2796 }
2797 default:
2798 return -EINVAL;
2799 }
2800
2801 return 0;
2802 }
2803
2804 /* Get ASCII name of video input */
2805 static int
2806 decoder_get_input_name(struct usb_ov511 *ov, int input, char *name)
2807 {
2808 switch (ov->sensor) {
2809 case SEN_SAA7111A:
2810 {
2811 if (input < 0 || input > 7)
2812 return -EINVAL;
2813 else if (input < 4)
2814 sprintf(name, "CVBS-%d", input);
2815 else // if (input < 8)
2816 sprintf(name, "S-Video-%d", input - 4);
2817 break;
2818 }
2819 default:
2820 sprintf(name, "%s", "Camera");
2821 }
2822
2823 return 0;
2824 }
2825
2826 /* Set norm (NTSC, PAL, SECAM, AUTO) */
2827 static int
2828 decoder_set_norm(struct usb_ov511 *ov, int norm)
2829 {
2830 PDEBUG(4, "%d", norm);
2831
2832 switch (ov->sensor) {
2833 case SEN_SAA7111A:
2834 {
2835 int reg_8, reg_e;
2836
2837 if (norm == VIDEO_MODE_NTSC) {
2838 reg_8 = 0x40; /* 60 Hz */
2839 reg_e = 0x00; /* NTSC M / PAL BGHI */
2840 } else if (norm == VIDEO_MODE_PAL) {
2841 reg_8 = 0x00; /* 50 Hz */
2842 reg_e = 0x00; /* NTSC M / PAL BGHI */
2843 } else if (norm == VIDEO_MODE_AUTO) {
2844 reg_8 = 0x80; /* Auto field detect */
2845 reg_e = 0x00; /* NTSC M / PAL BGHI */
2846 } else if (norm == VIDEO_MODE_SECAM) {
2847 reg_8 = 0x00; /* 50 Hz */
2848 reg_e = 0x50; /* SECAM / PAL 4.43 */
2849 } else {
2850 return -EINVAL;
2851 }
2852
2853 i2c_w_mask(ov, 0x08, reg_8, 0xc0);
2854 i2c_w_mask(ov, 0x0e, reg_e, 0x70);
2855 break;
2856 }
2857 default:
2858 return -EINVAL;
2859 }
2860
2861 return 0;
2862 }
2863
2864 /**********************************************************************
2865 *
2866 * Raw data parsing
2867 *
2868 **********************************************************************/
2869
2870 /* Copies a 64-byte segment at pIn to an 8x8 block at pOut. The width of the
2871 * image at pOut is specified by w.
2872 */
2873 static inline void
2874 make_8x8(unsigned char *pIn, unsigned char *pOut, int w)
2875 {
2876 unsigned char *pOut1 = pOut;
2877 int x, y;
2878
2879 for (y = 0; y < 8; y++) {
2880 pOut1 = pOut;
2881 for (x = 0; x < 8; x++) {
2882 *pOut1++ = *pIn++;
2883 }
2884 pOut += w;
2885 }
2886 }
2887
2888 /*
2889 * For RAW BW (YUV 4:0:0) images, data show up in 256 byte segments.
2890 * The segments represent 4 squares of 8x8 pixels as follows:
2891 *
2892 * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199
2893 * 8 9 ... 15 72 73 ... 79 200 201 ... 207
2894 * ... ... ...
2895 * 56 57 ... 63 120 121 ... 127 248 249 ... 255
2896 *
2897 */
2898 static void
2899 yuv400raw_to_yuv400p(struct ov511_frame *frame,
2900 unsigned char *pIn0, unsigned char *pOut0)
2901 {
2902 int x, y;
2903 unsigned char *pIn, *pOut, *pOutLine;
2904
2905 /* Copy Y */
2906 pIn = pIn0;
2907 pOutLine = pOut0;
2908 for (y = 0; y < frame->rawheight - 1; y += 8) {
2909 pOut = pOutLine;
2910 for (x = 0; x < frame->rawwidth - 1; x += 8) {
2911 make_8x8(pIn, pOut, frame->rawwidth);
2912 pIn += 64;
2913 pOut += 8;
2914 }
2915 pOutLine += 8 * frame->rawwidth;
2916 }
2917 }
2918
2919 /*
2920 * For YUV 4:2:0 images, the data show up in 384 byte segments.
2921 * The first 64 bytes of each segment are U, the next 64 are V. The U and
2922 * V are arranged as follows:
2923 *
2924 * 0 1 ... 7
2925 * 8 9 ... 15
2926 * ...
2927 * 56 57 ... 63
2928 *
2929 * U and V are shipped at half resolution (1 U,V sample -> one 2x2 block).
2930 *
2931 * The next 256 bytes are full resolution Y data and represent 4 squares
2932 * of 8x8 pixels as follows:
2933 *
2934 * 0 1 ... 7 64 65 ... 71 ... 192 193 ... 199
2935 * 8 9 ... 15 72 73 ... 79 200 201 ... 207
2936 * ... ... ...
2937 * 56 57 ... 63 120 121 ... 127 ... 248 249 ... 255
2938 *
2939 * Note that the U and V data in one segment represent a 16 x 16 pixel
2940 * area, but the Y data represent a 32 x 8 pixel area. If the width is not an
2941 * even multiple of 32, the extra 8x8 blocks within a 32x8 block belong to the
2942 * next horizontal stripe.
2943 *
2944 * If dumppix module param is set, _parse_data just dumps the incoming segments,
2945 * verbatim, in order, into the frame. When used with vidcat -f ppm -s 640x480
2946 * this puts the data on the standard output and can be analyzed with the
2947 * parseppm.c utility I wrote. That's a much faster way for figuring out how
2948 * these data are scrambled.
2949 */
2950
2951 /* Converts from raw, uncompressed segments at pIn0 to a YUV420P frame at pOut0.
2952 *
2953 * FIXME: Currently only handles width and height that are multiples of 16
2954 */
2955 static void
2956 yuv420raw_to_yuv420p(struct ov511_frame *frame,
2957 unsigned char *pIn0, unsigned char *pOut0)
2958 {
2959 int k, x, y;
2960 unsigned char *pIn, *pOut, *pOutLine;
2961 const unsigned int a = frame->rawwidth * frame->rawheight;
2962 const unsigned int w = frame->rawwidth / 2;
2963
2964 /* Copy U and V */
2965 pIn = pIn0;
2966 pOutLine = pOut0 + a;
2967 for (y = 0; y < frame->rawheight - 1; y += 16) {
2968 pOut = pOutLine;
2969 for (x = 0; x < frame->rawwidth - 1; x += 16) {
2970 make_8x8(pIn, pOut, w);
2971 make_8x8(pIn + 64, pOut + a/4, w);
2972 pIn += 384;
2973 pOut += 8;
2974 }
2975 pOutLine += 8 * w;
2976 }
2977
2978 /* Copy Y */
2979 pIn = pIn0 + 128;
2980 pOutLine = pOut0;
2981 k = 0;
2982 for (y = 0; y < frame->rawheight - 1; y += 8) {
2983 pOut = pOutLine;
2984 for (x = 0; x < frame->rawwidth - 1; x += 8) {
2985 make_8x8(pIn, pOut, frame->rawwidth);
2986 pIn += 64;
2987 pOut += 8;
2988 if ((++k) > 3) {
2989 k = 0;
2990 pIn += 128;
2991 }
2992 }
2993 pOutLine += 8 * frame->rawwidth;
2994 }
2995 }
2996
2997 /**********************************************************************
2998 *
2999 * Decompression
3000 *
3001 **********************************************************************/
3002
3003 static int
3004 request_decompressor(struct usb_ov511 *ov)
3005 {
3006 if (ov->bclass == BCL_OV511 || ov->bclass == BCL_OV518) {
3007 err("No decompressor available");
3008 } else {
3009 err("Unknown bridge");
3010 }
3011
3012 return -ENOSYS;
3013 }
3014
3015 static void
3016 decompress(struct usb_ov511 *ov, struct ov511_frame *frame,
3017 unsigned char *pIn0, unsigned char *pOut0)
3018 {
3019 if (!ov->decomp_ops)
3020 if (request_decompressor(ov))
3021 return;
3022
3023 }
3024
3025 /**********************************************************************
3026 *
3027 * Format conversion
3028 *
3029 **********************************************************************/
3030
3031 /* Fuses even and odd fields together, and doubles width.
3032 * INPUT: an odd field followed by an even field at pIn0, in YUV planar format
3033 * OUTPUT: a normal YUV planar image, with correct aspect ratio
3034 */
3035 static void
3036 deinterlace(struct ov511_frame *frame, int rawformat,
3037 unsigned char *pIn0, unsigned char *pOut0)
3038 {
3039 const int fieldheight = frame->rawheight / 2;
3040 const int fieldpix = fieldheight * frame->rawwidth;
3041 const int w = frame->width;
3042 int x, y;
3043 unsigned char *pInEven, *pInOdd, *pOut;
3044
3045 PDEBUG(5, "fieldheight=%d", fieldheight);
3046
3047 if (frame->rawheight != frame->height) {
3048 err("invalid height");
3049 return;
3050 }
3051
3052 if ((frame->rawwidth * 2) != frame->width) {
3053 err("invalid width");
3054 return;
3055 }
3056
3057 /* Y */
3058 pInOdd = pIn0;
3059 pInEven = pInOdd + fieldpix;
3060 pOut = pOut0;
3061 for (y = 0; y < fieldheight; y++) {
3062 for (x = 0; x < frame->rawwidth; x++) {
3063 *pOut = *pInEven;
3064 *(pOut+1) = *pInEven++;
3065 *(pOut+w) = *pInOdd;
3066 *(pOut+w+1) = *pInOdd++;
3067 pOut += 2;
3068 }
3069 pOut += w;
3070 }
3071
3072 if (rawformat == RAWFMT_YUV420) {
3073 /* U */
3074 pInOdd = pIn0 + fieldpix * 2;
3075 pInEven = pInOdd + fieldpix / 4;
3076 for (y = 0; y < fieldheight / 2; y++) {
3077 for (x = 0; x < frame->rawwidth / 2; x++) {
3078 *pOut = *pInEven;
3079 *(pOut+1) = *pInEven++;
3080 *(pOut+w/2) = *pInOdd;
3081 *(pOut+w/2+1) = *pInOdd++;
3082 pOut += 2;
3083 }
3084 pOut += w/2;
3085 }
3086 /* V */
3087 pInOdd = pIn0 + fieldpix * 2 + fieldpix / 2;
3088 pInEven = pInOdd + fieldpix / 4;
3089 for (y = 0; y < fieldheight / 2; y++) {
3090 for (x = 0; x < frame->rawwidth / 2; x++) {
3091 *pOut = *pInEven;
3092 *(pOut+1) = *pInEven++;
3093 *(pOut+w/2) = *pInOdd;
3094 *(pOut+w/2+1) = *pInOdd++;
3095 pOut += 2;
3096 }
3097 pOut += w/2;
3098 }
3099 }
3100 }
3101
3102 static void
3103 ov51x_postprocess_grey(struct usb_ov511 *ov, struct ov511_frame *frame)
3104 {
3105 /* Deinterlace frame, if necessary */
3106 if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) {
3107 if (frame->compressed)
3108 decompress(ov, frame, frame->rawdata,
3109 frame->tempdata);
3110 else
3111 yuv400raw_to_yuv400p(frame, frame->rawdata,
3112 frame->tempdata);
3113
3114 deinterlace(frame, RAWFMT_YUV400, frame->tempdata,
3115 frame->data);
3116 } else {
3117 if (frame->compressed)
3118 decompress(ov, frame, frame->rawdata,
3119 frame->data);
3120 else
3121 yuv400raw_to_yuv400p(frame, frame->rawdata,
3122 frame->data);
3123 }
3124 }
3125
3126 /* Process raw YUV420 data into standard YUV420P */
3127 static void
3128 ov51x_postprocess_yuv420(struct usb_ov511 *ov, struct ov511_frame *frame)
3129 {
3130 /* Deinterlace frame, if necessary */
3131 if (ov->sensor == SEN_SAA7111A && frame->rawheight >= 480) {
3132 if (frame->compressed)
3133 decompress(ov, frame, frame->rawdata, frame->tempdata);
3134 else
3135 yuv420raw_to_yuv420p(frame, frame->rawdata,
3136 frame->tempdata);
3137
3138 deinterlace(frame, RAWFMT_YUV420, frame->tempdata,
3139 frame->data);
3140 } else {
3141 if (frame->compressed)
3142 decompress(ov, frame, frame->rawdata, frame->data);
3143 else
3144 yuv420raw_to_yuv420p(frame, frame->rawdata,
3145 frame->data);
3146 }
3147 }
3148
3149 /* Post-processes the specified frame. This consists of:
3150 * 1. Decompress frame, if necessary
3151 * 2. Deinterlace frame and scale to proper size, if necessary
3152 * 3. Convert from YUV planar to destination format, if necessary
3153 * 4. Fix the RGB offset, if necessary
3154 */
3155 static void
3156 ov51x_postprocess(struct usb_ov511 *ov, struct ov511_frame *frame)
3157 {
3158 if (dumppix) {
3159 memset(frame->data, 0,
3160 MAX_DATA_SIZE(ov->maxwidth, ov->maxheight));
3161 PDEBUG(4, "Dumping %d bytes", frame->bytes_recvd);
3162 memcpy(frame->data, frame->rawdata, frame->bytes_recvd);
3163 } else {
3164 switch (frame->format) {
3165 case VIDEO_PALETTE_GREY:
3166 ov51x_postprocess_grey(ov, frame);
3167 break;
3168 case VIDEO_PALETTE_YUV420:
3169 case VIDEO_PALETTE_YUV420P:
3170 ov51x_postprocess_yuv420(ov, frame);
3171 break;
3172 default:
3173 err("Cannot convert data to %s",
3174 symbolic(v4l1_plist, frame->format));
3175 }
3176 }
3177 }
3178
3179 /**********************************************************************
3180 *
3181 * OV51x data transfer, IRQ handler
3182 *
3183 **********************************************************************/
3184
3185 static inline void
3186 ov511_move_data(struct usb_ov511 *ov, unsigned char *in, int n)
3187 {
3188 int num, offset;
3189 int pnum = in[ov->packet_size - 1]; /* Get packet number */
3190 int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight);
3191 struct ov511_frame *frame = &ov->frame[ov->curframe];
3192 struct timeval *ts;
3193
3194 /* SOF/EOF packets have 1st to 8th bytes zeroed and the 9th
3195 * byte non-zero. The EOF packet has image width/height in the
3196 * 10th and 11th bytes. The 9th byte is given as follows:
3197 *
3198 * bit 7: EOF
3199 * 6: compression enabled
3200 * 5: 422/420/400 modes
3201 * 4: 422/420/400 modes
3202 * 3: 1
3203 * 2: snapshot button on
3204 * 1: snapshot frame
3205 * 0: even/odd field
3206 */
3207
3208 if (printph) {
3209 info("ph(%3d): %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x %2x",
3210 pnum, in[0], in[1], in[2], in[3], in[4], in[5], in[6],
3211 in[7], in[8], in[9], in[10], in[11]);
3212 }
3213
3214 /* Check for SOF/EOF packet */
3215 if ((in[0] | in[1] | in[2] | in[3] | in[4] | in[5] | in[6] | in[7]) ||
3216 (~in[8] & 0x08))
3217 goto check_middle;
3218
3219 /* Frame end */
3220 if (in[8] & 0x80) {
3221 ts = (struct timeval *)(frame->data
3222 + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight));
3223 do_gettimeofday(ts);
3224
3225 /* Get the actual frame size from the EOF header */
3226 frame->rawwidth = ((int)(in[9]) + 1) * 8;
3227 frame->rawheight = ((int)(in[10]) + 1) * 8;
3228
3229 PDEBUG(4, "Frame end, frame=%d, pnum=%d, w=%d, h=%d, recvd=%d",
3230 ov->curframe, pnum, frame->rawwidth, frame->rawheight,
3231 frame->bytes_recvd);
3232
3233 /* Validate the header data */
3234 RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth);
3235 RESTRICT_TO_RANGE(frame->rawheight, ov->minheight,
3236 ov->maxheight);
3237
3238 /* Don't allow byte count to exceed buffer size */
3239 RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw);
3240
3241 if (frame->scanstate == STATE_LINES) {
3242 int nextf;
3243
3244 frame->grabstate = FRAME_DONE;
3245 wake_up_interruptible(&frame->wq);
3246
3247 /* If next frame is ready or grabbing,
3248 * point to it */
3249 nextf = (ov->curframe + 1) % OV511_NUMFRAMES;
3250 if (ov->frame[nextf].grabstate == FRAME_READY
3251 || ov->frame[nextf].grabstate == FRAME_GRABBING) {
3252 ov->curframe = nextf;
3253 ov->frame[nextf].scanstate = STATE_SCANNING;
3254 } else {
3255 if (frame->grabstate == FRAME_DONE) {
3256 PDEBUG(4, "** Frame done **");
3257 } else {
3258 PDEBUG(4, "Frame not ready? state = %d",
3259 ov->frame[nextf].grabstate);
3260 }
3261
3262 ov->curframe = -1;
3263 }
3264 } else {
3265 PDEBUG(5, "Frame done, but not scanning");
3266 }
3267 /* Image corruption caused by misplaced frame->segment = 0
3268 * fixed by carlosf@conectiva.com.br
3269 */
3270 } else {
3271 /* Frame start */
3272 PDEBUG(4, "Frame start, framenum = %d", ov->curframe);
3273
3274 /* Check to see if it's a snapshot frame */
3275 /* FIXME?? Should the snapshot reset go here? Performance? */
3276 if (in[8] & 0x02) {
3277 frame->snapshot = 1;
3278 PDEBUG(3, "snapshot detected");
3279 }
3280
3281 frame->scanstate = STATE_LINES;
3282 frame->bytes_recvd = 0;
3283 frame->compressed = in[8] & 0x40;
3284 }
3285
3286 check_middle:
3287 /* Are we in a frame? */
3288 if (frame->scanstate != STATE_LINES) {
3289 PDEBUG(5, "Not in a frame; packet skipped");
3290 return;
3291 }
3292
3293 /* If frame start, skip header */
3294 if (frame->bytes_recvd == 0)
3295 offset = 9;
3296 else
3297 offset = 0;
3298
3299 num = n - offset - 1;
3300
3301 /* Dump all data exactly as received */
3302 if (dumppix == 2) {
3303 frame->bytes_recvd += n - 1;
3304 if (frame->bytes_recvd <= max_raw)
3305 memcpy(frame->rawdata + frame->bytes_recvd - (n - 1),
3306 in, n - 1);
3307 else
3308 PDEBUG(3, "Raw data buffer overrun!! (%d)",
3309 frame->bytes_recvd - max_raw);
3310 } else if (!frame->compressed && !remove_zeros) {
3311 frame->bytes_recvd += num;
3312 if (frame->bytes_recvd <= max_raw)
3313 memcpy(frame->rawdata + frame->bytes_recvd - num,
3314 in + offset, num);
3315 else
3316 PDEBUG(3, "Raw data buffer overrun!! (%d)",
3317 frame->bytes_recvd - max_raw);
3318 } else { /* Remove all-zero FIFO lines (aligned 32-byte blocks) */
3319 int b, read = 0, allzero, copied = 0;
3320 if (offset) {
3321 frame->bytes_recvd += 32 - offset; // Bytes out
3322 memcpy(frame->rawdata, in + offset, 32 - offset);
3323 read += 32;
3324 }
3325
3326 while (read < n - 1) {
3327 allzero = 1;
3328 for (b = 0; b < 32; b++) {
3329 if (in[read + b]) {
3330 allzero = 0;
3331 break;
3332 }
3333 }
3334
3335 if (allzero) {
3336 /* Don't copy it */
3337 } else {
3338 if (frame->bytes_recvd + copied + 32 <= max_raw)
3339 {
3340 memcpy(frame->rawdata
3341 + frame->bytes_recvd + copied,
3342 in + read, 32);
3343 copied += 32;
3344 } else {
3345 PDEBUG(3, "Raw data buffer overrun!!");
3346 }
3347 }
3348 read += 32;
3349 }
3350
3351 frame->bytes_recvd += copied;
3352 }
3353 }
3354
3355 static inline void
3356 ov518_move_data(struct usb_ov511 *ov, unsigned char *in, int n)
3357 {
3358 int max_raw = MAX_RAW_DATA_SIZE(ov->maxwidth, ov->maxheight);
3359 struct ov511_frame *frame = &ov->frame[ov->curframe];
3360 struct timeval *ts;
3361
3362 /* Don't copy the packet number byte */
3363 if (ov->packet_numbering)
3364 --n;
3365
3366 /* A false positive here is likely, until OVT gives me
3367 * the definitive SOF/EOF format */
3368 if ((!(in[0] | in[1] | in[2] | in[3] | in[5])) && in[6]) {
3369 if (printph) {
3370 info("ph: %2x %2x %2x %2x %2x %2x %2x %2x", in[0],
3371 in[1], in[2], in[3], in[4], in[5], in[6], in[7]);
3372 }
3373
3374 if (frame->scanstate == STATE_LINES) {
3375 PDEBUG(4, "Detected frame end/start");
3376 goto eof;
3377 } else { //scanstate == STATE_SCANNING
3378 /* Frame start */
3379 PDEBUG(4, "Frame start, framenum = %d", ov->curframe);
3380 goto sof;
3381 }
3382 } else {
3383 goto check_middle;
3384 }
3385
3386 eof:
3387 ts = (struct timeval *)(frame->data
3388 + MAX_FRAME_SIZE(ov->maxwidth, ov->maxheight));
3389 do_gettimeofday(ts);
3390
3391 PDEBUG(4, "Frame end, curframe = %d, hw=%d, vw=%d, recvd=%d",
3392 ov->curframe,
3393 (int)(in[9]), (int)(in[10]), frame->bytes_recvd);
3394
3395 // FIXME: Since we don't know the header formats yet,
3396 // there is no way to know what the actual image size is
3397 frame->rawwidth = frame->width;
3398 frame->rawheight = frame->height;
3399
3400 /* Validate the header data */
3401 RESTRICT_TO_RANGE(frame->rawwidth, ov->minwidth, ov->maxwidth);
3402 RESTRICT_TO_RANGE(frame->rawheight, ov->minheight, ov->maxheight);
3403
3404 /* Don't allow byte count to exceed buffer size */
3405 RESTRICT_TO_RANGE(frame->bytes_recvd, 8, max_raw);
3406
3407 if (frame->scanstate == STATE_LINES) {
3408 int nextf;
3409
3410 frame->grabstate = FRAME_DONE;
3411 wake_up_interruptible(&frame->wq);
3412
3413 /* If next frame is ready or grabbing,
3414 * point to it */
3415 nextf = (ov->curframe + 1) % OV511_NUMFRAMES;
3416 if (ov->frame[nextf].grabstate == FRAME_READY
3417 || ov->frame[nextf].grabstate == FRAME_GRABBING) {
3418 ov->curframe = nextf;
3419 ov->frame[nextf].scanstate = STATE_SCANNING;
3420 frame = &ov->frame[nextf];
3421 } else {
3422 if (frame->grabstate == FRAME_DONE) {
3423 PDEBUG(4, "** Frame done **");
3424 } else {
3425 PDEBUG(4, "Frame not ready? state = %d",
3426 ov->frame[nextf].grabstate);
3427 }
3428
3429 ov->curframe = -1;
3430 PDEBUG(4, "SOF dropped (no active frame)");
3431 return; /* Nowhere to store this frame */
3432 }
3433 }
3434 sof:
3435 PDEBUG(4, "Starting capture on frame %d", frame->framenum);
3436
3437 // Snapshot not reverse-engineered yet.
3438 #if 0
3439 /* Check to see if it's a snapshot frame */
3440 /* FIXME?? Should the snapshot reset go here? Performance? */
3441 if (in[8] & 0x02) {
3442 frame->snapshot = 1;
3443 PDEBUG(3, "snapshot detected");
3444 }
3445 #endif
3446 frame->scanstate = STATE_LINES;
3447 frame->bytes_recvd = 0;
3448 frame->compressed = 1;
3449
3450 check_middle:
3451 /* Are we in a frame? */
3452 if (frame->scanstate != STATE_LINES) {
3453 PDEBUG(4, "scanstate: no SOF yet");
3454 return;
3455 }
3456
3457 /* Dump all data exactly as received */
3458 if (dumppix == 2) {
3459 frame->bytes_recvd += n;
3460 if (frame->bytes_recvd <= max_raw)
3461 memcpy(frame->rawdata + frame->bytes_recvd - n, in, n);
3462 else
3463 PDEBUG(3, "Raw data buffer overrun!! (%d)",
3464 frame->bytes_recvd - max_raw);
3465 } else {
3466 /* All incoming data are divided into 8-byte segments. If the
3467 * segment contains all zero bytes, it must be skipped. These
3468 * zero-segments allow the OV518 to mainain a constant data rate
3469 * regardless of the effectiveness of the compression. Segments
3470 * are aligned relative to the beginning of each isochronous
3471 * packet. The first segment in each image is a header (the
3472 * decompressor skips it later).
3473 */
3474
3475 int b, read = 0, allzero, copied = 0;
3476
3477 while (read < n) {
3478 allzero = 1;
3479 for (b = 0; b < 8; b++) {
3480 if (in[read + b]) {
3481 allzero = 0;
3482 break;
3483 }
3484 }
3485
3486 if (allzero) {
3487 /* Don't copy it */
3488 } else {
3489 if (frame->bytes_recvd + copied + 8 <= max_raw)
3490 {
3491 memcpy(frame->rawdata
3492 + frame->bytes_recvd + copied,
3493 in + read, 8);
3494 copied += 8;
3495 } else {
3496 PDEBUG(3, "Raw data buffer overrun!!");
3497 }
3498 }
3499 read += 8;
3500 }
3501 frame->bytes_recvd += copied;
3502 }
3503 }
3504
3505 static void
3506 ov51x_isoc_irq(struct urb *urb, struct pt_regs *regs)
3507 {
3508 int i;
3509 struct usb_ov511 *ov;
3510 struct ov511_sbuf *sbuf;
3511
3512 if (!urb->context) {
3513 PDEBUG(4, "no context");
3514 return;
3515 }
3516
3517 sbuf = urb->context;
3518 ov = sbuf->ov;
3519
3520 if (!ov || !ov->dev || !ov->user) {
3521 PDEBUG(4, "no device, or not open");
3522 return;
3523 }
3524
3525 if (!ov->streaming) {
3526 PDEBUG(4, "hmmm... not streaming, but got interrupt");
3527 return;
3528 }
3529
3530 if (urb->status == -ENOENT || urb->status == -ECONNRESET) {
3531 PDEBUG(4, "URB unlinked");
3532 return;
3533 }
3534
3535 if (urb->status != -EINPROGRESS && urb->status != 0) {
3536 err("ERROR: urb->status=%d: %s", urb->status,
3537 symbolic(urb_errlist, urb->status));
3538 }
3539
3540 /* Copy the data received into our frame buffer */
3541 PDEBUG(5, "sbuf[%d]: Moving %d packets", sbuf->n,
3542 urb->number_of_packets);
3543 for (i = 0; i < urb->number_of_packets; i++) {
3544 /* Warning: Don't call *_move_data() if no frame active! */
3545 if (ov->curframe >= 0) {
3546 int n = urb->iso_frame_desc[i].actual_length;
3547 int st = urb->iso_frame_desc[i].status;
3548 unsigned char *cdata;
3549
3550 urb->iso_frame_desc[i].actual_length = 0;
3551 urb->iso_frame_desc[i].status = 0;
3552
3553 cdata = urb->transfer_buffer
3554 + urb->iso_frame_desc[i].offset;
3555
3556 if (!n) {
3557 PDEBUG(4, "Zero-length packet");
3558 continue;
3559 }
3560
3561 if (st)
3562 PDEBUG(2, "data error: [%d] len=%d, status=%d",
3563 i, n, st);
3564
3565 if (ov->bclass == BCL_OV511)
3566 ov511_move_data(ov, cdata, n);
3567 else if (ov->bclass == BCL_OV518)
3568 ov518_move_data(ov, cdata, n);
3569 else
3570 err("Unknown bridge device (%d)", ov->bridge);
3571
3572 } else if (waitqueue_active(&ov->wq)) {
3573 wake_up_interruptible(&ov->wq);
3574 }
3575 }
3576
3577 /* Resubmit this URB */
3578 urb->dev = ov->dev;
3579 if ((i = usb_submit_urb(urb, GFP_ATOMIC)) != 0)
3580 err("usb_submit_urb() ret %d", i);
3581
3582 return;
3583 }
3584
3585 /****************************************************************************
3586 *
3587 * Stream initialization and termination
3588 *
3589 ***************************************************************************/
3590
3591 static int
3592 ov51x_init_isoc(struct usb_ov511 *ov)
3593 {
3594 struct urb *urb;
3595 int fx, err, n, size;
3596
3597 PDEBUG(3, "*** Initializing capture ***");
3598
3599 ov->curframe = -1;
3600
3601 if (ov->bridge == BRG_OV511) {
3602 if (cams == 1)
3603 size = 993;
3604 else if (cams == 2)
3605 size = 513;
3606 else if (cams == 3 || cams == 4)
3607 size = 257;
3608 else {
3609 err("\"cams\" parameter too high!");
3610 return -1;
3611 }
3612 } else if (ov->bridge == BRG_OV511PLUS) {
3613 if (cams == 1)
3614 size = 961;
3615 else if (cams == 2)
3616 size = 513;
3617 else if (cams == 3 || cams == 4)
3618 size = 257;
3619 else if (cams >= 5 && cams <= 8)
3620 size = 129;
3621 else if (cams >= 9 && cams <= 31)
3622 size = 33;
3623 else {
3624 err("\"cams\" parameter too high!");
3625 return -1;
3626 }
3627 } else if (ov->bclass == BCL_OV518) {
3628 if (cams == 1)
3629 size = 896;
3630 else if (cams == 2)
3631 size = 512;
3632 else if (cams == 3 || cams == 4)
3633 size = 256;
3634 else if (cams >= 5 && cams <= 8)
3635 size = 128;
3636 else {
3637 err("\"cams\" parameter too high!");
3638 return -1;
3639 }
3640 } else {
3641 err("invalid bridge type");
3642 return -1;
3643 }
3644
3645 // FIXME: OV518 is hardcoded to 15 FPS (alternate 5) for now
3646 if (ov->bclass == BCL_OV518) {
3647 if (packetsize == -1) {
3648 ov518_set_packet_size(ov, 640);
3649 } else {
3650 info("Forcing packet size to %d", packetsize);
3651 ov518_set_packet_size(ov, packetsize);
3652 }
3653 } else {
3654 if (packetsize == -1) {
3655 ov511_set_packet_size(ov, size);
3656 } else {
3657 info("Forcing packet size to %d", packetsize);
3658 ov511_set_packet_size(ov, packetsize);
3659 }
3660 }
3661
3662 for (n = 0; n < OV511_NUMSBUF; n++) {
3663 urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
3664 if (!urb) {
3665 err("init isoc: usb_alloc_urb ret. NULL");
3666 return -ENOMEM;
3667 }
3668 ov->sbuf[n].urb = urb;
3669 urb->dev = ov->dev;
3670 urb->context = &ov->sbuf[n];
3671 urb->pipe = usb_rcvisocpipe(ov->dev, OV511_ENDPOINT_ADDRESS);
3672 urb->transfer_flags = URB_ISO_ASAP;
3673 urb->transfer_buffer = ov->sbuf[n].data;
3674 urb->complete = ov51x_isoc_irq;
3675 urb->number_of_packets = FRAMES_PER_DESC;
3676 urb->transfer_buffer_length = ov->packet_size * FRAMES_PER_DESC;
3677 urb->interval = 1;
3678 for (fx = 0; fx < FRAMES_PER_DESC; fx++) {
3679 urb->iso_frame_desc[fx].offset = ov->packet_size * fx;
3680 urb->iso_frame_desc[fx].length = ov->packet_size;
3681 }
3682 }
3683
3684 ov->streaming = 1;
3685
3686 for (n = 0; n < OV511_NUMSBUF; n++) {
3687 ov->sbuf[n].urb->dev = ov->dev;
3688 err = usb_submit_urb(ov->sbuf[n].urb, GFP_KERNEL);
3689 if (err) {
3690 err("init isoc: usb_submit_urb(%d) ret %d", n, err);
3691 return err;
3692 }
3693 }
3694
3695 return 0;
3696 }
3697
3698 static void
3699 ov51x_unlink_isoc(struct usb_ov511 *ov)
3700 {
3701 int n;
3702
3703 /* Unschedule all of the iso td's */
3704 for (n = OV511_NUMSBUF - 1; n >= 0; n--) {
3705 if (ov->sbuf[n].urb) {
3706 usb_kill_urb(ov->sbuf[n].urb);
3707 usb_free_urb(ov->sbuf[n].urb);
3708 ov->sbuf[n].urb = NULL;
3709 }
3710 }
3711 }
3712
3713 static void
3714 ov51x_stop_isoc(struct usb_ov511 *ov)
3715 {
3716 if (!ov->streaming || !ov->dev)
3717 return;
3718
3719 PDEBUG(3, "*** Stopping capture ***");
3720
3721 if (ov->bclass == BCL_OV518)
3722 ov518_set_packet_size(ov, 0);
3723 else
3724 ov511_set_packet_size(ov, 0);
3725
3726 ov->streaming = 0;
3727
3728 ov51x_unlink_isoc(ov);
3729 }
3730
3731 static int
3732 ov51x_new_frame(struct usb_ov511 *ov, int framenum)
3733 {
3734 struct ov511_frame *frame;
3735 int newnum;
3736
3737 PDEBUG(4, "ov->curframe = %d, framenum = %d", ov->curframe, framenum);
3738
3739 if (!ov->dev)
3740 return -1;
3741
3742 /* If we're not grabbing a frame right now and the other frame is */
3743 /* ready to be grabbed into, then use it instead */
3744 if (ov->curframe == -1) {
3745 newnum = (framenum - 1 + OV511_NUMFRAMES) % OV511_NUMFRAMES;
3746 if (ov->frame[newnum].grabstate == FRAME_READY)
3747 framenum = newnum;
3748 } else
3749 return 0;
3750
3751 frame = &ov->frame[framenum];
3752
3753 PDEBUG(4, "framenum = %d, width = %d, height = %d", framenum,
3754 frame->width, frame->height);
3755
3756 frame->grabstate = FRAME_GRABBING;
3757 frame->scanstate = STATE_SCANNING;
3758 frame->snapshot = 0;
3759
3760 ov->curframe = framenum;
3761
3762 /* Make sure it's not too big */
3763 if (frame->width > ov->maxwidth)
3764 frame->width = ov->maxwidth;
3765
3766 frame->width &= ~7L; /* Multiple of 8 */
3767
3768 if (frame->height > ov->maxheight)
3769 frame->height = ov->maxheight;
3770
3771 frame->height &= ~3L; /* Multiple of 4 */
3772
3773 return 0;
3774 }
3775
3776 /****************************************************************************
3777 *
3778 * Buffer management
3779 *
3780 ***************************************************************************/
3781
3782 /*
3783 * - You must acquire buf_lock before entering this function.
3784 * - Because this code will free any non-null pointer, you must be sure to null
3785 * them if you explicitly free them somewhere else!
3786 */
3787 static void
3788 ov51x_do_dealloc(struct usb_ov511 *ov)
3789 {
3790 int i;
3791 PDEBUG(4, "entered");
3792
3793 if (ov->fbuf) {
3794 rvfree(ov->fbuf, OV511_NUMFRAMES
3795 * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight));
3796 ov->fbuf = NULL;
3797 }
3798
3799 vfree(ov->rawfbuf);
3800 ov->rawfbuf = NULL;
3801
3802 vfree(ov->tempfbuf);
3803 ov->tempfbuf = NULL;
3804
3805 for (i = 0; i < OV511_NUMSBUF; i++) {
3806 kfree(ov->sbuf[i].data);
3807 ov->sbuf[i].data = NULL;
3808 }
3809
3810 for (i = 0; i < OV511_NUMFRAMES; i++) {
3811 ov->frame[i].data = NULL;
3812 ov->frame[i].rawdata = NULL;
3813 ov->frame[i].tempdata = NULL;
3814 if (ov->frame[i].compbuf) {
3815 free_page((unsigned long) ov->frame[i].compbuf);
3816 ov->frame[i].compbuf = NULL;
3817 }
3818 }
3819
3820 PDEBUG(4, "buffer memory deallocated");
3821 ov->buf_state = BUF_NOT_ALLOCATED;
3822 PDEBUG(4, "leaving");
3823 }
3824
3825 static int
3826 ov51x_alloc(struct usb_ov511 *ov)
3827 {
3828 int i;
3829 const int w = ov->maxwidth;
3830 const int h = ov->maxheight;
3831 const int data_bufsize = OV511_NUMFRAMES * MAX_DATA_SIZE(w, h);
3832 const int raw_bufsize = OV511_NUMFRAMES * MAX_RAW_DATA_SIZE(w, h);
3833
3834 PDEBUG(4, "entered");
3835 mutex_lock(&ov->buf_lock);
3836
3837 if (ov->buf_state == BUF_ALLOCATED)
3838 goto out;
3839
3840 ov->fbuf = rvmalloc(data_bufsize);
3841 if (!ov->fbuf)
3842 goto error;
3843
3844 ov->rawfbuf = vmalloc(raw_bufsize);
3845 if (!ov->rawfbuf)
3846 goto error;
3847
3848 memset(ov->rawfbuf, 0, raw_bufsize);
3849
3850 ov->tempfbuf = vmalloc(raw_bufsize);
3851 if (!ov->tempfbuf)
3852 goto error;
3853
3854 memset(ov->tempfbuf, 0, raw_bufsize);
3855
3856 for (i = 0; i < OV511_NUMSBUF; i++) {
3857 ov->sbuf[i].data = kmalloc(FRAMES_PER_DESC *
3858 MAX_FRAME_SIZE_PER_DESC, GFP_KERNEL);
3859 if (!ov->sbuf[i].data)
3860 goto error;
3861
3862 PDEBUG(4, "sbuf[%d] @ %p", i, ov->sbuf[i].data);
3863 }
3864
3865 for (i = 0; i < OV511_NUMFRAMES; i++) {
3866 ov->frame[i].data = ov->fbuf + i * MAX_DATA_SIZE(w, h);
3867 ov->frame[i].rawdata = ov->rawfbuf
3868 + i * MAX_RAW_DATA_SIZE(w, h);
3869 ov->frame[i].tempdata = ov->tempfbuf
3870 + i * MAX_RAW_DATA_SIZE(w, h);
3871
3872 ov->frame[i].compbuf =
3873 (unsigned char *) __get_free_page(GFP_KERNEL);
3874 if (!ov->frame[i].compbuf)
3875 goto error;
3876
3877 PDEBUG(4, "frame[%d] @ %p", i, ov->frame[i].data);
3878 }
3879
3880 ov->buf_state = BUF_ALLOCATED;
3881 out:
3882 mutex_unlock(&ov->buf_lock);
3883 PDEBUG(4, "leaving");
3884 return 0;
3885 error:
3886 ov51x_do_dealloc(ov);
3887 mutex_unlock(&ov->buf_lock);
3888 PDEBUG(4, "errored");
3889 return -ENOMEM;
3890 }
3891
3892 static void
3893 ov51x_dealloc(struct usb_ov511 *ov)
3894 {
3895 PDEBUG(4, "entered");
3896 mutex_lock(&ov->buf_lock);
3897 ov51x_do_dealloc(ov);
3898 mutex_unlock(&ov->buf_lock);
3899 PDEBUG(4, "leaving");
3900 }
3901
3902 /****************************************************************************
3903 *
3904 * V4L 1 API
3905 *
3906 ***************************************************************************/
3907
3908 static int
3909 ov51x_v4l1_open(struct inode *inode, struct file *file)
3910 {
3911 struct video_device *vdev = video_devdata(file);
3912 struct usb_ov511 *ov = video_get_drvdata(vdev);
3913 int err, i;
3914
3915 PDEBUG(4, "opening");
3916
3917 mutex_lock(&ov->lock);
3918
3919 err = -EBUSY;
3920 if (ov->user)
3921 goto out;
3922
3923 ov->sub_flag = 0;
3924
3925 /* In case app doesn't set them... */
3926 err = ov51x_set_default_params(ov);
3927 if (err < 0)
3928 goto out;
3929
3930 /* Make sure frames are reset */
3931 for (i = 0; i < OV511_NUMFRAMES; i++) {
3932 ov->frame[i].grabstate = FRAME_UNUSED;
3933 ov->frame[i].bytes_read = 0;
3934 }
3935
3936 /* If compression is on, make sure now that a
3937 * decompressor can be loaded */
3938 if (ov->compress && !ov->decomp_ops) {
3939 err = request_decompressor(ov);
3940 if (err && !dumppix)
3941 goto out;
3942 }
3943
3944 err = ov51x_alloc(ov);
3945 if (err < 0)
3946 goto out;
3947
3948 err = ov51x_init_isoc(ov);
3949 if (err) {
3950 ov51x_dealloc(ov);
3951 goto out;
3952 }
3953
3954 ov->user++;
3955 file->private_data = vdev;
3956
3957 if (ov->led_policy == LED_AUTO)
3958 ov51x_led_control(ov, 1);
3959
3960 out:
3961 mutex_unlock(&ov->lock);
3962 return err;
3963 }
3964
3965 static int
3966 ov51x_v4l1_close(struct inode *inode, struct file *file)
3967 {
3968 struct video_device *vdev = file->private_data;
3969 struct usb_ov511 *ov = video_get_drvdata(vdev);
3970
3971 PDEBUG(4, "ov511_close");
3972
3973 mutex_lock(&ov->lock);
3974
3975 ov->user--;
3976 ov51x_stop_isoc(ov);
3977
3978 if (ov->led_policy == LED_AUTO)
3979 ov51x_led_control(ov, 0);
3980
3981 if (ov->dev)
3982 ov51x_dealloc(ov);
3983
3984 mutex_unlock(&ov->lock);
3985
3986 /* Device unplugged while open. Only a minimum of unregistration is done
3987 * here; the disconnect callback already did the rest. */
3988 if (!ov->dev) {
3989 mutex_lock(&ov->cbuf_lock);
3990 kfree(ov->cbuf);
3991 ov->cbuf = NULL;
3992 mutex_unlock(&ov->cbuf_lock);
3993
3994 ov51x_dealloc(ov);
3995 kfree(ov);
3996 ov = NULL;
3997 }
3998
3999 file->private_data = NULL;
4000 return 0;
4001 }
4002
4003 /* Do not call this function directly! */
4004 static int
4005 ov51x_v4l1_ioctl_internal(struct inode *inode, struct file *file,
4006 unsigned int cmd, void *arg)
4007 {
4008 struct video_device *vdev = file->private_data;
4009 struct usb_ov511 *ov = video_get_drvdata(vdev);
4010 PDEBUG(5, "IOCtl: 0x%X", cmd);
4011
4012 if (!ov->dev)
4013 return -EIO;
4014
4015 switch (cmd) {
4016 case VIDIOCGCAP:
4017 {
4018 struct video_capability *b = arg;
4019
4020 PDEBUG(4, "VIDIOCGCAP");
4021
4022 memset(b, 0, sizeof(struct video_capability));
4023 sprintf(b->name, "%s USB Camera",
4024 symbolic(brglist, ov->bridge));
4025 b->type = VID_TYPE_CAPTURE | VID_TYPE_SUBCAPTURE;
4026 b->channels = ov->num_inputs;
4027 b->audios = 0;
4028 b->maxwidth = ov->maxwidth;
4029 b->maxheight = ov->maxheight;
4030 b->minwidth = ov->minwidth;
4031 b->minheight = ov->minheight;
4032
4033 return 0;
4034 }
4035 case VIDIOCGCHAN:
4036 {
4037 struct video_channel *v = arg;
4038
4039 PDEBUG(4, "VIDIOCGCHAN");
4040
4041 if ((unsigned)(v->channel) >= ov->num_inputs) {
4042 err("Invalid channel (%d)", v->channel);
4043 return -EINVAL;
4044 }
4045
4046 v->norm = ov->norm;
4047 v->type = VIDEO_TYPE_CAMERA;
4048 v->flags = 0;
4049 // v->flags |= (ov->has_decoder) ? VIDEO_VC_NORM : 0;
4050 v->tuners = 0;
4051 decoder_get_input_name(ov, v->channel, v->name);
4052
4053 return 0;
4054 }
4055 case VIDIOCSCHAN:
4056 {
4057 struct video_channel *v = arg;
4058 int err;
4059
4060 PDEBUG(4, "VIDIOCSCHAN");
4061
4062 /* Make sure it's not a camera */
4063 if (!ov->has_decoder) {
4064 if (v->channel == 0)
4065 return 0;
4066 else
4067 return -EINVAL;
4068 }
4069
4070 if (v->norm != VIDEO_MODE_PAL &&
4071 v->norm != VIDEO_MODE_NTSC &&
4072 v->norm != VIDEO_MODE_SECAM &&
4073 v->norm != VIDEO_MODE_AUTO) {
4074 err("Invalid norm (%d)", v->norm);
4075 return -EINVAL;
4076 }
4077
4078 if ((unsigned)(v->channel) >= ov->num_inputs) {
4079 err("Invalid channel (%d)", v->channel);
4080 return -EINVAL;
4081 }
4082
4083 err = decoder_set_input(ov, v->channel);
4084 if (err)
4085 return err;
4086
4087 err = decoder_set_norm(ov, v->norm);
4088 if (err)
4089 return err;
4090
4091 return 0;
4092 }
4093 case VIDIOCGPICT:
4094 {
4095 struct video_picture *p = arg;
4096
4097 PDEBUG(4, "VIDIOCGPICT");
4098
4099 memset(p, 0, sizeof(struct video_picture));
4100 if (sensor_get_picture(ov, p))
4101 return -EIO;
4102
4103 /* Can we get these from frame[0]? -claudio? */
4104 p->depth = ov->frame[0].depth;
4105 p->palette = ov->frame[0].format;
4106
4107 return 0;
4108 }
4109 case VIDIOCSPICT:
4110 {
4111 struct video_picture *p = arg;
4112 int i, rc;
4113
4114 PDEBUG(4, "VIDIOCSPICT");
4115
4116 if (!get_depth(p->palette))
4117 return -EINVAL;
4118
4119 if (sensor_set_picture(ov, p))
4120 return -EIO;
4121
4122 if (force_palette && p->palette != force_palette) {
4123 info("Palette rejected (%s)",
4124 symbolic(v4l1_plist, p->palette));
4125 return -EINVAL;
4126 }
4127
4128 // FIXME: Format should be independent of frames
4129 if (p->palette != ov->frame[0].format) {
4130 PDEBUG(4, "Detected format change");
4131
4132 rc = ov51x_wait_frames_inactive(ov);
4133 if (rc)
4134 return rc;
4135
4136 mode_init_regs(ov, ov->frame[0].width,
4137 ov->frame[0].height, p->palette, ov->sub_flag);
4138 }
4139
4140 PDEBUG(4, "Setting depth=%d, palette=%s",
4141 p->depth, symbolic(v4l1_plist, p->palette));
4142
4143 for (i = 0; i < OV511_NUMFRAMES; i++) {
4144 ov->frame[i].depth = p->depth;
4145 ov->frame[i].format = p->palette;
4146 }
4147
4148 return 0;
4149 }
4150 case VIDIOCGCAPTURE:
4151 {
4152 int *vf = arg;
4153
4154 PDEBUG(4, "VIDIOCGCAPTURE");
4155
4156 ov->sub_flag = *vf;
4157 return 0;
4158 }
4159 case VIDIOCSCAPTURE:
4160 {
4161 struct video_capture *vc = arg;
4162
4163 PDEBUG(4, "VIDIOCSCAPTURE");
4164
4165 if (vc->flags)
4166 return -EINVAL;
4167 if (vc->decimation)
4168 return -EINVAL;
4169
4170 vc->x &= ~3L;
4171 vc->y &= ~1L;
4172 vc->y &= ~31L;
4173
4174 if (vc->width == 0)
4175 vc->width = 32;
4176
4177 vc->height /= 16;
4178 vc->height *= 16;
4179 if (vc->height == 0)
4180 vc->height = 16;
4181
4182 ov->subx = vc->x;
4183 ov->suby = vc->y;
4184 ov->subw = vc->width;
4185 ov->subh = vc->height;
4186
4187 return 0;
4188 }
4189 case VIDIOCSWIN:
4190 {
4191 struct video_window *vw = arg;
4192 int i, rc;
4193
4194 PDEBUG(4, "VIDIOCSWIN: %dx%d", vw->width, vw->height);
4195
4196 #if 0
4197 if (vw->flags)
4198 return -EINVAL;
4199 if (vw->clipcount)
4200 return -EINVAL;
4201 if (vw->height != ov->maxheight)
4202 return -EINVAL;
4203 if (vw->width != ov->maxwidth)
4204 return -EINVAL;
4205 #endif
4206
4207 rc = ov51x_wait_frames_inactive(ov);
4208 if (rc)
4209 return rc;
4210
4211 rc = mode_init_regs(ov, vw->width, vw->height,
4212 ov->frame[0].format, ov->sub_flag);
4213 if (rc < 0)
4214 return rc;
4215
4216 for (i = 0; i < OV511_NUMFRAMES; i++) {
4217 ov->frame[i].width = vw->width;
4218 ov->frame[i].height = vw->height;
4219 }
4220
4221 return 0;
4222 }
4223 case VIDIOCGWIN:
4224 {
4225 struct video_window *vw = arg;
4226
4227 memset(vw, 0, sizeof(struct video_window));
4228 vw->x = 0; /* FIXME */
4229 vw->y = 0;
4230 vw->width = ov->frame[0].width;
4231 vw->height = ov->frame[0].height;
4232 vw->flags = 30;
4233
4234 PDEBUG(4, "VIDIOCGWIN: %dx%d", vw->width, vw->height);
4235
4236 return 0;
4237 }
4238 case VIDIOCGMBUF:
4239 {
4240 struct video_mbuf *vm = arg;
4241 int i;
4242
4243 PDEBUG(4, "VIDIOCGMBUF");
4244
4245 memset(vm, 0, sizeof(struct video_mbuf));
4246 vm->size = OV511_NUMFRAMES
4247 * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight);
4248 vm->frames = OV511_NUMFRAMES;
4249
4250 vm->offsets[0] = 0;
4251 for (i = 1; i < OV511_NUMFRAMES; i++) {
4252 vm->offsets[i] = vm->offsets[i-1]
4253 + MAX_DATA_SIZE(ov->maxwidth, ov->maxheight);
4254 }
4255
4256 return 0;
4257 }
4258 case VIDIOCMCAPTURE:
4259 {
4260 struct video_mmap *vm = arg;
4261 int rc, depth;
4262 unsigned int f = vm->frame;
4263
4264 PDEBUG(4, "VIDIOCMCAPTURE: frame: %d, %dx%d, %s", f, vm->width,
4265 vm->height, symbolic(v4l1_plist, vm->format));
4266
4267 depth = get_depth(vm->format);
4268 if (!depth) {
4269 PDEBUG(2, "VIDIOCMCAPTURE: invalid format (%s)",
4270 symbolic(v4l1_plist, vm->format));
4271 return -EINVAL;
4272 }
4273
4274 if (f >= OV511_NUMFRAMES) {
4275 err("VIDIOCMCAPTURE: invalid frame (%d)", f);
4276 return -EINVAL;
4277 }
4278
4279 if (vm->width > ov->maxwidth
4280 || vm->height > ov->maxheight) {
4281 err("VIDIOCMCAPTURE: requested dimensions too big");
4282 return -EINVAL;
4283 }
4284
4285 if (ov->frame[f].grabstate == FRAME_GRABBING) {
4286 PDEBUG(4, "VIDIOCMCAPTURE: already grabbing");
4287 return -EBUSY;
4288 }
4289
4290 if (force_palette && (vm->format != force_palette)) {
4291 PDEBUG(2, "palette rejected (%s)",
4292 symbolic(v4l1_plist, vm->format));
4293 return -EINVAL;
4294 }
4295
4296 if ((ov->frame[f].width != vm->width) ||
4297 (ov->frame[f].height != vm->height) ||
4298 (ov->frame[f].format != vm->format) ||
4299 (ov->frame[f].sub_flag != ov->sub_flag) ||
4300 (ov->frame[f].depth != depth)) {
4301 PDEBUG(4, "VIDIOCMCAPTURE: change in image parameters");
4302
4303 rc = ov51x_wait_frames_inactive(ov);
4304 if (rc)
4305 return rc;
4306
4307 rc = mode_init_regs(ov, vm->width, vm->height,
4308 vm->format, ov->sub_flag);
4309 #if 0
4310 if (rc < 0) {
4311 PDEBUG(1, "Got error while initializing regs ");
4312 return ret;
4313 }
4314 #endif
4315 ov->frame[f].width = vm->width;
4316 ov->frame[f].height = vm->height;
4317 ov->frame[f].format = vm->format;
4318 ov->frame[f].sub_flag = ov->sub_flag;
4319 ov->frame[f].depth = depth;
4320 }
4321
4322 /* Mark it as ready */
4323 ov->frame[f].grabstate = FRAME_READY;
4324
4325 PDEBUG(4, "VIDIOCMCAPTURE: renewing frame %d", f);
4326
4327 return ov51x_new_frame(ov, f);
4328 }
4329 case VIDIOCSYNC:
4330 {
4331 unsigned int fnum = *((unsigned int *) arg);
4332 struct ov511_frame *frame;
4333 int rc;
4334
4335 if (fnum >= OV511_NUMFRAMES) {
4336 err("VIDIOCSYNC: invalid frame (%d)", fnum);
4337 return -EINVAL;
4338 }
4339
4340 frame = &ov->frame[fnum];
4341
4342 PDEBUG(4, "syncing to frame %d, grabstate = %d", fnum,
4343 frame->grabstate);
4344
4345 switch (frame->grabstate) {
4346 case FRAME_UNUSED:
4347 return -EINVAL;
4348 case FRAME_READY:
4349 case FRAME_GRABBING:
4350 case FRAME_ERROR:
4351 redo:
4352 if (!ov->dev)
4353 return -EIO;
4354
4355 rc = wait_event_interruptible(frame->wq,
4356 (frame->grabstate == FRAME_DONE)
4357 || (frame->grabstate == FRAME_ERROR));
4358
4359 if (rc)
4360 return rc;
4361
4362 if (frame->grabstate == FRAME_ERROR) {
4363 if ((rc = ov51x_new_frame(ov, fnum)) < 0)
4364 return rc;
4365 goto redo;
4366 }
4367 /* Fall through */
4368 case FRAME_DONE:
4369 if (ov->snap_enabled && !frame->snapshot) {
4370 if ((rc = ov51x_new_frame(ov, fnum)) < 0)
4371 return rc;
4372 goto redo;
4373 }
4374
4375 frame->grabstate = FRAME_UNUSED;
4376
4377 /* Reset the hardware snapshot button */
4378 /* FIXME - Is this the best place for this? */
4379 if ((ov->snap_enabled) && (frame->snapshot)) {
4380 frame->snapshot = 0;
4381 ov51x_clear_snapshot(ov);
4382 }
4383
4384 /* Decompression, format conversion, etc... */
4385 ov51x_postprocess(ov, frame);
4386
4387 break;
4388 } /* end switch */
4389
4390 return 0;
4391 }
4392 case VIDIOCGFBUF:
4393 {
4394 struct video_buffer *vb = arg;
4395
4396 PDEBUG(4, "VIDIOCGFBUF");
4397
4398 memset(vb, 0, sizeof(struct video_buffer));
4399
4400 return 0;
4401 }
4402 case VIDIOCGUNIT:
4403 {
4404 struct video_unit *vu = arg;
4405
4406 PDEBUG(4, "VIDIOCGUNIT");
4407
4408 memset(vu, 0, sizeof(struct video_unit));
4409
4410 vu->video = ov->vdev->minor;
4411 vu->vbi = VIDEO_NO_UNIT;
4412 vu->radio = VIDEO_NO_UNIT;
4413 vu->audio = VIDEO_NO_UNIT;
4414 vu->teletext = VIDEO_NO_UNIT;
4415
4416 return 0;
4417 }
4418 case OV511IOC_WI2C:
4419 {
4420 struct ov511_i2c_struct *w = arg;
4421
4422 return i2c_w_slave(ov, w->slave, w->reg, w->value, w->mask);
4423 }
4424 case OV511IOC_RI2C:
4425 {
4426 struct ov511_i2c_struct *r = arg;
4427 int rc;
4428
4429 rc = i2c_r_slave(ov, r->slave, r->reg);
4430 if (rc < 0)
4431 return rc;
4432
4433 r->value = rc;
4434 return 0;
4435 }
4436 default:
4437 PDEBUG(3, "Unsupported IOCtl: 0x%X", cmd);
4438 return -ENOIOCTLCMD;
4439 } /* end switch */
4440
4441 return 0;
4442 }
4443
4444 static int
4445 ov51x_v4l1_ioctl(struct inode *inode, struct file *file,
4446 unsigned int cmd, unsigned long arg)
4447 {
4448 struct video_device *vdev = file->private_data;
4449 struct usb_ov511 *ov = video_get_drvdata(vdev);
4450 int rc;
4451
4452 if (mutex_lock_interruptible(&ov->lock))
4453 return -EINTR;
4454
4455 rc = video_usercopy(inode, file, cmd, arg, ov51x_v4l1_ioctl_internal);
4456
4457 mutex_unlock(&ov->lock);
4458 return rc;
4459 }
4460
4461 static ssize_t
4462 ov51x_v4l1_read(struct file *file, char __user *buf, size_t cnt, loff_t *ppos)
4463 {
4464 struct video_device *vdev = file->private_data;
4465 int noblock = file->f_flags&O_NONBLOCK;
4466 unsigned long count = cnt;
4467 struct usb_ov511 *ov = video_get_drvdata(vdev);
4468 int i, rc = 0, frmx = -1;
4469 struct ov511_frame *frame;
4470
4471 if (mutex_lock_interruptible(&ov->lock))
4472 return -EINTR;
4473
4474 PDEBUG(4, "%ld bytes, noblock=%d", count, noblock);
4475
4476 if (!vdev || !buf) {
4477 rc = -EFAULT;
4478 goto error;
4479 }
4480
4481 if (!ov->dev) {
4482 rc = -EIO;
4483 goto error;
4484 }
4485
4486 // FIXME: Only supports two frames
4487 /* See if a frame is completed, then use it. */
4488 if (ov->frame[0].grabstate >= FRAME_DONE) /* _DONE or _ERROR */
4489 frmx = 0;
4490 else if (ov->frame[1].grabstate >= FRAME_DONE)/* _DONE or _ERROR */
4491 frmx = 1;
4492
4493 /* If nonblocking we return immediately */
4494 if (noblock && (frmx == -1)) {
4495 rc = -EAGAIN;
4496 goto error;
4497 }
4498
4499 /* If no FRAME_DONE, look for a FRAME_GRABBING state. */
4500 /* See if a frame is in process (grabbing), then use it. */
4501 if (frmx == -1) {
4502 if (ov->frame[0].grabstate == FRAME_GRABBING)
4503 frmx = 0;
4504 else if (ov->frame[1].grabstate == FRAME_GRABBING)
4505 frmx = 1;
4506 }
4507
4508 /* If no frame is active, start one. */
4509 if (frmx == -1) {
4510 if ((rc = ov51x_new_frame(ov, frmx = 0))) {
4511 err("read: ov51x_new_frame error");
4512 goto error;
4513 }
4514 }
4515
4516 frame = &ov->frame[frmx];
4517
4518 restart:
4519 if (!ov->dev) {
4520 rc = -EIO;
4521 goto error;
4522 }
4523
4524 /* Wait while we're grabbing the image */
4525 PDEBUG(4, "Waiting image grabbing");
4526 rc = wait_event_interruptible(frame->wq,
4527 (frame->grabstate == FRAME_DONE)
4528 || (frame->grabstate == FRAME_ERROR));
4529
4530 if (rc)
4531 goto error;
4532
4533 PDEBUG(4, "Got image, frame->grabstate = %d", frame->grabstate);
4534 PDEBUG(4, "bytes_recvd = %d", frame->bytes_recvd);
4535
4536 if (frame->grabstate == FRAME_ERROR) {
4537 frame->bytes_read = 0;
4538 err("** ick! ** Errored frame %d", ov->curframe);
4539 if (ov51x_new_frame(ov, frmx)) {
4540 err("read: ov51x_new_frame error");
4541 goto error;
4542 }
4543 goto restart;
4544 }
4545
4546
4547 /* Repeat until we get a snapshot frame */
4548 if (ov->snap_enabled)
4549 PDEBUG(4, "Waiting snapshot frame");
4550 if (ov->snap_enabled && !frame->snapshot) {
4551 frame->bytes_read = 0;
4552 if ((rc = ov51x_new_frame(ov, frmx))) {
4553 err("read: ov51x_new_frame error");
4554 goto error;
4555 }
4556 goto restart;
4557 }
4558
4559 /* Clear the snapshot */
4560 if (ov->snap_enabled && frame->snapshot) {
4561 frame->snapshot = 0;
4562 ov51x_clear_snapshot(ov);
4563 }
4564
4565 /* Decompression, format conversion, etc... */
4566 ov51x_postprocess(ov, frame);
4567
4568 PDEBUG(4, "frmx=%d, bytes_read=%ld, length=%ld", frmx,
4569 frame->bytes_read,
4570 get_frame_length(frame));
4571
4572 /* copy bytes to user space; we allow for partials reads */
4573 // if ((count + frame->bytes_read)
4574 // > get_frame_length((struct ov511_frame *)frame))
4575 // count = frame->scanlength - frame->bytes_read;
4576
4577 /* FIXME - count hardwired to be one frame... */
4578 count = get_frame_length(frame);
4579
4580 PDEBUG(4, "Copy to user space: %ld bytes", count);
4581 if ((i = copy_to_user(buf, frame->data + frame->bytes_read, count))) {
4582 PDEBUG(4, "Copy failed! %d bytes not copied", i);
4583 rc = -EFAULT;
4584 goto error;
4585 }
4586
4587 frame->bytes_read += count;
4588 PDEBUG(4, "{copy} count used=%ld, new bytes_read=%ld",
4589 count, frame->bytes_read);
4590
4591 /* If all data have been read... */
4592 if (frame->bytes_read
4593 >= get_frame_length(frame)) {
4594 frame->bytes_read = 0;
4595
4596 // FIXME: Only supports two frames
4597 /* Mark it as available to be used again. */
4598 ov->frame[frmx].grabstate = FRAME_UNUSED;
4599 if ((rc = ov51x_new_frame(ov, !frmx))) {
4600 err("ov51x_new_frame returned error");
4601 goto error;
4602 }
4603 }
4604
4605 PDEBUG(4, "read finished, returning %ld (sweet)", count);
4606
4607 mutex_unlock(&ov->lock);
4608 return count;
4609
4610 error:
4611 mutex_unlock(&ov->lock);
4612 return rc;
4613 }
4614
4615 static int
4616 ov51x_v4l1_mmap(struct file *file, struct vm_area_struct *vma)
4617 {
4618 struct video_device *vdev = file->private_data;
4619 unsigned long start = vma->vm_start;
4620 unsigned long size = vma->vm_end - vma->vm_start;
4621 struct usb_ov511 *ov = video_get_drvdata(vdev);
4622 unsigned long page, pos;
4623
4624 if (ov->dev == NULL)
4625 return -EIO;
4626
4627 PDEBUG(4, "mmap: %ld (%lX) bytes", size, size);
4628
4629 if (size > (((OV511_NUMFRAMES
4630 * MAX_DATA_SIZE(ov->maxwidth, ov->maxheight)
4631 + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))))
4632 return -EINVAL;
4633
4634 if (mutex_lock_interruptible(&ov->lock))
4635 return -EINTR;
4636
4637 pos = (unsigned long)ov->fbuf;
4638 while (size > 0) {
4639 page = vmalloc_to_pfn((void *)pos);
4640 if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
4641 mutex_unlock(&ov->lock);
4642 return -EAGAIN;
4643 }
4644 start += PAGE_SIZE;
4645 pos += PAGE_SIZE;
4646 if (size > PAGE_SIZE)
4647 size -= PAGE_SIZE;
4648 else
4649 size = 0;
4650 }
4651
4652 mutex_unlock(&ov->lock);
4653 return 0;
4654 }
4655
4656 static struct file_operations ov511_fops = {
4657 .owner = THIS_MODULE,
4658 .open = ov51x_v4l1_open,
4659 .release = ov51x_v4l1_close,
4660 .read = ov51x_v4l1_read,
4661 .mmap = ov51x_v4l1_mmap,
4662 .ioctl = ov51x_v4l1_ioctl,
4663 .compat_ioctl = v4l_compat_ioctl32,
4664 .llseek = no_llseek,
4665 };
4666
4667 static struct video_device vdev_template = {
4668 .owner = THIS_MODULE,
4669 .name = "OV511 USB Camera",
4670 .type = VID_TYPE_CAPTURE,
4671 .hardware = VID_HARDWARE_OV511,
4672 .fops = &ov511_fops,
4673 .release = video_device_release,
4674 .minor = -1,
4675 };
4676
4677 /****************************************************************************
4678 *
4679 * OV511 and sensor configuration
4680 *
4681 ***************************************************************************/
4682
4683 /* This initializes the OV7610, OV7620, or OV76BE sensor. The OV76BE uses
4684 * the same register settings as the OV7610, since they are very similar.
4685 */
4686 static int
4687 ov7xx0_configure(struct usb_ov511 *ov)
4688 {
4689 int i, success;
4690 int rc;
4691
4692 /* Lawrence Glaister <lg@jfm.bc.ca> reports:
4693 *
4694 * Register 0x0f in the 7610 has the following effects:
4695 *
4696 * 0x85 (AEC method 1): Best overall, good contrast range
4697 * 0x45 (AEC method 2): Very overexposed
4698 * 0xa5 (spec sheet default): Ok, but the black level is
4699 * shifted resulting in loss of contrast
4700 * 0x05 (old driver setting): very overexposed, too much
4701 * contrast
4702 */
4703 static struct ov511_regvals aRegvalsNorm7610[] = {
4704 { OV511_I2C_BUS, 0x10, 0xff },
4705 { OV511_I2C_BUS, 0x16, 0x06 },
4706 { OV511_I2C_BUS, 0x28, 0x24 },
4707 { OV511_I2C_BUS, 0x2b, 0xac },
4708 { OV511_I2C_BUS, 0x12, 0x00 },
4709 { OV511_I2C_BUS, 0x38, 0x81 },
4710 { OV511_I2C_BUS, 0x28, 0x24 }, /* 0c */
4711 { OV511_I2C_BUS, 0x0f, 0x85 }, /* lg's setting */
4712 { OV511_I2C_BUS, 0x15, 0x01 },
4713 { OV511_I2C_BUS, 0x20, 0x1c },
4714 { OV511_I2C_BUS, 0x23, 0x2a },
4715 { OV511_I2C_BUS, 0x24, 0x10 },
4716 { OV511_I2C_BUS, 0x25, 0x8a },
4717 { OV511_I2C_BUS, 0x26, 0xa2 },
4718 { OV511_I2C_BUS, 0x27, 0xc2 },
4719 { OV511_I2C_BUS, 0x2a, 0x04 },
4720 { OV511_I2C_BUS, 0x2c, 0xfe },
4721 { OV511_I2C_BUS, 0x2d, 0x93 },
4722 { OV511_I2C_BUS, 0x30, 0x71 },
4723 { OV511_I2C_BUS, 0x31, 0x60 },
4724 { OV511_I2C_BUS, 0x32, 0x26 },
4725 { OV511_I2C_BUS, 0x33, 0x20 },
4726 { OV511_I2C_BUS, 0x34, 0x48 },
4727 { OV511_I2C_BUS, 0x12, 0x24 },
4728 { OV511_I2C_BUS, 0x11, 0x01 },
4729 { OV511_I2C_BUS, 0x0c, 0x24 },
4730 { OV511_I2C_BUS, 0x0d, 0x24 },
4731 { OV511_DONE_BUS, 0x0, 0x00 },
4732 };
4733
4734 static struct ov511_regvals aRegvalsNorm7620[] = {
4735 { OV511_I2C_BUS, 0x00, 0x00 },
4736 { OV511_I2C_BUS, 0x01, 0x80 },
4737 { OV511_I2C_BUS, 0x02, 0x80 },
4738 { OV511_I2C_BUS, 0x03, 0xc0 },
4739 { OV511_I2C_BUS, 0x06, 0x60 },
4740 { OV511_I2C_BUS, 0x07, 0x00 },
4741 { OV511_I2C_BUS, 0x0c, 0x24 },
4742 { OV511_I2C_BUS, 0x0c, 0x24 },
4743 { OV511_I2C_BUS, 0x0d, 0x24 },
4744 { OV511_I2C_BUS, 0x11, 0x01 },
4745 { OV511_I2C_BUS, 0x12, 0x24 },
4746 { OV511_I2C_BUS, 0x13, 0x01 },
4747 { OV511_I2C_BUS, 0x14, 0x84 },
4748 { OV511_I2C_BUS, 0x15, 0x01 },
4749 { OV511_I2C_BUS, 0x16, 0x03 },
4750 { OV511_I2C_BUS, 0x17, 0x2f },
4751 { OV511_I2C_BUS, 0x18, 0xcf },
4752 { OV511_I2C_BUS, 0x19, 0x06 },
4753 { OV511_I2C_BUS, 0x1a, 0xf5 },
4754 { OV511_I2C_BUS, 0x1b, 0x00 },
4755 { OV511_I2C_BUS, 0x20, 0x18 },
4756 { OV511_I2C_BUS, 0x21, 0x80 },
4757 { OV511_I2C_BUS, 0x22, 0x80 },
4758 { OV511_I2C_BUS, 0x23, 0x00 },
4759 { OV511_I2C_BUS, 0x26, 0xa2 },
4760 { OV511_I2C_BUS, 0x27, 0xea },
4761 { OV511_I2C_BUS, 0x28, 0x20 },
4762 { OV511_I2C_BUS, 0x29, 0x00 },
4763 { OV511_I2C_BUS, 0x2a, 0x10 },
4764 { OV511_I2C_BUS, 0x2b, 0x00 },
4765 { OV511_I2C_BUS, 0x2c, 0x88 },
4766 { OV511_I2C_BUS, 0x2d, 0x91 },
4767 { OV511_I2C_BUS, 0x2e, 0x80 },
4768 { OV511_I2C_BUS, 0x2f, 0x44 },
4769 { OV511_I2C_BUS, 0x60, 0x27 },
4770 { OV511_I2C_BUS, 0x61, 0x02 },
4771 { OV511_I2C_BUS, 0x62, 0x5f },
4772 { OV511_I2C_BUS, 0x63, 0xd5 },
4773 { OV511_I2C_BUS, 0x64, 0x57 },
4774 { OV511_I2C_BUS, 0x65, 0x83 },
4775 { OV511_I2C_BUS, 0x66, 0x55 },
4776 { OV511_I2C_BUS, 0x67, 0x92 },
4777 { OV511_I2C_BUS, 0x68, 0xcf },
4778 { OV511_I2C_BUS, 0x69, 0x76 },
4779 { OV511_I2C_BUS, 0x6a, 0x22 },
4780 { OV511_I2C_BUS, 0x6b, 0x00 },
4781 { OV511_I2C_BUS, 0x6c, 0x02 },
4782 { OV511_I2C_BUS, 0x6d, 0x44 },
4783 { OV511_I2C_BUS, 0x6e, 0x80 },
4784 { OV511_I2C_BUS, 0x6f, 0x1d },
4785 { OV511_I2C_BUS, 0x70, 0x8b },
4786 { OV511_I2C_BUS, 0x71, 0x00 },
4787 { OV511_I2C_BUS, 0x72, 0x14 },
4788 { OV511_I2C_BUS, 0x73, 0x54 },
4789 { OV511_I2C_BUS, 0x74, 0x00 },
4790 { OV511_I2C_BUS, 0x75, 0x8e },
4791 { OV511_I2C_BUS, 0x76, 0x00 },
4792 { OV511_I2C_BUS, 0x77, 0xff },
4793 { OV511_I2C_BUS, 0x78, 0x80 },
4794 { OV511_I2C_BUS, 0x79, 0x80 },
4795 { OV511_I2C_BUS, 0x7a, 0x80 },
4796 { OV511_I2C_BUS, 0x7b, 0xe2 },
4797 { OV511_I2C_BUS, 0x7c, 0x00 },
4798 { OV511_DONE_BUS, 0x0, 0x00 },
4799 };
4800
4801 PDEBUG(4, "starting configuration");
4802
4803 /* This looks redundant, but is necessary for WebCam 3 */
4804 ov->primary_i2c_slave = OV7xx0_SID;
4805 if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
4806 return -1;
4807
4808 if (init_ov_sensor(ov) >= 0) {
4809 PDEBUG(1, "OV7xx0 sensor initalized (method 1)");
4810 } else {
4811 /* Reset the 76xx */
4812 if (i2c_w(ov, 0x12, 0x80) < 0)
4813 return -1;
4814
4815 /* Wait for it to initialize */
4816 msleep(150);
4817
4818 i = 0;
4819 success = 0;
4820 while (i <= i2c_detect_tries) {
4821 if ((i2c_r(ov, OV7610_REG_ID_HIGH) == 0x7F) &&
4822 (i2c_r(ov, OV7610_REG_ID_LOW) == 0xA2)) {
4823 success = 1;
4824 break;
4825 } else {
4826 i++;
4827 }
4828 }
4829
4830 // Was (i == i2c_detect_tries) previously. This obviously used to always report
4831 // success. Whether anyone actually depended on that bug is unknown
4832 if ((i >= i2c_detect_tries) && (success == 0)) {
4833 err("Failed to read sensor ID. You might not have an");
4834 err("OV7610/20, or it may be not responding. Report");
4835 err("this to " EMAIL);
4836 err("This is only a warning. You can attempt to use");
4837 err("your camera anyway");
4838 // Only issue a warning for now
4839 // return -1;
4840 } else {
4841 PDEBUG(1, "OV7xx0 initialized (method 2, %dx)", i+1);
4842 }
4843 }
4844
4845 /* Detect sensor (sub)type */
4846 rc = i2c_r(ov, OV7610_REG_COM_I);
4847
4848 if (rc < 0) {
4849 err("Error detecting sensor type");
4850 return -1;
4851 } else if ((rc & 3) == 3) {
4852 info("Sensor is an OV7610");
4853 ov->sensor = SEN_OV7610;
4854 } else if ((rc & 3) == 1) {
4855 /* I don't know what's different about the 76BE yet. */
4856 if (i2c_r(ov, 0x15) & 1)
4857 info("Sensor is an OV7620AE");
4858 else
4859 info("Sensor is an OV76BE");
4860
4861 /* OV511+ will return all zero isoc data unless we
4862 * configure the sensor as a 7620. Someone needs to
4863 * find the exact reg. setting that causes this. */
4864 if (ov->bridge == BRG_OV511PLUS) {
4865 info("Enabling 511+/7620AE workaround");
4866 ov->sensor = SEN_OV7620;
4867 } else {
4868 ov->sensor = SEN_OV76BE;
4869 }
4870 } else if ((rc & 3) == 0) {
4871 info("Sensor is an OV7620");
4872 ov->sensor = SEN_OV7620;
4873 } else {
4874 err("Unknown image sensor version: %d", rc & 3);
4875 return -1;
4876 }
4877
4878 if (ov->sensor == SEN_OV7620) {
4879 PDEBUG(4, "Writing 7620 registers");
4880 if (write_regvals(ov, aRegvalsNorm7620))
4881 return -1;
4882 } else {
4883 PDEBUG(4, "Writing 7610 registers");
4884 if (write_regvals(ov, aRegvalsNorm7610))
4885 return -1;
4886 }
4887
4888 /* Set sensor-specific vars */
4889 ov->maxwidth = 640;
4890 ov->maxheight = 480;
4891 ov->minwidth = 64;
4892 ov->minheight = 48;
4893
4894 // FIXME: These do not match the actual settings yet
4895 ov->brightness = 0x80 << 8;
4896 ov->contrast = 0x80 << 8;
4897 ov->colour = 0x80 << 8;
4898 ov->hue = 0x80 << 8;
4899
4900 return 0;
4901 }
4902
4903 /* This initializes the OV6620, OV6630, OV6630AE, or OV6630AF sensor. */
4904 static int
4905 ov6xx0_configure(struct usb_ov511 *ov)
4906 {
4907 int rc;
4908
4909 static struct ov511_regvals aRegvalsNorm6x20[] = {
4910 { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */
4911 { OV511_I2C_BUS, 0x11, 0x01 },
4912 { OV511_I2C_BUS, 0x03, 0x60 },
4913 { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */
4914 { OV511_I2C_BUS, 0x07, 0xa8 },
4915 /* The ratio of 0x0c and 0x0d controls the white point */
4916 { OV511_I2C_BUS, 0x0c, 0x24 },
4917 { OV511_I2C_BUS, 0x0d, 0x24 },
4918 { OV511_I2C_BUS, 0x0f, 0x15 }, /* COMS */
4919 { OV511_I2C_BUS, 0x10, 0x75 }, /* AEC Exposure time */
4920 { OV511_I2C_BUS, 0x12, 0x24 }, /* Enable AGC */
4921 { OV511_I2C_BUS, 0x14, 0x04 },
4922 /* 0x16: 0x06 helps frame stability with moving objects */
4923 { OV511_I2C_BUS, 0x16, 0x06 },
4924 // { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */
4925 { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */
4926 /* 0x28: 0x05 Selects RGB format if RGB on */
4927 { OV511_I2C_BUS, 0x28, 0x05 },
4928 { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */
4929 // { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */
4930 { OV511_I2C_BUS, 0x2d, 0x99 },
4931 { OV511_I2C_BUS, 0x33, 0xa0 }, /* Color Processing Parameter */
4932 { OV511_I2C_BUS, 0x34, 0xd2 }, /* Max A/D range */
4933 { OV511_I2C_BUS, 0x38, 0x8b },
4934 { OV511_I2C_BUS, 0x39, 0x40 },
4935
4936 { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */
4937 { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */
4938 { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */
4939
4940 { OV511_I2C_BUS, 0x3d, 0x80 },
4941 /* These next two registers (0x4a, 0x4b) are undocumented. They
4942 * control the color balance */
4943 { OV511_I2C_BUS, 0x4a, 0x80 },
4944 { OV511_I2C_BUS, 0x4b, 0x80 },
4945 { OV511_I2C_BUS, 0x4d, 0xd2 }, /* This reduces noise a bit */
4946 { OV511_I2C_BUS, 0x4e, 0xc1 },
4947 { OV511_I2C_BUS, 0x4f, 0x04 },
4948 // Do 50-53 have any effect?
4949 // Toggle 0x12[2] off and on here?
4950 { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */
4951 };
4952
4953 static struct ov511_regvals aRegvalsNorm6x30[] = {
4954 /*OK*/ { OV511_I2C_BUS, 0x12, 0x80 }, /* reset */
4955 { OV511_I2C_BUS, 0x11, 0x00 },
4956 /*OK*/ { OV511_I2C_BUS, 0x03, 0x60 },
4957 /*0A?*/ { OV511_I2C_BUS, 0x05, 0x7f }, /* For when autoadjust is off */
4958 { OV511_I2C_BUS, 0x07, 0xa8 },
4959 /* The ratio of 0x0c and 0x0d controls the white point */
4960 /*OK*/ { OV511_I2C_BUS, 0x0c, 0x24 },
4961 /*OK*/ { OV511_I2C_BUS, 0x0d, 0x24 },
4962 /*A*/ { OV511_I2C_BUS, 0x0e, 0x20 },
4963 // /*04?*/ { OV511_I2C_BUS, 0x14, 0x80 },
4964 { OV511_I2C_BUS, 0x16, 0x03 },
4965 // /*OK*/ { OV511_I2C_BUS, 0x20, 0x30 }, /* Aperture correction enable */
4966 // 21 & 22? The suggested values look wrong. Go with default
4967 /*A*/ { OV511_I2C_BUS, 0x23, 0xc0 },
4968 /*A*/ { OV511_I2C_BUS, 0x25, 0x9a }, // Check this against default
4969 // /*OK*/ { OV511_I2C_BUS, 0x26, 0xb2 }, /* BLC enable */
4970
4971 /* 0x28: 0x05 Selects RGB format if RGB on */
4972 // /*04?*/ { OV511_I2C_BUS, 0x28, 0x05 },
4973 // /*04?*/ { OV511_I2C_BUS, 0x28, 0x45 }, // DEBUG: Tristate UV bus
4974
4975 /*OK*/ { OV511_I2C_BUS, 0x2a, 0x04 }, /* Disable framerate adjust */
4976 // /*OK*/ { OV511_I2C_BUS, 0x2b, 0xac }, /* Framerate; Set 2a[7] first */
4977 { OV511_I2C_BUS, 0x2d, 0x99 },
4978 // /*A*/ { OV511_I2C_BUS, 0x33, 0x26 }, // Reserved bits on 6620
4979 // /*d2?*/ { OV511_I2C_BUS, 0x34, 0x03 }, /* Max A/D range */
4980 // /*8b?*/ { OV511_I2C_BUS, 0x38, 0x83 },
4981 // /*40?*/ { OV511_I2C_BUS, 0x39, 0xc0 }, // 6630 adds bit 7
4982 // { OV511_I2C_BUS, 0x3c, 0x39 }, /* Enable AEC mode changing */
4983 // { OV511_I2C_BUS, 0x3c, 0x3c }, /* Change AEC mode */
4984 // { OV511_I2C_BUS, 0x3c, 0x24 }, /* Disable AEC mode changing */
4985 { OV511_I2C_BUS, 0x3d, 0x80 },
4986 // /*A*/ { OV511_I2C_BUS, 0x3f, 0x0e },
4987
4988 /* These next two registers (0x4a, 0x4b) are undocumented. They
4989 * control the color balance */
4990 // /*OK?*/ { OV511_I2C_BUS, 0x4a, 0x80 }, // Check these
4991 // /*OK?*/ { OV511_I2C_BUS, 0x4b, 0x80 },
4992 { OV511_I2C_BUS, 0x4d, 0x10 }, /* U = 0.563u, V = 0.714v */
4993 /*c1?*/ { OV511_I2C_BUS, 0x4e, 0x40 },
4994
4995 /* UV average mode, color killer: strongest */
4996 { OV511_I2C_BUS, 0x4f, 0x07 },
4997
4998 { OV511_I2C_BUS, 0x54, 0x23 }, /* Max AGC gain: 18dB */
4999 { OV511_I2C_BUS, 0x57, 0x81 }, /* (default) */
5000 { OV511_I2C_BUS, 0x59, 0x01 }, /* AGC dark current comp: +1 */
5001 { OV511_I2C_BUS, 0x5a, 0x2c }, /* (undocumented) */
5002 { OV511_I2C_BUS, 0x5b, 0x0f }, /* AWB chrominance levels */
5003 // { OV511_I2C_BUS, 0x5c, 0x10 },
5004 { OV511_DONE_BUS, 0x0, 0x00 }, /* END MARKER */
5005 };
5006
5007 PDEBUG(4, "starting sensor configuration");
5008
5009 if (init_ov_sensor(ov) < 0) {
5010 err("Failed to read sensor ID. You might not have an OV6xx0,");
5011 err("or it may be not responding. Report this to " EMAIL);
5012 return -1;
5013 } else {
5014 PDEBUG(1, "OV6xx0 sensor detected");
5015 }
5016
5017 /* Detect sensor (sub)type */
5018 rc = i2c_r(ov, OV7610_REG_COM_I);
5019
5020 if (rc < 0) {
5021 err("Error detecting sensor type");
5022 return -1;
5023 }
5024
5025 if ((rc & 3) == 0) {
5026 ov->sensor = SEN_OV6630;
5027 info("Sensor is an OV6630");
5028 } else if ((rc & 3) == 1) {
5029 ov->sensor = SEN_OV6620;
5030 info("Sensor is an OV6620");
5031 } else if ((rc & 3) == 2) {
5032 ov->sensor = SEN_OV6630;
5033 info("Sensor is an OV6630AE");
5034 } else if ((rc & 3) == 3) {
5035 ov->sensor = SEN_OV6630;
5036 info("Sensor is an OV6630AF");
5037 }
5038
5039 /* Set sensor-specific vars */
5040 ov->maxwidth = 352;
5041 ov->maxheight = 288;
5042 ov->minwidth = 64;
5043 ov->minheight = 48;
5044
5045 // FIXME: These do not match the actual settings yet
5046 ov->brightness = 0x80 << 8;
5047 ov->contrast = 0x80 << 8;
5048 ov->colour = 0x80 << 8;
5049 ov->hue = 0x80 << 8;
5050
5051 if (ov->sensor == SEN_OV6620) {
5052 PDEBUG(4, "Writing 6x20 registers");
5053 if (write_regvals(ov, aRegvalsNorm6x20))
5054 return -1;
5055 } else {
5056 PDEBUG(4, "Writing 6x30 registers");
5057 if (write_regvals(ov, aRegvalsNorm6x30))
5058 return -1;
5059 }
5060
5061 return 0;
5062 }
5063
5064 /* This initializes the KS0127 and KS0127B video decoders. */
5065 static int
5066 ks0127_configure(struct usb_ov511 *ov)
5067 {
5068 int rc;
5069
5070 // FIXME: I don't know how to sync or reset it yet
5071 #if 0
5072 if (ov51x_init_ks_sensor(ov) < 0) {
5073 err("Failed to initialize the KS0127");
5074 return -1;
5075 } else {
5076 PDEBUG(1, "KS012x(B) sensor detected");
5077 }
5078 #endif
5079
5080 /* Detect decoder subtype */
5081 rc = i2c_r(ov, 0x00);
5082 if (rc < 0) {
5083 err("Error detecting sensor type");
5084 return -1;
5085 } else if (rc & 0x08) {
5086 rc = i2c_r(ov, 0x3d);
5087 if (rc < 0) {
5088 err("Error detecting sensor type");
5089 return -1;
5090 } else if ((rc & 0x0f) == 0) {
5091 info("Sensor is a KS0127");
5092 ov->sensor = SEN_KS0127;
5093 } else if ((rc & 0x0f) == 9) {
5094 info("Sensor is a KS0127B Rev. A");
5095 ov->sensor = SEN_KS0127B;
5096 }
5097 } else {
5098 err("Error: Sensor is an unsupported KS0122");
5099 return -1;
5100 }
5101
5102 /* Set sensor-specific vars */
5103 ov->maxwidth = 640;
5104 ov->maxheight = 480;
5105 ov->minwidth = 64;
5106 ov->minheight = 48;
5107
5108 // FIXME: These do not match the actual settings yet
5109 ov->brightness = 0x80 << 8;
5110 ov->contrast = 0x80 << 8;
5111 ov->colour = 0x80 << 8;
5112 ov->hue = 0x80 << 8;
5113
5114 /* This device is not supported yet. Bail out now... */
5115 err("This sensor is not supported yet.");
5116 return -1;
5117
5118 return 0;
5119 }
5120
5121 /* This initializes the SAA7111A video decoder. */
5122 static int
5123 saa7111a_configure(struct usb_ov511 *ov)
5124 {
5125 int rc;
5126
5127 /* Since there is no register reset command, all registers must be
5128 * written, otherwise gives erratic results */
5129 static struct ov511_regvals aRegvalsNormSAA7111A[] = {
5130 { OV511_I2C_BUS, 0x06, 0xce },
5131 { OV511_I2C_BUS, 0x07, 0x00 },
5132 { OV511_I2C_BUS, 0x10, 0x44 }, /* YUV422, 240/286 lines */
5133 { OV511_I2C_BUS, 0x0e, 0x01 }, /* NTSC M or PAL BGHI */
5134 { OV511_I2C_BUS, 0x00, 0x00 },
5135 { OV511_I2C_BUS, 0x01, 0x00 },
5136 { OV511_I2C_BUS, 0x03, 0x23 },
5137 { OV511_I2C_BUS, 0x04, 0x00 },
5138 { OV511_I2C_BUS, 0x05, 0x00 },
5139 { OV511_I2C_BUS, 0x08, 0xc8 }, /* Auto field freq */
5140 { OV511_I2C_BUS, 0x09, 0x01 }, /* Chrom. trap off, APER=0.25 */
5141 { OV511_I2C_BUS, 0x0a, 0x80 }, /* BRIG=128 */
5142 { OV511_I2C_BUS, 0x0b, 0x40 }, /* CONT=1.0 */
5143 { OV511_I2C_BUS, 0x0c, 0x40 }, /* SATN=1.0 */
5144 { OV511_I2C_BUS, 0x0d, 0x00 }, /* HUE=0 */
5145 { OV511_I2C_BUS, 0x0f, 0x00 },
5146 { OV511_I2C_BUS, 0x11, 0x0c },
5147 { OV511_I2C_BUS, 0x12, 0x00 },
5148 { OV511_I2C_BUS, 0x13, 0x00 },
5149 { OV511_I2C_BUS, 0x14, 0x00 },
5150 { OV511_I2C_BUS, 0x15, 0x00 },
5151 { OV511_I2C_BUS, 0x16, 0x00 },
5152 { OV511_I2C_BUS, 0x17, 0x00 },
5153 { OV511_I2C_BUS, 0x02, 0xc0 }, /* Composite input 0 */
5154 { OV511_DONE_BUS, 0x0, 0x00 },
5155 };
5156
5157 // FIXME: I don't know how to sync or reset it yet
5158 #if 0
5159 if (ov51x_init_saa_sensor(ov) < 0) {
5160 err("Failed to initialize the SAA7111A");
5161 return -1;
5162 } else {
5163 PDEBUG(1, "SAA7111A sensor detected");
5164 }
5165 #endif
5166
5167 /* 640x480 not supported with PAL */
5168 if (ov->pal) {
5169 ov->maxwidth = 320;
5170 ov->maxheight = 240; /* Even field only */
5171 } else {
5172 ov->maxwidth = 640;
5173 ov->maxheight = 480; /* Even/Odd fields */
5174 }
5175
5176 ov->minwidth = 320;
5177 ov->minheight = 240; /* Even field only */
5178
5179 ov->has_decoder = 1;
5180 ov->num_inputs = 8;
5181 ov->norm = VIDEO_MODE_AUTO;
5182 ov->stop_during_set = 0; /* Decoder guarantees stable image */
5183
5184 /* Decoder doesn't change these values, so we use these instead of
5185 * acutally reading the registers (which doesn't work) */
5186 ov->brightness = 0x80 << 8;
5187 ov->contrast = 0x40 << 9;
5188 ov->colour = 0x40 << 9;
5189 ov->hue = 32768;
5190
5191 PDEBUG(4, "Writing SAA7111A registers");
5192 if (write_regvals(ov, aRegvalsNormSAA7111A))
5193 return -1;
5194
5195 /* Detect version of decoder. This must be done after writing the
5196 * initial regs or the decoder will lock up. */
5197 rc = i2c_r(ov, 0x00);
5198
5199 if (rc < 0) {
5200 err("Error detecting sensor version");
5201 return -1;
5202 } else {
5203 info("Sensor is an SAA7111A (version 0x%x)", rc);
5204 ov->sensor = SEN_SAA7111A;
5205 }
5206
5207 // FIXME: Fix this for OV518(+)
5208 /* Latch to negative edge of clock. Otherwise, we get incorrect
5209 * colors and jitter in the digital signal. */
5210 if (ov->bclass == BCL_OV511)
5211 reg_w(ov, 0x11, 0x00);
5212 else
5213 warn("SAA7111A not yet supported with OV518/OV518+");
5214
5215 return 0;
5216 }
5217
5218 /* This initializes the OV511/OV511+ and the sensor */
5219 static int
5220 ov511_configure(struct usb_ov511 *ov)
5221 {
5222 static struct ov511_regvals aRegvalsInit511[] = {
5223 { OV511_REG_BUS, R51x_SYS_RESET, 0x7f },
5224 { OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
5225 { OV511_REG_BUS, R51x_SYS_RESET, 0x7f },
5226 { OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
5227 { OV511_REG_BUS, R51x_SYS_RESET, 0x3f },
5228 { OV511_REG_BUS, R51x_SYS_INIT, 0x01 },
5229 { OV511_REG_BUS, R51x_SYS_RESET, 0x3d },
5230 { OV511_DONE_BUS, 0x0, 0x00},
5231 };
5232
5233 static struct ov511_regvals aRegvalsNorm511[] = {
5234 { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0x01 },
5235 { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
5236 { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 },
5237 { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
5238 { OV511_REG_BUS, R511_FIFO_OPTS, 0x1f },
5239 { OV511_REG_BUS, R511_COMP_EN, 0x00 },
5240 { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 },
5241 { OV511_DONE_BUS, 0x0, 0x00 },
5242 };
5243
5244 static struct ov511_regvals aRegvalsNorm511Plus[] = {
5245 { OV511_REG_BUS, R511_DRAM_FLOW_CTL, 0xff },
5246 { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
5247 { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 },
5248 { OV511_REG_BUS, R51x_SYS_SNAP, 0x00 },
5249 { OV511_REG_BUS, R511_FIFO_OPTS, 0xff },
5250 { OV511_REG_BUS, R511_COMP_EN, 0x00 },
5251 { OV511_REG_BUS, R511_COMP_LUT_EN, 0x03 },
5252 { OV511_DONE_BUS, 0x0, 0x00 },
5253 };
5254
5255 PDEBUG(4, "");
5256
5257 ov->customid = reg_r(ov, R511_SYS_CUST_ID);
5258 if (ov->customid < 0) {
5259 err("Unable to read camera bridge registers");
5260 goto error;
5261 }
5262
5263 PDEBUG (1, "CustomID = %d", ov->customid);
5264 ov->desc = symbolic(camlist, ov->customid);
5265 info("model: %s", ov->desc);
5266
5267 if (0 == strcmp(ov->desc, NOT_DEFINED_STR)) {
5268 err("Camera type (%d) not recognized", ov->customid);
5269 err("Please notify " EMAIL " of the name,");
5270 err("manufacturer, model, and this number of your camera.");
5271 err("Also include the output of the detection process.");
5272 }
5273
5274 if (ov->customid == 70) /* USB Life TV (PAL/SECAM) */
5275 ov->pal = 1;
5276
5277 if (write_regvals(ov, aRegvalsInit511))
5278 goto error;
5279
5280 if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO)
5281 ov51x_led_control(ov, 0);
5282
5283 /* The OV511+ has undocumented bits in the flow control register.
5284 * Setting it to 0xff fixes the corruption with moving objects. */
5285 if (ov->bridge == BRG_OV511) {
5286 if (write_regvals(ov, aRegvalsNorm511))
5287 goto error;
5288 } else if (ov->bridge == BRG_OV511PLUS) {
5289 if (write_regvals(ov, aRegvalsNorm511Plus))
5290 goto error;
5291 } else {
5292 err("Invalid bridge");
5293 }
5294
5295 if (ov511_init_compression(ov))
5296 goto error;
5297
5298 ov->packet_numbering = 1;
5299 ov511_set_packet_size(ov, 0);
5300
5301 ov->snap_enabled = snapshot;
5302
5303 /* Test for 7xx0 */
5304 PDEBUG(3, "Testing for 0V7xx0");
5305 ov->primary_i2c_slave = OV7xx0_SID;
5306 if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
5307 goto error;
5308
5309 if (i2c_w(ov, 0x12, 0x80) < 0) {
5310 /* Test for 6xx0 */
5311 PDEBUG(3, "Testing for 0V6xx0");
5312 ov->primary_i2c_slave = OV6xx0_SID;
5313 if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0)
5314 goto error;
5315
5316 if (i2c_w(ov, 0x12, 0x80) < 0) {
5317 /* Test for 8xx0 */
5318 PDEBUG(3, "Testing for 0V8xx0");
5319 ov->primary_i2c_slave = OV8xx0_SID;
5320 if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0)
5321 goto error;
5322
5323 if (i2c_w(ov, 0x12, 0x80) < 0) {
5324 /* Test for SAA7111A */
5325 PDEBUG(3, "Testing for SAA7111A");
5326 ov->primary_i2c_slave = SAA7111A_SID;
5327 if (ov51x_set_slave_ids(ov, SAA7111A_SID) < 0)
5328 goto error;
5329
5330 if (i2c_w(ov, 0x0d, 0x00) < 0) {
5331 /* Test for KS0127 */
5332 PDEBUG(3, "Testing for KS0127");
5333 ov->primary_i2c_slave = KS0127_SID;
5334 if (ov51x_set_slave_ids(ov, KS0127_SID) < 0)
5335 goto error;
5336
5337 if (i2c_w(ov, 0x10, 0x00) < 0) {
5338 err("Can't determine sensor slave IDs");
5339 goto error;
5340 } else {
5341 if (ks0127_configure(ov) < 0) {
5342 err("Failed to configure KS0127");
5343 goto error;
5344 }
5345 }
5346 } else {
5347 if (saa7111a_configure(ov) < 0) {
5348 err("Failed to configure SAA7111A");
5349 goto error;
5350 }
5351 }
5352 } else {
5353 err("Detected unsupported OV8xx0 sensor");
5354 goto error;
5355 }
5356 } else {
5357 if (ov6xx0_configure(ov) < 0) {
5358 err("Failed to configure OV6xx0");
5359 goto error;
5360 }
5361 }
5362 } else {
5363 if (ov7xx0_configure(ov) < 0) {
5364 err("Failed to configure OV7xx0");
5365 goto error;
5366 }
5367 }
5368
5369 return 0;
5370
5371 error:
5372 err("OV511 Config failed");
5373
5374 return -EBUSY;
5375 }
5376
5377 /* This initializes the OV518/OV518+ and the sensor */
5378 static int
5379 ov518_configure(struct usb_ov511 *ov)
5380 {
5381 /* For 518 and 518+ */
5382 static struct ov511_regvals aRegvalsInit518[] = {
5383 { OV511_REG_BUS, R51x_SYS_RESET, 0x40 },
5384 { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
5385 { OV511_REG_BUS, R51x_SYS_RESET, 0x3e },
5386 { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
5387 { OV511_REG_BUS, R51x_SYS_RESET, 0x00 },
5388 { OV511_REG_BUS, R51x_SYS_INIT, 0xe1 },
5389 { OV511_REG_BUS, 0x46, 0x00 },
5390 { OV511_REG_BUS, 0x5d, 0x03 },
5391 { OV511_DONE_BUS, 0x0, 0x00},
5392 };
5393
5394 static struct ov511_regvals aRegvalsNorm518[] = {
5395 { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */
5396 { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */
5397 { OV511_REG_BUS, 0x31, 0x0f },
5398 { OV511_REG_BUS, 0x5d, 0x03 },
5399 { OV511_REG_BUS, 0x24, 0x9f },
5400 { OV511_REG_BUS, 0x25, 0x90 },
5401 { OV511_REG_BUS, 0x20, 0x00 },
5402 { OV511_REG_BUS, 0x51, 0x04 },
5403 { OV511_REG_BUS, 0x71, 0x19 },
5404 { OV511_DONE_BUS, 0x0, 0x00 },
5405 };
5406
5407 static struct ov511_regvals aRegvalsNorm518Plus[] = {
5408 { OV511_REG_BUS, R51x_SYS_SNAP, 0x02 }, /* Reset */
5409 { OV511_REG_BUS, R51x_SYS_SNAP, 0x01 }, /* Enable */
5410 { OV511_REG_BUS, 0x31, 0x0f },
5411 { OV511_REG_BUS, 0x5d, 0x03 },
5412 { OV511_REG_BUS, 0x24, 0x9f },
5413 { OV511_REG_BUS, 0x25, 0x90 },
5414 { OV511_REG_BUS, 0x20, 0x60 },
5415 { OV511_REG_BUS, 0x51, 0x02 },
5416 { OV511_REG_BUS, 0x71, 0x19 },
5417 { OV511_REG_BUS, 0x40, 0xff },
5418 { OV511_REG_BUS, 0x41, 0x42 },
5419 { OV511_REG_BUS, 0x46, 0x00 },
5420 { OV511_REG_BUS, 0x33, 0x04 },
5421 { OV511_REG_BUS, 0x21, 0x19 },
5422 { OV511_REG_BUS, 0x3f, 0x10 },
5423 { OV511_DONE_BUS, 0x0, 0x00 },
5424 };
5425
5426 PDEBUG(4, "");
5427
5428 /* First 5 bits of custom ID reg are a revision ID on OV518 */
5429 info("Device revision %d", 0x1F & reg_r(ov, R511_SYS_CUST_ID));
5430
5431 /* Give it the default description */
5432 ov->desc = symbolic(camlist, 0);
5433
5434 if (write_regvals(ov, aRegvalsInit518))
5435 goto error;
5436
5437 /* Set LED GPIO pin to output mode */
5438 if (reg_w_mask(ov, 0x57, 0x00, 0x02) < 0)
5439 goto error;
5440
5441 /* LED is off by default with OV518; have to explicitly turn it on */
5442 if (ov->led_policy == LED_OFF || ov->led_policy == LED_AUTO)
5443 ov51x_led_control(ov, 0);
5444 else
5445 ov51x_led_control(ov, 1);
5446
5447 /* Don't require compression if dumppix is enabled; otherwise it's
5448 * required. OV518 has no uncompressed mode, to save RAM. */
5449 if (!dumppix && !ov->compress) {
5450 ov->compress = 1;
5451 warn("Compression required with OV518...enabling");
5452 }
5453
5454 if (ov->bridge == BRG_OV518) {
5455 if (write_regvals(ov, aRegvalsNorm518))
5456 goto error;
5457 } else if (ov->bridge == BRG_OV518PLUS) {
5458 if (write_regvals(ov, aRegvalsNorm518Plus))
5459 goto error;
5460 } else {
5461 err("Invalid bridge");
5462 }
5463
5464 if (reg_w(ov, 0x2f, 0x80) < 0)
5465 goto error;
5466
5467 if (ov518_init_compression(ov))
5468 goto error;
5469
5470 if (ov->bridge == BRG_OV518)
5471 {
5472 struct usb_interface *ifp;
5473 struct usb_host_interface *alt;
5474 __u16 mxps = 0;
5475
5476 ifp = usb_ifnum_to_if(ov->dev, 0);
5477 if (ifp) {
5478 alt = usb_altnum_to_altsetting(ifp, 7);
5479 if (alt)
5480 mxps = le16_to_cpu(alt->endpoint[0].desc.wMaxPacketSize);
5481 }
5482
5483 /* Some OV518s have packet numbering by default, some don't */
5484 if (mxps == 897)
5485 ov->packet_numbering = 1;
5486 else
5487 ov->packet_numbering = 0;
5488 } else {
5489 /* OV518+ has packet numbering turned on by default */
5490 ov->packet_numbering = 1;
5491 }
5492
5493 ov518_set_packet_size(ov, 0);
5494
5495 ov->snap_enabled = snapshot;
5496
5497 /* Test for 76xx */
5498 ov->primary_i2c_slave = OV7xx0_SID;
5499 if (ov51x_set_slave_ids(ov, OV7xx0_SID) < 0)
5500 goto error;
5501
5502 /* The OV518 must be more aggressive about sensor detection since
5503 * I2C write will never fail if the sensor is not present. We have
5504 * to try to initialize the sensor to detect its presence */
5505
5506 if (init_ov_sensor(ov) < 0) {
5507 /* Test for 6xx0 */
5508 ov->primary_i2c_slave = OV6xx0_SID;
5509 if (ov51x_set_slave_ids(ov, OV6xx0_SID) < 0)
5510 goto error;
5511
5512 if (init_ov_sensor(ov) < 0) {
5513 /* Test for 8xx0 */
5514 ov->primary_i2c_slave = OV8xx0_SID;
5515 if (ov51x_set_slave_ids(ov, OV8xx0_SID) < 0)
5516 goto error;
5517
5518 if (init_ov_sensor(ov) < 0) {
5519 err("Can't determine sensor slave IDs");
5520 goto error;
5521 } else {
5522 err("Detected unsupported OV8xx0 sensor");
5523 goto error;
5524 }
5525 } else {
5526 if (ov6xx0_configure(ov) < 0) {
5527 err("Failed to configure OV6xx0");
5528 goto error;
5529 }
5530 }
5531 } else {
5532 if (ov7xx0_configure(ov) < 0) {
5533 err("Failed to configure OV7xx0");
5534 goto error;
5535 }
5536 }
5537
5538 ov->maxwidth = 352;
5539 ov->maxheight = 288;
5540
5541 // The OV518 cannot go as low as the sensor can
5542 ov->minwidth = 160;
5543 ov->minheight = 120;
5544
5545 return 0;
5546
5547 error:
5548 err("OV518 Config failed");
5549
5550 return -EBUSY;
5551 }
5552
5553 /****************************************************************************
5554 * sysfs
5555 ***************************************************************************/
5556
5557 static inline struct usb_ov511 *cd_to_ov(struct class_device *cd)
5558 {
5559 struct video_device *vdev = to_video_device(cd);
5560 return video_get_drvdata(vdev);
5561 }
5562
5563 static ssize_t show_custom_id(struct class_device *cd, char *buf)
5564 {
5565 struct usb_ov511 *ov = cd_to_ov(cd);
5566 return sprintf(buf, "%d\n", ov->customid);
5567 }
5568 static CLASS_DEVICE_ATTR(custom_id, S_IRUGO, show_custom_id, NULL);
5569
5570 static ssize_t show_model(struct class_device *cd, char *buf)
5571 {
5572 struct usb_ov511 *ov = cd_to_ov(cd);
5573 return sprintf(buf, "%s\n", ov->desc);
5574 }
5575 static CLASS_DEVICE_ATTR(model, S_IRUGO, show_model, NULL);
5576
5577 static ssize_t show_bridge(struct class_device *cd, char *buf)
5578 {
5579 struct usb_ov511 *ov = cd_to_ov(cd);
5580 return sprintf(buf, "%s\n", symbolic(brglist, ov->bridge));
5581 }
5582 static CLASS_DEVICE_ATTR(bridge, S_IRUGO, show_bridge, NULL);
5583
5584 static ssize_t show_sensor(struct class_device *cd, char *buf)
5585 {
5586 struct usb_ov511 *ov = cd_to_ov(cd);
5587 return sprintf(buf, "%s\n", symbolic(senlist, ov->sensor));
5588 }
5589 static CLASS_DEVICE_ATTR(sensor, S_IRUGO, show_sensor, NULL);
5590
5591 static ssize_t show_brightness(struct class_device *cd, char *buf)
5592 {
5593 struct usb_ov511 *ov = cd_to_ov(cd);
5594 unsigned short x;
5595
5596 if (!ov->dev)
5597 return -ENODEV;
5598 sensor_get_brightness(ov, &x);
5599 return sprintf(buf, "%d\n", x >> 8);
5600 }
5601 static CLASS_DEVICE_ATTR(brightness, S_IRUGO, show_brightness, NULL);
5602
5603 static ssize_t show_saturation(struct class_device *cd, char *buf)
5604 {
5605 struct usb_ov511 *ov = cd_to_ov(cd);
5606 unsigned short x;
5607
5608 if (!ov->dev)
5609 return -ENODEV;
5610 sensor_get_saturation(ov, &x);
5611 return sprintf(buf, "%d\n", x >> 8);
5612 }
5613 static CLASS_DEVICE_ATTR(saturation, S_IRUGO, show_saturation, NULL);
5614
5615 static ssize_t show_contrast(struct class_device *cd, char *buf)
5616 {
5617 struct usb_ov511 *ov = cd_to_ov(cd);
5618 unsigned short x;
5619
5620 if (!ov->dev)
5621 return -ENODEV;
5622 sensor_get_contrast(ov, &x);
5623 return sprintf(buf, "%d\n", x >> 8);
5624 }
5625 static CLASS_DEVICE_ATTR(contrast, S_IRUGO, show_contrast, NULL);
5626
5627 static ssize_t show_hue(struct class_device *cd, char *buf)
5628 {
5629 struct usb_ov511 *ov = cd_to_ov(cd);
5630 unsigned short x;
5631
5632 if (!ov->dev)
5633 return -ENODEV;
5634 sensor_get_hue(ov, &x);
5635 return sprintf(buf, "%d\n", x >> 8);
5636 }
5637 static CLASS_DEVICE_ATTR(hue, S_IRUGO, show_hue, NULL);
5638
5639 static ssize_t show_exposure(struct class_device *cd, char *buf)
5640 {
5641 struct usb_ov511 *ov = cd_to_ov(cd);
5642 unsigned char exp;
5643
5644 if (!ov->dev)
5645 return -ENODEV;
5646 sensor_get_exposure(ov, &exp);
5647 return sprintf(buf, "%d\n", exp >> 8);
5648 }
5649 static CLASS_DEVICE_ATTR(exposure, S_IRUGO, show_exposure, NULL);
5650
5651 static void ov_create_sysfs(struct video_device *vdev)
5652 {
5653 video_device_create_file(vdev, &class_device_attr_custom_id);
5654 video_device_create_file(vdev, &class_device_attr_model);
5655 video_device_create_file(vdev, &class_device_attr_bridge);
5656 video_device_create_file(vdev, &class_device_attr_sensor);
5657 video_device_create_file(vdev, &class_device_attr_brightness);
5658 video_device_create_file(vdev, &class_device_attr_saturation);
5659 video_device_create_file(vdev, &class_device_attr_contrast);
5660 video_device_create_file(vdev, &class_device_attr_hue);
5661 video_device_create_file(vdev, &class_device_attr_exposure);
5662 }
5663
5664 /****************************************************************************
5665 * USB routines
5666 ***************************************************************************/
5667
5668 static int
5669 ov51x_probe(struct usb_interface *intf, const struct usb_device_id *id)
5670 {
5671 struct usb_device *dev = interface_to_usbdev(intf);
5672 struct usb_interface_descriptor *idesc;
5673 struct usb_ov511 *ov;
5674 int i;
5675
5676 PDEBUG(1, "probing for device...");
5677
5678 /* We don't handle multi-config cameras */
5679 if (dev->descriptor.bNumConfigurations != 1)
5680 return -ENODEV;
5681
5682 idesc = &intf->cur_altsetting->desc;
5683
5684 if (idesc->bInterfaceClass != 0xFF)
5685 return -ENODEV;
5686 if (idesc->bInterfaceSubClass != 0x00)
5687 return -ENODEV;
5688
5689 if ((ov = kmalloc(sizeof(*ov), GFP_KERNEL)) == NULL) {
5690 err("couldn't kmalloc ov struct");
5691 goto error_out;
5692 }
5693
5694 memset(ov, 0, sizeof(*ov));
5695
5696 ov->dev = dev;
5697 ov->iface = idesc->bInterfaceNumber;
5698 ov->led_policy = led;
5699 ov->compress = compress;
5700 ov->lightfreq = lightfreq;
5701 ov->num_inputs = 1; /* Video decoder init functs. change this */
5702 ov->stop_during_set = !fastset;
5703 ov->backlight = backlight;
5704 ov->mirror = mirror;
5705 ov->auto_brt = autobright;
5706 ov->auto_gain = autogain;
5707 ov->auto_exp = autoexp;
5708
5709 switch (le16_to_cpu(dev->descriptor.idProduct)) {
5710 case PROD_OV511:
5711 ov->bridge = BRG_OV511;
5712 ov->bclass = BCL_OV511;
5713 break;
5714 case PROD_OV511PLUS:
5715 ov->bridge = BRG_OV511PLUS;
5716 ov->bclass = BCL_OV511;
5717 break;
5718 case PROD_OV518:
5719 ov->bridge = BRG_OV518;
5720 ov->bclass = BCL_OV518;
5721 break;
5722 case PROD_OV518PLUS:
5723 ov->bridge = BRG_OV518PLUS;
5724 ov->bclass = BCL_OV518;
5725 break;
5726 case PROD_ME2CAM:
5727 if (le16_to_cpu(dev->descriptor.idVendor) != VEND_MATTEL)
5728 goto error;
5729 ov->bridge = BRG_OV511PLUS;
5730 ov->bclass = BCL_OV511;
5731 break;
5732 default:
5733 err("Unknown product ID 0x%04x", le16_to_cpu(dev->descriptor.idProduct));
5734 goto error;
5735 }
5736
5737 info("USB %s video device found", symbolic(brglist, ov->bridge));
5738
5739 init_waitqueue_head(&ov->wq);
5740
5741 mutex_init(&ov->lock); /* to 1 == available */
5742 mutex_init(&ov->buf_lock);
5743 mutex_init(&ov->i2c_lock);
5744 mutex_init(&ov->cbuf_lock);
5745
5746 ov->buf_state = BUF_NOT_ALLOCATED;
5747
5748 if (usb_make_path(dev, ov->usb_path, OV511_USB_PATH_LEN) < 0) {
5749 err("usb_make_path error");
5750 goto error;
5751 }
5752
5753 /* Allocate control transfer buffer. */
5754 /* Must be kmalloc()'ed, for DMA compatibility */
5755 ov->cbuf = kmalloc(OV511_CBUF_SIZE, GFP_KERNEL);
5756 if (!ov->cbuf)
5757 goto error;
5758
5759 if (ov->bclass == BCL_OV518) {
5760 if (ov518_configure(ov) < 0)
5761 goto error;
5762 } else {
5763 if (ov511_configure(ov) < 0)
5764 goto error;
5765 }
5766
5767 for (i = 0; i < OV511_NUMFRAMES; i++) {
5768 ov->frame[i].framenum = i;
5769 init_waitqueue_head(&ov->frame[i].wq);
5770 }
5771
5772 for (i = 0; i < OV511_NUMSBUF; i++) {
5773 ov->sbuf[i].ov = ov;
5774 spin_lock_init(&ov->sbuf[i].lock);
5775 ov->sbuf[i].n = i;
5776 }
5777
5778 /* Unnecessary? (This is done on open(). Need to make sure variables
5779 * are properly initialized without this before removing it, though). */
5780 if (ov51x_set_default_params(ov) < 0)
5781 goto error;
5782
5783 #ifdef OV511_DEBUG
5784 if (dump_bridge) {
5785 if (ov->bclass == BCL_OV511)
5786 ov511_dump_regs(ov);
5787 else
5788 ov518_dump_regs(ov);
5789 }
5790 #endif
5791
5792 ov->vdev = video_device_alloc();
5793 if (!ov->vdev)
5794 goto error;
5795
5796 memcpy(ov->vdev, &vdev_template, sizeof(*ov->vdev));
5797 ov->vdev->dev = &dev->dev;
5798 video_set_drvdata(ov->vdev, ov);
5799
5800 for (i = 0; i < OV511_MAX_UNIT_VIDEO; i++) {
5801 /* Minor 0 cannot be specified; assume user wants autodetect */
5802 if (unit_video[i] == 0)
5803 break;
5804
5805 if (video_register_device(ov->vdev, VFL_TYPE_GRABBER,
5806 unit_video[i]) >= 0) {
5807 break;
5808 }
5809 }
5810
5811 /* Use the next available one */
5812 if ((ov->vdev->minor == -1) &&
5813 video_register_device(ov->vdev, VFL_TYPE_GRABBER, -1) < 0) {
5814 err("video_register_device failed");
5815 goto error;
5816 }
5817
5818 info("Device at %s registered to minor %d", ov->usb_path,
5819 ov->vdev->minor);
5820
5821 usb_set_intfdata(intf, ov);
5822 ov_create_sysfs(ov->vdev);
5823 return 0;
5824
5825 error:
5826 if (ov->vdev) {
5827 if (-1 == ov->vdev->minor)
5828 video_device_release(ov->vdev);
5829 else
5830 video_unregister_device(ov->vdev);
5831 ov->vdev = NULL;
5832 }
5833
5834 if (ov->cbuf) {
5835 mutex_lock(&ov->cbuf_lock);
5836 kfree(ov->cbuf);
5837 ov->cbuf = NULL;
5838 mutex_unlock(&ov->cbuf_lock);
5839 }
5840
5841 kfree(ov);
5842 ov = NULL;
5843
5844 error_out:
5845 err("Camera initialization failed");
5846 return -EIO;
5847 }
5848
5849 static void
5850 ov51x_disconnect(struct usb_interface *intf)
5851 {
5852 struct usb_ov511 *ov = usb_get_intfdata(intf);
5853 int n;
5854
5855 PDEBUG(3, "");
5856
5857 usb_set_intfdata (intf, NULL);
5858
5859 if (!ov)
5860 return;
5861
5862 if (ov->vdev)
5863 video_unregister_device(ov->vdev);
5864
5865 for (n = 0; n < OV511_NUMFRAMES; n++)
5866 ov->frame[n].grabstate = FRAME_ERROR;
5867
5868 ov->curframe = -1;
5869
5870 /* This will cause the process to request another frame */
5871 for (n = 0; n < OV511_NUMFRAMES; n++)
5872 wake_up_interruptible(&ov->frame[n].wq);
5873
5874 wake_up_interruptible(&ov->wq);
5875
5876 ov->streaming = 0;
5877 ov51x_unlink_isoc(ov);
5878
5879 ov->dev = NULL;
5880
5881 /* Free the memory */
5882 if (ov && !ov->user) {
5883 mutex_lock(&ov->cbuf_lock);
5884 kfree(ov->cbuf);
5885 ov->cbuf = NULL;
5886 mutex_unlock(&ov->cbuf_lock);
5887
5888 ov51x_dealloc(ov);
5889 kfree(ov);
5890 ov = NULL;
5891 }
5892
5893 PDEBUG(3, "Disconnect complete");
5894 }
5895
5896 static struct usb_driver ov511_driver = {
5897 .name = "ov511",
5898 .id_table = device_table,
5899 .probe = ov51x_probe,
5900 .disconnect = ov51x_disconnect
5901 };
5902
5903 /****************************************************************************
5904 *
5905 * Module routines
5906 *
5907 ***************************************************************************/
5908
5909 static int __init
5910 usb_ov511_init(void)
5911 {
5912 int retval;
5913
5914 retval = usb_register(&ov511_driver);
5915 if (retval)
5916 goto out;
5917
5918 info(DRIVER_VERSION " : " DRIVER_DESC);
5919
5920 out:
5921 return retval;
5922 }
5923
5924 static void __exit
5925 usb_ov511_exit(void)
5926 {
5927 usb_deregister(&ov511_driver);
5928 info("driver deregistered");
5929
5930 }
5931
5932 module_init(usb_ov511_init);
5933 module_exit(usb_ov511_exit);
5934
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