V4L/DVB (8842): vivi_release(): fix use-after-free
[safe/jmp/linux-2.6] / drivers / media / video / gspca / spca561.c
1 /*
2  * Sunplus spca561 subdriver
3  *
4  * Copyright (C) 2004 Michel Xhaard mxhaard@magic.fr
5  *
6  * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21  */
22
23 #define MODULE_NAME "spca561"
24
25 #include "gspca.h"
26
27 MODULE_AUTHOR("Michel Xhaard <mxhaard@users.sourceforge.net>");
28 MODULE_DESCRIPTION("GSPCA/SPCA561 USB Camera Driver");
29 MODULE_LICENSE("GPL");
30
31 /* specific webcam descriptor */
32 struct sd {
33         struct gspca_dev gspca_dev;     /* !! must be the first item */
34
35         __u16 contrast;                 /* rev72a only */
36 #define CONTRAST_MIN 0x0000
37 #define CONTRAST_DEF 0x2000
38 #define CONTRAST_MAX 0x3fff
39
40         __u16 exposure;                 /* rev12a only */
41 #define EXPOSURE_MIN 0
42 #define EXPOSURE_DEF 200
43 #define EXPOSURE_MAX 762
44
45         __u8 brightness;                /* rev72a only */
46 #define BRIGHTNESS_MIN 0
47 #define BRIGHTNESS_DEF 32
48 #define BRIGHTNESS_MAX 63
49
50         __u8 white;                     /* rev12a only */
51 #define WHITE_MIN 1
52 #define WHITE_DEF 0x40
53 #define WHITE_MAX 0x7f
54
55         __u8 autogain;
56 #define AUTOGAIN_MIN 0
57 #define AUTOGAIN_DEF 1
58 #define AUTOGAIN_MAX 1
59
60         __u8 gain;                      /* rev12a only */
61 #define GAIN_MIN 0x0
62 #define GAIN_DEF 0x24
63 #define GAIN_MAX 0x24
64
65 #define EXPO12A_DEF 3
66         __u8 expo12a;           /* expo/gain? for rev 12a */
67
68         __u8 chip_revision;
69 #define Rev012A 0
70 #define Rev072A 1
71
72         signed char ag_cnt;
73 #define AG_CNT_START 13
74 };
75
76 static struct v4l2_pix_format sif_mode[] = {
77         {160, 120, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
78                 .bytesperline = 160,
79                 .sizeimage = 160 * 120,
80                 .colorspace = V4L2_COLORSPACE_SRGB,
81                 .priv = 3},
82         {176, 144, V4L2_PIX_FMT_SGBRG8, V4L2_FIELD_NONE,
83                 .bytesperline = 176,
84                 .sizeimage = 176 * 144,
85                 .colorspace = V4L2_COLORSPACE_SRGB,
86                 .priv = 2},
87         {320, 240, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
88                 .bytesperline = 320,
89                 .sizeimage = 320 * 240 * 4 / 8,
90                 .colorspace = V4L2_COLORSPACE_SRGB,
91                 .priv = 1},
92         {352, 288, V4L2_PIX_FMT_SPCA561, V4L2_FIELD_NONE,
93                 .bytesperline = 352,
94                 .sizeimage = 352 * 288 * 4 / 8,
95                 .colorspace = V4L2_COLORSPACE_SRGB,
96                 .priv = 0},
97 };
98
99 /*
100  * Initialization data
101  * I'm not very sure how to split initialization from open data
102  * chunks. For now, we'll consider everything as initialization
103  */
104 /* Frame packet header offsets for the spca561 */
105 #define SPCA561_OFFSET_SNAP 1
106 #define SPCA561_OFFSET_TYPE 2
107 #define SPCA561_OFFSET_COMPRESS 3
108 #define SPCA561_OFFSET_FRAMSEQ   4
109 #define SPCA561_OFFSET_GPIO 5
110 #define SPCA561_OFFSET_USBBUFF 6
111 #define SPCA561_OFFSET_WIN2GRAVE 7
112 #define SPCA561_OFFSET_WIN2RAVE 8
113 #define SPCA561_OFFSET_WIN2BAVE 9
114 #define SPCA561_OFFSET_WIN2GBAVE 10
115 #define SPCA561_OFFSET_WIN1GRAVE 11
116 #define SPCA561_OFFSET_WIN1RAVE 12
117 #define SPCA561_OFFSET_WIN1BAVE 13
118 #define SPCA561_OFFSET_WIN1GBAVE 14
119 #define SPCA561_OFFSET_FREQ 15
120 #define SPCA561_OFFSET_VSYNC 16
121 #define SPCA561_OFFSET_DATA 1
122 #define SPCA561_INDEX_I2C_BASE 0x8800
123 #define SPCA561_SNAPBIT 0x20
124 #define SPCA561_SNAPCTRL 0x40
125
126 static void reg_w_val(struct usb_device *dev, __u16 index, __u8 value)
127 {
128         int ret;
129
130         ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
131                               0,                /* request */
132                               USB_TYPE_VENDOR | USB_RECIP_DEVICE,
133                               value, index, NULL, 0, 500);
134         PDEBUG(D_USBO, "reg write: 0x%02x:0x%02x", index, value);
135         if (ret < 0)
136                 PDEBUG(D_ERR, "reg write: error %d", ret);
137 }
138
139 static void write_vector(struct gspca_dev *gspca_dev,
140                         const __u16 data[][2])
141 {
142         struct usb_device *dev = gspca_dev->dev;
143         int i;
144
145         i = 0;
146         while (data[i][1] != 0) {
147                 reg_w_val(dev, data[i][1], data[i][0]);
148                 i++;
149         }
150 }
151
152 /* read 'len' bytes to gspca_dev->usb_buf */
153 static void reg_r(struct gspca_dev *gspca_dev,
154                   __u16 index, __u16 length)
155 {
156         usb_control_msg(gspca_dev->dev,
157                         usb_rcvctrlpipe(gspca_dev->dev, 0),
158                         0,                      /* request */
159                         USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
160                         0,                      /* value */
161                         index, gspca_dev->usb_buf, length, 500);
162 }
163
164 static void reg_w_buf(struct gspca_dev *gspca_dev,
165                       __u16 index, const __u8 *buffer, __u16 len)
166 {
167         memcpy(gspca_dev->usb_buf, buffer, len);
168         usb_control_msg(gspca_dev->dev,
169                         usb_sndctrlpipe(gspca_dev->dev, 0),
170                         0,                      /* request */
171                         USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
172                         0,                      /* value */
173                         index, gspca_dev->usb_buf, len, 500);
174 }
175
176 static void i2c_write(struct gspca_dev *gspca_dev, __u16 valeur, __u16 reg)
177 {
178         int retry = 60;
179         __u8 DataLow;
180         __u8 DataHight;
181
182         DataLow = valeur;
183         DataHight = valeur >> 8;
184         reg_w_val(gspca_dev->dev, 0x8801, reg);
185         reg_w_val(gspca_dev->dev, 0x8805, DataLow);
186         reg_w_val(gspca_dev->dev, 0x8800, DataHight);
187         while (retry--) {
188                 reg_r(gspca_dev, 0x8803, 1);
189                 if (!gspca_dev->usb_buf[0])
190                         break;
191         }
192 }
193
194 static int i2c_read(struct gspca_dev *gspca_dev, __u16 reg, __u8 mode)
195 {
196         int retry = 60;
197         __u8 value;
198         __u8 vallsb;
199
200         reg_w_val(gspca_dev->dev, 0x8804, 0x92);
201         reg_w_val(gspca_dev->dev, 0x8801, reg);
202         reg_w_val(gspca_dev->dev, 0x8802, (mode | 0x01));
203         while (retry--) {
204                 reg_r(gspca_dev, 0x8803, 1);
205                 if (!gspca_dev->usb_buf)
206                         break;
207         }
208         if (retry == 0)
209                 return -1;
210         reg_r(gspca_dev, 0x8800, 1);
211         value = gspca_dev->usb_buf[0];
212         reg_r(gspca_dev, 0x8805, 1);
213         vallsb = gspca_dev->usb_buf[0];
214         return ((int) value << 8) | vallsb;
215 }
216
217 static const __u16 spca561_init_data[][2] = {
218         {0x0000, 0x8114},       /* Software GPIO output data */
219         {0x0001, 0x8114},       /* Software GPIO output data */
220         {0x0000, 0x8112},       /* Some kind of reset */
221         {0x0003, 0x8701},       /* PCLK clock delay adjustment */
222         {0x0001, 0x8703},       /* HSYNC from cmos inverted */
223         {0x0011, 0x8118},       /* Enable and conf sensor */
224         {0x0001, 0x8118},       /* Conf sensor */
225         {0x0092, 0x8804},       /* I know nothing about these */
226         {0x0010, 0x8802},       /* 0x88xx registers, so I won't */
227         /***************/
228         {0x000d, 0x8805},       /* sensor default setting */
229         {0x0001, 0x8801},       /* 1 <- 0x0d */
230         {0x0000, 0x8800},
231         {0x0018, 0x8805},
232         {0x0002, 0x8801},       /* 2 <- 0x18 */
233         {0x0000, 0x8800},
234         {0x0065, 0x8805},
235         {0x0004, 0x8801},       /* 4 <- 0x01 0x65 */
236         {0x0001, 0x8800},
237         {0x0021, 0x8805},
238         {0x0005, 0x8801},       /* 5 <- 0x21 */
239         {0x0000, 0x8800},
240         {0x00aa, 0x8805},
241         {0x0007, 0x8801},       /* 7 <- 0xaa */
242         {0x0000, 0x8800},
243         {0x0004, 0x8805},
244         {0x0020, 0x8801},       /* 0x20 <- 0x15 0x04 */
245         {0x0015, 0x8800},
246         {0x0002, 0x8805},
247         {0x0039, 0x8801},       /* 0x39 <- 0x02 */
248         {0x0000, 0x8800},
249         {0x0010, 0x8805},
250         {0x0035, 0x8801},       /* 0x35 <- 0x10 */
251         {0x0000, 0x8800},
252         {0x0049, 0x8805},
253         {0x0009, 0x8801},       /* 0x09 <- 0x10 0x49 */
254         {0x0010, 0x8800},
255         {0x000b, 0x8805},
256         {0x0028, 0x8801},       /* 0x28 <- 0x0b */
257         {0x0000, 0x8800},
258         {0x000f, 0x8805},
259         {0x003b, 0x8801},       /* 0x3b <- 0x0f */
260         {0x0000, 0x8800},
261         {0x0000, 0x8805},
262         {0x003c, 0x8801},       /* 0x3c <- 0x00 */
263         {0x0000, 0x8800},
264         /***************/
265         {0x0018, 0x8601},       /* Pixel/line selection for color separation */
266         {0x0000, 0x8602},       /* Optical black level for user setting */
267         {0x0060, 0x8604},       /* Optical black horizontal offset */
268         {0x0002, 0x8605},       /* Optical black vertical offset */
269         {0x0000, 0x8603},       /* Non-automatic optical black level */
270         {0x0002, 0x865b},       /* Horizontal offset for valid pixels */
271         {0x0000, 0x865f},       /* Vertical valid pixels window (x2) */
272         {0x00b0, 0x865d},       /* Horizontal valid pixels window (x2) */
273         {0x0090, 0x865e},       /* Vertical valid lines window (x2) */
274         {0x00e0, 0x8406},       /* Memory buffer threshold */
275         {0x0000, 0x8660},       /* Compensation memory stuff */
276         {0x0002, 0x8201},       /* Output address for r/w serial EEPROM */
277         {0x0008, 0x8200},       /* Clear valid bit for serial EEPROM */
278         {0x0001, 0x8200},       /* OprMode to be executed by hardware */
279         {0x0007, 0x8201},       /* Output address for r/w serial EEPROM */
280         {0x0008, 0x8200},       /* Clear valid bit for serial EEPROM */
281         {0x0001, 0x8200},       /* OprMode to be executed by hardware */
282         {0x0010, 0x8660},       /* Compensation memory stuff */
283         {0x0018, 0x8660},       /* Compensation memory stuff */
284
285         {0x0004, 0x8611},       /* R offset for white balance */
286         {0x0004, 0x8612},       /* Gr offset for white balance */
287         {0x0007, 0x8613},       /* B offset for white balance */
288         {0x0000, 0x8614},       /* Gb offset for white balance */
289         {0x008c, 0x8651},       /* R gain for white balance */
290         {0x008c, 0x8652},       /* Gr gain for white balance */
291         {0x00b5, 0x8653},       /* B gain for white balance */
292         {0x008c, 0x8654},       /* Gb gain for white balance */
293         {0x0002, 0x8502},       /* Maximum average bit rate stuff */
294
295         {0x0011, 0x8802},
296         {0x0087, 0x8700},       /* Set master clock (96Mhz????) */
297         {0x0081, 0x8702},       /* Master clock output enable */
298
299         {0x0000, 0x8500},       /* Set image type (352x288 no compression) */
300         /* Originally was 0x0010 (352x288 compression) */
301
302         {0x0002, 0x865b},       /* Horizontal offset for valid pixels */
303         {0x0003, 0x865c},       /* Vertical offset for valid lines */
304         /***************//* sensor active */
305         {0x0003, 0x8801},       /* 0x03 <- 0x01 0x21 //289 */
306         {0x0021, 0x8805},
307         {0x0001, 0x8800},
308         {0x0004, 0x8801},       /* 0x04 <- 0x01 0x65 //357 */
309         {0x0065, 0x8805},
310         {0x0001, 0x8800},
311         {0x0005, 0x8801},       /* 0x05 <- 0x2f */
312         {0x002f, 0x8805},
313         {0x0000, 0x8800},
314         {0x0006, 0x8801},       /* 0x06 <- 0 */
315         {0x0000, 0x8805},
316         {0x0000, 0x8800},
317         {0x000a, 0x8801},       /* 0x0a <- 2 */
318         {0x0002, 0x8805},
319         {0x0000, 0x8800},
320         {0x0009, 0x8801},       /* 0x09 <- 0x1061 */
321         {0x0061, 0x8805},
322         {0x0010, 0x8800},
323         {0x0035, 0x8801},       /* 0x35 <-0x14 */
324         {0x0014, 0x8805},
325         {0x0000, 0x8800},
326         {0x0030, 0x8112},       /* ISO and drop packet enable */
327         {0x0000, 0x8112},       /* Some kind of reset ???? */
328         {0x0009, 0x8118},       /* Enable sensor and set standby */
329         {0x0000, 0x8114},       /* Software GPIO output data */
330         {0x0000, 0x8114},       /* Software GPIO output data */
331         {0x0001, 0x8114},       /* Software GPIO output data */
332         {0x0000, 0x8112},       /* Some kind of reset ??? */
333         {0x0003, 0x8701},
334         {0x0001, 0x8703},
335         {0x0011, 0x8118},
336         {0x0001, 0x8118},
337         /***************/
338         {0x0092, 0x8804},
339         {0x0010, 0x8802},
340         {0x000d, 0x8805},
341         {0x0001, 0x8801},
342         {0x0000, 0x8800},
343         {0x0018, 0x8805},
344         {0x0002, 0x8801},
345         {0x0000, 0x8800},
346         {0x0065, 0x8805},
347         {0x0004, 0x8801},
348         {0x0001, 0x8800},
349         {0x0021, 0x8805},
350         {0x0005, 0x8801},
351         {0x0000, 0x8800},
352         {0x00aa, 0x8805},
353         {0x0007, 0x8801},       /* mode 0xaa */
354         {0x0000, 0x8800},
355         {0x0004, 0x8805},
356         {0x0020, 0x8801},
357         {0x0015, 0x8800},       /* mode 0x0415 */
358         {0x0002, 0x8805},
359         {0x0039, 0x8801},
360         {0x0000, 0x8800},
361         {0x0010, 0x8805},
362         {0x0035, 0x8801},
363         {0x0000, 0x8800},
364         {0x0049, 0x8805},
365         {0x0009, 0x8801},
366         {0x0010, 0x8800},
367         {0x000b, 0x8805},
368         {0x0028, 0x8801},
369         {0x0000, 0x8800},
370         {0x000f, 0x8805},
371         {0x003b, 0x8801},
372         {0x0000, 0x8800},
373         {0x0000, 0x8805},
374         {0x003c, 0x8801},
375         {0x0000, 0x8800},
376         {0x0002, 0x8502},
377         {0x0039, 0x8801},
378         {0x0000, 0x8805},
379         {0x0000, 0x8800},
380
381         {0x0087, 0x8700},       /* overwrite by start */
382         {0x0081, 0x8702},
383         {0x0000, 0x8500},
384 /*      {0x0010, 0x8500},  -- Previous line was this */
385         {0x0002, 0x865b},
386         {0x0003, 0x865c},
387         /***************/
388         {0x0003, 0x8801},       /* 0x121-> 289 */
389         {0x0021, 0x8805},
390         {0x0001, 0x8800},
391         {0x0004, 0x8801},       /* 0x165 -> 357 */
392         {0x0065, 0x8805},
393         {0x0001, 0x8800},
394         {0x0005, 0x8801},       /* 0x2f //blanking control colonne */
395         {0x002f, 0x8805},
396         {0x0000, 0x8800},
397         {0x0006, 0x8801},       /* 0x00 //blanking mode row */
398         {0x0000, 0x8805},
399         {0x0000, 0x8800},
400         {0x000a, 0x8801},       /* 0x01 //0x02 */
401         {0x0001, 0x8805},
402         {0x0000, 0x8800},
403         {0x0009, 0x8801},       /* 0x1061 - setexposure times && pixel clock
404                                  * 0001 0 | 000 0110 0001 */
405         {0x0061, 0x8805},       /* 61 31 */
406         {0x0008, 0x8800},       /* 08 */
407         {0x0035, 0x8801},       /* 0x14 - set gain general */
408         {0x001f, 0x8805},       /* 0x14 */
409         {0x0000, 0x8800},
410         {0x000e, 0x8112},       /* white balance - was 30 */
411         {}
412 };
413
414
415 /******************** QC Express etch2 stuff ********************/
416 static const __u16 Pb100_1map8300[][2] = {
417         /* reg, value */
418         {0x8320, 0x3304},
419
420         {0x8303, 0x0125},       /* image area */
421         {0x8304, 0x0169},
422         {0x8328, 0x000b},
423         {0x833c, 0x0001},               /*fixme: win:07*/
424
425         {0x832f, 0x1904},               /*fixme: was 0419*/
426         {0x8307, 0x00aa},
427         {0x8301, 0x0003},
428         {0x8302, 0x000e},
429         {}
430 };
431 static const __u16 Pb100_2map8300[][2] = {
432         /* reg, value */
433         {0x8339, 0x0000},
434         {0x8307, 0x00aa},
435         {}
436 };
437
438 static const __u16 spca561_161rev12A_data1[][2] = {
439         {0x29, 0x8118},         /* white balance - was 21 */
440         {0x08, 0x8114},         /* white balance - was 01 */
441         {0x0e, 0x8112},         /* white balance - was 00 */
442         {0x00, 0x8102},         /* white balance - new */
443         {0x92, 0x8804},
444         {0x04, 0x8802},         /* windows uses 08 */
445         {}
446 };
447 static const __u16 spca561_161rev12A_data2[][2] = {
448         {0x21, 0x8118},
449         {0x10, 0x8500},
450         {0x07, 0x8601},
451         {0x07, 0x8602},
452         {0x04, 0x8501},
453         {0x21, 0x8118},
454
455         {0x07, 0x8201},         /* windows uses 02 */
456         {0x08, 0x8200},
457         {0x01, 0x8200},
458
459         {0x00, 0x8114},
460         {0x01, 0x8114},         /* windows uses 00 */
461
462         {0x90, 0x8604},
463         {0x00, 0x8605},
464         {0xb0, 0x8603},
465
466         /* sensor gains */
467         {0x07, 0x8601},         /* white balance - new */
468         {0x07, 0x8602},         /* white balance - new */
469         {0x00, 0x8610},         /* *red */
470         {0x00, 0x8611},         /* 3f   *green */
471         {0x00, 0x8612},         /* green *blue */
472         {0x00, 0x8613},         /* blue *green */
473         {0x43, 0x8614},         /* green *red - white balance - was 0x35 */
474         {0x40, 0x8615},         /* 40   *green - white balance - was 0x35 */
475         {0x71, 0x8616},         /* 7a   *blue - white balance - was 0x35 */
476         {0x40, 0x8617},         /* 40   *green - white balance - was 0x35 */
477
478         {0x0c, 0x8620},         /* 0c */
479         {0xc8, 0x8631},         /* c8 */
480         {0xc8, 0x8634},         /* c8 */
481         {0x23, 0x8635},         /* 23 */
482         {0x1f, 0x8636},         /* 1f */
483         {0xdd, 0x8637},         /* dd */
484         {0xe1, 0x8638},         /* e1 */
485         {0x1d, 0x8639},         /* 1d */
486         {0x21, 0x863a},         /* 21 */
487         {0xe3, 0x863b},         /* e3 */
488         {0xdf, 0x863c},         /* df */
489         {0xf0, 0x8505},
490         {0x32, 0x850a},
491 /*      {0x99, 0x8700},          * - white balance - new (removed) */
492         {}
493 };
494
495 static void sensor_mapwrite(struct gspca_dev *gspca_dev,
496                             const __u16 sensormap[][2])
497 {
498         int i = 0;
499         __u8 usbval[2];
500
501         while (sensormap[i][0]) {
502                 usbval[0] = sensormap[i][1];
503                 usbval[1] = sensormap[i][1] >> 8;
504                 reg_w_buf(gspca_dev, sensormap[i][0], usbval, 2);
505                 i++;
506         }
507 }
508 static void init_161rev12A(struct gspca_dev *gspca_dev)
509 {
510 /*      sensor_reset(gspca_dev);        (not in win) */
511         write_vector(gspca_dev, spca561_161rev12A_data1);
512         sensor_mapwrite(gspca_dev, Pb100_1map8300);
513 /*fixme: should be in sd_start*/
514         write_vector(gspca_dev, spca561_161rev12A_data2);
515         sensor_mapwrite(gspca_dev, Pb100_2map8300);
516 }
517
518 /* this function is called at probe time */
519 static int sd_config(struct gspca_dev *gspca_dev,
520                      const struct usb_device_id *id)
521 {
522         struct sd *sd = (struct sd *) gspca_dev;
523         struct cam *cam;
524         __u16 vendor, product;
525         __u8 data1, data2;
526
527         /* Read frm global register the USB product and vendor IDs, just to
528          * prove that we can communicate with the device.  This works, which
529          * confirms at we are communicating properly and that the device
530          * is a 561. */
531         reg_r(gspca_dev, 0x8104, 1);
532         data1 = gspca_dev->usb_buf[0];
533         reg_r(gspca_dev, 0x8105, 1);
534         data2 = gspca_dev->usb_buf[0];
535         vendor = (data2 << 8) | data1;
536         reg_r(gspca_dev, 0x8106, 1);
537         data1 = gspca_dev->usb_buf[0];
538         reg_r(gspca_dev, 0x8107, 1);
539         data2 = gspca_dev->usb_buf[0];
540         product = (data2 << 8) | data1;
541         if (vendor != id->idVendor || product != id->idProduct) {
542                 PDEBUG(D_PROBE, "Bad vendor / product from device");
543                 return -EINVAL;
544         }
545
546         cam = &gspca_dev->cam;
547         cam->epaddr = 0x01;
548         gspca_dev->nbalt = 7 + 1;       /* choose alternate 7 first */
549         cam->cam_mode = sif_mode;
550         cam->nmodes = ARRAY_SIZE(sif_mode);
551
552         sd->chip_revision = id->driver_info;
553         sd->brightness = BRIGHTNESS_DEF;
554         sd->contrast = CONTRAST_DEF;
555         sd->white = WHITE_DEF;
556         sd->exposure = EXPOSURE_DEF;
557         sd->autogain = AUTOGAIN_DEF;
558         sd->gain = GAIN_DEF;
559         sd->expo12a = EXPO12A_DEF;
560         return 0;
561 }
562
563 /* this function is called at probe and resume time */
564 static int sd_init_12a(struct gspca_dev *gspca_dev)
565 {
566         PDEBUG(D_STREAM, "Chip revision: 012a");
567         init_161rev12A(gspca_dev);
568         return 0;
569 }
570 static int sd_init_72a(struct gspca_dev *gspca_dev)
571 {
572         PDEBUG(D_STREAM, "Chip revision: 072a");
573         write_vector(gspca_dev, spca561_init_data);
574         return 0;
575 }
576
577 static void setcontrast(struct gspca_dev *gspca_dev)
578 {
579         struct sd *sd = (struct sd *) gspca_dev;
580         struct usb_device *dev = gspca_dev->dev;
581         __u8 lowb;
582
583         switch (sd->chip_revision) {
584         case Rev072A:
585                 lowb = sd->contrast >> 8;
586                 reg_w_val(dev, 0x8651, lowb);
587                 reg_w_val(dev, 0x8652, lowb);
588                 reg_w_val(dev, 0x8653, lowb);
589                 reg_w_val(dev, 0x8654, lowb);
590                 break;
591         default: {
592 /*      case Rev012A: { */
593                 static const __u8 Reg8391[] =
594                         { 0x92, 0x30, 0x20, 0x00, 0x0c, 0x00, 0x00, 0x00 };
595
596                 reg_w_buf(gspca_dev, 0x8391, Reg8391, 8);
597                 reg_w_buf(gspca_dev, 0x8390, Reg8391, 8);
598                 break;
599             }
600         }
601 }
602
603 /* rev12a only */
604 static void setwhite(struct gspca_dev *gspca_dev)
605 {
606         struct sd *sd = (struct sd *) gspca_dev;
607         __u16 white;
608         __u8 reg8614, reg8616;
609
610         white = sd->white;
611         /* try to emulate MS-win as possible */
612         reg8616 = 0x90 - white * 5 / 8;
613         reg_w_val(gspca_dev->dev, 0x8616, reg8616);
614         reg8614 = 0x20 + white * 3 / 8;
615         reg_w_val(gspca_dev->dev, 0x8614, reg8614);
616 }
617
618 /* rev 12a only */
619 static void setexposure(struct gspca_dev *gspca_dev)
620 {
621         struct sd *sd = (struct sd *) gspca_dev;
622         int expo;
623         __u8 data[2];
624
625         expo = sd->exposure + 0x20a8;   /* from test */
626         data[0] = expo;
627         data[1] = expo >> 8;
628         reg_w_buf(gspca_dev, 0x8309, data, 2);
629 }
630
631 /* rev 12a only */
632 static void setgain(struct gspca_dev *gspca_dev)
633 {
634         struct sd *sd = (struct sd *) gspca_dev;
635         __u8 data[2];
636
637         data[0] = sd->gain;
638         data[1] = 0;
639         reg_w_buf(gspca_dev, 0x8335, data, 2);
640 }
641
642 static void setautogain(struct gspca_dev *gspca_dev)
643 {
644         struct sd *sd = (struct sd *) gspca_dev;
645
646         if (sd->autogain)
647                 sd->ag_cnt = AG_CNT_START;
648         else
649                 sd->ag_cnt = -1;
650 }
651
652 static void sd_start_12a(struct gspca_dev *gspca_dev)
653 {
654         struct usb_device *dev = gspca_dev->dev;
655         int Clck;
656         __u8 Reg8307[] = { 0xaa, 0x00 };
657         int mode;
658
659         mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
660         switch (mode) {
661         case 0:
662         case 1:
663                 Clck = 0x8a;
664                 break;
665         case 2:
666                 Clck = 0x85;
667                 break;
668         default:
669                 Clck = 0x83;
670                 break;
671         }
672         if (mode <= 1) {
673                 /* Use compression on 320x240 and above */
674                 reg_w_val(dev, 0x8500, 0x10 | mode);
675         } else {
676                 /* I couldn't get the compression to work below 320x240
677                  * Fortunately at these resolutions the bandwidth
678                  * is sufficient to push raw frames at ~20fps */
679                 reg_w_val(dev, 0x8500, mode);
680         }               /* -- qq@kuku.eu.org */
681         reg_w_buf(gspca_dev, 0x8307, Reg8307, 2);
682         reg_w_val(gspca_dev->dev, 0x8700, Clck);
683                                         /* 0x8f 0x85 0x27 clock */
684         reg_w_val(gspca_dev->dev, 0x8112, 0x1e | 0x20);
685         reg_w_val(gspca_dev->dev, 0x850b, 0x03);
686         setcontrast(gspca_dev);
687         setwhite(gspca_dev);
688         setautogain(gspca_dev);
689 }
690 static void sd_start_72a(struct gspca_dev *gspca_dev)
691 {
692         struct usb_device *dev = gspca_dev->dev;
693         int Clck;
694         int mode;
695
696         mode = gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv;
697         switch (mode) {
698         default:
699 /*      case 0:
700         case 1: */
701                 Clck = 0x25;
702                 break;
703         case 2:
704                 Clck = 0x22;
705                 break;
706         case 3:
707                 Clck = 0x21;
708                 break;
709         }
710         reg_w_val(dev, 0x8500, mode);   /* mode */
711         reg_w_val(dev, 0x8700, Clck);   /* 0x27 clock */
712         reg_w_val(dev, 0x8112, 0x10 | 0x20);
713         setautogain(gspca_dev);
714 }
715
716 static void sd_stopN(struct gspca_dev *gspca_dev)
717 {
718         struct sd *sd = (struct sd *) gspca_dev;
719
720         if (sd->chip_revision == Rev012A) {
721                 reg_w_val(gspca_dev->dev, 0x8112, 0x0e);
722         } else {
723                 reg_w_val(gspca_dev->dev, 0x8112, 0x20);
724 /*              reg_w_val(gspca_dev->dev, 0x8102, 0x00); ?? */
725         }
726 }
727
728 static void sd_stop0(struct gspca_dev *gspca_dev)
729 {
730         struct sd *sd = (struct sd *) gspca_dev;
731
732         if (sd->chip_revision == Rev012A) {
733                 reg_w_val(gspca_dev->dev, 0x8118, 0x29);
734                 reg_w_val(gspca_dev->dev, 0x8114, 0x08);
735         }
736 /*      reg_w_val(gspca_dev->dev, 0x8114, 0); */
737 }
738
739 static void do_autogain(struct gspca_dev *gspca_dev)
740 {
741         struct sd *sd = (struct sd *) gspca_dev;
742         int expotimes;
743         int pixelclk;
744         int gainG;
745         __u8 R, Gr, Gb, B;
746         int y;
747         __u8 luma_mean = 110;
748         __u8 luma_delta = 20;
749         __u8 spring = 4;
750         __u8 reg8339[2];
751
752         if (sd->ag_cnt < 0)
753                 return;
754         if (--sd->ag_cnt >= 0)
755                 return;
756         sd->ag_cnt = AG_CNT_START;
757
758         switch (sd->chip_revision) {
759         case Rev072A:
760                 reg_r(gspca_dev, 0x8621, 1);
761                 Gr = gspca_dev->usb_buf[0];
762                 reg_r(gspca_dev, 0x8622, 1);
763                 R = gspca_dev->usb_buf[0];
764                 reg_r(gspca_dev, 0x8623, 1);
765                 B = gspca_dev->usb_buf[0];
766                 reg_r(gspca_dev, 0x8624, 1);
767                 Gb = gspca_dev->usb_buf[0];
768                 y = (77 * R + 75 * (Gr + Gb) + 29 * B) >> 8;
769                 /* u= (128*B-(43*(Gr+Gb+R))) >> 8; */
770                 /* v= (128*R-(53*(Gr+Gb))-21*B) >> 8; */
771                 /* PDEBUG(D_CONF,"reading Y %d U %d V %d ",y,u,v); */
772
773                 if (y < luma_mean - luma_delta ||
774                     y > luma_mean + luma_delta) {
775                         expotimes = i2c_read(gspca_dev, 0x09, 0x10);
776                         pixelclk = 0x0800;
777                         expotimes = expotimes & 0x07ff;
778                         /* PDEBUG(D_PACK,
779                                 "Exposition Times 0x%03X Clock 0x%04X ",
780                                 expotimes,pixelclk); */
781                         gainG = i2c_read(gspca_dev, 0x35, 0x10);
782                         /* PDEBUG(D_PACK,
783                                 "reading Gain register %d", gainG); */
784
785                         expotimes += (luma_mean - y) >> spring;
786                         gainG += (luma_mean - y) / 50;
787                         /* PDEBUG(D_PACK,
788                                 "compute expotimes %d gain %d",
789                                 expotimes,gainG); */
790
791                         if (gainG > 0x3f)
792                                 gainG = 0x3f;
793                         else if (gainG < 4)
794                                 gainG = 3;
795                         i2c_write(gspca_dev, gainG, 0x35);
796
797                         if (expotimes >= 0x0256)
798                                 expotimes = 0x0256;
799                         else if (expotimes < 4)
800                                 expotimes = 3;
801                         i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
802                 }
803                 break;
804         case Rev012A:
805                 reg_r(gspca_dev, 0x8330, 2);
806                 if (gspca_dev->usb_buf[1] > 0x08) {
807                         reg8339[0] = ++sd->expo12a;
808                         reg8339[1] = 0;
809                         reg_w_buf(gspca_dev, 0x8339, reg8339, 2);
810                 } else if (gspca_dev->usb_buf[1] < 0x02) {
811                         reg8339[0] = --sd->expo12a;
812                         reg8339[1] = 0;
813                         reg_w_buf(gspca_dev, 0x8339, reg8339, 2);
814                 }
815                 break;
816         }
817 }
818
819 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
820                         struct gspca_frame *frame, /* target */
821                         __u8 *data,             /* isoc packet */
822                         int len)                /* iso packet length */
823 {
824         switch (data[0]) {
825         case 0:         /* start of frame */
826                 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
827                                         data, 0);
828                 data += SPCA561_OFFSET_DATA;
829                 len -= SPCA561_OFFSET_DATA;
830                 if (data[1] & 0x10) {
831                         /* compressed bayer */
832                         gspca_frame_add(gspca_dev, FIRST_PACKET,
833                                         frame, data, len);
834                 } else {
835                         /* raw bayer (with a header, which we skip) */
836                         data += 20;
837                         len -= 20;
838                         gspca_frame_add(gspca_dev, FIRST_PACKET,
839                                                 frame, data, len);
840                 }
841                 return;
842         case 0xff:              /* drop */
843 /*              gspca_dev->last_packet_type = DISCARD_PACKET; */
844                 return;
845         }
846         data++;
847         len--;
848         gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
849 }
850
851 /* rev 72a only */
852 static void setbrightness(struct gspca_dev *gspca_dev)
853 {
854         struct sd *sd = (struct sd *) gspca_dev;
855         __u8 value;
856
857         value = sd->brightness;
858         reg_w_val(gspca_dev->dev, 0x8611, value);
859         reg_w_val(gspca_dev->dev, 0x8612, value);
860         reg_w_val(gspca_dev->dev, 0x8613, value);
861         reg_w_val(gspca_dev->dev, 0x8614, value);
862 }
863
864 static void getbrightness(struct gspca_dev *gspca_dev)
865 {
866         struct sd *sd = (struct sd *) gspca_dev;
867         __u16 tot;
868
869         tot = 0;
870         reg_r(gspca_dev, 0x8611, 1);
871         tot += gspca_dev->usb_buf[0];
872         reg_r(gspca_dev, 0x8612, 1);
873         tot += gspca_dev->usb_buf[0];
874         reg_r(gspca_dev, 0x8613, 1);
875         tot += gspca_dev->usb_buf[0];
876         reg_r(gspca_dev, 0x8614, 1);
877         tot += gspca_dev->usb_buf[0];
878         sd->brightness = tot >> 2;
879 }
880
881 /* rev72a only */
882 static void getcontrast(struct gspca_dev *gspca_dev)
883 {
884         struct sd *sd = (struct sd *) gspca_dev;
885         __u16 tot;
886
887         tot = 0;
888         reg_r(gspca_dev, 0x8651, 1);
889         tot += gspca_dev->usb_buf[0];
890         reg_r(gspca_dev, 0x8652, 1);
891         tot += gspca_dev->usb_buf[0];
892         reg_r(gspca_dev, 0x8653, 1);
893         tot += gspca_dev->usb_buf[0];
894         reg_r(gspca_dev, 0x8654, 1);
895         tot += gspca_dev->usb_buf[0];
896         sd->contrast = tot << 6;
897         PDEBUG(D_CONF, "get contrast %d", sd->contrast);
898 }
899
900 /* rev 72a only */
901 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
902 {
903         struct sd *sd = (struct sd *) gspca_dev;
904
905         sd->brightness = val;
906         if (gspca_dev->streaming)
907                 setbrightness(gspca_dev);
908         return 0;
909 }
910
911 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
912 {
913         struct sd *sd = (struct sd *) gspca_dev;
914
915         getbrightness(gspca_dev);
916         *val = sd->brightness;
917         return 0;
918 }
919
920 /* rev 72a only */
921 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
922 {
923         struct sd *sd = (struct sd *) gspca_dev;
924
925         sd->contrast = val;
926         if (gspca_dev->streaming)
927                 setcontrast(gspca_dev);
928         return 0;
929 }
930
931 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
932 {
933         struct sd *sd = (struct sd *) gspca_dev;
934
935         getcontrast(gspca_dev);
936         *val = sd->contrast;
937         return 0;
938 }
939
940 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
941 {
942         struct sd *sd = (struct sd *) gspca_dev;
943
944         sd->autogain = val;
945         if (gspca_dev->streaming)
946                 setautogain(gspca_dev);
947         return 0;
948 }
949
950 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
951 {
952         struct sd *sd = (struct sd *) gspca_dev;
953
954         *val = sd->autogain;
955         return 0;
956 }
957
958 /* rev12a only */
959 static int sd_setwhite(struct gspca_dev *gspca_dev, __s32 val)
960 {
961         struct sd *sd = (struct sd *) gspca_dev;
962
963         sd->white = val;
964         if (gspca_dev->streaming)
965                 setwhite(gspca_dev);
966         return 0;
967 }
968
969 static int sd_getwhite(struct gspca_dev *gspca_dev, __s32 *val)
970 {
971         struct sd *sd = (struct sd *) gspca_dev;
972
973         *val = sd->white;
974         return 0;
975 }
976
977 /* rev12a only */
978 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
979 {
980         struct sd *sd = (struct sd *) gspca_dev;
981
982         sd->exposure = val;
983         if (gspca_dev->streaming)
984                 setexposure(gspca_dev);
985         return 0;
986 }
987
988 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
989 {
990         struct sd *sd = (struct sd *) gspca_dev;
991
992         *val = sd->exposure;
993         return 0;
994 }
995
996 /* rev12a only */
997 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
998 {
999         struct sd *sd = (struct sd *) gspca_dev;
1000
1001         sd->gain = val;
1002         if (gspca_dev->streaming)
1003                 setgain(gspca_dev);
1004         return 0;
1005 }
1006
1007 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
1008 {
1009         struct sd *sd = (struct sd *) gspca_dev;
1010
1011         *val = sd->gain;
1012         return 0;
1013 }
1014
1015 /* control tables */
1016 static struct ctrl sd_ctrls_12a[] = {
1017         {
1018             {
1019                 .id = V4L2_CID_DO_WHITE_BALANCE,
1020                 .type = V4L2_CTRL_TYPE_INTEGER,
1021                 .name = "While Balance",
1022                 .minimum = WHITE_MIN,
1023                 .maximum = WHITE_MAX,
1024                 .step = 1,
1025                 .default_value = WHITE_DEF,
1026             },
1027             .set = sd_setwhite,
1028             .get = sd_getwhite,
1029         },
1030         {
1031             {
1032                 .id = V4L2_CID_EXPOSURE,
1033                 .type = V4L2_CTRL_TYPE_INTEGER,
1034                 .name = "Exposure",
1035                 .minimum = EXPOSURE_MIN,
1036                 .maximum = EXPOSURE_MAX,
1037                 .step = 1,
1038                 .default_value = EXPOSURE_DEF,
1039             },
1040             .set = sd_setexposure,
1041             .get = sd_getexposure,
1042         },
1043         {
1044             {
1045                 .id = V4L2_CID_AUTOGAIN,
1046                 .type = V4L2_CTRL_TYPE_BOOLEAN,
1047                 .name = "Auto Gain",
1048                 .minimum = AUTOGAIN_MIN,
1049                 .maximum = AUTOGAIN_MAX,
1050                 .step = 1,
1051                 .default_value = AUTOGAIN_DEF,
1052             },
1053             .set = sd_setautogain,
1054             .get = sd_getautogain,
1055         },
1056         {
1057             {
1058                 .id = V4L2_CID_GAIN,
1059                 .type = V4L2_CTRL_TYPE_INTEGER,
1060                 .name = "Gain",
1061                 .minimum = GAIN_MIN,
1062                 .maximum = GAIN_MAX,
1063                 .step = 1,
1064                 .default_value = GAIN_DEF,
1065             },
1066             .set = sd_setgain,
1067             .get = sd_getgain,
1068         },
1069 };
1070
1071 static struct ctrl sd_ctrls_72a[] = {
1072         {
1073            {
1074                 .id = V4L2_CID_BRIGHTNESS,
1075                 .type = V4L2_CTRL_TYPE_INTEGER,
1076                 .name = "Brightness",
1077                 .minimum = BRIGHTNESS_MIN,
1078                 .maximum = BRIGHTNESS_MAX,
1079                 .step = 1,
1080                 .default_value = BRIGHTNESS_DEF,
1081             },
1082             .set = sd_setbrightness,
1083             .get = sd_getbrightness,
1084         },
1085         {
1086             {
1087                 .id = V4L2_CID_CONTRAST,
1088                 .type = V4L2_CTRL_TYPE_INTEGER,
1089                 .name = "Contrast",
1090                 .minimum = CONTRAST_MIN,
1091                 .maximum = CONTRAST_MAX,
1092                 .step = 1,
1093                 .default_value = CONTRAST_DEF,
1094             },
1095             .set = sd_setcontrast,
1096             .get = sd_getcontrast,
1097         },
1098         {
1099             {
1100                 .id = V4L2_CID_AUTOGAIN,
1101                 .type = V4L2_CTRL_TYPE_BOOLEAN,
1102                 .name = "Auto Gain",
1103                 .minimum = AUTOGAIN_MIN,
1104                 .maximum = AUTOGAIN_MAX,
1105                 .step = 1,
1106                 .default_value = AUTOGAIN_DEF,
1107             },
1108             .set = sd_setautogain,
1109             .get = sd_getautogain,
1110         },
1111 };
1112
1113 /* sub-driver description */
1114 static const struct sd_desc sd_desc_12a = {
1115         .name = MODULE_NAME,
1116         .ctrls = sd_ctrls_12a,
1117         .nctrls = ARRAY_SIZE(sd_ctrls_12a),
1118         .config = sd_config,
1119         .init = sd_init_12a,
1120         .start = sd_start_12a,
1121         .stopN = sd_stopN,
1122         .stop0 = sd_stop0,
1123         .pkt_scan = sd_pkt_scan,
1124 /*      .dq_callback = do_autogain,      * fixme */
1125 };
1126 static const struct sd_desc sd_desc_72a = {
1127         .name = MODULE_NAME,
1128         .ctrls = sd_ctrls_72a,
1129         .nctrls = ARRAY_SIZE(sd_ctrls_72a),
1130         .config = sd_config,
1131         .init = sd_init_72a,
1132         .start = sd_start_72a,
1133         .stopN = sd_stopN,
1134         .stop0 = sd_stop0,
1135         .pkt_scan = sd_pkt_scan,
1136         .dq_callback = do_autogain,
1137 };
1138 static const struct sd_desc *sd_desc[2] = {
1139         &sd_desc_12a,
1140         &sd_desc_72a
1141 };
1142
1143 /* -- module initialisation -- */
1144 static const __devinitdata struct usb_device_id device_table[] = {
1145         {USB_DEVICE(0x041e, 0x401a), .driver_info = Rev072A},
1146         {USB_DEVICE(0x041e, 0x403b), .driver_info = Rev012A},
1147         {USB_DEVICE(0x0458, 0x7004), .driver_info = Rev072A},
1148         {USB_DEVICE(0x046d, 0x0928), .driver_info = Rev012A},
1149         {USB_DEVICE(0x046d, 0x0929), .driver_info = Rev012A},
1150         {USB_DEVICE(0x046d, 0x092a), .driver_info = Rev012A},
1151         {USB_DEVICE(0x046d, 0x092b), .driver_info = Rev012A},
1152         {USB_DEVICE(0x046d, 0x092c), .driver_info = Rev012A},
1153         {USB_DEVICE(0x046d, 0x092d), .driver_info = Rev012A},
1154         {USB_DEVICE(0x046d, 0x092e), .driver_info = Rev012A},
1155         {USB_DEVICE(0x046d, 0x092f), .driver_info = Rev012A},
1156         {USB_DEVICE(0x04fc, 0x0561), .driver_info = Rev072A},
1157         {USB_DEVICE(0x060b, 0xa001), .driver_info = Rev072A},
1158         {USB_DEVICE(0x10fd, 0x7e50), .driver_info = Rev072A},
1159         {USB_DEVICE(0xabcd, 0xcdee), .driver_info = Rev072A},
1160         {}
1161 };
1162
1163 MODULE_DEVICE_TABLE(usb, device_table);
1164
1165 /* -- device connect -- */
1166 static int sd_probe(struct usb_interface *intf,
1167                     const struct usb_device_id *id)
1168 {
1169         return gspca_dev_probe(intf, id,
1170                                 sd_desc[id->driver_info],
1171                                 sizeof(struct sd),
1172                                THIS_MODULE);
1173 }
1174
1175 static struct usb_driver sd_driver = {
1176         .name = MODULE_NAME,
1177         .id_table = device_table,
1178         .probe = sd_probe,
1179         .disconnect = gspca_disconnect,
1180 #ifdef CONFIG_PM
1181         .suspend = gspca_suspend,
1182         .resume = gspca_resume,
1183 #endif
1184 };
1185
1186 /* -- module insert / remove -- */
1187 static int __init sd_mod_init(void)
1188 {
1189         if (usb_register(&sd_driver) < 0)
1190                 return -1;
1191         PDEBUG(D_PROBE, "registered");
1192         return 0;
1193 }
1194 static void __exit sd_mod_exit(void)
1195 {
1196         usb_deregister(&sd_driver);
1197         PDEBUG(D_PROBE, "deregistered");
1198 }
1199
1200 module_init(sd_mod_init);
1201 module_exit(sd_mod_exit);