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[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / media / video / gspca / pac7311.c
blob052714484e83beecdcd398e7745d91ff37c97ca0
1 /*
2 * Pixart PAC7311 library
3 * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
4 *
5 * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 /* Some documentation about various registers as determined by trial and error.
23 When the register addresses differ between the 7202 and the 7311 the 2
24 different addresses are written as 7302addr/7311addr, when one of the 2
25 addresses is a - sign that register description is not valid for the
26 matching IC.
27
28 Register page 1:
29
30 Address Description
31 -/0x08 Unknown compressor related, must always be 8 except when not
32 in 640x480 resolution and page 4 reg 2 <= 3 then set it to 9 !
33 -/0x1b Auto white balance related, bit 0 is AWB enable (inverted)
34 bits 345 seem to toggle per color gains on/off (inverted)
35 0x78 Global control, bit 6 controls the LED (inverted)
36 -/0x80 JPEG compression ratio ? Best not touched
37
38 Register page 3/4:
39
40 Address Description
41 0x02 Clock divider 2-63, fps =~ 60 / val. Must be a multiple of 3 on
42 the 7302, so one of 3, 6, 9, ..., except when between 6 and 12?
43 -/0x0f Master gain 1-245, low value = high gain
44 0x10/- Master gain 0-31
45 -/0x10 Another gain 0-15, limited influence (1-2x gain I guess)
46 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused
47 -/0x27 Seems to toggle various gains on / off, Setting bit 7 seems to
48 completely disable the analog amplification block. Set to 0x68
49 for max gain, 0x14 for minimal gain.
50 */
51
52 #define MODULE_NAME "pac7311"
53
54 #include "gspca.h"
55
56 MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
57 MODULE_DESCRIPTION("Pixart PAC7311");
58 MODULE_LICENSE("GPL");
59
60 /* specific webcam descriptor */
61 struct sd {
62 struct gspca_dev gspca_dev; /* !! must be the first item */
63
64 unsigned char brightness;
65 unsigned char contrast;
66 unsigned char colors;
67 unsigned char gain;
68 unsigned char exposure;
69 unsigned char autogain;
70 __u8 hflip;
71 __u8 vflip;
72
73 __u8 sensor;
74 #define SENSOR_PAC7302 0
75 #define SENSOR_PAC7311 1
76
77 u8 sof_read;
78 u8 autogain_ignore_frames;
79
80 atomic_t avg_lum;
81 };
82
83 /* V4L2 controls supported by the driver */
84 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
85 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
86 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
87 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
88 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val);
89 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val);
90 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
91 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
92 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val);
93 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val);
94 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val);
95 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val);
96 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
97 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
98 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
99 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
100
101 static struct ctrl sd_ctrls[] = {
102 /* This control is pac7302 only */
103 #define BRIGHTNESS_IDX 0
104 {
105 {
106 .id = V4L2_CID_BRIGHTNESS,
107 .type = V4L2_CTRL_TYPE_INTEGER,
108 .name = "Brightness",
109 .minimum = 0,
110 #define BRIGHTNESS_MAX 0x20
111 .maximum = BRIGHTNESS_MAX,
112 .step = 1,
113 #define BRIGHTNESS_DEF 0x10
114 .default_value = BRIGHTNESS_DEF,
115 },
116 .set = sd_setbrightness,
117 .get = sd_getbrightness,
118 },
119 /* This control is for both the 7302 and the 7311 */
120 {
121 {
122 .id = V4L2_CID_CONTRAST,
123 .type = V4L2_CTRL_TYPE_INTEGER,
124 .name = "Contrast",
125 .minimum = 0,
126 #define CONTRAST_MAX 255
127 .maximum = CONTRAST_MAX,
128 .step = 1,
129 #define CONTRAST_DEF 127
130 .default_value = CONTRAST_DEF,
131 },
132 .set = sd_setcontrast,
133 .get = sd_getcontrast,
134 },
135 /* This control is pac7302 only */
136 #define SATURATION_IDX 2
137 {
138 {
139 .id = V4L2_CID_SATURATION,
140 .type = V4L2_CTRL_TYPE_INTEGER,
141 .name = "Saturation",
142 .minimum = 0,
143 #define COLOR_MAX 255
144 .maximum = COLOR_MAX,
145 .step = 1,
146 #define COLOR_DEF 127
147 .default_value = COLOR_DEF,
148 },
149 .set = sd_setcolors,
150 .get = sd_getcolors,
151 },
152 /* All controls below are for both the 7302 and the 7311 */
153 {
154 {
155 .id = V4L2_CID_GAIN,
156 .type = V4L2_CTRL_TYPE_INTEGER,
157 .name = "Gain",
158 .minimum = 0,
159 #define GAIN_MAX 255
160 .maximum = GAIN_MAX,
161 .step = 1,
162 #define GAIN_DEF 127
163 #define GAIN_KNEE 255 /* Gain seems to cause little noise on the pac73xx */
164 .default_value = GAIN_DEF,
165 },
166 .set = sd_setgain,
167 .get = sd_getgain,
168 },
169 {
170 {
171 .id = V4L2_CID_EXPOSURE,
172 .type = V4L2_CTRL_TYPE_INTEGER,
173 .name = "Exposure",
174 .minimum = 0,
175 #define EXPOSURE_MAX 255
176 .maximum = EXPOSURE_MAX,
177 .step = 1,
178 #define EXPOSURE_DEF 16 /* 32 ms / 30 fps */
179 #define EXPOSURE_KNEE 50 /* 100 ms / 10 fps */
180 .default_value = EXPOSURE_DEF,
181 },
182 .set = sd_setexposure,
183 .get = sd_getexposure,
184 },
185 {
186 {
187 .id = V4L2_CID_AUTOGAIN,
188 .type = V4L2_CTRL_TYPE_BOOLEAN,
189 .name = "Auto Gain",
190 .minimum = 0,
191 .maximum = 1,
192 .step = 1,
193 #define AUTOGAIN_DEF 1
194 .default_value = AUTOGAIN_DEF,
195 },
196 .set = sd_setautogain,
197 .get = sd_getautogain,
198 },
199 {
200 {
201 .id = V4L2_CID_HFLIP,
202 .type = V4L2_CTRL_TYPE_BOOLEAN,
203 .name = "Mirror",
204 .minimum = 0,
205 .maximum = 1,
206 .step = 1,
207 #define HFLIP_DEF 0
208 .default_value = HFLIP_DEF,
209 },
210 .set = sd_sethflip,
211 .get = sd_gethflip,
212 },
213 {
214 {
215 .id = V4L2_CID_VFLIP,
216 .type = V4L2_CTRL_TYPE_BOOLEAN,
217 .name = "Vflip",
218 .minimum = 0,
219 .maximum = 1,
220 .step = 1,
221 #define VFLIP_DEF 0
222 .default_value = VFLIP_DEF,
223 },
224 .set = sd_setvflip,
225 .get = sd_getvflip,
226 },
227 };
228
229 static const struct v4l2_pix_format vga_mode[] = {
230 {160, 120, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
231 .bytesperline = 160,
232 .sizeimage = 160 * 120 * 3 / 8 + 590,
233 .colorspace = V4L2_COLORSPACE_JPEG,
234 .priv = 2},
235 {320, 240, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
236 .bytesperline = 320,
237 .sizeimage = 320 * 240 * 3 / 8 + 590,
238 .colorspace = V4L2_COLORSPACE_JPEG,
239 .priv = 1},
240 {640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
241 .bytesperline = 640,
242 .sizeimage = 640 * 480 * 3 / 8 + 590,
243 .colorspace = V4L2_COLORSPACE_JPEG,
244 .priv = 0},
245 };
246
247 /* pac 7302 */
248 static const __u8 init_7302[] = {
249 /* index,value */
250 0xff, 0x01, /* page 1 */
251 0x78, 0x00, /* deactivate */
252 0xff, 0x01,
253 0x78, 0x40, /* led off */
254 };
255 static const __u8 start_7302[] = {
256 /* index, len, [value]* */
257 0xff, 1, 0x00, /* page 0 */
258 0x00, 12, 0x01, 0x40, 0x40, 0x40, 0x01, 0xe0, 0x02, 0x80,
259 0x00, 0x00, 0x00, 0x00,
260 0x0d, 24, 0x03, 0x01, 0x00, 0xb5, 0x07, 0xcb, 0x00, 0x00,
261 0x07, 0xc8, 0x00, 0xea, 0x07, 0xcf, 0x07, 0xf7,
262 0x07, 0x7e, 0x01, 0x0b, 0x00, 0x00, 0x00, 0x11,
263 0x26, 2, 0xaa, 0xaa,
264 0x2e, 1, 0x31,
265 0x38, 1, 0x01,
266 0x3a, 3, 0x14, 0xff, 0x5a,
267 0x43, 11, 0x00, 0x0a, 0x18, 0x11, 0x01, 0x2c, 0x88, 0x11,
268 0x00, 0x54, 0x11,
269 0x55, 1, 0x00,
270 0x62, 4, 0x10, 0x1e, 0x1e, 0x18,
271 0x6b, 1, 0x00,
272 0x6e, 3, 0x08, 0x06, 0x00,
273 0x72, 3, 0x00, 0xff, 0x00,
274 0x7d, 23, 0x01, 0x01, 0x58, 0x46, 0x50, 0x3c, 0x50, 0x3c,
275 0x54, 0x46, 0x54, 0x56, 0x52, 0x50, 0x52, 0x50,
276 0x56, 0x64, 0xa4, 0x00, 0xda, 0x00, 0x00,
277 0xa2, 10, 0x22, 0x2c, 0x3c, 0x54, 0x69, 0x7c, 0x9c, 0xb9,
278 0xd2, 0xeb,
279 0xaf, 1, 0x02,
280 0xb5, 2, 0x08, 0x08,
281 0xb8, 2, 0x08, 0x88,
282 0xc4, 4, 0xae, 0x01, 0x04, 0x01,
283 0xcc, 1, 0x00,
284 0xd1, 11, 0x01, 0x30, 0x49, 0x5e, 0x6f, 0x7f, 0x8e, 0xa9,
285 0xc1, 0xd7, 0xec,
286 0xdc, 1, 0x01,
287 0xff, 1, 0x01, /* page 1 */
288 0x12, 3, 0x02, 0x00, 0x01,
289 0x3e, 2, 0x00, 0x00,
290 0x76, 5, 0x01, 0x20, 0x40, 0x00, 0xf2,
291 0x7c, 1, 0x00,
292 0x7f, 10, 0x4b, 0x0f, 0x01, 0x2c, 0x02, 0x58, 0x03, 0x20,
293 0x02, 0x00,
294 0x96, 5, 0x01, 0x10, 0x04, 0x01, 0x04,
295 0xc8, 14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x00,
296 0x07, 0x00, 0x01, 0x07, 0x04, 0x01,
297 0xd8, 1, 0x01,
298 0xdb, 2, 0x00, 0x01,
299 0xde, 7, 0x00, 0x01, 0x04, 0x04, 0x00, 0x00, 0x00,
300 0xe6, 4, 0x00, 0x00, 0x00, 0x01,
301 0xeb, 1, 0x00,
302 0xff, 1, 0x02, /* page 2 */
303 0x22, 1, 0x00,
304 0xff, 1, 0x03, /* page 3 */
305 0x00, 255, /* load the page 3 */
306 0x11, 1, 0x01,
307 0xff, 1, 0x02, /* page 2 */
308 0x13, 1, 0x00,
309 0x22, 4, 0x1f, 0xa4, 0xf0, 0x96,
310 0x27, 2, 0x14, 0x0c,
311 0x2a, 5, 0xc8, 0x00, 0x18, 0x12, 0x22,
312 0x64, 8, 0x00, 0x00, 0xf0, 0x01, 0x14, 0x44, 0x44, 0x44,
313 0x6e, 1, 0x08,
314 0xff, 1, 0x01, /* page 1 */
315 0x78, 1, 0x00,
316 0, 0 /* end of sequence */
317 };
318
319 /* page 3 - the value 0xaa says skip the index - see reg_w_page() */
320 static const __u8 page3_7302[] = {
321 0x90, 0x40, 0x03, 0x50, 0xc2, 0x01, 0x14, 0x16,
322 0x14, 0x12, 0x00, 0x00, 0x00, 0x02, 0x33, 0x00,
323 0x0f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
324 0x00, 0x00, 0x00, 0x47, 0x01, 0xb3, 0x01, 0x00,
325 0x00, 0x08, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x21,
326 0x00, 0x00, 0x00, 0x54, 0xf4, 0x02, 0x52, 0x54,
327 0xa4, 0xb8, 0xe0, 0x2a, 0xf6, 0x00, 0x00, 0x00,
328 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
329 0x00, 0xfc, 0x00, 0xf2, 0x1f, 0x04, 0x00, 0x00,
330 0x00, 0x00, 0x00, 0xc0, 0xc0, 0x10, 0x00, 0x00,
331 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
332 0x00, 0x40, 0xff, 0x03, 0x19, 0x00, 0x00, 0x00,
333 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
334 0x00, 0x00, 0x00, 0x00, 0x00, 0xc8, 0xc8, 0xc8,
335 0xc8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50,
336 0x08, 0x10, 0x24, 0x40, 0x00, 0x00, 0x00, 0x00,
337 0x01, 0x00, 0x02, 0x47, 0x00, 0x00, 0x00, 0x00,
338 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
339 0x00, 0x02, 0xfa, 0x00, 0x64, 0x5a, 0x28, 0x00,
340 0x00
341 };
342
343 /* pac 7311 */
344 static const __u8 init_7311[] = {
345 0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
346 0x78, 0x40, /* Bit_0=start stream, Bit_6=LED */
347 0x78, 0x44, /* Bit_0=start stream, Bit_6=LED */
348 0xff, 0x04,
349 0x27, 0x80,
350 0x28, 0xca,
351 0x29, 0x53,
352 0x2a, 0x0e,
353 0xff, 0x01,
354 0x3e, 0x20,
355 };
356
357 static const __u8 start_7311[] = {
358 /* index, len, [value]* */
359 0xff, 1, 0x01, /* page 1 */
360 0x02, 43, 0x48, 0x0a, 0x40, 0x08, 0x00, 0x00, 0x08, 0x00,
361 0x06, 0xff, 0x11, 0xff, 0x5a, 0x30, 0x90, 0x4c,
362 0x00, 0x07, 0x00, 0x0a, 0x10, 0x00, 0xa0, 0x10,
363 0x02, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x01, 0x00,
364 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
365 0x00, 0x00, 0x00,
366 0x3e, 42, 0x00, 0x00, 0x78, 0x52, 0x4a, 0x52, 0x78, 0x6e,
367 0x48, 0x46, 0x48, 0x6e, 0x5f, 0x49, 0x42, 0x49,
368 0x5f, 0x5f, 0x49, 0x42, 0x49, 0x5f, 0x6e, 0x48,
369 0x46, 0x48, 0x6e, 0x78, 0x52, 0x4a, 0x52, 0x78,
370 0x00, 0x00, 0x09, 0x1b, 0x34, 0x49, 0x5c, 0x9b,
371 0xd0, 0xff,
372 0x78, 6, 0x44, 0x00, 0xf2, 0x01, 0x01, 0x80,
373 0x7f, 18, 0x2a, 0x1c, 0x00, 0xc8, 0x02, 0x58, 0x03, 0x84,
374 0x12, 0x00, 0x1a, 0x04, 0x08, 0x0c, 0x10, 0x14,
375 0x18, 0x20,
376 0x96, 3, 0x01, 0x08, 0x04,
377 0xa0, 4, 0x44, 0x44, 0x44, 0x04,
378 0xf0, 13, 0x01, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0x00,
379 0x3f, 0x00, 0x0a, 0x01, 0x00,
380 0xff, 1, 0x04, /* page 4 */
381 0x00, 254, /* load the page 4 */
382 0x11, 1, 0x01,
383 0, 0 /* end of sequence */
384 };
385
386 /* page 4 - the value 0xaa says skip the index - see reg_w_page() */
387 static const __u8 page4_7311[] = {
388 0xaa, 0xaa, 0x04, 0x54, 0x07, 0x2b, 0x09, 0x0f,
389 0x09, 0x00, 0xaa, 0xaa, 0x07, 0x00, 0x00, 0x62,
390 0x08, 0xaa, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
391 0x00, 0x00, 0x00, 0x03, 0xa0, 0x01, 0xf4, 0xaa,
392 0xaa, 0x00, 0x08, 0xaa, 0x03, 0xaa, 0x00, 0x68,
393 0xca, 0x10, 0x06, 0x78, 0x00, 0x00, 0x00, 0x00,
394 0x23, 0x28, 0x04, 0x11, 0x00, 0x00
395 };
396
397 static void reg_w_buf(struct gspca_dev *gspca_dev,
398 __u8 index,
399 const char *buffer, int len)
400 {
401 memcpy(gspca_dev->usb_buf, buffer, len);
402 usb_control_msg(gspca_dev->dev,
403 usb_sndctrlpipe(gspca_dev->dev, 0),
404 1, /* request */
405 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
406 0, /* value */
407 index, gspca_dev->usb_buf, len,
408 500);
409 }
410
411
412 static void reg_w(struct gspca_dev *gspca_dev,
413 __u8 index,
414 __u8 value)
415 {
416 gspca_dev->usb_buf[0] = value;
417 usb_control_msg(gspca_dev->dev,
418 usb_sndctrlpipe(gspca_dev->dev, 0),
419 0, /* request */
420 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
421 0, index, gspca_dev->usb_buf, 1,
422 500);
423 }
424
425 static void reg_w_seq(struct gspca_dev *gspca_dev,
426 const __u8 *seq, int len)
427 {
428 while (--len >= 0) {
429 reg_w(gspca_dev, seq[0], seq[1]);
430 seq += 2;
431 }
432 }
433
434 /* load the beginning of a page */
435 static void reg_w_page(struct gspca_dev *gspca_dev,
436 const __u8 *page, int len)
437 {
438 int index;
439
440 for (index = 0; index < len; index++) {
441 if (page[index] == 0xaa) /* skip this index */
442 continue;
443 gspca_dev->usb_buf[0] = page[index];
444 usb_control_msg(gspca_dev->dev,
445 usb_sndctrlpipe(gspca_dev->dev, 0),
446 0, /* request */
447 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
448 0, index, gspca_dev->usb_buf, 1,
449 500);
450 }
451 }
452
453 /* output a variable sequence */
454 static void reg_w_var(struct gspca_dev *gspca_dev,
455 const __u8 *seq)
456 {
457 int index, len;
458
459 for (;;) {
460 index = *seq++;
461 len = *seq++;
462 switch (len) {
463 case 0:
464 return;
465 case 254:
466 reg_w_page(gspca_dev, page4_7311, sizeof page4_7311);
467 break;
468 case 255:
469 reg_w_page(gspca_dev, page3_7302, sizeof page3_7302);
470 break;
471 default:
472 if (len > 64) {
473 PDEBUG(D_ERR|D_STREAM,
474 "Incorrect variable sequence");
475 return;
476 }
477 while (len > 0) {
478 if (len < 8) {
479 reg_w_buf(gspca_dev, index, seq, len);
480 seq += len;
481 break;
482 }
483 reg_w_buf(gspca_dev, index, seq, 8);
484 seq += 8;
485 index += 8;
486 len -= 8;
487 }
488 }
489 }
490 /* not reached */
491 }
492
493 /* this function is called at probe time */
494 static int sd_config(struct gspca_dev *gspca_dev,
495 const struct usb_device_id *id)
496 {
497 struct sd *sd = (struct sd *) gspca_dev;
498 struct cam *cam;
499
500 cam = &gspca_dev->cam;
501
502 sd->sensor = id->driver_info;
503 if (sd->sensor == SENSOR_PAC7302) {
504 PDEBUG(D_CONF, "Find Sensor PAC7302");
505 cam->cam_mode = &vga_mode[2]; /* only 640x480 */
506 cam->nmodes = 1;
507 } else {
508 PDEBUG(D_CONF, "Find Sensor PAC7311");
509 cam->cam_mode = vga_mode;
510 cam->nmodes = ARRAY_SIZE(vga_mode);
511 gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX)
512 | (1 << SATURATION_IDX);
513 }
514
515 sd->brightness = BRIGHTNESS_DEF;
516 sd->contrast = CONTRAST_DEF;
517 sd->colors = COLOR_DEF;
518 sd->gain = GAIN_DEF;
519 sd->exposure = EXPOSURE_DEF;
520 sd->autogain = AUTOGAIN_DEF;
521 sd->hflip = HFLIP_DEF;
522 sd->vflip = VFLIP_DEF;
523 return 0;
524 }
525
526 /* This function is used by pac7302 only */
527 static void setbrightcont(struct gspca_dev *gspca_dev)
528 {
529 struct sd *sd = (struct sd *) gspca_dev;
530 int i, v;
531 static const __u8 max[10] =
532 {0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
533 0xd4, 0xec};
534 static const __u8 delta[10] =
535 {0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
536 0x11, 0x0b};
537
538 reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
539 for (i = 0; i < 10; i++) {
540 v = max[i];
541 v += (sd->brightness - BRIGHTNESS_MAX)
542 * 150 / BRIGHTNESS_MAX; /* 200 ? */
543 v -= delta[i] * sd->contrast / CONTRAST_MAX;
544 if (v < 0)
545 v = 0;
546 else if (v > 0xff)
547 v = 0xff;
548 reg_w(gspca_dev, 0xa2 + i, v);
549 }
550 reg_w(gspca_dev, 0xdc, 0x01);
551 }
552
553 /* This function is used by pac7311 only */
554 static void setcontrast(struct gspca_dev *gspca_dev)
555 {
556 struct sd *sd = (struct sd *) gspca_dev;
557
558 reg_w(gspca_dev, 0xff, 0x04);
559 reg_w(gspca_dev, 0x10, sd->contrast >> 4);
560 /* load registers to sensor (Bit 0, auto clear) */
561 reg_w(gspca_dev, 0x11, 0x01);
562 }
563
564 /* This function is used by pac7302 only */
565 static void setcolors(struct gspca_dev *gspca_dev)
566 {
567 struct sd *sd = (struct sd *) gspca_dev;
568 int i, v;
569 static const int a[9] =
570 {217, -212, 0, -101, 170, -67, -38, -315, 355};
571 static const int b[9] =
572 {19, 106, 0, 19, 106, 1, 19, 106, 1};
573
574 reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
575 reg_w(gspca_dev, 0x11, 0x01);
576 reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
577 reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
578 for (i = 0; i < 9; i++) {
579 v = a[i] * sd->colors / COLOR_MAX + b[i];
580 reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
581 reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
582 }
583 reg_w(gspca_dev, 0xdc, 0x01);
584 PDEBUG(D_CONF|D_STREAM, "color: %i", sd->colors);
585 }
586
587 static void setgain(struct gspca_dev *gspca_dev)
588 {
589 struct sd *sd = (struct sd *) gspca_dev;
590
591 if (sd->sensor == SENSOR_PAC7302) {
592 reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
593 reg_w(gspca_dev, 0x10, sd->gain >> 3);
594 } else {
595 int gain = GAIN_MAX - sd->gain;
596 if (gain < 1)
597 gain = 1;
598 else if (gain > 245)
599 gain = 245;
600 reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
601 reg_w(gspca_dev, 0x0e, 0x00);
602 reg_w(gspca_dev, 0x0f, gain);
603 }
604 /* load registers to sensor (Bit 0, auto clear) */
605 reg_w(gspca_dev, 0x11, 0x01);
606 }
607
608 static void setexposure(struct gspca_dev *gspca_dev)
609 {
610 struct sd *sd = (struct sd *) gspca_dev;
611 __u8 reg;
612
613 /* register 2 of frame 3/4 contains the clock divider configuring the
614 no fps according to the formula: 60 / reg. sd->exposure is the
615 desired exposure time in ms. */
616 reg = 120 * sd->exposure / 1000;
617 if (reg < 2)
618 reg = 2;
619 else if (reg > 63)
620 reg = 63;
621
622 if (sd->sensor == SENSOR_PAC7302) {
623 /* On the pac7302 reg2 MUST be a multiple of 3, so round it to
624 the nearest multiple of 3, except when between 6 and 12? */
625 if (reg < 6 || reg > 12)
626 reg = ((reg + 1) / 3) * 3;
627 reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
628 reg_w(gspca_dev, 0x02, reg);
629 } else {
630 reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
631 reg_w(gspca_dev, 0x02, reg);
632 /* Page 1 register 8 must always be 0x08 except when not in
633 640x480 mode and Page3/4 reg 2 <= 3 then it must be 9 */
634 reg_w(gspca_dev, 0xff, 0x01);
635 if (gspca_dev->cam.cam_mode[(int)gspca_dev->curr_mode].priv &&
636 reg <= 3)
637 reg_w(gspca_dev, 0x08, 0x09);
638 else
639 reg_w(gspca_dev, 0x08, 0x08);
640 }
641 /* load registers to sensor (Bit 0, auto clear) */
642 reg_w(gspca_dev, 0x11, 0x01);
643 }
644
645 static void sethvflip(struct gspca_dev *gspca_dev)
646 {
647 struct sd *sd = (struct sd *) gspca_dev;
648 __u8 data;
649
650 if (sd->sensor == SENSOR_PAC7302) {
651 reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
652 data = (sd->hflip ? 0x08 : 0x00)
653 | (sd->vflip ? 0x04 : 0x00);
654 } else {
655 reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
656 data = (sd->hflip ? 0x04 : 0x00)
657 | (sd->vflip ? 0x08 : 0x00);
658 }
659 reg_w(gspca_dev, 0x21, data);
660 /* load registers to sensor (Bit 0, auto clear) */
661 reg_w(gspca_dev, 0x11, 0x01);
662 }
663
664 /* this function is called at probe and resume time */
665 static int sd_init(struct gspca_dev *gspca_dev)
666 {
667 struct sd *sd = (struct sd *) gspca_dev;
668
669 if (sd->sensor == SENSOR_PAC7302)
670 reg_w_seq(gspca_dev, init_7302, sizeof init_7302);
671 else
672 reg_w_seq(gspca_dev, init_7311, sizeof init_7311);
673
674 return 0;
675 }
676
677 static int sd_start(struct gspca_dev *gspca_dev)
678 {
679 struct sd *sd = (struct sd *) gspca_dev;
680
681 sd->sof_read = 0;
682
683 if (sd->sensor == SENSOR_PAC7302) {
684 reg_w_var(gspca_dev, start_7302);
685 setbrightcont(gspca_dev);
686 setcolors(gspca_dev);
687 } else {
688 reg_w_var(gspca_dev, start_7311);
689 setcontrast(gspca_dev);
690 }
691 setgain(gspca_dev);
692 setexposure(gspca_dev);
693 sethvflip(gspca_dev);
694
695 /* set correct resolution */
696 switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
697 case 2: /* 160x120 pac7311 */
698 reg_w(gspca_dev, 0xff, 0x01);
699 reg_w(gspca_dev, 0x17, 0x20);
700 reg_w(gspca_dev, 0x87, 0x10);
701 break;
702 case 1: /* 320x240 pac7311 */
703 reg_w(gspca_dev, 0xff, 0x01);
704 reg_w(gspca_dev, 0x17, 0x30);
705 reg_w(gspca_dev, 0x87, 0x11);
706 break;
707 case 0: /* 640x480 */
708 if (sd->sensor == SENSOR_PAC7302)
709 break;
710 reg_w(gspca_dev, 0xff, 0x01);
711 reg_w(gspca_dev, 0x17, 0x00);
712 reg_w(gspca_dev, 0x87, 0x12);
713 break;
714 }
715
716 sd->sof_read = 0;
717 sd->autogain_ignore_frames = 0;
718 atomic_set(&sd->avg_lum, -1);
719
720 /* start stream */
721 reg_w(gspca_dev, 0xff, 0x01);
722 if (sd->sensor == SENSOR_PAC7302)
723 reg_w(gspca_dev, 0x78, 0x01);
724 else
725 reg_w(gspca_dev, 0x78, 0x05);
726 return 0;
727 }
728
729 static void sd_stopN(struct gspca_dev *gspca_dev)
730 {
731 struct sd *sd = (struct sd *) gspca_dev;
732
733 if (sd->sensor == SENSOR_PAC7302) {
734 reg_w(gspca_dev, 0xff, 0x01);
735 reg_w(gspca_dev, 0x78, 0x00);
736 reg_w(gspca_dev, 0x78, 0x00);
737 return;
738 }
739 reg_w(gspca_dev, 0xff, 0x04);
740 reg_w(gspca_dev, 0x27, 0x80);
741 reg_w(gspca_dev, 0x28, 0xca);
742 reg_w(gspca_dev, 0x29, 0x53);
743 reg_w(gspca_dev, 0x2a, 0x0e);
744 reg_w(gspca_dev, 0xff, 0x01);
745 reg_w(gspca_dev, 0x3e, 0x20);
746 reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
747 reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
748 reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
749 }
750
751 /* called on streamoff with alt 0 and on disconnect */
752 static void sd_stop0(struct gspca_dev *gspca_dev)
753 {
754 struct sd *sd = (struct sd *) gspca_dev;
755
756 if (!gspca_dev->present)
757 return;
758 if (sd->sensor == SENSOR_PAC7302) {
759 reg_w(gspca_dev, 0xff, 0x01);
760 reg_w(gspca_dev, 0x78, 0x40);
761 }
762 }
763
764 /* Include pac common sof detection functions */
765 #include "pac_common.h"
766
767 static void do_autogain(struct gspca_dev *gspca_dev)
768 {
769 struct sd *sd = (struct sd *) gspca_dev;
770 int avg_lum = atomic_read(&sd->avg_lum);
771 int desired_lum, deadzone;
772
773 if (avg_lum == -1)
774 return;
775
776 if (sd->sensor == SENSOR_PAC7302) {
777 desired_lum = 270 + sd->brightness * 4;
778 /* Hack hack, with the 7202 the first exposure step is
779 pretty large, so if we're about to make the first
780 exposure increase make the deadzone large to avoid
781 oscilating */
782 if (desired_lum > avg_lum && sd->gain == GAIN_DEF &&
783 sd->exposure > EXPOSURE_DEF &&
784 sd->exposure < 42)
785 deadzone = 90;
786 else
787 deadzone = 30;
788 } else {
789 desired_lum = 200;
790 deadzone = 20;
791 }
792
793 if (sd->autogain_ignore_frames > 0)
794 sd->autogain_ignore_frames--;
795 else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
796 deadzone, GAIN_KNEE, EXPOSURE_KNEE))
797 sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
798 }
799
800 static const unsigned char pac7311_jpeg_header1[] = {
801 0xff, 0xd8, 0xff, 0xc0, 0x00, 0x11, 0x08
802 };
803
804 static const unsigned char pac7311_jpeg_header2[] = {
805 0x03, 0x01, 0x21, 0x00, 0x02, 0x11, 0x01, 0x03, 0x11, 0x01, 0xff, 0xda,
806 0x00, 0x0c, 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
807 };
808
809 /* this function is run at interrupt level */
810 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
811 struct gspca_frame *frame, /* target */
812 __u8 *data, /* isoc packet */
813 int len) /* iso packet length */
814 {
815 struct sd *sd = (struct sd *) gspca_dev;
816 unsigned char *sof;
817
818 sof = pac_find_sof(gspca_dev, data, len);
819 if (sof) {
820 unsigned char tmpbuf[4];
821 int n, lum_offset, footer_length;
822
823 if (sd->sensor == SENSOR_PAC7302) {
824 /* 6 bytes after the FF D9 EOF marker a number of lumination
825 bytes are send corresponding to different parts of the
826 image, the 14th and 15th byte after the EOF seem to
827 correspond to the center of the image */
828 lum_offset = 61 + sizeof pac_sof_marker;
829 footer_length = 74;
830 } else {
831 lum_offset = 24 + sizeof pac_sof_marker;
832 footer_length = 26;
833 }
834
835 /* Finish decoding current frame */
836 n = (sof - data) - (footer_length + sizeof pac_sof_marker);
837 if (n < 0) {
838 frame->data_end += n;
839 n = 0;
840 }
841 frame = gspca_frame_add(gspca_dev, INTER_PACKET, frame,
842 data, n);
843 if (gspca_dev->last_packet_type != DISCARD_PACKET &&
844 frame->data_end[-2] == 0xff &&
845 frame->data_end[-1] == 0xd9)
846 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
847 NULL, 0);
848
849 n = sof - data;
850 len -= n;
851 data = sof;
852
853 /* Get average lumination */
854 if (gspca_dev->last_packet_type == LAST_PACKET &&
855 n >= lum_offset)
856 atomic_set(&sd->avg_lum, data[-lum_offset] +
857 data[-lum_offset + 1]);
858 else
859 atomic_set(&sd->avg_lum, -1);
860
861 /* Start the new frame with the jpeg header */
862 gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
863 pac7311_jpeg_header1, sizeof(pac7311_jpeg_header1));
864 if (sd->sensor == SENSOR_PAC7302) {
865 /* The PAC7302 has the image rotated 90 degrees */
866 tmpbuf[0] = gspca_dev->width >> 8;
867 tmpbuf[1] = gspca_dev->width & 0xff;
868 tmpbuf[2] = gspca_dev->height >> 8;
869 tmpbuf[3] = gspca_dev->height & 0xff;
870 } else {
871 tmpbuf[0] = gspca_dev->height >> 8;
872 tmpbuf[1] = gspca_dev->height & 0xff;
873 tmpbuf[2] = gspca_dev->width >> 8;
874 tmpbuf[3] = gspca_dev->width & 0xff;
875 }
876 gspca_frame_add(gspca_dev, INTER_PACKET, frame, tmpbuf, 4);
877 gspca_frame_add(gspca_dev, INTER_PACKET, frame,
878 pac7311_jpeg_header2, sizeof(pac7311_jpeg_header2));
879 }
880 gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
881 }
882
883 static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
884 {
885 struct sd *sd = (struct sd *) gspca_dev;
886
887 sd->brightness = val;
888 if (gspca_dev->streaming)
889 setbrightcont(gspca_dev);
890 return 0;
891 }
892
893 static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
894 {
895 struct sd *sd = (struct sd *) gspca_dev;
896
897 *val = sd->brightness;
898 return 0;
899 }
900
901 static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
902 {
903 struct sd *sd = (struct sd *) gspca_dev;
904
905 sd->contrast = val;
906 if (gspca_dev->streaming) {
907 if (sd->sensor == SENSOR_PAC7302)
908 setbrightcont(gspca_dev);
909 else
910 setcontrast(gspca_dev);
911 }
912 return 0;
913 }
914
915 static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
916 {
917 struct sd *sd = (struct sd *) gspca_dev;
918
919 *val = sd->contrast;
920 return 0;
921 }
922
923 static int sd_setcolors(struct gspca_dev *gspca_dev, __s32 val)
924 {
925 struct sd *sd = (struct sd *) gspca_dev;
926
927 sd->colors = val;
928 if (gspca_dev->streaming)
929 setcolors(gspca_dev);
930 return 0;
931 }
932
933 static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
934 {
935 struct sd *sd = (struct sd *) gspca_dev;
936
937 *val = sd->colors;
938 return 0;
939 }
940
941 static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
942 {
943 struct sd *sd = (struct sd *) gspca_dev;
944
945 sd->gain = val;
946 if (gspca_dev->streaming)
947 setgain(gspca_dev);
948 return 0;
949 }
950
951 static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
952 {
953 struct sd *sd = (struct sd *) gspca_dev;
954
955 *val = sd->gain;
956 return 0;
957 }
958
959 static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
960 {
961 struct sd *sd = (struct sd *) gspca_dev;
962
963 sd->exposure = val;
964 if (gspca_dev->streaming)
965 setexposure(gspca_dev);
966 return 0;
967 }
968
969 static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
970 {
971 struct sd *sd = (struct sd *) gspca_dev;
972
973 *val = sd->exposure;
974 return 0;
975 }
976
977 static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
978 {
979 struct sd *sd = (struct sd *) gspca_dev;
980
981 sd->autogain = val;
982 /* when switching to autogain set defaults to make sure
983 we are on a valid point of the autogain gain /
984 exposure knee graph, and give this change time to
985 take effect before doing autogain. */
986 if (sd->autogain) {
987 sd->exposure = EXPOSURE_DEF;
988 sd->gain = GAIN_DEF;
989 if (gspca_dev->streaming) {
990 sd->autogain_ignore_frames =
991 PAC_AUTOGAIN_IGNORE_FRAMES;
992 setexposure(gspca_dev);
993 setgain(gspca_dev);
994 }
995 }
996
997 return 0;
998 }
999
1000 static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
1001 {
1002 struct sd *sd = (struct sd *) gspca_dev;
1003
1004 *val = sd->autogain;
1005 return 0;
1006 }
1007
1008 static int sd_sethflip(struct gspca_dev *gspca_dev, __s32 val)
1009 {
1010 struct sd *sd = (struct sd *) gspca_dev;
1011
1012 sd->hflip = val;
1013 if (gspca_dev->streaming)
1014 sethvflip(gspca_dev);
1015 return 0;
1016 }
1017
1018 static int sd_gethflip(struct gspca_dev *gspca_dev, __s32 *val)
1019 {
1020 struct sd *sd = (struct sd *) gspca_dev;
1021
1022 *val = sd->hflip;
1023 return 0;
1024 }
1025
1026 static int sd_setvflip(struct gspca_dev *gspca_dev, __s32 val)
1027 {
1028 struct sd *sd = (struct sd *) gspca_dev;
1029
1030 sd->vflip = val;
1031 if (gspca_dev->streaming)
1032 sethvflip(gspca_dev);
1033 return 0;
1034 }
1035
1036 static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
1037 {
1038 struct sd *sd = (struct sd *) gspca_dev;
1039
1040 *val = sd->vflip;
1041 return 0;
1042 }
1043
1044 /* sub-driver description */
1045 static struct sd_desc sd_desc = {
1046 .name = MODULE_NAME,
1047 .ctrls = sd_ctrls,
1048 .nctrls = ARRAY_SIZE(sd_ctrls),
1049 .config = sd_config,
1050 .init = sd_init,
1051 .start = sd_start,
1052 .stopN = sd_stopN,
1053 .stop0 = sd_stop0,
1054 .pkt_scan = sd_pkt_scan,
1055 .dq_callback = do_autogain,
1056 };
1057
1058 /* -- module initialisation -- */
1059 static __devinitdata struct usb_device_id device_table[] = {
1060 {USB_DEVICE(0x06f8, 0x3009), .driver_info = SENSOR_PAC7302},
1061 {USB_DEVICE(0x093a, 0x2600), .driver_info = SENSOR_PAC7311},
1062 {USB_DEVICE(0x093a, 0x2601), .driver_info = SENSOR_PAC7311},
1063 {USB_DEVICE(0x093a, 0x2603), .driver_info = SENSOR_PAC7311},
1064 {USB_DEVICE(0x093a, 0x2608), .driver_info = SENSOR_PAC7311},
1065 {USB_DEVICE(0x093a, 0x260e), .driver_info = SENSOR_PAC7311},
1066 {USB_DEVICE(0x093a, 0x260f), .driver_info = SENSOR_PAC7311},
1067 {USB_DEVICE(0x093a, 0x2620), .driver_info = SENSOR_PAC7302},
1068 {USB_DEVICE(0x093a, 0x2621), .driver_info = SENSOR_PAC7302},
1069 {USB_DEVICE(0x093a, 0x2622), .driver_info = SENSOR_PAC7302},
1070 {USB_DEVICE(0x093a, 0x2624), .driver_info = SENSOR_PAC7302},
1071 {USB_DEVICE(0x093a, 0x2626), .driver_info = SENSOR_PAC7302},
1072 {USB_DEVICE(0x093a, 0x2629), .driver_info = SENSOR_PAC7302},
1073 {USB_DEVICE(0x093a, 0x262a), .driver_info = SENSOR_PAC7302},
1074 {USB_DEVICE(0x093a, 0x262c), .driver_info = SENSOR_PAC7302},
1075 {}
1076 };
1077 MODULE_DEVICE_TABLE(usb, device_table);
1078
1079 /* -- device connect -- */
1080 static int sd_probe(struct usb_interface *intf,
1081 const struct usb_device_id *id)
1082 {
1083 return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
1084 THIS_MODULE);
1085 }
1086
1087 static struct usb_driver sd_driver = {
1088 .name = MODULE_NAME,
1089 .id_table = device_table,
1090 .probe = sd_probe,
1091 .disconnect = gspca_disconnect,
1092 #ifdef CONFIG_PM
1093 .suspend = gspca_suspend,
1094 .resume = gspca_resume,
1095 #endif
1096 };
1097
1098 /* -- module insert / remove -- */
1099 static int __init sd_mod_init(void)
1100 {
1101 int ret;
1102 ret = usb_register(&sd_driver);
1103 if (ret < 0)
1104 return ret;
1105 PDEBUG(D_PROBE, "registered");
1106 return 0;
1107 }
1108 static void __exit sd_mod_exit(void)
1109 {
1110 usb_deregister(&sd_driver);
1111 PDEBUG(D_PROBE, "deregistered");
1112 }
1113
1114 module_init(sd_mod_init);
1115 module_exit(sd_mod_exit);
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