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e2997a72 HG |
1 | /* |
2 | * Pixart PAC207BCA library | |
3 | * | |
4 | * Copyright (C) 2008 Hans de Goede <j.w.r.degoede@hhs.nl> | |
5 | * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li | |
6 | * Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr | |
7 | * | |
8 | * V4L2 by Jean-Francois Moine <http://moinejf.free.fr> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #define MODULE_NAME "pac207" | |
27 | ||
28 | #include "gspca.h" | |
29 | ||
a5ae2062 JFM |
30 | #define DRIVER_VERSION_NUMBER KERNEL_VERSION(2, 1, 4) |
31 | static const char version[] = "2.1.4"; | |
e2997a72 HG |
32 | |
33 | MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>"); | |
34 | MODULE_DESCRIPTION("Pixart PAC207"); | |
35 | MODULE_LICENSE("GPL"); | |
36 | ||
37 | #define PAC207_CTRL_TIMEOUT 100 /* ms */ | |
38 | ||
39 | #define PAC207_BRIGHTNESS_MIN 0 | |
40 | #define PAC207_BRIGHTNESS_MAX 255 | |
41 | #define PAC207_BRIGHTNESS_DEFAULT 4 /* power on default: 4 */ | |
42 | ||
46ccdafa HG |
43 | /* An exposure value of 4 also works (3 does not) but then we need to lower |
44 | the compression balance setting when in 352x288 mode, otherwise the usb | |
45 | bandwidth is not enough and packets get dropped resulting in corrupt | |
46 | frames. The problem with this is that when the compression balance gets | |
47 | lowered below 0x80, the pac207 starts using a different compression | |
48 | algorithm for some lines, these lines get prefixed with a 0x2dd2 prefix | |
49 | and currently we do not know how to decompress these lines, so for now | |
50 | we use a minimum exposure value of 5 */ | |
51 | #define PAC207_EXPOSURE_MIN 5 | |
e2997a72 | 52 | #define PAC207_EXPOSURE_MAX 26 |
46ccdafa | 53 | #define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 ?? */ |
e2997a72 HG |
54 | #define PAC207_EXPOSURE_KNEE 11 /* 4 = 30 fps, 11 = 8, 15 = 6 */ |
55 | ||
56 | #define PAC207_GAIN_MIN 0 | |
57 | #define PAC207_GAIN_MAX 31 | |
58 | #define PAC207_GAIN_DEFAULT 9 /* power on default: 9 */ | |
59 | #define PAC207_GAIN_KNEE 20 | |
60 | ||
61 | #define PAC207_AUTOGAIN_DEADZONE 30 | |
62 | /* We calculating the autogain at the end of the transfer of a frame, at this | |
63 | moment a frame with the old settings is being transmitted, and a frame is | |
64 | being captured with the old settings. So if we adjust the autogain we must | |
65 | ignore atleast the 2 next frames for the new settings to come into effect | |
66 | before doing any other adjustments */ | |
67 | #define PAC207_AUTOGAIN_IGNORE_FRAMES 3 | |
68 | ||
e2997a72 HG |
69 | /* specific webcam descriptor */ |
70 | struct sd { | |
71 | struct gspca_dev gspca_dev; /* !! must be the first item */ | |
72 | ||
e2997a72 HG |
73 | u8 mode; |
74 | ||
75 | u8 brightness; | |
76 | u8 exposure; | |
77 | u8 autogain; | |
78 | u8 gain; | |
79 | ||
80 | u8 sof_read; | |
ab8f12cf | 81 | u8 header_read; |
e2997a72 HG |
82 | u8 autogain_ignore_frames; |
83 | ||
84 | atomic_t avg_lum; | |
85 | }; | |
86 | ||
87 | /* V4L2 controls supported by the driver */ | |
88 | static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val); | |
89 | static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val); | |
90 | static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val); | |
91 | static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val); | |
92 | static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val); | |
93 | static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val); | |
94 | static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val); | |
95 | static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val); | |
96 | ||
97 | static struct ctrl sd_ctrls[] = { | |
98 | #define SD_BRIGHTNESS 0 | |
99 | { | |
100 | { | |
101 | .id = V4L2_CID_BRIGHTNESS, | |
102 | .type = V4L2_CTRL_TYPE_INTEGER, | |
103 | .name = "Brightness", | |
104 | .minimum = PAC207_BRIGHTNESS_MIN, | |
105 | .maximum = PAC207_BRIGHTNESS_MAX, | |
106 | .step = 1, | |
107 | .default_value = PAC207_BRIGHTNESS_DEFAULT, | |
108 | .flags = 0, | |
109 | }, | |
110 | .set = sd_setbrightness, | |
111 | .get = sd_getbrightness, | |
112 | }, | |
113 | #define SD_EXPOSURE 1 | |
114 | { | |
115 | { | |
116 | .id = V4L2_CID_EXPOSURE, | |
117 | .type = V4L2_CTRL_TYPE_INTEGER, | |
118 | .name = "exposure", | |
119 | .minimum = PAC207_EXPOSURE_MIN, | |
120 | .maximum = PAC207_EXPOSURE_MAX, | |
121 | .step = 1, | |
122 | .default_value = PAC207_EXPOSURE_DEFAULT, | |
123 | .flags = 0, | |
124 | }, | |
125 | .set = sd_setexposure, | |
126 | .get = sd_getexposure, | |
127 | }, | |
128 | #define SD_AUTOGAIN 2 | |
129 | { | |
130 | { | |
131 | .id = V4L2_CID_AUTOGAIN, | |
132 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
133 | .name = "Auto Gain", | |
134 | .minimum = 0, | |
135 | .maximum = 1, | |
136 | .step = 1, | |
137 | .default_value = 1, | |
138 | .flags = 0, | |
139 | }, | |
140 | .set = sd_setautogain, | |
141 | .get = sd_getautogain, | |
142 | }, | |
143 | #define SD_GAIN 3 | |
144 | { | |
145 | { | |
146 | .id = V4L2_CID_GAIN, | |
147 | .type = V4L2_CTRL_TYPE_INTEGER, | |
148 | .name = "gain", | |
149 | .minimum = PAC207_GAIN_MIN, | |
150 | .maximum = PAC207_GAIN_MAX, | |
151 | .step = 1, | |
152 | .default_value = PAC207_GAIN_DEFAULT, | |
153 | .flags = 0, | |
154 | }, | |
155 | .set = sd_setgain, | |
156 | .get = sd_getgain, | |
157 | }, | |
158 | }; | |
159 | ||
160 | static struct cam_mode sif_mode[] = { | |
ab8f12cf HG |
161 | {V4L2_PIX_FMT_PAC207, 176, 144, 1}, |
162 | {V4L2_PIX_FMT_PAC207, 352, 288, 0}, | |
e2997a72 HG |
163 | }; |
164 | ||
165 | static const __u8 pac207_sensor_init[][8] = { | |
166 | {0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0xf0}, | |
167 | {0x00, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30}, | |
168 | {0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00}, | |
169 | {0x00, 0x00, 0x32, 0x00, 0x96, 0x00, 0xa2, 0x02}, | |
170 | {0x32, 0x00, 0x96, 0x00, 0xA2, 0x02, 0xaf, 0x00}, | |
171 | }; | |
172 | ||
173 | /* 48 reg_72 Rate Control end BalSize_4a =0x36 */ | |
174 | static const __u8 PacReg72[] = { 0x00, 0x00, 0x36, 0x00 }; | |
175 | ||
d43fa32f JFM |
176 | static const unsigned char pac207_sof_marker[5] = |
177 | { 0xff, 0xff, 0x00, 0xff, 0x96 }; | |
e2997a72 HG |
178 | |
179 | int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index, | |
180 | const u8 *buffer, u16 length) | |
181 | { | |
182 | struct usb_device *udev = gspca_dev->dev; | |
183 | int err; | |
184 | u8 kbuf[8]; | |
185 | ||
186 | memcpy(kbuf, buffer, length); | |
187 | ||
188 | err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01, | |
189 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, | |
190 | 0x00, index, kbuf, length, PAC207_CTRL_TIMEOUT); | |
191 | if (err < 0) | |
192 | PDEBUG(D_ERR, | |
193 | "Failed to write registers to index 0x%04X, error %d)", | |
194 | index, err); | |
195 | ||
196 | return err; | |
197 | } | |
198 | ||
199 | ||
200 | int pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value) | |
201 | { | |
202 | struct usb_device *udev = gspca_dev->dev; | |
203 | int err; | |
204 | ||
205 | err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00, | |
206 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, | |
207 | value, index, NULL, 0, PAC207_CTRL_TIMEOUT); | |
208 | if (err) | |
209 | PDEBUG(D_ERR, "Failed to write a register (index 0x%04X," | |
210 | " value 0x%02X, error %d)", index, value, err); | |
211 | ||
212 | return err; | |
213 | } | |
214 | ||
215 | ||
216 | int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index) | |
217 | { | |
218 | struct usb_device *udev = gspca_dev->dev; | |
219 | u8 buff; | |
220 | int res; | |
221 | ||
222 | res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00, | |
223 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE, | |
224 | 0x00, index, &buff, 1, PAC207_CTRL_TIMEOUT); | |
225 | if (res < 0) { | |
226 | PDEBUG(D_ERR, | |
227 | "Failed to read a register (index 0x%04X, error %d)", | |
228 | index, res); | |
229 | return res; | |
230 | } | |
231 | ||
232 | return buff; | |
233 | } | |
234 | ||
235 | ||
236 | /* this function is called at probe time */ | |
237 | static int sd_config(struct gspca_dev *gspca_dev, | |
238 | const struct usb_device_id *id) | |
239 | { | |
4aa0d037 | 240 | struct sd *sd = (struct sd *) gspca_dev; |
e2997a72 HG |
241 | struct cam *cam; |
242 | u8 idreg[2]; | |
243 | ||
244 | idreg[0] = pac207_read_reg(gspca_dev, 0x0000); | |
245 | idreg[1] = pac207_read_reg(gspca_dev, 0x0001); | |
246 | idreg[0] = ((idreg[0] & 0x0F) << 4) | ((idreg[1] & 0xf0) >> 4); | |
247 | idreg[1] = idreg[1] & 0x0f; | |
248 | PDEBUG(D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X", | |
249 | idreg[0], idreg[1]); | |
250 | ||
251 | if (idreg[0] != 0x27) { | |
252 | PDEBUG(D_PROBE, "Error invalid sensor ID!"); | |
253 | return -ENODEV; | |
254 | } | |
255 | ||
256 | pac207_write_reg(gspca_dev, 0x41, 0x00); | |
257 | /* Bit_0=Image Format, | |
258 | * Bit_1=LED, | |
259 | * Bit_2=Compression test mode enable */ | |
260 | pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ | |
261 | pac207_write_reg(gspca_dev, 0x11, 0x30); /* Analog Bias */ | |
262 | ||
263 | PDEBUG(D_PROBE, | |
264 | "Pixart PAC207BCA Image Processor and Control Chip detected" | |
265 | " (vid/pid 0x%04X:0x%04X)", id->idVendor, id->idProduct); | |
266 | ||
267 | cam = &gspca_dev->cam; | |
268 | cam->dev_name = (char *) id->driver_info; | |
269 | cam->epaddr = 0x05; | |
270 | cam->cam_mode = sif_mode; | |
271 | cam->nmodes = ARRAY_SIZE(sif_mode); | |
4aa0d037 JFM |
272 | sd->brightness = PAC207_BRIGHTNESS_DEFAULT; |
273 | sd->exposure = PAC207_EXPOSURE_DEFAULT; | |
274 | sd->gain = PAC207_GAIN_DEFAULT; | |
e2997a72 HG |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
279 | /* this function is called at open time */ | |
280 | static int sd_open(struct gspca_dev *gspca_dev) | |
281 | { | |
282 | struct sd *sd = (struct sd *) gspca_dev; | |
283 | ||
e2997a72 | 284 | sd->autogain = 1; |
e2997a72 HG |
285 | return 0; |
286 | } | |
287 | ||
288 | /* -- start the camera -- */ | |
289 | static void sd_start(struct gspca_dev *gspca_dev) | |
290 | { | |
291 | struct sd *sd = (struct sd *) gspca_dev; | |
292 | __u8 mode; | |
293 | ||
294 | pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */ | |
295 | pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8); | |
296 | pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8); | |
297 | pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8); | |
298 | pac207_write_regs(gspca_dev, 0x0040, pac207_sensor_init[3], 8); | |
299 | pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[4], 8); | |
300 | pac207_write_regs(gspca_dev, 0x0048, PacReg72, 4); | |
301 | ||
302 | /* Compression Balance */ | |
303 | if (gspca_dev->width == 176) | |
304 | pac207_write_reg(gspca_dev, 0x4a, 0xff); | |
305 | else | |
306 | pac207_write_reg(gspca_dev, 0x4a, 0x88); | |
307 | pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */ | |
308 | pac207_write_reg(gspca_dev, 0x08, sd->brightness); | |
309 | ||
310 | /* PGA global gain (Bit 4-0) */ | |
311 | pac207_write_reg(gspca_dev, 0x0e, sd->gain); | |
312 | pac207_write_reg(gspca_dev, 0x02, sd->exposure); /* PXCK = 12MHz /n */ | |
313 | ||
314 | mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */ | |
d43fa32f | 315 | if (gspca_dev->width == 176) { /* 176x144 */ |
e2997a72 HG |
316 | mode |= 0x01; |
317 | PDEBUG(D_STREAM, "pac207_start mode 176x144"); | |
d43fa32f | 318 | } else { /* 352x288 */ |
e2997a72 | 319 | PDEBUG(D_STREAM, "pac207_start mode 352x288"); |
d43fa32f | 320 | } |
e2997a72 HG |
321 | pac207_write_reg(gspca_dev, 0x41, mode); |
322 | ||
323 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ | |
324 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ | |
6a7eba24 | 325 | msleep(10); |
e2997a72 HG |
326 | pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */ |
327 | ||
328 | sd->sof_read = 0; | |
329 | sd->autogain_ignore_frames = 0; | |
330 | atomic_set(&sd->avg_lum, -1); | |
331 | } | |
332 | ||
333 | static void sd_stopN(struct gspca_dev *gspca_dev) | |
334 | { | |
335 | pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */ | |
336 | pac207_write_reg(gspca_dev, 0x41, 0x00); /* Turn of LED */ | |
337 | pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */ | |
338 | } | |
339 | ||
340 | static void sd_stop0(struct gspca_dev *gspca_dev) | |
341 | { | |
342 | } | |
343 | ||
344 | /* this function is called at close time */ | |
345 | static void sd_close(struct gspca_dev *gspca_dev) | |
346 | { | |
347 | } | |
348 | ||
ab8f12cf | 349 | static int sd_get_buff_size_op(struct gspca_dev *gspca_dev, int mode) |
e2997a72 | 350 | { |
ab8f12cf HG |
351 | switch (gspca_dev->cam.cam_mode[mode].width) { |
352 | case 176: /* 176x144 */ | |
353 | /* uncompressed, add 2 bytes / line for line header */ | |
354 | return (176 + 2) * 144; | |
355 | case 352: /* 352x288 */ | |
356 | /* compressed */ | |
357 | return 352 * 288 / 2; | |
e2997a72 | 358 | } |
ab8f12cf | 359 | return -EIO; /* should never happen */ |
e2997a72 HG |
360 | } |
361 | ||
362 | /* auto gain and exposure algorithm based on the knee algorithm described here: | |
d43fa32f | 363 | * <http://ytse.tricolour.net/docs/LowLightOptimization.html> */ |
e2997a72 HG |
364 | static void pac207_do_auto_gain(struct gspca_dev *gspca_dev) |
365 | { | |
366 | struct sd *sd = (struct sd *) gspca_dev; | |
367 | int i, steps, desired_avg_lum; | |
368 | int orig_gain = sd->gain; | |
369 | int orig_exposure = sd->exposure; | |
370 | int avg_lum = atomic_read(&sd->avg_lum); | |
371 | ||
372 | if (!sd->autogain || avg_lum == -1) | |
373 | return; | |
374 | ||
375 | if (sd->autogain_ignore_frames > 0) { | |
376 | sd->autogain_ignore_frames--; | |
377 | return; | |
378 | } | |
379 | ||
380 | /* correct desired lumination for the configured brightness */ | |
381 | desired_avg_lum = 100 + sd->brightness / 2; | |
382 | ||
383 | /* If we are of a multiple of deadzone, do multiple step to reach the | |
384 | desired lumination fast (with the risc of a slight overshoot) */ | |
385 | steps = abs(desired_avg_lum - avg_lum) / PAC207_AUTOGAIN_DEADZONE; | |
386 | ||
387 | for (i = 0; i < steps; i++) { | |
388 | if (avg_lum > desired_avg_lum) { | |
956e42d2 | 389 | if (sd->gain > PAC207_GAIN_KNEE) |
e2997a72 | 390 | sd->gain--; |
956e42d2 | 391 | else if (sd->exposure > PAC207_EXPOSURE_KNEE) |
e2997a72 | 392 | sd->exposure--; |
956e42d2 | 393 | else if (sd->gain > PAC207_GAIN_DEFAULT) |
e2997a72 | 394 | sd->gain--; |
956e42d2 | 395 | else if (sd->exposure > PAC207_EXPOSURE_MIN) |
e2997a72 | 396 | sd->exposure--; |
956e42d2 | 397 | else if (sd->gain > PAC207_GAIN_MIN) |
e2997a72 | 398 | sd->gain--; |
956e42d2 | 399 | else |
e2997a72 HG |
400 | break; |
401 | } else { | |
956e42d2 | 402 | if (sd->gain < PAC207_GAIN_DEFAULT) |
e2997a72 | 403 | sd->gain++; |
956e42d2 | 404 | else if (sd->exposure < PAC207_EXPOSURE_KNEE) |
e2997a72 | 405 | sd->exposure++; |
956e42d2 | 406 | else if (sd->gain < PAC207_GAIN_KNEE) |
e2997a72 | 407 | sd->gain++; |
956e42d2 | 408 | else if (sd->exposure < PAC207_EXPOSURE_MAX) |
e2997a72 | 409 | sd->exposure++; |
956e42d2 | 410 | else if (sd->gain < PAC207_GAIN_MAX) |
e2997a72 | 411 | sd->gain++; |
956e42d2 | 412 | else |
e2997a72 HG |
413 | break; |
414 | } | |
415 | } | |
416 | ||
417 | if (sd->exposure != orig_exposure || sd->gain != orig_gain) { | |
418 | if (sd->exposure != orig_exposure) | |
419 | pac207_write_reg(gspca_dev, 0x0002, sd->exposure); | |
420 | if (sd->gain != orig_gain) | |
421 | pac207_write_reg(gspca_dev, 0x000e, sd->gain); | |
422 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* load reg to sen */ | |
423 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ | |
424 | sd->autogain_ignore_frames = PAC207_AUTOGAIN_IGNORE_FRAMES; | |
425 | } | |
426 | } | |
427 | ||
428 | static unsigned char *pac207_find_sof(struct gspca_dev *gspca_dev, | |
50a871fe | 429 | unsigned char *m, int len) |
e2997a72 HG |
430 | { |
431 | struct sd *sd = (struct sd *) gspca_dev; | |
432 | int i; | |
433 | ||
434 | /* Search for the SOF marker (fixed part) in the header */ | |
435 | for (i = 0; i < len; i++) { | |
436 | if (m[i] == pac207_sof_marker[sd->sof_read]) { | |
437 | sd->sof_read++; | |
438 | if (sd->sof_read == sizeof(pac207_sof_marker)) { | |
439 | PDEBUG(D_STREAM, | |
440 | "SOF found, bytes to analyze: %u." | |
441 | " Frame starts at byte #%u", | |
442 | len, i + 1); | |
443 | sd->sof_read = 0; | |
444 | return m + i + 1; | |
445 | } | |
d43fa32f | 446 | } else { |
e2997a72 | 447 | sd->sof_read = 0; |
d43fa32f | 448 | } |
e2997a72 HG |
449 | } |
450 | ||
451 | return NULL; | |
452 | } | |
453 | ||
e2997a72 HG |
454 | static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
455 | struct gspca_frame *frame, | |
a5ae2062 | 456 | __u8 *data, |
e2997a72 HG |
457 | int len) |
458 | { | |
ab8f12cf | 459 | struct sd *sd = (struct sd *) gspca_dev; |
e2997a72 | 460 | unsigned char *sof; |
e2997a72 HG |
461 | |
462 | sof = pac207_find_sof(gspca_dev, data, len); | |
e2997a72 | 463 | if (sof) { |
ab8f12cf HG |
464 | int n; |
465 | ||
e2997a72 | 466 | /* finish decoding current frame */ |
ab8f12cf HG |
467 | n = sof - data; |
468 | if (n > sizeof pac207_sof_marker) | |
469 | n -= sizeof pac207_sof_marker; | |
470 | else | |
471 | n = 0; | |
472 | frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame, | |
473 | data, n); | |
474 | sd->header_read = 0; | |
6a7eba24 | 475 | gspca_frame_add(gspca_dev, FIRST_PACKET, frame, NULL, 0); |
e2997a72 HG |
476 | len -= sof - data; |
477 | data = sof; | |
478 | } | |
ab8f12cf HG |
479 | if (sd->header_read < 11) { |
480 | int needed; | |
e2997a72 | 481 | |
ab8f12cf HG |
482 | /* get average lumination from frame header (byte 5) */ |
483 | if (sd->header_read < 5) { | |
484 | needed = 5 - sd->header_read; | |
485 | if (len >= needed) | |
486 | atomic_set(&sd->avg_lum, data[needed - 1]); | |
487 | } | |
488 | /* skip the rest of the header */ | |
489 | needed = 11 - sd->header_read; | |
490 | if (len <= needed) { | |
491 | sd->header_read += len; | |
492 | return; | |
493 | } | |
494 | data += needed; | |
495 | len -= needed; | |
496 | sd->header_read = 11; | |
497 | } | |
e2997a72 | 498 | |
ab8f12cf | 499 | gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len); |
e2997a72 HG |
500 | } |
501 | ||
502 | static void setbrightness(struct gspca_dev *gspca_dev) | |
503 | { | |
504 | struct sd *sd = (struct sd *) gspca_dev; | |
505 | ||
506 | pac207_write_reg(gspca_dev, 0x08, sd->brightness); | |
507 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ | |
508 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ | |
509 | } | |
510 | ||
511 | static void setexposure(struct gspca_dev *gspca_dev) | |
512 | { | |
513 | struct sd *sd = (struct sd *) gspca_dev; | |
514 | ||
515 | pac207_write_reg(gspca_dev, 0x02, sd->exposure); | |
516 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ | |
517 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ | |
518 | } | |
519 | ||
520 | static void setgain(struct gspca_dev *gspca_dev) | |
521 | { | |
522 | struct sd *sd = (struct sd *) gspca_dev; | |
523 | ||
524 | pac207_write_reg(gspca_dev, 0x0e, sd->gain); | |
525 | pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */ | |
526 | pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */ | |
527 | } | |
528 | ||
529 | static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val) | |
530 | { | |
531 | struct sd *sd = (struct sd *) gspca_dev; | |
532 | ||
533 | sd->brightness = val; | |
534 | if (gspca_dev->streaming) | |
535 | setbrightness(gspca_dev); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val) | |
540 | { | |
541 | struct sd *sd = (struct sd *) gspca_dev; | |
542 | ||
543 | *val = sd->brightness; | |
544 | return 0; | |
545 | } | |
546 | ||
547 | static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val) | |
548 | { | |
549 | struct sd *sd = (struct sd *) gspca_dev; | |
550 | ||
551 | /* don't allow mucking with exposure when using autogain */ | |
552 | if (sd->autogain) | |
553 | return -EINVAL; | |
554 | ||
555 | sd->exposure = val; | |
556 | if (gspca_dev->streaming) | |
557 | setexposure(gspca_dev); | |
558 | return 0; | |
559 | } | |
560 | ||
561 | static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val) | |
562 | { | |
563 | struct sd *sd = (struct sd *) gspca_dev; | |
564 | ||
565 | *val = sd->exposure; | |
566 | return 0; | |
567 | } | |
568 | ||
569 | static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val) | |
570 | { | |
571 | struct sd *sd = (struct sd *) gspca_dev; | |
572 | ||
573 | /* don't allow mucking with gain when using autogain */ | |
574 | if (sd->autogain) | |
575 | return -EINVAL; | |
576 | ||
577 | sd->gain = val; | |
578 | if (gspca_dev->streaming) | |
579 | setgain(gspca_dev); | |
580 | return 0; | |
581 | } | |
582 | ||
583 | static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val) | |
584 | { | |
585 | struct sd *sd = (struct sd *) gspca_dev; | |
586 | ||
587 | *val = sd->gain; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val) | |
592 | { | |
593 | struct sd *sd = (struct sd *) gspca_dev; | |
594 | ||
595 | sd->autogain = val; | |
596 | /* when switching to autogain set defaults to make sure | |
597 | we are on a valid point of the autogain gain / | |
598 | exposure knee graph, and give this change time to | |
599 | take effect before doing autogain. */ | |
600 | if (sd->autogain) { | |
601 | sd->exposure = PAC207_EXPOSURE_DEFAULT; | |
602 | sd->gain = PAC207_GAIN_DEFAULT; | |
603 | if (gspca_dev->streaming) { | |
604 | sd->autogain_ignore_frames = | |
605 | PAC207_AUTOGAIN_IGNORE_FRAMES; | |
606 | setexposure(gspca_dev); | |
607 | setgain(gspca_dev); | |
608 | } | |
609 | } | |
610 | ||
611 | return 0; | |
612 | } | |
613 | ||
614 | static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val) | |
615 | { | |
616 | struct sd *sd = (struct sd *) gspca_dev; | |
617 | ||
618 | *val = sd->autogain; | |
619 | return 0; | |
620 | } | |
621 | ||
622 | /* sub-driver description */ | |
a5ae2062 | 623 | static const struct sd_desc sd_desc = { |
e2997a72 HG |
624 | .name = MODULE_NAME, |
625 | .ctrls = sd_ctrls, | |
626 | .nctrls = ARRAY_SIZE(sd_ctrls), | |
627 | .config = sd_config, | |
628 | .open = sd_open, | |
629 | .start = sd_start, | |
630 | .stopN = sd_stopN, | |
631 | .stop0 = sd_stop0, | |
632 | .close = sd_close, | |
633 | .dq_callback = pac207_do_auto_gain, | |
634 | .pkt_scan = sd_pkt_scan, | |
ab8f12cf | 635 | .get_buff_size = sd_get_buff_size_op, |
e2997a72 HG |
636 | }; |
637 | ||
638 | /* -- module initialisation -- */ | |
639 | #define DVNM(name) .driver_info = (kernel_ulong_t) name | |
a5ae2062 | 640 | static const __devinitdata struct usb_device_id device_table[] = { |
e2997a72 | 641 | {USB_DEVICE(0x041e, 0x4028), DVNM("Creative Webcam Vista Plus")}, |
d43fa32f | 642 | {USB_DEVICE(0x093a, 0x2460), DVNM("Q-Tec Webcam 100")}, |
e2997a72 HG |
643 | {USB_DEVICE(0x093a, 0x2463), DVNM("Philips spc200nc pac207")}, |
644 | {USB_DEVICE(0x093a, 0x2464), DVNM("Labtec Webcam 1200")}, | |
645 | {USB_DEVICE(0x093a, 0x2468), DVNM("PAC207")}, | |
646 | {USB_DEVICE(0x093a, 0x2470), DVNM("Genius GF112")}, | |
d43fa32f JFM |
647 | {USB_DEVICE(0x093a, 0x2471), DVNM("Genius VideoCam GE111")}, |
648 | {USB_DEVICE(0x093a, 0x2472), DVNM("Genius VideoCam GE110")}, | |
e2997a72 HG |
649 | {USB_DEVICE(0x2001, 0xf115), DVNM("D-Link DSB-C120")}, |
650 | {} | |
651 | }; | |
652 | MODULE_DEVICE_TABLE(usb, device_table); | |
653 | ||
654 | /* -- device connect -- */ | |
655 | static int sd_probe(struct usb_interface *intf, | |
656 | const struct usb_device_id *id) | |
657 | { | |
d43fa32f JFM |
658 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), |
659 | THIS_MODULE); | |
e2997a72 HG |
660 | } |
661 | ||
662 | static struct usb_driver sd_driver = { | |
663 | .name = MODULE_NAME, | |
664 | .id_table = device_table, | |
665 | .probe = sd_probe, | |
666 | .disconnect = gspca_disconnect, | |
667 | }; | |
668 | ||
669 | /* -- module insert / remove -- */ | |
670 | static int __init sd_mod_init(void) | |
671 | { | |
e2997a72 HG |
672 | if (usb_register(&sd_driver) < 0) |
673 | return -1; | |
674 | PDEBUG(D_PROBE, "v%s registered", version); | |
675 | return 0; | |
676 | } | |
677 | static void __exit sd_mod_exit(void) | |
678 | { | |
679 | usb_deregister(&sd_driver); | |
680 | PDEBUG(D_PROBE, "deregistered"); | |
681 | } | |
682 | ||
683 | module_init(sd_mod_init); | |
684 | module_exit(sd_mod_exit); |