1 /*
2 * Driver for the po1030 sensor
3 *
4 * Copyright (c) 2008 Erik Andrén
5 * Copyright (c) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
6 * Copyright (c) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
7 *
8 * Portions of code to USB interface and ALi driver software,
9 * Copyright (c) 2006 Willem Duinker
10 * v4l2 interface modeled after the V4L2 driver
11 * for SN9C10x PC Camera Controllers
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation, version 2.
16 *
17 */
18
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
20
21 #include "m5602_po1030.h"
22
23 static int po1030_s_ctrl(struct v4l2_ctrl *ctrl);
24 static void po1030_dump_registers(struct sd *sd);
25
26 static const unsigned char preinit_po1030[][3] = {
27 {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
28 {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
29 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
30 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
31 {BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
32 {BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
33 {BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
34 {BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
35 {BRIDGE, M5602_XB_GPIO_DIR, 0x05},
36 {BRIDGE, M5602_XB_GPIO_DAT, 0x04},
37 {BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
38 {BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
39 {BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
40
41 {SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
42
43 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
44 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
45 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
46 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
47 {BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
48 {BRIDGE, M5602_XB_GPIO_DIR, 0x05},
49 {BRIDGE, M5602_XB_GPIO_DAT, 0x00}
50 };
51
52 static const unsigned char init_po1030[][3] = {
53 {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02},
54 {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0},
55 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
56 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
57 {BRIDGE, M5602_XB_ADC_CTRL, 0xc0},
58 {BRIDGE, M5602_XB_SENSOR_CTRL, 0x00},
59 {BRIDGE, M5602_XB_SENSOR_TYPE, 0x0c},
60
61 {SENSOR, PO1030_AUTOCTRL2, PO1030_SENSOR_RESET | (1 << 2)},
62
63 {BRIDGE, M5602_XB_GPIO_DIR, 0x05},
64 {BRIDGE, M5602_XB_GPIO_DAT, 0x04},
65 {BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
66 {BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
67 {BRIDGE, M5602_XB_GPIO_DIR_H, 0x06},
68 {BRIDGE, M5602_XB_GPIO_DAT_H, 0x02},
69 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x04},
70 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
71 {BRIDGE, M5602_XB_GPIO_DIR, 0x05},
72 {BRIDGE, M5602_XB_GPIO_DAT, 0x00},
73
74 {SENSOR, PO1030_AUTOCTRL2, 0x04},
75
76 {SENSOR, PO1030_OUTFORMCTRL2, PO1030_RAW_RGB_BAYER},
77 {SENSOR, PO1030_AUTOCTRL1, PO1030_WEIGHT_WIN_2X},
78
79 {SENSOR, PO1030_CONTROL2, 0x03},
80 {SENSOR, 0x21, 0x90},
81 {SENSOR, PO1030_YTARGET, 0x60},
82 {SENSOR, 0x59, 0x13},
83 {SENSOR, PO1030_OUTFORMCTRL1, PO1030_HREF_ENABLE},
84 {SENSOR, PO1030_EDGE_ENH_OFF, 0x00},
85 {SENSOR, PO1030_EGA, 0x80},
86 {SENSOR, 0x78, 0x14},
87 {SENSOR, 0x6f, 0x01},
88 {SENSOR, PO1030_GLOBALGAINMAX, 0x14},
89 {SENSOR, PO1030_Cb_U_GAIN, 0x38},
90 {SENSOR, PO1030_Cr_V_GAIN, 0x38},
91 {SENSOR, PO1030_CONTROL1, PO1030_SHUTTER_MODE |
92 PO1030_AUTO_SUBSAMPLING |
93 PO1030_FRAME_EQUAL},
94 {SENSOR, PO1030_GC0, 0x10},
95 {SENSOR, PO1030_GC1, 0x20},
96 {SENSOR, PO1030_GC2, 0x40},
97 {SENSOR, PO1030_GC3, 0x60},
98 {SENSOR, PO1030_GC4, 0x80},
99 {SENSOR, PO1030_GC5, 0xa0},
100 {SENSOR, PO1030_GC6, 0xc0},
101 {SENSOR, PO1030_GC7, 0xff},
102
103 /* Set the width to 751 */
104 {SENSOR, PO1030_FRAMEWIDTH_H, 0x02},
105 {SENSOR, PO1030_FRAMEWIDTH_L, 0xef},
106
107 /* Set the height to 540 */
108 {SENSOR, PO1030_FRAMEHEIGHT_H, 0x02},
109 {SENSOR, PO1030_FRAMEHEIGHT_L, 0x1c},
110
111 /* Set the x window to 1 */
112 {SENSOR, PO1030_WINDOWX_H, 0x00},
113 {SENSOR, PO1030_WINDOWX_L, 0x01},
114
115 /* Set the y window to 1 */
116 {SENSOR, PO1030_WINDOWY_H, 0x00},
117 {SENSOR, PO1030_WINDOWY_L, 0x01},
118
119 /* with a very low lighted environment increase the exposure but
120 * decrease the FPS (Frame Per Second) */
121 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00},
122 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0},
123
124 {BRIDGE, M5602_XB_GPIO_DIR, 0x05},
125 {BRIDGE, M5602_XB_GPIO_DAT, 0x00},
126 {BRIDGE, M5602_XB_GPIO_EN_H, 0x06},
127 {BRIDGE, M5602_XB_GPIO_EN_L, 0x00},
128 };
129
130 static struct v4l2_pix_format po1030_modes[] = {
131 {
132 640,
133 480,
134 V4L2_PIX_FMT_SBGGR8,
135 V4L2_FIELD_NONE,
136 .sizeimage = 640 * 480,
137 .bytesperline = 640,
138 .colorspace = V4L2_COLORSPACE_SRGB,
139 .priv = 2
140 }
141 };
142
143 static const struct v4l2_ctrl_ops po1030_ctrl_ops = {
144 .s_ctrl = po1030_s_ctrl,
145 };
146
147 static const struct v4l2_ctrl_config po1030_greenbal_cfg = {
148 .ops = &po1030_ctrl_ops,
149 .id = M5602_V4L2_CID_GREEN_BALANCE,
150 .name = "Green Balance",
151 .type = V4L2_CTRL_TYPE_INTEGER,
152 .min = 0,
153 .max = 255,
154 .step = 1,
155 .def = PO1030_GREEN_GAIN_DEFAULT,
156 .flags = V4L2_CTRL_FLAG_SLIDER,
157 };
158
po1030_probe(struct sd * sd)159 int po1030_probe(struct sd *sd)
160 {
161 u8 dev_id_h = 0, i;
162 int err;
163 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd;
164
165 if (force_sensor) {
166 if (force_sensor == PO1030_SENSOR) {
167 pr_info("Forcing a %s sensor\n", po1030.name);
168 goto sensor_found;
169 }
170 /* If we want to force another sensor, don't try to probe this
171 * one */
172 return -ENODEV;
173 }
174
175 gspca_dbg(gspca_dev, D_PROBE, "Probing for a po1030 sensor\n");
176
177 /* Run the pre-init to actually probe the unit */
178 for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
179 u8 data = preinit_po1030[i][2];
180 if (preinit_po1030[i][0] == SENSOR)
181 err = m5602_write_sensor(sd, preinit_po1030[i][1],
182 &data, 1);
183 else
184 err = m5602_write_bridge(sd, preinit_po1030[i][1],
185 data);
186 if (err < 0)
187 return err;
188 }
189
190 if (m5602_read_sensor(sd, PO1030_DEVID_H, &dev_id_h, 1))
191 return -ENODEV;
192
193 if (dev_id_h == 0x30) {
194 pr_info("Detected a po1030 sensor\n");
195 goto sensor_found;
196 }
197 return -ENODEV;
198
199 sensor_found:
200 sd->gspca_dev.cam.cam_mode = po1030_modes;
201 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(po1030_modes);
202
203 return 0;
204 }
205
po1030_init(struct sd * sd)206 int po1030_init(struct sd *sd)
207 {
208 int i, err = 0;
209
210 /* Init the sensor */
211 for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
212 u8 data[2] = {0x00, 0x00};
213
214 switch (init_po1030[i][0]) {
215 case BRIDGE:
216 err = m5602_write_bridge(sd,
217 init_po1030[i][1],
218 init_po1030[i][2]);
219 break;
220
221 case SENSOR:
222 data[0] = init_po1030[i][2];
223 err = m5602_write_sensor(sd,
224 init_po1030[i][1], data, 1);
225 break;
226
227 default:
228 pr_info("Invalid stream command, exiting init\n");
229 return -EINVAL;
230 }
231 }
232 if (err < 0)
233 return err;
234
235 if (dump_sensor)
236 po1030_dump_registers(sd);
237
238 return 0;
239 }
240
po1030_init_controls(struct sd * sd)241 int po1030_init_controls(struct sd *sd)
242 {
243 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler;
244
245 sd->gspca_dev.vdev.ctrl_handler = hdl;
246 v4l2_ctrl_handler_init(hdl, 9);
247
248 sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
249 V4L2_CID_AUTO_WHITE_BALANCE,
250 0, 1, 1, 0);
251 sd->green_bal = v4l2_ctrl_new_custom(hdl, &po1030_greenbal_cfg, NULL);
252 sd->red_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
253 V4L2_CID_RED_BALANCE, 0, 255, 1,
254 PO1030_RED_GAIN_DEFAULT);
255 sd->blue_bal = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops,
256 V4L2_CID_BLUE_BALANCE, 0, 255, 1,
257 PO1030_BLUE_GAIN_DEFAULT);
258
259 sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &po1030_ctrl_ops,
260 V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_MANUAL);
261 sd->expo = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_EXPOSURE,
262 0, 0x2ff, 1, PO1030_EXPOSURE_DEFAULT);
263
264 sd->gain = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_GAIN, 0,
265 0x4f, 1, PO1030_GLOBAL_GAIN_DEFAULT);
266
267 sd->hflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_HFLIP,
268 0, 1, 1, 0);
269 sd->vflip = v4l2_ctrl_new_std(hdl, &po1030_ctrl_ops, V4L2_CID_VFLIP,
270 0, 1, 1, 0);
271
272 if (hdl->error) {
273 pr_err("Could not initialize controls\n");
274 return hdl->error;
275 }
276
277 v4l2_ctrl_auto_cluster(4, &sd->auto_white_bal, 0, false);
278 v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false);
279 v4l2_ctrl_cluster(2, &sd->hflip);
280
281 return 0;
282 }
283
po1030_start(struct sd * sd)284 int po1030_start(struct sd *sd)
285 {
286 struct cam *cam = &sd->gspca_dev.cam;
287 int i, err = 0;
288 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
289 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
290 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
291 u8 data;
292
293 switch (width) {
294 case 320:
295 data = PO1030_SUBSAMPLING;
296 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
297 if (err < 0)
298 return err;
299
300 data = ((width + 3) >> 8) & 0xff;
301 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
302 if (err < 0)
303 return err;
304
305 data = (width + 3) & 0xff;
306 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
307 if (err < 0)
308 return err;
309
310 data = ((height + 1) >> 8) & 0xff;
311 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
312 if (err < 0)
313 return err;
314
315 data = (height + 1) & 0xff;
316 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
317
318 height += 6;
319 width -= 1;
320 break;
321
322 case 640:
323 data = 0;
324 err = m5602_write_sensor(sd, PO1030_CONTROL3, &data, 1);
325 if (err < 0)
326 return err;
327
328 data = ((width + 7) >> 8) & 0xff;
329 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_H, &data, 1);
330 if (err < 0)
331 return err;
332
333 data = (width + 7) & 0xff;
334 err = m5602_write_sensor(sd, PO1030_WINDOWWIDTH_L, &data, 1);
335 if (err < 0)
336 return err;
337
338 data = ((height + 3) >> 8) & 0xff;
339 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_H, &data, 1);
340 if (err < 0)
341 return err;
342
343 data = (height + 3) & 0xff;
344 err = m5602_write_sensor(sd, PO1030_WINDOWHEIGHT_L, &data, 1);
345
346 height += 12;
347 width -= 2;
348 break;
349 }
350 err = m5602_write_bridge(sd, M5602_XB_SENSOR_TYPE, 0x0c);
351 if (err < 0)
352 return err;
353
354 err = m5602_write_bridge(sd, M5602_XB_LINE_OF_FRAME_H, 0x81);
355 if (err < 0)
356 return err;
357
358 err = m5602_write_bridge(sd, M5602_XB_PIX_OF_LINE_H, 0x82);
359 if (err < 0)
360 return err;
361
362 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0x01);
363 if (err < 0)
364 return err;
365
366 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA,
367 ((ver_offs >> 8) & 0xff));
368 if (err < 0)
369 return err;
370
371 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
372 if (err < 0)
373 return err;
374
375 for (i = 0; i < 2 && !err; i++)
376 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
377 if (err < 0)
378 return err;
379
380 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
381 if (err < 0)
382 return err;
383
384 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
385 if (err < 0)
386 return err;
387
388 for (i = 0; i < 2 && !err; i++)
389 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
390
391 for (i = 0; i < 2 && !err; i++)
392 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
393
394 for (i = 0; i < 2 && !err; i++)
395 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 0);
396 if (err < 0)
397 return err;
398
399 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width >> 8) & 0xff);
400 if (err < 0)
401 return err;
402
403 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (width & 0xff));
404 if (err < 0)
405 return err;
406
407 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0);
408 return err;
409 }
410
po1030_set_exposure(struct gspca_dev * gspca_dev,__s32 val)411 static int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
412 {
413 struct sd *sd = (struct sd *) gspca_dev;
414 u8 i2c_data;
415 int err;
416
417 gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val & 0xffff);
418
419 i2c_data = ((val & 0xff00) >> 8);
420 gspca_dbg(gspca_dev, D_CONF, "Set exposure to high byte to 0x%x\n",
421 i2c_data);
422
423 err = m5602_write_sensor(sd, PO1030_INTEGLINES_H,
424 &i2c_data, 1);
425 if (err < 0)
426 return err;
427
428 i2c_data = (val & 0xff);
429 gspca_dbg(gspca_dev, D_CONF, "Set exposure to low byte to 0x%x\n",
430 i2c_data);
431 err = m5602_write_sensor(sd, PO1030_INTEGLINES_M,
432 &i2c_data, 1);
433
434 return err;
435 }
436
po1030_set_gain(struct gspca_dev * gspca_dev,__s32 val)437 static int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
438 {
439 struct sd *sd = (struct sd *) gspca_dev;
440 u8 i2c_data;
441 int err;
442
443 i2c_data = val & 0xff;
444 gspca_dbg(gspca_dev, D_CONF, "Set global gain to %d\n", i2c_data);
445 err = m5602_write_sensor(sd, PO1030_GLOBALGAIN,
446 &i2c_data, 1);
447 return err;
448 }
449
po1030_set_hvflip(struct gspca_dev * gspca_dev)450 static int po1030_set_hvflip(struct gspca_dev *gspca_dev)
451 {
452 struct sd *sd = (struct sd *) gspca_dev;
453 u8 i2c_data;
454 int err;
455
456 gspca_dbg(gspca_dev, D_CONF, "Set hvflip %d %d\n",
457 sd->hflip->val, sd->vflip->val);
458 err = m5602_read_sensor(sd, PO1030_CONTROL2, &i2c_data, 1);
459 if (err < 0)
460 return err;
461
462 i2c_data = (0x3f & i2c_data) | (sd->hflip->val << 7) |
463 (sd->vflip->val << 6);
464
465 err = m5602_write_sensor(sd, PO1030_CONTROL2,
466 &i2c_data, 1);
467
468 return err;
469 }
470
po1030_set_red_balance(struct gspca_dev * gspca_dev,__s32 val)471 static int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
472 {
473 struct sd *sd = (struct sd *) gspca_dev;
474 u8 i2c_data;
475 int err;
476
477 i2c_data = val & 0xff;
478 gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d\n", i2c_data);
479 err = m5602_write_sensor(sd, PO1030_RED_GAIN,
480 &i2c_data, 1);
481 return err;
482 }
483
po1030_set_blue_balance(struct gspca_dev * gspca_dev,__s32 val)484 static int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
485 {
486 struct sd *sd = (struct sd *) gspca_dev;
487 u8 i2c_data;
488 int err;
489
490 i2c_data = val & 0xff;
491 gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d\n", i2c_data);
492 err = m5602_write_sensor(sd, PO1030_BLUE_GAIN,
493 &i2c_data, 1);
494
495 return err;
496 }
497
po1030_set_green_balance(struct gspca_dev * gspca_dev,__s32 val)498 static int po1030_set_green_balance(struct gspca_dev *gspca_dev, __s32 val)
499 {
500 struct sd *sd = (struct sd *) gspca_dev;
501 u8 i2c_data;
502 int err;
503
504 i2c_data = val & 0xff;
505 gspca_dbg(gspca_dev, D_CONF, "Set green gain to %d\n", i2c_data);
506
507 err = m5602_write_sensor(sd, PO1030_GREEN_1_GAIN,
508 &i2c_data, 1);
509 if (err < 0)
510 return err;
511
512 return m5602_write_sensor(sd, PO1030_GREEN_2_GAIN,
513 &i2c_data, 1);
514 }
515
po1030_set_auto_white_balance(struct gspca_dev * gspca_dev,__s32 val)516 static int po1030_set_auto_white_balance(struct gspca_dev *gspca_dev,
517 __s32 val)
518 {
519 struct sd *sd = (struct sd *) gspca_dev;
520 u8 i2c_data;
521 int err;
522
523 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
524 if (err < 0)
525 return err;
526
527 gspca_dbg(gspca_dev, D_CONF, "Set auto white balance to %d\n", val);
528 i2c_data = (i2c_data & 0xfe) | (val & 0x01);
529 err = m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
530 return err;
531 }
532
po1030_set_auto_exposure(struct gspca_dev * gspca_dev,__s32 val)533 static int po1030_set_auto_exposure(struct gspca_dev *gspca_dev,
534 __s32 val)
535 {
536 struct sd *sd = (struct sd *) gspca_dev;
537 u8 i2c_data;
538 int err;
539
540 err = m5602_read_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
541 if (err < 0)
542 return err;
543
544 gspca_dbg(gspca_dev, D_CONF, "Set auto exposure to %d\n", val);
545 val = (val == V4L2_EXPOSURE_AUTO);
546 i2c_data = (i2c_data & 0xfd) | ((val & 0x01) << 1);
547 return m5602_write_sensor(sd, PO1030_AUTOCTRL1, &i2c_data, 1);
548 }
549
po1030_disconnect(struct sd * sd)550 void po1030_disconnect(struct sd *sd)
551 {
552 sd->sensor = NULL;
553 }
554
po1030_s_ctrl(struct v4l2_ctrl * ctrl)555 static int po1030_s_ctrl(struct v4l2_ctrl *ctrl)
556 {
557 struct gspca_dev *gspca_dev =
558 container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
559 struct sd *sd = (struct sd *) gspca_dev;
560 int err;
561
562 if (!gspca_dev->streaming)
563 return 0;
564
565 switch (ctrl->id) {
566 case V4L2_CID_AUTO_WHITE_BALANCE:
567 err = po1030_set_auto_white_balance(gspca_dev, ctrl->val);
568 if (err || ctrl->val)
569 return err;
570 err = po1030_set_green_balance(gspca_dev, sd->green_bal->val);
571 if (err)
572 return err;
573 err = po1030_set_red_balance(gspca_dev, sd->red_bal->val);
574 if (err)
575 return err;
576 err = po1030_set_blue_balance(gspca_dev, sd->blue_bal->val);
577 break;
578 case V4L2_CID_EXPOSURE_AUTO:
579 err = po1030_set_auto_exposure(gspca_dev, ctrl->val);
580 if (err || ctrl->val == V4L2_EXPOSURE_AUTO)
581 return err;
582 err = po1030_set_exposure(gspca_dev, sd->expo->val);
583 break;
584 case V4L2_CID_GAIN:
585 err = po1030_set_gain(gspca_dev, ctrl->val);
586 break;
587 case V4L2_CID_HFLIP:
588 err = po1030_set_hvflip(gspca_dev);
589 break;
590 default:
591 return -EINVAL;
592 }
593
594 return err;
595 }
596
po1030_dump_registers(struct sd * sd)597 static void po1030_dump_registers(struct sd *sd)
598 {
599 int address;
600 u8 value = 0;
601
602 pr_info("Dumping the po1030 sensor core registers\n");
603 for (address = 0; address < 0x7f; address++) {
604 m5602_read_sensor(sd, address, &value, 1);
605 pr_info("register 0x%x contains 0x%x\n", address, value);
606 }
607
608 pr_info("po1030 register state dump complete\n");
609
610 pr_info("Probing for which registers that are read/write\n");
611 for (address = 0; address < 0xff; address++) {
612 u8 old_value, ctrl_value;
613 u8 test_value[2] = {0xff, 0xff};
614
615 m5602_read_sensor(sd, address, &old_value, 1);
616 m5602_write_sensor(sd, address, test_value, 1);
617 m5602_read_sensor(sd, address, &ctrl_value, 1);
618
619 if (ctrl_value == test_value[0])
620 pr_info("register 0x%x is writeable\n", address);
621 else
622 pr_info("register 0x%x is read only\n", address);
623
624 /* Restore original value */
625 m5602_write_sensor(sd, address, &old_value, 1);
626 }
627 }
628