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 }; 158 159 int po1030_probe(struct sd *sd) 160 { 161 int rc = 0; 162 u8 dev_id_h = 0, i; 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 rc |= m5602_write_sensor(sd, 182 preinit_po1030[i][1], &data, 1); 183 else 184 rc |= m5602_write_bridge(sd, preinit_po1030[i][1], 185 data); 186 } 187 if (rc < 0) 188 return rc; 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 } 205 206 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 } 240 241 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 } 283 284 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 } 410 411 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 } 436 437 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 } 449 450 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 } 470 471 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 } 483 484 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 } 497 498 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 } 515 516 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 } 532 533 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 } 549 550 void po1030_disconnect(struct sd *sd) 551 { 552 sd->sensor = NULL; 553 } 554 555 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 } 596 597 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