1 2 /* 3 * Driver for the ov9650 sensor 4 * 5 * Copyright (C) 2008 Erik Andrén 6 * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project. 7 * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br> 8 * 9 * Portions of code to USB interface and ALi driver software, 10 * Copyright (c) 2006 Willem Duinker 11 * v4l2 interface modeled after the V4L2 driver 12 * for SN9C10x PC Camera Controllers 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License as 16 * published by the Free Software Foundation, version 2. 17 * 18 */ 19 20 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 21 22 #include "m5602_ov9650.h" 23 24 static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl); 25 static void ov9650_dump_registers(struct sd *sd); 26 27 static const unsigned char preinit_ov9650[][3] = { 28 /* [INITCAM] */ 29 {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02}, 30 {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0}, 31 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00}, 32 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0}, 33 {BRIDGE, M5602_XB_ADC_CTRL, 0xc0}, 34 {BRIDGE, M5602_XB_SENSOR_CTRL, 0x00}, 35 36 {BRIDGE, M5602_XB_SENSOR_TYPE, 0x08}, 37 {BRIDGE, M5602_XB_GPIO_DIR, 0x05}, 38 {BRIDGE, M5602_XB_GPIO_DAT, 0x04}, 39 {BRIDGE, M5602_XB_GPIO_EN_H, 0x06}, 40 {BRIDGE, M5602_XB_GPIO_DIR_H, 0x06}, 41 {BRIDGE, M5602_XB_GPIO_DAT_H, 0x00}, 42 {BRIDGE, M5602_XB_GPIO_DAT, 0x00}, 43 {BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a}, 44 /* Reset chip */ 45 {SENSOR, OV9650_COM7, OV9650_REGISTER_RESET}, 46 /* Enable double clock */ 47 {SENSOR, OV9650_CLKRC, 0x80}, 48 /* Do something out of spec with the power */ 49 {SENSOR, OV9650_OFON, 0x40} 50 }; 51 52 static const unsigned char init_ov9650[][3] = { 53 /* [INITCAM] */ 54 {BRIDGE, M5602_XB_MCU_CLK_DIV, 0x02}, 55 {BRIDGE, M5602_XB_MCU_CLK_CTRL, 0xb0}, 56 {BRIDGE, M5602_XB_SEN_CLK_DIV, 0x00}, 57 {BRIDGE, M5602_XB_SEN_CLK_CTRL, 0xb0}, 58 {BRIDGE, M5602_XB_ADC_CTRL, 0xc0}, 59 {BRIDGE, M5602_XB_SENSOR_CTRL, 0x00}, 60 61 {BRIDGE, M5602_XB_SENSOR_TYPE, 0x08}, 62 {BRIDGE, M5602_XB_GPIO_DIR, 0x05}, 63 {BRIDGE, M5602_XB_GPIO_DAT, 0x04}, 64 {BRIDGE, M5602_XB_GPIO_EN_H, 0x06}, 65 {BRIDGE, M5602_XB_GPIO_DIR_H, 0x06}, 66 {BRIDGE, M5602_XB_GPIO_DAT_H, 0x00}, 67 {BRIDGE, M5602_XB_GPIO_DAT, 0x00}, 68 {BRIDGE, M5602_XB_I2C_CLK_DIV, 0x0a}, 69 70 /* Reset chip */ 71 {SENSOR, OV9650_COM7, OV9650_REGISTER_RESET}, 72 /* One extra reset is needed in order to make the sensor behave 73 properly when resuming from ram, could be a timing issue */ 74 {SENSOR, OV9650_COM7, OV9650_REGISTER_RESET}, 75 76 /* Enable double clock */ 77 {SENSOR, OV9650_CLKRC, 0x80}, 78 /* Do something out of spec with the power */ 79 {SENSOR, OV9650_OFON, 0x40}, 80 81 /* Set fast AGC/AEC algorithm with unlimited step size */ 82 {SENSOR, OV9650_COM8, OV9650_FAST_AGC_AEC | 83 OV9650_AEC_UNLIM_STEP_SIZE}, 84 85 {SENSOR, OV9650_CHLF, 0x10}, 86 {SENSOR, OV9650_ARBLM, 0xbf}, 87 {SENSOR, OV9650_ACOM38, 0x81}, 88 /* Turn off color matrix coefficient double option */ 89 {SENSOR, OV9650_COM16, 0x00}, 90 /* Enable color matrix for RGB/YUV, Delay Y channel, 91 set output Y/UV delay to 1 */ 92 {SENSOR, OV9650_COM13, 0x19}, 93 /* Enable digital BLC, Set output mode to U Y V Y */ 94 {SENSOR, OV9650_TSLB, 0x0c}, 95 /* Limit the AGC/AEC stable upper region */ 96 {SENSOR, OV9650_COM24, 0x00}, 97 /* Enable HREF and some out of spec things */ 98 {SENSOR, OV9650_COM12, 0x73}, 99 /* Set all DBLC offset signs to positive and 100 do some out of spec stuff */ 101 {SENSOR, OV9650_DBLC1, 0xdf}, 102 {SENSOR, OV9650_COM21, 0x06}, 103 {SENSOR, OV9650_RSVD35, 0x91}, 104 /* Necessary, no camera stream without it */ 105 {SENSOR, OV9650_RSVD16, 0x06}, 106 {SENSOR, OV9650_RSVD94, 0x99}, 107 {SENSOR, OV9650_RSVD95, 0x99}, 108 {SENSOR, OV9650_RSVD96, 0x04}, 109 /* Enable full range output */ 110 {SENSOR, OV9650_COM15, 0x0}, 111 /* Enable HREF at optical black, enable ADBLC bias, 112 enable ADBLC, reset timings at format change */ 113 {SENSOR, OV9650_COM6, 0x4b}, 114 /* Subtract 32 from the B channel bias */ 115 {SENSOR, OV9650_BBIAS, 0xa0}, 116 /* Subtract 32 from the Gb channel bias */ 117 {SENSOR, OV9650_GbBIAS, 0xa0}, 118 /* Do not bypass the analog BLC and to some out of spec stuff */ 119 {SENSOR, OV9650_Gr_COM, 0x00}, 120 /* Subtract 32 from the R channel bias */ 121 {SENSOR, OV9650_RBIAS, 0xa0}, 122 /* Subtract 32 from the R channel bias */ 123 {SENSOR, OV9650_RBIAS, 0x0}, 124 {SENSOR, OV9650_COM26, 0x80}, 125 {SENSOR, OV9650_ACOMA9, 0x98}, 126 /* Set the AGC/AEC stable region upper limit */ 127 {SENSOR, OV9650_AEW, 0x68}, 128 /* Set the AGC/AEC stable region lower limit */ 129 {SENSOR, OV9650_AEB, 0x5c}, 130 /* Set the high and low limit nibbles to 3 */ 131 {SENSOR, OV9650_VPT, 0xc3}, 132 /* Set the Automatic Gain Ceiling (AGC) to 128x, 133 drop VSYNC at frame drop, 134 limit exposure timing, 135 drop frame when the AEC step is larger than the exposure gap */ 136 {SENSOR, OV9650_COM9, 0x6e}, 137 /* Set VSYNC negative, Set RESET to SLHS (slave mode horizontal sync) 138 and set PWDN to SLVS (slave mode vertical sync) */ 139 {SENSOR, OV9650_COM10, 0x42}, 140 /* Set horizontal column start high to default value */ 141 {SENSOR, OV9650_HSTART, 0x1a}, /* 210 */ 142 /* Set horizontal column end */ 143 {SENSOR, OV9650_HSTOP, 0xbf}, /* 1534 */ 144 /* Complementing register to the two writes above */ 145 {SENSOR, OV9650_HREF, 0xb2}, 146 /* Set vertical row start high bits */ 147 {SENSOR, OV9650_VSTRT, 0x02}, 148 /* Set vertical row end low bits */ 149 {SENSOR, OV9650_VSTOP, 0x7e}, 150 /* Set complementing vertical frame control */ 151 {SENSOR, OV9650_VREF, 0x10}, 152 {SENSOR, OV9650_ADC, 0x04}, 153 {SENSOR, OV9650_HV, 0x40}, 154 155 /* Enable denoise, and white-pixel erase */ 156 {SENSOR, OV9650_COM22, OV9650_DENOISE_ENABLE | 157 OV9650_WHITE_PIXEL_ENABLE | 158 OV9650_WHITE_PIXEL_OPTION}, 159 160 /* Enable VARIOPIXEL */ 161 {SENSOR, OV9650_COM3, OV9650_VARIOPIXEL}, 162 {SENSOR, OV9650_COM4, OV9650_QVGA_VARIOPIXEL}, 163 164 /* Put the sensor in soft sleep mode */ 165 {SENSOR, OV9650_COM2, OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X}, 166 }; 167 168 static const unsigned char res_init_ov9650[][3] = { 169 {SENSOR, OV9650_COM2, OV9650_OUTPUT_DRIVE_2X}, 170 171 {BRIDGE, M5602_XB_LINE_OF_FRAME_H, 0x82}, 172 {BRIDGE, M5602_XB_LINE_OF_FRAME_L, 0x00}, 173 {BRIDGE, M5602_XB_PIX_OF_LINE_H, 0x82}, 174 {BRIDGE, M5602_XB_PIX_OF_LINE_L, 0x00}, 175 {BRIDGE, M5602_XB_SIG_INI, 0x01} 176 }; 177 178 /* Vertically and horizontally flips the image if matched, needed for machines 179 where the sensor is mounted upside down */ 180 static 181 const 182 struct dmi_system_id ov9650_flip_dmi_table[] = { 183 { 184 .ident = "ASUS A6Ja", 185 .matches = { 186 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 187 DMI_MATCH(DMI_PRODUCT_NAME, "A6J") 188 } 189 }, 190 { 191 .ident = "ASUS A6JC", 192 .matches = { 193 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 194 DMI_MATCH(DMI_PRODUCT_NAME, "A6JC") 195 } 196 }, 197 { 198 .ident = "ASUS A6K", 199 .matches = { 200 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 201 DMI_MATCH(DMI_PRODUCT_NAME, "A6K") 202 } 203 }, 204 { 205 .ident = "ASUS A6Kt", 206 .matches = { 207 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 208 DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt") 209 } 210 }, 211 { 212 .ident = "ASUS A6VA", 213 .matches = { 214 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 215 DMI_MATCH(DMI_PRODUCT_NAME, "A6VA") 216 } 217 }, 218 { 219 220 .ident = "ASUS A6VC", 221 .matches = { 222 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 223 DMI_MATCH(DMI_PRODUCT_NAME, "A6VC") 224 } 225 }, 226 { 227 .ident = "ASUS A6VM", 228 .matches = { 229 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 230 DMI_MATCH(DMI_PRODUCT_NAME, "A6VM") 231 } 232 }, 233 { 234 .ident = "ASUS A7V", 235 .matches = { 236 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), 237 DMI_MATCH(DMI_PRODUCT_NAME, "A7V") 238 } 239 }, 240 { 241 .ident = "Alienware Aurora m9700", 242 .matches = { 243 DMI_MATCH(DMI_SYS_VENDOR, "alienware"), 244 DMI_MATCH(DMI_PRODUCT_NAME, "Aurora m9700") 245 } 246 }, 247 {} 248 }; 249 250 static struct v4l2_pix_format ov9650_modes[] = { 251 { 252 176, 253 144, 254 V4L2_PIX_FMT_SBGGR8, 255 V4L2_FIELD_NONE, 256 .sizeimage = 257 176 * 144, 258 .bytesperline = 176, 259 .colorspace = V4L2_COLORSPACE_SRGB, 260 .priv = 9 261 }, { 262 320, 263 240, 264 V4L2_PIX_FMT_SBGGR8, 265 V4L2_FIELD_NONE, 266 .sizeimage = 267 320 * 240, 268 .bytesperline = 320, 269 .colorspace = V4L2_COLORSPACE_SRGB, 270 .priv = 8 271 }, { 272 352, 273 288, 274 V4L2_PIX_FMT_SBGGR8, 275 V4L2_FIELD_NONE, 276 .sizeimage = 277 352 * 288, 278 .bytesperline = 352, 279 .colorspace = V4L2_COLORSPACE_SRGB, 280 .priv = 9 281 }, { 282 640, 283 480, 284 V4L2_PIX_FMT_SBGGR8, 285 V4L2_FIELD_NONE, 286 .sizeimage = 287 640 * 480, 288 .bytesperline = 640, 289 .colorspace = V4L2_COLORSPACE_SRGB, 290 .priv = 9 291 } 292 }; 293 294 static const struct v4l2_ctrl_ops ov9650_ctrl_ops = { 295 .s_ctrl = ov9650_s_ctrl, 296 }; 297 298 int ov9650_probe(struct sd *sd) 299 { 300 int err = 0; 301 u8 prod_id = 0, ver_id = 0, i; 302 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; 303 304 if (force_sensor) { 305 if (force_sensor == OV9650_SENSOR) { 306 pr_info("Forcing an %s sensor\n", ov9650.name); 307 goto sensor_found; 308 } 309 /* If we want to force another sensor, 310 don't try to probe this one */ 311 return -ENODEV; 312 } 313 314 gspca_dbg(gspca_dev, D_PROBE, "Probing for an ov9650 sensor\n"); 315 316 /* Run the pre-init before probing the sensor */ 317 for (i = 0; i < ARRAY_SIZE(preinit_ov9650) && !err; i++) { 318 u8 data = preinit_ov9650[i][2]; 319 if (preinit_ov9650[i][0] == SENSOR) 320 err = m5602_write_sensor(sd, 321 preinit_ov9650[i][1], &data, 1); 322 else 323 err = m5602_write_bridge(sd, 324 preinit_ov9650[i][1], data); 325 } 326 327 if (err < 0) 328 return err; 329 330 if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1)) 331 return -ENODEV; 332 333 if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1)) 334 return -ENODEV; 335 336 if ((prod_id == 0x96) && (ver_id == 0x52)) { 337 pr_info("Detected an ov9650 sensor\n"); 338 goto sensor_found; 339 } 340 return -ENODEV; 341 342 sensor_found: 343 sd->gspca_dev.cam.cam_mode = ov9650_modes; 344 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes); 345 346 return 0; 347 } 348 349 int ov9650_init(struct sd *sd) 350 { 351 int i, err = 0; 352 u8 data; 353 354 if (dump_sensor) 355 ov9650_dump_registers(sd); 356 357 for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) { 358 data = init_ov9650[i][2]; 359 if (init_ov9650[i][0] == SENSOR) 360 err = m5602_write_sensor(sd, init_ov9650[i][1], 361 &data, 1); 362 else 363 err = m5602_write_bridge(sd, init_ov9650[i][1], data); 364 } 365 366 return 0; 367 } 368 369 int ov9650_init_controls(struct sd *sd) 370 { 371 struct v4l2_ctrl_handler *hdl = &sd->gspca_dev.ctrl_handler; 372 373 sd->gspca_dev.vdev.ctrl_handler = hdl; 374 v4l2_ctrl_handler_init(hdl, 9); 375 376 sd->auto_white_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, 377 V4L2_CID_AUTO_WHITE_BALANCE, 378 0, 1, 1, 1); 379 sd->red_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, 380 V4L2_CID_RED_BALANCE, 0, 255, 1, 381 RED_GAIN_DEFAULT); 382 sd->blue_bal = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, 383 V4L2_CID_BLUE_BALANCE, 0, 255, 1, 384 BLUE_GAIN_DEFAULT); 385 386 sd->autoexpo = v4l2_ctrl_new_std_menu(hdl, &ov9650_ctrl_ops, 387 V4L2_CID_EXPOSURE_AUTO, 1, 0, V4L2_EXPOSURE_AUTO); 388 sd->expo = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_EXPOSURE, 389 0, 0x1ff, 4, EXPOSURE_DEFAULT); 390 391 sd->autogain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, 392 V4L2_CID_AUTOGAIN, 0, 1, 1, 1); 393 sd->gain = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_GAIN, 0, 394 0x3ff, 1, GAIN_DEFAULT); 395 396 sd->hflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_HFLIP, 397 0, 1, 1, 0); 398 sd->vflip = v4l2_ctrl_new_std(hdl, &ov9650_ctrl_ops, V4L2_CID_VFLIP, 399 0, 1, 1, 0); 400 401 if (hdl->error) { 402 pr_err("Could not initialize controls\n"); 403 return hdl->error; 404 } 405 406 v4l2_ctrl_auto_cluster(3, &sd->auto_white_bal, 0, false); 407 v4l2_ctrl_auto_cluster(2, &sd->autoexpo, 0, false); 408 v4l2_ctrl_auto_cluster(2, &sd->autogain, 0, false); 409 v4l2_ctrl_cluster(2, &sd->hflip); 410 411 return 0; 412 } 413 414 int ov9650_start(struct sd *sd) 415 { 416 u8 data; 417 int i, err = 0; 418 struct cam *cam = &sd->gspca_dev.cam; 419 420 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width; 421 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height; 422 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv; 423 int hor_offs = OV9650_LEFT_OFFSET; 424 struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; 425 426 if ((!dmi_check_system(ov9650_flip_dmi_table) && 427 sd->vflip->val) || 428 (dmi_check_system(ov9650_flip_dmi_table) && 429 !sd->vflip->val)) 430 ver_offs--; 431 432 if (width <= 320) 433 hor_offs /= 2; 434 435 /* Synthesize the vsync/hsync setup */ 436 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) { 437 if (res_init_ov9650[i][0] == BRIDGE) 438 err = m5602_write_bridge(sd, res_init_ov9650[i][1], 439 res_init_ov9650[i][2]); 440 else if (res_init_ov9650[i][0] == SENSOR) { 441 data = res_init_ov9650[i][2]; 442 err = m5602_write_sensor(sd, 443 res_init_ov9650[i][1], &data, 1); 444 } 445 } 446 if (err < 0) 447 return err; 448 449 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 450 ((ver_offs >> 8) & 0xff)); 451 if (err < 0) 452 return err; 453 454 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff)); 455 if (err < 0) 456 return err; 457 458 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); 459 if (err < 0) 460 return err; 461 462 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff); 463 if (err < 0) 464 return err; 465 466 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff)); 467 if (err < 0) 468 return err; 469 470 for (i = 0; i < 2 && !err; i++) 471 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0); 472 if (err < 0) 473 return err; 474 475 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); 476 if (err < 0) 477 return err; 478 479 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 2); 480 if (err < 0) 481 return err; 482 483 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 484 (hor_offs >> 8) & 0xff); 485 if (err < 0) 486 return err; 487 488 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, hor_offs & 0xff); 489 if (err < 0) 490 return err; 491 492 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 493 ((width + hor_offs) >> 8) & 0xff); 494 if (err < 0) 495 return err; 496 497 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, 498 ((width + hor_offs) & 0xff)); 499 if (err < 0) 500 return err; 501 502 err = m5602_write_bridge(sd, M5602_XB_SIG_INI, 0); 503 if (err < 0) 504 return err; 505 506 switch (width) { 507 case 640: 508 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for VGA mode\n"); 509 510 data = OV9650_VGA_SELECT | OV9650_RGB_SELECT | 511 OV9650_RAW_RGB_SELECT; 512 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); 513 break; 514 515 case 352: 516 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for CIF mode\n"); 517 518 data = OV9650_CIF_SELECT | OV9650_RGB_SELECT | 519 OV9650_RAW_RGB_SELECT; 520 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); 521 break; 522 523 case 320: 524 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for QVGA mode\n"); 525 526 data = OV9650_QVGA_SELECT | OV9650_RGB_SELECT | 527 OV9650_RAW_RGB_SELECT; 528 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); 529 break; 530 531 case 176: 532 gspca_dbg(gspca_dev, D_CONF, "Configuring camera for QCIF mode\n"); 533 534 data = OV9650_QCIF_SELECT | OV9650_RGB_SELECT | 535 OV9650_RAW_RGB_SELECT; 536 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1); 537 break; 538 } 539 return err; 540 } 541 542 int ov9650_stop(struct sd *sd) 543 { 544 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X; 545 return m5602_write_sensor(sd, OV9650_COM2, &data, 1); 546 } 547 548 void ov9650_disconnect(struct sd *sd) 549 { 550 ov9650_stop(sd); 551 552 sd->sensor = NULL; 553 } 554 555 static int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val) 556 { 557 struct sd *sd = (struct sd *) gspca_dev; 558 u8 i2c_data; 559 int err; 560 561 gspca_dbg(gspca_dev, D_CONF, "Set exposure to %d\n", val); 562 563 /* The 6 MSBs */ 564 i2c_data = (val >> 10) & 0x3f; 565 err = m5602_write_sensor(sd, OV9650_AECHM, 566 &i2c_data, 1); 567 if (err < 0) 568 return err; 569 570 /* The 8 middle bits */ 571 i2c_data = (val >> 2) & 0xff; 572 err = m5602_write_sensor(sd, OV9650_AECH, 573 &i2c_data, 1); 574 if (err < 0) 575 return err; 576 577 /* The 2 LSBs */ 578 i2c_data = val & 0x03; 579 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1); 580 return err; 581 } 582 583 static int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val) 584 { 585 int err; 586 u8 i2c_data; 587 struct sd *sd = (struct sd *) gspca_dev; 588 589 gspca_dbg(gspca_dev, D_CONF, "Setting gain to %d\n", val); 590 591 /* The 2 MSB */ 592 /* Read the OV9650_VREF register first to avoid 593 corrupting the VREF high and low bits */ 594 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1); 595 if (err < 0) 596 return err; 597 598 /* Mask away all uninteresting bits */ 599 i2c_data = ((val & 0x0300) >> 2) | 600 (i2c_data & 0x3f); 601 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1); 602 if (err < 0) 603 return err; 604 605 /* The 8 LSBs */ 606 i2c_data = val & 0xff; 607 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1); 608 return err; 609 } 610 611 static int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val) 612 { 613 int err; 614 u8 i2c_data; 615 struct sd *sd = (struct sd *) gspca_dev; 616 617 gspca_dbg(gspca_dev, D_CONF, "Set red gain to %d\n", val); 618 619 i2c_data = val & 0xff; 620 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1); 621 return err; 622 } 623 624 static int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val) 625 { 626 int err; 627 u8 i2c_data; 628 struct sd *sd = (struct sd *) gspca_dev; 629 630 gspca_dbg(gspca_dev, D_CONF, "Set blue gain to %d\n", val); 631 632 i2c_data = val & 0xff; 633 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1); 634 return err; 635 } 636 637 static int ov9650_set_hvflip(struct gspca_dev *gspca_dev) 638 { 639 int err; 640 u8 i2c_data; 641 struct sd *sd = (struct sd *) gspca_dev; 642 int hflip = sd->hflip->val; 643 int vflip = sd->vflip->val; 644 645 gspca_dbg(gspca_dev, D_CONF, "Set hvflip to %d %d\n", hflip, vflip); 646 647 if (dmi_check_system(ov9650_flip_dmi_table)) 648 vflip = !vflip; 649 650 i2c_data = (hflip << 5) | (vflip << 4); 651 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); 652 if (err < 0) 653 return err; 654 655 /* When vflip is toggled we need to readjust the bridge hsync/vsync */ 656 if (gspca_dev->streaming) 657 err = ov9650_start(sd); 658 659 return err; 660 } 661 662 static int ov9650_set_auto_exposure(struct gspca_dev *gspca_dev, 663 __s32 val) 664 { 665 int err; 666 u8 i2c_data; 667 struct sd *sd = (struct sd *) gspca_dev; 668 669 gspca_dbg(gspca_dev, D_CONF, "Set auto exposure control to %d\n", val); 670 671 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); 672 if (err < 0) 673 return err; 674 675 val = (val == V4L2_EXPOSURE_AUTO); 676 i2c_data = ((i2c_data & 0xfe) | ((val & 0x01) << 0)); 677 678 return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); 679 } 680 681 static int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, 682 __s32 val) 683 { 684 int err; 685 u8 i2c_data; 686 struct sd *sd = (struct sd *) gspca_dev; 687 688 gspca_dbg(gspca_dev, D_CONF, "Set auto white balance to %d\n", val); 689 690 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); 691 if (err < 0) 692 return err; 693 694 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1)); 695 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); 696 697 return err; 698 } 699 700 static int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val) 701 { 702 int err; 703 u8 i2c_data; 704 struct sd *sd = (struct sd *) gspca_dev; 705 706 gspca_dbg(gspca_dev, D_CONF, "Set auto gain control to %d\n", val); 707 708 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1); 709 if (err < 0) 710 return err; 711 712 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2)); 713 714 return m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1); 715 } 716 717 static int ov9650_s_ctrl(struct v4l2_ctrl *ctrl) 718 { 719 struct gspca_dev *gspca_dev = 720 container_of(ctrl->handler, struct gspca_dev, ctrl_handler); 721 struct sd *sd = (struct sd *) gspca_dev; 722 int err; 723 724 if (!gspca_dev->streaming) 725 return 0; 726 727 switch (ctrl->id) { 728 case V4L2_CID_AUTO_WHITE_BALANCE: 729 err = ov9650_set_auto_white_balance(gspca_dev, ctrl->val); 730 if (err || ctrl->val) 731 return err; 732 err = ov9650_set_red_balance(gspca_dev, sd->red_bal->val); 733 if (err) 734 return err; 735 err = ov9650_set_blue_balance(gspca_dev, sd->blue_bal->val); 736 break; 737 case V4L2_CID_EXPOSURE_AUTO: 738 err = ov9650_set_auto_exposure(gspca_dev, ctrl->val); 739 if (err || ctrl->val == V4L2_EXPOSURE_AUTO) 740 return err; 741 err = ov9650_set_exposure(gspca_dev, sd->expo->val); 742 break; 743 case V4L2_CID_AUTOGAIN: 744 err = ov9650_set_auto_gain(gspca_dev, ctrl->val); 745 if (err || ctrl->val) 746 return err; 747 err = ov9650_set_gain(gspca_dev, sd->gain->val); 748 break; 749 case V4L2_CID_HFLIP: 750 err = ov9650_set_hvflip(gspca_dev); 751 break; 752 default: 753 return -EINVAL; 754 } 755 756 return err; 757 } 758 759 static void ov9650_dump_registers(struct sd *sd) 760 { 761 int address; 762 pr_info("Dumping the ov9650 register state\n"); 763 for (address = 0; address < 0xa9; address++) { 764 u8 value; 765 m5602_read_sensor(sd, address, &value, 1); 766 pr_info("register 0x%x contains 0x%x\n", address, value); 767 } 768 769 pr_info("ov9650 register state dump complete\n"); 770 771 pr_info("Probing for which registers that are read/write\n"); 772 for (address = 0; address < 0xff; address++) { 773 u8 old_value, ctrl_value; 774 u8 test_value[2] = {0xff, 0xff}; 775 776 m5602_read_sensor(sd, address, &old_value, 1); 777 m5602_write_sensor(sd, address, test_value, 1); 778 m5602_read_sensor(sd, address, &ctrl_value, 1); 779 780 if (ctrl_value == test_value[0]) 781 pr_info("register 0x%x is writeable\n", address); 782 else 783 pr_info("register 0x%x is read only\n", address); 784 785 /* Restore original value */ 786 m5602_write_sensor(sd, address, &old_value, 1); 787 } 788 } 789