drivers/media/video/noon010pc30.c

   1 /*
   2  * Driver for SiliconFile NOON010PC30 CIF (1/11") Image Sensor with ISP
   3  *
   4  * Copyright (C) 2010 Samsung Electronics
   5  * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com>
   6  *
   7  * Initial register configuration based on a driver authored by
   8  * HeungJun Kim <riverful.kim@samsung.com>.
   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 vergsion.
  14  */
  15
  16 #include <linux/delay.h>
  17 #include <linux/gpio.h>
  18 #include <linux/i2c.h>
  19 #include <linux/slab.h>
  20 #include <linux/regulator/consumer.h>
  21 #include <media/noon010pc30.h>
  22 #include <media/v4l2-chip-ident.h>
  23 #include <linux/videodev2.h>
  24 #include <linux/module.h>
  25 #include <media/v4l2-ctrls.h>
  26 #include <media/v4l2-device.h>
  27 #include <media/v4l2-mediabus.h>
  28 #include <media/v4l2-subdev.h>
  29
  30 static int debug;
  31 module_param(debug, int, 0644);
  32 MODULE_PARM_DESC(debug, "Enable module debug trace. Set to 1 to enable.");
  33
  34 #define MODULE_NAME             "NOON010PC30"
  35
  36 /*
  37  * Register offsets within a page
  38  * b15..b8 - page id, b7..b0 - register address
  39  */
  40 #define POWER_CTRL_REG          0x0001
  41 #define PAGEMODE_REG            0x03
  42 #define DEVICE_ID_REG           0x0004
  43 #define NOON010PC30_ID          0x86
  44 #define VDO_CTL_REG(n)          (0x0010 + (n))
  45 #define SYNC_CTL_REG            0x0012
  46 /* Window size and position */
  47 #define WIN_ROWH_REG            0x0013
  48 #define WIN_ROWL_REG            0x0014
  49 #define WIN_COLH_REG            0x0015
  50 #define WIN_COLL_REG            0x0016
  51 #define WIN_HEIGHTH_REG         0x0017
  52 #define WIN_HEIGHTL_REG         0x0018
  53 #define WIN_WIDTHH_REG          0x0019
  54 #define WIN_WIDTHL_REG          0x001A
  55 #define HBLANKH_REG             0x001B
  56 #define HBLANKL_REG             0x001C
  57 #define VSYNCH_REG              0x001D
  58 #define VSYNCL_REG              0x001E
  59 /* VSYNC control */
  60 #define VS_CTL_REG(n)           (0x00A1 + (n))
  61 /* page 1 */
  62 #define ISP_CTL_REG(n)          (0x0110 + (n))
  63 #define YOFS_REG                0x0119
  64 #define DARK_YOFS_REG           0x011A
  65 #define SAT_CTL_REG             0x0120
  66 #define BSAT_REG                0x0121
  67 #define RSAT_REG                0x0122
  68 /* Color correction */
  69 #define CMC_CTL_REG             0x0130
  70 #define CMC_OFSGH_REG           0x0133
  71 #define CMC_OFSGL_REG           0x0135
  72 #define CMC_SIGN_REG            0x0136
  73 #define CMC_GOFS_REG            0x0137
  74 #define CMC_COEF_REG(n)         (0x0138 + (n))
  75 #define CMC_OFS_REG(n)          (0x0141 + (n))
  76 /* Gamma correction */
  77 #define GMA_CTL_REG             0x0160
  78 #define GMA_COEF_REG(n)         (0x0161 + (n))
  79 /* Lens Shading */
  80 #define LENS_CTRL_REG           0x01D0
  81 #define LENS_XCEN_REG           0x01D1
  82 #define LENS_YCEN_REG           0x01D2
  83 #define LENS_RC_REG             0x01D3
  84 #define LENS_GC_REG             0x01D4
  85 #define LENS_BC_REG             0x01D5
  86 #define L_AGON_REG              0x01D6
  87 #define L_AGOFF_REG             0x01D7
  88 /* Page 3 - Auto Exposure */
  89 #define AE_CTL_REG(n)           (0x0310 + (n))
  90 #define AE_CTL9_REG             0x032C
  91 #define AE_CTL10_REG            0x032D
  92 #define AE_YLVL_REG             0x031C
  93 #define AE_YTH_REG(n)           (0x031D + (n))
  94 #define AE_WGT_REG              0x0326
  95 #define EXP_TIMEH_REG           0x0333
  96 #define EXP_TIMEM_REG           0x0334
  97 #define EXP_TIMEL_REG           0x0335
  98 #define EXP_MMINH_REG           0x0336
  99 #define EXP_MMINL_REG           0x0337
 100 #define EXP_MMAXH_REG           0x0338
 101 #define EXP_MMAXM_REG           0x0339
 102 #define EXP_MMAXL_REG           0x033A
 103 /* Page 4 - Auto White Balance */
 104 #define AWB_CTL_REG(n)          (0x0410 + (n))
 105 #define AWB_ENABE               0x80
 106 #define AWB_WGHT_REG            0x0419
 107 #define BGAIN_PAR_REG(n)        (0x044F + (n))
 108 /* Manual white balance, when AWB_CTL2[0]=1 */
 109 #define MWB_RGAIN_REG           0x0466
 110 #define MWB_BGAIN_REG           0x0467
 111
 112 /* The token to mark an array end */
 113 #define REG_TERM                0xFFFF
 114
 115 struct noon010_format {
 116         enum v4l2_mbus_pixelcode code;
 117         enum v4l2_colorspace colorspace;
 118         u16 ispctl1_reg;
 119 };
 120
 121 struct noon010_frmsize {
 122         u16 width;
 123         u16 height;
 124         int vid_ctl1;
 125 };
 126
 127 static const char * const noon010_supply_name[] = {
 128         "vdd_core", "vddio", "vdda"
 129 };
 130
 131 #define NOON010_NUM_SUPPLIES ARRAY_SIZE(noon010_supply_name)
 132
 133 struct noon010_info {
 134         struct v4l2_subdev sd;
 135         struct v4l2_ctrl_handler hdl;
 136         const struct noon010pc30_platform_data *pdata;
 137         const struct noon010_format *curr_fmt;
 138         const struct noon010_frmsize *curr_win;
 139         unsigned int hflip:1;
 140         unsigned int vflip:1;
 141         unsigned int power:1;
 142         u8 i2c_reg_page;
 143         struct regulator_bulk_data supply[NOON010_NUM_SUPPLIES];
 144         u32 gpio_nreset;
 145         u32 gpio_nstby;
 146 };
 147
 148 struct i2c_regval {
 149         u16 addr;
 150         u16 val;
 151 };
 152
 153 /* Supported resolutions. */
 154 static const struct noon010_frmsize noon010_sizes[] = {
 155         {
 156                 .width          = 352,
 157                 .height         = 288,
 158                 .vid_ctl1       = 0,
 159         }, {
 160                 .width          = 176,
 161                 .height         = 144,
 162                 .vid_ctl1       = 0x10,
 163         }, {
 164                 .width          = 88,
 165                 .height         = 72,
 166                 .vid_ctl1       = 0x20,
 167         },
 168 };
 169
 170 /* Supported pixel formats. */
 171 static const struct noon010_format noon010_formats[] = {
 172         {
 173                 .code           = V4L2_MBUS_FMT_YUYV8_2X8,
 174                 .colorspace     = V4L2_COLORSPACE_JPEG,
 175                 .ispctl1_reg    = 0x03,
 176         }, {
 177                 .code           = V4L2_MBUS_FMT_YVYU8_2X8,
 178                 .colorspace     = V4L2_COLORSPACE_JPEG,
 179                 .ispctl1_reg    = 0x02,
 180         }, {
 181                 .code           = V4L2_MBUS_FMT_VYUY8_2X8,
 182                 .colorspace     = V4L2_COLORSPACE_JPEG,
 183                 .ispctl1_reg    = 0,
 184         }, {
 185                 .code           = V4L2_MBUS_FMT_UYVY8_2X8,
 186                 .colorspace     = V4L2_COLORSPACE_JPEG,
 187                 .ispctl1_reg    = 0x01,
 188         }, {
 189                 .code           = V4L2_MBUS_FMT_RGB565_2X8_BE,
 190                 .colorspace     = V4L2_COLORSPACE_JPEG,
 191                 .ispctl1_reg    = 0x40,
 192         },
 193 };
 194
 195 static const struct i2c_regval noon010_base_regs[] = {
 196         { WIN_COLL_REG,         0x06 }, { HBLANKL_REG,          0x7C },
 197         /* Color corection and saturation */
 198         { ISP_CTL_REG(0),       0x30 }, { ISP_CTL_REG(2),       0x30 },
 199         { YOFS_REG,             0x80 }, { DARK_YOFS_REG,        0x04 },
 200         { SAT_CTL_REG,          0x1F }, { BSAT_REG,             0x90 },
 201         { CMC_CTL_REG,          0x0F }, { CMC_OFSGH_REG,        0x3C },
 202         { CMC_OFSGL_REG,        0x2C }, { CMC_SIGN_REG,         0x3F },
 203         { CMC_COEF_REG(0),      0x79 }, { CMC_OFS_REG(0),       0x00 },
 204         { CMC_COEF_REG(1),      0x39 }, { CMC_OFS_REG(1),       0x00 },
 205         { CMC_COEF_REG(2),      0x00 }, { CMC_OFS_REG(2),       0x00 },
 206         { CMC_COEF_REG(3),      0x11 }, { CMC_OFS_REG(3),       0x8B },
 207         { CMC_COEF_REG(4),      0x65 }, { CMC_OFS_REG(4),       0x07 },
 208         { CMC_COEF_REG(5),      0x14 }, { CMC_OFS_REG(5),       0x04 },
 209         { CMC_COEF_REG(6),      0x01 }, { CMC_OFS_REG(6),       0x9C },
 210         { CMC_COEF_REG(7),      0x33 }, { CMC_OFS_REG(7),       0x89 },
 211         { CMC_COEF_REG(8),      0x74 }, { CMC_OFS_REG(8),       0x25 },
 212         /* Automatic white balance */
 213         { AWB_CTL_REG(0),       0x78 }, { AWB_CTL_REG(1),       0x2E },
 214         { AWB_CTL_REG(2),       0x20 }, { AWB_CTL_REG(3),       0x85 },
 215         /* Auto exposure */
 216         { AE_CTL_REG(0),        0xDC }, { AE_CTL_REG(1),        0x81 },
 217         { AE_CTL_REG(2),        0x30 }, { AE_CTL_REG(3),        0xA5 },
 218         { AE_CTL_REG(4),        0x40 }, { AE_CTL_REG(5),        0x51 },
 219         { AE_CTL_REG(6),        0x33 }, { AE_CTL_REG(7),        0x7E },
 220         { AE_CTL9_REG,          0x00 }, { AE_CTL10_REG,         0x02 },
 221         { AE_YLVL_REG,          0x44 }, { AE_YTH_REG(0),        0x34 },
 222         { AE_YTH_REG(1),        0x30 }, { AE_WGT_REG,           0xD5 },
 223         /* Lens shading compensation */
 224         { LENS_CTRL_REG,        0x01 }, { LENS_XCEN_REG,        0x80 },
 225         { LENS_YCEN_REG,        0x70 }, { LENS_RC_REG,          0x53 },
 226         { LENS_GC_REG,          0x40 }, { LENS_BC_REG,          0x3E },
 227         { REG_TERM,             0 },
 228 };
 229
 230 static inline struct noon010_info *to_noon010(struct v4l2_subdev *sd)
 231 {
 232         return container_of(sd, struct noon010_info, sd);
 233 }
 234
 235 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
 236 {
 237         return &container_of(ctrl->handler, struct noon010_info, hdl)->sd;
 238 }
 239
 240 static inline int set_i2c_page(struct noon010_info *info,
 241                                struct i2c_client *client, unsigned int reg)
 242 {
 243         u32 page = reg >> 8 & 0xFF;
 244         int ret = 0;
 245
 246         if (info->i2c_reg_page != page && (reg & 0xFF) != 0x03) {
 247                 ret = i2c_smbus_write_byte_data(client, PAGEMODE_REG, page);
 248                 if (!ret)
 249                         info->i2c_reg_page = page;
 250         }
 251         return ret;
 252 }
 253
 254 static int cam_i2c_read(struct v4l2_subdev *sd, u32 reg_addr)
 255 {
 256         struct i2c_client *client = v4l2_get_subdevdata(sd);
 257         struct noon010_info *info = to_noon010(sd);
 258         int ret = set_i2c_page(info, client, reg_addr);
 259
 260         if (ret)
 261                 return ret;
 262         return i2c_smbus_read_byte_data(client, reg_addr & 0xFF);
 263 }
 264
 265 static int cam_i2c_write(struct v4l2_subdev *sd, u32 reg_addr, u32 val)
 266 {
 267         struct i2c_client *client = v4l2_get_subdevdata(sd);
 268         struct noon010_info *info = to_noon010(sd);
 269         int ret = set_i2c_page(info, client, reg_addr);
 270
 271         if (ret)
 272                 return ret;
 273         return i2c_smbus_write_byte_data(client, reg_addr & 0xFF, val);
 274 }
 275
 276 static inline int noon010_bulk_write_reg(struct v4l2_subdev *sd,
 277                                          const struct i2c_regval *msg)
 278 {
 279         while (msg->addr != REG_TERM) {
 280                 int ret = cam_i2c_write(sd, msg->addr, msg->val);
 281
 282                 if (ret)
 283                         return ret;
 284                 msg++;
 285         }
 286         return 0;
 287 }
 288
 289 /* Device reset and sleep mode control */
 290 static int noon010_power_ctrl(struct v4l2_subdev *sd, bool reset, bool sleep)
 291 {
 292         struct noon010_info *info = to_noon010(sd);
 293         u8 reg = sleep ? 0xF1 : 0xF0;
 294         int ret = 0;
 295
 296         if (reset)
 297                 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg | 0x02);
 298         if (!ret) {
 299                 ret = cam_i2c_write(sd, POWER_CTRL_REG, reg);
 300                 if (reset && !ret)
 301                         info->i2c_reg_page = -1;
 302         }
 303         return ret;
 304 }
 305
 306 /* Automatic white balance control */
 307 static int noon010_enable_autowhitebalance(struct v4l2_subdev *sd, int on)
 308 {
 309         int ret;
 310
 311         ret = cam_i2c_write(sd, AWB_CTL_REG(1), on ? 0x2E : 0x2F);
 312         if (!ret)
 313                 ret = cam_i2c_write(sd, AWB_CTL_REG(0), on ? 0xFB : 0x7B);
 314         return ret;
 315 }
 316
 317 static int noon010_set_flip(struct v4l2_subdev *sd, int hflip, int vflip)
 318 {
 319         struct noon010_info *info = to_noon010(sd);
 320         int reg, ret;
 321
 322         reg = cam_i2c_read(sd, VDO_CTL_REG(1));
 323         if (reg < 0)
 324                 return reg;
 325
 326         reg &= 0x7C;
 327         if (hflip)
 328                 reg |= 0x01;
 329         if (vflip)
 330                 reg |= 0x02;
 331
 332         ret = cam_i2c_write(sd, VDO_CTL_REG(1), reg | 0x80);
 333         if (!ret) {
 334                 info->hflip = hflip;
 335                 info->vflip = vflip;
 336         }
 337         return ret;
 338 }
 339
 340 /* Configure resolution and color format */
 341 static int noon010_set_params(struct v4l2_subdev *sd)
 342 {
 343         struct noon010_info *info = to_noon010(sd);
 344         int ret;
 345
 346         if (!info->curr_win)
 347                 return -EINVAL;
 348
 349         ret = cam_i2c_write(sd, VDO_CTL_REG(0), info->curr_win->vid_ctl1);
 350
 351         if (!ret && info->curr_fmt)
 352                 ret = cam_i2c_write(sd, ISP_CTL_REG(0),
 353                                 info->curr_fmt->ispctl1_reg);
 354         return ret;
 355 }
 356
 357 /* Find nearest matching image pixel size. */
 358 static int noon010_try_frame_size(struct v4l2_mbus_framefmt *mf)
 359 {
 360         unsigned int min_err = ~0;
 361         int i = ARRAY_SIZE(noon010_sizes);
 362         const struct noon010_frmsize *fsize = &noon010_sizes[0],
 363                 *match = NULL;
 364
 365         while (i--) {
 366                 int err = abs(fsize->width - mf->width)
 367                                 + abs(fsize->height - mf->height);
 368
 369                 if (err < min_err) {
 370                         min_err = err;
 371                         match = fsize;
 372                 }
 373                 fsize++;
 374         }
 375         if (match) {
 376                 mf->width  = match->width;
 377                 mf->height = match->height;
 378                 return 0;
 379         }
 380         return -EINVAL;
 381 }
 382
 383 static int power_enable(struct noon010_info *info)
 384 {
 385         int ret;
 386
 387         if (info->power) {
 388                 v4l2_info(&info->sd, "%s: sensor is already on\n", __func__);
 389                 return 0;
 390         }
 391
 392         if (gpio_is_valid(info->gpio_nstby))
 393                 gpio_set_value(info->gpio_nstby, 0);
 394
 395         if (gpio_is_valid(info->gpio_nreset))
 396                 gpio_set_value(info->gpio_nreset, 0);
 397
 398         ret = regulator_bulk_enable(NOON010_NUM_SUPPLIES, info->supply);
 399         if (ret)
 400                 return ret;
 401
 402         if (gpio_is_valid(info->gpio_nreset)) {
 403                 msleep(50);
 404                 gpio_set_value(info->gpio_nreset, 1);
 405         }
 406         if (gpio_is_valid(info->gpio_nstby)) {
 407                 udelay(1000);
 408                 gpio_set_value(info->gpio_nstby, 1);
 409         }
 410         if (gpio_is_valid(info->gpio_nreset)) {
 411                 udelay(1000);
 412                 gpio_set_value(info->gpio_nreset, 0);
 413                 msleep(100);
 414                 gpio_set_value(info->gpio_nreset, 1);
 415                 msleep(20);
 416         }
 417         info->power = 1;
 418
 419         v4l2_dbg(1, debug, &info->sd,  "%s: sensor is on\n", __func__);
 420         return 0;
 421 }
 422
 423 static int power_disable(struct noon010_info *info)
 424 {
 425         int ret;
 426
 427         if (!info->power) {
 428                 v4l2_info(&info->sd, "%s: sensor is already off\n", __func__);
 429                 return 0;
 430         }
 431
 432         ret = regulator_bulk_disable(NOON010_NUM_SUPPLIES, info->supply);
 433         if (ret)
 434                 return ret;
 435
 436         if (gpio_is_valid(info->gpio_nstby))
 437                 gpio_set_value(info->gpio_nstby, 0);
 438
 439         if (gpio_is_valid(info->gpio_nreset))
 440                 gpio_set_value(info->gpio_nreset, 0);
 441
 442         info->power = 0;
 443
 444         v4l2_dbg(1, debug, &info->sd,  "%s: sensor is off\n", __func__);
 445
 446         return 0;
 447 }
 448
 449 static int noon010_s_ctrl(struct v4l2_ctrl *ctrl)
 450 {
 451         struct v4l2_subdev *sd = to_sd(ctrl);
 452
 453         v4l2_dbg(1, debug, sd, "%s: ctrl_id: %d, value: %d\n",
 454                  __func__, ctrl->id, ctrl->val);
 455
 456         switch (ctrl->id) {
 457         case V4L2_CID_AUTO_WHITE_BALANCE:
 458                 return noon010_enable_autowhitebalance(sd, ctrl->val);
 459         case V4L2_CID_BLUE_BALANCE:
 460                 return cam_i2c_write(sd, MWB_BGAIN_REG, ctrl->val);
 461         case V4L2_CID_RED_BALANCE:
 462                 return cam_i2c_write(sd, MWB_RGAIN_REG, ctrl->val);
 463         default:
 464                 return -EINVAL;
 465         }
 466 }
 467
 468 static int noon010_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
 469                             enum v4l2_mbus_pixelcode *code)
 470 {
 471         if (!code || index >= ARRAY_SIZE(noon010_formats))
 472                 return -EINVAL;
 473
 474         *code = noon010_formats[index].code;
 475         return 0;
 476 }
 477
 478 static int noon010_g_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mf)
 479 {
 480         struct noon010_info *info = to_noon010(sd);
 481         int ret;
 482
 483         if (!mf)
 484                 return -EINVAL;
 485
 486         if (!info->curr_win || !info->curr_fmt) {
 487                 ret = noon010_set_params(sd);
 488                 if (ret)
 489                         return ret;
 490         }
 491
 492         mf->width       = info->curr_win->width;
 493         mf->height      = info->curr_win->height;
 494         mf->code        = info->curr_fmt->code;
 495         mf->colorspace  = info->curr_fmt->colorspace;
 496         mf->field       = V4L2_FIELD_NONE;
 497
 498         return 0;
 499 }
 500
 501 /* Return nearest media bus frame format. */
 502 static const struct noon010_format *try_fmt(struct v4l2_subdev *sd,
 503                                             struct v4l2_mbus_framefmt *mf)
 504 {
 505         int i = ARRAY_SIZE(noon010_formats);
 506
 507         noon010_try_frame_size(mf);
 508
 509         while (i--)
 510                 if (mf->code == noon010_formats[i].code)
 511                         break;
 512
 513         mf->code = noon010_formats[i].code;
 514
 515         return &noon010_formats[i];
 516 }
 517
 518 static int noon010_try_fmt(struct v4l2_subdev *sd,
 519                            struct v4l2_mbus_framefmt *mf)
 520 {
 521         if (!sd || !mf)
 522                 return -EINVAL;
 523
 524         try_fmt(sd, mf);
 525         return 0;
 526 }
 527
 528 static int noon010_s_fmt(struct v4l2_subdev *sd,
 529                          struct v4l2_mbus_framefmt *mf)
 530 {
 531         struct noon010_info *info = to_noon010(sd);
 532
 533         if (!sd || !mf)
 534                 return -EINVAL;
 535
 536         info->curr_fmt = try_fmt(sd, mf);
 537
 538         return noon010_set_params(sd);
 539 }
 540
 541 static int noon010_base_config(struct v4l2_subdev *sd)
 542 {
 543         struct noon010_info *info = to_noon010(sd);
 544         int ret;
 545
 546         ret = noon010_bulk_write_reg(sd, noon010_base_regs);
 547         if (!ret) {
 548                 info->curr_fmt = &noon010_formats[0];
 549                 info->curr_win = &noon010_sizes[0];
 550                 ret = noon010_set_params(sd);
 551         }
 552         if (!ret)
 553                 ret = noon010_set_flip(sd, 1, 0);
 554         if (!ret)
 555                 ret = noon010_power_ctrl(sd, false, false);
 556
 557         /* sync the handler and the registers state */
 558         v4l2_ctrl_handler_setup(&to_noon010(sd)->hdl);
 559         return ret;
 560 }
 561
 562 static int noon010_s_power(struct v4l2_subdev *sd, int on)
 563 {
 564         struct noon010_info *info = to_noon010(sd);
 565         const struct noon010pc30_platform_data *pdata = info->pdata;
 566         int ret = 0;
 567
 568         if (WARN(pdata == NULL, "No platform data!\n"))
 569                 return -ENOMEM;
 570
 571         if (on) {
 572                 ret = power_enable(info);
 573                 if (ret)
 574                         return ret;
 575                 ret = noon010_base_config(sd);
 576         } else {
 577                 noon010_power_ctrl(sd, false, true);
 578                 ret = power_disable(info);
 579                 info->curr_win = NULL;
 580                 info->curr_fmt = NULL;
 581         }
 582
 583         return ret;
 584 }
 585
 586 static int noon010_g_chip_ident(struct v4l2_subdev *sd,
 587                                 struct v4l2_dbg_chip_ident *chip)
 588 {
 589         struct i2c_client *client = v4l2_get_subdevdata(sd);
 590
 591         return v4l2_chip_ident_i2c_client(client, chip,
 592                                           V4L2_IDENT_NOON010PC30, 0);
 593 }
 594
 595 static int noon010_log_status(struct v4l2_subdev *sd)
 596 {
 597         struct noon010_info *info = to_noon010(sd);
 598
 599         v4l2_ctrl_handler_log_status(&info->hdl, sd->name);
 600         return 0;
 601 }
 602
 603 static const struct v4l2_ctrl_ops noon010_ctrl_ops = {
 604         .s_ctrl = noon010_s_ctrl,
 605 };
 606
 607 static const struct v4l2_subdev_core_ops noon010_core_ops = {
 608         .g_chip_ident   = noon010_g_chip_ident,
 609         .s_power        = noon010_s_power,
 610         .g_ctrl         = v4l2_subdev_g_ctrl,
 611         .s_ctrl         = v4l2_subdev_s_ctrl,
 612         .queryctrl      = v4l2_subdev_queryctrl,
 613         .querymenu      = v4l2_subdev_querymenu,
 614         .g_ext_ctrls    = v4l2_subdev_g_ext_ctrls,
 615         .try_ext_ctrls  = v4l2_subdev_try_ext_ctrls,
 616         .s_ext_ctrls    = v4l2_subdev_s_ext_ctrls,
 617         .log_status     = noon010_log_status,
 618 };
 619
 620 static const struct v4l2_subdev_video_ops noon010_video_ops = {
 621         .g_mbus_fmt     = noon010_g_fmt,
 622         .s_mbus_fmt     = noon010_s_fmt,
 623         .try_mbus_fmt   = noon010_try_fmt,
 624         .enum_mbus_fmt  = noon010_enum_fmt,
 625 };
 626
 627 static const struct v4l2_subdev_ops noon010_ops = {
 628         .core   = &noon010_core_ops,
 629         .video  = &noon010_video_ops,
 630 };
 631
 632 /* Return 0 if NOON010PC30L sensor type was detected or -ENODEV otherwise. */
 633 static int noon010_detect(struct i2c_client *client, struct noon010_info *info)
 634 {
 635         int ret;
 636
 637         ret = power_enable(info);
 638         if (ret)
 639                 return ret;
 640
 641         ret = i2c_smbus_read_byte_data(client, DEVICE_ID_REG);
 642         if (ret < 0)
 643                 dev_err(&client->dev, "I2C read failed: 0x%X\n", ret);
 644
 645         power_disable(info);
 646
 647         return ret == NOON010PC30_ID ? 0 : -ENODEV;
 648 }
 649
 650 static int noon010_probe(struct i2c_client *client,
 651                          const struct i2c_device_id *id)
 652 {
 653         struct noon010_info *info;
 654         struct v4l2_subdev *sd;
 655         const struct noon010pc30_platform_data *pdata
 656                 = client->dev.platform_data;
 657         int ret;
 658         int i;
 659
 660         if (!pdata) {
 661                 dev_err(&client->dev, "No platform data!\n");
 662                 return -EIO;
 663         }
 664
 665         info = kzalloc(sizeof(*info), GFP_KERNEL);
 666         if (!info)
 667                 return -ENOMEM;
 668
 669         sd = &info->sd;
 670         strlcpy(sd->name, MODULE_NAME, sizeof(sd->name));
 671         v4l2_i2c_subdev_init(sd, client, &noon010_ops);
 672
 673         v4l2_ctrl_handler_init(&info->hdl, 3);
 674
 675         v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
 676                           V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
 677         v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
 678                           V4L2_CID_RED_BALANCE, 0, 127, 1, 64);
 679         v4l2_ctrl_new_std(&info->hdl, &noon010_ctrl_ops,
 680                           V4L2_CID_BLUE_BALANCE, 0, 127, 1, 64);
 681
 682         sd->ctrl_handler = &info->hdl;
 683
 684         ret = info->hdl.error;
 685         if (ret)
 686                 goto np_err;
 687
 688         info->pdata             = client->dev.platform_data;
 689         info->i2c_reg_page      = -1;
 690         info->gpio_nreset       = -EINVAL;
 691         info->gpio_nstby        = -EINVAL;
 692
 693         if (gpio_is_valid(pdata->gpio_nreset)) {
 694                 ret = gpio_request(pdata->gpio_nreset, "NOON010PC30 NRST");
 695                 if (ret) {
 696                         dev_err(&client->dev, "GPIO request error: %d\n", ret);
 697                         goto np_err;
 698                 }
 699                 info->gpio_nreset = pdata->gpio_nreset;
 700                 gpio_direction_output(info->gpio_nreset, 0);
 701                 gpio_export(info->gpio_nreset, 0);
 702         }
 703
 704         if (gpio_is_valid(pdata->gpio_nstby)) {
 705                 ret = gpio_request(pdata->gpio_nstby, "NOON010PC30 NSTBY");
 706                 if (ret) {
 707                         dev_err(&client->dev, "GPIO request error: %d\n", ret);
 708                         goto np_gpio_err;
 709                 }
 710                 info->gpio_nstby = pdata->gpio_nstby;
 711                 gpio_direction_output(info->gpio_nstby, 0);
 712                 gpio_export(info->gpio_nstby, 0);
 713         }
 714
 715         for (i = 0; i < NOON010_NUM_SUPPLIES; i++)
 716                 info->supply[i].supply = noon010_supply_name[i];
 717
 718         ret = regulator_bulk_get(&client->dev, NOON010_NUM_SUPPLIES,
 719                                  info->supply);
 720         if (ret)
 721                 goto np_reg_err;
 722
 723         ret = noon010_detect(client, info);
 724         if (!ret)
 725                 return 0;
 726
 727         /* the sensor detection failed */
 728         regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
 729 np_reg_err:
 730         if (gpio_is_valid(info->gpio_nstby))
 731                 gpio_free(info->gpio_nstby);
 732 np_gpio_err:
 733         if (gpio_is_valid(info->gpio_nreset))
 734                 gpio_free(info->gpio_nreset);
 735 np_err:
 736         v4l2_ctrl_handler_free(&info->hdl);
 737         v4l2_device_unregister_subdev(sd);
 738         kfree(info);
 739         return ret;
 740 }
 741
 742 static int noon010_remove(struct i2c_client *client)
 743 {
 744         struct v4l2_subdev *sd = i2c_get_clientdata(client);
 745         struct noon010_info *info = to_noon010(sd);
 746
 747         v4l2_device_unregister_subdev(sd);
 748         v4l2_ctrl_handler_free(&info->hdl);
 749
 750         regulator_bulk_free(NOON010_NUM_SUPPLIES, info->supply);
 751
 752         if (gpio_is_valid(info->gpio_nreset))
 753                 gpio_free(info->gpio_nreset);
 754
 755         if (gpio_is_valid(info->gpio_nstby))
 756                 gpio_free(info->gpio_nstby);
 757
 758         kfree(info);
 759         return 0;
 760 }
 761
 762 static const struct i2c_device_id noon010_id[] = {
 763         { MODULE_NAME, 0 },
 764         { },
 765 };
 766 MODULE_DEVICE_TABLE(i2c, noon010_id);
 767
 768
 769 static struct i2c_driver noon010_i2c_driver = {
 770         .driver = {
 771                 .name = MODULE_NAME
 772         },
 773         .probe          = noon010_probe,
 774         .remove         = noon010_remove,
 775         .id_table       = noon010_id,
 776 };
 777
 778 static int __init noon010_init(void)
 779 {
 780         return i2c_add_driver(&noon010_i2c_driver);
 781 }
 782
 783 static void __exit noon010_exit(void)
 784 {
 785         i2c_del_driver(&noon010_i2c_driver);
 786 }
 787
 788 module_init(noon010_init);
 789 module_exit(noon010_exit);
 790
 791 MODULE_DESCRIPTION("Siliconfile NOON010PC30 camera driver");
 792 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
 793 MODULE_LICENSE("GPL");