linux/drivers/staging/media/atomisp/i2c/ov5693/atomisp-ov5693.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Support for OmniVision OV5693 1080p HD camera sensor.
   4 *
   5 * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version
   9 * 2 as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 *
  17 */
  18
  19#include <linux/module.h>
  20#include <linux/types.h>
  21#include <linux/kernel.h>
  22#include <linux/mm.h>
  23#include <linux/string.h>
  24#include <linux/errno.h>
  25#include <linux/init.h>
  26#include <linux/kmod.h>
  27#include <linux/device.h>
  28#include <linux/delay.h>
  29#include <linux/slab.h>
  30#include <linux/i2c.h>
  31#include <linux/moduleparam.h>
  32#include <media/v4l2-device.h>
  33#include <linux/io.h>
  34#include <linux/acpi.h>
  35#include "../../include/linux/atomisp_gmin_platform.h"
  36
  37#include "ov5693.h"
  38#include "ad5823.h"
  39
  40#define __cci_delay(t) \
  41        do { \
  42                if ((t) < 10) { \
  43                        usleep_range((t) * 1000, ((t) + 1) * 1000); \
  44                } else { \
  45                        msleep((t)); \
  46                } \
  47        } while (0)
  48
  49/* Value 30ms reached through experimentation on byt ecs.
  50 * The DS specifies a much lower value but when using a smaller value
  51 * the I2C bus sometimes locks up permanently when starting the camera.
  52 * This issue could not be reproduced on cht, so we can reduce the
  53 * delay value to a lower value when insmod.
  54 */
  55static uint up_delay = 30;
  56module_param(up_delay, uint, 0644);
  57MODULE_PARM_DESC(up_delay,
  58                 "Delay prior to the first CCI transaction for ov5693");
  59
  60static int vcm_ad_i2c_wr8(struct i2c_client *client, u8 reg, u8 val)
  61{
  62        int err;
  63        struct i2c_msg msg;
  64        u8 buf[2];
  65
  66        buf[0] = reg;
  67        buf[1] = val;
  68
  69        msg.addr = VCM_ADDR;
  70        msg.flags = 0;
  71        msg.len = 2;
  72        msg.buf = &buf[0];
  73
  74        err = i2c_transfer(client->adapter, &msg, 1);
  75        if (err != 1) {
  76                dev_err(&client->dev, "%s: vcm i2c fail, err code = %d\n",
  77                        __func__, err);
  78                return -EIO;
  79        }
  80        return 0;
  81}
  82
  83static int ad5823_i2c_write(struct i2c_client *client, u8 reg, u8 val)
  84{
  85        struct i2c_msg msg;
  86        u8 buf[2];
  87
  88        buf[0] = reg;
  89        buf[1] = val;
  90        msg.addr = AD5823_VCM_ADDR;
  91        msg.flags = 0;
  92        msg.len = 0x02;
  93        msg.buf = &buf[0];
  94
  95        if (i2c_transfer(client->adapter, &msg, 1) != 1)
  96                return -EIO;
  97        return 0;
  98}
  99
 100static int ad5823_i2c_read(struct i2c_client *client, u8 reg, u8 *val)
 101{
 102        struct i2c_msg msg[2];
 103        u8 buf[2];
 104
 105        buf[0] = reg;
 106        buf[1] = 0;
 107
 108        msg[0].addr = AD5823_VCM_ADDR;
 109        msg[0].flags = 0;
 110        msg[0].len = 0x01;
 111        msg[0].buf = &buf[0];
 112
 113        msg[1].addr = 0x0c;
 114        msg[1].flags = I2C_M_RD;
 115        msg[1].len = 0x01;
 116        msg[1].buf = &buf[1];
 117        *val = 0;
 118        if (i2c_transfer(client->adapter, msg, 2) != 2)
 119                return -EIO;
 120        *val = buf[1];
 121        return 0;
 122}
 123
 124static const u32 ov5693_embedded_effective_size = 28;
 125
 126/* i2c read/write stuff */
 127static int ov5693_read_reg(struct i2c_client *client,
 128                           u16 data_length, u16 reg, u16 *val)
 129{
 130        int err;
 131        struct i2c_msg msg[2];
 132        unsigned char data[6];
 133
 134        if (!client->adapter) {
 135                dev_err(&client->dev, "%s error, no client->adapter\n",
 136                        __func__);
 137                return -ENODEV;
 138        }
 139
 140        if (data_length != OV5693_8BIT && data_length != OV5693_16BIT
 141            && data_length != OV5693_32BIT) {
 142                dev_err(&client->dev, "%s error, invalid data length\n",
 143                        __func__);
 144                return -EINVAL;
 145        }
 146
 147        memset(msg, 0, sizeof(msg));
 148
 149        msg[0].addr = client->addr;
 150        msg[0].flags = 0;
 151        msg[0].len = I2C_MSG_LENGTH;
 152        msg[0].buf = data;
 153
 154        /* high byte goes out first */
 155        data[0] = (u8)(reg >> 8);
 156        data[1] = (u8)(reg & 0xff);
 157
 158        msg[1].addr = client->addr;
 159        msg[1].len = data_length;
 160        msg[1].flags = I2C_M_RD;
 161        msg[1].buf = data;
 162
 163        err = i2c_transfer(client->adapter, msg, 2);
 164        if (err != 2) {
 165                if (err >= 0)
 166                        err = -EIO;
 167                dev_err(&client->dev,
 168                        "read from offset 0x%x error %d", reg, err);
 169                return err;
 170        }
 171
 172        *val = 0;
 173        /* high byte comes first */
 174        if (data_length == OV5693_8BIT)
 175                *val = (u8)data[0];
 176        else if (data_length == OV5693_16BIT)
 177                *val = be16_to_cpu(*(__be16 *)&data[0]);
 178        else
 179                *val = be32_to_cpu(*(__be32 *)&data[0]);
 180
 181        return 0;
 182}
 183
 184static int ov5693_i2c_write(struct i2c_client *client, u16 len, u8 *data)
 185{
 186        struct i2c_msg msg;
 187        const int num_msg = 1;
 188        int ret;
 189
 190        msg.addr = client->addr;
 191        msg.flags = 0;
 192        msg.len = len;
 193        msg.buf = data;
 194        ret = i2c_transfer(client->adapter, &msg, 1);
 195
 196        return ret == num_msg ? 0 : -EIO;
 197}
 198
 199static int vcm_dw_i2c_write(struct i2c_client *client, u16 data)
 200{
 201        struct i2c_msg msg;
 202        const int num_msg = 1;
 203        int ret;
 204        __be16 val;
 205
 206        val = cpu_to_be16(data);
 207        msg.addr = VCM_ADDR;
 208        msg.flags = 0;
 209        msg.len = OV5693_16BIT;
 210        msg.buf = (void *)&val;
 211
 212        ret = i2c_transfer(client->adapter, &msg, 1);
 213
 214        return ret == num_msg ? 0 : -EIO;
 215}
 216
 217/*
 218 * Theory: per datasheet, the two VCMs both allow for a 2-byte read.
 219 * The DW9714 doesn't actually specify what this does (it has a
 220 * two-byte write-only protocol, but specifies the read sequence as
 221 * legal), but it returns the same data (zeroes) always, after an
 222 * undocumented initial NAK.  The AD5823 has a one-byte address
 223 * register to which all writes go, and subsequent reads will cycle
 224 * through the 8 bytes of registers.  Notably, the default values (the
 225 * device is always power-cycled affirmatively, so we can rely on
 226 * these) in AD5823 are not pairwise repetitions of the same 16 bit
 227 * word.  So all we have to do is sequentially read two bytes at a
 228 * time and see if we detect a difference in any of the first four
 229 * pairs.
 230 */
 231static int vcm_detect(struct i2c_client *client)
 232{
 233        int i, ret;
 234        struct i2c_msg msg;
 235        u16 data0 = 0, data;
 236
 237        for (i = 0; i < 4; i++) {
 238                msg.addr = VCM_ADDR;
 239                msg.flags = I2C_M_RD;
 240                msg.len = sizeof(data);
 241                msg.buf = (u8 *)&data;
 242                ret = i2c_transfer(client->adapter, &msg, 1);
 243
 244                /*
 245                 * DW9714 always fails the first read and returns
 246                 * zeroes for subsequent ones
 247                 */
 248                if (i == 0 && ret == -EREMOTEIO) {
 249                        data0 = 0;
 250                        continue;
 251                }
 252
 253                if (i == 0)
 254                        data0 = data;
 255
 256                if (data != data0)
 257                        return VCM_AD5823;
 258        }
 259        return ret == 1 ? VCM_DW9714 : ret;
 260}
 261
 262static int ov5693_write_reg(struct i2c_client *client, u16 data_length,
 263                            u16 reg, u16 val)
 264{
 265        int ret;
 266        unsigned char data[4] = {0};
 267        __be16 *wreg = (void *)data;
 268        const u16 len = data_length + sizeof(u16); /* 16-bit address + data */
 269
 270        if (data_length != OV5693_8BIT && data_length != OV5693_16BIT) {
 271                dev_err(&client->dev,
 272                        "%s error, invalid data_length\n", __func__);
 273                return -EINVAL;
 274        }
 275
 276        /* high byte goes out first */
 277        *wreg = cpu_to_be16(reg);
 278
 279        if (data_length == OV5693_8BIT) {
 280                data[2] = (u8)(val);
 281        } else {
 282                /* OV5693_16BIT */
 283                __be16 *wdata = (void *)&data[2];
 284
 285                *wdata = cpu_to_be16(val);
 286        }
 287
 288        ret = ov5693_i2c_write(client, len, data);
 289        if (ret)
 290                dev_err(&client->dev,
 291                        "write error: wrote 0x%x to offset 0x%x error %d",
 292                        val, reg, ret);
 293
 294        return ret;
 295}
 296
 297/*
 298 * ov5693_write_reg_array - Initializes a list of OV5693 registers
 299 * @client: i2c driver client structure
 300 * @reglist: list of registers to be written
 301 *
 302 * This function initializes a list of registers. When consecutive addresses
 303 * are found in a row on the list, this function creates a buffer and sends
 304 * consecutive data in a single i2c_transfer().
 305 *
 306 * __ov5693_flush_reg_array, __ov5693_buf_reg_array() and
 307 * __ov5693_write_reg_is_consecutive() are internal functions to
 308 * ov5693_write_reg_array_fast() and should be not used anywhere else.
 309 *
 310 */
 311
 312static int __ov5693_flush_reg_array(struct i2c_client *client,
 313                                    struct ov5693_write_ctrl *ctrl)
 314{
 315        u16 size;
 316        __be16 *reg = (void *)&ctrl->buffer.addr;
 317
 318        if (ctrl->index == 0)
 319                return 0;
 320
 321        size = sizeof(u16) + ctrl->index; /* 16-bit address + data */
 322
 323        *reg = cpu_to_be16(ctrl->buffer.addr);
 324        ctrl->index = 0;
 325
 326        return ov5693_i2c_write(client, size, (u8 *)reg);
 327}
 328
 329static int __ov5693_buf_reg_array(struct i2c_client *client,
 330                                  struct ov5693_write_ctrl *ctrl,
 331                                  const struct ov5693_reg *next)
 332{
 333        int size;
 334        __be16 *data16;
 335
 336        switch (next->type) {
 337        case OV5693_8BIT:
 338                size = 1;
 339                ctrl->buffer.data[ctrl->index] = (u8)next->val;
 340                break;
 341        case OV5693_16BIT:
 342                size = 2;
 343
 344                data16 = (void *)&ctrl->buffer.data[ctrl->index];
 345                *data16 = cpu_to_be16((u16)next->val);
 346                break;
 347        default:
 348                return -EINVAL;
 349        }
 350
 351        /* When first item is added, we need to store its starting address */
 352        if (ctrl->index == 0)
 353                ctrl->buffer.addr = next->reg;
 354
 355        ctrl->index += size;
 356
 357        /*
 358         * Buffer cannot guarantee free space for u32? Better flush it to avoid
 359         * possible lack of memory for next item.
 360         */
 361        if (ctrl->index + sizeof(u16) >= OV5693_MAX_WRITE_BUF_SIZE)
 362                return __ov5693_flush_reg_array(client, ctrl);
 363
 364        return 0;
 365}
 366
 367static int __ov5693_write_reg_is_consecutive(struct i2c_client *client,
 368        struct ov5693_write_ctrl *ctrl,
 369        const struct ov5693_reg *next)
 370{
 371        if (ctrl->index == 0)
 372                return 1;
 373
 374        return ctrl->buffer.addr + ctrl->index == next->reg;
 375}
 376
 377static int ov5693_write_reg_array(struct i2c_client *client,
 378                                  const struct ov5693_reg *reglist)
 379{
 380        const struct ov5693_reg *next = reglist;
 381        struct ov5693_write_ctrl ctrl;
 382        int err;
 383
 384        ctrl.index = 0;
 385        for (; next->type != OV5693_TOK_TERM; next++) {
 386                switch (next->type & OV5693_TOK_MASK) {
 387                case OV5693_TOK_DELAY:
 388                        err = __ov5693_flush_reg_array(client, &ctrl);
 389                        if (err)
 390                                return err;
 391                        msleep(next->val);
 392                        break;
 393                default:
 394                        /*
 395                         * If next address is not consecutive, data needs to be
 396                         * flushed before proceed.
 397                         */
 398                        if (!__ov5693_write_reg_is_consecutive(client, &ctrl,
 399                                                               next)) {
 400                                err = __ov5693_flush_reg_array(client, &ctrl);
 401                                if (err)
 402                                        return err;
 403                        }
 404                        err = __ov5693_buf_reg_array(client, &ctrl, next);
 405                        if (err) {
 406                                dev_err(&client->dev,
 407                                        "%s: write error, aborted\n",
 408                                        __func__);
 409                                return err;
 410                        }
 411                        break;
 412                }
 413        }
 414
 415        return __ov5693_flush_reg_array(client, &ctrl);
 416}
 417
 418static int ov5693_g_focal(struct v4l2_subdev *sd, s32 *val)
 419{
 420        *val = (OV5693_FOCAL_LENGTH_NUM << 16) | OV5693_FOCAL_LENGTH_DEM;
 421        return 0;
 422}
 423
 424static int ov5693_g_fnumber(struct v4l2_subdev *sd, s32 *val)
 425{
 426        /*const f number for imx*/
 427        *val = (OV5693_F_NUMBER_DEFAULT_NUM << 16) | OV5693_F_NUMBER_DEM;
 428        return 0;
 429}
 430
 431static int ov5693_g_fnumber_range(struct v4l2_subdev *sd, s32 *val)
 432{
 433        *val = (OV5693_F_NUMBER_DEFAULT_NUM << 24) |
 434               (OV5693_F_NUMBER_DEM << 16) |
 435               (OV5693_F_NUMBER_DEFAULT_NUM << 8) | OV5693_F_NUMBER_DEM;
 436        return 0;
 437}
 438
 439static int ov5693_g_bin_factor_x(struct v4l2_subdev *sd, s32 *val)
 440{
 441        struct ov5693_device *dev = to_ov5693_sensor(sd);
 442
 443        *val = ov5693_res[dev->fmt_idx].bin_factor_x;
 444
 445        return 0;
 446}
 447
 448static int ov5693_g_bin_factor_y(struct v4l2_subdev *sd, s32 *val)
 449{
 450        struct ov5693_device *dev = to_ov5693_sensor(sd);
 451
 452        *val = ov5693_res[dev->fmt_idx].bin_factor_y;
 453
 454        return 0;
 455}
 456
 457static int ov5693_get_intg_factor(struct i2c_client *client,
 458                                  struct camera_mipi_info *info,
 459                                  const struct ov5693_resolution *res)
 460{
 461        struct v4l2_subdev *sd = i2c_get_clientdata(client);
 462        struct ov5693_device *dev = to_ov5693_sensor(sd);
 463        struct atomisp_sensor_mode_data *buf = &info->data;
 464        unsigned int pix_clk_freq_hz;
 465        u16 reg_val;
 466        int ret;
 467
 468        if (!info)
 469                return -EINVAL;
 470
 471        /* pixel clock */
 472        pix_clk_freq_hz = res->pix_clk_freq * 1000000;
 473
 474        dev->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
 475        buf->vt_pix_clk_freq_mhz = pix_clk_freq_hz;
 476
 477        /* get integration time */
 478        buf->coarse_integration_time_min = OV5693_COARSE_INTG_TIME_MIN;
 479        buf->coarse_integration_time_max_margin =
 480            OV5693_COARSE_INTG_TIME_MAX_MARGIN;
 481
 482        buf->fine_integration_time_min = OV5693_FINE_INTG_TIME_MIN;
 483        buf->fine_integration_time_max_margin =
 484            OV5693_FINE_INTG_TIME_MAX_MARGIN;
 485
 486        buf->fine_integration_time_def = OV5693_FINE_INTG_TIME_MIN;
 487        buf->frame_length_lines = res->lines_per_frame;
 488        buf->line_length_pck = res->pixels_per_line;
 489        buf->read_mode = res->bin_mode;
 490
 491        /* get the cropping and output resolution to ISP for this mode. */
 492        ret =  ov5693_read_reg(client, OV5693_16BIT,
 493                               OV5693_HORIZONTAL_START_H, &reg_val);
 494        if (ret)
 495                return ret;
 496        buf->crop_horizontal_start = reg_val;
 497
 498        ret =  ov5693_read_reg(client, OV5693_16BIT,
 499                               OV5693_VERTICAL_START_H, &reg_val);
 500        if (ret)
 501                return ret;
 502        buf->crop_vertical_start = reg_val;
 503
 504        ret = ov5693_read_reg(client, OV5693_16BIT,
 505                              OV5693_HORIZONTAL_END_H, &reg_val);
 506        if (ret)
 507                return ret;
 508        buf->crop_horizontal_end = reg_val;
 509
 510        ret = ov5693_read_reg(client, OV5693_16BIT,
 511                              OV5693_VERTICAL_END_H, &reg_val);
 512        if (ret)
 513                return ret;
 514        buf->crop_vertical_end = reg_val;
 515
 516        ret = ov5693_read_reg(client, OV5693_16BIT,
 517                              OV5693_HORIZONTAL_OUTPUT_SIZE_H, &reg_val);
 518        if (ret)
 519                return ret;
 520        buf->output_width = reg_val;
 521
 522        ret = ov5693_read_reg(client, OV5693_16BIT,
 523                              OV5693_VERTICAL_OUTPUT_SIZE_H, &reg_val);
 524        if (ret)
 525                return ret;
 526        buf->output_height = reg_val;
 527
 528        buf->binning_factor_x = res->bin_factor_x ?
 529                                res->bin_factor_x : 1;
 530        buf->binning_factor_y = res->bin_factor_y ?
 531                                res->bin_factor_y : 1;
 532        return 0;
 533}
 534
 535static long __ov5693_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
 536                                  int gain, int digitgain)
 537
 538{
 539        struct i2c_client *client = v4l2_get_subdevdata(sd);
 540        struct ov5693_device *dev = to_ov5693_sensor(sd);
 541        u16 vts, hts;
 542        int ret, exp_val;
 543
 544        hts = ov5693_res[dev->fmt_idx].pixels_per_line;
 545        vts = ov5693_res[dev->fmt_idx].lines_per_frame;
 546        /*
 547         * If coarse_itg is larger than 1<<15, can not write to reg directly.
 548         * The way is to write coarse_itg/2 to the reg, meanwhile write 2*hts
 549         * to the reg.
 550         */
 551        if (coarse_itg > (1 << 15)) {
 552                hts = hts * 2;
 553                coarse_itg = (int)coarse_itg / 2;
 554        }
 555        /* group hold */
 556        ret = ov5693_write_reg(client, OV5693_8BIT,
 557                               OV5693_GROUP_ACCESS, 0x00);
 558        if (ret) {
 559                dev_err(&client->dev, "%s: write %x error, aborted\n",
 560                        __func__, OV5693_GROUP_ACCESS);
 561                return ret;
 562        }
 563
 564        ret = ov5693_write_reg(client, OV5693_8BIT,
 565                               OV5693_TIMING_HTS_H, (hts >> 8) & 0xFF);
 566        if (ret) {
 567                dev_err(&client->dev, "%s: write %x error, aborted\n",
 568                        __func__, OV5693_TIMING_HTS_H);
 569                return ret;
 570        }
 571
 572        ret = ov5693_write_reg(client, OV5693_8BIT,
 573                               OV5693_TIMING_HTS_L, hts & 0xFF);
 574        if (ret) {
 575                dev_err(&client->dev, "%s: write %x error, aborted\n",
 576                        __func__, OV5693_TIMING_HTS_L);
 577                return ret;
 578        }
 579        /* Increase the VTS to match exposure + MARGIN */
 580        if (coarse_itg > vts - OV5693_INTEGRATION_TIME_MARGIN)
 581                vts = (u16)coarse_itg + OV5693_INTEGRATION_TIME_MARGIN;
 582
 583        ret = ov5693_write_reg(client, OV5693_8BIT,
 584                               OV5693_TIMING_VTS_H, (vts >> 8) & 0xFF);
 585        if (ret) {
 586                dev_err(&client->dev, "%s: write %x error, aborted\n",
 587                        __func__, OV5693_TIMING_VTS_H);
 588                return ret;
 589        }
 590
 591        ret = ov5693_write_reg(client, OV5693_8BIT,
 592                               OV5693_TIMING_VTS_L, vts & 0xFF);
 593        if (ret) {
 594                dev_err(&client->dev, "%s: write %x error, aborted\n",
 595                        __func__, OV5693_TIMING_VTS_L);
 596                return ret;
 597        }
 598
 599        /* set exposure */
 600
 601        /* Lower four bit should be 0*/
 602        exp_val = coarse_itg << 4;
 603        ret = ov5693_write_reg(client, OV5693_8BIT,
 604                               OV5693_EXPOSURE_L, exp_val & 0xFF);
 605        if (ret) {
 606                dev_err(&client->dev, "%s: write %x error, aborted\n",
 607                        __func__, OV5693_EXPOSURE_L);
 608                return ret;
 609        }
 610
 611        ret = ov5693_write_reg(client, OV5693_8BIT,
 612                               OV5693_EXPOSURE_M, (exp_val >> 8) & 0xFF);
 613        if (ret) {
 614                dev_err(&client->dev, "%s: write %x error, aborted\n",
 615                        __func__, OV5693_EXPOSURE_M);
 616                return ret;
 617        }
 618
 619        ret = ov5693_write_reg(client, OV5693_8BIT,
 620                               OV5693_EXPOSURE_H, (exp_val >> 16) & 0x0F);
 621        if (ret) {
 622                dev_err(&client->dev, "%s: write %x error, aborted\n",
 623                        __func__, OV5693_EXPOSURE_H);
 624                return ret;
 625        }
 626
 627        /* Analog gain */
 628        ret = ov5693_write_reg(client, OV5693_8BIT,
 629                               OV5693_AGC_L, gain & 0xff);
 630        if (ret) {
 631                dev_err(&client->dev, "%s: write %x error, aborted\n",
 632                        __func__, OV5693_AGC_L);
 633                return ret;
 634        }
 635
 636        ret = ov5693_write_reg(client, OV5693_8BIT,
 637                               OV5693_AGC_H, (gain >> 8) & 0xff);
 638        if (ret) {
 639                dev_err(&client->dev, "%s: write %x error, aborted\n",
 640                        __func__, OV5693_AGC_H);
 641                return ret;
 642        }
 643
 644        /* Digital gain */
 645        if (digitgain) {
 646                ret = ov5693_write_reg(client, OV5693_16BIT,
 647                                       OV5693_MWB_RED_GAIN_H, digitgain);
 648                if (ret) {
 649                        dev_err(&client->dev, "%s: write %x error, aborted\n",
 650                                __func__, OV5693_MWB_RED_GAIN_H);
 651                        return ret;
 652                }
 653
 654                ret = ov5693_write_reg(client, OV5693_16BIT,
 655                                       OV5693_MWB_GREEN_GAIN_H, digitgain);
 656                if (ret) {
 657                        dev_err(&client->dev, "%s: write %x error, aborted\n",
 658                                __func__, OV5693_MWB_RED_GAIN_H);
 659                        return ret;
 660                }
 661
 662                ret = ov5693_write_reg(client, OV5693_16BIT,
 663                                       OV5693_MWB_BLUE_GAIN_H, digitgain);
 664                if (ret) {
 665                        dev_err(&client->dev, "%s: write %x error, aborted\n",
 666                                __func__, OV5693_MWB_RED_GAIN_H);
 667                        return ret;
 668                }
 669        }
 670
 671        /* End group */
 672        ret = ov5693_write_reg(client, OV5693_8BIT,
 673                               OV5693_GROUP_ACCESS, 0x10);
 674        if (ret)
 675                return ret;
 676
 677        /* Delay launch group */
 678        ret = ov5693_write_reg(client, OV5693_8BIT,
 679                               OV5693_GROUP_ACCESS, 0xa0);
 680        if (ret)
 681                return ret;
 682        return ret;
 683}
 684
 685static int ov5693_set_exposure(struct v4l2_subdev *sd, int exposure,
 686                               int gain, int digitgain)
 687{
 688        struct ov5693_device *dev = to_ov5693_sensor(sd);
 689        int ret;
 690
 691        mutex_lock(&dev->input_lock);
 692        ret = __ov5693_set_exposure(sd, exposure, gain, digitgain);
 693        mutex_unlock(&dev->input_lock);
 694
 695        return ret;
 696}
 697
 698static long ov5693_s_exposure(struct v4l2_subdev *sd,
 699                              struct atomisp_exposure *exposure)
 700{
 701        u16 coarse_itg = exposure->integration_time[0];
 702        u16 analog_gain = exposure->gain[0];
 703        u16 digital_gain = exposure->gain[1];
 704
 705        /* we should not accept the invalid value below */
 706        if (analog_gain == 0) {
 707                struct i2c_client *client = v4l2_get_subdevdata(sd);
 708
 709                v4l2_err(client, "%s: invalid value\n", __func__);
 710                return -EINVAL;
 711        }
 712        return ov5693_set_exposure(sd, coarse_itg, analog_gain, digital_gain);
 713}
 714
 715static int ov5693_read_otp_reg_array(struct i2c_client *client, u16 size,
 716                                     u16 addr, u8 *buf)
 717{
 718        u16 index;
 719        int ret;
 720        u16 *pVal = NULL;
 721
 722        for (index = 0; index <= size; index++) {
 723                pVal = (u16 *)(buf + index);
 724                ret =
 725                    ov5693_read_reg(client, OV5693_8BIT, addr + index,
 726                                    pVal);
 727                if (ret)
 728                        return ret;
 729        }
 730
 731        return 0;
 732}
 733
 734static int __ov5693_otp_read(struct v4l2_subdev *sd, u8 *buf)
 735{
 736        struct i2c_client *client = v4l2_get_subdevdata(sd);
 737        struct ov5693_device *dev = to_ov5693_sensor(sd);
 738        int ret;
 739        int i;
 740        u8 *b = buf;
 741
 742        dev->otp_size = 0;
 743        for (i = 1; i < OV5693_OTP_BANK_MAX; i++) {
 744                /*set bank NO and OTP read mode. */
 745                ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_BANK_REG,
 746                                       (i | 0xc0));     //[7:6] 2'b11 [5:0] bank no
 747                if (ret) {
 748                        dev_err(&client->dev, "failed to prepare OTP page\n");
 749                        return ret;
 750                }
 751                //pr_debug("write 0x%x->0x%x\n",OV5693_OTP_BANK_REG,(i|0xc0));
 752
 753                /*enable read */
 754                ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_OTP_READ_REG,
 755                                       OV5693_OTP_MODE_READ);   // enable :1
 756                if (ret) {
 757                        dev_err(&client->dev,
 758                                "failed to set OTP reading mode page");
 759                        return ret;
 760                }
 761                //pr_debug("write 0x%x->0x%x\n",OV5693_OTP_READ_REG,OV5693_OTP_MODE_READ);
 762
 763                /* Reading the OTP data array */
 764                ret = ov5693_read_otp_reg_array(client, OV5693_OTP_BANK_SIZE,
 765                                                OV5693_OTP_START_ADDR,
 766                                                b);
 767                if (ret) {
 768                        dev_err(&client->dev, "failed to read OTP data\n");
 769                        return ret;
 770                }
 771
 772                //pr_debug("BANK[%2d] %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", i, *b, *(b+1), *(b+2), *(b+3), *(b+4), *(b+5), *(b+6), *(b+7), *(b+8), *(b+9), *(b+10), *(b+11), *(b+12), *(b+13), *(b+14), *(b+15));
 773
 774                //Intel OTP map, try to read 320byts first.
 775                if (i == 21) {
 776                        if ((*b) == 0) {
 777                                dev->otp_size = 320;
 778                                break;
 779                        } else {
 780                                b = buf;
 781                                continue;
 782                        }
 783                } else if (i ==
 784                           24) {                //if the first 320bytes data doesn't not exist, try to read the next 32bytes data.
 785                        if ((*b) == 0) {
 786                                dev->otp_size = 32;
 787                                break;
 788                        } else {
 789                                b = buf;
 790                                continue;
 791                        }
 792                } else if (i ==
 793                           27) {                //if the prvious 32bytes data doesn't exist, try to read the next 32bytes data again.
 794                        if ((*b) == 0) {
 795                                dev->otp_size = 32;
 796                                break;
 797                        } else {
 798                                dev->otp_size = 0;      // no OTP data.
 799                                break;
 800                        }
 801                }
 802
 803                b = b + OV5693_OTP_BANK_SIZE;
 804        }
 805        return 0;
 806}
 807
 808/*
 809 * Read otp data and store it into a kmalloced buffer.
 810 * The caller must kfree the buffer when no more needed.
 811 * @size: set to the size of the returned otp data.
 812 */
 813static void *ov5693_otp_read(struct v4l2_subdev *sd)
 814{
 815        struct i2c_client *client = v4l2_get_subdevdata(sd);
 816        u8 *buf;
 817        int ret;
 818
 819        buf = devm_kzalloc(&client->dev, (OV5693_OTP_DATA_SIZE + 16), GFP_KERNEL);
 820        if (!buf)
 821                return ERR_PTR(-ENOMEM);
 822
 823        //otp valid after mipi on and sw stream on
 824        ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x00);
 825
 826        ret = ov5693_write_reg(client, OV5693_8BIT,
 827                               OV5693_SW_STREAM, OV5693_START_STREAMING);
 828
 829        ret = __ov5693_otp_read(sd, buf);
 830
 831        //mipi off and sw stream off after otp read
 832        ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_FRAME_OFF_NUM, 0x0f);
 833
 834        ret = ov5693_write_reg(client, OV5693_8BIT,
 835                               OV5693_SW_STREAM, OV5693_STOP_STREAMING);
 836
 837        /* Driver has failed to find valid data */
 838        if (ret) {
 839                dev_err(&client->dev, "sensor found no valid OTP data\n");
 840                return ERR_PTR(ret);
 841        }
 842
 843        return buf;
 844}
 845
 846static int ov5693_g_priv_int_data(struct v4l2_subdev *sd,
 847                                  struct v4l2_private_int_data *priv)
 848{
 849        struct i2c_client *client = v4l2_get_subdevdata(sd);
 850        struct ov5693_device *dev = to_ov5693_sensor(sd);
 851        u8 __user *to = priv->data;
 852        u32 read_size = priv->size;
 853        int ret;
 854
 855        /* No need to copy data if size is 0 */
 856        if (!read_size)
 857                goto out;
 858
 859        if (IS_ERR(dev->otp_data)) {
 860                dev_err(&client->dev, "OTP data not available");
 861                return PTR_ERR(dev->otp_data);
 862        }
 863
 864        /* Correct read_size value only if bigger than maximum */
 865        if (read_size > OV5693_OTP_DATA_SIZE)
 866                read_size = OV5693_OTP_DATA_SIZE;
 867
 868        ret = copy_to_user(to, dev->otp_data, read_size);
 869        if (ret) {
 870                dev_err(&client->dev, "%s: failed to copy OTP data to user\n",
 871                        __func__);
 872                return -EFAULT;
 873        }
 874
 875        pr_debug("%s read_size:%d\n", __func__, read_size);
 876
 877out:
 878        /* Return correct size */
 879        priv->size = dev->otp_size;
 880
 881        return 0;
 882}
 883
 884static long ov5693_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
 885{
 886        switch (cmd) {
 887        case ATOMISP_IOC_S_EXPOSURE:
 888                return ov5693_s_exposure(sd, arg);
 889        case ATOMISP_IOC_G_SENSOR_PRIV_INT_DATA:
 890                return ov5693_g_priv_int_data(sd, arg);
 891        default:
 892                return -EINVAL;
 893        }
 894        return 0;
 895}
 896
 897/*
 898 * This returns the exposure time being used. This should only be used
 899 * for filling in EXIF data, not for actual image processing.
 900 */
 901static int ov5693_q_exposure(struct v4l2_subdev *sd, s32 *value)
 902{
 903        struct i2c_client *client = v4l2_get_subdevdata(sd);
 904        u16 reg_v, reg_v2;
 905        int ret;
 906
 907        /* get exposure */
 908        ret = ov5693_read_reg(client, OV5693_8BIT,
 909                              OV5693_EXPOSURE_L,
 910                              &reg_v);
 911        if (ret)
 912                goto err;
 913
 914        ret = ov5693_read_reg(client, OV5693_8BIT,
 915                              OV5693_EXPOSURE_M,
 916                              &reg_v2);
 917        if (ret)
 918                goto err;
 919
 920        reg_v += reg_v2 << 8;
 921        ret = ov5693_read_reg(client, OV5693_8BIT,
 922                              OV5693_EXPOSURE_H,
 923                              &reg_v2);
 924        if (ret)
 925                goto err;
 926
 927        *value = reg_v + (((u32)reg_v2 << 16));
 928err:
 929        return ret;
 930}
 931
 932static int ad5823_t_focus_vcm(struct v4l2_subdev *sd, u16 val)
 933{
 934        struct i2c_client *client = v4l2_get_subdevdata(sd);
 935        int ret = -EINVAL;
 936        u8 vcm_code;
 937
 938        ret = ad5823_i2c_read(client, AD5823_REG_VCM_CODE_MSB, &vcm_code);
 939        if (ret)
 940                return ret;
 941
 942        /* set reg VCM_CODE_MSB Bit[1:0] */
 943        vcm_code = (vcm_code & VCM_CODE_MSB_MASK) |
 944                   ((val >> 8) & ~VCM_CODE_MSB_MASK);
 945        ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB, vcm_code);
 946        if (ret)
 947                return ret;
 948
 949        /* set reg VCM_CODE_LSB Bit[7:0] */
 950        ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_LSB, (val & 0xff));
 951        if (ret)
 952                return ret;
 953
 954        /* set required vcm move time */
 955        vcm_code = AD5823_RESONANCE_PERIOD / AD5823_RESONANCE_COEF
 956                   - AD5823_HIGH_FREQ_RANGE;
 957        ret = ad5823_i2c_write(client, AD5823_REG_VCM_MOVE_TIME, vcm_code);
 958
 959        return ret;
 960}
 961
 962static int ad5823_t_focus_abs(struct v4l2_subdev *sd, s32 value)
 963{
 964        value = min(value, AD5823_MAX_FOCUS_POS);
 965        return ad5823_t_focus_vcm(sd, value);
 966}
 967
 968static int ov5693_t_focus_abs(struct v4l2_subdev *sd, s32 value)
 969{
 970        struct ov5693_device *dev = to_ov5693_sensor(sd);
 971        struct i2c_client *client = v4l2_get_subdevdata(sd);
 972        int ret = 0;
 973
 974        dev_dbg(&client->dev, "%s: FOCUS_POS: 0x%x\n", __func__, value);
 975        value = clamp(value, 0, OV5693_VCM_MAX_FOCUS_POS);
 976        if (dev->vcm == VCM_DW9714) {
 977                if (dev->vcm_update) {
 978                        ret = vcm_dw_i2c_write(client, VCM_PROTECTION_OFF);
 979                        if (ret)
 980                                return ret;
 981                        ret = vcm_dw_i2c_write(client, DIRECT_VCM);
 982                        if (ret)
 983                                return ret;
 984                        ret = vcm_dw_i2c_write(client, VCM_PROTECTION_ON);
 985                        if (ret)
 986                                return ret;
 987                        dev->vcm_update = false;
 988                }
 989                ret = vcm_dw_i2c_write(client,
 990                                       vcm_val(value, VCM_DEFAULT_S));
 991        } else if (dev->vcm == VCM_AD5823) {
 992                ad5823_t_focus_abs(sd, value);
 993        }
 994        if (ret == 0) {
 995                dev->number_of_steps = value - dev->focus;
 996                dev->focus = value;
 997                dev->timestamp_t_focus_abs = ktime_get();
 998        } else
 999                dev_err(&client->dev,
1000                        "%s: i2c failed. ret %d\n", __func__, ret);
1001
1002        return ret;
1003}
1004
1005static int ov5693_t_focus_rel(struct v4l2_subdev *sd, s32 value)
1006{
1007        struct ov5693_device *dev = to_ov5693_sensor(sd);
1008
1009        return ov5693_t_focus_abs(sd, dev->focus + value);
1010}
1011
1012#define DELAY_PER_STEP_NS       1000000
1013#define DELAY_MAX_PER_STEP_NS   (1000000 * 1023)
1014static int ov5693_q_focus_status(struct v4l2_subdev *sd, s32 *value)
1015{
1016        u32 status = 0;
1017        struct ov5693_device *dev = to_ov5693_sensor(sd);
1018        ktime_t temptime;
1019        ktime_t timedelay = ns_to_ktime(min_t(u32,
1020                                              abs(dev->number_of_steps) * DELAY_PER_STEP_NS,
1021                                              DELAY_MAX_PER_STEP_NS));
1022
1023        temptime = ktime_sub(ktime_get(), (dev->timestamp_t_focus_abs));
1024        if (ktime_compare(temptime, timedelay) <= 0) {
1025                status |= ATOMISP_FOCUS_STATUS_MOVING;
1026                status |= ATOMISP_FOCUS_HP_IN_PROGRESS;
1027        } else {
1028                status |= ATOMISP_FOCUS_STATUS_ACCEPTS_NEW_MOVE;
1029                status |= ATOMISP_FOCUS_HP_COMPLETE;
1030        }
1031
1032        *value = status;
1033
1034        return 0;
1035}
1036
1037static int ov5693_q_focus_abs(struct v4l2_subdev *sd, s32 *value)
1038{
1039        struct ov5693_device *dev = to_ov5693_sensor(sd);
1040        s32 val;
1041
1042        ov5693_q_focus_status(sd, &val);
1043
1044        if (val & ATOMISP_FOCUS_STATUS_MOVING)
1045                *value  = dev->focus - dev->number_of_steps;
1046        else
1047                *value  = dev->focus;
1048
1049        return 0;
1050}
1051
1052static int ov5693_t_vcm_slew(struct v4l2_subdev *sd, s32 value)
1053{
1054        struct ov5693_device *dev = to_ov5693_sensor(sd);
1055
1056        dev->number_of_steps = value;
1057        dev->vcm_update = true;
1058        return 0;
1059}
1060
1061static int ov5693_t_vcm_timing(struct v4l2_subdev *sd, s32 value)
1062{
1063        struct ov5693_device *dev = to_ov5693_sensor(sd);
1064
1065        dev->number_of_steps = value;
1066        dev->vcm_update = true;
1067        return 0;
1068}
1069
1070static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
1071{
1072        struct ov5693_device *dev =
1073            container_of(ctrl->handler, struct ov5693_device, ctrl_handler);
1074        struct i2c_client *client = v4l2_get_subdevdata(&dev->sd);
1075        int ret = 0;
1076
1077        switch (ctrl->id) {
1078        case V4L2_CID_FOCUS_ABSOLUTE:
1079                dev_dbg(&client->dev, "%s: CID_FOCUS_ABSOLUTE:%d.\n",
1080                        __func__, ctrl->val);
1081                ret = ov5693_t_focus_abs(&dev->sd, ctrl->val);
1082                break;
1083        case V4L2_CID_FOCUS_RELATIVE:
1084                dev_dbg(&client->dev, "%s: CID_FOCUS_RELATIVE:%d.\n",
1085                        __func__, ctrl->val);
1086                ret = ov5693_t_focus_rel(&dev->sd, ctrl->val);
1087                break;
1088        case V4L2_CID_VCM_SLEW:
1089                ret = ov5693_t_vcm_slew(&dev->sd, ctrl->val);
1090                break;
1091        case V4L2_CID_VCM_TIMING:
1092                ret = ov5693_t_vcm_timing(&dev->sd, ctrl->val);
1093                break;
1094        default:
1095                ret = -EINVAL;
1096        }
1097        return ret;
1098}
1099
1100static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
1101{
1102        struct ov5693_device *dev =
1103            container_of(ctrl->handler, struct ov5693_device, ctrl_handler);
1104        int ret = 0;
1105
1106        switch (ctrl->id) {
1107        case V4L2_CID_EXPOSURE_ABSOLUTE:
1108                ret = ov5693_q_exposure(&dev->sd, &ctrl->val);
1109                break;
1110        case V4L2_CID_FOCAL_ABSOLUTE:
1111                ret = ov5693_g_focal(&dev->sd, &ctrl->val);
1112                break;
1113        case V4L2_CID_FNUMBER_ABSOLUTE:
1114                ret = ov5693_g_fnumber(&dev->sd, &ctrl->val);
1115                break;
1116        case V4L2_CID_FNUMBER_RANGE:
1117                ret = ov5693_g_fnumber_range(&dev->sd, &ctrl->val);
1118                break;
1119        case V4L2_CID_FOCUS_ABSOLUTE:
1120                ret = ov5693_q_focus_abs(&dev->sd, &ctrl->val);
1121                break;
1122        case V4L2_CID_FOCUS_STATUS:
1123                ret = ov5693_q_focus_status(&dev->sd, &ctrl->val);
1124                break;
1125        case V4L2_CID_BIN_FACTOR_HORZ:
1126                ret = ov5693_g_bin_factor_x(&dev->sd, &ctrl->val);
1127                break;
1128        case V4L2_CID_BIN_FACTOR_VERT:
1129                ret = ov5693_g_bin_factor_y(&dev->sd, &ctrl->val);
1130                break;
1131        default:
1132                ret = -EINVAL;
1133        }
1134
1135        return ret;
1136}
1137
1138static const struct v4l2_ctrl_ops ctrl_ops = {
1139        .s_ctrl = ov5693_s_ctrl,
1140        .g_volatile_ctrl = ov5693_g_volatile_ctrl
1141};
1142
1143static const struct v4l2_ctrl_config ov5693_controls[] = {
1144        {
1145                .ops = &ctrl_ops,
1146                .id = V4L2_CID_EXPOSURE_ABSOLUTE,
1147                .type = V4L2_CTRL_TYPE_INTEGER,
1148                .name = "exposure",
1149                .min = 0x0,
1150                .max = 0xffff,
1151                .step = 0x01,
1152                .def = 0x00,
1153                .flags = 0,
1154        },
1155        {
1156                .ops = &ctrl_ops,
1157                .id = V4L2_CID_FOCAL_ABSOLUTE,
1158                .type = V4L2_CTRL_TYPE_INTEGER,
1159                .name = "focal length",
1160                .min = OV5693_FOCAL_LENGTH_DEFAULT,
1161                .max = OV5693_FOCAL_LENGTH_DEFAULT,
1162                .step = 0x01,
1163                .def = OV5693_FOCAL_LENGTH_DEFAULT,
1164                .flags = 0,
1165        },
1166        {
1167                .ops = &ctrl_ops,
1168                .id = V4L2_CID_FNUMBER_ABSOLUTE,
1169                .type = V4L2_CTRL_TYPE_INTEGER,
1170                .name = "f-number",
1171                .min = OV5693_F_NUMBER_DEFAULT,
1172                .max = OV5693_F_NUMBER_DEFAULT,
1173                .step = 0x01,
1174                .def = OV5693_F_NUMBER_DEFAULT,
1175                .flags = 0,
1176        },
1177        {
1178                .ops = &ctrl_ops,
1179                .id = V4L2_CID_FNUMBER_RANGE,
1180                .type = V4L2_CTRL_TYPE_INTEGER,
1181                .name = "f-number range",
1182                .min = OV5693_F_NUMBER_RANGE,
1183                .max = OV5693_F_NUMBER_RANGE,
1184                .step = 0x01,
1185                .def = OV5693_F_NUMBER_RANGE,
1186                .flags = 0,
1187        },
1188        {
1189                .ops = &ctrl_ops,
1190                .id = V4L2_CID_FOCUS_ABSOLUTE,
1191                .type = V4L2_CTRL_TYPE_INTEGER,
1192                .name = "focus move absolute",
1193                .min = 0,
1194                .max = OV5693_VCM_MAX_FOCUS_POS,
1195                .step = 1,
1196                .def = 0,
1197                .flags = 0,
1198        },
1199        {
1200                .ops = &ctrl_ops,
1201                .id = V4L2_CID_FOCUS_RELATIVE,
1202                .type = V4L2_CTRL_TYPE_INTEGER,
1203                .name = "focus move relative",
1204                .min = OV5693_VCM_MAX_FOCUS_NEG,
1205                .max = OV5693_VCM_MAX_FOCUS_POS,
1206                .step = 1,
1207                .def = 0,
1208                .flags = 0,
1209        },
1210        {
1211                .ops = &ctrl_ops,
1212                .id = V4L2_CID_FOCUS_STATUS,
1213                .type = V4L2_CTRL_TYPE_INTEGER,
1214                .name = "focus status",
1215                .min = 0,
1216                .max = 100,             /* allow enum to grow in the future */
1217                .step = 1,
1218                .def = 0,
1219                .flags = 0,
1220        },
1221        {
1222                .ops = &ctrl_ops,
1223                .id = V4L2_CID_VCM_SLEW,
1224                .type = V4L2_CTRL_TYPE_INTEGER,
1225                .name = "vcm slew",
1226                .min = 0,
1227                .max = OV5693_VCM_SLEW_STEP_MAX,
1228                .step = 1,
1229                .def = 0,
1230                .flags = 0,
1231        },
1232        {
1233                .ops = &ctrl_ops,
1234                .id = V4L2_CID_VCM_TIMING,
1235                .type = V4L2_CTRL_TYPE_INTEGER,
1236                .name = "vcm step time",
1237                .min = 0,
1238                .max = OV5693_VCM_SLEW_TIME_MAX,
1239                .step = 1,
1240                .def = 0,
1241                .flags = 0,
1242        },
1243        {
1244                .ops = &ctrl_ops,
1245                .id = V4L2_CID_BIN_FACTOR_HORZ,
1246                .type = V4L2_CTRL_TYPE_INTEGER,
1247                .name = "horizontal binning factor",
1248                .min = 0,
1249                .max = OV5693_BIN_FACTOR_MAX,
1250                .step = 1,
1251                .def = 0,
1252                .flags = 0,
1253        },
1254        {
1255                .ops = &ctrl_ops,
1256                .id = V4L2_CID_BIN_FACTOR_VERT,
1257                .type = V4L2_CTRL_TYPE_INTEGER,
1258                .name = "vertical binning factor",
1259                .min = 0,
1260                .max = OV5693_BIN_FACTOR_MAX,
1261                .step = 1,
1262                .def = 0,
1263                .flags = 0,
1264        },
1265};
1266
1267static int ov5693_init(struct v4l2_subdev *sd)
1268{
1269        struct ov5693_device *dev = to_ov5693_sensor(sd);
1270        struct i2c_client *client = v4l2_get_subdevdata(sd);
1271        int ret;
1272
1273        pr_info("%s\n", __func__);
1274        mutex_lock(&dev->input_lock);
1275        dev->vcm_update = false;
1276
1277        if (dev->vcm == VCM_AD5823) {
1278                ret = vcm_ad_i2c_wr8(client, 0x01, 0x01); /* vcm init test */
1279                if (ret)
1280                        dev_err(&client->dev,
1281                                "vcm reset failed\n");
1282                /*change the mode*/
1283                ret = ad5823_i2c_write(client, AD5823_REG_VCM_CODE_MSB,
1284                                       AD5823_RING_CTRL_ENABLE);
1285                if (ret)
1286                        dev_err(&client->dev,
1287                                "vcm enable ringing failed\n");
1288                ret = ad5823_i2c_write(client, AD5823_REG_MODE,
1289                                       AD5823_ARC_RES1);
1290                if (ret)
1291                        dev_err(&client->dev,
1292                                "vcm change mode failed\n");
1293        }
1294
1295        /*change initial focus value for ad5823*/
1296        if (dev->vcm == VCM_AD5823) {
1297                dev->focus = AD5823_INIT_FOCUS_POS;
1298                ov5693_t_focus_abs(sd, AD5823_INIT_FOCUS_POS);
1299        } else {
1300                dev->focus = 0;
1301                ov5693_t_focus_abs(sd, 0);
1302        }
1303
1304        mutex_unlock(&dev->input_lock);
1305
1306        return 0;
1307}
1308
1309static int power_ctrl(struct v4l2_subdev *sd, bool flag)
1310{
1311        int ret;
1312        struct ov5693_device *dev = to_ov5693_sensor(sd);
1313
1314        if (!dev || !dev->platform_data)
1315                return -ENODEV;
1316
1317        /*
1318         * This driver assumes "internal DVDD, PWDNB tied to DOVDD".
1319         * In this set up only gpio0 (XSHUTDN) should be available
1320         * but in some products (for example ECS) gpio1 (PWDNB) is
1321         * also available. If gpio1 is available we emulate it being
1322         * tied to DOVDD here.
1323         */
1324        if (flag) {
1325                ret = dev->platform_data->v2p8_ctrl(sd, 1);
1326                dev->platform_data->gpio1_ctrl(sd, 1);
1327                if (ret == 0) {
1328                        ret = dev->platform_data->v1p8_ctrl(sd, 1);
1329                        if (ret) {
1330                                dev->platform_data->gpio1_ctrl(sd, 0);
1331                                ret = dev->platform_data->v2p8_ctrl(sd, 0);
1332                        }
1333                }
1334        } else {
1335                dev->platform_data->gpio1_ctrl(sd, 0);
1336                ret = dev->platform_data->v1p8_ctrl(sd, 0);
1337                ret |= dev->platform_data->v2p8_ctrl(sd, 0);
1338        }
1339
1340        return ret;
1341}
1342
1343static int gpio_ctrl(struct v4l2_subdev *sd, bool flag)
1344{
1345        struct ov5693_device *dev = to_ov5693_sensor(sd);
1346
1347        if (!dev || !dev->platform_data)
1348                return -ENODEV;
1349
1350        return dev->platform_data->gpio0_ctrl(sd, flag);
1351}
1352
1353static int __power_up(struct v4l2_subdev *sd)
1354{
1355        struct ov5693_device *dev = to_ov5693_sensor(sd);
1356        struct i2c_client *client = v4l2_get_subdevdata(sd);
1357        int ret;
1358
1359        if (!dev->platform_data) {
1360                dev_err(&client->dev,
1361                        "no camera_sensor_platform_data");
1362                return -ENODEV;
1363        }
1364
1365        /* power control */
1366        ret = power_ctrl(sd, 1);
1367        if (ret)
1368                goto fail_power;
1369
1370        /* according to DS, at least 5ms is needed between DOVDD and PWDN */
1371        /* add this delay time to 10~11ms*/
1372        usleep_range(10000, 11000);
1373
1374        /* gpio ctrl */
1375        ret = gpio_ctrl(sd, 1);
1376        if (ret) {
1377                ret = gpio_ctrl(sd, 1);
1378                if (ret)
1379                        goto fail_power;
1380        }
1381
1382        /* flis clock control */
1383        ret = dev->platform_data->flisclk_ctrl(sd, 1);
1384        if (ret)
1385                goto fail_clk;
1386
1387        __cci_delay(up_delay);
1388
1389        return 0;
1390
1391fail_clk:
1392        gpio_ctrl(sd, 0);
1393fail_power:
1394        power_ctrl(sd, 0);
1395        dev_err(&client->dev, "sensor power-up failed\n");
1396
1397        return ret;
1398}
1399
1400static int power_down(struct v4l2_subdev *sd)
1401{
1402        struct ov5693_device *dev = to_ov5693_sensor(sd);
1403        struct i2c_client *client = v4l2_get_subdevdata(sd);
1404        int ret = 0;
1405
1406        dev->focus = OV5693_INVALID_CONFIG;
1407        if (!dev->platform_data) {
1408                dev_err(&client->dev,
1409                        "no camera_sensor_platform_data");
1410                return -ENODEV;
1411        }
1412
1413        ret = dev->platform_data->flisclk_ctrl(sd, 0);
1414        if (ret)
1415                dev_err(&client->dev, "flisclk failed\n");
1416
1417        /* gpio ctrl */
1418        ret = gpio_ctrl(sd, 0);
1419        if (ret) {
1420                ret = gpio_ctrl(sd, 0);
1421                if (ret)
1422                        dev_err(&client->dev, "gpio failed 2\n");
1423        }
1424
1425        /* power control */
1426        ret = power_ctrl(sd, 0);
1427        if (ret)
1428                dev_err(&client->dev, "vprog failed.\n");
1429
1430        return ret;
1431}
1432
1433static int power_up(struct v4l2_subdev *sd)
1434{
1435        static const int retry_count = 4;
1436        int i, ret;
1437
1438        for (i = 0; i < retry_count; i++) {
1439                ret = __power_up(sd);
1440                if (!ret)
1441                        return 0;
1442
1443                power_down(sd);
1444        }
1445        return ret;
1446}
1447
1448static int ov5693_s_power(struct v4l2_subdev *sd, int on)
1449{
1450        int ret;
1451
1452        pr_info("%s: on %d\n", __func__, on);
1453        if (on == 0)
1454                return power_down(sd);
1455        else {
1456                ret = power_up(sd);
1457                if (!ret) {
1458                        ret = ov5693_init(sd);
1459                        /* restore settings */
1460                        ov5693_res = ov5693_res_preview;
1461                        N_RES = N_RES_PREVIEW;
1462                }
1463        }
1464        return ret;
1465}
1466
1467/*
1468 * distance - calculate the distance
1469 * @res: resolution
1470 * @w: width
1471 * @h: height
1472 *
1473 * Get the gap between res_w/res_h and w/h.
1474 * distance = (res_w/res_h - w/h) / (w/h) * 8192
1475 * res->width/height smaller than w/h wouldn't be considered.
1476 * The gap of ratio larger than 1/8 wouldn't be considered.
1477 * Returns the value of gap or -1 if fail.
1478 */
1479#define LARGEST_ALLOWED_RATIO_MISMATCH 1024
1480static int distance(struct ov5693_resolution *res, u32 w, u32 h)
1481{
1482        int ratio;
1483        int distance;
1484
1485        if (w == 0 || h == 0 ||
1486            res->width < w || res->height < h)
1487                return -1;
1488
1489        ratio = res->width << 13;
1490        ratio /= w;
1491        ratio *= h;
1492        ratio /= res->height;
1493
1494        distance = abs(ratio - 8192);
1495
1496        if (distance > LARGEST_ALLOWED_RATIO_MISMATCH)
1497                return -1;
1498
1499        return distance;
1500}
1501
1502/* Return the nearest higher resolution index
1503 * Firstly try to find the approximate aspect ratio resolution
1504 * If we find multiple same AR resolutions, choose the
1505 * minimal size.
1506 */
1507static int nearest_resolution_index(int w, int h)
1508{
1509        int i;
1510        int idx = -1;
1511        int dist;
1512        int min_dist = INT_MAX;
1513        int min_res_w = INT_MAX;
1514        struct ov5693_resolution *tmp_res = NULL;
1515
1516        for (i = 0; i < N_RES; i++) {
1517                tmp_res = &ov5693_res[i];
1518                dist = distance(tmp_res, w, h);
1519                if (dist == -1)
1520                        continue;
1521                if (dist < min_dist) {
1522                        min_dist = dist;
1523                        idx = i;
1524                        min_res_w = ov5693_res[i].width;
1525                        continue;
1526                }
1527                if (dist == min_dist && ov5693_res[i].width < min_res_w)
1528                        idx = i;
1529        }
1530
1531        return idx;
1532}
1533
1534static int get_resolution_index(int w, int h)
1535{
1536        int i;
1537
1538        for (i = 0; i < N_RES; i++) {
1539                if (w != ov5693_res[i].width)
1540                        continue;
1541                if (h != ov5693_res[i].height)
1542                        continue;
1543
1544                return i;
1545        }
1546
1547        return -1;
1548}
1549
1550/* TODO: remove it. */
1551static int startup(struct v4l2_subdev *sd)
1552{
1553        struct ov5693_device *dev = to_ov5693_sensor(sd);
1554        struct i2c_client *client = v4l2_get_subdevdata(sd);
1555        int ret = 0;
1556
1557        ret = ov5693_write_reg(client, OV5693_8BIT,
1558                               OV5693_SW_RESET, 0x01);
1559        if (ret) {
1560                dev_err(&client->dev, "ov5693 reset err.\n");
1561                return ret;
1562        }
1563
1564        ret = ov5693_write_reg_array(client, ov5693_global_setting);
1565        if (ret) {
1566                dev_err(&client->dev, "ov5693 write register err.\n");
1567                return ret;
1568        }
1569
1570        ret = ov5693_write_reg_array(client, ov5693_res[dev->fmt_idx].regs);
1571        if (ret) {
1572                dev_err(&client->dev, "ov5693 write register err.\n");
1573                return ret;
1574        }
1575
1576        return ret;
1577}
1578
1579static int ov5693_set_fmt(struct v4l2_subdev *sd,
1580                          struct v4l2_subdev_state *sd_state,
1581                          struct v4l2_subdev_format *format)
1582{
1583        struct v4l2_mbus_framefmt *fmt = &format->format;
1584        struct ov5693_device *dev = to_ov5693_sensor(sd);
1585        struct i2c_client *client = v4l2_get_subdevdata(sd);
1586        struct camera_mipi_info *ov5693_info = NULL;
1587        int ret = 0;
1588        int idx;
1589
1590        if (format->pad)
1591                return -EINVAL;
1592        if (!fmt)
1593                return -EINVAL;
1594        ov5693_info = v4l2_get_subdev_hostdata(sd);
1595        if (!ov5693_info)
1596                return -EINVAL;
1597
1598        mutex_lock(&dev->input_lock);
1599        idx = nearest_resolution_index(fmt->width, fmt->height);
1600        if (idx == -1) {
1601                /* return the largest resolution */
1602                fmt->width = ov5693_res[N_RES - 1].width;
1603                fmt->height = ov5693_res[N_RES - 1].height;
1604        } else {
1605                fmt->width = ov5693_res[idx].width;
1606                fmt->height = ov5693_res[idx].height;
1607        }
1608
1609        fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1610        if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
1611                sd_state->pads->try_fmt = *fmt;
1612                mutex_unlock(&dev->input_lock);
1613                return 0;
1614        }
1615
1616        dev->fmt_idx = get_resolution_index(fmt->width, fmt->height);
1617        if (dev->fmt_idx == -1) {
1618                dev_err(&client->dev, "get resolution fail\n");
1619                mutex_unlock(&dev->input_lock);
1620                return -EINVAL;
1621        }
1622
1623        ret = startup(sd);
1624        if (ret) {
1625                int i = 0;
1626
1627                dev_err(&client->dev, "ov5693 startup err, retry to power up\n");
1628                for (i = 0; i < OV5693_POWER_UP_RETRY_NUM; i++) {
1629                        dev_err(&client->dev,
1630                                "ov5693 retry to power up %d/%d times, result: ",
1631                                i + 1, OV5693_POWER_UP_RETRY_NUM);
1632                        power_down(sd);
1633                        ret = power_up(sd);
1634                        if (!ret) {
1635                                mutex_unlock(&dev->input_lock);
1636                                ov5693_init(sd);
1637                                mutex_lock(&dev->input_lock);
1638                        } else {
1639                                dev_err(&client->dev, "power up failed, continue\n");
1640                                continue;
1641                        }
1642                        ret = startup(sd);
1643                        if (ret) {
1644                                dev_err(&client->dev, " startup FAILED!\n");
1645                        } else {
1646                                dev_err(&client->dev, " startup SUCCESS!\n");
1647                                break;
1648                        }
1649                }
1650        }
1651
1652        /*
1653         * After sensor settings are set to HW, sometimes stream is started.
1654         * This would cause ISP timeout because ISP is not ready to receive
1655         * data yet. So add stop streaming here.
1656         */
1657        ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM,
1658                               OV5693_STOP_STREAMING);
1659        if (ret)
1660                dev_warn(&client->dev, "ov5693 stream off err\n");
1661
1662        ret = ov5693_get_intg_factor(client, ov5693_info,
1663                                     &ov5693_res[dev->fmt_idx]);
1664        if (ret) {
1665                dev_err(&client->dev, "failed to get integration_factor\n");
1666                goto err;
1667        }
1668
1669        ov5693_info->metadata_width = fmt->width * 10 / 8;
1670        ov5693_info->metadata_height = 1;
1671        ov5693_info->metadata_effective_width = &ov5693_embedded_effective_size;
1672
1673err:
1674        mutex_unlock(&dev->input_lock);
1675        return ret;
1676}
1677
1678static int ov5693_get_fmt(struct v4l2_subdev *sd,
1679                          struct v4l2_subdev_state *sd_state,
1680                          struct v4l2_subdev_format *format)
1681{
1682        struct v4l2_mbus_framefmt *fmt = &format->format;
1683        struct ov5693_device *dev = to_ov5693_sensor(sd);
1684
1685        if (format->pad)
1686                return -EINVAL;
1687
1688        if (!fmt)
1689                return -EINVAL;
1690
1691        fmt->width = ov5693_res[dev->fmt_idx].width;
1692        fmt->height = ov5693_res[dev->fmt_idx].height;
1693        fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1694
1695        return 0;
1696}
1697
1698static int ov5693_detect(struct i2c_client *client)
1699{
1700        struct i2c_adapter *adapter = client->adapter;
1701        u16 high, low;
1702        int ret;
1703        u16 id;
1704        u8 revision;
1705
1706        if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
1707                return -ENODEV;
1708
1709        ret = ov5693_read_reg(client, OV5693_8BIT,
1710                              OV5693_SC_CMMN_CHIP_ID_H, &high);
1711        if (ret) {
1712                dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
1713                return -ENODEV;
1714        }
1715        ret = ov5693_read_reg(client, OV5693_8BIT,
1716                              OV5693_SC_CMMN_CHIP_ID_L, &low);
1717        id = ((((u16)high) << 8) | (u16)low);
1718
1719        if (id != OV5693_ID) {
1720                dev_err(&client->dev, "sensor ID error 0x%x\n", id);
1721                return -ENODEV;
1722        }
1723
1724        ret = ov5693_read_reg(client, OV5693_8BIT,
1725                              OV5693_SC_CMMN_SUB_ID, &high);
1726        revision = (u8)high & 0x0f;
1727
1728        dev_dbg(&client->dev, "sensor_revision = 0x%x\n", revision);
1729        dev_dbg(&client->dev, "detect ov5693 success\n");
1730        return 0;
1731}
1732
1733static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
1734{
1735        struct ov5693_device *dev = to_ov5693_sensor(sd);
1736        struct i2c_client *client = v4l2_get_subdevdata(sd);
1737        int ret;
1738
1739        mutex_lock(&dev->input_lock);
1740
1741        ret = ov5693_write_reg(client, OV5693_8BIT, OV5693_SW_STREAM,
1742                               enable ? OV5693_START_STREAMING :
1743                               OV5693_STOP_STREAMING);
1744
1745        mutex_unlock(&dev->input_lock);
1746
1747        return ret;
1748}
1749
1750static int ov5693_s_config(struct v4l2_subdev *sd,
1751                           int irq, void *platform_data)
1752{
1753        struct ov5693_device *dev = to_ov5693_sensor(sd);
1754        struct i2c_client *client = v4l2_get_subdevdata(sd);
1755        int ret = 0;
1756
1757        if (!platform_data)
1758                return -ENODEV;
1759
1760        dev->platform_data =
1761            (struct camera_sensor_platform_data *)platform_data;
1762
1763        mutex_lock(&dev->input_lock);
1764        /* power off the module, then power on it in future
1765         * as first power on by board may not fulfill the
1766         * power on sequqence needed by the module
1767         */
1768        ret = power_down(sd);
1769        if (ret) {
1770                dev_err(&client->dev, "ov5693 power-off err.\n");
1771                goto fail_power_off;
1772        }
1773
1774        ret = power_up(sd);
1775        if (ret) {
1776                dev_err(&client->dev, "ov5693 power-up err.\n");
1777                goto fail_power_on;
1778        }
1779
1780        if (!dev->vcm)
1781                dev->vcm = vcm_detect(client);
1782
1783        ret = dev->platform_data->csi_cfg(sd, 1);
1784        if (ret)
1785                goto fail_csi_cfg;
1786
1787        /* config & detect sensor */
1788        ret = ov5693_detect(client);
1789        if (ret) {
1790                dev_err(&client->dev, "ov5693_detect err s_config.\n");
1791                goto fail_csi_cfg;
1792        }
1793
1794        dev->otp_data = ov5693_otp_read(sd);
1795
1796        /* turn off sensor, after probed */
1797        ret = power_down(sd);
1798        if (ret) {
1799                dev_err(&client->dev, "ov5693 power-off err.\n");
1800                goto fail_csi_cfg;
1801        }
1802        mutex_unlock(&dev->input_lock);
1803
1804        return ret;
1805
1806fail_csi_cfg:
1807        dev->platform_data->csi_cfg(sd, 0);
1808fail_power_on:
1809        power_down(sd);
1810        dev_err(&client->dev, "sensor power-gating failed\n");
1811fail_power_off:
1812        mutex_unlock(&dev->input_lock);
1813        return ret;
1814}
1815
1816static int ov5693_g_frame_interval(struct v4l2_subdev *sd,
1817                                   struct v4l2_subdev_frame_interval *interval)
1818{
1819        struct ov5693_device *dev = to_ov5693_sensor(sd);
1820
1821        interval->interval.numerator = 1;
1822        interval->interval.denominator = ov5693_res[dev->fmt_idx].fps;
1823
1824        return 0;
1825}
1826
1827static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
1828                                 struct v4l2_subdev_state *sd_state,
1829                                 struct v4l2_subdev_mbus_code_enum *code)
1830{
1831        if (code->index >= MAX_FMTS)
1832                return -EINVAL;
1833
1834        code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1835        return 0;
1836}
1837
1838static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
1839                                  struct v4l2_subdev_state *sd_state,
1840                                  struct v4l2_subdev_frame_size_enum *fse)
1841{
1842        int index = fse->index;
1843
1844        if (index >= N_RES)
1845                return -EINVAL;
1846
1847        fse->min_width = ov5693_res[index].width;
1848        fse->min_height = ov5693_res[index].height;
1849        fse->max_width = ov5693_res[index].width;
1850        fse->max_height = ov5693_res[index].height;
1851
1852        return 0;
1853}
1854
1855static const struct v4l2_subdev_video_ops ov5693_video_ops = {
1856        .s_stream = ov5693_s_stream,
1857        .g_frame_interval = ov5693_g_frame_interval,
1858};
1859
1860static const struct v4l2_subdev_core_ops ov5693_core_ops = {
1861        .s_power = ov5693_s_power,
1862        .ioctl = ov5693_ioctl,
1863};
1864
1865static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
1866        .enum_mbus_code = ov5693_enum_mbus_code,
1867        .enum_frame_size = ov5693_enum_frame_size,
1868        .get_fmt = ov5693_get_fmt,
1869        .set_fmt = ov5693_set_fmt,
1870};
1871
1872static const struct v4l2_subdev_ops ov5693_ops = {
1873        .core = &ov5693_core_ops,
1874        .video = &ov5693_video_ops,
1875        .pad = &ov5693_pad_ops,
1876};
1877
1878static int ov5693_remove(struct i2c_client *client)
1879{
1880        struct v4l2_subdev *sd = i2c_get_clientdata(client);
1881        struct ov5693_device *dev = to_ov5693_sensor(sd);
1882
1883        dev_dbg(&client->dev, "ov5693_remove...\n");
1884
1885        dev->platform_data->csi_cfg(sd, 0);
1886
1887        v4l2_device_unregister_subdev(sd);
1888
1889        atomisp_gmin_remove_subdev(sd);
1890
1891        media_entity_cleanup(&dev->sd.entity);
1892        v4l2_ctrl_handler_free(&dev->ctrl_handler);
1893        kfree(dev);
1894
1895        return 0;
1896}
1897
1898static int ov5693_probe(struct i2c_client *client)
1899{
1900        struct ov5693_device *dev;
1901        int i2c;
1902        int ret;
1903        void *pdata;
1904        unsigned int i;
1905
1906        /*
1907         * Firmware workaround: Some modules use a "secondary default"
1908         * address of 0x10 which doesn't appear on schematics, and
1909         * some BIOS versions haven't gotten the memo.  Work around
1910         * via config.
1911         */
1912        i2c = gmin_get_var_int(&client->dev, false, "I2CAddr", -1);
1913        if (i2c != -1) {
1914                dev_info(&client->dev,
1915                         "Overriding firmware-provided I2C address (0x%x) with 0x%x\n",
1916                         client->addr, i2c);
1917                client->addr = i2c;
1918        }
1919
1920        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1921        if (!dev)
1922                return -ENOMEM;
1923
1924        mutex_init(&dev->input_lock);
1925
1926        dev->fmt_idx = 0;
1927        v4l2_i2c_subdev_init(&dev->sd, client, &ov5693_ops);
1928
1929        pdata = gmin_camera_platform_data(&dev->sd,
1930                                          ATOMISP_INPUT_FORMAT_RAW_10,
1931                                          atomisp_bayer_order_bggr);
1932        if (!pdata) {
1933                ret = -EINVAL;
1934                goto out_free;
1935        }
1936
1937        ret = ov5693_s_config(&dev->sd, client->irq, pdata);
1938        if (ret)
1939                goto out_free;
1940
1941        ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA);
1942        if (ret)
1943                goto out_free;
1944
1945        dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1946        dev->pad.flags = MEDIA_PAD_FL_SOURCE;
1947        dev->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
1948        dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1949        ret =
1950            v4l2_ctrl_handler_init(&dev->ctrl_handler,
1951                                   ARRAY_SIZE(ov5693_controls));
1952        if (ret) {
1953                ov5693_remove(client);
1954                return ret;
1955        }
1956
1957        for (i = 0; i < ARRAY_SIZE(ov5693_controls); i++)
1958                v4l2_ctrl_new_custom(&dev->ctrl_handler, &ov5693_controls[i],
1959                                     NULL);
1960
1961        if (dev->ctrl_handler.error) {
1962                ov5693_remove(client);
1963                return dev->ctrl_handler.error;
1964        }
1965
1966        /* Use same lock for controls as for everything else. */
1967        dev->ctrl_handler.lock = &dev->input_lock;
1968        dev->sd.ctrl_handler = &dev->ctrl_handler;
1969
1970        ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad);
1971        if (ret)
1972                ov5693_remove(client);
1973
1974        return ret;
1975out_free:
1976        v4l2_device_unregister_subdev(&dev->sd);
1977        kfree(dev);
1978        return ret;
1979}
1980
1981static const struct acpi_device_id ov5693_acpi_match[] = {
1982        {"INT33BE"},
1983        {},
1984};
1985MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
1986
1987static struct i2c_driver ov5693_driver = {
1988        .driver = {
1989                .name = "ov5693",
1990                .acpi_match_table = ov5693_acpi_match,
1991        },
1992        .probe_new = ov5693_probe,
1993        .remove = ov5693_remove,
1994};
1995module_i2c_driver(ov5693_driver);
1996
1997MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
1998MODULE_LICENSE("GPL");
1999