// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2023 Jacopo Mondi <jacopo.mondi@ideasonboard.com>
 * Copyright (C) 2022 Nicholas Roth <nicholas@rothemail.net>
 * Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
 */

#include <linux/unaligned.h>

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>

#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>

#define OV8858_LINK_FREQ                360000000U
#define OV8858_XVCLK_FREQ               24000000

#define OV8858_REG_SIZE_SHIFT           16
#define OV8858_REG_ADDR_MASK            0xffff
#define OV8858_REG_8BIT(n)              ((1U << OV8858_REG_SIZE_SHIFT) | (n))
#define OV8858_REG_16BIT(n)             ((2U << OV8858_REG_SIZE_SHIFT) | (n))
#define OV8858_REG_24BIT(n)             ((3U << OV8858_REG_SIZE_SHIFT) | (n))

#define OV8858_REG_SC_CTRL0100          OV8858_REG_8BIT(0x0100)
#define OV8858_MODE_SW_STANDBY          0x0
#define OV8858_MODE_STREAMING           0x1

#define OV8858_REG_CHIP_ID              OV8858_REG_24BIT(0x300a)
#define OV8858_CHIP_ID                  0x008858

#define OV8858_REG_SUB_ID               OV8858_REG_8BIT(0x302a)
#define OV8858_R1A                      0xb0
#define OV8858_R2A                      0xb2

#define OV8858_REG_LONG_EXPO            OV8858_REG_24BIT(0x3500)
#define OV8858_EXPOSURE_MIN             4
#define OV8858_EXPOSURE_STEP            1
#define OV8858_EXPOSURE_MARGIN          4

#define OV8858_REG_LONG_GAIN            OV8858_REG_16BIT(0x3508)
#define OV8858_LONG_GAIN_MIN            0x0
#define OV8858_LONG_GAIN_MAX            0x7ff
#define OV8858_LONG_GAIN_STEP           1
#define OV8858_LONG_GAIN_DEFAULT        0x80

#define OV8858_REG_LONG_DIGIGAIN        OV8858_REG_16BIT(0x350a)
#define OV8858_LONG_DIGIGAIN_H_MASK     0x3fc0
#define OV8858_LONG_DIGIGAIN_L_MASK     0x3f
#define OV8858_LONG_DIGIGAIN_H_SHIFT    2
#define OV8858_LONG_DIGIGAIN_MIN        0x0
#define OV8858_LONG_DIGIGAIN_MAX        0x3fff
#define OV8858_LONG_DIGIGAIN_STEP       1
#define OV8858_LONG_DIGIGAIN_DEFAULT    0x200

#define OV8858_REG_VTS                  OV8858_REG_16BIT(0x380e)
#define OV8858_VTS_MAX                  0x7fff

#define OV8858_REG_TEST_PATTERN         OV8858_REG_8BIT(0x5e00)
#define OV8858_TEST_PATTERN_ENABLE      0x80
#define OV8858_TEST_PATTERN_DISABLE     0x0

#define REG_NULL                        0xffff

static const char * const ov8858_supply_names[] = {
        "avdd",         /* Analog power */
        "dovdd",        /* Digital I/O power */
        "dvdd",         /* Digital core power */
};

struct regval {
        u16 addr;
        u8 val;
};

struct regval_modes {
        const struct regval *mode_2lanes;
        const struct regval *mode_4lanes;
};

struct ov8858_mode {
        u32 width;
        u32 height;
        u32 hts_def;
        u32 vts_def;
        u32 exp_def;
        const struct regval_modes reg_modes;
};

struct ov8858 {
        struct clk              *xvclk;
        struct gpio_desc        *reset_gpio;
        struct gpio_desc        *pwdn_gpio;
        struct regulator_bulk_data supplies[ARRAY_SIZE(ov8858_supply_names)];

        struct v4l2_subdev      subdev;
        struct media_pad        pad;

        struct v4l2_ctrl_handler ctrl_handler;
        struct v4l2_ctrl        *exposure;
        struct v4l2_ctrl        *hblank;
        struct v4l2_ctrl        *vblank;

        const struct regval     *global_regs;

        unsigned int            num_lanes;
};

static inline struct ov8858 *sd_to_ov8858(struct v4l2_subdev *sd)
{
        return container_of(sd, struct ov8858, subdev);
}

static const struct regval ov8858_global_regs_r1a[] = {
        {0x0100, 0x00},
        {0x0100, 0x00},
        {0x0100, 0x00},
        {0x0100, 0x00},
        {0x0302, 0x1e},
        {0x0303, 0x00},
        {0x0304, 0x03},
        {0x030e, 0x00},
        {0x030f, 0x09},
        {0x0312, 0x01},
        {0x031e, 0x0c},
        {0x3600, 0x00},
        {0x3601, 0x00},
        {0x3602, 0x00},
        {0x3603, 0x00},
        {0x3604, 0x22},
        {0x3605, 0x30},
        {0x3606, 0x00},
        {0x3607, 0x20},
        {0x3608, 0x11},
        {0x3609, 0x28},
        {0x360a, 0x00},
        {0x360b, 0x06},
        {0x360c, 0xdc},
        {0x360d, 0x40},
        {0x360e, 0x0c},
        {0x360f, 0x20},
        {0x3610, 0x07},
        {0x3611, 0x20},
        {0x3612, 0x88},
        {0x3613, 0x80},
        {0x3614, 0x58},
        {0x3615, 0x00},
        {0x3616, 0x4a},
        {0x3617, 0xb0},
        {0x3618, 0x56},
        {0x3619, 0x70},
        {0x361a, 0x99},
        {0x361b, 0x00},
        {0x361c, 0x07},
        {0x361d, 0x00},
        {0x361e, 0x00},
        {0x361f, 0x00},
        {0x3638, 0xff},
        {0x3633, 0x0c},
        {0x3634, 0x0c},
        {0x3635, 0x0c},
        {0x3636, 0x0c},
        {0x3645, 0x13},
        {0x3646, 0x83},
        {0x364a, 0x07},
        {0x3015, 0x01},
        {0x3018, 0x32},
        {0x3020, 0x93},
        {0x3022, 0x01},
        {0x3031, 0x0a},
        {0x3034, 0x00},
        {0x3106, 0x01},
        {0x3305, 0xf1},
        {0x3308, 0x00},
        {0x3309, 0x28},
        {0x330a, 0x00},
        {0x330b, 0x20},
        {0x330c, 0x00},
        {0x330d, 0x00},
        {0x330e, 0x00},
        {0x330f, 0x40},
        {0x3307, 0x04},
        {0x3500, 0x00},
        {0x3501, 0x4d},
        {0x3502, 0x40},
        {0x3503, 0x00},
        {0x3505, 0x80},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350c, 0x00},
        {0x350d, 0x80},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3700, 0x18},
        {0x3701, 0x0c},
        {0x3702, 0x28},
        {0x3703, 0x19},
        {0x3704, 0x14},
        {0x3705, 0x00},
        {0x3706, 0x35},
        {0x3707, 0x04},
        {0x3708, 0x24},
        {0x3709, 0x33},
        {0x370a, 0x00},
        {0x370b, 0xb5},
        {0x370c, 0x04},
        {0x3718, 0x12},
        {0x3719, 0x31},
        {0x3712, 0x42},
        {0x3714, 0x24},
        {0x371e, 0x19},
        {0x371f, 0x40},
        {0x3720, 0x05},
        {0x3721, 0x05},
        {0x3724, 0x06},
        {0x3725, 0x01},
        {0x3726, 0x06},
        {0x3728, 0x05},
        {0x3729, 0x02},
        {0x372a, 0x03},
        {0x372b, 0x53},
        {0x372c, 0xa3},
        {0x372d, 0x53},
        {0x372e, 0x06},
        {0x372f, 0x10},
        {0x3730, 0x01},
        {0x3731, 0x06},
        {0x3732, 0x14},
        {0x3733, 0x10},
        {0x3734, 0x40},
        {0x3736, 0x20},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373e, 0x03},
        {0x3755, 0x10},
        {0x3758, 0x00},
        {0x3759, 0x4c},
        {0x375a, 0x06},
        {0x375b, 0x13},
        {0x375c, 0x20},
        {0x375d, 0x02},
        {0x375e, 0x00},
        {0x375f, 0x14},
        {0x3768, 0x22},
        {0x3769, 0x44},
        {0x376a, 0x44},
        {0x3761, 0x00},
        {0x3762, 0x00},
        {0x3763, 0x00},
        {0x3766, 0xff},
        {0x376b, 0x00},
        {0x3772, 0x23},
        {0x3773, 0x02},
        {0x3774, 0x16},
        {0x3775, 0x12},
        {0x3776, 0x04},
        {0x3777, 0x00},
        {0x3778, 0x1b},
        {0x37a0, 0x44},
        {0x37a1, 0x3d},
        {0x37a2, 0x3d},
        {0x37a3, 0x00},
        {0x37a4, 0x00},
        {0x37a5, 0x00},
        {0x37a6, 0x00},
        {0x37a7, 0x44},
        {0x37a8, 0x4c},
        {0x37a9, 0x4c},
        {0x3760, 0x00},
        {0x376f, 0x01},
        {0x37aa, 0x44},
        {0x37ab, 0x2e},
        {0x37ac, 0x2e},
        {0x37ad, 0x33},
        {0x37ae, 0x0d},
        {0x37af, 0x0d},
        {0x37b0, 0x00},
        {0x37b1, 0x00},
        {0x37b2, 0x00},
        {0x37b3, 0x42},
        {0x37b4, 0x42},
        {0x37b5, 0x33},
        {0x37b6, 0x00},
        {0x37b7, 0x00},
        {0x37b8, 0x00},
        {0x37b9, 0xff},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x0c},
        {0x3804, 0x0c},
        {0x3805, 0xd3},
        {0x3806, 0x09},
        {0x3807, 0xa3},
        {0x3808, 0x06},
        {0x3809, 0x60},
        {0x380a, 0x04},
        {0x380b, 0xc8},
        {0x380c, 0x07},
        {0x380d, 0x88},
        {0x380e, 0x04},
        {0x380f, 0xdc},
        {0x3810, 0x00},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x03},
        {0x3815, 0x01},
        {0x3820, 0x00},
        {0x3821, 0x67},
        {0x382a, 0x03},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x18},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3d85, 0x14},
        {0x3f08, 0x08},
        {0x3f0a, 0x80},
        {0x4000, 0xf1},
        {0x4001, 0x10},
        {0x4005, 0x10},
        {0x4002, 0x27},
        {0x4009, 0x81},
        {0x400b, 0x0c},
        {0x401b, 0x00},
        {0x401d, 0x00},
        {0x4020, 0x00},
        {0x4021, 0x04},
        {0x4022, 0x04},
        {0x4023, 0xb9},
        {0x4024, 0x05},
        {0x4025, 0x2a},
        {0x4026, 0x05},
        {0x4027, 0x2b},
        {0x4028, 0x00},
        {0x4029, 0x02},
        {0x402a, 0x04},
        {0x402b, 0x04},
        {0x402c, 0x02},
        {0x402d, 0x02},
        {0x402e, 0x08},
        {0x402f, 0x02},
        {0x401f, 0x00},
        {0x4034, 0x3f},
        {0x403d, 0x04},
        {0x4300, 0xff},
        {0x4301, 0x00},
        {0x4302, 0x0f},
        {0x4316, 0x00},
        {0x4500, 0x38},
        {0x4503, 0x18},
        {0x4600, 0x00},
        {0x4601, 0xcb},
        {0x481f, 0x32},
        {0x4837, 0x16},
        {0x4850, 0x10},
        {0x4851, 0x32},
        {0x4b00, 0x2a},
        {0x4b0d, 0x00},
        {0x4d00, 0x04},
        {0x4d01, 0x18},
        {0x4d02, 0xc3},
        {0x4d03, 0xff},
        {0x4d04, 0xff},
        {0x4d05, 0xff},
        {0x5000, 0x7e},
        {0x5001, 0x01},
        {0x5002, 0x08},
        {0x5003, 0x20},
        {0x5046, 0x12},
        {0x5901, 0x00},
        {0x5e00, 0x00},
        {0x5e01, 0x41},
        {0x382d, 0x7f},
        {0x4825, 0x3a},
        {0x4826, 0x40},
        {0x4808, 0x25},
        {REG_NULL, 0x00},
};

static const struct regval ov8858_global_regs_r2a_2lane[] = {
        /*
         * MIPI=720Mbps, SysClk=144Mhz,Dac Clock=360Mhz.
         * v00_01_00 (05/29/2014) : initial setting
         * AM19 : 3617 <- 0xC0
         * AM20 : change FWC_6K_EN to be default 0x3618=0x5a
         */
        {0x0103, 0x01}, /* software reset */
        {0x0100, 0x00}, /* software standby */
        {0x0302, 0x1e}, /* pll1_multi */
        {0x0303, 0x00}, /* pll1_divm */
        {0x0304, 0x03}, /* pll1_div_mipi */
        {0x030e, 0x02}, /* pll2_rdiv */
        {0x030f, 0x04}, /* pll2_divsp */
        {0x0312, 0x03}, /* pll2_pre_div0, pll2_r_divdac */
        {0x031e, 0x0c}, /* pll1_no_lat */
        {0x3600, 0x00},
        {0x3601, 0x00},
        {0x3602, 0x00},
        {0x3603, 0x00},
        {0x3604, 0x22},
        {0x3605, 0x20},
        {0x3606, 0x00},
        {0x3607, 0x20},
        {0x3608, 0x11},
        {0x3609, 0x28},
        {0x360a, 0x00},
        {0x360b, 0x05},
        {0x360c, 0xd4},
        {0x360d, 0x40},
        {0x360e, 0x0c},
        {0x360f, 0x20},
        {0x3610, 0x07},
        {0x3611, 0x20},
        {0x3612, 0x88},
        {0x3613, 0x80},
        {0x3614, 0x58},
        {0x3615, 0x00},
        {0x3616, 0x4a},
        {0x3617, 0x90},
        {0x3618, 0x5a},
        {0x3619, 0x70},
        {0x361a, 0x99},
        {0x361b, 0x0a},
        {0x361c, 0x07},
        {0x361d, 0x00},
        {0x361e, 0x00},
        {0x361f, 0x00},
        {0x3638, 0xff},
        {0x3633, 0x0f},
        {0x3634, 0x0f},
        {0x3635, 0x0f},
        {0x3636, 0x12},
        {0x3645, 0x13},
        {0x3646, 0x83},
        {0x364a, 0x07},
        {0x3015, 0x00},
        {0x3018, 0x32}, /* MIPI 2 lane */
        {0x3020, 0x93}, /* Clock switch output normal, pclk_div =/1 */
        {0x3022, 0x01}, /* pd_mipi enable when rst_sync */
        {0x3031, 0x0a}, /* MIPI 10-bit mode */
        {0x3034, 0x00},
        {0x3106, 0x01}, /* sclk_div, sclk_pre_div */
        {0x3305, 0xf1},
        {0x3308, 0x00},
        {0x3309, 0x28},
        {0x330a, 0x00},
        {0x330b, 0x20},
        {0x330c, 0x00},
        {0x330d, 0x00},
        {0x330e, 0x00},
        {0x330f, 0x40},
        {0x3307, 0x04},
        {0x3500, 0x00}, /* exposure H */
        {0x3501, 0x4d}, /* exposure M */
        {0x3502, 0x40}, /* exposure L */
        {0x3503, 0x80}, /* gain delay ?, exposure delay 1 frame, real gain */
        {0x3505, 0x80}, /* gain option */
        {0x3508, 0x02}, /* gain H */
        {0x3509, 0x00}, /* gain L */
        {0x350c, 0x00}, /* short gain H */
        {0x350d, 0x80}, /* short gain L */
        {0x3510, 0x00}, /* short exposure H */
        {0x3511, 0x02}, /* short exposure M */
        {0x3512, 0x00}, /* short exposure L */
        {0x3700, 0x18},
        {0x3701, 0x0c},
        {0x3702, 0x28},
        {0x3703, 0x19},
        {0x3704, 0x14},
        {0x3705, 0x00},
        {0x3706, 0x82},
        {0x3707, 0x04},
        {0x3708, 0x24},
        {0x3709, 0x33},
        {0x370a, 0x01},
        {0x370b, 0x82},
        {0x370c, 0x04},
        {0x3718, 0x12},
        {0x3719, 0x31},
        {0x3712, 0x42},
        {0x3714, 0x24},
        {0x371e, 0x19},
        {0x371f, 0x40},
        {0x3720, 0x05},
        {0x3721, 0x05},
        {0x3724, 0x06},
        {0x3725, 0x01},
        {0x3726, 0x06},
        {0x3728, 0x05},
        {0x3729, 0x02},
        {0x372a, 0x03},
        {0x372b, 0x53},
        {0x372c, 0xa3},
        {0x372d, 0x53},
        {0x372e, 0x06},
        {0x372f, 0x10},
        {0x3730, 0x01},
        {0x3731, 0x06},
        {0x3732, 0x14},
        {0x3733, 0x10},
        {0x3734, 0x40},
        {0x3736, 0x20},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373e, 0x03},
        {0x3750, 0x0a},
        {0x3751, 0x0e},
        {0x3755, 0x10},
        {0x3758, 0x00},
        {0x3759, 0x4c},
        {0x375a, 0x06},
        {0x375b, 0x13},
        {0x375c, 0x20},
        {0x375d, 0x02},
        {0x375e, 0x00},
        {0x375f, 0x14},
        {0x3768, 0x22},
        {0x3769, 0x44},
        {0x376a, 0x44},
        {0x3761, 0x00},
        {0x3762, 0x00},
        {0x3763, 0x00},
        {0x3766, 0xff},
        {0x376b, 0x00},
        {0x3772, 0x23},
        {0x3773, 0x02},
        {0x3774, 0x16},
        {0x3775, 0x12},
        {0x3776, 0x04},
        {0x3777, 0x00},
        {0x3778, 0x17},
        {0x37a0, 0x44},
        {0x37a1, 0x3d},
        {0x37a2, 0x3d},
        {0x37a3, 0x00},
        {0x37a4, 0x00},
        {0x37a5, 0x00},
        {0x37a6, 0x00},
        {0x37a7, 0x44},
        {0x37a8, 0x4c},
        {0x37a9, 0x4c},
        {0x3760, 0x00},
        {0x376f, 0x01},
        {0x37aa, 0x44},
        {0x37ab, 0x2e},
        {0x37ac, 0x2e},
        {0x37ad, 0x33},
        {0x37ae, 0x0d},
        {0x37af, 0x0d},
        {0x37b0, 0x00},
        {0x37b1, 0x00},
        {0x37b2, 0x00},
        {0x37b3, 0x42},
        {0x37b4, 0x42},
        {0x37b5, 0x31},
        {0x37b6, 0x00},
        {0x37b7, 0x00},
        {0x37b8, 0x00},
        {0x37b9, 0xff},
        {0x3800, 0x00}, /* x start H */
        {0x3801, 0x0c}, /* x start L */
        {0x3802, 0x00}, /* y start H */
        {0x3803, 0x0c}, /* y start L */
        {0x3804, 0x0c}, /* x end H */
        {0x3805, 0xd3}, /* x end L */
        {0x3806, 0x09}, /* y end H */
        {0x3807, 0xa3}, /* y end L */
        {0x3808, 0x06}, /* x output size H */
        {0x3809, 0x60}, /* x output size L */
        {0x380a, 0x04}, /* y output size H */
        {0x380b, 0xc8}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x88}, /* HTS L */
        {0x380e, 0x04}, /* VTS H */
        {0x380f, 0xdc}, /* VTS L */
        {0x3810, 0x00}, /* ISP x win H */
        {0x3811, 0x04}, /* ISP x win L */
        {0x3813, 0x02}, /* ISP y win L */
        {0x3814, 0x03}, /* x odd inc */
        {0x3815, 0x01}, /* x even inc */
        {0x3820, 0x00}, /* vflip off */
        {0x3821, 0x67}, /* mirror on, bin on */
        {0x382a, 0x03}, /* y odd inc */
        {0x382b, 0x01}, /* y even inc */
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x18},
        {0x3841, 0xff}, /* window auto size enable */
        {0x3846, 0x48},
        {0x3d85, 0x16}, /* OTP power up load data enable with BIST */
        {0x3d8c, 0x73}, /* OTP setting start High */
        {0x3d8d, 0xde}, /* OTP setting start Low */
        {0x3f08, 0x08},
        {0x3f0a, 0x00},
        {0x4000, 0xf1}, /* out_range_trig, format_chg_trig */
        {0x4001, 0x10}, /* total 128 black column */
        {0x4005, 0x10}, /* BLC target L */
        {0x4002, 0x27}, /* value used to limit BLC offset */
        {0x4009, 0x81}, /* final BLC offset limitation enable */
        {0x400b, 0x0c}, /* DCBLC on, DCBLC manual mode on */
        {0x401b, 0x00}, /* zero line R coefficient */
        {0x401d, 0x00}, /* zoro line T coefficient */
        {0x4020, 0x00}, /* Anchor left start H */
        {0x4021, 0x04}, /* Anchor left start L */
        {0x4022, 0x06}, /* Anchor left end H */
        {0x4023, 0x00}, /* Anchor left end L */
        {0x4024, 0x0f}, /* Anchor right start H */
        {0x4025, 0x2a}, /* Anchor right start L */
        {0x4026, 0x0f}, /* Anchor right end H */
        {0x4027, 0x2b}, /* Anchor right end L */
        {0x4028, 0x00}, /* top zero line start */
        {0x4029, 0x02}, /* top zero line number */
        {0x402a, 0x04}, /* top black line start */
        {0x402b, 0x04}, /* top black line number */
        {0x402c, 0x00}, /* bottom zero line start */
        {0x402d, 0x02}, /* bottom zoro line number */
        {0x402e, 0x04}, /* bottom black line start */
        {0x402f, 0x04}, /* bottom black line number */
        {0x401f, 0x00}, /* interpolation x/y disable, Anchor one disable */
        {0x4034, 0x3f},
        {0x403d, 0x04}, /* md_precision_en */
        {0x4300, 0xff}, /* clip max H */
        {0x4301, 0x00}, /* clip min H */
        {0x4302, 0x0f}, /* clip min L, clip max L */
        {0x4316, 0x00},
        {0x4500, 0x58},
        {0x4503, 0x18},
        {0x4600, 0x00},
        {0x4601, 0xcb},
        {0x481f, 0x32}, /* clk prepare min */
        {0x4837, 0x16}, /* global timing */
        {0x4850, 0x10}, /* lane 1 = 1, lane 0 = 0 */
        {0x4851, 0x32}, /* lane 3 = 3, lane 2 = 2 */
        {0x4b00, 0x2a},
        {0x4b0d, 0x00},
        {0x4d00, 0x04}, /* temperature sensor */
        {0x4d01, 0x18},
        {0x4d02, 0xc3},
        {0x4d03, 0xff},
        {0x4d04, 0xff},
        {0x4d05, 0xff}, /* temperature sensor */
        {0x5000, 0xfe}, /* lenc on, slave/master AWB gain/statistics enable */
        {0x5001, 0x01}, /* BLC on */
        {0x5002, 0x08}, /* H scale off, WBMATCH off, OTP_DPC */
        {0x5003, 0x20}, /* DPC_DBC buffer control enable, WB */
        {0x501e, 0x93}, /* enable digital gain */
        {0x5046, 0x12},
        {0x5780, 0x3e}, /* DPC */
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x00},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x04},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3}, /* DPC */
        {0x5871, 0x0d}, /* Lenc */
        {0x5870, 0x18},
        {0x586e, 0x10},
        {0x586f, 0x08},
        {0x58f7, 0x01},
        {0x58f8, 0x3d}, /* Lenc */
        {0x5901, 0x00}, /* H skip off, V skip off */
        {0x5b00, 0x02}, /* OTP DPC start address */
        {0x5b01, 0x10}, /* OTP DPC start address */
        {0x5b02, 0x03}, /* OTP DPC end address */
        {0x5b03, 0xcf}, /* OTP DPC end address */
        {0x5b05, 0x6c}, /* recover method = 2b11, */
        {0x5e00, 0x00}, /* use 0x3ff to test pattern off */
        {0x5e01, 0x41}, /* window cut enable */
        {0x382d, 0x7f},
        {0x4825, 0x3a}, /* lpx_p_min */
        {0x4826, 0x40}, /* hs_prepare_min */
        {0x4808, 0x25}, /* wake up delay in 1/1024 s */
        {0x3763, 0x18},
        {0x3768, 0xcc},
        {0x470b, 0x28},
        {0x4202, 0x00},
        {0x400d, 0x10}, /* BLC offset trigger L */
        {0x4040, 0x04}, /* BLC gain th2 */
        {0x403e, 0x04}, /* BLC gain th1 */
        {0x4041, 0xc6}, /* BLC */
        {0x3007, 0x80},
        {0x400a, 0x01},
        {REG_NULL, 0x00},
};

/*
 * Xclk 24Mhz
 * max_framerate 30fps
 * mipi_datarate per lane 720Mbps
 */
static const struct regval ov8858_1632x1224_regs_2lane[] = {
        /*
         * MIPI=720Mbps, SysClk=144Mhz,Dac Clock=360Mhz.
         * v00_01_00 (05/29/2014) : initial setting
         * AM19 : 3617 <- 0xC0
         * AM20 : change FWC_6K_EN to be default 0x3618=0x5a
         */
        {0x0100, 0x00},
        {0x3501, 0x4d}, /* exposure M */
        {0x3502, 0x40}, /* exposure L */
        {0x3778, 0x17},
        {0x3808, 0x06}, /* x output size H */
        {0x3809, 0x60}, /* x output size L */
        {0x380a, 0x04}, /* y output size H */
        {0x380b, 0xc8}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x88}, /* HTS L */
        {0x380e, 0x04}, /* VTS H */
        {0x380f, 0xdc}, /* VTS L */
        {0x3814, 0x03}, /* x odd inc */
        {0x3821, 0x67}, /* mirror on, bin on */
        {0x382a, 0x03}, /* y odd inc */
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3f0a, 0x00},
        {0x4001, 0x10}, /* total 128 black column */
        {0x4022, 0x06}, /* Anchor left end H */
        {0x4023, 0x00}, /* Anchor left end L */
        {0x4025, 0x2a}, /* Anchor right start L */
        {0x4027, 0x2b}, /* Anchor right end L */
        {0x402b, 0x04}, /* top black line number */
        {0x402f, 0x04}, /* bottom black line number */
        {0x4500, 0x58},
        {0x4600, 0x00},
        {0x4601, 0xcb},
        {0x382d, 0x7f},
        {0x0100, 0x01},
        {REG_NULL, 0x00},
};

/*
 * Xclk 24Mhz
 * max_framerate 15fps
 * mipi_datarate per lane 720Mbps
 */
static const struct regval ov8858_3264x2448_regs_2lane[] = {
        {0x0100, 0x00},
        {0x3501, 0x9a}, /* exposure M */
        {0x3502, 0x20}, /* exposure L */
        {0x3778, 0x1a},
        {0x3808, 0x0c}, /* x output size H */
        {0x3809, 0xc0}, /* x output size L */
        {0x380a, 0x09}, /* y output size H */
        {0x380b, 0x90}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x94}, /* HTS L */
        {0x380e, 0x09}, /* VTS H */
        {0x380f, 0xaa}, /* VTS L */
        {0x3814, 0x01}, /* x odd inc */
        {0x3821, 0x46}, /* mirror on, bin off */
        {0x382a, 0x01}, /* y odd inc */
        {0x3830, 0x06},
        {0x3836, 0x01},
        {0x3f0a, 0x00},
        {0x4001, 0x00}, /* total 256 black column */
        {0x4022, 0x0c}, /* Anchor left end H */
        {0x4023, 0x60}, /* Anchor left end L */
        {0x4025, 0x36}, /* Anchor right start L */
        {0x4027, 0x37}, /* Anchor right end L */
        {0x402b, 0x08}, /* top black line number */
        {0x402f, 0x08}, /* bottom black line number */
        {0x4500, 0x58},
        {0x4600, 0x01},
        {0x4601, 0x97},
        {0x382d, 0xff},
        {REG_NULL, 0x00},
};

static const struct regval ov8858_global_regs_r2a_4lane[] = {
        /*
         * MIPI=720Mbps, SysClk=144Mhz,Dac Clock=360Mhz.
         * v00_01_00 (05/29/2014) : initial setting
         * AM19 : 3617 <- 0xC0
         * AM20 : change FWC_6K_EN to be default 0x3618=0x5a
         */
        {0x0103, 0x01}, /* software reset for OVTATool only */
        {0x0103, 0x01}, /* software reset */
        {0x0100, 0x00}, /* software standby */
        {0x0302, 0x1e}, /* pll1_multi */
        {0x0303, 0x00}, /* pll1_divm */
        {0x0304, 0x03}, /* pll1_div_mipi */
        {0x030e, 0x00}, /* pll2_rdiv */
        {0x030f, 0x04}, /* pll2_divsp */
        {0x0312, 0x01}, /* pll2_pre_div0, pll2_r_divdac */
        {0x031e, 0x0c}, /* pll1_no_lat */
        {0x3600, 0x00},
        {0x3601, 0x00},
        {0x3602, 0x00},
        {0x3603, 0x00},
        {0x3604, 0x22},
        {0x3605, 0x20},
        {0x3606, 0x00},
        {0x3607, 0x20},
        {0x3608, 0x11},
        {0x3609, 0x28},
        {0x360a, 0x00},
        {0x360b, 0x05},
        {0x360c, 0xd4},
        {0x360d, 0x40},
        {0x360e, 0x0c},
        {0x360f, 0x20},
        {0x3610, 0x07},
        {0x3611, 0x20},
        {0x3612, 0x88},
        {0x3613, 0x80},
        {0x3614, 0x58},
        {0x3615, 0x00},
        {0x3616, 0x4a},
        {0x3617, 0x90},
        {0x3618, 0x5a},
        {0x3619, 0x70},
        {0x361a, 0x99},
        {0x361b, 0x0a},
        {0x361c, 0x07},
        {0x361d, 0x00},
        {0x361e, 0x00},
        {0x361f, 0x00},
        {0x3638, 0xff},
        {0x3633, 0x0f},
        {0x3634, 0x0f},
        {0x3635, 0x0f},
        {0x3636, 0x12},
        {0x3645, 0x13},
        {0x3646, 0x83},
        {0x364a, 0x07},
        {0x3015, 0x01},
        {0x3018, 0x72}, /* MIPI 4 lane */
        {0x3020, 0x93}, /* Clock switch output normal, pclk_div =/1 */
        {0x3022, 0x01}, /* pd_mipi enable when rst_sync */
        {0x3031, 0x0a}, /* MIPI 10-bit mode */
        {0x3034, 0x00},
        {0x3106, 0x01}, /* sclk_div, sclk_pre_div */
        {0x3305, 0xf1},
        {0x3308, 0x00},
        {0x3309, 0x28},
        {0x330a, 0x00},
        {0x330b, 0x20},
        {0x330c, 0x00},
        {0x330d, 0x00},
        {0x330e, 0x00},
        {0x330f, 0x40},
        {0x3307, 0x04},
        {0x3500, 0x00}, /* exposure H */
        {0x3501, 0x4d}, /* exposure M */
        {0x3502, 0x40}, /* exposure L */
        {0x3503, 0x80}, /* gain delay ?, exposure delay 1 frame, real gain */
        {0x3505, 0x80}, /* gain option */
        {0x3508, 0x02}, /* gain H */
        {0x3509, 0x00}, /* gain L */
        {0x350c, 0x00}, /* short gain H */
        {0x350d, 0x80}, /* short gain L */
        {0x3510, 0x00}, /* short exposure H */
        {0x3511, 0x02}, /* short exposure M */
        {0x3512, 0x00}, /* short exposure L */
        {0x3700, 0x30},
        {0x3701, 0x18},
        {0x3702, 0x50},
        {0x3703, 0x32},
        {0x3704, 0x28},
        {0x3705, 0x00},
        {0x3706, 0x82},
        {0x3707, 0x08},
        {0x3708, 0x48},
        {0x3709, 0x66},
        {0x370a, 0x01},
        {0x370b, 0x82},
        {0x370c, 0x07},
        {0x3718, 0x14},
        {0x3719, 0x31},
        {0x3712, 0x44},
        {0x3714, 0x24},
        {0x371e, 0x31},
        {0x371f, 0x7f},
        {0x3720, 0x0a},
        {0x3721, 0x0a},
        {0x3724, 0x0c},
        {0x3725, 0x02},
        {0x3726, 0x0c},
        {0x3728, 0x0a},
        {0x3729, 0x03},
        {0x372a, 0x06},
        {0x372b, 0xa6},
        {0x372c, 0xa6},
        {0x372d, 0xa6},
        {0x372e, 0x0c},
        {0x372f, 0x20},
        {0x3730, 0x02},
        {0x3731, 0x0c},
        {0x3732, 0x28},
        {0x3733, 0x10},
        {0x3734, 0x40},
        {0x3736, 0x30},
        {0x373a, 0x0a},
        {0x373b, 0x0b},
        {0x373c, 0x14},
        {0x373e, 0x06},
        {0x3750, 0x0a},
        {0x3751, 0x0e},
        {0x3755, 0x10},
        {0x3758, 0x00},
        {0x3759, 0x4c},
        {0x375a, 0x0c},
        {0x375b, 0x26},
        {0x375c, 0x20},
        {0x375d, 0x04},
        {0x375e, 0x00},
        {0x375f, 0x28},
        {0x3768, 0x22},
        {0x3769, 0x44},
        {0x376a, 0x44},
        {0x3761, 0x00},
        {0x3762, 0x00},
        {0x3763, 0x00},
        {0x3766, 0xff},
        {0x376b, 0x00},
        {0x3772, 0x46},
        {0x3773, 0x04},
        {0x3774, 0x2c},
        {0x3775, 0x13},
        {0x3776, 0x08},
        {0x3777, 0x00},
        {0x3778, 0x17},
        {0x37a0, 0x88},
        {0x37a1, 0x7a},
        {0x37a2, 0x7a},
        {0x37a3, 0x00},
        {0x37a4, 0x00},
        {0x37a5, 0x00},
        {0x37a6, 0x00},
        {0x37a7, 0x88},
        {0x37a8, 0x98},
        {0x37a9, 0x98},
        {0x3760, 0x00},
        {0x376f, 0x01},
        {0x37aa, 0x88},
        {0x37ab, 0x5c},
        {0x37ac, 0x5c},
        {0x37ad, 0x55},
        {0x37ae, 0x19},
        {0x37af, 0x19},
        {0x37b0, 0x00},
        {0x37b1, 0x00},
        {0x37b2, 0x00},
        {0x37b3, 0x84},
        {0x37b4, 0x84},
        {0x37b5, 0x60},
        {0x37b6, 0x00},
        {0x37b7, 0x00},
        {0x37b8, 0x00},
        {0x37b9, 0xff},
        {0x3800, 0x00}, /* x start H */
        {0x3801, 0x0c}, /* x start L */
        {0x3802, 0x00}, /* y start H */
        {0x3803, 0x0c}, /* y start L */
        {0x3804, 0x0c}, /* x end H */
        {0x3805, 0xd3}, /* x end L */
        {0x3806, 0x09}, /* y end H */
        {0x3807, 0xa3}, /* y end L */
        {0x3808, 0x06}, /* x output size H */
        {0x3809, 0x60}, /* x output size L */
        {0x380a, 0x04}, /* y output size H */
        {0x380b, 0xc8}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x88}, /* HTS L */
        {0x380e, 0x04}, /* VTS H */
        {0x380f, 0xdc}, /* VTS L */
        {0x3810, 0x00}, /* ISP x win H */
        {0x3811, 0x04}, /* ISP x win L */
        {0x3813, 0x02}, /* ISP y win L */
        {0x3814, 0x03}, /* x odd inc */
        {0x3815, 0x01}, /* x even inc */
        {0x3820, 0x00}, /* vflip off */
        {0x3821, 0x67}, /* mirror on, bin o */
        {0x382a, 0x03}, /* y odd inc */
        {0x382b, 0x01}, /* y even inc */
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x18},
        {0x3841, 0xff}, /* window auto size enable */
        {0x3846, 0x48},
        {0x3d85, 0x16}, /* OTP power up load data/setting enable */
        {0x3d8c, 0x73}, /* OTP setting start High */
        {0x3d8d, 0xde}, /* OTP setting start Low */
        {0x3f08, 0x10},
        {0x3f0a, 0x00},
        {0x4000, 0xf1}, /* out_range/format_chg/gain/exp_chg trig enable */
        {0x4001, 0x10}, /* total 128 black column */
        {0x4005, 0x10}, /* BLC target L */
        {0x4002, 0x27}, /* value used to limit BLC offset */
        {0x4009, 0x81}, /* final BLC offset limitation enable */
        {0x400b, 0x0c}, /* DCBLC on, DCBLC manual mode on */
        {0x401b, 0x00}, /* zero line R coefficient */
        {0x401d, 0x00}, /* zoro line T coefficient */
        {0x4020, 0x00}, /* Anchor left start H */
        {0x4021, 0x04}, /* Anchor left start L */
        {0x4022, 0x06}, /* Anchor left end H */
        {0x4023, 0x00}, /* Anchor left end L */
        {0x4024, 0x0f}, /* Anchor right start H */
        {0x4025, 0x2a}, /* Anchor right start L */
        {0x4026, 0x0f}, /* Anchor right end H */
        {0x4027, 0x2b}, /* Anchor right end L */
        {0x4028, 0x00}, /* top zero line start */
        {0x4029, 0x02}, /* top zero line number */
        {0x402a, 0x04}, /* top black line start */
        {0x402b, 0x04}, /* top black line number */
        {0x402c, 0x00}, /* bottom zero line start */
        {0x402d, 0x02}, /* bottom zoro line number */
        {0x402e, 0x04}, /* bottom black line start */
        {0x402f, 0x04}, /* bottom black line number */
        {0x401f, 0x00}, /* interpolation x/y disable, Anchor one disable */
        {0x4034, 0x3f},
        {0x403d, 0x04}, /* md_precision_en */
        {0x4300, 0xff}, /* clip max H */
        {0x4301, 0x00}, /* clip min H */
        {0x4302, 0x0f}, /* clip min L, clip max L */
        {0x4316, 0x00},
        {0x4500, 0x58},
        {0x4503, 0x18},
        {0x4600, 0x00},
        {0x4601, 0xcb},
        {0x481f, 0x32}, /* clk prepare min */
        {0x4837, 0x16}, /* global timing */
        {0x4850, 0x10}, /* lane 1 = 1, lane 0 = 0 */
        {0x4851, 0x32}, /* lane 3 = 3, lane 2 = 2 */
        {0x4b00, 0x2a},
        {0x4b0d, 0x00},
        {0x4d00, 0x04}, /* temperature sensor */
        {0x4d01, 0x18},
        {0x4d02, 0xc3},
        {0x4d03, 0xff},
        {0x4d04, 0xff},
        {0x4d05, 0xff}, /* temperature sensor */
        {0x5000, 0xfe}, /* lenc on, slave/master AWB gain/statistics enable */
        {0x5001, 0x01}, /* BLC on */
        {0x5002, 0x08}, /* WBMATCH sensor's gain, H scale/WBMATCH/OTP_DPC off */
        {0x5003, 0x20}, /* DPC_DBC buffer control enable, WB */
        {0x501e, 0x93}, /* enable digital gain */
        {0x5046, 0x12},
        {0x5780, 0x3e}, /* DPC */
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x00},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x04},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3}, /* DPC */
        {0x5871, 0x0d}, /* Lenc */
        {0x5870, 0x18},
        {0x586e, 0x10},
        {0x586f, 0x08},
        {0x58f7, 0x01},
        {0x58f8, 0x3d}, /* Lenc */
        {0x5901, 0x00}, /* H skip off, V skip off */
        {0x5b00, 0x02}, /* OTP DPC start address */
        {0x5b01, 0x10}, /* OTP DPC start address */
        {0x5b02, 0x03}, /* OTP DPC end address */
        {0x5b03, 0xcf}, /* OTP DPC end address */
        {0x5b05, 0x6c}, /* recover method = 2b11 */
        {0x5e00, 0x00}, /* use 0x3ff to test pattern off */
        {0x5e01, 0x41}, /* window cut enable */
        {0x382d, 0x7f},
        {0x4825, 0x3a}, /* lpx_p_min */
        {0x4826, 0x40}, /* hs_prepare_min */
        {0x4808, 0x25}, /* wake up delay in 1/1024 s */
        {0x3763, 0x18},
        {0x3768, 0xcc},
        {0x470b, 0x28},
        {0x4202, 0x00},
        {0x400d, 0x10}, /* BLC offset trigger L */
        {0x4040, 0x04}, /* BLC gain th2 */
        {0x403e, 0x04}, /* BLC gain th1 */
        {0x4041, 0xc6}, /* BLC */
        {0x3007, 0x80},
        {0x400a, 0x01},
        {REG_NULL, 0x00},
};

/*
 * Xclk 24Mhz
 * max_framerate 60fps
 * mipi_datarate per lane 720Mbps
 */
static const struct regval ov8858_1632x1224_regs_4lane[] = {
        {0x0100, 0x00},
        {0x3501, 0x4d}, /* exposure M */
        {0x3502, 0x40}, /* exposure L */
        {0x3808, 0x06}, /* x output size H */
        {0x3809, 0x60}, /* x output size L */
        {0x380a, 0x04}, /* y output size H */
        {0x380b, 0xc8}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x88}, /* HTS L */
        {0x380e, 0x04}, /* VTS H */
        {0x380f, 0xdc}, /* VTS L */
        {0x3814, 0x03}, /* x odd inc */
        {0x3821, 0x67}, /* mirror on, bin on */
        {0x382a, 0x03}, /* y odd inc */
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3f0a, 0x00},
        {0x4001, 0x10}, /* total 128 black column */
        {0x4022, 0x06}, /* Anchor left end H */
        {0x4023, 0x00}, /* Anchor left end L */
        {0x4025, 0x2a}, /* Anchor right start L */
        {0x4027, 0x2b}, /* Anchor right end L */
        {0x402b, 0x04}, /* top black line number */
        {0x402f, 0x04}, /* bottom black line number */
        {0x4500, 0x58},
        {0x4600, 0x00},
        {0x4601, 0xcb},
        {0x382d, 0x7f},
        {0x0100, 0x01},
        {REG_NULL, 0x00},
};

/*
 * Xclk 24Mhz
 * max_framerate 30fps
 * mipi_datarate per lane 720Mbps
 */
static const struct regval ov8858_3264x2448_regs_4lane[] = {
        {0x0100, 0x00},
        {0x3501, 0x9a}, /* exposure M */
        {0x3502, 0x20}, /* exposure L */
        {0x3808, 0x0c}, /* x output size H */
        {0x3809, 0xc0}, /* x output size L */
        {0x380a, 0x09}, /* y output size H */
        {0x380b, 0x90}, /* y output size L */
        {0x380c, 0x07}, /* HTS H */
        {0x380d, 0x94}, /* HTS L */
        {0x380e, 0x09}, /* VTS H */
        {0x380f, 0xaa}, /* VTS L */
        {0x3814, 0x01}, /* x odd inc */
        {0x3821, 0x46}, /* mirror on, bin off */
        {0x382a, 0x01}, /* y odd inc */
        {0x3830, 0x06},
        {0x3836, 0x01},
        {0x3f0a, 0x00},
        {0x4001, 0x00}, /* total 256 black column */
        {0x4022, 0x0c}, /* Anchor left end H */
        {0x4023, 0x60}, /* Anchor left end L */
        {0x4025, 0x36}, /* Anchor right start L */
        {0x4027, 0x37}, /* Anchor right end L */
        {0x402b, 0x08}, /* top black line number */
        {0x402f, 0x08}, /* interpolation x/y disable, Anchor one disable */
        {0x4500, 0x58},
        {0x4600, 0x01},
        {0x4601, 0x97},
        {0x382d, 0xff},
        {REG_NULL, 0x00},
};

static const struct ov8858_mode ov8858_modes[] = {
        {
                .width = 3264,
                .height = 2448,
                .exp_def = 2464,
                .hts_def = 1940 * 2,
                .vts_def = 2472,
                .reg_modes = {
                        .mode_2lanes = ov8858_3264x2448_regs_2lane,
                        .mode_4lanes = ov8858_3264x2448_regs_4lane,
                },
        },
        {
                .width = 1632,
                .height = 1224,
                .exp_def = 1232,
                .hts_def = 1928 * 2,
                .vts_def = 1244,
                .reg_modes = {
                        .mode_2lanes = ov8858_1632x1224_regs_2lane,
                        .mode_4lanes = ov8858_1632x1224_regs_4lane,
                },
        },
};

static const s64 link_freq_menu_items[] = {
        OV8858_LINK_FREQ
};

static const char * const ov8858_test_pattern_menu[] = {
        "Disabled",
        "Vertical Color Bar Type 1",
        "Vertical Color Bar Type 2",
        "Vertical Color Bar Type 3",
        "Vertical Color Bar Type 4"
};

/* ----------------------------------------------------------------------------
 * HW access
 */

static int ov8858_write(struct ov8858 *ov8858, u32 reg, u32 val, int *err)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        unsigned int len = (reg >> OV8858_REG_SIZE_SHIFT) & 3;
        u16 addr = reg & OV8858_REG_ADDR_MASK;
        u8 buf[6];
        int ret;

        if (err && *err)
                return *err;

        put_unaligned_be16(addr, buf);
        put_unaligned_be32(val << (8 * (4 - len)), buf + 2);

        ret = i2c_master_send(client, buf, len + 2);
        if (ret != len + 2) {
                ret = ret < 0 ? ret : -EIO;
                if (err)
                        *err = ret;

                dev_err(&client->dev,
                        "Failed to write reg %u: %d\n", addr, ret);
                return ret;
        }

        return 0;
}

static int ov8858_write_array(struct ov8858 *ov8858, const struct regval *regs)
{
        unsigned int i;
        int ret = 0;

        for (i = 0; ret == 0 && regs[i].addr != REG_NULL; ++i) {
                ov8858_write(ov8858, OV8858_REG_8BIT(regs[i].addr),
                             regs[i].val, &ret);
        }

        return ret;
}

static int ov8858_read(struct ov8858 *ov8858, u32 reg, u32 *val)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        __be16 reg_addr_be = cpu_to_be16(reg & OV8858_REG_ADDR_MASK);
        unsigned int len = (reg >> OV8858_REG_SIZE_SHIFT) & 3;
        struct i2c_msg msgs[2];
        __be32 data_be = 0;
        u8 *data_be_p;
        int ret;

        data_be_p = (u8 *)&data_be;

        /* Write register address */
        msgs[0].addr = client->addr;
        msgs[0].flags = 0;
        msgs[0].len = 2;
        msgs[0].buf = (u8 *)&reg_addr_be;

        /* Read data from register */
        msgs[1].addr = client->addr;
        msgs[1].flags = I2C_M_RD;
        msgs[1].len = len;
        msgs[1].buf = &data_be_p[4 - len];

        ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
        if (ret != ARRAY_SIZE(msgs)) {
                ret = ret < 0 ? ret : -EIO;
                dev_err(&client->dev,
                        "Failed to read reg %u: %d\n", reg, ret);
                return ret;
        }

        *val = be32_to_cpu(data_be);

        return 0;
}

/* ----------------------------------------------------------------------------
 * Streaming
 */

static int ov8858_start_stream(struct ov8858 *ov8858,
                               struct v4l2_subdev_state *state)
{
        struct v4l2_mbus_framefmt *format;
        const struct ov8858_mode *mode;
        const struct regval *reg_list;
        int ret;

        ret = ov8858_write_array(ov8858, ov8858->global_regs);
        if (ret)
                return ret;

        format = v4l2_subdev_state_get_format(state, 0);
        mode = v4l2_find_nearest_size(ov8858_modes, ARRAY_SIZE(ov8858_modes),
                                      width, height, format->width,
                                      format->height);

        reg_list = ov8858->num_lanes == 4
                 ? mode->reg_modes.mode_4lanes
                 : mode->reg_modes.mode_2lanes;

        ret = ov8858_write_array(ov8858, reg_list);
        if (ret)
                return ret;

        /* 200 usec max to let PLL stabilize. */
        fsleep(200);

        ret = __v4l2_ctrl_handler_setup(&ov8858->ctrl_handler);
        if (ret)
                return ret;

        ret = ov8858_write(ov8858, OV8858_REG_SC_CTRL0100,
                           OV8858_MODE_STREAMING, NULL);
        if (ret)
                return ret;

        /* t5 (fixed) = 10msec before entering streaming state */
        fsleep(10000);

        return 0;
}

static int ov8858_stop_stream(struct ov8858 *ov8858)
{
        return ov8858_write(ov8858, OV8858_REG_SC_CTRL0100,
                            OV8858_MODE_SW_STANDBY, NULL);
}

static int ov8858_s_stream(struct v4l2_subdev *sd, int on)
{
        struct i2c_client *client = v4l2_get_subdevdata(sd);
        struct ov8858 *ov8858 = sd_to_ov8858(sd);
        struct v4l2_subdev_state *state;
        int ret = 0;

        state = v4l2_subdev_lock_and_get_active_state(sd);

        if (on) {
                ret = pm_runtime_resume_and_get(&client->dev);
                if (ret < 0)
                        goto unlock_and_return;

                ret = ov8858_start_stream(ov8858, state);
                if (ret) {
                        dev_err(&client->dev, "Failed to start streaming\n");
                        pm_runtime_put_sync(&client->dev);
                        goto unlock_and_return;
                }
        } else {
                ov8858_stop_stream(ov8858);
                pm_runtime_put_autosuspend(&client->dev);
        }

unlock_and_return:
        v4l2_subdev_unlock_state(state);

        return ret;
}

static const struct v4l2_subdev_video_ops ov8858_video_ops = {
        .s_stream = ov8858_s_stream,
};

/* ----------------------------------------------------------------------------
 * Pad ops
 */

static int ov8858_set_fmt(struct v4l2_subdev *sd,
                          struct v4l2_subdev_state *state,
                          struct v4l2_subdev_format *fmt)
{
        struct ov8858 *ov8858 = sd_to_ov8858(sd);
        const struct ov8858_mode *mode;
        s64 h_blank, vblank_def;

        mode = v4l2_find_nearest_size(ov8858_modes, ARRAY_SIZE(ov8858_modes),
                                      width, height, fmt->format.width,
                                      fmt->format.height);

        fmt->format.code = MEDIA_BUS_FMT_SBGGR10_1X10;
        fmt->format.width = mode->width;
        fmt->format.height = mode->height;
        fmt->format.field = V4L2_FIELD_NONE;

        /* Store the format in the current subdev state. */
        *v4l2_subdev_state_get_format(state, 0) =  fmt->format;

        if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
                return 0;

        /* Adjust control limits when a new mode is applied. */
        h_blank = mode->hts_def - mode->width;
        __v4l2_ctrl_modify_range(ov8858->hblank, h_blank, h_blank, 1,
                                 h_blank);

        vblank_def = mode->vts_def - mode->height;
        __v4l2_ctrl_modify_range(ov8858->vblank, vblank_def,
                                 OV8858_VTS_MAX - mode->height, 1,
                                 vblank_def);

        return 0;
}

static int ov8858_enum_frame_sizes(struct v4l2_subdev *sd,
                                   struct v4l2_subdev_state *state,
                                   struct v4l2_subdev_frame_size_enum *fse)
{
        if (fse->index >= ARRAY_SIZE(ov8858_modes))
                return -EINVAL;

        if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
                return -EINVAL;

        fse->min_width  = ov8858_modes[fse->index].width;
        fse->max_width  = ov8858_modes[fse->index].width;
        fse->max_height = ov8858_modes[fse->index].height;
        fse->min_height = ov8858_modes[fse->index].height;

        return 0;
}

static int ov8858_enum_mbus_code(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *state,
                                 struct v4l2_subdev_mbus_code_enum *code)
{
        if (code->index != 0)
                return -EINVAL;

        code->code = MEDIA_BUS_FMT_SBGGR10_1X10;

        return 0;
}

static int ov8858_init_state(struct v4l2_subdev *sd,
                             struct v4l2_subdev_state *sd_state)
{
        const struct ov8858_mode *def_mode = &ov8858_modes[0];
        struct v4l2_subdev_format fmt = {
                .which = V4L2_SUBDEV_FORMAT_TRY,
                .format = {
                        .width = def_mode->width,
                        .height = def_mode->height,
                },
        };

        ov8858_set_fmt(sd, sd_state, &fmt);

        return 0;
}

static const struct v4l2_subdev_pad_ops ov8858_pad_ops = {
        .enum_mbus_code = ov8858_enum_mbus_code,
        .enum_frame_size = ov8858_enum_frame_sizes,
        .get_fmt = v4l2_subdev_get_fmt,
        .set_fmt = ov8858_set_fmt,
};

static const struct v4l2_subdev_ops ov8858_subdev_ops = {
        .video  = &ov8858_video_ops,
        .pad    = &ov8858_pad_ops,
};

static const struct v4l2_subdev_internal_ops ov8858_internal_ops = {
        .init_state = ov8858_init_state,
};

/* ----------------------------------------------------------------------------
 * Controls handling
 */

static int ov8858_enable_test_pattern(struct ov8858 *ov8858, u32 pattern)
{
        u32 val;

        if (pattern)
                val = (pattern - 1) | OV8858_TEST_PATTERN_ENABLE;
        else
                val = OV8858_TEST_PATTERN_DISABLE;

        return ov8858_write(ov8858, OV8858_REG_TEST_PATTERN, val, NULL);
}

static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
{
        struct ov8858 *ov8858 = container_of(ctrl->handler,
                                             struct ov8858, ctrl_handler);

        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        struct v4l2_mbus_framefmt *format;
        struct v4l2_subdev_state *state;
        u16 digi_gain;
        s64 max_exp;
        int ret;

        /*
         * The control handler and the subdev state use the same mutex and the
         * mutex is guaranteed to be locked:
         * - by the core when s_ctrl is called int the VIDIOC_S_CTRL call path
         * - by the driver when s_ctrl is called in the s_stream(1) call path
         */
        state = v4l2_subdev_get_locked_active_state(&ov8858->subdev);
        format = v4l2_subdev_state_get_format(state, 0);

        /* Propagate change of current control to all related controls */
        switch (ctrl->id) {
        case V4L2_CID_VBLANK:
                /* Update max exposure while meeting expected vblanking */
                max_exp = format->height + ctrl->val - OV8858_EXPOSURE_MARGIN;
                __v4l2_ctrl_modify_range(ov8858->exposure,
                                         ov8858->exposure->minimum, max_exp,
                                         ov8858->exposure->step,
                                         ov8858->exposure->default_value);
                break;
        }

        if (!pm_runtime_get_if_in_use(&client->dev))
                return 0;

        switch (ctrl->id) {
        case V4L2_CID_EXPOSURE:
                /* 4 least significant bits of exposure are fractional part */
                ret = ov8858_write(ov8858, OV8858_REG_LONG_EXPO,
                                   ctrl->val << 4, NULL);
                break;
        case V4L2_CID_ANALOGUE_GAIN:
                ret = ov8858_write(ov8858, OV8858_REG_LONG_GAIN,
                                   ctrl->val, NULL);
                break;
        case V4L2_CID_DIGITAL_GAIN:
                /*
                 * Digital gain is assembled as:
                 * 0x350a[7:0] = dgain[13:6]
                 * 0x350b[5:0] = dgain[5:0]
                 * Reassemble the control value to write it in one go.
                 */
                digi_gain = (ctrl->val & OV8858_LONG_DIGIGAIN_L_MASK)
                          | ((ctrl->val & OV8858_LONG_DIGIGAIN_H_MASK) <<
                              OV8858_LONG_DIGIGAIN_H_SHIFT);
                ret = ov8858_write(ov8858, OV8858_REG_LONG_DIGIGAIN,
                                   digi_gain, NULL);
                break;
        case V4L2_CID_VBLANK:
                ret = ov8858_write(ov8858, OV8858_REG_VTS,
                                   ctrl->val + format->height, NULL);
                break;
        case V4L2_CID_TEST_PATTERN:
                ret = ov8858_enable_test_pattern(ov8858, ctrl->val);
                break;
        default:
                ret = -EINVAL;
                dev_warn(&client->dev, "%s Unhandled id: 0x%x\n",
                         __func__, ctrl->id);
                break;
        }

        pm_runtime_put(&client->dev);

        return ret;
}

static const struct v4l2_ctrl_ops ov8858_ctrl_ops = {
        .s_ctrl = ov8858_set_ctrl,
};

/* ----------------------------------------------------------------------------
 * Power Management
 */

static int ov8858_power_on(struct ov8858 *ov8858)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        struct device *dev = &client->dev;
        unsigned long delay_us;
        int ret;

        if (clk_get_rate(ov8858->xvclk) != OV8858_XVCLK_FREQ)
                dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");

        ret = clk_prepare_enable(ov8858->xvclk);
        if (ret < 0) {
                dev_err(dev, "Failed to enable xvclk\n");
                return ret;
        }

        ret = regulator_bulk_enable(ARRAY_SIZE(ov8858_supply_names),
                                    ov8858->supplies);
        if (ret < 0) {
                dev_err(dev, "Failed to enable regulators\n");
                goto disable_clk;
        }

        /*
         * The chip manual only suggests 8192 cycles prior to first SCCB
         * transaction, but a double sleep between the release of gpios
         * helps with sporadic failures observed at probe time.
         */
        delay_us = DIV_ROUND_UP(8192, OV8858_XVCLK_FREQ / 1000 / 1000);

        gpiod_set_value_cansleep(ov8858->reset_gpio, 0);
        fsleep(delay_us);
        gpiod_set_value_cansleep(ov8858->pwdn_gpio, 0);
        fsleep(delay_us);

        return 0;

disable_clk:
        clk_disable_unprepare(ov8858->xvclk);

        return ret;
}

static void ov8858_power_off(struct ov8858 *ov8858)
{
        gpiod_set_value_cansleep(ov8858->pwdn_gpio, 1);
        clk_disable_unprepare(ov8858->xvclk);
        gpiod_set_value_cansleep(ov8858->reset_gpio, 1);

        regulator_bulk_disable(ARRAY_SIZE(ov8858_supply_names),
                               ov8858->supplies);
}

static int ov8858_runtime_resume(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov8858 *ov8858 = sd_to_ov8858(sd);

        return ov8858_power_on(ov8858);
}

static int ov8858_runtime_suspend(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov8858 *ov8858 = sd_to_ov8858(sd);

        ov8858_power_off(ov8858);

        return 0;
}

static const struct dev_pm_ops ov8858_pm_ops = {
        SET_RUNTIME_PM_OPS(ov8858_runtime_suspend,
                           ov8858_runtime_resume, NULL)
};

/* ----------------------------------------------------------------------------
 * Probe and initialization
 */

static int ov8858_init_ctrls(struct ov8858 *ov8858)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        struct v4l2_ctrl_handler *handler = &ov8858->ctrl_handler;
        const struct ov8858_mode *mode = &ov8858_modes[0];
        struct v4l2_fwnode_device_properties props;
        s64 exposure_max, vblank_def;
        unsigned int pixel_rate;
        struct v4l2_ctrl *ctrl;
        u32 h_blank;
        int ret;

        ret = v4l2_ctrl_handler_init(handler, 10);
        if (ret)
                return ret;

        ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
                                      0, 0, link_freq_menu_items);
        if (ctrl)
                ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        /* pixel rate = link frequency * 2 * lanes / bpp */
        pixel_rate = OV8858_LINK_FREQ * 2 * ov8858->num_lanes / 10;
        v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
                          0, pixel_rate, 1, pixel_rate);

        h_blank = mode->hts_def - mode->width;
        ov8858->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
                                           h_blank, h_blank, 1, h_blank);
        if (ov8858->hblank)
                ov8858->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        vblank_def = mode->vts_def - mode->height;
        ov8858->vblank = v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops,
                                           V4L2_CID_VBLANK, vblank_def,
                                           OV8858_VTS_MAX - mode->height,
                                           1, vblank_def);

        exposure_max = mode->vts_def - OV8858_EXPOSURE_MARGIN;
        ov8858->exposure = v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops,
                                             V4L2_CID_EXPOSURE,
                                             OV8858_EXPOSURE_MIN,
                                             exposure_max, OV8858_EXPOSURE_STEP,
                                             mode->exp_def);

        v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
                          OV8858_LONG_GAIN_MIN, OV8858_LONG_GAIN_MAX,
                          OV8858_LONG_GAIN_STEP, OV8858_LONG_GAIN_DEFAULT);

        v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
                          OV8858_LONG_DIGIGAIN_MIN, OV8858_LONG_DIGIGAIN_MAX,
                          OV8858_LONG_DIGIGAIN_STEP,
                          OV8858_LONG_DIGIGAIN_DEFAULT);

        v4l2_ctrl_new_std_menu_items(handler, &ov8858_ctrl_ops,
                                     V4L2_CID_TEST_PATTERN,
                                     ARRAY_SIZE(ov8858_test_pattern_menu) - 1,
                                     0, 0, ov8858_test_pattern_menu);

        if (handler->error) {
                ret = handler->error;
                goto err_free_handler;
        }

        ret = v4l2_fwnode_device_parse(&client->dev, &props);
        if (ret)
                goto err_free_handler;

        ret = v4l2_ctrl_new_fwnode_properties(handler, &ov8858_ctrl_ops,
                                              &props);
        if (ret)
                goto err_free_handler;

        ov8858->subdev.ctrl_handler = handler;

        return 0;

err_free_handler:
        dev_err(&client->dev, "Failed to init controls: %d\n", ret);
        v4l2_ctrl_handler_free(handler);

        return ret;
}

static int ov8858_check_sensor_id(struct ov8858 *ov8858)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        u32 id = 0;
        int ret;

        ret = ov8858_read(ov8858, OV8858_REG_CHIP_ID, &id);
        if (ret)
                return ret;

        if (id != OV8858_CHIP_ID) {
                dev_err(&client->dev, "Unexpected sensor id 0x%x\n", id);
                return -ENODEV;
        }

        ret = ov8858_read(ov8858, OV8858_REG_SUB_ID, &id);
        if (ret)
                return ret;

        dev_info(&client->dev, "Detected OV8858 sensor, revision 0x%x\n", id);

        if (id == OV8858_R2A) {
                /* R2A supports 2 and 4 lanes modes. */
                ov8858->global_regs = ov8858->num_lanes == 4
                                    ? ov8858_global_regs_r2a_4lane
                                    : ov8858_global_regs_r2a_2lane;
        } else if (ov8858->num_lanes == 2) {
                /*
                 * R1A only supports 2 lanes mode and it's only partially
                 * supported.
                 */
                ov8858->global_regs = ov8858_global_regs_r1a;
                dev_warn(&client->dev, "R1A may not work well!\n");
        } else {
                dev_err(&client->dev,
                        "Unsupported number of data lanes for R1A revision.\n");
                return -EINVAL;
        }

        return 0;
}

static int ov8858_configure_regulators(struct ov8858 *ov8858)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        unsigned int i;

        for (i = 0; i < ARRAY_SIZE(ov8858_supply_names); i++)
                ov8858->supplies[i].supply = ov8858_supply_names[i];

        return devm_regulator_bulk_get(&client->dev,
                                       ARRAY_SIZE(ov8858_supply_names),
                                       ov8858->supplies);
}

static int ov8858_parse_of(struct ov8858 *ov8858)
{
        struct v4l2_fwnode_endpoint vep = { .bus_type = V4L2_MBUS_CSI2_DPHY };
        struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
        struct device *dev = &client->dev;
        struct fwnode_handle *endpoint;
        int ret;

        endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
        if (!endpoint) {
                dev_err(dev, "Failed to get endpoint\n");
                return -EINVAL;
        }

        ret = v4l2_fwnode_endpoint_parse(endpoint, &vep);
        fwnode_handle_put(endpoint);
        if (ret) {
                dev_err(dev, "Failed to parse endpoint: %d\n", ret);
                return ret;
        }

        ov8858->num_lanes = vep.bus.mipi_csi2.num_data_lanes;
        switch (ov8858->num_lanes) {
        case 4:
        case 2:
                break;
        default:
                dev_err(dev, "Unsupported number of data lanes %u\n",
                        ov8858->num_lanes);
                return -EINVAL;
        }

        return 0;
}

static int ov8858_probe(struct i2c_client *client)
{
        struct device *dev = &client->dev;
        struct v4l2_subdev *sd;
        struct ov8858 *ov8858;
        int ret;

        ov8858 = devm_kzalloc(dev, sizeof(*ov8858), GFP_KERNEL);
        if (!ov8858)
                return -ENOMEM;

        ov8858->xvclk = devm_v4l2_sensor_clk_get(dev, "xvclk");
        if (IS_ERR(ov8858->xvclk))
                return dev_err_probe(dev, PTR_ERR(ov8858->xvclk),
                                     "Failed to get xvclk\n");

        ov8858->reset_gpio = devm_gpiod_get_optional(dev, "reset",
                                                     GPIOD_OUT_HIGH);
        if (IS_ERR(ov8858->reset_gpio))
                return dev_err_probe(dev, PTR_ERR(ov8858->reset_gpio),
                                     "Failed to get reset gpio\n");

        ov8858->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
                                                    GPIOD_OUT_HIGH);
        if (IS_ERR(ov8858->pwdn_gpio))
                return dev_err_probe(dev, PTR_ERR(ov8858->pwdn_gpio),
                                     "Failed to get powerdown gpio\n");

        v4l2_i2c_subdev_init(&ov8858->subdev, client, &ov8858_subdev_ops);
        ov8858->subdev.internal_ops = &ov8858_internal_ops;

        ret = ov8858_configure_regulators(ov8858);
        if (ret)
                return dev_err_probe(dev, ret, "Failed to get regulators\n");

        ret = ov8858_parse_of(ov8858);
        if (ret)
                return ret;

        ret = ov8858_init_ctrls(ov8858);
        if (ret)
                return ret;

        sd = &ov8858->subdev;
        sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
        ov8858->pad.flags = MEDIA_PAD_FL_SOURCE;
        sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
        ret = media_entity_pads_init(&sd->entity, 1, &ov8858->pad);
        if (ret < 0)
                goto err_free_handler;

        sd->state_lock = ov8858->ctrl_handler.lock;
        ret = v4l2_subdev_init_finalize(sd);
        if (ret < 0) {
                dev_err(&client->dev, "Subdev initialization error %d\n", ret);
                goto err_clean_entity;
        }

        ret = ov8858_power_on(ov8858);
        if (ret)
                goto err_clean_entity;

        pm_runtime_set_active(dev);
        pm_runtime_get_noresume(dev);
        pm_runtime_enable(dev);

        ret = ov8858_check_sensor_id(ov8858);
        if (ret)
                goto err_power_off;

        pm_runtime_set_autosuspend_delay(dev, 1000);
        pm_runtime_use_autosuspend(dev);

        ret = v4l2_async_register_subdev_sensor(sd);
        if (ret) {
                dev_err(dev, "v4l2 async register subdev failed\n");
                goto err_power_off;
        }

        pm_runtime_put_autosuspend(dev);

        return 0;

err_power_off:
        pm_runtime_disable(dev);
        pm_runtime_put_noidle(dev);
        ov8858_power_off(ov8858);
err_clean_entity:
        media_entity_cleanup(&sd->entity);
err_free_handler:
        v4l2_ctrl_handler_free(&ov8858->ctrl_handler);

        return ret;
}

static void ov8858_remove(struct i2c_client *client)
{
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov8858 *ov8858 = sd_to_ov8858(sd);

        v4l2_async_unregister_subdev(sd);
        media_entity_cleanup(&sd->entity);
        v4l2_ctrl_handler_free(&ov8858->ctrl_handler);

        pm_runtime_disable(&client->dev);
        if (!pm_runtime_status_suspended(&client->dev))
                ov8858_power_off(ov8858);
        pm_runtime_set_suspended(&client->dev);
}

static const struct of_device_id ov8858_of_match[] = {
        { .compatible = "ovti,ov8858" },
        { /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, ov8858_of_match);

static struct i2c_driver ov8858_i2c_driver = {
        .driver = {
                .name = "ov8858",
                .pm = &ov8858_pm_ops,
                .of_match_table = ov8858_of_match,
        },
        .probe          = ov8858_probe,
        .remove         = ov8858_remove,
};

module_i2c_driver(ov8858_i2c_driver);

MODULE_DESCRIPTION("OmniVision OV8858 sensor driver");
MODULE_LICENSE("GPL");