// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2017 Intel Corporation.

#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/unaligned.h>

#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>

#define OV5670_XVCLK_FREQ               19200000

#define OV5670_REG_CHIP_ID              0x300a
#define OV5670_CHIP_ID                  0x005670

#define OV5670_REG_MODE_SELECT          0x0100
#define OV5670_MODE_STANDBY             0x00
#define OV5670_MODE_STREAMING           0x01

#define OV5670_REG_SOFTWARE_RST         0x0103
#define OV5670_SOFTWARE_RST             0x01

#define OV5670_MIPI_SC_CTRL0_REG                0x3018
#define OV5670_MIPI_SC_CTRL0_LANES(v)           ((((v) - 1) << 5) & \
                                                 GENMASK(7, 5))
#define OV5670_MIPI_SC_CTRL0_MIPI_EN            BIT(4)
#define OV5670_MIPI_SC_CTRL0_RESERVED           BIT(1)

/* vertical-timings from sensor */
#define OV5670_REG_VTS                  0x380e
#define OV5670_VTS_30FPS                0x0808 /* default for 30 fps */
#define OV5670_VTS_MAX                  0xffff

/* horizontal-timings from sensor */
#define OV5670_REG_HTS                  0x380c

/*
 * Pixels-per-line(PPL) = Time-per-line * pixel-rate
 * In OV5670, Time-per-line = HTS/SCLK.
 * HTS is fixed for all resolutions, not recommended to change.
 */
#define OV5670_FIXED_PPL                2724    /* Pixels per line */

/* Exposure controls from sensor */
#define OV5670_REG_EXPOSURE             0x3500
#define OV5670_EXPOSURE_MIN             4
#define OV5670_EXPOSURE_STEP            1

/* Analog gain controls from sensor */
#define OV5670_REG_ANALOG_GAIN          0x3508
#define ANALOG_GAIN_MIN                 0
#define ANALOG_GAIN_MAX                 8191
#define ANALOG_GAIN_STEP                1
#define ANALOG_GAIN_DEFAULT             128

/* Digital gain controls from sensor */
#define OV5670_REG_R_DGTL_GAIN          0x5032
#define OV5670_REG_G_DGTL_GAIN          0x5034
#define OV5670_REG_B_DGTL_GAIN          0x5036
#define OV5670_DGTL_GAIN_MIN            0
#define OV5670_DGTL_GAIN_MAX            4095
#define OV5670_DGTL_GAIN_STEP           1
#define OV5670_DGTL_GAIN_DEFAULT        1024

/* Test Pattern Control */
#define OV5670_REG_TEST_PATTERN         0x4303
#define OV5670_TEST_PATTERN_ENABLE      BIT(3)
#define OV5670_REG_TEST_PATTERN_CTRL    0x4320

#define OV5670_REG_VALUE_08BIT          1
#define OV5670_REG_VALUE_16BIT          2
#define OV5670_REG_VALUE_24BIT          3

/* Pixel Array */
#define OV5670_NATIVE_WIDTH             2624
#define OV5670_NATIVE_HEIGHT            1980

/* Initial number of frames to skip to avoid possible garbage */
#define OV5670_NUM_OF_SKIP_FRAMES       2

struct ov5670_reg {
        u16 address;
        u8 val;
};

struct ov5670_reg_list {
        u32 num_of_regs;
        const struct ov5670_reg *regs;
};

struct ov5670_link_freq_config {
        const struct ov5670_reg_list reg_list;
};

static const char * const ov5670_supply_names[] = {
        "avdd",         /* Analog power */
        "dvdd",         /* Digital power */
        "dovdd",        /* Digital output power */
};

#define OV5670_NUM_SUPPLIES ARRAY_SIZE(ov5670_supply_names)

struct ov5670_mode {
        /* Frame width in pixels */
        u32 width;

        /* Frame height in pixels */
        u32 height;

        /* Default vertical timining size */
        u32 vts_def;

        /* Min vertical timining size */
        u32 vts_min;

        /* Link frequency needed for this resolution */
        u32 link_freq_index;

        /* Analog crop rectangle */
        const struct v4l2_rect *analog_crop;

        /* Sensor register settings for this resolution */
        const struct ov5670_reg_list reg_list;
};

/*
 * All the modes supported by the driver are obtained by subsampling the
 * full pixel array. The below values are reflected in registers from
 * 0x3800-0x3807 in the modes register-value tables.
 */
static const struct v4l2_rect ov5670_analog_crop = {
        .left   = 12,
        .top    = 4,
        .width  = 2600,
        .height = 1952,
};

static const struct ov5670_reg mipi_data_rate_840mbps[] = {
        {0x0300, 0x04},
        {0x0301, 0x00},
        {0x0302, 0x84},
        {0x0303, 0x00},
        {0x0304, 0x03},
        {0x0305, 0x01},
        {0x0306, 0x01},
        {0x030a, 0x00},
        {0x030b, 0x00},
        {0x030c, 0x00},
        {0x030d, 0x26},
        {0x030e, 0x00},
        {0x030f, 0x06},
        {0x0312, 0x01},
        {0x3031, 0x0a},
};

static const struct ov5670_reg mode_2592x1944_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x00},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x10},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x0a},
        {0x3809, 0x20},
        {0x380a, 0x07},
        {0x380b, 0x98},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x01},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x84},
        {0x3821, 0x46},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x01},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x0d},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x40},
        {0x4503, 0x10},
        {0x4508, 0xaa},
        {0x4509, 0xaa},
        {0x450a, 0x00},
        {0x450b, 0x00},
        {0x4600, 0x01},
        {0x4601, 0x03},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x08},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x06},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3},
        {0x3503, 0x00},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const struct ov5670_reg mode_1296x972_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x07},
        {0x3509, 0x80},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x00},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x08},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x05},
        {0x3809, 0x10},
        {0x380a, 0x03},
        {0x380b, 0xcc},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x04},
        {0x3814, 0x03},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x94},
        {0x3821, 0x47},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x03},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x05},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x48},
        {0x4503, 0x10},
        {0x4508, 0x55},
        {0x4509, 0x55},
        {0x450a, 0x00},
        {0x450b, 0x00},
        {0x4600, 0x00},
        {0x4601, 0x81},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x10},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {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},
        {0x3503, 0x00},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const struct ov5670_reg mode_648x486_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x04},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x08},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x02},
        {0x3809, 0x88},
        {0x380a, 0x01},
        {0x380b, 0xe6},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x07},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x94},
        {0x3821, 0xc6},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x07},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x05},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x40},
        {0x4503, 0x10},
        {0x4508, 0x55},
        {0x4509, 0x55},
        {0x450a, 0x02},
        {0x450b, 0x00},
        {0x4600, 0x00},
        {0x4601, 0x40},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x10},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x06},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3},
        {0x3503, 0x00},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const struct ov5670_reg mode_2560x1440_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x00},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x10},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x0a},
        {0x3809, 0x00},
        {0x380a, 0x05},
        {0x380b, 0xa0},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x01},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x84},
        {0x3821, 0x46},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x01},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x0d},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x40},
        {0x4503, 0x10},
        {0x4508, 0xaa},
        {0x4509, 0xaa},
        {0x450a, 0x00},
        {0x450b, 0x00},
        {0x4600, 0x01},
        {0x4601, 0x00},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x08},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x06},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const struct ov5670_reg mode_1280x720_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x00},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x08},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x05},
        {0x3809, 0x00},
        {0x380a, 0x02},
        {0x380b, 0xd0},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x03},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x94},
        {0x3821, 0x47},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x03},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x05},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x48},
        {0x4503, 0x10},
        {0x4508, 0x55},
        {0x4509, 0x55},
        {0x450a, 0x00},
        {0x450b, 0x00},
        {0x4600, 0x00},
        {0x4601, 0x80},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x10},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x06},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3},
        {0x3503, 0x00},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const struct ov5670_reg mode_640x360_regs[] = {
        {0x3000, 0x00},
        {0x3002, 0x21},
        {0x3005, 0xf0},
        {0x3007, 0x00},
        {0x3015, 0x0f},
        {0x301a, 0xf0},
        {0x301b, 0xf0},
        {0x301c, 0xf0},
        {0x301d, 0xf0},
        {0x301e, 0xf0},
        {0x3030, 0x00},
        {0x3031, 0x0a},
        {0x303c, 0xff},
        {0x303e, 0xff},
        {0x3040, 0xf0},
        {0x3041, 0x00},
        {0x3042, 0xf0},
        {0x3106, 0x11},
        {0x3500, 0x00},
        {0x3501, 0x80},
        {0x3502, 0x00},
        {0x3503, 0x04},
        {0x3504, 0x03},
        {0x3505, 0x83},
        {0x3508, 0x04},
        {0x3509, 0x00},
        {0x350e, 0x04},
        {0x350f, 0x00},
        {0x3510, 0x00},
        {0x3511, 0x02},
        {0x3512, 0x00},
        {0x3601, 0xc8},
        {0x3610, 0x88},
        {0x3612, 0x48},
        {0x3614, 0x5b},
        {0x3615, 0x96},
        {0x3621, 0xd0},
        {0x3622, 0x00},
        {0x3623, 0x04},
        {0x3633, 0x13},
        {0x3634, 0x13},
        {0x3635, 0x13},
        {0x3636, 0x13},
        {0x3645, 0x13},
        {0x3646, 0x82},
        {0x3650, 0x00},
        {0x3652, 0xff},
        {0x3655, 0x20},
        {0x3656, 0xff},
        {0x365a, 0xff},
        {0x365e, 0xff},
        {0x3668, 0x00},
        {0x366a, 0x07},
        {0x366e, 0x08},
        {0x366d, 0x00},
        {0x366f, 0x80},
        {0x3700, 0x28},
        {0x3701, 0x10},
        {0x3702, 0x3a},
        {0x3703, 0x19},
        {0x3704, 0x10},
        {0x3705, 0x00},
        {0x3706, 0x66},
        {0x3707, 0x08},
        {0x3708, 0x34},
        {0x3709, 0x40},
        {0x370a, 0x01},
        {0x370b, 0x1b},
        {0x3714, 0x24},
        {0x371a, 0x3e},
        {0x3733, 0x00},
        {0x3734, 0x00},
        {0x373a, 0x05},
        {0x373b, 0x06},
        {0x373c, 0x0a},
        {0x373f, 0xa0},
        {0x3755, 0x00},
        {0x3758, 0x00},
        {0x375b, 0x0e},
        {0x3766, 0x5f},
        {0x3768, 0x00},
        {0x3769, 0x22},
        {0x3773, 0x08},
        {0x3774, 0x1f},
        {0x3776, 0x06},
        {0x37a0, 0x88},
        {0x37a1, 0x5c},
        {0x37a7, 0x88},
        {0x37a8, 0x70},
        {0x37aa, 0x88},
        {0x37ab, 0x48},
        {0x37b3, 0x66},
        {0x37c2, 0x04},
        {0x37c5, 0x00},
        {0x37c8, 0x00},
        {0x3800, 0x00},
        {0x3801, 0x0c},
        {0x3802, 0x00},
        {0x3803, 0x04},
        {0x3804, 0x0a},
        {0x3805, 0x33},
        {0x3806, 0x07},
        {0x3807, 0xa3},
        {0x3808, 0x02},
        {0x3809, 0x80},
        {0x380a, 0x01},
        {0x380b, 0x68},
        {0x380c, 0x06},
        {0x380d, 0x90},
        {0x380e, 0x08},
        {0x380f, 0x08},
        {0x3811, 0x04},
        {0x3813, 0x02},
        {0x3814, 0x07},
        {0x3815, 0x01},
        {0x3816, 0x00},
        {0x3817, 0x00},
        {0x3818, 0x00},
        {0x3819, 0x00},
        {0x3820, 0x94},
        {0x3821, 0xc6},
        {0x3822, 0x48},
        {0x3826, 0x00},
        {0x3827, 0x08},
        {0x382a, 0x07},
        {0x382b, 0x01},
        {0x3830, 0x08},
        {0x3836, 0x02},
        {0x3837, 0x00},
        {0x3838, 0x10},
        {0x3841, 0xff},
        {0x3846, 0x48},
        {0x3861, 0x00},
        {0x3862, 0x04},
        {0x3863, 0x06},
        {0x3a11, 0x01},
        {0x3a12, 0x78},
        {0x3b00, 0x00},
        {0x3b02, 0x00},
        {0x3b03, 0x00},
        {0x3b04, 0x00},
        {0x3b05, 0x00},
        {0x3c00, 0x89},
        {0x3c01, 0xab},
        {0x3c02, 0x01},
        {0x3c03, 0x00},
        {0x3c04, 0x00},
        {0x3c05, 0x03},
        {0x3c06, 0x00},
        {0x3c07, 0x05},
        {0x3c0c, 0x00},
        {0x3c0d, 0x00},
        {0x3c0e, 0x00},
        {0x3c0f, 0x00},
        {0x3c40, 0x00},
        {0x3c41, 0xa3},
        {0x3c43, 0x7d},
        {0x3c45, 0xd7},
        {0x3c47, 0xfc},
        {0x3c50, 0x05},
        {0x3c52, 0xaa},
        {0x3c54, 0x71},
        {0x3c56, 0x80},
        {0x3d85, 0x17},
        {0x3f03, 0x00},
        {0x3f0a, 0x00},
        {0x3f0b, 0x00},
        {0x4001, 0x60},
        {0x4009, 0x05},
        {0x4020, 0x00},
        {0x4021, 0x00},
        {0x4022, 0x00},
        {0x4023, 0x00},
        {0x4024, 0x00},
        {0x4025, 0x00},
        {0x4026, 0x00},
        {0x4027, 0x00},
        {0x4028, 0x00},
        {0x4029, 0x00},
        {0x402a, 0x00},
        {0x402b, 0x00},
        {0x402c, 0x00},
        {0x402d, 0x00},
        {0x402e, 0x00},
        {0x402f, 0x00},
        {0x4040, 0x00},
        {0x4041, 0x03},
        {0x4042, 0x00},
        {0x4043, 0x7A},
        {0x4044, 0x00},
        {0x4045, 0x7A},
        {0x4046, 0x00},
        {0x4047, 0x7A},
        {0x4048, 0x00},
        {0x4049, 0x7A},
        {0x4307, 0x30},
        {0x4500, 0x58},
        {0x4501, 0x04},
        {0x4502, 0x40},
        {0x4503, 0x10},
        {0x4508, 0x55},
        {0x4509, 0x55},
        {0x450a, 0x02},
        {0x450b, 0x00},
        {0x4600, 0x00},
        {0x4601, 0x40},
        {0x4700, 0xa4},
        {0x4800, 0x4c},
        {0x4816, 0x53},
        {0x481f, 0x40},
        {0x4837, 0x13},
        {0x5000, 0x56},
        {0x5001, 0x01},
        {0x5002, 0x28},
        {0x5004, 0x0c},
        {0x5006, 0x0c},
        {0x5007, 0xe0},
        {0x5008, 0x01},
        {0x5009, 0xb0},
        {0x5901, 0x00},
        {0x5a01, 0x00},
        {0x5a03, 0x00},
        {0x5a04, 0x0c},
        {0x5a05, 0xe0},
        {0x5a06, 0x09},
        {0x5a07, 0xb0},
        {0x5a08, 0x06},
        {0x5e00, 0x00},
        {0x3734, 0x40},
        {0x5b00, 0x01},
        {0x5b01, 0x10},
        {0x5b02, 0x01},
        {0x5b03, 0xdb},
        {0x3d8c, 0x71},
        {0x3d8d, 0xea},
        {0x4017, 0x10},
        {0x3618, 0x2a},
        {0x5780, 0x3e},
        {0x5781, 0x0f},
        {0x5782, 0x44},
        {0x5783, 0x02},
        {0x5784, 0x01},
        {0x5785, 0x01},
        {0x5786, 0x00},
        {0x5787, 0x04},
        {0x5788, 0x02},
        {0x5789, 0x0f},
        {0x578a, 0xfd},
        {0x578b, 0xf5},
        {0x578c, 0xf5},
        {0x578d, 0x03},
        {0x578e, 0x08},
        {0x578f, 0x0c},
        {0x5790, 0x08},
        {0x5791, 0x06},
        {0x5792, 0x00},
        {0x5793, 0x52},
        {0x5794, 0xa3},
        {0x3503, 0x00},
        {0x5045, 0x05},
        {0x4003, 0x40},
        {0x5048, 0x40}
};

static const char * const ov5670_test_pattern_menu[] = {
        "Disabled",
        "Vertical Color Bar Type 1",
};

/* Supported link frequencies */
#define OV5670_LINK_FREQ_422MHZ         422400000
#define OV5670_LINK_FREQ_422MHZ_INDEX   0
static const struct ov5670_link_freq_config link_freq_configs[] = {
        {
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mipi_data_rate_840mbps),
                        .regs = mipi_data_rate_840mbps,
                }
        }
};

static const s64 link_freq_menu_items[] = {
        OV5670_LINK_FREQ_422MHZ
};

/*
 * OV5670 sensor supports following resolutions with full FOV:
 * 4:3  ==> {2592x1944, 1296x972, 648x486}
 * 16:9 ==> {2560x1440, 1280x720, 640x360}
 */
static const struct ov5670_mode supported_modes[] = {
        {
                .width = 2592,
                .height = 1944,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = OV5670_VTS_30FPS,
                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_2592x1944_regs),
                        .regs = mode_2592x1944_regs,
                },
        },
        {
                .width = 1296,
                .height = 972,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = 996,
                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_1296x972_regs),
                        .regs = mode_1296x972_regs,
                },
        },
        {
                .width = 648,
                .height = 486,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = 516,
                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_648x486_regs),
                        .regs = mode_648x486_regs,
                },
        },
        {
                .width = 2560,
                .height = 1440,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = OV5670_VTS_30FPS,
                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_2560x1440_regs),
                        .regs = mode_2560x1440_regs,
                },
        },
        {
                .width = 1280,
                .height = 720,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = 1020,

                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_1280x720_regs),
                        .regs = mode_1280x720_regs,
                },
        },
        {
                .width = 640,
                .height = 360,
                .vts_def = OV5670_VTS_30FPS,
                .vts_min = 510,
                .link_freq_index = OV5670_LINK_FREQ_422MHZ_INDEX,
                .analog_crop = &ov5670_analog_crop,
                .reg_list = {
                        .num_of_regs = ARRAY_SIZE(mode_640x360_regs),
                        .regs = mode_640x360_regs,
                },
        }
};

struct ov5670 {
        struct device *dev;

        struct v4l2_subdev sd;
        struct media_pad pad;
        struct v4l2_fwnode_endpoint endpoint;

        struct v4l2_ctrl_handler ctrl_handler;
        /* V4L2 Controls */
        struct v4l2_ctrl *link_freq;
        struct v4l2_ctrl *pixel_rate;
        struct v4l2_ctrl *vblank;
        struct v4l2_ctrl *hblank;
        struct v4l2_ctrl *exposure;

        /* Current mode */
        const struct ov5670_mode *cur_mode;

        /* xvclk input clock */
        struct clk *xvclk;

        /* Regulators */
        struct regulator_bulk_data supplies[OV5670_NUM_SUPPLIES];

        /* Power-down and reset gpios. */
        struct gpio_desc *pwdn_gpio; /* PWDNB pin. */
        struct gpio_desc *reset_gpio; /* XSHUTDOWN pin. */

        /* To serialize asynchronous callbacks */
        struct mutex mutex;

        /* True if the device has been identified */
        bool identified;
};

#define to_ov5670(_sd)  container_of(_sd, struct ov5670, sd)

/* Read registers up to 4 at a time */
static int ov5670_read_reg(struct ov5670 *ov5670, u16 reg, unsigned int len,
                           u32 *val)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov5670->sd);
        struct i2c_msg msgs[2];
        u8 *data_be_p;
        __be32 data_be = 0;
        __be16 reg_addr_be = cpu_to_be16(reg);
        int ret;

        if (len > 4)
                return -EINVAL;

        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))
                return -EIO;

        *val = be32_to_cpu(data_be);

        return 0;
}

/* Write registers up to 4 at a time */
static int ov5670_write_reg(struct ov5670 *ov5670, u16 reg, unsigned int len,
                            u32 val)
{
        struct i2c_client *client = v4l2_get_subdevdata(&ov5670->sd);
        int buf_i;
        int val_i;
        u8 buf[6];
        u8 *val_p;
        __be32 tmp;

        if (len > 4)
                return -EINVAL;

        buf[0] = reg >> 8;
        buf[1] = reg & 0xff;

        tmp = cpu_to_be32(val);
        val_p = (u8 *)&tmp;
        buf_i = 2;
        val_i = 4 - len;

        while (val_i < 4)
                buf[buf_i++] = val_p[val_i++];

        if (i2c_master_send(client, buf, len + 2) != len + 2)
                return -EIO;

        return 0;
}

/* Write a list of registers */
static int ov5670_write_regs(struct ov5670 *ov5670,
                             const struct ov5670_reg *regs, unsigned int len)
{
        unsigned int i;
        int ret;

        for (i = 0; i < len; i++) {
                ret = ov5670_write_reg(ov5670, regs[i].address, 1, regs[i].val);
                if (ret) {
                        dev_err_ratelimited(
                                ov5670->dev,
                                "Failed to write reg 0x%4.4x. error = %d\n",
                                regs[i].address, ret);

                        return ret;
                }
        }

        return 0;
}

static int ov5670_write_reg_list(struct ov5670 *ov5670,
                                 const struct ov5670_reg_list *r_list)
{
        return ov5670_write_regs(ov5670, r_list->regs, r_list->num_of_regs);
}

static int ov5670_update_digital_gain(struct ov5670 *ov5670, u32 d_gain)
{
        int ret;

        ret = ov5670_write_reg(ov5670, OV5670_REG_R_DGTL_GAIN,
                               OV5670_REG_VALUE_16BIT, d_gain);
        if (ret)
                return ret;

        ret = ov5670_write_reg(ov5670, OV5670_REG_G_DGTL_GAIN,
                               OV5670_REG_VALUE_16BIT, d_gain);
        if (ret)
                return ret;

        return ov5670_write_reg(ov5670, OV5670_REG_B_DGTL_GAIN,
                                OV5670_REG_VALUE_16BIT, d_gain);
}

static int ov5670_enable_test_pattern(struct ov5670 *ov5670, u32 pattern)
{
        u32 val;
        int ret;

        /* Set the bayer order that we support */
        ret = ov5670_write_reg(ov5670, OV5670_REG_TEST_PATTERN_CTRL,
                               OV5670_REG_VALUE_08BIT, 0);
        if (ret)
                return ret;

        ret = ov5670_read_reg(ov5670, OV5670_REG_TEST_PATTERN,
                              OV5670_REG_VALUE_08BIT, &val);
        if (ret)
                return ret;

        if (pattern)
                val |= OV5670_TEST_PATTERN_ENABLE;
        else
                val &= ~OV5670_TEST_PATTERN_ENABLE;

        return ov5670_write_reg(ov5670, OV5670_REG_TEST_PATTERN,
                                OV5670_REG_VALUE_08BIT, val);
}

/* Initialize control handlers */
static int ov5670_set_ctrl(struct v4l2_ctrl *ctrl)
{
        struct ov5670 *ov5670 = container_of(ctrl->handler,
                                             struct ov5670, ctrl_handler);
        s64 max;
        int ret;

        /* Propagate change of current control to all related controls */
        switch (ctrl->id) {
        case V4L2_CID_VBLANK:
                /* Update max exposure while meeting expected vblanking */
                max = ov5670->cur_mode->height + ctrl->val - 8;
                __v4l2_ctrl_modify_range(ov5670->exposure,
                                         ov5670->exposure->minimum, max,
                                         ov5670->exposure->step, max);
                break;
        }

        /* V4L2 controls values will be applied only when power is already up */
        if (!pm_runtime_get_if_in_use(ov5670->dev))
                return 0;

        switch (ctrl->id) {
        case V4L2_CID_ANALOGUE_GAIN:
                ret = ov5670_write_reg(ov5670, OV5670_REG_ANALOG_GAIN,
                                       OV5670_REG_VALUE_16BIT, ctrl->val);
                break;
        case V4L2_CID_DIGITAL_GAIN:
                ret = ov5670_update_digital_gain(ov5670, ctrl->val);
                break;
        case V4L2_CID_EXPOSURE:
                /* 4 least significant bits of expsoure are fractional part */
                ret = ov5670_write_reg(ov5670, OV5670_REG_EXPOSURE,
                                       OV5670_REG_VALUE_24BIT, ctrl->val << 4);
                break;
        case V4L2_CID_VBLANK:
                /* Update VTS that meets expected vertical blanking */
                ret = ov5670_write_reg(ov5670, OV5670_REG_VTS,
                                       OV5670_REG_VALUE_16BIT,
                                       ov5670->cur_mode->height + ctrl->val);
                break;
        case V4L2_CID_TEST_PATTERN:
                ret = ov5670_enable_test_pattern(ov5670, ctrl->val);
                break;
        case V4L2_CID_HBLANK:
        case V4L2_CID_LINK_FREQ:
        case V4L2_CID_PIXEL_RATE:
                ret = 0;
                break;
        default:
                ret = -EINVAL;
                dev_info(ov5670->dev, "%s Unhandled id:0x%x, val:0x%x\n",
                         __func__, ctrl->id, ctrl->val);
                break;
        }

        pm_runtime_put(ov5670->dev);

        return ret;
}

static const struct v4l2_ctrl_ops ov5670_ctrl_ops = {
        .s_ctrl = ov5670_set_ctrl,
};

/* Initialize control handlers */
static int ov5670_init_controls(struct ov5670 *ov5670)
{
        struct v4l2_mbus_config_mipi_csi2 *bus_mipi_csi2 =
                &ov5670->endpoint.bus.mipi_csi2;
        struct v4l2_fwnode_device_properties props;
        struct v4l2_ctrl_handler *ctrl_hdlr;
        unsigned int lanes_count;
        s64 mipi_pixel_rate;
        s64 vblank_max;
        s64 vblank_def;
        s64 vblank_min;
        s64 exposure_max;
        int ret;

        ctrl_hdlr = &ov5670->ctrl_handler;
        ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
        if (ret)
                return ret;

        ctrl_hdlr->lock = &ov5670->mutex;
        ov5670->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
                                                   &ov5670_ctrl_ops,
                                                   V4L2_CID_LINK_FREQ,
                                                   0, 0, link_freq_menu_items);
        if (ov5670->link_freq)
                ov5670->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        /* By default, V4L2_CID_PIXEL_RATE is read only */
        lanes_count = bus_mipi_csi2->num_data_lanes;
        mipi_pixel_rate = OV5670_LINK_FREQ_422MHZ * 2 * lanes_count / 10;

        ov5670->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov5670_ctrl_ops,
                                               V4L2_CID_PIXEL_RATE,
                                               mipi_pixel_rate,
                                               mipi_pixel_rate,
                                               1,
                                               mipi_pixel_rate);

        vblank_max = OV5670_VTS_MAX - ov5670->cur_mode->height;
        vblank_def = ov5670->cur_mode->vts_def - ov5670->cur_mode->height;
        vblank_min = ov5670->cur_mode->vts_min - ov5670->cur_mode->height;
        ov5670->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov5670_ctrl_ops,
                                           V4L2_CID_VBLANK, vblank_min,
                                           vblank_max, 1, vblank_def);

        ov5670->hblank = v4l2_ctrl_new_std(
                                ctrl_hdlr, &ov5670_ctrl_ops, V4L2_CID_HBLANK,
                                OV5670_FIXED_PPL - ov5670->cur_mode->width,
                                OV5670_FIXED_PPL - ov5670->cur_mode->width, 1,
                                OV5670_FIXED_PPL - ov5670->cur_mode->width);
        if (ov5670->hblank)
                ov5670->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        /* Get min, max, step, default from sensor */
        v4l2_ctrl_new_std(ctrl_hdlr, &ov5670_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
                          ANALOG_GAIN_MIN, ANALOG_GAIN_MAX, ANALOG_GAIN_STEP,
                          ANALOG_GAIN_DEFAULT);

        /* Digital gain */
        v4l2_ctrl_new_std(ctrl_hdlr, &ov5670_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
                          OV5670_DGTL_GAIN_MIN, OV5670_DGTL_GAIN_MAX,
                          OV5670_DGTL_GAIN_STEP, OV5670_DGTL_GAIN_DEFAULT);

        /* Get min, max, step, default from sensor */
        exposure_max = ov5670->cur_mode->vts_def - 8;
        ov5670->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov5670_ctrl_ops,
                                             V4L2_CID_EXPOSURE,
                                             OV5670_EXPOSURE_MIN,
                                             exposure_max, OV5670_EXPOSURE_STEP,
                                             exposure_max);

        v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov5670_ctrl_ops,
                                     V4L2_CID_TEST_PATTERN,
                                     ARRAY_SIZE(ov5670_test_pattern_menu) - 1,
                                     0, 0, ov5670_test_pattern_menu);

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

        ret = v4l2_fwnode_device_parse(ov5670->dev, &props);
        if (ret)
                goto error;

        ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &ov5670_ctrl_ops,
                                              &props);
        if (ret)
                goto error;

        ov5670->sd.ctrl_handler = ctrl_hdlr;

        return 0;

error:
        v4l2_ctrl_handler_free(ctrl_hdlr);

        return ret;
}

static int ov5670_init_state(struct v4l2_subdev *sd,
                             struct v4l2_subdev_state *state)
{
        struct v4l2_mbus_framefmt *fmt =
                                v4l2_subdev_state_get_format(state, 0);
        const struct ov5670_mode *default_mode = &supported_modes[0];
        struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);

        fmt->width = default_mode->width;
        fmt->height = default_mode->height;
        fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
        fmt->field = V4L2_FIELD_NONE;
        fmt->colorspace = V4L2_COLORSPACE_SRGB;
        fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB);
        fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
        fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB);

        *crop = *default_mode->analog_crop;

        return 0;
}

static int ov5670_enum_mbus_code(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *sd_state,
                                 struct v4l2_subdev_mbus_code_enum *code)
{
        /* Only one bayer order GRBG is supported */
        if (code->index > 0)
                return -EINVAL;

        code->code = MEDIA_BUS_FMT_SGRBG10_1X10;

        return 0;
}

static int ov5670_enum_frame_size(struct v4l2_subdev *sd,
                                  struct v4l2_subdev_state *sd_state,
                                  struct v4l2_subdev_frame_size_enum *fse)
{
        if (fse->index >= ARRAY_SIZE(supported_modes))
                return -EINVAL;

        if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
                return -EINVAL;

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

        return 0;
}

static void ov5670_update_pad_format(const struct ov5670_mode *mode,
                                     struct v4l2_subdev_format *fmt)
{
        fmt->format.width = mode->width;
        fmt->format.height = mode->height;
        fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
        fmt->format.field = V4L2_FIELD_NONE;
}

static int ov5670_do_get_pad_format(struct ov5670 *ov5670,
                                    struct v4l2_subdev_state *sd_state,
                                    struct v4l2_subdev_format *fmt)
{
        if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
                fmt->format = *v4l2_subdev_state_get_format(sd_state,
                                                            fmt->pad);
        else
                ov5670_update_pad_format(ov5670->cur_mode, fmt);

        return 0;
}

static int ov5670_get_pad_format(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *sd_state,
                                 struct v4l2_subdev_format *fmt)
{
        struct ov5670 *ov5670 = to_ov5670(sd);
        int ret;

        mutex_lock(&ov5670->mutex);
        ret = ov5670_do_get_pad_format(ov5670, sd_state, fmt);
        mutex_unlock(&ov5670->mutex);

        return ret;
}

static int ov5670_set_pad_format(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *sd_state,
                                 struct v4l2_subdev_format *fmt)
{
        struct ov5670 *ov5670 = to_ov5670(sd);
        struct v4l2_mbus_config_mipi_csi2 *bus_mipi_csi2 =
                &ov5670->endpoint.bus.mipi_csi2;
        const struct ov5670_mode *mode;
        unsigned int lanes_count;
        s64 mipi_pixel_rate;
        s32 vblank_def;
        s64 link_freq;
        s32 h_blank;

        mutex_lock(&ov5670->mutex);

        fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;

        mode = v4l2_find_nearest_size(supported_modes,
                                      ARRAY_SIZE(supported_modes),
                                      width, height,
                                      fmt->format.width, fmt->format.height);
        ov5670_update_pad_format(mode, fmt);
        if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
                *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format;
        } else {
                ov5670->cur_mode = mode;
                __v4l2_ctrl_s_ctrl(ov5670->link_freq, mode->link_freq_index);

                lanes_count = bus_mipi_csi2->num_data_lanes;
                link_freq = link_freq_menu_items[mode->link_freq_index];
                /* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
                mipi_pixel_rate = div_s64(link_freq * 2 * lanes_count, 10);
                __v4l2_ctrl_s_ctrl_int64(
                        ov5670->pixel_rate,
                        mipi_pixel_rate);
                /* Update limits and set FPS to default */
                vblank_def = ov5670->cur_mode->vts_def -
                             ov5670->cur_mode->height;
                __v4l2_ctrl_modify_range(
                        ov5670->vblank,
                        ov5670->cur_mode->vts_min - ov5670->cur_mode->height,
                        OV5670_VTS_MAX - ov5670->cur_mode->height, 1,
                        vblank_def);
                __v4l2_ctrl_s_ctrl(ov5670->vblank, vblank_def);
                h_blank = OV5670_FIXED_PPL - ov5670->cur_mode->width;
                __v4l2_ctrl_modify_range(ov5670->hblank, h_blank, h_blank, 1,
                                         h_blank);
        }

        mutex_unlock(&ov5670->mutex);

        return 0;
}

static int ov5670_get_skip_frames(struct v4l2_subdev *sd, u32 *frames)
{
        *frames = OV5670_NUM_OF_SKIP_FRAMES;

        return 0;
}

/* Verify chip ID */
static int ov5670_identify_module(struct ov5670 *ov5670)
{
        int ret;
        u32 val;

        if (ov5670->identified)
                return 0;

        ret = ov5670_read_reg(ov5670, OV5670_REG_CHIP_ID,
                              OV5670_REG_VALUE_24BIT, &val);
        if (ret)
                return ret;

        if (val != OV5670_CHIP_ID) {
                dev_err(ov5670->dev, "chip id mismatch: %x!=%x\n",
                        OV5670_CHIP_ID, val);
                return -ENXIO;
        }

        ov5670->identified = true;

        return 0;
}

static int ov5670_mipi_configure(struct ov5670 *ov5670)
{
        struct v4l2_mbus_config_mipi_csi2 *bus_mipi_csi2 =
                &ov5670->endpoint.bus.mipi_csi2;
        unsigned int lanes_count = bus_mipi_csi2->num_data_lanes;

        return ov5670_write_reg(ov5670, OV5670_MIPI_SC_CTRL0_REG,
                                OV5670_REG_VALUE_08BIT,
                                OV5670_MIPI_SC_CTRL0_LANES(lanes_count) |
                                OV5670_MIPI_SC_CTRL0_MIPI_EN |
                                OV5670_MIPI_SC_CTRL0_RESERVED);
}

/* Prepare streaming by writing default values and customized values */
static int ov5670_start_streaming(struct ov5670 *ov5670)
{
        const struct ov5670_reg_list *reg_list;
        int link_freq_index;
        int ret;

        ret = ov5670_identify_module(ov5670);
        if (ret)
                return ret;

        /* Get out of from software reset */
        ret = ov5670_write_reg(ov5670, OV5670_REG_SOFTWARE_RST,
                               OV5670_REG_VALUE_08BIT, OV5670_SOFTWARE_RST);
        if (ret) {
                dev_err(ov5670->dev, "%s failed to set powerup registers\n",
                        __func__);
                return ret;
        }

        /* Setup PLL */
        link_freq_index = ov5670->cur_mode->link_freq_index;
        reg_list = &link_freq_configs[link_freq_index].reg_list;
        ret = ov5670_write_reg_list(ov5670, reg_list);
        if (ret) {
                dev_err(ov5670->dev, "%s failed to set plls\n", __func__);
                return ret;
        }

        /* Apply default values of current mode */
        reg_list = &ov5670->cur_mode->reg_list;
        ret = ov5670_write_reg_list(ov5670, reg_list);
        if (ret) {
                dev_err(ov5670->dev, "%s failed to set mode\n", __func__);
                return ret;
        }

        ret = ov5670_mipi_configure(ov5670);
        if (ret) {
                dev_err(ov5670->dev, "%s failed to configure MIPI\n", __func__);
                return ret;
        }

        ret = __v4l2_ctrl_handler_setup(ov5670->sd.ctrl_handler);
        if (ret)
                return ret;

        /* Write stream on list */
        ret = ov5670_write_reg(ov5670, OV5670_REG_MODE_SELECT,
                               OV5670_REG_VALUE_08BIT, OV5670_MODE_STREAMING);
        if (ret) {
                dev_err(ov5670->dev, "%s failed to set stream\n", __func__);
                return ret;
        }

        return 0;
}

static int ov5670_stop_streaming(struct ov5670 *ov5670)
{
        int ret;

        ret = ov5670_write_reg(ov5670, OV5670_REG_MODE_SELECT,
                               OV5670_REG_VALUE_08BIT, OV5670_MODE_STANDBY);
        if (ret)
                dev_err(ov5670->dev, "%s failed to set stream\n", __func__);

        /* Return success even if it was an error, as there is nothing the
         * caller can do about it.
         */
        return 0;
}

static int ov5670_set_stream(struct v4l2_subdev *sd, int enable)
{
        struct ov5670 *ov5670 = to_ov5670(sd);
        int ret = 0;

        mutex_lock(&ov5670->mutex);

        if (enable) {
                ret = pm_runtime_resume_and_get(ov5670->dev);
                if (ret < 0)
                        goto unlock_and_return;

                ret = ov5670_start_streaming(ov5670);
                if (ret)
                        goto error;
        } else {
                ret = ov5670_stop_streaming(ov5670);
                pm_runtime_put(ov5670->dev);
        }
        goto unlock_and_return;

error:
        pm_runtime_put(ov5670->dev);

unlock_and_return:
        mutex_unlock(&ov5670->mutex);

        return ret;
}

static int __maybe_unused ov5670_runtime_resume(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov5670 *ov5670 = to_ov5670(sd);
        unsigned long delay_us;
        int ret;

        ret = clk_prepare_enable(ov5670->xvclk);
        if (ret)
                return ret;

        ret = regulator_bulk_enable(OV5670_NUM_SUPPLIES, ov5670->supplies);
        if (ret) {
                clk_disable_unprepare(ov5670->xvclk);
                return ret;
        }

        gpiod_set_value_cansleep(ov5670->pwdn_gpio, 0);
        gpiod_set_value_cansleep(ov5670->reset_gpio, 0);

        /* 8192 * 2 clock pulses before the first SCCB transaction. */
        delay_us = DIV_ROUND_UP(8192 * 2 * 1000,
                                DIV_ROUND_UP(OV5670_XVCLK_FREQ, 1000));
        fsleep(delay_us);

        return 0;
}

static int __maybe_unused ov5670_runtime_suspend(struct device *dev)
{
        struct i2c_client *client = to_i2c_client(dev);
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov5670 *ov5670 = to_ov5670(sd);

        gpiod_set_value_cansleep(ov5670->reset_gpio, 1);
        gpiod_set_value_cansleep(ov5670->pwdn_gpio, 1);
        regulator_bulk_disable(OV5670_NUM_SUPPLIES, ov5670->supplies);
        clk_disable_unprepare(ov5670->xvclk);

        return 0;
}

static const struct v4l2_subdev_core_ops ov5670_core_ops = {
        .log_status = v4l2_ctrl_subdev_log_status,
        .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
        .unsubscribe_event = v4l2_event_subdev_unsubscribe,
};

static const struct v4l2_rect *
__ov5670_get_pad_crop(struct ov5670 *sensor, struct v4l2_subdev_state *state,
                      unsigned int pad, enum v4l2_subdev_format_whence which)
{
        const struct ov5670_mode *mode = sensor->cur_mode;

        switch (which) {
        case V4L2_SUBDEV_FORMAT_TRY:
                return v4l2_subdev_state_get_crop(state, pad);
        case V4L2_SUBDEV_FORMAT_ACTIVE:
                return mode->analog_crop;
        }

        return NULL;
}

static int ov5670_get_selection(struct v4l2_subdev *subdev,
                                struct v4l2_subdev_state *state,
                                struct v4l2_subdev_selection *sel)
{
        struct ov5670 *sensor = to_ov5670(subdev);

        switch (sel->target) {
        case V4L2_SEL_TGT_CROP:
                mutex_lock(&sensor->mutex);
                sel->r = *__ov5670_get_pad_crop(sensor, state, sel->pad,
                                                sel->which);
                mutex_unlock(&sensor->mutex);
                break;
        case V4L2_SEL_TGT_NATIVE_SIZE:
        case V4L2_SEL_TGT_CROP_BOUNDS:
                sel->r.top = 0;
                sel->r.left = 0;
                sel->r.width = OV5670_NATIVE_WIDTH;
                sel->r.height = OV5670_NATIVE_HEIGHT;
                break;
        case V4L2_SEL_TGT_CROP_DEFAULT:
                sel->r = ov5670_analog_crop;
                break;
        default:
                return -EINVAL;
        }

        return 0;
}

static const struct v4l2_subdev_video_ops ov5670_video_ops = {
        .s_stream = ov5670_set_stream,
};

static const struct v4l2_subdev_pad_ops ov5670_pad_ops = {
        .enum_mbus_code = ov5670_enum_mbus_code,
        .get_fmt = ov5670_get_pad_format,
        .set_fmt = ov5670_set_pad_format,
        .enum_frame_size = ov5670_enum_frame_size,
        .get_selection = ov5670_get_selection,
        .set_selection = ov5670_get_selection,
};

static const struct v4l2_subdev_sensor_ops ov5670_sensor_ops = {
        .g_skip_frames = ov5670_get_skip_frames,
};

static const struct v4l2_subdev_ops ov5670_subdev_ops = {
        .core = &ov5670_core_ops,
        .video = &ov5670_video_ops,
        .pad = &ov5670_pad_ops,
        .sensor = &ov5670_sensor_ops,
};

static const struct v4l2_subdev_internal_ops ov5670_internal_ops = {
        .init_state = ov5670_init_state,
};

static const struct media_entity_operations ov5670_subdev_entity_ops = {
        .link_validate = v4l2_subdev_link_validate,
};

static int ov5670_regulators_probe(struct ov5670 *ov5670)
{
        unsigned int i;

        for (i = 0; i < OV5670_NUM_SUPPLIES; i++)
                ov5670->supplies[i].supply = ov5670_supply_names[i];

        return devm_regulator_bulk_get(ov5670->dev, OV5670_NUM_SUPPLIES,
                                       ov5670->supplies);
}

static int ov5670_gpio_probe(struct ov5670 *ov5670)
{
        ov5670->pwdn_gpio = devm_gpiod_get_optional(ov5670->dev, "powerdown",
                                                    GPIOD_OUT_LOW);
        if (IS_ERR(ov5670->pwdn_gpio))
                return PTR_ERR(ov5670->pwdn_gpio);

        ov5670->reset_gpio = devm_gpiod_get_optional(ov5670->dev, "reset",
                                                     GPIOD_OUT_LOW);
        if (IS_ERR(ov5670->reset_gpio))
                return PTR_ERR(ov5670->reset_gpio);

        return 0;
}

static int ov5670_probe(struct i2c_client *client)
{
        struct fwnode_handle *handle;
        struct ov5670 *ov5670;
        u32 input_clk = 0;
        bool full_power;
        int ret;

        ov5670 = devm_kzalloc(&client->dev, sizeof(*ov5670), GFP_KERNEL);
        if (!ov5670)
                return -ENOMEM;

        ov5670->dev = &client->dev;

        ov5670->xvclk = devm_v4l2_sensor_clk_get(ov5670->dev, NULL);
        if (IS_ERR(ov5670->xvclk))
                return dev_err_probe(ov5670->dev, PTR_ERR(ov5670->xvclk),
                                     "error getting clock\n");

        input_clk = clk_get_rate(ov5670->xvclk);
        if (input_clk != OV5670_XVCLK_FREQ) {
                dev_err(ov5670->dev,
                        "Unsupported clock frequency %u\n", input_clk);
                return -EINVAL;
        }

        /* Initialize subdev */
        v4l2_i2c_subdev_init(&ov5670->sd, client, &ov5670_subdev_ops);
        ov5670->sd.internal_ops = &ov5670_internal_ops;

        ret = ov5670_regulators_probe(ov5670);
        if (ret)
                return dev_err_probe(ov5670->dev, ret, "Regulators probe failed\n");

        ret = ov5670_gpio_probe(ov5670);
        if (ret)
                return dev_err_probe(ov5670->dev, ret, "GPIO probe failed\n");

        /*
         * Graph Endpoint. If it's missing we defer rather than fail, as this
         * sensor is known to co-exist on systems with the IPU3 and so it might
         * be created by the ipu-bridge.
         */
        handle = fwnode_graph_get_next_endpoint(dev_fwnode(ov5670->dev), NULL);
        if (!handle)
                return dev_err_probe(ov5670->dev, -EPROBE_DEFER,
                                     "Endpoint for node get failed\n");

        ov5670->endpoint.bus_type = V4L2_MBUS_CSI2_DPHY;
        ov5670->endpoint.bus.mipi_csi2.num_data_lanes = 2;

        ret = v4l2_fwnode_endpoint_alloc_parse(handle, &ov5670->endpoint);
        fwnode_handle_put(handle);
        if (ret)
                return dev_err_probe(ov5670->dev, ret, "Endpoint parse failed\n");

        full_power = acpi_dev_state_d0(ov5670->dev);
        if (full_power) {
                ret = ov5670_runtime_resume(ov5670->dev);
                if (ret) {
                        dev_err_probe(ov5670->dev, ret, "Power up failed\n");
                        goto error_endpoint;
                }

                /* Check module identity */
                ret = ov5670_identify_module(ov5670);
                if (ret) {
                        dev_err_probe(ov5670->dev, ret, "ov5670_identify_module() error\n");
                        goto error_power_off;
                }
        }

        mutex_init(&ov5670->mutex);

        /* Set default mode to max resolution */
        ov5670->cur_mode = &supported_modes[0];

        ret = ov5670_init_controls(ov5670);
        if (ret) {
                dev_err_probe(ov5670->dev, ret, "ov5670_init_controls() error\n");
                goto error_mutex_destroy;
        }

        ov5670->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
                            V4L2_SUBDEV_FL_HAS_EVENTS;
        ov5670->sd.entity.ops = &ov5670_subdev_entity_ops;
        ov5670->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;

        /* Source pad initialization */
        ov5670->pad.flags = MEDIA_PAD_FL_SOURCE;
        ret = media_entity_pads_init(&ov5670->sd.entity, 1, &ov5670->pad);
        if (ret) {
                dev_err_probe(ov5670->dev, ret, "media_entity_pads_init() error\n");
                goto error_handler_free;
        }

        /* Set the device's state to active if it's in D0 state. */
        if (full_power)
                pm_runtime_set_active(ov5670->dev);
        pm_runtime_enable(ov5670->dev);

        /* Async register for subdev */
        ret = v4l2_async_register_subdev_sensor(&ov5670->sd);
        if (ret < 0) {
                dev_err_probe(ov5670->dev, ret, "v4l2_async_register_subdev() error\n");
                goto error_pm_disable;
        }

        pm_runtime_idle(ov5670->dev);

        return 0;

error_pm_disable:
        pm_runtime_disable(ov5670->dev);

        media_entity_cleanup(&ov5670->sd.entity);

error_handler_free:
        v4l2_ctrl_handler_free(ov5670->sd.ctrl_handler);

error_mutex_destroy:
        mutex_destroy(&ov5670->mutex);

error_power_off:
        if (full_power)
                ov5670_runtime_suspend(ov5670->dev);

error_endpoint:
        v4l2_fwnode_endpoint_free(&ov5670->endpoint);

        return ret;
}

static void ov5670_remove(struct i2c_client *client)
{
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct ov5670 *ov5670 = to_ov5670(sd);

        v4l2_async_unregister_subdev(sd);
        media_entity_cleanup(&sd->entity);
        v4l2_ctrl_handler_free(sd->ctrl_handler);
        mutex_destroy(&ov5670->mutex);

        pm_runtime_disable(ov5670->dev);
        ov5670_runtime_suspend(ov5670->dev);

        v4l2_fwnode_endpoint_free(&ov5670->endpoint);
}

static const struct dev_pm_ops ov5670_pm_ops = {
        SET_RUNTIME_PM_OPS(ov5670_runtime_suspend, ov5670_runtime_resume, NULL)
};

#ifdef CONFIG_ACPI
static const struct acpi_device_id ov5670_acpi_ids[] = {
        { "INT3479" },
        { /* sentinel */ }
};

MODULE_DEVICE_TABLE(acpi, ov5670_acpi_ids);
#endif

static const struct of_device_id ov5670_of_ids[] = {
        { .compatible = "ovti,ov5670" },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, ov5670_of_ids);

static struct i2c_driver ov5670_i2c_driver = {
        .driver = {
                .name = "ov5670",
                .pm = &ov5670_pm_ops,
                .acpi_match_table = ACPI_PTR(ov5670_acpi_ids),
                .of_match_table = ov5670_of_ids,
        },
        .probe = ov5670_probe,
        .remove = ov5670_remove,
        .flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
};

module_i2c_driver(ov5670_i2c_driver);

MODULE_AUTHOR("Rapolu, Chiranjeevi");
MODULE_AUTHOR("Yang, Hyungwoo");
MODULE_DESCRIPTION("Omnivision ov5670 sensor driver");
MODULE_LICENSE("GPL v2");