// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2025 Linaro Ltd

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/units.h>
#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>

#define S5K3M5_LINK_FREQ_602P5MHZ       (602500ULL * HZ_PER_KHZ)
#define S5K3M5_MCLK_FREQ_24MHZ          (24 * HZ_PER_MHZ)
#define S5K3M5_DATA_LANES               4

/* Register map is similar to MIPI CCS compliant camera sensors */
#define S5K3M5_REG_CHIP_ID              CCI_REG16(0x0000)
#define S5K3M5_CHIP_ID                  0x30d5

/* Both streaming and flipping settings are controlled at the same time */
#define S5K3M5_REG_CTRL_MODE            CCI_REG16(0x0100)
#define S5K3M5_MODE_STREAMING           BIT(8)
#define S5K3M5_VFLIP                    BIT(1)
#define S5K3M5_HFLIP                    BIT(0)

#define S5K3M5_REG_EXPOSURE             CCI_REG16(0x0202)
#define S5K3M5_EXPOSURE_MIN             8
#define S5K3M5_EXPOSURE_STEP            1
#define S5K3M5_EXPOSURE_MARGIN          4

#define S5K3M5_REG_AGAIN                CCI_REG16(0x0204)
#define S5K3M5_AGAIN_MIN                1
#define S5K3M5_AGAIN_MAX                16
#define S5K3M5_AGAIN_STEP               1
#define S5K3M5_AGAIN_DEFAULT            1
#define S5K3M5_AGAIN_SHIFT              5

#define S5K3M5_REG_VTS                  CCI_REG16(0x0340)
#define S5K3M5_VTS_MAX                  0xffff

#define S5K3M5_REG_HTS                  CCI_REG16(0x0342)
#define S5K3M5_REG_X_ADDR_START         CCI_REG16(0x0344)
#define S5K3M5_REG_Y_ADDR_START         CCI_REG16(0x0346)
#define S5K3M5_REG_X_ADDR_END           CCI_REG16(0x0348)
#define S5K3M5_REG_Y_ADDR_END           CCI_REG16(0x034a)
#define S5K3M5_REG_X_OUTPUT_SIZE        CCI_REG16(0x034c)
#define S5K3M5_REG_Y_OUTPUT_SIZE        CCI_REG16(0x034e)

#define S5K3M5_REG_TEST_PATTERN         CCI_REG16(0x0600)

#define to_s5k3m5(_sd)                  container_of(_sd, struct s5k3m5, sd)

static const s64 s5k3m5_link_freq_menu[] = {
        S5K3M5_LINK_FREQ_602P5MHZ,
};

/* List of supported formats to cover horizontal and vertical flip controls */
static const u32 s5k3m5_mbus_formats[] = {
        MEDIA_BUS_FMT_SGRBG10_1X10,     MEDIA_BUS_FMT_SRGGB10_1X10,
        MEDIA_BUS_FMT_SBGGR10_1X10,     MEDIA_BUS_FMT_SGBRG10_1X10,
};

struct s5k3m5_reg_list {
        const struct cci_reg_sequence *regs;
        unsigned int num_regs;
};

struct s5k3m5_mode {
        u32 width;                      /* Frame width in pixels */
        u32 height;                     /* Frame height in pixels */
        u32 hts;                        /* Horizontal timing size */
        u32 vts;                        /* Default vertical timing size */
        u32 exposure;                   /* Default exposure value */

        const struct s5k3m5_reg_list reg_list;  /* Sensor register setting */
};

static const char * const s5k3m5_test_pattern_menu[] = {
        "Disabled",
        "Solid colour",
        "Colour bars",
        "Fade to grey colour bars",
        "PN9",
};

static const char * const s5k3m5_supply_names[] = {
        "afvdd",        /* Autofocus power */
        "vdda",         /* Analog power */
        "vddd",         /* Digital core power */
        "vddio",        /* Digital I/O power */
};

#define S5K3M5_NUM_SUPPLIES     ARRAY_SIZE(s5k3m5_supply_names)

struct s5k3m5 {
        struct device *dev;
        struct regmap *regmap;
        struct clk *mclk;
        struct gpio_desc *reset_gpio;
        struct regulator_bulk_data supplies[S5K3M5_NUM_SUPPLIES];

        struct v4l2_subdev sd;
        struct media_pad pad;

        struct v4l2_ctrl_handler ctrl_handler;
        struct v4l2_ctrl *link_freq;
        struct v4l2_ctrl *pixel_rate;
        struct v4l2_ctrl *hblank;
        struct v4l2_ctrl *vblank;
        struct v4l2_ctrl *exposure;
        struct v4l2_ctrl *vflip;
        struct v4l2_ctrl *hflip;

        const struct s5k3m5_mode *mode;
};

static const struct cci_reg_sequence burst_array_setting[] = {
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0549 },
        { CCI_REG16(0x6f12), 0x0448 },
        { CCI_REG16(0x6f12), 0x054a },
        { CCI_REG16(0x6f12), 0xc1f8 },
        { CCI_REG16(0x6f12), 0xc804 },
        { CCI_REG16(0x6f12), 0x101a },
        { CCI_REG16(0x6f12), 0xa1f8 },
        { CCI_REG16(0x6f12), 0xcc04 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x1bb9 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x4210 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x2e50 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x7000 },
        { CCI_REG16(0x6f12), 0x10b5 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x4ff9 },
        { CCI_REG16(0x6f12), 0x9949 },
        { CCI_REG16(0x6f12), 0x0120 },
        { CCI_REG16(0x6f12), 0x0880 },
        { CCI_REG16(0x6f12), 0x10bd },
        { CCI_REG16(0x6f12), 0x2de9 },
        { CCI_REG16(0x6f12), 0xf041 },
        { CCI_REG16(0x6f12), 0x974c },
        { CCI_REG16(0x6f12), 0x954f },
        { CCI_REG16(0x6f12), 0x0026 },
        { CCI_REG16(0x6f12), 0xb4f8 },
        { CCI_REG16(0x6f12), 0x6a52 },
        { CCI_REG16(0x6f12), 0x3888 },
        { CCI_REG16(0x6f12), 0x08b1 },
        { CCI_REG16(0x6f12), 0xa4f8 },
        { CCI_REG16(0x6f12), 0x6a62 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x43f9 },
        { CCI_REG16(0x6f12), 0x3e80 },
        { CCI_REG16(0x6f12), 0xa4f8 },
        { CCI_REG16(0x6f12), 0x6a52 },
        { CCI_REG16(0x6f12), 0xbde8 },
        { CCI_REG16(0x6f12), 0xf081 },
        { CCI_REG16(0x6f12), 0x2de9 },
        { CCI_REG16(0x6f12), 0xf041 },
        { CCI_REG16(0x6f12), 0x0746 },
        { CCI_REG16(0x6f12), 0x8c48 },
        { CCI_REG16(0x6f12), 0x0e46 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0x4068 },
        { CCI_REG16(0x6f12), 0x84b2 },
        { CCI_REG16(0x6f12), 0x050c },
        { CCI_REG16(0x6f12), 0x2146 },
        { CCI_REG16(0x6f12), 0x2846 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x36f9 },
        { CCI_REG16(0x6f12), 0x3146 },
        { CCI_REG16(0x6f12), 0x3846 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x37f9 },
        { CCI_REG16(0x6f12), 0x874f },
        { CCI_REG16(0x6f12), 0x4df2 },
        { CCI_REG16(0x6f12), 0x0c26 },
        { CCI_REG16(0x6f12), 0x4ff4 },
        { CCI_REG16(0x6f12), 0x8061 },
        { CCI_REG16(0x6f12), 0x3a78 },
        { CCI_REG16(0x6f12), 0x3046 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x29f9 },
        { CCI_REG16(0x6f12), 0x7878 },
        { CCI_REG16(0x6f12), 0xb8b3 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0x8021 },
        { CCI_REG16(0x6f12), 0x3046 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x22f9 },
        { CCI_REG16(0x6f12), 0x8048 },
        { CCI_REG16(0x6f12), 0x0088 },
        { CCI_REG16(0x6f12), 0x804b },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x5c02 },
        { CCI_REG16(0x6f12), 0x7e48 },
        { CCI_REG16(0x6f12), 0x001d },
        { CCI_REG16(0x6f12), 0x0088 },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x5e02 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0x5c02 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0x5e12 },
        { CCI_REG16(0x6f12), 0x4218 },
        { CCI_REG16(0x6f12), 0x02d0 },
        { CCI_REG16(0x6f12), 0x8002 },
        { CCI_REG16(0x6f12), 0xb0fb },
        { CCI_REG16(0x6f12), 0xf2f2 },
        { CCI_REG16(0x6f12), 0x91b2 },
        { CCI_REG16(0x6f12), 0x784a },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x6012 },
        { CCI_REG16(0x6f12), 0xb2f8 },
        { CCI_REG16(0x6f12), 0x1602 },
        { CCI_REG16(0x6f12), 0xb2f8 },
        { CCI_REG16(0x6f12), 0x1422 },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x9805 },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x9a25 },
        { CCI_REG16(0x6f12), 0x8018 },
        { CCI_REG16(0x6f12), 0x04d0 },
        { CCI_REG16(0x6f12), 0x9202 },
        { CCI_REG16(0x6f12), 0xb2fb },
        { CCI_REG16(0x6f12), 0xf0f0 },
        { CCI_REG16(0x6f12), 0xa3f8 },
        { CCI_REG16(0x6f12), 0x9c05 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0x9c05 },
        { CCI_REG16(0x6f12), 0x0a18 },
        { CCI_REG16(0x6f12), 0x01fb },
        { CCI_REG16(0x6f12), 0x1020 },
        { CCI_REG16(0x6f12), 0x40f3 },
        { CCI_REG16(0x6f12), 0x9510 },
        { CCI_REG16(0x6f12), 0x1028 },
        { CCI_REG16(0x6f12), 0x06dc },
        { CCI_REG16(0x6f12), 0x0028 },
        { CCI_REG16(0x6f12), 0x05da },
        { CCI_REG16(0x6f12), 0x0020 },
        { CCI_REG16(0x6f12), 0x03e0 },
        { CCI_REG16(0x6f12), 0xffe7 },
        { CCI_REG16(0x6f12), 0x0122 },
        { CCI_REG16(0x6f12), 0xc5e7 },
        { CCI_REG16(0x6f12), 0x1020 },
        { CCI_REG16(0x6f12), 0x6849 },
        { CCI_REG16(0x6f12), 0x0880 },
        { CCI_REG16(0x6f12), 0x2146 },
        { CCI_REG16(0x6f12), 0x2846 },
        { CCI_REG16(0x6f12), 0xbde8 },
        { CCI_REG16(0x6f12), 0xf041 },
        { CCI_REG16(0x6f12), 0x0122 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0xe2b8 },
        { CCI_REG16(0x6f12), 0xf0b5 },
        { CCI_REG16(0x6f12), 0x644c },
        { CCI_REG16(0x6f12), 0xdde9 },
        { CCI_REG16(0x6f12), 0x0565 },
        { CCI_REG16(0x6f12), 0x08b1 },
        { CCI_REG16(0x6f12), 0x2788 },
        { CCI_REG16(0x6f12), 0x0760 },
        { CCI_REG16(0x6f12), 0x09b1 },
        { CCI_REG16(0x6f12), 0x6088 },
        { CCI_REG16(0x6f12), 0x0860 },
        { CCI_REG16(0x6f12), 0x12b1 },
        { CCI_REG16(0x6f12), 0xa088 },
        { CCI_REG16(0x6f12), 0x401c },
        { CCI_REG16(0x6f12), 0x1060 },
        { CCI_REG16(0x6f12), 0x0bb1 },
        { CCI_REG16(0x6f12), 0xe088 },
        { CCI_REG16(0x6f12), 0x1860 },
        { CCI_REG16(0x6f12), 0x0eb1 },
        { CCI_REG16(0x6f12), 0xa07b },
        { CCI_REG16(0x6f12), 0x3060 },
        { CCI_REG16(0x6f12), 0x002d },
        { CCI_REG16(0x6f12), 0x01d0 },
        { CCI_REG16(0x6f12), 0xe07b },
        { CCI_REG16(0x6f12), 0x2860 },
        { CCI_REG16(0x6f12), 0xf0bd },
        { CCI_REG16(0x6f12), 0x70b5 },
        { CCI_REG16(0x6f12), 0x0646 },
        { CCI_REG16(0x6f12), 0x5048 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0x8068 },
        { CCI_REG16(0x6f12), 0x84b2 },
        { CCI_REG16(0x6f12), 0x050c },
        { CCI_REG16(0x6f12), 0x2146 },
        { CCI_REG16(0x6f12), 0x2846 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0xbef8 },
        { CCI_REG16(0x6f12), 0x3046 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0xc5f8 },
        { CCI_REG16(0x6f12), 0x5248 },
        { CCI_REG16(0x6f12), 0x0368 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0x7401 },
        { CCI_REG16(0x6f12), 0x010a },
        { CCI_REG16(0x6f12), 0x5048 },
        { CCI_REG16(0x6f12), 0x4268 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x5010 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x7511 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x5210 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0x7811 },
        { CCI_REG16(0x6f12), 0x090a },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x5810 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x7911 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x5a10 },
        { CCI_REG16(0x6f12), 0x33f8 },
        { CCI_REG16(0x6f12), 0xf01f },
        { CCI_REG16(0x6f12), 0x0068 },
        { CCI_REG16(0x6f12), 0x090a },
        { CCI_REG16(0x6f12), 0x00f8 },
        { CCI_REG16(0x6f12), 0xce1f },
        { CCI_REG16(0x6f12), 0x5978 },
        { CCI_REG16(0x6f12), 0x8170 },
        { CCI_REG16(0x6f12), 0x5988 },
        { CCI_REG16(0x6f12), 0x090a },
        { CCI_REG16(0x6f12), 0x0171 },
        { CCI_REG16(0x6f12), 0xd978 },
        { CCI_REG16(0x6f12), 0x8171 },
        { CCI_REG16(0x6f12), 0x988c },
        { CCI_REG16(0x6f12), 0x000a },
        { CCI_REG16(0x6f12), 0x9074 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x2500 },
        { CCI_REG16(0x6f12), 0x1075 },
        { CCI_REG16(0x6f12), 0xd88c },
        { CCI_REG16(0x6f12), 0x000a },
        { CCI_REG16(0x6f12), 0x9075 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x2700 },
        { CCI_REG16(0x6f12), 0x1076 },
        { CCI_REG16(0x6f12), 0xb3f8 },
        { CCI_REG16(0x6f12), 0xb000 },
        { CCI_REG16(0x6f12), 0x000a },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x7e00 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0xb100 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x8000 },
        { CCI_REG16(0x6f12), 0x2f48 },
        { CCI_REG16(0x6f12), 0x90f8 },
        { CCI_REG16(0x6f12), 0xb313 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x8210 },
        { CCI_REG16(0x6f12), 0x90f8 },
        { CCI_REG16(0x6f12), 0xb103 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x8400 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0xb400 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x8600 },
        { CCI_REG16(0x6f12), 0x0020 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x8800 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x6211 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x9610 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0112 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0x9e10 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0212 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xa010 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xa200 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xa400 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0512 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xa610 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0612 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xa810 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0712 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xaa10 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xac00 },
        { CCI_REG16(0x6f12), 0x5a20 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xad00 },
        { CCI_REG16(0x6f12), 0x93f8 },
        { CCI_REG16(0x6f12), 0x0902 },
        { CCI_REG16(0x6f12), 0x82f8 },
        { CCI_REG16(0x6f12), 0xae00 },
        { CCI_REG16(0x6f12), 0x2146 },
        { CCI_REG16(0x6f12), 0x2846 },
        { CCI_REG16(0x6f12), 0xbde8 },
        { CCI_REG16(0x6f12), 0x7040 },
        { CCI_REG16(0x6f12), 0x0122 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x47b8 },
        { CCI_REG16(0x6f12), 0x10b5 },
        { CCI_REG16(0x6f12), 0x0f4c },
        { CCI_REG16(0x6f12), 0x0020 },
        { CCI_REG16(0x6f12), 0x2080 },
        { CCI_REG16(0x6f12), 0xaff2 },
        { CCI_REG16(0x6f12), 0x3321 },
        { CCI_REG16(0x6f12), 0x1748 },
        { CCI_REG16(0x6f12), 0x0161 },
        { CCI_REG16(0x6f12), 0xaff2 },
        { CCI_REG16(0x6f12), 0x2d21 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0x8161 },
        { CCI_REG16(0x6f12), 0xaff2 },
        { CCI_REG16(0x6f12), 0x1121 },
        { CCI_REG16(0x6f12), 0x1448 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x45f8 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0xaff2 },
        { CCI_REG16(0x6f12), 0x2911 },
        { CCI_REG16(0x6f12), 0x6060 },
        { CCI_REG16(0x6f12), 0x1148 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x3ef8 },
        { CCI_REG16(0x6f12), 0x0022 },
        { CCI_REG16(0x6f12), 0xaff2 },
        { CCI_REG16(0x6f12), 0x6b11 },
        { CCI_REG16(0x6f12), 0xa060 },
        { CCI_REG16(0x6f12), 0x0f48 },
        { CCI_REG16(0x6f12), 0x00f0 },
        { CCI_REG16(0x6f12), 0x37f8 },
        { CCI_REG16(0x6f12), 0xe060 },
        { CCI_REG16(0x6f12), 0x10bd },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x4200 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x2e50 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x41d0 },
        { CCI_REG16(0x6f12), 0x4000 },
        { CCI_REG16(0x6f12), 0x9404 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x38e0 },
        { CCI_REG16(0x6f12), 0x4000 },
        { CCI_REG16(0x6f12), 0xd000 },
        { CCI_REG16(0x6f12), 0x4000 },
        { CCI_REG16(0x6f12), 0xa410 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x2c66 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x0890 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x3620 },
        { CCI_REG16(0x6f12), 0x2000 },
        { CCI_REG16(0x6f12), 0x0840 },
        { CCI_REG16(0x6f12), 0x0001 },
        { CCI_REG16(0x6f12), 0x020d },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x67cd },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x3ae1 },
        { CCI_REG16(0x6f12), 0x45f6 },
        { CCI_REG16(0x6f12), 0x250c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x45f6 },
        { CCI_REG16(0x6f12), 0xf31c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x4af2 },
        { CCI_REG16(0x6f12), 0xd74c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x40f2 },
        { CCI_REG16(0x6f12), 0x0d2c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x010c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x46f2 },
        { CCI_REG16(0x6f12), 0xcd7c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x4af6 },
        { CCI_REG16(0x6f12), 0xe75c },
        { CCI_REG16(0x6f12), 0xc0f2 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x6f12), 0x6047 },
        { CCI_REG16(0x6f12), 0x30d5 },
        { CCI_REG16(0x6f12), 0x00fc },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x000e },
};

static const struct cci_reg_sequence init_array_setting[] = {
        { CCI_REG16(0x602a), 0x41d0 },
        { CCI_REG16(0x6f12), 0x0100 },
        { CCI_REG16(0x602a), 0x1662 },
        { CCI_REG16(0x6f12), 0x1e00 },
        { CCI_REG16(0x602a), 0x1c9a },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x602a), 0x0ff2 },
        { CCI_REG16(0x6f12), 0x0020 },
        { CCI_REG16(0x602a), 0x0ef6 },
        { CCI_REG16(0x6f12), 0x0100 },
        { CCI_REG16(0x602a), 0x23b2 },
        { CCI_REG16(0x6f12), 0x0001 },
        { CCI_REG16(0x602a), 0x0fe4 },
        { CCI_REG16(0x6f12), 0x0107 },
        { CCI_REG16(0x6f12), 0x07d0 },
        { CCI_REG16(0x602a), 0x12f8 },
        { CCI_REG16(0x6f12), 0x3d09 },
        { CCI_REG16(0x602a), 0x0e18 },
        { CCI_REG16(0x6f12), 0x0040 },
        { CCI_REG16(0x602a), 0x1066 },
        { CCI_REG16(0x6f12), 0x000c },
        { CCI_REG16(0x602a), 0x13de },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x602a), 0x12f2 },
        { CCI_REG16(0x6f12), 0x0f0f },
        { CCI_REG16(0x602a), 0x13dc },
        { CCI_REG16(0x6f12), 0x806f },
        { CCI_REG16(0xf46e), 0x00c3 },
        { CCI_REG16(0xf46c), 0xbfa0 },
        { CCI_REG16(0xf44a), 0x0007 },
        { CCI_REG16(0xf456), 0x000a },
        { CCI_REG16(0x6028), 0x2000 },
        { CCI_REG16(0x602a), 0x12f6 },
        { CCI_REG16(0x6f12), 0x7008 },
        { CCI_REG16(0x0bc6), 0x0000 },
        { CCI_REG16(0x0b36), 0x0001 },
};

static const struct cci_reg_sequence s5k3m5_4208x3120_30fps_mode[] = {
        { CCI_REG16(0x6214), 0x7971 },
        { CCI_REG16(0x6218), 0x7150 },
        { S5K3M5_REG_X_ADDR_START,  0x0000 },
        { S5K3M5_REG_Y_ADDR_START,  0x0008 },
        { S5K3M5_REG_X_ADDR_END,    0x1077 },
        { S5K3M5_REG_Y_ADDR_END,    0x0c37 },
        { S5K3M5_REG_X_OUTPUT_SIZE, 0x1070 },
        { S5K3M5_REG_Y_OUTPUT_SIZE, 0x0c30 },
        { S5K3M5_REG_VTS, 0x0cf2 },
        { S5K3M5_REG_HTS, 0x12f0 },

        { CCI_REG16(0x0900), 0x0011 },
        { CCI_REG16(0x0380), 0x0001 },
        { CCI_REG16(0x0382), 0x0001 },
        { CCI_REG16(0x0384), 0x0001 },
        { CCI_REG16(0x0386), 0x0001 },
        { CCI_REG16(0x0402), 0x1010 },
        { CCI_REG16(0x0404), 0x1000 },
        { CCI_REG16(0x0350), 0x0008 },
        { CCI_REG16(0x0352), 0x0000 },

        /* Clock settings */
        { CCI_REG16(0x0136), 0x1800 },
        { CCI_REG16(0x013e), 0x0000 },
        { CCI_REG16(0x0300), 0x0008 },
        { CCI_REG16(0x0302), 0x0001 },
        { CCI_REG16(0x0304), 0x0006 },
        { CCI_REG16(0x0306), 0x00f1 },
        { CCI_REG16(0x0308), 0x0008 },
        { CCI_REG16(0x030a), 0x0001 },
        { CCI_REG16(0x030c), 0x0000 },
        { CCI_REG16(0x030e), 0x0003 },
        { CCI_REG16(0x0310), 0x005a },
        { CCI_REG16(0x0312), 0x0000 },

        { CCI_REG16(0x0b06), 0x0101 },
        { CCI_REG16(0x6028), 0x2000 },
        { CCI_REG16(0x602a), 0x1ff6 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x021e), 0x0000 },
        { CCI_REG16(0x0202), 0x0100 },
        { CCI_REG16(0x0204), 0x0020 },
        { CCI_REG16(0x0d00), 0x0100 },
        { CCI_REG16(0x0d02), 0x0001 },
        { CCI_REG16(0x0114), 0x0301 },
        { CCI_REG16(0x0d06), 0x0208 },
        { CCI_REG16(0x0d08), 0x0300 },
        { CCI_REG16(0x6028), 0x2000 },
        { CCI_REG16(0x602a), 0x0f10 },
        { CCI_REG16(0x6f12), 0x0003 },
        { CCI_REG16(0x602a), 0x0f12 },
        { CCI_REG16(0x6f12), 0x0200 },
        { CCI_REG16(0x602a), 0x2bc0 },
        { CCI_REG16(0x6f12), 0x0001 },
        { CCI_REG16(0x0b30), 0x0000 },
        { CCI_REG16(0x0b32), 0x0000 },
        { CCI_REG16(0x0b34), 0x0001 },
        { CCI_REG16(0x0804), 0x0200 },
        { CCI_REG16(0x0810), 0x0020 },
};

static const struct cci_reg_sequence s5k3m5_2104x1184_60fps_mode[] = {
        { CCI_REG16(0x6214), 0x7971 },
        { CCI_REG16(0x6218), 0x7150 },
        { S5K3M5_REG_X_ADDR_START,  0x0000 },
        { S5K3M5_REG_Y_ADDR_START,  0x0180 },
        { S5K3M5_REG_X_ADDR_END,    0x1077 },
        { S5K3M5_REG_Y_ADDR_END,    0x0abf },
        { S5K3M5_REG_X_OUTPUT_SIZE, 0x0838 },
        { S5K3M5_REG_Y_OUTPUT_SIZE, 0x04a0 },
        { S5K3M5_REG_VTS, 0x0658 },
        { S5K3M5_REG_HTS, 0x1340 },

        { CCI_REG16(0x0900), 0x0112 },
        { CCI_REG16(0x0380), 0x0001 },
        { CCI_REG16(0x0382), 0x0001 },
        { CCI_REG16(0x0384), 0x0001 },
        { CCI_REG16(0x0386), 0x0003 },
        { CCI_REG16(0x0402), 0x1010 },
        { CCI_REG16(0x0404), 0x2000 },
        { CCI_REG16(0x0350), 0x0004 },
        { CCI_REG16(0x0352), 0x0000 },

        /* Clock settings */
        { CCI_REG16(0x0136), 0x1800 },
        { CCI_REG16(0x013e), 0x0000 },
        { CCI_REG16(0x0300), 0x0008 },
        { CCI_REG16(0x0302), 0x0001 },
        { CCI_REG16(0x0304), 0x0006 },
        { CCI_REG16(0x0306), 0x00f1 },
        { CCI_REG16(0x0308), 0x0008 },
        { CCI_REG16(0x030a), 0x0001 },
        { CCI_REG16(0x030c), 0x0000 },
        { CCI_REG16(0x030e), 0x0003 },
        { CCI_REG16(0x0310), 0x0063 },
        { CCI_REG16(0x0312), 0x0001 },

        { CCI_REG16(0x0b06), 0x0101 },
        { CCI_REG16(0x6028), 0x2000 },
        { CCI_REG16(0x602a), 0x1ff6 },
        { CCI_REG16(0x6f12), 0x0000 },
        { CCI_REG16(0x021e), 0x0000 },
        { CCI_REG16(0x0202), 0x0100 },
        { CCI_REG16(0x0204), 0x0020 },
        { CCI_REG16(0x0d00), 0x0101 },
        { CCI_REG16(0x0d02), 0x0101 },
        { CCI_REG16(0x0114), 0x0301 },
        { CCI_REG16(0x0d06), 0x0208 },
        { CCI_REG16(0x0d08), 0x0300 },
        { CCI_REG16(0x6028), 0x2000 },
        { CCI_REG16(0x602a), 0x0f10 },
        { CCI_REG16(0x6f12), 0x0003 },
        { CCI_REG16(0x602a), 0x0f12 },
        { CCI_REG16(0x6f12), 0x0200 },
        { CCI_REG16(0x602a), 0x2bc0 },
        { CCI_REG16(0x6f12), 0x0001 },
        { CCI_REG16(0x0b30), 0x0000 },
        { CCI_REG16(0x0b32), 0x0000 },
        { CCI_REG16(0x0b34), 0x0001 },
        { CCI_REG16(0x0804), 0x0200 },
        { CCI_REG16(0x0810), 0x0020 },
};

static const struct s5k3m5_mode s5k3m5_supported_modes[] = {
        {
                .width = 4208,
                .height = 3120,
                .hts = 4848,
                .vts = 3314,
                .exposure = 256,
                .reg_list = {
                        .regs = s5k3m5_4208x3120_30fps_mode,
                        .num_regs = ARRAY_SIZE(s5k3m5_4208x3120_30fps_mode),
                },
        },
        {
                .width = 2104,
                .height = 1184,
                .hts = 4928,
                .vts = 1624,
                .exposure = 256,
                .reg_list = {
                        .regs = s5k3m5_2104x1184_60fps_mode,
                        .num_regs = ARRAY_SIZE(s5k3m5_2104x1184_60fps_mode),
                },
        },
};

static int s5k3m5_set_ctrl(struct v4l2_ctrl *ctrl)
{
        struct s5k3m5 *s5k3m5 = container_of(ctrl->handler, struct s5k3m5,
                                             ctrl_handler);
        const struct s5k3m5_mode *mode = s5k3m5->mode;
        s64 exposure_max;
        int ret;

        /* Propagate change of current control to all related controls */
        switch (ctrl->id) {
        case V4L2_CID_HFLIP:
        case V4L2_CID_VFLIP:
                /* The orientation settings are applied along with streaming */
                return 0;
        case V4L2_CID_VBLANK:
                /* Update max exposure while meeting expected vblanking */
                exposure_max = mode->height + ctrl->val - S5K3M5_EXPOSURE_MARGIN;
                __v4l2_ctrl_modify_range(s5k3m5->exposure,
                                         s5k3m5->exposure->minimum,
                                         exposure_max,
                                         s5k3m5->exposure->step,
                                         s5k3m5->exposure->default_value);
                break;
        }

        /* V4L2 controls are applied, when sensor is powered up for streaming */
        if (!pm_runtime_get_if_active(s5k3m5->dev))
                return 0;

        switch (ctrl->id) {
        case V4L2_CID_ANALOGUE_GAIN:
                ret = cci_write(s5k3m5->regmap, S5K3M5_REG_AGAIN,
                                ctrl->val << S5K3M5_AGAIN_SHIFT, NULL);
                break;
        case V4L2_CID_EXPOSURE:
                ret = cci_write(s5k3m5->regmap, S5K3M5_REG_EXPOSURE,
                                ctrl->val, NULL);
                break;
        case V4L2_CID_VBLANK:
                ret = cci_write(s5k3m5->regmap, S5K3M5_REG_VTS,
                                ctrl->val + mode->height, NULL);
                break;
        case V4L2_CID_TEST_PATTERN:
                ret = cci_write(s5k3m5->regmap, S5K3M5_REG_TEST_PATTERN,
                                ctrl->val, NULL);
                break;
        default:
                ret = -EINVAL;
                break;
        }

        pm_runtime_put(s5k3m5->dev);

        return ret;
}

static const struct v4l2_ctrl_ops s5k3m5_ctrl_ops = {
        .s_ctrl = s5k3m5_set_ctrl,
};

static inline u64 s5k3m5_freq_to_pixel_rate(const u64 freq)
{
        return div_u64(freq * 2 * S5K3M5_DATA_LANES, 10);
}

static int s5k3m5_init_controls(struct s5k3m5 *s5k3m5)
{
        struct v4l2_ctrl_handler *ctrl_hdlr = &s5k3m5->ctrl_handler;
        const struct s5k3m5_mode *mode = s5k3m5->mode;
        s64 pixel_rate, hblank, vblank, exposure_max;
        struct v4l2_fwnode_device_properties props;
        int ret;

        v4l2_ctrl_handler_init(ctrl_hdlr, 9);

        s5k3m5->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                        V4L2_CID_LINK_FREQ,
                                        ARRAY_SIZE(s5k3m5_link_freq_menu) - 1,
                                        0, s5k3m5_link_freq_menu);
        if (s5k3m5->link_freq)
                s5k3m5->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        pixel_rate = s5k3m5_freq_to_pixel_rate(s5k3m5_link_freq_menu[0]);
        s5k3m5->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                               V4L2_CID_PIXEL_RATE,
                                               0, pixel_rate, 1, pixel_rate);

        hblank = mode->hts - mode->width;
        s5k3m5->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                           V4L2_CID_HBLANK, hblank,
                                           hblank, 1, hblank);
        if (s5k3m5->hblank)
                s5k3m5->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;

        vblank = mode->vts - mode->height;
        s5k3m5->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                           V4L2_CID_VBLANK, vblank,
                                           S5K3M5_VTS_MAX - mode->height, 1,
                                           vblank);

        v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
                          S5K3M5_AGAIN_MIN, S5K3M5_AGAIN_MAX,
                          S5K3M5_AGAIN_STEP, S5K3M5_AGAIN_DEFAULT);

        exposure_max = mode->vts - S5K3M5_EXPOSURE_MARGIN;
        s5k3m5->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                             V4L2_CID_EXPOSURE,
                                             S5K3M5_EXPOSURE_MIN,
                                             exposure_max,
                                             S5K3M5_EXPOSURE_STEP,
                                             mode->exposure);

        v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                     V4L2_CID_TEST_PATTERN,
                                     ARRAY_SIZE(s5k3m5_test_pattern_menu) - 1,
                                     0, 0, s5k3m5_test_pattern_menu);

        s5k3m5->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                          V4L2_CID_HFLIP, 0, 1, 1, 0);
        if (s5k3m5->hflip)
                s5k3m5->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;

        s5k3m5->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                          V4L2_CID_VFLIP, 0, 1, 1, 0);
        if (s5k3m5->vflip)
                s5k3m5->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;

        ret = v4l2_fwnode_device_parse(s5k3m5->dev, &props);
        if (ret)
                goto error_free_hdlr;

        ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &s5k3m5_ctrl_ops,
                                              &props);
        if (ret)
                goto error_free_hdlr;

        s5k3m5->sd.ctrl_handler = ctrl_hdlr;

        return 0;

error_free_hdlr:
        v4l2_ctrl_handler_free(ctrl_hdlr);

        return ret;
}

static int s5k3m5_enable_streams(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *state, u32 pad,
                                 u64 streams_mask)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);
        const struct s5k3m5_reg_list *reg_list = &s5k3m5->mode->reg_list;
        int ret;

        ret = pm_runtime_resume_and_get(s5k3m5->dev);
        if (ret)
                return ret;

        /* Page pointer */
        cci_write(s5k3m5->regmap, CCI_REG16(0x6028), 0x4000, &ret);

        /* Set version */
        cci_write(s5k3m5->regmap, CCI_REG16(0x0000), 0x0006, &ret);
        cci_write(s5k3m5->regmap, CCI_REG16(0x0000), S5K3M5_CHIP_ID, &ret);
        cci_write(s5k3m5->regmap, CCI_REG16(0x6214), 0x7971, &ret);
        cci_write(s5k3m5->regmap, CCI_REG16(0x6218), 0x7150, &ret);
        if (ret)
                goto error;

        usleep_range(4 * USEC_PER_MSEC, 5 * USEC_PER_MSEC);

        cci_write(s5k3m5->regmap, CCI_REG16(0x0a02), 0x7800, &ret);
        cci_write(s5k3m5->regmap, CCI_REG16(0x6028), 0x2000, &ret);
        cci_write(s5k3m5->regmap, CCI_REG16(0x602a), 0x3eac, &ret);

        /* Sensor init settings */
        cci_multi_reg_write(s5k3m5->regmap, burst_array_setting,
                            ARRAY_SIZE(burst_array_setting), &ret);
        cci_multi_reg_write(s5k3m5->regmap, init_array_setting,
                            ARRAY_SIZE(init_array_setting), &ret);
        cci_multi_reg_write(s5k3m5->regmap, reg_list->regs,
                            reg_list->num_regs, &ret);
        if (ret)
                goto error;

        ret = __v4l2_ctrl_handler_setup(s5k3m5->sd.ctrl_handler);

        cci_write(s5k3m5->regmap, S5K3M5_REG_CTRL_MODE,
                  S5K3M5_MODE_STREAMING |
                  (s5k3m5->vflip->val ? S5K3M5_VFLIP : 0) |
                  (s5k3m5->hflip->val ? S5K3M5_HFLIP : 0), &ret);
        if (ret)
                goto error;

        return 0;

error:
        dev_err(s5k3m5->dev, "failed to start streaming: %d\n", ret);
        pm_runtime_put_autosuspend(s5k3m5->dev);

        return ret;
}

static int s5k3m5_disable_streams(struct v4l2_subdev *sd,
                                  struct v4l2_subdev_state *state, u32 pad,
                                  u64 streams_mask)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);
        int ret;

        ret = cci_write(s5k3m5->regmap, S5K3M5_REG_CTRL_MODE, 0, NULL);
        if (ret)
                dev_err(s5k3m5->dev, "failed to stop streaming: %d\n", ret);

        pm_runtime_put_autosuspend(s5k3m5->dev);

        return ret;
}

static u32 s5k3m5_get_format_code(struct s5k3m5 *s5k3m5)
{
        unsigned int i;

        i = (s5k3m5->vflip->val ? 2 : 0) | (s5k3m5->hflip->val ? 1 : 0);

        return s5k3m5_mbus_formats[i];
}

static void s5k3m5_update_pad_format(struct s5k3m5 *s5k3m5,
                                     const struct s5k3m5_mode *mode,
                                     struct v4l2_mbus_framefmt *fmt)
{
        fmt->code = s5k3m5_get_format_code(s5k3m5);
        fmt->width = mode->width;
        fmt->height = mode->height;
        fmt->field = V4L2_FIELD_NONE;
        fmt->colorspace = V4L2_COLORSPACE_SRGB;
        fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
        fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
        fmt->xfer_func = V4L2_XFER_FUNC_NONE;
}

static int s5k3m5_set_pad_format(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *state,
                                 struct v4l2_subdev_format *fmt)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);
        s64 hblank, vblank, exposure_max;
        const struct s5k3m5_mode *mode;

        mode = v4l2_find_nearest_size(s5k3m5_supported_modes,
                                      ARRAY_SIZE(s5k3m5_supported_modes),
                                      width, height,
                                      fmt->format.width, fmt->format.height);

        s5k3m5_update_pad_format(s5k3m5, mode, &fmt->format);

        /* Format code could be updated with respect to flip controls */
        if (fmt->which == V4L2_SUBDEV_FORMAT_TRY || s5k3m5->mode == mode)
                goto set_format;

        /* Update limits and set FPS and exposure to default values */
        hblank = mode->hts - mode->width;
        __v4l2_ctrl_modify_range(s5k3m5->hblank, hblank, hblank, 1, hblank);

        vblank = mode->vts - mode->height;
        __v4l2_ctrl_modify_range(s5k3m5->vblank, vblank,
                                 S5K3M5_VTS_MAX - mode->height, 1, vblank);
        __v4l2_ctrl_s_ctrl(s5k3m5->vblank, vblank);

        exposure_max = mode->vts - S5K3M5_EXPOSURE_MARGIN;
        __v4l2_ctrl_modify_range(s5k3m5->exposure, S5K3M5_EXPOSURE_MIN,
                                 exposure_max, S5K3M5_EXPOSURE_STEP,
                                 mode->exposure);
        __v4l2_ctrl_s_ctrl(s5k3m5->exposure, mode->exposure);

        if (s5k3m5->sd.ctrl_handler->error)
                return s5k3m5->sd.ctrl_handler->error;

        s5k3m5->mode = mode;

set_format:
        *v4l2_subdev_state_get_format(state, 0) = fmt->format;

        return 0;
}

static int s5k3m5_enum_mbus_code(struct v4l2_subdev *sd,
                                 struct v4l2_subdev_state *sd_state,
                                 struct v4l2_subdev_mbus_code_enum *code)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);

        /* Media bus code index is constant, but code formats are not */
        if (code->index > 0)
                return -EINVAL;

        code->code = s5k3m5_get_format_code(s5k3m5);

        return 0;
}

static int s5k3m5_enum_frame_size(struct v4l2_subdev *sd,
                                  struct v4l2_subdev_state *sd_state,
                                  struct v4l2_subdev_frame_size_enum *fse)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);

        if (fse->index >= ARRAY_SIZE(s5k3m5_supported_modes))
                return -EINVAL;

        if (fse->code != s5k3m5_get_format_code(s5k3m5))
                return -EINVAL;

        fse->min_width = s5k3m5_supported_modes[fse->index].width;
        fse->max_width = fse->min_width;
        fse->min_height = s5k3m5_supported_modes[fse->index].height;
        fse->max_height = fse->min_height;

        return 0;
}

static int s5k3m5_get_selection(struct v4l2_subdev *sd,
                                struct v4l2_subdev_state *sd_state,
                                struct v4l2_subdev_selection *sel)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);

        if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
                return -EINVAL;

        switch (sel->target) {
        case V4L2_SEL_TGT_CROP:
        case V4L2_SEL_TGT_CROP_BOUNDS:
                sel->r.left = 0;
                sel->r.top = 0;
                sel->r.width = s5k3m5->mode->width;
                sel->r.height = s5k3m5->mode->width;
                return 0;
        default:
                return -EINVAL;
        }

        return 0;
}

static int s5k3m5_init_state(struct v4l2_subdev *sd,
                             struct v4l2_subdev_state *state)
{
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);
        struct v4l2_subdev_format fmt = {
                .which = V4L2_SUBDEV_FORMAT_TRY,
                .pad = 0,
                .format = {
                        /* Media bus code depends on current flip controls */
                        .width = s5k3m5->mode->width,
                        .height = s5k3m5->mode->height,
                },
        };

        s5k3m5_set_pad_format(sd, state, &fmt);

        return 0;
}

static const struct v4l2_subdev_video_ops s5k3m5_video_ops = {
        .s_stream = v4l2_subdev_s_stream_helper,
};

static const struct v4l2_subdev_pad_ops s5k3m5_pad_ops = {
        .set_fmt = s5k3m5_set_pad_format,
        .get_fmt = v4l2_subdev_get_fmt,
        .get_selection = s5k3m5_get_selection,
        .enum_mbus_code = s5k3m5_enum_mbus_code,
        .enum_frame_size = s5k3m5_enum_frame_size,
        .enable_streams = s5k3m5_enable_streams,
        .disable_streams = s5k3m5_disable_streams,
};

static const struct v4l2_subdev_ops s5k3m5_subdev_ops = {
        .video = &s5k3m5_video_ops,
        .pad = &s5k3m5_pad_ops,
};

static const struct v4l2_subdev_internal_ops s5k3m5_internal_ops = {
        .init_state = s5k3m5_init_state,
};

static const struct media_entity_operations s5k3m5_subdev_entity_ops = {
        .link_validate = v4l2_subdev_link_validate,
};

static int s5k3m5_identify_sensor(struct s5k3m5 *s5k3m5)
{
        u64 val;
        int ret;

        ret = cci_read(s5k3m5->regmap, S5K3M5_REG_CHIP_ID, &val, NULL);
        if (ret) {
                dev_err(s5k3m5->dev, "failed to read chip id: %d\n", ret);
                return ret;
        }

        if (val != S5K3M5_CHIP_ID) {
                dev_err(s5k3m5->dev, "chip id mismatch: %x!=%llx\n",
                        S5K3M5_CHIP_ID, val);
                return -ENODEV;
        }

        return 0;
}

static int s5k3m5_check_hwcfg(struct s5k3m5 *s5k3m5)
{
        struct fwnode_handle *fwnode = dev_fwnode(s5k3m5->dev), *ep;
        struct v4l2_fwnode_endpoint bus_cfg = {
                .bus = {
                        .mipi_csi2 = {
                                .num_data_lanes = S5K3M5_DATA_LANES,
                        },
                },
                .bus_type = V4L2_MBUS_CSI2_DPHY,
        };
        unsigned long freq_bitmap;
        int ret;

        if (!fwnode)
                return -ENODEV;

        ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
        if (!ep)
                return -EINVAL;

        ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
        fwnode_handle_put(ep);
        if (ret)
                return ret;

        if (bus_cfg.bus.mipi_csi2.num_data_lanes != S5K3M5_DATA_LANES) {
                dev_err(s5k3m5->dev, "Invalid number of data lanes: %u\n",
                        bus_cfg.bus.mipi_csi2.num_data_lanes);
                ret = -EINVAL;
                goto endpoint_free;
        }

        ret = v4l2_link_freq_to_bitmap(s5k3m5->dev, bus_cfg.link_frequencies,
                                       bus_cfg.nr_of_link_frequencies,
                                       s5k3m5_link_freq_menu,
                                       ARRAY_SIZE(s5k3m5_link_freq_menu),
                                       &freq_bitmap);

endpoint_free:
        v4l2_fwnode_endpoint_free(&bus_cfg);

        return ret;
}

static int s5k3m5_power_on(struct device *dev)
{
        struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);
        int ret;

        ret = regulator_bulk_enable(S5K3M5_NUM_SUPPLIES, s5k3m5->supplies);
        if (ret)
                return ret;

        ret = clk_prepare_enable(s5k3m5->mclk);
        if (ret)
                goto disable_regulators;

        gpiod_set_value_cansleep(s5k3m5->reset_gpio, 0);
        usleep_range(10 * USEC_PER_MSEC, 15 * USEC_PER_MSEC);

        return 0;

disable_regulators:
        regulator_bulk_disable(S5K3M5_NUM_SUPPLIES, s5k3m5->supplies);

        return ret;
}

static int s5k3m5_power_off(struct device *dev)
{
        struct v4l2_subdev *sd = dev_get_drvdata(dev);
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);

        gpiod_set_value_cansleep(s5k3m5->reset_gpio, 1);

        clk_disable_unprepare(s5k3m5->mclk);

        regulator_bulk_disable(S5K3M5_NUM_SUPPLIES, s5k3m5->supplies);

        return 0;
}

static int s5k3m5_probe(struct i2c_client *client)
{
        struct s5k3m5 *s5k3m5;
        unsigned long freq;
        unsigned int i;
        int ret;

        s5k3m5 = devm_kzalloc(&client->dev, sizeof(*s5k3m5), GFP_KERNEL);
        if (!s5k3m5)
                return -ENOMEM;

        s5k3m5->dev = &client->dev;
        v4l2_i2c_subdev_init(&s5k3m5->sd, client, &s5k3m5_subdev_ops);

        s5k3m5->regmap = devm_cci_regmap_init_i2c(client, 16);
        if (IS_ERR(s5k3m5->regmap))
                return dev_err_probe(s5k3m5->dev, PTR_ERR(s5k3m5->regmap),
                                     "failed to init CCI\n");

        s5k3m5->mclk = devm_v4l2_sensor_clk_get(s5k3m5->dev, NULL);
        if (IS_ERR(s5k3m5->mclk))
                return dev_err_probe(s5k3m5->dev, PTR_ERR(s5k3m5->mclk),
                                     "failed to get MCLK clock\n");

        freq = clk_get_rate(s5k3m5->mclk);
        if (freq != S5K3M5_MCLK_FREQ_24MHZ)
                return dev_err_probe(s5k3m5->dev, -EINVAL,
                                     "MCLK clock frequency %lu is not supported\n",
                                     freq);

        ret = s5k3m5_check_hwcfg(s5k3m5);
        if (ret)
                return dev_err_probe(s5k3m5->dev, ret,
                                     "failed to check HW configuration\n");

        s5k3m5->reset_gpio = devm_gpiod_get_optional(s5k3m5->dev, "reset",
                                                     GPIOD_OUT_HIGH);
        if (IS_ERR(s5k3m5->reset_gpio))
                return dev_err_probe(s5k3m5->dev, PTR_ERR(s5k3m5->reset_gpio),
                                     "cannot get reset GPIO\n");

        for (i = 0; i < S5K3M5_NUM_SUPPLIES; i++)
                s5k3m5->supplies[i].supply = s5k3m5_supply_names[i];

        ret = devm_regulator_bulk_get(s5k3m5->dev, S5K3M5_NUM_SUPPLIES,
                                      s5k3m5->supplies);
        if (ret)
                return dev_err_probe(s5k3m5->dev, ret,
                                     "failed to get supply regulators\n");

        /* The sensor must be powered on to read the CHIP_ID register */
        ret = s5k3m5_power_on(s5k3m5->dev);
        if (ret)
                return ret;

        ret = s5k3m5_identify_sensor(s5k3m5);
        if (ret) {
                dev_err_probe(s5k3m5->dev, ret, "failed to find sensor\n");
                goto power_off;
        }

        s5k3m5->mode = &s5k3m5_supported_modes[0];
        ret = s5k3m5_init_controls(s5k3m5);
        if (ret) {
                dev_err_probe(s5k3m5->dev, ret, "failed to init controls\n");
                goto power_off;
        }

        s5k3m5->sd.state_lock = s5k3m5->ctrl_handler.lock;
        s5k3m5->sd.internal_ops = &s5k3m5_internal_ops;
        s5k3m5->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
        s5k3m5->sd.entity.ops = &s5k3m5_subdev_entity_ops;
        s5k3m5->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
        s5k3m5->pad.flags = MEDIA_PAD_FL_SOURCE;

        ret = media_entity_pads_init(&s5k3m5->sd.entity, 1, &s5k3m5->pad);
        if (ret) {
                dev_err_probe(s5k3m5->dev, ret,
                              "failed to init media entity pads\n");
                goto v4l2_ctrl_handler_free;
        }

        ret = v4l2_subdev_init_finalize(&s5k3m5->sd);
        if (ret < 0) {
                dev_err_probe(s5k3m5->dev, ret,
                              "failed to init media entity pads\n");
                goto media_entity_cleanup;
        }

        pm_runtime_set_active(s5k3m5->dev);
        pm_runtime_enable(s5k3m5->dev);

        ret = v4l2_async_register_subdev_sensor(&s5k3m5->sd);
        if (ret < 0) {
                dev_err_probe(s5k3m5->dev, ret,
                              "failed to register V4L2 subdev\n");
                goto subdev_cleanup;
        }

        pm_runtime_set_autosuspend_delay(s5k3m5->dev, 1000);
        pm_runtime_use_autosuspend(s5k3m5->dev);
        pm_runtime_idle(s5k3m5->dev);

        return 0;

subdev_cleanup:
        v4l2_subdev_cleanup(&s5k3m5->sd);
        pm_runtime_disable(s5k3m5->dev);
        pm_runtime_set_suspended(s5k3m5->dev);

media_entity_cleanup:
        media_entity_cleanup(&s5k3m5->sd.entity);

v4l2_ctrl_handler_free:
        v4l2_ctrl_handler_free(s5k3m5->sd.ctrl_handler);

power_off:
        s5k3m5_power_off(s5k3m5->dev);

        return ret;
}

static void s5k3m5_remove(struct i2c_client *client)
{
        struct v4l2_subdev *sd = i2c_get_clientdata(client);
        struct s5k3m5 *s5k3m5 = to_s5k3m5(sd);

        v4l2_async_unregister_subdev(sd);
        v4l2_subdev_cleanup(sd);
        media_entity_cleanup(&sd->entity);
        v4l2_ctrl_handler_free(sd->ctrl_handler);
        pm_runtime_disable(s5k3m5->dev);

        if (!pm_runtime_status_suspended(s5k3m5->dev)) {
                s5k3m5_power_off(s5k3m5->dev);
                pm_runtime_set_suspended(s5k3m5->dev);
        }
}

static const struct dev_pm_ops s5k3m5_pm_ops = {
        SET_RUNTIME_PM_OPS(s5k3m5_power_off, s5k3m5_power_on, NULL)
};

static const struct of_device_id s5k3m5_of_match[] = {
        { .compatible = "samsung,s5k3m5" },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, s5k3m5_of_match);

static struct i2c_driver s5k3m5_i2c_driver = {
        .driver = {
                .name = "s5k3m5",
                .pm = &s5k3m5_pm_ops,
                .of_match_table = s5k3m5_of_match,
        },
        .probe = s5k3m5_probe,
        .remove = s5k3m5_remove,
};

module_i2c_driver(s5k3m5_i2c_driver);

MODULE_AUTHOR("Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>");
MODULE_DESCRIPTION("Samsung S5K3M5 image sensor driver");
MODULE_LICENSE("GPL");