sensor_driver/sc2210.c

// SPDX-License-Identifier: GPL-2.0
/*
 * sc2210 driver
 *
 * Copyright (C) 2022 Rockchip Electronics Co., Ltd.
 *
 * V0.0X01.0X01 first version
 * 20240810 : 根据SC2210数据手册修改了增益设置函数
 */

//#define DEBUG
#include <linux/clk.h>
#include <linux/device.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/sysfs.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <linux/rk-camera-module.h>
#include <linux/rk-preisp.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include <linux/pinctrl/consumer.h>
#include "../platform/rockchip/isp/rkisp_tb_helper.h"

#define DRIVER_VERSION			KERNEL_VERSION(0, 0x01, 0x01)

#ifndef V4L2_CID_DIGITAL_GAIN
#define V4L2_CID_DIGITAL_GAIN		V4L2_CID_GAIN
#endif

#define sc2210_LANES			(2LL)   
#define sc2210_BITS_PER_SAMPLE		(10LL)
//#define sc2210_LINK_FREQ_405		432000000LL  
//186000000
//202500000LL
//#define sc2210_LINK_FREQ_405		(200000000LL) 
// 798M : can not get any video
// 250M : 
#define sc2210_LINK_FREQ_405		(200000000LL) 

#define PIXEL_RATE_WITH_405M_10BIT	(sc2210_LINK_FREQ_405 * 2LL * sc2210_LANES / sc2210_BITS_PER_SAMPLE)

#define CHIP_ID				0x2210
#define sc2210_REG_CHIP_ID		0x3107

#define sc2210_REG_CTRL_MODE		0x0100
#define sc2210_MODE_SW_STANDBY		0x0
#define sc2210_MODE_STREAMING		BIT(0)

#define sc2210_REG_EXPOSURE_H		0x3e00
#define sc2210_REG_EXPOSURE_M		0x3e01
#define sc2210_REG_EXPOSURE_L		0x3e02
//1
#define	sc2210_EXPOSURE_MIN		1
#define	sc2210_EXPOSURE_STEP		1
#define sc2210_VTS_MAX			0x7fff

#define sc2210_REG_DIG_GAIN		0x3e06
#define sc2210_REG_DIG_FINE_GAIN	0x3e07
#define sc2210_REG_ANA_GAIN		0x3e08
#define sc2210_REG_ANA_FINE_GAIN   0x3e09

//agian  0x3F 0x7F  54.07
//dgain  0x0F  0xFC  31.5 
#define sc2210_GAIN_MIN			(1000) //1x*1000
#define sc2210_GAIN_MAX			(1703205)	// 54.07*31.5 *1000
#define sc2210_GAIN_STEP		1
#define sc2210_GAIN_DEFAULT		(32000) // 32x*1000


//#define sc2210_REG_GROUP_HOLD		0x3812
//#define sc2210_GROUP_HOLD_START		0x00
//#define sc2210_GROUP_HOLD_END		0x30

#define sc2210_REG_TEST_PATTERN		0x4501
#define sc2210_TEST_PATTERN_BIT_MASK	BIT(3)

#define sc2210_REG_VTS_H		0x320e
#define sc2210_REG_VTS_L		0x320f

#define sc2210_FLIP_MIRROR_REG		0x3221

#define sc2210_FETCH_EXP_H(VAL)		(((VAL) >> 12) & 0xF)
#define sc2210_FETCH_EXP_M(VAL)		(((VAL) >> 4) & 0xFF)
#define sc2210_FETCH_EXP_L(VAL)		(((VAL) & 0xF) << 4)

#define sc2210_FETCH_AGAIN_H(VAL)	(((VAL) >> 8) & 0x03)
#define sc2210_FETCH_AGAIN_L(VAL)	((VAL) & 0xFF)

#define sc2210_FETCH_MIRROR(VAL, ENABLE)	(ENABLE ? VAL | 0x06 : VAL & 0xf9)
#define sc2210_FETCH_FLIP(VAL, ENABLE)		(ENABLE ? VAL | 0x60 : VAL & 0x9f)

#define REG_DELAY			0xFFFE
#define REG_NULL			0xFFFF

#define sc2210_REG_VALUE_08BIT		1
#define sc2210_REG_VALUE_16BIT		2
#define sc2210_REG_VALUE_24BIT		3

#define OF_CAMERA_PINCTRL_STATE_DEFAULT	"rockchip,camera_default"
#define OF_CAMERA_PINCTRL_STATE_SLEEP	"rockchip,camera_sleep"
#define sc2210_NAME			"sc2210"

static const char * const sc2210_supply_names[] = {
	"avdd",		/* Analog power */
	"dovdd",	/* Digital I/O power */
	"dvdd",		/* Digital core power */
};

#define sc2210_NUM_SUPPLIES ARRAY_SIZE(sc2210_supply_names)

struct regval {
	u16 addr;
	u8 val;
};

struct sc2210_mode {
	u32 bus_fmt;
	u32 width;
	u32 height;
	struct v4l2_fract max_fps;
	u32 hts_def;
	u32 vts_def;
	u32 exp_def;
	const struct regval *reg_list;
	u32 hdr_mode;
	u32 xvclk_freq;
	u32 link_freq_idx;
	u32 vc[PAD_MAX];
};

struct sc2210 {
	struct i2c_client	*client;
	struct clk		*xvclk;
	struct gpio_desc	*reset_gpio;
	struct regulator_bulk_data supplies[sc2210_NUM_SUPPLIES];

	struct pinctrl		*pinctrl;
	struct pinctrl_state	*pins_default;
	struct pinctrl_state	*pins_sleep;

	struct v4l2_subdev	subdev;
	struct media_pad	pad;
	struct v4l2_ctrl_handler ctrl_handler;
	struct v4l2_ctrl	*exposure;
	struct v4l2_ctrl	*anal_gain;
	struct v4l2_ctrl	*digi_gain;
	struct v4l2_ctrl	*hblank;
	struct v4l2_ctrl	*vblank;
	struct v4l2_ctrl	*pixel_rate;
	struct v4l2_ctrl	*link_freq;
	struct v4l2_ctrl	*test_pattern;
	struct mutex		mutex;
	bool			streaming;
	bool			power_on;
	const struct sc2210_mode *cur_mode;
	u32			module_index;
	const char		*module_facing;
	const char		*module_name;
	const char		*len_name;
	u32			cur_vts;
	bool			has_init_exp;
	bool			is_thunderboot;
	bool			is_first_streamoff;
	struct preisp_hdrae_exp_s init_hdrae_exp;
};

#define to_sc2210(sd) container_of(sd, struct sc2210, subdev)

/*
 * Xclk 24Mhz
 */
static const struct regval sc2210_global_regs[] = {
	{REG_NULL, 0x00},
};

/*

1080p_25p
 */
static const struct regval sc2210_linear_10_1920x1080_30fps_regs[] = {
{0x0100,0x00},
{0x0100,0x00},
{0x0100,0x00},
{0x0103,0x01}, //reset
{0x0100,0x00},
{0x0100,0x00},
{0x0100,0x00},
{0x0100,0x00},
{0x0100,0x00},
{0x36e9,0x80},
{0x36f9,0x80},
{0x3001,0x07},
{0x3002,0xc0},
{0x300a,0x2c},
{0x300f,0x00},
{0x3018,0x33},
{0x3019,0x0c},
{0x301f,0x47},
{0x3031,0x0a},
{0x3033,0x20},
{0x3038,0x22},
{0x3106,0x81},
{0x3201,0x04},
{0x3203,0x04},
{0x3204,0x07},
{0x3205,0x8b},
{0x3206,0x04},
{0x3207,0x43},
{0x320c,0x04}, //0x44c=1100 应该为 1920/2=960?
{0x320d,0x4c},
{0x320e,0x05},//sc2210_REG_VTS_H
{0x320f,0x46},//25fps  sc2210_REG_VTS_L
{0x3211,0x04}, //输出窗口列起始位置
{0x3213,0x04}, //输出窗口行起始位置
{0x3231,0x02},
{0x3253,0x04},
{0x3301,0x0a},
{0x3302,0x10},
{0x3304,0x48},
{0x3305,0x00},
{0x3306,0x68},
{0x3308,0x20},
{0x3309,0x98},
{0x330a,0x00},
{0x330b,0xe8},
{0x330e,0x68},
{0x3314,0x92},
{0x3000,0xc0},
{0x331e,0x41},
{0x331f,0x91},
{0x334c,0x10},
{0x335d,0x60},
{0x335e,0x02},
{0x335f,0x06},
{0x3364,0x16},
{0x3366,0x92},
{0x3367,0x10},
{0x3368,0x04},
{0x3369,0x00},
{0x336a,0x00},
{0x336b,0x00},
{0x336d,0x03},
{0x337c,0x08},
{0x337d,0x0e},
{0x337f,0x33},
{0x3390,0x10},
{0x3391,0x30},
{0x3392,0x40},
{0x3393,0x0a},
{0x3394,0x0a},
{0x3395,0x0a},
{0x3396,0x08},
{0x3397,0x30},
{0x3398,0x3f},
{0x3399,0x50},
{0x339a,0x50},
{0x339b,0x50},
{0x339c,0x50},
{0x33a2,0x0a},
{0x33b9,0x0e},
{0x33e1,0x08},
{0x33e2,0x18},
{0x33e3,0x18},
{0x33e4,0x18},
{0x33e5,0x10},
{0x33e6,0x06},
{0x33e7,0x02},
{0x33e8,0x18},
{0x33e9,0x10},
{0x33ea,0x0c},
{0x33eb,0x10},
{0x33ec,0x04},
{0x33ed,0x02},
{0x33ee,0xa0},
{0x33ef,0x08},
{0x33f4,0x18},
{0x33f5,0x10},
{0x33f6,0x0c},
{0x33f7,0x10},
{0x33f8,0x06},
{0x33f9,0x02},
{0x33fa,0x18},
{0x33fb,0x10},
{0x33fc,0x0c},
{0x33fd,0x10},
{0x33fe,0x04},
{0x33ff,0x02},
{0x360f,0x01},
{0x3622,0xf7},
{0x3625,0x0a},
{0x3627,0x02},
{0x3630,0xa2},
{0x3631,0x00},
{0x3632,0xd8},
{0x3633,0x33},
{0x3635,0x20},
{0x3638,0x24},
{0x363a,0x80},
{0x363b,0x02},
{0x363e,0x22},
{0x3670,0x40},
{0x3671,0xf7},
{0x3672,0xf7},
{0x3673,0x07},
{0x367a,0x40},
{0x367b,0x7f},
{0x36b5,0x40},
{0x36b6,0x7f},
{0x36c0,0x80},
{0x36c1,0x9f},
{0x36c2,0x9f},
{0x36cc,0x22},
{0x36cd,0x23},
{0x36ce,0x30},
{0x36d0,0x20},
{0x36d1,0x40},
{0x36d2,0x7f},
{0x36ea,0x75},
{0x36eb,0x0d},
{0x36ec,0x13},
{0x36ed,0x24},
{0x36fa,0x5f},
{0x36fb,0x1b},
{0x36fc,0x10},
{0x36fd,0x07},
{0x3905,0xd8},
{0x3907,0x01},
{0x3908,0x11},
{0x391b,0x83},
{0x391d,0x2c},
{0x391f,0x00},
{0x3933,0x28},
{0x3934,0xa6},
{0x3940,0x70},
{0x3942,0x08},
{0x3943,0xbc},
{0x3958,0x02},
{0x3959,0x04},
{0x3980,0x61},
{0x3987,0x0b},
{0x3990,0x00},
{0x3991,0x00},
{0x3992,0x00},
{0x3993,0x00},
{0x3994,0x00},
{0x3995,0x00},
{0x3996,0x00},
{0x3997,0x00},
{0x3998,0x00},
{0x3999,0x00},
{0x399a,0x00},
{0x399b,0x00},
{0x399c,0x00},
{0x399d,0x00},
{0x399e,0x00},
{0x399f,0x00},
{0x39a0,0x00},
{0x39a1,0x00},
{0x39a2,0x03},
{0x39a3,0x30},
{0x39a4,0x03},
{0x39a5,0x60},
{0x39a6,0x03},
{0x39a7,0xa0},
{0x39a8,0x03},
{0x39a9,0xb0},
{0x39aa,0x00},
{0x39ab,0x00},
{0x39ac,0x00},
{0x39ad,0x20},
{0x39ae,0x00},
{0x39af,0x40},
{0x39b0,0x00},
{0x39b1,0x60},
{0x39b2,0x00},
{0x39b3,0x00},
{0x39b4,0x08},
{0x39b5,0x14},
{0x39b6,0x20},
{0x39b7,0x38},
{0x39b8,0x38},
{0x39b9,0x20},
{0x39ba,0x14},
{0x39bb,0x08},
{0x39bc,0x08},
{0x39bd,0x10},
{0x39be,0x20},
{0x39bf,0x30},
{0x39c0,0x30},
{0x39c1,0x20},
{0x39c2,0x10},
{0x39c3,0x08},
{0x39c4,0x00},
{0x39c5,0x80},
{0x39c6,0x00},
{0x39c7,0x80},
{0x39c8,0x00},
{0x39c9,0x00},
{0x39ca,0x80},
{0x39cb,0x00},
{0x39cc,0x00},
{0x39cd,0x00},
{0x39ce,0x00},
{0x39cf,0x00},
{0x39d0,0x00},
{0x39d1,0x00},
{0x39e2,0x05},
{0x39e3,0xeb},
{0x39e4,0x07},
{0x39e5,0xb6},
{0x39e6,0x00},
{0x39e7,0x3a},
{0x39e8,0x3f},
{0x39e9,0xb7},
{0x39ea,0x02},
{0x39eb,0x4f},
{0x39ec,0x08},
{0x39ed,0x00},
{0x3e01,0x05},
{0x3e02,0x43},
{0x3e09,0x40},
{0x3e14,0x31},
{0x3e1b,0x3a},
{0x3e26,0x40},
{0x4401,0x1a},
{0x4407,0xc0},
{0x4418,0x34},
{0x4500,0x18},
{0x4501,0xb4},  //test patten 0xb4
{0x4509,0x20},
{0x4603,0x00},
{0x4800,0x24},
{0x4837,0x2b},
{0x5000,0x0e},
{0x550f,0x20},
{0x36e9,0x51},
{0x36f9,0x53},
//{0x0100,0x01},
{REG_NULL, 0x00},
};


static const struct sc2210_mode supported_modes[] = {
	{
		.width = 1920,
		.height = 1080,
		.max_fps = {
			.numerator = 1,
			.denominator = 25,
		},
		.exp_def = 0x80,  //0x080
		.hts_def = (1100),
		.vts_def = (0x546), //0x546
		.bus_fmt = MEDIA_BUS_FMT_SBGGR10_1X10,  //MEDIA_BUS_FMT_SBGGR10_1X10
	//	.bus_fmt = MEDIA_BUS_FMT_Y10_1X10,
		.reg_list = sc2210_linear_10_1920x1080_30fps_regs,
		.hdr_mode = NO_HDR,
		.xvclk_freq = 27000000,
		.link_freq_idx = 0,
		.vc[PAD0] = V4L2_MBUS_CSI2_CHANNEL_0,
	},
};

static const s64 link_freq_menu_items[] = {
	sc2210_LINK_FREQ_405,
};

static const char * const sc2210_test_pattern_menu[] = {
	"Disabled",
	"Vertical Color Bar Type 2",
	"Vertical Color Bar Type 3",
	"Vertical Color Bar Type 4",
};

/* Write registers up to 4 at a time */
static int sc2210_write_reg(struct i2c_client *client, u16 reg,
			    u32 len, u32 val)
{
	u32 buf_i, val_i;
	u8 buf[6];
	u8 *val_p;
	__be32 val_be;

	if (len > 4)
		return -EINVAL;
		
	udelay(10*1000); //debug add


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

	val_be = cpu_to_be32(val);
	val_p = (u8 *)&val_be;
	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)
	{
		printk("isc2210_write_reg i2c_master_send error addr=0x%X val=0x%X len=%d \n",reg,val,len);
		return -EIO;
	}
	
	printk("sc2210_write_reg! addr=0x%X val=0x%X len=%d \n",reg,val,len);

	return 0;
}

static int isc2210_write_reg(struct i2c_client *client, u16 reg,
			    u32 len, u32 val)
{
	u32 buf_i, val_i;
	u8 buf[6];
	u8 *val_p;
	__be32 val_be;

	if (len > 4)
		return -EINVAL;
		
	udelay(10*1000); //debug add


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

	val_be = cpu_to_be32(val);
	val_p = (u8 *)&val_be;
	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)
	{
		printk("isc2210_write_reg i2c_master_send error addr=0x%X val=0x%X len=%d \n",reg,val,len);
		return -EIO;
	}
	
//	printk("sc2210_write_reg! addr=0x%X val=0x%X len=%d \n",reg,val,len);

	return 0;
}


static int sc2210_write_array(struct i2c_client *client,
			       const struct regval *regs)
{
	u32 i,j;
	int ret = 0;

	for(j=0;j<10;j++)
	{
		for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
			ret = isc2210_write_reg(client, regs[i].addr,
					sc2210_REG_VALUE_08BIT, regs[i].val);

		printk("sc2210_write_array! i=%d \n",i);
		if(i==257)
			break;
	}

	return ret;
}

/* Read registers up to 4 at a time */
static int sc2210_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
			    u32 *val)
{
	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 || !len)
		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;
}
#if 1
//static int sc4238_get_gain_reg(struct sc4238 *sc4238, u32 total_gain,
//			       u32 *again_coarse_reg, u32 *again_fine_reg,
//			       u32 *dgain_coarse_reg, u32 *dgain_fine_reg)
static int sc2210_set_gain_reg(struct sc2210 *sc2210, u32 gain)				   
{
	u32 again_coarse_reg, u32 again_fine_reg;
	u32 dgain_coarse_reg, u32 dgain_fine_reg;
	float fgain,again, dgain;


	//agian  0x3F 0x7F  54.07
	//dgain  0x0F  0xFC  31.5 
//	if (total_gain > 32004) {
//		dev_err(&sc4238->client->dev,
//			"total_gain max is 15.875*31.5*64, current total_gain is %d\n",
	//		total_gain);
//		return -EINVAL;
//	}
	fgain = (float)gain/1000.0;


	if (fgain > 54.07) {
		again = 54.07;
		dgain = fgain /54.07;
	} else {
		again = fgain;
		dgain = 1.0;
	}

	//数值比数据手册大一点0.0001，为了解决浮点数不能相等的问题
	if (again < 1.9841) {
		again_fine_reg = 0x40 + (u32)((again-1.0)*(1/64.0));
		again_coarse_reg = 0x03;
	} else if (again < 3.3751) {
		again_fine_reg = 0x40 + (u32)((again-2.0)*(1/32.0));
		again_coarse_reg = 0x07;
	} else if (again < 6.7591) { 
		again_fine_reg = 0x40 + (u32)((again-3.406)*(0.053));
		again_coarse_reg = 0x23;
	} else if (again < 13.5181) {
		again_fine_reg = 0x40 + (u32)((again-6.812)*(0.106));
		again_coarse_reg = 0x27;
	} else if (again < 27.0351) { 
		again_fine_reg = 0x40 + (u32)((again-13.624)*(0.213));
		again_coarse_reg = 0x2F;
	} else if (again < (54.0701)) { 
		again_fine_reg = 0x40 + (u32)((again-27.248)*(0.426));
		again_coarse_reg = 0x3F;
	} 
	

	if (dgain < 1.9691) { 
		dgain_fine_reg = 0x80 + (u32)((dgain-1.0)*(0.125/4/4));
		dgain_coarse_reg = 0x00;
	} else if (dgain < 3.9381) { 
		dgain_fine_reg = 0x80 + (u32)((dgain-2.0)*(0.125/2/4));
		dgain_coarse_reg = 0x01;
	} else if (dgain < 7.8751) { 
		dgain_fine_reg = 0x80 + (u32)((dgain-4.0)*(0.125/4));
		dgain_coarse_reg = 0x03;
	} else if (dgain < 15.7501) { 
		dgain_fine_reg =  0x80 + (u32)((dgain-8.0)*(0.25/4));
		dgain_coarse_reg = 0x07;
	} else if (dgain < 31.5001) { 
		dgain_fine_reg =  0x80 + (u32)((dgain-16.0)*(0.5/4));
		dgain_coarse_reg = 0x0F;
	} 

	dev_dbg(&sc2210->client->dev,
		"total_gain 0x%x again_coarse 0x%x, again_fine 0x%x, dgain_coarse 0x%x, dgain_fine 0x%x\n",
		gain, again_coarse_reg, again_fine_reg, dgain_coarse_reg, dgain_fine_reg);

	printk("sc2210_set_gain_reg total_gain 0x%x again_coarse 0x%x, again_fine 0x%x, dgain_coarse 0x%x, dgain_fine 0x%x\n",
		gain, again_coarse_reg, again_fine_reg, dgain_coarse_reg, dgain_fine_reg);

	ret = sc2210_write_reg(sc2210->client,
				sc2210_REG_DIG_GAIN,
				sc2210_REG_VALUE_08BIT,
				dgain_coarse_reg);
	ret |= sc2210_write_reg(sc2210->client,
				 sc2210_REG_DIG_FINE_GAIN,
				 sc2210_REG_VALUE_08BIT,
				 dgain_fine_reg);
	ret |= sc2210_write_reg(sc2210->client,
				 sc2210_REG_ANA_GAIN,
				 sc2210_REG_VALUE_08BIT,
				 again_coarse_reg);
	ret |= sc2210_write_reg(sc2210->client,
				 sc2210_REG_ANA_FINE_GAIN,
				 sc2210_REG_VALUE_08BIT,
				 again_fine_reg);

	return ret;
}

#else

static int sc2210_set_gain_reg(struct sc2210 *sc2210, u32 gain)
{
	u32 coarse_again = 0, coarse_dgain = 0, fine_dgain = 0;
	u32 gain_factor;
	int ret = 0;

//	return ret; //debug ws

	gain_factor = gain * 1000 / 32;
	if (gain_factor < 1000) {
		coarse_again = 0x00;
		coarse_dgain = 0x00;
		fine_dgain = 0x80;
	} else if (gain_factor < 1000 * 2) {			/*1x ~ 2x gain*/
		coarse_again = 0x00;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000;
	} else if (gain_factor < 1000 * 4) {			/*2x ~ 4x gain*/
		coarse_again = 0x01;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000 / 2;
	} else if (gain_factor < 1000 * 8) {			/*4x ~ 8x gain*/
		coarse_again = 0x03;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000 / 4;
	} else if (gain_factor < 1000 * 16) {			/*8x ~ 16x gain*/
		coarse_again = 0x07;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000 / 8;
	} else if (gain_factor < 1000 * 32) {			/*16x ~ 32x gain*/
		coarse_again = 0x0f;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000 / 16;
	//open dgain begin  max digital gain 4X
	} else if (gain_factor < 1000 * 64) {			/*32x ~ 64x gain*/
		coarse_again = 0x1f;
		coarse_dgain = 0x00;
		fine_dgain = gain_factor * 128 / 1000 / 32;
	} else if (gain_factor < 1000 * 128) {			/*64x ~ 128x gain*/
		coarse_again = 0x1f;
		coarse_dgain = 0x01;
		fine_dgain = gain_factor * 128 / 1000 / 64;
	} else {						/*max 128x gain*/
		coarse_again = 0x1f;
		coarse_dgain = 0x03;
		fine_dgain = 0x80;
	}
	dev_dbg(&sc2210->client->dev,
		"total_gain: 0x%x, d_gain: 0x%x, d_fine_gain: 0x%x, c_gain: 0x%x\n",
		gain, coarse_dgain, fine_dgain, coarse_again);
		
	printk("sc2210_set_gain_reg total_gain: 0x%x, d_gain: 0x%x, d_fine_gain: 0x%x, c_gain: 0x%x\n",
		gain, coarse_dgain, fine_dgain, coarse_again);

	ret = sc2210_write_reg(sc2210->client,
				sc2210_REG_DIG_GAIN,
				sc2210_REG_VALUE_08BIT,
				coarse_dgain);
	ret |= sc2210_write_reg(sc2210->client,
				 sc2210_REG_DIG_FINE_GAIN,
				 sc2210_REG_VALUE_08BIT,
				 fine_dgain);
	ret |= sc2210_write_reg(sc2210->client,
				 sc2210_REG_ANA_GAIN,
				 sc2210_REG_VALUE_08BIT,
				 coarse_again);

	return ret;
}
#endif
static int sc2210_get_reso_dist(const struct sc2210_mode *mode,
				 struct v4l2_mbus_framefmt *framefmt)
{
	return abs(mode->width - framefmt->width) +
	       abs(mode->height - framefmt->height);
}

static const struct sc2210_mode *
sc2210_find_best_fit(struct v4l2_subdev_format *fmt)
{
	struct v4l2_mbus_framefmt *framefmt = &fmt->format;
	int dist;
	int cur_best_fit = 0;
	int cur_best_fit_dist = -1;
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
		dist = sc2210_get_reso_dist(&supported_modes[i], framefmt);
		if (cur_best_fit_dist == -1 || dist < cur_best_fit_dist) {
			cur_best_fit_dist = dist;
			cur_best_fit = i;
		}
	}

	return &supported_modes[cur_best_fit];
}

static int sc2210_set_fmt(struct v4l2_subdev *sd,
			   struct v4l2_subdev_pad_config *cfg,
			   struct v4l2_subdev_format *fmt)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	const struct sc2210_mode *mode;
	struct device *dev = &sc2210->client->dev;
	s64 h_blank, vblank_def;
	u64 dst_link_freq = 0;
	u64 dst_pixel_rate = 0;

	dev_info(dev,"enter sc2210_set_fmt\n");

	mutex_lock(&sc2210->mutex);

	mode = sc2210_find_best_fit(fmt);
	fmt->format.code = mode->bus_fmt;
	fmt->format.width = mode->width;
	fmt->format.height = mode->height;
	fmt->format.field = V4L2_FIELD_NONE;


	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
		dev_info(dev,"enter v4l2_subdev_get_try_format\n");
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
		*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
#else
		mutex_unlock(&sc2210->mutex);
		return -ENOTTY;
#endif
	} else {
		sc2210->cur_mode = mode;
		h_blank = mode->hts_def - mode->width;
		
		__v4l2_ctrl_modify_range(sc2210->hblank, h_blank,
					 h_blank, 1, h_blank);
		vblank_def = mode->vts_def - mode->height;
		__v4l2_ctrl_modify_range(sc2210->vblank, vblank_def,
					 sc2210_VTS_MAX - mode->height,
					 1, vblank_def);
		dst_link_freq = mode->link_freq_idx;
		dst_pixel_rate = (u32)link_freq_menu_items[mode->link_freq_idx] /
						 sc2210_BITS_PER_SAMPLE * 2 * sc2210_LANES;
		__v4l2_ctrl_s_ctrl_int64(sc2210->pixel_rate,
					 dst_pixel_rate);
		__v4l2_ctrl_s_ctrl(sc2210->link_freq,
				   dst_link_freq);
		dev_info(dev,"h_blank=%lld vblank_def=%lld dst_link_freq=%lld dst_pixel_rate=%lld\n",h_blank,vblank_def,dst_link_freq,dst_pixel_rate);
	}

	mutex_unlock(&sc2210->mutex);

	return 0;
}

static int sc2210_get_fmt(struct v4l2_subdev *sd,
			   struct v4l2_subdev_pad_config *cfg,
			   struct v4l2_subdev_format *fmt)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	const struct sc2210_mode *mode = sc2210->cur_mode;

	mutex_lock(&sc2210->mutex);
	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
		fmt->format = *v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
#else
		mutex_unlock(&sc2210->mutex);
		return -ENOTTY;
#endif
	} else {
		fmt->format.width = mode->width;
		fmt->format.height = mode->height;
		fmt->format.code = mode->bus_fmt;
		fmt->format.field = V4L2_FIELD_NONE;
		/* format info: width/height/data type/virctual channel */
		if (fmt->pad < PAD_MAX && mode->hdr_mode != NO_HDR)
			fmt->reserved[0] = mode->vc[fmt->pad];
		else
			fmt->reserved[0] = mode->vc[PAD0];
	}
	mutex_unlock(&sc2210->mutex);

	return 0;
}

static int sc2210_enum_mbus_code(struct v4l2_subdev *sd,
				  struct v4l2_subdev_pad_config *cfg,
				  struct v4l2_subdev_mbus_code_enum *code)
{
	struct sc2210 *sc2210 = to_sc2210(sd);

	if (code->index != 0)
		return -EINVAL;
	code->code = sc2210->cur_mode->bus_fmt;

	return 0;
}

static int sc2210_enum_frame_sizes(struct v4l2_subdev *sd,
				    struct v4l2_subdev_pad_config *cfg,
				    struct v4l2_subdev_frame_size_enum *fse)
{
	if (fse->index >= ARRAY_SIZE(supported_modes))
		return -EINVAL;

	if (fse->code != supported_modes[0].bus_fmt)
		return -EINVAL;

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

	return 0;
}

static int sc2210_enable_test_pattern(struct sc2210 *sc2210, u32 pattern)
{
	u32 val = 0;
	int ret = 0;

	ret = sc2210_read_reg(sc2210->client, sc2210_REG_TEST_PATTERN,
			       sc2210_REG_VALUE_08BIT, &val);
	if (pattern)
		val |= sc2210_TEST_PATTERN_BIT_MASK;
	else
		val &= ~sc2210_TEST_PATTERN_BIT_MASK;

	ret |= sc2210_write_reg(sc2210->client, sc2210_REG_TEST_PATTERN,
				 sc2210_REG_VALUE_08BIT, val);
	return ret;
}

static int sc2210_g_frame_interval(struct v4l2_subdev *sd,
				    struct v4l2_subdev_frame_interval *fi)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	const struct sc2210_mode *mode = sc2210->cur_mode;

	fi->interval = mode->max_fps;

	return 0;
}

static int sc2210_g_mbus_config(struct v4l2_subdev *sd,
				unsigned int pad_id,
				struct v4l2_mbus_config *config)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	const struct sc2210_mode *mode = sc2210->cur_mode;

	u32 val = (1 << (sc2210_LANES - 1)) |
		V4L2_MBUS_CSI2_CHANNEL_0 |
		V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;  //  V4L2_MBUS_CSI2_CONTINUOUS_CLOCK

//	if (mode->hdr_mode != NO_HDR)
//		val |= V4L2_MBUS_CSI2_CHANNEL_1;
//	if (mode->hdr_mode == HDR_X3)
	//	val |= V4L2_MBUS_CSI2_CHANNEL_2;

	config->type = V4L2_MBUS_CSI2_DPHY;
	config->flags = val;

	printk("sc2210_g_mbus_config val=0x%X hdr_mode=%d\n",val,mode->hdr_mode );

	return 0;
}

static void sc2210_get_module_inf(struct sc2210 *sc2210,
				   struct rkmodule_inf *inf)
{
	memset(inf, 0, sizeof(*inf));
	strscpy(inf->base.sensor, sc2210_NAME, sizeof(inf->base.sensor));
	strscpy(inf->base.module, sc2210->module_name,
		sizeof(inf->base.module));
	strscpy(inf->base.lens, sc2210->len_name, sizeof(inf->base.lens));
}

static long sc2210_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	struct rkmodule_hdr_cfg *hdr;
	u32 i, h, w;
	long ret = 0;
	u32 stream = 0;

	switch (cmd) {
	case RKMODULE_GET_MODULE_INFO:
		sc2210_get_module_inf(sc2210, (struct rkmodule_inf *)arg);
		break;
	case RKMODULE_GET_HDR_CFG:
		hdr = (struct rkmodule_hdr_cfg *)arg;
		hdr->esp.mode = HDR_NORMAL_VC;
		hdr->hdr_mode = sc2210->cur_mode->hdr_mode;
		break;
	case RKMODULE_SET_HDR_CFG:
		hdr = (struct rkmodule_hdr_cfg *)arg;
		w = sc2210->cur_mode->width;
		h = sc2210->cur_mode->height;
		for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
			if (w == supported_modes[i].width &&
			    h == supported_modes[i].height &&
			    supported_modes[i].hdr_mode == hdr->hdr_mode) {
				sc2210->cur_mode = &supported_modes[i];
				break;
			}
		}
		if (i == ARRAY_SIZE(supported_modes)) {
			dev_err(&sc2210->client->dev,
				"not find hdr mode:%d %dx%d config\n",
				hdr->hdr_mode, w, h);
			ret = -EINVAL;
		} else {
			w = sc2210->cur_mode->hts_def - sc2210->cur_mode->width;
			h = sc2210->cur_mode->vts_def - sc2210->cur_mode->height;
			__v4l2_ctrl_modify_range(sc2210->hblank, w, w, 1, w);
			__v4l2_ctrl_modify_range(sc2210->vblank, h,
						 sc2210_VTS_MAX - sc2210->cur_mode->height, 1, h);
		}
		break;
	case PREISP_CMD_SET_HDRAE_EXP:
		break;
	case RKMODULE_SET_QUICK_STREAM:

		stream = *((u32 *)arg);

		if (stream)
			ret = sc2210_write_reg(sc2210->client, sc2210_REG_CTRL_MODE,
				 sc2210_REG_VALUE_08BIT, sc2210_MODE_STREAMING);
		else
			ret = sc2210_write_reg(sc2210->client, sc2210_REG_CTRL_MODE,
				 sc2210_REG_VALUE_08BIT, sc2210_MODE_SW_STANDBY);
		break;
	default:
		ret = -ENOIOCTLCMD;
		break;
	}

	return ret;
}

#ifdef CONFIG_COMPAT
static long sc2210_compat_ioctl32(struct v4l2_subdev *sd,
				   unsigned int cmd, unsigned long arg)
{
	void __user *up = compat_ptr(arg);
	struct rkmodule_inf *inf;
	struct rkmodule_hdr_cfg *hdr;
	struct preisp_hdrae_exp_s *hdrae;
	long ret;
	u32 stream = 0;

	switch (cmd) {
	case RKMODULE_GET_MODULE_INFO:
		inf = kzalloc(sizeof(*inf), GFP_KERNEL);
		if (!inf) {
			ret = -ENOMEM;
			return ret;
		}

		ret = sc2210_ioctl(sd, cmd, inf);
		if (!ret) {
			if (copy_to_user(up, inf, sizeof(*inf)))
				ret = -EFAULT;
		}
		kfree(inf);
		break;
	case RKMODULE_GET_HDR_CFG:
		hdr = kzalloc(sizeof(*hdr), GFP_KERNEL);
		if (!hdr) {
			ret = -ENOMEM;
			return ret;
		}

		ret = sc2210_ioctl(sd, cmd, hdr);
		if (!ret) {
			if (copy_to_user(up, hdr, sizeof(*hdr)))
				ret = -EFAULT;
		}
		kfree(hdr);
		break;
	case RKMODULE_SET_HDR_CFG:
		hdr = kzalloc(sizeof(*hdr), GFP_KERNEL);
		if (!hdr) {
			ret = -ENOMEM;
			return ret;
		}

		ret = copy_from_user(hdr, up, sizeof(*hdr));
		if (!ret)
			ret = sc2210_ioctl(sd, cmd, hdr);
		else
			ret = -EFAULT;
		kfree(hdr);
		break;
	case PREISP_CMD_SET_HDRAE_EXP:
		hdrae = kzalloc(sizeof(*hdrae), GFP_KERNEL);
		if (!hdrae) {
			ret = -ENOMEM;
			return ret;
		}

		ret = copy_from_user(hdrae, up, sizeof(*hdrae));
		if (!ret)
			ret = sc2210_ioctl(sd, cmd, hdrae);
		else
			ret = -EFAULT;
		kfree(hdrae);
		break;
	case RKMODULE_SET_QUICK_STREAM:
		ret = copy_from_user(&stream, up, sizeof(u32));
		if (!ret)
			ret = sc2210_ioctl(sd, cmd, &stream);
		else
			ret = -EFAULT;
		break;
	default:
		ret = -ENOIOCTLCMD;
		break;
	}

	return ret;
}
#endif

static int __sc2210_start_stream(struct sc2210 *sc2210)
{
	int ret;

	if (!sc2210->is_thunderboot) {
		ret = sc2210_write_array(sc2210->client, sc2210->cur_mode->reg_list);
		if (ret)
			return ret;
		/* In case these controls are set before streaming */
		ret = __v4l2_ctrl_handler_setup(&sc2210->ctrl_handler);
		if (ret)
			return ret;
		if (sc2210->has_init_exp && sc2210->cur_mode->hdr_mode != NO_HDR) {
			ret = sc2210_ioctl(&sc2210->subdev, PREISP_CMD_SET_HDRAE_EXP,
				&sc2210->init_hdrae_exp);
			if (ret) {
				dev_err(&sc2210->client->dev,
					"init exp fail in hdr mode\n");
				return ret;
			}
		}
	}
	ret = sc2210_write_reg(sc2210->client, sc2210_REG_CTRL_MODE,
				 sc2210_REG_VALUE_08BIT, sc2210_MODE_STREAMING);
	return ret;
}

static int __sc2210_stop_stream(struct sc2210 *sc2210)
{
	sc2210->has_init_exp = false;
	if (sc2210->is_thunderboot) {
		sc2210->is_first_streamoff = true;
		pm_runtime_put(&sc2210->client->dev);
	}
	return sc2210_write_reg(sc2210->client, sc2210_REG_CTRL_MODE,
				 sc2210_REG_VALUE_08BIT, sc2210_MODE_SW_STANDBY);
}

static int __sc2210_power_on(struct sc2210 *sc2210);
static int sc2210_s_stream(struct v4l2_subdev *sd, int on)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	struct i2c_client *client = sc2210->client;
	int ret = 0;

	mutex_lock(&sc2210->mutex);
	on = !!on;
	if (on == sc2210->streaming)
		goto unlock_and_return;
	if (on) {
		if (sc2210->is_thunderboot && rkisp_tb_get_state() == RKISP_TB_NG) {
			sc2210->is_thunderboot = false;
			__sc2210_power_on(sc2210);
		}
		ret = pm_runtime_get_sync(&client->dev);
		if (ret < 0) {
			pm_runtime_put_noidle(&client->dev);
			goto unlock_and_return;
		}
		ret = __sc2210_start_stream(sc2210);
		if (ret) {
			v4l2_err(sd, "start stream failed while write regs\n");
			pm_runtime_put(&client->dev);
			goto unlock_and_return;
		}
	} else {
		__sc2210_stop_stream(sc2210);
		pm_runtime_put(&client->dev);
	}

	sc2210->streaming = on;
unlock_and_return:
	mutex_unlock(&sc2210->mutex);
	return ret;
}

static int sc2210_s_power(struct v4l2_subdev *sd, int on)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	struct i2c_client *client = sc2210->client;
	int ret = 0;

	mutex_lock(&sc2210->mutex);

	/* If the power state is not modified - no work to do. */
	if (sc2210->power_on == !!on)
		goto unlock_and_return;

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

		if (!sc2210->is_thunderboot) {
			printk("sc2210_write_array sc2210_linear_10_1920x1080_30fps_regs\n");
			ret = sc2210_write_array(sc2210->client, sc2210_linear_10_1920x1080_30fps_regs);
			if (ret) {
				v4l2_err(sd, "could not set init registers\n");
				pm_runtime_put_noidle(&client->dev);
				goto unlock_and_return;
			}
		}

		sc2210->power_on = true;
	} else {
		pm_runtime_put(&client->dev);
		sc2210->power_on = false;
	}

unlock_and_return:
	mutex_unlock(&sc2210->mutex);

	return ret;
}

/* Calculate the delay in us by clock rate and clock cycles */
static inline u32 sc2210_cal_delay(u32 cycles, struct sc2210 *sc2210)
{
	return DIV_ROUND_UP(cycles, sc2210->cur_mode->xvclk_freq / 1000 / 1000);
}

static int __sc2210_power_on(struct sc2210 *sc2210)
{
	int ret;
	u32 delay_us;
	struct device *dev = &sc2210->client->dev;

	if (!IS_ERR_OR_NULL(sc2210->pins_default)) {
		ret = pinctrl_select_state(sc2210->pinctrl,
					   sc2210->pins_default);
		if (ret < 0)
			dev_err(dev, "could not set pins\n");
	}
	ret = clk_set_rate(sc2210->xvclk, sc2210->cur_mode->xvclk_freq);
	if (ret < 0)
		dev_warn(dev, "Failed to set xvclk rate (%dHz)\n", sc2210->cur_mode->xvclk_freq);
	if (clk_get_rate(sc2210->xvclk) != sc2210->cur_mode->xvclk_freq)
		dev_warn(dev, "xvclk mismatched, modes are based on %dHz\n",
			 sc2210->cur_mode->xvclk_freq);
	ret = clk_prepare_enable(sc2210->xvclk);
	if (ret < 0) {
		dev_err(dev, "Failed to enable xvclk\n");
		return ret;
	}

	if (sc2210->is_thunderboot)
		return 0;

	if (!IS_ERR(sc2210->reset_gpio))
		gpiod_set_value_cansleep(sc2210->reset_gpio, 0);

	ret = regulator_bulk_enable(sc2210_NUM_SUPPLIES, sc2210->supplies);
	if (ret < 0) {
		dev_err(dev, "Failed to enable regulators\n");
		goto disable_clk;
	}

	if (!IS_ERR(sc2210->reset_gpio))
		gpiod_set_value_cansleep(sc2210->reset_gpio, 1);

	usleep_range(500, 1000);

	if (!IS_ERR(sc2210->reset_gpio))
		usleep_range(6000, 8000);
	else
		usleep_range(12000, 16000);

	/* 8192 cycles prior to first SCCB transaction */
	delay_us = sc2210_cal_delay(8192, sc2210);
	usleep_range(delay_us, delay_us * 2);

	return 0;

disable_clk:
	clk_disable_unprepare(sc2210->xvclk);

	return ret;
}

static void __sc2210_power_off(struct sc2210 *sc2210)
{
	int ret;
	struct device *dev = &sc2210->client->dev;

	clk_disable_unprepare(sc2210->xvclk);
	if (sc2210->is_thunderboot) {
		if (sc2210->is_first_streamoff) {
			sc2210->is_thunderboot = false;
			sc2210->is_first_streamoff = false;
		} else {
			return;
		}
	}

	if (!IS_ERR(sc2210->reset_gpio))
		gpiod_set_value_cansleep(sc2210->reset_gpio, 0);
	if (!IS_ERR_OR_NULL(sc2210->pins_sleep)) {
		ret = pinctrl_select_state(sc2210->pinctrl,
					   sc2210->pins_sleep);
		if (ret < 0)
			dev_dbg(dev, "could not set pins\n");
	}
	regulator_bulk_disable(sc2210_NUM_SUPPLIES, sc2210->supplies);
}

static int sc2210_runtime_resume(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct sc2210 *sc2210 = to_sc2210(sd);

	return __sc2210_power_on(sc2210);
}

static int sc2210_runtime_suspend(struct device *dev)
{
	struct i2c_client *client = to_i2c_client(dev);
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct sc2210 *sc2210 = to_sc2210(sd);

	__sc2210_power_off(sc2210);

	return 0;
}

#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static int sc2210_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
	struct sc2210 *sc2210 = to_sc2210(sd);
	struct v4l2_mbus_framefmt *try_fmt =
				v4l2_subdev_get_try_format(sd, fh->pad, 0);
	const struct sc2210_mode *def_mode = &supported_modes[0];

	mutex_lock(&sc2210->mutex);
	/* Initialize try_fmt */
	try_fmt->width = def_mode->width;
	try_fmt->height = def_mode->height;
	try_fmt->code = def_mode->bus_fmt;
	try_fmt->field = V4L2_FIELD_NONE;

	mutex_unlock(&sc2210->mutex);
	/* No crop or compose */

	return 0;
}
#endif

static int sc2210_enum_frame_interval(struct v4l2_subdev *sd,
				       struct v4l2_subdev_pad_config *cfg,
				       struct v4l2_subdev_frame_interval_enum *fie)
{
	if (fie->index >= ARRAY_SIZE(supported_modes))
		return -EINVAL;

	fie->code = supported_modes[fie->index].bus_fmt;
	fie->width = supported_modes[fie->index].width;
	fie->height = supported_modes[fie->index].height;
	fie->interval = supported_modes[fie->index].max_fps;
	fie->reserved[0] = supported_modes[fie->index].hdr_mode;
	return 0;
}

static const struct dev_pm_ops sc2210_pm_ops = {
	SET_RUNTIME_PM_OPS(sc2210_runtime_suspend,
			   sc2210_runtime_resume, NULL)
};

#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
static const struct v4l2_subdev_internal_ops sc2210_internal_ops = {
	.open = sc2210_open,
};
#endif

static const struct v4l2_subdev_core_ops sc2210_core_ops = {
	.s_power = sc2210_s_power,
	.ioctl = sc2210_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl32 = sc2210_compat_ioctl32,
#endif
};

static const struct v4l2_subdev_video_ops sc2210_video_ops = {
	.s_stream = sc2210_s_stream,
	.g_frame_interval = sc2210_g_frame_interval,
};

static const struct v4l2_subdev_pad_ops sc2210_pad_ops = {
	.enum_mbus_code = sc2210_enum_mbus_code,
	.enum_frame_size = sc2210_enum_frame_sizes,
	.enum_frame_interval = sc2210_enum_frame_interval,
	.get_fmt = sc2210_get_fmt,
	.set_fmt = sc2210_set_fmt,
	.get_mbus_config = sc2210_g_mbus_config,
};

static const struct v4l2_subdev_ops sc2210_subdev_ops = {
	.core	= &sc2210_core_ops,
	.video	= &sc2210_video_ops,
	.pad	= &sc2210_pad_ops,
};

/// @brief 
/// @param ctrl 
/// @return 
static int sc2210_set_ctrl(struct v4l2_ctrl *ctrl)
{
	struct sc2210 *sc2210 = container_of(ctrl->handler,
					       struct sc2210, ctrl_handler);
	struct i2c_client *client = sc2210->client;
	s64 max;
	int ret = 0;
	u32 val = 0;

	/* Propagate change of current control to all related controls */
	switch (ctrl->id) {
	case V4L2_CID_VBLANK:
		/* Update max exposure while meeting expected vblanking */
		 max = sc2210->cur_mode->height + ctrl->val - 8;
		 __v4l2_ctrl_modify_range(sc2210->exposure,
		 			 sc2210->exposure->minimum, max,
		 			 sc2210->exposure->step,
		 			 sc2210->exposure->default_value);
		break;
	}

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

	switch (ctrl->id) {
	case V4L2_CID_EXPOSURE:
		dev_dbg(&client->dev, "set exposure 0x%x\n", ctrl->val);
		printk("set exposure 0x%x\n", ctrl->val);
		if (sc2210->cur_mode->hdr_mode == NO_HDR) {
	//	if (0) {
			val = ctrl->val;
// 			// /* 4 least significant bits of expsoure are fractional part */
 			ret = sc2210_write_reg(sc2210->client,
						sc2210_REG_EXPOSURE_H,
						sc2210_REG_VALUE_08BIT,
						sc2210_FETCH_EXP_H(val));
			ret |= sc2210_write_reg(sc2210->client,
						 sc2210_REG_EXPOSURE_M,
						 sc2210_REG_VALUE_08BIT,
						 sc2210_FETCH_EXP_M(val));
			ret |= sc2210_write_reg(sc2210->client,
						 sc2210_REG_EXPOSURE_L,
						 sc2210_REG_VALUE_08BIT,
						 sc2210_FETCH_EXP_L(val)); 
		}
		break;
	case V4L2_CID_ANALOGUE_GAIN:
		dev_dbg(&client->dev, "set gain 0x%x\n", ctrl->val);
		 if (sc2210->cur_mode->hdr_mode == NO_HDR)
		 	ret = sc2210_set_gain_reg(sc2210, ctrl->val);
		break;
	case V4L2_CID_VBLANK:
		dev_dbg(&client->dev, "set vblank 0x%x\n", ctrl->val);
		ret = sc2210_write_reg(sc2210->client,
					sc2210_REG_VTS_H,
					sc2210_REG_VALUE_08BIT,
					(ctrl->val + sc2210->cur_mode->height)
					>> 8);
		ret |= sc2210_write_reg(sc2210->client,
					 sc2210_REG_VTS_L,
					 sc2210_REG_VALUE_08BIT,
					 (ctrl->val + sc2210->cur_mode->height)
					 & 0xff);
		sc2210->cur_vts = ctrl->val + sc2210->cur_mode->height;
		break;
	case V4L2_CID_TEST_PATTERN:
		 ret = sc2210_enable_test_pattern(sc2210, ctrl->val);
		break;
	case V4L2_CID_HFLIP:
		ret = sc2210_read_reg(sc2210->client, sc2210_FLIP_MIRROR_REG,
				       sc2210_REG_VALUE_08BIT, &val);
		ret |= sc2210_write_reg(sc2210->client, sc2210_FLIP_MIRROR_REG,
					 sc2210_REG_VALUE_08BIT,
					 sc2210_FETCH_MIRROR(val, ctrl->val));
		break;
	case V4L2_CID_VFLIP:
		ret = sc2210_read_reg(sc2210->client, sc2210_FLIP_MIRROR_REG,
				       sc2210_REG_VALUE_08BIT, &val);
		ret |= sc2210_write_reg(sc2210->client, sc2210_FLIP_MIRROR_REG,
					 sc2210_REG_VALUE_08BIT,
					 sc2210_FETCH_FLIP(val, ctrl->val));
		break;
	default:
		dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
			 __func__, ctrl->id, ctrl->val);
		break;
	}

	pm_runtime_put(&client->dev);

	return ret;
}

static const struct v4l2_ctrl_ops sc2210_ctrl_ops = {
	.s_ctrl = sc2210_set_ctrl
};

static int sc2210_initialize_controls(struct sc2210 *sc2210)
{
	const struct sc2210_mode *mode;
	struct v4l2_ctrl_handler *handler;
	struct device *dev = &sc2210->client->dev;
	s64 exposure_max, vblank_def;
	u32 h_blank;
	int ret;
	u64 dst_link_freq = 0;
	u64 dst_pixel_rate = 0;

	handler = &sc2210->ctrl_handler;
	mode = sc2210->cur_mode;
	ret = v4l2_ctrl_handler_init(handler, 9);
	if (ret)
		return ret;
	handler->lock = &sc2210->mutex;

	sc2210->link_freq = v4l2_ctrl_new_int_menu(handler, NULL,
			V4L2_CID_LINK_FREQ,
			ARRAY_SIZE(link_freq_menu_items) - 1, 0, link_freq_menu_items);
	if (sc2210->link_freq)
		sc2210->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;

	dst_link_freq = mode->link_freq_idx;
	dst_pixel_rate = (u32)link_freq_menu_items[mode->link_freq_idx] /
					 sc2210_BITS_PER_SAMPLE * 2 * sc2210_LANES;
	sc2210->pixel_rate = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE,
			  0, PIXEL_RATE_WITH_405M_10BIT, 1, dst_pixel_rate);

	__v4l2_ctrl_s_ctrl(sc2210->link_freq, dst_link_freq);

	h_blank = mode->hts_def - mode->width;
	sc2210->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
					    h_blank, h_blank, 1, h_blank);
	if (sc2210->hblank)
		sc2210->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
	vblank_def = mode->vts_def - mode->height;
	sc2210->vblank = v4l2_ctrl_new_std(handler, &sc2210_ctrl_ops,
					    V4L2_CID_VBLANK, vblank_def,
					    sc2210_VTS_MAX - mode->height,
					    1, vblank_def);
	exposure_max = mode->vts_def - 8;
	sc2210->exposure = v4l2_ctrl_new_std(handler, &sc2210_ctrl_ops,
					      V4L2_CID_EXPOSURE, sc2210_EXPOSURE_MIN,
					      exposure_max, sc2210_EXPOSURE_STEP,
					      mode->exp_def);
	sc2210->anal_gain = v4l2_ctrl_new_std(handler, &sc2210_ctrl_ops,
					       V4L2_CID_ANALOGUE_GAIN, sc2210_GAIN_MIN,
					       sc2210_GAIN_MAX, sc2210_GAIN_STEP,
					       sc2210_GAIN_DEFAULT);
	sc2210->test_pattern = v4l2_ctrl_new_std_menu_items(handler,
							    &sc2210_ctrl_ops,
					V4L2_CID_TEST_PATTERN,
					ARRAY_SIZE(sc2210_test_pattern_menu) - 1,
					0, 0, sc2210_test_pattern_menu);
	v4l2_ctrl_new_std(handler, &sc2210_ctrl_ops,
				V4L2_CID_HFLIP, 0, 1, 1, 0);
	v4l2_ctrl_new_std(handler, &sc2210_ctrl_ops,
				V4L2_CID_VFLIP, 0, 1, 1, 0);

	


	if (handler->error) {
		ret = handler->error;
		dev_err(&sc2210->client->dev,
			"Failed to init controls(%d)\n", ret);
		goto err_free_handler;
	}

	sc2210->subdev.ctrl_handler = handler;
	sc2210->has_init_exp = false;

	dev_info(dev,"sc2210_initialize_controls \n");

	return 0;

err_free_handler:
	v4l2_ctrl_handler_free(handler);

	return ret;
}

static int sc2210_check_sensor_id(struct sc2210 *sc2210,
				   struct i2c_client *client)
{
	struct device *dev = &sc2210->client->dev;
	u32 id = 0;
	int ret;

	if (sc2210->is_thunderboot) {
		dev_info(dev, "Enable thunderboot mode, skip sensor id check\n");
		return 0;
	}

	ret = sc2210_read_reg(client, sc2210_REG_CHIP_ID,
			       sc2210_REG_VALUE_16BIT, &id);
	if (id != CHIP_ID) {
		dev_err(dev, "Unexpected sensor id(%06x), ret(%d)\n", id, ret);
		return -ENODEV;
	}

	dev_info(dev, "Detected SC%06x sensor\n", CHIP_ID);

	return 0;
}

static int sc2210_configure_regulators(struct sc2210 *sc2210)
{
	unsigned int i;

	for (i = 0; i < sc2210_NUM_SUPPLIES; i++)
		sc2210->supplies[i].supply = sc2210_supply_names[i];

	return devm_regulator_bulk_get(&sc2210->client->dev,
				       sc2210_NUM_SUPPLIES,
				       sc2210->supplies);
}

static int sc2210_probe(struct i2c_client *client,
			 const struct i2c_device_id *id)
{
	struct device *dev = &client->dev;
	struct device_node *node = dev->of_node;
	struct sc2210 *sc2210;
	struct v4l2_subdev *sd;
	char facing[2];
	int ret;
	int i, hdr_mode = 0;

	dev_info(dev, "driver version: %02x.%02x.%02x",
		 DRIVER_VERSION >> 16,
		 (DRIVER_VERSION & 0xff00) >> 8,
		 DRIVER_VERSION & 0x00ff);

	sc2210 = devm_kzalloc(dev, sizeof(*sc2210), GFP_KERNEL);
	if (!sc2210)
		return -ENOMEM;

	ret = of_property_read_u32(node, RKMODULE_CAMERA_MODULE_INDEX,
				   &sc2210->module_index);
	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_FACING,
				       &sc2210->module_facing);
	ret |= of_property_read_string(node, RKMODULE_CAMERA_MODULE_NAME,
				       &sc2210->module_name);
	ret |= of_property_read_string(node, RKMODULE_CAMERA_LENS_NAME,
				       &sc2210->len_name);
	if (ret) {
		dev_err(dev, "could not get module information!\n");
		return -EINVAL;
	}

	sc2210->is_thunderboot = IS_ENABLED(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP);

	sc2210->client = client;
	for (i = 0; i < ARRAY_SIZE(supported_modes); i++) {
		if (hdr_mode == supported_modes[i].hdr_mode) {
			sc2210->cur_mode = &supported_modes[i];
			break;
		}
	}
	if (i == ARRAY_SIZE(supported_modes))
		sc2210->cur_mode = &supported_modes[0];

	sc2210->xvclk = devm_clk_get(dev, "xvclk");
	if (IS_ERR(sc2210->xvclk)) {
		dev_err(dev, "Failed to get xvclk\n");
		return -EINVAL;
	}

	if (sc2210->is_thunderboot) {
		sc2210->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_ASIS);
		if (IS_ERR(sc2210->reset_gpio))
			dev_warn(dev, "Failed to get reset-gpios\n");
	} else {
		sc2210->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
		if (IS_ERR(sc2210->reset_gpio))
			dev_warn(dev, "Failed to get reset-gpios\n");
	}

	sc2210->pinctrl = devm_pinctrl_get(dev);
	if (!IS_ERR(sc2210->pinctrl)) {
		sc2210->pins_default =
			pinctrl_lookup_state(sc2210->pinctrl,
					     OF_CAMERA_PINCTRL_STATE_DEFAULT);
		if (IS_ERR(sc2210->pins_default))
			dev_err(dev, "could not get default pinstate\n");

		sc2210->pins_sleep =
			pinctrl_lookup_state(sc2210->pinctrl,
					     OF_CAMERA_PINCTRL_STATE_SLEEP);
		if (IS_ERR(sc2210->pins_sleep))
			dev_err(dev, "could not get sleep pinstate\n");
	} else {
		dev_err(dev, "no pinctrl\n");
	}

	ret = sc2210_configure_regulators(sc2210);
	if (ret) {
		dev_err(dev, "Failed to get power regulators\n");
		return ret;
	}

	mutex_init(&sc2210->mutex);

	sd = &sc2210->subdev;
	v4l2_i2c_subdev_init(sd, client, &sc2210_subdev_ops);
	ret = sc2210_initialize_controls(sc2210);
	if (ret)
		goto err_destroy_mutex;

	ret = __sc2210_power_on(sc2210);
	if (ret)
		goto err_free_handler;

	ret = sc2210_check_sensor_id(sc2210, client);
	if (ret)
		goto err_power_off;

#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
	sd->internal_ops = &sc2210_internal_ops;
	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
		     V4L2_SUBDEV_FL_HAS_EVENTS;
#endif
#if defined(CONFIG_MEDIA_CONTROLLER)
	sc2210->pad.flags = MEDIA_PAD_FL_SOURCE;
	sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
	ret = media_entity_pads_init(&sd->entity, 1, &sc2210->pad);
	if (ret < 0)
		goto err_power_off;
#endif

	memset(facing, 0, sizeof(facing));
	if (strcmp(sc2210->module_facing, "back") == 0)
		facing[0] = 'b';
	else
		facing[0] = 'f';

	snprintf(sd->name, sizeof(sd->name), "m%02d_%s_%s %s",
		 sc2210->module_index, facing,
		 sc2210_NAME, dev_name(sd->dev));
	ret = v4l2_async_register_subdev_sensor_common(sd);
	if (ret) {
		dev_err(dev, "v4l2 async register subdev failed\n");
		goto err_clean_entity;
	}

	pm_runtime_set_active(dev);
	pm_runtime_enable(dev);
	if (sc2210->is_thunderboot)
		pm_runtime_get_sync(dev);
	else
		pm_runtime_idle(dev);

	return 0;

err_clean_entity:
#if defined(CONFIG_MEDIA_CONTROLLER)
	media_entity_cleanup(&sd->entity);
#endif
err_power_off:
	__sc2210_power_off(sc2210);
err_free_handler:
	v4l2_ctrl_handler_free(&sc2210->ctrl_handler);
err_destroy_mutex:
	mutex_destroy(&sc2210->mutex);

	return ret;
}

static int sc2210_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd = i2c_get_clientdata(client);
	struct sc2210 *sc2210 = to_sc2210(sd);

	v4l2_async_unregister_subdev(sd);
#if defined(CONFIG_MEDIA_CONTROLLER)
	media_entity_cleanup(&sd->entity);
#endif
	v4l2_ctrl_handler_free(&sc2210->ctrl_handler);
	mutex_destroy(&sc2210->mutex);

	pm_runtime_disable(&client->dev);
	if (!pm_runtime_status_suspended(&client->dev))
		__sc2210_power_off(sc2210);
	pm_runtime_set_suspended(&client->dev);

	return 0;
}

#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id sc2210_of_match[] = {
	{ .compatible = "smartsens,sc2210" },
	{},
};
MODULE_DEVICE_TABLE(of, sc2210_of_match);
#endif

static const struct i2c_device_id sc2210_match_id[] = {
	{ "smartsens,sc2210", 0 },
	{ },
};

static struct i2c_driver sc2210_i2c_driver = {
	.driver = {
		.name = sc2210_NAME,
		.pm = &sc2210_pm_ops,
		.of_match_table = of_match_ptr(sc2210_of_match),
	},
	.probe		= &sc2210_probe,
	.remove		= &sc2210_remove,
	.id_table	= sc2210_match_id,
};

static int __init sensor_mod_init(void)
{
	return i2c_add_driver(&sc2210_i2c_driver);
}

static void __exit sensor_mod_exit(void)
{
	i2c_del_driver(&sc2210_i2c_driver);
}

#if defined(CONFIG_VIDEO_ROCKCHIP_THUNDER_BOOT_ISP) && !defined(CONFIG_INITCALL_ASYNC)
subsys_initcall(sensor_mod_init);
#else
device_initcall_sync(sensor_mod_init);
#endif
module_exit(sensor_mod_exit);

MODULE_DESCRIPTION("smartsens sc2210 sensor driver");
MODULE_LICENSE("GPL");