/*
 * A V4L2 driver for IMX214 cameras.
 *
 */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <linux/io.h>
#include "camera.h"
#include "sensor_helper.h"

MODULE_AUTHOR("lwj");
MODULE_DESCRIPTION("A low-level driver for IMX214 sensors");
MODULE_LICENSE("GPL");

/* for internal driver debug */
#define DEV_DBG_EN      0
#if (DEV_DBG_EN == 1)
#define vfe_dev_dbg(x, arg...) pr_debug("[IMX214]"x, ##arg)
#else
#define vfe_dev_dbg(x, arg...)
#endif
#define vfe_dev_err(x, arg...) pr_err("[IMX214]"x, ##arg)
#define vfe_dev_print(x, arg...) pr_info("[IMX214]"x, ##arg)

/*
 *#define LOG_ERR_RET(x) { \
 *			  int ret; \
 *			  ret = x; \
 *			  if (ret < 0) { \
 *			    vfe_dev_err("error at %s\n", __func__); \
 *			    return ret; \
 *			  } \
 *			}
 */

/* define module timing */
#define MCLK              (24*1000*1000)
#define VREF_POL          V4L2_MBUS_VSYNC_ACTIVE_LOW
#define HREF_POL          V4L2_MBUS_HSYNC_ACTIVE_HIGH
#define CLK_POL           V4L2_MBUS_PCLK_SAMPLE_RISING
#define V4L2_IDENT_SENSOR 0x0214

#define DGAIN_R  0x100
#define DGAIN_G  0x100
#define DGAIN_B  0x100

/*
 * Our nominal (default) frame rate.
 */

#define SENSOR_FRAME_RATE 30


/*
 * The IMX214 sits on i2c with ID 0x6c
 */
#define I2C_ADDR 0x20
#define SENSOR_NAME "imx214"
int imx214_sensor_vts;


/* static struct delayed_work sensor_s_ae_ratio_work; */
static struct v4l2_subdev *glb_sd;

/*
 * Information we maintain about a known sensor.
 */
struct sensor_format_struct;  /* coming later */

struct cfg_array { /* coming later */
	struct regval_list *regs;
	int size;
};

static int LOG_ERR_RET(int x)
{
	int ret;

	ret = x;
	if (ret < 0)
		vfe_dev_err("error at %s\n", __func__);
	return ret;
}

static inline struct sensor_info *to_state(struct v4l2_subdev *sd)
{
	return container_of(sd, struct sensor_info, sd);
}

/*
 * The default register settings
 *
 */

static struct regval_list sensor_default_regs[] = {
	{0x0101, 0x03},
	{0x0105, 0x01},
	{0x0106, 0x01},
	{0x4550, 0x02},
	{0x4601, 0x04},
	{0x4642, 0x01},
	{0x6227, 0x11},
	{0x6276, 0x00},
	{0x900E, 0x06},
	{0xA802, 0x90},
	{0xA803, 0x11},
	{0xA804, 0x62},
	{0xA805, 0x77},
	{0xA806, 0xAE},
	{0xA807, 0x34},
	{0xA808, 0xAE},
	{0xA809, 0x35},
	{0xA80A, 0x62},
	{0xA80B, 0x83},
	{0xAE33, 0x00},
	{0x4174, 0x00},
	{0x4175, 0x11},
	{0x4612, 0x29},
	{0x461B, 0x2C},
	{0x461F, 0x06},
	{0x4635, 0x07},
	{0x4637, 0x30},
	{0x463F, 0x18},
	{0x4641, 0x0D},
	{0x465B, 0x2C},
	{0x465F, 0x2B},
	{0x4663, 0x2B},
	{0x4667, 0x24},
	{0x466F, 0x24},
	{0x470E, 0x09},
	{0x4909, 0xAB},
	{0x490B, 0x95},
	{0x4915, 0x5D},
	{0x4A5F, 0xFF},
	{0x4A61, 0xFF},
	{0x4A73, 0x62},
	{0x4A85, 0x00},
	{0x4A87, 0xFF},
	{0x583C, 0x04},
	{0x620E, 0x04},
	{0x6EB2, 0x01},
	{0x6EB3, 0x00},
	{0x9300, 0x02},
	{0x080b, 119},
	{0x080d, 55},
	{0x080f, 103},
	{0x0811, 55},
	{0x0813, 55},
	{0x0815, 55},
	{0x0817, 223},
	{0x0819, 47},
	{0x4601, 0x04},
	{0x4642, 0x01},
	{0x461B, 0x2C},
	{0x465B, 0x2C},
	{0x465F, 0x2B},
	{0x4663, 0x2B},
	{0x4667, 0x24},
	{0x466F, 0x24},
};

/* for capture */
static struct regval_list sensor_13mega_regs[] = {
	{0x0114, 0x03},
	{0x0220, 0x00},
	{0x0221, 0x11},
	{0x0222, 0x01},
	{0x0340, 0x0C},
	{0x0341, 0x7A},
	{0x0342, 0x13},
	{0x0343, 0x90},
	{0x0344, 0x00},
	{0x0345, 0x00},
	{0x0346, 0x00},
	{0x0347, 0x00},
	{0x0348, 0x10},
	{0x0349, 0x6F},
	{0x034A, 0x0C},
	{0x034B, 0x2F},
	{0x0381, 0x01},
	{0x0383, 0x01},
	{0x0385, 0x01},
	{0x0387, 0x01},
	{0x0900, 0x00},
	{0x0901, 0x00},
	{0x0902, 0x00},
	{0x3000, 0x35},
	{0x3054, 0x01},
	{0x305C, 0x11},
	{0x0112, 0x0A},
	{0x0113, 0x0A},
	{0x034C, 0x10},
	{0x034D, 0x70},
	{0x034E, 0x0C},
	{0x034F, 0x30},
	{0x0401, 0x00},
	{0x0404, 0x00},
	{0x0405, 0x10},
	{0x0408, 0x00},
	{0x0409, 0x00},
	{0x040A, 0x00},
	{0x040B, 0x00},
	{0x040C, 0x10},
	{0x040D, 0x70},
	{0x040E, 0x0C},
	{0x040F, 0x30},
	{0x0301, 0x05},
	{0x0303, 0x02},
	{0x0305, 0x03},
	{0x0306, 0x00},
	{0x0307, 0x64},
	{0x0309, 0x0A},
	{0x030B, 0x01},
	{0x0310, 0x00},
	{0x0820, 0x0C},
	{0x0821, 0x80},
	{0x0822, 0x00},
	{0x0823, 0x00},
	{0x3A03, 0x08},
	{0x3A04, 0xD0},
	{0x3A05, 0x02},
	{0x0B06, 0x01},
	{0x30A2, 0x00},
	{0x30B4, 0x00},
	{0x3A02, 0xFF},
	{0x3011, 0x00},
	{0x3013, 0x01},
	{0x0202, 0x0C},
	{0x0203, 0x70},
	{0x0224, 0x01},
	{0x0225, 0xF4},
	{0x0204, 0x00},
	{0x0205, 0x00},
	{0x020E, 0x01},
	{0x020F, 0x00},
	{0x0210, 0x01},
	{0x0211, 0x00},
	{0x0212, 0x01},
	{0x0213, 0x00},
	{0x0214, 0x01},
	{0x0215, 0x00},
	{0x0216, 0x00},
	{0x0217, 0x00},
	{0x4170, 0x00},
	{0x4171, 0x10},
	{0x4176, 0x00},
	{0x4177, 0x3C},
	{0xAE20, 0x04},
	{0xAE21, 0x5C},
	{0x0138, 0x01},
	{0x0100, 0x01},
};

/* for video */
static struct regval_list sensor_4k_videos[] = {

	{0x0114, 0x03},
	{0x0220, 0x00},
	{0x0221, 0x11},
	{0x0222, 0x01},
	{0x0340, 0x09},
	{0x0341, 0x3C},
	{0x0342, 0x13},
	{0x0343, 0x90},
	{0x0344, 0x00},
	{0x0345, 0xB8},
	{0x0346, 0x01},
	{0x0347, 0xE0},
	{0x0348, 0x0F},
	{0x0349, 0xB7},
	{0x034A, 0x0A},
	{0x034B, 0x4F},
	{0x0381, 0x01},
	{0x0383, 0x01},
	{0x0385, 0x01},
	{0x0387, 0x01},
	{0x0900, 0x00},
	{0x0901, 0x00},
	{0x0902, 0x00},
	{0x3000, 0x35},
	{0x3054, 0x01},
	{0x305C, 0x11},
	{0x0112, 0x0A},
	{0x0113, 0x0A},
	{0x034C, 0x0F},
	{0x034D, 0x00},
	{0x034E, 0x08},
	{0x034F, 0x70},
	{0x0401, 0x00},
	{0x0404, 0x00},
	{0x0405, 0x10},
	{0x0408, 0x00},
	{0x0409, 0x00},
	{0x040A, 0x00},
	{0x040B, 0x00},
	{0x040C, 0x0F},
	{0x040D, 0x00},
	{0x040E, 0x08},
	{0x040F, 0x70},
	{0x0301, 0x05},
	{0x0303, 0x02},
	{0x0305, 0x01},
	{0x0306, 0x00},
	{0x0307, 0x25},
	{0x0309, 0x0A},
	{0x030B, 0x01},
	{0x0310, 0x00},
	{0x0820, 0x0D},
	{0x0821, 0xE0},
	{0x0822, 0x00},
	{0x0823, 0x00},
	{0x3A03, 0x09},
	{0x3A04, 0xA0},
	{0x3A05, 0x04},
	{0x0B06, 0x01},
	{0x30A2, 0x00},
	{0x30B4, 0x00},
	{0x3A02, 0xFF},
	{0x3011, 0x00},
	{0x3013, 0x01},
	{0x0202, 0x09},
	{0x0203, 0x32},
	{0x0224, 0x01},
	{0x0225, 0xF4},
	{0x0204, 0x00},
	{0x0205, 0x00},
	{0x020E, 0x01},
	{0x020F, 0x00},
	{0x0210, 0x01},
	{0x0211, 0x00},
	{0x0212, 0x01},
	{0x0213, 0x00},
	{0x0214, 0x01},
	{0x0215, 0x00},
	{0x0216, 0x00},
	{0x0217, 0x00},
	{0x4170, 0x00},
	{0x4171, 0x10},
	{0x4176, 0x00},
	{0x4177, 0x3C},
	{0xAE20, 0x04},
	{0xAE21, 0x5C},
};

static struct regval_list sensor_1080p_regs[] = {
	{0x0114, 0x03},
	{0x0220, 0x00},
	{0x0221, 0x11},
	{0x0222, 0x01},
	{0x0340, 0x08},
	{0x0341, 0x50},
	{0x0342, 0x13},
	{0x0343, 0x90},
	{0x0344, 0x00},
	{0x0345, 0xB8},
	{0x0346, 0x01},
	{0x0347, 0xE0},
	{0x0348, 0x0F},
	{0x0349, 0xB7},
	{0x034A, 0x0A},
	{0x034B, 0x4F},
	{0x0381, 0x01},
	{0x0383, 0x01},
	{0x0385, 0x01},
	{0x0387, 0x01},
	{0x0900, 0x01},
	{0x0901, 0x22},
	{0x0902, 0x02},
	{0x3000, 0x35},
	{0x3054, 0x01},
	{0x305C, 0x11},
	{0x0112, 0x0A},
	{0x0113, 0x0A},
	{0x034C, 0x07},
	{0x034D, 0x80},
	{0x034E, 0x04},
	{0x034F, 0x38},
	{0x0401, 0x00},
	{0x0404, 0x00},
	{0x0405, 0x10},
	{0x0408, 0x00},
	{0x0409, 0x00},
	{0x040A, 0x00},
	{0x040B, 0x00},
	{0x040C, 0x07},
	{0x040D, 0x80},
	{0x040E, 0x04},
	{0x040F, 0x38},
	{0x0301, 0x05},
	{0x0303, 0x02},
	{0x0305, 0x03},
	{0x0306, 0x00},
	{0x0307, 0x64},
	{0x0309, 0x0A},
	{0x030B, 0x01},
	{0x0310, 0x00},
	{0x0820, 0x0C},
	{0x0821, 0x80},
	{0x0822, 0x00},
	{0x0823, 0x00},
	{0x3A03, 0x06},
	{0x3A04, 0x28},
	{0x3A05, 0x04},
	{0x0B06, 0x01},
	{0x30A2, 0x00},
	{0x30B4, 0x00},
	{0x3A02, 0xFF},
	{0x3011, 0x00},
	{0x3013, 0x01},
	{0x0202, 0x08},
	{0x0203, 0x46},
	{0x0224, 0x01},
	{0x0225, 0xF4},
	{0x0204, 0x00},
	{0x0205, 0x00},
	{0x020E, 0x01},
	{0x020F, 0x00},
	{0x0210, 0x01},
	{0x0211, 0x00},
	{0x0212, 0x01},
	{0x0213, 0x00},
	{0x0214, 0x01},
	{0x0215, 0x00},
	{0x0216, 0x00},
	{0x0217, 0x00},
	{0x4170, 0x00},
	{0x4171, 0x10},
	{0x4176, 0x00},
	{0x4177, 0x3C},
	{0xAE20, 0x04},
	{0xAE21, 0x5C},
	{0x0138, 0x01},
	{0x0100, 0x01},
};



/*
 * Here we'll try to encapsulate the changes for just the output
 * video format.
 *
 */

static struct regval_list sensor_fmt_raw[] = {
};


static int sensor_g_exp(struct v4l2_subdev *sd, __s32 *value)
{
	struct sensor_info *info = to_state(sd);

	*value = info->exp;
	vfe_dev_dbg("sensor_get_exposure = %d\n", info->exp);
	return 0;
}

static int sensor_s_exp(struct v4l2_subdev *sd, unsigned int exp_val)
{
	unsigned char explow, exphigh;
	struct sensor_info *info = to_state(sd);

	if (exp_val > 0xffffff)
		exp_val = 0xfffff0;
	if (exp_val < 16)
		exp_val = 16;

	exp_val = (exp_val+8)>>4; /* rounding to 1 */

	exphigh = (unsigned char) ((0xff00&exp_val)>>8);
	explow  = (unsigned char) ((0x00ff&exp_val));

	sensor_write(sd, 0x0203, explow); /* coarse integration time */
	sensor_write(sd, 0x0202, exphigh);

	info->exp = exp_val;
	return 0;
}


static int sensor_g_gain(struct v4l2_subdev *sd, __s32 *value)
{
	struct sensor_info *info = to_state(sd);

	*value = info->gain;
	vfe_dev_dbg("sensor_get_gain = %d\n", info->gain);
	return 0;
}

static int sensor_s_gain(struct v4l2_subdev *sd, int gain_val)
{
	struct sensor_info *info = to_state(sd);
	unsigned char gainlow = 0;
	unsigned char gainhigh = 0;
	int gainana = 512 - 8192/gain_val;

	gainlow = (unsigned char)(gainana&0xff);
	gainhigh = (unsigned char)((gainana>>8)&0xff);

	sensor_write(sd, 0x0205, gainlow);
	sensor_write(sd, 0x0204, gainhigh);

	info->gain = gain_val;

	return 0;
}

static int sensor_s_exp_gain(struct v4l2_subdev *sd,
				struct sensor_exp_gain *exp_gain)
{
	int exp_val, gain_val, shutter, frame_length;
	struct sensor_info *info = to_state(sd);

	exp_val = exp_gain->exp_val;
	gain_val = exp_gain->gain_val;

	if (gain_val < 1*16)
		gain_val = 16;
	if (gain_val > 64*16-1)
		gain_val = 64*16-1;

	if (exp_val > 0xfffff)
		exp_val = 0xfffff;

	shutter = exp_val/16;
	if (shutter  > imx214_sensor_vts)
		frame_length = shutter;
	else
		frame_length = imx214_sensor_vts;

/* sensor_write(sd, 0x0341, (frame_length & 0xff)); */
/* sensor_write(sd, 0x0340, (frame_length >> 8)); */

	sensor_write(sd, 0x0104, 0x01);
	sensor_s_exp(sd, exp_val);
	sensor_s_gain(sd, gain_val);
	sensor_write(sd, 0x0104, 0x00);

	if (gain_val > 64) {
		sensor_write(sd, 0x30a2, 0x03); /* enable LNR CNR */
		sensor_write(sd, 0x9706, (gain_val-64)/12); /* LNR 0x00~0x10 */
		sensor_write(sd, 0x9e25, (gain_val-64));    /* CNR 0x00~0x8c */
	} else
		sensor_write(sd, 0x30a2, 0x00);

	info->exp = exp_val;
	info->gain = gain_val;
	return 0;
}


/*
 * Stuff that knows about the sensor.
 */

static int sensor_power(struct v4l2_subdev *sd, int on)
{
	int ret;

	ret = 0;
	switch (on) {
	case CSI_SUBDEV_STBY_ON:
		vfe_dev_dbg("CSI_SUBDEV_STBY_ON!\n");
		cci_lock(sd);
		vfe_gpio_write(sd, RESET, CSI_GPIO_LOW);
		cci_unlock(sd);
		vfe_set_mclk(sd, OFF);
		break;
	case CSI_SUBDEV_STBY_OFF:
		vfe_dev_dbg("CSI_SUBDEV_STBY_OFF!\n");
		cci_lock(sd);
		vfe_set_mclk_freq(sd, MCLK);
		vfe_set_mclk(sd, ON);
		msleep(20);
		cci_unlock(sd);
		vfe_gpio_write(sd, RESET, CSI_GPIO_HIGH);
		break;
	case CSI_SUBDEV_PWR_ON:
		vfe_dev_dbg("CSI_SUBDEV_PWR_ON!\n");
		cci_lock(sd);
		vfe_gpio_set_status(sd, PWDN, 1);  /* set the gpio to output */
		vfe_gpio_set_status(sd, RESET, 1); /* set the gpio to output */
		vfe_gpio_write(sd, PWDN, CSI_GPIO_LOW);
		vfe_gpio_write(sd, RESET, CSI_GPIO_LOW);
		usleep_range(1000, 1200);
		vfe_set_mclk_freq(sd, MCLK);
		vfe_set_mclk(sd, ON);
		usleep_range(10000, 12000);
		vfe_gpio_write(sd, POWER_EN, CSI_GPIO_HIGH);
		vfe_set_pmu_channel(sd, IOVDD, ON);
		vfe_set_pmu_channel(sd, AVDD, ON);
		vfe_set_pmu_channel(sd, DVDD, ON);
		vfe_set_pmu_channel(sd, AFVDD, ON);
		usleep_range(10000, 12000);
		vfe_gpio_write(sd, PWDN, CSI_GPIO_HIGH);
		vfe_gpio_write(sd, RESET, CSI_GPIO_HIGH);

		usleep_range(30000, 31000);
		cci_unlock(sd);
		break;
	case CSI_SUBDEV_PWR_OFF:
		vfe_dev_dbg("CSI_SUBDEV_PWR_OFF!\n");
		cci_lock(sd);
		vfe_set_mclk(sd, OFF);
		vfe_gpio_write(sd, POWER_EN, CSI_GPIO_LOW);
		vfe_set_pmu_channel(sd, AFVDD, OFF);
		vfe_set_pmu_channel(sd, DVDD, OFF);
		vfe_set_pmu_channel(sd, AVDD, OFF);
		vfe_set_pmu_channel(sd, IOVDD, OFF);
		usleep_range(10000, 12000);
		vfe_gpio_write(sd, PWDN, CSI_GPIO_LOW);
		vfe_gpio_write(sd, RESET, CSI_GPIO_LOW);

		vfe_gpio_set_status(sd, RESET, 0); /* set the gpio to input */
		vfe_gpio_set_status(sd, PWDN, 0);  /* set the gpio to input */
		cci_unlock(sd);
		break;
	default:
		return -EINVAL;
	}
	return 0;
}

static int sensor_reset(struct v4l2_subdev *sd, u32 val)
{
	switch (val) {
	case 0:
		vfe_gpio_write(sd, RESET, CSI_GPIO_HIGH);
		usleep_range(10000, 12000);
		break;
	case 1:
		vfe_gpio_write(sd, RESET, CSI_GPIO_LOW);
		usleep_range(10000, 12000);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int sensor_detect(struct v4l2_subdev *sd)
{
	data_type rdval;

	LOG_ERR_RET(sensor_read(sd, 0x0000, &rdval));
	/* if((rdval&0x0f) != 0x02) */
	/* return -ENODEV; */

	LOG_ERR_RET(sensor_read(sd, 0x0001, &rdval));
	/* if(rdval != 0x14) */
	/* return -ENODEV; */
	vfe_dev_print("find the sony IMX214 ***********\n");
	return 0;
}

static int sensor_init(struct v4l2_subdev *sd, u32 val)
{
	int ret;
	struct sensor_info *info = to_state(sd);

	vfe_dev_dbg("sensor_init\n");

	/* Make sure it is a target sensor */
	ret = sensor_detect(sd);
	if (ret) {
		vfe_dev_err("chip found is not an target chip.\n");
		return ret;
	}

	vfe_get_standby_mode(sd, &info->stby_mode);

	if ((info->stby_mode == HW_STBY || info->stby_mode == SW_STBY)
			&& info->init_first_flag == 0) {
		vfe_dev_print("stby_mode and init_first_flag = 0\n");
		return 0;
	}

	info->focus_status = 0;
	info->low_speed = 0;
	info->width = 4208;
	info->height = 3120;
	info->hflip = 0;
	info->vflip = 0;
	info->gain = 0;

	info->tpf.numerator = 1;
	info->tpf.denominator = 30;    /* 30fps */

	ret = sensor_write_array(sd, sensor_default_regs,
				ARRAY_SIZE(sensor_default_regs));
	if (ret < 0) {
		vfe_dev_err("write sensor_default_regs error\n");
		return ret;
	}

	if (info->stby_mode == 0)
		info->init_first_flag = 0;

	info->preview_first_flag = 1;

	return 0;
}

static long sensor_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
	int ret = 0;
	struct sensor_info *info = to_state(sd);

	switch (cmd) {
	case GET_CURRENT_WIN_CFG:
		if (info->current_wins != NULL) {
			memcpy(arg,
				info->current_wins,
				sizeof(struct sensor_win_size));
			ret = 0;
		} else {
			vfe_dev_err("empty wins!\n");
			ret =  -1;
		}
		break;
	case SET_FPS:
		break;
	case ISP_SET_EXP_GAIN:
		ret = sensor_s_exp_gain(sd, (struct sensor_exp_gain *)arg);
		break;
	default:
		return -EINVAL;
	}
	return ret;
}


/*
 * Store information about the video data format.
 */
static struct sensor_format_struct {
	__u8 *desc;
	/* __u32 pixelformat; */
	u32 mbus_code;
	struct regval_list *regs;
	int regs_size;
	int bpp;   /* Bytes per pixel */
} sensor_formats[] = {
	{
		.desc       = "Raw RGB Bayer",
		.mbus_code  = MEDIA_BUS_FMT_SBGGR10_1X10,
		.regs       = sensor_fmt_raw,
		.regs_size  = ARRAY_SIZE(sensor_fmt_raw),
		.bpp        = 1
	},
};
#define N_FMTS ARRAY_SIZE(sensor_formats)



/*
 * Then there is the issue of window sizes.  Try to capture the info here.
 */


static struct sensor_win_size sensor_win_sizes[] = {
#if 1
	/* Fullsize: 4208*3120 */
	{
		.width      = 4208,
		.height     = 3120,
		.hoffset    = 0,
		.voffset    = 0,
		.hts        = 5008,
		.vts        = 3194,
		.pclk       = 320*1000*1000,
		.mipi_bps   = 800*1000*1000,
		.fps_fixed  = 2,
		.bin_factor = 1,
		.intg_min   = 16,
		.intg_max   = (3194-10)<<4,
		.gain_min   = 16,
		.gain_max   = (16<<4),
		.regs       = sensor_13mega_regs,
		.regs_size  = ARRAY_SIZE(sensor_13mega_regs),
		.set_size   = NULL,
	},
#endif
#if 1
	/*4k video*/
	{
		.width      = 3840,
		.height     = 2160,
		.hoffset    = 0, /* (4096-3840)>>1, */
		.voffset    = 0,
		.hts        = 5008,
		.vts        = 2362, /* 2200, */
		.pclk       = 355*1000*1000, /* 320 */
		.mipi_bps   = 888*1000*1000, /* 800 */
		.fps_fixed  = 2,
		.bin_factor = 1,
		.intg_min   = 16,
		.intg_max   = (2362-10)<<4,
		.gain_min   = 16,
		.gain_max   = (16<<4),
		.regs       = sensor_4k_videos,
		.regs_size  = ARRAY_SIZE(sensor_4k_videos),
		.set_size   = NULL,
	},

	/* 1080p */
	{
		.width      = 1920,
		.height     = 1080,
		.hoffset    = 0,
		.voffset    = 0,
		.hts        = 5008,
		.vts        = 2128,
		.pclk       = 320*1000*1000,
		.mipi_bps   = 800*1000*1000,
		.fps_fixed  = 1,
		.bin_factor = 1,
		.intg_min   = 16,
		.intg_max   = (2128-10)<<4,
		.gain_min   = 16,
		.gain_max   = (16<<4),
		.regs       = sensor_1080p_regs,
		.regs_size  = ARRAY_SIZE(sensor_1080p_regs),
		.set_size   = NULL,
	},
#endif

};

#define N_WIN_SIZES (ARRAY_SIZE(sensor_win_sizes))

static int sensor_enum_code(struct v4l2_subdev *sd,
				struct v4l2_subdev_pad_config *cfg,
				struct v4l2_subdev_mbus_code_enum *code)
{
	if (code->index >= N_FMTS)
		return -EINVAL;

	code->code = sensor_formats[code->index].mbus_code;
	return 0;
}

static int sensor_enum_frame_size(struct v4l2_subdev *sd,
				struct v4l2_subdev_pad_config *cfg,
				struct v4l2_subdev_frame_size_enum *fse)
{
	if (fse->index > N_WIN_SIZES-1)
		return -EINVAL;

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

	return 0;
}


static int sensor_try_fmt_internal(struct v4l2_subdev *sd,
				struct v4l2_mbus_framefmt *fmt,
				struct sensor_format_struct **ret_fmt,
				struct sensor_win_size **ret_wsize)
{
	int index;
	struct sensor_win_size *wsize;
	struct sensor_info *info = to_state(sd);

	for (index = 0; index < N_FMTS; index++)
		if (sensor_formats[index].mbus_code == fmt->code)
			break;

	if (index >= N_FMTS)
		return -EINVAL;

	if (ret_fmt != NULL)
		*ret_fmt = sensor_formats + index;

	/*
	 * Fields: the sensor devices claim to be progressive.
	 */
	fmt->field = V4L2_FIELD_NONE;

	/*
	 * Round requested image size down to the nearest
	 * we support, but not below the smallest.
	 */
	for (wsize = sensor_win_sizes; wsize < sensor_win_sizes + N_WIN_SIZES; wsize++)
		if (fmt->width >= wsize->width && fmt->height >= wsize->height)
			break;

	if (wsize >= sensor_win_sizes + N_WIN_SIZES)
		wsize--;   /* Take the smallest one */
	if (ret_wsize != NULL)
		*ret_wsize = wsize;
	/*
	 * Note the size we'll actually handle.
	 */
	fmt->width = wsize->width;
	fmt->height = wsize->height;
	info->current_wins = wsize;
	return 0;
}

static int sensor_get_fmt(struct v4l2_subdev *sd,
				struct v4l2_subdev_pad_config *cfg,
				struct v4l2_subdev_format *fmat)
{
	struct v4l2_mbus_framefmt *fmt = &fmat->format;

	return sensor_try_fmt_internal(sd, fmt, NULL, NULL);
}

static int sensor_g_mbus_config(struct v4l2_subdev *sd,
				struct v4l2_mbus_config *cfg)
{
	cfg->type = V4L2_MBUS_CSI2;
	cfg->flags = 0|V4L2_MBUS_CSI2_4_LANE|V4L2_MBUS_CSI2_CHANNEL_0;

	return 0;
}


/*
 * Set a format.
 */
static int sensor_set_fmt(struct v4l2_subdev *sd,
				struct v4l2_subdev_pad_config *cfg,
				struct v4l2_subdev_format *fmat)
{
	int ret;
	struct v4l2_mbus_framefmt *fmt = &fmat->format;
	struct sensor_format_struct *sensor_fmt;
	struct sensor_win_size *wsize;
	struct sensor_info *info = to_state(sd);

	vfe_dev_dbg("sensor_s_fmt\n");

	ret = sensor_try_fmt_internal(sd, fmt, &sensor_fmt, &wsize);
	if (ret)
		return ret;

/*
 *if (info->capture_mode == V4L2_MODE_VIDEO)
 *{
 * //video
 *} else if(info->capture_mode == V4L2_MODE_IMAGE)
 *{
 * //image
 *}
 */

	sensor_write_array(sd, sensor_fmt->regs, sensor_fmt->regs_size);

	ret = 0;
	if (wsize->regs)
		LOG_ERR_RET(sensor_write_array(sd, wsize->regs,
					wsize->regs_size));

	if (wsize->set_size)
		LOG_ERR_RET(wsize->set_size(sd));

	info->fmt = sensor_fmt;
	info->width = wsize->width;
	info->height = wsize->height;
	imx214_sensor_vts = wsize->vts;

	vfe_dev_print("s_fmt set width = %d, height = %d\n",
				wsize->width, wsize->height);

/*
 *if (info->capture_mode == V4L2_MODE_VIDEO)
 *{
 * //video
 *} else {
 * //capture image
 *}
 */

	vfe_dev_print("s_fmt end\n");
	return 0;
}

/*
 * Implement G/S_PARM.  There is a "high quality" mode we could try
 * to do someday; for now, we just do the frame rate tweak.
 */
static int sensor_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
{
	struct v4l2_captureparm *cp = &parms->parm.capture;
	struct sensor_info *info = to_state(sd);

	if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	memset(cp, 0, sizeof(struct v4l2_captureparm));
	cp->capability = V4L2_CAP_TIMEPERFRAME;
	cp->capturemode = info->capture_mode;

	return 0;
}

static int sensor_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
{
	struct v4l2_captureparm *cp = &parms->parm.capture;
	struct sensor_info *info = to_state(sd);

	vfe_dev_dbg("sensor_s_parm\n");

	if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
		return -EINVAL;

	if (info->tpf.numerator == 0)
		return -EINVAL;

	info->capture_mode = cp->capturemode;

	return 0;
}

static int sensor_g_ctrl(struct v4l2_ctrl *ctrl)
{
	struct sensor_info *info =
			container_of(ctrl->handler, struct sensor_info, handler);
	struct v4l2_subdev *sd = &info->sd;

	switch (ctrl->id) {
	case V4L2_CID_GAIN:
		return sensor_g_gain(sd, &ctrl->val);
	case V4L2_CID_EXPOSURE:
		return sensor_g_exp(sd, &ctrl->val);
	}
	return -EINVAL;
}

static int sensor_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct sensor_info *info =
			container_of(ctrl->handler, struct sensor_info, handler);
	struct v4l2_subdev *sd = &info->sd;

	switch (ctrl->id) {
	case V4L2_CID_GAIN:
		return sensor_s_gain(sd, ctrl->val);
	case V4L2_CID_EXPOSURE:
		return sensor_s_exp(sd, ctrl->val);
	}
	return -EINVAL;
}


/* ------------------------------------------------------------------ */

static const struct v4l2_ctrl_ops sensor_ctrl_ops = {
	.g_volatile_ctrl = sensor_g_ctrl,
	.s_ctrl = sensor_s_ctrl,
};

static const struct v4l2_subdev_core_ops sensor_core_ops = {
	.reset = sensor_reset,
	.init = sensor_init,
	.s_power = sensor_power,
	.ioctl = sensor_ioctl,
};

static const struct v4l2_subdev_video_ops sensor_video_ops = {
	.s_parm = sensor_s_parm,
	.g_parm = sensor_g_parm,
	.g_mbus_config = sensor_g_mbus_config,
};

static const struct v4l2_subdev_pad_ops sensor_pad_ops = {
	.enum_mbus_code = sensor_enum_code,
	.enum_frame_size = sensor_enum_frame_size,
	.get_fmt = sensor_get_fmt,
	.set_fmt = sensor_set_fmt,
};

static const struct v4l2_subdev_ops sensor_ops = {
	.core = &sensor_core_ops,
	.video = &sensor_video_ops,
	.pad = &sensor_pad_ops,
};

/* ------------------------------------------------------------------- */
static struct cci_driver cci_drv = {
	.name = SENSOR_NAME,
	.addr_width = CCI_BITS_16,
	.data_width = CCI_BITS_8,
};

static const struct v4l2_ctrl_config sensor_custom_ctrls[] = {
	{
		.ops = &sensor_ctrl_ops,
		.id = V4L2_CID_FRAME_RATE,
		.name = "frame rate",
		.type = V4L2_CTRL_TYPE_INTEGER,
		.min = 15,
		.max = 120,
		.step = 1,
		.def = 120,
	},
};

static int sensor_init_controls(struct v4l2_subdev *sd, const struct v4l2_ctrl_ops *ops)
{
	struct sensor_info *info = to_state(sd);
	struct v4l2_ctrl_handler *handler = &info->handler;
	struct v4l2_ctrl *ctrl;
	int ret = 0;
	int i;

	v4l2_ctrl_handler_init(handler, 2 +  ARRAY_SIZE(sensor_custom_ctrls));

	ctrl = v4l2_ctrl_new_std(handler, ops, V4L2_CID_GAIN, 1*16, 64*16-1, 1, 1*16);
	if (ctrl != NULL)
		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
	ctrl = v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, 0, 65536*16, 1, 0);
	if (ctrl != NULL)
		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
	for (i = 0; i < ARRAY_SIZE(sensor_custom_ctrls); i++)
		v4l2_ctrl_new_custom(handler, &sensor_custom_ctrls[i], NULL);

	if (handler->error) {
		ret = handler->error;
		v4l2_ctrl_handler_free(handler);
	}

	sd->ctrl_handler = handler;

	return ret;
}

static int sensor_probe(struct i2c_client *client,
				const struct i2c_device_id *id)
{
	struct v4l2_subdev *sd;
	struct sensor_info *info;

	info = kzalloc(sizeof(struct sensor_info), GFP_KERNEL);
	if (info == NULL)
		return -ENOMEM;
	sd = &info->sd;
	glb_sd = sd;
	sensor_init_controls(sd, &sensor_ctrl_ops);
	cci_dev_probe_helper(sd, client, &sensor_ops, &cci_drv);

	info->fmt = &sensor_formats[0];
	info->af_first_flag = 1;
	info->init_first_flag = 1;

	return 0;
}
static int sensor_remove(struct i2c_client *client)
{
	struct v4l2_subdev *sd;

	sd = cci_dev_remove_helper(client, &cci_drv);
	kfree(to_state(sd));
	return 0;
}

static const struct i2c_device_id sensor_id[] = {
	{SENSOR_NAME, 0},
	{ }
};
MODULE_DEVICE_TABLE(i2c, sensor_id);


static struct i2c_driver sensor_driver = {
	.driver = {
		.owner = THIS_MODULE,
		.name = SENSOR_NAME,
	},
	.probe = sensor_probe,
	.remove = sensor_remove,
	.id_table = sensor_id,
};
static __init int init_sensor(void)
{
	return cci_dev_init_helper(&sensor_driver);
}

static __exit void exit_sensor(void)
{
	cci_dev_exit_helper(&sensor_driver);
}

module_init(init_sensor);
module_exit(exit_sensor);