/*
 * 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-chip-ident.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 internel driver debug
#define DEV_DBG_EN      1 
#if(DEV_DBG_EN == 1)    
#define vfe_dev_dbg(x,arg...) printk("[IMX214]"x,##arg)
#else
#define vfe_dev_dbg(x,arg...) 
#endif
#define vfe_dev_err(x,arg...) printk("[IMX214]"x,##arg)
#define vfe_dev_print(x,arg...) printk("[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 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;
	printk("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;
	enum v4l2_mbus_pixelcode mbus_code;
	struct regval_list *regs;
	int regs_size;
	int bpp;   /* Bytes per pixel */
}sensor_formats[] = {
	{
		.desc				= "Raw RGB Bayer",
	    .mbus_code	= V4L2_MBUS_FMT_SBGGR10_10X1,
		.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_fmt(struct v4l2_subdev *sd, unsigned index,
                 enum v4l2_mbus_pixelcode *code)
{
	if (index >= N_FMTS)
		return -EINVAL;

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

static int sensor_enum_size(struct v4l2_subdev *sd,
                            struct v4l2_frmsizeenum *fsize)
{
	if(fsize->index > N_WIN_SIZES-1)
		return -EINVAL;
  
	fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
	fsize->discrete.width = sensor_win_sizes[fsize->index].width;
	fsize->discrete.height = sensor_win_sizes[fsize->index].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_try_fmt(struct v4l2_subdev *sd, 
             struct v4l2_mbus_framefmt *fmt)
{
	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_s_fmt(struct v4l2_subdev *sd, 
             struct v4l2_mbus_framefmt *fmt)
{
	int ret;
	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_queryctrl(struct v4l2_subdev *sd,
    struct v4l2_queryctrl *qc)
{
	/* Fill in min, max, step and default value for these controls. */
	/* see include/linux/videodev2.h for details */
  
	switch (qc->id) {
	case V4L2_CID_GAIN:
		return v4l2_ctrl_query_fill(qc, 1*16, 64*16-1, 1, 1*16);
	case V4L2_CID_EXPOSURE:
		return v4l2_ctrl_query_fill(qc, 0, 65535*16, 1, 0);
	case V4L2_CID_FRAME_RATE:
		return v4l2_ctrl_query_fill(qc, 15, 120, 1, 120);
	}
	return -EINVAL;
}

static int sensor_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	switch (ctrl->id) {
	case V4L2_CID_GAIN:
		return sensor_g_gain(sd, &ctrl->value);
	case V4L2_CID_EXPOSURE:
		return sensor_g_exp(sd, &ctrl->value);
	}
	return -EINVAL;
}

static int sensor_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct v4l2_queryctrl qc;
	int ret;

	qc.id = ctrl->id;
	ret = sensor_queryctrl(sd, &qc);
	if (ret < 0) {
		return ret;
	}

	if (ctrl->value < qc.minimum || ctrl->value > qc.maximum) {
		vfe_dev_err("max gain qurery is %d,min gain qurey is %d\n",qc.maximum,qc.minimum);
		return -ERANGE;
	}

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


static int sensor_g_chip_ident(struct v4l2_subdev *sd,
    struct v4l2_dbg_chip_ident *chip)
{
	struct i2c_client *client = v4l2_get_subdevdata(sd);

	return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SENSOR, 0);
}


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

static const struct v4l2_subdev_core_ops sensor_core_ops = {
	.g_chip_ident = sensor_g_chip_ident,
	.g_ctrl = sensor_g_ctrl,
	.s_ctrl = sensor_s_ctrl,
	.queryctrl = sensor_queryctrl,
	.reset = sensor_reset,
	.init = sensor_init,
	.s_power = sensor_power,
	.ioctl = sensor_ioctl,
};

static const struct v4l2_subdev_video_ops sensor_video_ops = {
	.enum_mbus_fmt = sensor_enum_fmt,
	.enum_framesizes = sensor_enum_size,
	.try_mbus_fmt = sensor_try_fmt,
	.s_mbus_fmt = sensor_s_fmt,
	.s_parm = sensor_s_parm,
	.g_parm = sensor_g_parm,
	.g_mbus_config = sensor_g_mbus_config,
};

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

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

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;
	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);