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#ifndef __GP2A_H__
#define __GP2A_H__
#define I2C_M_WR 0 /* for i2c */
#define I2c_M_RD 1 /* for i2c */
//#define DELAY_PRX 1
#define IRQ_GP2A_INT IRQ_EINT2 /*s3c64xx int number */
#define I2C_DF_NOTIFY 0x01 /* for i2c */
//ADDSEL is LOW
#define GP2A_ADDR 0x88 /* slave addr for i2c */
#define REGS_PROX 0x0 // Read Only
#define REGS_GAIN 0x1 // Write Only
#define REGS_HYS 0x2 // Write Only
#define REGS_CYCLE 0x3 // Write Only
#define REGS_OPMOD 0x4 // Write Only
#if defined(CONFIG_GP2A_MODE_B)
#define REGS_CON 0x6 // Write Only
#endif
/* sensor type */
#define LIGHT 0
#define PROXIMITY 1
#define ALL 2
/* power control */
#define ON 1
#define OFF 0
/* IOCTL for proximity sensor */
#define SHARP_GP2AP_IOC_MAGIC 'C'
#define SHARP_GP2AP_OPEN _IO(SHARP_GP2AP_IOC_MAGIC,1)
#define SHARP_GP2AP_CLOSE _IO(SHARP_GP2AP_IOC_MAGIC,2)
/* input device for proximity sensor */
#define USE_INPUT_DEVICE 0 /* 0 : No Use , 1: Use */
#define INT_CLEAR 1 /* 0 = by polling operation, 1 = by interrupt operation */
#define LIGHT_PERIOD 1 /* per sec */
#define ADC_CHANNEL 9 /* index for s5pC110 9번 channel adc */
/*for light sensor */
#define STATE_NUM 3 /* number of states */
#define LIGHT_LOW_LEVEL 1 /* brightness of lcd */
#define LIGHT_MID_LEVEL 11
#define LIGHT_HIGH_LEVEL 23
#define ADC_BUFFER_NUM 6
#define GUARDBAND_BOTTOM_ADC 700
#define GUARDBAND_TOP_ADC 800
/*
* STATE0 : 30 lux below
* STATE1 : 31~ 3000 lux
* STATE2 : 3000 lux over
*/
#define ADC_CUT_HIGH 1100 /* boundary line between STATE_0 and STATE_1 */
#define ADC_CUT_LOW 220 /* boundary line between STATE_1 and STATE_2 */
#define ADC_CUT_GAP 50 /* in order to prevent chattering condition */
#define LIGHT_FOR_16LEVEL
/* 16 level for premium model*/
typedef enum t_light_state
{
LIGHT_DIM = 0,
LIGHT_LEVEL1 = 1,
LIGHT_LEVEL2 = 2,
LIGHT_LEVEL3 = 3,
LIGHT_LEVEL4 = 4,
LIGHT_LEVEL5 = 5,
LIGHT_LEVEL6 = 6,
LIGHT_LEVEL7 = 7,
LIGHT_LEVEL8 = 8,
LIGHT_LEVEL9 = 9,
LIGHT_LEVEL10 = 10,
LIGHT_LEVEL11 = 11,
LIGHT_LEVEL12 = 12,
LIGHT_LEVEL13 = 13,
LIGHT_LEVEL14 = 14,
LIGHT_LEVEL15 = 15,
LIGHT_LEVEL16 = 16,
LIGHT_INIT = 17,
}state_type;
/* initial value for sensor register */
static u8 gp2a_original_image[8] =
{
#if defined(CONFIG_GP2A_MODE_B)
0x00, // REGS_PROX
0x08, // REGS_GAIN
0x40, // REGS_HYS
0x04, // REGS_CYCLE
0x03, // REGS_OPMOD
#else
0x00,
0x08,
0xC2,
0x04,
0x01,
#endif
};
/* for state transition */
struct _light_state {
state_type type;
int adc_bottom_limit;
int adc_top_limit;
int brightness;
};
/* driver data */
struct gp2a_data {
struct input_dev *input_dev;
struct work_struct work_prox; /* for proximity sensor */
struct work_struct work_light; /* for light_sensor */
int irq;
struct hrtimer timer;
struct timer_list light_init_timer;
};
struct workqueue_struct *gp2a_wq;
#if defined(CONFIG_GP2A_MODE_B)
struct workqueue_struct *gp2a_wq_prox;
#endif
/* prototype */
extern short gp2a_get_proximity_value(void);
extern bool gp2a_get_lightsensor_status(void);
int opt_i2c_read(u8 reg, u8 *val, unsigned int len );
int opt_i2c_write( u8 reg, u8 *val );
extern int s3c_adc_get_adc_data(int channel);
void lightsensor_adjust_brightness(int level);
extern int lightsensor_backlight_level_ctrl(int value);
static int proximity_open(struct inode *ip, struct file *fp);
static int proximity_release(struct inode *ip, struct file *fp);
static int light_open(struct inode *ip, struct file *fp);
static int light_release(struct inode *ip, struct file *fp);
int lightsensor_get_adcvalue(void);
#endif
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