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/* Copyright 2015 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* TI OPT3001 light sensor driver
*/
#ifndef __CROS_EC_ALS_OPT3001_H
#define __CROS_EC_ALS_OPT3001_H
/* I2C interface */
#define OPT3001_I2C_ADDR1_FLAGS 0x44
#define OPT3001_I2C_ADDR2_FLAGS 0x45
#define OPT3001_I2C_ADDR3_FLAGS 0x46
#define OPT3001_I2C_ADDR4_FLAGS 0x47
/* OPT3001 registers */
#define OPT3001_REG_RESULT 0x00
#define OPT3001_REG_CONFIGURE 0x01
#define OPT3001_RANGE_OFFSET 12
#define OPT3001_RANGE_MASK 0x0fff
#define OPT3001_MODE_OFFSET 9
#define OPT3001_MODE_MASK 0xf9ff
enum opt3001_mode {
OPT3001_MODE_SUSPEND,
OPT3001_MODE_FORCED,
OPT3001_MODE_CONTINUOUS,
};
#define OPT3001_REG_INT_LIMIT_LSB 0x02
#define OPT3001_REG_INT_LIMIT_MSB 0x03
#define OPT3001_REG_MAN_ID 0x7e
#define OPT3001_REG_DEV_ID 0x7f
/* OPT3001 register values */
#define OPT3001_MANUFACTURER_ID 0x5449
#define OPT3001_DEVICE_ID 0x3001
/*
* Min and Max sampling frequency in mHz.
* Due to integration set at 800ms, we limit max frequency to 1Hz.
*/
#define OPT3001_LIGHT_MIN_FREQ 100
#define OPT3001_LIGHT_MAX_FREQ 1000
#if (CONFIG_EC_MAX_SENSOR_FREQ_MILLIHZ <= OPT3001_LIGHT_MAX_FREQ)
#error "EC too slow for light sensor"
#endif
#ifdef HAS_TASK_ALS
int opt3001_init(void);
int opt3001_read_lux(int *lux, int af);
#else
#define OPT3001_GET_DATA(_s) ((struct opt3001_drv_data_t *)(_s)->drv_data)
struct opt3001_drv_data_t {
int rate;
int last_value;
/* the coef is scale.uscale */
int16_t scale;
uint16_t uscale;
int16_t offset;
};
extern const struct accelgyro_drv opt3001_drv;
#endif
#ifdef CONFIG_CMD_I2C_STRESS_TEST_ALS
extern struct i2c_stress_test_dev opt3001_i2c_stress_test_dev;
#endif
#endif /* __CROS_EC_ALS_OPT3001_H */
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