69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
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/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* TI OPT3001 light sensor driver
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*/
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#ifndef __CROS_EC_ALS_OPT3001_H
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#define __CROS_EC_ALS_OPT3001_H
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/* I2C interface */
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#define OPT3001_I2C_ADDR1_FLAGS 0x44
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#define OPT3001_I2C_ADDR2_FLAGS 0x45
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#define OPT3001_I2C_ADDR3_FLAGS 0x46
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#define OPT3001_I2C_ADDR4_FLAGS 0x47
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/* OPT3001 registers */
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#define OPT3001_REG_RESULT 0x00
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#define OPT3001_REG_CONFIGURE 0x01
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#define OPT3001_RANGE_OFFSET 12
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#define OPT3001_RANGE_MASK 0x0fff
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#define OPT3001_MODE_OFFSET 9
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#define OPT3001_MODE_MASK 0xf9ff
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enum opt3001_mode {
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OPT3001_MODE_SUSPEND,
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OPT3001_MODE_FORCED,
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OPT3001_MODE_CONTINUOUS,
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};
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#define OPT3001_REG_INT_LIMIT_LSB 0x02
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#define OPT3001_REG_INT_LIMIT_MSB 0x03
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#define OPT3001_REG_MAN_ID 0x7e
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#define OPT3001_REG_DEV_ID 0x7f
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/* OPT3001 register values */
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#define OPT3001_MANUFACTURER_ID 0x5449
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#define OPT3001_DEVICE_ID 0x3001
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/* Min and Max sampling frequency in mHz */
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#define OPT3001_LIGHT_MIN_FREQ 1250
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#define OPT3001_LIGHT_MAX_FREQ 10000
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#if (CONFIG_EC_MAX_SENSOR_FREQ_MILLIHZ <= OPT3001_LIGHT_MAX_FREQ)
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#error "EC too slow for light sensor"
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#endif
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#ifdef HAS_TASK_ALS
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int opt3001_init(void);
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int opt3001_read_lux(int *lux, int af);
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#else
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#define OPT3001_GET_DATA(_s) ((struct opt3001_drv_data_t *)(_s)->drv_data)
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struct opt3001_drv_data_t {
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int rate;
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int last_value;
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/* the coef is scale.uscale */
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int16_t scale;
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uint16_t uscale;
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int16_t offset;
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};
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extern const struct accelgyro_drv opt3001_drv;
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#endif
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#ifdef CONFIG_CMD_I2C_STRESS_TEST_ALS
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extern struct i2c_stress_test_dev opt3001_i2c_stress_test_dev;
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#endif
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#endif /* __CROS_EC_ALS_OPT3001_H */
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