126 lines
3.1 KiB
C
126 lines
3.1 KiB
C
/* Copyright 2016 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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/* Commons acc/gyro function for ST sensors oin Chrome EC */
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#ifndef __CROS_EC_ST_COMMONS_H
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#define __CROS_EC_ST_COMMONS_H
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#include "common.h"
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#include "util.h"
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#include "accelgyro.h"
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#include "console.h"
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#include "i2c.h"
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/* X, Y, Z axis data len */
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#define OUT_XYZ_SIZE 6
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#define ST_NORMALIZE_RATE(_fs) (1 << __fls(_fs))
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#ifdef CONFIG_ACCEL_FIFO
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#define FIFO_BUFFER_NUM_PATTERN 32
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/* Define number of data to be read from FIFO each time
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* It must be a multiple of OUT_XYZ_SIZE.
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* In case of LSM6DSM FIFO contains pattern depending ODR
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* of Acc/gyro, be sure that FIFO can contains almost
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* FIFO_BUFFER_NUM_PATTERNpattern
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*/
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#define FIFO_READ_LEN (FIFO_BUFFER_NUM_PATTERN * OUT_XYZ_SIZE)
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#endif /* CONFIG_ACCEL_FIFO */
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/**
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* Read single register
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*/
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static inline int st_raw_read8(const int port,
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const uint16_t i2c_spi_addr_flags,
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const int reg, int *data_ptr)
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{
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/* TODO: Implement SPI interface support */
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return i2c_read8(port, i2c_spi_addr_flags, reg, data_ptr);
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}
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/**
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* Write single register
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*/
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static inline int st_raw_write8(const int port,
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const uint16_t i2c_spi_addr_flags,
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const int reg, int data)
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{
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/* TODO: Implement SPI interface support */
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return i2c_write8(port, i2c_spi_addr_flags, reg, data);
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}
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/**
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* st_raw_read_n - Read n bytes for read
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*/
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int st_raw_read_n(const int port,
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const uint16_t i2c_spi_addr_flags,
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const uint8_t reg, uint8_t *data_ptr, const int len);
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/**
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* st_raw_read_n_noinc - Read n bytes for read (no auto inc address)
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*/
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int st_raw_read_n_noinc(const int port,
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const uint16_t i2c_spi_addr_flags,
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const uint8_t reg, uint8_t *data_ptr, const int len);
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/**
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* st_write_data_with_mask - Write register with mask
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* @s: Motion sensor pointer
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* @reg: Device register
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* @mask: The mask to search
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* @data: Data pointer
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*/
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int st_write_data_with_mask(const struct motion_sensor_t *s, int reg,
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uint8_t mask, uint8_t data);
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/**
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* st_get_resolution - Get bit resolution
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* @s: Motion sensor pointer
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*/
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int st_get_resolution(const struct motion_sensor_t *s);
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/**
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* st_set_offset - Set data offset
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* @s: Motion sensor pointer
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* @offset: offset vector
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* @temp: Temp
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*/
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int st_set_offset(const struct motion_sensor_t *s,
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const int16_t *offset, int16_t temp);
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/**
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* st_get_offset - Get data offset
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* @s: Motion sensor pointer
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* @offset: offset vector
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* @temp: Temp
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*/
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int st_get_offset(const struct motion_sensor_t *s,
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int16_t *offset, int16_t *temp);
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/**
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* st_get_data_rate - Get data rate (ODR)
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* @s: Motion sensor pointer
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*/
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int st_get_data_rate(const struct motion_sensor_t *s);
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/**
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* st_normalize - Apply to LSB data sensitivity and rotation
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* @s: Motion sensor pointer
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* @v: vector
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* @data: LSB raw data
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*/
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void st_normalize(const struct motion_sensor_t *s, intv3_t v, uint8_t *data);
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/* Internal data structure for sensors */
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struct stprivate_data {
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struct accelgyro_saved_data_t base;
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int16_t offset[3];
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uint8_t resol;
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};
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#endif /* __CROS_EC_ST_COMMONS_H */
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