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/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Commons acc/gyro function for ST sensors oin Chrome EC */
#ifndef __CROS_EC_ST_COMMONS_H
#define __CROS_EC_ST_COMMONS_H
#include "common.h"
#include "util.h"
#include "accelgyro.h"
#include "console.h"
#include "i2c.h"
/* X, Y, Z axis data len */
#define OUT_XYZ_SIZE 6
#define ST_NORMALIZE_RATE(_fs) (1 << __fls(_fs))
#ifdef CONFIG_ACCEL_FIFO
#define FIFO_BUFFER_NUM_PATTERN 8
/* Define number of data to be read from FIFO each time
* It must be a multiple of OUT_XYZ_SIZE.
* In case of LSM6DSM FIFO contains pattern depending ODR
* of Acc/gyro, be sure that FIFO can contains almost
* FIFO_BUFFER_NUM_PATTERNpattern
*/
#define FIFO_READ_LEN (FIFO_BUFFER_NUM_PATTERN * OUT_XYZ_SIZE)
#endif /* CONFIG_ACCEL_FIFO */
/**
* Read single register
*/
static inline int st_raw_read8(const int port,
const uint16_t i2c_spi_addr_flags,
const int reg, int *data_ptr)
{
/* TODO: Implement SPI interface support */
return i2c_read8(port, i2c_spi_addr_flags, reg, data_ptr);
}
/**
* Write single register
*/
static inline int st_raw_write8(const int port,
const uint16_t i2c_spi_addr_flags,
const int reg, int data)
{
/* TODO: Implement SPI interface support */
return i2c_write8(port, i2c_spi_addr_flags, reg, data);
}
/**
* st_raw_read_n - Read n bytes for read
*/
int st_raw_read_n(const int port,
const uint16_t i2c_spi_addr_flags,
const uint8_t reg, uint8_t *data_ptr, const int len);
/**
* st_raw_read_n_noinc - Read n bytes for read (no auto inc address)
*/
int st_raw_read_n_noinc(const int port,
const uint16_t i2c_spi_addr_flags,
const uint8_t reg, uint8_t *data_ptr, const int len);
/**
* st_write_data_with_mask - Write register with mask
* @s: Motion sensor pointer
* @reg: Device register
* @mask: The mask to search
* @data: Data pointer
*/
int st_write_data_with_mask(const struct motion_sensor_t *s, int reg,
uint8_t mask, uint8_t data);
/**
* st_get_resolution - Get bit resolution
* @s: Motion sensor pointer
*/
int st_get_resolution(const struct motion_sensor_t *s);
/**
* st_set_offset - Set data offset
* @s: Motion sensor pointer
* @offset: offset vector
* @temp: Temp
*/
int st_set_offset(const struct motion_sensor_t *s,
const int16_t *offset, int16_t temp);
/**
* st_get_offset - Get data offset
* @s: Motion sensor pointer
* @offset: offset vector
* @temp: Temp
*/
int st_get_offset(const struct motion_sensor_t *s,
int16_t *offset, int16_t *temp);
/**
* st_get_data_rate - Get data rate (ODR)
* @s: Motion sensor pointer
*/
int st_get_data_rate(const struct motion_sensor_t *s);
/**
* st_normalize - Apply to LSB data sensitivity and rotation
* @s: Motion sensor pointer
* @v: vector
* @data: LSB raw data
*/
void st_normalize(const struct motion_sensor_t *s, intv3_t v, uint8_t *data);
/* Internal data structure for sensors */
struct stprivate_data {
struct accelgyro_saved_data_t base;
int16_t offset[3];
uint8_t resol;
};
#endif /* __CROS_EC_ST_COMMONS_H */
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