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/* Copyright (c) 2014 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.
*/
/* Header for motion_sense.c */
#ifndef __CROS_EC_MOTION_SENSE_H
#define __CROS_EC_MOTION_SENSE_H
#include "chipset.h"
#include "common.h"
#include "ec_commands.h"
#include "gpio.h"
#include "math_util.h"
#include "queue.h"
#include "timer.h"
enum sensor_state {
SENSOR_NOT_INITIALIZED = 0,
SENSOR_INITIALIZED = 1,
SENSOR_INIT_ERROR = 2
};
#define SENSOR_ACTIVE_S5 CHIPSET_STATE_SOFT_OFF
#define SENSOR_ACTIVE_S3 CHIPSET_STATE_SUSPEND
#define SENSOR_ACTIVE_S0 CHIPSET_STATE_ON
#define SENSOR_ACTIVE_S0_S3 (SENSOR_ACTIVE_S3 | SENSOR_ACTIVE_S0)
#define SENSOR_ACTIVE_S0_S3_S5 (SENSOR_ACTIVE_S0_S3 | SENSOR_ACTIVE_S5)
/* Events the motion sense task may have to process.*/
#define TASK_EVENT_MOTION_FLUSH_PENDING TASK_EVENT_CUSTOM(1)
#define TASK_EVENT_MOTION_INTERRUPT TASK_EVENT_CUSTOM(2)
#define TASK_EVENT_MOTION_ODR_CHANGE TASK_EVENT_CUSTOM(4)
/* Define sensor sampling interval in suspend. */
#ifdef CONFIG_GESTURE_DETECTION
#define SUSPEND_SAMPLING_INTERVAL (CONFIG_GESTURE_SAMPLING_INTERVAL_MS * MSEC)
#elif defined(CONFIG_ACCEL_FIFO)
#define SUSPEND_SAMPLING_INTERVAL (1000 * MSEC)
#else
#define SUSPEND_SAMPLING_INTERVAL (100 * MSEC)
#endif
/* Minimum time in between running motion sense task loop. */
#define MIN_MOTION_SENSE_WAIT_TIME (3 * MSEC)
#define MAX_MOTION_SENSE_WAIT_TIME (60000 * MSEC)
struct motion_data_t {
/* data rate the sensor will measure, in mHz */
int odr;
/* range of measurement in SI */
int range;
/* delay between collection by EC, in ms.
* For non FIFO sensor, should be nead 1e6/odr to
* collect events.
* For sensor with FIFO, can be much longer.
*/
unsigned ec_rate;
};
struct motion_sensor_t {
/* RO fields */
uint32_t active_mask;
char *name;
enum motionsensor_chip chip;
enum motionsensor_type type;
enum motionsensor_location location;
const struct accelgyro_drv *drv;
struct mutex *mutex;
void *drv_data;
uint8_t i2c_addr;
const matrix_3x3_t *rot_standard_ref;
/* Default configuration parameters, RO only */
struct motion_data_t default_config;
/* Run-Time configuration parameters */
struct motion_data_t runtime_config;
/* state parameters */
enum sensor_state state;
vector_3_t raw_xyz;
vector_3_t xyz;
/* How many flush events are pending */
uint32_t flush_pending;
/*
* How many vector events are lost in the FIFO since last time
* FIFO info has been transmitted.
*/
uint16_t lost;
/*
* Time since iast collection:
* For sensor with hardware FIFO, time since last sample
* has move from the hardware FIFO to the FIFO (used if fifo rate != 0).
* For sensor without FIFO, time since the last event was collect
* from sensor registers.
*/
int last_collection;
};
/* Defined at board level. */
extern struct motion_sensor_t motion_sensors[];
extern const unsigned motion_sensor_count;
/* For testing purposes: export the sampling interval. */
extern unsigned accel_interval;
int motion_sense_set_accel_interval(
struct motion_sensor_t *driving_sensor,
unsigned data);
/*
* Priority of the motion sense resume/suspend hooks, to be sure associated
* hooks are scheduled properly.
*/
#define MOTION_SENSE_HOOK_PRIO (HOOK_PRIO_DEFAULT)
#ifdef CONFIG_ACCEL_INTERRUPTS
/**
* Interrupt function for lid accelerometer.
*
* @param signal GPIO signal that caused interrupt
*/
void accel_int_lid(enum gpio_signal signal);
/**
* Interrupt function for base accelerometer.
*
* @param signal GPIO signal that caused interrupt
*/
void accel_int_base(enum gpio_signal signal);
#endif
#ifdef CONFIG_ACCEL_FIFO
extern struct queue motion_sense_fifo;
void motion_sense_fifo_add_unit(struct ec_response_motion_sensor_data *data,
const struct motion_sensor_t *sensor);
#endif
#endif /* __CROS_EC_MOTION_SENSE_H */
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