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https://github.com/Telecominfraproject/OpenCellular.git
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4e7e1bb796
Add config settings for ODR and EC rate per requestor and per power state (1 for the AP, 3 for the EC). This way we can finely set ec rate and ODR depending on usage. On chromeos, AP is not setting frequency, so EC sets for different power state. On some platform, sensors can now be suspended in S3/S5. Allow EC oversampling when AP is only looking for a few samples. It is useful for double tap detection where high accelerator ODR is required. BRANCH=ryu TEST=Tested on Ryu BUG=chromium:513458 Change-Id: Ic3888a749699f07b10c5da3bc07204afd4de70da Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/295637
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/* Copyright (c) 2014 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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#ifndef __CROS_EC_ACCELGYRO_H
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#define __CROS_EC_ACCELGYRO_H
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#include "motion_sense.h"
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/* Header file for accelerometer / gyro drivers. */
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/* Number of counts from accelerometer that represents 1G acceleration. */
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#define ACCEL_G 1024
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struct accelgyro_drv {
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/**
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* Initialize accelerometers.
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* @s Pointer to sensor data pointer. Sensor data will be
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* allocated on success.
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*init)(const struct motion_sensor_t *s);
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/**
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* Read all three accelerations of an accelerometer. Note that all
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* three accelerations come back in counts, where ACCEL_G can be used
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* to convert counts to engineering units.
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* @s Pointer to sensor data.
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* @v Vector to store acceleration (in units of counts).
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*read)(const struct motion_sensor_t *s, vector_3_t v);
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/**
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* Setter and getter methods for the sensor range. The sensor range
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* defines the maximum value that can be returned from read(). As the
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* range increases, the resolution gets worse.
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* @s Pointer to sensor data.
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* @range Range (Units are +/- G's for accel, +/- deg/s for gyro)
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* @rnd Rounding flag. If true, it rounds up to nearest valid
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* value. Otherwise, it rounds down.
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*set_range)(const struct motion_sensor_t *s,
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int range,
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int rnd);
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int (*get_range)(const struct motion_sensor_t *s);
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/**
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* Setter and getter methods for the sensor resolution.
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* @s Pointer to sensor data.
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* @range Resolution (Units are number of bits)
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* param rnd Rounding flag. If true, it rounds up to nearest valid
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* value. Otherwise, it rounds down.
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*set_resolution)(const struct motion_sensor_t *s,
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int res,
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int rnd);
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int (*get_resolution)(const struct motion_sensor_t *s);
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/**
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* Setter and getter methods for the sensor output data range. As the
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* ODR increases, the LPF roll-off frequency also increases.
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* @s Pointer to sensor data.
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* @rate Output data rate (units are milli-Hz)
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* @rnd Rounding flag. If true, it rounds up to nearest valid
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* value. Otherwise, it rounds down.
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*set_data_rate)(const struct motion_sensor_t *s,
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int rate,
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int rnd);
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int (*get_data_rate)(const struct motion_sensor_t *s);
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/**
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* Setter and getter methods for the sensor offset.
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* @s Pointer to sensor data.
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* @offset: offset to apply to raw data.
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* @temp: temperature when calibration was done.
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* @return EC_SUCCESS if successful, non-zero if error.
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*/
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int (*set_offset)(const struct motion_sensor_t *s,
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const int16_t *offset,
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int16_t temp);
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int (*get_offset)(const struct motion_sensor_t *s,
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int16_t *offset,
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int16_t *temp);
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int (*perform_calib)(const struct motion_sensor_t *s);
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#ifdef CONFIG_ACCEL_INTERRUPTS
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/**
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* Setup a one-time accel interrupt. If the threshold is low enough, the
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* interrupt may trigger due simply to noise and not any real motion.
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* If the threshold is 0, the interrupt will fire immediately.
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* @s Pointer to sensor data.
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* @threshold Threshold for interrupt in units of counts.
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*/
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int (*set_interrupt)(const struct motion_sensor_t *s,
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unsigned int threshold);
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/**
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* handler for interrupts triggered by the sensor: it runs in task and
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* process the events that triggered an interrupt.
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* @s Pointer to sensor data.
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* @event Event to process.
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*/
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int (*irq_handler)(struct motion_sensor_t *s, uint32_t event);
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#endif
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#ifdef CONFIG_ACCEL_FIFO
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/**
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* Retrieve hardware FIFO from sensor,
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* - put data in Sensor Hub fifo.
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* - update sensor raw_xyz vector with the last information.
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* We put raw data in hub fifo and process data from theres.
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* @s Pointer to sensor data.
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*/
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int (*load_fifo)(struct motion_sensor_t *s);
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#endif
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};
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/* Used to save sensor information */
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struct accelgyro_saved_data_t {
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int odr;
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int range;
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};
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#endif /* __CROS_EC_ACCELGYRO_H */
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