kernel_samsung_a34x-permissive/drivers/sensorhub/sensor/magnetometer_uncal.c

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/*
* Copyright (C) 2020, Samsung Electronics Co. Ltd. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/slab.h>
#include "../utility/shub_utility.h"
#include "../sensor/magnetometer.h"
#include "../sensormanager/shub_sensor.h"
#include "../sensormanager/shub_sensor_manager.h"
#define UNCAL_MAG_RECEIVE_EVENT_SIZE(x) ((x) * 6)
void print_magnetometer_uncal_debug(void)
{
struct shub_sensor *sensor = get_sensor(SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED);
struct sensor_event *event = &(sensor->last_event_buffer);
struct uncal_mag_event *sensor_value = (struct uncal_mag_event *)(event->value);
shub_info("%s(%u) : %d, %d, %d, %d, %d, %d (%lld) (%ums, %dms)",
sensor->name, SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED,
sensor_value->uncal_x, sensor_value->uncal_y, sensor_value->uncal_z,
sensor_value->offset_x, sensor_value->offset_y, sensor_value->offset_z, event->timestamp,
sensor->sampling_period, sensor->max_report_latency);
}
int get_magnetometer_uncal_sensor_value(char *dataframe, int *index, struct sensor_event *event, int frame_len)
{
struct shub_sensor *sensor = get_sensor(SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED);
struct uncal_mag_event *sensor_value = (struct uncal_mag_event *)event->value;
if (sensor->receive_event_size == sizeof(struct uncal_mag_event)) {
memcpy(sensor_value, dataframe + *index, sizeof(struct uncal_mag_event));
} else {
s16 temp_mag_value[6];
memcpy(&temp_mag_value, dataframe + *index, sizeof(temp_mag_value));
sensor_value->uncal_x = (s32) temp_mag_value[0];
sensor_value->uncal_y = (s32) temp_mag_value[1];
sensor_value->uncal_z = (s32) temp_mag_value[2];
sensor_value->offset_x = (s32) temp_mag_value[3];
sensor_value->offset_y = (s32) temp_mag_value[4];
sensor_value->offset_z = (s32) temp_mag_value[5];
}
*index += sensor->receive_event_size;
return 0;
}
static struct sensor_funcs magnetometer_uncal_sensor_funcs = {
.print_debug = print_magnetometer_uncal_debug,
.get_sensor_value = get_magnetometer_uncal_sensor_value,
};
int init_magnetometer_uncal(bool en)
{
int ret = 0;
struct shub_sensor *sensor = get_sensor(SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED);
if (!sensor)
return 0;
if (en) {
int receive_size = sensor->spec.version >= MAG_EVENT_SIZE_4BYTE_VERSION ?
UNCAL_MAG_RECEIVE_EVENT_SIZE(sizeof(s32)) : UNCAL_MAG_RECEIVE_EVENT_SIZE(sizeof(s16));
shub_infof("receive_event_size : %d", sensor->receive_event_size);
ret = init_default_func(sensor, "uncal_geomagnetic_sensor", receive_size, sizeof(struct uncal_mag_event), sizeof(struct uncal_mag_event));
sensor->report_mode_continuous = true;
sensor->funcs = &magnetometer_uncal_sensor_funcs;
} else {
destroy_default_func(sensor);
}
return ret;
}