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-rw-r--r--libsensors/akm8975.c587
1 files changed, 0 insertions, 587 deletions
diff --git a/libsensors/akm8975.c b/libsensors/akm8975.c
deleted file mode 100644
index a8352ca..0000000
--- a/libsensors/akm8975.c
+++ /dev/null
@@ -1,587 +0,0 @@
-/*
- * Copyright (C) 2013 Paul Kocialkowski
- * Copyright (C) 2012 Asahi Kasei Microdevices Corporation, Japan
- *
- * 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 3 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <linux/ioctl.h>
-#include <linux/uinput.h>
-#include <linux/input.h>
-
-#include <hardware/sensors.h>
-#include <hardware/hardware.h>
-
-#define LOG_TAG "exynos_sensors"
-#include <utils/Log.h>
-
-#include "exynos_sensors.h"
-#include "akm8975.h"
-#include "akm8975-reg.h"
-
-#include <AKFS_Compass.h>
-#include <AKFS_FileIO.h>
-
-#define AKFS_CONFIG_PATH "/data/misc/akfs.txt"
-#define AKFS_PAT PAT3
-
-struct akm8975_data {
- struct exynos_sensors_handlers *orientation_sensor;
-
- AK8975PRMS akfs_params;
- sensors_vec_t magnetic;
-
- long int delay;
- int device_fd;
- int uinput_fd;
-
- pthread_t thread;
- pthread_mutex_t mutex;
- int thread_continue;
-};
-
-int akfs_get_magnetic_field(struct akm8975_data *akm8975_data, short *mag_data)
-{
- AK8975PRMS *params;
- int rc;
-
- if (akm8975_data == NULL || mag_data == NULL)
- return -EINVAL;
-
- params = &akm8975_data->akfs_params;
-
- /* Decomposition */
- /* Sensitivity adjustment, i.e. multiply ASA, is done in this function. */
- rc = AKFS_DecompAK8975(mag_data, 1, &params->mi_asa, AKFS_HDATA_SIZE, params->mfv_hdata);
- if (rc == AKFS_ERROR) {
- ALOGE("Failed to decomp!");
- return -1;
- }
-
- /* Adjust coordination */
- rc = AKFS_Rotate(params->m_hpat, &params->mfv_hdata[0]);
- if (rc == AKFS_ERROR) {
- ALOGE("Failed to rotate!");
- return -1;
- }
-
- /* AOC for magnetometer */
- /* Offset estimation is done in this function */
- AKFS_AOC(&params->m_aocv, params->mfv_hdata, &params->mfv_ho);
-
- /* Subtract offset */
- /* Then, a magnetic vector, the unit is uT, is stored in mfv_hvbuf. */
- rc = AKFS_VbNorm(AKFS_HDATA_SIZE, params->mfv_hdata, 1,
- &params->mfv_ho, &params->mfv_hs, AK8975_HSENSE_TARGET,
- AKFS_HDATA_SIZE, params->mfv_hvbuf);
- if (rc == AKFS_ERROR) {
- ALOGE("Failed to normalize!");
- return -1;
- }
-
- /* Averaging */
- rc = AKFS_VbAve(AKFS_HDATA_SIZE, params->mfv_hvbuf, CSPEC_HNAVE_V, &params->mfv_hvec);
- if (rc == AKFS_ERROR) {
- ALOGE("Failed to average!");
- return -1;
- }
-
- akm8975_data->magnetic.x = params->mfv_hvec.u.x;
- akm8975_data->magnetic.y = params->mfv_hvec.u.y;
- akm8975_data->magnetic.z = params->mfv_hvec.u.z;
-
- return 0;
-}
-
-int akfs_init(struct akm8975_data *akm8975_data, char *asa, AKFS_PATNO pat)
-{
- AK8975PRMS *params;
-
- if (akm8975_data == NULL || asa == NULL)
- return -EINVAL;
-
- params = &akm8975_data->akfs_params;
-
- memset(params, 0, sizeof(AK8975PRMS));
-
- /* Sensitivity */
- params->mfv_hs.u.x = AK8975_HSENSE_DEFAULT;
- params->mfv_hs.u.y = AK8975_HSENSE_DEFAULT;
- params->mfv_hs.u.z = AK8975_HSENSE_DEFAULT;
- params->mfv_as.u.x = AK8975_ASENSE_DEFAULT;
- params->mfv_as.u.y = AK8975_ASENSE_DEFAULT;
- params->mfv_as.u.z = AK8975_ASENSE_DEFAULT;
-
- /* Initialize variables that initial value is not 0. */
- params->mi_hnaveV = CSPEC_HNAVE_V;
- params->mi_hnaveD = CSPEC_HNAVE_D;
- params->mi_anaveV = CSPEC_ANAVE_V;
- params->mi_anaveD = CSPEC_ANAVE_D;
-
- /* Copy ASA values */
- params->mi_asa.u.x = asa[0];
- params->mi_asa.u.y = asa[1];
- params->mi_asa.u.z = asa[2];
-
- /* Copy layout pattern */
- params->m_hpat = pat;
-
- return 0;
-}
-
-void *akm8975_thread(void *thread_data)
-{
- struct exynos_sensors_handlers *handlers = NULL;
- struct akm8975_data *data = NULL;
- struct input_event event;
- struct timeval time;
- char i2c_data[SENSOR_DATA_SIZE] = { 0 };
- short mag_data[3];
- short mode;
- long int before, after;
- int diff;
- int device_fd;
- int uinput_fd;
- int rc;
-
- if (thread_data == NULL)
- return NULL;
-
- handlers = (struct exynos_sensors_handlers *) thread_data;
- if (handlers->data == NULL)
- return NULL;
-
- data = (struct akm8975_data *) handlers->data;
-
- device_fd = data->device_fd;
- if (device_fd < 0)
- return NULL;
-
- uinput_fd = data->uinput_fd;
- if (uinput_fd < 0)
- return NULL;
-
- while (data->thread_continue) {
- pthread_mutex_lock(&data->mutex);
- if (!data->thread_continue)
- break;
-
- while (handlers->activated) {
- gettimeofday(&time, NULL);
- before = timestamp(&time);
-
- mode = AK8975_MODE_SNG_MEASURE;
- rc = ioctl(device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0) {
- ALOGE("%s: Unable to set akm8975 mode", __func__);
- return NULL;
- }
-
- memset(&i2c_data, 0, sizeof(i2c_data));
- rc = ioctl(device_fd, ECS_IOCTL_GETDATA, &i2c_data);
- if (rc < 0) {
- ALOGE("%s: Unable to get akm8975 data", __func__);
- return NULL;
- }
-
- if (!(i2c_data[0] & 0x01)) {
- ALOGE("%s: akm8975 data is not ready", __func__);
- continue;
- }
-
- if (i2c_data[7] & (1 << 2) || i2c_data[7] & (1 << 3)) {
- ALOGE("%s: akm8975 data read error or overflow", __func__);
- continue;
- }
-
- mag_data[0] = (short) (i2c_data[2] << 8) | (i2c_data[1]);
- mag_data[1] = (short) (i2c_data[4] << 8) | (i2c_data[3]);
- mag_data[2] = (short) (i2c_data[6] << 8) | (i2c_data[5]);
-
- rc = akfs_get_magnetic_field(data, (short *) &mag_data);
- if (rc < 0) {
- ALOGE("%s: Unable to get AKFS magnetic field", __func__);
- continue;
- }
-
- input_event_set(&event, EV_REL, REL_X, (int) (data->magnetic.x * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_REL, REL_Y, (int) (data->magnetic.y * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_REL, REL_Z, (int) (data->magnetic.z * 1000));
- write(uinput_fd, &event, sizeof(event));
- input_event_set(&event, EV_SYN, 0, 0);
- write(uinput_fd, &event, sizeof(event));
-
- gettimeofday(&time, NULL);
- after = timestamp(&time);
-
- diff = (int) (data->delay - (after - before)) / 1000;
- if (diff <= 0)
- continue;
-
- usleep(diff);
- }
- }
- return NULL;
-}
-
-int akm8975_init(struct exynos_sensors_handlers *handlers,
- struct exynos_sensors_device *device)
-{
- struct akm8975_data *data = NULL;
- pthread_attr_t thread_attr;
- char i2c_data[4] = { 0 };
- short mode;
- int device_fd = -1;
- int uinput_fd = -1;
- int input_fd = -1;
- int rc;
- int i;
-
- ALOGD("%s(%p, %p)", __func__, handlers, device);
-
- if (handlers == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) calloc(1, sizeof(struct akm8975_data));
-
- for (i = 0; i < device->handlers_count; i++) {
- if (device->handlers[i] == NULL)
- continue;
-
- if (device->handlers[i]->handle == SENSOR_TYPE_ORIENTATION)
- data->orientation_sensor = device->handlers[i];
- }
-
- device_fd = open("/dev/akm8975", O_RDONLY);
- if (device_fd < 0) {
- ALOGE("%s: Unable to open device", __func__);
- goto error;
- }
-
- mode = AK8975_MODE_POWER_DOWN;
- rc = ioctl(device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0) {
- ALOGE("%s: Unable to set akm8975 mode", __func__);
- goto error;
- }
-
- mode = AK8975_MODE_FUSE_ACCESS;
- rc = ioctl(device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0) {
- ALOGE("%s: Unable to set akm8975 mode", __func__);
- goto error;
- }
-
- i2c_data[0] = 3;
- i2c_data[1] = AK8975_FUSE_ASAY;
- rc = ioctl(device_fd, ECS_IOCTL_READ, &i2c_data);
- if (rc < 0) {
- ALOGE("%s: Unable to set read akm8975 FUSE data", __func__);
- goto error;
- }
-
- ALOGD("AKM8975 ASA (Sensitivity Adjustment) values are: (%d, %d, %d)",
- i2c_data[1], i2c_data[2], i2c_data[3]);
-
- rc = akfs_init(data, &i2c_data[1], AKFS_PAT);
- if (rc < 0) {
- ALOGE("%s: Unable to init AKFS", __func__);
- goto error;
- }
-
- i2c_data[0] = 1;
- i2c_data[1] = AK8975_REG_WIA;
- rc = ioctl(device_fd, ECS_IOCTL_READ, &i2c_data);
- if (rc < 0) {
- ALOGE("%s: Unable to set read akm8975 FUSE data", __func__);
- goto error;
- }
-
- ALOGD("AKM8975 WIA (Device ID) value is: 0x%x", i2c_data[1]);
-
- mode = AK8975_MODE_POWER_DOWN;
- rc = ioctl(device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0) {
- ALOGE("%s: Unable to set akm8975 mode", __func__);
- goto error;
- }
-
- uinput_fd = uinput_rel_create("magnetic");
- if (uinput_fd < 0) {
- ALOGD("%s: Unable to create uinput", __func__);
- goto error;
- }
-
- input_fd = input_open("magnetic");
- if (input_fd < 0) {
- ALOGE("%s: Unable to open magnetic input", __func__);
- goto error;
- }
-
- data->thread_continue = 1;
-
- pthread_mutex_init(&data->mutex, NULL);
- pthread_mutex_lock(&data->mutex);
-
- pthread_attr_init(&thread_attr);
- pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);
-
- rc = pthread_create(&data->thread, &thread_attr, akm8975_thread, (void *) handlers);
- if (rc < 0) {
- ALOGE("%s: Unable to create acceleration thread", __func__);
- pthread_mutex_destroy(&data->mutex);
- goto error;
- }
-
- data->device_fd = device_fd;
- data->uinput_fd = uinput_fd;
- handlers->poll_fd = input_fd;
- handlers->data = (void *) data;
-
- return 0;
-
-error:
- if (data != NULL)
- free(data);
-
- if (uinput_fd >= 0)
- close(uinput_fd);
-
- if (input_fd >= 0)
- close(input_fd);
-
- if (device_fd >= 0)
- close(device_fd);
-
- handlers->poll_fd = -1;
- handlers->data = NULL;
-
- return -1;
-}
-
-int akm8975_deinit(struct exynos_sensors_handlers *handlers)
-{
- struct akm8975_data *data = NULL;
- short mode;
- int rc;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) handlers->data;
-
- handlers->activated = 0;
- data->thread_continue = 0;
- pthread_mutex_unlock(&data->mutex);
-
- pthread_mutex_destroy(&data->mutex);
-
- if (data->uinput_fd >= 0) {
- uinput_destroy(data->uinput_fd);
- close(data->uinput_fd);
- }
- data->uinput_fd = -1;
-
- if (handlers->poll_fd >= 0)
- close(handlers->poll_fd);
- handlers->poll_fd = -1;
-
- mode = AK8975_MODE_POWER_DOWN;
- rc = ioctl(data->device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0)
- ALOGE("%s: Unable to set akm8975 mode", __func__);
-
- if (data->device_fd >= 0)
- close(data->device_fd);
- data->device_fd = -1;
-
- free(handlers->data);
- handlers->data = NULL;
-
- return 0;
-}
-
-int akm8975_activate(struct exynos_sensors_handlers *handlers)
-{
- struct akm8975_data *data;
- AK8975PRMS *akfs_params;
- int rc;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) handlers->data;
- akfs_params = &data->akfs_params;
-
- /* Read setting files from a file */
- rc = AKFS_LoadParameters(akfs_params, AKFS_CONFIG_PATH);
- if (rc != AKM_SUCCESS)
- ALOGE("%s: Unable to read AKFS parameters", __func__);
-
- /* Initialize buffer */
- AKFS_InitBuffer(AKFS_HDATA_SIZE, akfs_params->mfv_hdata);
- AKFS_InitBuffer(AKFS_HDATA_SIZE, akfs_params->mfv_hvbuf);
- AKFS_InitBuffer(AKFS_ADATA_SIZE, akfs_params->mfv_adata);
- AKFS_InitBuffer(AKFS_ADATA_SIZE, akfs_params->mfv_avbuf);
-
- /* Initialize for AOC */
- AKFS_InitAOC(&akfs_params->m_aocv);
- /* Initialize magnetic status */
- akfs_params->mi_hstatus = 0;
-
- handlers->activated = 1;
- pthread_mutex_unlock(&data->mutex);
-
- return 0;
-}
-
-int akm8975_deactivate(struct exynos_sensors_handlers *handlers)
-{
- struct akm8975_data *data;
- AK8975PRMS *akfs_params;
- int device_fd;
- short mode;
- int rc;
-
- ALOGD("%s(%p)", __func__, handlers);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) handlers->data;
- akfs_params = &data->akfs_params;
-
- device_fd = data->device_fd;
- if (device_fd < 0)
- return -EINVAL;
-
- /* Write setting files to a file */
- rc = AKFS_SaveParameters(akfs_params, AKFS_CONFIG_PATH);
- if (rc != AKM_SUCCESS)
- ALOGE("%s: Unable to write AKFS parameters", __func__);
-
- mode = AK8975_MODE_POWER_DOWN;
- rc = ioctl(device_fd, ECS_IOCTL_SET_MODE, &mode);
- if (rc < 0)
- ALOGE("%s: Unable to set akm8975 mode", __func__);
-
- handlers->activated = 0;
-
- return 0;
-}
-
-int akm8975_set_delay(struct exynos_sensors_handlers *handlers, long int delay)
-{
- struct akm8975_data *data;
-
- ALOGD("%s(%p, %ld)", __func__, handlers, delay);
-
- if (handlers == NULL || handlers->data == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) handlers->data;
-
- data->delay = delay;
-
- return 0;
-}
-
-float akm8975_convert(int value)
-{
- return (float) value / 1000.0f;
-}
-
-int akm8975_get_data(struct exynos_sensors_handlers *handlers,
- struct sensors_event_t *event)
-{
- struct akm8975_data *data;
- struct input_event input_event;
- int input_fd;
- int rc;
-
-// ALOGD("%s(%p, %p)", __func__, handlers, event);
-
- if (handlers == NULL || handlers->data == NULL || event == NULL)
- return -EINVAL;
-
- data = (struct akm8975_data *) handlers->data;
-
- input_fd = handlers->poll_fd;
- if (input_fd < 0)
- return -EINVAL;
-
- event->version = sizeof(struct sensors_event_t);
- event->sensor = handlers->handle;
- event->type = handlers->handle;
-
- event->magnetic.status = SENSOR_STATUS_ACCURACY_MEDIUM;
-
- do {
- rc = read(input_fd, &input_event, sizeof(input_event));
- if (rc < (int) sizeof(input_event))
- break;
-
- if (input_event.type == EV_REL) {
- switch (input_event.code) {
- case REL_X:
- event->magnetic.x = akm8975_convert(input_event.value);
- break;
- case REL_Y:
- event->magnetic.y = akm8975_convert(input_event.value);
- break;
- case REL_Z:
- event->magnetic.z = akm8975_convert(input_event.value);
- break;
- default:
- continue;
- }
- } else if (input_event.type == EV_SYN) {
- if (input_event.code == SYN_REPORT)
- event->timestamp = input_timestamp(&input_event);
- }
- } while (input_event.type != EV_SYN);
-
- if (data->orientation_sensor != NULL)
- orientation_fill(data->orientation_sensor, NULL, &event->magnetic);
-
- return 0;
-}
-
-
-struct exynos_sensors_handlers akm8975 = {
- .name = "AKM8975",
- .handle = SENSOR_TYPE_MAGNETIC_FIELD,
- .init = akm8975_init,
- .deinit = akm8975_deinit,
- .activate = akm8975_activate,
- .deactivate = akm8975_deactivate,
- .set_delay = akm8975_set_delay,
- .get_data = akm8975_get_data,
- .activated = 0,
- .needed = 0,
- .poll_fd = -1,
- .data = NULL,
-};
generated by cgit v1.1 at 2024-05-12 01:29:56 +0000