diff options
Diffstat (limited to 'libsensors/bh1721.c')
| -rw-r--r-- | libsensors/bh1721.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/libsensors/bh1721.c b/libsensors/bh1721.c deleted file mode 100644 index bdc41b5..0000000 --- a/libsensors/bh1721.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * Copyright (C) 2013 Paul Kocialkowski <contact@paulk.fr> - * - * 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 <string.h> -#include <unistd.h> -#include <stdint.h> -#include <fcntl.h> -#include <errno.h> -#include <math.h> -#include <sys/types.h> -#include <linux/ioctl.h> -#include <linux/input.h> - -#include <hardware/sensors.h> -#include <hardware/hardware.h> - -#define LOG_TAG "piranha_sensors" -#include <utils/Log.h> - -#include "piranha_sensors.h" - -struct bh1721_data { - char path_enable[PATH_MAX]; - char path_delay[PATH_MAX]; -}; - -int bh1721_init(struct piranha_sensors_handlers *handlers, - struct piranha_sensors_device *device) -{ - struct bh1721_data *data = NULL; - char path[PATH_MAX] = { 0 }; - int input_fd = -1; - int rc; - - ALOGD("%s(%p, %p)", __func__, handlers, device); - - if (handlers == NULL) - return -EINVAL; - - data = (struct bh1721_data *) calloc(1, sizeof(struct bh1721_data)); - - input_fd = input_open("light_sensor"); - if (input_fd < 0) { - ALOGE("%s: Unable to open input", __func__); - goto error; - } - - rc = sysfs_path_prefix("light_sensor", (char *) &path); - if (rc < 0 || path[0] == '\0') { - ALOGE("%s: Unable to open sysfs", __func__); - goto error; - } - - snprintf(data->path_enable, PATH_MAX, "%s/enable", path); - snprintf(data->path_delay, PATH_MAX, "%s/poll_delay", path); - - handlers->poll_fd = input_fd; - handlers->data = (void *) data; - - return 0; - -error: - if (data != NULL) - free(data); - - if (input_fd >= 0) - close(input_fd); - - handlers->poll_fd = -1; - handlers->data = NULL; - - return -1; -} - -int bh1721_deinit(struct piranha_sensors_handlers *handlers) -{ - ALOGD("%s(%p)", __func__, handlers); - - if (handlers == NULL) - return -EINVAL; - - if (handlers->poll_fd >= 0) - close(handlers->poll_fd); - handlers->poll_fd = -1; - - if (handlers->data != NULL) - free(handlers->data); - handlers->data = NULL; - - return 0; -} - -int bh1721_activate(struct piranha_sensors_handlers *handlers) -{ - struct bh1721_data *data; - int rc; - - ALOGD("%s(%p)", __func__, handlers); - - if (handlers == NULL || handlers->data == NULL) - return -EINVAL; - - data = (struct bh1721_data *) handlers->data; - - rc = sysfs_value_write(data->path_enable, 1); - if (rc < 0) { - ALOGE("%s: Unable to write sysfs value", __func__); - return -1; - } - - handlers->activated = 1; - - return 0; -} - -int bh1721_deactivate(struct piranha_sensors_handlers *handlers) -{ - struct bh1721_data *data; - int rc; - - ALOGD("%s(%p)", __func__, handlers); - - if (handlers == NULL || handlers->data == NULL) - return -EINVAL; - - data = (struct bh1721_data *) handlers->data; - - rc = sysfs_value_write(data->path_enable, 0); - if (rc < 0) { - ALOGE("%s: Unable to write sysfs value", __func__); - return -1; - } - - handlers->activated = 1; - - return 0; -} - -int bh1721_set_delay(struct piranha_sensors_handlers *handlers, int64_t delay) -{ - struct bh1721_data *data; - int rc; - - ALOGD("%s(%p, %" PRId64 ")", __func__, handlers, delay); - - if (handlers == NULL || handlers->data == NULL) - return -EINVAL; - - data = (struct bh1721_data *) handlers->data; - - rc = sysfs_value_write(data->path_delay, delay); - if (rc < 0) { - ALOGE("%s: Unable to write sysfs value", __func__); - return -1; - } - - return 0; -} - -float bh1721_convert(int value) -{ - return value * 0.712f; -} - -int bh1721_get_data(struct piranha_sensors_handlers *handlers, - struct sensors_event_t *event) -{ - struct input_event input_event; - int input_fd; - int rc; - -// ALOGD("%s(%p, %p)", __func__, handlers, event); - - if (handlers == NULL || event == NULL) - return -EINVAL; - - input_fd = handlers->poll_fd; - if (input_fd < 0) - return -EINVAL; - - memset(event, 0, sizeof(struct sensors_event_t)); - event->version = sizeof(struct sensors_event_t); - event->sensor = handlers->handle; - event->type = handlers->handle; - - do { - rc = read(input_fd, &input_event, sizeof(input_event)); - if (rc < (int) sizeof(input_event)) - break; - - if (input_event.type == EV_REL) { - if (input_event.code == REL_MISC) - event->light = bh1721_convert(input_event.value); - } 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); - - return 0; -} - -struct piranha_sensors_handlers bh1721 = { - .name = "BH1721", - .handle = SENSOR_TYPE_LIGHT, - .init = bh1721_init, - .deinit = bh1721_deinit, - .activate = bh1721_activate, - .deactivate = bh1721_deactivate, - .set_delay = bh1721_set_delay, - .get_data = bh1721_get_data, - .activated = 0, - .needed = 0, - .poll_fd = -1, - .data = NULL, -}; |