diff options
Diffstat (limited to 'libsensors/smdk4x12_sensors.c')
| -rw-r--r-- | libsensors/smdk4x12_sensors.c | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/libsensors/smdk4x12_sensors.c b/libsensors/smdk4x12_sensors.c new file mode 100644 index 0000000..4cbc7c2 --- /dev/null +++ b/libsensors/smdk4x12_sensors.c @@ -0,0 +1,295 @@ +/* + * 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 <unistd.h> +#include <stdint.h> +#include <fcntl.h> +#include <errno.h> +#include <poll.h> +#include <sys/select.h> +#include <hardware/sensors.h> +#include <hardware/hardware.h> + +#define LOG_TAG "smdk4x12_sensors" +#include <utils/Log.h> + +#include "smdk4x12_sensors.h" + +/* + * Sensors list + */ + +struct sensor_t smdk4x12_sensors[] = { + { "LSM330DLC 3-Axis Accelerometer", "STMicroelectronics", 1, SENSOR_TYPE_ACCELEROMETER, + SENSOR_TYPE_ACCELEROMETER, 2 * GRAVITY_EARTH, 0.0096f, 0.23f, 10000, 0, 0, SENSOR_STRING_TYPE_ACCELEROMETER, 0, 0, + SENSOR_FLAG_CONTINUOUS_MODE, {}, }, + { "AKM8975C 3-Axis Magnetic Sensor", "Asahi Kasei", 1, SENSOR_TYPE_MAGNETIC_FIELD, + SENSOR_TYPE_MAGNETIC_FIELD, 2000.0f, 1.0f / 16, 6.8f, 10000, 0, 0, SENSOR_STRING_TYPE_MAGNETIC_FIELD, 0, 0, + SENSOR_FLAG_CONTINUOUS_MODE, {}, }, + { "CM36651 Light Sensor", "Capella", 1, SENSOR_TYPE_LIGHT, + SENSOR_TYPE_LIGHT, 121240.0f, 1.0f, 0.2f, 0, 0, 0, SENSOR_STRING_TYPE_LIGHT, 0, 0, + SENSOR_FLAG_ON_CHANGE_MODE, {}, }, + { "CM36651 Proximity Sensor", "Capella", 1, SENSOR_TYPE_PROXIMITY, + SENSOR_TYPE_PROXIMITY, 8.0f, 8.0f, 1.3f, 0, 0, 0, SENSOR_STRING_TYPE_PROXIMITY, 0, 0, + SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ON_CHANGE_MODE, {}, }, + { "LSM330DLC Gyroscope Sensor", "STMicroelectronics", 1, SENSOR_TYPE_GYROSCOPE, + SENSOR_TYPE_GYROSCOPE, 500.0f * (3.1415926535f / 180.0f), (70.0f / 4000.0f) * (3.1415926535f / 180.0f), 6.1f, 5000, 0, 0, SENSOR_STRING_TYPE_GYROSCOPE, 0, 0, + SENSOR_FLAG_CONTINUOUS_MODE, {}, }, + { "LPS331AP Pressure Sensor", "STMicroelectronics", 1, SENSOR_TYPE_PRESSURE, + SENSOR_TYPE_PRESSURE, 1260.0f, 1.0f / 4096, 0.045f, 40000, 0, 0, SENSOR_STRING_TYPE_PRESSURE, 0, 20000, + SENSOR_FLAG_CONTINUOUS_MODE, {}, }, +}; + +int smdk4x12_sensors_count = sizeof(smdk4x12_sensors) / sizeof(struct sensor_t); + +struct smdk4x12_sensors_handlers *smdk4x12_sensors_handlers[] = { + &lsm330dlc_acceleration, + &akm8975, + &cm36651_proximity, + &cm36651_light, + &lsm330dlc_gyroscope, + &lps331ap, +}; + +int smdk4x12_sensors_handlers_count = sizeof(smdk4x12_sensors_handlers) / + sizeof(struct smdk4x12_sensors_handlers *); + +/* + * SMDK4x12 Sensors + */ + +int smdk4x12_sensors_activate(struct sensors_poll_device_t *dev, int handle, + int enabled) +{ + struct smdk4x12_sensors_device *device; + int i; + + ALOGD("%s(%p, %d, %d)", __func__, dev, handle, enabled); + + if (dev == NULL) + return -EINVAL; + + device = (struct smdk4x12_sensors_device *) dev; + + if (device->handlers == NULL || device->handlers_count <= 0) + return -EINVAL; + + for (i = 0; i < device->handlers_count; i++) { + if (device->handlers[i] == NULL) + continue; + + if (device->handlers[i]->handle == handle) { + if (enabled && device->handlers[i]->activate != NULL) { + device->handlers[i]->needed |= SMDK4x12_SENSORS_NEEDED_API; + if (device->handlers[i]->needed == SMDK4x12_SENSORS_NEEDED_API) + return device->handlers[i]->activate(device->handlers[i]); + else + return 0; + } else if (!enabled && device->handlers[i]->deactivate != NULL) { + device->handlers[i]->needed &= ~SMDK4x12_SENSORS_NEEDED_API; + if (device->handlers[i]->needed == 0) + return device->handlers[i]->deactivate(device->handlers[i]); + else + return 0; + } + } + } + + return -1; +} + +int smdk4x12_sensors_set_delay(struct sensors_poll_device_t *dev, int handle, + int64_t ns) +{ + struct smdk4x12_sensors_device *device; + int i; + + ALOGD("%s(%p, %d, %" PRId64 ")", __func__, dev, handle, ns); + + if (dev == NULL) + return -EINVAL; + + device = (struct smdk4x12_sensors_device *) dev; + + if (device->handlers == NULL || device->handlers_count <= 0) + return -EINVAL; + + for (i = 0; i < device->handlers_count; i++) { + if (device->handlers[i] == NULL) + continue; + + if (device->handlers[i]->handle == handle && device->handlers[i]->set_delay != NULL) + return device->handlers[i]->set_delay(device->handlers[i], ns); + } + + return 0; +} + +int smdk4x12_sensors_poll(struct sensors_poll_device_t *dev, + struct sensors_event_t* data, int count) +{ + struct smdk4x12_sensors_device *device; + int i, j; + int c, n; + int poll_rc, rc; + +// ALOGD("%s(%p, %p, %d)", __func__, dev, data, count); + + if (dev == NULL) + return -EINVAL; + + device = (struct smdk4x12_sensors_device *) dev; + + if (device->handlers == NULL || device->handlers_count <= 0 || + device->poll_fds == NULL || device->poll_fds_count <= 0) + return -EINVAL; + + n = 0; + + do { + poll_rc = poll(device->poll_fds, device->poll_fds_count, n > 0 ? 0 : -1); + if (poll_rc < 0) + return -1; + + for (i = 0; i < device->poll_fds_count; i++) { + if (!(device->poll_fds[i].revents & POLLIN)) + continue; + + for (j = 0; j < device->handlers_count; j++) { + if (device->handlers[j] == NULL || device->handlers[j]->poll_fd != device->poll_fds[i].fd || device->handlers[j]->get_data == NULL) + continue; + + rc = device->handlers[j]->get_data(device->handlers[j], &data[n]); + if (rc < 0) { + device->poll_fds[i].revents = 0; + poll_rc = -1; + } else { + n++; + count--; + } + } + } + } while ((poll_rc > 0 || n < 1) && count > 0); + + return n; +} + +/* + * Interface + */ + +int smdk4x12_sensors_close(hw_device_t *device) +{ + struct smdk4x12_sensors_device *smdk4x12_sensors_device; + int i; + + ALOGD("%s(%p)", __func__, device); + + if (device == NULL) + return -EINVAL; + + smdk4x12_sensors_device = (struct smdk4x12_sensors_device *) device; + + if (smdk4x12_sensors_device->poll_fds != NULL) + free(smdk4x12_sensors_device->poll_fds); + + for (i = 0; i < smdk4x12_sensors_device->handlers_count; i++) { + if (smdk4x12_sensors_device->handlers[i] == NULL || smdk4x12_sensors_device->handlers[i]->deinit == NULL) + continue; + + smdk4x12_sensors_device->handlers[i]->deinit(smdk4x12_sensors_device->handlers[i]); + } + + free(device); + + return 0; +} + +int smdk4x12_sensors_open(const struct hw_module_t* module, const char *id, + struct hw_device_t** device) +{ + struct smdk4x12_sensors_device *smdk4x12_sensors_device; + int p, i; + + ALOGD("%s(%p, %s, %p)", __func__, module, id, device); + + if (module == NULL || device == NULL) + return -EINVAL; + + smdk4x12_sensors_device = (struct smdk4x12_sensors_device *) + calloc(1, sizeof(struct smdk4x12_sensors_device)); + smdk4x12_sensors_device->device.common.tag = HARDWARE_DEVICE_TAG; + smdk4x12_sensors_device->device.common.version = 0; + smdk4x12_sensors_device->device.common.module = (struct hw_module_t *) module; + smdk4x12_sensors_device->device.common.close = smdk4x12_sensors_close; + smdk4x12_sensors_device->device.activate = smdk4x12_sensors_activate; + smdk4x12_sensors_device->device.setDelay = smdk4x12_sensors_set_delay; + smdk4x12_sensors_device->device.poll = smdk4x12_sensors_poll; + smdk4x12_sensors_device->handlers = smdk4x12_sensors_handlers; + smdk4x12_sensors_device->handlers_count = smdk4x12_sensors_handlers_count; + smdk4x12_sensors_device->poll_fds = (struct pollfd *) + calloc(1, smdk4x12_sensors_handlers_count * sizeof(struct pollfd)); + + p = 0; + for (i = 0; i < smdk4x12_sensors_handlers_count; i++) { + if (smdk4x12_sensors_handlers[i] == NULL || smdk4x12_sensors_handlers[i]->init == NULL) + continue; + + smdk4x12_sensors_handlers[i]->init(smdk4x12_sensors_handlers[i], smdk4x12_sensors_device); + if (smdk4x12_sensors_handlers[i]->poll_fd >= 0) { + smdk4x12_sensors_device->poll_fds[p].fd = smdk4x12_sensors_handlers[i]->poll_fd; + smdk4x12_sensors_device->poll_fds[p].events = POLLIN; + p++; + } + } + + smdk4x12_sensors_device->poll_fds_count = p; + + *device = &(smdk4x12_sensors_device->device.common); + + return 0; +} + +int smdk4x12_sensors_get_sensors_list(struct sensors_module_t* module, + const struct sensor_t **sensors_p) +{ + ALOGD("%s(%p, %p)", __func__, module, sensors_p); + + if (sensors_p == NULL) + return -EINVAL; + + *sensors_p = smdk4x12_sensors; + return smdk4x12_sensors_count; +} + +struct hw_module_methods_t smdk4x12_sensors_module_methods = { + .open = smdk4x12_sensors_open, +}; + +struct sensors_module_t HAL_MODULE_INFO_SYM = { + .common = { + .tag = HARDWARE_MODULE_TAG, + .version_major = 1, + .version_minor = 0, + .id = SENSORS_HARDWARE_MODULE_ID, + .name = "SMDK4x12 Sensors", + .author = "Paul Kocialkowski", + .methods = &smdk4x12_sensors_module_methods, + }, + .get_sensors_list = smdk4x12_sensors_get_sensors_list, +}; |