1 files changed, 292 insertions, 0 deletions
diff --git a/sensors/smdk4x12_sensors.c b/sensors/smdk4x12_sensors.c
new file mode 100644
index 0000000..e6f4500
--- /dev/null
+++ b/sensors/smdk4x12_sensors.c
@@ -0,0 +1,292 @@
+/*
+ * 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 Acceleration Sensor", "STMicroelectronics", 1, SENSOR_TYPE_ACCELEROMETER,
+		SENSOR_TYPE_ACCELEROMETER, 2 * GRAVITY_EARTH, 0.0096f, 0.23f, 10000, {}, },
+	{ "AKM8975 Magnetic Sensor", "Asahi Kasei Microdevices", 1, SENSOR_TYPE_MAGNETIC_FIELD,
+		SENSOR_TYPE_MAGNETIC_FIELD, 2000.0f, 1.0f / 16, 6.8f, 10000, {}, },
+	{ "Orientation Sensor", "SMDK4x12 Sensors", 1, SENSOR_TYPE_ORIENTATION,
+		SENSOR_TYPE_ORIENTATION, 360.0f, 0.1f, 0.0f, 10000, {}, },
+	{ "CM36651 Light Sensor", "Capella Microsystems", 1, SENSOR_TYPE_LIGHT,
+		SENSOR_TYPE_LIGHT, 121240.0f, 1.0f, 0.2f, 0, {}, },
+	{ "CM36651 Proximity Sensor", "Capella Microsystems", 1, SENSOR_TYPE_PROXIMITY,
+		SENSOR_TYPE_PROXIMITY, 6.0f, 6.0f, 1.3f, 0, {}, },
+	{ "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, {}, },
+	{ "LPS331AP Pressure Sensor", "STMicroelectronics", 1, SENSOR_TYPE_PRESSURE,
+		SENSOR_TYPE_PRESSURE, 1260.0f, 1.0f / 4096, 0.045f, 40000, {}, },
+};
+
+int smdk4x12_sensors_count = sizeof(smdk4x12_sensors) / sizeof(struct sensor_t);
+
+struct smdk4x12_sensors_handlers *smdk4x12_sensors_handlers[] = {
+	&lsm330dlc_acceleration,
+	&akm8975,
+	&orientation,
+	&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, %ld)", __func__, dev, handle, (long int) 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], (long int) 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,
+};