SMDK4x12 Sensors

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

13 files changed, 3375 insertions, 0 deletions

diff --git a/sensors/Android.mk b/sensors/Android.mk
new file mode 100644
index 0000000..ab30bf0
--- /dev/null
+++ b/sensors/Android.mk
@@ -0,0 +1,42 @@
+# Copyright (C) 2013-2014 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/>.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+	smdk4x12_sensors.c \
+	input.c \
+	orientation.c \
+	ssp.c \
+	akm8963.c \
+	cm36651_proximity.c \
+	cm36651_light.c \
+	lsm330dlc_acceleration.c \
+	lsm330dlc_gyroscope.c \
+	bmp180.c
+
+LOCAL_C_INCLUDES := \
+	$(LOCAL_PATH)
+
+LOCAL_SHARED_LIBRARIES := libutils libcutils liblog libhardware
+LOCAL_PRELINK_MODULE := false
+
+LOCAL_MODULE := sensors.smdk4x12
+LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/hw
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/sensors/akm8963.c b/sensors/akm8963.c
new file mode 100644
index 0000000..96d35ca
--- /dev/null
+++ b/sensors/akm8963.c
@@ -0,0 +1,683 @@
+/*
+ * Copyright (C) 2014 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 <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+#define AKM8963_CONFIG_PATH			"/data/misc/akmd_set.txt"
+
+struct akm8963_data {
+	struct smdk4x12_sensors_handlers *orientation_sensor;
+
+	sensors_vec_t magnetic;
+	unsigned short magnetic_data[4][3];
+	int magnetic_data_count;
+	int magnetic_data_index;
+
+	unsigned short magnetic_extrema[2][3];
+	unsigned char asa[3];
+	int ho[3];
+
+	long int delay;
+	int device_fd;
+	int uinput_fd;
+
+	pthread_t thread;
+	pthread_mutex_t mutex;
+	int thread_continue;
+};
+
+// This AKM8963 implementation is based on intuitive understanding of how the
+// AKM8963 data is translated to SI units.
+//
+// The raw data is a two-byte short value that is the 16 bit ADC read value.
+// This value has to be corrected using the ASA Sensivity Adujstment value
+// as such: v_adj = v * (((ASA - 128) * 0.5) / 128 + 1)
+// LSB values can then be converted to uT units, with 0.15uT/LSB:
+// m = 0.15 * v * (((ASA - 128) * 0.5) / 128 + 1)
+//
+// Moreover, we calculate and apply a software offset (HO) in order to have the
+// maximum final values for each axis at ~45uT and minimum at ~-45uT.
+// In order to store HO as an integer, the applied offset is 0.06 * HO:
+// m = 0.15 * v * (((ASA - 128) * 0.5) / 128 + 1) - 0.06 * HO
+
+
+int akm8963_magnetic_extrema(struct akm8963_data *data, int index)
+{
+	if (data == NULL || index < 0 || index >= 3)
+		return -EINVAL;
+
+	// Calculate the extrema from HO (software offset)
+	data->magnetic_extrema[0][index] = (unsigned short) ((-45.0f + 0.06 * data->ho[index]) / (0.15f * (((data->asa[index] - 128) * 0.5f) / 128 + 1)));
+	data->magnetic_extrema[1][index] = (unsigned short) ((45.0f + 0.06 * data->ho[index]) / (0.15f * (((data->asa[index] - 128) * 0.5f) / 128 + 1)));
+
+	return 0;
+}
+
+int akm8963_config_read(struct akm8963_data *data)
+{
+	char buffer[256] = { 0 };
+	int config_fd = -1;
+	int offset = 0;
+	int length;
+	int count;
+	int value;
+	char *p;
+	int rc;
+
+	if (data == NULL)
+		return -EINVAL;
+
+	config_fd = open(AKM8963_CONFIG_PATH, O_RDONLY);
+	if (config_fd < 0) {
+		ALOGE("%s: Unable to open akm8963 config %d %s", __func__, errno, strerror(errno));
+		goto error;
+	}
+
+	rc = 0;
+
+	do {
+		lseek(config_fd, offset, SEEK_SET);
+
+		length = read(config_fd, buffer, sizeof(buffer));
+		if (length <= 0)
+			break;
+
+		p = strchr((const char *) &buffer, '\n');
+		if (p != NULL) {
+			offset += (int) p - (int) buffer + 1;
+			*p = '\0';
+		} else if ((size_t) length < sizeof(buffer)) {
+			buffer[length] = '\0';
+		}
+
+		count = sscanf((char const *) &buffer, "HSUC_HO_FORM0.x = %d", &value);
+		if (count == 1) {
+			data->ho[0] = value;
+			rc |= akm8963_magnetic_extrema(data, 0);
+		}
+
+		count = sscanf((char const *) &buffer, "HSUC_HO_FORM0.y = %d", &value);
+		if (count == 1) {
+			data->ho[1] = value;
+			rc |= akm8963_magnetic_extrema(data, 1);
+		}
+
+		count = sscanf((char const *) &buffer, "HSUC_HO_FORM0.z = %d", &value);
+		if (count == 1) {
+			data->ho[2] = value;
+			rc |= akm8963_magnetic_extrema(data, 2);
+		}
+	} while (p != NULL && length > 0);
+
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	if (config_fd >= 0)
+		close(config_fd);
+
+	return rc;
+}
+
+int akm8963_config_write(struct akm8963_data *data)
+{
+	char buffer[256] = { 0 };
+	int config_fd = -1;
+	int length;
+	int value;
+	int rc;
+
+	if (data == NULL)
+		return -EINVAL;
+
+	config_fd = open(AKM8963_CONFIG_PATH, O_WRONLY | O_TRUNC | O_CREAT, 0664);
+	if (config_fd < 0) {
+		ALOGE("%s: Unable to open akm8963 config", __func__);
+		goto error;
+	}
+
+	value = (int) data->ho[0];
+	length = snprintf((char *) &buffer, sizeof(buffer), "HSUC_HO_FORM0.x = %d\n", value);
+
+	rc = write(config_fd, buffer, length);
+	if (rc < length) {
+		ALOGE("%s: Unable to write akm8963 config", __func__);
+		goto error;
+	}
+
+	value = (int) data->ho[1];
+	length = snprintf((char *) &buffer, sizeof(buffer), "HSUC_HO_FORM0.y = %d\n", value);
+
+	rc = write(config_fd, buffer, length);
+	if (rc < length) {
+		ALOGE("%s: Unable to write akm8963 config", __func__);
+		goto error;
+	}
+
+	value = (int) data->ho[2];
+	length = snprintf((char *) &buffer, sizeof(buffer), "HSUC_HO_FORM0.z = %d\n", value);
+
+	rc = write(config_fd, buffer, length);
+	if (rc < length) {
+		ALOGE("%s: Unable to write akm8963 config", __func__);
+		goto error;
+	}
+
+	rc = 0;
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	if (config_fd >= 0)
+		close(config_fd);
+
+	return rc;
+}
+
+int akm8963_ho_calibration(struct akm8963_data *data,
+	unsigned short *magnetic_data, size_t magnetic_data_size)
+{
+	float ho[2];
+	int gain_index;
+	int i;
+
+	if (data == NULL || magnetic_data == NULL || magnetic_data_size < 3)
+		return -EINVAL;
+
+	// Update the extrema from the current raw magnetic data
+	for (i = 0; i < 3; i++) {
+		if (magnetic_data[i] < data->magnetic_extrema[0][i] || data->magnetic_extrema[0][i] == 0)
+			data->magnetic_extrema[0][i] = magnetic_data[i];
+		if (magnetic_data[i] > data->magnetic_extrema[1][i] || data->magnetic_extrema[1][i] == 0)
+			data->magnetic_extrema[1][i] = magnetic_data[i];
+	}
+
+	// Calculate HO (software offset)
+	if (data->magnetic_data_count % 10 == 0) {
+		for (i = 0; i < 3; i++) {
+			// Calculate offset for minimum to be at -45uT
+			ho[0] = (0.15f * (((data->asa[i] - 128) * 0.5f) / 128 + 1) * data->magnetic_extrema[0][i] + 45.0f) / 0.06f;
+			// Calculate offset for maximum to be at +45uT
+			ho[1] = (0.15f * (((data->asa[i] - 128) * 0.5f) / 128 + 1) * data->magnetic_extrema[1][i] - 45.0f) / 0.06f;
+			// Average offset to make everyone (mostly) happy
+			data->ho[i] = (int) (ho[0] + ho[1]) / 2.0f;
+		}
+	}
+
+	return 0;
+}
+
+int akm8963_magnetic_axis(struct akm8963_data *data, int index, float *axis)
+{
+	float value;
+	int count;
+	int i;
+
+	if (data == NULL || axis == NULL || index < 0 || index >= 3)
+		return -EINVAL;
+
+	count = data->magnetic_data_count >= 4 ? 4 : data->magnetic_data_count;
+	value = 0;
+
+	// Average the last 4 (or less) raw magnetic values
+	for (i = 0; i < count; i++)
+		value += (float) data->magnetic_data[i][index];
+	value /= count;
+
+	// Adjust sensitivity using ASA value
+	value *= (((data->asa[index] - 128) * 0.5f) / 128 + 1);
+
+	// Magnetic field value in uT from corrected value and HO offset
+	*axis = 0.15f * value - 0.06f * data->ho[index];
+
+	return 0;
+}
+
+int akm8963_magnetic(struct akm8963_data *data)
+{
+	int rc;
+
+	if (data == NULL)
+		return -EINVAL;
+
+	rc = 0;
+	rc |= akm8963_magnetic_axis(data, 0, &data->magnetic.x);
+	rc |= akm8963_magnetic_axis(data, 1, &data->magnetic.y);
+	rc |= akm8963_magnetic_axis(data, 2, &data->magnetic.z);
+
+	return rc;
+}
+
+void *akm8963_thread(void *thread_data)
+{
+	struct smdk4x12_sensors_handlers *handlers = NULL;
+	struct akm8963_data *data = NULL;
+	struct input_event event;
+	struct timeval time;
+	unsigned char i2c_data[8] = { 0 };
+	unsigned short magnetic_data[3] = { 0 };
+	int index;
+	long int before, after;
+	int diff;
+	int device_fd;
+	int uinput_fd;
+	int rc;
+
+	if (thread_data == NULL)
+		return NULL;
+
+	handlers = (struct smdk4x12_sensors_handlers *) thread_data;
+	if (handlers->data == NULL)
+		return NULL;
+
+	data = (struct akm8963_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);
+
+			memset(&i2c_data, 0, sizeof(i2c_data));
+			rc = ioctl(device_fd, ECS_IOCTL_GET_MAGDATA, &i2c_data);
+			if (rc < 0) {
+				ALOGE("%s: Unable to get akm8963 data", __func__);
+				goto next;
+			}
+
+			if (!(i2c_data[0] & 0x01)) {
+				ALOGE("%s: akm8963 data is not ready", __func__);
+				goto next;
+			}
+
+			magnetic_data[0] = (unsigned short) ((i2c_data[2] << 8) | (i2c_data[1] & 0xff));
+			magnetic_data[1] = (unsigned short) ((i2c_data[4] << 8) | (i2c_data[3] & 0xff));
+			magnetic_data[2] = (unsigned short) ((i2c_data[6] << 8) | (i2c_data[5] & 0xff));
+
+			index = data->magnetic_data_index;
+
+			data->magnetic_data[index][0] = magnetic_data[0];
+			data->magnetic_data[index][1] = magnetic_data[1];
+			data->magnetic_data[index][2] = magnetic_data[2];
+
+			data->magnetic_data_index = (index + 1) % 4;
+			data->magnetic_data_count++;
+
+			rc = akm8963_ho_calibration(data, (unsigned short *) &magnetic_data, sizeof(magnetic_data));
+			if (rc < 0) {
+				ALOGE("%s: Unable to calibrate akm8963 HO", __func__);
+				goto next;
+			}
+
+			rc = akm8963_magnetic(data);
+			if (rc < 0) {
+				ALOGE("%s: Unable to get akm8963 magnetic", __func__);
+				goto next;
+			}
+
+			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));
+
+next:
+			gettimeofday(&time, NULL);
+			after = timestamp(&time);
+
+			diff = (int) (data->delay - (after - before)) / 1000;
+			if (diff <= 0)
+				continue;
+
+			usleep(diff);
+		}
+	}
+	return NULL;
+}
+
+int akm8963_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct akm8963_data *data = NULL;
+	pthread_attr_t thread_attr;
+	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 || device == NULL)
+		return -EINVAL;
+
+	data = (struct akm8963_data *) calloc(1, sizeof(struct akm8963_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/akm8963", O_RDONLY);
+	if (device_fd < 0) {
+		ALOGE("%s: Unable to open device", __func__);
+		goto error;
+	}
+
+	rc = ioctl(device_fd, ECS_IOCTL_GET_FUSEROMDATA, &data->asa);
+	if (rc < 0) {
+		ALOGE("%s: Unable to get akm8963 FUSE ROM data", __func__);
+		goto error;
+	}
+
+	ALOGD("AKM8963 ASA (Sensitivity Adjustment) values are: (%d, %d, %d)",
+		data->asa[0], data->asa[1], data->asa[2]);
+
+	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, akm8963_thread, (void *) handlers);
+	if (rc < 0) {
+		ALOGE("%s: Unable to create akm8963 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 akm8963_deinit(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct akm8963_data *data = NULL;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct akm8963_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;
+
+	if (data->device_fd >= 0)
+		close(data->device_fd);
+	data->device_fd = -1;
+
+	free(handlers->data);
+	handlers->data = NULL;
+
+	return 0;
+}
+
+int akm8963_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct akm8963_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct akm8963_data *) handlers->data;
+
+	rc = akm8963_config_read(data);
+	if (rc < 0) {
+		ALOGE("%s: Unable to read akm8963 config", __func__);
+	}
+
+	rc = ssp_sensor_enable(GEOMAGNETIC_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+	pthread_mutex_unlock(&data->mutex);
+
+	return 0;
+}
+
+int akm8963_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct akm8963_data *data;
+	int empty;
+	int rc;
+	int i;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct akm8963_data *) handlers->data;
+
+	empty = 1;
+
+	for (i = 0; i < (ssize_t) (sizeof(data->magnetic_extrema) / (sizeof(short) * 2)); i++) {
+		if (data->magnetic_extrema[0][i] != 0 || data->magnetic_extrema[1][i] != 0) {
+			empty = 0;
+			break;
+		}
+	}
+
+	if (!empty) {
+		rc = akm8963_config_write(data);
+		if (rc < 0)
+			ALOGE("%s: Unable to write akm8963 config", __func__);
+	}
+
+	rc = ssp_sensor_disable(GEOMAGNETIC_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 0;
+
+	return 0;
+}
+
+int akm8963_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct akm8963_data *data;
+	char path_delay[PATH_MAX] = "/sys/class/sensors/ssp_sensor/mag_poll_delay";
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct akm8963_data *) handlers->data;
+
+	rc = sysfs_value_write(path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	data->delay = delay;
+
+	return 0;
+}
+
+float akm8963_convert(int value)
+{
+	return (float) value / 1000.0f;
+}
+
+int akm8963_get_data(struct smdk4x12_sensors_handlers *handlers,
+	struct sensors_event_t *event)
+{
+	struct akm8963_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 akm8963_data *) handlers->data;
+
+	input_fd = handlers->poll_fd;
+	if (input_fd < 0)
+		return -1;
+
+	memset(event, 0, sizeof(struct sensors_event_t));
+	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 = akm8963_convert(input_event.value);
+					break;
+				case REL_Y:
+					event->magnetic.y = akm8963_convert(input_event.value);
+					break;
+				case REL_Z:
+					event->magnetic.z = akm8963_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 smdk4x12_sensors_handlers akm8963 = {
+	.name = "AKM8963",
+	.handle = SENSOR_TYPE_MAGNETIC_FIELD,
+	.init = akm8963_init,
+	.deinit = akm8963_deinit,
+	.activate = akm8963_activate,
+	.deactivate = akm8963_deactivate,
+	.set_delay = akm8963_set_delay,
+	.get_data = akm8963_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/bmp180.c b/sensors/bmp180.c
new file mode 100644
index 0000000..c50474c
--- /dev/null
+++ b/sensors/bmp180.c
@@ -0,0 +1,238 @@
+/*
+ * 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 <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 "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+struct bmp180_data {
+	char path_delay[PATH_MAX];
+};
+
+int bmp180_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct bmp180_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 bmp180_data *) calloc(1, sizeof(struct bmp180_data));
+
+	input_fd = input_open("pressure_sensor");
+	if (input_fd < 0) {
+		ALOGE("%s: Unable to open input", __func__);
+		goto error;
+	}
+
+	rc = sysfs_path_prefix("pressure_sensor", (char *) &path);
+	if (rc < 0 || path[0] == '\0') {
+		ALOGE("%s: Unable to open sysfs", __func__);
+		goto error;
+	}
+
+	snprintf(data->path_delay, PATH_MAX, "%s/pressure_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 bmp180_deinit(struct smdk4x12_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 bmp180_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct bmp180_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct bmp180_data *) handlers->data;
+
+	rc = ssp_sensor_enable(PRESSURE_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int bmp180_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct bmp180_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct bmp180_data *) handlers->data;
+
+	rc = ssp_sensor_disable(PRESSURE_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int bmp180_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct bmp180_data *data;
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct bmp180_data *) handlers->data;
+
+	rc = sysfs_value_write(data->path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+float bmp180_convert(int value)
+{
+	return value / 100.0f;
+}
+
+int bmp180_get_data(struct smdk4x12_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) {
+			switch (input_event.code) {
+				case REL_HWHEEL:
+					event->pressure = bmp180_convert(input_event.value);
+					break;
+				default:
+					continue;
+			}
+		} else if (input_event.type == EV_SYN) {
+			if (input_event.code == SYN_REPORT && event->pressure != 0) {
+				event->timestamp = input_timestamp(&input_event);
+				break;
+			} else {
+				return -1;
+			}
+		}
+	} while (1);
+
+	return 0;
+}
+
+struct smdk4x12_sensors_handlers bmp180 = {
+	.name = "BMP180",
+	.handle = SENSOR_TYPE_PRESSURE,
+	.init = bmp180_init,
+	.deinit = bmp180_deinit,
+	.activate = bmp180_activate,
+	.deactivate = bmp180_deactivate,
+	.set_delay = bmp180_set_delay,
+	.get_data = bmp180_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/cm36651_light.c b/sensors/cm36651_light.c
new file mode 100644
index 0000000..421a276
--- /dev/null
+++ b/sensors/cm36651_light.c
@@ -0,0 +1,229 @@
+/*
+ * 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 <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 "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+struct cm36651_light_data {
+	char path_delay[PATH_MAX];
+};
+
+int cm36651_light_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct cm36651_light_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 cm36651_light_data *) calloc(1, sizeof(struct cm36651_light_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_delay, PATH_MAX, "%s/light_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 cm36651_light_deinit(struct smdk4x12_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 cm36651_light_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct cm36651_light_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_light_data *) handlers->data;
+
+	rc = ssp_sensor_enable(LIGHT_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int cm36651_light_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct cm36651_light_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_light_data *) handlers->data;
+
+	rc = ssp_sensor_disable(LIGHT_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int cm36651_light_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct cm36651_light_data *data;
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_light_data *) handlers->data;
+
+	rc = sysfs_value_write(data->path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+float cm36651_light_convert(int value)
+{
+	return (float) value * 1.7f - 0.5f;
+}
+
+int cm36651_light_get_data(struct smdk4x12_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 = cm36651_light_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 smdk4x12_sensors_handlers cm36651_light = {
+	.name = "CM36651 Light",
+	.handle = SENSOR_TYPE_LIGHT,
+	.init = cm36651_light_init,
+	.deinit = cm36651_light_deinit,
+	.activate = cm36651_light_activate,
+	.deactivate = cm36651_light_deactivate,
+	.set_delay = cm36651_light_set_delay,
+	.get_data = cm36651_light_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/cm36651_proximity.c b/sensors/cm36651_proximity.c
new file mode 100644
index 0000000..108f00b
--- /dev/null
+++ b/sensors/cm36651_proximity.c
@@ -0,0 +1,228 @@
+/*
+ * 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 <sys/types.h>
+#include <linux/ioctl.h>
+#include <linux/input.h>
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+struct cm36651_proximity_data {
+	char path_delay[PATH_MAX];
+};
+
+int cm36651_proximity_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct cm36651_proximity_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 cm36651_proximity_data *) calloc(1, sizeof(struct cm36651_proximity_data));
+
+	input_fd = input_open("proximity_sensor");
+	if (input_fd < 0) {
+		ALOGE("%s: Unable to open input", __func__);
+		goto error;
+	}
+
+	rc = sysfs_path_prefix("proximity_sensor", (char *) &path);
+	if (rc < 0 || path[0] == '\0') {
+		ALOGE("%s: Unable to open sysfs", __func__);
+		goto error;
+	}
+
+	snprintf(data->path_delay, PATH_MAX, "%s/prox_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 cm36651_proximity_deinit(struct smdk4x12_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 cm36651_proximity_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct cm36651_proximity_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_proximity_data *) handlers->data;
+
+	rc = ssp_sensor_enable(PROXIMITY_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int cm36651_proximity_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct cm36651_proximity_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_proximity_data *) handlers->data;
+
+	rc = ssp_sensor_disable(PROXIMITY_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int cm36651_proximity_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct cm36651_proximity_data *data;
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct cm36651_proximity_data *) handlers->data;
+
+	rc = sysfs_value_write(data->path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+float cm36651_proximity_convert(int value)
+{
+	return (float) value * 6.0f;
+}
+
+int cm36651_proximity_get_data(struct smdk4x12_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_ABS) {
+			if (input_event.code == ABS_DISTANCE)
+				event->distance = cm36651_proximity_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 smdk4x12_sensors_handlers cm36651_proximity = {
+	.name = "CM36651 Proximity",
+	.handle = SENSOR_TYPE_PROXIMITY,
+	.init = cm36651_proximity_init,
+	.deinit = cm36651_proximity_deinit,
+	.activate = cm36651_proximity_activate,
+	.deactivate = cm36651_proximity_deactivate,
+	.set_delay = cm36651_proximity_set_delay,
+	.get_data = cm36651_proximity_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/input.c b/sensors/input.c
new file mode 100644
index 0000000..5199b28
--- /dev/null
+++ b/sensors/input.c
@@ -0,0 +1,340 @@
+/*
+ * 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 <dirent.h>
+#include <linux/ioctl.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+
+void input_event_set(struct input_event *event, int type, int code, int value)
+{
+	if (event == NULL)
+		return;
+
+	memset(event, 0, sizeof(struct input_event));
+
+	event->type = type,
+	event->code = code;
+	event->value = value;
+
+	gettimeofday(&event->time, NULL);
+}
+
+long int timestamp(struct timeval *time)
+{
+	if (time == NULL)
+		return -1;
+
+	return time->tv_sec * 1000000000LL + time->tv_usec * 1000;
+}
+
+long int input_timestamp(struct input_event *event)
+{
+	if (event == NULL)
+		return -1;
+
+	return timestamp(&event->time);
+}
+
+int uinput_rel_create(const char *name)
+{
+	struct uinput_user_dev uinput_dev;
+	int uinput_fd;
+	int rc;
+
+	if (name == NULL)
+		return -1;
+
+	uinput_fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
+	if (uinput_fd < 0) {
+		ALOGE("%s: Unable to open uinput device", __func__);
+		goto error;
+	}
+
+	memset(&uinput_dev, 0, sizeof(uinput_dev));
+
+	strncpy(uinput_dev.name, name, sizeof(uinput_dev.name));
+	uinput_dev.id.bustype	= BUS_I2C;
+	uinput_dev.id.vendor	= 0;
+	uinput_dev.id.product	= 0;
+	uinput_dev.id.version	= 0;
+
+	rc = 0;
+	rc |= ioctl(uinput_fd, UI_SET_EVBIT, EV_REL);
+	rc |= ioctl(uinput_fd, UI_SET_RELBIT, REL_X);
+	rc |= ioctl(uinput_fd, UI_SET_RELBIT, REL_Y);
+	rc |= ioctl(uinput_fd, UI_SET_RELBIT, REL_Z);
+	rc |= ioctl(uinput_fd, UI_SET_EVBIT, EV_SYN);
+
+	if (rc < 0) {
+		ALOGE("%s: Unable to set uinput bits", __func__);
+		goto error;
+	}
+
+	rc = write(uinput_fd, &uinput_dev, sizeof(uinput_dev));
+	if (rc < 0) {
+		ALOGE("%s: Unable to write uinput device", __func__);
+		goto error;
+	}
+
+	rc = ioctl(uinput_fd, UI_DEV_CREATE);
+	if (rc < 0) {
+		ALOGE("%s: Unable to create uinput device", __func__);
+		goto error;
+	}
+
+	usleep(3000);
+
+	return uinput_fd;
+
+error:
+	if (uinput_fd >= 0)
+		close(uinput_fd);
+
+	return -1;
+}
+
+void uinput_destroy(int uinput_fd)
+{
+	if (uinput_fd < 0)
+		return;
+
+	ioctl(uinput_fd, UI_DEV_DESTROY);
+}
+
+int input_open(char *name)
+{
+	DIR *d;
+	struct dirent *di;
+
+	char input_name[80] = { 0 };
+	char path[PATH_MAX];
+	char *c;
+	int fd;
+	int rc;
+
+	if (name == NULL)
+		return -EINVAL;
+
+	d = opendir("/dev/input");
+	if (d == NULL)
+		return -1;
+
+	while ((di = readdir(d))) {
+		if (di == NULL || strcmp(di->d_name, ".") == 0 || strcmp(di->d_name, "..") == 0)
+			continue;
+
+		snprintf(path, PATH_MAX, "/dev/input/%s", di->d_name);
+		fd = open(path, O_RDONLY | O_NONBLOCK);
+		if (fd < 0)
+			continue;
+
+		rc = ioctl(fd, EVIOCGNAME(sizeof(input_name) - 1), &input_name);
+		if (rc < 0)
+			continue;
+
+		c = strstr((char *) &input_name, "\n");
+		if (c != NULL)
+			*c = '\0';
+
+		if (strcmp(input_name, name) == 0)
+			return fd;
+		else
+			close(fd);
+	}
+
+	return -1;
+}
+
+int sysfs_path_prefix(char *name, char *path_prefix)
+{
+	DIR *d;
+	struct dirent *di;
+
+	char input_name[80] = { 0 };
+	char path[PATH_MAX];
+	char *c;
+	int fd;
+
+	if (name == NULL || path_prefix == NULL)
+		return -EINVAL;
+
+	d = opendir("/sys/class/input");
+	if (d == NULL)
+		return -1;
+
+	while ((di = readdir(d))) {
+		if (di == NULL || strcmp(di->d_name, ".") == 0 || strcmp(di->d_name, "..") == 0)
+			continue;
+
+		snprintf(path, PATH_MAX, "/sys/class/input/%s/name", di->d_name);
+
+		fd = open(path, O_RDONLY);
+		if (fd < 0)
+			continue;
+
+		read(fd, &input_name, sizeof(input_name));
+		close(fd);
+
+		c = strstr((char *) &input_name, "\n");
+		if (c != NULL)
+			*c = '\0';
+
+		if (strcmp(input_name, name) == 0) {
+			snprintf(path_prefix, PATH_MAX, "/sys/class/input/%s", di->d_name);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+int sysfs_value_read(char *path)
+{
+	char buffer[100];
+	int value;
+	int fd = -1;
+	int rc;
+	int i;
+
+	if (path == NULL)
+		return -1;
+
+	fd = open(path, O_RDONLY);
+	if (fd < 0)
+		goto error;
+
+	rc = read(fd, &buffer, sizeof(buffer));
+	if (rc <= 0)
+		goto error;
+
+	i = 0;
+	while (buffer[i] == ' ' || buffer[i] == '\t')
+		i++;
+
+	value = atoi(&buffer[i]);
+	goto complete;
+
+error:
+	value = -1;
+
+complete:
+	if (fd >= 0)
+		close(fd);
+
+	return value;
+}
+
+int sysfs_value_write(char *path, int value)
+{
+	char buffer[100];
+	int fd = -1;
+	int rc;
+
+	if (path == NULL)
+		return -1;
+
+	fd = open(path, O_WRONLY);
+	if (fd < 0)
+		goto error;
+
+	snprintf((char *) &buffer, sizeof(buffer), "%d\n", value);
+
+	rc = write(fd, buffer, strlen(buffer));
+	if (rc < (int) strlen(buffer))
+		goto error;
+
+	rc = 0;
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	if (fd >= 0)
+		close(fd);
+
+	return rc;
+}
+
+int sysfs_string_read(char *path, char *buffer, size_t length)
+{
+	int fd = -1;
+	int rc;
+
+	if (path == NULL || buffer == NULL || length == 0)
+		return -1;
+
+	fd = open(path, O_RDONLY);
+	if (fd < 0)
+		goto error;
+
+	rc = read(fd, buffer, length);
+	if (rc <= 0)
+		goto error;
+
+	rc = 0;
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	if (fd >= 0)
+		close(fd);
+
+	return rc;
+}
+
+int sysfs_string_write(char *path, char *buffer, size_t length)
+{
+	int fd = -1;
+	int rc;
+
+	if (path == NULL || buffer == NULL || length == 0)
+		return -1;
+
+	fd = open(path, O_WRONLY);
+	if (fd < 0)
+		goto error;
+
+	rc = write(fd, buffer, length);
+	if (rc <= 0)
+		goto error;
+
+	rc = 0;
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	if (fd >= 0)
+		close(fd);
+
+	return rc;
+}
diff --git a/sensors/lsm330dlc_acceleration.c b/sensors/lsm330dlc_acceleration.c
new file mode 100644
index 0000000..efb0388
--- /dev/null
+++ b/sensors/lsm330dlc_acceleration.c
@@ -0,0 +1,265 @@
+/*
+ * 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 <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+struct lsm330dlc_acceleration_data {
+	struct smdk4x12_sensors_handlers *orientation_sensor;
+
+	char path_delay[PATH_MAX];
+
+	sensors_vec_t acceleration;
+};
+
+int lsm330dlc_acceleration_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct lsm330dlc_acceleration_data *data = NULL;
+	char path[PATH_MAX] = { 0 };
+	int input_fd = -1;
+	int rc;
+	int i;
+
+	ALOGD("%s(%p, %p)", __func__, handlers, device);
+
+	if (handlers == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_acceleration_data *) calloc(1, sizeof(struct lsm330dlc_acceleration_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];
+	}
+
+	input_fd = input_open("accelerometer_sensor");
+	if (input_fd < 0) {
+		ALOGE("%s: Unable to open input", __func__);
+		goto error;
+	}
+
+	rc = sysfs_path_prefix("accelerometer_sensor", (char *) &path);
+	if (rc < 0 || path[0] == '\0') {
+		ALOGE("%s: Unable to open sysfs", __func__);
+		goto error;
+	}
+
+	snprintf(data->path_delay, PATH_MAX, "%s/acc_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 lsm330dlc_acceleration_deinit(struct smdk4x12_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 lsm330dlc_acceleration_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct lsm330dlc_acceleration_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_acceleration_data *) handlers->data;
+
+	rc = ssp_sensor_enable(ACCELEROMETER_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int lsm330dlc_acceleration_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct lsm330dlc_acceleration_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_acceleration_data *) handlers->data;
+
+	rc = ssp_sensor_disable(ACCELEROMETER_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 0;
+
+	return 0;
+}
+
+int lsm330dlc_acceleration_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct lsm330dlc_acceleration_data *data;
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_acceleration_data *) handlers->data;
+
+	rc = sysfs_value_write(data->path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+float lsm330dlc_acceleration_convert(int value)
+{
+	return (float) value * (GRAVITY_EARTH / 1024.0f);
+}
+
+int lsm330dlc_acceleration_get_data(struct smdk4x12_sensors_handlers *handlers,
+	struct sensors_event_t *event)
+{
+	struct lsm330dlc_acceleration_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 lsm330dlc_acceleration_data *) handlers->data;
+
+	input_fd = handlers->poll_fd;
+	if (input_fd < 0)
+		return -1;
+
+	memset(event, 0, sizeof(struct sensors_event_t));
+	event->version = sizeof(struct sensors_event_t);
+	event->sensor = handlers->handle;
+	event->type = handlers->handle;
+
+	event->acceleration.x = data->acceleration.x;
+	event->acceleration.y = data->acceleration.y;
+	event->acceleration.z = data->acceleration.z;
+
+	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->acceleration.x = lsm330dlc_acceleration_convert(input_event.value);
+					break;
+				case REL_Y:
+					event->acceleration.y = lsm330dlc_acceleration_convert(input_event.value);
+					break;
+				case REL_Z:
+					event->acceleration.z = lsm330dlc_acceleration_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);
+
+	data->acceleration.x = event->acceleration.x;
+	data->acceleration.y = event->acceleration.y;
+	data->acceleration.z = event->acceleration.z;
+
+	if (data->orientation_sensor != NULL)
+		orientation_fill(data->orientation_sensor, &event->acceleration, NULL);
+
+	return 0;
+}
+
+struct smdk4x12_sensors_handlers lsm330dlc_acceleration = {
+	.name = "LSM330DLC Acceleration",
+	.handle = SENSOR_TYPE_ACCELEROMETER,
+	.init = lsm330dlc_acceleration_init,
+	.deinit = lsm330dlc_acceleration_deinit,
+	.activate = lsm330dlc_acceleration_activate,
+	.deactivate = lsm330dlc_acceleration_deactivate,
+	.set_delay = lsm330dlc_acceleration_set_delay,
+	.get_data = lsm330dlc_acceleration_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/lsm330dlc_gyroscope.c b/sensors/lsm330dlc_gyroscope.c
new file mode 100644
index 0000000..da2d81d
--- /dev/null
+++ b/sensors/lsm330dlc_gyroscope.c
@@ -0,0 +1,253 @@
+/*
+ * 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 <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 "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+struct lsm330dlc_gyroscope_data {
+	char path_delay[PATH_MAX];
+
+	sensors_vec_t gyro;
+};
+
+int lsm330dlc_gyroscope_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct lsm330dlc_gyroscope_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 lsm330dlc_gyroscope_data *) calloc(1, sizeof(struct lsm330dlc_gyroscope_data));
+
+	input_fd = input_open("gyro_sensor");
+	if (input_fd < 0) {
+		ALOGE("%s: Unable to open input", __func__);
+		goto error;
+	}
+
+	rc = sysfs_path_prefix("gyro_sensor", (char *) &path);
+	if (rc < 0 || path[0] == '\0') {
+		ALOGE("%s: Unable to open sysfs", __func__);
+		goto error;
+	}
+
+	snprintf(data->path_delay, PATH_MAX, "%s/gyro_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 lsm330dlc_gyroscope_deinit(struct smdk4x12_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 lsm330dlc_gyroscope_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct lsm330dlc_gyroscope_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_gyroscope_data *) handlers->data;
+
+	rc = ssp_sensor_enable(GYROSCOPE_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to enable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int lsm330dlc_gyroscope_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct lsm330dlc_gyroscope_data *data;
+	int rc;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_gyroscope_data *) handlers->data;
+
+	rc = ssp_sensor_disable(GYROSCOPE_SENSOR);
+	if (rc < 0) {
+		ALOGE("%s: Unable to disable ssp sensor", __func__);
+		return -1;
+	}
+
+	handlers->activated = 1;
+
+	return 0;
+}
+
+int lsm330dlc_gyroscope_set_delay(struct smdk4x12_sensors_handlers *handlers, long int delay)
+{
+	struct lsm330dlc_gyroscope_data *data;
+	int rc;
+
+	ALOGD("%s(%p, %ld)", __func__, handlers, delay);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct lsm330dlc_gyroscope_data *) handlers->data;
+
+	rc = sysfs_value_write(data->path_delay, (int) delay);
+	if (rc < 0) {
+		ALOGE("%s: Unable to write sysfs value", __func__);
+		return -1;
+	}
+
+	return 0;
+}
+
+float lsm330dlc_gyroscope_convert(int value)
+{
+	return value * (70.0f / 4000.0f) * (3.1415926535f / 180.0f);
+}
+
+int lsm330dlc_gyroscope_get_data(struct smdk4x12_sensors_handlers *handlers,
+	struct sensors_event_t *event)
+{
+	struct lsm330dlc_gyroscope_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 lsm330dlc_gyroscope_data *) handlers->data;
+
+	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;
+
+	event->gyro.x = data->gyro.x;
+	event->gyro.y = data->gyro.y;
+	event->gyro.z = data->gyro.z;
+
+	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_RX:
+					event->gyro.x = lsm330dlc_gyroscope_convert(input_event.value);
+					break;
+				case REL_RY:
+					event->gyro.y = lsm330dlc_gyroscope_convert(input_event.value);
+					break;
+				case REL_RZ:
+					event->gyro.z = lsm330dlc_gyroscope_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);
+
+	data->gyro.x = event->gyro.x;
+	data->gyro.y = event->gyro.y;
+	data->gyro.z = event->gyro.z;
+
+	return 0;
+}
+
+struct smdk4x12_sensors_handlers lsm330dlc_gyroscope = {
+	.name = "LSM330DLC Gyroscope",
+	.handle = SENSOR_TYPE_GYROSCOPE,
+	.init = lsm330dlc_gyroscope_init,
+	.deinit = lsm330dlc_gyroscope_deinit,
+	.activate = lsm330dlc_gyroscope_activate,
+	.deactivate = lsm330dlc_gyroscope_deactivate,
+	.set_delay = lsm330dlc_gyroscope_set_delay,
+	.get_data = lsm330dlc_gyroscope_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/orientation.c b/sensors/orientation.c
new file mode 100644
index 0000000..e3529bd
--- /dev/null
+++ b/sensors/orientation.c
@@ -0,0 +1,444 @@
+/*
+ * 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 <stddef.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <linux/ioctl.h>
+#include <linux/uinput.h>
+#include <linux/input.h>
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+
+struct orientation_data {
+	struct smdk4x12_sensors_handlers *acceleration_sensor;
+	struct smdk4x12_sensors_handlers *magnetic_sensor;
+
+	sensors_vec_t orientation;
+	sensors_vec_t acceleration;
+	sensors_vec_t magnetic;
+
+	long int delay;
+	int uinput_fd;
+
+	pthread_t thread;
+	pthread_mutex_t mutex;
+	int thread_continue;
+};
+
+static float rad2deg(float v)
+{
+	return (v * 180.0f / 3.1415926535f);
+}
+
+static float vector_scalar(sensors_vec_t *v, sensors_vec_t *d)
+{
+	return v->x * d->x + v->y * d->y + v->z * d->z;
+}
+
+static float vector_length(sensors_vec_t *v)
+{
+	return sqrtf(vector_scalar(v, v));
+}
+
+void orientation_calculate(sensors_vec_t *a, sensors_vec_t *m, sensors_vec_t *o)
+{
+	float azimuth, pitch, roll;
+	float la, sinp, cosp, sinr, cosr, x, y;
+
+	if (a == NULL || m == NULL || o == NULL)
+		return;
+
+	la = vector_length(a);
+	pitch = asinf(-(a->y) / la);
+	roll = asinf((a->x) / la);
+
+	sinp = sinf(pitch);
+	cosp = cosf(pitch);
+	sinr = sinf(roll);
+	cosr = cosf(roll);
+
+	y = -(m->x) * cosr + m->z * sinr;
+	x = m->x * sinp * sinr + m->y * cosp + m->z * sinp * cosr;
+	azimuth = atan2f(y, x);
+
+	o->azimuth = rad2deg(azimuth);
+	o->pitch = rad2deg(pitch);
+	o->roll = rad2deg(roll);
+
+	if (o->azimuth < 0)
+		o->azimuth += 360.0f;
+}
+
+void *orientation_thread(void *thread_data)
+{
+	struct smdk4x12_sensors_handlers *handlers = NULL;
+	struct orientation_data *data = NULL;
+	struct input_event event;
+	struct timeval time;
+	long int before, after;
+	int diff;
+	int uinput_fd;
+
+	if (thread_data == NULL)
+		return NULL;
+
+	handlers = (struct smdk4x12_sensors_handlers *) thread_data;
+	if (handlers->data == NULL)
+		return NULL;
+
+	data = (struct orientation_data *) handlers->data;
+
+	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);
+
+			orientation_calculate(&data->acceleration, &data->magnetic, &data->orientation);
+
+			input_event_set(&event, EV_REL, REL_X, (int) (data->orientation.azimuth * 1000));
+			write(uinput_fd, &event, sizeof(event));
+			input_event_set(&event, EV_REL, REL_Y, (int) (data->orientation.pitch * 1000));
+			write(uinput_fd, &event, sizeof(event));
+			input_event_set(&event, EV_REL, REL_Z, (int) (data->orientation.roll * 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 orientation_fill(struct smdk4x12_sensors_handlers *handlers,
+	sensors_vec_t *acceleration, sensors_vec_t *magnetic)
+{
+	struct orientation_data *data;
+
+//	ALOGD("%s(%p, %p, %p)", __func__, handlers, acceleration, magnetic);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_data *) handlers->data;
+
+	if (acceleration != NULL) {
+		data->acceleration.x = acceleration->x;
+		data->acceleration.y = acceleration->y;
+		data->acceleration.z = acceleration->z;
+	}
+
+	if (magnetic != NULL) {
+		data->magnetic.x = magnetic->x;
+		data->magnetic.y = magnetic->y;
+		data->magnetic.z = magnetic->z;
+	}
+
+	return 0;
+}
+
+int orientation_init(struct smdk4x12_sensors_handlers *handlers,
+	struct smdk4x12_sensors_device *device)
+{
+	struct orientation_data *data = NULL;
+	pthread_attr_t thread_attr;
+	int uinput_fd = -1;
+	int input_fd = -1;
+	int rc;
+	int i;
+
+	ALOGD("%s(%p, %p)", __func__, handlers, device);
+
+	if (handlers == NULL || device == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_data *) calloc(1, sizeof(struct orientation_data));
+
+	for (i = 0; i < device->handlers_count; i++) {
+		if (device->handlers[i] == NULL)
+			continue;
+
+		if (device->handlers[i]->handle == SENSOR_TYPE_ACCELEROMETER)
+			data->acceleration_sensor = device->handlers[i];
+		else if (device->handlers[i]->handle == SENSOR_TYPE_MAGNETIC_FIELD)
+			data->magnetic_sensor = device->handlers[i];
+	}
+
+	if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL) {
+		ALOGE("%s: Missing sensors for orientation", __func__);
+		goto error;
+	}
+
+	uinput_fd = uinput_rel_create("orientation");
+	if (uinput_fd < 0) {
+		ALOGD("%s: Unable to create uinput", __func__);
+		goto error;
+	}
+
+	input_fd = input_open("orientation");
+	if (input_fd < 0) {
+		ALOGE("%s: Unable to open orientation 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, orientation_thread, (void *) handlers);
+	if (rc < 0) {
+		ALOGE("%s: Unable to create orientation thread", __func__);
+		pthread_mutex_destroy(&data->mutex);
+		goto error;
+	}
+
+	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);
+
+	handlers->poll_fd = -1;
+	handlers->data = NULL;
+
+	return -1;
+}
+
+int orientation_deinit(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct orientation_data *data;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_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;
+
+	free(handlers->data);
+	handlers->data = NULL;
+
+	return 0;
+}
+
+int orientation_activate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct orientation_data *data;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_data *) handlers->data;
+
+	if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
+		return -1;
+
+	data->acceleration_sensor->needed |= SMDK4x12_SENSORS_NEEDED_ORIENTATION;
+	if (data->acceleration_sensor->needed == SMDK4x12_SENSORS_NEEDED_ORIENTATION)
+		data->acceleration_sensor->activate(data->acceleration_sensor);
+
+	data->magnetic_sensor->needed |= SMDK4x12_SENSORS_NEEDED_ORIENTATION;
+	if (data->magnetic_sensor->needed == SMDK4x12_SENSORS_NEEDED_ORIENTATION)
+		data->magnetic_sensor->activate(data->magnetic_sensor);
+
+	handlers->activated = 1;
+	pthread_mutex_unlock(&data->mutex);
+
+	return 0;
+}
+
+int orientation_deactivate(struct smdk4x12_sensors_handlers *handlers)
+{
+	struct orientation_data *data;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_data *) handlers->data;
+
+	if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
+		return -1;
+
+	data->acceleration_sensor->needed &= ~(SMDK4x12_SENSORS_NEEDED_ORIENTATION);
+	if (data->acceleration_sensor->needed == 0)
+		data->acceleration_sensor->deactivate(data->acceleration_sensor);
+
+	data->magnetic_sensor->needed &= ~(SMDK4x12_SENSORS_NEEDED_ORIENTATION);
+	if (data->magnetic_sensor->needed == 0)
+		data->magnetic_sensor->deactivate(data->magnetic_sensor);
+
+	handlers->activated = 0;
+
+	return 0;
+}
+
+int orientation_set_delay(struct smdk4x12_sensors_handlers *handlers,
+	long int delay)
+{
+	struct orientation_data *data;
+
+	ALOGD("%s(%p)", __func__, handlers);
+
+	if (handlers == NULL || handlers->data == NULL)
+		return -EINVAL;
+
+	data = (struct orientation_data *) handlers->data;
+
+	if (data->acceleration_sensor == NULL || data->magnetic_sensor == NULL)
+		return -1;
+
+	if (data->acceleration_sensor->needed == SMDK4x12_SENSORS_NEEDED_ORIENTATION)
+		data->acceleration_sensor->set_delay(data->acceleration_sensor, delay);
+
+	if (data->magnetic_sensor->needed == SMDK4x12_SENSORS_NEEDED_ORIENTATION)
+		data->magnetic_sensor->set_delay(data->magnetic_sensor, delay);
+
+	data->delay = delay;
+
+	return 0;
+}
+
+float orientation_convert(int value)
+{
+	return (float) value / 1000.0f;
+}
+
+int orientation_get_data(struct smdk4x12_sensors_handlers *handlers,
+	struct sensors_event_t *event)
+{
+	struct input_event input_event;
+	int input_fd = -1;
+	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;
+
+	event->orientation.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->orientation.azimuth = orientation_convert(input_event.value);
+					break;
+				case REL_Y:
+					event->orientation.pitch = orientation_convert(input_event.value);
+					break;
+				case REL_Z:
+					event->orientation.roll = orientation_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);
+
+	return 0;
+}
+
+struct smdk4x12_sensors_handlers orientation = {
+	.name = "Orientation",
+	.handle = SENSOR_TYPE_ORIENTATION,
+	.init = orientation_init,
+	.deinit = orientation_deinit,
+	.activate = orientation_activate,
+	.deactivate = orientation_deactivate,
+	.set_delay = orientation_set_delay,
+	.get_data = orientation_get_data,
+	.activated = 0,
+	.needed = 0,
+	.poll_fd = -1,
+	.data = NULL,
+};
diff --git a/sensors/smdk4x12_sensors.c b/sensors/smdk4x12_sensors.c
new file mode 100644
index 0000000..29de591
--- /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, 0.25f, 10000, {}, },
+	{ "AKM8963 Magnetic Sensor", "Asahi Kasei Microdevices", 1, SENSOR_TYPE_MAGNETIC_FIELD,
+		SENSOR_TYPE_MAGNETIC_FIELD, 2000.0f, 0.06f, 6.0f, 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, 3000.0f, 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, {}, },
+	{ "BMP180 Pressure Sensor", "Bosch", 1, SENSOR_TYPE_PRESSURE,
+		SENSOR_TYPE_PRESSURE, 1000.0f, 1.0f, 1.0f, 66700, {}, },
+};
+
+int smdk4x12_sensors_count = sizeof(smdk4x12_sensors) / sizeof(struct sensor_t);
+
+struct smdk4x12_sensors_handlers *smdk4x12_sensors_handlers[] = {
+	&lsm330dlc_acceleration,
+	&akm8963,
+	&orientation,
+	&cm36651_proximity,
+	&cm36651_light,
+	&lsm330dlc_gyroscope,
+	&bmp180,
+};
+
+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,
+};
diff --git a/sensors/smdk4x12_sensors.h b/sensors/smdk4x12_sensors.h
new file mode 100644
index 0000000..5dc54d8
--- /dev/null
+++ b/sensors/smdk4x12_sensors.h
@@ -0,0 +1,108 @@
+/*
+ * 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 <stdint.h>
+#include <poll.h>
+#include <linux/input.h>
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#ifndef _SMDK4x12_SENSORS_H_
+#define _SMDK4x12_SENSORS_H_
+
+#define SMDK4x12_SENSORS_NEEDED_API		(1 << 0)
+#define SMDK4x12_SENSORS_NEEDED_ORIENTATION	(1 << 1)
+
+struct smdk4x12_sensors_device;
+
+struct smdk4x12_sensors_handlers {
+	char *name;
+	int handle;
+
+	int (*init)(struct smdk4x12_sensors_handlers *handlers,
+		struct smdk4x12_sensors_device *device);
+	int (*deinit)(struct smdk4x12_sensors_handlers *handlers);
+	int (*activate)(struct smdk4x12_sensors_handlers *handlers);
+	int (*deactivate)(struct smdk4x12_sensors_handlers *handlers);
+	int (*set_delay)(struct smdk4x12_sensors_handlers *handlers,
+		long int delay);
+	int (*get_data)(struct smdk4x12_sensors_handlers *handlers,
+		struct sensors_event_t *event);
+
+	int activated;
+	int needed;
+	int poll_fd;
+
+	void *data;
+};
+
+struct smdk4x12_sensors_device {
+	struct sensors_poll_device_t device;
+
+	struct smdk4x12_sensors_handlers **handlers;
+	int handlers_count;
+
+	struct pollfd *poll_fds;
+	int poll_fds_count;
+};
+
+extern struct smdk4x12_sensors_handlers *smdk4x12_sensors_handlers[];
+extern int smdk4x12_sensors_handlers_count;
+
+int smdk4x12_sensors_activate(struct sensors_poll_device_t *dev, int handle,
+	int enabled);
+int smdk4x12_sensors_set_delay(struct sensors_poll_device_t *dev, int handle,
+	int64_t ns);
+int smdk4x12_sensors_poll(struct sensors_poll_device_t *dev,
+	struct sensors_event_t* data, int count);
+
+/*
+ * Input
+ */
+
+void input_event_set(struct input_event *event, int type, int code, int value);
+long int timestamp(struct timeval *time);
+long int input_timestamp(struct input_event *event);
+int uinput_rel_create(const char *name);
+void uinput_destroy(int uinput_fd);
+int input_open(char *name);
+int sysfs_path_prefix(char *name, char *path_prefix);
+int sysfs_value_read(char *path);
+int sysfs_value_write(char *path, int value);
+int sysfs_string_read(char *path, char *buffer, size_t length);
+int sysfs_string_write(char *path, char *buffer, size_t length);
+
+/*
+ * Sensors
+ */
+
+int orientation_fill(struct smdk4x12_sensors_handlers *handlers,
+	sensors_vec_t *acceleration, sensors_vec_t *magnetic);
+
+int ssp_sensor_enable(int sensor_type);
+int ssp_sensor_disable(int sensor_type);
+
+extern struct smdk4x12_sensors_handlers lsm330dlc_acceleration;
+extern struct smdk4x12_sensors_handlers akm8963;
+extern struct smdk4x12_sensors_handlers orientation;
+extern struct smdk4x12_sensors_handlers cm36651_proximity;
+extern struct smdk4x12_sensors_handlers cm36651_light;
+extern struct smdk4x12_sensors_handlers lsm330dlc_gyroscope;
+extern struct smdk4x12_sensors_handlers bmp180;
+
+#endif
diff --git a/sensors/ssp.c b/sensors/ssp.c
new file mode 100644
index 0000000..d1d4ae1
--- /dev/null
+++ b/sensors/ssp.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2014 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 <errno.h>
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+#define LOG_TAG "smdk4x12_sensors"
+#include <utils/Log.h>
+
+#include "smdk4x12_sensors.h"
+#include "ssp.h"
+
+int ssp_sensor_enable(int sensor_type)
+{
+	char path_enable[PATH_MAX] = "/sys/class/sensors/ssp_sensor/enable";
+	int value;
+	int rc;
+
+	ALOGD("%s(%d)", __func__, sensor_type);
+
+	if (sensor_type < 0 || sensor_type >= SENSOR_FACTORY_MAX)
+		return -EINVAL;
+
+	value = sysfs_value_read(path_enable);
+	if (value < 0)
+		value = 0;
+
+	value |= (1 << sensor_type);
+
+	rc = sysfs_value_write(path_enable, value);
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
+
+int ssp_sensor_disable(int sensor_type)
+{
+	char path_enable[PATH_MAX] = "/sys/class/sensors/ssp_sensor/enable";
+	int value;
+	int rc;
+
+	ALOGD("%s(%d)", __func__, sensor_type);
+
+	if (sensor_type < 0 || sensor_type >= SENSOR_FACTORY_MAX)
+		return -EINVAL;
+
+	value = sysfs_value_read(path_enable);
+	if (value < 0)
+		value = 0;
+
+	value &= ~(1 << sensor_type);
+
+	rc = sysfs_value_write(path_enable, value);
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
diff --git a/sensors/ssp.h b/sensors/ssp.h
new file mode 100644
index 0000000..48c9ad9
--- /dev/null
+++ b/sensors/ssp.h
@@ -0,0 +1,177 @@
+/*
+ *  Copyright (C) 2012, 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.
+ *
+ */
+
+#ifndef __SSP_PRJ_H__
+#define __SSP_PRJ_H__
+
+#include <stdint.h>
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define SSP_SW_RESET_TIME	3000
+#define DEFUALT_POLLING_DELAY	(200 * NSEC_PER_MSEC)
+#define PROX_AVG_READ_NUM	80
+#define DEFAULT_RETRIES		3
+
+/* Sensor Sampling Time Define */
+enum {
+	SENSOR_NS_DELAY_FASTEST = 10000000,	/* 10msec */
+	SENSOR_NS_DELAY_GAME = 20000000,	/* 20msec */
+	SENSOR_NS_DELAY_UI = 66700000,		/* 66.7msec */
+	SENSOR_NS_DELAY_NORMAL = 200000000,	/* 200msec */
+};
+
+enum {
+	SENSOR_MS_DELAY_FASTEST = 10,	/* 10msec */
+	SENSOR_MS_DELAY_GAME = 20,	/* 20msec */
+	SENSOR_MS_DELAY_UI = 66,	/* 66.7msec */
+	SENSOR_MS_DELAY_NORMAL = 200,	/* 200msec */
+};
+
+enum {
+	SENSOR_CMD_DELAY_FASTEST = 0,	/* 10msec */
+	SENSOR_CMD_DELAY_GAME,		/* 20msec */
+	SENSOR_CMD_DELAY_UI,		/* 66.7msec */
+	SENSOR_CMD_DELAY_NORMAL,	/* 200msec */
+};
+
+/*
+ * SENSOR_DELAY_SET_STATE
+ * Check delay set to avoid sending ADD instruction twice
+ */
+enum {
+	INITIALIZATION_STATE = 0,
+	NO_SENSOR_STATE,
+	ADD_SENSOR_STATE,
+	RUNNING_SENSOR_STATE,
+};
+
+/* Gyroscope DPS */
+#define GYROSCOPE_DPS250		250
+#define GYROSCOPE_DPS500		500
+#define GYROSCOPE_DPS2000		2000
+
+/* kernel -> ssp manager cmd*/
+#define SSP_LIBRARY_SLEEP_CMD		(1 << 5)
+#define SSP_LIBRARY_LARGE_DATA_CMD	(1 << 6)
+#define SSP_LIBRARY_WAKEUP_CMD		(1 << 7)
+
+/* ioctl command */
+#define AKMIO				0xA1
+#define ECS_IOCTL_GET_FUSEROMDATA	_IOR(AKMIO, 0x01, unsigned char[3])
+#define ECS_IOCTL_GET_MAGDATA	        _IOR(AKMIO, 0x02, unsigned char[8])
+#define ECS_IOCTL_GET_ACCDATA	        _IOR(AKMIO, 0x03, int[3])
+
+/* AP -> SSP Instruction */
+#define MSG2SSP_INST_BYPASS_SENSOR_ADD		0xA1
+#define MSG2SSP_INST_BYPASS_SENSOR_REMOVE	0xA2
+#define MSG2SSP_INST_REMOVE_ALL			0xA3
+#define MSG2SSP_INST_CHANGE_DELAY		0xA4
+#define MSG2SSP_INST_SENSOR_SELFTEST		0xA8
+#define MSG2SSP_INST_LIBRARY_ADD		0xB1
+#define MSG2SSP_INST_LIBRARY_REMOVE		0xB2
+
+#define MSG2SSP_AP_STT				0xC8
+#define MSG2SSP_AP_STATUS_WAKEUP		0xD1
+#define MSG2SSP_AP_STATUS_SLEEP			0xD2
+#define MSG2SSP_AP_STATUS_RESET			0xD3
+#define MSG2SSP_AP_WHOAMI			0x0F
+#define MSG2SSP_AP_FIRMWARE_REV			0xF0
+#define MSG2SSP_AP_SENSOR_FORMATION		0xF1
+#define MSG2SSP_AP_SENSOR_PROXTHRESHOLD		0xF2
+#define MSG2SSP_AP_SENSOR_BARCODE_EMUL		0xF3
+#define MSG2SSP_AP_SENSOR_SCANNING		0xF4
+
+#define MSG2SSP_AP_FUSEROM			0X01
+
+/* AP -> SSP Data Protocol Frame Field */
+#define MSG2SSP_SSP_SLEEP	0xC1
+#define MSG2SSP_STS		0xC2	/* Start to Send */
+#define MSG2SSP_RTS		0xC4	/* Ready to Send */
+#define MSG2SSP_STT		0xC8
+#define MSG2SSP_SRM		0xCA	/* Start to Read MSG */
+#define MSG2SSP_SSM		0xCB	/* Start to Send MSG */
+#define MSG2SSP_SSD		0xCE	/* Start to Send Data Type & Length */
+
+/* SSP -> AP ACK about write CMD */
+#define MSG_ACK					0x80	/* ACK from SSP to AP */
+#define MSG_NAK					0x70	/* NAK from SSP to AP */
+
+
+/* SSP_INSTRUCTION_CMD */
+enum {
+	REMOVE_SENSOR = 0,
+	ADD_SENSOR,
+	CHANGE_DELAY,
+	GO_SLEEP,
+	FACTORY_MODE,
+	REMOVE_LIBRARY,
+	ADD_LIBRARY,
+};
+
+/* SENSOR_TYPE */
+enum {
+	ACCELEROMETER_SENSOR = 0,
+	GYROSCOPE_SENSOR,
+	GEOMAGNETIC_SENSOR,
+	PRESSURE_SENSOR,
+	GESTURE_SENSOR,
+	PROXIMITY_SENSOR,
+	LIGHT_SENSOR,
+	PROXIMITY_RAW,
+	ORIENTATION_SENSOR,
+	SENSOR_MAX,
+};
+
+/* SENSOR_FACTORY_MODE_TYPE */
+enum {
+	ACCELEROMETER_FACTORY = 0,
+	GYROSCOPE_FACTORY,
+	GEOMAGNETIC_FACTORY,
+	PRESSURE_FACTORY,
+	MCU_FACTORY,
+	GYROSCOPE_TEMP_FACTORY,
+	GYROSCOPE_DPS_FACTORY,
+	MCU_SLEEP_FACTORY,
+	SENSOR_FACTORY_MAX,
+};
+
+struct sensor_value {
+	union {
+		struct {
+			__s16 x;
+			__s16 y;
+			__s16 z;
+		};
+		struct {
+			__u16 r;
+			__u16 g;
+			__u16 b;
+			__u16 w;
+		};
+		__u8 prox[4];
+		__s16 data[4];
+		__s32 pressure[3];
+	};
+};
+
+struct calibraion_data {
+	int x;
+	int y;
+	int z;
+};
+
+#endif