From fd62ef4c2d6e912b0a9a5354e82560f515b0c20c Mon Sep 17 00:00:00 2001
From: Marty Fouts <mfouts@sta.samsung.com>
Date: Mon, 27 Jun 2011 22:40:40 -0700
Subject: tuna: sensors: add light, proximity, pressure sensors

NOTE:
	- light sensor ADC values need to be calibrated.

Change-Id: Iba75dc62a922bbcd0d1e273566f9089c4da450fb
Signed-off-by: Marty Fouts <mfouts@sta.samsung.com>
---
 libsensors/ProximitySensor.cpp | 70 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 libsensors/ProximitySensor.cpp

(limited to 'libsensors/ProximitySensor.cpp')

diff --git a/libsensors/ProximitySensor.cpp b/libsensors/ProximitySensor.cpp
new file mode 100644
index 0000000..4e1ec9d
--- /dev/null
+++ b/libsensors/ProximitySensor.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2011 Samsung
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <poll.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <sys/select.h>
+#include <pthread.h>
+
+#include <cutils/log.h>
+
+#include "ProximitySensor.h"
+
+/*****************************************************************************/
+
+ProximitySensor::ProximitySensor()
+    : SamsungSensorBase(NULL, "proximity", ABS_DISTANCE)
+{
+    mPendingEvent.sensor = ID_P;
+    mPendingEvent.type = SENSOR_TYPE_PROXIMITY;
+}
+
+int ProximitySensor::setDelay(int32_t handle, int64_t ns)
+{
+    return -1;
+}
+
+float ProximitySensor::indexToValue(size_t index) const
+{
+    return index * PROXIMITY_THRESHOLD_GP2A;
+}
+
+bool ProximitySensor::hasPendingEvents() const {
+    return mHasPendingEvent;
+}
+
+int ProximitySensor::handleEnable(int en) {
+    if (!en)
+        return 0;
+
+    struct input_absinfo absinfo;
+    if (!ioctl(data_fd, EVIOCGABS(ABS_DISTANCE), &absinfo)) {
+        mHasPendingEvent = true;
+        mPendingEvent.distance = indexToValue(absinfo.value);
+        return 0;
+    } else {
+        return -1;
+    }
+}
+
+bool ProximitySensor::handleEvent(input_event const *event) {
+    mPendingEvent.distance = indexToValue(event->value);
+    return true;
+}
-- 
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