Add ambient light sensor HAL
Add ambient light sensor HAL for tsl258x sensor base input subsys.
Change-Id: I16999c6d54ddb9889d2769a0a372029f4abe2fd1
Tracked-On: https://jira01.devtools.intel.com/browse/MARVIN-551
Signed-off-by: Baixing Tan <[email protected]>
Reviewed-on: https://android.intel.com:443/356619
diff --git a/als/AlsSensor.h b/als/AlsSensor.h
new file mode 100644
index 0000000..a393b0b
--- /dev/null
+++ b/als/AlsSensor.h
@@ -0,0 +1,65 @@
+/*
+* Copyright (C) 2015 Intel Corp
+*
+* 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.
+*/
+
+
+#ifndef ANDROID_LIGHT_SENSOR_H
+#define ANDROID_LIGHT_SENSOR_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include "sensors.h"
+#include "SensorBase.h"
+#include "InputEventReader.h"
+
+/*****************************************************************************/
+/* the GP2A is a binary proximity sensor that triggers around 5 cm on
+ * this hardware */
+#define PROXIMITY_THRESHOLD_GP2A 5.0f
+
+struct input_event;
+
+class LightSensor : public SensorBase {
+ int mEnabled;
+ int mEventsSinceEnable;
+ InputEventCircularReader mInputReader;
+ sensors_event_t mPendingEvent;
+ bool mHasPendingEvent;
+ char input_sysfs_path[PATH_MAX];
+ int input_sysfs_path_len;
+
+ int setInitialState();
+ float mPreviousLight;
+ float indexToValue(size_t index) const;
+
+public:
+ LightSensor();
+ virtual ~LightSensor();
+ virtual int readEvents(sensors_event_t* data, int count);
+ virtual bool hasPendingEvents() const;
+ virtual int setDelay(int32_t handle, int64_t ns);
+ virtual int enable(int32_t handle, int enabled);
+#ifdef HAL_VERSION_GT_1_0
+ virtual int batch(int handle, int flags, int64_t period_ns, int64_t timeout);
+#endif
+
+};
+
+/*****************************************************************************/
+
+#endif // ANDROID_LIGHT_SENSOR_H
