N7100: Open source sensors

smdk4412: https://gerrit.omnirom.org/#/c/3934/
This reverts commit 1862e93acf995525493f0c47f4ba6fde37611ba2.

Change-Id: Ib5c14f7da94ea1696bae36f7d0bf19a0c63e57e9

Conflicts:
	BoardConfig.mk

1 files changed, 71 insertions, 0 deletions

diff --git a/libsensors/SensorBase.h b/libsensors/SensorBase.h
new file mode 100644
index 0000000..d9e4b47
--- /dev/null
+++ b/libsensors/SensorBase.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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_SENSOR_BASE_H
+#define ANDROID_SENSOR_BASE_H
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#include "sensors.h"
+
+
+/*****************************************************************************/
+
+struct sensors_event_t;
+
+class SensorBase {
+protected:
+    const char* dev_name;
+    const char* data_name;
+    char        input_name[PATH_MAX];
+    int         dev_fd;
+    int         data_fd;
+
+    int openInput(const char* inputName);
+    static int64_t getTimestamp();
+
+
+    static int64_t timevalToNano(timeval const& t) {
+        return t.tv_sec*1000000000LL + t.tv_usec*1000;
+    }
+
+    int open_device();
+    int close_device();
+
+public:
+            SensorBase(
+                    const char* dev_name,
+                    const char* data_name);
+
+    virtual ~SensorBase();
+
+    virtual int readEvents(sensors_event_t* data, int count) = 0;
+    virtual bool hasPendingEvents() const;
+    virtual int getFd() const;
+    virtual int setDelay(int32_t handle, int64_t ns);
+    virtual int enable(int32_t handle, int enabled) = 0;
+    int sspEnable(const char* sensorname, int sensorvalue, int en);
+    virtual int batch(int handle, int flags, int64_t period_ns, int64_t timeout);
+    virtual int flush(int handle);
+
+};
+
+/*****************************************************************************/
+
+#endif  // ANDROID_SENSOR_BASE_H