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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef PRESSURE_SENSOR_H
     18 #define PRESSURE_SENSOR_H
     19 
     20 #include <stdint.h>
     21 #include <errno.h>
     22 #include <sys/cdefs.h>
     23 #include <sys/types.h>
     24 
     25 #include <stdint.h>
     26 #include <errno.h>
     27 #include <sys/cdefs.h>
     28 #include <sys/types.h>
     29 #include <poll.h>
     30 #include <utils/Vector.h>
     31 #include <utils/KeyedVector.h>
     32 
     33 #include "sensors.h"
     34 #include "SensorBase.h"
     35 #include "InputEventReader.h"
     36 
     37 class PressureSensor : public SensorBase {
     38 
     39 public:
     40     PressureSensor(const char *sysfs_path);
     41     virtual ~PressureSensor();
     42 
     43     virtual int getFd() const;
     44     virtual int enable(int32_t handle, int enabled);
     45     virtual int setDelay(int32_t handle, int64_t ns);
     46     virtual int getEnable(int32_t handle);
     47     virtual int64_t getDelay(int32_t handle);
     48     virtual int64_t getMinDelay() { return mMinDelay; }
     49     // only applicable to primary
     50     virtual int readEvents(sensors_event_t *data, int count) { return 0; }
     51 
     52     void fillList(struct sensor_t *list);
     53     // default is integrated for secondary bus
     54     int isIntegrated() { return (1); }
     55 
     56 private:
     57     char sensor_name[200];
     58 
     59     struct sysfs_attrbs {
     60        char *pressure_enable;
     61        char *pressure_rate;
     62     } pressureSysFs;
     63 
     64     int pressure_fd;
     65     int64_t mDelay;
     66     int64_t mMinDelay;
     67     int mEnable;
     68     char* pathP;
     69     const char* mSysfsPath;
     70 
     71     int inv_init_sysfs_attributes(void);
     72 };
     73 
     74 /*****************************************************************************/
     75 
     76 #endif  // PRESSURE_SENSOR_H
     77