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);
getMinDelay()48     virtual int64_t getMinDelay() { return mMinDelay; }
49     // only applicable to primary
readEvents(sensors_event_t * data,int count)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
isIntegrated()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