forked from rubenslte/android_kernel_samsung_msm8226
Jie Cheng
82fd75651f
The sensor class driver will create the "enable" and "poll_delay" handles in the "/sys/class/sensors/xxx/" for each sensor driver. The userspace code could easily find the control interface by searching the "/sys/class/sensors/" folder. Change-Id: Ia18f062262e4b78db7d7de87acb49dfcf485063b Signed-off-by: Jie Cheng <rockiec@codeaurora.org>
106 lines
3.8 KiB
C
106 lines
3.8 KiB
C
/* Copyright (c) 2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __LINUX_SENSORS_H_INCLUDED
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#define __LINUX_SENSORS_H_INCLUDED
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/rwsem.h>
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#define SENSORS_ACCELERATION_HANDLE 0
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#define SENSORS_MAGNETIC_FIELD_HANDLE 1
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#define SENSORS_ORIENTATION_HANDLE 2
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#define SENSORS_LIGHT_HANDLE 3
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#define SENSORS_PROXIMITY_HANDLE 4
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#define SENSORS_GYROSCOPE_HANDLE 5
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#define SENSORS_PRESSURE_HANDLE 6
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#define SENSOR_TYPE_ACCELEROMETER 1
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#define SENSOR_TYPE_GEOMAGNETIC_FIELD 2
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#define SENSOR_TYPE_MAGNETIC_FIELD SENSOR_TYPE_GEOMAGNETIC_FIELD
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#define SENSOR_TYPE_ORIENTATION 3
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#define SENSOR_TYPE_GYROSCOPE 4
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#define SENSOR_TYPE_LIGHT 5
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#define SENSOR_TYPE_PRESSURE 6
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#define SENSOR_TYPE_TEMPERATURE 7
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#define SENSOR_TYPE_PROXIMITY 8
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#define SENSOR_TYPE_GRAVITY 9
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#define SENSOR_TYPE_LINEAR_ACCELERATION 10
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#define SENSOR_TYPE_ROTATION_VECTOR 11
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#define SENSOR_TYPE_RELATIVE_HUMIDITY 12
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#define SENSOR_TYPE_AMBIENT_TEMPERATURE 13
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#define SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED 14
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#define SENSOR_TYPE_GAME_ROTATION_VECTOR 15
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#define SENSOR_TYPE_GYROSCOPE_UNCALIBRATED 16
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#define SENSOR_TYPE_SIGNIFICANT_MOTION 17
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#define SENSOR_TYPE_STEP_DETECTOR 18
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#define SENSOR_TYPE_STEP_COUNTER 19
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#define SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR 20
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/**
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* struct sensors_classdev - hold the sensor general parameters and APIs
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* @dev: The device to register.
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* @node: The list for the all the sensor drivers.
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* @name: Name of this sensor.
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* @vendor: The vendor of the hardware part.
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* @handle: The handle that identifies this sensors.
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* @type: The sensor type.
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* @max_range: The maximum range of this sensor's value in SI units.
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* @resolution: The smallest difference between two values reported by
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* this sensor.
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* @sensor_power: The rough estimate of this sensor's power consumption
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* in mA.
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* @min_delay: This value depends on the trigger mode:
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* continuous: minimum period allowed in microseconds
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* on-change : 0
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* one-shot :-1
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* special : 0, unless otherwise noted
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* @fifo_reserved_event_count: The number of events reserved for this sensor
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* in the batch mode FIFO.
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* @fifo_max_event_count: The maximum number of events of this sensor
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* that could be batched.
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* @enabled: Store the sensor driver enable status.
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* @delay_msec: Store the sensor driver delay value. The data unit is
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* millisecond.
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* @sensors_enable: The handle for enable and disable sensor.
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* @sensors_poll_delay: The handle for set the sensor polling delay time.
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*/
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struct sensors_classdev {
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struct device *dev;
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struct list_head node;
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const char *name;
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const char *vendor;
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int version;
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int handle;
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int type;
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const char *max_range;
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const char *resolution;
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const char *sensor_power;
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int min_delay;
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int fifo_reserved_event_count;
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int fifo_max_event_count;
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unsigned int enabled;
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unsigned int delay_msec;
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/* enable and disable the sensor handle*/
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int (*sensors_enable)(struct sensors_classdev *sensors_cdev,
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unsigned int enabled);
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int (*sensors_poll_delay)(struct sensors_classdev *sensors_cdev,
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unsigned int delay_msec);
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};
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extern int sensors_classdev_register(struct device *parent,
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struct sensors_classdev *sensors_cdev);
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extern void sensors_classdev_unregister(struct sensors_classdev *sensors_cdev);
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#endif /* __LINUX_SENSORS_H_INCLUDED */
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