linux-imx

/* The industrial I/O core

 *

 * Copyright (c) 2008 Jonathan Cameron

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 as published by

 * the Free Software Foundation.

 *

 * Based on elements of hwmon and input subsystems.

 */

​

#define pr_fmt(fmt) "iio-core: " fmt

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/idr.h>

#include <linux/kdev_t.h>

#include <linux/err.h>

#include <linux/device.h>

#include <linux/fs.h>

#include <linux/poll.h>

#include <linux/sched.h>

#include <linux/wait.h>

#include <linux/cdev.h>

#include <linux/slab.h>

#include <linux/anon_inodes.h>

#include <linux/debugfs.h>

#include <linux/mutex.h>

#include <linux/iio/iio.h>

#include "iio_core.h"

#include "iio_core_trigger.h"

#include <linux/iio/sysfs.h>

#include <linux/iio/events.h>

#include <linux/iio/buffer.h>

#include <linux/iio/buffer_impl.h>

​

/* IDA to assign each registered device a unique id */

static DEFINE_IDA(iio_ida);

​

static dev_t iio_devt;

​

#define IIO_DEV_MAX 256

struct bus_type iio_bus_type = {

    .name = "iio",

};

EXPORT_SYMBOL(iio_bus_type);

​

static struct dentry *iio_debugfs_dentry;

​

static const char * const iio_direction[] = {

    [0] = "in",

    [1] = "out",

};

​

static const char * const iio_chan_type_name_spec[] = {

    [IIO_VOLTAGE] = "voltage",

    [IIO_CURRENT] = "current",

    [IIO_POWER] = "power",

    [IIO_ACCEL] = "accel",

    [IIO_ANGL_VEL] = "anglvel",

    [IIO_MAGN] = "magn",

    [IIO_LIGHT] = "illuminance",

    [IIO_INTENSITY] = "intensity",

    [IIO_PROXIMITY] = "proximity",

    [IIO_TEMP] = "temp",

    [IIO_INCLI] = "incli",

    [IIO_ROT] = "rot",

    [IIO_ANGL] = "angl",

    [IIO_TIMESTAMP] = "timestamp",

    [IIO_CAPACITANCE] = "capacitance",

    [IIO_ALTVOLTAGE] = "altvoltage",

    [IIO_CCT] = "cct",

    [IIO_PRESSURE] = "pressure",

    [IIO_HUMIDITYRELATIVE] = "humidityrelative",

    [IIO_ACTIVITY] = "activity",

    [IIO_STEPS] = "steps",

    [IIO_ENERGY] = "energy",

    [IIO_DISTANCE] = "distance",

    [IIO_VELOCITY] = "velocity",

    [IIO_CONCENTRATION] = "concentration",

    [IIO_RESISTANCE] = "resistance",

    [IIO_PH] = "ph",

    [IIO_UVINDEX] = "uvindex",

    [IIO_ELECTRICALCONDUCTIVITY] = "electricalconductivity",

    [IIO_COUNT] = "count",

    [IIO_INDEX] = "index",

    [IIO_GRAVITY]  = "gravity",

    [IIO_POSITIONRELATIVE]  = "positionrelative",

    [IIO_PHASE] = "phase",

    [IIO_MASSCONCENTRATION] = "massconcentration",

};

​