blob: 159ea3f8c02bc6fa2d099944f35a44beb5e1e707 [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0-only */
/* The industrial I/O core function defs.
* Copyright (c) 2008 Jonathan Cameron
* These definitions are meant for use only within the IIO core, not individual
* drivers.
#ifndef _IIO_CORE_H_
#define _IIO_CORE_H_
#include <linux/kernel.h>
#include <linux/device.h>
struct iio_chan_spec;
struct iio_dev;
extern struct device_type iio_device_type;
int __iio_add_chan_devattr(const char *postfix,
struct iio_chan_spec const *chan,
ssize_t (*func)(struct device *dev,
struct device_attribute *attr,
char *buf),
ssize_t (*writefunc)(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t len),
u64 mask,
enum iio_shared_by shared_by,
struct device *dev,
struct list_head *attr_list);
void iio_free_chan_devattr_list(struct list_head *attr_list);
ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
/* Event interface flags */
#define IIO_BUSY_BIT_POS 1
struct poll_table_struct;
__poll_t iio_buffer_poll(struct file *filp,
struct poll_table_struct *wait);
ssize_t iio_buffer_read_first_n_outer(struct file *filp, char __user *buf,
size_t n, loff_t *f_ps);
int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
#define iio_buffer_poll_addr (&iio_buffer_poll)
#define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer)
void iio_disable_all_buffers(struct iio_dev *indio_dev);
void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
#define iio_buffer_poll_addr NULL
#define iio_buffer_read_first_n_outer_addr NULL
static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
return 0;
static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
int iio_device_register_eventset(struct iio_dev *indio_dev);
void iio_device_unregister_eventset(struct iio_dev *indio_dev);
void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
int iio_event_getfd(struct iio_dev *indio_dev);
struct iio_event_interface;
bool iio_event_enabled(const struct iio_event_interface *ev_int);