/* 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 #ifdef CONFIG_IIO_BUFFER struct poll_table_struct; __poll_t iio_buffer_poll(struct file *filp, struct poll_table_struct *wait); ssize_t iio_buffer_read_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_outer_addr (&iio_buffer_read_outer) void iio_disable_all_buffers(struct iio_dev *indio_dev); void iio_buffer_wakeup_poll(struct iio_dev *indio_dev); #else #define iio_buffer_poll_addr NULL #define iio_buffer_read_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) {} #endif 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); #endif