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drivers/iio/iio_core.h
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/* The industrial I/O core function defs. * * 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. * |
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* These definitions are meant for use only within the IIO core, not individual |
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* drivers. */ |
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#ifndef _IIO_CORE_H_ #define _IIO_CORE_H_ |
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#include <linux/kernel.h> #include <linux/device.h> struct iio_chan_spec; struct iio_dev; |
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extern struct device_type iio_device_type; |
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int __iio_add_chan_devattr(const char *postfix, |
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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), |
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u64 mask, |
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enum iio_shared_by shared_by, |
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struct device *dev, struct list_head *attr_list); |
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void iio_free_chan_devattr_list(struct list_head *attr_list); |
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ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals); |
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/* Event interface flags */ #define IIO_BUSY_BIT_POS 1 |
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#ifdef CONFIG_IIO_BUFFER |
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struct poll_table_struct; |
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unsigned int 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); |
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int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev); void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev); |
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#define iio_buffer_poll_addr (&iio_buffer_poll) #define iio_buffer_read_first_n_outer_addr (&iio_buffer_read_first_n_outer) |
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void iio_disable_all_buffers(struct iio_dev *indio_dev); |
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void iio_buffer_wakeup_poll(struct iio_dev *indio_dev); |
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#else |
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#define iio_buffer_poll_addr NULL #define iio_buffer_read_first_n_outer_addr NULL |
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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) {} |
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static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {} |
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static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {} |
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#endif |
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int iio_device_register_eventset(struct iio_dev *indio_dev); void iio_device_unregister_eventset(struct iio_dev *indio_dev); |
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void iio_device_wakeup_eventset(struct iio_dev *indio_dev); |
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int iio_event_getfd(struct iio_dev *indio_dev); |
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struct iio_event_interface; bool iio_event_enabled(const struct iio_event_interface *ev_int); |
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#endif |