1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* The industrial I/O core function defs.
4 * Copyright (c) 2008 Jonathan Cameron
6 * These definitions are meant for use only within the IIO core, not individual
12 #include <linux/kernel.h>
13 #include <linux/device.h>
18 extern struct device_type iio_device_type;
20 #define IIO_IOCTL_UNHANDLED 1
21 struct iio_ioctl_handler {
22 struct list_head entry;
23 long (*ioctl)(struct iio_dev *indio_dev, struct file *filp,
24 unsigned int cmd, unsigned long arg);
27 long iio_device_ioctl(struct iio_dev *indio_dev, struct file *filp,
28 unsigned int cmd, unsigned long arg);
30 void iio_device_ioctl_handler_register(struct iio_dev *indio_dev,
31 struct iio_ioctl_handler *h);
32 void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h);
34 int __iio_add_chan_devattr(const char *postfix,
35 struct iio_chan_spec const *chan,
36 ssize_t (*func)(struct device *dev,
37 struct device_attribute *attr,
39 ssize_t (*writefunc)(struct device *dev,
40 struct device_attribute *attr,
44 enum iio_shared_by shared_by,
46 struct list_head *attr_list);
47 void iio_free_chan_devattr_list(struct list_head *attr_list);
49 ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
51 /* Event interface flags */
52 #define IIO_BUSY_BIT_POS 1
54 #ifdef CONFIG_IIO_BUFFER
55 struct poll_table_struct;
57 __poll_t iio_buffer_poll(struct file *filp,
58 struct poll_table_struct *wait);
59 ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
60 size_t n, loff_t *f_ps);
62 int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
63 void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
65 #define iio_buffer_poll_addr (&iio_buffer_poll)
66 #define iio_buffer_read_outer_addr (&iio_buffer_read_outer)
68 void iio_disable_all_buffers(struct iio_dev *indio_dev);
69 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
73 #define iio_buffer_poll_addr NULL
74 #define iio_buffer_read_outer_addr NULL
76 static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
81 static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
83 static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
84 static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
88 int iio_device_register_eventset(struct iio_dev *indio_dev);
89 void iio_device_unregister_eventset(struct iio_dev *indio_dev);
90 void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
92 struct iio_event_interface;
93 bool iio_event_enabled(const struct iio_event_interface *ev_int);