1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Industrial I/O software device interface
4 *
5 * Copyright (c) 2016 Intel Corporation
6 */
7
8 #ifndef __IIO_SW_DEVICE
9 #define __IIO_SW_DEVICE
10
11 #include <linux/module.h>
12 #include <linux/device.h>
13 #include <linux/iio/iio.h>
14 #include <linux/configfs.h>
15
16 #define module_iio_sw_device_driver(__iio_sw_device_type) \
17 module_driver(__iio_sw_device_type, iio_register_sw_device_type, \
18 iio_unregister_sw_device_type)
19
20 struct iio_sw_device_ops;
21
22 struct iio_sw_device_type {
23 const char *name;
24 struct module *owner;
25 const struct iio_sw_device_ops *ops;
26 struct list_head list;
27 struct config_group *group;
28 };
29
30 struct iio_sw_device {
31 struct iio_dev *device;
32 struct iio_sw_device_type *device_type;
33 struct config_group group;
34 };
35
36 struct iio_sw_device_ops {
37 struct iio_sw_device* (*probe)(const char *);
38 int (*remove)(struct iio_sw_device *);
39 };
40
41 static inline
to_iio_sw_device(struct config_item * item)42 struct iio_sw_device *to_iio_sw_device(struct config_item *item)
43 {
44 return container_of(to_config_group(item), struct iio_sw_device,
45 group);
46 }
47
48 int iio_register_sw_device_type(struct iio_sw_device_type *dt);
49 void iio_unregister_sw_device_type(struct iio_sw_device_type *dt);
50
51 struct iio_sw_device *iio_sw_device_create(const char *, const char *);
52 void iio_sw_device_destroy(struct iio_sw_device *);
53
54 int iio_sw_device_type_configfs_register(struct iio_sw_device_type *dt);
55 void iio_sw_device_type_configfs_unregister(struct iio_sw_device_type *dt);
56
57 static inline
iio_swd_group_init_type_name(struct iio_sw_device * d,const char * name,const struct config_item_type * type)58 void iio_swd_group_init_type_name(struct iio_sw_device *d,
59 const char *name,
60 const struct config_item_type *type)
61 {
62 #if IS_ENABLED(CONFIG_CONFIGFS_FS)
63 config_group_init_type_name(&d->group, name, type);
64 #endif
65 }
66
67 #endif /* __IIO_SW_DEVICE */
68