1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | |
3 | #ifndef _INDUSTRIAL_IO_OPAQUE_H_ |
4 | #define _INDUSTRIAL_IO_OPAQUE_H_ |
5 | |
6 | /** |
7 | * struct iio_dev_opaque - industrial I/O device opaque information |
8 | * @indio_dev: public industrial I/O device information |
9 | * @id: used to identify device internally |
10 | * @currentmode: operating mode currently in use, may be eventually |
11 | * checked by device drivers but should be considered |
12 | * read-only as this is a core internal bit |
13 | * @driver_module: used to make it harder to undercut users |
14 | * @mlock: lock used to prevent simultaneous device state changes |
15 | * @mlock_key: lockdep class for iio_dev lock |
16 | * @info_exist_lock: lock to prevent use during removal |
17 | * @trig_readonly: mark the current trigger immutable |
18 | * @event_interface: event chrdevs associated with interrupt lines |
19 | * @attached_buffers: array of buffers statically attached by the driver |
20 | * @attached_buffers_cnt: number of buffers in the array of statically attached buffers |
21 | * @buffer_ioctl_handler: ioctl() handler for this IIO device's buffer interface |
22 | * @buffer_list: list of all buffers currently attached |
23 | * @channel_attr_list: keep track of automatically created channel |
24 | * attributes |
25 | * @chan_attr_group: group for all attrs in base directory |
26 | * @ioctl_handlers: ioctl handlers registered with the core handler |
27 | * @groups: attribute groups |
28 | * @groupcounter: index of next attribute group |
29 | * @legacy_scan_el_group: attribute group for legacy scan elements attribute group |
30 | * @legacy_buffer_group: attribute group for legacy buffer attributes group |
31 | * @bounce_buffer: for devices that call iio_push_to_buffers_with_timestamp_unaligned() |
32 | * @bounce_buffer_size: size of currently allocate bounce buffer |
33 | * @scan_index_timestamp: cache of the index to the timestamp |
34 | * @clock_id: timestamping clock posix identifier |
35 | * @chrdev: associated character device |
36 | * @flags: file ops related flags including busy flag. |
37 | * @debugfs_dentry: device specific debugfs dentry |
38 | * @cached_reg_addr: cached register address for debugfs reads |
39 | * @read_buf: read buffer to be used for the initial reg read |
40 | * @read_buf_len: data length in @read_buf |
41 | */ |
42 | struct iio_dev_opaque { |
43 | struct iio_dev indio_dev; |
44 | int currentmode; |
45 | int id; |
46 | struct module *driver_module; |
47 | struct mutex mlock; |
48 | struct lock_class_key mlock_key; |
49 | struct mutex info_exist_lock; |
50 | bool trig_readonly; |
51 | struct iio_event_interface *event_interface; |
52 | struct iio_buffer **attached_buffers; |
53 | unsigned int attached_buffers_cnt; |
54 | struct iio_ioctl_handler *buffer_ioctl_handler; |
55 | struct list_head buffer_list; |
56 | struct list_head channel_attr_list; |
57 | struct attribute_group chan_attr_group; |
58 | struct list_head ioctl_handlers; |
59 | const struct attribute_group **groups; |
60 | int groupcounter; |
61 | struct attribute_group legacy_scan_el_group; |
62 | struct attribute_group legacy_buffer_group; |
63 | void *bounce_buffer; |
64 | size_t bounce_buffer_size; |
65 | |
66 | unsigned int scan_index_timestamp; |
67 | clockid_t clock_id; |
68 | struct cdev chrdev; |
69 | unsigned long flags; |
70 | |
71 | #if defined(CONFIG_DEBUG_FS) |
72 | struct dentry *debugfs_dentry; |
73 | unsigned cached_reg_addr; |
74 | char read_buf[20]; |
75 | unsigned int read_buf_len; |
76 | #endif |
77 | }; |
78 | |
79 | #define to_iio_dev_opaque(_indio_dev) \ |
80 | container_of((_indio_dev), struct iio_dev_opaque, indio_dev) |
81 | |
82 | #endif |
83 | |