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 * @info_exist_lock: lock to prevent use during removal 15 * @trig_readonly: mark the current trigger immutable 16 * @event_interface: event chrdevs associated with interrupt lines 17 * @attached_buffers: array of buffers statically attached by the driver 18 * @attached_buffers_cnt: number of buffers in the array of statically attached buffers 19 * @buffer_ioctl_handler: ioctl() handler for this IIO device's buffer interface 20 * @buffer_list: list of all buffers currently attached 21 * @channel_attr_list: keep track of automatically created channel 22 * attributes 23 * @chan_attr_group: group for all attrs in base directory 24 * @ioctl_handlers: ioctl handlers registered with the core handler 25 * @groups: attribute groups 26 * @groupcounter: index of next attribute group 27 * @legacy_scan_el_group: attribute group for legacy scan elements attribute group 28 * @legacy_buffer_group: attribute group for legacy buffer attributes group 29 * @bounce_buffer: for devices that call iio_push_to_buffers_with_timestamp_unaligned() 30 * @bounce_buffer_size: size of currently allocate bounce buffer 31 * @scan_index_timestamp: cache of the index to the timestamp 32 * @clock_id: timestamping clock posix identifier 33 * @chrdev: associated character device 34 * @flags: file ops related flags including busy flag. 35 * @debugfs_dentry: device specific debugfs dentry 36 * @cached_reg_addr: cached register address for debugfs reads 37 * @read_buf: read buffer to be used for the initial reg read 38 * @read_buf_len: data length in @read_buf 39 */ 40 struct iio_dev_opaque { 41 struct iio_dev indio_dev; 42 int currentmode; 43 int id; 44 struct module *driver_module; 45 struct mutex info_exist_lock; 46 bool trig_readonly; 47 struct iio_event_interface *event_interface; 48 struct iio_buffer **attached_buffers; 49 unsigned int attached_buffers_cnt; 50 struct iio_ioctl_handler *buffer_ioctl_handler; 51 struct list_head buffer_list; 52 struct list_head channel_attr_list; 53 struct attribute_group chan_attr_group; 54 struct list_head ioctl_handlers; 55 const struct attribute_group **groups; 56 int groupcounter; 57 struct attribute_group legacy_scan_el_group; 58 struct attribute_group legacy_buffer_group; 59 void *bounce_buffer; 60 size_t bounce_buffer_size; 61 62 unsigned int scan_index_timestamp; 63 clockid_t clock_id; 64 struct cdev chrdev; 65 unsigned long flags; 66 67 #if defined(CONFIG_DEBUG_FS) 68 struct dentry *debugfs_dentry; 69 unsigned cached_reg_addr; 70 char read_buf[20]; 71 unsigned int read_buf_len; 72 #endif 73 }; 74 75 #define to_iio_dev_opaque(_indio_dev) \ 76 container_of((_indio_dev), struct iio_dev_opaque, indio_dev) 77 78 #endif 79