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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _INDUSTRIAL_IO_OPAQUE_H_
- #define _INDUSTRIAL_IO_OPAQUE_H_
- /**
- * struct iio_dev_opaque - industrial I/O device opaque information
- * @indio_dev: public industrial I/O device information
- * @id: used to identify device internally
- * @currentmode: operating mode currently in use, may be eventually
- * checked by device drivers but should be considered
- * read-only as this is a core internal bit
- * @driver_module: used to make it harder to undercut users
- * @mlock_key: lockdep class for iio_dev lock
- * @info_exist_lock: lock to prevent use during removal
- * @trig_readonly: mark the current trigger immutable
- * @event_interface: event chrdevs associated with interrupt lines
- * @attached_buffers: array of buffers statically attached by the driver
- * @attached_buffers_cnt: number of buffers in the array of statically attached buffers
- * @buffer_ioctl_handler: ioctl() handler for this IIO device's buffer interface
- * @buffer_list: list of all buffers currently attached
- * @channel_attr_list: keep track of automatically created channel
- * attributes
- * @chan_attr_group: group for all attrs in base directory
- * @ioctl_handlers: ioctl handlers registered with the core handler
- * @groups: attribute groups
- * @groupcounter: index of next attribute group
- * @legacy_scan_el_group: attribute group for legacy scan elements attribute group
- * @legacy_buffer_group: attribute group for legacy buffer attributes group
- * @bounce_buffer: for devices that call iio_push_to_buffers_with_timestamp_unaligned()
- * @bounce_buffer_size: size of currently allocate bounce buffer
- * @scan_index_timestamp: cache of the index to the timestamp
- * @clock_id: timestamping clock posix identifier
- * @chrdev: associated character device
- * @flags: file ops related flags including busy flag.
- * @debugfs_dentry: device specific debugfs dentry
- * @cached_reg_addr: cached register address for debugfs reads
- * @read_buf: read buffer to be used for the initial reg read
- * @read_buf_len: data length in @read_buf
- */
- struct iio_dev_opaque {
- struct iio_dev indio_dev;
- int currentmode;
- int id;
- struct module *driver_module;
- struct lock_class_key mlock_key;
- struct mutex info_exist_lock;
- bool trig_readonly;
- struct iio_event_interface *event_interface;
- struct iio_buffer **attached_buffers;
- unsigned int attached_buffers_cnt;
- struct iio_ioctl_handler *buffer_ioctl_handler;
- struct list_head buffer_list;
- struct list_head channel_attr_list;
- struct attribute_group chan_attr_group;
- struct list_head ioctl_handlers;
- const struct attribute_group **groups;
- int groupcounter;
- struct attribute_group legacy_scan_el_group;
- struct attribute_group legacy_buffer_group;
- void *bounce_buffer;
- size_t bounce_buffer_size;
- unsigned int scan_index_timestamp;
- clockid_t clock_id;
- struct cdev chrdev;
- unsigned long flags;
- #if defined(CONFIG_DEBUG_FS)
- struct dentry *debugfs_dentry;
- unsigned cached_reg_addr;
- char read_buf[20];
- unsigned int read_buf_len;
- #endif
- };
- #define to_iio_dev_opaque(_indio_dev) \
- container_of((_indio_dev), struct iio_dev_opaque, indio_dev)
- #endif
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