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 * @event_interface: event chrdevs associated with interrupt lines 10 * @buffer_list: list of all buffers currently attached 11 * @channel_attr_list: keep track of automatically created channel 12 * attributes 13 * @chan_attr_group: group for all attrs in base directory 14 * @ioctl_handlers: ioctl handlers registered with the core handler 15 * @debugfs_dentry: device specific debugfs dentry 16 * @cached_reg_addr: cached register address for debugfs reads 17 * @read_buf: read buffer to be used for the initial reg read 18 * @read_buf_len: data length in @read_buf 19 */ 20 struct iio_dev_opaque { 21 struct iio_dev indio_dev; 22 struct iio_event_interface *event_interface; 23 struct list_head buffer_list; 24 struct list_head channel_attr_list; 25 struct attribute_group chan_attr_group; 26 struct list_head ioctl_handlers; 27 #if defined(CONFIG_DEBUG_FS) 28 struct dentry *debugfs_dentry; 29 unsigned cached_reg_addr; 30 char read_buf[20]; 31 unsigned int read_buf_len; 32 #endif 33 }; 34 35 #define to_iio_dev_opaque(indio_dev) \ 36 container_of(indio_dev, struct iio_dev_opaque, indio_dev) 37 38 #endif 39