include/linux/iio/iio-opaque.h

   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