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STRUCT IIO_DEV(9) Industrial I/O core STRUCT IIO_DEV(9)

NAME

struct_iio_dev - industrial I/O device

SYNOPSIS

struct iio_dev {
  int id;
  int modes;
  int currentmode;
  struct device dev;
  struct iio_event_interface * event_interface;
  struct iio_buffer * buffer;
  struct list_head buffer_list;
  int scan_bytes;
  struct mutex mlock;
  const unsigned long * available_scan_masks;
  unsigned masklength;
  const unsigned long * active_scan_mask;
  bool scan_timestamp;
  unsigned scan_index_timestamp;
  struct iio_trigger * trig;
  struct iio_poll_func * pollfunc;
  struct iio_poll_func * pollfunc_event;
  struct iio_chan_spec const * channels;
  int num_channels;
  struct list_head channel_attr_list;
  struct attribute_group chan_attr_group;
  const char * name;
  const struct iio_info * info;
  clockid_t clock_id;
  struct mutex info_exist_lock;
  const struct iio_buffer_setup_ops * setup_ops;
  struct cdev chrdev;
#define IIO_MAX_GROUPS 6
  const struct attribute_group * groups[IIO_MAX_GROUPS + 1];
  int groupcounter;
  unsigned long flags;
#if defined(CONFIG_DEBUG_FS)
  struct dentry * debugfs_dentry;
  unsigned cached_reg_addr;
#endif
};

MEMBERS

id
[INTERN] used to identify device internally

modes

[DRIVER] operating modes supported by device

currentmode

[DRIVER] current operating mode

dev

[DRIVER] device structure, should be assigned a parent and owner

event_interface

[INTERN] event chrdevs associated with interrupt lines

buffer

[DRIVER] any buffer present

buffer_list

[INTERN] list of all buffers currently attached

scan_bytes

[INTERN] num bytes captured to be fed to buffer demux

mlock

[DRIVER] lock used to prevent simultaneous device state changes

available_scan_masks

[DRIVER] optional array of allowed bitmasks

masklength

[INTERN] the length of the mask established from channels

active_scan_mask

[INTERN] union of all scan masks requested by buffers

scan_timestamp

[INTERN] set if any buffers have requested timestamp

scan_index_timestamp

[INTERN] cache of the index to the timestamp

trig

[INTERN] current device trigger (buffer modes) trig_readonly [INTERN] mark the current trigger immutable

pollfunc

[DRIVER] function run on trigger being received

pollfunc_event

[DRIVER] function run on events trigger being received

channels

[DRIVER] channel specification structure table

num_channels

[DRIVER] number of channels specified in channels.

channel_attr_list

[INTERN] keep track of automatically created channel attributes

chan_attr_group

[INTERN] group for all attrs in base directory

name

[DRIVER] name of the device.

info

[DRIVER] callbacks and constant info from driver

clock_id

[INTERN] timestamping clock posix identifier

info_exist_lock

[INTERN] lock to prevent use during removal

setup_ops

[DRIVER] callbacks to call before and after buffer enable/disable

chrdev

[INTERN] associated character device

groups[IIO_MAX_GROUPS + 1]

[INTERN] attribute groups

groupcounter

[INTERN] index of next attribute group

flags

[INTERN] file ops related flags including busy flag.

debugfs_dentry

[INTERN] device specific debugfs dentry.

cached_reg_addr

[INTERN] cached register address for debugfs reads.

AUTHOR

Daniel Baluta <daniel.baluta@intel.com>
Author.

COPYRIGHT

April 2019 Kernel Hackers Manual 4.9.