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

NAME

struct_iio_buffer - general buffer structure

SYNOPSIS

struct iio_buffer {


  int length;


  int bytes_per_datum;


  struct attribute_group * scan_el_attrs;


  long * scan_mask;


  bool scan_timestamp;


  const struct iio_buffer_access_funcs * access;


  struct list_head scan_el_dev_attr_list;


  struct attribute_group buffer_group;


  struct attribute_group scan_el_group;


  wait_queue_head_t pollq;


  bool stufftoread;


  const struct attribute ** attrs;


  struct list_head demux_list;


  void * demux_bounce;


  struct list_head buffer_list;


  struct kref ref;


  unsigned int watermark;
};

MEMBERS

length

[DEVICE] number of datums in buffer

bytes_per_datum

[DEVICE] size of individual datum including timestamp

scan_el_attrs

[DRIVER] control of scan elements if that scan mode control method is used

scan_mask

[INTERN] bitmask used in masking scan mode elements

scan_timestamp

[INTERN] does the scan mode include a timestamp

access

[DRIVER] buffer access functions associated with the implementation.

scan_el_dev_attr_list

[INTERN] list of scan element related attributes.

buffer_group

[INTERN] attributes of the buffer group

scan_el_group

[DRIVER] attribute group for those attributes not created from the iio_chan_info array.

pollq

[INTERN] wait queue to allow for polling on the buffer.

stufftoread

[INTERN] flag to indicate new data.

attrs

[INTERN] standard attributes of the buffer

demux_list

[INTERN] list of operations required to demux the scan.

demux_bounce

[INTERN] buffer for doing gather from incoming scan.

buffer_list

[INTERN] entry in the devices list of current buffers.

ref

[INTERN] reference count of the buffer.

watermark

[INTERN] number of datums to wait for poll/read.

AUTHOR

Daniel Baluta <daniel.baluta@intel.com>

Author.

COPYRIGHT

June 2017 Kernel Hackers Manual 4.9.