'\" t
.\"     Title: struct input_polled_dev
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Input Subsystem
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "STRUCT INPUT_POLLED_" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Input Subsystem"
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.SH "NAME"
struct_input_polled_dev \- simple polled input device
.SH "SYNOPSIS"
.sp
.nf
struct input_polled_dev {
  void * private;
  void (* open) (struct input_polled_dev *dev);
  void (* close) (struct input_polled_dev *dev);
  void (* poll) (struct input_polled_dev *dev);
  unsigned int poll_interval;
  unsigned int poll_interval_max;
  unsigned int poll_interval_min;
  struct input_dev * input;
};  
.fi
.SH "MEMBERS"
.PP
private
.RS 4
private driver data\&.
.RE
.PP
open
.RS 4
driver\-supplied method that prepares device for polling (enabled the device and maybe flushes device state)\&.
.RE
.PP
close
.RS 4
driver\-supplied method that is called when device is no longer being polled\&. Used to put device into low power mode\&.
.RE
.PP
poll
.RS 4
driver\-supplied method that polls the device and posts input events (mandatory)\&.
.RE
.PP
poll_interval
.RS 4
specifies how often the
\fBpoll\fR
method should be called\&. Defaults to 500 msec unless overridden when registering the device\&.
.RE
.PP
poll_interval_max
.RS 4
specifies upper bound for the poll interval\&. Defaults to the initial value of
\fIpoll_interval\fR\&.
.RE
.PP
poll_interval_min
.RS 4
specifies lower bound for the poll interval\&. Defaults to 0\&.
.RE
.PP
input
.RS 4
input device structure associated with the polled device\&. Must be properly initialized by the driver (id, name, phys, bits)\&.
.RE
.SH "DESCRIPTION"
.PP
Polled input device provides a skeleton for supporting simple input devices that do not raise interrupts but have to be periodically scanned or polled to detect changes in their state\&.
.SH "COPYRIGHT"
.br