struct input_polled

struct input_polled_dev
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Name

struct input_polled_dev — simple polled input device

Synopsis

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;
};

Members

private: private driver data.
open: driver-supplied method that prepares device for polling (enabled the device and maybe flushes device state).
close: driver-supplied method that is called when device is no longer being polled. Used to put device into low power mode.
poll: driver-supplied method that polls the device and posts input events (mandatory).
poll_interval: specifies how often the poll method should be called. Defaults to 500 msec unless overridden when registering the device.
poll_interval_max: specifies upper bound for the poll interval. Defaults to the initial value of poll_interval.
poll_interval_min: specifies lower bound for the poll interval. Defaults to 0.
input: input device structure associated with the polled device. Must be properly initialized by the driver (id, name, phys, bits).

Description

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.