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Input: uinput - add UI_GET_VERSION ioctl

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This ioctl is the counterpart to EVIOCGVERSION and returns the
uinput-version the kernel was compiled with.

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
David Herrmann 2014-07-20 17:27:09 -07:00 • committed by Dmitry Torokhov
parent bcb898e587
commit ba4e9a61ad
2 changed files with 15 additions and 0 deletions
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9
include/uapi/linux/uinput.h
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@ -84,6 +84,15 @@ struct uinput_ff_erase {
*/
#define UI_GET_SYSNAME(len) _IOC(_IOC_READ, UINPUT_IOCTL_BASE, 300, len)
/**
* UI_GET_VERSION - Return version of uinput protocol
*
* This writes uinput protocol version implemented by the kernel into
* the integer pointed to by the ioctl argument. The protocol version
* is hard-coded in the kernel and is independent of the uinput device.
*/
#define UI_GET_VERSION _IOR(UINPUT_IOCTL_BASE, 301, unsigned int)
/*
* To write a force-feedback-capable driver, the upload_effect
* and erase_effect callbacks in input_dev must be implemented.