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Message-Id: <20250208173554.209688-1-brendanjconnelly17@gmail.com> Date: Sat, 8 Feb 2025 12:35:54 -0500 From: Brendan Connelly <brendanjconnelly17@...il.com> To: corbet@....net Cc: linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org, dmitry.torokhov@...il.com Subject: [PATCH] Documentation: input: Add section pertaining to polled input devices Added section in Documentation/input/input-programming.rst about input_setup_polling() and input_set_poll_interval() Signed-off-by: Brendan Connelly <brendanjconnelly17@...il.com> --- Documentation/input/input-programming.rst | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/Documentation/input/input-programming.rst b/Documentation/input/input-programming.rst index c9264814c7aa..2b3e6a34e34b 100644 --- a/Documentation/input/input-programming.rst +++ b/Documentation/input/input-programming.rst @@ -346,3 +346,22 @@ driver can handle these events, it has to set the respective bits in evbit, This callback routine can be called from an interrupt or a BH (although that isn't a rule), and thus must not sleep, and must not take too long to finish. + +Polled input devices +~~~~~~~~~~~~~~~~~~~~ + +Input polling is set up by passing an input device struct and a callback to +the function:: + + int input_setup_polling(struct input_dev *dev, + void (*poll_fn)(struct input_dev *dev)) + +Within the callback, devices should use the regular input_report_* functions +and input_sync as is used by other devices. + +There is also the function:: + + void input_set_poll_interval(struct input_dev *dev, unsigned int interval) + +which is used to configure the interval, in milliseconds, that the device will +be polled at. -- 2.39.5
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