Re: [PATCH v2] Input: improve autorepeat initialization

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Hi Dmitry,

On Mon, Oct 12, 2015 at 12:04 PM, Petri Gynther <pgynther@xxxxxxxxxx> wrote:
> Allow driver to initialize its own values for input_dev->rep[REP_DELAY]
> and input_dev->rep[REP_PERIOD], but also use the software autorepeat
> functionality from input.c.
>
> For example, a HID driver could do:
>
> static void xyz_input_configured(struct hid_device *hid,
>                                  struct hid_input *hidinput)
> {
>         hidinput->input->rep[REP_DELAY] = 400;
>         hidinput->input->rep[REP_PERIOD] = 100;
>         hidinput->input->softrepeat = true;
> }
>
> static struct hid_driver xyz_driver = {
>         .input_configured = xyz_input_configured,
> }
>
> Signed-off-by: Petri Gynther <pgynther@xxxxxxxxxx>
> ---
>  drivers/input/input.c | 9 +++++++--
>  include/linux/input.h | 1 +
>  2 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/input.c b/drivers/input/input.c
> index 5391abd..a6f65c7 100644
> --- a/drivers/input/input.c
> +++ b/drivers/input/input.c
> @@ -2106,13 +2106,18 @@ int input_register_device(struct input_dev *dev)
>
>         /*
>          * If delay and period are pre-set by the driver, then autorepeating
> -        * is handled by the driver itself and we don't do it in input.c.
> +        * is handled by the driver itself and we don't do it in input.c
> +        * unless the driver also requests softrepeat.
>          */
>         if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) {
> -               dev->timer.data = (long) dev;
> +               dev->softrepeat = true;
> +               dev->timer.data = (unsigned long) dev;
>                 dev->timer.function = input_repeat_key;
>                 dev->rep[REP_DELAY] = 250;
>                 dev->rep[REP_PERIOD] = 33;

Please ignore this patch v2.
Better solution is to move the code from if-statement to an exported
function and call it here and from drivers when desired.
Sending patch v3 shortly.

> +       } else if (dev->softrepeat) {
> +               dev->timer.data = (unsigned long) dev;
> +               dev->timer.function = input_repeat_key;
>         }
>
>         if (!dev->getkeycode)
> diff --git a/include/linux/input.h b/include/linux/input.h
> index 82ce323..2535948 100644
> --- a/include/linux/input.h
> +++ b/include/linux/input.h
> @@ -150,6 +150,7 @@ struct input_dev {
>
>         struct ff_device *ff;
>
> +       bool softrepeat;
>         unsigned int repeat_key;
>         struct timer_list timer;
>
> --
> 2.6.0.rc2.230.g3dd15c0
>
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