Re: [PATCH] Input: improve autorepeat initialization

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Hi Dmitry,

On Fri, Oct 9, 2015 at 5:15 PM, Dmitry Torokhov
<dmitry.torokhov@xxxxxxxxx> wrote:
> Hi Petri,
>
> On Fri, Oct 09, 2015 at 02:10:01PM -0700, Petri Gynther wrote:
>> Allow driver to initialize only input_dev->rep[REP_DELAY] and
>> input_dev->rep[REP_PERIOD], but then use the input timer and
>> repeat function 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;
>> }
>>
>> static struct hid_driver xyz_driver = {
>>         .input_configured = xyz_input_configured,
>> }
>>
>
> This will break drivers that either support hardware autorepeat (such as
> atkbd) or ones that implement autorepeat themselves. If you want support
> "starting" repeat rate/delay as you are proposing we need alternative
> way of telling input core whether it should engage generic autorepeat
> code or not. Maybe we should simply add a "softrepeat" flag in input_dev
> structure and call it day.
>
> Thanks.
>

Thanks for pointing this out. I'll add softrepeat flag to input_dev.
Sending patch v2 shortly.

>> Signed-off-by: Petri Gynther <pgynther@xxxxxxxxxx>
>> ---
>>  drivers/input/input.c | 9 +++++++++
>>  1 file changed, 9 insertions(+)
>>
>> diff --git a/drivers/input/input.c b/drivers/input/input.c
>> index 5391abd..1984ba5 100644
>> --- a/drivers/input/input.c
>> +++ b/drivers/input/input.c
>> @@ -2115,6 +2115,15 @@ int input_register_device(struct input_dev *dev)
>>               dev->rep[REP_PERIOD] = 33;
>>       }
>>
>> +     /*
>> +      * If the driver didn't initialize the timer data and function, then
>> +      * handle the autorepeating here in input.c.
>> +      */
>> +     if (!dev->timer.data && !dev->timer.function) {
>> +             dev->timer.data = (unsigned long) dev;
>> +             dev->timer.function = input_repeat_key;
>> +     }
>> +
>>       if (!dev->getkeycode)
>>               dev->getkeycode = input_default_getkeycode;
>>
>> --
>> 2.6.0.rc2.230.g3dd15c0
>>
>
> --
> Dmitry
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