Hi Dmitry,
> Am 20.02.2017 um 02:10 schrieb Dmitry Torokhov <dmitry.torok...@gmail.com>:
>
> On Sat, Feb 18, 2017 at 03:58:39PM +0100, H. Nikolaus Schaller wrote:
>> Hi Dmitry,
>>
>>> Am 17.02.2017 um 23:56 schrieb Dmitry Torokhov <dmitry.torok...@gmail.com>:
>>>
>>> Do not manipulate evbit/keybit directly, use helper for that.
>>>
>>> Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
>>> ---
>>> drivers/input/touchscreen/tsc2007_core.c | 3 +--
>>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/input/touchscreen/tsc2007_core.c
>>> b/drivers/input/touchscreen/tsc2007_core.c
>>> index fdf81a2b989a..98dbefc3357d 100644
>>> --- a/drivers/input/touchscreen/tsc2007_core.c
>>> +++ b/drivers/input/touchscreen/tsc2007_core.c
>>> @@ -364,8 +364,7 @@ static int tsc2007_probe(struct i2c_client *client,
>>>
>>> input_set_drvdata(input_dev, ts);
>>>
>>> - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
>>> - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
>>> + input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
>>
>> basically a good improvement, but removing the BIT_MASK(EV_ABS) makes
>> problems
>> when replacing the next lines
>>
>>>
>>> input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, ts->fuzzx, 0);
>>> input_set_abs_params(input_dev, ABS_Y, 0, MAX_12BIT, ts->fuzzy, 0);
>>
>> by touchscreen_parse_properties() as done by my patch set.
>>
>> The problem is that touchscreen_parse_properties() does not call
>> input_set_abs_params() but touchscreen_set_params(). This does not
>> call some input_set_capability(dev, EV_ABS, axis) but rather checks
>> that it has been set before! Hence we only see warnings in the log and
>> no input event properties (BTN_TOUCH works but without position
>> information).
>
> Yes, the driver is supposed to set defaults, then OF data may augment
> them (or it may omit them and leave driver's defaults).
Ok.
> You should not
> have removed calls to
>
> input_set_abs_params(input_dev, ABS_X, 0, MAX_12BIT, ts->fuzzx, 0);
Wouldn't it suffice to call
input_set_capability(input_dev, EV_ABS, ABS_X);
input_set_capability(input_dev, EV_ABS, ABS_Y);
since fuzz default is already 0?
BR,
Nikolaus
