Are you there?
Should I re-post the v2 patch, was that dropped somehow?
If I don't hear anything I'll assume I just repost, probably
as unchanged v3, right?
Thanks,
Bernd.
On 4/5/20 7:54 AM, Bernd Edlinger wrote:
> And, furthermore, there is one thing I find really confusing,
>
> I do not see the message v2 quoted below which had an updated commit message,
> due to that Benjamin Tissoires request.
>
> It was from my point of view sent on 2/27/20 11:03 PM,
> but I cannot find it neither on spinics, nor on marc.info.
> That is funny.
>
> Did it reach you guys at all?
> Or should I re-send it just in case?
>
>
> Thanks
> Bernd.
>
> On 4/5/20 7:26 AM, Bernd Edlinger wrote:
>> Ping...
>>
>> This patch works fine for me since several weeks,
>> without it I would not be able to use my laptop any more.
>>
>> Could you please accept this patch?
>>
>>
>> Thanks
>> Bernd.
>>
>>
>> On 2/27/20 11:03 PM, Bernd Edlinger wrote:
>>> Since commit 37548659bb22 ("Input: elantech - query the min/max information beforehand too")
>>> moved the querying of the x_max/y_max values from
>>> elantech_set_input_params to elantech_query_info,
>>> the returned x_max/y_max values are different than before,
>>> at least for some firmware versions.
>>>
>>> The reason is likely that this is now done before
>>> elantech_set_absolute_mode does run. So it may happen that
>>> the returned values are exactly half of what they used to be,
>>> which makes input_report_abs in PS/2 mode report ABS_X values which
>>> exceed the x_max value, which is very annoying since the mouse stops
>>> to move then, and ABS_Y value become negative, which is benign.
>>>
>>> This was observed with a MSI GX70 laptop:
>>>
>>> elantech: assuming hardware version 3 (with firmware version 0x250f01)
>>> elantech: Synaptics capabilities query result 0x18, 0x17, 0x0b.
>>> elantech: Elan sample query result 05, 0e, 00
>>> input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio...
>>>
>>> Correct this by doubling the returned x_max and y_max
>>> value for this specific firmware version.
>>>
>>> Fixes: 37548659bb22 ("Input: elantech - query the min/max information beforehand too")
>>>
>>> Signed-off-by: Bernd Edlinger <bernd.edlinger@xxxxxxxxxx>
>>> ---
>>> drivers/input/mouse/elantech.c | 4 ++++
>>> 1 file changed, 4 insertions(+)
>>>
>>> diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
>>> index 2d8434b..3399db8 100644
>>> --- a/drivers/input/mouse/elantech.c
>>> +++ b/drivers/input/mouse/elantech.c
>>> @@ -1720,6 +1720,10 @@ static int elantech_query_info(struct psmouse *psmouse,
>>>
>>> info->x_max = (0x0f & param[0]) << 8 | param[1];
>>> info->y_max = (0xf0 & param[0]) << 4 | param[2];
>>> + if (info->fw_version == 0x250f01) {
>>> + info->x_max <<= 1;
>>> + info->y_max <<= 1;
>>> + }
>>> break;
>>>
>>> case 4:
>>>
