On Jun 02 2016 or thereabouts, Andy Shevchenko wrote:

On Thu, 2016-06-02 at 16:11 +0200, Benjamin Tissoires wrote:

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On May 31 2016 or thereabouts, Andy Shevchenko wrote:

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On Tue, 2016-05-31 at 18:07 +0200, Benjamin Tissoires wrote:

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On May 20 2016 or thereabouts, Benjamin Tissoires wrote:

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On May 13 2016 or thereabouts, Andy Shevchenko wrote:
Would you mind sending me a hid-recorder[1] trace of the device
while
typing few keys and using the touchpad?

quoted

OK, so it looks like your touchpad stays in the mouse emulation mode
for
some reasons. Did you do the recordings with hid-multitouch patched,
or
with plain hid-generic or an other one?

I take linux-next + your two patches from this thread (+ some unrelated
to HID patches).

OK. I think I know what happened:
- Microsoft forgot to put the Win 8 certification blob in this
  particular device (of course, because Microsoft)
- we do not detect it as a Win 8 certified and do not set the
  HID_QUIRK_NO_INIT_REPORTS flag
- your dmesg should show some error on plug, and then hid can't set the
  input mode
- I can't add a "if win 8 then show the mouse collection" because your
  device doesn't report itself as win 8 :)

Anyway, could you try applying this small diff after my 2 patches and
report if you now have a working touchpad?:

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index ac35731..e51a753 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c

@@ -1379,6 +1379,10 @@ static const struct hid_device_id mt_devices[] = {
                MT_USB_DEVICE(USB_VENDOR_ID_ILITEK,
                        USB_DEVICE_ID_ILITEK_MULTITOUCH) },
 
+       /* Microsoft */
+       { .driver_data = MT_CLS_WIN_8,
+               MT_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, 0x07cd) },
+
        /* MosArt panels */
        { .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
                MT_USB_DEVICE(USB_VENDOR_ID_ASUS,

---

Cheers,
Benjamin

quoted

After further thoughts, I think it should be acceptable to enable the
mouse collection for Win 8 certified devices. Touchscreens are not
supposed to expose such a mouse emulation, so that would mean that
only
touchpad will export one.

quoted

I'll come with a patch by the end of the week (hopefully).

Cc me and I will test 'em.


-- 
Andy Shevchenko [off-list ref]
Intel Finland Oy

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