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?

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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

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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.

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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