linux-kernel - Re: PROBLEM: lenovo yoga 11e touchscreen (baytrail SoC) does not work on 4.0.0 rc2

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Date:	Tue, 10 Mar 2015 12:52:44 -0400
From:	Matthew Hiles <matthew.hiles@...il.com>
To:	Mika Westerberg <mika.westerberg@...ux.intel.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: PROBLEM: lenovo yoga 11e touchscreen (baytrail SoC) does not
 work on 4.0.0 rc2



On 03/10/2015 10:23 AM, Mika Westerberg wrote:
> On Wed, Mar 04, 2015 at 05:35:22PM -0500, Matthew Hiles wrote:
>> [    3.763182] i2c_hid i2c-ITE8386:00: Could not register for ITE8386:00 interrupt, irq = -1, ret = -22
>> [    3.773742] i2c_hid: probe of i2c-ITE8386:00 failed with error -22
>> [    3.788298] i2c_hid i2c-ATML1000:00: Could not register for ATML1000:00 interrupt, irq = -1, ret = -22
>> [    3.806867] i2c_hid: probe of i2c-ATML1000:00 failed with error -22
> This says to me that the device uses GPIOs as interrupts as opposed to
> IOAPIC.
>
> Can you try the following commit?
>
> https://git.kernel.org/cgit/linux/kernel/git/jikos/hid.git/commit/?h=for-4.1/i2c-hid&id=a485923efbb83056b7fb79e4fd2fee05c990ad5e

Progress! Applied that patch to 4.0 rc3 and recompiled:

uname -a
Linux pontifex 4.0.0-1-ARCH #2 SMP PREEMPT Tue Mar 10 11:54:37 EDT 2015 
x86_64 GNU/Linux

dmesg|grep  hid
[    3.850715] hidraw: raw HID events driver (C) Jiri Kosina
[    8.873837] i2c_hid i2c-ITE8386:00: failed to reset device.
[   14.895347] i2c_hid i2c-ITE8386:00: failed to reset device.
[   20.916806] i2c_hid i2c-ITE8386:00: failed to reset device.
[   26.938430] i2c_hid i2c-ITE8386:00: failed to reset device.
[   27.956009] i2c_hid i2c-ITE8386:00: can't add hid device: -61
[   27.976242] i2c_hid: probe of i2c-ITE8386:00 failed with error -61
[   28.028155] hid-multitouch 0018:03EB:8C1F.0001: input,hidraw0: 
<UNKNOWN> HID v1.00 Device [ATML1000:00 03EB:8C1F] on

xinput
⎡ Virtual core pointer                          id=2    [master pointer  
(3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=13   [slave pointer  (2)]
⎜   ↳ ATML1000:00 03EB:8C1F                     id=14   [slave pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard 
(2)]
     ↳ Virtual core XTEST keyboard               id=5    [slave keyboard 
(3)]
     ↳ Power Button                              id=6    [slave keyboard 
(3)]
     ↳ Video Bus                                 id=7    [slave keyboard 
(3)]
     ↳ Power Button                              id=8    [slave keyboard 
(3)]
     ↳ Sleep Button                              id=9    [slave keyboard 
(3)]
     ↳ Integrated Camera                         id=10   [slave keyboard 
(3)]
     ↳ AT Translated Set 2 keyboard              id=11   [slave keyboard 
(3)]
     ↳ ThinkPad Extra Buttons                    id=12   [slave keyboard 
(3)]

However, touching the screen does not cause the pointer to move and more 
empirically:

(From /proc/bus/input/devices)

I: Bus=0018 Vendor=03eb Product=8c1f Version=0100
N: Name="ATML1000:00 03EB:8C1F"
P: Phys=
S: 
Sysfs=/devices/platform/80860F41:01/i2c-9/i2c-ATML1000:00/0018:03EB:8C1F.0001/input/input15
U: Uniq=
H: Handlers=event14 mouse1
B: PROP=2
B: EV=b
B: KEY=400 0 0 0 0 0
B: ABS=260800000000003

Doing
     cat /dev/input/event14
or
     cat /dev/input/mouse1

and poking the screen gets me no output.


~Matthew
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