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Message-ID: <2097516.kqJHpBxff0@phil>
Date: Mon, 11 May 2015 22:51:47 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Alexandru Stan <amstan@...omium.org>
Cc: Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
Lee Jones <lee.jones@...aro.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
Olof Johansson <olof@...om.net>,
Doug Anderson <dianders@...omium.org>,
Bill Richardson <wfrichar@...omium.org>,
Simon Glass <sjg@...gle.com>,
Gwendal Grignou <gwendal@...gle.com>,
Stephen Barber <smbarber@...omium.org>,
Filipe Brandenburger <filbranden@...gle.com>,
Todd Broch <tbroch@...omium.org>,
linux-samsung-soc@...r.kernel.org,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 00/10] mfd: cros_ec: Add multi EC and proto v3 support
Am Montag, 11. Mai 2015, 13:08:27 schrieb Alexandru Stan:
> On Mon, May 11, 2015 at 10:53 AM, Heiko Stuebner <heiko@...ech.de> wrote:
> > Doing an evtest /dev/input/event0 does not result in key events, now after
> > some keypresses I got a
> > [ 48.352023] cros-ec-spi spi0.0: EC failed to respond in time
> > [ 48.357695] cros-ec-spi spi0.0: Error transferring EC message -110
> > [ 48.363884] cros-ec-spi spi0.0: failed to get keyboard state: -110
> > [ 226.478588] cros-ec-spi spi0.0: Error transferring EC message -11
> > [ 226.484690] cros-ec-spi spi0.0: failed to get keyboard state: -11 well
> > as the touchpad) the keyboard
> At first I tought it was because your EC firmware version is pretty old.
> A while ago we fixed a pretty nasty scheduler bug that would have
> caused similar symptoms:
> https://chromium-review.googlesource.com/#/c/248681/
>
> I did my own testing with the trees you provided (v1 and v2) on
> veyron-minnie and
> I can definatelly confirm that v2 is broken.
for completenes sake, branches in use where:
clean apply of v2 on top of 4.1-rc3 + clk-next
(already emits the error when using evtest):
https://github.com/mmind/linux-rockchip/commits/tmp/crosec_v3_2
merged into working branch that produces something usable for veyron devices:
https://github.com/mmind/linux-rockchip/commits/devel/somewhat-stable
same branch rolled back to patch-series v1
(working keyboard on both pinky and minnie):
https://github.com/mmind/linux-rockchip/commits/tmp/cros_ec_to_v1
I'm at least somewhat sure, that there shouldn't be any big merge errors in
there :-)
>
> Here's a snippet of what a key press generates on the EC log:
> > [950.749097 KB poll]
>
> [950.760357 HC 0x60]
> [950.760555 HC err 6]
> +[950.903657 HC 0x60]
> [950.905243 HC err 6]
> +[950.926239 KB wait]
>
> Same key press on v1:
> > [37.107390 KB poll]
>
> [37.118457 HC 0x60]
> [37.209218 HC 0x60]
> [37.278431 KB wait]
>
> In the EC code, error 6 is defined as EC_RES_INVALID_VERSION.
>
> > in my very first try it started similarly non-working but after some time
> > started magically working again, but now in subsequent tries I always get
> > the spi error + working keyboard after a reboot.
>
> At first the keyboard doesn't work for me either (20 or so seconds).
> Then all keys show up and everything's fine (besides the errors on the EC
> log).
> > Strangely this really seems to be limited to the keyboard, touchpad works
> > flawlessly it seems.
>
> Touchpad doesn't go through the EC, it's just a standard i2c device
> directly connected to the AP.
I should've looked at the dts before then to not overlook this ;-)
Heiko
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