From: Maximilian Luz <luzmaximilian@gmail.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
Daniel Scally <djrscally@gmail.com>,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Revert "pinctrl: intel: Split intel_pinctrl_add_padgroups() for better maintenance"
Date: Mon, 8 Mar 2021 17:32:46 +0100 [thread overview]
Message-ID: <c306b082-f97a-96d8-1291-78ff14c4ea88@gmail.com> (raw)
In-Reply-To: <YEZEX+BCw21O6rmT@smile.fi.intel.com>
On 3/8/21 4:35 PM, Andy Shevchenko wrote:
> On Mon, Mar 08, 2021 at 04:25:05PM +0100, Maximilian Luz wrote:
>> Following commit 036e126c72eb ("pinctrl: intel: Split
>> intel_pinctrl_add_padgroups() for better maintenance"),
>> gpiochip_get_desc() is broken on some Kaby Lake R devices (specifically
>> a Microsoft Surface Book 2), returning -EINVAL for GPIOs that in reality
>> should be there (they are defined in ACPI and have been accessible
>> previously). Due to this, gpiod_get() fails with -ENOENT.
>>
>> Reverting this commit fixes that issue and the GPIOs in question are
>> accessible again.
>
> I would like to have more information.
> Can you enable PINCTRL and GPIO debug options in the kernel, and show dmesg
> output (when kernel command line has 'ignore_loglevel' option) for both working
> and non-working cases?
Sure.
Here are dmesg logs for:
- Kernel v5.12-rc2 (not working): https://paste.ubuntu.com/p/HVZybcvQDH/
- Kernel v5.12-rc2 with 036e126c72eb reverted: https://paste.ubuntu.com/p/hwcXFvhcBd/
> Also if it's possible to have DSDT.dsl of the device in question along with
> output of `grep -H 15 /sys/bus/acpi/devices/*/status`.
You can find the DSDT and a full ACPI dump at [1] and GPIOs that fail at
[2] and [3].
[1]: https://github.com/linux-surface/acpidumps/tree/master/surface_book_2
[2]: https://github.com/linux-surface/acpidumps/blob/62972f0d806cef45ca01341e3cfbabc04c6dd583/surface_book_2/dsdt.dsl#L15274-L15285
[3]: https://github.com/linux-surface/acpidumps/blob/62972f0d806cef45ca01341e3cfbabc04c6dd583/surface_book_2/dsdt.dsl#L17947-L17982
`grep -H 15 /sys/bus/acpi/devices/*/status` yields
/sys/bus/acpi/devices/ACPI0003:00/status:15
/sys/bus/acpi/devices/ACPI000C:00/status:15
/sys/bus/acpi/devices/ACPI000E:00/status:15
/sys/bus/acpi/devices/device:16/status:15
/sys/bus/acpi/devices/device:17/status:15
/sys/bus/acpi/devices/device:31/status:15
/sys/bus/acpi/devices/device:71/status:15
/sys/bus/acpi/devices/INT33A1:00/status:15
/sys/bus/acpi/devices/INT33BE:00/status:15
/sys/bus/acpi/devices/INT3400:00/status:15
/sys/bus/acpi/devices/INT3403:01/status:15
/sys/bus/acpi/devices/INT3403:02/status:15
/sys/bus/acpi/devices/INT3403:06/status:15
/sys/bus/acpi/devices/INT3403:07/status:15
/sys/bus/acpi/devices/INT3403:08/status:15
/sys/bus/acpi/devices/INT3403:09/status:15
/sys/bus/acpi/devices/INT3403:11/status:15
/sys/bus/acpi/devices/INT3407:00/status:15
/sys/bus/acpi/devices/INT344B:00/status:15
/sys/bus/acpi/devices/INT3472:00/status:15
/sys/bus/acpi/devices/INT3472:01/status:15
/sys/bus/acpi/devices/INT3472:02/status:15
/sys/bus/acpi/devices/INT347A:00/status:15
/sys/bus/acpi/devices/INT347E:00/status:15
/sys/bus/acpi/devices/INT3F0D:00/status:15
/sys/bus/acpi/devices/LNXPOWER:07/status:15
/sys/bus/acpi/devices/MSHW0005:00/status:15
/sys/bus/acpi/devices/MSHW0029:00/status:15
/sys/bus/acpi/devices/MSHW0036:00/status:15
/sys/bus/acpi/devices/MSHW0040:00/status:15
/sys/bus/acpi/devices/MSHW0042:00/status:15
/sys/bus/acpi/devices/MSHW0045:00/status:15
/sys/bus/acpi/devices/MSHW0084:00/status:15
/sys/bus/acpi/devices/MSHW0091:00/status:15
/sys/bus/acpi/devices/MSHW0107:00/status:15
/sys/bus/acpi/devices/MSHW0133:00/status:15
/sys/bus/acpi/devices/MSHW0153:00/status:15
/sys/bus/acpi/devices/NTC0103:00/status:15
/sys/bus/acpi/devices/PNP0103:00/status:15
/sys/bus/acpi/devices/PNP0C0D:00/status:15
This output is the same for both versions.
>> There is probably a better option than straight up reverting this, so
>> consider this more of a bug-report.
>
> Indeed.
next prev parent reply other threads:[~2021-03-08 16:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 15:25 [PATCH] Revert "pinctrl: intel: Split intel_pinctrl_add_padgroups() for better maintenance" Maximilian Luz
2021-03-08 15:35 ` Andy Shevchenko
2021-03-08 16:31 ` Andy Shevchenko
2021-03-08 16:43 ` Maximilian Luz
2021-03-08 16:46 ` Andy Shevchenko
2021-03-08 16:47 ` Maximilian Luz
2021-03-08 16:32 ` Maximilian Luz [this message]
2021-03-08 16:42 ` Andy Shevchenko
2021-03-08 16:44 ` Maximilian Luz
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