From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Shawn Guo <shawn.guo@linaro.org>, Hans de Goede <hdegoede@redhat.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
linux-gpio@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH] gpiolib: acpi: support override broken GPIO number in ACPI table
Date: Wed, 3 Mar 2021 11:47:45 +0200 [thread overview]
Message-ID: <YD9bQXBD+9k3Lf/4@smile.fi.intel.com> (raw)
In-Reply-To: <20210226033919.8871-1-shawn.guo@linaro.org>
On Fri, Feb 26, 2021 at 11:39:19AM +0800, Shawn Guo wrote:
> Running kernel with ACPI on Lenovo Flex 5G laptop, touchpad is just
> not working. That's because the GpioInt number of TSC2 node in ACPI
> table is simply wrong, and the number even exceeds the maximum GPIO
> lines. As the touchpad works fine with Windows on the same machine,
> presumably this is something Windows-ism. Although it's obviously
> a specification violation, believe of that Microsoft will fix this in
> the near future is not really realistic.
>
> It adds the support of overriding broken GPIO number in ACPI table
> on particular machines, which are matched using DMI info. Such
> mechanism for fixing up broken firmware and ACPI table is not uncommon
> in kernel. And hopefully it can be useful for other machines that get
> broken GPIO number coded in ACPI table.
+Cc: Hans.
Hans, would appreciate your opinion on this thread. Maybe I'm mistaken in my
conclusions.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2021-03-03 21:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 3:39 [PATCH] gpiolib: acpi: support override broken GPIO number in ACPI table Shawn Guo
2021-02-26 9:12 ` Andy Shevchenko
2021-02-26 9:39 ` Shawn Guo
2021-02-26 10:57 ` Andy Shevchenko
2021-02-26 11:19 ` Andy Shevchenko
2021-02-27 3:19 ` Shawn Guo
2021-03-01 12:17 ` Andy Shevchenko
2021-03-02 0:27 ` Shawn Guo
2021-03-02 12:21 ` Andy Shevchenko
2021-03-03 5:02 ` Jeffrey Hugo
2021-03-03 8:06 ` Andy Shevchenko
2021-03-03 8:45 ` Shawn Guo
2021-03-03 9:42 ` Andy Shevchenko
2021-03-03 17:08 ` Jeffrey Hugo
2021-03-03 9:43 ` Shawn Guo
2021-03-03 15:10 ` Jeffrey Hugo
2021-03-03 15:57 ` Bjorn Andersson
2021-03-03 17:32 ` Andy Shevchenko
2021-03-04 6:37 ` Shawn Guo
2021-03-04 6:59 ` Shawn Guo
2021-02-27 3:46 ` Shawn Guo
2021-03-01 12:19 ` Andy Shevchenko
2021-03-02 0:44 ` Shawn Guo
2021-03-02 10:36 ` Andy Shevchenko
2021-03-03 9:47 ` Andy Shevchenko [this message]
2021-03-04 19:32 ` Hans de Goede
2021-03-04 20:16 ` Andy Shevchenko
2021-03-05 1:14 ` Shawn Guo
2021-03-05 9:10 ` Hans de Goede
2021-03-05 10:08 ` Andy Shevchenko
2021-03-05 10:10 ` Andy Shevchenko
2021-03-05 11:26 ` Shawn Guo
2021-03-05 12:12 ` Hans de Goede
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