linux-kernel - Re: [net-next: PATCH v3 1/1] ACPI: SPCR: Add new 16550-compatible Serial Port Subtype

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Date:   Wed, 14 Jul 2021 21:18:59 +0200
From:   Marcin Wojtas <mw@...ihalf.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        "open list:ACPI COMPONENT ARCHITECTURE (ACPICA)" <devel@...ica.org>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>,
        Grzegorz Bernacki <gjb@...ihalf.com>, upstream@...ihalf.com,
        Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@....com>,
        Jon <jon@...id-run.com>, Tomasz Nowicki <tn@...ihalf.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Erik Kaneda <erik.kaneda@...el.com>,
        Robert Moore <robert.moore@...el.com>
Subject: Re: [net-next: PATCH v3 1/1] ACPI: SPCR: Add new 16550-compatible
 Serial Port Subtype

Hi Rafael,


śr., 14 lip 2021 o 14:27 Rafael J. Wysocki <rafael@...nel.org> napisał(a):
>
> Sorry for the delay.
>
> On Mon, Jun 21, 2021 at 10:05 PM Marcin Wojtas <mw@...ihalf.com> wrote:
> >
> > The Microsoft Debug Port Table 2 (DBG2) specification revision
> > May 31, 2017 adds support for 16550-compatible Serial Port
> > Subtype with parameters defined in Generic Address Structure (GAS) [1]
> >
> > Add its support in SPCR parsing routine.
> >
> > [1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table
> >
> > Signed-off-by: Marcin Wojtas <mw@...ihalf.com>
> > ---
> >  include/acpi/actbl1.h | 1 +
> >  drivers/acpi/spcr.c   | 1 +
> >  2 files changed, 2 insertions(+)
> >
> > diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
> > index ce59903c2695..f746012eba8d 100644
> > --- a/include/acpi/actbl1.h
> > +++ b/include/acpi/actbl1.h
>
> This is an ACPICA header, so the first part of the patch should go in
> via the ACPICA upstream repository.
>
> Can you please resend this as two patches to make it easier to process it?
>

I created a pull request to the ACPICA upstream with adding all the
missing DBG2 subtypes:
https://github.com/acpica/acpica/pull/705

Once that is accepted and lands, I will import the header update to
Linux along with the driver modification.

Best regards,
Marcin