linux-kernel - Re: [PATCH v3 04/11] platform/x86: asus-wmi: Improve DSTS WMI method ID detection

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Date:   Thu, 9 May 2019 14:08:38 +0800
From:   Daniel Drake <drake@...lessm.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Yurii Pavlovskyi <yurii.pavlovskyi@...il.com>,
        Corentin Chary <corentin.chary@...il.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        acpi4asus-user <acpi4asus-user@...ts.sourceforge.net>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v3 04/11] platform/x86: asus-wmi: Improve DSTS WMI method
 ID detection

> > -#define ASUS_WMI_METHODID_DSTS         0x53544344 /* Device STatuS */
> > -#define ASUS_WMI_METHODID_DSTS2                0x53545344 /* Device STatuS #2*/
>
> > +#define ASUS_WMI_METHODID_DSTS         0x53544344 /* Device STatuS (DCTS) */
>
> It's not clear from the description what 'C' stands for.
> Is there any specification which describes the difference and actual
> abbreviations?

The (recent) spec I have here doesn't mention 0x53544344 (DCTS).
However the spec changelog does mention that EEEPC stuff was removed
from the spec a while ago.
The spec does mention 0x53545344 (DSTS), labelled as "Get device status".

For clarity I think the constants could be renamed as
ASUS_WMI_METHODID_DCTS and ASUS_WMI_METHODID_DSTS.

Daniel