Date:   Thu, 02 Dec 2021 16:39:13 +0100
Message-ID: <s5hlf13t3ry.wl-tiwai@suse.de>
From:   Takashi Iwai <tiwai@suse.de>
To:     Werner Sembach <wse@tuxedocomputers.com>
Cc:     perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ALSA: hda/realtek: Fix quirk for TongFang PHxTxX1
In-Reply-To: <e49f141f-3d00-7e11-908e-4227feb9cf5b@tuxedocomputers.com>
References: <20211202152843.818617-1-wse@tuxedocomputers.com>
        <e49f141f-3d00-7e11-908e-4227feb9cf5b@tuxedocomputers.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka)
 FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3
 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO)
MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka")
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk

On Thu, 02 Dec 2021 16:35:23 +0100,
Werner Sembach wrote:
> 
> Am 02.12.21 um 16:28 schrieb Werner Sembach:
> > This fixes the SND_PCI_QUIRK(...) of the TongFang PHxTxX1 barebone. This
> > fixes the issue of sound not working after s3 suspend.
> >
> > When waking up from s3 suspend the Coef 0x10 is set to 0x0220 instead of
> > 0x0020. Setting the value manually makes the sound work again. This patch
> > does this automatically.
> An educational question: Is there any, at least partial, documentation available on what these Coef values actually do
> besides https://www.kernel.org/doc/html/v5.15/sound/hd-audio/realtek-pc-beep.html ?

Unfortunately, no.  It's a completely vendor-specific black magic.


Takashi