linux-kernel - Re: [PATCH v2 0/2] ALSA: cs35l41: prevent old firmwares using unsupported commands

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Date:   Mon, 20 Nov 2023 12:37:33 +0100
From:   Takashi Iwai <tiwai@...e.de>
To:     Stefan Binding <sbinding@...nsource.cirrus.com>
Cc:     Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
        "Takashi Iwai" <tiwai@...e.com>, <alsa-devel@...a-project.org>,
        <linux-sound@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <patches@...nsource.cirrus.com>
Subject: Re: [PATCH v2 0/2] ALSA: cs35l41: prevent old firmwares using unsupported commands

On Fri, 17 Nov 2023 17:36:07 +0100,
Stefan Binding wrote:
> 
> Some systems use older firmware which does not support newer commands
> which are used to enable external boost. For those systems, we can
> workaround this by writing the registers directly.
> 
> We can use the firmware version, stored inside cs_dsp, to determine
> whether or not the command is supported.
> To achieve this, it requires a cleanup in the api, to pass the cs_dsp
> struct into the function.
> 
> We can also remove the redundant boolean firmware_running from the HDA
> driver, and use the equivalent state inside cs_dsp.
> 
> Changes since V1:
> - Added fixes tag to all patches
> - patches rebased after v6.7 release
> 
> Stefan Binding (2):
>   ALSA: hda: cs35l41: Remove unnecessary boolean state variable
>     firmware_running
>   ALSA: cs35l41: Fix for old systems which do not support command

Both patches applied now.  Thanks.


Takashi