linux-kernel - Re: [PATCH v1 0/2] ALSA: cs35l41: prevent old firmwares using unsupported commands

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Message-ID: <87a5tecm2m.wl-tiwai@suse.de>
Date:   Fri, 22 Sep 2023 16:35:45 +0200
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-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>
Subject: Re: [PATCH v1 0/2] ALSA: cs35l41: prevent old firmwares using unsupported commands

On Fri, 22 Sep 2023 16:28:16 +0200,
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.

So those are fixes needed for 6.6 kernel?  Or they are something new?

> This chain is based on Mark's branch, since the api change was made to
> the function in sound/soc/codecs/cs35l41-lib.c.

I'd need a PR from Mark before applying those, then.


thanks,

Takashi