linux-kernel - Re: [PATCH v2] ALSA: hda: cs35l56: Perform firmware download in the background

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Date: Tue, 18 Jun 2024 16:27:24 +0200
From: Takashi Iwai <tiwai@...e.de>
To: Simon Trimmer <simont@...nsource.cirrus.com>
Cc: <tiwai@...e.com>,
	<linux-sound@...r.kernel.org>,
	<alsa-devel@...a-project.org>,
	<linux-kernel@...r.kernel.org>,
	<patches@...nsource.cirrus.com>
Subject: Re: [PATCH v2] ALSA: hda: cs35l56: Perform firmware download in the background

On Tue, 18 Jun 2024 15:00:11 +0200,
Simon Trimmer wrote:
> 
> It is possible that during system boot when there multiple devices
> attempting simultaneous initialization on a slow control bus the
> download of firmware and tuning data may take a user perceivable amount
> of time (a slow I2C bus with 4 amps this work could take over 2
> seconds).
> 
> Adopt a pattern used in the ASoC driver and perform this activity in a
> background thread so that interactive performance is not impaired. The
> system_long_wq is a parallel workqueue and driver instances will perform
> their firmware downloads in parallel to make best use of available bus
> bandwidth.
> 
> Signed-off-by: Simon Trimmer <simont@...nsource.cirrus.com>

Thanks, applied now to for-next branch.


Takashi