linux-kernel - Re: [PATCH v1 0/7] Add support for various laptops using CS35L41 HDA without

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Date: Mon, 18 Dec 2023 18:48:34 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Stefan Binding <sbinding@...nsource.cirrus.com>
Cc: 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 v1 0/7] Add support for various laptops using CS35L41 HDA without _DSD

On Mon, 18 Dec 2023 16:12:14 +0100,
Stefan Binding wrote:
> 
> The CS35L41 HDA driver requires various system defined properties to configure
> the driver for an individual system. For some laptops, these properties are
> missing in the BIOS. To be able to support these laptops, there is a mechanism
> in the driver to get this configuration from a lookup table, to be able to add
> or patch _DSD as necessary.
> 
> However this mechanism currently only allows for laptops to be patched one at
> a time, however, in the case where there are many laptops which need to be
> configured generically, a generic function has been added, with an additional
> lookup table to the individual laptops, indexed by SSID.
> 
> To support laptops using SPI without _DSD, an additional workaround is needed
> to be able to support the SPI Chip Select GPIOs whose resources are defined
> inside the _CRS for the Speaker ACPI Node. This workaround only works for
> SPI laptops which contain up to 2 amps, since the SPI controller would not
> allow more than 2 amps to be instantiated without the cs-gpios entry in
> _DSD.
> 
> These patches add support for various ASUS laptops without _DSD, but the
> framework added here allows for support for more laptops in the future
> for other manufacturers. Support for laptops without _DSD from other
> manufacturers is coming in the future.
> 
> Note: for systems which use modified _DSD to emulate the missing _DSD,
> these patches are incompatible, and the modified _DSD must be removed in
> order for the support through this framework to work for those laptops.
> 
> Stefan Binding (7):
>   ALSA: hda: cs35l41: Add config table to support many laptops without
>     _DSD
>   ALSA: hda: cs35l41: Support additional ASUS ROG 2023 models
>   ALSA: hda/realtek: Add quirks for ASUS ROG 2023 models
>   ALSA: hda: cs35l41: Support additional ASUS Zenbook 2022 Models
>   ALSA: hda/realtek: Add quirks for ASUS Zenbook 2022 Models
>   ALSA: hda: cs35l41: Support additional ASUS Zenbook 2023 Models
>   ALSA: hda/realtek: Add quirks for ASUS Zenbook 2023 Models

Applied all seven patches now.  Thanks.


Takashi