linux-kernel - Re: [PATCH v2 1/3] ALSA: hda/tas2781: Modification for add tas2781 driver for SPI

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Date: Tue, 9 Apr 2024 16:02:52 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Baojun Xu <baojun.xu@...com>
Cc: tiwai@...e.de, robh+dt@...nel.org, lgirdwood@...il.com, perex@...ex.cz,
	pierre-louis.bossart@...ux.intel.com, kevin-lu@...com,
	shenghao-ding@...com, navada@...com, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, liam.r.girdwood@...el.com,
	yung-chuan.liao@...ux.intel.com, broonie@...nel.org, soyer@....hu
Subject: Re: [PATCH v2 1/3] ALSA: hda/tas2781: Modification for add tas2781
 driver for SPI

On Tue, Apr 09, 2024 at 10:48:13AM +0800, Baojun Xu wrote:
> Integrate tas2781 configs for HP Laptops. Every tas2781 in the laptop
> will work as a single speaker on SPI bus. The code support realtek as

Realtek

> the primary codec.

..

>  		{"INT33FE", },
>  		{"INT3515", },
>  		/* Non-conforming _HID for Cirrus Logic already released */
> +		{"TXNW2781", },

This seems wrong. The ID here is correct from ACPI specification perspective.
Can you elaborate why you think it's "non-conforming _HID"?

>  		{"CLSA0100", },
>  		{"CLSA0101", },

..

>  	/* Non-conforming _HID for Cirrus Logic already released */
>  	{ "CLSA0100", (unsigned long)&cs35l41_hda },
>  	{ "CLSA0101", (unsigned long)&cs35l41_hda },
> +	{ "TXNW2781", (unsigned long)&tas2781_hda },

Ditto.

>  	{ }

..

> @@ -39,6 +39,7 @@ snd-hda-scodec-cs35l56-spi-objs :=	cs35l56_hda_spi.o
>  snd-hda-cs-dsp-ctls-objs :=		hda_cs_dsp_ctl.o
>  snd-hda-scodec-component-objs :=	hda_component.o
>  snd-hda-scodec-tas2781-i2c-objs :=	tas2781_hda_i2c.o
> +snd-hda-scodec-tas2781-spi-objs :=	tas2781_hda_spi.o tas2781_spi_fwlib.o

Actually these 'objs' has to be 'y', can you fix it in the prerequisite patch?

Also wondering why fwlib is only a requirement for SPI. How does I²C work?

-- 
With Best Regards,
Andy Shevchenko