linux-kernel - Re: [EXTERNAL] Re: [PATCH v2 2/3] ALSA: hda/tas2781: Main code of tas2781 driver for SPI

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Date: Thu, 18 Apr 2024 05:12:03 +0000
From: "Xu, Baojun" <baojun.xu@...com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC: "tiwai@...e.de" <tiwai@...e.de>,
        "robh+dt@...nel.org"
	<robh+dt@...nel.org>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "pierre-louis.bossart@...ux.intel.com"
	<pierre-louis.bossart@...ux.intel.com>,
        "Lu, Kevin" <kevin-lu@...com>,
        "Ding,
 Shenghao" <shenghao-ding@...com>,
        "Navada Kanyana, Mukund" <navada@...com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "liam.r.girdwood@...el.com" <liam.r.girdwood@...el.com>,
        "yung-chuan.liao@...ux.intel.com" <yung-chuan.liao@...ux.intel.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "soyer@....hu" <soyer@....hu>
Subject: Re: [EXTERNAL] Re: [PATCH v2 2/3] ALSA: hda/tas2781: Main code of
 tas2781 driver for SPI

Hi Andy,

Thanks for your valuable suggestions.

> From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Sent: 09 April 2024 21:21
> To: Xu, Baojun
> Cc: tiwai@...e.de; robh+dt@...nel.org; lgirdwood@...il.com; perex@...ex.cz; pierre-louis.bossart@...ux.intel.com; Lu, Kevin; Ding, Shenghao; Navada Kanyana, Mukund; 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: [EXTERNAL] Re: [PATCH v2 2/3] ALSA: hda/tas2781: Main code of tas2781 driver for SPI
> 
> On Tue, Apr 09, 2024 at 10: 48: 14AM +0800, Baojun Xu wrote: > Main source code for tas2781 driver for SPI. .. . > +#ifndef __TAS2781_SPI_H__ > +#define __TAS2781_SPI_H__ + bits. h + mutex. h + time. h? (for struct tm) + types. h struct calidata
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> On Tue, Apr 09, 2024 at 10:48:14AM +0800, Baojun Xu wrote:
> > Main source code for tas2781 driver for SPI.
> 
> ...
> 
> > +#ifndef __TAS2781_SPI_H__
> > +#define __TAS2781_SPI_H__
> 
> + bits.h
> + mutex.h
> + time.h? (for struct tm)
> + types.h
> 
> struct calidata is from?..
> 
> > +#include <sound/tas2781-dsp.h>
> 
> Not sure how this is being used.

Was used for firmware binary file parser, all of file format information
was defined in this header file. It can be shared between SPI & I2C. 
> 
> Also some forward declarations:
> 
> + struct device;
> + struct firmware;
> + struct gpio_desc;
> + struct regmap;
> 
> ...
> 
> > +#define TAS2781_SPI_MAX_FREQ         4000000
> 
> 4 * HZZ_PER_MHZ ?
> 
Not found it, will use HZ_PER_MHZ in next patch.
> ...
> 
> --
> With Best Regards,
> Andy Shevchenko
> 
> 
> 
>