linux-kernel - Re: [v2 01/17] ASoC: mediatek: mt6366: add codec driver

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Date:   Mon, 7 Mar 2022 10:07:45 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Jiaxin Yu <jiaxin.yu@...iatek.com>, broonie@...nel.org
Cc:     lgirdwood@...il.com, tiwai@...e.com, robh+dt@...nel.org,
        matthias.bgg@...il.com, perex@...ex.cz, p.zabel@...gutronix.de,
        geert+renesas@...der.be, trevor.wu@...iatek.com,
        tzungbi@...gle.com, aaronyu@...gle.com, zhangqilong3@...wei.com,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [v2 01/17] ASoC: mediatek: mt6366: add codec driver

Il 05/03/22 05:24, Jiaxin Yu ha scritto:
> On Fri, 2022-02-18 at 15:54 +0100, AngeloGioacchino Del Regno wrote:
>> Il 17/02/22 14:41, Jiaxin Yu ha scritto:
>>> Mt6366 is a new version of mt6358, and they are same about audio
>>> part.
>>> So we can reuse the driver of mt6358.
>>>
>>> Signed-off-by: Jiaxin Yu <jiaxin.yu@...iatek.com>
>>
>> Hello Jiaxin,
>> I'm sorry but this commit makes very little sense.
>>
>> If you want to advertise MT6366 support, please write a note and/or
>> a new compatible string inside of the mt6358 driver (and dt-
>> bindings),
>> then, please drop this commit.
>>
> 
> Hello angelogioacchino,
> 
> Thank you for your advice.
> 
> If I add a new compatible string inside of the mt6358 driver and dt-
> bindings, then the machine driver which want to use mt6366 should
> select SND_SOC_MT6358.
> 
> like below:
> 
> config SND_SOC_MT8186_MT6366_DA7219_MAX98357
> 	tristate "ASoC Audio driver for MT8186 with DA7219 MAX98357A
> codec"
>   	depends on I2C && GPIOLIB
>   	depends on SND_SOC_MT8186 && MTK_PMIC_WRAP
>   	select SND_SOC_MT6366   ==> SND_SOC_MT6358
> 	...
> 
> I just doubt it's enough to make sense. I originally wanted to put this
> relationship in the sound/soc/codecs layer. So that this relationship
> is not perceived by users(machine driver).
> However, if the general practice is like this, I will adopt your
> suggestion. Thank you again.
> 

Yes this is acceptable, please do it like that.

Thanks,
Angelo

>>
>>> ---
>>>    sound/soc/codecs/Kconfig  | 8 ++++++++
>>>    sound/soc/codecs/Makefile | 1 +
>>>    2 files changed, 9 insertions(+)
>>>
>>> diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
>>> index 8fa24783ce01..6631094678f5 100644
>>> --- a/sound/soc/codecs/Kconfig
>>> +++ b/sound/soc/codecs/Kconfig
>>> @@ -132,6 +132,7 @@ config SND_SOC_ALL_CODECS
>>>    	imply SND_SOC_MT6351
>>>    	imply SND_SOC_MT6358
>>>    	imply SND_SOC_MT6359
>>> +	imply SND_SOC_MT6366
>>>    	imply SND_SOC_MT6660
>>>    	imply SND_SOC_NAU8315
>>>    	imply SND_SOC_NAU8540
>>> @@ -1888,6 +1889,13 @@ config SND_SOC_MT6359_ACCDET
>>>    	  for ASoC codec soc-jack detection mechanism.
>>>    	  Select N if you don't have jack on board.
>>>    
>>> +config SND_SOC_MT6366
>>> +	tristate "MediaTek MT6366 Codec"
>>> +	depends on MTK_PMIC_WRAP
>>> +	help
>>> +	  Enable support for the platform which uses MT6366 as
>>> +	  external codec device.
>>> +
>>>    config SND_SOC_MT6660
>>>    	tristate "Mediatek MT6660 Speaker Amplifier"
>>>    	depends on I2C
>>> diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
>>> index 42d00aa4ee46..1279684feaf0 100644
>>> --- a/sound/soc/codecs/Makefile
>>> +++ b/sound/soc/codecs/Makefile
>>> @@ -465,6 +465,7 @@ obj-$(CONFIG_SND_SOC_MT6351)	+= snd-soc-
>>> mt6351.o
>>>    obj-$(CONFIG_SND_SOC_MT6358)	+= snd-soc-mt6358.o
>>>    obj-$(CONFIG_SND_SOC_MT6359)	+= snd-soc-mt6359.o
>>>    obj-$(CONFIG_SND_SOC_MT6359_ACCDET) += mt6359-accdet.o
>>> +obj-$(CONFIG_SND_SOC_MT6366)	+= snd-soc-mt6358.o
>>>    obj-$(CONFIG_SND_SOC_MT6660)	+= snd-soc-mt6660.o
>>>    obj-$(CONFIG_SND_SOC_NAU8315)   += snd-soc-nau8315.o
>>>    obj-$(CONFIG_SND_SOC_NAU8540)   += snd-soc-nau8540.o
>>
>>
>