linux-kernel - Re: [PATCH v3 2/2] ASoC: codecs: add support for TAS5720 digital amplifier

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Date:	Tue, 26 Apr 2016 12:19:05 -0500
From:	"Andrew F. Davis" <afd@...com>
To:	Andreas Dannenberg <dannenberg@...com>,
	<alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>
CC:	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 2/2] ASoC: codecs: add support for TAS5720 digital
 amplifier

On 04/25/2016 03:17 PM, Andreas Dannenberg wrote:
> The Texas Instruments TAS5720L/M device is a high-efficiency mono
> Class-D audio power amplifier optimized for high transient power
> capability to use the dynamic power headroom of small loudspeakers.
> Its digital time division multiplexed (TDM) interface enables up to
> 16 devices to share the same bus.
> 
> Signed-off-by: Andreas Dannenberg <dannenberg@...com>
> ---
>  sound/soc/codecs/Kconfig   |  10 +
>  sound/soc/codecs/Makefile  |   2 +
>  sound/soc/codecs/tas5720.c | 638 +++++++++++++++++++++++++++++++++++++++++++++
>  sound/soc/codecs/tas5720.h |  90 +++++++
>  4 files changed, 740 insertions(+)
>  create mode 100644 sound/soc/codecs/tas5720.c
>  create mode 100644 sound/soc/codecs/tas5720.h
> 
> diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
> index 290f921..3949dae 100644
> --- a/sound/soc/codecs/Kconfig
> +++ b/sound/soc/codecs/Kconfig
> @@ -125,6 +125,7 @@ config SND_SOC_ALL_CODECS
>  	select SND_SOC_TAS2552 if I2C
>  	select SND_SOC_TAS5086 if I2C
>  	select SND_SOC_TAS571X if I2C
> +	select SND_SOC_TAS5720 if I2C
>  	select SND_SOC_TFA9879 if I2C
>  	select SND_SOC_TLV320AIC23_I2C if I2C
>  	select SND_SOC_TLV320AIC23_SPI if SPI_MASTER
> @@ -748,6 +749,15 @@ config SND_SOC_TAS571X
>  	tristate "Texas Instruments TAS5711/TAS5717/TAS5719/TAS5721 power amplifiers"
>  	depends on I2C
>  
> +config SND_SOC_TAS5720
> +	tristate "Texas Instruments TAS5720 Mono Audio amplifier"
> +	depends on I2C
> +	help
> +	  Enable support for Texas Instruments TAS5720L/M high-efficiency mono
> +	  Class-D audio power amplifiers. The devices use an I2C interface for
> +	  setup/control and support an optional GPIO interrupt signal for fault
> +	  reporting.

If fault reporting is no longer interrupt based could this be re-worded?

[...]

> +
> +static struct i2c_driver tas5720_i2c_driver = {
> +	.driver = {
> +		.name = "tas5720",
> +		.owner = THIS_MODULE,

This shouldn't be needed.

Andrew