Re: [PATCH 2/3 v2] ASoC: dwc: Add I2S HDMI audio support

From: Mark Brown
Date: Tue Mar 29 2016 - 13:32:19 EST


On Mon, Mar 28, 2016 at 03:36:10PM +0100, Jose Abreu wrote:
> HDMI audio support was added to the AXS board using an
> I2S cpu driver and a custom platform driver.
>
> The platform driver supports two channels @ 16 bits with
> rates 32k, 44.1k and 48k. ALSA Simple audio card is used to
> glue the cpu, platform and codec driver (adv7511).

> sound/soc/dwc/Kconfig | 1 +
> sound/soc/dwc/designware_i2s.c | 385 +++++++++++++++++++++++++++++++++++++++--

Your changelog appears to describe the writing of a machine driver but
this is a large patch adding code to an I2S controller driver. This
means I can't review your patch since I can't tell what it is supposed
to do. If you've added functionality to this driver you need to send
one or more patches each of which adds a single feature to the driver
together with a changelog which describes what that feature is.

Glancing at the patch I'm not 100% sure that the features you're adding
are part of the Synopsis device but I'm not entirely sure.

> 2 files changed, 373 insertions(+), 13 deletions(-)
>
> diff --git a/sound/soc/dwc/Kconfig b/sound/soc/dwc/Kconfig
> index d50e085..bc3fae7 100644
> --- a/sound/soc/dwc/Kconfig
> +++ b/sound/soc/dwc/Kconfig
> @@ -2,6 +2,7 @@ config SND_DESIGNWARE_I2S
> tristate "Synopsys I2S Device Driver"
> depends on CLKDEV_LOOKUP
> select SND_SOC_GENERIC_DMAENGINE_PCM
> + select SND_SIMPLE_CARD

No, this doesn't make sense - the fact that someone has used a Synopsis
I2S controller doesn't mean that they have a system which uses
simple-card. If the user wants to use simple-card they need to enable
it separately, this is the same pattern we follow for all CPU controller
drivers.

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