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

[Jose Abreu]

Hi Mark,

On 29-03-2016 18:31, Mark Brown wrote:
> 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.
>

The major part of this patch is the adding of an ALSA platform driver so that
audio comes out of the box in AXS boards but we also added functionalities to
the i2s driver and performed one bug fix related with the mask/unmask of
interrupts. I will split the patches but they will depend on each other.

>>  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.
>

I will remove this.

>
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Best regards,
Jose Miguel Abreu
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