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

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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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