[alsa-devel] [PATCH 05/19] OMAPDSS: Kconfig: Add depencies and help section to OMAP4_DSS_HDMI_AUDIO

[Jyri Sarha]

On 05/16/2014 01:52 PM, Tomi Valkeinen wrote:
> Hi,
>
> On 12/05/14 12:12, Jyri Sarha wrote:
>> Signed-off-by: Jyri Sarha <jsarha at ti.com>
>> ---
>>   drivers/video/fbdev/omap2/dss/Kconfig |   10 +++++++++-
>>   1 file changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/video/fbdev/omap2/dss/Kconfig b/drivers/video/fbdev/omap2/dss/Kconfig
>> index 8921a7a..ecc2f50 100644
>> --- a/drivers/video/fbdev/omap2/dss/Kconfig
>> +++ b/drivers/video/fbdev/omap2/dss/Kconfig
>> @@ -70,7 +70,15 @@ config OMAP4_DSS_HDMI
>>   	  HDMI support for OMAP4 based SoCs.
>>
>>   config OMAP4_DSS_HDMI_AUDIO
>> -	bool
>> +	bool "HDMI audio support for OMAP4"
>> +	depends on OMAP4_DSS_HDMI
>> +	depends on SND_OMAP_SOC=y || OMAP2_DSS = SND_OMAP_SOC
>> +	default y
>> +	help
>> +	  HDMI audio support for OMAP4 based SoCs. Adds integrated
>> +	  ASoC Digital Audio Interface component driver into OMAPDSS
>> +	  module. Select SND_SOC_HDMI_CODEC and SND_SIMPLE_CARD with
>> +	  devicetree description for full HDMI audio support.
>
> What does "for full HDMI audio support" mean? What's the partial support? =)
>

The hdmi driver provides a digital audio interface (DAI) which can be 
used to transmit audio over the HDMI cable. The ASoC DAI component 
driver provides just that functionality. A machine, platform, and (in 
this case a dummy) codec component driver is also needed for a complete 
ALSA device functionality.

Anyway, I look into Mark's suggestion of instantiating all the necessary 
component drivers from the HDMI driver.

Best regards,
Jyri