[alsa-devel] [RFC 4/4] ASoC: hdac_hdmi: Setup and start infoframe

[Russell King - ARM Linux]

On Fri, Oct 09, 2015 at 01:28:49PM +0100, Vinod Koul wrote:
> From: "Subhransu S. Prusty" <subhransu.s.prusty at intel.com>
> 
> Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty at intel.com>
> Signed-off-by: Vinod Koul <vinod.koul at intel.com>
> ---
>  sound/soc/codecs/hdac_hdmi.c | 133 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 133 insertions(+)
> 
> diff --git a/sound/soc/codecs/hdac_hdmi.c b/sound/soc/codecs/hdac_hdmi.c
> index 309d84122c72..2aca9ce6f423 100644
> --- a/sound/soc/codecs/hdac_hdmi.c
> +++ b/sound/soc/codecs/hdac_hdmi.c
> @@ -63,6 +63,39 @@ struct hdac_hdmi_priv {
>  	struct hdac_hdmi_dai_pin_map dai_map[3];
>  };
>  
> +struct hdmi_audio_infoframe {
> +	u8 type; /* 0x84 */
> +	u8 ver;  /* 0x01 */
> +	u8 len;  /* 0x0a */
> +
> +	u8 checksum;
> +
> +	u8 CC02_CT47;	/* CC in bits 0:2, CT in 4:7 */
> +	u8 SS01_SF24;
> +	u8 CXT04;
> +	u8 CA;
> +	u8 LFEPBL01_LSV36_DM_INH7;
> +};

Any reason not to use the infrastructure in drivers/video/hdmi.c for
generating the HDMI infoframes?  I know this is a fairly simple driver
but I'd guess this is going to become more featureful when you move
to supporting multichannel audio.

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