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| author | Ricardo Neri <ricardo.neri@ti.com> | 2012-04-17 19:46:11 -0500 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-04-18 08:00:36 +0200 |
| commit | 7ba1c40b536e1c0df18d44af67ffa5a87a99f91c (patch) | |
| tree | 402831a5b7b58262a2d8960a5f895b5df62f57ca /include/sound/asound.h | |
| parent | dd775ae2549217d3ae09363e3edb305d0fa19928 (diff) | |
| download | linux-7ba1c40b536e1c0df18d44af67ffa5a87a99f91c.tar.gz linux-7ba1c40b536e1c0df18d44af67ffa5a87a99f91c.tar.xz | |
ALSA: Add definitions for CEA-861 Audio InfoFrames
Along with the IEC-60958 channel status word, CEA-861 Audio InfoFrames
are used in HDMI and DisplayPort to describe the parameters of the audio
stream. Hence, drivers for such devices may use these definitions to, for
instance, fill a CEA-861 data structure and pass it to a display driver
to configure an IP.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/asound.h')
| -rw-r--r-- | include/sound/asound.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/sound/asound.h b/include/sound/asound.h index a2e4ff5ba9e9..0876a1e76aef 100644 --- a/include/sound/asound.h +++ b/include/sound/asound.h @@ -70,6 +70,20 @@ struct snd_aes_iec958 { /**************************************************************************** * * + * CEA-861 Audio InfoFrame. Used in HDMI and DisplayPort * + * * + ****************************************************************************/ + +struct snd_cea_861_aud_if { + unsigned char db1_ct_cc; /* coding type and channel count */ + unsigned char db2_sf_ss; /* sample frequency and size */ + unsigned char db3; /* not used, all zeros */ + unsigned char db4_ca; /* channel allocation code */ + unsigned char db5_dminh_lsv; /* downmix inhibit & level-shit values */ +}; + +/**************************************************************************** + * * * Section for driver hardware dependent interface - /dev/snd/hw? * * * ****************************************************************************/ |