diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2016-03-10 08:29:21 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-03-12 09:03:41 +0300 |
| commit | f1511a14a4a94d063cf8f8f12f36cf2ebb0cc8a8 (patch) | |
| tree | 73432e39c7f2e6405146db83aff64ed267ba9b36 /sound | |
| parent | 09e59075496517206351cc28226ad7263a1a5c4f (diff) | |
| download | linux-f1511a14a4a94d063cf8f8f12f36cf2ebb0cc8a8.tar.xz | |
ASoC: rsnd: add simplified module explanation
Renesas sound driver user needs to read its datasheet when create DT.
But it is difficult to understand, because it has many modules
(SRC/CTU/MIX/DVC/SSIU/SSI/AudioDMAC/AudioDMACperiperi),
and many features (Asynchronous/Synchronous mode on SRC, CTU matrix,
DVC volume settings feature, Multi-SSI/TDM-SSI, etc).
This patch adds simplified explanation to help setting/understanding.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sh/rcar/dvc.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c index 93b11e1c5d7f..02d971f69eff 100644 --- a/sound/soc/sh/rcar/dvc.c +++ b/sound/soc/sh/rcar/dvc.c @@ -8,6 +8,29 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ + +/* + * Playback Volume + * amixer set "DVC Out" 100% + * + * Capture Volume + * amixer set "DVC In" 100% + * + * Playback Mute + * amixer set "DVC Out Mute" on + * + * Capture Mute + * amixer set "DVC In Mute" on + * + * Volume Ramp + * amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps" + * amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps" + * amixer set "DVC Out Ramp" on + * aplay xxx.wav & + * amixer set "DVC Out" 80% // Volume Down + * amixer set "DVC Out" 100% // Volume Up + */ + #include "rsnd.h" #define RSND_DVC_NAME_SIZE 16 |