path: root/Documentation/sound
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authorLiam Girdwood <liam.r.girdwood@linux.intel.com>2013-09-20 18:19:06 +0100
committerMark Brown <broonie@linaro.org>2013-09-23 12:06:24 +0100
commit3eb012834b28585a37fe0684182828efc1ab0512 (patch)
tree656c11a90a278ba3b125d36415e2b40b8451fa00 /Documentation/sound
parentda5feefeda496f003a2e909762e72843cb9837a6 (diff)
ASoC: Docs: Platform update
Update the platform class driver documentation and bring it up to date with the current code base. This includes multi component and DSP. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation/sound')
1 files changed, 16 insertions, 3 deletions
diff --git a/Documentation/sound/alsa/soc/platform.txt b/Documentation/sound/alsa/soc/platform.txt
index d57efad37e0a..3a08a2c9150c 100644
--- a/Documentation/sound/alsa/soc/platform.txt
+++ b/Documentation/sound/alsa/soc/platform.txt
@@ -1,9 +1,9 @@
ASoC Platform Driver
-An ASoC platform driver can be divided into audio DMA and SoC DAI configuration
-and control. The platform drivers only target the SoC CPU and must have no board
-specific code.
+An ASoC platform driver class can be divided into audio DMA drivers, SoC DAI
+drivers and DSP drivers. The platform drivers only target the SoC CPU and must
+have no board specific code.
Audio DMA
@@ -64,3 +64,16 @@ Each SoC DAI driver must provide the following features:-
5) Suspend and resume (optional)
Please see codec.txt for a description of items 1 - 4.
+SoC DSP Drivers
+Each SoC DSP driver usually supplies the following features :-
+ 1) DAPM graph
+ 2) Mixer controls
+ 3) DMA IO to/from DSP buffers (if applicable)
+ 4) Definition of DSP front end (FE) PCM devices.
+Please see DPCM.txt for a description of item 4.

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