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| author | Liam Girdwood <lrg@ti.com> | 2011-01-27 19:35:01 +0000 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2011-06-14 09:06:12 -0700 |
| commit | 055cb29d144685566efff9c12d864dd3bfe91963 (patch) | |
| tree | 05cd0b8b8c1ff5b04c4cb0a14de1d464b8616e6c /drivers/block | |
| parent | 70d9308c044b4ba3af896aa20105f3ac4f5f2f1a (diff) | |
| download | kernel_samsung_tuna-055cb29d144685566efff9c12d864dd3bfe91963.zip kernel_samsung_tuna-055cb29d144685566efff9c12d864dd3bfe91963.tar.gz kernel_samsung_tuna-055cb29d144685566efff9c12d864dd3bfe91963.tar.bz2 | |
ASoC: core - pcm mutex per rtd
In preparation for ASoC DSP support.
The new DSP core allows DSP DAIs to be dynamically re-routed at runtime
between the PCM device end (or Frontend - FE) and the physical DAI
(Backend - BE) using regular kcontrols (just like a hardware CODEC).
The DSP core therefore must be able to call PCM operations for both the
Frontend and Backend(s) DAIs at the same time.
Currently we have a global pcm_mutex that is used to serialise
the ASoC PCM operations. This patch removes the global mutex
and adds a mutex per RTD allowing the PCM operations to be reentrant and
allow control of more than one DAI at at time. e.g. a frontend DSP hw_params()
could configure multiple backend hw_params() with similar or different
hw parameters at the same time.
Also fix the naming of soc_pcm_close.
Signed-off-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'drivers/block')
0 files changed, 0 insertions, 0 deletions