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| author | Lars-Peter Clausen <lars@metafoo.de> | 2014-12-29 18:43:37 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-12-30 16:27:47 +0100 |
| commit | 8ef9df55a72425e269575fa74cbbedec4672bdc4 (patch) | |
| tree | 26b586cdb86993462827f6558d2187e52c9669ed /sound/soc | |
| parent | ALSA: Fix handling of multiple msbits constraints on the same runtime (diff) | |
| download | linux-8ef9df55a72425e269575fa74cbbedec4672bdc4.tar.xz linux-8ef9df55a72425e269575fa74cbbedec4672bdc4.zip | |
ALSA: Add support for wildcard msbits constraints
Currently the msbits constraints requires to specify a specific sample
format width for which the constraint should be applied. But often the
number of most significant bits is not sample format specific, but rather a
absolute limit. E.g. the PCM interface might accept 32-bit and 24-bit
samples, but the DAC has a 16-bit resolution and throws away the LSBs. In
this case for both 32-bit and 24-bit format msbits should be set to 16. This
patch extends snd_pcm_hw_constraint_msbits() so that a wildcard constraint
can be setup that is applied for all formats with a sample width larger than
the specified msbits. Choosing the wildcard constraint is done by setting
the sample width parameter of the function to 0.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions