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author | Nicolin Chen <b42378@freescale.com> | 2013-10-23 03:47:43 (GMT) |
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committer | Takashi Iwai <tiwai@suse.de> | 2013-10-24 07:20:47 (GMT) |
commit | 055032142c42d2821c4aa617915292d6a08d56fc (patch) | |
tree | ce10032a40379b482eda19f8b04f8924a1625195 /sound/pci | |
parent | 861e66d3418a90f57b31a50110fc70b23569c551 (diff) | |
download | linux-055032142c42d2821c4aa617915292d6a08d56fc.tar.xz |
ALSA: Add SoC on-chip internal ram support for DMA buffer allocation
Now it's quite common that an SoC contains its on-chip internal RAM.
By using this RAM space for DMA buffer during audio playback/record,
we can shutdown the voltage for external RAM to save power.
So add new DEV type with iram malloc()/free() and accordingly modify
current default mmap() for the iram circumstance.
Signed-off-by: Nicolin Chen <b42378@freescale.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
0 files changed, 0 insertions, 0 deletions