From: Nicolin Chen <b42378@freescale.com>
Date: Wed, 23 Oct 2013 03:47:43 +0000 (+0800)
Subject: ALSA: Add SoC on-chip internal ram support for DMA buffer allocation
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~14^2~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=055032142c42d2821c4aa617915292d6a08d56fc;p=pandora-kernel.git

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>
---

Reading git-diff-tree failed