From: Peter Zubaj <pzubaj@marticonet.sk>
Date: Tue, 28 Apr 2015 19:57:29 +0000 (+0200)
Subject: ALSA: emu10k1: Emu10k2 32 bit DMA mode
X-Git-Tag: omap-for-v4.2/omap1-v2~49^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7241ea558c6715501e777396b5fc312c372e11d9;p=pandora-kernel.git

ALSA: emu10k1: Emu10k2 32 bit DMA mode

Looks like audigy emu10k2 (probably emu10k1 - sb live too) support two
modes for DMA. Second mode is useful for 64 bit os with more then 2 GB
of ram (fixes problems with big soundfont loading)

1) 32MB from 2 GB address space using 8192 pages (used now as default)
2) 16MB from 4 GB address space using 4096 pages

Mode is set using HCFG_EXPANDED_MEM flag in HCFG register.
Also format of emu10k2 page table is then different.

Signed-off-by: Peter Zubaj <pzubaj@marticonet.sk>
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

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