From: Rob Herring <rob.herring@calxeda.com>
Date: Tue, 21 Aug 2012 10:20:17 +0000 (+0200)
Subject: ARM: add coherent dma ops
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~37^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd37e9405a8e85be49a60b2530efeb5f06bcb753;p=pandora-kernel.git

ARM: add coherent dma ops

arch_is_coherent is problematic as it is a global symbol. This
doesn't work for multi-platform kernels or platforms which can support
per device coherent DMA.

This adds arm_coherent_dma_ops to be used for devices which connected
coherently (i.e. to the ACP port on Cortex-A9 or A15). The arm_dma_ops
are modified at boot when arch_is_coherent is true.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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