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dmaengine/dw_dmac: allow src/dst masters to be configured at runtime

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Some platforms have flexible mastering capabilities and this needs
to be selected at runtime. If the platform has specified private
data in the form of the dw_dma_slave then fetch the source and
destination masters from here. If this isn't present, default to
the previous of 0 and 1.

v2: cleanup whitespace

Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Signed-off-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jamie Iles
2011-01-21 14:11:53 +00:00
committed by Dan Williams
parent 087809fce2
commit f301c062dc
2 changed files with 19 additions and 14 deletions
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2
include/linux/dw_dmac.h
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@@ -52,6 +52,8 @@ struct dw_dma_slave {
enum dw_dma_slave_width reg_width;
u32 cfg_hi;
u32 cfg_lo;
int src_master;
int dst_master;
};
/* Platform-configurable bits in CFG_HI */