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net: smc91x: isolate u16 writes alignment workaround

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Writes to u16 has a special handling on 3 PXA platforms, where the
hardware wiring forces these writes to be u32 aligned.

This patch isolates this handling for PXA platforms as before, but
enables this "workaround" to be set up dynamically, which will be the
case in device-tree build types.

This patch was tested on 2 PXA platforms : mainstone, which relies on
the workaround, and lubbock, which doesn't.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Jarzmik
2016-10-17 21:45:30 +02:00
committed by David S. Miller
parent 9a97434215
commit d09d747ae4
3 changed files with 47 additions and 40 deletions
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2
arch/mn10300/unit-asb2303/include/unit/smc91111.h
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@@ -30,7 +30,7 @@
#if SMC_CAN_USE_16BIT
#define SMC_inw(a, r) inw((unsigned long) ((a) + (r)))
#define SMC_outw(v, a, r) outw(v, (unsigned long) ((a) + (r)))
#define SMC_outw(lp, v, a, r) outw(v, (unsigned long) ((a) + (r)))
#define SMC_insw(a, r, p, l) insw((unsigned long) ((a) + (r)), (p), (l))
#define SMC_outsw(a, r, p, l) outsw((unsigned long) ((a) + (r)), (p), (l))
#endif