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ARM: sa1100/pxa: fix MTD_XIP build 

In commit 3169663ac5 "ARM: sa11x0/pxa: convert OS timer registers
to IOMEM", the definition of the OSCR macro was changed to be an
__iomem pointer, but the same register is also used by the XIP
code. This patch does the corresponding change here as well.

On PXA, the IRQ register definitions were removed even earlier, in
commit 5d284e353e ("ARM: pxa: avoid accessing interrupt registers
directly"). This patch unfortunately brings some of that back. An
earlier version of my patch moved the code into an external function,
which could not work for CONFIG_XIP_KERNEL+CONFIG_MTD_XIP, so this
restores something close to the original code.

Link: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-March/241716.html
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2014-03-15 11:21:06 +01:00
parent 8b9740178f
commit d997211e1e
2 changed files with 9 additions and 5 deletions
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10
arch/arm/mach-pxa/include/mach/mtd-xip.h
View File

@ -17,11 +17,15 @@
#include <mach/regs-ost.h>
#define xip_irqpending() (ICIP & ICMR)
/* restored July 2017, this did not build since 2011! */
#define ICIP io_p2v(0x40d00000)
#define ICMR io_p2v(0x40d00004)
#define xip_irqpending() (readl(ICIP) & readl(ICMR))
/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
#define xip_currtime() (OSCR)
#define xip_elapsed_since(x) (signed)((OSCR - (x)) / 4)
#define xip_currtime() readl(OSCR)
#define xip_elapsed_since(x) (signed)((readl(OSCR) - (x)) / 4)
/*
* xip_cpu_idle() is used when waiting for a delay equal or larger than

4
arch/arm/mach-sa1100/include/mach/mtd-xip.h
View File

@ -20,7 +20,7 @@
#define xip_irqpending() (ICIP & ICMR)
/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
#define xip_currtime() (OSCR)
#define xip_elapsed_since(x) (signed)((OSCR - (x)) / 4)
#define xip_currtime() readl_relaxed(OSCR)
#define xip_elapsed_since(x) (signed)((readl_relaxed(OSCR) - (x)) / 4)
#endif /* __ARCH_SA1100_MTD_XIP_H__ */