On Tue, 2011-08-30 at 17:28 +0530, Pratyush Anand wrote: > There are some peripheral(e.g dwc otg) whose registers can be configured to > work in either little or big endian mode. Therefor macros like out_be32, > in_be32, out_le32 and in_le32 have been added to support such peripherals. Yuck. Don't copy those ppc specific historical accessors :-) Doesn't arm have writel_be ? If not , define those, it's a bit more common, or better, switch to the newer iomap variants which should be provided in both endianness. Cheers, Ben. > Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx> > --- > arch/arm/include/asm/io.h | 8 ++++++++ > 1 files changed, 8 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h > index 815efa2..32282b4 100644 > --- a/arch/arm/include/asm/io.h > +++ b/arch/arm/include/asm/io.h > @@ -297,6 +297,14 @@ extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size); > extern int devmem_is_allowed(unsigned long pfn); > #endif > > +/* Big Endian */ > +#define out_be32(a, v) writel(__cpu_to_be32(v), a) > +#define in_be32(a) __be32_to_cpu(readl(a)) > + > +/* Little endian */ > +#define out_le32(a, v) writel(__cpu_to_le32(v), a) > +#define in_le32(a) __le32_to_cpu(readl(a)) > + > /* > * Convert a physical pointer to a virtual kernel pointer for /dev/mem > * access -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
