From d21275ef5e7fe67c592896d6dbb157e219ec0450 Mon Sep 17 00:00:00 2001 From: Thomas Chou Date: Wed, 30 Sep 2015 20:56:53 +0800 Subject: nios2: add clear and set bits macros These macros can be used to clear and set multiple bits in a register using a single call. Signed-off-by: Thomas Chou Reviewed-by: Marek Vasut Acked-by: Chin Liang See --- arch/nios2/include/asm/io.h | 55 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) (limited to 'arch/nios2/include') diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h index b4bd20f475..2200dab5b3 100644 --- a/arch/nios2/include/asm/io.h +++ b/arch/nios2/include/asm/io.h @@ -116,4 +116,59 @@ static inline void outsl (unsigned long port, const void *src, unsigned long cou while (count--) outl (*p++, port); } +/* + * Clear and set bits in one shot. These macros can be used to clear and + * set multiple bits in a register using a single call. These macros can + * also be used to set a multiple-bit bit pattern using a mask, by + * specifying the mask in the 'clear' parameter and the new bit pattern + * in the 'set' parameter. + */ + +#define out_arch(type,endian,a,v) __raw_write##type(cpu_to_##endian(v),a) +#define in_arch(type,endian,a) endian##_to_cpu(__raw_read##type(a)) + +#define out_le32(a,v) out_arch(l,le32,a,v) +#define out_le16(a,v) out_arch(w,le16,a,v) + +#define in_le32(a) in_arch(l,le32,a) +#define in_le16(a) in_arch(w,le16,a) + +#define out_be32(a,v) out_arch(l,be32,a,v) +#define out_be16(a,v) out_arch(w,be16,a,v) + +#define in_be32(a) in_arch(l,be32,a) +#define in_be16(a) in_arch(w,be16,a) + +#define out_8(a,v) __raw_writeb(v,a) +#define in_8(a) __raw_readb(a) + +#define clrbits(type, addr, clear) \ + out_##type((addr), in_##type(addr) & ~(clear)) + +#define setbits(type, addr, set) \ + out_##type((addr), in_##type(addr) | (set)) + +#define clrsetbits(type, addr, clear, set) \ + out_##type((addr), (in_##type(addr) & ~(clear)) | (set)) + +#define clrbits_be32(addr, clear) clrbits(be32, addr, clear) +#define setbits_be32(addr, set) setbits(be32, addr, set) +#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set) + +#define clrbits_le32(addr, clear) clrbits(le32, addr, clear) +#define setbits_le32(addr, set) setbits(le32, addr, set) +#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set) + +#define clrbits_be16(addr, clear) clrbits(be16, addr, clear) +#define setbits_be16(addr, set) setbits(be16, addr, set) +#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set) + +#define clrbits_le16(addr, clear) clrbits(le16, addr, clear) +#define setbits_le16(addr, set) setbits(le16, addr, set) +#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set) + +#define clrbits_8(addr, clear) clrbits(8, addr, clear) +#define setbits_8(addr, set) setbits(8, addr, set) +#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) + #endif /* __ASM_NIOS2_IO_H_ */ -- cgit v1.2.1