diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/include/asm/io.h | 43 |
1 files changed, 40 insertions, 3 deletions
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h index ca598a60f38..0a00db36179 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -147,13 +147,13 @@ extern void __iounmap(void *addr); */ #ifdef iomem_valid_addr #define __arch_ioremap(off, sz, nocache) \ - ({ \ +({ \ unsigned long _off = (off), _size = (sz); \ void *_ret = (void *)0; \ if (iomem_valid_addr(_off, _size)) \ _ret = __ioremap(iomem_to_phys(_off), _size, 0); \ _ret; \ - }) +}) #define __arch_iounmap __iounmap #endif @@ -238,6 +238,43 @@ static inline void sync(void) } /* + * 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 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) + +/* * Given a physical address and a length, return a virtual address * that can be used to access the memory range with the caching * properties specified by "flags". @@ -261,7 +298,7 @@ static inline void unmap_physmem(void *vaddr, unsigned long flags) } -static inline phys_addr_t virt_to_phys(void * vaddr) +static inline phys_addr_t virt_to_phys(void *vaddr) { return (phys_addr_t)(vaddr); } |