Those functions are used by the regmap core. Without them regmaps are not working on sandbox. The implementation is taken from arch/x86/include/asm/io.h.
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
arch/sandbox/include/asm/io.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h index 2a350a826c..504aac0691 100644 --- a/arch/sandbox/include/asm/io.h +++ b/arch/sandbox/include/asm/io.h @@ -38,18 +38,18 @@ static inline void unmap_sysmem(const void *vaddr) /* Map from a pointer to our RAM buffer */ phys_addr_t map_to_sysmem(const void *ptr);
-/* Define nops for sandbox I/O access */ -#define readb(addr) ((void)addr, 0) -#define readw(addr) ((void)addr, 0) -#define readl(addr) ((void)addr, 0) +#define readb(addr) (*(volatile u8 *)(uintptr_t)(addr)) +#define readw(addr) (*(volatile u16 *)(uintptr_t)(addr)) +#define readl(addr) (*(volatile u32 *)(uintptr_t)(addr)) #ifdef CONFIG_SANDBOX64 -#define readq(addr) ((void)addr, 0) +#define readq(addr) (*(volatile u64 *)(uintptr_t)(addr)) #endif -#define writeb(v, addr) ((void)addr) -#define writew(v, addr) ((void)addr) -#define writel(v, addr) ((void)addr) + +#define writeb(b, addr) (*(volatile u8 *)(addr) = (b)) +#define writew(b, addr) (*(volatile u16 *)(addr) = (b)) +#define writel(b, addr) (*(volatile u32 *)(addr) = (b)) #ifdef CONFIG_SANDBOX64 -#define writeq(v, addr) ((void)addr) +#define writeq(b, addr) (*(volatile u64 *)(addr) = (b)) #endif
/*