diff options
Diffstat (limited to 'drivers/net/smc911x.c')
| -rw-r--r-- | drivers/net/smc911x.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c index 5302cb5..6d93bf0 100644 --- a/drivers/net/smc911x.c +++ b/drivers/net/smc911x.c @@ -30,6 +30,12 @@ #include <net.h> #include <miiphy.h> +#if defined (CONFIG_DRIVER_SMC911X_32_BIT) && \ + defined (CONFIG_DRIVER_SMC911X_16_BIT) +#error "SMC911X: Only one of CONFIG_DRIVER_SMC911X_32_BIT and \ + CONFIG_DRIVER_SMC911X_16_BIT shall be set" +#endif + #ifdef CONFIG_DRIVER_SMC911X_32_BIT static inline u32 reg_read(u32 addr) { @@ -39,9 +45,20 @@ static inline void reg_write(u32 addr, u32 val) { *(volatile u32*)addr = val; } +#elif CONFIG_DRIVER_SMC911X_16_BIT +static inline u32 reg_read(u32 addr) +{ + volatile u16 *addr_16 = (u16 *)addr; + return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16)); +} +static inline void reg_write(u32 addr, u32 val) +{ + *(volatile u16*)addr = (u16)val; + *(volatile u16*)(addr + 2) = (u16)(val >> 16); +} #else -#error "SMC911X: Only 32-bit bus is supported" -#endif +#error "SMC911X: undefined bus width" +#endif /* CONFIG_DRIVER_SMC911X_16_BIT */ #define mdelay(n) udelay((n)*1000) |