diff options
Diffstat (limited to 'internal.c')
-rw-r--r-- | internal.c | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -168,3 +168,34 @@ uint32_t internal_chip_readl(const volatile void *addr) return *(volatile uint32_t *) addr; } +/* Little-endian fallback for drivers not supporting 16 bit accesses */ +void fallback_chip_writew(uint16_t val, volatile void *addr) +{ + chip_writeb(val & 0xff, addr); + chip_writeb((val >> 8) & 0xff, addr + 1); +} + +/* Little-endian fallback for drivers not supporting 16 bit accesses */ +uint16_t fallback_chip_readw(const volatile void *addr) +{ + uint16_t val; + val = chip_readb(addr); + val |= chip_readb(addr + 1) << 8; + return val; +} + +/* Little-endian fallback for drivers not supporting 32 bit accesses */ +void fallback_chip_writel(uint32_t val, volatile void *addr) +{ + chip_writew(val & 0xffff, addr); + chip_writew((val >> 16) & 0xffff, addr + 2); +} + +/* Little-endian fallback for drivers not supporting 32 bit accesses */ +uint32_t fallback_chip_readl(const volatile void *addr) +{ + uint32_t val; + val = chip_readw(addr); + val |= chip_readw(addr + 2) << 16; + return val; +} |