CLR32
#define CLR32(reg, bit) PUT32(reg, GET32(reg) & ~(bit))
#define CLR32(dev, offset, v) PUT32(dev, offset, GET32(dev, offset) & ~(v))
#define CLR32(dev, offset, v) PUT32(dev, offset, GET32(dev, offset) & ~(v))
#define CLR32(reg, val) PUT32(reg, GET32(reg) & ~((uint32_t)(val)))