17 #define GPFSEL(base, n) (base + 0x00 + 0x04 * n)  argument
18 #define GPSET(base, n)  (base + 0x1C + 0x04 * n)  argument
19 #define GPCLR(base, n)  (base + 0x28 + 0x04 * n)  argument
20 #define GPLEV(base, n)  (base + 0x34 + 0x04 * n)  argument
21 #define GPEDS(base, n)  (base + 0x40 + 0x04 * n)  argument
22 #define GPREN(base, n)  (base + 0x4C + 0x04 * n)  argument
23 #define GPFEN(base, n)  (base + 0x58 + 0x04 * n)  argument
24 #define GPHEN(base, n)  (base + 0x64 + 0x04 * n)  argument
25 #define GPLEN(base, n)  (base + 0x70 + 0x04 * n)  argument
26 #define GPAREN(base, n) (base + 0x7C + 0x04 * n)  argument
27 #define GPAFEN(base, n) (base + 0x88 + 0x04 * n)  argument
28 #define GPPULL(base, n) (base + 0xE4 + 0x04 * n)  argument
64 	mem_addr_t base;  member