JZ_GPIO_PAT1C
writereg(reg + JZ_GPIO_PAT1C, mask); /* make output */
writereg(reg + JZ_GPIO_PAT1C, mask); /* select 0 */
writereg(reg + JZ_GPIO_PAT1C, mask); /* select 1 */
writereg(reg + JZ_GPIO_PAT1C, mask); /* level trigger */
writereg(reg + JZ_GPIO_PAT1C, mask); /* level trigger */