GPO                96 drivers/net/wan/hd64572.h #define GPO	0x131	/* General Purpose Output Pin Ctl Reg */
GPO               914 drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c #define GPO		0x2 /* Not GPI */
GPO               432 drivers/staging/rtl8192e/rtl8192e/r8192E_hw.h #define GPO 0x109