XREG_POWER_DOWN    31 drivers/media/tuners/tuner-xc2028.c #define XREG_POWER_DOWN   0x08
XREG_POWER_DOWN   126 drivers/media/tuners/xc4000.c #define XREG_POWER_DOWN   0x08
XREG_POWER_DOWN    87 drivers/media/tuners/xc5000.c #define XREG_POWER_DOWN   0x0A /* Obsolete */