ad9834_write
static IIO_DEV_ATTR_FREQ(0, 0, 0200, NULL, ad9834_write, AD9834_REG_FREQ0);
static IIO_DEV_ATTR_FREQ(0, 1, 0200, NULL, ad9834_write, AD9834_REG_FREQ1);
static IIO_DEV_ATTR_FREQSYMBOL(0, 0200, NULL, ad9834_write, AD9834_FSEL);
static IIO_DEV_ATTR_PHASE(0, 0, 0200, NULL, ad9834_write, AD9834_REG_PHASE0);
static IIO_DEV_ATTR_PHASE(0, 1, 0200, NULL, ad9834_write, AD9834_REG_PHASE1);
static IIO_DEV_ATTR_PHASESYMBOL(0, 0200, NULL, ad9834_write, AD9834_PSEL);
static IIO_DEV_ATTR_PINCONTROL_EN(0, 0200, NULL, ad9834_write, AD9834_PIN_SW);
static IIO_DEV_ATTR_OUT_ENABLE(0, 0200, NULL, ad9834_write, AD9834_RESET);
static IIO_DEV_ATTR_OUTY_ENABLE(0, 1, 0200, NULL, ad9834_write, AD9834_OPBITEN);