95 static int ad5686_spi_write(struct ad5686_state *st,  in ad5686_spi_write()  argument
100 	st->data[0].d32 = cpu_to_be32(AD5686_CMD(cmd) |  in ad5686_spi_write()
104 	return spi_write(st->spi, &st->data[0].d8[1], 3);  in ad5686_spi_write()
107 static int ad5686_spi_read(struct ad5686_state *st, u8 addr)  in ad5686_spi_read()  argument
111 			.tx_buf = &st->data[0].d8[1],  in ad5686_spi_read()
115 			.tx_buf = &st->data[1].d8[1],  in ad5686_spi_read()
116 			.rx_buf = &st->data[2].d8[1],  in ad5686_spi_read()
122 	st->data[0].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_READBACK_ENABLE) |  in ad5686_spi_read()
124 	st->data[1].d32 = cpu_to_be32(AD5686_CMD(AD5686_CMD_NOOP));  in ad5686_spi_read()
126 	ret = spi_sync_transfer(st->spi, t, ARRAY_SIZE(t));  in ad5686_spi_read()
130 	return be32_to_cpu(st->data[2].d32);  in ad5686_spi_read()
142 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_get_powerdown_mode()  local
144 	return ((st->pwr_down_mode >> (chan->channel * 2)) & 0x3) - 1;  in ad5686_get_powerdown_mode()
150 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_set_powerdown_mode()  local
152 	st->pwr_down_mode &= ~(0x3 << (chan->channel * 2));  in ad5686_set_powerdown_mode()
153 	st->pwr_down_mode |= ((mode + 1) << (chan->channel * 2));  in ad5686_set_powerdown_mode()
168 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_read_dac_powerdown()  local
170 	return sprintf(buf, "%d\n", !!(st->pwr_down_mask &  in ad5686_read_dac_powerdown()
180 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_write_dac_powerdown()  local
187 		st->pwr_down_mask |= (0x3 << (chan->channel * 2));  in ad5686_write_dac_powerdown()
189 		st->pwr_down_mask &= ~(0x3 << (chan->channel * 2));  in ad5686_write_dac_powerdown()
191 	ret = ad5686_spi_write(st, AD5686_CMD_POWERDOWN_DAC, 0,  in ad5686_write_dac_powerdown()
192 			       st->pwr_down_mask & st->pwr_down_mode, 0);  in ad5686_write_dac_powerdown()
203 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_read_raw()  local
209 		ret = ad5686_spi_read(st, chan->address);  in ad5686_read_raw()
216 		*val = st->vref_mv;  in ad5686_read_raw()
229 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_write_raw()  local
238 		ret = ad5686_spi_write(st,  in ad5686_write_raw()
314 	struct ad5686_state *st;  in ad5686_probe()  local
318 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in ad5686_probe()
322 	st = iio_priv(indio_dev);  in ad5686_probe()
325 	st->reg = devm_regulator_get_optional(&spi->dev, "vcc");  in ad5686_probe()
326 	if (!IS_ERR(st->reg)) {  in ad5686_probe()
327 		ret = regulator_enable(st->reg);  in ad5686_probe()
331 		ret = regulator_get_voltage(st->reg);  in ad5686_probe()
338 	st->chip_info =  in ad5686_probe()
342 		st->vref_mv = voltage_uv / 1000;  in ad5686_probe()
344 		st->vref_mv = st->chip_info->int_vref_mv;  in ad5686_probe()
346 	st->spi = spi;  in ad5686_probe()
349 	st->pwr_down_mode = 0x55;  in ad5686_probe()
355 	indio_dev->channels = st->chip_info->channel;  in ad5686_probe()
358 	ret = ad5686_spi_write(st, AD5686_CMD_INTERNAL_REFER_SETUP, 0,  in ad5686_probe()
370 	if (!IS_ERR(st->reg))  in ad5686_probe()
371 		regulator_disable(st->reg);  in ad5686_probe()
378 	struct ad5686_state *st = iio_priv(indio_dev);  in ad5686_remove()  local
381 	if (!IS_ERR(st->reg))  in ad5686_remove()
382 		regulator_disable(st->reg);  in ad5686_remove()