68 typedef int (*ad5064_write_func)(struct ad5064_state *st, unsigned int cmd,
124 static int ad5064_write(struct ad5064_state *st, unsigned int cmd,  in ad5064_write()  argument
129 	return st->write(st, cmd, addr, val);  in ad5064_write()
132 static int ad5064_sync_powerdown_mode(struct ad5064_state *st,  in ad5064_sync_powerdown_mode()  argument
140 	if (st->pwr_down[chan->channel])  in ad5064_sync_powerdown_mode()
141 		val |= st->pwr_down_mode[chan->channel] << 8;  in ad5064_sync_powerdown_mode()
143 	ret = ad5064_write(st, AD5064_CMD_POWERDOWN_DAC, 0, val, 0);  in ad5064_sync_powerdown_mode()
157 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_get_powerdown_mode()  local
159 	return st->pwr_down_mode[chan->channel] - 1;  in ad5064_get_powerdown_mode()
165 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_set_powerdown_mode()  local
169 	st->pwr_down_mode[chan->channel] = mode + 1;  in ad5064_set_powerdown_mode()
171 	ret = ad5064_sync_powerdown_mode(st, chan);  in ad5064_set_powerdown_mode()
187 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_read_dac_powerdown()  local
189 	return sprintf(buf, "%d\n", st->pwr_down[chan->channel]);  in ad5064_read_dac_powerdown()
196 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_write_dac_powerdown()  local
205 	st->pwr_down[chan->channel] = pwr_down;  in ad5064_write_dac_powerdown()
207 	ret = ad5064_sync_powerdown_mode(st, chan);  in ad5064_write_dac_powerdown()
212 static int ad5064_get_vref(struct ad5064_state *st,  in ad5064_get_vref()  argument
217 	if (st->use_internal_vref)  in ad5064_get_vref()
218 		return st->chip_info->internal_vref;  in ad5064_get_vref()
220 	i = st->chip_info->shared_vref ? 0 : chan->channel;  in ad5064_get_vref()
221 	return regulator_get_voltage(st->vref_reg[i].consumer);  in ad5064_get_vref()
230 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_read_raw()  local
235 		*val = st->dac_cache[chan->channel];  in ad5064_read_raw()
238 		scale_uv = ad5064_get_vref(st, chan);  in ad5064_read_raw()
254 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_write_raw()  local
263 		ret = ad5064_write(st, AD5064_CMD_WRITE_INPUT_N_UPDATE_N,  in ad5064_write_raw()
266 			st->dac_cache[chan->channel] = val;  in ad5064_write_raw()
423 static inline unsigned int ad5064_num_vref(struct ad5064_state *st)  in ad5064_num_vref()  argument
425 	return st->chip_info->shared_vref ? 1 : st->chip_info->num_channels;  in ad5064_num_vref()
435 static const char * const ad5064_vref_name(struct ad5064_state *st,  in ad5064_vref_name()  argument
438 	return st->chip_info->shared_vref ? "vref" : ad5064_vref_names[vref];  in ad5064_vref_name()
445 	struct ad5064_state *st;  in ad5064_probe()  local
450 	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));  in ad5064_probe()
454 	st = iio_priv(indio_dev);  in ad5064_probe()
457 	st->chip_info = &ad5064_chip_info_tbl[type];  in ad5064_probe()
458 	st->dev = dev;  in ad5064_probe()
459 	st->write = write;  in ad5064_probe()
461 	for (i = 0; i < ad5064_num_vref(st); ++i)  in ad5064_probe()
462 		st->vref_reg[i].supply = ad5064_vref_name(st, i);  in ad5064_probe()
464 	ret = devm_regulator_bulk_get(dev, ad5064_num_vref(st),  in ad5064_probe()
465 		st->vref_reg);  in ad5064_probe()
467 		if (!st->chip_info->internal_vref)  in ad5064_probe()
469 		st->use_internal_vref = true;  in ad5064_probe()
470 		ret = ad5064_write(st, AD5064_CMD_CONFIG, 0,  in ad5064_probe()
478 		ret = regulator_bulk_enable(ad5064_num_vref(st), st->vref_reg);  in ad5064_probe()
487 	indio_dev->channels = st->chip_info->channels;  in ad5064_probe()
488 	indio_dev->num_channels = st->chip_info->num_channels;  in ad5064_probe()
492 	for (i = 0; i < st->chip_info->num_channels; ++i) {  in ad5064_probe()
493 		st->pwr_down_mode[i] = AD5064_LDAC_PWRDN_1K;  in ad5064_probe()
494 		st->dac_cache[i] = midscale;  in ad5064_probe()
504 	if (!st->use_internal_vref)  in ad5064_probe()
505 		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);  in ad5064_probe()
513 	struct ad5064_state *st = iio_priv(indio_dev);  in ad5064_remove()  local
517 	if (!st->use_internal_vref)  in ad5064_remove()
518 		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);  in ad5064_remove()
525 static int ad5064_spi_write(struct ad5064_state *st, unsigned int cmd,  in ad5064_spi_write()  argument
528 	struct spi_device *spi = to_spi_device(st->dev);  in ad5064_spi_write()
530 	st->data.spi = cpu_to_be32(AD5064_CMD(cmd) | AD5064_ADDR(addr) | val);  in ad5064_spi_write()
531 	return spi_write(spi, &st->data.spi, sizeof(st->data.spi));  in ad5064_spi_write()
597 static int ad5064_i2c_write(struct ad5064_state *st, unsigned int cmd,  in ad5064_i2c_write()  argument
600 	struct i2c_client *i2c = to_i2c_client(st->dev);  in ad5064_i2c_write()
602 	st->data.i2c[0] = (cmd << 4) | addr;  in ad5064_i2c_write()
603 	put_unaligned_be16(val, &st->data.i2c[1]);  in ad5064_i2c_write()
604 	return i2c_master_send(i2c, st->data.i2c, 3);  in ad5064_i2c_write()