181 static int ad5758_spi_reg_read(struct ad5758_state *st, unsigned int addr)  in ad5758_spi_reg_read()  argument
185 			.tx_buf = &st->d32[0],  in ad5758_spi_reg_read()
189 			.tx_buf = &st->d32[1],  in ad5758_spi_reg_read()
190 			.rx_buf = &st->d32[2],  in ad5758_spi_reg_read()
196 	st->d32[0] = cpu_to_be32(  in ad5758_spi_reg_read()
199 	st->d32[1] = cpu_to_be32(AD5758_WR_FLAG_MSK(AD5758_NOP) << 24);  in ad5758_spi_reg_read()
201 	ret = spi_sync_transfer(st->spi, t, ARRAY_SIZE(t));  in ad5758_spi_reg_read()
205 	return (be32_to_cpu(st->d32[2]) >> 8) & 0xFFFF;  in ad5758_spi_reg_read()
208 static int ad5758_spi_reg_write(struct ad5758_state *st,  in ad5758_spi_reg_write()  argument
212 	st->d32[0] = cpu_to_be32((AD5758_WR_FLAG_MSK(addr) << 24) |  in ad5758_spi_reg_write()
215 	return spi_write(st->spi, &st->d32[0], sizeof(st->d32[0]));  in ad5758_spi_reg_write()
218 static int ad5758_spi_write_mask(struct ad5758_state *st,  in ad5758_spi_write_mask()  argument
225 	regval = ad5758_spi_reg_read(st, addr);  in ad5758_spi_write_mask()
232 	return ad5758_spi_reg_write(st, addr, regval);  in ad5758_spi_write_mask()
253 static int ad5758_wait_for_task_complete(struct ad5758_state *st,  in ad5758_wait_for_task_complete()  argument
262 		ret = ad5758_spi_reg_read(st, reg);  in ad5758_wait_for_task_complete()
272 	dev_err(&st->spi->dev,  in ad5758_wait_for_task_complete()
278 static int ad5758_calib_mem_refresh(struct ad5758_state *st)  in ad5758_calib_mem_refresh()  argument
282 	ret = ad5758_spi_reg_write(st, AD5758_KEY,  in ad5758_calib_mem_refresh()
285 		dev_err(&st->spi->dev,  in ad5758_calib_mem_refresh()
291 	return ad5758_wait_for_task_complete(st, AD5758_DIGITAL_DIAG_RESULTS,  in ad5758_calib_mem_refresh()
295 static int ad5758_soft_reset(struct ad5758_state *st)  in ad5758_soft_reset()  argument
299 	ret = ad5758_spi_reg_write(st, AD5758_KEY, AD5758_KEY_CODE_RESET_1);  in ad5758_soft_reset()
303 	ret = ad5758_spi_reg_write(st, AD5758_KEY, AD5758_KEY_CODE_RESET_2);  in ad5758_soft_reset()
311 static int ad5758_set_dc_dc_conv_mode(struct ad5758_state *st,  in ad5758_set_dc_dc_conv_mode()  argument
316 	ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,  in ad5758_set_dc_dc_conv_mode()
326 	ret = ad5758_wait_for_task_complete(st, AD5758_DCDC_CONFIG2,  in ad5758_set_dc_dc_conv_mode()
331 	st->dc_dc_mode = mode;  in ad5758_set_dc_dc_conv_mode()
336 static int ad5758_set_dc_dc_ilim(struct ad5758_state *st, unsigned int ilim)  in ad5758_set_dc_dc_ilim()  argument
340 	ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG2,  in ad5758_set_dc_dc_ilim()
349 	return ad5758_wait_for_task_complete(st, AD5758_DCDC_CONFIG2,  in ad5758_set_dc_dc_ilim()
353 static int ad5758_slew_rate_set(struct ad5758_state *st,  in ad5758_slew_rate_set()  argument
368 	ret = ad5758_spi_write_mask(st, AD5758_DAC_CONFIG, mask, mode);  in ad5758_slew_rate_set()
373 	return ad5758_wait_for_task_complete(st, AD5758_DIGITAL_DIAG_RESULTS,  in ad5758_slew_rate_set()
377 static int ad5758_slew_rate_config(struct ad5758_state *st)  in ad5758_slew_rate_config()  argument
402 		do_div(sr_step, st->slew_time);  in ad5758_slew_rate_config()
419 		diff_new = abs(st->slew_time - calc_slew_time);  in ad5758_slew_rate_config()
427 	return ad5758_slew_rate_set(st, sr_clk_idx, sr_step_idx);  in ad5758_slew_rate_config()
430 static int ad5758_set_out_range(struct ad5758_state *st, int range)  in ad5758_set_out_range()  argument
434 	ret = ad5758_spi_write_mask(st, AD5758_DAC_CONFIG,  in ad5758_set_out_range()
441 	return ad5758_wait_for_task_complete(st, AD5758_DIGITAL_DIAG_RESULTS,  in ad5758_set_out_range()
445 static int ad5758_fault_prot_switch_en(struct ad5758_state *st, bool enable)  in ad5758_fault_prot_switch_en()  argument
449 	ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,  in ad5758_fault_prot_switch_en()
458 	return ad5758_wait_for_task_complete(st, AD5758_DCDC_CONFIG2,  in ad5758_fault_prot_switch_en()
462 static int ad5758_internal_buffers_en(struct ad5758_state *st, bool enable)  in ad5758_internal_buffers_en()  argument
466 	ret = ad5758_spi_write_mask(st, AD5758_DAC_CONFIG,  in ad5758_internal_buffers_en()
473 	return ad5758_wait_for_task_complete(st, AD5758_DIGITAL_DIAG_RESULTS,  in ad5758_internal_buffers_en()
482 	struct ad5758_state *st = iio_priv(indio_dev);  in ad5758_reg_access()  local
485 	mutex_lock(&st->lock);  in ad5758_reg_access()
487 		ret = ad5758_spi_reg_read(st, reg);  in ad5758_reg_access()
489 			mutex_unlock(&st->lock);  in ad5758_reg_access()
496 		ret = ad5758_spi_reg_write(st, reg, writeval);  in ad5758_reg_access()
498 	mutex_unlock(&st->lock);  in ad5758_reg_access()
507 	struct ad5758_state *st = iio_priv(indio_dev);  in ad5758_read_raw()  local
512 		mutex_lock(&st->lock);  in ad5758_read_raw()
513 		ret = ad5758_spi_reg_read(st, AD5758_DAC_INPUT);  in ad5758_read_raw()
514 		mutex_unlock(&st->lock);  in ad5758_read_raw()
521 		min = st->out_range.min;  in ad5758_read_raw()
522 		max = st->out_range.max;  in ad5758_read_raw()
527 		min = st->out_range.min;  in ad5758_read_raw()
528 		max = st->out_range.max;  in ad5758_read_raw()
540 	struct ad5758_state *st = iio_priv(indio_dev);  in ad5758_write_raw()  local
545 		mutex_lock(&st->lock);  in ad5758_write_raw()
546 		ret = ad5758_spi_reg_write(st, AD5758_DAC_INPUT, val);  in ad5758_write_raw()
547 		mutex_unlock(&st->lock);  in ad5758_write_raw()
559 	struct ad5758_state *st = iio_priv(indio_dev);  in ad5758_read_powerdown()  local
561 	return sprintf(buf, "%d\n", st->pwr_down);  in ad5758_read_powerdown()
569 	struct ad5758_state *st = iio_priv(indio_dev);  in ad5758_write_powerdown()  local
579 	mutex_lock(&st->lock);  in ad5758_write_powerdown()
584 		dc_dc_mode = st->dc_dc_mode;  in ad5758_write_powerdown()
593 	ret = ad5758_spi_write_mask(st, AD5758_DCDC_CONFIG1,  in ad5758_write_powerdown()
604 	ret = ad5758_spi_write_mask(st, AD5758_DAC_CONFIG,  in ad5758_write_powerdown()
610 	st->pwr_down = pwr_down;  in ad5758_write_powerdown()
613 	mutex_unlock(&st->lock);  in ad5758_write_powerdown()
664 static int ad5758_crc_disable(struct ad5758_state *st)  in ad5758_crc_disable()  argument
669 	st->d32[0] = cpu_to_be32(mask);  in ad5758_crc_disable()
671 	return spi_write(st->spi, &st->d32[0], 4);  in ad5758_crc_disable()
674 static int ad5758_find_out_range(struct ad5758_state *st,  in ad5758_find_out_range()  argument
683 			st->out_range.reg = range[i].reg;  in ad5758_find_out_range()
684 			st->out_range.min = range[i].min;  in ad5758_find_out_range()
685 			st->out_range.max = range[i].max;  in ad5758_find_out_range()
694 static int ad5758_parse_dt(struct ad5758_state *st)  in ad5758_parse_dt()  argument
700 	st->dc_dc_ilim = 0;  in ad5758_parse_dt()
701 	ret = device_property_read_u32(&st->spi->dev,  in ad5758_parse_dt()
704 		dev_dbg(&st->spi->dev,  in ad5758_parse_dt()
711 			dev_dbg(&st->spi->dev, "dc-dc-ilim out of range\n");  in ad5758_parse_dt()
713 			st->dc_dc_ilim = index - ad5758_dc_dc_ilim;  in ad5758_parse_dt()
716 	ret = device_property_read_u32(&st->spi->dev, "adi,dc-dc-mode",  in ad5758_parse_dt()
717 				       &st->dc_dc_mode);  in ad5758_parse_dt()
719 		dev_err(&st->spi->dev, "Missing \"dc-dc-mode\" property\n");  in ad5758_parse_dt()
723 	if (!ad5758_is_valid_mode(st->dc_dc_mode))  in ad5758_parse_dt()
726 	if (st->dc_dc_mode == AD5758_DCDC_MODE_DPC_VOLTAGE) {  in ad5758_parse_dt()
727 		ret = device_property_read_u32_array(&st->spi->dev,  in ad5758_parse_dt()
731 			dev_err(&st->spi->dev,  in ad5758_parse_dt()
738 		ret = device_property_read_u32_array(&st->spi->dev,  in ad5758_parse_dt()
742 			dev_err(&st->spi->dev,  in ad5758_parse_dt()
750 	ret = ad5758_find_out_range(st, range, size, tmparray[0], tmparray[1]);  in ad5758_parse_dt()
752 		dev_err(&st->spi->dev, "range invalid\n");  in ad5758_parse_dt()
756 	ret = device_property_read_u32(&st->spi->dev, "adi,slew-time-us", &tmp);  in ad5758_parse_dt()
758 		dev_dbg(&st->spi->dev, "Missing \"slew-time-us\" property\n");  in ad5758_parse_dt()
759 		st->slew_time = 0;  in ad5758_parse_dt()
761 		st->slew_time = tmp;  in ad5758_parse_dt()
767 static int ad5758_init(struct ad5758_state *st)  in ad5758_init()  argument
772 	ret = ad5758_crc_disable(st);  in ad5758_init()
777 	ret = ad5758_soft_reset(st);  in ad5758_init()
782 	ret = ad5758_crc_disable(st);  in ad5758_init()
787 	ret = ad5758_calib_mem_refresh(st);  in ad5758_init()
791 	regval = ad5758_spi_reg_read(st, AD5758_DIGITAL_DIAG_RESULTS);  in ad5758_init()
796 	ret = ad5758_spi_reg_write(st, AD5758_DIGITAL_DIAG_RESULTS, regval);  in ad5758_init()
801 	ret = ad5758_set_dc_dc_ilim(st, st->dc_dc_ilim);  in ad5758_init()
806 	ret = ad5758_set_dc_dc_conv_mode(st, st->dc_dc_mode);  in ad5758_init()
811 	ret = ad5758_set_out_range(st, st->out_range.reg);  in ad5758_init()
816 	if (st->slew_time) {  in ad5758_init()
817 		ret = ad5758_slew_rate_config(st);  in ad5758_init()
823 	ret = ad5758_fault_prot_switch_en(st, 1);  in ad5758_init()
828 	ret = ad5758_internal_buffers_en(st, 1);  in ad5758_init()
833 	return ad5758_spi_write_mask(st, AD5758_DAC_CONFIG,  in ad5758_init()
840 	struct ad5758_state *st;  in ad5758_probe()  local
844 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));  in ad5758_probe()
848 	st = iio_priv(indio_dev);  in ad5758_probe()
851 	st->spi = spi;  in ad5758_probe()
853 	mutex_init(&st->lock);  in ad5758_probe()
861 	ret = ad5758_parse_dt(st);  in ad5758_probe()
865 	if (st->dc_dc_mode == AD5758_DCDC_MODE_DPC_VOLTAGE)  in ad5758_probe()
870 	ret = ad5758_init(st);  in ad5758_probe()
876 	return devm_iio_device_register(&st->spi->dev, indio_dev);  in ad5758_probe()