1 // SPDX-License-Identifier: GPL-2.0-only
4 // bd71815-regulator.c ROHM BD71815 regulator driver
21 #include <linux/mfd/rohm-generic.h>
22 #include <linux/mfd/rohm-bd71815.h>
31 	10, 20, 30, 50, 70, 100, 200, 300, 500, 700, 1000, 2000, 3000, 4000,
179 	return rohm_regulator_set_dvs_levels(data->dvs, np, desc, cfg->regmap);  in set_hw_dvs_levels()
185  * by a control bit in register - or by HW state. If HW state specific voltages
186  * are given - then we assume HW state based control should be used.
188  * If volatge value is updated to currently selected register - then output
203 	if (of_property_present(np, "rohm,dvs-run-voltage") ||  in buck12_set_hw_dvs_levels()
204 	    of_property_present(np, "rohm,dvs-suspend-voltage") ||  in buck12_set_hw_dvs_levels()
205 	    of_property_present(np, "rohm,dvs-lpsr-voltage") ||  in buck12_set_hw_dvs_levels()
206 	    of_property_present(np, "rohm,dvs-snvs-voltage")) {  in buck12_set_hw_dvs_levels()
207 		ret = regmap_read(cfg->regmap, desc->vsel_reg, &val);  in buck12_set_hw_dvs_levels()
221 			ret = regmap_read(cfg->regmap, desc->vsel_reg + 1,  in buck12_set_hw_dvs_levels()
226 			ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,  in buck12_set_hw_dvs_levels()
233 		ret = rohm_regulator_set_dvs_levels(data->dvs, np, desc,  in buck12_set_hw_dvs_levels()
234 						    cfg->regmap);  in buck12_set_hw_dvs_levels()
238 		 * DVS levels were given => use HW-state machine for voltage  in buck12_set_hw_dvs_levels()
240 		 * by SW the ramp-rate is not respected. Should we disable  in buck12_set_hw_dvs_levels()
243 		ret = regmap_update_bits(cfg->regmap, desc->vsel_reg,  in buck12_set_hw_dvs_levels()
254  * 00: 10.00mV/usec	10mV 1uS
255  * 01: 5.00mV/usec	10mV 2uS
256  * 10: 2.50mV/usec	10mV 4uS
257  * 11: 1.25mV/usec	10mV 8uS
302 	ret = regmap_read(rdev->regmap, regh, &val);  in bd7181x_buck12_get_voltage_sel()
307 	 * If we use HW state machine based voltage reg selection - then we  in bd7181x_buck12_get_voltage_sel()
314 		ret = regmap_read(rdev->regmap, regl, &val);  in bd7181x_buck12_get_voltage_sel()
334 	ret = regmap_read(rdev->regmap, regh, &val);  in bd7181x_buck12_set_voltage_sel()
339 	 * If bucks 1 & 2 are controlled by state machine - then the RUN state  in bd7181x_buck12_set_voltage_sel()
344 		return regmap_update_bits(rdev->regmap, regh, BD71815_VOLT_MASK,  in bd7181x_buck12_set_voltage_sel()
353 	ret = regmap_update_bits(rdev->regmap, reg, BD71815_VOLT_MASK, sel);  in bd7181x_buck12_set_voltage_sel()
358 	return regmap_update_bits(rdev->regmap, regh, BD71815_BUCK_DVSSEL,  in bd7181x_buck12_set_voltage_sel()
432 			.n_voltages = ((max) - (min)) / (step) + 1,	\
455 			.n_voltages = ((max) - (min)) / (step) + 1,	\
501 			.n_voltages = ((max) - (min)) / (step) + 1,	\
568 	regmap = dev_get_regmap(pdev->dev.parent, NULL);  in bd7181x_probe()
570 		dev_err(&pdev->dev, "No parent regmap\n");  in bd7181x_probe()
571 		return -ENODEV;  in bd7181x_probe()
574 	ldo4_en = devm_fwnode_gpiod_get(&pdev->dev,  in bd7181x_probe()
575 					dev_fwnode(pdev->dev.parent),  in bd7181x_probe()
576 					"rohm,vsel", GPIOD_ASIS, "ldo4-en");  in bd7181x_probe()
579 		if (ret != -ENOENT)  in bd7181x_probe()
584 	/* Disable to go to ship-mode */  in bd7181x_probe()
589 	config.dev = pdev->dev.parent;  in bd7181x_probe()
603 		rdev = devm_regulator_register(&pdev->dev, desc, &config);  in bd7181x_probe()
605 			return dev_err_probe(&pdev->dev, PTR_ERR(rdev),  in bd7181x_probe()
607 					     desc->name);  in bd7181x_probe()
613 	{ "bd71815-pmic", ROHM_CHIP_TYPE_BD71815 },
620 		.name = "bd7181x-pmic",
631 MODULE_ALIAS("platform:bd7181x-pmic");