1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright 2020 NXP.
4  * NXP PCA9450 pmic driver
56 	.max_register = PCA9450_MAX_REGISTER - 1,
157 	int ret, i;  in buck_set_dvs()  local
161 	if (ret == -EINVAL)  in buck_set_dvs()
166 	for (i = 0; i < desc->n_voltages; i++) {  in buck_set_dvs()
167 		ret = regulator_desc_list_voltage_linear_range(desc, i);  in buck_set_dvs()
171 			i <<= ffs(desc->vsel_mask) - 1;  in buck_set_dvs()
172 			ret = regmap_update_bits(regmap, reg, mask, i);  in buck_set_dvs()
182 		ret = regmap_update_bits(regmap, regulator->desc.enable_reg,  in buck_set_dvs()
194 	const struct pc9450_dvs_config *dvs = &data->dvs;  in pca9450_set_dvs_levels()
197 	int i, ret = 0;  in pca9450_set_dvs_levels()  local
199 	for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {  in pca9450_set_dvs_levels()
200 		switch (i) {  in pca9450_set_dvs_levels()
202 			prop = "nxp,dvs-run-voltage";  in pca9450_set_dvs_levels()
203 			reg = dvs->run_reg;  in pca9450_set_dvs_levels()
204 			mask = dvs->run_mask;  in pca9450_set_dvs_levels()
207 			prop = "nxp,dvs-standby-voltage";  in pca9450_set_dvs_levels()
208 			reg = dvs->standby_reg;  in pca9450_set_dvs_levels()
209 			mask = dvs->standby_mask;  in pca9450_set_dvs_levels()
212 			return -EINVAL;  in pca9450_set_dvs_levels()
215 		ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);  in pca9450_set_dvs_levels()
669 	struct regmap *regmap = pca9450->regmap;  in pca9450_irq_handler()
675 		dev_err(pca9450->dev,  in pca9450_irq_handler()
681 		dev_warn(pca9450->dev, "PWRON interrupt.\n");  in pca9450_irq_handler()
684 		dev_warn(pca9450->dev, "WDOGB interrupt.\n");  in pca9450_irq_handler()
687 		dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");  in pca9450_irq_handler()
690 		dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");  in pca9450_irq_handler()
693 		dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");  in pca9450_irq_handler()
696 		dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");  in pca9450_irq_handler()
699 		dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");  in pca9450_irq_handler()
708 				      of_device_get_match_data(&i2c->dev);  in pca9450_i2c_probe()
712 	unsigned int device_id, i;  in pca9450_i2c_probe()  local
716 	if (!i2c->irq) {  in pca9450_i2c_probe()
717 		dev_err(&i2c->dev, "No IRQ configured?\n");  in pca9450_i2c_probe()
718 		return -EINVAL;  in pca9450_i2c_probe()
721 	pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);  in pca9450_i2c_probe()
723 		return -ENOMEM;  in pca9450_i2c_probe()
728 		pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);  in pca9450_i2c_probe()
732 		pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);  in pca9450_i2c_probe()
735 		dev_err(&i2c->dev, "Unknown device type");  in pca9450_i2c_probe()
736 		return -EINVAL;  in pca9450_i2c_probe()
739 	pca9450->irq = i2c->irq;  in pca9450_i2c_probe()
740 	pca9450->type = type;  in pca9450_i2c_probe()
741 	pca9450->dev = &i2c->dev;  in pca9450_i2c_probe()
743 	dev_set_drvdata(&i2c->dev, pca9450);  in pca9450_i2c_probe()
745 	pca9450->regmap = devm_regmap_init_i2c(i2c,  in pca9450_i2c_probe()
747 	if (IS_ERR(pca9450->regmap)) {  in pca9450_i2c_probe()
748 		dev_err(&i2c->dev, "regmap initialization failed\n");  in pca9450_i2c_probe()
749 		return PTR_ERR(pca9450->regmap);  in pca9450_i2c_probe()
752 	ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);  in pca9450_i2c_probe()
754 		dev_err(&i2c->dev, "Read device id error\n");  in pca9450_i2c_probe()
761 		dev_err(&i2c->dev, "Device id(%x) mismatched\n",  in pca9450_i2c_probe()
763 		return -EINVAL;  in pca9450_i2c_probe()
766 	for (i = 0; i < pca9450->rcnt; i++) {  in pca9450_i2c_probe()
771 		r = &regulator_desc[i];  in pca9450_i2c_probe()
772 		desc = &r->desc;  in pca9450_i2c_probe()
774 		config.regmap = pca9450->regmap;  in pca9450_i2c_probe()
775 		config.dev = pca9450->dev;  in pca9450_i2c_probe()
777 		rdev = devm_regulator_register(pca9450->dev, desc, &config);  in pca9450_i2c_probe()
780 			dev_err(pca9450->dev,  in pca9450_i2c_probe()
782 				desc->name, ret);  in pca9450_i2c_probe()
787 	ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,  in pca9450_i2c_probe()
790 					"pca9450-irq", pca9450);  in pca9450_i2c_probe()
792 		dev_err(pca9450->dev, "Failed to request IRQ: %d\n",  in pca9450_i2c_probe()
793 			pca9450->irq);  in pca9450_i2c_probe()
797 	ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,  in pca9450_i2c_probe()
802 		dev_err(&i2c->dev, "Unmask irq error\n");  in pca9450_i2c_probe()
807 	ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,  in pca9450_i2c_probe()
810 		dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);  in pca9450_i2c_probe()
814 	if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))  in pca9450_i2c_probe()
820 	ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,  in pca9450_i2c_probe()
823 		dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");  in pca9450_i2c_probe()
827 	if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {  in pca9450_i2c_probe()
829 		ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,  in pca9450_i2c_probe()
832 			dev_err(&i2c->dev,  in pca9450_i2c_probe()
843 	pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);  in pca9450_i2c_probe()
845 	if (IS_ERR(pca9450->sd_vsel_gpio)) {  in pca9450_i2c_probe()
846 		dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");  in pca9450_i2c_probe()
847 		return PTR_ERR(pca9450->sd_vsel_gpio);  in pca9450_i2c_probe()
850 	dev_info(&i2c->dev, "%s probed.\n",  in pca9450_i2c_probe()
858 		.compatible = "nxp,pca9450a",
862 		.compatible = "nxp,pca9450b",
866 		.compatible = "nxp,pca9450c",
875 		.name = "nxp-pca9450",
883 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
884 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");