1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright 2020 NXP.
4  * NXP PCA9450 pmic driver
55 	.max_register = PCA9450_MAX_REGISTER - 1,
164 	int ret, i;  in buck_set_dvs()  local
168 	if (ret == -EINVAL)  in buck_set_dvs()
173 	for (i = 0; i < desc->n_voltages; i++) {  in buck_set_dvs()
174 		ret = regulator_desc_list_voltage_linear_range(desc, i);  in buck_set_dvs()
178 			i <<= ffs(desc->vsel_mask) - 1;  in buck_set_dvs()
179 			ret = regmap_update_bits(regmap, reg, mask, i);  in buck_set_dvs()
189 		ret = regmap_update_bits(regmap, regulator->desc.enable_reg,  in buck_set_dvs()
201 	const struct pc9450_dvs_config *dvs = &data->dvs;  in pca9450_set_dvs_levels()
204 	int i, ret = 0;  in pca9450_set_dvs_levels()  local
206 	for (i = 0; i < PCA9450_DVS_LEVEL_MAX; i++) {  in pca9450_set_dvs_levels()
207 		switch (i) {  in pca9450_set_dvs_levels()
209 			prop = "nxp,dvs-run-voltage";  in pca9450_set_dvs_levels()
210 			reg = dvs->run_reg;  in pca9450_set_dvs_levels()
211 			mask = dvs->run_mask;  in pca9450_set_dvs_levels()
214 			prop = "nxp,dvs-standby-voltage";  in pca9450_set_dvs_levels()
215 			reg = dvs->standby_reg;  in pca9450_set_dvs_levels()
216 			mask = dvs->standby_mask;  in pca9450_set_dvs_levels()
219 			return -EINVAL;  in pca9450_set_dvs_levels()
222 		ret = buck_set_dvs(desc, np, cfg->regmap, prop, reg, mask);  in pca9450_set_dvs_levels()
848 	struct regmap *regmap = pca9450->regmap;  in pca9450_irq_handler()
854 		dev_err(pca9450->dev,  in pca9450_irq_handler()
860 		dev_warn(pca9450->dev, "PWRON interrupt.\n");  in pca9450_irq_handler()
863 		dev_warn(pca9450->dev, "WDOGB interrupt.\n");  in pca9450_irq_handler()
866 		dev_warn(pca9450->dev, "VRFLT1 interrupt.\n");  in pca9450_irq_handler()
869 		dev_warn(pca9450->dev, "VRFLT2 interrupt.\n");  in pca9450_irq_handler()
872 		dev_warn(pca9450->dev, "LOWVSYS interrupt.\n");  in pca9450_irq_handler()
875 		dev_warn(pca9450->dev, "IRQ_THERM_105 interrupt.\n");  in pca9450_irq_handler()
878 		dev_warn(pca9450->dev, "IRQ_THERM_125 interrupt.\n");  in pca9450_irq_handler()
886 				      of_device_get_match_data(&i2c->dev);  in pca9450_i2c_probe()
890 	unsigned int device_id, i;  in pca9450_i2c_probe()  local
894 	pca9450 = devm_kzalloc(&i2c->dev, sizeof(struct pca9450), GFP_KERNEL);  in pca9450_i2c_probe()
896 		return -ENOMEM;  in pca9450_i2c_probe()
901 		pca9450->rcnt = ARRAY_SIZE(pca9450a_regulators);  in pca9450_i2c_probe()
905 		pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);  in pca9450_i2c_probe()
909 		pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);  in pca9450_i2c_probe()
912 		dev_err(&i2c->dev, "Unknown device type");  in pca9450_i2c_probe()
913 		return -EINVAL;  in pca9450_i2c_probe()
916 	pca9450->irq = i2c->irq;  in pca9450_i2c_probe()
917 	pca9450->type = type;  in pca9450_i2c_probe()
918 	pca9450->dev = &i2c->dev;  in pca9450_i2c_probe()
920 	dev_set_drvdata(&i2c->dev, pca9450);  in pca9450_i2c_probe()
922 	pca9450->regmap = devm_regmap_init_i2c(i2c,  in pca9450_i2c_probe()
924 	if (IS_ERR(pca9450->regmap)) {  in pca9450_i2c_probe()
925 		dev_err(&i2c->dev, "regmap initialization failed\n");  in pca9450_i2c_probe()
926 		return PTR_ERR(pca9450->regmap);  in pca9450_i2c_probe()
929 	ret = regmap_read(pca9450->regmap, PCA9450_REG_DEV_ID, &device_id);  in pca9450_i2c_probe()
931 		dev_err(&i2c->dev, "Read device id error\n");  in pca9450_i2c_probe()
939 		dev_err(&i2c->dev, "Device id(%x) mismatched\n",  in pca9450_i2c_probe()
941 		return -EINVAL;  in pca9450_i2c_probe()
944 	for (i = 0; i < pca9450->rcnt; i++) {  in pca9450_i2c_probe()
949 		r = &regulator_desc[i];  in pca9450_i2c_probe()
950 		desc = &r->desc;  in pca9450_i2c_probe()
952 		config.regmap = pca9450->regmap;  in pca9450_i2c_probe()
953 		config.dev = pca9450->dev;  in pca9450_i2c_probe()
955 		rdev = devm_regulator_register(pca9450->dev, desc, &config);  in pca9450_i2c_probe()
958 			dev_err(pca9450->dev,  in pca9450_i2c_probe()
960 				desc->name, ret);  in pca9450_i2c_probe()
965 	if (pca9450->irq) {  in pca9450_i2c_probe()
966 		ret = devm_request_threaded_irq(pca9450->dev, pca9450->irq, NULL,  in pca9450_i2c_probe()
969 						"pca9450-irq", pca9450);  in pca9450_i2c_probe()
971 			dev_err(pca9450->dev, "Failed to request IRQ: %d\n",  in pca9450_i2c_probe()
972 				pca9450->irq);  in pca9450_i2c_probe()
976 		ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_INT1_MSK,  in pca9450_i2c_probe()
981 			dev_err(&i2c->dev, "Unmask irq error\n");  in pca9450_i2c_probe()
987 	ret = regmap_clear_bits(pca9450->regmap, PCA9450_REG_BUCK123_DVS,  in pca9450_i2c_probe()
990 		dev_err(&i2c->dev, "Failed to clear PRESET_EN bit: %d\n", ret);  in pca9450_i2c_probe()
994 	if (of_property_read_bool(i2c->dev.of_node, "nxp,wdog_b-warm-reset"))  in pca9450_i2c_probe()
1000 	ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL,  in pca9450_i2c_probe()
1003 		dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n");  in pca9450_i2c_probe()
1007 	if (of_property_read_bool(i2c->dev.of_node, "nxp,i2c-lt-enable")) {  in pca9450_i2c_probe()
1009 		ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_CONFIG2,  in pca9450_i2c_probe()
1012 			dev_err(&i2c->dev,  in pca9450_i2c_probe()
1023 	pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH);  in pca9450_i2c_probe()
1025 	if (IS_ERR(pca9450->sd_vsel_gpio)) {  in pca9450_i2c_probe()
1026 		dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n");  in pca9450_i2c_probe()
1027 		return PTR_ERR(pca9450->sd_vsel_gpio);  in pca9450_i2c_probe()
1030 	dev_info(&i2c->dev, "%s probed.\n",  in pca9450_i2c_probe()
1039 		.compatible = "nxp,pca9450a",
1043 		.compatible = "nxp,pca9450b",
1047 		.compatible = "nxp,pca9450c",
1051 		.compatible = "nxp,pca9451a",
1060 		.name = "nxp-pca9450",
1069 MODULE_AUTHOR("Robin Gong <yibin.gong@nxp.com>");
1070 MODULE_DESCRIPTION("NXP PCA9450 Power Management IC driver");