1 // SPDX-License-Identifier: GPL-2.0+
3 // max77693.c - Regulator driver for the Maxim 77693 and 77843
5 // Copyright (C) 2013-2015 Samsung Electronics
19 #include <linux/mfd/max77693-common.h>
20 #include <linux/mfd/max77693-private.h>
21 #include <linux/mfd/max77843-private.h>
46  * MAX77693 CHARGER regulator - Min : 20mA, Max : 2580mA, step : 20mA
48  * 0x04 ~ 0x7E			= (60 + (X - 3) * 20) mA
58 	unsigned int chg_min_uA = rdev->constraints->min_uA;  in max77693_chg_get_current_limit()
59 	unsigned int chg_max_uA = rdev->constraints->max_uA;  in max77693_chg_get_current_limit()
64 	ret = regmap_read(rdev->regmap, reg_data->linear_reg, &reg);  in max77693_chg_get_current_limit()
68 	sel = reg & reg_data->linear_mask;  in max77693_chg_get_current_limit()
70 	/* the first four codes for charger current are all 60mA */  in max77693_chg_get_current_limit()
71 	if (sel <= reg_data->min_sel)  in max77693_chg_get_current_limit()
74 		sel -= reg_data->min_sel;  in max77693_chg_get_current_limit()
76 	val = chg_min_uA + reg_data->uA_step * sel;  in max77693_chg_get_current_limit()
78 		return -EINVAL;  in max77693_chg_get_current_limit()
87 	unsigned int chg_min_uA = rdev->constraints->min_uA;  in max77693_chg_set_current_limit()
90 	while (chg_min_uA + reg_data->uA_step * sel < min_uA)  in max77693_chg_set_current_limit()
93 	if (chg_min_uA + reg_data->uA_step * sel > max_uA)  in max77693_chg_set_current_limit()
94 		return -EINVAL;  in max77693_chg_set_current_limit()
96 	/* the first four codes for charger current are all 60mA */  in max77693_chg_set_current_limit()
97 	sel += reg_data->min_sel;  in max77693_chg_set_current_limit()
99 	return regmap_write(rdev->regmap, reg_data->linear_reg, sel);  in max77693_chg_set_current_limit()
101 /* end of CHARGER regulator ops */
109 		return max77693->regmap;  in max77693_get_regmap()
115 		return max77693->regmap;  in max77693_get_regmap()
117 		return max77693->regmap_chg;  in max77693_get_regmap()
119 		return max77693->regmap;  in max77693_get_regmap()
134 	.disable		= regulator_disable_regmap,
142 	.disable		= regulator_disable_regmap,
167 		.name = "CHARGER",
169 		.of_match = of_match_ptr("CHARGER"),
208 		.name		= "CHARGER",
211 		.of_match	= of_match_ptr("CHARGER"),
230 	enum max77693_types type = platform_get_device_id(pdev)->driver_data;  in max77693_pmic_probe()
231 	struct max77693_dev *iodev = dev_get_drvdata(pdev->dev.parent);  in max77693_pmic_probe()
237 	config.dev = iodev->dev;  in max77693_pmic_probe()
251 		dev_err(&pdev->dev, "Unsupported device type: %u\n", type);  in max77693_pmic_probe()
252 		return -ENODEV;  in max77693_pmic_probe()
261 		rdev = devm_regulator_register(&pdev->dev,  in max77693_pmic_probe()
264 			dev_err(&pdev->dev,  in max77693_pmic_probe()
265 				"Failed to initialize regulator-%d\n", i);  in max77693_pmic_probe()
274 	{ "max77693-pmic", TYPE_MAX77693 },
275 	{ "max77843-regulator", TYPE_MAX77843 },
283 		   .name = "max77693-pmic",