1 // SPDX-License-Identifier: GPL-2.0+
3 // max14577.c - Regulator driver for the Maxim 14577/77836
10 #include <linux/regulator/driver.h>
11 #include <linux/mfd/max14577.h>
12 #include <linux/mfd/max14577-private.h>
13 #include <linux/regulator/of_regulator.h>
18 	struct regmap *rmap = rdev->regmap;  in max14577_reg_is_enabled()
32 		return -EINVAL;  in max14577_reg_is_enabled()
39 	struct regmap *rmap = rdev->regmap;  in max14577_reg_get_current_limit()
40 	struct max14577 *max14577 = rdev_get_drvdata(rdev);  in max14577_reg_get_current_limit()  local
42 		&maxim_charger_currents[max14577->dev_type];  in max14577_reg_get_current_limit()
45 		return -EINVAL;  in max14577_reg_get_current_limit()
50 		return limits->min;  in max14577_reg_get_current_limit()
54 	return limits->high_start + reg_data * limits->high_step;  in max14577_reg_get_current_limit()
62 	struct max14577 *max14577 = rdev_get_drvdata(rdev);  in max14577_reg_set_current_limit()  local
64 		&maxim_charger_currents[max14577->dev_type];  in max14577_reg_set_current_limit()
67 		return -EINVAL;  in max14577_reg_set_current_limit()
73 	return max14577_update_reg(rdev->regmap, MAX14577_CHG_REG_CHG_CTRL4,  in max14577_reg_set_current_limit()
162  * Returns proper regmap for accessing regulator passed by id.
164 static struct regmap *max14577_get_regmap(struct max14577 *max14577,  in max14577_get_regmap()  argument
167 	switch (max14577->dev_type) {  in max14577_get_regmap()
171 			return max14577->regmap;  in max14577_get_regmap()
174 			return max14577->regmap_pmic;  in max14577_get_regmap()
179 		return max14577->regmap;  in max14577_get_regmap()
185 	struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);  in max14577_regulator_probe()  local
186 	struct max14577_platform_data *pdata = dev_get_platdata(max14577->dev);  in max14577_regulator_probe()
191 	enum maxim_device_type dev_type = max14577->dev_type;  in max14577_regulator_probe()
204 	config.dev = max14577->dev;  in max14577_regulator_probe()
205 	config.driver_data = max14577;  in max14577_regulator_probe()
208 		struct regulator_dev *regulator;  in max14577_regulator_probe()  local
211 		 * match index of pdata->regulators[].  in max14577_regulator_probe()
213 		if (pdata && pdata->regulators) {  in max14577_regulator_probe()
214 			config.init_data = pdata->regulators[i].initdata;  in max14577_regulator_probe()
215 			config.of_node = pdata->regulators[i].of_node;  in max14577_regulator_probe()
217 		config.regmap = max14577_get_regmap(max14577,  in max14577_regulator_probe()
220 		regulator = devm_regulator_register(&pdev->dev,  in max14577_regulator_probe()
222 		if (IS_ERR(regulator)) {  in max14577_regulator_probe()
223 			ret = PTR_ERR(regulator);  in max14577_regulator_probe()
224 			dev_err(&pdev->dev,  in max14577_regulator_probe()
225 					"Regulator init failed for %d/%s with error: %d\n",  in max14577_regulator_probe()
235 	{ "max14577-regulator", MAXIM_DEVICE_TYPE_MAX14577, },
236 	{ "max77836-regulator", MAXIM_DEVICE_TYPE_MAX77836, },
243 		   .name = "max14577-regulator",
257 			  (MAX77836_REGULATOR_LDO_VOLTAGE_STEPS_NUM - 1)) !=  in max14577_regulator_init()
271 MODULE_DESCRIPTION("Maxim 14577/77836 regulator driver");