1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Voltage regulation driver for active-semi ACT8945A PMIC
16 #include <dt-bindings/regulator/active-semi,8945a-regulator.h>
52 #define ACT8945A_ENA		0x80	/* ON - [7] */
53 #define ACT8945A_VSEL_MASK	0x3F	/* VSET - [5:0] */
76 static const struct linear_range act8945a_voltage_ranges[] = {
82 static int act8945a_set_suspend_state(struct regulator_dev *rdev, bool enable)  in act8945a_set_suspend_state()
84 	struct regmap *regmap = rdev->regmap;  in act8945a_set_suspend_state()
118 		return -EINVAL;  in act8945a_set_suspend_state()
131 static int act8945a_set_suspend_enable(struct regulator_dev *rdev)  in act8945a_set_suspend_enable()
136 static int act8945a_set_suspend_disable(struct regulator_dev *rdev)  in act8945a_set_suspend_disable()
141 static unsigned int act8945a_of_map_mode(unsigned int mode)  in act8945a_of_map_mode()
154 static int act8945a_set_mode(struct regulator_dev *rdev, unsigned int mode)  in act8945a_set_mode()
157 	struct regmap *regmap = rdev->regmap;  in act8945a_set_mode()
184 		return -EINVAL;  in act8945a_set_mode()
197 		return -EINVAL;  in act8945a_set_mode()
204 	act8945a->op_mode[id] = mode;  in act8945a_set_mode()
209 static unsigned int act8945a_get_mode(struct regulator_dev *rdev)  in act8945a_get_mode()
215 		return -EINVAL;  in act8945a_get_mode()
217 	return act8945a->op_mode[id];  in act8945a_get_mode()
220 static const struct regulator_ops act8945a_ops = {
254 static const struct regulator_desc act8945a_regulators[] = {
264 static const struct regulator_desc act8945a_alt_regulators[] = {
274 static int act8945a_pmic_probe(struct platform_device *pdev)  in act8945a_pmic_probe()
283 	act8945a = devm_kzalloc(&pdev->dev, sizeof(*act8945a), GFP_KERNEL);  in act8945a_pmic_probe()
285 		return -ENOMEM;  in act8945a_pmic_probe()
287 	act8945a->regmap = dev_get_regmap(pdev->dev.parent, NULL);  in act8945a_pmic_probe()
288 	if (!act8945a->regmap) {  in act8945a_pmic_probe()
289 		dev_err(&pdev->dev,  in act8945a_pmic_probe()
291 		return -EINVAL;  in act8945a_pmic_probe()
294 	voltage_select = of_property_read_bool(pdev->dev.parent->of_node,  in act8945a_pmic_probe()
295 					       "active-semi,vsel-high");  in act8945a_pmic_probe()
305 	config.dev = &pdev->dev;  in act8945a_pmic_probe()
306 	config.dev->of_node = pdev->dev.parent->of_node;  in act8945a_pmic_probe()
309 		rdev = devm_regulator_register(&pdev->dev, &regulators[i],  in act8945a_pmic_probe()
312 			dev_err(&pdev->dev,  in act8945a_pmic_probe()
322 	return regmap_write(act8945a->regmap, ACT8945A_SYS_UNLK_REGS, 0xef);  in act8945a_pmic_probe()
325 static int __maybe_unused act8945a_suspend(struct device *pdev)  in act8945a_suspend()
333 	return regmap_write(act8945a->regmap, ACT8945A_SYS_CTRL, 0x42);  in act8945a_suspend()
336 static SIMPLE_DEV_PM_OPS(act8945a_pm, act8945a_suspend, NULL);
338 static void act8945a_pmic_shutdown(struct platform_device *pdev)  in act8945a_pmic_shutdown()
345 	regmap_write(act8945a->regmap, ACT8945A_SYS_CTRL, 0x0);  in act8945a_pmic_shutdown()
348 static struct platform_driver act8945a_pmic_driver = {
350 		.name = "act8945a-regulator",
359 MODULE_DESCRIPTION("Active-semi ACT8945A voltage regulator driver");