1 // SPDX-License-Identifier: GPL-2.0+
3 // max77686.c - Regulator driver for the Maxim 77686
21 #include <linux/mfd/max77686-private.h>
43  * Forcing low power mode: LDO1, 3-5, 9, 13, 17-26
48  *  - LDO2, 6-8, 10-12, 14-16
49  *  - buck[1234]
52 /* Low power mode controlled by PWRREQ: All LDOs */
54 /* Forcing low power mode: buck[234] */
94  * replaces "normal" mode. Any change from low power mode to normal
96  * Map normal mode to proper value for such regulators.
105 		if (test_bit(id, max77686->gpio_enabled))  in max77686_map_normal_mode()
112 /* Some BUCKs and LDOs supports Normal[ON/OFF] mode during suspend */
122 	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in max77686_set_suspend_disable()
123 				 rdev->desc->enable_mask, val << shift);  in max77686_set_suspend_disable()
127 	max77686->opmode[id] = val;  in max77686_set_suspend_disable()
131 /* Some LDOs supports [LPM/Normal]ON mode during suspend state */
139 	/* BUCK[5-9] doesn't support this feature */  in max77686_set_suspend_mode()
147 	case REGULATOR_MODE_NORMAL:			/* ON in Normal Mode */  in max77686_set_suspend_mode()
152 			rdev->desc->name, mode);  in max77686_set_suspend_mode()
153 		return -EINVAL;  in max77686_set_suspend_mode()
156 	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in max77686_set_suspend_mode()
157 				  rdev->desc->enable_mask,  in max77686_set_suspend_mode()
162 	max77686->opmode[id] = val;  in max77686_set_suspend_mode()
166 /* Some LDOs supports LPM-ON/OFF/Normal-ON mode during suspend state */
181 	case REGULATOR_MODE_NORMAL:			/* ON in Normal Mode */  in max77686_ldo_set_suspend_mode()
186 			rdev->desc->name, mode);  in max77686_ldo_set_suspend_mode()
187 		return -EINVAL;  in max77686_ldo_set_suspend_mode()
190 	ret = regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in max77686_ldo_set_suspend_mode()
191 				 rdev->desc->enable_mask,  in max77686_ldo_set_suspend_mode()
196 	max77686->opmode[id] = val;  in max77686_ldo_set_suspend_mode()
208 	if (max77686->opmode[id] == MAX77686_OFF_PWRREQ)  in max77686_enable()
209 		max77686->opmode[id] = max77686_map_normal_mode(max77686, id);  in max77686_enable()
211 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in max77686_enable()
212 				  rdev->desc->enable_mask,  in max77686_enable()
213 				  max77686->opmode[id] << shift);  in max77686_enable()
220 	struct max77686_data *max77686 = config->driver_data;  in max77686_of_parse_cb()
223 	switch (desc->id) {  in max77686_of_parse_cb()
227 		config->ena_gpiod = fwnode_gpiod_get_index(  in max77686_of_parse_cb()
232 				"max77686-regulator");  in max77686_of_parse_cb()
233 		if (IS_ERR(config->ena_gpiod))  in max77686_of_parse_cb()
234 			config->ena_gpiod = NULL;  in max77686_of_parse_cb()
240 	if (config->ena_gpiod) {  in max77686_of_parse_cb()
241 		set_bit(desc->id, max77686->gpio_enabled);  in max77686_of_parse_cb()
243 		ret = regmap_update_bits(config->regmap, desc->enable_reg,  in max77686_of_parse_cb()
244 					 desc->enable_mask,  in max77686_of_parse_cb()
247 			gpiod_put(config->ena_gpiod);  in max77686_of_parse_cb()
248 			config->ena_gpiod = NULL;  in max77686_of_parse_cb()
312 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
322 	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
324 	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
331 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
340 	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
342 	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
349 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
358 	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
360 	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
367 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
376 	.vsel_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
378 	.enable_reg	= MAX77686_REG_LDO1CTRL1 + num - 1,		\
385 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
396 	.vsel_reg	= MAX77686_REG_BUCK5OUT + (num - 5) * 2,	\
398 	.enable_reg	= MAX77686_REG_BUCK5CTRL + (num - 5) * 2,	\
404 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
422 	.regulators_node	= of_match_ptr("voltage-regulators"),	\
432 	.vsel_reg	= MAX77686_REG_BUCK2DVS1 + (num - 2) * 10,	\
434 	.enable_reg	= MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10,	\
437 	.ramp_reg	= MAX77686_REG_BUCK2CTRL1 + (num - 2) * 10,	\
483 	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);  in max77686_pmic_probe()
488 	dev_dbg(&pdev->dev, "%s\n", __func__);  in max77686_pmic_probe()
490 	max77686 = devm_kzalloc(&pdev->dev, sizeof(struct max77686_data),  in max77686_pmic_probe()
493 		return -ENOMEM;  in max77686_pmic_probe()
495 	max77686->dev = &pdev->dev;  in max77686_pmic_probe()
496 	config.dev = iodev->dev;  in max77686_pmic_probe()
497 	config.regmap = iodev->regmap;  in max77686_pmic_probe()
505 		max77686->opmode[id] = MAX77686_NORMAL;  in max77686_pmic_probe()
506 		rdev = devm_regulator_register(&pdev->dev,  in max77686_pmic_probe()
510 			dev_err(&pdev->dev,  in max77686_pmic_probe()
520 	{"max77686-pmic", 0},
527 		.name = "max77686-pmic",