[mirror_ubuntu-zesty-kernel.git] / drivers / regulator / axp20x-regulator.c

/*
 * AXP20x regulators driver.
 *
 * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License. See the file "COPYING" in the main directory of this
 * archive for more details.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/axp20x.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>

#define AXP20X_IO_ENABLED		0x03
#define AXP20X_IO_DISABLED		0x07

#define AXP22X_IO_ENABLED		0x04
#define AXP22X_IO_DISABLED		0x03

#define AXP20X_WORKMODE_DCDC2_MASK	BIT(2)
#define AXP20X_WORKMODE_DCDC3_MASK	BIT(1)
#define AXP22X_WORKMODE_DCDCX_MASK(x)	BIT(x)

#define AXP20X_FREQ_DCDC_MASK		0x0f

#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg,	\
		    _vmask, _ereg, _emask, _enable_val, _disable_val)		\
	[_family##_##_id] = {							\
		.name		= #_id,						\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (((_max) - (_min)) / (_step) + 1),		\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_min) * 1000,				\
		.uV_step	= (_step) * 1000,				\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.enable_val	= (_enable_val),				\
		.disable_val	= (_disable_val),				\
		.ops		= &axp20x_ops,					\
	}

#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg,	\
		 _vmask, _ereg, _emask) 					\
	[_family##_##_id] = {							\
		.name		= #_id,						\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (((_max) - (_min)) / (_step) + 1),		\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_min) * 1000,				\
		.uV_step	= (_step) * 1000,				\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.ops		= &axp20x_ops,					\
	}

#define AXP_DESC_SW(_family, _id, _match, _supply, _min, _max, _step, _vreg,	\
		    _vmask, _ereg, _emask) 					\
	[_family##_##_id] = {							\
		.name		= #_id,						\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (((_max) - (_min)) / (_step) + 1),		\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_min) * 1000,				\
		.uV_step	= (_step) * 1000,				\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.ops		= &axp20x_ops_sw,				\
	}

#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt)			\
	[_family##_##_id] = {							\
		.name		= #_id,						\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= 1,						\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_volt) * 1000,				\
		.ops		= &axp20x_ops_fixed				\
	}

#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask,	\
		       _ereg, _emask)						\
	[_family##_##_id] = {							\
		.name		= #_id,						\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= ARRAY_SIZE(_table),				\
		.owner		= THIS_MODULE,					\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.volt_table	= (_table),					\
		.ops		= &axp20x_ops_table,				\
	}

static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000, 1600000,
					1700000, 1800000, 1900000, 2000000, 2500000,
					2700000, 2800000, 3000000, 3100000, 3200000,
					3300000 };

static struct regulator_ops axp20x_ops_fixed = {
	.list_voltage		= regulator_list_voltage_linear,
};

static struct regulator_ops axp20x_ops_table = {
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_table,
	.map_voltage		= regulator_map_voltage_ascend,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static struct regulator_ops axp20x_ops = {
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static struct regulator_ops axp20x_ops_sw = {
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static const struct regulator_desc axp20x_regulators[] = {
	AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
		 AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
	AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
		 AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
	AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
	AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
		 AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
	AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
		 AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
	AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
		       AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
	AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
		    AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
		    AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
};

static const struct regulator_desc axp22x_regulators[] = {
	AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
		 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
		 AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
		 AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
		 AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
	AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
		 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
	/* secondary switchable output of DCDC1 */
	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", "dcdc1", 1600, 3400, 100,
		    AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(7)),
	/* LDO regulator internally chained to DCDC5 */
	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", "dcdc5", 700, 1400, 100,
		 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
	AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
	AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
	AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
	AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 1800, 3300, 100,
		    AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 1800, 3300, 100,
		    AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
};

static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
{
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	u32 min, max, def, step;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		min = 750;
		max = 1875;
		def = 1500;
		step = 75;
		break;
	case AXP221_ID:
		min = 1800;
		max = 4050;
		def = 3000;
		step = 150;
		break;
	default:
		dev_err(&pdev->dev,
			"Setting DCDC frequency for unsupported AXP variant\n");
		return -EINVAL;
	}

	if (dcdcfreq == 0)
		dcdcfreq = def;

	if (dcdcfreq < min) {
		dcdcfreq = min;
		dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
			 min);
	}

	if (dcdcfreq > max) {
		dcdcfreq = max;
		dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
			 max);
	}

	dcdcfreq = (dcdcfreq - min) / step;

	return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
				  AXP20X_FREQ_DCDC_MASK, dcdcfreq);
}

static int axp20x_regulator_parse_dt(struct platform_device *pdev)
{
	struct device_node *np, *regulators;
	int ret;
	u32 dcdcfreq = 0;

	np = of_node_get(pdev->dev.parent->of_node);
	if (!np)
		return 0;

	regulators = of_get_child_by_name(np, "regulators");
	if (!regulators) {
		dev_warn(&pdev->dev, "regulators node not found\n");
	} else {
		of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
		ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
		if (ret < 0) {
			dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
			return ret;
		}

		of_node_put(regulators);
	}

	return 0;
}

static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
{
	struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
	unsigned int mask;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
			return -EINVAL;

		mask = AXP20X_WORKMODE_DCDC2_MASK;
		if (id == AXP20X_DCDC3)
			mask = AXP20X_WORKMODE_DCDC3_MASK;

		workmode <<= ffs(mask) - 1;
		break;

	case AXP221_ID:
		if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
			return -EINVAL;

		mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
		workmode <<= id - AXP22X_DCDC1;
		break;

	default:
		/* should not happen */
		WARN_ON(1);
		return -EINVAL;
	}

	return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
}

static int axp20x_regulator_probe(struct platform_device *pdev)
{
	struct regulator_dev *rdev;
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	const struct regulator_desc *regulators;
	struct regulator_config config = {
		.dev = pdev->dev.parent,
		.regmap = axp20x->regmap,
		.driver_data = axp20x,
	};
	int ret, i, nregulators;
	u32 workmode;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		regulators = axp20x_regulators;
		nregulators = AXP20X_REG_ID_MAX;
		break;
	case AXP221_ID:
		regulators = axp22x_regulators;
		nregulators = AXP22X_REG_ID_MAX;
		break;
	default:
		dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
			axp20x->variant);
		return -EINVAL;
	}

	/* This only sets the dcdc freq. Ignore any errors */
	axp20x_regulator_parse_dt(pdev);

	for (i = 0; i < nregulators; i++) {
		rdev = devm_regulator_register(&pdev->dev, &regulators[i],
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register %s\n",
				regulators[i].name);

			return PTR_ERR(rdev);
		}

		ret = of_property_read_u32(rdev->dev.of_node,
					   "x-powers,dcdc-workmode",
					   &workmode);
		if (!ret) {
			if (axp20x_set_dcdc_workmode(rdev, i, workmode))
				dev_err(&pdev->dev, "Failed to set workmode on %s\n",
					rdev->desc->name);
		}
	}

	return 0;
}

static struct platform_driver axp20x_regulator_driver = {
	.probe	= axp20x_regulator_probe,
	.driver	= {
		.name		= "axp20x-regulator",
	},
};

module_platform_driver(axp20x_regulator_driver);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
MODULE_ALIAS("platform:axp20x-regulator");
Commit	Line	Data
dfe7a1b0 CC	1	/*
	2	* AXP20x regulators driver.
	3	*
	4	* Copyright (C) 2013 Carlo Caione <carlo@caione.org>
	5	*
	6	* This file is subject to the terms and conditions of the GNU General
	7	* Public License. See the file "COPYING" in the main directory of this
	8	* archive for more details.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*/
	15
	16	#include <linux/err.h>
	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/of.h>
	20	#include <linux/of_device.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/regmap.h>
	23	#include <linux/mfd/axp20x.h>
	24	#include <linux/regulator/driver.h>
	25	#include <linux/regulator/of_regulator.h>
	26
	27	#define AXP20X_IO_ENABLED 0x03
	28	#define AXP20X_IO_DISABLED 0x07
	29
1b82b4e4 BB	30	#define AXP22X_IO_ENABLED 0x04
	31	#define AXP22X_IO_DISABLED 0x03
	32
dfe7a1b0 CC	33	#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
dfe7a1b0 CC	34	#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
1b82b4e4	35	#define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x)
dfe7a1b0 CC	36
	37	#define AXP20X_FREQ_DCDC_MASK 0x0f
	38
866bd951 BB	39	#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
	40	_vmask, _ereg, _emask, _enable_val, _disable_val) \
	41	[_family##_##_id] = { \
dfe7a1b0 CC	42	.name = #_id, \
dfe7a1b0 CC	43	.supply_name = (_supply), \
880fe82d CYT	44	.of_match = of_match_ptr(_match), \
880fe82d CYT	45	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	46	.type = REGULATOR_VOLTAGE, \
866bd951	47	.id = _family##_##_id, \
dfe7a1b0 CC	48	.n_voltages = (((_max) - (_min)) / (_step) + 1), \
	49	.owner = THIS_MODULE, \
	50	.min_uV = (_min) * 1000, \
	51	.uV_step = (_step) * 1000, \
	52	.vsel_reg = (_vreg), \
	53	.vsel_mask = (_vmask), \
	54	.enable_reg = (_ereg), \
	55	.enable_mask = (_emask), \
	56	.enable_val = (_enable_val), \
	57	.disable_val = (_disable_val), \
	58	.ops = &axp20x_ops, \
	59	}
	60
866bd951 BB	61	#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
	62	_vmask, _ereg, _emask) \
	63	[_family##_##_id] = { \
dfe7a1b0 CC	64	.name = #_id, \
dfe7a1b0 CC	65	.supply_name = (_supply), \
880fe82d CYT	66	.of_match = of_match_ptr(_match), \
880fe82d CYT	67	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	68	.type = REGULATOR_VOLTAGE, \
866bd951	69	.id = _family##_##_id, \
dfe7a1b0 CC	70	.n_voltages = (((_max) - (_min)) / (_step) + 1), \
	71	.owner = THIS_MODULE, \
	72	.min_uV = (_min) * 1000, \
	73	.uV_step = (_step) * 1000, \
	74	.vsel_reg = (_vreg), \
	75	.vsel_mask = (_vmask), \
	76	.enable_reg = (_ereg), \
	77	.enable_mask = (_emask), \
	78	.ops = &axp20x_ops, \
	79	}
	80
1b82b4e4 BB	81	#define AXP_DESC_SW(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
	82	_vmask, _ereg, _emask) \
	83	[_family##_##_id] = { \
	84	.name = #_id, \
	85	.supply_name = (_supply), \
	86	.of_match = of_match_ptr(_match), \
	87	.regulators_node = of_match_ptr("regulators"), \
	88	.type = REGULATOR_VOLTAGE, \
	89	.id = _family##_##_id, \
	90	.n_voltages = (((_max) - (_min)) / (_step) + 1), \
	91	.owner = THIS_MODULE, \
	92	.min_uV = (_min) * 1000, \
	93	.uV_step = (_step) * 1000, \
	94	.vsel_reg = (_vreg), \
	95	.vsel_mask = (_vmask), \
	96	.enable_reg = (_ereg), \
	97	.enable_mask = (_emask), \
	98	.ops = &axp20x_ops_sw, \
	99	}
	100
866bd951 BB	101	#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
866bd951 BB	102	[_family##_##_id] = { \
dfe7a1b0 CC	103	.name = #_id, \
dfe7a1b0 CC	104	.supply_name = (_supply), \
880fe82d CYT	105	.of_match = of_match_ptr(_match), \
880fe82d CYT	106	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	107	.type = REGULATOR_VOLTAGE, \
866bd951	108	.id = _family##_##_id, \
dfe7a1b0 CC	109	.n_voltages = 1, \
	110	.owner = THIS_MODULE, \
	111	.min_uV = (_volt) * 1000, \
	112	.ops = &axp20x_ops_fixed \
	113	}
	114
866bd951 BB	115	#define AXP_DESC_TABLE(_family, _id, _match, _supply, _table, _vreg, _vmask, \
	116	_ereg, _emask) \
	117	[_family##_##_id] = { \
dfe7a1b0 CC	118	.name = #_id, \
dfe7a1b0 CC	119	.supply_name = (_supply), \
880fe82d CYT	120	.of_match = of_match_ptr(_match), \
880fe82d CYT	121	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	122	.type = REGULATOR_VOLTAGE, \
866bd951	123	.id = _family##_##_id, \
dfe7a1b0 CC	124	.n_voltages = ARRAY_SIZE(_table), \
	125	.owner = THIS_MODULE, \
	126	.vsel_reg = (_vreg), \
	127	.vsel_mask = (_vmask), \
	128	.enable_reg = (_ereg), \
	129	.enable_mask = (_emask), \
	130	.volt_table = (_table), \
	131	.ops = &axp20x_ops_table, \
	132	}
	133
	134	static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000, 1600000,
	135	1700000, 1800000, 1900000, 2000000, 2500000,
	136	2700000, 2800000, 3000000, 3100000, 3200000,
	137	3300000 };
	138
	139	static struct regulator_ops axp20x_ops_fixed = {
	140	.list_voltage = regulator_list_voltage_linear,
	141	};
	142
	143	static struct regulator_ops axp20x_ops_table = {
	144	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	145	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	146	.list_voltage = regulator_list_voltage_table,
b8870356	147	.map_voltage = regulator_map_voltage_ascend,
dfe7a1b0 CC	148	.enable = regulator_enable_regmap,
	149	.disable = regulator_disable_regmap,
	150	.is_enabled = regulator_is_enabled_regmap,
	151	};
	152
	153	static struct regulator_ops axp20x_ops = {
	154	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	155	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	156	.list_voltage = regulator_list_voltage_linear,
	157	.enable = regulator_enable_regmap,
	158	.disable = regulator_disable_regmap,
	159	.is_enabled = regulator_is_enabled_regmap,
	160	};
	161
1b82b4e4 BB	162	static struct regulator_ops axp20x_ops_sw = {
	163	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	164	.list_voltage = regulator_list_voltage_linear,
	165	.enable = regulator_enable_regmap,
	166	.disable = regulator_disable_regmap,
	167	.is_enabled = regulator_is_enabled_regmap,
	168	};
	169
dfe7a1b0	170	static const struct regulator_desc axp20x_regulators[] = {
866bd951 BB	171	AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
	172	AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
	173	AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
	174	AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
	175	AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
	176	AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
	177	AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
	178	AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
	179	AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
	180	AXP_DESC_TABLE(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_data,
	181	AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL, 0x08),
	182	AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
	183	AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
	184	AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
dfe7a1b0 CC	185	};
dfe7a1b0 CC	186
1b82b4e4 BB	187	static const struct regulator_desc axp22x_regulators[] = {
	188	AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
	189	AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	190	AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
	191	AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	192	AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
	193	AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	194	AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
6b3600b4	195	AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
1b82b4e4	196	AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
6b3600b4	197	AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
1b82b4e4 BB	198	/* secondary switchable output of DCDC1 */
	199	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", "dcdc1", 1600, 3400, 100,
	200	AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(7)),
	201	/* LDO regulator internally chained to DCDC5 */
	202	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", "dcdc5", 700, 1400, 100,
	203	AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	204	AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
	205	AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	206	AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
	207	AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	208	AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
	209	AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
	210	AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
	211	AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
	212	AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
	213	AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	214	AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
	215	AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	216	AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
	217	AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
	218	AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
	219	AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	220	AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
	221	AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	222	AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
	223	AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
	224	AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 1800, 3300, 100,
	225	AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
	226	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	227	AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 1800, 3300, 100,
	228	AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
	229	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	230	AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
	231	};
	232
dfe7a1b0 CC	233	static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
	234	{
	235	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
866bd951 BB	236	u32 min, max, def, step;
	237
	238	switch (axp20x->variant) {
	239	case AXP202_ID:
	240	case AXP209_ID:
	241	min = 750;
	242	max = 1875;
	243	def = 1500;
	244	step = 75;
	245	break;
1b82b4e4 BB	246	case AXP221_ID:
	247	min = 1800;
	248	max = 4050;
	249	def = 3000;
	250	step = 150;
	251	break;
866bd951 BB	252	default:
	253	dev_err(&pdev->dev,
	254	"Setting DCDC frequency for unsupported AXP variant\n");
	255	return -EINVAL;
	256	}
	257
	258	if (dcdcfreq == 0)
	259	dcdcfreq = def;
dfe7a1b0	260
866bd951 BB	261	if (dcdcfreq < min) {
	262	dcdcfreq = min;
	263	dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
	264	min);
dfe7a1b0 CC	265	}
dfe7a1b0 CC	266
866bd951 BB	267	if (dcdcfreq > max) {
	268	dcdcfreq = max;
	269	dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
	270	max);
dfe7a1b0 CC	271	}
dfe7a1b0 CC	272
866bd951	273	dcdcfreq = (dcdcfreq - min) / step;
dfe7a1b0 CC	274
	275	return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
	276	AXP20X_FREQ_DCDC_MASK, dcdcfreq);
	277	}
	278
	279	static int axp20x_regulator_parse_dt(struct platform_device *pdev)
	280	{
	281	struct device_node np, regulators;
	282	int ret;
866bd951	283	u32 dcdcfreq = 0;
dfe7a1b0 CC	284
	285	np = of_node_get(pdev->dev.parent->of_node);
	286	if (!np)
	287	return 0;
	288
a6016c52	289	regulators = of_get_child_by_name(np, "regulators");
dfe7a1b0 CC	290	if (!regulators) {
	291	dev_warn(&pdev->dev, "regulators node not found\n");
	292	} else {
dfe7a1b0 CC	293	of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
	294	ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
	295	if (ret < 0) {
	296	dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
	297	return ret;
	298	}
	299
	300	of_node_put(regulators);
	301	}
	302
	303	return 0;
	304	}
	305
	306	static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
	307	{
866bd951 BB	308	struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
866bd951 BB	309	unsigned int mask;
dfe7a1b0	310
866bd951 BB	311	switch (axp20x->variant) {
	312	case AXP202_ID:
	313	case AXP209_ID:
	314	if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
	315	return -EINVAL;
	316
	317	mask = AXP20X_WORKMODE_DCDC2_MASK;
	318	if (id == AXP20X_DCDC3)
	319	mask = AXP20X_WORKMODE_DCDC3_MASK;
dfe7a1b0	320
866bd951 BB	321	workmode <<= ffs(mask) - 1;
866bd951 BB	322	break;
dfe7a1b0	323
1b82b4e4 BB	324	case AXP221_ID:
	325	if (id < AXP22X_DCDC1 \|\| id > AXP22X_DCDC5)
	326	return -EINVAL;
	327
	328	mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
	329	workmode <<= id - AXP22X_DCDC1;
	330	break;
	331
866bd951 BB	332	default:
	333	/* should not happen */
	334	WARN_ON(1);
	335	return -EINVAL;
	336	}
dfe7a1b0 CC	337
	338	return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
	339	}
	340
	341	static int axp20x_regulator_probe(struct platform_device *pdev)
	342	{
	343	struct regulator_dev *rdev;
	344	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
866bd951	345	const struct regulator_desc *regulators;
765e8023 CYT	346	struct regulator_config config = {
	347	.dev = pdev->dev.parent,
	348	.regmap = axp20x->regmap,
866bd951	349	.driver_data = axp20x,
765e8023	350	};
866bd951	351	int ret, i, nregulators;
dfe7a1b0 CC	352	u32 workmode;
dfe7a1b0 CC	353
866bd951 BB	354	switch (axp20x->variant) {
	355	case AXP202_ID:
	356	case AXP209_ID:
	357	regulators = axp20x_regulators;
	358	nregulators = AXP20X_REG_ID_MAX;
	359	break;
1b82b4e4 BB	360	case AXP221_ID:
	361	regulators = axp22x_regulators;
	362	nregulators = AXP22X_REG_ID_MAX;
	363	break;
866bd951 BB	364	default:
	365	dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
	366	axp20x->variant);
	367	return -EINVAL;
	368	}
	369
765e8023 CYT	370	/* This only sets the dcdc freq. Ignore any errors */
765e8023 CYT	371	axp20x_regulator_parse_dt(pdev);
dfe7a1b0	372
866bd951 BB	373	for (i = 0; i < nregulators; i++) {
866bd951 BB	374	rdev = devm_regulator_register(&pdev->dev, &regulators[i],
dfe7a1b0 CC	375	&config);
	376	if (IS_ERR(rdev)) {
	377	dev_err(&pdev->dev, "Failed to register %s\n",
866bd951	378	regulators[i].name);
dfe7a1b0 CC	379
	380	return PTR_ERR(rdev);
	381	}
	382
765e8023 CYT	383	ret = of_property_read_u32(rdev->dev.of_node,
765e8023 CYT	384	"x-powers,dcdc-workmode",
dfe7a1b0 CC	385	&workmode);
	386	if (!ret) {
	387	if (axp20x_set_dcdc_workmode(rdev, i, workmode))
	388	dev_err(&pdev->dev, "Failed to set workmode on %s\n",
866bd951	389	rdev->desc->name);
dfe7a1b0 CC	390	}
	391	}
	392
	393	return 0;
	394	}
	395
	396	static struct platform_driver axp20x_regulator_driver = {
	397	.probe = axp20x_regulator_probe,
	398	.driver = {
	399	.name = "axp20x-regulator",
dfe7a1b0 CC	400	},
	401	};
	402
	403	module_platform_driver(axp20x_regulator_driver);
	404
	405	MODULE_LICENSE("GPL v2");
	406	MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
	407	MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
d4ea7d86	408	MODULE_ALIAS("platform:axp20x-regulator");