[linux-2.6-block.git] / drivers / regulator / arizona-ldo1.c

/*
 * arizona-ldo1.c  --  LDO1 supply for Arizona devices
 *
 * Copyright 2012 Wolfson Microelectronics PLC.
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/gpio/consumer.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>

#include <linux/regulator/arizona-ldo1.h>

#include <linux/mfd/arizona/core.h>
#include <linux/mfd/arizona/pdata.h>
#include <linux/mfd/arizona/registers.h>

struct arizona_ldo1 {
	struct regulator_dev *regulator;
	struct regmap *regmap;

	struct regulator_consumer_supply supply;
	struct regulator_init_data init_data;

	struct gpio_desc *ena_gpiod;
};

static int arizona_ldo1_hc_set_voltage_sel(struct regulator_dev *rdev,
					   unsigned sel)
{
	struct regmap *regmap = rdev_get_regmap(rdev);
	unsigned int val;
	int ret;

	if (sel == rdev->desc->n_voltages - 1)
		val = ARIZONA_LDO1_HI_PWR;
	else
		val = 0;

	ret = regmap_update_bits(regmap, ARIZONA_LDO1_CONTROL_2,
				 ARIZONA_LDO1_HI_PWR, val);
	if (ret != 0)
		return ret;

	if (val)
		return 0;

	return regulator_set_voltage_sel_regmap(rdev, sel);
}

static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
{
	struct regmap *regmap = rdev_get_regmap(rdev);
	unsigned int val;
	int ret;

	ret = regmap_read(regmap, ARIZONA_LDO1_CONTROL_2, &val);
	if (ret != 0)
		return ret;

	if (val & ARIZONA_LDO1_HI_PWR)
		return rdev->desc->n_voltages - 1;

	return regulator_get_voltage_sel_regmap(rdev);
}

static const struct regulator_ops arizona_ldo1_hc_ops = {
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	.get_voltage_sel = arizona_ldo1_hc_get_voltage_sel,
	.set_voltage_sel = arizona_ldo1_hc_set_voltage_sel,
	.get_bypass = regulator_get_bypass_regmap,
	.set_bypass = regulator_set_bypass_regmap,
};

static const struct regulator_linear_range arizona_ldo1_hc_ranges[] = {
	REGULATOR_LINEAR_RANGE(900000, 0, 0x6, 50000),
	REGULATOR_LINEAR_RANGE(1800000, 0x7, 0x7, 0),
};

static const struct regulator_desc arizona_ldo1_hc = {
	.name = "LDO1",
	.supply_name = "LDOVDD",
	.type = REGULATOR_VOLTAGE,
	.ops = &arizona_ldo1_hc_ops,

	.vsel_reg = ARIZONA_LDO1_CONTROL_1,
	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,
	.bypass_reg = ARIZONA_LDO1_CONTROL_1,
	.bypass_mask = ARIZONA_LDO1_BYPASS,
	.linear_ranges = arizona_ldo1_hc_ranges,
	.n_linear_ranges = ARRAY_SIZE(arizona_ldo1_hc_ranges),
	.n_voltages = 8,
	.enable_time = 1500,
	.ramp_delay = 24000,

	.owner = THIS_MODULE,
};

static const struct regulator_ops arizona_ldo1_ops = {
	.list_voltage = regulator_list_voltage_linear,
	.map_voltage = regulator_map_voltage_linear,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
};

static const struct regulator_desc arizona_ldo1 = {
	.name = "LDO1",
	.supply_name = "LDOVDD",
	.type = REGULATOR_VOLTAGE,
	.ops = &arizona_ldo1_ops,

	.vsel_reg = ARIZONA_LDO1_CONTROL_1,
	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,
	.min_uV = 900000,
	.uV_step = 25000,
	.n_voltages = 13,
	.enable_time = 500,
	.ramp_delay = 24000,

	.owner = THIS_MODULE,
};

static const struct regulator_init_data arizona_ldo1_dvfs = {
	.constraints = {
		.min_uV = 1200000,
		.max_uV = 1800000,
		.valid_ops_mask = REGULATOR_CHANGE_STATUS |
				  REGULATOR_CHANGE_VOLTAGE,
	},
	.num_consumer_supplies = 1,
};

static const struct regulator_init_data arizona_ldo1_default = {
	.constraints = {
		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	},
	.num_consumer_supplies = 1,
};

static const struct regulator_init_data arizona_ldo1_wm5110 = {
	.constraints = {
		.min_uV = 1175000,
		.max_uV = 1200000,
		.valid_ops_mask = REGULATOR_CHANGE_STATUS |
				  REGULATOR_CHANGE_VOLTAGE,
	},
	.num_consumer_supplies = 1,
};

static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
				     struct regulator_config *config,
				     const struct regulator_desc *desc,
				     bool *external_dcvdd)
{
	struct arizona_ldo1 *ldo1 = config->driver_data;
	struct device_node *np = config->dev->of_node;
	struct device_node *init_node, *dcvdd_node;
	struct regulator_init_data *init_data;

	init_node = of_get_child_by_name(np, "ldo1");
	dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);

	if (init_node) {
		config->of_node = init_node;

		init_data = of_get_regulator_init_data(config->dev, init_node,
						       desc);
		if (init_data) {
			init_data->consumer_supplies = &ldo1->supply;
			init_data->num_consumer_supplies = 1;

			if (dcvdd_node && dcvdd_node != init_node)
				*external_dcvdd = true;

			pdata->init_data = init_data;
		}
	} else if (dcvdd_node) {
		*external_dcvdd = true;
	}

	of_node_put(dcvdd_node);

	return 0;
}

static int arizona_ldo1_common_init(struct platform_device *pdev,
				    struct arizona_ldo1 *ldo1,
				    const struct regulator_desc *desc,
				    struct arizona_ldo1_pdata *pdata,
				    bool *external_dcvdd)
{
	struct device *parent_dev = pdev->dev.parent;
	struct regulator_config config = { };
	int ret;

	*external_dcvdd = false;

	ldo1->supply.supply = "DCVDD";
	ldo1->init_data.consumer_supplies = &ldo1->supply;
	ldo1->supply.dev_name = dev_name(parent_dev);

	config.dev = parent_dev;
	config.driver_data = ldo1;
	config.regmap = ldo1->regmap;

	if (IS_ENABLED(CONFIG_OF)) {
		if (!dev_get_platdata(parent_dev)) {
			ret = arizona_ldo1_of_get_pdata(pdata,
							&config, desc,
							external_dcvdd);
			if (ret < 0)
				return ret;
		}
	}

	/* We assume that high output = regulator off
	 * Don't use devm, since we need to get against the parent device
	 * so clean up would happen at the wrong time
	 */
	config.ena_gpiod = gpiod_get_optional(parent_dev, "wlf,ldoena",
				GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE);
	if (IS_ERR(config.ena_gpiod))
		return PTR_ERR(config.ena_gpiod);

	ldo1->ena_gpiod = config.ena_gpiod;

	if (pdata->init_data)
		config.init_data = pdata->init_data;
	else
		config.init_data = &ldo1->init_data;

	/*
	 * LDO1 can only be used to supply DCVDD so if it has no
	 * consumers then DCVDD is supplied externally.
	 */
	if (config.init_data->num_consumer_supplies == 0)
		*external_dcvdd = true;

	ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);

	of_node_put(config.of_node);

	if (IS_ERR(ldo1->regulator)) {
		ret = PTR_ERR(ldo1->regulator);
		dev_err(&pdev->dev, "Failed to register LDO1 supply: %d\n",
			ret);
		return ret;
	}

	platform_set_drvdata(pdev, ldo1);

	return 0;
}

static int arizona_ldo1_probe(struct platform_device *pdev)
{
	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
	struct arizona_ldo1 *ldo1;
	const struct regulator_desc *desc;
	bool external_dcvdd;
	int ret;

	ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
	if (!ldo1)
		return -ENOMEM;

	ldo1->regmap = arizona->regmap;

	/*
	 * Since the chip usually supplies itself we provide some
	 * default init_data for it.  This will be overridden with
	 * platform data if provided.
	 */
	switch (arizona->type) {
	case WM5102:
	case WM8997:
	case WM8998:
	case WM1814:
		desc = &arizona_ldo1_hc;
		ldo1->init_data = arizona_ldo1_dvfs;
		break;
	case WM5110:
	case WM8280:
		desc = &arizona_ldo1;
		ldo1->init_data = arizona_ldo1_wm5110;
		break;
	default:
		desc = &arizona_ldo1;
		ldo1->init_data = arizona_ldo1_default;
		break;
	}

	ret = arizona_ldo1_common_init(pdev, ldo1, desc,
				       &arizona->pdata.ldo1,
				       &external_dcvdd);
	if (ret == 0)
		arizona->external_dcvdd = external_dcvdd;

	return ret;
}

static int arizona_ldo1_remove(struct platform_device *pdev)
{
	struct arizona_ldo1 *ldo1 = platform_get_drvdata(pdev);

	if (ldo1->ena_gpiod)
		gpiod_put(ldo1->ena_gpiod);

	return 0;
}

static struct platform_driver arizona_ldo1_driver = {
	.probe = arizona_ldo1_probe,
	.remove = arizona_ldo1_remove,
	.driver		= {
		.name	= "arizona-ldo1",
	},
};

module_platform_driver(arizona_ldo1_driver);

/* Module information */
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("Arizona LDO1 driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:arizona-ldo1");
Commit	Line	Data
1910efa1 MB	1	/*
	2	* arizona-ldo1.c -- LDO1 supply for Arizona devices
	3	*
	4	* Copyright 2012 Wolfson Microelectronics PLC.
	5	*
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/init.h>
	17	#include <linux/bitops.h>
	18	#include <linux/err.h>
7b22b9a5	19	#include <linux/of.h>
e1739e86	20	#include <linux/gpio/consumer.h>
1910efa1 MB	21	#include <linux/platform_device.h>
	22	#include <linux/regulator/driver.h>
	23	#include <linux/regulator/machine.h>
2cce4be9	24	#include <linux/regulator/of_regulator.h>
1910efa1 MB	25	#include <linux/slab.h>
1910efa1 MB	26
aaa84e6a RF	27	#include <linux/regulator/arizona-ldo1.h>
aaa84e6a RF	28
1910efa1 MB	29	#include <linux/mfd/arizona/core.h>
	30	#include <linux/mfd/arizona/pdata.h>
	31	#include <linux/mfd/arizona/registers.h>
	32
	33	struct arizona_ldo1 {
	34	struct regulator_dev *regulator;
80a55f41	35	struct regmap *regmap;
1910efa1 MB	36
	37	struct regulator_consumer_supply supply;
	38	struct regulator_init_data init_data;
a9191579 CK	39
a9191579 CK	40	struct gpio_desc *ena_gpiod;
1910efa1 MB	41	};
1910efa1 MB	42
73ee2946 MB	43	static int arizona_ldo1_hc_set_voltage_sel(struct regulator_dev *rdev,
	44	unsigned sel)
	45	{
5db2efbe	46	struct regmap *regmap = rdev_get_regmap(rdev);
73ee2946 MB	47	unsigned int val;
	48	int ret;
	49
	50	if (sel == rdev->desc->n_voltages - 1)
	51	val = ARIZONA_LDO1_HI_PWR;
	52	else
	53	val = 0;
	54
	55	ret = regmap_update_bits(regmap, ARIZONA_LDO1_CONTROL_2,
	56	ARIZONA_LDO1_HI_PWR, val);
	57	if (ret != 0)
	58	return ret;
	59
73ee2946 MB	60	if (val)
	61	return 0;
	62
5db2efbe	63	return regulator_set_voltage_sel_regmap(rdev, sel);
73ee2946 MB	64	}
	65
	66	static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
	67	{
5db2efbe	68	struct regmap *regmap = rdev_get_regmap(rdev);
73ee2946 MB	69	unsigned int val;
	70	int ret;
	71
	72	ret = regmap_read(regmap, ARIZONA_LDO1_CONTROL_2, &val);
	73	if (ret != 0)
	74	return ret;
	75
	76	if (val & ARIZONA_LDO1_HI_PWR)
	77	return rdev->desc->n_voltages - 1;
	78
5db2efbe	79	return regulator_get_voltage_sel_regmap(rdev);
73ee2946 MB	80	}
73ee2946 MB	81
03d06107	82	static const struct regulator_ops arizona_ldo1_hc_ops = {
37b9ef9c AL	83	.list_voltage = regulator_list_voltage_linear_range,
37b9ef9c AL	84	.map_voltage = regulator_map_voltage_linear_range,
73ee2946 MB	85	.get_voltage_sel = arizona_ldo1_hc_get_voltage_sel,
	86	.set_voltage_sel = arizona_ldo1_hc_set_voltage_sel,
	87	.get_bypass = regulator_get_bypass_regmap,
	88	.set_bypass = regulator_set_bypass_regmap,
	89	};
	90
37b9ef9c AL	91	static const struct regulator_linear_range arizona_ldo1_hc_ranges[] = {
	92	REGULATOR_LINEAR_RANGE(900000, 0, 0x6, 50000),
	93	REGULATOR_LINEAR_RANGE(1800000, 0x7, 0x7, 0),
	94	};
	95
73ee2946 MB	96	static const struct regulator_desc arizona_ldo1_hc = {
	97	.name = "LDO1",
	98	.supply_name = "LDOVDD",
	99	.type = REGULATOR_VOLTAGE,
	100	.ops = &arizona_ldo1_hc_ops,
	101
5db2efbe AL	102	.vsel_reg = ARIZONA_LDO1_CONTROL_1,
5db2efbe AL	103	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,
73ee2946 MB	104	.bypass_reg = ARIZONA_LDO1_CONTROL_1,
73ee2946 MB	105	.bypass_mask = ARIZONA_LDO1_BYPASS,
37b9ef9c AL	106	.linear_ranges = arizona_ldo1_hc_ranges,
37b9ef9c AL	107	.n_linear_ranges = ARRAY_SIZE(arizona_ldo1_hc_ranges),
73ee2946	108	.n_voltages = 8,
ce1bcb7e	109	.enable_time = 1500,
88f0e3a5	110	.ramp_delay = 24000,
73ee2946 MB	111
	112	.owner = THIS_MODULE,
	113	};
	114
03d06107	115	static const struct regulator_ops arizona_ldo1_ops = {
1910efa1 MB	116	.list_voltage = regulator_list_voltage_linear,
	117	.map_voltage = regulator_map_voltage_linear,
	118	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	119	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	120	};
	121
	122	static const struct regulator_desc arizona_ldo1 = {
	123	.name = "LDO1",
	124	.supply_name = "LDOVDD",
	125	.type = REGULATOR_VOLTAGE,
	126	.ops = &arizona_ldo1_ops,
	127
	128	.vsel_reg = ARIZONA_LDO1_CONTROL_1,
	129	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,
	130	.min_uV = 900000,
a35ff286 CK	131	.uV_step = 25000,
a35ff286 CK	132	.n_voltages = 13,
86a14501	133	.enable_time = 500,
88f0e3a5	134	.ramp_delay = 24000,
1910efa1 MB	135
	136	.owner = THIS_MODULE,
	137	};
	138
55a18aef MB	139	static const struct regulator_init_data arizona_ldo1_dvfs = {
	140	.constraints = {
	141	.min_uV = 1200000,
	142	.max_uV = 1800000,
	143	.valid_ops_mask = REGULATOR_CHANGE_STATUS \|
	144	REGULATOR_CHANGE_VOLTAGE,
	145	},
	146	.num_consumer_supplies = 1,
	147	};
	148
1910efa1	149	static const struct regulator_init_data arizona_ldo1_default = {
a9905b1d MB	150	.constraints = {
	151	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	152	},
1910efa1 MB	153	.num_consumer_supplies = 1,
	154	};
	155
9a6c2feb CK	156	static const struct regulator_init_data arizona_ldo1_wm5110 = {
	157	.constraints = {
	158	.min_uV = 1175000,
	159	.max_uV = 1200000,
	160	.valid_ops_mask = REGULATOR_CHANGE_STATUS \|
	161	REGULATOR_CHANGE_VOLTAGE,
	162	},
	163	.num_consumer_supplies = 1,
	164	};
	165
aaa84e6a	166	static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
072e78b1	167	struct regulator_config *config,
aaa84e6a RF	168	const struct regulator_desc *desc,
aaa84e6a RF	169	bool *external_dcvdd)
4a8c475f	170	{
2cce4be9	171	struct arizona_ldo1 *ldo1 = config->driver_data;
aaa84e6a	172	struct device_node *np = config->dev->of_node;
2cce4be9 CK	173	struct device_node init_node, dcvdd_node;
2cce4be9 CK	174	struct regulator_init_data *init_data;
4a8c475f	175
ce938001 CK	176	init_node = of_get_child_by_name(np, "ldo1");
ce938001 CK	177	dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
2cce4be9 CK	178
	179	if (init_node) {
	180	config->of_node = init_node;
	181
aaa84e6a RF	182	init_data = of_get_regulator_init_data(config->dev, init_node,
aaa84e6a RF	183	desc);
2cce4be9 CK	184	if (init_data) {
	185	init_data->consumer_supplies = &ldo1->supply;
	186	init_data->num_consumer_supplies = 1;
	187
	188	if (dcvdd_node && dcvdd_node != init_node)
aaa84e6a	189	*external_dcvdd = true;
2cce4be9	190
aaa84e6a	191	pdata->init_data = init_data;
2cce4be9 CK	192	}
2cce4be9 CK	193	} else if (dcvdd_node) {
aaa84e6a	194	*external_dcvdd = true;
2cce4be9 CK	195	}
	196
	197	of_node_put(dcvdd_node);
	198
4a8c475f CK	199	return 0;
	200	}
	201
af367afa RF	202	static int arizona_ldo1_common_init(struct platform_device *pdev,
	203	struct arizona_ldo1 *ldo1,
	204	const struct regulator_desc *desc,
	205	struct arizona_ldo1_pdata *pdata,
	206	bool *external_dcvdd)
1910efa1	207	{
af367afa	208	struct device *parent_dev = pdev->dev.parent;
1910efa1	209	struct regulator_config config = { };
1910efa1 MB	210	int ret;
1910efa1 MB	211
af367afa	212	*external_dcvdd = false;
55a18aef	213
1910efa1	214	ldo1->supply.supply = "DCVDD";
af367afa RF	215	ldo1->init_data.consumer_supplies = &ldo1->supply;
af367afa RF	216	ldo1->supply.dev_name = dev_name(parent_dev);
1910efa1	217
af367afa	218	config.dev = parent_dev;
1910efa1	219	config.driver_data = ldo1;
af367afa	220	config.regmap = ldo1->regmap;
4a8c475f CK	221
4a8c475f CK	222	if (IS_ENABLED(CONFIG_OF)) {
af367afa RF	223	if (!dev_get_platdata(parent_dev)) {
af367afa RF	224	ret = arizona_ldo1_of_get_pdata(pdata,
aaa84e6a	225	&config, desc,
af367afa	226	external_dcvdd);
4a8c475f CK	227	if (ret < 0)
	228	return ret;
	229	}
	230	}
	231
a9191579 CK	232	/* We assume that high output = regulator off
	233	* Don't use devm, since we need to get against the parent device
	234	* so clean up would happen at the wrong time
	235	*/
	236	config.ena_gpiod = gpiod_get_optional(parent_dev, "wlf,ldoena",
63239e4b	237	GPIOD_OUT_LOW \| GPIOD_FLAGS_BIT_NONEXCLUSIVE);
e1739e86 LW	238	if (IS_ERR(config.ena_gpiod))
e1739e86 LW	239	return PTR_ERR(config.ena_gpiod);
1910efa1	240
a9191579 CK	241	ldo1->ena_gpiod = config.ena_gpiod;
a9191579 CK	242
af367afa RF	243	if (pdata->init_data)
af367afa RF	244	config.init_data = pdata->init_data;
1910efa1 MB	245	else
	246	config.init_data = &ldo1->init_data;
	247
4a8c475f CK	248	/*
	249	* LDO1 can only be used to supply DCVDD so if it has no
	250	* consumers then DCVDD is supplied externally.
	251	*/
	252	if (config.init_data->num_consumer_supplies == 0)
af367afa	253	*external_dcvdd = true;
4a8c475f	254
14ffa888	255	ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);
ec454d70 CK	256
	257	of_node_put(config.of_node);
	258
1910efa1 MB	259	if (IS_ERR(ldo1->regulator)) {
1910efa1 MB	260	ret = PTR_ERR(ldo1->regulator);
af367afa	261	dev_err(&pdev->dev, "Failed to register LDO1 supply: %d\n",
1910efa1 MB	262	ret);
	263	return ret;
	264	}
	265
	266	platform_set_drvdata(pdev, ldo1);
	267
	268	return 0;
	269	}
	270
af367afa RF	271	static int arizona_ldo1_probe(struct platform_device *pdev)
	272	{
	273	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
	274	struct arizona_ldo1 *ldo1;
	275	const struct regulator_desc *desc;
	276	bool external_dcvdd;
	277	int ret;
	278
	279	ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
	280	if (!ldo1)
	281	return -ENOMEM;
	282
	283	ldo1->regmap = arizona->regmap;
	284
	285	/*
	286	* Since the chip usually supplies itself we provide some
	287	* default init_data for it. This will be overridden with
	288	* platform data if provided.
	289	*/
	290	switch (arizona->type) {
	291	case WM5102:
	292	case WM8997:
	293	case WM8998:
	294	case WM1814:
	295	desc = &arizona_ldo1_hc;
	296	ldo1->init_data = arizona_ldo1_dvfs;
	297	break;
	298	case WM5110:
	299	case WM8280:
	300	desc = &arizona_ldo1;
	301	ldo1->init_data = arizona_ldo1_wm5110;
	302	break;
	303	default:
	304	desc = &arizona_ldo1;
	305	ldo1->init_data = arizona_ldo1_default;
	306	break;
	307	}
	308
	309	ret = arizona_ldo1_common_init(pdev, ldo1, desc,
	310	&arizona->pdata.ldo1,
	311	&external_dcvdd);
	312	if (ret == 0)
	313	arizona->external_dcvdd = external_dcvdd;
	314
	315	return ret;
	316	}
	317
a9191579 CK	318	static int arizona_ldo1_remove(struct platform_device *pdev)
	319	{
	320	struct arizona_ldo1 *ldo1 = platform_get_drvdata(pdev);
	321
	322	if (ldo1->ena_gpiod)
	323	gpiod_put(ldo1->ena_gpiod);
	324
	325	return 0;
	326	}
	327
1910efa1 MB	328	static struct platform_driver arizona_ldo1_driver = {
1910efa1 MB	329	.probe = arizona_ldo1_probe,
a9191579	330	.remove = arizona_ldo1_remove,
1910efa1 MB	331	.driver = {
1910efa1 MB	332	.name = "arizona-ldo1",
1910efa1 MB	333	},
	334	};
	335
	336	module_platform_driver(arizona_ldo1_driver);
	337
	338	/* Module information */
	339	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	340	MODULE_DESCRIPTION("Arizona LDO1 driver");
	341	MODULE_LICENSE("GPL");
	342	MODULE_ALIAS("platform:arizona-ldo1");