[mirror_ubuntu-artful-kernel.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/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/gpio.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;
};

static int arizona_ldo1_hc_list_voltage(struct regulator_dev *rdev,
					unsigned int selector)
{
	if (selector >= rdev->desc->n_voltages)
		return -EINVAL;

	if (selector == rdev->desc->n_voltages - 1)
		return 1800000;
	else
		return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
}

static int arizona_ldo1_hc_map_voltage(struct regulator_dev *rdev,
				       int min_uV, int max_uV)
{
	int sel;

	sel = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
	if (sel >= rdev->desc->n_voltages)
		sel = rdev->desc->n_voltages - 1;

	return sel;
}

static int arizona_ldo1_hc_set_voltage_sel(struct regulator_dev *rdev,
					   unsigned sel)
{
	struct arizona_ldo1 *ldo = rdev_get_drvdata(rdev);
	struct regmap *regmap = ldo->regmap;
	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;

	val = sel << ARIZONA_LDO1_VSEL_SHIFT;

	return regmap_update_bits(regmap, ARIZONA_LDO1_CONTROL_1,
				  ARIZONA_LDO1_VSEL_MASK, val);
}

static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
{
	struct arizona_ldo1 *ldo = rdev_get_drvdata(rdev);
	struct regmap *regmap = ldo->regmap;
	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;

	ret = regmap_read(regmap, ARIZONA_LDO1_CONTROL_1, &val);
	if (ret != 0)
		return ret;

	return (val & ARIZONA_LDO1_VSEL_MASK) >> ARIZONA_LDO1_VSEL_SHIFT;
}

static const struct regulator_ops arizona_ldo1_hc_ops = {
	.list_voltage = arizona_ldo1_hc_list_voltage,
	.map_voltage = arizona_ldo1_hc_map_voltage,
	.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_desc arizona_ldo1_hc = {
	.name = "LDO1",
	.supply_name = "LDOVDD",
	.type = REGULATOR_VOLTAGE,
	.ops = &arizona_ldo1_hc_ops,

	.bypass_reg = ARIZONA_LDO1_CONTROL_1,
	.bypass_mask = ARIZONA_LDO1_BYPASS,
	.min_uV = 900000,
	.uV_step = 50000,
	.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;

	pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
	if (pdata->ldoena < 0) {
		dev_warn(config->dev,
			 "LDOENA GPIO property missing/malformed: %d\n",
			 pdata->ldoena);
		pdata->ldoena = 0;
	} else {
		config->ena_gpio_initialized = true;
	}

	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;
		}
	}

	config.ena_gpio = pdata->ldoena;

	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 struct platform_driver arizona_ldo1_driver = {
	.probe = arizona_ldo1_probe,
	.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>
ce938001	20	#include <linux/of_gpio.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/gpio.h>
	26	#include <linux/slab.h>
	27
aaa84e6a RF	28	#include <linux/regulator/arizona-ldo1.h>
aaa84e6a RF	29
1910efa1 MB	30	#include <linux/mfd/arizona/core.h>
	31	#include <linux/mfd/arizona/pdata.h>
	32	#include <linux/mfd/arizona/registers.h>
	33
	34	struct arizona_ldo1 {
	35	struct regulator_dev *regulator;
80a55f41	36	struct regmap *regmap;
1910efa1 MB	37
	38	struct regulator_consumer_supply supply;
	39	struct regulator_init_data init_data;
	40	};
	41
73ee2946 MB	42	static int arizona_ldo1_hc_list_voltage(struct regulator_dev *rdev,
	43	unsigned int selector)
	44	{
	45	if (selector >= rdev->desc->n_voltages)
	46	return -EINVAL;
	47
	48	if (selector == rdev->desc->n_voltages - 1)
	49	return 1800000;
	50	else
	51	return rdev->desc->min_uV + (rdev->desc->uV_step * selector);
	52	}
	53
	54	static int arizona_ldo1_hc_map_voltage(struct regulator_dev *rdev,
	55	int min_uV, int max_uV)
	56	{
	57	int sel;
	58
	59	sel = DIV_ROUND_UP(min_uV - rdev->desc->min_uV, rdev->desc->uV_step);
	60	if (sel >= rdev->desc->n_voltages)
	61	sel = rdev->desc->n_voltages - 1;
	62
	63	return sel;
	64	}
	65
	66	static int arizona_ldo1_hc_set_voltage_sel(struct regulator_dev *rdev,
	67	unsigned sel)
	68	{
	69	struct arizona_ldo1 *ldo = rdev_get_drvdata(rdev);
80a55f41	70	struct regmap *regmap = ldo->regmap;
73ee2946 MB	71	unsigned int val;
	72	int ret;
	73
	74	if (sel == rdev->desc->n_voltages - 1)
	75	val = ARIZONA_LDO1_HI_PWR;
	76	else
	77	val = 0;
	78
	79	ret = regmap_update_bits(regmap, ARIZONA_LDO1_CONTROL_2,
	80	ARIZONA_LDO1_HI_PWR, val);
	81	if (ret != 0)
	82	return ret;
	83
73ee2946 MB	84	if (val)
	85	return 0;
	86
	87	val = sel << ARIZONA_LDO1_VSEL_SHIFT;
	88
	89	return regmap_update_bits(regmap, ARIZONA_LDO1_CONTROL_1,
	90	ARIZONA_LDO1_VSEL_MASK, val);
	91	}
	92
	93	static int arizona_ldo1_hc_get_voltage_sel(struct regulator_dev *rdev)
	94	{
	95	struct arizona_ldo1 *ldo = rdev_get_drvdata(rdev);
80a55f41	96	struct regmap *regmap = ldo->regmap;
73ee2946 MB	97	unsigned int val;
	98	int ret;
	99
	100	ret = regmap_read(regmap, ARIZONA_LDO1_CONTROL_2, &val);
	101	if (ret != 0)
	102	return ret;
	103
	104	if (val & ARIZONA_LDO1_HI_PWR)
	105	return rdev->desc->n_voltages - 1;
	106
	107	ret = regmap_read(regmap, ARIZONA_LDO1_CONTROL_1, &val);
	108	if (ret != 0)
	109	return ret;
	110
	111	return (val & ARIZONA_LDO1_VSEL_MASK) >> ARIZONA_LDO1_VSEL_SHIFT;
	112	}
	113
03d06107	114	static const struct regulator_ops arizona_ldo1_hc_ops = {
73ee2946 MB	115	.list_voltage = arizona_ldo1_hc_list_voltage,
	116	.map_voltage = arizona_ldo1_hc_map_voltage,
	117	.get_voltage_sel = arizona_ldo1_hc_get_voltage_sel,
	118	.set_voltage_sel = arizona_ldo1_hc_set_voltage_sel,
	119	.get_bypass = regulator_get_bypass_regmap,
	120	.set_bypass = regulator_set_bypass_regmap,
	121	};
	122
	123	static const struct regulator_desc arizona_ldo1_hc = {
	124	.name = "LDO1",
	125	.supply_name = "LDOVDD",
	126	.type = REGULATOR_VOLTAGE,
	127	.ops = &arizona_ldo1_hc_ops,
	128
	129	.bypass_reg = ARIZONA_LDO1_CONTROL_1,
	130	.bypass_mask = ARIZONA_LDO1_BYPASS,
	131	.min_uV = 900000,
	132	.uV_step = 50000,
	133	.n_voltages = 8,
ce1bcb7e	134	.enable_time = 1500,
88f0e3a5	135	.ramp_delay = 24000,
73ee2946 MB	136
	137	.owner = THIS_MODULE,
	138	};
	139
03d06107	140	static const struct regulator_ops arizona_ldo1_ops = {
1910efa1 MB	141	.list_voltage = regulator_list_voltage_linear,
	142	.map_voltage = regulator_map_voltage_linear,
	143	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	144	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	145	};
	146
	147	static const struct regulator_desc arizona_ldo1 = {
	148	.name = "LDO1",
	149	.supply_name = "LDOVDD",
	150	.type = REGULATOR_VOLTAGE,
	151	.ops = &arizona_ldo1_ops,
	152
	153	.vsel_reg = ARIZONA_LDO1_CONTROL_1,
	154	.vsel_mask = ARIZONA_LDO1_VSEL_MASK,
	155	.min_uV = 900000,
a35ff286 CK	156	.uV_step = 25000,
a35ff286 CK	157	.n_voltages = 13,
86a14501	158	.enable_time = 500,
88f0e3a5	159	.ramp_delay = 24000,
1910efa1 MB	160
	161	.owner = THIS_MODULE,
	162	};
	163
55a18aef MB	164	static const struct regulator_init_data arizona_ldo1_dvfs = {
	165	.constraints = {
	166	.min_uV = 1200000,
	167	.max_uV = 1800000,
	168	.valid_ops_mask = REGULATOR_CHANGE_STATUS \|
	169	REGULATOR_CHANGE_VOLTAGE,
	170	},
	171	.num_consumer_supplies = 1,
	172	};
	173
1910efa1	174	static const struct regulator_init_data arizona_ldo1_default = {
a9905b1d MB	175	.constraints = {
	176	.valid_ops_mask = REGULATOR_CHANGE_STATUS,
	177	},
1910efa1 MB	178	.num_consumer_supplies = 1,
	179	};
	180
9a6c2feb CK	181	static const struct regulator_init_data arizona_ldo1_wm5110 = {
	182	.constraints = {
	183	.min_uV = 1175000,
	184	.max_uV = 1200000,
	185	.valid_ops_mask = REGULATOR_CHANGE_STATUS \|
	186	REGULATOR_CHANGE_VOLTAGE,
	187	},
	188	.num_consumer_supplies = 1,
	189	};
	190
aaa84e6a	191	static int arizona_ldo1_of_get_pdata(struct arizona_ldo1_pdata *pdata,
072e78b1	192	struct regulator_config *config,
aaa84e6a RF	193	const struct regulator_desc *desc,
aaa84e6a RF	194	bool *external_dcvdd)
4a8c475f	195	{
2cce4be9	196	struct arizona_ldo1 *ldo1 = config->driver_data;
aaa84e6a	197	struct device_node *np = config->dev->of_node;
2cce4be9 CK	198	struct device_node init_node, dcvdd_node;
2cce4be9 CK	199	struct regulator_init_data *init_data;
4a8c475f	200
ce938001 CK	201	pdata->ldoena = of_get_named_gpio(np, "wlf,ldoena", 0);
ce938001 CK	202	if (pdata->ldoena < 0) {
aaa84e6a	203	dev_warn(config->dev,
ce938001 CK	204	"LDOENA GPIO property missing/malformed: %d\n",
	205	pdata->ldoena);
	206	pdata->ldoena = 0;
	207	} else {
	208	config->ena_gpio_initialized = true;
	209	}
4a8c475f	210
ce938001 CK	211	init_node = of_get_child_by_name(np, "ldo1");
ce938001 CK	212	dcvdd_node = of_parse_phandle(np, "DCVDD-supply", 0);
2cce4be9 CK	213
	214	if (init_node) {
	215	config->of_node = init_node;
	216
aaa84e6a RF	217	init_data = of_get_regulator_init_data(config->dev, init_node,
aaa84e6a RF	218	desc);
2cce4be9 CK	219	if (init_data) {
	220	init_data->consumer_supplies = &ldo1->supply;
	221	init_data->num_consumer_supplies = 1;
	222
	223	if (dcvdd_node && dcvdd_node != init_node)
aaa84e6a	224	*external_dcvdd = true;
2cce4be9	225
aaa84e6a	226	pdata->init_data = init_data;
2cce4be9 CK	227	}
2cce4be9 CK	228	} else if (dcvdd_node) {
aaa84e6a	229	*external_dcvdd = true;
2cce4be9 CK	230	}
	231
	232	of_node_put(dcvdd_node);
	233
4a8c475f CK	234	return 0;
	235	}
	236
af367afa RF	237	static int arizona_ldo1_common_init(struct platform_device *pdev,
	238	struct arizona_ldo1 *ldo1,
	239	const struct regulator_desc *desc,
	240	struct arizona_ldo1_pdata *pdata,
	241	bool *external_dcvdd)
1910efa1	242	{
af367afa	243	struct device *parent_dev = pdev->dev.parent;
1910efa1	244	struct regulator_config config = { };
1910efa1 MB	245	int ret;
1910efa1 MB	246
af367afa	247	*external_dcvdd = false;
55a18aef	248
1910efa1	249	ldo1->supply.supply = "DCVDD";
af367afa RF	250	ldo1->init_data.consumer_supplies = &ldo1->supply;
af367afa RF	251	ldo1->supply.dev_name = dev_name(parent_dev);
1910efa1	252
af367afa	253	config.dev = parent_dev;
1910efa1	254	config.driver_data = ldo1;
af367afa	255	config.regmap = ldo1->regmap;
4a8c475f CK	256
4a8c475f CK	257	if (IS_ENABLED(CONFIG_OF)) {
af367afa RF	258	if (!dev_get_platdata(parent_dev)) {
af367afa RF	259	ret = arizona_ldo1_of_get_pdata(pdata,
aaa84e6a	260	&config, desc,
af367afa	261	external_dcvdd);
4a8c475f CK	262	if (ret < 0)
	263	return ret;
	264	}
	265	}
	266
af367afa	267	config.ena_gpio = pdata->ldoena;
1910efa1	268
af367afa RF	269	if (pdata->init_data)
af367afa RF	270	config.init_data = pdata->init_data;
1910efa1 MB	271	else
	272	config.init_data = &ldo1->init_data;
	273
4a8c475f CK	274	/*
	275	* LDO1 can only be used to supply DCVDD so if it has no
	276	* consumers then DCVDD is supplied externally.
	277	*/
	278	if (config.init_data->num_consumer_supplies == 0)
af367afa	279	*external_dcvdd = true;
4a8c475f	280
14ffa888	281	ldo1->regulator = devm_regulator_register(&pdev->dev, desc, &config);
ec454d70 CK	282
	283	of_node_put(config.of_node);
	284
1910efa1 MB	285	if (IS_ERR(ldo1->regulator)) {
1910efa1 MB	286	ret = PTR_ERR(ldo1->regulator);
af367afa	287	dev_err(&pdev->dev, "Failed to register LDO1 supply: %d\n",
1910efa1 MB	288	ret);
	289	return ret;
	290	}
	291
	292	platform_set_drvdata(pdev, ldo1);
	293
	294	return 0;
	295	}
	296
af367afa RF	297	static int arizona_ldo1_probe(struct platform_device *pdev)
	298	{
	299	struct arizona *arizona = dev_get_drvdata(pdev->dev.parent);
	300	struct arizona_ldo1 *ldo1;
	301	const struct regulator_desc *desc;
	302	bool external_dcvdd;
	303	int ret;
	304
	305	ldo1 = devm_kzalloc(&pdev->dev, sizeof(*ldo1), GFP_KERNEL);
	306	if (!ldo1)
	307	return -ENOMEM;
	308
	309	ldo1->regmap = arizona->regmap;
	310
	311	/*
	312	* Since the chip usually supplies itself we provide some
	313	* default init_data for it. This will be overridden with
	314	* platform data if provided.
	315	*/
	316	switch (arizona->type) {
	317	case WM5102:
	318	case WM8997:
	319	case WM8998:
	320	case WM1814:
	321	desc = &arizona_ldo1_hc;
	322	ldo1->init_data = arizona_ldo1_dvfs;
	323	break;
	324	case WM5110:
	325	case WM8280:
	326	desc = &arizona_ldo1;
	327	ldo1->init_data = arizona_ldo1_wm5110;
	328	break;
	329	default:
	330	desc = &arizona_ldo1;
	331	ldo1->init_data = arizona_ldo1_default;
	332	break;
	333	}
	334
	335	ret = arizona_ldo1_common_init(pdev, ldo1, desc,
	336	&arizona->pdata.ldo1,
	337	&external_dcvdd);
	338	if (ret == 0)
	339	arizona->external_dcvdd = external_dcvdd;
	340
	341	return ret;
	342	}
	343
1910efa1 MB	344	static struct platform_driver arizona_ldo1_driver = {
1910efa1 MB	345	.probe = arizona_ldo1_probe,
1910efa1 MB	346	.driver = {
1910efa1 MB	347	.name = "arizona-ldo1",
1910efa1 MB	348	},
	349	};
	350
	351	module_platform_driver(arizona_ldo1_driver);
	352
	353	/* Module information */
	354	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	355	MODULE_DESCRIPTION("Arizona LDO1 driver");
	356	MODULE_LICENSE("GPL");
	357	MODULE_ALIAS("platform:arizona-ldo1");