[deliverable/linux.git] / drivers / regulator / tps65090-regulator.c

/*
 * Regulator driver for tps65090 power management chip.
 *
 * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.

 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.

 * This program is distributed in the hope 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.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/mfd/tps65090.h>

struct tps65090_regulator {
	struct device		*dev;
	struct regulator_desc	*desc;
	struct regulator_dev	*rdev;
};

static struct regulator_ops tps65090_ext_control_ops = {
};

static struct regulator_ops tps65090_reg_contol_ops = {
	.enable		= regulator_enable_regmap,
	.disable	= regulator_disable_regmap,
	.is_enabled	= regulator_is_enabled_regmap,
};

static struct regulator_ops tps65090_ldo_ops = {
};

#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops)	\
{							\
	.name = "TPS65090_RAILS"#_id,			\
	.supply_name = _sname,				\
	.id = TPS65090_REGULATOR_##_id,			\
	.ops = &_ops,					\
	.enable_reg = _en_reg,				\
	.enable_mask = BIT(0),				\
	.type = REGULATOR_VOLTAGE,			\
	.owner = THIS_MODULE,				\
}

static struct regulator_desc tps65090_regulator_desc[] = {
	tps65090_REG_DESC(DCDC1, "vsys1",   0x0C, tps65090_reg_contol_ops),
	tps65090_REG_DESC(DCDC2, "vsys2",   0x0D, tps65090_reg_contol_ops),
	tps65090_REG_DESC(DCDC3, "vsys3",   0x0E, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET1,  "infet1",  0x0F, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET2,  "infet2",  0x10, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET3,  "infet3",  0x11, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET4,  "infet4",  0x12, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET5,  "infet5",  0x13, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET6,  "infet6",  0x14, tps65090_reg_contol_ops),
	tps65090_REG_DESC(FET7,  "infet7",  0x15, tps65090_reg_contol_ops),
	tps65090_REG_DESC(LDO1,  "vsys-l1", 0,    tps65090_ldo_ops),
	tps65090_REG_DESC(LDO2,  "vsys-l2", 0,    tps65090_ldo_ops),
};

static inline bool is_dcdc(int id)
{
	switch (id) {
	case TPS65090_REGULATOR_DCDC1:
	case TPS65090_REGULATOR_DCDC2:
	case TPS65090_REGULATOR_DCDC3:
		return true;
	default:
		return false;
	}
}

static int tps65090_config_ext_control(
	struct tps65090_regulator *ri, bool enable)
{
	int ret;
	struct device *parent = ri->dev->parent;
	unsigned int reg_en_reg = ri->desc->enable_reg;

	if (enable)
		ret = tps65090_set_bits(parent, reg_en_reg, 1);
	else
		ret =  tps65090_clr_bits(parent, reg_en_reg, 1);
	if (ret < 0)
		dev_err(ri->dev, "Error in updating reg 0x%x\n", reg_en_reg);
	return ret;
}

static int tps65090_regulator_disable_ext_control(
		struct tps65090_regulator *ri,
		struct tps65090_regulator_plat_data *tps_pdata)
{
	int ret = 0;
	struct device *parent = ri->dev->parent;
	unsigned int reg_en_reg = ri->desc->enable_reg;

	/*
	 * First enable output for internal control if require.
	 * And then disable external control.
	 */
	if (tps_pdata->reg_init_data->constraints.always_on ||
			tps_pdata->reg_init_data->constraints.boot_on) {
		ret =  tps65090_set_bits(parent, reg_en_reg, 0);
		if (ret < 0) {
			dev_err(ri->dev, "Error in set reg 0x%x\n", reg_en_reg);
			return ret;
		}
	}
	return tps65090_config_ext_control(ri, false);
}

static void tps65090_configure_regulator_config(
		struct tps65090_regulator_plat_data *tps_pdata,
		struct regulator_config *config)
{
	if (gpio_is_valid(tps_pdata->gpio)) {
		int gpio_flag = GPIOF_OUT_INIT_LOW;

		if (tps_pdata->reg_init_data->constraints.always_on ||
				tps_pdata->reg_init_data->constraints.boot_on)
			gpio_flag = GPIOF_OUT_INIT_HIGH;

		config->ena_gpio = tps_pdata->gpio;
		config->ena_gpio_flags = gpio_flag;
	}
}

#ifdef CONFIG_OF
static struct of_regulator_match tps65090_matches[] = {
	{ .name = "dcdc1", },
	{ .name = "dcdc2", },
	{ .name = "dcdc3", },
	{ .name = "fet1",  },
	{ .name = "fet2",  },
	{ .name = "fet3",  },
	{ .name = "fet4",  },
	{ .name = "fet5",  },
	{ .name = "fet6",  },
	{ .name = "fet7",  },
	{ .name = "ldo1",  },
	{ .name = "ldo2",  },
};

static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
		struct platform_device *pdev,
		struct of_regulator_match **tps65090_reg_matches)
{
	struct tps65090_platform_data *tps65090_pdata;
	struct device_node *np = pdev->dev.parent->of_node;
	struct device_node *regulators;
	int idx = 0, ret;
	struct tps65090_regulator_plat_data *reg_pdata;

	tps65090_pdata = devm_kzalloc(&pdev->dev, sizeof(*tps65090_pdata),
				GFP_KERNEL);
	if (!tps65090_pdata) {
		dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n");
		return ERR_PTR(-ENOMEM);
	}

	reg_pdata = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX *
				sizeof(*reg_pdata), GFP_KERNEL);
	if (!reg_pdata) {
		dev_err(&pdev->dev, "Memory alloc for reg_pdata failed\n");
		return ERR_PTR(-ENOMEM);
	}

	regulators = of_get_child_by_name(np, "regulators");
	if (!regulators) {
		dev_err(&pdev->dev, "regulator node not found\n");
		return ERR_PTR(-ENODEV);
	}

	ret = of_regulator_match(&pdev->dev, regulators, tps65090_matches,
			ARRAY_SIZE(tps65090_matches));
	of_node_put(regulators);
	if (ret < 0) {
		dev_err(&pdev->dev,
			"Error parsing regulator init data: %d\n", ret);
		return ERR_PTR(ret);
	}

	*tps65090_reg_matches = tps65090_matches;
	for (idx = 0; idx < ARRAY_SIZE(tps65090_matches); idx++) {
		struct regulator_init_data *ri_data;
		struct tps65090_regulator_plat_data *rpdata;

		rpdata = &reg_pdata[idx];
		ri_data = tps65090_matches[idx].init_data;
		if (!ri_data || !tps65090_matches[idx].of_node)
			continue;

		rpdata->reg_init_data = ri_data;
		rpdata->enable_ext_control = of_property_read_bool(
					tps65090_matches[idx].of_node,
					"ti,enable-ext-control");
		if (rpdata->enable_ext_control)
			rpdata->gpio = of_get_named_gpio(np,
					"dcdc-ext-control-gpios", 0);

		tps65090_pdata->reg_pdata[idx] = rpdata;
	}
	return tps65090_pdata;
}
#else
static inline struct tps65090_platform_data *tps65090_parse_dt_reg_data(
			struct platform_device *pdev,
			struct of_regulator_match **tps65090_reg_matches)
{
	*tps65090_reg_matches = NULL;
	return NULL;
}
#endif

static int tps65090_regulator_probe(struct platform_device *pdev)
{
	struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
	struct tps65090_regulator *ri = NULL;
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	struct tps65090_regulator_plat_data *tps_pdata;
	struct tps65090_regulator *pmic;
	struct tps65090_platform_data *tps65090_pdata;
	struct of_regulator_match *tps65090_reg_matches = NULL;
	int num;
	int ret;

	dev_dbg(&pdev->dev, "Probing regulator\n");

	tps65090_pdata = dev_get_platdata(pdev->dev.parent);
	if (!tps65090_pdata && tps65090_mfd->dev->of_node)
		tps65090_pdata = tps65090_parse_dt_reg_data(pdev,
					&tps65090_reg_matches);
	if (IS_ERR_OR_NULL(tps65090_pdata)) {
		dev_err(&pdev->dev, "Platform data missing\n");
		return tps65090_pdata ? PTR_ERR(tps65090_pdata) : -EINVAL;
	}

	pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic),
			GFP_KERNEL);
	if (!pmic) {
		dev_err(&pdev->dev, "mem alloc for pmic failed\n");
		return -ENOMEM;
	}

	for (num = 0; num < TPS65090_REGULATOR_MAX; num++) {
		tps_pdata = tps65090_pdata->reg_pdata[num];

		ri = &pmic[num];
		ri->dev = &pdev->dev;
		ri->desc = &tps65090_regulator_desc[num];

		/*
		 * TPS5090 DCDC support the control from external digital input.
		 * Configure it as per platform data.
		 */
		if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) {
			if (tps_pdata->enable_ext_control) {
				tps65090_configure_regulator_config(
						tps_pdata, &config);
				ri->desc->ops = &tps65090_ext_control_ops;
			} else {
				ret = tps65090_regulator_disable_ext_control(
						ri, tps_pdata);
				if (ret < 0) {
					dev_err(&pdev->dev,
						"failed disable ext control\n");
					return ret;
				}
			}
		}

		config.dev = pdev->dev.parent;
		config.driver_data = ri;
		config.regmap = tps65090_mfd->rmap;
		if (tps_pdata)
			config.init_data = tps_pdata->reg_init_data;
		else
			config.init_data = NULL;
		if (tps65090_reg_matches)
			config.of_node = tps65090_reg_matches[num].of_node;
		else
			config.of_node = NULL;

		rdev = devm_regulator_register(&pdev->dev, ri->desc, &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "failed to register regulator %s\n",
				ri->desc->name);
			return PTR_ERR(rdev);
		}
		ri->rdev = rdev;

		/* Enable external control if it is require */
		if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data &&
				tps_pdata->enable_ext_control) {
			ret = tps65090_config_ext_control(ri, true);
			if (ret < 0)
				return ret;
		}
	}

	platform_set_drvdata(pdev, pmic);
	return 0;
}

static struct platform_driver tps65090_regulator_driver = {
	.driver	= {
		.name	= "tps65090-pmic",
		.owner	= THIS_MODULE,
	},
	.probe		= tps65090_regulator_probe,
};

static int __init tps65090_regulator_init(void)
{
	return platform_driver_register(&tps65090_regulator_driver);
}
subsys_initcall(tps65090_regulator_init);

static void __exit tps65090_regulator_exit(void)
{
	platform_driver_unregister(&tps65090_regulator_driver);
}
module_exit(tps65090_regulator_exit);

MODULE_DESCRIPTION("tps65090 regulator driver");
MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tps65090-pmic");
Commit	Line	Data
452534e5 VB	1	/*
	2	* Regulator driver for tps65090 power management chip.
	3	*
	4	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	5
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>
	17	*/
	18
	19	#include <linux/module.h>
452534e5	20	#include <linux/init.h>
f329b175	21	#include <linux/gpio.h>
6c7a7a0e	22	#include <linux/of_gpio.h>
452534e5 VB	23	#include <linux/slab.h>
	24	#include <linux/err.h>
	25	#include <linux/platform_device.h>
	26	#include <linux/regulator/driver.h>
	27	#include <linux/regulator/machine.h>
6c7a7a0e	28	#include <linux/regulator/of_regulator.h>
452534e5	29	#include <linux/mfd/tps65090.h>
452534e5 VB	30
452534e5 VB	31	struct tps65090_regulator {
452534e5	32	struct device *dev;
24282a1c LD	33	struct regulator_desc *desc;
24282a1c LD	34	struct regulator_dev *rdev;
452534e5 VB	35	};
452534e5 VB	36
f329b175 LD	37	static struct regulator_ops tps65090_ext_control_ops = {
	38	};
	39
	40	static struct regulator_ops tps65090_reg_contol_ops = {
	41	.enable = regulator_enable_regmap,
	42	.disable = regulator_disable_regmap,
	43	.is_enabled = regulator_is_enabled_regmap,
452534e5 VB	44	};
452534e5 VB	45
3a81ef8c LD	46	static struct regulator_ops tps65090_ldo_ops = {
	47	};
	48
24282a1c	49	#define tps65090_REG_DESC(_id, _sname, _en_reg, _ops) \
452534e5	50	{ \
24282a1c LD	51	.name = "TPS65090_RAILS"#_id, \
24282a1c LD	52	.supply_name = _sname, \
8620ca9f	53	.id = TPS65090_REGULATOR_##_id, \
24282a1c LD	54	.ops = &_ops, \
	55	.enable_reg = _en_reg, \
	56	.enable_mask = BIT(0), \
	57	.type = REGULATOR_VOLTAGE, \
	58	.owner = THIS_MODULE, \
452534e5 VB	59	}
452534e5 VB	60
24282a1c	61	static struct regulator_desc tps65090_regulator_desc[] = {
f329b175 LD	62	tps65090_REG_DESC(DCDC1, "vsys1", 0x0C, tps65090_reg_contol_ops),
	63	tps65090_REG_DESC(DCDC2, "vsys2", 0x0D, tps65090_reg_contol_ops),
	64	tps65090_REG_DESC(DCDC3, "vsys3", 0x0E, tps65090_reg_contol_ops),
	65	tps65090_REG_DESC(FET1, "infet1", 0x0F, tps65090_reg_contol_ops),
	66	tps65090_REG_DESC(FET2, "infet2", 0x10, tps65090_reg_contol_ops),
	67	tps65090_REG_DESC(FET3, "infet3", 0x11, tps65090_reg_contol_ops),
	68	tps65090_REG_DESC(FET4, "infet4", 0x12, tps65090_reg_contol_ops),
	69	tps65090_REG_DESC(FET5, "infet5", 0x13, tps65090_reg_contol_ops),
	70	tps65090_REG_DESC(FET6, "infet6", 0x14, tps65090_reg_contol_ops),
	71	tps65090_REG_DESC(FET7, "infet7", 0x15, tps65090_reg_contol_ops),
6c7a7a0e LD	72	tps65090_REG_DESC(LDO1, "vsys-l1", 0, tps65090_ldo_ops),
6c7a7a0e LD	73	tps65090_REG_DESC(LDO2, "vsys-l2", 0, tps65090_ldo_ops),
452534e5 VB	74	};
452534e5 VB	75
24282a1c	76	static inline bool is_dcdc(int id)
452534e5	77	{
24282a1c	78	switch (id) {
8620ca9f LD	79	case TPS65090_REGULATOR_DCDC1:
	80	case TPS65090_REGULATOR_DCDC2:
	81	case TPS65090_REGULATOR_DCDC3:
24282a1c LD	82	return true;
	83	default:
	84	return false;
	85	}
	86	}
452534e5	87
a5023574	88	static int tps65090_config_ext_control(
24282a1c LD	89	struct tps65090_regulator *ri, bool enable)
	90	{
	91	int ret;
	92	struct device *parent = ri->dev->parent;
	93	unsigned int reg_en_reg = ri->desc->enable_reg;
	94
	95	if (enable)
	96	ret = tps65090_set_bits(parent, reg_en_reg, 1);
	97	else
	98	ret = tps65090_clr_bits(parent, reg_en_reg, 1);
	99	if (ret < 0)
	100	dev_err(ri->dev, "Error in updating reg 0x%x\n", reg_en_reg);
	101	return ret;
	102	}
	103
a5023574	104	static int tps65090_regulator_disable_ext_control(
24282a1c LD	105	struct tps65090_regulator *ri,
	106	struct tps65090_regulator_plat_data *tps_pdata)
	107	{
	108	int ret = 0;
	109	struct device *parent = ri->dev->parent;
	110	unsigned int reg_en_reg = ri->desc->enable_reg;
	111
	112	/*
	113	* First enable output for internal control if require.
	114	* And then disable external control.
	115	*/
	116	if (tps_pdata->reg_init_data->constraints.always_on \|\|
	117	tps_pdata->reg_init_data->constraints.boot_on) {
	118	ret = tps65090_set_bits(parent, reg_en_reg, 0);
	119	if (ret < 0) {
	120	dev_err(ri->dev, "Error in set reg 0x%x\n", reg_en_reg);
	121	return ret;
	122	}
452534e5	123	}
24282a1c	124	return tps65090_config_ext_control(ri, false);
452534e5 VB	125	}
452534e5 VB	126
a5023574	127	static void tps65090_configure_regulator_config(
f329b175 LD	128	struct tps65090_regulator_plat_data *tps_pdata,
	129	struct regulator_config *config)
	130	{
	131	if (gpio_is_valid(tps_pdata->gpio)) {
	132	int gpio_flag = GPIOF_OUT_INIT_LOW;
	133
	134	if (tps_pdata->reg_init_data->constraints.always_on \|\|
	135	tps_pdata->reg_init_data->constraints.boot_on)
	136	gpio_flag = GPIOF_OUT_INIT_HIGH;
	137
	138	config->ena_gpio = tps_pdata->gpio;
	139	config->ena_gpio_flags = gpio_flag;
	140	}
	141	}
	142
6c7a7a0e LD	143	#ifdef CONFIG_OF
	144	static struct of_regulator_match tps65090_matches[] = {
	145	{ .name = "dcdc1", },
	146	{ .name = "dcdc2", },
	147	{ .name = "dcdc3", },
	148	{ .name = "fet1", },
	149	{ .name = "fet2", },
	150	{ .name = "fet3", },
	151	{ .name = "fet4", },
	152	{ .name = "fet5", },
	153	{ .name = "fet6", },
	154	{ .name = "fet7", },
	155	{ .name = "ldo1", },
	156	{ .name = "ldo2", },
	157	};
	158
	159	static struct tps65090_platform_data *tps65090_parse_dt_reg_data(
	160	struct platform_device *pdev,
	161	struct of_regulator_match **tps65090_reg_matches)
	162	{
	163	struct tps65090_platform_data *tps65090_pdata;
	164	struct device_node *np = pdev->dev.parent->of_node;
	165	struct device_node *regulators;
	166	int idx = 0, ret;
	167	struct tps65090_regulator_plat_data *reg_pdata;
	168
	169	tps65090_pdata = devm_kzalloc(&pdev->dev, sizeof(*tps65090_pdata),
	170	GFP_KERNEL);
	171	if (!tps65090_pdata) {
	172	dev_err(&pdev->dev, "Memory alloc for tps65090_pdata failed\n");
	173	return ERR_PTR(-ENOMEM);
	174	}
	175
	176	reg_pdata = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX *
	177	sizeof(*reg_pdata), GFP_KERNEL);
	178	if (!reg_pdata) {
	179	dev_err(&pdev->dev, "Memory alloc for reg_pdata failed\n");
	180	return ERR_PTR(-ENOMEM);
	181	}
	182
4c850ead	183	regulators = of_get_child_by_name(np, "regulators");
6c7a7a0e LD	184	if (!regulators) {
	185	dev_err(&pdev->dev, "regulator node not found\n");
	186	return ERR_PTR(-ENODEV);
	187	}
	188
09a228e7	189	ret = of_regulator_match(&pdev->dev, regulators, tps65090_matches,
6c7a7a0e	190	ARRAY_SIZE(tps65090_matches));
026cdfe6	191	of_node_put(regulators);
6c7a7a0e LD	192	if (ret < 0) {
	193	dev_err(&pdev->dev,
	194	"Error parsing regulator init data: %d\n", ret);
	195	return ERR_PTR(ret);
	196	}
	197
	198	*tps65090_reg_matches = tps65090_matches;
	199	for (idx = 0; idx < ARRAY_SIZE(tps65090_matches); idx++) {
	200	struct regulator_init_data *ri_data;
	201	struct tps65090_regulator_plat_data *rpdata;
	202
	203	rpdata = &reg_pdata[idx];
	204	ri_data = tps65090_matches[idx].init_data;
	205	if (!ri_data \|\| !tps65090_matches[idx].of_node)
	206	continue;
	207
	208	rpdata->reg_init_data = ri_data;
	209	rpdata->enable_ext_control = of_property_read_bool(
	210	tps65090_matches[idx].of_node,
	211	"ti,enable-ext-control");
	212	if (rpdata->enable_ext_control)
	213	rpdata->gpio = of_get_named_gpio(np,
	214	"dcdc-ext-control-gpios", 0);
	215
	216	tps65090_pdata->reg_pdata[idx] = rpdata;
	217	}
	218	return tps65090_pdata;
	219	}
	220	#else
	221	static inline struct tps65090_platform_data *tps65090_parse_dt_reg_data(
	222	struct platform_device *pdev,
	223	struct of_regulator_match **tps65090_reg_matches)
	224	{
	225	*tps65090_reg_matches = NULL;
	226	return NULL;
	227	}
	228	#endif
	229
a5023574	230	static int tps65090_regulator_probe(struct platform_device *pdev)
452534e5	231	{
06c4998b	232	struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
452534e5	233	struct tps65090_regulator *ri = NULL;
c172708d	234	struct regulator_config config = { };
452534e5	235	struct regulator_dev *rdev;
24282a1c LD	236	struct tps65090_regulator_plat_data *tps_pdata;
	237	struct tps65090_regulator *pmic;
	238	struct tps65090_platform_data *tps65090_pdata;
6c7a7a0e	239	struct of_regulator_match *tps65090_reg_matches = NULL;
24282a1c LD	240	int num;
24282a1c LD	241	int ret;
452534e5	242
24282a1c	243	dev_dbg(&pdev->dev, "Probing regulator\n");
452534e5	244
24282a1c	245	tps65090_pdata = dev_get_platdata(pdev->dev.parent);
6c7a7a0e LD	246	if (!tps65090_pdata && tps65090_mfd->dev->of_node)
	247	tps65090_pdata = tps65090_parse_dt_reg_data(pdev,
	248	&tps65090_reg_matches);
	249	if (IS_ERR_OR_NULL(tps65090_pdata)) {
24282a1c	250	dev_err(&pdev->dev, "Platform data missing\n");
6c7a7a0e	251	return tps65090_pdata ? PTR_ERR(tps65090_pdata) : -EINVAL;
452534e5	252	}
24282a1c	253
8620ca9f	254	pmic = devm_kzalloc(&pdev->dev, TPS65090_REGULATOR_MAX * sizeof(*pmic),
24282a1c LD	255	GFP_KERNEL);
	256	if (!pmic) {
	257	dev_err(&pdev->dev, "mem alloc for pmic failed\n");
	258	return -ENOMEM;
	259	}
	260
8620ca9f	261	for (num = 0; num < TPS65090_REGULATOR_MAX; num++) {
24282a1c LD	262	tps_pdata = tps65090_pdata->reg_pdata[num];
	263
	264	ri = &pmic[num];
	265	ri->dev = &pdev->dev;
	266	ri->desc = &tps65090_regulator_desc[num];
	267
	268	/*
	269	* TPS5090 DCDC support the control from external digital input.
f329b175	270	* Configure it as per platform data.
24282a1c LD	271	*/
24282a1c LD	272	if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data) {
f329b175 LD	273	if (tps_pdata->enable_ext_control) {
	274	tps65090_configure_regulator_config(
	275	tps_pdata, &config);
	276	ri->desc->ops = &tps65090_ext_control_ops;
	277	} else {
	278	ret = tps65090_regulator_disable_ext_control(
24282a1c	279	ri, tps_pdata);
f329b175 LD	280	if (ret < 0) {
f329b175 LD	281	dev_err(&pdev->dev,
24282a1c	282	"failed disable ext control\n");
9738efae	283	return ret;
f329b175	284	}
24282a1c LD	285	}
24282a1c LD	286	}
f329b175	287
6c7a7a0e	288	config.dev = pdev->dev.parent;
24282a1c LD	289	config.driver_data = ri;
	290	config.regmap = tps65090_mfd->rmap;
	291	if (tps_pdata)
	292	config.init_data = tps_pdata->reg_init_data;
	293	else
	294	config.init_data = NULL;
6c7a7a0e LD	295	if (tps65090_reg_matches)
	296	config.of_node = tps65090_reg_matches[num].of_node;
	297	else
	298	config.of_node = NULL;
24282a1c	299
9738efae	300	rdev = devm_regulator_register(&pdev->dev, ri->desc, &config);
24282a1c LD	301	if (IS_ERR(rdev)) {
	302	dev_err(&pdev->dev, "failed to register regulator %s\n",
	303	ri->desc->name);
9738efae	304	return PTR_ERR(rdev);
24282a1c LD	305	}
24282a1c LD	306	ri->rdev = rdev;
f329b175 LD	307
	308	/* Enable external control if it is require */
	309	if (tps_pdata && is_dcdc(num) && tps_pdata->reg_init_data &&
	310	tps_pdata->enable_ext_control) {
	311	ret = tps65090_config_ext_control(ri, true);
9738efae SK	312	if (ret < 0)
9738efae SK	313	return ret;
f329b175	314	}
452534e5 VB	315	}
452534e5 VB	316
24282a1c	317	platform_set_drvdata(pdev, pmic);
452534e5	318	return 0;
452534e5 VB	319	}
	320
	321	static struct platform_driver tps65090_regulator_driver = {
	322	.driver = {
8620ca9f	323	.name = "tps65090-pmic",
452534e5 VB	324	.owner = THIS_MODULE,
	325	},
	326	.probe = tps65090_regulator_probe,
452534e5 VB	327	};
	328
	329	static int __init tps65090_regulator_init(void)
	330	{
	331	return platform_driver_register(&tps65090_regulator_driver);
	332	}
	333	subsys_initcall(tps65090_regulator_init);
	334
	335	static void __exit tps65090_regulator_exit(void)
	336	{
	337	platform_driver_unregister(&tps65090_regulator_driver);
	338	}
	339	module_exit(tps65090_regulator_exit);
	340
	341	MODULE_DESCRIPTION("tps65090 regulator driver");
	342	MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
	343	MODULE_LICENSE("GPL v2");
d95420b8	344	MODULE_ALIAS("platform:tps65090-pmic");