[mirror_ubuntu-artful-kernel.git] / drivers / mfd / tps65217.c

/*
 * tps65217.c
 *
 * TPS65217 chip family multi-function driver
 *
 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.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 version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
 * kind, whether express or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/device.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/kernel.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/slab.h>

#include <linux/mfd/core.h>
#include <linux/mfd/tps65217.h>

static struct resource charger_resources[] = {
	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_AC, "AC"),
	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_USB, "USB"),
};

static struct resource pb_resources[] = {
	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_PB, "PB"),
};

static void tps65217_irq_lock(struct irq_data *data)
{
	struct tps65217 *tps = irq_data_get_irq_chip_data(data);

	mutex_lock(&tps->irq_lock);
}

static void tps65217_irq_sync_unlock(struct irq_data *data)
{
	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
	int ret;

	ret = tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
				tps->irq_mask, TPS65217_PROTECT_NONE);
	if (ret != 0)
		dev_err(tps->dev, "Failed to sync IRQ masks\n");

	mutex_unlock(&tps->irq_lock);
}

static void tps65217_irq_enable(struct irq_data *data)
{
	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
	u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;

	tps->irq_mask &= ~mask;
}

static void tps65217_irq_disable(struct irq_data *data)
{
	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
	u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;

	tps->irq_mask |= mask;
}

static struct irq_chip tps65217_irq_chip = {
	.name			= "tps65217",
	.irq_bus_lock		= tps65217_irq_lock,
	.irq_bus_sync_unlock	= tps65217_irq_sync_unlock,
	.irq_enable		= tps65217_irq_enable,
	.irq_disable		= tps65217_irq_disable,
};

static struct mfd_cell tps65217s[] = {
	{
		.name = "tps65217-pmic",
		.of_compatible = "ti,tps65217-pmic",
	},
	{
		.name = "tps65217-bl",
		.of_compatible = "ti,tps65217-bl",
	},
	{
		.name = "tps65217-charger",
		.num_resources = ARRAY_SIZE(charger_resources),
		.resources = charger_resources,
		.of_compatible = "ti,tps65217-charger",
	},
	{
		.name = "tps65217-pwrbutton",
		.num_resources = ARRAY_SIZE(pb_resources),
		.resources = pb_resources,
		.of_compatible = "ti,tps65217-pwrbutton",
	},
};

static irqreturn_t tps65217_irq_thread(int irq, void *data)
{
	struct tps65217 *tps = data;
	unsigned int status;
	bool handled = false;
	int i;
	int ret;

	ret = tps65217_reg_read(tps, TPS65217_REG_INT, &status);
	if (ret < 0) {
		dev_err(tps->dev, "Failed to read IRQ status: %d\n",
			ret);
		return IRQ_NONE;
	}

	for (i = 0; i < TPS65217_NUM_IRQ; i++) {
		if (status & BIT(i)) {
			handle_nested_irq(irq_find_mapping(tps->irq_domain, i));
			handled = true;
		}
	}

	if (handled)
		return IRQ_HANDLED;

	return IRQ_NONE;
}

static int tps65217_irq_map(struct irq_domain *h, unsigned int virq,
			irq_hw_number_t hw)
{
	struct tps65217 *tps = h->host_data;

	irq_set_chip_data(virq, tps);
	irq_set_chip_and_handler(virq, &tps65217_irq_chip, handle_edge_irq);
	irq_set_nested_thread(virq, 1);
	irq_set_parent(virq, tps->irq);
	irq_set_noprobe(virq);

	return 0;
}

static const struct irq_domain_ops tps65217_irq_domain_ops = {
	.map = tps65217_irq_map,
};

static int tps65217_irq_init(struct tps65217 *tps, int irq)
{
	int ret;

	mutex_init(&tps->irq_lock);
	tps->irq = irq;

	/* Mask all interrupt sources */
	tps->irq_mask = TPS65217_INT_MASK;
	tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
			  TPS65217_INT_MASK, TPS65217_PROTECT_NONE);

	tps->irq_domain = irq_domain_add_linear(tps->dev->of_node,
		TPS65217_NUM_IRQ, &tps65217_irq_domain_ops, tps);
	if (!tps->irq_domain) {
		dev_err(tps->dev, "Could not create IRQ domain\n");
		return -ENOMEM;
	}

	ret = devm_request_threaded_irq(tps->dev, irq, NULL,
					tps65217_irq_thread, IRQF_ONESHOT,
					"tps65217-irq", tps);
	if (ret) {
		dev_err(tps->dev, "Failed to request IRQ %d: %d\n",
			irq, ret);
		return ret;
	}

	enable_irq_wake(irq);

	return 0;
}

/**
 * tps65217_reg_read: Read a single tps65217 register.
 *
 * @tps: Device to read from.
 * @reg: Register to read.
 * @val: Contians the value
 */
int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
			unsigned int *val)
{
	return regmap_read(tps->regmap, reg, val);
}
EXPORT_SYMBOL_GPL(tps65217_reg_read);

/**
 * tps65217_reg_write: Write a single tps65217 register.
 *
 * @tps65217: Device to write to.
 * @reg: Register to write to.
 * @val: Value to write.
 * @level: Password protected level
 */
int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
			unsigned int val, unsigned int level)
{
	int ret;
	unsigned int xor_reg_val;

	switch (level) {
	case TPS65217_PROTECT_NONE:
		return regmap_write(tps->regmap, reg, val);
	case TPS65217_PROTECT_L1:
		xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
		ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
							xor_reg_val);
		if (ret < 0)
			return ret;

		return regmap_write(tps->regmap, reg, val);
	case TPS65217_PROTECT_L2:
		xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
		ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
							xor_reg_val);
		if (ret < 0)
			return ret;
		ret = regmap_write(tps->regmap, reg, val);
		if (ret < 0)
			return ret;
		ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
							xor_reg_val);
		if (ret < 0)
			return ret;
		return regmap_write(tps->regmap, reg, val);
	default:
		return -EINVAL;
	}
}
EXPORT_SYMBOL_GPL(tps65217_reg_write);

/**
 * tps65217_update_bits: Modify bits w.r.t mask, val and level.
 *
 * @tps65217: Device to write to.
 * @reg: Register to read-write to.
 * @mask: Mask.
 * @val: Value to write.
 * @level: Password protected level
 */
static int tps65217_update_bits(struct tps65217 *tps, unsigned int reg,
		unsigned int mask, unsigned int val, unsigned int level)
{
	int ret;
	unsigned int data;

	ret = tps65217_reg_read(tps, reg, &data);
	if (ret) {
		dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
		return ret;
	}

	data &= ~mask;
	data |= val & mask;

	ret = tps65217_reg_write(tps, reg, data, level);
	if (ret)
		dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);

	return ret;
}

int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
		unsigned int mask, unsigned int val, unsigned int level)
{
	return tps65217_update_bits(tps, reg, mask, val, level);
}
EXPORT_SYMBOL_GPL(tps65217_set_bits);

int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
		unsigned int mask, unsigned int level)
{
	return tps65217_update_bits(tps, reg, mask, 0, level);
}
EXPORT_SYMBOL_GPL(tps65217_clear_bits);

static bool tps65217_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case TPS65217_REG_INT:
		return true;
	default:
		return false;
	}
}

static const struct regmap_config tps65217_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,

	.max_register = TPS65217_REG_MAX,
	.volatile_reg = tps65217_volatile_reg,
};

static const struct of_device_id tps65217_of_match[] = {
	{ .compatible = "ti,tps65217", .data = (void *)TPS65217 },
	{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, tps65217_of_match);

static int tps65217_probe(struct i2c_client *client,
				const struct i2c_device_id *ids)
{
	struct tps65217 *tps;
	unsigned int version;
	unsigned long chip_id = ids->driver_data;
	const struct of_device_id *match;
	bool status_off = false;
	int ret;

	if (client->dev.of_node) {
		match = of_match_device(tps65217_of_match, &client->dev);
		if (!match) {
			dev_err(&client->dev,
				"Failed to find matching dt id\n");
			return -EINVAL;
		}
		chip_id = (unsigned long)match->data;
		status_off = of_property_read_bool(client->dev.of_node,
					"ti,pmic-shutdown-controller");
	}

	if (!chip_id) {
		dev_err(&client->dev, "id is null.\n");
		return -ENODEV;
	}

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

	i2c_set_clientdata(client, tps);
	tps->dev = &client->dev;
	tps->id = chip_id;

	tps->regmap = devm_regmap_init_i2c(client, &tps65217_regmap_config);
	if (IS_ERR(tps->regmap)) {
		ret = PTR_ERR(tps->regmap);
		dev_err(tps->dev, "Failed to allocate register map: %d\n",
			ret);
		return ret;
	}

	if (client->irq) {
		tps65217_irq_init(tps, client->irq);
	} else {
		int i;

		/* Don't tell children about IRQ resources which won't fire */
		for (i = 0; i < ARRAY_SIZE(tps65217s); i++)
			tps65217s[i].num_resources = 0;
	}

	ret = devm_mfd_add_devices(tps->dev, -1, tps65217s,
				   ARRAY_SIZE(tps65217s), NULL, 0,
				   tps->irq_domain);
	if (ret < 0) {
		dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
		return ret;
	}

	ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
	if (ret < 0) {
		dev_err(tps->dev, "Failed to read revision register: %d\n",
			ret);
		return ret;
	}

	/* Set the PMIC to shutdown on PWR_EN toggle */
	if (status_off) {
		ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
				TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
				TPS65217_PROTECT_NONE);
		if (ret)
			dev_warn(tps->dev, "unable to set the status OFF\n");
	}

	dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
			(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
			version & TPS65217_CHIPID_REV_MASK);

	return 0;
}

static int tps65217_remove(struct i2c_client *client)
{
	struct tps65217 *tps = i2c_get_clientdata(client);
	unsigned int virq;
	int i;

	for (i = 0; i < TPS65217_NUM_IRQ; i++) {
		virq = irq_find_mapping(tps->irq_domain, i);
		if (virq)
			irq_dispose_mapping(virq);
	}

	irq_domain_remove(tps->irq_domain);
	tps->irq_domain = NULL;

	return 0;
}

static const struct i2c_device_id tps65217_id_table[] = {
	{"tps65217", TPS65217},
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, tps65217_id_table);

static struct i2c_driver tps65217_driver = {
	.driver		= {
		.name	= "tps65217",
		.of_match_table = tps65217_of_match,
	},
	.id_table	= tps65217_id_table,
	.probe		= tps65217_probe,
	.remove		= tps65217_remove,
};

static int __init tps65217_init(void)
{
	return i2c_add_driver(&tps65217_driver);
}
subsys_initcall(tps65217_init);

static void __exit tps65217_exit(void)
{
	i2c_del_driver(&tps65217_driver);
}
module_exit(tps65217_exit);

MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
MODULE_DESCRIPTION("TPS65217 chip family multi-function driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
d48f411c AC	1	/*
	2	* tps65217.c
	3	*
	4	* TPS65217 chip family multi-function driver
	5	*
	6	* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation version 2.
	11	*
	12	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	13	* kind, whether express or implied; without even the implied warranty
	14	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*/
	17
d48f411c	18	#include <linux/device.h>
6556bdac	19	#include <linux/err.h>
d48f411c	20	#include <linux/init.h>
6556bdac	21	#include <linux/interrupt.h>
d48f411c	22	#include <linux/i2c.h>
6556bdac MN	23	#include <linux/irq.h>
	24	#include <linux/irqdomain.h>
	25	#include <linux/kernel.h>
	26	#include <linux/module.h>
817bb7fb AC	27	#include <linux/of.h>
817bb7fb AC	28	#include <linux/of_device.h>
6556bdac MN	29	#include <linux/platform_device.h>
	30	#include <linux/regmap.h>
	31	#include <linux/slab.h>
d48f411c AC	32
	33	#include <linux/mfd/core.h>
	34	#include <linux/mfd/tps65217.h>
	35
6556bdac MN	36	static struct resource charger_resources[] = {
	37	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_AC, "AC"),
	38	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_USB, "USB"),
	39	};
	40
dea9c730 MN	41	static struct resource pb_resources[] = {
	42	DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_PB, "PB"),
	43	};
	44
6556bdac MN	45	static void tps65217_irq_lock(struct irq_data *data)
	46	{
	47	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
	48
	49	mutex_lock(&tps->irq_lock);
	50	}
	51
	52	static void tps65217_irq_sync_unlock(struct irq_data *data)
	53	{
	54	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
	55	int ret;
	56
fa917052 MK	57	ret = tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
fa917052 MK	58	tps->irq_mask, TPS65217_PROTECT_NONE);
6556bdac MN	59	if (ret != 0)
	60	dev_err(tps->dev, "Failed to sync IRQ masks\n");
	61
	62	mutex_unlock(&tps->irq_lock);
	63	}
	64
6556bdac MN	65	static void tps65217_irq_enable(struct irq_data *data)
	66	{
	67	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
fa917052	68	u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
6556bdac	69
fa917052	70	tps->irq_mask &= ~mask;
6556bdac MN	71	}
	72
	73	static void tps65217_irq_disable(struct irq_data *data)
	74	{
	75	struct tps65217 *tps = irq_data_get_irq_chip_data(data);
fa917052	76	u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
6556bdac	77
fa917052	78	tps->irq_mask \|= mask;
6556bdac MN	79	}
	80
	81	static struct irq_chip tps65217_irq_chip = {
f6602064	82	.name = "tps65217",
6556bdac MN	83	.irq_bus_lock = tps65217_irq_lock,
	84	.irq_bus_sync_unlock = tps65217_irq_sync_unlock,
	85	.irq_enable = tps65217_irq_enable,
	86	.irq_disable = tps65217_irq_disable,
	87	};
	88
	89	static struct mfd_cell tps65217s[] = {
817bb7fb AC	90	{
817bb7fb AC	91	.name = "tps65217-pmic",
11d0d300	92	.of_compatible = "ti,tps65217-pmic",
817bb7fb	93	},
b6290ffe MK	94	{
b6290ffe MK	95	.name = "tps65217-bl",
11d0d300	96	.of_compatible = "ti,tps65217-bl",
b6290ffe	97	},
55cec67a EBS	98	{
55cec67a EBS	99	.name = "tps65217-charger",
6556bdac MN	100	.num_resources = ARRAY_SIZE(charger_resources),
6556bdac MN	101	.resources = charger_resources,
55cec67a EBS	102	.of_compatible = "ti,tps65217-charger",
55cec67a EBS	103	},
dea9c730 MN	104	{
	105	.name = "tps65217-pwrbutton",
	106	.num_resources = ARRAY_SIZE(pb_resources),
	107	.resources = pb_resources,
	108	.of_compatible = "ti,tps65217-pwrbutton",
	109	},
817bb7fb AC	110	};
817bb7fb AC	111
6556bdac MN	112	static irqreturn_t tps65217_irq_thread(int irq, void *data)
	113	{
	114	struct tps65217 *tps = data;
	115	unsigned int status;
	116	bool handled = false;
	117	int i;
	118	int ret;
	119
	120	ret = tps65217_reg_read(tps, TPS65217_REG_INT, &status);
	121	if (ret < 0) {
	122	dev_err(tps->dev, "Failed to read IRQ status: %d\n",
	123	ret);
	124	return IRQ_NONE;
	125	}
	126
fa917052 MK	127	for (i = 0; i < TPS65217_NUM_IRQ; i++) {
fa917052 MK	128	if (status & BIT(i)) {
6556bdac MN	129	handle_nested_irq(irq_find_mapping(tps->irq_domain, i));
	130	handled = true;
	131	}
	132	}
	133
	134	if (handled)
	135	return IRQ_HANDLED;
	136
	137	return IRQ_NONE;
	138	}
	139
	140	static int tps65217_irq_map(struct irq_domain *h, unsigned int virq,
	141	irq_hw_number_t hw)
	142	{
	143	struct tps65217 *tps = h->host_data;
	144
	145	irq_set_chip_data(virq, tps);
	146	irq_set_chip_and_handler(virq, &tps65217_irq_chip, handle_edge_irq);
	147	irq_set_nested_thread(virq, 1);
	148	irq_set_parent(virq, tps->irq);
	149	irq_set_noprobe(virq);
	150
	151	return 0;
	152	}
	153
	154	static const struct irq_domain_ops tps65217_irq_domain_ops = {
	155	.map = tps65217_irq_map,
	156	};
	157
	158	static int tps65217_irq_init(struct tps65217 *tps, int irq)
	159	{
	160	int ret;
	161
	162	mutex_init(&tps->irq_lock);
	163	tps->irq = irq;
	164
	165	/* Mask all interrupt sources */
6d2c2b9f MK	166	tps->irq_mask = TPS65217_INT_MASK;
	167	tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
	168	TPS65217_INT_MASK, TPS65217_PROTECT_NONE);
6556bdac MN	169
	170	tps->irq_domain = irq_domain_add_linear(tps->dev->of_node,
	171	TPS65217_NUM_IRQ, &tps65217_irq_domain_ops, tps);
	172	if (!tps->irq_domain) {
	173	dev_err(tps->dev, "Could not create IRQ domain\n");
	174	return -ENOMEM;
	175	}
	176
	177	ret = devm_request_threaded_irq(tps->dev, irq, NULL,
	178	tps65217_irq_thread, IRQF_ONESHOT,
	179	"tps65217-irq", tps);
	180	if (ret) {
	181	dev_err(tps->dev, "Failed to request IRQ %d: %d\n",
	182	irq, ret);
	183	return ret;
	184	}
	185
93559191 MK	186	enable_irq_wake(irq);
93559191 MK	187
6556bdac MN	188	return 0;
	189	}
	190
d48f411c AC	191	/**
	192	* tps65217_reg_read: Read a single tps65217 register.
	193	*
	194	* @tps: Device to read from.
	195	* @reg: Register to read.
	196	* @val: Contians the value
	197	*/
	198	int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
	199	unsigned int *val)
	200	{
	201	return regmap_read(tps->regmap, reg, val);
	202	}
	203	EXPORT_SYMBOL_GPL(tps65217_reg_read);
	204
	205	/**
	206	* tps65217_reg_write: Write a single tps65217 register.
	207	*
	208	* @tps65217: Device to write to.
	209	* @reg: Register to write to.
	210	* @val: Value to write.
	211	* @level: Password protected level
	212	*/
	213	int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
	214	unsigned int val, unsigned int level)
	215	{
	216	int ret;
	217	unsigned int xor_reg_val;
	218
	219	switch (level) {
	220	case TPS65217_PROTECT_NONE:
	221	return regmap_write(tps->regmap, reg, val);
	222	case TPS65217_PROTECT_L1:
	223	xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
	224	ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
	225	xor_reg_val);
	226	if (ret < 0)
	227	return ret;
	228
	229	return regmap_write(tps->regmap, reg, val);
	230	case TPS65217_PROTECT_L2:
	231	xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
	232	ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
	233	xor_reg_val);
	234	if (ret < 0)
	235	return ret;
	236	ret = regmap_write(tps->regmap, reg, val);
	237	if (ret < 0)
	238	return ret;
	239	ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
	240	xor_reg_val);
	241	if (ret < 0)
	242	return ret;
	243	return regmap_write(tps->regmap, reg, val);
	244	default:
	245	return -EINVAL;
	246	}
	247	}
	248	EXPORT_SYMBOL_GPL(tps65217_reg_write);
	249
	250	/**
	251	* tps65217_update_bits: Modify bits w.r.t mask, val and level.
	252	*
	253	* @tps65217: Device to write to.
	254	* @reg: Register to read-write to.
255	* @mask: Mask.
256	* @val: Value to write.
257	* @level: Password protected level
258	*/
27757e82	259	static int tps65217_update_bits(struct tps65217 *tps, unsigned int reg,
d48f411c AC	260	unsigned int mask, unsigned int val, unsigned int level)
	261	{
	262	int ret;
	263	unsigned int data;
	264
	265	ret = tps65217_reg_read(tps, reg, &data);
	266	if (ret) {
	267	dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
	268	return ret;
	269	}
	270
	271	data &= ~mask;
	272	data \|= val & mask;
	273
	274	ret = tps65217_reg_write(tps, reg, data, level);
	275	if (ret)
	276	dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
	277
	278	return ret;
	279	}
	280
	281	int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
	282	unsigned int mask, unsigned int val, unsigned int level)
	283	{
	284	return tps65217_update_bits(tps, reg, mask, val, level);
	285	}
	286	EXPORT_SYMBOL_GPL(tps65217_set_bits);
	287
	288	int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
	289	unsigned int mask, unsigned int level)
	290	{
	291	return tps65217_update_bits(tps, reg, mask, 0, level);
	292	}
	293	EXPORT_SYMBOL_GPL(tps65217_clear_bits);
	294
6556bdac MN	295	static bool tps65217_volatile_reg(struct device *dev, unsigned int reg)
	296	{
	297	switch (reg) {
	298	case TPS65217_REG_INT:
	299	return true;
	300	default:
	301	return false;
	302	}
	303	}
	304
af0a837d	305	static const struct regmap_config tps65217_regmap_config = {
d48f411c AC	306	.reg_bits = 8,
d48f411c AC	307	.val_bits = 8,
0b496b4c MB	308
0b496b4c MB	309	.max_register = TPS65217_REG_MAX,
6556bdac	310	.volatile_reg = tps65217_volatile_reg,
d48f411c AC	311	};
d48f411c AC	312
817bb7fb AC	313	static const struct of_device_id tps65217_of_match[] = {
	314	{ .compatible = "ti,tps65217", .data = (void *)TPS65217 },
	315	{ /* sentinel */ },
	316	};
4895e493	317	MODULE_DEVICE_TABLE(of, tps65217_of_match);
817bb7fb	318
f791be49	319	static int tps65217_probe(struct i2c_client *client,
d48f411c AC	320	const struct i2c_device_id *ids)
	321	{
	322	struct tps65217 *tps;
d48f411c	323	unsigned int version;
5c6fbd56	324	unsigned long chip_id = ids->driver_data;
817bb7fb	325	const struct of_device_id *match;
eb433dad	326	bool status_off = false;
817bb7fb	327	int ret;
d48f411c	328
817bb7fb AC	329	if (client->dev.of_node) {
	330	match = of_match_device(tps65217_of_match, &client->dev);
	331	if (!match) {
	332	dev_err(&client->dev,
	333	"Failed to find matching dt id\n");
	334	return -EINVAL;
	335	}
5c6fbd56	336	chip_id = (unsigned long)match->data;
eb433dad CFP	337	status_off = of_property_read_bool(client->dev.of_node,
eb433dad CFP	338	"ti,pmic-shutdown-controller");
817bb7fb AC	339	}
	340
	341	if (!chip_id) {
	342	dev_err(&client->dev, "id is null.\n");
	343	return -ENODEV;
	344	}
a7f1b63e	345
d48f411c AC	346	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
	347	if (!tps)
	348	return -ENOMEM;
	349
817bb7fb AC	350	i2c_set_clientdata(client, tps);
	351	tps->dev = &client->dev;
	352	tps->id = chip_id;
	353
0ef4619c	354	tps->regmap = devm_regmap_init_i2c(client, &tps65217_regmap_config);
d48f411c AC	355	if (IS_ERR(tps->regmap)) {
	356	ret = PTR_ERR(tps->regmap);
	357	dev_err(tps->dev, "Failed to allocate register map: %d\n",
	358	ret);
	359	return ret;
	360	}
	361
6556bdac MN	362	if (client->irq) {
	363	tps65217_irq_init(tps, client->irq);
	364	} else {
	365	int i;
	366
	367	/* Don't tell children about IRQ resources which won't fire */
	368	for (i = 0; i < ARRAY_SIZE(tps65217s); i++)
	369	tps65217s[i].num_resources = 0;
	370	}
	371
b89b6b6b	372	ret = devm_mfd_add_devices(tps->dev, -1, tps65217s,
6556bdac MN	373	ARRAY_SIZE(tps65217s), NULL, 0,
6556bdac MN	374	tps->irq_domain);
817bb7fb AC	375	if (ret < 0) {
	376	dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
	377	return ret;
	378	}
d48f411c AC	379
	380	ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
	381	if (ret < 0) {
0ef4619c AL	382	dev_err(tps->dev, "Failed to read revision register: %d\n",
	383	ret);
	384	return ret;
d48f411c AC	385	}
d48f411c AC	386
eb433dad CFP	387	/* Set the PMIC to shutdown on PWR_EN toggle */
	388	if (status_off) {
	389	ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
	390	TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
	391	TPS65217_PROTECT_NONE);
	392	if (ret)
	393	dev_warn(tps->dev, "unable to set the status OFF\n");
	394	}
	395
d48f411c AC	396	dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
	397	(version & TPS65217_CHIPID_CHIP_MASK) >> 4,
	398	version & TPS65217_CHIPID_REV_MASK);
	399
d48f411c	400	return 0;
d48f411c AC	401	}
d48f411c AC	402
40a50f8b MK	403	static int tps65217_remove(struct i2c_client *client)
	404	{
	405	struct tps65217 *tps = i2c_get_clientdata(client);
	406	unsigned int virq;
	407	int i;
	408
fa917052	409	for (i = 0; i < TPS65217_NUM_IRQ; i++) {
40a50f8b MK	410	virq = irq_find_mapping(tps->irq_domain, i);
	411	if (virq)
	412	irq_dispose_mapping(virq);
	413	}
	414
	415	irq_domain_remove(tps->irq_domain);
	416	tps->irq_domain = NULL;
	417
	418	return 0;
	419	}
	420
d48f411c	421	static const struct i2c_device_id tps65217_id_table[] = {
817bb7fb AC	422	{"tps65217", TPS65217},
817bb7fb AC	423	{ /* sentinel */ }
d48f411c AC	424	};
	425	MODULE_DEVICE_TABLE(i2c, tps65217_id_table);
	426
	427	static struct i2c_driver tps65217_driver = {
	428	.driver = {
	429	.name = "tps65217",
a351451a	430	.of_match_table = tps65217_of_match,
d48f411c AC	431	},
	432	.id_table = tps65217_id_table,
	433	.probe = tps65217_probe,
40a50f8b	434	.remove = tps65217_remove,
d48f411c AC	435	};
	436
	437	static int __init tps65217_init(void)
	438	{
	439	return i2c_add_driver(&tps65217_driver);
	440	}
	441	subsys_initcall(tps65217_init);
	442
	443	static void __exit tps65217_exit(void)
	444	{
	445	i2c_del_driver(&tps65217_driver);
	446	}
	447	module_exit(tps65217_exit);
	448
	449	MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
	450	MODULE_DESCRIPTION("TPS65217 chip family multi-function driver");
	451	MODULE_LICENSE("GPL v2");