[linux-2.6-block.git] / drivers / mfd / tps6586x.c

/*
 * Core driver for TI TPS6586x PMIC family
 *
 * Copyright (c) 2010 CompuLab Ltd.
 * Mike Rapoport <mike@compulab.co.il>
 *
 * Based on da903x.c.
 * Copyright (C) 2008 Compulab, Ltd.
 * Mike Rapoport <mike@compulab.co.il>
 * Copyright (C) 2006-2008 Marvell International Ltd.
 * Eric Miao <eric.miao@marvell.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>

#include <linux/mfd/core.h>
#include <linux/mfd/tps6586x.h>

#define TPS6586X_SUPPLYENE	0x14
#define EXITSLREQ_BIT		BIT(1)
#define SLEEP_MODE_BIT		BIT(3)

/* interrupt control registers */
#define TPS6586X_INT_ACK1	0xb5
#define TPS6586X_INT_ACK2	0xb6
#define TPS6586X_INT_ACK3	0xb7
#define TPS6586X_INT_ACK4	0xb8

/* interrupt mask registers */
#define TPS6586X_INT_MASK1	0xb0
#define TPS6586X_INT_MASK2	0xb1
#define TPS6586X_INT_MASK3	0xb2
#define TPS6586X_INT_MASK4	0xb3
#define TPS6586X_INT_MASK5	0xb4

/* device id */
#define TPS6586X_VERSIONCRC	0xcd

/* Maximum register */
#define TPS6586X_MAX_REGISTER	(TPS6586X_VERSIONCRC + 1)

struct tps6586x_irq_data {
	u8	mask_reg;
	u8	mask_mask;
};

#define TPS6586X_IRQ(_reg, _mask)				\
	{							\
		.mask_reg = (_reg) - TPS6586X_INT_MASK1,	\
		.mask_mask = (_mask),				\
	}

static const struct tps6586x_irq_data tps6586x_irqs[] = {
	[TPS6586X_INT_PLDO_0]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
	[TPS6586X_INT_PLDO_1]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
	[TPS6586X_INT_PLDO_2]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
	[TPS6586X_INT_PLDO_3]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
	[TPS6586X_INT_PLDO_4]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
	[TPS6586X_INT_PLDO_5]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
	[TPS6586X_INT_PLDO_6]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
	[TPS6586X_INT_PLDO_7]	= TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
	[TPS6586X_INT_COMP_DET]	= TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
	[TPS6586X_INT_ADC]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
	[TPS6586X_INT_PLDO_8]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
	[TPS6586X_INT_PLDO_9]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
	[TPS6586X_INT_PSM_0]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
	[TPS6586X_INT_PSM_1]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
	[TPS6586X_INT_PSM_2]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
	[TPS6586X_INT_PSM_3]	= TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
	[TPS6586X_INT_RTC_ALM1]	= TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
	[TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
	[TPS6586X_INT_USB_DET]	= TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
	[TPS6586X_INT_AC_DET]	= TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
	[TPS6586X_INT_BAT_DET]	= TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
	[TPS6586X_INT_CHG_STAT]	= TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
	[TPS6586X_INT_CHG_TEMP]	= TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
	[TPS6586X_INT_PP]	= TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
	[TPS6586X_INT_RESUME]	= TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
	[TPS6586X_INT_LOW_SYS]	= TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
	[TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
};

static struct mfd_cell tps6586x_cell[] = {
	{
		.name = "tps6586x-gpio",
	},
	{
		.name = "tps6586x-rtc",
	},
	{
		.name = "tps6586x-onkey",
	},
};

struct tps6586x {
	struct device		*dev;
	struct i2c_client	*client;
	struct regmap		*regmap;

	struct irq_chip		irq_chip;
	struct mutex		irq_lock;
	int			irq_base;
	u32			irq_en;
	u8			mask_reg[5];
};

static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
{
	return i2c_get_clientdata(to_i2c_client(dev));
}

int tps6586x_write(struct device *dev, int reg, uint8_t val)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_write(tps6586x->regmap, reg, val);
}
EXPORT_SYMBOL_GPL(tps6586x_write);

int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_bulk_write(tps6586x->regmap, reg, val, len);
}
EXPORT_SYMBOL_GPL(tps6586x_writes);

int tps6586x_read(struct device *dev, int reg, uint8_t *val)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
	unsigned int rval;
	int ret;

	ret = regmap_read(tps6586x->regmap, reg, &rval);
	if (!ret)
		*val = rval;
	return ret;
}
EXPORT_SYMBOL_GPL(tps6586x_read);

int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_bulk_read(tps6586x->regmap, reg, val, len);
}
EXPORT_SYMBOL_GPL(tps6586x_reads);

int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
}
EXPORT_SYMBOL_GPL(tps6586x_set_bits);

int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
}
EXPORT_SYMBOL_GPL(tps6586x_clr_bits);

int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
{
	struct tps6586x *tps6586x = dev_to_tps6586x(dev);

	return regmap_update_bits(tps6586x->regmap, reg, mask, val);
}
EXPORT_SYMBOL_GPL(tps6586x_update);

static int __remove_subdev(struct device *dev, void *unused)
{
	platform_device_unregister(to_platform_device(dev));
	return 0;
}

static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
{
	return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
}

static void tps6586x_irq_lock(struct irq_data *data)
{
	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);

	mutex_lock(&tps6586x->irq_lock);
}

static void tps6586x_irq_enable(struct irq_data *irq_data)
{
	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
	unsigned int __irq = irq_data->irq - tps6586x->irq_base;
	const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];

	tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
	tps6586x->irq_en |= (1 << __irq);
}

static void tps6586x_irq_disable(struct irq_data *irq_data)
{
	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);

	unsigned int __irq = irq_data->irq - tps6586x->irq_base;
	const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];

	tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
	tps6586x->irq_en &= ~(1 << __irq);
}

static void tps6586x_irq_sync_unlock(struct irq_data *data)
{
	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
	int i;

	for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
		int ret;
		ret = tps6586x_write(tps6586x->dev,
					    TPS6586X_INT_MASK1 + i,
					    tps6586x->mask_reg[i]);
		WARN_ON(ret);
	}

	mutex_unlock(&tps6586x->irq_lock);
}

static irqreturn_t tps6586x_irq(int irq, void *data)
{
	struct tps6586x *tps6586x = data;
	u32 acks;
	int ret = 0;

	ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
			     sizeof(acks), (uint8_t *)&acks);

	if (ret < 0) {
		dev_err(tps6586x->dev, "failed to read interrupt status\n");
		return IRQ_NONE;
	}

	acks = le32_to_cpu(acks);

	while (acks) {
		int i = __ffs(acks);

		if (tps6586x->irq_en & (1 << i))
			handle_nested_irq(tps6586x->irq_base + i);

		acks &= ~(1 << i);
	}

	return IRQ_HANDLED;
}

static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
				       int irq_base)
{
	int i, ret;
	u8 tmp[4];

	if (!irq_base) {
		dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n");
		return -EINVAL;
	}

	mutex_init(&tps6586x->irq_lock);
	for (i = 0; i < 5; i++) {
		tps6586x->mask_reg[i] = 0xff;
		tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
	}

	tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);

	tps6586x->irq_base = irq_base;

	tps6586x->irq_chip.name = "tps6586x";
	tps6586x->irq_chip.irq_enable = tps6586x_irq_enable;
	tps6586x->irq_chip.irq_disable = tps6586x_irq_disable;
	tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock;
	tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock;

	for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) {
		int __irq = i + tps6586x->irq_base;
		irq_set_chip_data(__irq, tps6586x);
		irq_set_chip_and_handler(__irq, &tps6586x->irq_chip,
					 handle_simple_irq);
		irq_set_nested_thread(__irq, 1);
#ifdef CONFIG_ARM
		set_irq_flags(__irq, IRQF_VALID);
#endif
	}

	ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
				   "tps6586x", tps6586x);

	if (!ret) {
		device_init_wakeup(tps6586x->dev, 1);
		enable_irq_wake(irq);
	}

	return ret;
}

static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
					  struct tps6586x_platform_data *pdata)
{
	struct tps6586x_subdev_info *subdev;
	struct platform_device *pdev;
	int i, ret = 0;

	for (i = 0; i < pdata->num_subdevs; i++) {
		subdev = &pdata->subdevs[i];

		pdev = platform_device_alloc(subdev->name, subdev->id);
		if (!pdev) {
			ret = -ENOMEM;
			goto failed;
		}

		pdev->dev.parent = tps6586x->dev;
		pdev->dev.platform_data = subdev->platform_data;
		pdev->dev.of_node = subdev->of_node;

		ret = platform_device_add(pdev);
		if (ret) {
			platform_device_put(pdev);
			goto failed;
		}
	}
	return 0;

failed:
	tps6586x_remove_subdevs(tps6586x);
	return ret;
}

#ifdef CONFIG_OF
static struct of_regulator_match tps6586x_matches[] = {
	{ .name = "sys",     .driver_data = (void *)TPS6586X_ID_SYS     },
	{ .name = "sm0",     .driver_data = (void *)TPS6586X_ID_SM_0    },
	{ .name = "sm1",     .driver_data = (void *)TPS6586X_ID_SM_1    },
	{ .name = "sm2",     .driver_data = (void *)TPS6586X_ID_SM_2    },
	{ .name = "ldo0",    .driver_data = (void *)TPS6586X_ID_LDO_0   },
	{ .name = "ldo1",    .driver_data = (void *)TPS6586X_ID_LDO_1   },
	{ .name = "ldo2",    .driver_data = (void *)TPS6586X_ID_LDO_2   },
	{ .name = "ldo3",    .driver_data = (void *)TPS6586X_ID_LDO_3   },
	{ .name = "ldo4",    .driver_data = (void *)TPS6586X_ID_LDO_4   },
	{ .name = "ldo5",    .driver_data = (void *)TPS6586X_ID_LDO_5   },
	{ .name = "ldo6",    .driver_data = (void *)TPS6586X_ID_LDO_6   },
	{ .name = "ldo7",    .driver_data = (void *)TPS6586X_ID_LDO_7   },
	{ .name = "ldo8",    .driver_data = (void *)TPS6586X_ID_LDO_8   },
	{ .name = "ldo9",    .driver_data = (void *)TPS6586X_ID_LDO_9   },
	{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
};

static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
{
	const unsigned int num = ARRAY_SIZE(tps6586x_matches);
	struct device_node *np = client->dev.of_node;
	struct tps6586x_platform_data *pdata;
	struct tps6586x_subdev_info *devs;
	struct device_node *regs;
	const char *sys_rail_name = NULL;
	unsigned int count;
	unsigned int i, j;
	int err;

	regs = of_find_node_by_name(np, "regulators");
	if (!regs)
		return NULL;

	err = of_regulator_match(&client->dev, regs, tps6586x_matches, num);
	if (err < 0) {
		of_node_put(regs);
		return NULL;
	}

	of_node_put(regs);
	count = err;

	devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL);
	if (!devs)
		return NULL;

	for (i = 0, j = 0; i < num && j < count; i++) {
		struct regulator_init_data *reg_idata;

		if (!tps6586x_matches[i].init_data)
			continue;

		reg_idata  = tps6586x_matches[i].init_data;
		devs[j].name = "tps6586x-regulator";
		devs[j].platform_data = tps6586x_matches[i].init_data;
		devs[j].id = (int)tps6586x_matches[i].driver_data;
		if (devs[j].id == TPS6586X_ID_SYS)
			sys_rail_name = reg_idata->constraints.name;

		if ((devs[j].id == TPS6586X_ID_LDO_5) ||
			(devs[j].id == TPS6586X_ID_LDO_RTC))
			reg_idata->supply_regulator = sys_rail_name;

		devs[j].of_node = tps6586x_matches[i].of_node;
		j++;
	}

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

	pdata->num_subdevs = count;
	pdata->subdevs = devs;
	pdata->gpio_base = -1;
	pdata->irq_base = -1;
	pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");

	return pdata;
}

static struct of_device_id tps6586x_of_match[] = {
	{ .compatible = "ti,tps6586x", },
	{ },
};
#else
static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
{
	return NULL;
}
#endif

static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
	/* Cache all interrupt mask register */
	if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
		return false;

	return true;
}

static const struct regmap_config tps6586x_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = TPS6586X_MAX_REGISTER - 1,
	.volatile_reg = is_volatile_reg,
	.cache_type = REGCACHE_RBTREE,
};

static struct device *tps6586x_dev;
static void tps6586x_power_off(void)
{
	if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
		return;

	tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
}

static int tps6586x_i2c_probe(struct i2c_client *client,
					const struct i2c_device_id *id)
{
	struct tps6586x_platform_data *pdata = client->dev.platform_data;
	struct tps6586x *tps6586x;
	int ret;

	if (!pdata && client->dev.of_node)
		pdata = tps6586x_parse_dt(client);

	if (!pdata) {
		dev_err(&client->dev, "tps6586x requires platform data\n");
		return -ENOTSUPP;
	}

	ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
	if (ret < 0) {
		dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
		return -EIO;
	}

	dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);

	tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
	if (tps6586x == NULL) {
		dev_err(&client->dev, "memory for tps6586x alloc failed\n");
		return -ENOMEM;
	}

	tps6586x->client = client;
	tps6586x->dev = &client->dev;
	i2c_set_clientdata(client, tps6586x);

	tps6586x->regmap = devm_regmap_init_i2c(client,
					&tps6586x_regmap_config);
	if (IS_ERR(tps6586x->regmap)) {
		ret = PTR_ERR(tps6586x->regmap);
		dev_err(&client->dev, "regmap init failed: %d\n", ret);
		return ret;
	}


	if (client->irq) {
		ret = tps6586x_irq_init(tps6586x, client->irq,
					pdata->irq_base);
		if (ret) {
			dev_err(&client->dev, "IRQ init failed: %d\n", ret);
			return ret;
		}
	}

	ret = mfd_add_devices(tps6586x->dev, -1,
			      tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
			      NULL, 0, NULL);
	if (ret < 0) {
		dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
		goto err_mfd_add;
	}

	ret = tps6586x_add_subdevs(tps6586x, pdata);
	if (ret) {
		dev_err(&client->dev, "add devices failed: %d\n", ret);
		goto err_add_devs;
	}

	if (pdata->pm_off && !pm_power_off) {
		tps6586x_dev = &client->dev;
		pm_power_off = tps6586x_power_off;
	}

	return 0;

err_add_devs:
	mfd_remove_devices(tps6586x->dev);
err_mfd_add:
	if (client->irq)
		free_irq(client->irq, tps6586x);
	return ret;
}

static int __devexit tps6586x_i2c_remove(struct i2c_client *client)
{
	struct tps6586x *tps6586x = i2c_get_clientdata(client);

	tps6586x_remove_subdevs(tps6586x);
	mfd_remove_devices(tps6586x->dev);
	if (client->irq)
		free_irq(client->irq, tps6586x);
	return 0;
}

static const struct i2c_device_id tps6586x_id_table[] = {
	{ "tps6586x", 0 },
	{ },
};
MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);

static struct i2c_driver tps6586x_driver = {
	.driver	= {
		.name	= "tps6586x",
		.owner	= THIS_MODULE,
		.of_match_table = of_match_ptr(tps6586x_of_match),
	},
	.probe		= tps6586x_i2c_probe,
	.remove		= tps6586x_i2c_remove,
	.id_table	= tps6586x_id_table,
};

static int __init tps6586x_init(void)
{
	return i2c_add_driver(&tps6586x_driver);
}
subsys_initcall(tps6586x_init);

static void __exit tps6586x_exit(void)
{
	i2c_del_driver(&tps6586x_driver);
}
module_exit(tps6586x_exit);

MODULE_DESCRIPTION("TPS6586X core driver");
MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
MODULE_LICENSE("GPL");
Commit	Line	Data
c6c19332 MR	1	/*
	2	* Core driver for TI TPS6586x PMIC family
	3	*
	4	* Copyright (c) 2010 CompuLab Ltd.
	5	* Mike Rapoport <mike@compulab.co.il>
	6	*
	7	* Based on da903x.c.
	8	* Copyright (C) 2008 Compulab, Ltd.
	9	* Mike Rapoport <mike@compulab.co.il>
	10	* Copyright (C) 2006-2008 Marvell International Ltd.
	11	* Eric Miao <eric.miao@marvell.com>
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License version 2 as
	15	* published by the Free Software Foundation.
	16	*/
	17
c26448c4 GK	18	#include <linux/interrupt.h>
c26448c4 GK	19	#include <linux/irq.h>
c6c19332 MR	20	#include <linux/kernel.h>
	21	#include <linux/module.h>
	22	#include <linux/mutex.h>
	23	#include <linux/slab.h>
1176b5be	24	#include <linux/err.h>
c6c19332	25	#include <linux/i2c.h>
1176b5be	26	#include <linux/regmap.h>
62f6b087	27	#include <linux/regulator/of_regulator.h>
9394b80c	28	#include <linux/regulator/machine.h>
c6c19332 MR	29
	30	#include <linux/mfd/core.h>
	31	#include <linux/mfd/tps6586x.h>
	32
004c15a6 BH	33	#define TPS6586X_SUPPLYENE 0x14
	34	#define EXITSLREQ_BIT BIT(1)
	35	#define SLEEP_MODE_BIT BIT(3)
	36
c26448c4 GK	37	/* interrupt control registers */
	38	#define TPS6586X_INT_ACK1 0xb5
	39	#define TPS6586X_INT_ACK2 0xb6
	40	#define TPS6586X_INT_ACK3 0xb7
	41	#define TPS6586X_INT_ACK4 0xb8
	42
	43	/* interrupt mask registers */
	44	#define TPS6586X_INT_MASK1 0xb0
	45	#define TPS6586X_INT_MASK2 0xb1
	46	#define TPS6586X_INT_MASK3 0xb2
	47	#define TPS6586X_INT_MASK4 0xb3
	48	#define TPS6586X_INT_MASK5 0xb4
	49
c6c19332 MR	50	/* device id */
c6c19332 MR	51	#define TPS6586X_VERSIONCRC 0xcd
c6c19332	52
1176b5be LD	53	/* Maximum register */
	54	#define TPS6586X_MAX_REGISTER (TPS6586X_VERSIONCRC + 1)
	55
c26448c4 GK	56	struct tps6586x_irq_data {
	57	u8 mask_reg;
	58	u8 mask_mask;
	59	};
	60
	61	#define TPS6586X_IRQ(_reg, _mask) \
	62	{ \
	63	.mask_reg = (_reg) - TPS6586X_INT_MASK1, \
	64	.mask_mask = (_mask), \
	65	}
	66
	67	static const struct tps6586x_irq_data tps6586x_irqs[] = {
	68	[TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
	69	[TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
	70	[TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
	71	[TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
	72	[TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
	73	[TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
	74	[TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
	75	[TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
	76	[TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
	77	[TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
	78	[TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
	79	[TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
	80	[TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
	81	[TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
	82	[TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
	83	[TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
	84	[TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
	85	[TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
	86	[TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
	87	[TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
	88	[TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
	89	[TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
	90	[TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
	91	[TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
	92	[TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
	93	[TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
	94	[TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
	95	};
	96
7a7487cb LD	97	static struct mfd_cell tps6586x_cell[] = {
	98	{
	99	.name = "tps6586x-gpio",
	100	},
	101	{
	102	.name = "tps6586x-rtc",
	103	},
	104	{
	105	.name = "tps6586x-onkey",
	106	},
	107	};
	108
c6c19332	109	struct tps6586x {
c6c19332 MR	110	struct device *dev;
c6c19332 MR	111	struct i2c_client *client;
1176b5be	112	struct regmap *regmap;
c6c19332	113
c26448c4 GK	114	struct irq_chip irq_chip;
	115	struct mutex irq_lock;
	116	int irq_base;
	117	u32 irq_en;
c26448c4	118	u8 mask_reg[5];
c6c19332 MR	119	};
c6c19332 MR	120
1176b5be	121	static inline struct tps6586x dev_to_tps6586x(struct device dev)
c6c19332	122	{
1176b5be	123	return i2c_get_clientdata(to_i2c_client(dev));
c6c19332 MR	124	}
	125
	126	int tps6586x_write(struct device *dev, int reg, uint8_t val)
	127	{
1176b5be LD	128	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
	129
	130	return regmap_write(tps6586x->regmap, reg, val);
c6c19332 MR	131	}
	132	EXPORT_SYMBOL_GPL(tps6586x_write);
	133
	134	int tps6586x_writes(struct device dev, int reg, int len, uint8_t val)
	135	{
1176b5be LD	136	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
	137
	138	return regmap_bulk_write(tps6586x->regmap, reg, val, len);
c6c19332 MR	139	}
	140	EXPORT_SYMBOL_GPL(tps6586x_writes);
	141
	142	int tps6586x_read(struct device dev, int reg, uint8_t val)
	143	{
1176b5be LD	144	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
	145	unsigned int rval;
	146	int ret;
	147
	148	ret = regmap_read(tps6586x->regmap, reg, &rval);
	149	if (!ret)
	150	*val = rval;
	151	return ret;
c6c19332 MR	152	}
	153	EXPORT_SYMBOL_GPL(tps6586x_read);
	154
	155	int tps6586x_reads(struct device dev, int reg, int len, uint8_t val)
	156	{
1176b5be LD	157	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
	158
	159	return regmap_bulk_read(tps6586x->regmap, reg, val, len);
c6c19332 MR	160	}
	161	EXPORT_SYMBOL_GPL(tps6586x_reads);
	162
	163	int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
	164	{
1176b5be	165	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
c6c19332	166
1176b5be	167	return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
c6c19332 MR	168	}
	169	EXPORT_SYMBOL_GPL(tps6586x_set_bits);
	170
	171	int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
	172	{
1176b5be	173	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
c6c19332	174
1176b5be	175	return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
c6c19332 MR	176	}
	177	EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
	178
	179	int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
	180	{
1176b5be	181	struct tps6586x *tps6586x = dev_to_tps6586x(dev);
c6c19332	182
1176b5be	183	return regmap_update_bits(tps6586x->regmap, reg, mask, val);
c6c19332 MR	184	}
	185	EXPORT_SYMBOL_GPL(tps6586x_update);
	186
c6c19332 MR	187	static int __remove_subdev(struct device dev, void unused)
	188	{
	189	platform_device_unregister(to_platform_device(dev));
	190	return 0;
	191	}
	192
	193	static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
	194	{
	195	return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
	196	}
	197
96e824bd	198	static void tps6586x_irq_lock(struct irq_data *data)
c26448c4	199	{
96e824bd	200	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
c26448c4 GK	201
	202	mutex_lock(&tps6586x->irq_lock);
	203	}
	204
96e824bd	205	static void tps6586x_irq_enable(struct irq_data *irq_data)
c26448c4	206	{
96e824bd MB	207	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
96e824bd MB	208	unsigned int __irq = irq_data->irq - tps6586x->irq_base;
c26448c4 GK	209	const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
	210
	211	tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
	212	tps6586x->irq_en \|= (1 << __irq);
	213	}
	214
96e824bd	215	static void tps6586x_irq_disable(struct irq_data *irq_data)
c26448c4	216	{
96e824bd	217	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
c26448c4	218
96e824bd	219	unsigned int __irq = irq_data->irq - tps6586x->irq_base;
c26448c4 GK	220	const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
	221
	222	tps6586x->mask_reg[data->mask_reg] \|= data->mask_mask;
	223	tps6586x->irq_en &= ~(1 << __irq);
	224	}
	225
96e824bd	226	static void tps6586x_irq_sync_unlock(struct irq_data *data)
c26448c4	227	{
96e824bd	228	struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
c26448c4 GK	229	int i;
	230
	231	for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
75edd5af LD	232	int ret;
	233	ret = tps6586x_write(tps6586x->dev,
	234	TPS6586X_INT_MASK1 + i,
	235	tps6586x->mask_reg[i]);
	236	WARN_ON(ret);
c26448c4 GK	237	}
	238
	239	mutex_unlock(&tps6586x->irq_lock);
	240	}
	241
	242	static irqreturn_t tps6586x_irq(int irq, void *data)
	243	{
	244	struct tps6586x *tps6586x = data;
	245	u32 acks;
	246	int ret = 0;
	247
	248	ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
	249	sizeof(acks), (uint8_t *)&acks);
	250
	251	if (ret < 0) {
	252	dev_err(tps6586x->dev, "failed to read interrupt status\n");
	253	return IRQ_NONE;
	254	}
	255
	256	acks = le32_to_cpu(acks);
	257
	258	while (acks) {
	259	int i = __ffs(acks);
	260
	261	if (tps6586x->irq_en & (1 << i))
	262	handle_nested_irq(tps6586x->irq_base + i);
	263
	264	acks &= ~(1 << i);
	265	}
	266
	267	return IRQ_HANDLED;
	268	}
	269
f791be49	270	static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
c26448c4 GK	271	int irq_base)
	272	{
	273	int i, ret;
	274	u8 tmp[4];
	275
	276	if (!irq_base) {
	277	dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n");
	278	return -EINVAL;
	279	}
	280
	281	mutex_init(&tps6586x->irq_lock);
	282	for (i = 0; i < 5; i++) {
c26448c4 GK	283	tps6586x->mask_reg[i] = 0xff;
	284	tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
	285	}
	286
	287	tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
	288
	289	tps6586x->irq_base = irq_base;
	290
	291	tps6586x->irq_chip.name = "tps6586x";
96e824bd MB	292	tps6586x->irq_chip.irq_enable = tps6586x_irq_enable;
	293	tps6586x->irq_chip.irq_disable = tps6586x_irq_disable;
	294	tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock;
	295	tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock;
c26448c4 GK	296
	297	for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) {
	298	int __irq = i + tps6586x->irq_base;
d5bb1221 TG	299	irq_set_chip_data(__irq, tps6586x);
d5bb1221 TG	300	irq_set_chip_and_handler(__irq, &tps6586x->irq_chip,
c26448c4	301	handle_simple_irq);
d5bb1221	302	irq_set_nested_thread(__irq, 1);
c26448c4 GK	303	#ifdef CONFIG_ARM
	304	set_irq_flags(__irq, IRQF_VALID);
	305	#endif
	306	}
	307
	308	ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
	309	"tps6586x", tps6586x);
	310
	311	if (!ret) {
	312	device_init_wakeup(tps6586x->dev, 1);
	313	enable_irq_wake(irq);
	314	}
	315
	316	return ret;
	317	}
	318
f791be49	319	static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
c6c19332 MR	320	struct tps6586x_platform_data *pdata)
	321	{
	322	struct tps6586x_subdev_info *subdev;
	323	struct platform_device *pdev;
	324	int i, ret = 0;
	325
	326	for (i = 0; i < pdata->num_subdevs; i++) {
	327	subdev = &pdata->subdevs[i];
	328
	329	pdev = platform_device_alloc(subdev->name, subdev->id);
929980ab AL	330	if (!pdev) {
	331	ret = -ENOMEM;
	332	goto failed;
	333	}
c6c19332 MR	334
	335	pdev->dev.parent = tps6586x->dev;
	336	pdev->dev.platform_data = subdev->platform_data;
62f6b087	337	pdev->dev.of_node = subdev->of_node;
c6c19332 MR	338
c6c19332 MR	339	ret = platform_device_add(pdev);
929980ab AL	340	if (ret) {
929980ab AL	341	platform_device_put(pdev);
c6c19332	342	goto failed;
929980ab	343	}
c6c19332 MR	344	}
	345	return 0;
	346
	347	failed:
	348	tps6586x_remove_subdevs(tps6586x);
	349	return ret;
	350	}
	351
62f6b087 TR	352	#ifdef CONFIG_OF
62f6b087 TR	353	static struct of_regulator_match tps6586x_matches[] = {
9394b80c	354	{ .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS },
62f6b087 TR	355	{ .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
	356	{ .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
	357	{ .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
	358	{ .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
	359	{ .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
	360	{ .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
	361	{ .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
	362	{ .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
	363	{ .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
	364	{ .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
	365	{ .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
	366	{ .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
	367	{ .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
	368	{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
	369	};
	370
	371	static struct tps6586x_platform_data tps6586x_parse_dt(struct i2c_client client)
	372	{
	373	const unsigned int num = ARRAY_SIZE(tps6586x_matches);
	374	struct device_node *np = client->dev.of_node;
	375	struct tps6586x_platform_data *pdata;
	376	struct tps6586x_subdev_info *devs;
	377	struct device_node *regs;
9394b80c	378	const char *sys_rail_name = NULL;
62f6b087 TR	379	unsigned int count;
	380	unsigned int i, j;
	381	int err;
	382
	383	regs = of_find_node_by_name(np, "regulators");
	384	if (!regs)
	385	return NULL;
	386
	387	err = of_regulator_match(&client->dev, regs, tps6586x_matches, num);
	388	if (err < 0) {
	389	of_node_put(regs);
	390	return NULL;
	391	}
	392
	393	of_node_put(regs);
	394	count = err;
	395
	396	devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL);
	397	if (!devs)
	398	return NULL;
	399
	400	for (i = 0, j = 0; i < num && j < count; i++) {
9394b80c LD	401	struct regulator_init_data *reg_idata;
9394b80c LD	402
62f6b087 TR	403	if (!tps6586x_matches[i].init_data)
	404	continue;
	405
9394b80c	406	reg_idata = tps6586x_matches[i].init_data;
62f6b087 TR	407	devs[j].name = "tps6586x-regulator";
	408	devs[j].platform_data = tps6586x_matches[i].init_data;
	409	devs[j].id = (int)tps6586x_matches[i].driver_data;
9394b80c LD	410	if (devs[j].id == TPS6586X_ID_SYS)
	411	sys_rail_name = reg_idata->constraints.name;
	412
	413	if ((devs[j].id == TPS6586X_ID_LDO_5) \|\|
	414	(devs[j].id == TPS6586X_ID_LDO_RTC))
	415	reg_idata->supply_regulator = sys_rail_name;
	416
62f6b087 TR	417	devs[j].of_node = tps6586x_matches[i].of_node;
	418	j++;
	419	}
	420
	421	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
	422	if (!pdata)
	423	return NULL;
	424
	425	pdata->num_subdevs = count;
	426	pdata->subdevs = devs;
	427	pdata->gpio_base = -1;
	428	pdata->irq_base = -1;
004c15a6	429	pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
62f6b087 TR	430
	431	return pdata;
	432	}
	433
	434	static struct of_device_id tps6586x_of_match[] = {
	435	{ .compatible = "ti,tps6586x", },
	436	{ },
	437	};
	438	#else
	439	static struct tps6586x_platform_data tps6586x_parse_dt(struct i2c_client client)
	440	{
	441	return NULL;
	442	}
	443	#endif
	444
75edd5af LD	445	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	446	{
	447	/* Cache all interrupt mask register */
	448	if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
	449	return false;
	450
	451	return true;
	452	}
	453
1176b5be LD	454	static const struct regmap_config tps6586x_regmap_config = {
	455	.reg_bits = 8,
	456	.val_bits = 8,
	457	.max_register = TPS6586X_MAX_REGISTER - 1,
75edd5af LD	458	.volatile_reg = is_volatile_reg,
75edd5af LD	459	.cache_type = REGCACHE_RBTREE,
1176b5be LD	460	};
1176b5be LD	461
004c15a6 BH	462	static struct device *tps6586x_dev;
	463	static void tps6586x_power_off(void)
	464	{
	465	if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
	466	return;
	467
	468	tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
	469	}
	470
f791be49	471	static int tps6586x_i2c_probe(struct i2c_client *client,
c6c19332 MR	472	const struct i2c_device_id *id)
	473	{
	474	struct tps6586x_platform_data *pdata = client->dev.platform_data;
	475	struct tps6586x *tps6586x;
	476	int ret;
	477
62f6b087 TR	478	if (!pdata && client->dev.of_node)
	479	pdata = tps6586x_parse_dt(client);
	480
c6c19332 MR	481	if (!pdata) {
	482	dev_err(&client->dev, "tps6586x requires platform data\n");
	483	return -ENOTSUPP;
	484	}
	485
	486	ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
	487	if (ret < 0) {
	488	dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
	489	return -EIO;
	490	}
	491
4d1cdbf6	492	dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);
c6c19332	493
b6719412 LD	494	tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
	495	if (tps6586x == NULL) {
	496	dev_err(&client->dev, "memory for tps6586x alloc failed\n");
c6c19332	497	return -ENOMEM;
b6719412	498	}
c6c19332 MR	499
	500	tps6586x->client = client;
	501	tps6586x->dev = &client->dev;
	502	i2c_set_clientdata(client, tps6586x);
	503
1176b5be LD	504	tps6586x->regmap = devm_regmap_init_i2c(client,
	505	&tps6586x_regmap_config);
	506	if (IS_ERR(tps6586x->regmap)) {
	507	ret = PTR_ERR(tps6586x->regmap);
	508	dev_err(&client->dev, "regmap init failed: %d\n", ret);
	509	return ret;
	510	}
	511
c6c19332	512
c26448c4 GK	513	if (client->irq) {
	514	ret = tps6586x_irq_init(tps6586x, client->irq,
	515	pdata->irq_base);
	516	if (ret) {
	517	dev_err(&client->dev, "IRQ init failed: %d\n", ret);
b6719412	518	return ret;
c26448c4 GK	519	}
	520	}
	521
7a7487cb	522	ret = mfd_add_devices(tps6586x->dev, -1,
0848c94f MB	523	tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
0848c94f MB	524	NULL, 0, NULL);
7a7487cb LD	525	if (ret < 0) {
	526	dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
	527	goto err_mfd_add;
6f9f13bf VP	528	}
6f9f13bf VP	529
c6c19332 MR	530	ret = tps6586x_add_subdevs(tps6586x, pdata);
	531	if (ret) {
	532	dev_err(&client->dev, "add devices failed: %d\n", ret);
	533	goto err_add_devs;
	534	}
	535
004c15a6 BH	536	if (pdata->pm_off && !pm_power_off) {
	537	tps6586x_dev = &client->dev;
	538	pm_power_off = tps6586x_power_off;
	539	}
	540
c6c19332 MR	541	return 0;
	542
	543	err_add_devs:
7a7487cb LD	544	mfd_remove_devices(tps6586x->dev);
7a7487cb LD	545	err_mfd_add:
c26448c4 GK	546	if (client->irq)
c26448c4 GK	547	free_irq(client->irq, tps6586x);
c6c19332 MR	548	return ret;
	549	}
	550
	551	static int __devexit tps6586x_i2c_remove(struct i2c_client *client)
	552	{
4b751cf5	553	struct tps6586x *tps6586x = i2c_get_clientdata(client);
4b751cf5	554
7a7487cb LD	555	tps6586x_remove_subdevs(tps6586x);
7a7487cb LD	556	mfd_remove_devices(tps6586x->dev);
c26448c4 GK	557	if (client->irq)
c26448c4 GK	558	free_irq(client->irq, tps6586x);
c6c19332 MR	559	return 0;
	560	}
	561
	562	static const struct i2c_device_id tps6586x_id_table[] = {
	563	{ "tps6586x", 0 },
	564	{ },
	565	};
	566	MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
	567
	568	static struct i2c_driver tps6586x_driver = {
	569	.driver = {
	570	.name = "tps6586x",
	571	.owner = THIS_MODULE,
62f6b087	572	.of_match_table = of_match_ptr(tps6586x_of_match),
c6c19332 MR	573	},
c6c19332 MR	574	.probe = tps6586x_i2c_probe,
84449216	575	.remove = tps6586x_i2c_remove,
c6c19332 MR	576	.id_table = tps6586x_id_table,
	577	};
	578
	579	static int __init tps6586x_init(void)
	580	{
	581	return i2c_add_driver(&tps6586x_driver);
	582	}
	583	subsys_initcall(tps6586x_init);
	584
	585	static void __exit tps6586x_exit(void)
	586	{
	587	i2c_del_driver(&tps6586x_driver);
	588	}
	589	module_exit(tps6586x_exit);
	590
	591	MODULE_DESCRIPTION("TPS6586X core driver");
	592	MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
	593	MODULE_LICENSE("GPL");