[linux-2.6-block.git] / drivers / mfd / tps65910.c

/*
 * tps65910.c  --  TI TPS6591x
 *
 * Copyright 2010 Texas Instruments Inc.
 *
 * Author: Graeme Gregory <gg@slimlogic.co.uk>
 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
 *
 *  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/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/mfd/core.h>
#include <linux/regmap.h>
#include <linux/mfd/tps65910.h>
#include <linux/of.h>
#include <linux/of_device.h>

static struct resource rtc_resources[] = {
	{
		.start  = TPS65910_IRQ_RTC_ALARM,
		.end    = TPS65910_IRQ_RTC_ALARM,
		.flags  = IORESOURCE_IRQ,
	}
};

static const struct mfd_cell tps65910s[] = {
	{
		.name = "tps65910-gpio",
	},
	{
		.name = "tps65910-pmic",
	},
	{
		.name = "tps65910-rtc",
		.num_resources = ARRAY_SIZE(rtc_resources),
		.resources = &rtc_resources[0],
	},
	{
		.name = "tps65910-power",
	},
};


static const struct regmap_irq tps65911_irqs[] = {
	/* INT_STS */
	[TPS65911_IRQ_PWRHOLD_F] = {
		.mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_VBAT_VMHI] = {
		.mask = INT_MSK_VMBHI_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_PWRON] = {
		.mask = INT_MSK_PWRON_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_PWRON_LP] = {
		.mask = INT_MSK_PWRON_LP_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_PWRHOLD_R] = {
		.mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_HOTDIE] = {
		.mask = INT_MSK_HOTDIE_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_RTC_ALARM] = {
		.mask = INT_MSK_RTC_ALARM_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65911_IRQ_RTC_PERIOD] = {
		.mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[TPS65911_IRQ_GPIO0_R] = {
		.mask = INT_MSK2_GPIO0_R_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO0_F] = {
		.mask = INT_MSK2_GPIO0_F_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO1_R] = {
		.mask = INT_MSK2_GPIO1_R_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO1_F] = {
		.mask = INT_MSK2_GPIO1_F_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO2_R] = {
		.mask = INT_MSK2_GPIO2_R_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO2_F] = {
		.mask = INT_MSK2_GPIO2_F_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO3_R] = {
		.mask = INT_MSK2_GPIO3_R_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65911_IRQ_GPIO3_F] = {
		.mask = INT_MSK2_GPIO3_F_IT_MSK_MASK,
		.reg_offset = 1,
	},

	/* INT_STS2 */
	[TPS65911_IRQ_GPIO4_R] = {
		.mask = INT_MSK3_GPIO4_R_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_GPIO4_F] = {
		.mask = INT_MSK3_GPIO4_F_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_GPIO5_R] = {
		.mask = INT_MSK3_GPIO5_R_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_GPIO5_F] = {
		.mask = INT_MSK3_GPIO5_F_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_WTCHDG] = {
		.mask = INT_MSK3_WTCHDG_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_VMBCH2_H] = {
		.mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_VMBCH2_L] = {
		.mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK,
		.reg_offset = 2,
	},
	[TPS65911_IRQ_PWRDN] = {
		.mask = INT_MSK3_PWRDN_IT_MSK_MASK,
		.reg_offset = 2,
	},
};

static const struct regmap_irq tps65910_irqs[] = {
	/* INT_STS */
	[TPS65910_IRQ_VBAT_VMBDCH] = {
		.mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_VBAT_VMHI] = {
		.mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_PWRON] = {
		.mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_PWRON_LP] = {
		.mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_PWRHOLD] = {
		.mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_HOTDIE] = {
		.mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_RTC_ALARM] = {
		.mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK,
		.reg_offset = 0,
	},
	[TPS65910_IRQ_RTC_PERIOD] = {
		.mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK,
		.reg_offset = 0,
	},

	/* INT_STS2 */
	[TPS65910_IRQ_GPIO_R] = {
		.mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK,
		.reg_offset = 1,
	},
	[TPS65910_IRQ_GPIO_F] = {
		.mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK,
		.reg_offset = 1,
	},
};

static struct regmap_irq_chip tps65911_irq_chip = {
	.name = "tps65910",
	.irqs = tps65911_irqs,
	.num_irqs = ARRAY_SIZE(tps65911_irqs),
	.num_regs = 3,
	.irq_reg_stride = 2,
	.status_base = TPS65910_INT_STS,
	.mask_base = TPS65910_INT_MSK,
	.ack_base = TPS65910_INT_STS,
};

static struct regmap_irq_chip tps65910_irq_chip = {
	.name = "tps65910",
	.irqs = tps65910_irqs,
	.num_irqs = ARRAY_SIZE(tps65910_irqs),
	.num_regs = 2,
	.irq_reg_stride = 2,
	.status_base = TPS65910_INT_STS,
	.mask_base = TPS65910_INT_MSK,
	.ack_base = TPS65910_INT_STS,
};

static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
		    struct tps65910_platform_data *pdata)
{
	int ret = 0;
	static struct regmap_irq_chip *tps6591x_irqs_chip;

	if (!irq) {
		dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
		return -EINVAL;
	}

	if (!pdata) {
		dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
		return -EINVAL;
	}

	switch (tps65910_chip_id(tps65910)) {
	case TPS65910:
		tps6591x_irqs_chip = &tps65910_irq_chip;
		break;
	case TPS65911:
		tps6591x_irqs_chip = &tps65911_irq_chip;
		break;
	}

	tps65910->chip_irq = irq;
	ret = regmap_add_irq_chip(tps65910->regmap, tps65910->chip_irq,
		IRQF_ONESHOT, pdata->irq_base,
		tps6591x_irqs_chip, &tps65910->irq_data);
	if (ret < 0) {
		dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
		tps65910->chip_irq = 0;
	}
	return ret;
}

static int tps65910_irq_exit(struct tps65910 *tps65910)
{
	if (tps65910->chip_irq > 0)
		regmap_del_irq_chip(tps65910->chip_irq, tps65910->irq_data);
	return 0;
}

static bool is_volatile_reg(struct device *dev, unsigned int reg)
{
	struct tps65910 *tps65910 = dev_get_drvdata(dev);

	/*
	 * Caching all regulator registers.
	 * All regualator register address range is same for
	 * TPS65910 and TPS65911
	 */
	if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
		/* Check for non-existing register */
		if (tps65910_chip_id(tps65910) == TPS65910)
			if ((reg == TPS65911_VDDCTRL_OP) ||
				(reg == TPS65911_VDDCTRL_SR))
				return true;
		return false;
	}
	return true;
}

static const struct regmap_config tps65910_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.volatile_reg = is_volatile_reg,
	.max_register = TPS65910_MAX_REGISTER - 1,
	.cache_type = REGCACHE_RBTREE,
};

static int tps65910_ck32k_init(struct tps65910 *tps65910,
					struct tps65910_board *pmic_pdata)
{
	int ret;

	if (!pmic_pdata->en_ck32k_xtal)
		return 0;

	ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
						DEVCTRL_CK32K_CTRL_MASK);
	if (ret < 0) {
		dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
		return ret;
	}

	return 0;
}

static int tps65910_sleepinit(struct tps65910 *tps65910,
		struct tps65910_board *pmic_pdata)
{
	struct device *dev = NULL;
	int ret = 0;

	dev = tps65910->dev;

	if (!pmic_pdata->en_dev_slp)
		return 0;

	/* enabling SLEEP device state */
	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
				DEVCTRL_DEV_SLP_MASK);
	if (ret < 0) {
		dev_err(dev, "set dev_slp failed: %d\n", ret);
		goto err_sleep_init;
	}

	/* Return if there is no sleep keepon data. */
	if (!pmic_pdata->slp_keepon)
		return 0;

	if (pmic_pdata->slp_keepon->therm_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set therm_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	if (pmic_pdata->slp_keepon->i2chs_keepon) {
		ret = tps65910_reg_set_bits(tps65910,
				TPS65910_SLEEP_KEEP_RES_ON,
				SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
		if (ret < 0) {
			dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
			goto disable_dev_slp;
		}
	}

	return 0;

disable_dev_slp:
	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
				DEVCTRL_DEV_SLP_MASK);

err_sleep_init:
	return ret;
}

#ifdef CONFIG_OF
static const struct of_device_id tps65910_of_match[] = {
	{ .compatible = "ti,tps65910", .data = (void *)TPS65910},
	{ .compatible = "ti,tps65911", .data = (void *)TPS65911},
	{ },
};
MODULE_DEVICE_TABLE(of, tps65910_of_match);

static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
						unsigned long *chip_id)
{
	struct device_node *np = client->dev.of_node;
	struct tps65910_board *board_info;
	unsigned int prop;
	const struct of_device_id *match;
	int ret = 0;

	match = of_match_device(tps65910_of_match, &client->dev);
	if (!match) {
		dev_err(&client->dev, "Failed to find matching dt id\n");
		return NULL;
	}

	*chip_id  = (unsigned long)match->data;

	board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
			GFP_KERNEL);
	if (!board_info) {
		dev_err(&client->dev, "Failed to allocate pdata\n");
		return NULL;
	}

	ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
	if (!ret)
		board_info->vmbch_threshold = prop;

	ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
	if (!ret)
		board_info->vmbch2_threshold = prop;

	prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
	board_info->en_ck32k_xtal = prop;

	board_info->irq = client->irq;
	board_info->irq_base = -1;
	board_info->pm_off = of_property_read_bool(np,
			"ti,system-power-controller");

	return board_info;
}
#else
static inline
struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
					 unsigned long *chip_id)
{
	return NULL;
}
#endif

static struct i2c_client *tps65910_i2c_client;
static void tps65910_power_off(void)
{
	struct tps65910 *tps65910;

	tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);

	if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
			DEVCTRL_PWR_OFF_MASK) < 0)
		return;

	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
			DEVCTRL_DEV_ON_MASK);
}

static int tps65910_i2c_probe(struct i2c_client *i2c,
			      const struct i2c_device_id *id)
{
	struct tps65910 *tps65910;
	struct tps65910_board *pmic_plat_data;
	struct tps65910_board *of_pmic_plat_data = NULL;
	struct tps65910_platform_data *init_data;
	unsigned long chip_id = id->driver_data;
	int ret = 0;

	pmic_plat_data = dev_get_platdata(&i2c->dev);

	if (!pmic_plat_data && i2c->dev.of_node) {
		pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
		of_pmic_plat_data = pmic_plat_data;
	}

	if (!pmic_plat_data)
		return -EINVAL;

	init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
	if (init_data == NULL)
		return -ENOMEM;

	tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
	if (tps65910 == NULL)
		return -ENOMEM;

	tps65910->of_plat_data = of_pmic_plat_data;
	i2c_set_clientdata(i2c, tps65910);
	tps65910->dev = &i2c->dev;
	tps65910->i2c_client = i2c;
	tps65910->id = chip_id;

	/* Work around silicon erratum SWCZ010: the tps65910 may miss the
	 * first I2C transfer. So issue a dummy transfer before the first
	 * real transfer.
	 */
	i2c_master_send(i2c, "", 1);
	tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
	if (IS_ERR(tps65910->regmap)) {
		ret = PTR_ERR(tps65910->regmap);
		dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
		return ret;
	}

	init_data->irq = pmic_plat_data->irq;
	init_data->irq_base = pmic_plat_data->irq_base;

	tps65910_irq_init(tps65910, init_data->irq, init_data);
	tps65910_ck32k_init(tps65910, pmic_plat_data);
	tps65910_sleepinit(tps65910, pmic_plat_data);

	if (pmic_plat_data->pm_off && !pm_power_off) {
		tps65910_i2c_client = i2c;
		pm_power_off = tps65910_power_off;
	}

	ret = mfd_add_devices(tps65910->dev, -1,
			      tps65910s, ARRAY_SIZE(tps65910s),
			      NULL, 0,
			      regmap_irq_get_domain(tps65910->irq_data));
	if (ret < 0) {
		dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
		tps65910_irq_exit(tps65910);
		return ret;
	}

	return ret;
}

static int tps65910_i2c_remove(struct i2c_client *i2c)
{
	struct tps65910 *tps65910 = i2c_get_clientdata(i2c);

	tps65910_irq_exit(tps65910);
	mfd_remove_devices(tps65910->dev);

	return 0;
}

static const struct i2c_device_id tps65910_i2c_id[] = {
       { "tps65910", TPS65910 },
       { "tps65911", TPS65911 },
       { }
};
MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);


static struct i2c_driver tps65910_i2c_driver = {
	.driver = {
		   .name = "tps65910",
		   .of_match_table = of_match_ptr(tps65910_of_match),
	},
	.probe = tps65910_i2c_probe,
	.remove = tps65910_i2c_remove,
	.id_table = tps65910_i2c_id,
};

static int __init tps65910_i2c_init(void)
{
	return i2c_add_driver(&tps65910_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(tps65910_i2c_init);

static void __exit tps65910_i2c_exit(void)
{
	i2c_del_driver(&tps65910_i2c_driver);
}
module_exit(tps65910_i2c_exit);

MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
27c6750e GG	1	/*
	2	* tps65910.c -- TI TPS6591x
	3	*
	4	* Copyright 2010 Texas Instruments Inc.
	5	*
	6	* Author: Graeme Gregory <gg@slimlogic.co.uk>
	7	* Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	*/
	15
	16	#include <linux/module.h>
	17	#include <linux/moduleparam.h>
	18	#include <linux/init.h>
dc9913a0	19	#include <linux/err.h>
27c6750e GG	20	#include <linux/slab.h>
27c6750e GG	21	#include <linux/i2c.h>
4aab3fad LD	22	#include <linux/interrupt.h>
	23	#include <linux/irq.h>
	24	#include <linux/irqdomain.h>
27c6750e	25	#include <linux/mfd/core.h>
dc9913a0	26	#include <linux/regmap.h>
27c6750e	27	#include <linux/mfd/tps65910.h>
1fead3f3	28	#include <linux/of.h>
cd4209ce	29	#include <linux/of_device.h>
27c6750e	30
5863eabb VB	31	static struct resource rtc_resources[] = {
	32	{
	33	.start = TPS65910_IRQ_RTC_ALARM,
	34	.end = TPS65910_IRQ_RTC_ALARM,
	35	.flags = IORESOURCE_IRQ,
	36	}
	37	};
	38
30fe2b5b	39	static const struct mfd_cell tps65910s[] = {
32df986e LD	40	{
	41	.name = "tps65910-gpio",
	42	},
27c6750e GG	43	{
	44	.name = "tps65910-pmic",
	45	},
	46	{
	47	.name = "tps65910-rtc",
5863eabb VB	48	.num_resources = ARRAY_SIZE(rtc_resources),
5863eabb VB	49	.resources = &rtc_resources[0],
27c6750e GG	50	},
	51	{
	52	.name = "tps65910-power",
	53	},
	54	};
	55
	56
4aab3fad LD	57	static const struct regmap_irq tps65911_irqs[] = {
	58	/* INT_STS */
	59	[TPS65911_IRQ_PWRHOLD_F] = {
	60	.mask = INT_MSK_PWRHOLD_F_IT_MSK_MASK,
	61	.reg_offset = 0,
	62	},
	63	[TPS65911_IRQ_VBAT_VMHI] = {
	64	.mask = INT_MSK_VMBHI_IT_MSK_MASK,
	65	.reg_offset = 0,
	66	},
	67	[TPS65911_IRQ_PWRON] = {
	68	.mask = INT_MSK_PWRON_IT_MSK_MASK,
	69	.reg_offset = 0,
	70	},
	71	[TPS65911_IRQ_PWRON_LP] = {
	72	.mask = INT_MSK_PWRON_LP_IT_MSK_MASK,
	73	.reg_offset = 0,
	74	},
	75	[TPS65911_IRQ_PWRHOLD_R] = {
	76	.mask = INT_MSK_PWRHOLD_R_IT_MSK_MASK,
	77	.reg_offset = 0,
	78	},
	79	[TPS65911_IRQ_HOTDIE] = {
	80	.mask = INT_MSK_HOTDIE_IT_MSK_MASK,
	81	.reg_offset = 0,
	82	},
	83	[TPS65911_IRQ_RTC_ALARM] = {
	84	.mask = INT_MSK_RTC_ALARM_IT_MSK_MASK,
	85	.reg_offset = 0,
	86	},
	87	[TPS65911_IRQ_RTC_PERIOD] = {
	88	.mask = INT_MSK_RTC_PERIOD_IT_MSK_MASK,
	89	.reg_offset = 0,
	90	},
	91
	92	/* INT_STS2 */
	93	[TPS65911_IRQ_GPIO0_R] = {
	94	.mask = INT_MSK2_GPIO0_R_IT_MSK_MASK,
	95	.reg_offset = 1,
	96	},
	97	[TPS65911_IRQ_GPIO0_F] = {
	98	.mask = INT_MSK2_GPIO0_F_IT_MSK_MASK,
	99	.reg_offset = 1,
	100	},
	101	[TPS65911_IRQ_GPIO1_R] = {
	102	.mask = INT_MSK2_GPIO1_R_IT_MSK_MASK,
	103	.reg_offset = 1,
	104	},
	105	[TPS65911_IRQ_GPIO1_F] = {
	106	.mask = INT_MSK2_GPIO1_F_IT_MSK_MASK,
	107	.reg_offset = 1,
	108	},
	109	[TPS65911_IRQ_GPIO2_R] = {
	110	.mask = INT_MSK2_GPIO2_R_IT_MSK_MASK,
	111	.reg_offset = 1,
	112	},
	113	[TPS65911_IRQ_GPIO2_F] = {
	114	.mask = INT_MSK2_GPIO2_F_IT_MSK_MASK,
	115	.reg_offset = 1,
	116	},
	117	[TPS65911_IRQ_GPIO3_R] = {
	118	.mask = INT_MSK2_GPIO3_R_IT_MSK_MASK,
	119	.reg_offset = 1,
	120	},
121	[TPS65911_IRQ_GPIO3_F] = {
122	.mask = INT_MSK2_GPIO3_F_IT_MSK_MASK,
123	.reg_offset = 1,
124	},
125
126	/* INT_STS2 */
127	[TPS65911_IRQ_GPIO4_R] = {
128	.mask = INT_MSK3_GPIO4_R_IT_MSK_MASK,
129	.reg_offset = 2,
130	},
131	[TPS65911_IRQ_GPIO4_F] = {
132	.mask = INT_MSK3_GPIO4_F_IT_MSK_MASK,
133	.reg_offset = 2,
134	},
135	[TPS65911_IRQ_GPIO5_R] = {
136	.mask = INT_MSK3_GPIO5_R_IT_MSK_MASK,
137	.reg_offset = 2,
138	},
139	[TPS65911_IRQ_GPIO5_F] = {
140	.mask = INT_MSK3_GPIO5_F_IT_MSK_MASK,
141	.reg_offset = 2,
142	},
143	[TPS65911_IRQ_WTCHDG] = {
144	.mask = INT_MSK3_WTCHDG_IT_MSK_MASK,
145	.reg_offset = 2,
146	},
147	[TPS65911_IRQ_VMBCH2_H] = {
148	.mask = INT_MSK3_VMBCH2_H_IT_MSK_MASK,
149	.reg_offset = 2,
150	},
151	[TPS65911_IRQ_VMBCH2_L] = {
152	.mask = INT_MSK3_VMBCH2_L_IT_MSK_MASK,
153	.reg_offset = 2,
154	},
155	[TPS65911_IRQ_PWRDN] = {
156	.mask = INT_MSK3_PWRDN_IT_MSK_MASK,
157	.reg_offset = 2,
158	},
159	};
160
161	static const struct regmap_irq tps65910_irqs[] = {
162	/* INT_STS */
163	[TPS65910_IRQ_VBAT_VMBDCH] = {
164	.mask = TPS65910_INT_MSK_VMBDCH_IT_MSK_MASK,
165	.reg_offset = 0,
166	},
167	[TPS65910_IRQ_VBAT_VMHI] = {
168	.mask = TPS65910_INT_MSK_VMBHI_IT_MSK_MASK,
169	.reg_offset = 0,
170	},
171	[TPS65910_IRQ_PWRON] = {
172	.mask = TPS65910_INT_MSK_PWRON_IT_MSK_MASK,
173	.reg_offset = 0,
174	},
175	[TPS65910_IRQ_PWRON_LP] = {
176	.mask = TPS65910_INT_MSK_PWRON_LP_IT_MSK_MASK,
177	.reg_offset = 0,
178	},
179	[TPS65910_IRQ_PWRHOLD] = {
180	.mask = TPS65910_INT_MSK_PWRHOLD_IT_MSK_MASK,
181	.reg_offset = 0,
182	},
183	[TPS65910_IRQ_HOTDIE] = {
184	.mask = TPS65910_INT_MSK_HOTDIE_IT_MSK_MASK,
185	.reg_offset = 0,
186	},
187	[TPS65910_IRQ_RTC_ALARM] = {
188	.mask = TPS65910_INT_MSK_RTC_ALARM_IT_MSK_MASK,
189	.reg_offset = 0,
190	},
191	[TPS65910_IRQ_RTC_PERIOD] = {
192	.mask = TPS65910_INT_MSK_RTC_PERIOD_IT_MSK_MASK,
193	.reg_offset = 0,
194	},
195
196	/* INT_STS2 */
197	[TPS65910_IRQ_GPIO_R] = {
198	.mask = TPS65910_INT_MSK2_GPIO0_F_IT_MSK_MASK,
199	.reg_offset = 1,
200	},
201	[TPS65910_IRQ_GPIO_F] = {
202	.mask = TPS65910_INT_MSK2_GPIO0_R_IT_MSK_MASK,
203	.reg_offset = 1,
204	},
205	};
206
207	static struct regmap_irq_chip tps65911_irq_chip = {
208	.name = "tps65910",
209	.irqs = tps65911_irqs,
210	.num_irqs = ARRAY_SIZE(tps65911_irqs),
211	.num_regs = 3,
212	.irq_reg_stride = 2,
213	.status_base = TPS65910_INT_STS,
214	.mask_base = TPS65910_INT_MSK,
0582c0fa	215	.ack_base = TPS65910_INT_STS,
4aab3fad LD	216	};
	217
	218	static struct regmap_irq_chip tps65910_irq_chip = {
	219	.name = "tps65910",
	220	.irqs = tps65910_irqs,
	221	.num_irqs = ARRAY_SIZE(tps65910_irqs),
	222	.num_regs = 2,
	223	.irq_reg_stride = 2,
	224	.status_base = TPS65910_INT_STS,
	225	.mask_base = TPS65910_INT_MSK,
0582c0fa	226	.ack_base = TPS65910_INT_STS,
4aab3fad LD	227	};
	228
	229	static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
	230	struct tps65910_platform_data *pdata)
	231	{
	232	int ret = 0;
	233	static struct regmap_irq_chip *tps6591x_irqs_chip;
	234
	235	if (!irq) {
	236	dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
	237	return -EINVAL;
	238	}
	239
	240	if (!pdata) {
	241	dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
	242	return -EINVAL;
	243	}
	244
	245	switch (tps65910_chip_id(tps65910)) {
	246	case TPS65910:
	247	tps6591x_irqs_chip = &tps65910_irq_chip;
	248	break;
	249	case TPS65911:
	250	tps6591x_irqs_chip = &tps65911_irq_chip;
	251	break;
	252	}
	253
	254	tps65910->chip_irq = irq;
	255	ret = regmap_add_irq_chip(tps65910->regmap, tps65910->chip_irq,
	256	IRQF_ONESHOT, pdata->irq_base,
	257	tps6591x_irqs_chip, &tps65910->irq_data);
483e2dfd	258	if (ret < 0) {
4aab3fad	259	dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
483e2dfd KK	260	tps65910->chip_irq = 0;
483e2dfd KK	261	}
4aab3fad LD	262	return ret;
	263	}
	264
	265	static int tps65910_irq_exit(struct tps65910 *tps65910)
	266	{
	267	if (tps65910->chip_irq > 0)
	268	regmap_del_irq_chip(tps65910->chip_irq, tps65910->irq_data);
	269	return 0;
	270	}
	271
dc9913a0 LD	272	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	273	{
	274	struct tps65910 *tps65910 = dev_get_drvdata(dev);
	275
	276	/*
	277	* Caching all regulator registers.
	278	* All regualator register address range is same for
	279	* TPS65910 and TPS65911
	280	*/
	281	if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
	282	/* Check for non-existing register */
	283	if (tps65910_chip_id(tps65910) == TPS65910)
	284	if ((reg == TPS65911_VDDCTRL_OP) \|\|
	285	(reg == TPS65911_VDDCTRL_SR))
	286	return true;
	287	return false;
	288	}
	289	return true;
	290	}
	291
39ecb037	292	static const struct regmap_config tps65910_regmap_config = {
dc9913a0 LD	293	.reg_bits = 8,
	294	.val_bits = 8,
	295	.volatile_reg = is_volatile_reg,
3bf6bf9b	296	.max_register = TPS65910_MAX_REGISTER - 1,
dc9913a0 LD	297	.cache_type = REGCACHE_RBTREE,
	298	};
	299
f791be49	300	static int tps65910_ck32k_init(struct tps65910 *tps65910,
712db99d JH	301	struct tps65910_board *pmic_pdata)
712db99d JH	302	{
712db99d JH	303	int ret;
712db99d JH	304
d02e83cb JH	305	if (!pmic_pdata->en_ck32k_xtal)
	306	return 0;
	307
	308	ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
712db99d	309	DEVCTRL_CK32K_CTRL_MASK);
d02e83cb JH	310	if (ret < 0) {
	311	dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
	312	return ret;
712db99d JH	313	}
	314
	315	return 0;
	316	}
	317
f791be49	318	static int tps65910_sleepinit(struct tps65910 *tps65910,
201cf052 LD	319	struct tps65910_board *pmic_pdata)
	320	{
	321	struct device *dev = NULL;
	322	int ret = 0;
	323
	324	dev = tps65910->dev;
	325
	326	if (!pmic_pdata->en_dev_slp)
	327	return 0;
	328
	329	/* enabling SLEEP device state */
3f7e8275	330	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
201cf052 LD	331	DEVCTRL_DEV_SLP_MASK);
	332	if (ret < 0) {
	333	dev_err(dev, "set dev_slp failed: %d\n", ret);
	334	goto err_sleep_init;
	335	}
	336
	337	/* Return if there is no sleep keepon data. */
	338	if (!pmic_pdata->slp_keepon)
	339	return 0;
	340
	341	if (pmic_pdata->slp_keepon->therm_keepon) {
3f7e8275 RK	342	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	343	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	344	SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
	345	if (ret < 0) {
	346	dev_err(dev, "set therm_keepon failed: %d\n", ret);
	347	goto disable_dev_slp;
	348	}
	349	}
	350
	351	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
3f7e8275 RK	352	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	353	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	354	SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
	355	if (ret < 0) {
	356	dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
	357	goto disable_dev_slp;
	358	}
	359	}
	360
	361	if (pmic_pdata->slp_keepon->i2chs_keepon) {
3f7e8275 RK	362	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	363	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	364	SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
	365	if (ret < 0) {
	366	dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
	367	goto disable_dev_slp;
	368	}
	369	}
	370
	371	return 0;
	372
	373	disable_dev_slp:
3f7e8275 RK	374	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
3f7e8275 RK	375	DEVCTRL_DEV_SLP_MASK);
201cf052 LD	376
	377	err_sleep_init:
	378	return ret;
	379	}
	380
cd4209ce	381	#ifdef CONFIG_OF
c0dfbfe2	382	static const struct of_device_id tps65910_of_match[] = {
cd4209ce RK	383	{ .compatible = "ti,tps65910", .data = (void *)TPS65910},
	384	{ .compatible = "ti,tps65911", .data = (void *)TPS65911},
	385	{ },
	386	};
	387	MODULE_DEVICE_TABLE(of, tps65910_of_match);
	388
	389	static struct tps65910_board tps65910_parse_dt(struct i2c_client client,
01a0f4aa	390	unsigned long *chip_id)
cd4209ce RK	391	{
	392	struct device_node *np = client->dev.of_node;
	393	struct tps65910_board *board_info;
	394	unsigned int prop;
	395	const struct of_device_id *match;
cd4209ce	396	int ret = 0;
cd4209ce RK	397
	398	match = of_match_device(tps65910_of_match, &client->dev);
	399	if (!match) {
	400	dev_err(&client->dev, "Failed to find matching dt id\n");
	401	return NULL;
	402	}
	403
01a0f4aa	404	*chip_id = (unsigned long)match->data;
cd4209ce RK	405
	406	board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
	407	GFP_KERNEL);
	408	if (!board_info) {
	409	dev_err(&client->dev, "Failed to allocate pdata\n");
	410	return NULL;
	411	}
	412
	413	ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
	414	if (!ret)
	415	board_info->vmbch_threshold = prop;
cd4209ce RK	416
	417	ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
	418	if (!ret)
	419	board_info->vmbch2_threshold = prop;
cd4209ce	420
bcc1dd4c JH	421	prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
	422	board_info->en_ck32k_xtal = prop;
	423
cd4209ce RK	424	board_info->irq = client->irq;
cd4209ce RK	425	board_info->irq_base = -1;
b079fa72 BH	426	board_info->pm_off = of_property_read_bool(np,
b079fa72 BH	427	"ti,system-power-controller");
cd4209ce RK	428
	429	return board_info;
	430	}
	431	#else
7f65f74c SO	432	static inline
7f65f74c SO	433	struct tps65910_board tps65910_parse_dt(struct i2c_client client,
01a0f4aa	434	unsigned long *chip_id)
cd4209ce RK	435	{
	436	return NULL;
	437	}
	438	#endif
201cf052	439
b079fa72 BH	440	static struct i2c_client *tps65910_i2c_client;
	441	static void tps65910_power_off(void)
	442	{
	443	struct tps65910 *tps65910;
	444
	445	tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
	446
	447	if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
	448	DEVCTRL_PWR_OFF_MASK) < 0)
	449	return;
	450
	451	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
	452	DEVCTRL_DEV_ON_MASK);
	453	}
	454
f791be49	455	static int tps65910_i2c_probe(struct i2c_client *i2c,
01a0f4aa	456	const struct i2c_device_id *id)
27c6750e GG	457	{
27c6750e GG	458	struct tps65910 *tps65910;
2537df72	459	struct tps65910_board *pmic_plat_data;
cb8d8654	460	struct tps65910_board *of_pmic_plat_data = NULL;
e3471bdc	461	struct tps65910_platform_data *init_data;
01a0f4aa	462	unsigned long chip_id = id->driver_data;
27c6750e GG	463	int ret = 0;
27c6750e GG	464
2537df72	465	pmic_plat_data = dev_get_platdata(&i2c->dev);
cd4209ce	466
cb8d8654	467	if (!pmic_plat_data && i2c->dev.of_node) {
cd4209ce	468	pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
cb8d8654 LD	469	of_pmic_plat_data = pmic_plat_data;
cb8d8654 LD	470	}
cd4209ce	471
2537df72 GG	472	if (!pmic_plat_data)
	473	return -EINVAL;
	474
63fe7dee	475	init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
e3471bdc GG	476	if (init_data == NULL)
	477	return -ENOMEM;
	478
63fe7dee LD	479	tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
63fe7dee LD	480	if (tps65910 == NULL)
27c6750e GG	481	return -ENOMEM;
27c6750e GG	482
cb8d8654	483	tps65910->of_plat_data = of_pmic_plat_data;
27c6750e GG	484	i2c_set_clientdata(i2c, tps65910);
	485	tps65910->dev = &i2c->dev;
	486	tps65910->i2c_client = i2c;
cd4209ce	487	tps65910->id = chip_id;
27c6750e	488
be1c7700 AVEM	489	/* Work around silicon erratum SWCZ010: the tps65910 may miss the
	490	* first I2C transfer. So issue a dummy transfer before the first
	491	* real transfer.
	492	*/
	493	i2c_master_send(i2c, "", 1);
63fe7dee	494	tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
dc9913a0 LD	495	if (IS_ERR(tps65910->regmap)) {
	496	ret = PTR_ERR(tps65910->regmap);
	497	dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
63fe7dee	498	return ret;
dc9913a0 LD	499	}
dc9913a0 LD	500
b1224cd1	501	init_data->irq = pmic_plat_data->irq;
1773140f	502	init_data->irq_base = pmic_plat_data->irq_base;
b1224cd1	503
1e351a95	504	tps65910_irq_init(tps65910, init_data->irq, init_data);
d02e83cb	505	tps65910_ck32k_init(tps65910, pmic_plat_data);
201cf052 LD	506	tps65910_sleepinit(tps65910, pmic_plat_data);
201cf052 LD	507
b079fa72 BH	508	if (pmic_plat_data->pm_off && !pm_power_off) {
	509	tps65910_i2c_client = i2c;
	510	pm_power_off = tps65910_power_off;
	511	}
	512
10ecb80e LD	513	ret = mfd_add_devices(tps65910->dev, -1,
10ecb80e LD	514	tps65910s, ARRAY_SIZE(tps65910s),
17143e38 LD	515	NULL, 0,
17143e38 LD	516	regmap_irq_get_domain(tps65910->irq_data));
10ecb80e LD	517	if (ret < 0) {
10ecb80e LD	518	dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
742766aa	519	tps65910_irq_exit(tps65910);
10ecb80e LD	520	return ret;
	521	}
	522
27c6750e GG	523	return ret;
	524	}
	525
4740f73f	526	static int tps65910_i2c_remove(struct i2c_client *i2c)
27c6750e GG	527	{
	528	struct tps65910 *tps65910 = i2c_get_clientdata(i2c);
	529
ec2328c3	530	tps65910_irq_exit(tps65910);
1e351a95	531	mfd_remove_devices(tps65910->dev);
27c6750e GG	532
	533	return 0;
	534	}
	535
	536	static const struct i2c_device_id tps65910_i2c_id[] = {
79557056 JEC	537	{ "tps65910", TPS65910 },
79557056 JEC	538	{ "tps65911", TPS65911 },
27c6750e GG	539	{ }
	540	};
	541	MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
	542
	543
	544	static struct i2c_driver tps65910_i2c_driver = {
	545	.driver = {
	546	.name = "tps65910",
cd4209ce	547	.of_match_table = of_match_ptr(tps65910_of_match),
27c6750e GG	548	},
27c6750e GG	549	.probe = tps65910_i2c_probe,
84449216	550	.remove = tps65910_i2c_remove,
27c6750e GG	551	.id_table = tps65910_i2c_id,
	552	};
	553
	554	static int __init tps65910_i2c_init(void)
	555	{
	556	return i2c_add_driver(&tps65910_i2c_driver);
	557	}
	558	/* init early so consumer devices can complete system boot */
	559	subsys_initcall(tps65910_i2c_init);
	560
	561	static void __exit tps65910_i2c_exit(void)
	562	{
	563	i2c_del_driver(&tps65910_i2c_driver);
	564	}
	565	module_exit(tps65910_i2c_exit);
	566
	567	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
	568	MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
	569	MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
	570	MODULE_LICENSE("GPL");