[mirror_ubuntu-zesty-kernel.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 = devm_regmap_add_irq_chip(tps65910->dev, 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 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 = devm_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);
		return ret;
	}

	return ret;
}

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,
	.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;
6167c5bc LD	255	ret = devm_regmap_add_irq_chip(tps65910->dev, tps65910->regmap,
	256	tps65910->chip_irq,
	257	IRQF_ONESHOT, pdata->irq_base,
	258	tps6591x_irqs_chip, &tps65910->irq_data);
483e2dfd	259	if (ret < 0) {
4aab3fad	260	dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
483e2dfd KK	261	tps65910->chip_irq = 0;
483e2dfd KK	262	}
4aab3fad LD	263	return ret;
	264	}
	265
dc9913a0 LD	266	static bool is_volatile_reg(struct device *dev, unsigned int reg)
	267	{
	268	struct tps65910 *tps65910 = dev_get_drvdata(dev);
	269
	270	/*
	271	* Caching all regulator registers.
	272	* All regualator register address range is same for
	273	* TPS65910 and TPS65911
	274	*/
	275	if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
	276	/* Check for non-existing register */
	277	if (tps65910_chip_id(tps65910) == TPS65910)
	278	if ((reg == TPS65911_VDDCTRL_OP) \|\|
	279	(reg == TPS65911_VDDCTRL_SR))
	280	return true;
	281	return false;
	282	}
	283	return true;
	284	}
	285
39ecb037	286	static const struct regmap_config tps65910_regmap_config = {
dc9913a0 LD	287	.reg_bits = 8,
	288	.val_bits = 8,
	289	.volatile_reg = is_volatile_reg,
3bf6bf9b	290	.max_register = TPS65910_MAX_REGISTER - 1,
dc9913a0 LD	291	.cache_type = REGCACHE_RBTREE,
	292	};
	293
f791be49	294	static int tps65910_ck32k_init(struct tps65910 *tps65910,
712db99d JH	295	struct tps65910_board *pmic_pdata)
712db99d JH	296	{
712db99d JH	297	int ret;
712db99d JH	298
d02e83cb JH	299	if (!pmic_pdata->en_ck32k_xtal)
	300	return 0;
	301
	302	ret = tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
712db99d	303	DEVCTRL_CK32K_CTRL_MASK);
d02e83cb JH	304	if (ret < 0) {
	305	dev_err(tps65910->dev, "clear ck32k_ctrl failed: %d\n", ret);
	306	return ret;
712db99d JH	307	}
	308
	309	return 0;
	310	}
	311
f791be49	312	static int tps65910_sleepinit(struct tps65910 *tps65910,
201cf052 LD	313	struct tps65910_board *pmic_pdata)
	314	{
	315	struct device *dev = NULL;
	316	int ret = 0;
	317
	318	dev = tps65910->dev;
	319
	320	if (!pmic_pdata->en_dev_slp)
	321	return 0;
	322
	323	/* enabling SLEEP device state */
3f7e8275	324	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
201cf052 LD	325	DEVCTRL_DEV_SLP_MASK);
	326	if (ret < 0) {
	327	dev_err(dev, "set dev_slp failed: %d\n", ret);
	328	goto err_sleep_init;
	329	}
	330
	331	/* Return if there is no sleep keepon data. */
	332	if (!pmic_pdata->slp_keepon)
	333	return 0;
	334
	335	if (pmic_pdata->slp_keepon->therm_keepon) {
3f7e8275 RK	336	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	337	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	338	SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
	339	if (ret < 0) {
	340	dev_err(dev, "set therm_keepon failed: %d\n", ret);
	341	goto disable_dev_slp;
	342	}
	343	}
	344
	345	if (pmic_pdata->slp_keepon->clkout32k_keepon) {
3f7e8275 RK	346	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	347	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	348	SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
	349	if (ret < 0) {
	350	dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
	351	goto disable_dev_slp;
	352	}
	353	}
	354
	355	if (pmic_pdata->slp_keepon->i2chs_keepon) {
3f7e8275 RK	356	ret = tps65910_reg_set_bits(tps65910,
3f7e8275 RK	357	TPS65910_SLEEP_KEEP_RES_ON,
201cf052 LD	358	SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
	359	if (ret < 0) {
	360	dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
	361	goto disable_dev_slp;
	362	}
	363	}
	364
	365	return 0;
	366
	367	disable_dev_slp:
3f7e8275 RK	368	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
3f7e8275 RK	369	DEVCTRL_DEV_SLP_MASK);
201cf052 LD	370
	371	err_sleep_init:
	372	return ret;
	373	}
	374
cd4209ce	375	#ifdef CONFIG_OF
c0dfbfe2	376	static const struct of_device_id tps65910_of_match[] = {
cd4209ce RK	377	{ .compatible = "ti,tps65910", .data = (void *)TPS65910},
	378	{ .compatible = "ti,tps65911", .data = (void *)TPS65911},
	379	{ },
	380	};
	381	MODULE_DEVICE_TABLE(of, tps65910_of_match);
	382
	383	static struct tps65910_board tps65910_parse_dt(struct i2c_client client,
01a0f4aa	384	unsigned long *chip_id)
cd4209ce RK	385	{
	386	struct device_node *np = client->dev.of_node;
	387	struct tps65910_board *board_info;
	388	unsigned int prop;
	389	const struct of_device_id *match;
cd4209ce	390	int ret = 0;
cd4209ce RK	391
	392	match = of_match_device(tps65910_of_match, &client->dev);
	393	if (!match) {
	394	dev_err(&client->dev, "Failed to find matching dt id\n");
	395	return NULL;
	396	}
	397
01a0f4aa	398	*chip_id = (unsigned long)match->data;
cd4209ce RK	399
	400	board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
	401	GFP_KERNEL);
	402	if (!board_info) {
	403	dev_err(&client->dev, "Failed to allocate pdata\n");
	404	return NULL;
	405	}
	406
	407	ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
	408	if (!ret)
	409	board_info->vmbch_threshold = prop;
cd4209ce RK	410
	411	ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop);
	412	if (!ret)
	413	board_info->vmbch2_threshold = prop;
cd4209ce	414
bcc1dd4c JH	415	prop = of_property_read_bool(np, "ti,en-ck32k-xtal");
	416	board_info->en_ck32k_xtal = prop;
	417
cd4209ce RK	418	board_info->irq = client->irq;
cd4209ce RK	419	board_info->irq_base = -1;
b079fa72 BH	420	board_info->pm_off = of_property_read_bool(np,
b079fa72 BH	421	"ti,system-power-controller");
cd4209ce RK	422
	423	return board_info;
	424	}
	425	#else
7f65f74c SO	426	static inline
7f65f74c SO	427	struct tps65910_board tps65910_parse_dt(struct i2c_client client,
01a0f4aa	428	unsigned long *chip_id)
cd4209ce RK	429	{
	430	return NULL;
	431	}
	432	#endif
201cf052	433
b079fa72 BH	434	static struct i2c_client *tps65910_i2c_client;
	435	static void tps65910_power_off(void)
	436	{
	437	struct tps65910 *tps65910;
	438
	439	tps65910 = dev_get_drvdata(&tps65910_i2c_client->dev);
	440
	441	if (tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
	442	DEVCTRL_PWR_OFF_MASK) < 0)
	443	return;
	444
	445	tps65910_reg_clear_bits(tps65910, TPS65910_DEVCTRL,
	446	DEVCTRL_DEV_ON_MASK);
	447	}
	448
f791be49	449	static int tps65910_i2c_probe(struct i2c_client *i2c,
01a0f4aa	450	const struct i2c_device_id *id)
27c6750e GG	451	{
27c6750e GG	452	struct tps65910 *tps65910;
2537df72	453	struct tps65910_board *pmic_plat_data;
cb8d8654	454	struct tps65910_board *of_pmic_plat_data = NULL;
e3471bdc	455	struct tps65910_platform_data *init_data;
01a0f4aa	456	unsigned long chip_id = id->driver_data;
27c6750e GG	457	int ret = 0;
27c6750e GG	458
2537df72	459	pmic_plat_data = dev_get_platdata(&i2c->dev);
cd4209ce	460
cb8d8654	461	if (!pmic_plat_data && i2c->dev.of_node) {
cd4209ce	462	pmic_plat_data = tps65910_parse_dt(i2c, &chip_id);
cb8d8654 LD	463	of_pmic_plat_data = pmic_plat_data;
cb8d8654 LD	464	}
cd4209ce	465
2537df72 GG	466	if (!pmic_plat_data)
	467	return -EINVAL;
	468
63fe7dee	469	init_data = devm_kzalloc(&i2c->dev, sizeof(*init_data), GFP_KERNEL);
e3471bdc GG	470	if (init_data == NULL)
	471	return -ENOMEM;
	472
63fe7dee LD	473	tps65910 = devm_kzalloc(&i2c->dev, sizeof(*tps65910), GFP_KERNEL);
63fe7dee LD	474	if (tps65910 == NULL)
27c6750e GG	475	return -ENOMEM;
27c6750e GG	476
cb8d8654	477	tps65910->of_plat_data = of_pmic_plat_data;
27c6750e GG	478	i2c_set_clientdata(i2c, tps65910);
	479	tps65910->dev = &i2c->dev;
	480	tps65910->i2c_client = i2c;
cd4209ce	481	tps65910->id = chip_id;
27c6750e	482
be1c7700 AVEM	483	/* Work around silicon erratum SWCZ010: the tps65910 may miss the
	484	* first I2C transfer. So issue a dummy transfer before the first
	485	* real transfer.
	486	*/
	487	i2c_master_send(i2c, "", 1);
63fe7dee	488	tps65910->regmap = devm_regmap_init_i2c(i2c, &tps65910_regmap_config);
dc9913a0 LD	489	if (IS_ERR(tps65910->regmap)) {
	490	ret = PTR_ERR(tps65910->regmap);
	491	dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
63fe7dee	492	return ret;
dc9913a0 LD	493	}
dc9913a0 LD	494
b1224cd1	495	init_data->irq = pmic_plat_data->irq;
1773140f	496	init_data->irq_base = pmic_plat_data->irq_base;
b1224cd1	497
1e351a95	498	tps65910_irq_init(tps65910, init_data->irq, init_data);
d02e83cb	499	tps65910_ck32k_init(tps65910, pmic_plat_data);
201cf052 LD	500	tps65910_sleepinit(tps65910, pmic_plat_data);
201cf052 LD	501
b079fa72 BH	502	if (pmic_plat_data->pm_off && !pm_power_off) {
	503	tps65910_i2c_client = i2c;
	504	pm_power_off = tps65910_power_off;
	505	}
	506
f3466e77 LD	507	ret = devm_mfd_add_devices(tps65910->dev, -1,
	508	tps65910s, ARRAY_SIZE(tps65910s),
	509	NULL, 0,
	510	regmap_irq_get_domain(tps65910->irq_data));
10ecb80e LD	511	if (ret < 0) {
	512	dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
	513	return ret;
	514	}
	515
27c6750e GG	516	return ret;
	517	}
	518
27c6750e	519	static const struct i2c_device_id tps65910_i2c_id[] = {
79557056 JEC	520	{ "tps65910", TPS65910 },
79557056 JEC	521	{ "tps65911", TPS65911 },
27c6750e GG	522	{ }
	523	};
	524	MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
	525
	526
	527	static struct i2c_driver tps65910_i2c_driver = {
	528	.driver = {
	529	.name = "tps65910",
cd4209ce	530	.of_match_table = of_match_ptr(tps65910_of_match),
27c6750e GG	531	},
27c6750e GG	532	.probe = tps65910_i2c_probe,
27c6750e GG	533	.id_table = tps65910_i2c_id,
	534	};
	535
	536	static int __init tps65910_i2c_init(void)
	537	{
	538	return i2c_add_driver(&tps65910_i2c_driver);
	539	}
	540	/* init early so consumer devices can complete system boot */
	541	subsys_initcall(tps65910_i2c_init);
	542
	543	static void __exit tps65910_i2c_exit(void)
	544	{
	545	i2c_del_driver(&tps65910_i2c_driver);
	546	}
	547	module_exit(tps65910_i2c_exit);
	548
	549	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
	550	MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
	551	MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
	552	MODULE_LICENSE("GPL");