drivers/mfd/tps65910.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * 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;
 	}

 	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;

 	prop = of_property_read_bool(np, "ti,sleep-enable");
 	board_info->en_dev_slp = prop;

 	prop = of_property_read_bool(np, "ti,sleep-keep-therm");
 	board_info->slp_keepon.therm_keepon = prop;

 	prop = of_property_read_bool(np, "ti,sleep-keep-ck32k");
 	board_info->slp_keepon.clkout32k_keepon = prop;

 	prop = of_property_read_bool(np, "ti,sleep-keep-hsclk");
 	board_info->slp_keepon.i2chs_keepon = 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");
	/*
	* 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;
	}

	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;

	prop = of_property_read_bool(np, "ti,sleep-enable");
	board_info->en_dev_slp = prop;

	prop = of_property_read_bool(np, "ti,sleep-keep-therm");
	board_info->slp_keepon.therm_keepon = prop;

	prop = of_property_read_bool(np, "ti,sleep-keep-ck32k");
	board_info->slp_keepon.clkout32k_keepon = prop;

	prop = of_property_read_bool(np, "ti,sleep-keep-hsclk");
	board_info->slp_keepon.i2chs_keepon = 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");