[linux-block.git] / drivers / mfd / palmas.c

/*
 * TI Palmas MFD Driver
 *
 * Copyright 2011-2012 Texas Instruments Inc.
 *
 * Author: Graeme Gregory <gg@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/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/palmas.h>
#include <linux/of_platform.h>

enum palmas_ids {
	PALMAS_PMIC_ID,
	PALMAS_GPIO_ID,
	PALMAS_LEDS_ID,
	PALMAS_WDT_ID,
	PALMAS_RTC_ID,
	PALMAS_PWRBUTTON_ID,
	PALMAS_GPADC_ID,
	PALMAS_RESOURCE_ID,
	PALMAS_CLK_ID,
	PALMAS_PWM_ID,
	PALMAS_USB_ID,
};

static const struct mfd_cell palmas_children[] = {
	{
		.name = "palmas-pmic",
		.id = PALMAS_PMIC_ID,
	},
	{
		.name = "palmas-gpio",
		.id = PALMAS_GPIO_ID,
	},
	{
		.name = "palmas-leds",
		.id = PALMAS_LEDS_ID,
	},
	{
		.name = "palmas-wdt",
		.id = PALMAS_WDT_ID,
	},
	{
		.name = "palmas-rtc",
		.id = PALMAS_RTC_ID,
	},
	{
		.name = "palmas-pwrbutton",
		.id = PALMAS_PWRBUTTON_ID,
	},
	{
		.name = "palmas-gpadc",
		.id = PALMAS_GPADC_ID,
	},
	{
		.name = "palmas-resource",
		.id = PALMAS_RESOURCE_ID,
	},
	{
		.name = "palmas-clk",
		.id = PALMAS_CLK_ID,
	},
	{
		.name = "palmas-pwm",
		.id = PALMAS_PWM_ID,
	},
	{
		.name = "palmas-usb",
		.id = PALMAS_USB_ID,
	}
};

static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
	{
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
					PALMAS_PRIMARY_SECONDARY_PAD3),
	},
	{
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE,
					PALMAS_GPADC_SMPS_VSEL_MONITORING),
	},
	{
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE,
					PALMAS_GPADC_TRIM16),
	},
};

static const struct regmap_irq palmas_irqs[] = {
	/* INT1 IRQs */
	[PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = {
		.mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV,
	},
	[PALMAS_PWRON_IRQ] = {
		.mask = PALMAS_INT1_STATUS_PWRON,
	},
	[PALMAS_LONG_PRESS_KEY_IRQ] = {
		.mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY,
	},
	[PALMAS_RPWRON_IRQ] = {
		.mask = PALMAS_INT1_STATUS_RPWRON,
	},
	[PALMAS_PWRDOWN_IRQ] = {
		.mask = PALMAS_INT1_STATUS_PWRDOWN,
	},
	[PALMAS_HOTDIE_IRQ] = {
		.mask = PALMAS_INT1_STATUS_HOTDIE,
	},
	[PALMAS_VSYS_MON_IRQ] = {
		.mask = PALMAS_INT1_STATUS_VSYS_MON,
	},
	[PALMAS_VBAT_MON_IRQ] = {
		.mask = PALMAS_INT1_STATUS_VBAT_MON,
	},
	/* INT2 IRQs*/
	[PALMAS_RTC_ALARM_IRQ] = {
		.mask = PALMAS_INT2_STATUS_RTC_ALARM,
		.reg_offset = 1,
	},
	[PALMAS_RTC_TIMER_IRQ] = {
		.mask = PALMAS_INT2_STATUS_RTC_TIMER,
		.reg_offset = 1,
	},
	[PALMAS_WDT_IRQ] = {
		.mask = PALMAS_INT2_STATUS_WDT,
		.reg_offset = 1,
	},
	[PALMAS_BATREMOVAL_IRQ] = {
		.mask = PALMAS_INT2_STATUS_BATREMOVAL,
		.reg_offset = 1,
	},
	[PALMAS_RESET_IN_IRQ] = {
		.mask = PALMAS_INT2_STATUS_RESET_IN,
		.reg_offset = 1,
	},
	[PALMAS_FBI_BB_IRQ] = {
		.mask = PALMAS_INT2_STATUS_FBI_BB,
		.reg_offset = 1,
	},
	[PALMAS_SHORT_IRQ] = {
		.mask = PALMAS_INT2_STATUS_SHORT,
		.reg_offset = 1,
	},
	[PALMAS_VAC_ACOK_IRQ] = {
		.mask = PALMAS_INT2_STATUS_VAC_ACOK,
		.reg_offset = 1,
	},
	/* INT3 IRQs */
	[PALMAS_GPADC_AUTO_0_IRQ] = {
		.mask = PALMAS_INT3_STATUS_GPADC_AUTO_0,
		.reg_offset = 2,
	},
	[PALMAS_GPADC_AUTO_1_IRQ] = {
		.mask = PALMAS_INT3_STATUS_GPADC_AUTO_1,
		.reg_offset = 2,
	},
	[PALMAS_GPADC_EOC_SW_IRQ] = {
		.mask = PALMAS_INT3_STATUS_GPADC_EOC_SW,
		.reg_offset = 2,
	},
	[PALMAS_GPADC_EOC_RT_IRQ] = {
		.mask = PALMAS_INT3_STATUS_GPADC_EOC_RT,
		.reg_offset = 2,
	},
	[PALMAS_ID_OTG_IRQ] = {
		.mask = PALMAS_INT3_STATUS_ID_OTG,
		.reg_offset = 2,
	},
	[PALMAS_ID_IRQ] = {
		.mask = PALMAS_INT3_STATUS_ID,
		.reg_offset = 2,
	},
	[PALMAS_VBUS_OTG_IRQ] = {
		.mask = PALMAS_INT3_STATUS_VBUS_OTG,
		.reg_offset = 2,
	},
	[PALMAS_VBUS_IRQ] = {
		.mask = PALMAS_INT3_STATUS_VBUS,
		.reg_offset = 2,
	},
	/* INT4 IRQs */
	[PALMAS_GPIO_0_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_0,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_1_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_1,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_2_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_2,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_3_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_3,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_4_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_4,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_5_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_5,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_6_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_6,
		.reg_offset = 3,
	},
	[PALMAS_GPIO_7_IRQ] = {
		.mask = PALMAS_INT4_STATUS_GPIO_7,
		.reg_offset = 3,
	},
};

static struct regmap_irq_chip palmas_irq_chip = {
	.name = "palmas",
	.irqs = palmas_irqs,
	.num_irqs = ARRAY_SIZE(palmas_irqs),

	.num_regs = 4,
	.irq_reg_stride = 5,
	.status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
			PALMAS_INT1_STATUS),
	.mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
			PALMAS_INT1_MASK),
};

static void palmas_dt_to_pdata(struct device_node *node,
		struct palmas_platform_data *pdata)
{
	int ret;
	u32 prop;

	ret = of_property_read_u32(node, "ti,mux_pad1", &prop);
	if (!ret) {
		pdata->mux_from_pdata = 1;
		pdata->pad1 = prop;
	}

	ret = of_property_read_u32(node, "ti,mux_pad2", &prop);
	if (!ret) {
		pdata->mux_from_pdata = 1;
		pdata->pad2 = prop;
	}

	/* The default for this register is all masked */
	ret = of_property_read_u32(node, "ti,power_ctrl", &prop);
	if (!ret)
		pdata->power_ctrl = prop;
	else
		pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK |
					PALMAS_POWER_CTRL_ENABLE1_MASK |
					PALMAS_POWER_CTRL_ENABLE2_MASK;
}

static int palmas_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct palmas *palmas;
	struct palmas_platform_data *pdata;
	struct device_node *node = i2c->dev.of_node;
	int ret = 0, i;
	unsigned int reg, addr;
	int slave;
	struct mfd_cell *children;

	pdata = dev_get_platdata(&i2c->dev);

	if (node && !pdata) {
		pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);

		if (!pdata)
			return -ENOMEM;

		palmas_dt_to_pdata(node, pdata);
	}

	if (!pdata)
		return -EINVAL;

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

	i2c_set_clientdata(i2c, palmas);
	palmas->dev = &i2c->dev;
	palmas->id = id->driver_data;
	palmas->irq = i2c->irq;

	for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
		if (i == 0)
			palmas->i2c_clients[i] = i2c;
		else {
			palmas->i2c_clients[i] =
					i2c_new_dummy(i2c->adapter,
							i2c->addr + i);
			if (!palmas->i2c_clients[i]) {
				dev_err(palmas->dev,
					"can't attach client %d\n", i);
				ret = -ENOMEM;
				goto err;
			}
		}
		palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i],
				&palmas_regmap_config[i]);
		if (IS_ERR(palmas->regmap[i])) {
			ret = PTR_ERR(palmas->regmap[i]);
			dev_err(palmas->dev,
				"Failed to allocate regmap %d, err: %d\n",
				i, ret);
			goto err;
		}
	}

	/* Change IRQ into clear on read mode for efficiency */
	slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
	addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
	reg = PALMAS_INT_CTRL_INT_CLEAR;

	regmap_write(palmas->regmap[slave], addr, reg);

	ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
			IRQF_ONESHOT | IRQF_TRIGGER_LOW, 0, &palmas_irq_chip,
			&palmas->irq_data);
	if (ret < 0)
		goto err;

	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
			PALMAS_PRIMARY_SECONDARY_PAD1);

	if (pdata->mux_from_pdata) {
		reg = pdata->pad1;
		ret = regmap_write(palmas->regmap[slave], addr, reg);
		if (ret)
			goto err_irq;
	} else {
		ret = regmap_read(palmas->regmap[slave], addr, &reg);
		if (ret)
			goto err_irq;
	}

	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
		palmas->gpio_muxed |= PALMAS_GPIO_0_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK))
		palmas->gpio_muxed |= PALMAS_GPIO_1_MUXED;
	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
			(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
		palmas->led_muxed |= PALMAS_LED1_MUXED;
	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
			(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
		palmas->pwm_muxed |= PALMAS_PWM1_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK))
		palmas->gpio_muxed |= PALMAS_GPIO_2_MUXED;
	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
			(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
		palmas->led_muxed |= PALMAS_LED2_MUXED;
	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
			(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
		palmas->pwm_muxed |= PALMAS_PWM2_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
		palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED;

	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
			PALMAS_PRIMARY_SECONDARY_PAD2);

	if (pdata->mux_from_pdata) {
		reg = pdata->pad2;
		ret = regmap_write(palmas->regmap[slave], addr, reg);
		if (ret)
			goto err_irq;
	} else {
		ret = regmap_read(palmas->regmap[slave], addr, &reg);
		if (ret)
			goto err_irq;
	}

	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
		palmas->gpio_muxed |= PALMAS_GPIO_4_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK))
		palmas->gpio_muxed |= PALMAS_GPIO_5_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6))
		palmas->gpio_muxed |= PALMAS_GPIO_6_MUXED;
	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK))
		palmas->gpio_muxed |= PALMAS_GPIO_7_MUXED;

	dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n",
			palmas->gpio_muxed, palmas->pwm_muxed,
			palmas->led_muxed);

	reg = pdata->power_ctrl;

	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
	addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);

	ret = regmap_write(palmas->regmap[slave], addr, reg);
	if (ret)
		goto err_irq;

	/*
	 * If we are probing with DT do this the DT way and return here
	 * otherwise continue and add devices using mfd helpers.
	 */
	if (node) {
		ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
		if (ret < 0)
			goto err_irq;
		else
			return ret;
	}

	children = kmemdup(palmas_children, sizeof(palmas_children),
			   GFP_KERNEL);
	if (!children) {
		ret = -ENOMEM;
		goto err_irq;
	}

	children[PALMAS_PMIC_ID].platform_data = pdata->pmic_pdata;
	children[PALMAS_PMIC_ID].pdata_size = sizeof(*pdata->pmic_pdata);

	children[PALMAS_GPADC_ID].platform_data = pdata->gpadc_pdata;
	children[PALMAS_GPADC_ID].pdata_size = sizeof(*pdata->gpadc_pdata);

	children[PALMAS_RESOURCE_ID].platform_data = pdata->resource_pdata;
	children[PALMAS_RESOURCE_ID].pdata_size =
			sizeof(*pdata->resource_pdata);

	children[PALMAS_USB_ID].platform_data = pdata->usb_pdata;
	children[PALMAS_USB_ID].pdata_size = sizeof(*pdata->usb_pdata);

	children[PALMAS_CLK_ID].platform_data = pdata->clk_pdata;
	children[PALMAS_CLK_ID].pdata_size = sizeof(*pdata->clk_pdata);

	ret = mfd_add_devices(palmas->dev, -1,
			      children, ARRAY_SIZE(palmas_children),
			      NULL, regmap_irq_chip_get_base(palmas->irq_data),
			      NULL);
	kfree(children);

	if (ret < 0)
		goto err_devices;

	return ret;

err_devices:
	mfd_remove_devices(palmas->dev);
err_irq:
	regmap_del_irq_chip(palmas->irq, palmas->irq_data);
err:
	return ret;
}

static int palmas_i2c_remove(struct i2c_client *i2c)
{
	struct palmas *palmas = i2c_get_clientdata(i2c);

	mfd_remove_devices(palmas->dev);
	regmap_del_irq_chip(palmas->irq, palmas->irq_data);

	return 0;
}

static const struct i2c_device_id palmas_i2c_id[] = {
	{ "palmas", },
	{ "twl6035", },
	{ "twl6037", },
	{ "tps65913", },
	{ /* end */ }
};
MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);

static struct of_device_id of_palmas_match_tbl[] = {
	{ .compatible = "ti,palmas", },
	{ /* end */ }
};

static struct i2c_driver palmas_i2c_driver = {
	.driver = {
		   .name = "palmas",
		   .of_match_table = of_palmas_match_tbl,
		   .owner = THIS_MODULE,
	},
	.probe = palmas_i2c_probe,
	.remove = palmas_i2c_remove,
	.id_table = palmas_i2c_id,
};

static int __init palmas_i2c_init(void)
{
	return i2c_add_driver(&palmas_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(palmas_i2c_init);

static void __exit palmas_i2c_exit(void)
{
	i2c_del_driver(&palmas_i2c_driver);
}
module_exit(palmas_i2c_exit);

MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_DESCRIPTION("Palmas chip family multi-function driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
2945fbc2 GG	1	/*
	2	* TI Palmas MFD Driver
	3	*
	4	* Copyright 2011-2012 Texas Instruments Inc.
	5	*
	6	* Author: Graeme Gregory <gg@slimlogic.co.uk>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	*/
	14
	15	#include <linux/module.h>
	16	#include <linux/moduleparam.h>
	17	#include <linux/init.h>
	18	#include <linux/slab.h>
	19	#include <linux/i2c.h>
	20	#include <linux/interrupt.h>
	21	#include <linux/irq.h>
	22	#include <linux/regmap.h>
	23	#include <linux/err.h>
	24	#include <linux/mfd/core.h>
	25	#include <linux/mfd/palmas.h>
9c14ac33	26	#include <linux/of_platform.h>
2945fbc2	27
2945fbc2 GG	28	enum palmas_ids {
	29	PALMAS_PMIC_ID,
	30	PALMAS_GPIO_ID,
	31	PALMAS_LEDS_ID,
	32	PALMAS_WDT_ID,
	33	PALMAS_RTC_ID,
	34	PALMAS_PWRBUTTON_ID,
	35	PALMAS_GPADC_ID,
	36	PALMAS_RESOURCE_ID,
	37	PALMAS_CLK_ID,
	38	PALMAS_PWM_ID,
	39	PALMAS_USB_ID,
	40	};
	41
	42	static const struct mfd_cell palmas_children[] = {
	43	{
	44	.name = "palmas-pmic",
	45	.id = PALMAS_PMIC_ID,
	46	},
	47	{
	48	.name = "palmas-gpio",
	49	.id = PALMAS_GPIO_ID,
	50	},
	51	{
	52	.name = "palmas-leds",
	53	.id = PALMAS_LEDS_ID,
	54	},
	55	{
	56	.name = "palmas-wdt",
	57	.id = PALMAS_WDT_ID,
	58	},
	59	{
	60	.name = "palmas-rtc",
2945fbc2 GG	61	.id = PALMAS_RTC_ID,
	62	},
	63	{
	64	.name = "palmas-pwrbutton",
2945fbc2 GG	65	.id = PALMAS_PWRBUTTON_ID,
	66	},
	67	{
	68	.name = "palmas-gpadc",
2945fbc2 GG	69	.id = PALMAS_GPADC_ID,
	70	},
	71	{
	72	.name = "palmas-resource",
	73	.id = PALMAS_RESOURCE_ID,
	74	},
	75	{
	76	.name = "palmas-clk",
	77	.id = PALMAS_CLK_ID,
	78	},
	79	{
	80	.name = "palmas-pwm",
	81	.id = PALMAS_PWM_ID,
	82	},
	83	{
	84	.name = "palmas-usb",
2945fbc2 GG	85	.id = PALMAS_USB_ID,
	86	}
	87	};
	88
	89	static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
	90	{
	91	.reg_bits = 8,
	92	.val_bits = 8,
	93	.max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	94	PALMAS_PRIMARY_SECONDARY_PAD3),
	95	},
	96	{
	97	.reg_bits = 8,
	98	.val_bits = 8,
	99	.max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE,
	100	PALMAS_GPADC_SMPS_VSEL_MONITORING),
	101	},
	102	{
	103	.reg_bits = 8,
	104	.val_bits = 8,
	105	.max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE,
	106	PALMAS_GPADC_TRIM16),
	107	},
	108	};
	109
	110	static const struct regmap_irq palmas_irqs[] = {
	111	/* INT1 IRQs */
	112	[PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = {
	113	.mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV,
	114	},
	115	[PALMAS_PWRON_IRQ] = {
	116	.mask = PALMAS_INT1_STATUS_PWRON,
	117	},
	118	[PALMAS_LONG_PRESS_KEY_IRQ] = {
	119	.mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY,
	120	},
	121	[PALMAS_RPWRON_IRQ] = {
	122	.mask = PALMAS_INT1_STATUS_RPWRON,
	123	},
	124	[PALMAS_PWRDOWN_IRQ] = {
	125	.mask = PALMAS_INT1_STATUS_PWRDOWN,
	126	},
	127	[PALMAS_HOTDIE_IRQ] = {
	128	.mask = PALMAS_INT1_STATUS_HOTDIE,
	129	},
	130	[PALMAS_VSYS_MON_IRQ] = {
	131	.mask = PALMAS_INT1_STATUS_VSYS_MON,
	132	},
	133	[PALMAS_VBAT_MON_IRQ] = {
	134	.mask = PALMAS_INT1_STATUS_VBAT_MON,
	135	},
	136	/* INT2 IRQs*/
	137	[PALMAS_RTC_ALARM_IRQ] = {
	138	.mask = PALMAS_INT2_STATUS_RTC_ALARM,
	139	.reg_offset = 1,
	140	},
	141	[PALMAS_RTC_TIMER_IRQ] = {
	142	.mask = PALMAS_INT2_STATUS_RTC_TIMER,
	143	.reg_offset = 1,
	144	},
	145	[PALMAS_WDT_IRQ] = {
	146	.mask = PALMAS_INT2_STATUS_WDT,
	147	.reg_offset = 1,
	148	},
149	[PALMAS_BATREMOVAL_IRQ] = {
150	.mask = PALMAS_INT2_STATUS_BATREMOVAL,
151	.reg_offset = 1,
152	},
153	[PALMAS_RESET_IN_IRQ] = {
154	.mask = PALMAS_INT2_STATUS_RESET_IN,
155	.reg_offset = 1,
156	},
157	[PALMAS_FBI_BB_IRQ] = {
158	.mask = PALMAS_INT2_STATUS_FBI_BB,
159	.reg_offset = 1,
160	},
161	[PALMAS_SHORT_IRQ] = {
162	.mask = PALMAS_INT2_STATUS_SHORT,
163	.reg_offset = 1,
164	},
165	[PALMAS_VAC_ACOK_IRQ] = {
166	.mask = PALMAS_INT2_STATUS_VAC_ACOK,
167	.reg_offset = 1,
168	},
169	/* INT3 IRQs */
170	[PALMAS_GPADC_AUTO_0_IRQ] = {
171	.mask = PALMAS_INT3_STATUS_GPADC_AUTO_0,
172	.reg_offset = 2,
173	},
174	[PALMAS_GPADC_AUTO_1_IRQ] = {
175	.mask = PALMAS_INT3_STATUS_GPADC_AUTO_1,
176	.reg_offset = 2,
177	},
178	[PALMAS_GPADC_EOC_SW_IRQ] = {
179	.mask = PALMAS_INT3_STATUS_GPADC_EOC_SW,
180	.reg_offset = 2,
181	},
182	[PALMAS_GPADC_EOC_RT_IRQ] = {
183	.mask = PALMAS_INT3_STATUS_GPADC_EOC_RT,
184	.reg_offset = 2,
185	},
186	[PALMAS_ID_OTG_IRQ] = {
187	.mask = PALMAS_INT3_STATUS_ID_OTG,
188	.reg_offset = 2,
189	},
190	[PALMAS_ID_IRQ] = {
191	.mask = PALMAS_INT3_STATUS_ID,
192	.reg_offset = 2,
193	},
194	[PALMAS_VBUS_OTG_IRQ] = {
195	.mask = PALMAS_INT3_STATUS_VBUS_OTG,
196	.reg_offset = 2,
197	},
198	[PALMAS_VBUS_IRQ] = {
199	.mask = PALMAS_INT3_STATUS_VBUS,
200	.reg_offset = 2,
201	},
202	/* INT4 IRQs */
203	[PALMAS_GPIO_0_IRQ] = {
204	.mask = PALMAS_INT4_STATUS_GPIO_0,
205	.reg_offset = 3,
206	},
207	[PALMAS_GPIO_1_IRQ] = {
208	.mask = PALMAS_INT4_STATUS_GPIO_1,
209	.reg_offset = 3,
210	},
211	[PALMAS_GPIO_2_IRQ] = {
212	.mask = PALMAS_INT4_STATUS_GPIO_2,
213	.reg_offset = 3,
214	},
215	[PALMAS_GPIO_3_IRQ] = {
216	.mask = PALMAS_INT4_STATUS_GPIO_3,
217	.reg_offset = 3,
218	},
219	[PALMAS_GPIO_4_IRQ] = {
220	.mask = PALMAS_INT4_STATUS_GPIO_4,
221	.reg_offset = 3,
222	},
223	[PALMAS_GPIO_5_IRQ] = {
224	.mask = PALMAS_INT4_STATUS_GPIO_5,
225	.reg_offset = 3,
226	},
227	[PALMAS_GPIO_6_IRQ] = {
228	.mask = PALMAS_INT4_STATUS_GPIO_6,
229	.reg_offset = 3,
230	},
231	[PALMAS_GPIO_7_IRQ] = {
232	.mask = PALMAS_INT4_STATUS_GPIO_7,
233	.reg_offset = 3,
234	},
235	};
236
237	static struct regmap_irq_chip palmas_irq_chip = {
238	.name = "palmas",
239	.irqs = palmas_irqs,
240	.num_irqs = ARRAY_SIZE(palmas_irqs),
241
242	.num_regs = 4,
243	.irq_reg_stride = 5,
244	.status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
245	PALMAS_INT1_STATUS),
246	.mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
247	PALMAS_INT1_MASK),
248	};
249
f791be49	250	static void palmas_dt_to_pdata(struct device_node *node,
9c14ac33 GG	251	struct palmas_platform_data *pdata)
	252	{
	253	int ret;
	254	u32 prop;
	255
	256	ret = of_property_read_u32(node, "ti,mux_pad1", &prop);
	257	if (!ret) {
	258	pdata->mux_from_pdata = 1;
	259	pdata->pad1 = prop;
	260	}
	261
	262	ret = of_property_read_u32(node, "ti,mux_pad2", &prop);
	263	if (!ret) {
	264	pdata->mux_from_pdata = 1;
	265	pdata->pad2 = prop;
	266	}
	267
	268	/* The default for this register is all masked */
	269	ret = of_property_read_u32(node, "ti,power_ctrl", &prop);
	270	if (!ret)
	271	pdata->power_ctrl = prop;
	272	else
	273	pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK \|
	274	PALMAS_POWER_CTRL_ENABLE1_MASK \|
	275	PALMAS_POWER_CTRL_ENABLE2_MASK;
	276	}
	277
f791be49	278	static int palmas_i2c_probe(struct i2c_client *i2c,
2945fbc2 GG	279	const struct i2c_device_id *id)
	280	{
	281	struct palmas *palmas;
	282	struct palmas_platform_data *pdata;
9c14ac33	283	struct device_node *node = i2c->dev.of_node;
2945fbc2 GG	284	int ret = 0, i;
	285	unsigned int reg, addr;
	286	int slave;
	287	struct mfd_cell *children;
	288
	289	pdata = dev_get_platdata(&i2c->dev);
9c14ac33 GG	290
	291	if (node && !pdata) {
	292	pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
	293
	294	if (!pdata)
	295	return -ENOMEM;
	296
	297	palmas_dt_to_pdata(node, pdata);
	298	}
	299
2945fbc2 GG	300	if (!pdata)
	301	return -EINVAL;
	302
	303	palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL);
	304	if (palmas == NULL)
	305	return -ENOMEM;
	306
	307	i2c_set_clientdata(i2c, palmas);
	308	palmas->dev = &i2c->dev;
	309	palmas->id = id->driver_data;
	310	palmas->irq = i2c->irq;
	311
	312	for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
	313	if (i == 0)
	314	palmas->i2c_clients[i] = i2c;
	315	else {
	316	palmas->i2c_clients[i] =
	317	i2c_new_dummy(i2c->adapter,
	318	i2c->addr + i);
	319	if (!palmas->i2c_clients[i]) {
	320	dev_err(palmas->dev,
	321	"can't attach client %d\n", i);
	322	ret = -ENOMEM;
	323	goto err;
	324	}
	325	}
	326	palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i],
	327	&palmas_regmap_config[i]);
	328	if (IS_ERR(palmas->regmap[i])) {
	329	ret = PTR_ERR(palmas->regmap[i]);
	330	dev_err(palmas->dev,
	331	"Failed to allocate regmap %d, err: %d\n",
	332	i, ret);
	333	goto err;
	334	}
	335	}
	336
b330f85d GG	337	/* Change IRQ into clear on read mode for efficiency */
	338	slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
	339	addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
	340	reg = PALMAS_INT_CTRL_INT_CLEAR;
	341
	342	regmap_write(palmas->regmap[slave], addr, reg);
	343
	344	ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
8664fade	345	IRQF_ONESHOT \| IRQF_TRIGGER_LOW, 0, &palmas_irq_chip,
2945fbc2 GG	346	&palmas->irq_data);
	347	if (ret < 0)
	348	goto err;
	349
	350	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
	351	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	352	PALMAS_PRIMARY_SECONDARY_PAD1);
	353
	354	if (pdata->mux_from_pdata) {
	355	reg = pdata->pad1;
	356	ret = regmap_write(palmas->regmap[slave], addr, reg);
	357	if (ret)
3f78decc	358	goto err_irq;
2945fbc2 GG	359	} else {
	360	ret = regmap_read(palmas->regmap[slave], addr, &reg);
	361	if (ret)
3f78decc	362	goto err_irq;
2945fbc2 GG	363	}
	364
	365	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
	366	palmas->gpio_muxed \|= PALMAS_GPIO_0_MUXED;
	367	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK))
	368	palmas->gpio_muxed \|= PALMAS_GPIO_1_MUXED;
	369	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
	370	(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
	371	palmas->led_muxed \|= PALMAS_LED1_MUXED;
	372	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
	373	(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
	374	palmas->pwm_muxed \|= PALMAS_PWM1_MUXED;
	375	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK))
	376	palmas->gpio_muxed \|= PALMAS_GPIO_2_MUXED;
	377	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
	378	(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
	379	palmas->led_muxed \|= PALMAS_LED2_MUXED;
	380	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
	381	(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
	382	palmas->pwm_muxed \|= PALMAS_PWM2_MUXED;
	383	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
	384	palmas->gpio_muxed \|= PALMAS_GPIO_3_MUXED;
	385
	386	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	387	PALMAS_PRIMARY_SECONDARY_PAD2);
	388
	389	if (pdata->mux_from_pdata) {
	390	reg = pdata->pad2;
	391	ret = regmap_write(palmas->regmap[slave], addr, reg);
	392	if (ret)
3f78decc	393	goto err_irq;
2945fbc2 GG	394	} else {
	395	ret = regmap_read(palmas->regmap[slave], addr, &reg);
	396	if (ret)
3f78decc	397	goto err_irq;
2945fbc2 GG	398	}
	399
	400	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
	401	palmas->gpio_muxed \|= PALMAS_GPIO_4_MUXED;
	402	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK))
	403	palmas->gpio_muxed \|= PALMAS_GPIO_5_MUXED;
	404	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6))
	405	palmas->gpio_muxed \|= PALMAS_GPIO_6_MUXED;
	406	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK))
	407	palmas->gpio_muxed \|= PALMAS_GPIO_7_MUXED;
	408
	409	dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n",
	410	palmas->gpio_muxed, palmas->pwm_muxed,
	411	palmas->led_muxed);
	412
	413	reg = pdata->power_ctrl;
	414
	415	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
	416	addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);
	417
	418	ret = regmap_write(palmas->regmap[slave], addr, reg);
	419	if (ret)
3f78decc	420	goto err_irq;
2945fbc2	421
9c14ac33 GG	422	/*
	423	* If we are probing with DT do this the DT way and return here
	424	* otherwise continue and add devices using mfd helpers.
	425	*/
	426	if (node) {
	427	ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
	428	if (ret < 0)
	429	goto err_irq;
	430	else
	431	return ret;
	432	}
	433
2945fbc2 GG	434	children = kmemdup(palmas_children, sizeof(palmas_children),
	435	GFP_KERNEL);
	436	if (!children) {
	437	ret = -ENOMEM;
3f78decc	438	goto err_irq;
2945fbc2 GG	439	}
2945fbc2 GG	440
adc20e02 GG	441	children[PALMAS_PMIC_ID].platform_data = pdata->pmic_pdata;
	442	children[PALMAS_PMIC_ID].pdata_size = sizeof(*pdata->pmic_pdata);
	443
190ef1a6 GG	444	children[PALMAS_GPADC_ID].platform_data = pdata->gpadc_pdata;
	445	children[PALMAS_GPADC_ID].pdata_size = sizeof(*pdata->gpadc_pdata);
	446
	447	children[PALMAS_RESOURCE_ID].platform_data = pdata->resource_pdata;
	448	children[PALMAS_RESOURCE_ID].pdata_size =
	449	sizeof(*pdata->resource_pdata);
	450
	451	children[PALMAS_USB_ID].platform_data = pdata->usb_pdata;
	452	children[PALMAS_USB_ID].pdata_size = sizeof(*pdata->usb_pdata);
	453
	454	children[PALMAS_CLK_ID].platform_data = pdata->clk_pdata;
	455	children[PALMAS_CLK_ID].pdata_size = sizeof(*pdata->clk_pdata);
	456
2945fbc2 GG	457	ret = mfd_add_devices(palmas->dev, -1,
2945fbc2 GG	458	children, ARRAY_SIZE(palmas_children),
55692af5 MB	459	NULL, regmap_irq_chip_get_base(palmas->irq_data),
55692af5 MB	460	NULL);
2945fbc2 GG	461	kfree(children);
	462
	463	if (ret < 0)
3f78decc	464	goto err_devices;
2945fbc2 GG	465
	466	return ret;
	467
3f78decc	468	err_devices:
2945fbc2	469	mfd_remove_devices(palmas->dev);
3f78decc GG	470	err_irq:
	471	regmap_del_irq_chip(palmas->irq, palmas->irq_data);
	472	err:
2945fbc2 GG	473	return ret;
	474	}
	475
	476	static int palmas_i2c_remove(struct i2c_client *i2c)
	477	{
	478	struct palmas *palmas = i2c_get_clientdata(i2c);
	479
	480	mfd_remove_devices(palmas->dev);
	481	regmap_del_irq_chip(palmas->irq, palmas->irq_data);
	482
	483	return 0;
	484	}
	485
	486	static const struct i2c_device_id palmas_i2c_id[] = {
	487	{ "palmas", },
	488	{ "twl6035", },
	489	{ "twl6037", },
	490	{ "tps65913", },
00ba81c1	491	{ /* end */ }
2945fbc2 GG	492	};
	493	MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
	494
a9e9ce4c	495	static struct of_device_id of_palmas_match_tbl[] = {
2945fbc2 GG	496	{ .compatible = "ti,palmas", },
	497	{ /* end */ }
	498	};
	499
	500	static struct i2c_driver palmas_i2c_driver = {
	501	.driver = {
	502	.name = "palmas",
	503	.of_match_table = of_palmas_match_tbl,
	504	.owner = THIS_MODULE,
	505	},
	506	.probe = palmas_i2c_probe,
	507	.remove = palmas_i2c_remove,
	508	.id_table = palmas_i2c_id,
	509	};
	510
	511	static int __init palmas_i2c_init(void)
	512	{
	513	return i2c_add_driver(&palmas_i2c_driver);
	514	}
	515	/* init early so consumer devices can complete system boot */
	516	subsys_initcall(palmas_i2c_init);
	517
	518	static void __exit palmas_i2c_exit(void)
	519	{
	520	i2c_del_driver(&palmas_i2c_driver);
	521	}
	522	module_exit(palmas_i2c_exit);
	523
	524	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
	525	MODULE_DESCRIPTION("Palmas chip family multi-function driver");
	526	MODULE_LICENSE("GPL");