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

/*
 * TI Palmas MFD Driver
 *
 * Copyright 2011-2012 Texas Instruments Inc.
 *
 * Author: Graeme Gregory <[email protected]>
 *
 *  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 struct resource palmas_rtc_resources[] = {
	{
		.start  = PALMAS_RTC_ALARM_IRQ,
		.end    = PALMAS_RTC_ALARM_IRQ,
		.flags  = IORESOURCE_IRQ,
	},
};

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,
		.resources = &palmas_rtc_resources[0],
		.num_resources = ARRAY_SIZE(palmas_rtc_resources),
	},
	{
		.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 int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
		struct palmas_platform_data *pdata)
{
	struct irq_data *irq_data = irq_get_irq_data(i2c->irq);
	if (!irq_data) {
		dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq);
		return -EINVAL;
	}

	pdata->irq_flags = irqd_get_trigger_type(irq_data);
	dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags);
	return 0;
}

static void palmas_dt_to_pdata(struct i2c_client *i2c,
		struct palmas_platform_data *pdata)
{
	struct device_node *node = i2c->dev.of_node;
	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;
	if (i2c->irq)
		palmas_set_pdata_irq_flag(i2c, pdata);
}

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(i2c, 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 interrupt line output polarity */
	if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH)
		reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
	else
		reg = 0;
	ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
			PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
			reg);
	if (ret < 0) {
		dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", 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 | pdata->irq_flags, 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, 0,
			      regmap_irq_get_domain(palmas->irq_data));
	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 <[email protected]>");
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 <[email protected]>
	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
a36516b0 LD	42	static struct resource palmas_rtc_resources[] = {
	43	{
	44	.start = PALMAS_RTC_ALARM_IRQ,
	45	.end = PALMAS_RTC_ALARM_IRQ,
	46	.flags = IORESOURCE_IRQ,
	47	},
	48	};
	49
2945fbc2 GG	50	static const struct mfd_cell palmas_children[] = {
	51	{
	52	.name = "palmas-pmic",
	53	.id = PALMAS_PMIC_ID,
	54	},
	55	{
	56	.name = "palmas-gpio",
	57	.id = PALMAS_GPIO_ID,
	58	},
	59	{
	60	.name = "palmas-leds",
	61	.id = PALMAS_LEDS_ID,
	62	},
	63	{
	64	.name = "palmas-wdt",
	65	.id = PALMAS_WDT_ID,
	66	},
	67	{
	68	.name = "palmas-rtc",
2945fbc2	69	.id = PALMAS_RTC_ID,
a36516b0 LD	70	.resources = &palmas_rtc_resources[0],
a36516b0 LD	71	.num_resources = ARRAY_SIZE(palmas_rtc_resources),
2945fbc2 GG	72	},
	73	{
	74	.name = "palmas-pwrbutton",
2945fbc2 GG	75	.id = PALMAS_PWRBUTTON_ID,
	76	},
	77	{
	78	.name = "palmas-gpadc",
2945fbc2 GG	79	.id = PALMAS_GPADC_ID,
	80	},
	81	{
	82	.name = "palmas-resource",
	83	.id = PALMAS_RESOURCE_ID,
	84	},
	85	{
	86	.name = "palmas-clk",
	87	.id = PALMAS_CLK_ID,
	88	},
	89	{
	90	.name = "palmas-pwm",
	91	.id = PALMAS_PWM_ID,
	92	},
	93	{
	94	.name = "palmas-usb",
2945fbc2 GG	95	.id = PALMAS_USB_ID,
	96	}
	97	};
	98
	99	static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
	100	{
	101	.reg_bits = 8,
	102	.val_bits = 8,
	103	.max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	104	PALMAS_PRIMARY_SECONDARY_PAD3),
	105	},
	106	{
	107	.reg_bits = 8,
	108	.val_bits = 8,
	109	.max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE,
	110	PALMAS_GPADC_SMPS_VSEL_MONITORING),
	111	},
	112	{
	113	.reg_bits = 8,
	114	.val_bits = 8,
	115	.max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE,
	116	PALMAS_GPADC_TRIM16),
	117	},
	118	};
	119
	120	static const struct regmap_irq palmas_irqs[] = {
	121	/* INT1 IRQs */
	122	[PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = {
	123	.mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV,
	124	},
	125	[PALMAS_PWRON_IRQ] = {
	126	.mask = PALMAS_INT1_STATUS_PWRON,
	127	},
	128	[PALMAS_LONG_PRESS_KEY_IRQ] = {
	129	.mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY,
	130	},
	131	[PALMAS_RPWRON_IRQ] = {
	132	.mask = PALMAS_INT1_STATUS_RPWRON,
	133	},
	134	[PALMAS_PWRDOWN_IRQ] = {
	135	.mask = PALMAS_INT1_STATUS_PWRDOWN,
	136	},
	137	[PALMAS_HOTDIE_IRQ] = {
	138	.mask = PALMAS_INT1_STATUS_HOTDIE,
	139	},
	140	[PALMAS_VSYS_MON_IRQ] = {
	141	.mask = PALMAS_INT1_STATUS_VSYS_MON,
	142	},
	143	[PALMAS_VBAT_MON_IRQ] = {
	144	.mask = PALMAS_INT1_STATUS_VBAT_MON,
	145	},
	146	/* INT2 IRQs*/
	147	[PALMAS_RTC_ALARM_IRQ] = {
	148	.mask = PALMAS_INT2_STATUS_RTC_ALARM,
	149	.reg_offset = 1,
	150	},
	151	[PALMAS_RTC_TIMER_IRQ] = {
	152	.mask = PALMAS_INT2_STATUS_RTC_TIMER,
	153	.reg_offset = 1,
	154	},
	155	[PALMAS_WDT_IRQ] = {
	156	.mask = PALMAS_INT2_STATUS_WDT,
	157	.reg_offset = 1,
	158	},
159	[PALMAS_BATREMOVAL_IRQ] = {
160	.mask = PALMAS_INT2_STATUS_BATREMOVAL,
161	.reg_offset = 1,
162	},
163	[PALMAS_RESET_IN_IRQ] = {
164	.mask = PALMAS_INT2_STATUS_RESET_IN,
165	.reg_offset = 1,
166	},
167	[PALMAS_FBI_BB_IRQ] = {
168	.mask = PALMAS_INT2_STATUS_FBI_BB,
169	.reg_offset = 1,
170	},
171	[PALMAS_SHORT_IRQ] = {
172	.mask = PALMAS_INT2_STATUS_SHORT,
173	.reg_offset = 1,
174	},
175	[PALMAS_VAC_ACOK_IRQ] = {
176	.mask = PALMAS_INT2_STATUS_VAC_ACOK,
177	.reg_offset = 1,
178	},
179	/* INT3 IRQs */
180	[PALMAS_GPADC_AUTO_0_IRQ] = {
181	.mask = PALMAS_INT3_STATUS_GPADC_AUTO_0,
182	.reg_offset = 2,
183	},
184	[PALMAS_GPADC_AUTO_1_IRQ] = {
185	.mask = PALMAS_INT3_STATUS_GPADC_AUTO_1,
186	.reg_offset = 2,
187	},
188	[PALMAS_GPADC_EOC_SW_IRQ] = {
189	.mask = PALMAS_INT3_STATUS_GPADC_EOC_SW,
190	.reg_offset = 2,
191	},
192	[PALMAS_GPADC_EOC_RT_IRQ] = {
193	.mask = PALMAS_INT3_STATUS_GPADC_EOC_RT,
194	.reg_offset = 2,
195	},
196	[PALMAS_ID_OTG_IRQ] = {
197	.mask = PALMAS_INT3_STATUS_ID_OTG,
198	.reg_offset = 2,
199	},
200	[PALMAS_ID_IRQ] = {
201	.mask = PALMAS_INT3_STATUS_ID,
202	.reg_offset = 2,
203	},
204	[PALMAS_VBUS_OTG_IRQ] = {
205	.mask = PALMAS_INT3_STATUS_VBUS_OTG,
206	.reg_offset = 2,
207	},
208	[PALMAS_VBUS_IRQ] = {
209	.mask = PALMAS_INT3_STATUS_VBUS,
210	.reg_offset = 2,
211	},
212	/* INT4 IRQs */
213	[PALMAS_GPIO_0_IRQ] = {
214	.mask = PALMAS_INT4_STATUS_GPIO_0,
215	.reg_offset = 3,
216	},
217	[PALMAS_GPIO_1_IRQ] = {
218	.mask = PALMAS_INT4_STATUS_GPIO_1,
219	.reg_offset = 3,
220	},
221	[PALMAS_GPIO_2_IRQ] = {
222	.mask = PALMAS_INT4_STATUS_GPIO_2,
223	.reg_offset = 3,
224	},
225	[PALMAS_GPIO_3_IRQ] = {
226	.mask = PALMAS_INT4_STATUS_GPIO_3,
227	.reg_offset = 3,
228	},
229	[PALMAS_GPIO_4_IRQ] = {
230	.mask = PALMAS_INT4_STATUS_GPIO_4,
231	.reg_offset = 3,
232	},
233	[PALMAS_GPIO_5_IRQ] = {
234	.mask = PALMAS_INT4_STATUS_GPIO_5,
235	.reg_offset = 3,
236	},
237	[PALMAS_GPIO_6_IRQ] = {
238	.mask = PALMAS_INT4_STATUS_GPIO_6,
239	.reg_offset = 3,
240	},
241	[PALMAS_GPIO_7_IRQ] = {
242	.mask = PALMAS_INT4_STATUS_GPIO_7,
243	.reg_offset = 3,
244	},
245	};
246
247	static struct regmap_irq_chip palmas_irq_chip = {
248	.name = "palmas",
249	.irqs = palmas_irqs,
250	.num_irqs = ARRAY_SIZE(palmas_irqs),
251
252	.num_regs = 4,
253	.irq_reg_stride = 5,
254	.status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
255	PALMAS_INT1_STATUS),
256	.mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
257	PALMAS_INT1_MASK),
258	};
259
df545d1c	260	static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
9c14ac33 GG	261	struct palmas_platform_data *pdata)
9c14ac33 GG	262	{
df545d1c LD	263	struct irq_data *irq_data = irq_get_irq_data(i2c->irq);
	264	if (!irq_data) {
	265	dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq);
	266	return -EINVAL;
	267	}
	268
	269	pdata->irq_flags = irqd_get_trigger_type(irq_data);
	270	dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags);
	271	return 0;
	272	}
	273
	274	static void palmas_dt_to_pdata(struct i2c_client *i2c,
	275	struct palmas_platform_data *pdata)
	276	{
	277	struct device_node *node = i2c->dev.of_node;
9c14ac33 GG	278	int ret;
	279	u32 prop;
	280
2154a2b3	281	ret = of_property_read_u32(node, "ti,mux-pad1", &prop);
9c14ac33 GG	282	if (!ret) {
	283	pdata->mux_from_pdata = 1;
	284	pdata->pad1 = prop;
	285	}
	286
2154a2b3	287	ret = of_property_read_u32(node, "ti,mux-pad2", &prop);
9c14ac33 GG	288	if (!ret) {
	289	pdata->mux_from_pdata = 1;
	290	pdata->pad2 = prop;
	291	}
	292
	293	/* The default for this register is all masked */
2154a2b3	294	ret = of_property_read_u32(node, "ti,power-ctrl", &prop);
9c14ac33 GG	295	if (!ret)
	296	pdata->power_ctrl = prop;
	297	else
	298	pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK \|
	299	PALMAS_POWER_CTRL_ENABLE1_MASK \|
	300	PALMAS_POWER_CTRL_ENABLE2_MASK;
df545d1c LD	301	if (i2c->irq)
df545d1c LD	302	palmas_set_pdata_irq_flag(i2c, pdata);
9c14ac33 GG	303	}
9c14ac33 GG	304
f791be49	305	static int palmas_i2c_probe(struct i2c_client *i2c,
2945fbc2 GG	306	const struct i2c_device_id *id)
	307	{
	308	struct palmas *palmas;
	309	struct palmas_platform_data *pdata;
9c14ac33	310	struct device_node *node = i2c->dev.of_node;
2945fbc2 GG	311	int ret = 0, i;
	312	unsigned int reg, addr;
	313	int slave;
	314	struct mfd_cell *children;
	315
	316	pdata = dev_get_platdata(&i2c->dev);
9c14ac33 GG	317
	318	if (node && !pdata) {
	319	pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
	320
	321	if (!pdata)
	322	return -ENOMEM;
	323
df545d1c	324	palmas_dt_to_pdata(i2c, pdata);
9c14ac33 GG	325	}
9c14ac33 GG	326
2945fbc2 GG	327	if (!pdata)
	328	return -EINVAL;
	329
	330	palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL);
	331	if (palmas == NULL)
	332	return -ENOMEM;
	333
	334	i2c_set_clientdata(i2c, palmas);
	335	palmas->dev = &i2c->dev;
	336	palmas->id = id->driver_data;
	337	palmas->irq = i2c->irq;
	338
	339	for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
	340	if (i == 0)
	341	palmas->i2c_clients[i] = i2c;
	342	else {
	343	palmas->i2c_clients[i] =
	344	i2c_new_dummy(i2c->adapter,
	345	i2c->addr + i);
	346	if (!palmas->i2c_clients[i]) {
	347	dev_err(palmas->dev,
	348	"can't attach client %d\n", i);
	349	ret = -ENOMEM;
	350	goto err;
	351	}
	352	}
	353	palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i],
	354	&palmas_regmap_config[i]);
	355	if (IS_ERR(palmas->regmap[i])) {
	356	ret = PTR_ERR(palmas->regmap[i]);
	357	dev_err(palmas->dev,
	358	"Failed to allocate regmap %d, err: %d\n",
	359	i, ret);
	360	goto err;
	361	}
	362	}
	363
df545d1c LD	364	/* Change interrupt line output polarity */
	365	if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH)
	366	reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
	367	else
	368	reg = 0;
	369	ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
	370	PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
	371	reg);
	372	if (ret < 0) {
	373	dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret);
	374	goto err;
	375	}
	376
b330f85d GG	377	/* Change IRQ into clear on read mode for efficiency */
	378	slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
	379	addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
	380	reg = PALMAS_INT_CTRL_INT_CLEAR;
	381
	382	regmap_write(palmas->regmap[slave], addr, reg);
	383
	384	ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
df545d1c	385	IRQF_ONESHOT \| pdata->irq_flags, 0, &palmas_irq_chip,
2945fbc2 GG	386	&palmas->irq_data);
	387	if (ret < 0)
	388	goto err;
	389
	390	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
	391	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	392	PALMAS_PRIMARY_SECONDARY_PAD1);
	393
	394	if (pdata->mux_from_pdata) {
	395	reg = pdata->pad1;
	396	ret = regmap_write(palmas->regmap[slave], addr, reg);
	397	if (ret)
3f78decc	398	goto err_irq;
2945fbc2 GG	399	} else {
	400	ret = regmap_read(palmas->regmap[slave], addr, &reg);
	401	if (ret)
3f78decc	402	goto err_irq;
2945fbc2 GG	403	}
	404
	405	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
	406	palmas->gpio_muxed \|= PALMAS_GPIO_0_MUXED;
	407	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK))
	408	palmas->gpio_muxed \|= PALMAS_GPIO_1_MUXED;
	409	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
	410	(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
	411	palmas->led_muxed \|= PALMAS_LED1_MUXED;
	412	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
	413	(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
	414	palmas->pwm_muxed \|= PALMAS_PWM1_MUXED;
	415	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK))
	416	palmas->gpio_muxed \|= PALMAS_GPIO_2_MUXED;
	417	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
	418	(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
	419	palmas->led_muxed \|= PALMAS_LED2_MUXED;
	420	else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
	421	(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
	422	palmas->pwm_muxed \|= PALMAS_PWM2_MUXED;
	423	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
	424	palmas->gpio_muxed \|= PALMAS_GPIO_3_MUXED;
	425
	426	addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
	427	PALMAS_PRIMARY_SECONDARY_PAD2);
	428
	429	if (pdata->mux_from_pdata) {
	430	reg = pdata->pad2;
	431	ret = regmap_write(palmas->regmap[slave], addr, reg);
	432	if (ret)
3f78decc	433	goto err_irq;
2945fbc2 GG	434	} else {
	435	ret = regmap_read(palmas->regmap[slave], addr, &reg);
	436	if (ret)
3f78decc	437	goto err_irq;
2945fbc2 GG	438	}
	439
	440	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
	441	palmas->gpio_muxed \|= PALMAS_GPIO_4_MUXED;
	442	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK))
	443	palmas->gpio_muxed \|= PALMAS_GPIO_5_MUXED;
	444	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6))
	445	palmas->gpio_muxed \|= PALMAS_GPIO_6_MUXED;
	446	if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK))
	447	palmas->gpio_muxed \|= PALMAS_GPIO_7_MUXED;
	448
	449	dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n",
	450	palmas->gpio_muxed, palmas->pwm_muxed,
	451	palmas->led_muxed);
	452
	453	reg = pdata->power_ctrl;
	454
	455	slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
	456	addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);
	457
	458	ret = regmap_write(palmas->regmap[slave], addr, reg);
	459	if (ret)
3f78decc	460	goto err_irq;
2945fbc2	461
9c14ac33 GG	462	/*
	463	* If we are probing with DT do this the DT way and return here
	464	* otherwise continue and add devices using mfd helpers.
	465	*/
	466	if (node) {
	467	ret = of_platform_populate(node, NULL, NULL, &i2c->dev);
	468	if (ret < 0)
	469	goto err_irq;
	470	else
	471	return ret;
	472	}
	473
2945fbc2 GG	474	children = kmemdup(palmas_children, sizeof(palmas_children),
	475	GFP_KERNEL);
	476	if (!children) {
	477	ret = -ENOMEM;
3f78decc	478	goto err_irq;
2945fbc2 GG	479	}
2945fbc2 GG	480
adc20e02 GG	481	children[PALMAS_PMIC_ID].platform_data = pdata->pmic_pdata;
	482	children[PALMAS_PMIC_ID].pdata_size = sizeof(*pdata->pmic_pdata);
	483
190ef1a6 GG	484	children[PALMAS_GPADC_ID].platform_data = pdata->gpadc_pdata;
	485	children[PALMAS_GPADC_ID].pdata_size = sizeof(*pdata->gpadc_pdata);
	486
	487	children[PALMAS_RESOURCE_ID].platform_data = pdata->resource_pdata;
	488	children[PALMAS_RESOURCE_ID].pdata_size =
	489	sizeof(*pdata->resource_pdata);
	490
	491	children[PALMAS_USB_ID].platform_data = pdata->usb_pdata;
	492	children[PALMAS_USB_ID].pdata_size = sizeof(*pdata->usb_pdata);
	493
	494	children[PALMAS_CLK_ID].platform_data = pdata->clk_pdata;
	495	children[PALMAS_CLK_ID].pdata_size = sizeof(*pdata->clk_pdata);
	496
2945fbc2 GG	497	ret = mfd_add_devices(palmas->dev, -1,
2945fbc2 GG	498	children, ARRAY_SIZE(palmas_children),
a36516b0 LD	499	NULL, 0,
a36516b0 LD	500	regmap_irq_get_domain(palmas->irq_data));
2945fbc2 GG	501	kfree(children);
	502
	503	if (ret < 0)
3f78decc	504	goto err_devices;
2945fbc2 GG	505
	506	return ret;
	507
3f78decc	508	err_devices:
2945fbc2	509	mfd_remove_devices(palmas->dev);
3f78decc GG	510	err_irq:
	511	regmap_del_irq_chip(palmas->irq, palmas->irq_data);
	512	err:
2945fbc2 GG	513	return ret;
	514	}
	515
	516	static int palmas_i2c_remove(struct i2c_client *i2c)
	517	{
	518	struct palmas *palmas = i2c_get_clientdata(i2c);
	519
	520	mfd_remove_devices(palmas->dev);
	521	regmap_del_irq_chip(palmas->irq, palmas->irq_data);
	522
	523	return 0;
	524	}
	525
	526	static const struct i2c_device_id palmas_i2c_id[] = {
	527	{ "palmas", },
	528	{ "twl6035", },
	529	{ "twl6037", },
	530	{ "tps65913", },
00ba81c1	531	{ /* end */ }
2945fbc2 GG	532	};
	533	MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
	534
a9e9ce4c	535	static struct of_device_id of_palmas_match_tbl[] = {
2945fbc2 GG	536	{ .compatible = "ti,palmas", },
	537	{ /* end */ }
	538	};
	539
	540	static struct i2c_driver palmas_i2c_driver = {
	541	.driver = {
	542	.name = "palmas",
	543	.of_match_table = of_palmas_match_tbl,
	544	.owner = THIS_MODULE,
	545	},
	546	.probe = palmas_i2c_probe,
	547	.remove = palmas_i2c_remove,
	548	.id_table = palmas_i2c_id,
	549	};
	550
	551	static int __init palmas_i2c_init(void)
	552	{
	553	return i2c_add_driver(&palmas_i2c_driver);
	554	}
	555	/* init early so consumer devices can complete system boot */
	556	subsys_initcall(palmas_i2c_init);
	557
	558	static void __exit palmas_i2c_exit(void)
	559	{
	560	i2c_del_driver(&palmas_i2c_driver);
	561	}
	562	module_exit(palmas_i2c_exit);
	563
	564	MODULE_AUTHOR("Graeme Gregory <[email protected]>");
	565	MODULE_DESCRIPTION("Palmas chip family multi-function driver");
	566	MODULE_LICENSE("GPL");