[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>

static const struct resource gpadc_resource[] = {
	{
		.name = "EOC_SW",
		.start = PALMAS_GPADC_EOC_SW_IRQ,
		.end = PALMAS_GPADC_EOC_SW_IRQ,
		.flags = IORESOURCE_IRQ,
	}
};

static const struct resource usb_resource[] = {
	{
		.name = "ID",
		.start = PALMAS_ID_OTG_IRQ,
		.end = PALMAS_ID_OTG_IRQ,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name = "ID_WAKEUP",
		.start = PALMAS_ID_IRQ,
		.end = PALMAS_ID_IRQ,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name = "VBUS",
		.start = PALMAS_VBUS_OTG_IRQ,
		.end = PALMAS_VBUS_OTG_IRQ,
		.flags = IORESOURCE_IRQ,
	},
	{
		.name = "VBUS_WAKEUP",
		.start = PALMAS_VBUS_IRQ,
		.end = PALMAS_VBUS_IRQ,
		.flags = IORESOURCE_IRQ,
	},
};

static const struct resource rtc_resource[] = {
	{
		.name = "RTC_ALARM",
		.start = PALMAS_RTC_ALARM_IRQ,
		.end = PALMAS_RTC_ALARM_IRQ,
		.flags = IORESOURCE_IRQ,
	},
};

static const struct resource pwron_resource[] = {
	{
		.name = "PWRON_BUTTON",
		.start = PALMAS_PWRON_IRQ,
		.end = PALMAS_PWRON_IRQ,
		.flags = IORESOURCE_IRQ,
	},
};

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",
		.num_resources = ARRAY_SIZE(rtc_resource),
		.resources = rtc_resource,
		.id = PALMAS_RTC_ID,
	},
	{
		.name = "palmas-pwrbutton",
		.num_resources = ARRAY_SIZE(pwron_resource),
		.resources = pwron_resource,
		.id = PALMAS_PWRBUTTON_ID,
	},
	{
		.name = "palmas-gpadc",
		.num_resources = ARRAY_SIZE(gpadc_resource),
		.resources = gpadc_resource,
		.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",
		.num_resources = ARRAY_SIZE(usb_resource),
		.resources = usb_resource,
		.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 __devinit palmas_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct palmas *palmas;
	struct palmas_platform_data *pdata;
	int ret = 0, i;
	unsigned int reg, addr;
	int slave;
	struct mfd_cell *children;

	pdata = dev_get_platdata(&i2c->dev);
	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, -1, &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;
	} else {
		ret = regmap_read(palmas->regmap[slave], addr, &reg);
		if (ret)
			goto err;
	}

	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;
	} else {
		ret = regmap_read(palmas->regmap[slave], addr, &reg);
		if (ret)
			goto err;
	}

	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;

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

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

	return ret;

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