[linux-2.6-block.git] / drivers / gpio / gpio-lpc32xx.c

/*
 * GPIO driver for LPC32xx SoC
 *
 * Author: Kevin Wells <kevin.wells@nxp.com>
 *
 * Copyright (C) 2010 NXP Semiconductors
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/platform_data/gpio-lpc32xx.h>

#include <mach/hardware.h>
#include <mach/platform.h>
#include <mach/irqs.h>

#define LPC32XX_GPIO_P3_INP_STATE		_GPREG(0x000)
#define LPC32XX_GPIO_P3_OUTP_SET		_GPREG(0x004)
#define LPC32XX_GPIO_P3_OUTP_CLR		_GPREG(0x008)
#define LPC32XX_GPIO_P3_OUTP_STATE		_GPREG(0x00C)
#define LPC32XX_GPIO_P2_DIR_SET			_GPREG(0x010)
#define LPC32XX_GPIO_P2_DIR_CLR			_GPREG(0x014)
#define LPC32XX_GPIO_P2_DIR_STATE		_GPREG(0x018)
#define LPC32XX_GPIO_P2_INP_STATE		_GPREG(0x01C)
#define LPC32XX_GPIO_P2_OUTP_SET		_GPREG(0x020)
#define LPC32XX_GPIO_P2_OUTP_CLR		_GPREG(0x024)
#define LPC32XX_GPIO_P2_MUX_SET			_GPREG(0x028)
#define LPC32XX_GPIO_P2_MUX_CLR			_GPREG(0x02C)
#define LPC32XX_GPIO_P2_MUX_STATE		_GPREG(0x030)
#define LPC32XX_GPIO_P0_INP_STATE		_GPREG(0x040)
#define LPC32XX_GPIO_P0_OUTP_SET		_GPREG(0x044)
#define LPC32XX_GPIO_P0_OUTP_CLR		_GPREG(0x048)
#define LPC32XX_GPIO_P0_OUTP_STATE		_GPREG(0x04C)
#define LPC32XX_GPIO_P0_DIR_SET			_GPREG(0x050)
#define LPC32XX_GPIO_P0_DIR_CLR			_GPREG(0x054)
#define LPC32XX_GPIO_P0_DIR_STATE		_GPREG(0x058)
#define LPC32XX_GPIO_P1_INP_STATE		_GPREG(0x060)
#define LPC32XX_GPIO_P1_OUTP_SET		_GPREG(0x064)
#define LPC32XX_GPIO_P1_OUTP_CLR		_GPREG(0x068)
#define LPC32XX_GPIO_P1_OUTP_STATE		_GPREG(0x06C)
#define LPC32XX_GPIO_P1_DIR_SET			_GPREG(0x070)
#define LPC32XX_GPIO_P1_DIR_CLR			_GPREG(0x074)
#define LPC32XX_GPIO_P1_DIR_STATE		_GPREG(0x078)

#define GPIO012_PIN_TO_BIT(x)			(1 << (x))
#define GPIO3_PIN_TO_BIT(x)			(1 << ((x) + 25))
#define GPO3_PIN_TO_BIT(x)			(1 << (x))
#define GPIO012_PIN_IN_SEL(x, y)		(((x) >> (y)) & 1)
#define GPIO3_PIN_IN_SHIFT(x)			((x) == 5 ? 24 : 10 + (x))
#define GPIO3_PIN_IN_SEL(x, y)			(((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1)
#define GPIO3_PIN5_IN_SEL(x)			(((x) >> 24) & 1)
#define GPI3_PIN_IN_SEL(x, y)			(((x) >> (y)) & 1)
#define GPO3_PIN_IN_SEL(x, y)			(((x) >> (y)) & 1)

struct gpio_regs {
	void __iomem *inp_state;
	void __iomem *outp_state;
	void __iomem *outp_set;
	void __iomem *outp_clr;
	void __iomem *dir_set;
	void __iomem *dir_clr;
};

/*
 * GPIO names
 */
static const char *gpio_p0_names[LPC32XX_GPIO_P0_MAX] = {
	"p0.0", "p0.1", "p0.2", "p0.3",
	"p0.4", "p0.5", "p0.6", "p0.7"
};

static const char *gpio_p1_names[LPC32XX_GPIO_P1_MAX] = {
	"p1.0", "p1.1", "p1.2", "p1.3",
	"p1.4", "p1.5", "p1.6", "p1.7",
	"p1.8", "p1.9", "p1.10", "p1.11",
	"p1.12", "p1.13", "p1.14", "p1.15",
	"p1.16", "p1.17", "p1.18", "p1.19",
	"p1.20", "p1.21", "p1.22", "p1.23",
};

static const char *gpio_p2_names[LPC32XX_GPIO_P2_MAX] = {
	"p2.0", "p2.1", "p2.2", "p2.3",
	"p2.4", "p2.5", "p2.6", "p2.7",
	"p2.8", "p2.9", "p2.10", "p2.11",
	"p2.12"
};

static const char *gpio_p3_names[LPC32XX_GPIO_P3_MAX] = {
	"gpio00", "gpio01", "gpio02", "gpio03",
	"gpio04", "gpio05"
};

static const char *gpi_p3_names[LPC32XX_GPI_P3_MAX] = {
	"gpi00", "gpi01", "gpi02", "gpi03",
	"gpi04", "gpi05", "gpi06", "gpi07",
	"gpi08", "gpi09",  NULL,    NULL,
	 NULL,    NULL,    NULL,   "gpi15",
	"gpi16", "gpi17", "gpi18", "gpi19",
	"gpi20", "gpi21", "gpi22", "gpi23",
	"gpi24", "gpi25", "gpi26", "gpi27",
	"gpi28"
};

static const char *gpo_p3_names[LPC32XX_GPO_P3_MAX] = {
	"gpo00", "gpo01", "gpo02", "gpo03",
	"gpo04", "gpo05", "gpo06", "gpo07",
	"gpo08", "gpo09", "gpo10", "gpo11",
	"gpo12", "gpo13", "gpo14", "gpo15",
	"gpo16", "gpo17", "gpo18", "gpo19",
	"gpo20", "gpo21", "gpo22", "gpo23"
};

static struct gpio_regs gpio_grp_regs_p0 = {
	.inp_state	= LPC32XX_GPIO_P0_INP_STATE,
	.outp_set	= LPC32XX_GPIO_P0_OUTP_SET,
	.outp_clr	= LPC32XX_GPIO_P0_OUTP_CLR,
	.dir_set	= LPC32XX_GPIO_P0_DIR_SET,
	.dir_clr	= LPC32XX_GPIO_P0_DIR_CLR,
};

static struct gpio_regs gpio_grp_regs_p1 = {
	.inp_state	= LPC32XX_GPIO_P1_INP_STATE,
	.outp_set	= LPC32XX_GPIO_P1_OUTP_SET,
	.outp_clr	= LPC32XX_GPIO_P1_OUTP_CLR,
	.dir_set	= LPC32XX_GPIO_P1_DIR_SET,
	.dir_clr	= LPC32XX_GPIO_P1_DIR_CLR,
};

static struct gpio_regs gpio_grp_regs_p2 = {
	.inp_state	= LPC32XX_GPIO_P2_INP_STATE,
	.outp_set	= LPC32XX_GPIO_P2_OUTP_SET,
	.outp_clr	= LPC32XX_GPIO_P2_OUTP_CLR,
	.dir_set	= LPC32XX_GPIO_P2_DIR_SET,
	.dir_clr	= LPC32XX_GPIO_P2_DIR_CLR,
};

static struct gpio_regs gpio_grp_regs_p3 = {
	.inp_state	= LPC32XX_GPIO_P3_INP_STATE,
	.outp_state	= LPC32XX_GPIO_P3_OUTP_STATE,
	.outp_set	= LPC32XX_GPIO_P3_OUTP_SET,
	.outp_clr	= LPC32XX_GPIO_P3_OUTP_CLR,
	.dir_set	= LPC32XX_GPIO_P2_DIR_SET,
	.dir_clr	= LPC32XX_GPIO_P2_DIR_CLR,
};

struct lpc32xx_gpio_chip {
	struct gpio_chip	chip;
	struct gpio_regs	*gpio_grp;
};

static inline struct lpc32xx_gpio_chip *to_lpc32xx_gpio(
	struct gpio_chip *gpc)
{
	return container_of(gpc, struct lpc32xx_gpio_chip, chip);
}

static void __set_gpio_dir_p012(struct lpc32xx_gpio_chip *group,
	unsigned pin, int input)
{
	if (input)
		__raw_writel(GPIO012_PIN_TO_BIT(pin),
			group->gpio_grp->dir_clr);
	else
		__raw_writel(GPIO012_PIN_TO_BIT(pin),
			group->gpio_grp->dir_set);
}

static void __set_gpio_dir_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin, int input)
{
	u32 u = GPIO3_PIN_TO_BIT(pin);

	if (input)
		__raw_writel(u, group->gpio_grp->dir_clr);
	else
		__raw_writel(u, group->gpio_grp->dir_set);
}

static void __set_gpio_level_p012(struct lpc32xx_gpio_chip *group,
	unsigned pin, int high)
{
	if (high)
		__raw_writel(GPIO012_PIN_TO_BIT(pin),
			group->gpio_grp->outp_set);
	else
		__raw_writel(GPIO012_PIN_TO_BIT(pin),
			group->gpio_grp->outp_clr);
}

static void __set_gpio_level_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin, int high)
{
	u32 u = GPIO3_PIN_TO_BIT(pin);

	if (high)
		__raw_writel(u, group->gpio_grp->outp_set);
	else
		__raw_writel(u, group->gpio_grp->outp_clr);
}

static void __set_gpo_level_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin, int high)
{
	if (high)
		__raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_set);
	else
		__raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_clr);
}

static int __get_gpio_state_p012(struct lpc32xx_gpio_chip *group,
	unsigned pin)
{
	return GPIO012_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state),
		pin);
}

static int __get_gpio_state_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin)
{
	int state = __raw_readl(group->gpio_grp->inp_state);

	/*
	 * P3 GPIO pin input mapping is not contiguous, GPIOP3-0..4 is mapped
	 * to bits 10..14, while GPIOP3-5 is mapped to bit 24.
	 */
	return GPIO3_PIN_IN_SEL(state, pin);
}

static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin)
{
	return GPI3_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state), pin);
}

static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group,
	unsigned pin)
{
	return GPO3_PIN_IN_SEL(__raw_readl(group->gpio_grp->outp_state), pin);
}

/*
 * GPIO primitives.
 */
static int lpc32xx_gpio_dir_input_p012(struct gpio_chip *chip,
	unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_dir_p012(group, pin, 1);

	return 0;
}

static int lpc32xx_gpio_dir_input_p3(struct gpio_chip *chip,
	unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_dir_p3(group, pin, 1);

	return 0;
}

static int lpc32xx_gpio_dir_in_always(struct gpio_chip *chip,
	unsigned pin)
{
	return 0;
}

static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	return __get_gpio_state_p012(group, pin);
}

static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	return __get_gpio_state_p3(group, pin);
}

static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	return __get_gpi_state_p3(group, pin);
}

static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_level_p012(group, pin, value);
	__set_gpio_dir_p012(group, pin, 0);

	return 0;
}

static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_level_p3(group, pin, value);
	__set_gpio_dir_p3(group, pin, 0);

	return 0;
}

static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpo_level_p3(group, pin, value);
	return 0;
}

static void lpc32xx_gpio_set_value_p012(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_level_p012(group, pin, value);
}

static void lpc32xx_gpio_set_value_p3(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpio_level_p3(group, pin, value);
}

static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin,
	int value)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	__set_gpo_level_p3(group, pin, value);
}

static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin)
{
	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);

	return __get_gpo_state_p3(group, pin);
}

static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)
{
	if (pin < chip->ngpio)
		return 0;

	return -EINVAL;
}

static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset)
{
	return IRQ_LPC32XX_P0_P1_IRQ;
}

static const char lpc32xx_gpio_to_irq_gpio_p3_table[] = {
	IRQ_LPC32XX_GPIO_00,
	IRQ_LPC32XX_GPIO_01,
	IRQ_LPC32XX_GPIO_02,
	IRQ_LPC32XX_GPIO_03,
	IRQ_LPC32XX_GPIO_04,
	IRQ_LPC32XX_GPIO_05,
};

static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset)
{
	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpio_p3_table))
		return lpc32xx_gpio_to_irq_gpio_p3_table[offset];
	return -ENXIO;
}

static const char lpc32xx_gpio_to_irq_gpi_p3_table[] = {
	IRQ_LPC32XX_GPI_00,
	IRQ_LPC32XX_GPI_01,
	IRQ_LPC32XX_GPI_02,
	IRQ_LPC32XX_GPI_03,
	IRQ_LPC32XX_GPI_04,
	IRQ_LPC32XX_GPI_05,
	IRQ_LPC32XX_GPI_06,
	IRQ_LPC32XX_GPI_07,
	IRQ_LPC32XX_GPI_08,
	IRQ_LPC32XX_GPI_09,
	-ENXIO, /* 10 */
	-ENXIO, /* 11 */
	-ENXIO, /* 12 */
	-ENXIO, /* 13 */
	-ENXIO, /* 14 */
	-ENXIO, /* 15 */
	-ENXIO, /* 16 */
	-ENXIO, /* 17 */
	-ENXIO, /* 18 */
	IRQ_LPC32XX_GPI_19,
	-ENXIO, /* 20 */
	-ENXIO, /* 21 */
	-ENXIO, /* 22 */
	-ENXIO, /* 23 */
	-ENXIO, /* 24 */
	-ENXIO, /* 25 */
	-ENXIO, /* 26 */
	-ENXIO, /* 27 */
	IRQ_LPC32XX_GPI_28,
};

static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset)
{
	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpi_p3_table))
		return lpc32xx_gpio_to_irq_gpi_p3_table[offset];
	return -ENXIO;
}

static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
	{
		.chip = {
			.label			= "gpio_p0",
			.direction_input	= lpc32xx_gpio_dir_input_p012,
			.get			= lpc32xx_gpio_get_value_p012,
			.direction_output	= lpc32xx_gpio_dir_output_p012,
			.set			= lpc32xx_gpio_set_value_p012,
			.request		= lpc32xx_gpio_request,
			.to_irq			= lpc32xx_gpio_to_irq_p01,
			.base			= LPC32XX_GPIO_P0_GRP,
			.ngpio			= LPC32XX_GPIO_P0_MAX,
			.names			= gpio_p0_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p0,
	},
	{
		.chip = {
			.label			= "gpio_p1",
			.direction_input	= lpc32xx_gpio_dir_input_p012,
			.get			= lpc32xx_gpio_get_value_p012,
			.direction_output	= lpc32xx_gpio_dir_output_p012,
			.set			= lpc32xx_gpio_set_value_p012,
			.request		= lpc32xx_gpio_request,
			.to_irq			= lpc32xx_gpio_to_irq_p01,
			.base			= LPC32XX_GPIO_P1_GRP,
			.ngpio			= LPC32XX_GPIO_P1_MAX,
			.names			= gpio_p1_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p1,
	},
	{
		.chip = {
			.label			= "gpio_p2",
			.direction_input	= lpc32xx_gpio_dir_input_p012,
			.get			= lpc32xx_gpio_get_value_p012,
			.direction_output	= lpc32xx_gpio_dir_output_p012,
			.set			= lpc32xx_gpio_set_value_p012,
			.request		= lpc32xx_gpio_request,
			.base			= LPC32XX_GPIO_P2_GRP,
			.ngpio			= LPC32XX_GPIO_P2_MAX,
			.names			= gpio_p2_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p2,
	},
	{
		.chip = {
			.label			= "gpio_p3",
			.direction_input	= lpc32xx_gpio_dir_input_p3,
			.get			= lpc32xx_gpio_get_value_p3,
			.direction_output	= lpc32xx_gpio_dir_output_p3,
			.set			= lpc32xx_gpio_set_value_p3,
			.request		= lpc32xx_gpio_request,
			.to_irq			= lpc32xx_gpio_to_irq_gpio_p3,
			.base			= LPC32XX_GPIO_P3_GRP,
			.ngpio			= LPC32XX_GPIO_P3_MAX,
			.names			= gpio_p3_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p3,
	},
	{
		.chip = {
			.label			= "gpi_p3",
			.direction_input	= lpc32xx_gpio_dir_in_always,
			.get			= lpc32xx_gpi_get_value,
			.request		= lpc32xx_gpio_request,
			.to_irq			= lpc32xx_gpio_to_irq_gpi_p3,
			.base			= LPC32XX_GPI_P3_GRP,
			.ngpio			= LPC32XX_GPI_P3_MAX,
			.names			= gpi_p3_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p3,
	},
	{
		.chip = {
			.label			= "gpo_p3",
			.direction_output	= lpc32xx_gpio_dir_out_always,
			.set			= lpc32xx_gpo_set_value,
			.get			= lpc32xx_gpo_get_value,
			.request		= lpc32xx_gpio_request,
			.base			= LPC32XX_GPO_P3_GRP,
			.ngpio			= LPC32XX_GPO_P3_MAX,
			.names			= gpo_p3_names,
			.can_sleep		= false,
		},
		.gpio_grp = &gpio_grp_regs_p3,
	},
};

static int lpc32xx_of_xlate(struct gpio_chip *gc,
			    const struct of_phandle_args *gpiospec, u32 *flags)
{
	/* Is this the correct bank? */
	u32 bank = gpiospec->args[0];
	if ((bank >= ARRAY_SIZE(lpc32xx_gpiochip) ||
	    (gc != &lpc32xx_gpiochip[bank].chip)))
		return -EINVAL;

	if (flags)
		*flags = gpiospec->args[2];
	return gpiospec->args[1];
}

static int lpc32xx_gpio_probe(struct platform_device *pdev)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(lpc32xx_gpiochip); i++) {
		if (pdev->dev.of_node) {
			lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate;
			lpc32xx_gpiochip[i].chip.of_gpio_n_cells = 3;
			lpc32xx_gpiochip[i].chip.of_node = pdev->dev.of_node;
		}
		gpiochip_add(&lpc32xx_gpiochip[i].chip);
	}

	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id lpc32xx_gpio_of_match[] = {
	{ .compatible = "nxp,lpc3220-gpio", },
	{ },
};
#endif

static struct platform_driver lpc32xx_gpio_driver = {
	.driver		= {
		.name	= "lpc32xx-gpio",
		.of_match_table = of_match_ptr(lpc32xx_gpio_of_match),
	},
	.probe		= lpc32xx_gpio_probe,
};

module_platform_driver(lpc32xx_gpio_driver);
Commit	Line	Data
c4a0208f	1	/*
da03d740	2	* GPIO driver for LPC32xx SoC
c4a0208f KW	3	*
	4	* Author: Kevin Wells <kevin.wells@nxp.com>
	5	*
	6	* Copyright (C) 2010 NXP Semiconductors
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/init.h>
	21	#include <linux/io.h>
	22	#include <linux/errno.h>
	23	#include <linux/gpio.h>
831cbd7a	24	#include <linux/of.h>
e92935e1 RS	25	#include <linux/of_gpio.h>
	26	#include <linux/platform_device.h>
	27	#include <linux/module.h>
eef80f33	28	#include <linux/platform_data/gpio-lpc32xx.h>
c4a0208f KW	29
	30	#include <mach/hardware.h>
	31	#include <mach/platform.h>
0bdfeddc	32	#include <mach/irqs.h>
c4a0208f KW	33
	34	#define LPC32XX_GPIO_P3_INP_STATE _GPREG(0x000)
	35	#define LPC32XX_GPIO_P3_OUTP_SET _GPREG(0x004)
	36	#define LPC32XX_GPIO_P3_OUTP_CLR _GPREG(0x008)
	37	#define LPC32XX_GPIO_P3_OUTP_STATE _GPREG(0x00C)
	38	#define LPC32XX_GPIO_P2_DIR_SET _GPREG(0x010)
	39	#define LPC32XX_GPIO_P2_DIR_CLR _GPREG(0x014)
	40	#define LPC32XX_GPIO_P2_DIR_STATE _GPREG(0x018)
	41	#define LPC32XX_GPIO_P2_INP_STATE _GPREG(0x01C)
	42	#define LPC32XX_GPIO_P2_OUTP_SET _GPREG(0x020)
	43	#define LPC32XX_GPIO_P2_OUTP_CLR _GPREG(0x024)
	44	#define LPC32XX_GPIO_P2_MUX_SET _GPREG(0x028)
	45	#define LPC32XX_GPIO_P2_MUX_CLR _GPREG(0x02C)
	46	#define LPC32XX_GPIO_P2_MUX_STATE _GPREG(0x030)
	47	#define LPC32XX_GPIO_P0_INP_STATE _GPREG(0x040)
	48	#define LPC32XX_GPIO_P0_OUTP_SET _GPREG(0x044)
	49	#define LPC32XX_GPIO_P0_OUTP_CLR _GPREG(0x048)
	50	#define LPC32XX_GPIO_P0_OUTP_STATE _GPREG(0x04C)
	51	#define LPC32XX_GPIO_P0_DIR_SET _GPREG(0x050)
	52	#define LPC32XX_GPIO_P0_DIR_CLR _GPREG(0x054)
	53	#define LPC32XX_GPIO_P0_DIR_STATE _GPREG(0x058)
	54	#define LPC32XX_GPIO_P1_INP_STATE _GPREG(0x060)
	55	#define LPC32XX_GPIO_P1_OUTP_SET _GPREG(0x064)
	56	#define LPC32XX_GPIO_P1_OUTP_CLR _GPREG(0x068)
	57	#define LPC32XX_GPIO_P1_OUTP_STATE _GPREG(0x06C)
	58	#define LPC32XX_GPIO_P1_DIR_SET _GPREG(0x070)
	59	#define LPC32XX_GPIO_P1_DIR_CLR _GPREG(0x074)
	60	#define LPC32XX_GPIO_P1_DIR_STATE _GPREG(0x078)
	61
	62	#define GPIO012_PIN_TO_BIT(x) (1 << (x))
	63	#define GPIO3_PIN_TO_BIT(x) (1 << ((x) + 25))
	64	#define GPO3_PIN_TO_BIT(x) (1 << (x))
	65	#define GPIO012_PIN_IN_SEL(x, y) (((x) >> (y)) & 1)
	66	#define GPIO3_PIN_IN_SHIFT(x) ((x) == 5 ? 24 : 10 + (x))
8e5fb37b	67	#define GPIO3_PIN_IN_SEL(x, y) (((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1)
c4a0208f KW	68	#define GPIO3_PIN5_IN_SEL(x) (((x) >> 24) & 1)
c4a0208f KW	69	#define GPI3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1)
46158aad	70	#define GPO3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1)
c4a0208f KW	71
	72	struct gpio_regs {
	73	void __iomem *inp_state;
46158aad	74	void __iomem *outp_state;
c4a0208f KW	75	void __iomem *outp_set;
	76	void __iomem *outp_clr;
	77	void __iomem *dir_set;
	78	void __iomem *dir_clr;
	79	};
	80
	81	/*
	82	* GPIO names
	83	*/
	84	static const char *gpio_p0_names[LPC32XX_GPIO_P0_MAX] = {
	85	"p0.0", "p0.1", "p0.2", "p0.3",
	86	"p0.4", "p0.5", "p0.6", "p0.7"
	87	};
	88
	89	static const char *gpio_p1_names[LPC32XX_GPIO_P1_MAX] = {
	90	"p1.0", "p1.1", "p1.2", "p1.3",
	91	"p1.4", "p1.5", "p1.6", "p1.7",
	92	"p1.8", "p1.9", "p1.10", "p1.11",
	93	"p1.12", "p1.13", "p1.14", "p1.15",
	94	"p1.16", "p1.17", "p1.18", "p1.19",
	95	"p1.20", "p1.21", "p1.22", "p1.23",
	96	};
	97
	98	static const char *gpio_p2_names[LPC32XX_GPIO_P2_MAX] = {
	99	"p2.0", "p2.1", "p2.2", "p2.3",
	100	"p2.4", "p2.5", "p2.6", "p2.7",
	101	"p2.8", "p2.9", "p2.10", "p2.11",
	102	"p2.12"
	103	};
	104
	105	static const char *gpio_p3_names[LPC32XX_GPIO_P3_MAX] = {
95120d5d	106	"gpio00", "gpio01", "gpio02", "gpio03",
c4a0208f KW	107	"gpio04", "gpio05"
	108	};
	109
	110	static const char *gpi_p3_names[LPC32XX_GPI_P3_MAX] = {
	111	"gpi00", "gpi01", "gpi02", "gpi03",
	112	"gpi04", "gpi05", "gpi06", "gpi07",
	113	"gpi08", "gpi09", NULL, NULL,
	114	NULL, NULL, NULL, "gpi15",
	115	"gpi16", "gpi17", "gpi18", "gpi19",
	116	"gpi20", "gpi21", "gpi22", "gpi23",
71fde000 RS	117	"gpi24", "gpi25", "gpi26", "gpi27",
71fde000 RS	118	"gpi28"
c4a0208f KW	119	};
	120
	121	static const char *gpo_p3_names[LPC32XX_GPO_P3_MAX] = {
	122	"gpo00", "gpo01", "gpo02", "gpo03",
	123	"gpo04", "gpo05", "gpo06", "gpo07",
	124	"gpo08", "gpo09", "gpo10", "gpo11",
	125	"gpo12", "gpo13", "gpo14", "gpo15",
	126	"gpo16", "gpo17", "gpo18", "gpo19",
	127	"gpo20", "gpo21", "gpo22", "gpo23"
	128	};
	129
	130	static struct gpio_regs gpio_grp_regs_p0 = {
	131	.inp_state = LPC32XX_GPIO_P0_INP_STATE,
	132	.outp_set = LPC32XX_GPIO_P0_OUTP_SET,
	133	.outp_clr = LPC32XX_GPIO_P0_OUTP_CLR,
	134	.dir_set = LPC32XX_GPIO_P0_DIR_SET,
	135	.dir_clr = LPC32XX_GPIO_P0_DIR_CLR,
	136	};
	137
	138	static struct gpio_regs gpio_grp_regs_p1 = {
	139	.inp_state = LPC32XX_GPIO_P1_INP_STATE,
	140	.outp_set = LPC32XX_GPIO_P1_OUTP_SET,
	141	.outp_clr = LPC32XX_GPIO_P1_OUTP_CLR,
	142	.dir_set = LPC32XX_GPIO_P1_DIR_SET,
	143	.dir_clr = LPC32XX_GPIO_P1_DIR_CLR,
	144	};
	145
	146	static struct gpio_regs gpio_grp_regs_p2 = {
	147	.inp_state = LPC32XX_GPIO_P2_INP_STATE,
	148	.outp_set = LPC32XX_GPIO_P2_OUTP_SET,
	149	.outp_clr = LPC32XX_GPIO_P2_OUTP_CLR,
	150	.dir_set = LPC32XX_GPIO_P2_DIR_SET,
	151	.dir_clr = LPC32XX_GPIO_P2_DIR_CLR,
	152	};
	153
	154	static struct gpio_regs gpio_grp_regs_p3 = {
	155	.inp_state = LPC32XX_GPIO_P3_INP_STATE,
46158aad	156	.outp_state = LPC32XX_GPIO_P3_OUTP_STATE,
c4a0208f KW	157	.outp_set = LPC32XX_GPIO_P3_OUTP_SET,
	158	.outp_clr = LPC32XX_GPIO_P3_OUTP_CLR,
	159	.dir_set = LPC32XX_GPIO_P2_DIR_SET,
	160	.dir_clr = LPC32XX_GPIO_P2_DIR_CLR,
	161	};
	162
	163	struct lpc32xx_gpio_chip {
	164	struct gpio_chip chip;
	165	struct gpio_regs *gpio_grp;
	166	};
	167
	168	static inline struct lpc32xx_gpio_chip *to_lpc32xx_gpio(
	169	struct gpio_chip *gpc)
	170	{
	171	return container_of(gpc, struct lpc32xx_gpio_chip, chip);
	172	}
	173
	174	static void __set_gpio_dir_p012(struct lpc32xx_gpio_chip *group,
	175	unsigned pin, int input)
	176	{
	177	if (input)
	178	__raw_writel(GPIO012_PIN_TO_BIT(pin),
	179	group->gpio_grp->dir_clr);
	180	else
	181	__raw_writel(GPIO012_PIN_TO_BIT(pin),
	182	group->gpio_grp->dir_set);
	183	}
	184
	185	static void __set_gpio_dir_p3(struct lpc32xx_gpio_chip *group,
	186	unsigned pin, int input)
	187	{
	188	u32 u = GPIO3_PIN_TO_BIT(pin);
	189
	190	if (input)
	191	__raw_writel(u, group->gpio_grp->dir_clr);
	192	else
	193	__raw_writel(u, group->gpio_grp->dir_set);
	194	}
	195
	196	static void __set_gpio_level_p012(struct lpc32xx_gpio_chip *group,
	197	unsigned pin, int high)
	198	{
	199	if (high)
	200	__raw_writel(GPIO012_PIN_TO_BIT(pin),
	201	group->gpio_grp->outp_set);
	202	else
	203	__raw_writel(GPIO012_PIN_TO_BIT(pin),
	204	group->gpio_grp->outp_clr);
	205	}
	206
	207	static void __set_gpio_level_p3(struct lpc32xx_gpio_chip *group,
	208	unsigned pin, int high)
	209	{
	210	u32 u = GPIO3_PIN_TO_BIT(pin);
	211
	212	if (high)
	213	__raw_writel(u, group->gpio_grp->outp_set);
	214	else
	215	__raw_writel(u, group->gpio_grp->outp_clr);
	216	}
	217
	218	static void __set_gpo_level_p3(struct lpc32xx_gpio_chip *group,
	219	unsigned pin, int high)
	220	{
221	if (high)
222	__raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_set);
223	else
224	__raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_clr);
225	}
226
227	static int __get_gpio_state_p012(struct lpc32xx_gpio_chip *group,
228	unsigned pin)
229	{
230	return GPIO012_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state),
231	pin);
232	}
233
234	static int __get_gpio_state_p3(struct lpc32xx_gpio_chip *group,
235	unsigned pin)
236	{
237	int state = __raw_readl(group->gpio_grp->inp_state);
238
239	/*
240	* P3 GPIO pin input mapping is not contiguous, GPIOP3-0..4 is mapped
241	* to bits 10..14, while GPIOP3-5 is mapped to bit 24.
242	*/
243	return GPIO3_PIN_IN_SEL(state, pin);
244	}
245
246	static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group,
247	unsigned pin)
248	{
249	return GPI3_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state), pin);
250	}
251
46158aad RS	252	static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group,
	253	unsigned pin)
	254	{
	255	return GPO3_PIN_IN_SEL(__raw_readl(group->gpio_grp->outp_state), pin);
	256	}
	257
c4a0208f	258	/*
7fd2bf3d	259	* GPIO primitives.
c4a0208f KW	260	*/
	261	static int lpc32xx_gpio_dir_input_p012(struct gpio_chip *chip,
	262	unsigned pin)
	263	{
	264	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	265
	266	__set_gpio_dir_p012(group, pin, 1);
	267
	268	return 0;
	269	}
	270
	271	static int lpc32xx_gpio_dir_input_p3(struct gpio_chip *chip,
	272	unsigned pin)
	273	{
	274	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	275
	276	__set_gpio_dir_p3(group, pin, 1);
	277
	278	return 0;
	279	}
	280
	281	static int lpc32xx_gpio_dir_in_always(struct gpio_chip *chip,
	282	unsigned pin)
	283	{
	284	return 0;
	285	}
	286
	287	static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin)
	288	{
	289	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	290
	291	return __get_gpio_state_p012(group, pin);
	292	}
	293
	294	static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin)
	295	{
	296	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	297
	298	return __get_gpio_state_p3(group, pin);
	299	}
	300
	301	static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin)
	302	{
	303	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	304
	305	return __get_gpi_state_p3(group, pin);
	306	}
	307
	308	static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin,
	309	int value)
	310	{
	311	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	312
b1268d37	313	__set_gpio_level_p012(group, pin, value);
c4a0208f KW	314	__set_gpio_dir_p012(group, pin, 0);
	315
	316	return 0;
	317	}
	318
	319	static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin,
	320	int value)
	321	{
	322	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	323
b1268d37	324	__set_gpio_level_p3(group, pin, value);
c4a0208f KW	325	__set_gpio_dir_p3(group, pin, 0);
	326
	327	return 0;
	328	}
	329
	330	static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin,
	331	int value)
	332	{
b1268d37 RS	333	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	334
	335	__set_gpo_level_p3(group, pin, value);
c4a0208f KW	336	return 0;
	337	}
	338
	339	static void lpc32xx_gpio_set_value_p012(struct gpio_chip *chip, unsigned pin,
	340	int value)
	341	{
	342	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	343
	344	__set_gpio_level_p012(group, pin, value);
	345	}
	346
	347	static void lpc32xx_gpio_set_value_p3(struct gpio_chip *chip, unsigned pin,
	348	int value)
	349	{
	350	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	351
	352	__set_gpio_level_p3(group, pin, value);
	353	}
	354
	355	static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin,
	356	int value)
	357	{
	358	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	359
	360	__set_gpo_level_p3(group, pin, value);
	361	}
	362
46158aad RS	363	static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin)
	364	{
	365	struct lpc32xx_gpio_chip *group = to_lpc32xx_gpio(chip);
	366
	367	return __get_gpo_state_p3(group, pin);
	368	}
	369
c4a0208f KW	370	static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin)
	371	{
	372	if (pin < chip->ngpio)
	373	return 0;
	374
	375	return -EINVAL;
	376	}
	377
0bdfeddc RS	378	static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset)
	379	{
	380	return IRQ_LPC32XX_P0_P1_IRQ;
	381	}
	382
	383	static const char lpc32xx_gpio_to_irq_gpio_p3_table[] = {
	384	IRQ_LPC32XX_GPIO_00,
	385	IRQ_LPC32XX_GPIO_01,
	386	IRQ_LPC32XX_GPIO_02,
	387	IRQ_LPC32XX_GPIO_03,
	388	IRQ_LPC32XX_GPIO_04,
	389	IRQ_LPC32XX_GPIO_05,
	390	};
	391
	392	static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset)
	393	{
	394	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpio_p3_table))
	395	return lpc32xx_gpio_to_irq_gpio_p3_table[offset];
	396	return -ENXIO;
	397	}
	398
	399	static const char lpc32xx_gpio_to_irq_gpi_p3_table[] = {
	400	IRQ_LPC32XX_GPI_00,
	401	IRQ_LPC32XX_GPI_01,
	402	IRQ_LPC32XX_GPI_02,
	403	IRQ_LPC32XX_GPI_03,
	404	IRQ_LPC32XX_GPI_04,
	405	IRQ_LPC32XX_GPI_05,
	406	IRQ_LPC32XX_GPI_06,
	407	IRQ_LPC32XX_GPI_07,
	408	IRQ_LPC32XX_GPI_08,
	409	IRQ_LPC32XX_GPI_09,
	410	-ENXIO, /* 10 */
	411	-ENXIO, /* 11 */
	412	-ENXIO, /* 12 */
	413	-ENXIO, /* 13 */
	414	-ENXIO, /* 14 */
	415	-ENXIO, /* 15 */
	416	-ENXIO, /* 16 */
	417	-ENXIO, /* 17 */
	418	-ENXIO, /* 18 */
	419	IRQ_LPC32XX_GPI_19,
	420	-ENXIO, /* 20 */
	421	-ENXIO, /* 21 */
	422	-ENXIO, /* 22 */
	423	-ENXIO, /* 23 */
	424	-ENXIO, /* 24 */
	425	-ENXIO, /* 25 */
	426	-ENXIO, /* 26 */
	427	-ENXIO, /* 27 */
	428	IRQ_LPC32XX_GPI_28,
	429	};
	430
	431	static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset)
	432	{
	433	if (offset < ARRAY_SIZE(lpc32xx_gpio_to_irq_gpi_p3_table))
	434	return lpc32xx_gpio_to_irq_gpi_p3_table[offset];
	435	return -ENXIO;
	436	}
	437
c4a0208f KW	438	static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = {
	439	{
	440	.chip = {
	441	.label = "gpio_p0",
	442	.direction_input = lpc32xx_gpio_dir_input_p012,
	443	.get = lpc32xx_gpio_get_value_p012,
	444	.direction_output = lpc32xx_gpio_dir_output_p012,
	445	.set = lpc32xx_gpio_set_value_p012,
	446	.request = lpc32xx_gpio_request,
0bdfeddc	447	.to_irq = lpc32xx_gpio_to_irq_p01,
c4a0208f KW	448	.base = LPC32XX_GPIO_P0_GRP,
	449	.ngpio = LPC32XX_GPIO_P0_MAX,
	450	.names = gpio_p0_names,
9fb1f39e	451	.can_sleep = false,
c4a0208f KW	452	},
	453	.gpio_grp = &gpio_grp_regs_p0,
	454	},
	455	{
	456	.chip = {
	457	.label = "gpio_p1",
	458	.direction_input = lpc32xx_gpio_dir_input_p012,
	459	.get = lpc32xx_gpio_get_value_p012,
	460	.direction_output = lpc32xx_gpio_dir_output_p012,
	461	.set = lpc32xx_gpio_set_value_p012,
	462	.request = lpc32xx_gpio_request,
0bdfeddc	463	.to_irq = lpc32xx_gpio_to_irq_p01,
c4a0208f KW	464	.base = LPC32XX_GPIO_P1_GRP,
	465	.ngpio = LPC32XX_GPIO_P1_MAX,
	466	.names = gpio_p1_names,
9fb1f39e	467	.can_sleep = false,
c4a0208f KW	468	},
	469	.gpio_grp = &gpio_grp_regs_p1,
	470	},
	471	{
	472	.chip = {
	473	.label = "gpio_p2",
	474	.direction_input = lpc32xx_gpio_dir_input_p012,
	475	.get = lpc32xx_gpio_get_value_p012,
	476	.direction_output = lpc32xx_gpio_dir_output_p012,
	477	.set = lpc32xx_gpio_set_value_p012,
	478	.request = lpc32xx_gpio_request,
	479	.base = LPC32XX_GPIO_P2_GRP,
	480	.ngpio = LPC32XX_GPIO_P2_MAX,
	481	.names = gpio_p2_names,
9fb1f39e	482	.can_sleep = false,
c4a0208f KW	483	},
	484	.gpio_grp = &gpio_grp_regs_p2,
	485	},
	486	{
	487	.chip = {
	488	.label = "gpio_p3",
	489	.direction_input = lpc32xx_gpio_dir_input_p3,
	490	.get = lpc32xx_gpio_get_value_p3,
	491	.direction_output = lpc32xx_gpio_dir_output_p3,
	492	.set = lpc32xx_gpio_set_value_p3,
	493	.request = lpc32xx_gpio_request,
0bdfeddc	494	.to_irq = lpc32xx_gpio_to_irq_gpio_p3,
c4a0208f KW	495	.base = LPC32XX_GPIO_P3_GRP,
	496	.ngpio = LPC32XX_GPIO_P3_MAX,
	497	.names = gpio_p3_names,
9fb1f39e	498	.can_sleep = false,
c4a0208f KW	499	},
	500	.gpio_grp = &gpio_grp_regs_p3,
	501	},
	502	{
	503	.chip = {
	504	.label = "gpi_p3",
	505	.direction_input = lpc32xx_gpio_dir_in_always,
	506	.get = lpc32xx_gpi_get_value,
	507	.request = lpc32xx_gpio_request,
0bdfeddc	508	.to_irq = lpc32xx_gpio_to_irq_gpi_p3,
c4a0208f KW	509	.base = LPC32XX_GPI_P3_GRP,
	510	.ngpio = LPC32XX_GPI_P3_MAX,
	511	.names = gpi_p3_names,
9fb1f39e	512	.can_sleep = false,
c4a0208f KW	513	},
	514	.gpio_grp = &gpio_grp_regs_p3,
	515	},
	516	{
	517	.chip = {
	518	.label = "gpo_p3",
	519	.direction_output = lpc32xx_gpio_dir_out_always,
	520	.set = lpc32xx_gpo_set_value,
46158aad	521	.get = lpc32xx_gpo_get_value,
c4a0208f KW	522	.request = lpc32xx_gpio_request,
	523	.base = LPC32XX_GPO_P3_GRP,
	524	.ngpio = LPC32XX_GPO_P3_MAX,
	525	.names = gpo_p3_names,
9fb1f39e	526	.can_sleep = false,
c4a0208f KW	527	},
	528	.gpio_grp = &gpio_grp_regs_p3,
	529	},
	530	};
	531
e92935e1 RS	532	static int lpc32xx_of_xlate(struct gpio_chip *gc,
	533	const struct of_phandle_args gpiospec, u32 flags)
	534	{
	535	/* Is this the correct bank? */
	536	u32 bank = gpiospec->args[0];
fdc7a9f8	537	if ((bank >= ARRAY_SIZE(lpc32xx_gpiochip) \|\|
e92935e1 RS	538	(gc != &lpc32xx_gpiochip[bank].chip)))
	539	return -EINVAL;
	540
	541	if (flags)
	542	*flags = gpiospec->args[2];
	543	return gpiospec->args[1];
	544	}
	545
3836309d	546	static int lpc32xx_gpio_probe(struct platform_device *pdev)
c4a0208f KW	547	{
	548	int i;
	549
e92935e1 RS	550	for (i = 0; i < ARRAY_SIZE(lpc32xx_gpiochip); i++) {
	551	if (pdev->dev.of_node) {
	552	lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate;
	553	lpc32xx_gpiochip[i].chip.of_gpio_n_cells = 3;
	554	lpc32xx_gpiochip[i].chip.of_node = pdev->dev.of_node;
	555	}
c4a0208f	556	gpiochip_add(&lpc32xx_gpiochip[i].chip);
e92935e1 RS	557	}
	558
	559	return 0;
c4a0208f	560	}
e92935e1 RS	561
e92935e1 RS	562	#ifdef CONFIG_OF
e95c7c45	563	static const struct of_device_id lpc32xx_gpio_of_match[] = {
e92935e1 RS	564	{ .compatible = "nxp,lpc3220-gpio", },
	565	{ },
	566	};
	567	#endif
	568
	569	static struct platform_driver lpc32xx_gpio_driver = {
	570	.driver = {
	571	.name = "lpc32xx-gpio",
e92935e1 RS	572	.of_match_table = of_match_ptr(lpc32xx_gpio_of_match),
	573	},
	574	.probe = lpc32xx_gpio_probe,
	575	};
	576
	577	module_platform_driver(lpc32xx_gpio_driver);