[deliverable/linux.git] / drivers / gpio / gpio-mxs.c

/*
 * MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de
 *
 * Based on code from Freescale,
 * Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/basic_mmio_gpio.h>
#include <linux/module.h>

#define MXS_SET		0x4
#define MXS_CLR		0x8

#define PINCTRL_DOUT(p)		((is_imx23_gpio(p) ? 0x0500 : 0x0700) + (p->id) * 0x10)
#define PINCTRL_DIN(p)		((is_imx23_gpio(p) ? 0x0600 : 0x0900) + (p->id) * 0x10)
#define PINCTRL_DOE(p)		((is_imx23_gpio(p) ? 0x0700 : 0x0b00) + (p->id) * 0x10)
#define PINCTRL_PIN2IRQ(p)	((is_imx23_gpio(p) ? 0x0800 : 0x1000) + (p->id) * 0x10)
#define PINCTRL_IRQEN(p)	((is_imx23_gpio(p) ? 0x0900 : 0x1100) + (p->id) * 0x10)
#define PINCTRL_IRQLEV(p)	((is_imx23_gpio(p) ? 0x0a00 : 0x1200) + (p->id) * 0x10)
#define PINCTRL_IRQPOL(p)	((is_imx23_gpio(p) ? 0x0b00 : 0x1300) + (p->id) * 0x10)
#define PINCTRL_IRQSTAT(p)	((is_imx23_gpio(p) ? 0x0c00 : 0x1400) + (p->id) * 0x10)

#define GPIO_INT_FALL_EDGE	0x0
#define GPIO_INT_LOW_LEV	0x1
#define GPIO_INT_RISE_EDGE	0x2
#define GPIO_INT_HIGH_LEV	0x3
#define GPIO_INT_LEV_MASK	(1 << 0)
#define GPIO_INT_POL_MASK	(1 << 1)

#define irq_to_gpio(irq)	((irq) - MXS_GPIO_IRQ_START)

enum mxs_gpio_id {
	IMX23_GPIO,
	IMX28_GPIO,
};

struct mxs_gpio_port {
	void __iomem *base;
	int id;
	int irq;
	int virtual_irq_start;
	struct bgpio_chip bgc;
	enum mxs_gpio_id devid;
};

static inline int is_imx23_gpio(struct mxs_gpio_port *port)
{
	return port->devid == IMX23_GPIO;
}

static inline int is_imx28_gpio(struct mxs_gpio_port *port)
{
	return port->devid == IMX28_GPIO;
}

/* Note: This driver assumes 32 GPIOs are handled in one register */

static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
{
	u32 gpio = irq_to_gpio(d->irq);
	u32 pin_mask = 1 << (gpio & 31);
	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
	struct mxs_gpio_port *port = gc->private;
	void __iomem *pin_addr;
	int edge;

	switch (type) {
	case IRQ_TYPE_EDGE_RISING:
		edge = GPIO_INT_RISE_EDGE;
		break;
	case IRQ_TYPE_EDGE_FALLING:
		edge = GPIO_INT_FALL_EDGE;
		break;
	case IRQ_TYPE_LEVEL_LOW:
		edge = GPIO_INT_LOW_LEV;
		break;
	case IRQ_TYPE_LEVEL_HIGH:
		edge = GPIO_INT_HIGH_LEV;
		break;
	default:
		return -EINVAL;
	}

	/* set level or edge */
	pin_addr = port->base + PINCTRL_IRQLEV(port);
	if (edge & GPIO_INT_LEV_MASK)
		writel(pin_mask, pin_addr + MXS_SET);
	else
		writel(pin_mask, pin_addr + MXS_CLR);

	/* set polarity */
	pin_addr = port->base + PINCTRL_IRQPOL(port);
	if (edge & GPIO_INT_POL_MASK)
		writel(pin_mask, pin_addr + MXS_SET);
	else
		writel(pin_mask, pin_addr + MXS_CLR);

	writel(1 << (gpio & 0x1f),
	       port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);

	return 0;
}

/* MXS has one interrupt *per* gpio port */
static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
{
	u32 irq_stat;
	struct mxs_gpio_port *port = irq_get_handler_data(irq);
	u32 gpio_irq_no_base = port->virtual_irq_start;

	desc->irq_data.chip->irq_ack(&desc->irq_data);

	irq_stat = readl(port->base + PINCTRL_IRQSTAT(port)) &
			readl(port->base + PINCTRL_IRQEN(port));

	while (irq_stat != 0) {
		int irqoffset = fls(irq_stat) - 1;
		generic_handle_irq(gpio_irq_no_base + irqoffset);
		irq_stat &= ~(1 << irqoffset);
	}
}

/*
 * Set interrupt number "irq" in the GPIO as a wake-up source.
 * While system is running, all registered GPIO interrupts need to have
 * wake-up enabled. When system is suspended, only selected GPIO interrupts
 * need to have wake-up enabled.
 * @param  irq          interrupt source number
 * @param  enable       enable as wake-up if equal to non-zero
 * @return       This function returns 0 on success.
 */
static int mxs_gpio_set_wake_irq(struct irq_data *d, unsigned int enable)
{
	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
	struct mxs_gpio_port *port = gc->private;

	if (enable)
		enable_irq_wake(port->irq);
	else
		disable_irq_wake(port->irq);

	return 0;
}

static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port)
{
	struct irq_chip_generic *gc;
	struct irq_chip_type *ct;

	gc = irq_alloc_generic_chip("gpio-mxs", 1, port->virtual_irq_start,
				    port->base, handle_level_irq);
	gc->private = port;

	ct = gc->chip_types;
	ct->chip.irq_ack = irq_gc_ack_set_bit;
	ct->chip.irq_mask = irq_gc_mask_clr_bit;
	ct->chip.irq_unmask = irq_gc_mask_set_bit;
	ct->chip.irq_set_type = mxs_gpio_set_irq_type;
	ct->chip.irq_set_wake = mxs_gpio_set_wake_irq;
	ct->regs.ack = PINCTRL_IRQSTAT(port) + MXS_CLR;
	ct->regs.mask = PINCTRL_IRQEN(port);

	irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
}

static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
{
	struct bgpio_chip *bgc = to_bgpio_chip(gc);
	struct mxs_gpio_port *port =
		container_of(bgc, struct mxs_gpio_port, bgc);

	return port->virtual_irq_start + offset;
}

static struct platform_device_id mxs_gpio_ids[] = {
	{
		.name = "imx23-gpio",
		.driver_data = IMX23_GPIO,
	}, {
		.name = "imx28-gpio",
		.driver_data = IMX28_GPIO,
	}, {
		/* sentinel */
	}
};
MODULE_DEVICE_TABLE(platform, mxs_gpio_ids);

static int __devinit mxs_gpio_probe(struct platform_device *pdev)
{
	static void __iomem *base;
	struct mxs_gpio_port *port;
	struct resource *iores = NULL;
	int err;

	port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
	if (!port)
		return -ENOMEM;

	port->id = pdev->id;
	port->devid = pdev->id_entry->driver_data;
	port->virtual_irq_start = MXS_GPIO_IRQ_START + port->id * 32;

	port->irq = platform_get_irq(pdev, 0);
	if (port->irq < 0)
		return port->irq;

	/*
	 * map memory region only once, as all the gpio ports
	 * share the same one
	 */
	if (!base) {
		iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		base = devm_request_and_ioremap(&pdev->dev, iores);
		if (!base)
			return -EADDRNOTAVAIL;
	}
	port->base = base;

	/*
	 * select the pin interrupt functionality but initially
	 * disable the interrupts
	 */
	writel(~0U, port->base + PINCTRL_PIN2IRQ(port));
	writel(0, port->base + PINCTRL_IRQEN(port));

	/* clear address has to be used to clear IRQSTAT bits */
	writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);

	/* gpio-mxs can be a generic irq chip */
	mxs_gpio_init_gc(port);

	/* setup one handler for each entry */
	irq_set_chained_handler(port->irq, mxs_gpio_irq_handler);
	irq_set_handler_data(port->irq, port);

	err = bgpio_init(&port->bgc, &pdev->dev, 4,
			 port->base + PINCTRL_DIN(port),
			 port->base + PINCTRL_DOUT(port), NULL,
			 port->base + PINCTRL_DOE(port), NULL, false);
	if (err)
		return err;

	port->bgc.gc.to_irq = mxs_gpio_to_irq;
	port->bgc.gc.base = port->id * 32;

	err = gpiochip_add(&port->bgc.gc);
	if (err) {
		bgpio_remove(&port->bgc);
		return err;
	}

	return 0;
}

static struct platform_driver mxs_gpio_driver = {
	.driver		= {
		.name	= "gpio-mxs",
		.owner	= THIS_MODULE,
	},
	.probe		= mxs_gpio_probe,
	.id_table	= mxs_gpio_ids,
};

static int __init mxs_gpio_init(void)
{
	return platform_driver_register(&mxs_gpio_driver);
}
postcore_initcall(mxs_gpio_init);

MODULE_AUTHOR("Freescale Semiconductor, "
	      "Daniel Mack <danielncaiaq.de>, "
	      "Juergen Beisert <kernel@pengutronix.de>");
MODULE_DESCRIPTION("Freescale MXS GPIO");
MODULE_LICENSE("GPL");
Commit	Line	Data
fba311fc SG	1	/*
	2	* MXC GPIO support. (c) 2008 Daniel Mack <daniel@caiaq.de>
	3	* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
	4	*
	5	* Based on code from Freescale,
	6	* Copyright (C) 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version 2
	11	* of the License, or (at your option) any later version.
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
	20	* MA 02110-1301, USA.
	21	*/
	22
	23	#include <linux/init.h>
	24	#include <linux/interrupt.h>
	25	#include <linux/io.h>
	26	#include <linux/irq.h>
	27	#include <linux/gpio.h>
8d7cf837 SG	28	#include <linux/platform_device.h>
8d7cf837 SG	29	#include <linux/slab.h>
06f88a8a	30	#include <linux/basic_mmio_gpio.h>
bb207ef1	31	#include <linux/module.h>
fba311fc	32
8d7cf837 SG	33	#define MXS_SET 0x4
8d7cf837 SG	34	#define MXS_CLR 0x8
fba311fc	35
164387d2 SG	36	#define PINCTRL_DOUT(p) ((is_imx23_gpio(p) ? 0x0500 : 0x0700) + (p->id) * 0x10)
	37	#define PINCTRL_DIN(p) ((is_imx23_gpio(p) ? 0x0600 : 0x0900) + (p->id) * 0x10)
	38	#define PINCTRL_DOE(p) ((is_imx23_gpio(p) ? 0x0700 : 0x0b00) + (p->id) * 0x10)
	39	#define PINCTRL_PIN2IRQ(p) ((is_imx23_gpio(p) ? 0x0800 : 0x1000) + (p->id) * 0x10)
	40	#define PINCTRL_IRQEN(p) ((is_imx23_gpio(p) ? 0x0900 : 0x1100) + (p->id) * 0x10)
	41	#define PINCTRL_IRQLEV(p) ((is_imx23_gpio(p) ? 0x0a00 : 0x1200) + (p->id) * 0x10)
	42	#define PINCTRL_IRQPOL(p) ((is_imx23_gpio(p) ? 0x0b00 : 0x1300) + (p->id) * 0x10)
	43	#define PINCTRL_IRQSTAT(p) ((is_imx23_gpio(p) ? 0x0c00 : 0x1400) + (p->id) * 0x10)
fba311fc SG	44
	45	#define GPIO_INT_FALL_EDGE 0x0
	46	#define GPIO_INT_LOW_LEV 0x1
	47	#define GPIO_INT_RISE_EDGE 0x2
	48	#define GPIO_INT_HIGH_LEV 0x3
	49	#define GPIO_INT_LEV_MASK (1 << 0)
	50	#define GPIO_INT_POL_MASK (1 << 1)
	51
7e6c53aa SG	52	#define irq_to_gpio(irq) ((irq) - MXS_GPIO_IRQ_START)
7e6c53aa SG	53
164387d2 SG	54	enum mxs_gpio_id {
	55	IMX23_GPIO,
	56	IMX28_GPIO,
	57	};
	58
7b2fa570 GL	59	struct mxs_gpio_port {
	60	void __iomem *base;
	61	int id;
	62	int irq;
7b2fa570	63	int virtual_irq_start;
06f88a8a	64	struct bgpio_chip bgc;
164387d2	65	enum mxs_gpio_id devid;
7b2fa570 GL	66	};
7b2fa570 GL	67
164387d2 SG	68	static inline int is_imx23_gpio(struct mxs_gpio_port *port)
	69	{
	70	return port->devid == IMX23_GPIO;
	71	}
	72
	73	static inline int is_imx28_gpio(struct mxs_gpio_port *port)
	74	{
	75	return port->devid == IMX28_GPIO;
	76	}
	77
fba311fc SG	78	/* Note: This driver assumes 32 GPIOs are handled in one register */
fba311fc SG	79
bf0c1118	80	static int mxs_gpio_set_irq_type(struct irq_data *d, unsigned int type)
fba311fc	81	{
bf0c1118	82	u32 gpio = irq_to_gpio(d->irq);
fba311fc	83	u32 pin_mask = 1 << (gpio & 31);
498c17cf SG	84	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
498c17cf SG	85	struct mxs_gpio_port *port = gc->private;
fba311fc SG	86	void __iomem *pin_addr;
	87	int edge;
	88
	89	switch (type) {
	90	case IRQ_TYPE_EDGE_RISING:
	91	edge = GPIO_INT_RISE_EDGE;
	92	break;
	93	case IRQ_TYPE_EDGE_FALLING:
	94	edge = GPIO_INT_FALL_EDGE;
	95	break;
	96	case IRQ_TYPE_LEVEL_LOW:
	97	edge = GPIO_INT_LOW_LEV;
	98	break;
	99	case IRQ_TYPE_LEVEL_HIGH:
	100	edge = GPIO_INT_HIGH_LEV;
	101	break;
	102	default:
	103	return -EINVAL;
	104	}
	105
	106	/* set level or edge */
164387d2	107	pin_addr = port->base + PINCTRL_IRQLEV(port);
fba311fc	108	if (edge & GPIO_INT_LEV_MASK)
8d7cf837	109	writel(pin_mask, pin_addr + MXS_SET);
fba311fc	110	else
8d7cf837	111	writel(pin_mask, pin_addr + MXS_CLR);
fba311fc SG	112
fba311fc SG	113	/* set polarity */
164387d2	114	pin_addr = port->base + PINCTRL_IRQPOL(port);
fba311fc	115	if (edge & GPIO_INT_POL_MASK)
8d7cf837	116	writel(pin_mask, pin_addr + MXS_SET);
fba311fc	117	else
8d7cf837	118	writel(pin_mask, pin_addr + MXS_CLR);
fba311fc	119
498c17cf	120	writel(1 << (gpio & 0x1f),
164387d2	121	port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
fba311fc SG	122
	123	return 0;
	124	}
	125
	126	/* MXS has one interrupt per gpio port */
	127	static void mxs_gpio_irq_handler(u32 irq, struct irq_desc *desc)
	128	{
	129	u32 irq_stat;
8d7cf837	130	struct mxs_gpio_port *port = irq_get_handler_data(irq);
fba311fc SG	131	u32 gpio_irq_no_base = port->virtual_irq_start;
fba311fc SG	132
1f6b5dd4 UKK	133	desc->irq_data.chip->irq_ack(&desc->irq_data);
1f6b5dd4 UKK	134
164387d2 SG	135	irq_stat = readl(port->base + PINCTRL_IRQSTAT(port)) &
164387d2 SG	136	readl(port->base + PINCTRL_IRQEN(port));
fba311fc SG	137
	138	while (irq_stat != 0) {
	139	int irqoffset = fls(irq_stat) - 1;
	140	generic_handle_irq(gpio_irq_no_base + irqoffset);
	141	irq_stat &= ~(1 << irqoffset);
	142	}
	143	}
	144
	145	/*
	146	* Set interrupt number "irq" in the GPIO as a wake-up source.
	147	* While system is running, all registered GPIO interrupts need to have
	148	* wake-up enabled. When system is suspended, only selected GPIO interrupts
	149	* need to have wake-up enabled.
	150	* @param irq interrupt source number
	151	* @param enable enable as wake-up if equal to non-zero
	152	* @return This function returns 0 on success.
	153	*/
bf0c1118	154	static int mxs_gpio_set_wake_irq(struct irq_data *d, unsigned int enable)
fba311fc	155	{
498c17cf SG	156	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
498c17cf SG	157	struct mxs_gpio_port *port = gc->private;
fba311fc	158
6161715e SG	159	if (enable)
	160	enable_irq_wake(port->irq);
	161	else
	162	disable_irq_wake(port->irq);
fba311fc SG	163
	164	return 0;
	165	}
	166
498c17cf SG	167	static void __init mxs_gpio_init_gc(struct mxs_gpio_port *port)
	168	{
	169	struct irq_chip_generic *gc;
	170	struct irq_chip_type *ct;
	171
	172	gc = irq_alloc_generic_chip("gpio-mxs", 1, port->virtual_irq_start,
	173	port->base, handle_level_irq);
	174	gc->private = port;
	175
	176	ct = gc->chip_types;
591567a5	177	ct->chip.irq_ack = irq_gc_ack_set_bit;
498c17cf SG	178	ct->chip.irq_mask = irq_gc_mask_clr_bit;
	179	ct->chip.irq_unmask = irq_gc_mask_set_bit;
	180	ct->chip.irq_set_type = mxs_gpio_set_irq_type;
591567a5	181	ct->chip.irq_set_wake = mxs_gpio_set_wake_irq;
164387d2 SG	182	ct->regs.ack = PINCTRL_IRQSTAT(port) + MXS_CLR;
164387d2 SG	183	ct->regs.mask = PINCTRL_IRQEN(port);
498c17cf SG	184
	185	irq_setup_generic_chip(gc, IRQ_MSK(32), 0, IRQ_NOREQUEST, 0);
	186	}
fba311fc	187
06f88a8a	188	static int mxs_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
fba311fc	189	{
06f88a8a	190	struct bgpio_chip *bgc = to_bgpio_chip(gc);
fba311fc	191	struct mxs_gpio_port *port =
06f88a8a	192	container_of(bgc, struct mxs_gpio_port, bgc);
fba311fc SG	193
	194	return port->virtual_irq_start + offset;
	195	}
	196
164387d2 SG	197	static struct platform_device_id mxs_gpio_ids[] = {
	198	{
	199	.name = "imx23-gpio",
	200	.driver_data = IMX23_GPIO,
	201	}, {
	202	.name = "imx28-gpio",
	203	.driver_data = IMX28_GPIO,
	204	}, {
	205	/* sentinel */
	206	}
	207	};
	208	MODULE_DEVICE_TABLE(platform, mxs_gpio_ids);
	209
8d7cf837	210	static int __devinit mxs_gpio_probe(struct platform_device *pdev)
fba311fc	211	{
8d7cf837 SG	212	static void __iomem *base;
	213	struct mxs_gpio_port *port;
	214	struct resource *iores = NULL;
498c17cf	215	int err;
8d7cf837	216
940a4f7b	217	port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
8d7cf837 SG	218	if (!port)
	219	return -ENOMEM;
	220
	221	port->id = pdev->id;
164387d2	222	port->devid = pdev->id_entry->driver_data;
8d7cf837 SG	223	port->virtual_irq_start = MXS_GPIO_IRQ_START + port->id * 32;
8d7cf837 SG	224
940a4f7b SG	225	port->irq = platform_get_irq(pdev, 0);
	226	if (port->irq < 0)
	227	return port->irq;
	228
8d7cf837 SG	229	/*
	230	* map memory region only once, as all the gpio ports
	231	* share the same one
	232	*/
	233	if (!base) {
	234	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
940a4f7b SG	235	base = devm_request_and_ioremap(&pdev->dev, iores);
	236	if (!base)
	237	return -EADDRNOTAVAIL;
8d7cf837 SG	238	}
8d7cf837 SG	239	port->base = base;
fba311fc	240
498c17cf SG	241	/*
	242	* select the pin interrupt functionality but initially
	243	* disable the interrupts
	244	*/
164387d2 SG	245	writel(~0U, port->base + PINCTRL_PIN2IRQ(port));
164387d2 SG	246	writel(0, port->base + PINCTRL_IRQEN(port));
fba311fc	247
8d7cf837	248	/* clear address has to be used to clear IRQSTAT bits */
164387d2	249	writel(~0U, port->base + PINCTRL_IRQSTAT(port) + MXS_CLR);
fba311fc	250
498c17cf SG	251	/* gpio-mxs can be a generic irq chip */
498c17cf SG	252	mxs_gpio_init_gc(port);
fba311fc	253
8d7cf837 SG	254	/* setup one handler for each entry */
	255	irq_set_chained_handler(port->irq, mxs_gpio_irq_handler);
	256	irq_set_handler_data(port->irq, port);
fba311fc	257
06f88a8a	258	err = bgpio_init(&port->bgc, &pdev->dev, 4,
164387d2 SG	259	port->base + PINCTRL_DIN(port),
	260	port->base + PINCTRL_DOUT(port), NULL,
	261	port->base + PINCTRL_DOE(port), NULL, false);
8d7cf837	262	if (err)
940a4f7b	263	return err;
fba311fc	264
06f88a8a SG	265	port->bgc.gc.to_irq = mxs_gpio_to_irq;
	266	port->bgc.gc.base = port->id * 32;
	267
	268	err = gpiochip_add(&port->bgc.gc);
940a4f7b SG	269	if (err) {
	270	bgpio_remove(&port->bgc);
	271	return err;
	272	}
06f88a8a	273
8d7cf837	274	return 0;
ef19660b	275	}
8d7cf837 SG	276
	277	static struct platform_driver mxs_gpio_driver = {
	278	.driver = {
	279	.name = "gpio-mxs",
	280	.owner = THIS_MODULE,
	281	},
	282	.probe = mxs_gpio_probe,
164387d2	283	.id_table = mxs_gpio_ids,
fba311fc	284	};
ef19660b	285
8d7cf837	286	static int __init mxs_gpio_init(void)
ef19660b	287	{
8d7cf837	288	return platform_driver_register(&mxs_gpio_driver);
ef19660b	289	}
8d7cf837 SG	290	postcore_initcall(mxs_gpio_init);
	291
	292	MODULE_AUTHOR("Freescale Semiconductor, "
	293	"Daniel Mack <danielncaiaq.de>, "
	294	"Juergen Beisert <kernel@pengutronix.de>");
	295	MODULE_DESCRIPTION("Freescale MXS GPIO");
	296	MODULE_LICENSE("GPL");