Message-ID: <20110604223434.GB31236@ponder.secretlab.ca>
Date:	Sat, 4 Jun 2011 16:34:34 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Shawn Guo <shawn.guo@...aro.org>
Cc:	linux-kernel@...r.kernel.org, arnd@...db.de, kernel@...gutronix.de,
	linux-arm-kernel@...ts.infradead.org, patches@...aro.org
Subject: Re: [PATCH v3 3/3] ARM: mxs: use gpio-mxs driver by adding platform
 device

On Sat, Jun 04, 2011 at 06:55:40PM +0800, Shawn Guo wrote:
> It replaces mach-mxs/gpio with gpio-mxs driver by adding platform
> device for drivers/gpio/gpio-mxs, and then remove the mach-mxs/gpio
> driver.
> 
> Signed-off-by: Shawn Guo <shawn.guo@...aro.org>
> Acked-by: Arnd Bergmann <arnd@...db.de>

After changing to the way I asked for the gpio driver to be moved in
patch 1/3, you'll need to integrate the platform device registrations in this
patch with patch #2 so that the series remains bisectable.

g.

> ---
>  arch/arm/mach-mxs/Makefile                      |    2 +-
>  arch/arm/mach-mxs/devices.c                     |   11 +
>  arch/arm/mach-mxs/devices/Makefile              |    1 +
>  arch/arm/mach-mxs/devices/platform-gpio-mxs.c   |   53 ++++
>  arch/arm/mach-mxs/gpio.c                        |  331 -----------------------
>  arch/arm/mach-mxs/gpio.h                        |   34 ---
>  arch/arm/mach-mxs/include/mach/devices-common.h |    2 +
>  arch/arm/mach-mxs/mach-mx28evk.c                |    1 -
>  arch/arm/mach-mxs/mm-mx23.c                     |    1 -
>  arch/arm/mach-mxs/mm-mx28.c                     |    1 -
>  10 files changed, 68 insertions(+), 369 deletions(-)
>  create mode 100644 arch/arm/mach-mxs/devices/platform-gpio-mxs.c
>  delete mode 100644 arch/arm/mach-mxs/gpio.c
>  delete mode 100644 arch/arm/mach-mxs/gpio.h
> 
> diff --git a/arch/arm/mach-mxs/Makefile b/arch/arm/mach-mxs/Makefile
> index 58e8923..6c38262 100644
> --- a/arch/arm/mach-mxs/Makefile
> +++ b/arch/arm/mach-mxs/Makefile
> @@ -1,5 +1,5 @@
>  # Common support
> -obj-y := clock.o devices.o gpio.o icoll.o iomux.o system.o timer.o
> +obj-y := clock.o devices.o icoll.o iomux.o system.o timer.o
>  
>  obj-$(CONFIG_MXS_OCOTP) += ocotp.o
>  obj-$(CONFIG_PM) += pm.o
> diff --git a/arch/arm/mach-mxs/devices.c b/arch/arm/mach-mxs/devices.c
> index cfdb6b2..fe3e847 100644
> --- a/arch/arm/mach-mxs/devices.c
> +++ b/arch/arm/mach-mxs/devices.c
> @@ -88,3 +88,14 @@ int __init mxs_add_amba_device(const struct amba_device *dev)
>  
>  	return amba_device_register(adev, &iomem_resource);
>  }
> +
> +struct device mxs_apbh_bus = {
> +	.init_name	= "mxs_apbh",
> +	.parent         = &platform_bus,
> +};
> +
> +static int __init mxs_device_init(void)
> +{
> +	return device_register(&mxs_apbh_bus);
> +}
> +core_initcall(mxs_device_init);
> diff --git a/arch/arm/mach-mxs/devices/Makefile b/arch/arm/mach-mxs/devices/Makefile
> index 324f282..351915c 100644
> --- a/arch/arm/mach-mxs/devices/Makefile
> +++ b/arch/arm/mach-mxs/devices/Makefile
> @@ -6,4 +6,5 @@ obj-$(CONFIG_MXS_HAVE_PLATFORM_FLEXCAN) += platform-flexcan.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_I2C) += platform-mxs-i2c.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_MMC) += platform-mxs-mmc.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_MXS_PWM) += platform-mxs-pwm.o
> +obj-y += platform-gpio-mxs.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_MXSFB) += platform-mxsfb.o
> diff --git a/arch/arm/mach-mxs/devices/platform-gpio-mxs.c b/arch/arm/mach-mxs/devices/platform-gpio-mxs.c
> new file mode 100644
> index 0000000..ed0885e
> --- /dev/null
> +++ b/arch/arm/mach-mxs/devices/platform-gpio-mxs.c
> @@ -0,0 +1,53 @@
> +/*
> + * Copyright 2011 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 version 2 as published by the
> + * Free Software Foundation.
> + */
> +#include <linux/compiler.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +
> +#include <mach/mx23.h>
> +#include <mach/mx28.h>
> +#include <mach/devices-common.h>
> +
> +struct platform_device *__init mxs_add_gpio(
> +	int id, resource_size_t iobase, int irq)
> +{
> +	struct resource res[] = {
> +		{
> +			.start = iobase,
> +			.end = iobase + SZ_8K - 1,
> +			.flags = IORESOURCE_MEM,
> +		}, {
> +			.start = irq,
> +			.end = irq,
> +			.flags = IORESOURCE_IRQ,
> +		},
> +	};
> +
> +	return platform_device_register_resndata(&mxs_apbh_bus,
> +			"gpio-mxs", id, res, ARRAY_SIZE(res), NULL, 0);
> +}
> +
> +static int __init mxs_add_mxs_gpio(void)
> +{
> +	if (cpu_is_mx23()) {
> +		mxs_add_gpio(0, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO0);
> +		mxs_add_gpio(1, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO1);
> +		mxs_add_gpio(2, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO2);
> +	}
> +
> +	if (cpu_is_mx28()) {
> +		mxs_add_gpio(0, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO0);
> +		mxs_add_gpio(1, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO1);
> +		mxs_add_gpio(2, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO2);
> +		mxs_add_gpio(3, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO3);
> +		mxs_add_gpio(4, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO4);
> +	}
> +
> +	return 0;
> +}
> +postcore_initcall(mxs_add_mxs_gpio);
> diff --git a/arch/arm/mach-mxs/gpio.c b/arch/arm/mach-mxs/gpio.c
> deleted file mode 100644
> index 2c950fe..0000000
> --- a/arch/arm/mach-mxs/gpio.c
> +++ /dev/null
> @@ -1,331 +0,0 @@
> -/*
> - * MXC GPIO support. (c) 2008 Daniel Mack <daniel@...aq.de>
> - * Copyright 2008 Juergen Beisert, kernel@...gutronix.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 <mach/mx23.h>
> -#include <mach/mx28.h>
> -#include <asm-generic/bug.h>
> -
> -#include "gpio.h"
> -
> -static struct mxs_gpio_port *mxs_gpio_ports;
> -static int gpio_table_size;
> -
> -#define PINCTRL_DOUT(n)		((cpu_is_mx23() ? 0x0500 : 0x0700) + (n) * 0x10)
> -#define PINCTRL_DIN(n)		((cpu_is_mx23() ? 0x0600 : 0x0900) + (n) * 0x10)
> -#define PINCTRL_DOE(n)		((cpu_is_mx23() ? 0x0700 : 0x0b00) + (n) * 0x10)
> -#define PINCTRL_PIN2IRQ(n)	((cpu_is_mx23() ? 0x0800 : 0x1000) + (n) * 0x10)
> -#define PINCTRL_IRQEN(n)	((cpu_is_mx23() ? 0x0900 : 0x1100) + (n) * 0x10)
> -#define PINCTRL_IRQLEV(n)	((cpu_is_mx23() ? 0x0a00 : 0x1200) + (n) * 0x10)
> -#define PINCTRL_IRQPOL(n)	((cpu_is_mx23() ? 0x0b00 : 0x1300) + (n) * 0x10)
> -#define PINCTRL_IRQSTAT(n)	((cpu_is_mx23() ? 0x0c00 : 0x1400) + (n) * 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)
> -
> -/* Note: This driver assumes 32 GPIOs are handled in one register */
> -
> -static void clear_gpio_irqstatus(struct mxs_gpio_port *port, u32 index)
> -{
> -	__mxs_clrl(1 << index, port->base + PINCTRL_IRQSTAT(port->id));
> -}
> -
> -static void set_gpio_irqenable(struct mxs_gpio_port *port, u32 index,
> -				int enable)
> -{
> -	if (enable) {
> -		__mxs_setl(1 << index, port->base + PINCTRL_IRQEN(port->id));
> -		__mxs_setl(1 << index, port->base + PINCTRL_PIN2IRQ(port->id));
> -	} else {
> -		__mxs_clrl(1 << index, port->base + PINCTRL_IRQEN(port->id));
> -	}
> -}
> -
> -static void mxs_gpio_ack_irq(struct irq_data *d)
> -{
> -	u32 gpio = irq_to_gpio(d->irq);
> -	clear_gpio_irqstatus(&mxs_gpio_ports[gpio / 32], gpio & 0x1f);
> -}
> -
> -static void mxs_gpio_mask_irq(struct irq_data *d)
> -{
> -	u32 gpio = irq_to_gpio(d->irq);
> -	set_gpio_irqenable(&mxs_gpio_ports[gpio / 32], gpio & 0x1f, 0);
> -}
> -
> -static void mxs_gpio_unmask_irq(struct irq_data *d)
> -{
> -	u32 gpio = irq_to_gpio(d->irq);
> -	set_gpio_irqenable(&mxs_gpio_ports[gpio / 32], gpio & 0x1f, 1);
> -}
> -
> -static int mxs_gpio_get(struct gpio_chip *chip, unsigned offset);
> -
> -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 mxs_gpio_port *port = &mxs_gpio_ports[gpio / 32];
> -	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->id);
> -	if (edge & GPIO_INT_LEV_MASK)
> -		__mxs_setl(pin_mask, pin_addr);
> -	else
> -		__mxs_clrl(pin_mask, pin_addr);
> -
> -	/* set polarity */
> -	pin_addr = port->base + PINCTRL_IRQPOL(port->id);
> -	if (edge & GPIO_INT_POL_MASK)
> -		__mxs_setl(pin_mask, pin_addr);
> -	else
> -		__mxs_clrl(pin_mask, pin_addr);
> -
> -	clear_gpio_irqstatus(port, gpio & 0x1f);
> -
> -	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 = (struct mxs_gpio_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 = __raw_readl(port->base + PINCTRL_IRQSTAT(port->id)) &
> -			__raw_readl(port->base + PINCTRL_IRQEN(port->id));
> -
> -	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)
> -{
> -	u32 gpio = irq_to_gpio(d->irq);
> -	u32 gpio_idx = gpio & 0x1f;
> -	struct mxs_gpio_port *port = &mxs_gpio_ports[gpio / 32];
> -
> -	if (enable) {
> -		if (port->irq_high && (gpio_idx >= 16))
> -			enable_irq_wake(port->irq_high);
> -		else
> -			enable_irq_wake(port->irq);
> -	} else {
> -		if (port->irq_high && (gpio_idx >= 16))
> -			disable_irq_wake(port->irq_high);
> -		else
> -			disable_irq_wake(port->irq);
> -	}
> -
> -	return 0;
> -}
> -
> -static struct irq_chip gpio_irq_chip = {
> -	.name = "mxs gpio",
> -	.irq_ack = mxs_gpio_ack_irq,
> -	.irq_mask = mxs_gpio_mask_irq,
> -	.irq_unmask = mxs_gpio_unmask_irq,
> -	.irq_set_type = mxs_gpio_set_irq_type,
> -	.irq_set_wake = mxs_gpio_set_wake_irq,
> -};
> -
> -static void mxs_set_gpio_direction(struct gpio_chip *chip, unsigned offset,
> -				int dir)
> -{
> -	struct mxs_gpio_port *port =
> -		container_of(chip, struct mxs_gpio_port, chip);
> -	void __iomem *pin_addr = port->base + PINCTRL_DOE(port->id);
> -
> -	if (dir)
> -		__mxs_setl(1 << offset, pin_addr);
> -	else
> -		__mxs_clrl(1 << offset, pin_addr);
> -}
> -
> -static int mxs_gpio_get(struct gpio_chip *chip, unsigned offset)
> -{
> -	struct mxs_gpio_port *port =
> -		container_of(chip, struct mxs_gpio_port, chip);
> -
> -	return (__raw_readl(port->base + PINCTRL_DIN(port->id)) >> offset) & 1;
> -}
> -
> -static void mxs_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
> -{
> -	struct mxs_gpio_port *port =
> -		container_of(chip, struct mxs_gpio_port, chip);
> -	void __iomem *pin_addr = port->base + PINCTRL_DOUT(port->id);
> -
> -	if (value)
> -		__mxs_setl(1 << offset, pin_addr);
> -	else
> -		__mxs_clrl(1 << offset, pin_addr);
> -}
> -
> -static int mxs_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
> -{
> -	struct mxs_gpio_port *port =
> -		container_of(chip, struct mxs_gpio_port, chip);
> -
> -	return port->virtual_irq_start + offset;
> -}
> -
> -static int mxs_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
> -{
> -	mxs_set_gpio_direction(chip, offset, 0);
> -	return 0;
> -}
> -
> -static int mxs_gpio_direction_output(struct gpio_chip *chip,
> -				     unsigned offset, int value)
> -{
> -	mxs_gpio_set(chip, offset, value);
> -	mxs_set_gpio_direction(chip, offset, 1);
> -	return 0;
> -}
> -
> -int __init mxs_gpio_init(struct mxs_gpio_port *port, int cnt)
> -{
> -	int i, j;
> -
> -	/* save for local usage */
> -	mxs_gpio_ports = port;
> -	gpio_table_size = cnt;
> -
> -	pr_info("MXS GPIO hardware\n");
> -
> -	for (i = 0; i < cnt; i++) {
> -		/* disable the interrupt and clear the status */
> -		__raw_writel(0, port[i].base + PINCTRL_PIN2IRQ(i));
> -		__raw_writel(0, port[i].base + PINCTRL_IRQEN(i));
> -
> -		/* clear address has to be used to clear IRQSTAT bits */
> -		__mxs_clrl(~0U, port[i].base + PINCTRL_IRQSTAT(i));
> -
> -		for (j = port[i].virtual_irq_start;
> -			j < port[i].virtual_irq_start + 32; j++) {
> -			irq_set_chip_and_handler(j, &gpio_irq_chip,
> -						 handle_level_irq);
> -			set_irq_flags(j, IRQF_VALID);
> -		}
> -
> -		/* setup one handler for each entry */
> -		irq_set_chained_handler(port[i].irq, mxs_gpio_irq_handler);
> -		irq_set_handler_data(port[i].irq, &port[i]);
> -
> -		/* register gpio chip */
> -		port[i].chip.direction_input = mxs_gpio_direction_input;
> -		port[i].chip.direction_output = mxs_gpio_direction_output;
> -		port[i].chip.get = mxs_gpio_get;
> -		port[i].chip.set = mxs_gpio_set;
> -		port[i].chip.to_irq = mxs_gpio_to_irq;
> -		port[i].chip.base = i * 32;
> -		port[i].chip.ngpio = 32;
> -
> -		/* its a serious configuration bug when it fails */
> -		BUG_ON(gpiochip_add(&port[i].chip) < 0);
> -	}
> -
> -	return 0;
> -}
> -
> -#define MX23_GPIO_BASE	MX23_IO_ADDRESS(MX23_PINCTRL_BASE_ADDR)
> -#define MX28_GPIO_BASE	MX28_IO_ADDRESS(MX28_PINCTRL_BASE_ADDR)
> -
> -#define DEFINE_MXS_GPIO_PORT(_base, _irq, _id)				\
> -	{								\
> -		.chip.label = "gpio-" #_id,				\
> -		.id = _id,						\
> -		.irq = _irq,						\
> -		.base = _base,						\
> -		.virtual_irq_start = MXS_GPIO_IRQ_START + (_id) * 32,	\
> -	}
> -
> -#ifdef CONFIG_SOC_IMX23
> -static struct mxs_gpio_port mx23_gpio_ports[] = {
> -	DEFINE_MXS_GPIO_PORT(MX23_GPIO_BASE, MX23_INT_GPIO0, 0),
> -	DEFINE_MXS_GPIO_PORT(MX23_GPIO_BASE, MX23_INT_GPIO1, 1),
> -	DEFINE_MXS_GPIO_PORT(MX23_GPIO_BASE, MX23_INT_GPIO2, 2),
> -};
> -
> -int __init mx23_register_gpios(void)
> -{
> -	return mxs_gpio_init(mx23_gpio_ports, ARRAY_SIZE(mx23_gpio_ports));
> -}
> -#endif
> -
> -#ifdef CONFIG_SOC_IMX28
> -static struct mxs_gpio_port mx28_gpio_ports[] = {
> -	DEFINE_MXS_GPIO_PORT(MX28_GPIO_BASE, MX28_INT_GPIO0, 0),
> -	DEFINE_MXS_GPIO_PORT(MX28_GPIO_BASE, MX28_INT_GPIO1, 1),
> -	DEFINE_MXS_GPIO_PORT(MX28_GPIO_BASE, MX28_INT_GPIO2, 2),
> -	DEFINE_MXS_GPIO_PORT(MX28_GPIO_BASE, MX28_INT_GPIO3, 3),
> -	DEFINE_MXS_GPIO_PORT(MX28_GPIO_BASE, MX28_INT_GPIO4, 4),
> -};
> -
> -int __init mx28_register_gpios(void)
> -{
> -	return mxs_gpio_init(mx28_gpio_ports, ARRAY_SIZE(mx28_gpio_ports));
> -}
> -#endif
> diff --git a/arch/arm/mach-mxs/gpio.h b/arch/arm/mach-mxs/gpio.h
> deleted file mode 100644
> index 005bb06..0000000
> --- a/arch/arm/mach-mxs/gpio.h
> +++ /dev/null
> @@ -1,34 +0,0 @@
> -/*
> - * Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
> - * Copyright 2008 Juergen Beisert, kernel@...gutronix.de
> - *
> - * 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.
> - */
> -
> -#ifndef __MXS_GPIO_H__
> -#define __MXS_GPIO_H__
> -
> -struct mxs_gpio_port {
> -	void __iomem *base;
> -	int id;
> -	int irq;
> -	int irq_high;
> -	int virtual_irq_start;
> -	struct gpio_chip chip;
> -};
> -
> -int mxs_gpio_init(struct mxs_gpio_port*, int);
> -
> -#endif /* __MXS_GPIO_H__ */
> diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h
> index 7a37469..812d7a8 100644
> --- a/arch/arm/mach-mxs/include/mach/devices-common.h
> +++ b/arch/arm/mach-mxs/include/mach/devices-common.h
> @@ -11,6 +11,8 @@
>  #include <linux/init.h>
>  #include <linux/amba/bus.h>
>  
> +extern struct device mxs_apbh_bus;
> +
>  struct platform_device *mxs_add_platform_device_dmamask(
>  		const char *name, int id,
>  		const struct resource *res, unsigned int num_resources,
> diff --git a/arch/arm/mach-mxs/mach-mx28evk.c b/arch/arm/mach-mxs/mach-mx28evk.c
> index eacdc6b..56767a5 100644
> --- a/arch/arm/mach-mxs/mach-mx28evk.c
> +++ b/arch/arm/mach-mxs/mach-mx28evk.c
> @@ -26,7 +26,6 @@
>  #include <mach/iomux-mx28.h>
>  
>  #include "devices-mx28.h"
> -#include "gpio.h"
>  
>  #define MX28EVK_FLEXCAN_SWITCH	MXS_GPIO_NR(2, 13)
>  #define MX28EVK_FEC_PHY_POWER	MXS_GPIO_NR(2, 15)
> diff --git a/arch/arm/mach-mxs/mm-mx23.c b/arch/arm/mach-mxs/mm-mx23.c
> index 5148cd6..1b2345a 100644
> --- a/arch/arm/mach-mxs/mm-mx23.c
> +++ b/arch/arm/mach-mxs/mm-mx23.c
> @@ -41,5 +41,4 @@ void __init mx23_map_io(void)
>  void __init mx23_init_irq(void)
>  {
>  	icoll_init_irq();
> -	mx23_register_gpios();
>  }
> diff --git a/arch/arm/mach-mxs/mm-mx28.c b/arch/arm/mach-mxs/mm-mx28.c
> index 7e4cea3..b6e18dd 100644
> --- a/arch/arm/mach-mxs/mm-mx28.c
> +++ b/arch/arm/mach-mxs/mm-mx28.c
> @@ -41,5 +41,4 @@ void __init mx28_map_io(void)
>  void __init mx28_init_irq(void)
>  {
>  	icoll_init_irq();
> -	mx28_register_gpios();
>  }
> -- 
> 1.7.4.1
> 
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