1 files changed, 0 insertions, 591 deletions

diff --git a/target/linux/brcm2708/patches-3.18/0002-Add-bcm2708_gpio-driver.patch b/target/linux/brcm2708/patches-3.18/0002-Add-bcm2708_gpio-driver.patch
deleted file mode 100644
index cc29843..0000000
--- a/target/linux/brcm2708/patches-3.18/0002-Add-bcm2708_gpio-driver.patch
+++ /dev/null
@@ -1,591 +0,0 @@
-From 4f339b429583965a8eb7c23474414d0730db1215 Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Wed, 8 Oct 2014 18:50:05 +0100
-Subject: [PATCH 002/114] Add bcm2708_gpio driver
-
-Signed-off-by: popcornmix <popcornmix@gmail.com>
-
-bcm2708: Add extension to configure internal pulls
-
-The bcm2708 gpio controller supports internal pulls to be used as pull-up,
-pull-down or being entirely disabled. As it can be useful for a driver to
-change the pull configuration from it's default pull-down state, add an
-extension which allows configuring the pull per gpio.
-
-Signed-off-by: Julian Scheel <julian@jusst.de>
-
-bcm2708-gpio: Revert the use of pinctrl_request_gpio
-
-In non-DT systems, pinctrl_request_gpio always fails causing
-"requests probe deferral" messages. In DT systems, it isn't useful
-because the reference counting is independent of the normal pinctrl
-pin reservations.
-
-gpio: Only clear the currently occurring interrupt. Avoids losing interrupts
-
-See: linux #760
-
-bcm2708_gpio: Avoid calling irq_unmask for all interrupts
-
-When setting up the interrupts, specify that the handle_simple_irq
-handler should be used. This leaves interrupt acknowledgement to
-the caller, and prevents irq_unmask from being called for all
-interrupts.
-
-Issue: linux #760
----
- arch/arm/mach-bcm2708/Kconfig             |   8 +
- arch/arm/mach-bcm2708/Makefile            |   1 +
- arch/arm/mach-bcm2708/bcm2708.c           |  28 ++
- arch/arm/mach-bcm2708/bcm2708_gpio.c      | 426 ++++++++++++++++++++++++++++++
- arch/arm/mach-bcm2708/include/mach/gpio.h |  17 ++
- include/linux/platform_data/bcm2708.h     |  23 ++
- 6 files changed, 503 insertions(+)
- create mode 100644 arch/arm/mach-bcm2708/bcm2708_gpio.c
- create mode 100644 arch/arm/mach-bcm2708/include/mach/gpio.h
- create mode 100644 include/linux/platform_data/bcm2708.h
-
---- a/arch/arm/mach-bcm2708/Kconfig
-+++ b/arch/arm/mach-bcm2708/Kconfig
-@@ -9,6 +9,14 @@ config MACH_BCM2708
- 	help
- 	  Include support for the Broadcom(R) BCM2708 platform.
- 
-+config BCM2708_GPIO
-+	bool "BCM2708 gpio support"
-+	depends on MACH_BCM2708
-+	select ARCH_REQUIRE_GPIOLIB
-+        default y
-+	help
-+	  Include support for the Broadcom(R) BCM2708 gpio.
-+
- config BCM2708_VCMEM
- 	bool "Videocore Memory"
- 	depends on MACH_BCM2708
---- a/arch/arm/mach-bcm2708/Makefile
-+++ b/arch/arm/mach-bcm2708/Makefile
-@@ -3,4 +3,5 @@
- #
- 
- obj-$(CONFIG_MACH_BCM2708) 	+= clock.o bcm2708.o armctrl.o vcio.o power.o dma.o
-+obj-$(CONFIG_BCM2708_GPIO)	+= bcm2708_gpio.o
- obj-$(CONFIG_BCM2708_VCMEM)	+= vc_mem.o
---- a/arch/arm/mach-bcm2708/bcm2708.c
-+++ b/arch/arm/mach-bcm2708/bcm2708.c
-@@ -331,6 +331,31 @@ static struct platform_device bcm2708_vc
- 		},
- };
- 
-+#ifdef CONFIG_BCM2708_GPIO
-+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
-+
-+static struct resource bcm2708_gpio_resources[] = {
-+	[0] = {			/* general purpose I/O */
-+	       .start = GPIO_BASE,
-+	       .end = GPIO_BASE + SZ_4K - 1,
-+	       .flags = IORESOURCE_MEM,
-+	       },
-+};
-+
-+static u64 gpio_dmamask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON);
-+
-+static struct platform_device bcm2708_gpio_device = {
-+	.name = BCM_GPIO_DRIVER_NAME,
-+	.id = -1,		/* only one VideoCore I/O area */
-+	.resource = bcm2708_gpio_resources,
-+	.num_resources = ARRAY_SIZE(bcm2708_gpio_resources),
-+	.dev = {
-+		.dma_mask = &gpio_dmamask,
-+		.coherent_dma_mask = DMA_BIT_MASK(DMA_MASK_BITS_COMMON),
-+		},
-+};
-+#endif
-+
- static struct resource bcm2708_systemtimer_resources[] = {
- 	[0] = {			/* system timer access */
- 	       .start = ST_BASE,
-@@ -473,6 +498,9 @@ void __init bcm2708_init(void)
- 
- 	bcm_register_device(&bcm2708_dmaman_device);
- 	bcm_register_device(&bcm2708_vcio_device);
-+#ifdef CONFIG_BCM2708_GPIO
-+	bcm_register_device(&bcm2708_gpio_device);
-+#endif
- 	bcm_register_device(&bcm2708_systemtimer_device);
- 	bcm_register_device(&bcm2708_fb_device);
- 	bcm_register_device(&bcm2708_usb_device);
---- /dev/null
-+++ b/arch/arm/mach-bcm2708/bcm2708_gpio.c
-@@ -0,0 +1,426 @@
-+/*
-+ *  linux/arch/arm/mach-bcm2708/bcm2708_gpio.c
-+ *
-+ *  Copyright (C) 2010 Broadcom
-+ *
-+ * 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/spinlock.h>
-+#include <linux/module.h>
-+#include <linux/delay.h>
-+#include <linux/list.h>
-+#include <linux/io.h>
-+#include <linux/irq.h>
-+#include <linux/interrupt.h>
-+#include <linux/slab.h>
-+#include <mach/gpio.h>
-+#include <linux/gpio.h>
-+#include <linux/platform_device.h>
-+#include <mach/platform.h>
-+#include <linux/pinctrl/consumer.h>
-+
-+#include <linux/platform_data/bcm2708.h>
-+
-+#define BCM_GPIO_DRIVER_NAME "bcm2708_gpio"
-+#define DRIVER_NAME BCM_GPIO_DRIVER_NAME
-+#define BCM_GPIO_USE_IRQ 1
-+
-+#define GPIOFSEL(x)  (0x00+(x)*4)
-+#define GPIOSET(x)   (0x1c+(x)*4)
-+#define GPIOCLR(x)   (0x28+(x)*4)
-+#define GPIOLEV(x)   (0x34+(x)*4)
-+#define GPIOEDS(x)   (0x40+(x)*4)
-+#define GPIOREN(x)   (0x4c+(x)*4)
-+#define GPIOFEN(x)   (0x58+(x)*4)
-+#define GPIOHEN(x)   (0x64+(x)*4)
-+#define GPIOLEN(x)   (0x70+(x)*4)
-+#define GPIOAREN(x)  (0x7c+(x)*4)
-+#define GPIOAFEN(x)  (0x88+(x)*4)
-+#define GPIOUD(x)    (0x94+(x)*4)
-+#define GPIOUDCLK(x) (0x98+(x)*4)
-+
-+#define GPIO_BANKS 2
-+
-+enum { GPIO_FSEL_INPUT, GPIO_FSEL_OUTPUT,
-+	GPIO_FSEL_ALT5, GPIO_FSEL_ALT_4,
-+	GPIO_FSEL_ALT0, GPIO_FSEL_ALT1,
-+	GPIO_FSEL_ALT2, GPIO_FSEL_ALT3,
-+};
-+
-+	/* Each of the two spinlocks protects a different set of hardware
-+	 * regiters and data structurs. This decouples the code of the IRQ from
-+	 * the GPIO code. This also makes the case of a GPIO routine call from
-+	 * the IRQ code simpler.
-+	 */
-+static DEFINE_SPINLOCK(lock);	/* GPIO registers */
-+
-+struct bcm2708_gpio {
-+	struct list_head list;
-+	void __iomem *base;
-+	struct gpio_chip gc;
-+	unsigned long rising[(BCM2708_NR_GPIOS + 31) / 32];
-+	unsigned long falling[(BCM2708_NR_GPIOS + 31) / 32];
-+	unsigned long high[(BCM2708_NR_GPIOS + 31) / 32];
-+	unsigned long low[(BCM2708_NR_GPIOS + 31) / 32];
-+};
-+
-+static int bcm2708_set_function(struct gpio_chip *gc, unsigned offset,
-+				int function)
-+{
-+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
-+	unsigned long flags;
-+	unsigned gpiodir;
-+	unsigned gpio_bank = offset / 10;
-+	unsigned gpio_field_offset = (offset - 10 * gpio_bank) * 3;
-+
-+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set_function %p (%d,%d)\n", gc, offset, function);
-+	if (offset >= BCM2708_NR_GPIOS)
-+		return -EINVAL;
-+
-+	spin_lock_irqsave(&lock, flags);
-+
-+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
-+	gpiodir &= ~(7 << gpio_field_offset);
-+	gpiodir |= function << gpio_field_offset;
-+	writel(gpiodir, gpio->base + GPIOFSEL(gpio_bank));
-+	spin_unlock_irqrestore(&lock, flags);
-+	gpiodir = readl(gpio->base + GPIOFSEL(gpio_bank));
-+
-+	return 0;
-+}
-+
-+static int bcm2708_gpio_dir_in(struct gpio_chip *gc, unsigned offset)
-+{
-+	return bcm2708_set_function(gc, offset, GPIO_FSEL_INPUT);
-+}
-+
-+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value);
-+static int bcm2708_gpio_dir_out(struct gpio_chip *gc, unsigned offset,
-+				int value)
-+{
-+	int ret;
-+	ret = bcm2708_set_function(gc, offset, GPIO_FSEL_OUTPUT);
-+	if (ret >= 0)
-+		bcm2708_gpio_set(gc, offset, value);
-+	return ret;
-+}
-+
-+static int bcm2708_gpio_get(struct gpio_chip *gc, unsigned offset)
-+{
-+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
-+	unsigned gpio_bank = offset / 32;
-+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
-+	unsigned lev;
-+
-+	if (offset >= BCM2708_NR_GPIOS)
-+		return 0;
-+	lev = readl(gpio->base + GPIOLEV(gpio_bank));
-+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_get %p (%d)=%d\n", gc, offset, 0x1 & (lev>>gpio_field_offset));
-+	return 0x1 & (lev >> gpio_field_offset);
-+}
-+
-+static void bcm2708_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
-+{
-+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
-+	unsigned gpio_bank = offset / 32;
-+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
-+//printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_set %p (%d=%d)\n", gc, offset, value);
-+	if (offset >= BCM2708_NR_GPIOS)
-+		return;
-+	if (value)
-+		writel(1 << gpio_field_offset, gpio->base + GPIOSET(gpio_bank));
-+	else
-+		writel(1 << gpio_field_offset, gpio->base + GPIOCLR(gpio_bank));
-+}
-+
-+/**********************
-+ * extension to configure pullups
-+ */
-+int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
-+		bcm2708_gpio_pull_t value)
-+{
-+	struct bcm2708_gpio *gpio = container_of(gc, struct bcm2708_gpio, gc);
-+	unsigned gpio_bank = offset / 32;
-+	unsigned gpio_field_offset = (offset - 32 * gpio_bank);
-+
-+	if (offset >= BCM2708_NR_GPIOS)
-+		return -EINVAL;
-+
-+	switch (value) {
-+	case BCM2708_PULL_UP:
-+		writel(2, gpio->base + GPIOUD(0));
-+		break;
-+	case BCM2708_PULL_DOWN:
-+		writel(1, gpio->base + GPIOUD(0));
-+		break;
-+	case BCM2708_PULL_OFF:
-+		writel(0, gpio->base + GPIOUD(0));
-+		break;
-+	}
-+
-+	udelay(5);
-+	writel(1 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
-+	udelay(5);
-+	writel(0, gpio->base + GPIOUD(0));
-+	writel(0 << gpio_field_offset, gpio->base + GPIOUDCLK(gpio_bank));
-+
-+	return 0;
-+}
-+EXPORT_SYMBOL(bcm2708_gpio_setpull);
-+
-+/*************************************************************************************************************************
-+ * bcm2708 GPIO IRQ
-+ */
-+
-+#if BCM_GPIO_USE_IRQ
-+
-+static int bcm2708_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
-+{
-+	return gpio_to_irq(gpio);
-+}
-+
-+static int bcm2708_gpio_irq_set_type(struct irq_data *d, unsigned type)
-+{
-+	unsigned irq = d->irq;
-+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
-+	unsigned gn = irq_to_gpio(irq);
-+	unsigned gb = gn / 32;
-+	unsigned go = gn % 32;
-+
-+	gpio->rising[gb]  &= ~(1 << go);
-+	gpio->falling[gb] &= ~(1 << go);
-+	gpio->high[gb]    &= ~(1 << go);
-+	gpio->low[gb]     &= ~(1 << go);
-+
-+	if (type & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING | IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
-+		return -EINVAL;
-+
-+	if (type & IRQ_TYPE_EDGE_RISING)
-+		gpio->rising[gb] |= (1 << go);
-+	if (type & IRQ_TYPE_EDGE_FALLING)
-+		gpio->falling[gb] |= (1 << go);
-+	if (type & IRQ_TYPE_LEVEL_HIGH)
-+		gpio->high[gb] |= (1 << go);
-+	if (type & IRQ_TYPE_LEVEL_LOW)
-+		gpio->low[gb] |= (1 << go);
-+	return 0;
-+}
-+
-+static void bcm2708_gpio_irq_mask(struct irq_data *d)
-+{
-+	unsigned irq = d->irq;
-+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
-+	unsigned gn = irq_to_gpio(irq);
-+	unsigned gb = gn / 32;
-+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
-+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
-+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
-+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
-+
-+	gn = gn % 32;
-+
-+	writel(rising  & ~(1 << gn), gpio->base + GPIOREN(gb));
-+	writel(falling & ~(1 << gn), gpio->base + GPIOFEN(gb));
-+	writel(high    & ~(1 << gn), gpio->base + GPIOHEN(gb));
-+	writel(low     & ~(1 << gn), gpio->base + GPIOLEN(gb));
-+}
-+
-+static void bcm2708_gpio_irq_unmask(struct irq_data *d)
-+{
-+	unsigned irq = d->irq;
-+	struct bcm2708_gpio *gpio = irq_get_chip_data(irq);
-+	unsigned gn = irq_to_gpio(irq);
-+	unsigned gb = gn / 32;
-+	unsigned go = gn % 32;
-+	unsigned long rising  = readl(gpio->base + GPIOREN(gb));
-+	unsigned long falling = readl(gpio->base + GPIOFEN(gb));
-+	unsigned long high    = readl(gpio->base + GPIOHEN(gb));
-+	unsigned long low     = readl(gpio->base + GPIOLEN(gb));
-+
-+	if (gpio->rising[gb] & (1 << go)) {
-+		writel(rising |  (1 << go), gpio->base + GPIOREN(gb));
-+	} else {
-+		writel(rising & ~(1 << go), gpio->base + GPIOREN(gb));
-+	}
-+
-+	if (gpio->falling[gb] & (1 << go)) {
-+		writel(falling |  (1 << go), gpio->base + GPIOFEN(gb));
-+	} else {
-+		writel(falling & ~(1 << go), gpio->base + GPIOFEN(gb));
-+	}
-+
-+	if (gpio->high[gb] & (1 << go)) {
-+		writel(high |  (1 << go), gpio->base + GPIOHEN(gb));
-+	} else {
-+		writel(high & ~(1 << go), gpio->base + GPIOHEN(gb));
-+	}
-+
-+	if (gpio->low[gb] & (1 << go)) {
-+		writel(low |  (1 << go), gpio->base + GPIOLEN(gb));
-+	} else {
-+		writel(low & ~(1 << go), gpio->base + GPIOLEN(gb));
-+	}
-+}
-+
-+static struct irq_chip bcm2708_irqchip = {
-+	.name = "GPIO",
-+	.irq_enable = bcm2708_gpio_irq_unmask,
-+	.irq_disable = bcm2708_gpio_irq_mask,
-+	.irq_unmask = bcm2708_gpio_irq_unmask,
-+	.irq_mask = bcm2708_gpio_irq_mask,
-+	.irq_set_type = bcm2708_gpio_irq_set_type,
-+};
-+
-+static irqreturn_t bcm2708_gpio_interrupt(int irq, void *dev_id)
-+{
-+	unsigned long edsr;
-+	unsigned bank;
-+	int i;
-+	unsigned gpio;
-+	unsigned level_bits;
-+	struct bcm2708_gpio *gpio_data = dev_id;
-+
-+	for (bank = 0; bank < GPIO_BANKS; bank++) {
-+		edsr = readl(__io_address(GPIO_BASE) + GPIOEDS(bank));
-+		level_bits = gpio_data->high[bank] | gpio_data->low[bank];
-+
-+		for_each_set_bit(i, &edsr, 32) {
-+			gpio = i + bank * 32;
-+			/* ack edge triggered IRQs immediately */
-+			if (!(level_bits & (1<<i)))
-+				writel(1<<i,
-+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
-+			generic_handle_irq(gpio_to_irq(gpio));
-+			/* ack level triggered IRQ after handling them */
-+			if (level_bits & (1<<i))
-+				writel(1<<i,
-+				       __io_address(GPIO_BASE) + GPIOEDS(bank));
-+		}
-+	}
-+	return IRQ_HANDLED;
-+}
-+
-+static struct irqaction bcm2708_gpio_irq = {
-+	.name = "BCM2708 GPIO catchall handler",
-+	.flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-+	.handler = bcm2708_gpio_interrupt,
-+};
-+
-+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
-+{
-+	unsigned irq;
-+
-+	ucb->gc.to_irq = bcm2708_gpio_to_irq;
-+
-+	for (irq = GPIO_IRQ_START; irq < (GPIO_IRQ_START + GPIO_IRQS); irq++) {
-+		irq_set_chip_data(irq, ucb);
-+		irq_set_chip_and_handler(irq, &bcm2708_irqchip,
-+					 handle_simple_irq);
-+		set_irq_flags(irq, IRQF_VALID);
-+	}
-+
-+	bcm2708_gpio_irq.dev_id = ucb;
-+	setup_irq(IRQ_GPIO3, &bcm2708_gpio_irq);
-+}
-+
-+#else
-+
-+static void bcm2708_gpio_irq_init(struct bcm2708_gpio *ucb)
-+{
-+}
-+
-+#endif /* #if BCM_GPIO_USE_IRQ ***************************************************************************************************************** */
-+
-+static int bcm2708_gpio_probe(struct platform_device *dev)
-+{
-+	struct bcm2708_gpio *ucb;
-+	struct resource *res;
-+	int bank;
-+	int err = 0;
-+
-+	printk(KERN_INFO DRIVER_NAME ": bcm2708_gpio_probe %p\n", dev);
-+
-+	ucb = kzalloc(sizeof(*ucb), GFP_KERNEL);
-+	if (NULL == ucb) {
-+		printk(KERN_ERR DRIVER_NAME ": failed to allocate "
-+		       "mailbox memory\n");
-+		err = -ENOMEM;
-+		goto err;
-+	}
-+
-+	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-+
-+	platform_set_drvdata(dev, ucb);
-+	ucb->base = __io_address(GPIO_BASE);
-+
-+	ucb->gc.label = "bcm2708_gpio";
-+	ucb->gc.base = 0;
-+	ucb->gc.ngpio = BCM2708_NR_GPIOS;
-+	ucb->gc.owner = THIS_MODULE;
-+
-+	ucb->gc.direction_input = bcm2708_gpio_dir_in;
-+	ucb->gc.direction_output = bcm2708_gpio_dir_out;
-+	ucb->gc.get = bcm2708_gpio_get;
-+	ucb->gc.set = bcm2708_gpio_set;
-+	ucb->gc.can_sleep = 0;
-+
-+	for (bank = 0; bank < GPIO_BANKS; bank++) {
-+		writel(0, ucb->base + GPIOREN(bank));
-+		writel(0, ucb->base + GPIOFEN(bank));
-+		writel(0, ucb->base + GPIOHEN(bank));
-+		writel(0, ucb->base + GPIOLEN(bank));
-+		writel(0, ucb->base + GPIOAREN(bank));
-+		writel(0, ucb->base + GPIOAFEN(bank));
-+		writel(~0, ucb->base + GPIOEDS(bank));
-+	}
-+
-+	bcm2708_gpio_irq_init(ucb);
-+
-+	err = gpiochip_add(&ucb->gc);
-+
-+err:
-+	return err;
-+
-+}
-+
-+static int bcm2708_gpio_remove(struct platform_device *dev)
-+{
-+	int err = 0;
-+	struct bcm2708_gpio *ucb = platform_get_drvdata(dev);
-+
-+	printk(KERN_ERR DRIVER_NAME ": bcm2708_gpio_remove %p\n", dev);
-+
-+	gpiochip_remove(&ucb->gc);
-+
-+	platform_set_drvdata(dev, NULL);
-+	kfree(ucb);
-+
-+	return err;
-+}
-+
-+static struct platform_driver bcm2708_gpio_driver = {
-+	.probe = bcm2708_gpio_probe,
-+	.remove = bcm2708_gpio_remove,
-+	.driver = {
-+		   .name = "bcm2708_gpio"},
-+};
-+
-+static int __init bcm2708_gpio_init(void)
-+{
-+	return platform_driver_register(&bcm2708_gpio_driver);
-+}
-+
-+static void __exit bcm2708_gpio_exit(void)
-+{
-+	platform_driver_unregister(&bcm2708_gpio_driver);
-+}
-+
-+module_init(bcm2708_gpio_init);
-+module_exit(bcm2708_gpio_exit);
-+
-+MODULE_DESCRIPTION("Broadcom BCM2708 GPIO driver");
-+MODULE_LICENSE("GPL");
---- /dev/null
-+++ b/arch/arm/mach-bcm2708/include/mach/gpio.h
-@@ -0,0 +1,17 @@
-+/*
-+ * arch/arm/mach-bcm2708/include/mach/gpio.h
-+ *
-+ * This file is licensed under the terms of the GNU General Public
-+ * License version 2.  This program is licensed "as is" without any
-+ * warranty of any kind, whether express or implied.
-+ */
-+
-+#ifndef __ASM_ARCH_GPIO_H
-+#define __ASM_ARCH_GPIO_H
-+
-+#define BCM2708_NR_GPIOS 54 // number of gpio lines
-+
-+#define gpio_to_irq(x)	((x) + GPIO_IRQ_START)
-+#define irq_to_gpio(x)	((x) - GPIO_IRQ_START)
-+
-+#endif
---- /dev/null
-+++ b/include/linux/platform_data/bcm2708.h
-@@ -0,0 +1,23 @@
-+/*
-+ * include/linux/platform_data/bcm2708.h
-+ *
-+ * 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.
-+ *
-+ * (C) 2014 Julian Scheel <julian@jusst.de>
-+ *
-+ */
-+#ifndef __BCM2708_H_
-+#define __BCM2708_H_
-+
-+typedef enum {
-+	BCM2708_PULL_OFF,
-+	BCM2708_PULL_UP,
-+	BCM2708_PULL_DOWN
-+} bcm2708_gpio_pull_t;
-+
-+extern int bcm2708_gpio_setpull(struct gpio_chip *gc, unsigned offset,
-+		bcm2708_gpio_pull_t value);
-+
-+#endif