+++ /dev/null
-From c7eee1285590f15010feaf91970b9e3447e757f4 Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Wed, 8 Oct 2014 18:50:05 +0100
-Subject: [PATCH 002/222] 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 | 25 ++
- arch/arm/mach-bcm2708/bcm2708_gpio.c | 426 ++++++++++++++++++++++++++++++
- arch/arm/mach-bcm2708/include/mach/gpio.h | 17 ++
- arch/arm/mach-bcm2709/bcm2709.c | 25 ++
- include/linux/platform_data/bcm2708.h | 23 ++
- 7 files changed, 525 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
-@@ -20,6 +20,14 @@ config BCM2708_DT
- help
- Enable Device Tree support for BCM2708
-
-+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_NOL2CACHE
- bool "Videocore L2 cache disable"
- depends on MACH_BCM2708
---- a/arch/arm/mach-bcm2708/Makefile
-+++ b/arch/arm/mach-bcm2708/Makefile
-@@ -3,3 +3,4 @@
- #
-
- obj-$(CONFIG_MACH_BCM2708) += bcm2708.o armctrl.o
-+obj-$(CONFIG_BCM2708_GPIO) += bcm2708_gpio.o
---- a/arch/arm/mach-bcm2708/bcm2708.c
-+++ b/arch/arm/mach-bcm2708/bcm2708.c
-@@ -298,6 +298,31 @@ 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
-+
- int __init bcm_register_device(struct platform_device *pdev)
- {
- int ret;
---- /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_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
---- a/arch/arm/mach-bcm2709/bcm2709.c
-+++ b/arch/arm/mach-bcm2709/bcm2709.c
-@@ -329,6 +329,31 @@ 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
-+
- int __init bcm_register_device(struct platform_device *pdev)
- {
- int ret;
---- /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
projects / openwrt.git / blobdiff