diff options
Diffstat (limited to 'arch/arm/mach-ns9xxx/gpio.c')
-rw-r--r-- | arch/arm/mach-ns9xxx/gpio.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/arch/arm/mach-ns9xxx/gpio.c b/arch/arm/mach-ns9xxx/gpio.c deleted file mode 100644 index 5503ca09c4a..00000000000 --- a/arch/arm/mach-ns9xxx/gpio.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * arch/arm/mach-ns9xxx/gpio.c - * - * Copyright (C) 2006,2007 by Digi International 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/kernel.h> -#include <linux/compiler.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/module.h> -#include <linux/bitops.h> - -#include <mach/gpio.h> -#include <mach/processor.h> -#include <mach/processor-ns9360.h> -#include <asm/bug.h> -#include <asm/types.h> - -#include "gpio-ns9360.h" - -#if defined(CONFIG_PROCESSOR_NS9360) -#define GPIO_MAX 72 -#elif defined(CONFIG_PROCESSOR_NS9750) -#define GPIO_MAX 49 -#endif - -/* protects BBU_GCONFx and BBU_GCTRLx */ -static spinlock_t gpio_lock = __SPIN_LOCK_UNLOCKED(gpio_lock); - -/* only access gpiores with atomic ops */ -static DECLARE_BITMAP(gpiores, GPIO_MAX + 1); - -static inline int ns9xxx_valid_gpio(unsigned gpio) -{ -#if defined(CONFIG_PROCESSOR_NS9360) - if (processor_is_ns9360()) - return gpio <= 72; - else -#endif -#if defined(CONFIG_PROCESSOR_NS9750) - if (processor_is_ns9750()) - return gpio <= 49; - else -#endif - { - BUG(); - return 0; - } -} - -int gpio_request(unsigned gpio, const char *label) -{ - if (likely(ns9xxx_valid_gpio(gpio))) - return test_and_set_bit(gpio, gpiores) ? -EBUSY : 0; - else - return -EINVAL; -} -EXPORT_SYMBOL(gpio_request); - -void gpio_free(unsigned gpio) -{ - might_sleep(); - clear_bit(gpio, gpiores); - return; -} -EXPORT_SYMBOL(gpio_free); - -int gpio_direction_input(unsigned gpio) -{ - if (likely(ns9xxx_valid_gpio(gpio))) { - int ret = -EINVAL; - unsigned long flags; - - spin_lock_irqsave(&gpio_lock, flags); -#if defined(CONFIG_PROCESSOR_NS9360) - if (processor_is_ns9360()) - ret = __ns9360_gpio_configure(gpio, 0, 0, 3); - else -#endif - BUG(); - - spin_unlock_irqrestore(&gpio_lock, flags); - - return ret; - - } else - return -EINVAL; -} -EXPORT_SYMBOL(gpio_direction_input); - -int gpio_direction_output(unsigned gpio, int value) -{ - if (likely(ns9xxx_valid_gpio(gpio))) { - int ret = -EINVAL; - unsigned long flags; - - gpio_set_value(gpio, value); - - spin_lock_irqsave(&gpio_lock, flags); -#if defined(CONFIG_PROCESSOR_NS9360) - if (processor_is_ns9360()) - ret = __ns9360_gpio_configure(gpio, 1, 0, 3); - else -#endif - BUG(); - - spin_unlock_irqrestore(&gpio_lock, flags); - - return ret; - } else - return -EINVAL; -} -EXPORT_SYMBOL(gpio_direction_output); - -int gpio_get_value(unsigned gpio) -{ -#if defined(CONFIG_PROCESSOR_NS9360) - if (processor_is_ns9360()) - return ns9360_gpio_get_value(gpio); - else -#endif - { - BUG(); - return -EINVAL; - } -} -EXPORT_SYMBOL(gpio_get_value); - -void gpio_set_value(unsigned gpio, int value) -{ - unsigned long flags; - spin_lock_irqsave(&gpio_lock, flags); -#if defined(CONFIG_PROCESSOR_NS9360) - if (processor_is_ns9360()) - ns9360_gpio_set_value(gpio, value); - else -#endif - BUG(); - - spin_unlock_irqrestore(&gpio_lock, flags); -} -EXPORT_SYMBOL(gpio_set_value); |