9c6568501c
According to the documentation gpio_free should only be called from task context only. To make this more explicit add a might sleep to all implementations. This patch changes the gpio_free implementations for the arm architecture. DaVinci is skipped on purpose to simplify the merge process for patches switching it over to use gpiolib as per request by David Brownell. Signed-off-by: Uwe Kleine-König <ukleinek@informatik.uni-freiburg.de> Cc: David Brownell <david-b@pacbell.net> Cc: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
82 lines
1.7 KiB
C
82 lines
1.7 KiB
C
/*
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* arch/arm/mach-ks8695/include/mach/gpio.h
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*
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* Copyright (C) 2006 Andrew Victor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_GPIO_H_
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#define __ASM_ARCH_GPIO_H_
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#include <linux/kernel.h>
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#define KS8695_GPIO_0 0
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#define KS8695_GPIO_1 1
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#define KS8695_GPIO_2 2
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#define KS8695_GPIO_3 3
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#define KS8695_GPIO_4 4
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#define KS8695_GPIO_5 5
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#define KS8695_GPIO_6 6
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#define KS8695_GPIO_7 7
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#define KS8695_GPIO_8 8
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#define KS8695_GPIO_9 9
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#define KS8695_GPIO_10 10
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#define KS8695_GPIO_11 11
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#define KS8695_GPIO_12 12
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#define KS8695_GPIO_13 13
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#define KS8695_GPIO_14 14
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#define KS8695_GPIO_15 15
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/*
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* Configure GPIO pin as external interrupt source.
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*/
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int __init_or_module ks8695_gpio_interrupt(unsigned int pin, unsigned int type);
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/*
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* Configure the GPIO line as an input.
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*/
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int __init_or_module gpio_direction_input(unsigned int pin);
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/*
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* Configure the GPIO line as an output, with default state.
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*/
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int __init_or_module gpio_direction_output(unsigned int pin, unsigned int state);
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/*
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* Set the state of an output GPIO line.
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*/
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void gpio_set_value(unsigned int pin, unsigned int state);
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/*
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* Read the state of a GPIO line.
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*/
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int gpio_get_value(unsigned int pin);
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/*
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* Map GPIO line to IRQ number.
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*/
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int gpio_to_irq(unsigned int pin);
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/*
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* Map IRQ number to GPIO line.
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*/
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int irq_to_gpio(unsigned int irq);
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#include <asm-generic/gpio.h>
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static inline int gpio_request(unsigned int pin, const char *label)
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{
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return 0;
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}
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static inline void gpio_free(unsigned int pin)
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{
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might_sleep();
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}
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#endif
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