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Rather than marking the mach/gpio.h header files which want to use the trivial GPIOLIB implementation, mark those which do not want to use it instead. This means that by default, you get the trivial implementation and only have to do something extra if you need to. This should encourage the use of the trivial default implementation. As an additional bonus, several gpio.h header files become empty. Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Tested-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/*
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* arch/arm/mach-ixp4xx/include/mach/gpio.h
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*
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* IXP4XX GPIO wrappers for arch-neutral GPIO calls
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*
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* Written by Milan Svoboda <msvoboda@ra.rockwell.com>
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* Based on PXA implementation by Philipp Zabel <philipp.zabel@gmail.com>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __ASM_ARCH_IXP4XX_GPIO_H
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#define __ASM_ARCH_IXP4XX_GPIO_H
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#include <linux/kernel.h>
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#include <mach/hardware.h>
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#define __ARM_GPIOLIB_COMPLEX
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static inline int gpio_request(unsigned gpio, 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 gpio)
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{
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might_sleep();
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return;
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}
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static inline int gpio_direction_input(unsigned gpio)
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{
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gpio_line_config(gpio, IXP4XX_GPIO_IN);
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return 0;
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}
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static inline int gpio_direction_output(unsigned gpio, int level)
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{
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gpio_line_set(gpio, level);
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gpio_line_config(gpio, IXP4XX_GPIO_OUT);
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return 0;
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}
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static inline int gpio_get_value(unsigned gpio)
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{
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int value;
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gpio_line_get(gpio, &value);
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return value;
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}
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static inline void gpio_set_value(unsigned gpio, int value)
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{
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gpio_line_set(gpio, value);
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}
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#include <asm-generic/gpio.h> /* cansleep wrappers */
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extern int gpio_to_irq(int gpio);
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#define gpio_to_irq gpio_to_irq
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extern int irq_to_gpio(unsigned int irq);
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#endif
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