29c349d22c
The default value passed through to pxa_gpio_mode() is lost due to a missing GPIO_DFLT_HIGH mask for nonzero values. The enclosed patch fixes this programming error. Signed-off-by: Bill Gatliff <bgat@billgatliff.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
82 lines
2 KiB
C
82 lines
2 KiB
C
/*
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* linux/include/asm-arm/arch-pxa/gpio.h
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*
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* PXA GPIO wrappers for arch-neutral GPIO calls
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*
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* Written 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_PXA_GPIO_H
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#define __ASM_ARCH_PXA_GPIO_H
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#include <asm/arch/pxa-regs.h>
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#include <asm/irq.h>
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#include <asm/hardware.h>
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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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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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return pxa_gpio_mode(gpio | GPIO_IN);
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}
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static inline int gpio_direction_output(unsigned gpio, int value)
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{
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return pxa_gpio_mode(gpio | GPIO_OUT |
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(value ? GPIO_DFLT_HIGH : GPIO_DFLT_LOW));
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}
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static inline int __gpio_get_value(unsigned gpio)
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{
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return GPLR(gpio) & GPIO_bit(gpio);
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}
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#define gpio_get_value(gpio) \
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(__builtin_constant_p(gpio) ? \
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__gpio_get_value(gpio) : \
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pxa_gpio_get_value(gpio))
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static inline void __gpio_set_value(unsigned gpio, int value)
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{
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if (value)
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GPSR(gpio) = GPIO_bit(gpio);
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else
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GPCR(gpio) = GPIO_bit(gpio);
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}
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#define gpio_set_value(gpio,value) \
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(__builtin_constant_p(gpio) ? \
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__gpio_set_value(gpio, value) : \
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pxa_gpio_set_value(gpio, value))
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#include <asm-generic/gpio.h> /* cansleep wrappers */
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#define gpio_to_irq(gpio) IRQ_GPIO(gpio)
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#define irq_to_gpio(irq) IRQ_TO_GPIO(irq)
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#endif
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