forked from luck/tmp_suning_uos_patched
96886c4361
Currently, to define a GPIO number, we're using something like : #define EFIKAMX_PCBID0 (2*32 + 16) to define GPIO 3 16. This is not really readable and it's error prone imho (note the 3 vs 2). So, I'm introducing a new macro to define this in a better way. Now, the code sample become : #define EFIKAMX_PCBID0 IMX_GPIO_NR(3, 16) v2: - move to gpio.h - add parens & spaces - switch to IMX_GPIO_NR instead of MX51_GPIO_NR Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org> Cc: Amit Kucheria <amit.kucheria@linaro.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Eric Bénard <eric@eukrea.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/*
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* Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __ASM_ARCH_MXC_GPIO_H__
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#define __ASM_ARCH_MXC_GPIO_H__
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#include <linux/spinlock.h>
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#include <mach/hardware.h>
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#include <asm-generic/gpio.h>
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/* There's a off-by-one betweem the gpio bank number and the gpiochip */
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/* range e.g. GPIO_1_5 is gpio 5 under linux */
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#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr))
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/* use gpiolib dispatchers */
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#define gpio_get_value __gpio_get_value
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#define gpio_set_value __gpio_set_value
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#define gpio_cansleep __gpio_cansleep
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#define gpio_to_irq(gpio) (MXC_GPIO_IRQ_START + (gpio))
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#define irq_to_gpio(irq) ((irq) - MXC_GPIO_IRQ_START)
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struct mxc_gpio_port {
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void __iomem *base;
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int irq;
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int irq_high;
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int virtual_irq_start;
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struct gpio_chip chip;
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u32 both_edges;
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spinlock_t lock;
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};
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int mxc_gpio_init(struct mxc_gpio_port*, int);
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#endif
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