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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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14cb0deb66
The GPIO registers need protection from concurrent access for operations that are not atomic. Cc: stable@kernel.org Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: Daniel Mack <daniel@caiaq.de> Reported-by: rpkamiak@rockwellcollins.com Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
46 lines
1.4 KiB
C
46 lines
1.4 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 <mach/hardware.h>
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#include <asm-generic/gpio.h>
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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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