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5915a2ad0d
Add driver model support to this driver, while retaining support for the legacy system. Driver model GPIO support is enabled with CONFIG_DM_GPIO as usual. Since gpio_is_valid() no longer exists, we can use the -EINVAL error returned from gpio_request(). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@ti.com>
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* SPDX-License-Identifier: GPL-2.0
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*
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* This work is derived from the linux 2.6.27 kernel source
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* To fetch, use the kernel repository
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* git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
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* Use the v2.6.27 tag.
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*
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* Below is the original's header including its copyright
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*
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* linux/arch/arm/plat-omap/gpio.c
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*
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* Support functions for OMAP GPIO
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*
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* Copyright (C) 2003-2005 Nokia Corporation
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* Written by Juha Yrjölä <juha.yrjola@nokia.com>
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*/
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#ifndef _GPIO_H
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#define _GPIO_H
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#include <asm/arch/cpu.h>
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enum gpio_method {
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METHOD_GPIO_24XX = 4,
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};
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#ifdef CONFIG_DM_GPIO
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/* Information about a GPIO bank */
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struct omap_gpio_platdata {
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int bank_index;
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ulong base; /* address of registers in physical memory */
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enum gpio_method method;
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};
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#else
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struct gpio_bank {
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void *base;
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int method;
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};
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extern const struct gpio_bank *const omap_gpio_bank;
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/**
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* Check if gpio is valid.
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*
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* @param gpio GPIO number
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* @return 1 if ok, 0 on error
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*/
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int gpio_is_valid(int gpio);
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#endif
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#endif /* _GPIO_H_ */
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