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bcee8d6764
At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass is included in SPL/TPL without any control for boards. Some boards may want to disable this to reduce code size where GPIOs are not needed in SPL or TPL. Add a new Kconfig option to permit this. Default it to 'y' so that existing boards work correctly. Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to preserve the current behaviour. Also update the 74x164 GPIO driver since it cannot build with SPL. This allows us to remove the hacks in config_uncmd_spl.h and Makefile.uncmd_spl (eventually those files should be removed). Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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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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* 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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#if CONFIG_IS_ENABLED(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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const char *port_name;
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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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};
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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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