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e7f70b8cc6
at32_reserve_pin() can be used for reserving portmux pins without altering their configuration. Useful for e.g. SDRAM pins where we really don't want to change the bootloader-provided configuration. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
29 lines
957 B
C
29 lines
957 B
C
/*
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* AT32 portmux interface.
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*
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* Copyright (C) 2006 Atmel Corporation
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_PORTMUX_H__
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#define __ASM_ARCH_PORTMUX_H__
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/*
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* Set up pin multiplexing, called from board init only.
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*
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* The following flags determine the initial state of the pin.
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*/
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#define AT32_GPIOF_PULLUP 0x00000001 /* (not-OUT) Enable pull-up */
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#define AT32_GPIOF_OUTPUT 0x00000002 /* (OUT) Enable output driver */
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#define AT32_GPIOF_HIGH 0x00000004 /* (OUT) Set output high */
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#define AT32_GPIOF_DEGLITCH 0x00000008 /* (IN) Filter glitches */
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void at32_select_periph(unsigned int pin, unsigned int periph,
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unsigned long flags);
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void at32_select_gpio(unsigned int pin, unsigned long flags);
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void at32_reserve_pin(unsigned int pin);
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#endif /* __ASM_ARCH_PORTMUX_H__ */
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