Linux Kernel  3.7.1
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portmux.h
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1 /*
2  * AT32 portmux interface.
3  *
4  * Copyright (C) 2006 Atmel Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  */
10 #ifndef __ASM_ARCH_PORTMUX_H__
11 #define __ASM_ARCH_PORTMUX_H__
12 
13 /*
14  * Set up pin multiplexing, called from board init only.
15  *
16  * The following flags determine the initial state of the pin.
17  */
18 #define AT32_GPIOF_PULLUP 0x00000001 /* (not-OUT) Enable pull-up */
19 #define AT32_GPIOF_OUTPUT 0x00000002 /* (OUT) Enable output driver */
20 #define AT32_GPIOF_HIGH 0x00000004 /* (OUT) Set output high */
21 #define AT32_GPIOF_DEGLITCH 0x00000008 /* (IN) Filter glitches */
22 #define AT32_GPIOF_MULTIDRV 0x00000010 /* Enable multidriver option */
23 
24 void at32_select_periph(unsigned int port, unsigned int pin,
25  unsigned int periph, unsigned long flags);
26 void at32_select_gpio(unsigned int pin, unsigned long flags);
27 void at32_deselect_pin(unsigned int pin);
28 void at32_reserve_pin(unsigned int port, u32 pin_mask);
29 
30 #endif /* __ASM_ARCH_PORTMUX_H__ */