projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7fdda678 MD |
1 | /* |
| 2 | * Generic GPIO API and pinmux table support | |
| 3 | * | |
| 4 | * Copyright (c) 2008 Magnus Damm | |
| 5 | * | |
| 6 | * This file is subject to the terms and conditions of the GNU General Public | |
| 7 | * License. See the file "COPYING" in the main directory of this archive | |
| 8 | * for more details. | |
| 9 | */ | |
| 10 | #ifndef __ASM_ARCH_GPIO_H | |
| 11 | #define __ASM_ARCH_GPIO_H | |
| 12 | ||
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/errno.h> | |
| 4f3d7f65 | 15 | #include <linux/io.h> |
| 7fdda678 | 16 | |
| 4f3d7f65 KM |
17 | /* |
| 18 | * FIXME !! | |
| 19 | * | |
| 20 | * current gpio frame work doesn't have | |
| 21 | * the method to control only pull up/down/free. | |
| 22 | * this function should be replaced by correct gpio function | |
| 23 | */ | |
| 0a4b04dc | 24 | static inline void __init gpio_direction_none(void __iomem * addr) |
| 4f3d7f65 KM |
25 | { |
| 26 | __raw_writeb(0x00, addr); | |
| 27 | } | |
| 28 | ||
| 0a4b04dc | 29 | static inline void __init gpio_request_pullup(void __iomem * addr) |
| 4f3d7f65 KM |
30 | { |
| 31 | u8 data = __raw_readb(addr); | |
| 32 | ||
| 33 | data &= 0x0F; | |
| 34 | data |= 0xC0; | |
| 35 | __raw_writeb(data, addr); | |
| 36 | } | |
| 37 | ||
| 0a4b04dc | 38 | static inline void __init gpio_request_pulldown(void __iomem * addr) |
| 4f3d7f65 KM |
39 | { |
| 40 | u8 data = __raw_readb(addr); | |
| 41 | ||
| 42 | data &= 0x0F; | |
| 43 | data |= 0xA0; | |
| 44 | ||
| 45 | __raw_writeb(data, addr); | |
| 46 | } | |
| 47 | ||
| 7fdda678 | 48 | #endif /* __ASM_ARCH_GPIO_H */ |