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c4ea1424 SB |
1 | /* |
2 | * | |
3 | * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #ifndef __MXC_GPIO_H | |
25 | #define __MXC_GPIO_H | |
26 | ||
95d18589 MW |
27 | /* Converts a GPIO port number and the internal bit position |
28 | * to the GPIO number | |
29 | */ | |
30 | #define MXC_GPIO_PORT_TO_NUM(port, bit) (((port - 1) << 5) + (bit & 0x1f)) | |
31 | ||
c4ea1424 SB |
32 | enum mxc_gpio_direction { |
33 | MXC_GPIO_DIRECTION_IN, | |
34 | MXC_GPIO_DIRECTION_OUT, | |
35 | }; | |
36 | ||
37 | #ifdef CONFIG_MXC_GPIO | |
38 | extern int mxc_gpio_direction(unsigned int gpio, | |
39 | enum mxc_gpio_direction direction); | |
40 | extern void mxc_gpio_set(unsigned int gpio, unsigned int value); | |
41 | extern int mxc_gpio_get(unsigned int gpio); | |
42 | #else | |
43 | static inline int mxc_gpio_direction(unsigned int gpio, | |
44 | enum mxc_gpio_direction direction) | |
45 | { | |
46 | return 1; | |
47 | } | |
48 | static inline int mxc_gpio_get(unsigned int gpio) | |
49 | { | |
50 | return 1; | |
51 | } | |
52 | static inline void mxc_gpio_set(unsigned int gpio, unsigned int value) | |
53 | { | |
54 | } | |
55 | #endif | |
56 | ||
57 | #endif |