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Stefano Babicc4ea1422010-07-06 17:05:06 +02001/*
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
Matthias Weisser95d18582011-07-06 00:28:32 +000027/* 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
Stefano Babicc4ea1422010-07-06 17:05:06 +020032enum mxc_gpio_direction {
33 MXC_GPIO_DIRECTION_IN,
34 MXC_GPIO_DIRECTION_OUT,
35};
36
37#ifdef CONFIG_MXC_GPIO
38extern int mxc_gpio_direction(unsigned int gpio,
39 enum mxc_gpio_direction direction);
40extern void mxc_gpio_set(unsigned int gpio, unsigned int value);
41extern int mxc_gpio_get(unsigned int gpio);
42#else
43static inline int mxc_gpio_direction(unsigned int gpio,
44 enum mxc_gpio_direction direction)
45{
46 return 1;
47}
48static inline int mxc_gpio_get(unsigned int gpio)
49{
50 return 1;
51}
52static inline void mxc_gpio_set(unsigned int gpio, unsigned int value)
53{
54}
55#endif
56
57#endif