1 /* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
2  *
3  * This program is free software; you can redistribute it and/or modify
4  * it under the terms of the GNU General Public License version 2 and
5  * only version 2 as published by the Free Software Foundation.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10  * GNU General Public License for more details.
11  */
12 
13 #ifndef _LINUX_MSM_GPIOMUX_H
14 #define _LINUX_MSM_GPIOMUX_H
15 
16 #ifdef CONFIG_MSM_GPIOMUX
17 
18 /* Increment a gpio's reference count, possibly activating the line. */
19 int __must_check msm_gpiomux_get(unsigned gpio);
20 
21 /* Decrement a gpio's reference count, possibly suspending the line. */
22 int msm_gpiomux_put(unsigned gpio);
23 
24 #else
25 
msm_gpiomux_get(unsigned gpio)26 static inline int __must_check msm_gpiomux_get(unsigned gpio)
27 {
28 	return -ENOSYS;
29 }
30 
msm_gpiomux_put(unsigned gpio)31 static inline int msm_gpiomux_put(unsigned gpio)
32 {
33 	return -ENOSYS;
34 }
35 
36 #endif
37 
38 #endif /* _LINUX_MSM_GPIOMUX_H */
39