39 lines
1 KiB
C
39 lines
1 KiB
C
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/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _LINUX_MSM_GPIOMUX_H
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#define _LINUX_MSM_GPIOMUX_H
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#ifdef CONFIG_MSM_GPIOMUX
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/* Increment a gpio's reference count, possibly activating the line. */
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int __must_check msm_gpiomux_get(unsigned gpio);
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/* Decrement a gpio's reference count, possibly suspending the line. */
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int msm_gpiomux_put(unsigned gpio);
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#else
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static inline int __must_check msm_gpiomux_get(unsigned gpio)
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{
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return -ENOSYS;
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}
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static inline int msm_gpiomux_put(unsigned gpio)
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{
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return -ENOSYS;
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}
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#endif
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#endif /* _LINUX_MSM_GPIOMUX_H */
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