[linux-2.6-block.git] / arch / arm / mach-msm / include / mach / msm_gpiomux.h

/* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _LINUX_MSM_GPIOMUX_H
#define _LINUX_MSM_GPIOMUX_H

#ifdef CONFIG_MSM_GPIOMUX

/* Increment a gpio's reference count, possibly activating the line. */
int __must_check msm_gpiomux_get(unsigned gpio);

/* Decrement a gpio's reference count, possibly suspending the line. */
int msm_gpiomux_put(unsigned gpio);

#else

static inline int __must_check msm_gpiomux_get(unsigned gpio)
{
	return -ENOSYS;
}

static inline int msm_gpiomux_put(unsigned gpio)
{
	return -ENOSYS;
}

#endif

#endif /* _LINUX_MSM_GPIOMUX_H */
Commit	Line	Data
030a77fc DB	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
	26	static inline int __must_check msm_gpiomux_get(unsigned gpio)
	27	{
	28	return -ENOSYS;
	29	}
	30
	31	static inline int msm_gpiomux_put(unsigned gpio)
	32	{
	33	return -ENOSYS;
	34	}
	35
	36	#endif
	37
	38	#endif /* _LINUX_MSM_GPIOMUX_H */