1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (c) 2010-2012, NVIDIA CORPORATION.  All rights reserved.
4  */
5 
6 /* Tegra high-level function multiplexing */
7 
8 #ifndef _TEGRA_FUNCMUX_H_
9 #define _TEGRA_FUNCMUX_H_
10 
11 /**
12  * Select a config for a particular peripheral.
13  *
14  * Each peripheral can operate through a number of configurations,
15  * which are sets of pins that it uses to bring out its signals.
16  * The basic config is 0, and higher numbers indicate different
17  * pinmux settings to bring the peripheral out on other pins,
18  *
19  * This function also disables tristate for the function's pins,
20  * so that they operate in normal mode.
21  *
22  * @param id		Peripheral id
23  * @param config	Configuration to use (FUNCMUX_...), 0 for default
24  * @return 0 if ok, -1 on error (e.g. incorrect id or config)
25  */
26 int funcmux_select(enum periph_id id, int config);
27 
28 #endif	/* _TEGRA_FUNCMUX_H_ */
29