1 /* 2 * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 /* Tegra high-level function multiplexing */ 18 19 #ifndef _TEGRA_FUNCMUX_H_ 20 #define _TEGRA_FUNCMUX_H_ 21 22 /** 23 * Select a config for a particular peripheral. 24 * 25 * Each peripheral can operate through a number of configurations, 26 * which are sets of pins that it uses to bring out its signals. 27 * The basic config is 0, and higher numbers indicate different 28 * pinmux settings to bring the peripheral out on other pins, 29 * 30 * This function also disables tristate for the function's pins, 31 * so that they operate in normal mode. 32 * 33 * @param id Peripheral id 34 * @param config Configuration to use (FUNCMUX_...), 0 for default 35 * @return 0 if ok, -1 on error (e.g. incorrect id or config) 36 */ 37 int funcmux_select(enum periph_id id, int config); 38 39 #endif /* _TEGRA_FUNCMUX_H_ */ 40