2 * Copyright (c) 2011 The Chromium OS Authors.
3 * See file CREDITS for list of people who contributed to this
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 /* Tegra2 high-level function multiplexing */
27 /* Configs supported by the func mux */
29 FUNCMUX_DEFAULT = 0, /* default config */
32 FUNCMUX_UART1_IRRX_IRTX = 0,
33 FUNCMUX_UART2_IRDA = 0,
34 FUNCMUX_UART4_GMC = 0,
38 * Select a config for a particular peripheral.
40 * Each peripheral can operate through a number of configurations,
41 * which are sets of pins that it uses to bring out its signals.
42 * The basic config is 0, and higher numbers indicate different
43 * pinmux settings to bring the peripheral out on other pins,
45 * This function also disables tristate for the function's pins,
46 * so that they operate in normal mode.
48 * @param id Peripheral id
49 * @param config Configuration to use (FUNCMUX_...), 0 for default
50 * @return 0 if ok, -1 on error (e.g. incorrect id or config)
52 int funcmux_select(enum periph_id id, int config);