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_UART1_UAA_UAB,
34 FUNCMUX_UART2_IRDA = 0,
35 FUNCMUX_UART4_GMC = 0,
45 FUNCMUX_SDMMC2_DTA_DTD_8BIT = 0,
46 FUNCMUX_SDMMC3_SDB_4BIT = 0,
47 FUNCMUX_SDMMC3_SDB_SLXA_8BIT,
48 FUNCMUX_SDMMC4_ATC_ATD_8BIT = 0,
49 FUNCMUX_SDMMC4_ATB_GMA_4_BIT,
50 FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT,
54 * Select a config for a particular peripheral.
56 * Each peripheral can operate through a number of configurations,
57 * which are sets of pins that it uses to bring out its signals.
58 * The basic config is 0, and higher numbers indicate different
59 * pinmux settings to bring the peripheral out on other pins,
61 * This function also disables tristate for the function's pins,
62 * so that they operate in normal mode.
64 * @param id Peripheral id
65 * @param config Configuration to use (FUNCMUX_...), 0 for default
66 * @return 0 if ok, -1 on error (e.g. incorrect id or config)
68 int funcmux_select(enum periph_id id, int config);