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 /* Tegra20 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,
36 FUNCMUX_UART2_IRDA = 0,
37 FUNCMUX_UART4_GMC = 0,
47 FUNCMUX_SDMMC1_SDIO1_4BIT = 0,
48 FUNCMUX_SDMMC2_DTA_DTD_8BIT = 0,
49 FUNCMUX_SDMMC3_SDB_4BIT = 0,
50 FUNCMUX_SDMMC3_SDB_SLXA_8BIT,
51 FUNCMUX_SDMMC4_ATC_ATD_8BIT = 0,
52 FUNCMUX_SDMMC4_ATB_GMA_4_BIT,
53 FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT,
56 FUNCMUX_USB2_ULPI = 0,
58 /* Serial Flash configs */
59 FUNCMUX_SPI1_GMC_GMD = 0,
62 FUNCMUX_NDFLASH_ATC = 0,
66 * Select a config for a particular peripheral.
68 * Each peripheral can operate through a number of configurations,
69 * which are sets of pins that it uses to bring out its signals.
70 * The basic config is 0, and higher numbers indicate different
71 * pinmux settings to bring the peripheral out on other pins,
73 * This function also disables tristate for the function's pins,
74 * so that they operate in normal mode.
76 * @param id Peripheral id
77 * @param config Configuration to use (FUNCMUX_...), 0 for default
78 * @return 0 if ok, -1 on error (e.g. incorrect id or config)
80 int funcmux_select(enum periph_id id, int config);