| /* |
| * Copyright (c) 2011 The Chromium OS Authors. |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| /* Tegra20 high-level function multiplexing */ |
| |
| #ifndef __FUNCMUX_H |
| #define __FUNCMUX_H |
| |
| /* Configs supported by the func mux */ |
| enum { |
| FUNCMUX_DEFAULT = 0, /* default config */ |
| |
| /* UART configs */ |
| FUNCMUX_UART1_IRRX_IRTX = 0, |
| FUNCMUX_UART1_UAA_UAB, |
| FUNCMUX_UART1_GPU, |
| FUNCMUX_UART1_SDIO1, |
| FUNCMUX_UART2_IRDA = 0, |
| FUNCMUX_UART4_GMC = 0, |
| |
| /* I2C configs */ |
| FUNCMUX_DVC_I2CP = 0, |
| FUNCMUX_I2C1_RM = 0, |
| FUNCMUX_I2C2_DDC = 0, |
| FUNCMUX_I2C2_PTA, |
| FUNCMUX_I2C3_DTF = 0, |
| |
| /* SDMMC configs */ |
| FUNCMUX_SDMMC1_SDIO1_4BIT = 0, |
| FUNCMUX_SDMMC2_DTA_DTD_8BIT = 0, |
| FUNCMUX_SDMMC3_SDB_4BIT = 0, |
| FUNCMUX_SDMMC3_SDB_SLXA_8BIT, |
| FUNCMUX_SDMMC4_ATC_ATD_8BIT = 0, |
| FUNCMUX_SDMMC4_ATB_GMA_4_BIT, |
| FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT, |
| |
| /* USB configs */ |
| FUNCMUX_USB2_ULPI = 0, |
| |
| /* Serial Flash configs */ |
| FUNCMUX_SPI1_GMC_GMD = 0, |
| |
| /* NAND flags */ |
| FUNCMUX_NDFLASH_ATC = 0, |
| }; |
| |
| /** |
| * Select a config for a particular peripheral. |
| * |
| * Each peripheral can operate through a number of configurations, |
| * which are sets of pins that it uses to bring out its signals. |
| * The basic config is 0, and higher numbers indicate different |
| * pinmux settings to bring the peripheral out on other pins, |
| * |
| * This function also disables tristate for the function's pins, |
| * so that they operate in normal mode. |
| * |
| * @param id Peripheral id |
| * @param config Configuration to use (FUNCMUX_...), 0 for default |
| * @return 0 if ok, -1 on error (e.g. incorrect id or config) |
| */ |
| int funcmux_select(enum periph_id id, int config); |
| |
| #endif |
