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/*
* 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,
};
/**
* 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
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