| Simon Glass | 84a97c5 | 2011-11-28 15:04:38 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2011 The Chromium OS Authors. |
| 3 | * See file CREDITS for list of people who contributed to this |
| 4 | * project. |
| 5 | * |
| 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. |
| 10 | * |
| 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. |
| 15 | * |
| 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, |
| 19 | * MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | /* Tegra2 high-level function multiplexing */ |
| 23 | |
| 24 | #ifndef __FUNCMUX_H |
| 25 | #define __FUNCMUX_H |
| 26 | |
| Simon Glass | 43b1a7c | 2012-01-11 12:42:23 +0000 | [diff] [blame] | 27 | /* Configs supported by the func mux */ |
| 28 | enum { |
| 29 | FUNCMUX_DEFAULT = 0, /* default config */ |
| 30 | |
| 31 | /* UART configs */ |
| 32 | FUNCMUX_UART1_IRRX_IRTX = 0, |
| 33 | FUNCMUX_UART2_IRDA = 0, |
| 34 | FUNCMUX_UART4_GMC = 0, |
| Simon Glass | d8c03b8 | 2012-01-11 12:42:24 +0000 | [diff] [blame] | 35 | |
| 36 | /* I2C configs */ |
| 37 | FUNCMUX_DVC_I2CP = 0, |
| 38 | FUNCMUX_I2C1_RM = 0, |
| 39 | FUNCMUX_I2C2_DDC = 0, |
| 40 | FUNCMUX_I2C2_PTA, |
| 41 | FUNCMUX_I2C3_DTF = 0, |
| Simon Glass | fb1ea63 | 2012-01-11 12:42:25 +0000 | [diff] [blame] | 42 | |
| 43 | /* SDMMC configs */ |
| 44 | FUNCMUX_SDMMC2_DTA_DTD_8BIT = 0, |
| 45 | FUNCMUX_SDMMC3_SDB_4BIT = 0, |
| 46 | FUNCMUX_SDMMC3_SDB_SLXA_8BIT, |
| 47 | FUNCMUX_SDMMC4_ATC_ATD_8BIT = 0, |
| 48 | FUNCMUX_SDMMC4_ATB_GMA_4_BIT, |
| 49 | FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT, |
| Simon Glass | 43b1a7c | 2012-01-11 12:42:23 +0000 | [diff] [blame] | 50 | }; |
| 51 | |
| Simon Glass | 84a97c5 | 2011-11-28 15:04:38 +0000 | [diff] [blame] | 52 | /** |
| 53 | * Select a config for a particular peripheral. |
| 54 | * |
| 55 | * Each peripheral can operate through a number of configurations, |
| 56 | * which are sets of pins that it uses to bring out its signals. |
| 57 | * The basic config is 0, and higher numbers indicate different |
| 58 | * pinmux settings to bring the peripheral out on other pins, |
| 59 | * |
| Simon Glass | 3ba99a3 | 2012-01-11 12:42:22 +0000 | [diff] [blame] | 60 | * This function also disables tristate for the function's pins, |
| 61 | * so that they operate in normal mode. |
| 62 | * |
| Simon Glass | 84a97c5 | 2011-11-28 15:04:38 +0000 | [diff] [blame] | 63 | * @param id Peripheral id |
| Simon Glass | 43b1a7c | 2012-01-11 12:42:23 +0000 | [diff] [blame] | 64 | * @param config Configuration to use (FUNCMUX_...), 0 for default |
| Simon Glass | 84a97c5 | 2011-11-28 15:04:38 +0000 | [diff] [blame] | 65 | * @return 0 if ok, -1 on error (e.g. incorrect id or config) |
| 66 | */ |
| 67 | int funcmux_select(enum periph_id id, int config); |
| 68 | |
| 69 | #endif |