1 /* 2 * Copyright (c) 2010-2013, NVIDIA CORPORATION. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 /* Tegra114 high-level function multiplexing */ 18 19 #include <common.h> 20 #include <asm/arch/clock.h> 21 #include <asm/arch/funcmux.h> 22 #include <asm/arch/pinmux.h> 23 24 int funcmux_select(enum periph_id id, int config) 25 { 26 int bad_config = config != FUNCMUX_DEFAULT; 27 28 switch (id) { 29 case PERIPH_ID_UART4: 30 switch (config) { 31 case FUNCMUX_UART4_GMI: 32 pinmux_set_func(PMUX_PINGRP_GMI_A16_PJ7, 33 PMUX_FUNC_UARTD); 34 pinmux_set_func(PMUX_PINGRP_GMI_A17_PB0, 35 PMUX_FUNC_UARTD); 36 pinmux_set_func(PMUX_PINGRP_GMI_A18_PB1, 37 PMUX_FUNC_UARTD); 38 pinmux_set_func(PMUX_PINGRP_GMI_A19_PK7, 39 PMUX_FUNC_UARTD); 40 41 pinmux_set_io(PMUX_PINGRP_GMI_A16_PJ7, PMUX_PIN_OUTPUT); 42 pinmux_set_io(PMUX_PINGRP_GMI_A17_PB0, PMUX_PIN_INPUT); 43 pinmux_set_io(PMUX_PINGRP_GMI_A18_PB1, PMUX_PIN_INPUT); 44 pinmux_set_io(PMUX_PINGRP_GMI_A19_PK7, PMUX_PIN_OUTPUT); 45 46 pinmux_tristate_disable(PMUX_PINGRP_GMI_A16_PJ7); 47 pinmux_tristate_disable(PMUX_PINGRP_GMI_A17_PB0); 48 pinmux_tristate_disable(PMUX_PINGRP_GMI_A18_PB1); 49 pinmux_tristate_disable(PMUX_PINGRP_GMI_A19_PK7); 50 break; 51 } 52 break; 53 54 /* Add other periph IDs here as needed */ 55 56 default: 57 debug("%s: invalid periph_id %d", __func__, id); 58 return -1; 59 } 60 61 if (bad_config) { 62 debug("%s: invalid config %d for periph_id %d", __func__, 63 config, id); 64 return -1; 65 } 66 return 0; 67 } 68