diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra30/funcmux.c')
-rw-r--r-- | arch/arm/mach-tegra/tegra30/funcmux.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra30/funcmux.c b/arch/arm/mach-tegra/tegra30/funcmux.c new file mode 100644 index 00000000000..409335ce1d1 --- /dev/null +++ b/arch/arm/mach-tegra/tegra30/funcmux.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>. + */ + +/* Tegra30 high-level function multiplexing */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/funcmux.h> +#include <asm/arch/pinmux.h> + +int funcmux_select(enum periph_id id, int config) +{ + int bad_config = config != FUNCMUX_DEFAULT; + + switch (id) { + case PERIPH_ID_UART1: + switch (config) { + case FUNCMUX_UART1_ULPI: + pinmux_set_func(PMUX_PINGRP_ULPI_DATA0_PO1, + PMUX_FUNC_UARTA); + pinmux_set_func(PMUX_PINGRP_ULPI_DATA1_PO2, + PMUX_FUNC_UARTA); + pinmux_set_func(PMUX_PINGRP_ULPI_DATA2_PO3, + PMUX_FUNC_UARTA); + pinmux_set_func(PMUX_PINGRP_ULPI_DATA3_PO4, + PMUX_FUNC_UARTA); + pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA0_PO1); + pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA1_PO2); + pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA2_PO3); + pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA3_PO4); + break; + } + break; + + /* Add other periph IDs here as needed */ + + default: + debug("%s: invalid periph_id %d", __func__, id); + return -1; + } + + if (bad_config) { + debug("%s: invalid config %d for periph_id %d", __func__, + config, id); + return -1; + } + return 0; +} |