Tegra30: Add common CPU (shared) files

[karo-tx-uboot.git] / arch / arm / cpu / tegra30-common / funcmux.c

diff --git a/arch/arm/cpu/tegra30-common/funcmux.c b/arch/arm/cpu/tegra30-common/funcmux.c
new file mode 100644 (file)
index 0000000..e24c57e
--- /dev/null
+++ b/arch/arm/cpu/tegra30-common/funcmux.c
@@ -0,0 +1,57 @@
+/*
+ * 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(PINGRP_ULPI_DATA0, PMUX_FUNC_UARTA);
+                       pinmux_set_func(PINGRP_ULPI_DATA1, PMUX_FUNC_UARTA);
+                       pinmux_set_func(PINGRP_ULPI_DATA2, PMUX_FUNC_UARTA);
+                       pinmux_set_func(PINGRP_ULPI_DATA3, PMUX_FUNC_UARTA);
+                       pinmux_tristate_disable(PINGRP_ULPI_DATA0);
+                       pinmux_tristate_disable(PINGRP_ULPI_DATA1);
+                       pinmux_tristate_disable(PINGRP_ULPI_DATA2);
+                       pinmux_tristate_disable(PINGRP_ULPI_DATA3);
+                       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;
+}