Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / arch / arm / cpu / tegra114-common / funcmux.c

diff --git a/arch/arm/cpu/tegra114-common/funcmux.c b/arch/arm/cpu/tegra114-common/funcmux.c
new file mode 100644 (file)
index 0000000..5af7550
--- /dev/null
+++ b/arch/arm/cpu/tegra114-common/funcmux.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2010-2013, 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/>.
+ */
+
+/* Tegra114 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_UART4:
+               switch (config) {
+               case FUNCMUX_UART4_GMI:
+                       pinmux_set_func(PINGRP_GMI_A16, PMUX_FUNC_UARTD);
+                       pinmux_set_func(PINGRP_GMI_A17, PMUX_FUNC_UARTD);
+                       pinmux_set_func(PINGRP_GMI_A18, PMUX_FUNC_UARTD);
+                       pinmux_set_func(PINGRP_GMI_A19, PMUX_FUNC_UARTD);
+
+                       pinmux_set_io(PINGRP_GMI_A16, PMUX_PIN_OUTPUT);
+                       pinmux_set_io(PINGRP_GMI_A17, PMUX_PIN_INPUT);
+                       pinmux_set_io(PINGRP_GMI_A18, PMUX_PIN_INPUT);
+                       pinmux_set_io(PINGRP_GMI_A19, PMUX_PIN_OUTPUT);
+
+                       pinmux_tristate_disable(PINGRP_GMI_A16);
+                       pinmux_tristate_disable(PINGRP_GMI_A17);
+                       pinmux_tristate_disable(PINGRP_GMI_A18);
+                       pinmux_tristate_disable(PINGRP_GMI_A19);
+                       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;
+}