1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c
new file mode 100644
index 0000000000..0878f51110
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra2/funcmux.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* Tegra2 high-level function multiplexing */
+#include <common.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/pinmux.h>
+
+int funcmux_select(enum periph_id id, int config)
+{
+	if (config != 0) {
+		debug("%s: invalid config %d for periph_id %d", __func__,
+		      config, id);
+		return -1;
+	}
+	switch (id) {
+	case PERIPH_ID_UART1:
+		pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA);
+		pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA);
+		pinmux_tristate_disable(PINGRP_IRRX);
+		pinmux_tristate_disable(PINGRP_IRTX);
+		break;
+
+	case PERIPH_ID_UART2:
+		pinmux_set_func(PINGRP_UAD, PMUX_FUNC_IRDA);
+		pinmux_tristate_disable(PINGRP_UAD);
+		break;
+
+	case PERIPH_ID_UART4:
+		pinmux_set_func(PINGRP_GMC, PMUX_FUNC_UARTD);
+		pinmux_tristate_disable(PINGRP_GMC);
+		break;
+
+	default:
+		debug("%s: invalid periph_id %d", __func__, id);
+		return -1;
+	}
+
+	return 0;
+}