Update from 2013.01 to 2013.07

[karo-tx-uboot.git] / arch / arm / include / asm / arch-tegra / funcmux.h

diff --git a/arch/arm/include/asm/arch-tegra/funcmux.h b/arch/arm/include/asm/arch-tegra/funcmux.h
new file mode 100644 (file)
index 0000000..f101e5e
--- /dev/null
+++ b/arch/arm/include/asm/arch-tegra/funcmux.h
@@ -0,0 +1,39 @@
+/*
+ * 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/>.
+ */
+
+/* Tegra high-level function multiplexing */
+
+#ifndef _TEGRA_FUNCMUX_H_
+#define _TEGRA_FUNCMUX_H_
+
+/**
+ * Select a config for a particular peripheral.
+ *
+ * Each peripheral can operate through a number of configurations,
+ * which are sets of pins that it uses to bring out its signals.
+ * The basic config is 0, and higher numbers indicate different
+ * pinmux settings to bring the peripheral out on other pins,
+ *
+ * This function also disables tristate for the function's pins,
+ * so that they operate in normal mode.
+ *
+ * @param id           Peripheral id
+ * @param config       Configuration to use (FUNCMUX_...), 0 for default
+ * @return 0 if ok, -1 on error (e.g. incorrect id or config)
+ */
+int funcmux_select(enum periph_id id, int config);
+
+#endif /* _TEGRA_FUNCMUX_H_ */