ARM: tegra: Add header file for pinctrl constants

This new header file defines pincontrol constants for Tegra to
use from Tegra's DTS file for pincontrol properties option.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

include/dt-bindings/pinctrl/pinctrl-tegra.h

+/*
+ * This header provides constants for Tegra pinctrl bindings.
+ *
+ * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * 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.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_TEGRA_H
+#define _DT_BINDINGS_PINCTRL_TEGRA_H
+
+/*
+ * Enable/disable for diffeent dt properties. This is applicable for
+ * properties nvidia,enable-input, nvidia,tristate, nvidia,open-drain,
+ * nvidia,lock, nvidia,rcv-sel, nvidia,high-speed-mode, nvidia,schmitt.
+ */
+#define TEGRA_PIN_DISABLE				0
+#define TEGRA_PIN_ENABLE				1
+
+#define TEGRA_PIN_PULL_NONE				0
+#define TEGRA_PIN_PULL_DOWN				1
+#define TEGRA_PIN_PULL_UP				2
+
+/* Low power mode driver */
+#define TEGRA_PIN_LP_DRIVE_DIV_8			0
+#define TEGRA_PIN_LP_DRIVE_DIV_4			1
+#define TEGRA_PIN_LP_DRIVE_DIV_2			2
+#define TEGRA_PIN_LP_DRIVE_DIV_1			3
+
+/* Rising/Falling slew rate */
+#define TEGRA_PIN_SLEW_RATE_FASTEST			0
+#define TEGRA_PIN_SLEW_RATE_FAST			1
+#define TEGRA_PIN_SLEW_RATE_SLOW			2
+#define TEGRA_PIN_SLEW_RATE_SLOWEST			3
+
+#endif