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diff --git a/include/linux/pinctrl/machine.h b/include/linux/pinctrl/machine.h
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+/*
+ * Machine interface for the pinctrl subsystem.
+ *
+ * Copyright (C) 2011 ST-Ericsson SA
+ * Written on behalf of Linaro for ST-Ericsson
+ * Based on bits of regulator core, gpio core and clk core
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+#ifndef __LINUX_PINMUX_MACHINE_H
+#define __LINUX_PINMUX_MACHINE_H
+
+/**
+ * struct pinmux_map - boards/machines shall provide this map for devices
+ * @name: the name of this specific map entry for the particular machine.
+ * This is the second parameter passed to pinmux_get() when you want
+ * to have several mappings to the same device
+ * @ctrl_dev: the pin control device to be used by this mapping, may be NULL
+ * if you provide .ctrl_dev_name instead (this is more common)
+ * @ctrl_dev_name: the name of the device controlling this specific mapping,
+ * the name must be the same as in your struct device*, may be NULL if
+ * you provide .ctrl_dev instead
+ * @function: a function in the driver to use for this mapping, the driver
+ * will lookup the function referenced by this ID on the specified
+ * pin control device
+ * @group: sometimes a function can map to different pin groups, so this
+ * selects a certain specific pin group to activate for the function, if
+ * left as NULL, the first applicable group will be used
+ * @dev: the device using this specific mapping, may be NULL if you provide
+ * .dev_name instead (this is more common)
+ * @dev_name: the name of the device using this specific mapping, the name
+ * must be the same as in your struct device*, may be NULL if you
+ * provide .dev instead
+ * @hog_on_boot: if this is set to true, the pin control subsystem will itself
+ * hog the mappings as the pinmux device drivers are attached, so this is
+ * typically used with system maps (mux mappings without an assigned
+ * device) that you want to get hogged and enabled by default as soon as
+ * a pinmux device supporting it is registered. These maps will not be
+ * disabled and put until the system shuts down.
+ */
+struct pinmux_map {
+ const char *name;
+ struct device *ctrl_dev;
+ const char *ctrl_dev_name;
+ const char *function;
+ const char *group;
+ struct device *dev;
+ const char *dev_name;
+ const bool hog_on_boot;
+};
+
+/*
+ * Convenience macro to set a simple map from a certain pin controller and a
+ * certain function to a named device
+ */
+#define PINMUX_MAP(a, b, c, d) \
+ { .name = a, .ctrl_dev_name = b, .function = c, .dev_name = d }
+
+/*
+ * Convenience macro to map a system function onto a certain pinctrl device.
+ * System functions are not assigned to a particular device.
+ */
+#define PINMUX_MAP_SYS(a, b, c) \
+ { .name = a, .ctrl_dev_name = b, .function = c }
+
+/*
+ * Convenience macro to map a function onto the primary device pinctrl device
+ * this is especially helpful on systems that have only one pin controller
+ * or need to set up a lot of mappings on the primary controller.
+ */
+#define PINMUX_MAP_PRIMARY(a, b, c) \
+ { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b, \
+ .dev_name = c }
+
+/*
+ * Convenience macro to map a system function onto the primary pinctrl device.
+ * System functions are not assigned to a particular device.
+ */
+#define PINMUX_MAP_PRIMARY_SYS(a, b) \
+ { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b }
+
+/*
+ * Convenience macro to map a system function onto the primary pinctrl device,
+ * to be hogged by the pinmux core until the system shuts down.
+ */
+#define PINMUX_MAP_PRIMARY_SYS_HOG(a, b) \
+ { .name = a, .ctrl_dev_name = "pinctrl.0", .function = b, \
+ .hog_on_boot = true }
+
+
+#ifdef CONFIG_PINMUX
+
+extern int pinmux_register_mappings(struct pinmux_map const *map,
+ unsigned num_maps);
+
+#else
+
+static inline int pinmux_register_mappings(struct pinmux_map const *map,
+ unsigned num_maps)
+{
+ return 0;
+}
+
+#endif /* !CONFIG_PINMUX */
+#endif