Input: of_keymap - add device tree bindings for simple key matrices
This adds a simple device tree binding for simple key matrix data and
a helper to fill in the platform data.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h
index fe7c4b9..6c07ced 100644
--- a/include/linux/input/matrix_keypad.h
+++ b/include/linux/input/matrix_keypad.h
@@ -3,6 +3,7 @@
#include <linux/types.h>
#include <linux/input.h>
+#include <linux/of.h>
#define MATRIX_MAX_ROWS 32
#define MATRIX_MAX_COLS 32
@@ -106,4 +107,22 @@
__clear_bit(KEY_RESERVED, keybit);
}
+#ifdef CONFIG_INPUT_OF_MATRIX_KEYMAP
+struct matrix_keymap_data *
+matrix_keyboard_of_fill_keymap(struct device_node *np, const char *propname);
+
+void matrix_keyboard_of_free_keymap(const struct matrix_keymap_data *kd);
+#else
+static inline struct matrix_keymap_data *
+matrix_keyboard_of_fill_keymap(struct device_node *np, const char *propname)
+{
+ return NULL;
+}
+
+static inline void
+matrix_keyboard_of_free_keymap(const struct matrix_keymap_data *kd)
+{
+}
+#endif
+
#endif /* _MATRIX_KEYPAD_H */