Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / platform_data / keypad-omap.h

diff --git a/kernel/include/linux/platform_data/keypad-omap.h b/kernel/include/linux/platform_data/keypad-omap.h
new file mode 100644 (file)
index 0000000..c3a3aba
--- /dev/null
+++ b/kernel/include/linux/platform_data/keypad-omap.h
@@ -0,0 +1,50 @@
+/*
+ *  Copyright (C) 2006 Komal Shah <komal_shah802003@yahoo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __KEYPAD_OMAP_H
+#define __KEYPAD_OMAP_H
+
+#ifndef CONFIG_ARCH_OMAP1
+#warning Please update the board to use matrix-keypad driver
+#define omap_readw(reg)                0
+#define omap_writew(val, reg)  do {} while (0)
+#endif
+#include <linux/input/matrix_keypad.h>
+
+struct omap_kp_platform_data {
+       int rows;
+       int cols;
+       const struct matrix_keymap_data *keymap_data;
+       bool rep;
+       unsigned long delay;
+       bool dbounce;
+       /* specific to OMAP242x*/
+       unsigned int *row_gpios;
+       unsigned int *col_gpios;
+};
+
+/* Group (0..3) -- when multiple keys are pressed, only the
+ * keys pressed in the same group are considered as pressed. This is
+ * in order to workaround certain crappy HW designs that produce ghost
+ * keypresses. Two free bits, not used by neither row/col nor keynum,
+ * must be available for use as group bits. The below GROUP_SHIFT
+ * macro definition is based on some prior knowledge of the
+ * matrix_keypad defined KEY() macro internals.
+ */
+#define GROUP_SHIFT    14
+#define GROUP_0                (0 << GROUP_SHIFT)
+#define GROUP_1                (1 << GROUP_SHIFT)
+#define GROUP_2                (2 << GROUP_SHIFT)
+#define GROUP_3                (3 << GROUP_SHIFT)
+#define GROUP_MASK     GROUP_3
+#if KEY_MAX & GROUP_MASK
+#error Group bits in conflict with keynum bits
+#endif
+
+
+#endif
+