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Diffstat (limited to 'include/linux/platform_data/keypad-omap.h')
-rw-r--r--include/linux/platform_data/keypad-omap.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/platform_data/keypad-omap.h b/include/linux/platform_data/keypad-omap.h
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+++ b/include/linux/platform_data/keypad-omap.h
@@ -0,0 +1,52 @@
+/*
+ * arch/arm/plat-omap/include/mach/keypad.h
+ *
+ * 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 ASMARM_ARCH_KEYPAD_H
+#define ASMARM_ARCH_KEYPAD_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
+