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authorH Hartley Sweeten <hartleys@visionengravers.com>2009-04-18 23:43:57 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2009-04-18 23:44:59 -0700
commite06003af56c386018f0c209608ac6c6662228cc0 (patch)
tree4db5a03163a51f900dc3f777929017b92dedca7b /arch
parent864fe73c312ca8e177da01207ce86fb1b80b3e54 (diff)
Input: add matrix keypad driver for Cirrus EP93xx
This is a keyboard driver for the Cirrus Logic EP93xx keypad matrix peripheral. This driver is based on the pxa27x_keypad driver. [dtor@mail.ru: Plug in input_dev->keycode so keymap can be changed from userspace.] Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
new file mode 100644
index 00000000000..83f31cd0a27
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
@@ -0,0 +1,42 @@
+/*
+ * arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
+ */
+
+#ifndef __ASM_ARCH_EP93XX_KEYPAD_H
+#define __ASM_ARCH_EP93XX_KEYPAD_H
+
+#define MAX_MATRIX_KEY_ROWS (8)
+#define MAX_MATRIX_KEY_COLS (8)
+
+/* flags for the ep93xx_keypad driver */
+#define EP93XX_KEYPAD_DISABLE_3_KEY (1<<0) /* disable 3-key reset */
+#define EP93XX_KEYPAD_DIAG_MODE (1<<1) /* diagnostic mode */
+#define EP93XX_KEYPAD_BACK_DRIVE (1<<2) /* back driving mode */
+#define EP93XX_KEYPAD_TEST_MODE (1<<3) /* scan only column 0 */
+#define EP93XX_KEYPAD_KDIV (1<<4) /* 1/4 clock or 1/16 clock */
+#define EP93XX_KEYPAD_AUTOREPEAT (1<<5) /* enable key autorepeat */
+
+/**
+ * struct ep93xx_keypad_platform_data - platform specific device structure
+ * @matrix_key_rows: number of rows in the keypad matrix
+ * @matrix_key_cols: number of columns in the keypad matrix
+ * @matrix_key_map: array of keycodes defining the keypad matrix
+ * @matrix_key_map_size: ARRAY_SIZE(matrix_key_map)
+ * @debounce: debounce start count; terminal count is 0xff
+ * @prescale: row/column counter pre-scaler load value
+ * @flags: see above
+ */
+struct ep93xx_keypad_platform_data {
+ unsigned int matrix_key_rows;
+ unsigned int matrix_key_cols;
+ unsigned int *matrix_key_map;
+ int matrix_key_map_size;
+ unsigned int debounce;
+ unsigned int prescale;
+ unsigned int flags;
+};
+
+/* macro for creating the matrix_key_map table */
+#define KEY(row, col, val) (((row) << 28) | ((col) << 24) | (val))
+
+#endif /* __ASM_ARCH_EP93XX_KEYPAD_H */