Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / platform_data / keypad-pxa27x.h

diff --git a/kernel/include/linux/platform_data/keypad-pxa27x.h b/kernel/include/linux/platform_data/keypad-pxa27x.h
new file mode 100644 (file)
index 0000000..2462556
--- /dev/null
+++ b/kernel/include/linux/platform_data/keypad-pxa27x.h
@@ -0,0 +1,72 @@
+#ifndef __ASM_ARCH_PXA27x_KEYPAD_H
+#define __ASM_ARCH_PXA27x_KEYPAD_H
+
+#include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
+
+#define MAX_MATRIX_KEY_ROWS    (8)
+#define MAX_MATRIX_KEY_COLS    (8)
+#define MATRIX_ROW_SHIFT       (3)
+#define MAX_DIRECT_KEY_NUM     (8)
+
+/* pxa3xx keypad platform specific parameters
+ *
+ * NOTE:
+ * 1. direct_key_num indicates the number of keys in the direct keypad
+ *    _plus_ the number of rotary-encoder sensor inputs,  this can be
+ *    left as 0 if only rotary encoders are enabled,  the driver will
+ *    automatically calculate this
+ *
+ * 2. direct_key_map is the key code map for the direct keys, if rotary
+ *    encoder(s) are enabled, direct key 0/1(2/3) will be ignored
+ *
+ * 3. rotary can be either interpreted as a relative input event (e.g.
+ *    REL_WHEEL/REL_HWHEEL) or specific keys (e.g. UP/DOWN/LEFT/RIGHT)
+ *
+ * 4. matrix key and direct key will use the same debounce_interval by
+ *    default, which should be sufficient in most cases
+ *
+ * pxa168 keypad platform specific parameter
+ *
+ * NOTE:
+ * clear_wakeup_event callback is a workaround required to clear the
+ * keypad interrupt. The keypad wake must be cleared in addition to
+ * reading the MI/DI bits in the KPC register.
+ */
+struct pxa27x_keypad_platform_data {
+
+       /* code map for the matrix keys */
+       const struct matrix_keymap_data *matrix_keymap_data;
+       unsigned int    matrix_key_rows;
+       unsigned int    matrix_key_cols;
+
+       /* direct keys */
+       int             direct_key_num;
+       unsigned int    direct_key_map[MAX_DIRECT_KEY_NUM];
+       /* the key output may be low active */
+       int             direct_key_low_active;
+       /* give board a chance to choose the start direct key */
+       unsigned int    direct_key_mask;
+
+       /* rotary encoders 0 */
+       int             enable_rotary0;
+       int             rotary0_rel_code;
+       int             rotary0_up_key;
+       int             rotary0_down_key;
+
+       /* rotary encoders 1 */
+       int             enable_rotary1;
+       int             rotary1_rel_code;
+       int             rotary1_up_key;
+       int             rotary1_down_key;
+
+       /* key debounce interval */
+       unsigned int    debounce_interval;
+
+       /* clear wakeup event requirement for pxa168 */
+       void            (*clear_wakeup_event)(void);
+};
+
+extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);
+
+#endif /* __ASM_ARCH_PXA27x_KEYPAD_H */