Input: HID - add support for fn key on Apple PowerBooks

This patch implements support for the fn key on Apple PowerBooks using
USB based keyboards and makes them behave like their ADB counterparts.

Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch>
Acked-by: Rene Nussbaumer <linux-kernel@killerfox.forkbomb.ch>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 19 insertions, 12 deletions

diff --git a/drivers/usb/input/hid.h b/drivers/usb/input/hid.h
index 335316c7233b..8b0d4346ce9c 100644
--- a/drivers/usb/input/hid.h
+++ b/drivers/usb/input/hid.h
@@ -235,18 +235,20 @@ struct hid_item {
  * HID device quirks.
  */
 
-#define HID_QUIRK_INVERT                        0x001
-#define HID_QUIRK_NOTOUCH                       0x002
-#define HID_QUIRK_IGNORE                        0x004
-#define HID_QUIRK_NOGET                         0x008
-#define HID_QUIRK_HIDDEV                        0x010
-#define HID_QUIRK_BADPAD                        0x020
-#define HID_QUIRK_MULTI_INPUT                   0x040
-#define HID_QUIRK_2WHEEL_MOUSE_HACK_7           0x080
-#define HID_QUIRK_2WHEEL_MOUSE_HACK_5           0x100
-#define HID_QUIRK_2WHEEL_MOUSE_HACK_ON          0x200
-#define HID_QUIRK_2WHEEL_POWERMOUSE             0x400
-#define HID_QUIRK_CYMOTION                      0x800
+#define HID_QUIRK_INVERT                        0x00000001
+#define HID_QUIRK_NOTOUCH                       0x00000002
+#define HID_QUIRK_IGNORE                        0x00000004
+#define HID_QUIRK_NOGET                         0x00000008
+#define HID_QUIRK_HIDDEV                        0x00000010
+#define HID_QUIRK_BADPAD                        0x00000020
+#define HID_QUIRK_MULTI_INPUT                   0x00000040
+#define HID_QUIRK_2WHEEL_MOUSE_HACK_7           0x00000080
+#define HID_QUIRK_2WHEEL_MOUSE_HACK_5           0x00000100
+#define HID_QUIRK_2WHEEL_MOUSE_HACK_ON          0x00000200
+#define HID_QUIRK_2WHEEL_POWERMOUSE             0x00000400
+#define HID_QUIRK_CYMOTION                      0x00000800
+#define HID_QUIRK_POWERBOOK_HAS_FN              0x00001000
+#define HID_QUIRK_POWERBOOK_FN_ON               0x00002000
 
 /*
  * This is the global environment of the parser. This information is
@@ -432,6 +434,11 @@ struct hid_device {							/* device report descriptor */
         void (*ff_exit)(struct hid_device*);                            /* Called by hid_exit_ff(hid) */
         int (*ff_event)(struct hid_device *hid, struct input_dev *input,
                         unsigned int type, unsigned int code, int value);
+
+#ifdef CONFIG_USB_HIDINPUT_POWERBOOK
+        unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
+        unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
+#endif
 };
 
 #define HID_GLOBAL_STACK_SIZE 4