HID: Add mapping for Microsoft Win8 Wireless Radio Controls extensions

Microsoft has defined some extra HUT codes for the Generic Desktop Page
for Wireless Radio controls, see:

https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/airplane-mode-radio-management
https://web.archive.org/web/20170509144631/https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/airplane-mode-radio-management

I've 3 2-in-1 keyboard docks: Dell Venue Pro 11 keyboard dock,
HP pavilion x2 keyboard dock and a PEAQ C1010 keyboard dock which have
a wireless radio toggle hotkey, which uses the 0x000100c6 HUT code
defined in these extensions.

This commit adds a mapping for this key, this makes the rfkill toggle
hotkey work on the Dell Venue Pro 11 and HP Pavilion X2 keyboards,
the PEAQ C1010 keyboard does generate events for the 0x000100c6 HUT
code when pressed, but the reported value is always 0.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index a1ebdd7d4d4d01c7942beb9e988a6fb36dd94714..412040b11268f14d822a1b2b01b639c2d6ee6ce0 100644 (file)
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -656,6 +656,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                case HID_GD_START:      map_key_clear(BTN_START);       break;
                case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 
+               case HID_GD_RFKILL_BTN:
+                       /* MS wireless radio ctl extension, also check CA */
+                       if (field->application == 0x0001000c) {
+                               map_key_clear(KEY_RFKILL);
+                               /* We need to simulate the btn release */
+                               field->flags |= HID_MAIN_ITEM_RELATIVE;
+                               break;
+                       }
+
                default: goto unknown;
                }
 

diff --git a/include/linux/hid.h b/include/linux/hid.h
index 5be325d890d96f9d823753e92296c379e3751076..0b29466bbc217ba8ddc07cd856705b185f51c742 100644 (file)
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -182,6 +182,12 @@ struct hid_item {
 #define HID_GD_KEYBOARD                0x00010006
 #define HID_GD_KEYPAD          0x00010007
 #define HID_GD_MULTIAXIS       0x00010008
+/*
+ * Microsoft Win8 Wireless Radio Controls extensions CA, see (checked 09052017):
+ * https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/airplane-mode-radio-management
+ * https://web.archive.org/web/20170509144631/https://docs.microsoft.com/en-us/windows-hardware/drivers/hid/airplane-mode-radio-management
+ */
+#define HID_GD_WIRELESS_RADIO_CTLS     0x0001000c
 #define HID_GD_X               0x00010030
 #define HID_GD_Y               0x00010031
 #define HID_GD_Z               0x00010032
@@ -210,6 +216,10 @@ struct hid_item {
 #define HID_GD_DOWN            0x00010091
 #define HID_GD_RIGHT           0x00010092
 #define HID_GD_LEFT            0x00010093
+/* Microsoft Win8 Wireless Radio Controls CA usage codes */
+#define HID_GD_RFKILL_BTN      0x000100c6
+#define HID_GD_RFKILL_LED      0x000100c7
+#define HID_GD_RFKILL_SWITCH   0x000100c8
 
 #define HID_DC_BATTERYSTRENGTH 0x00060020