HID: asus: Add support for the ASUS FX503VD laptop

The ASUS FX503VD laptop uses an USB keyboard with several hotkeys
which use the Asus Vendor specific UsagePage.

This uses two usage-codes within the page which have not been seen
before, 0x7c for its mic-mute hotkey and 0x99 for Fn+F5 which has
a "fan" symbol as hotkey symbol on the keyb. we map this to KEY_PROG4
(PROG1-PROG3 are already used).

This commit adds the mappings for the 2 new usage codes and the USB-ids
for this keyboard to the hid-asus driver.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/hid-asus.c

@@ -522,6 +522,7 @@ static int asus_input_mapping(struct hid_device *hdev,
 		case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP);		break;
 		case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF);		break;
 		case 0x6c: asus_map_key_clear(KEY_SLEEP);		break;
+		case 0x7c: asus_map_key_clear(KEY_MICMUTE);		break;
 		case 0x82: asus_map_key_clear(KEY_CAMERA);		break;
 		case 0x88: asus_map_key_clear(KEY_RFKILL);			break;
 		case 0xb5: asus_map_key_clear(KEY_CALC);			break;
@@ -540,6 +541,9 @@ static int asus_input_mapping(struct hid_device *hdev,
 		/* Fn+Space Power4Gear Hybrid */
 		case 0x5c: asus_map_key_clear(KEY_PROG3);		break;
 
+		/* Fn+F5 "fan" symbol on FX503VD */
+		case 0x99: asus_map_key_clear(KEY_PROG4);		break;
+
 		default:
 			/* ASUS lazily declares 256 usages, ignore the rest,
 			 * as some make the keyboard appear as a pointer device. */
@@ -817,6 +821,9 @@ static const struct hid_device_id asus_devices[] = {
 		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3), QUIRK_G752_KEYBOARD },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
+		USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD),
+	  QUIRK_USE_KBD_BACKLIGHT },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
 		USB_DEVICE_ID_ASUSTEK_T100TA_KEYBOARD),
 	  QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },

drivers/hid/hid-ids.h

@@ -190,6 +190,7 @@
 #define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1 0x1854
 #define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2 0x1837
 #define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD3 0x1822
+#define USB_DEVICE_ID_ASUSTEK_FX503VD_KEYBOARD	0x1869
 
 #define USB_VENDOR_ID_ATEN		0x0557
 #define USB_DEVICE_ID_ATEN_UC100KM	0x2004