HID: asus: support Republic of Gamers special keys

Add support for the special keys found on the internal keyboard of the
Asus Republic of Gamers (ROG) laptop models GL553VD, GL553VE, GL753VD
and GL753VE.

Signed-off-by: Chris Chiu <chiu@endlessm.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

4 files changed, 46 insertions, 1 deletions

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index b22bcefd5e85..de4ed3752a4e 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -137,11 +137,14 @@ config HID_APPLEIR
 config HID_ASUS
         tristate "Asus"
         ---help---
-        Support for Asus notebook built-in keyboard and touchpad via i2c.
+        Support for Asus notebook built-in keyboard and touchpad via i2c, and
+        the Asus Republic of Gamers laptop keyboard special keys.
 
         Supported devices:
         - EeeBook X205TA
         - VivoBook E200HA
+        - GL553V series
+        - GL753V series
 
 config HID_AUREAL
         tristate "Aureal"
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index 70b12f89a193..5bae6ffcae94 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -199,6 +199,8 @@ static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
         return 0;
 }
 
+#define rog_map_key_clear(c)    hid_map_usage_clear(hi, usage, bit, \
+                                                    max, EV_KEY, (c))
 static int asus_input_mapping(struct hid_device *hdev,
                 struct hid_input *hi, struct hid_field *field,
                 struct hid_usage *usage, unsigned long **bit,
@@ -213,6 +215,38 @@ static int asus_input_mapping(struct hid_device *hdev,
                 return -1;
         }
 
+        /* ASUS Republic of Gamers laptop keyboard hotkeys */
+        if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
+                set_bit(EV_REP, hi->input->evbit);
+                switch (usage->hid & HID_USAGE) {
+                case 0x10: rog_map_key_clear(KEY_BRIGHTNESSDOWN);       break;
+                case 0x20: rog_map_key_clear(KEY_BRIGHTNESSUP);         break;
+                case 0x35: rog_map_key_clear(KEY_DISPLAY_OFF);          break;
+                case 0x6c: rog_map_key_clear(KEY_SLEEP);                break;
+                case 0x82: rog_map_key_clear(KEY_CAMERA);               break;
+                case 0x88: rog_map_key_clear(KEY_WLAN);                 break;
+                case 0xb5: rog_map_key_clear(KEY_CALC);                 break;
+                case 0xc4: rog_map_key_clear(KEY_KBDILLUMUP);           break;
+                case 0xc5: rog_map_key_clear(KEY_KBDILLUMDOWN);         break;
+
+                /* ASUS touchpad toggle */
+                case 0x6b: rog_map_key_clear(KEY_F21);                  break;
+
+                /* ROG key */
+                case 0x38: rog_map_key_clear(KEY_PROG1);                break;
+
+                /* Fn+C ASUS Splendid */
+                case 0xba: rog_map_key_clear(KEY_PROG2);                break;
+
+                /* Fn+Space Power4Gear Hybrid */
+                case 0x5c: rog_map_key_clear(KEY_PROG3);                break;
+
+                default:
+                        return 0;
+                }
+                return 1;
+        }
+
         return 0;
 }
 
@@ -323,6 +357,10 @@ static const struct hid_device_id asus_devices[] = {
                  USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD), KEYBOARD_QUIRKS},
         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
                          USB_DEVICE_ID_ASUSTEK_TOUCHPAD), TOUCHPAD_QUIRKS },
+        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
+                USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
+                USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
         { }
 };
 MODULE_DEVICE_TABLE(hid, asus_devices);
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 3ceb4a2af381..5408bce3428b 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1854,6 +1854,8 @@ static const struct hid_device_id hid_have_special_driver[] = {
         { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD) },
         { HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_TOUCHPAD) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2) },
         { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
         { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 0e2e7c571d22..ae4e90f166d3 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -175,6 +175,8 @@
 #define USB_DEVICE_ID_ASUSTEK_LCM2      0x175b
 #define USB_DEVICE_ID_ASUSTEK_NOTEBOOK_KEYBOARD 0x8585
 #define USB_DEVICE_ID_ASUSTEK_TOUCHPAD  0x0101
+#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1 0x1854
+#define USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2 0x1837
 
 #define USB_VENDOR_ID_ATEN              0x0557
 #define USB_DEVICE_ID_ATEN_UC100KM      0x2004