HID: asus: Add T100CHI bluetooth keyboard dock special keys mapping
The Asus Transformer T100CHI comes with a Bluetooth keyboard dock which
uses the same 0xff31 Asus vendor HUT page as other Asus keyboards.
This commit adds its device-id to hid-asus and fixes an issue in the
descriptor of the 0xff31 Usage, which together fixes the special keys
on this keyboard not working.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c
index b2501b6..43fb4a3 100644
--- a/drivers/hid/hid-asus.c
+++ b/drivers/hid/hid-asus.c
@@ -65,6 +65,7 @@ MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
#define QUIRK_NO_CONSUMER_USAGES BIT(4)
#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
#define QUIRK_T100_KEYBOARD BIT(6)
+#define QUIRK_T100CHI BIT(7)
#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
QUIRK_NO_INIT_REPORTS | \
@@ -619,11 +620,34 @@ static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
rdesc[55] = 0xdd;
}
+ /* For the T100TA keyboard dock */
if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
*rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) {
hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
}
+ /* For the T100CHI keyboard dock */
+ if (drvdata->quirks & QUIRK_T100CHI &&
+ *rsize == 403 && rdesc[388] == 0x09 && rdesc[389] == 0x76) {
+ /*
+ * Change Usage (76h) to Usage Minimum (00h), Usage Maximum
+ * (FFh) and clear the flags in the Input() byte.
+ * Note the descriptor has a bogus 0 byte at the end so we
+ * only need 1 extra byte.
+ */
+ *rsize = 404;
+ rdesc = kmemdup(rdesc, *rsize, GFP_KERNEL);
+ if (!rdesc)
+ return NULL;
+
+ hid_info(hdev, "Fixing up T100CHI keyb report descriptor\n");
+ memmove(rdesc + 392, rdesc + 390, 12);
+ rdesc[388] = 0x19;
+ rdesc[389] = 0x00;
+ rdesc[390] = 0x29;
+ rdesc[391] = 0xff;
+ rdesc[402] = 0x00;
+ }
return rdesc;
}
@@ -643,6 +667,9 @@ static const struct hid_device_id asus_devices[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
{ HID_USB_DEVICE(USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_ASUS_MD_5110) },
{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
+ USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD), QUIRK_T100CHI },
+
{ }
};
MODULE_DEVICE_TABLE(hid, asus_devices);