HID: support Logitech/3DConnexion SpaceTraveler and SpaceNavigator

These devices wrongly report their axes as relative instead of absolute.

Fix this in up report descriptor of the device before it enters the parser.

Reported-by: simon.windows@gmail.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index 0f870a3243ed..8e28f1dc40a6 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -33,6 +33,7 @@
 #define LG_NOGET                0x100
 #define LG_FF                   0x200
 #define LG_FF2                  0x400
+#define LG_RDESC_REL_ABS        0x800
 
 /*
  * Certain Logitech keyboards send in report #3 keys which are far
@@ -51,6 +52,13 @@ static void lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
                 rdesc[84] = rdesc[89] = 0x4d;
                 rdesc[85] = rdesc[90] = 0x10;
         }
+        if ((quirks & LG_RDESC_REL_ABS) && rsize >= 50 &&
+                        rdesc[32] == 0x81 && rdesc[33] == 0x06 &&
+                        rdesc[49] == 0x81 && rdesc[50] == 0x06) {
+                dev_info(&hdev->dev, "fixing up rel/abs in Logitech "
+                                "report descriptor\n");
+                rdesc[33] = rdesc[50] = 0x02;
+        }
 }
 
 #define lg_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
@@ -303,8 +311,13 @@ static const struct hid_device_id lg_devices[] = {
                 .driver_data = LG_FF },
         { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2),
                 .driver_data = LG_FF2 },
+        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR),
+                .driver_data = LG_RDESC_REL_ABS },
+        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER),
+                .driver_data = LG_RDESC_REL_ABS },
         { }
 };
+
 MODULE_DEVICE_TABLE(hid, lg_devices);
 
 static struct hid_driver lg_driver = {