HID: LG: Prevent the Logitech Gaming Wheels deadzone

This patch ensures that the Logitech wheels are not initialised with
default fuzz/flat values, by marking them as multiaxis devices (rather
than joysticks).

Signed-off-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index c06559803fd8..5d3c861e2c5b 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -479,6 +479,26 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi,
                          usage->type == EV_REL || usage->type == EV_ABS))
                 clear_bit(usage->code, *bit);
 
+        /* Ensure that Logitech wheels are not given a default fuzz/flat value */
+        if (usage->type == EV_ABS && (usage->code == ABS_X ||
+                        usage->code == ABS_Y || usage->code == ABS_Z ||
+                        usage->code == ABS_RZ)) {
+                switch (hdev->product) {
+                case USB_DEVICE_ID_LOGITECH_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_DFP_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_G25_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_G27_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_WII_WHEEL:
+                case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2:
+                        field->application = HID_GD_MULTIAXIS;
+                        break;
+                default:
+                        break;
+                }
+        }
+
         return 0;
 }