Messages in this thread Patch in this message | | | From | Simon Wood <> | Subject | [PATCH 4/5] HID:hid-logitech: Rewrite of descriptor for all DF wheels | Date | Fri, 9 Sep 2016 16:50:48 -0600 |
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Rewrite the HID descriptor for _all_ Driving Force wheels (real or emulated) so that they can report separate Accelerator and Brake axis.
If the user wants a combined accel/brake axis, they can use the 'combined pedals' feature.
$ echo 1 > /sys/bus/hid/devices/<device-id>/combine_pedals
Signed-off-by: Simon Wood <simon@mungewell.org> --- drivers/hid/hid-lg.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-)
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c index 06f8a5e..53429c6 100644 --- a/drivers/hid/hid-lg.c +++ b/drivers/hid/hid-lg.c @@ -365,18 +365,7 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc, /* Several wheels report as this id when operating in emulation mode. */ case USB_DEVICE_ID_LOGITECH_WHEEL: - udesc = &(hid_to_usb_dev(hdev)->descriptor); - if (!udesc) { - hid_err(hdev, "NULL USB device descriptor\n"); - break; - } - bcdDevice = le16_to_cpu(udesc->bcdDevice); - rev_maj = bcdDevice >> 8; - rev_min = bcdDevice & 0xff; - - /* Update the report descriptor for only the Driving Force wheel */ - if (rev_maj == 1 && rev_min == 2 && - *rsize == DF_RDESC_ORIG_SIZE) { + if (*rsize == DF_RDESC_ORIG_SIZE) { hid_info(hdev, "fixing up Logitech Driving Force report descriptor\n"); rdesc = df_rdesc_fixed; -- 2.7.4
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