From 29fae1c85166ef525b8b6518e749295e0c9d1e20 Mon Sep 17 00:00:00 2001 From: Simon Wood Date: Mon, 2 Nov 2015 07:56:52 -0700 Subject: HID: logitech: Add support for G29 At present the G29 is mis-identified as a DFGT, this patch ensures that the wheel is correctly detected and allows setting the LEDs and turning range via the '/sys' interface. This wheel can also emulate other types of Logitech wheels. Signed-off-by: Simon Wood Signed-off-by: Jiri Kosina --- drivers/hid/hid-lg.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/hid/hid-lg.c') diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c index 5332fb7d072a..c20ac76c0a8c 100644 --- a/drivers/hid/hid-lg.c +++ b/drivers/hid/hid-lg.c @@ -620,6 +620,7 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi, usage->code == ABS_Y || usage->code == ABS_Z || usage->code == ABS_RZ)) { switch (hdev->product) { + case USB_DEVICE_ID_LOGITECH_G29_WHEEL: case USB_DEVICE_ID_LOGITECH_WHEEL: case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL: case USB_DEVICE_ID_LOGITECH_DFP_WHEEL: @@ -658,10 +659,18 @@ static int lg_event(struct hid_device *hdev, struct hid_field *field, static int lg_probe(struct hid_device *hdev, const struct hid_device_id *id) { + struct usb_interface *iface = to_usb_interface(hdev->dev.parent); + __u8 iface_num = iface->cur_altsetting->desc.bInterfaceNumber; unsigned int connect_mask = HID_CONNECT_DEFAULT; struct lg_drv_data *drv_data; int ret; + /* Only work with the 1st interface (G29 presents multiple) */ + if (iface_num != 0) { + dbg_hid("%s: ignoring ifnum %d\n", __func__, iface_num); + return -ENODEV; + } + drv_data = kzalloc(sizeof(struct lg_drv_data), GFP_KERNEL); if (!drv_data) { hid_err(hdev, "Insufficient memory, cannot allocate driver data\n"); -- cgit v1.2.3