X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=drivers%2Fhid%2Fhid-lg.c;h=a7f916e8fc3256bc6fcbdc68210bc8e92e1630db;hp=21f205f092500e6902951c5fe2e261af6e6edf3b;hb=2c9e88a1085b3183e5f92170a74980e5654f817b;hpb=f7fdd84e04c8fdc9196abe3bfd27535bccb52ee5

diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index 21f205f09250..a7f916e8fc32 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -41,6 +41,66 @@
 #define LG_FF3			0x1000
 #define LG_FF4			0x2000
 
+/* Size of the original descriptor of the Driving Force Pro wheel */
+#define DFP_RDESC_ORIG_SIZE	97
+
+/* Fixed report descriptor for Logitech Driving Force Pro wheel controller
+ *
+ * The original descriptor hides the separate throttle and brake axes in
+ * a custom vendor usage page, providing only a combined value as
+ * GenericDesktop.Y.
+ * This descriptor removes the combined Y axis and instead reports
+ * separate throttle (Y) and brake (RZ).
+ */
+static __u8 dfp_rdesc_fixed[] = {
+0x05, 0x01,         /*  Usage Page (Desktop),                   */
+0x09, 0x04,         /*  Usage (Joystik),                        */
+0xA1, 0x01,         /*  Collection (Application),               */
+0xA1, 0x02,         /*      Collection (Logical),               */
+0x95, 0x01,         /*          Report Count (1),               */
+0x75, 0x0E,         /*          Report Size (14),               */
+0x14,               /*          Logical Minimum (0),            */
+0x26, 0xFF, 0x3F,   /*          Logical Maximum (16383),        */
+0x34,               /*          Physical Minimum (0),           */
+0x46, 0xFF, 0x3F,   /*          Physical Maximum (16383),       */
+0x09, 0x30,         /*          Usage (X),                      */
+0x81, 0x02,         /*          Input (Variable),               */
+0x95, 0x0E,         /*          Report Count (14),              */
+0x75, 0x01,         /*          Report Size (1),                */
+0x25, 0x01,         /*          Logical Maximum (1),            */
+0x45, 0x01,         /*          Physical Maximum (1),           */
+0x05, 0x09,         /*          Usage Page (Button),            */
+0x19, 0x01,         /*          Usage Minimum (01h),            */
+0x29, 0x0E,         /*          Usage Maximum (0Eh),            */
+0x81, 0x02,         /*          Input (Variable),               */
+0x05, 0x01,         /*          Usage Page (Desktop),           */
+0x95, 0x01,         /*          Report Count (1),               */
+0x75, 0x04,         /*          Report Size (4),                */
+0x25, 0x07,         /*          Logical Maximum (7),            */
+0x46, 0x3B, 0x01,   /*          Physical Maximum (315),         */
+0x65, 0x14,         /*          Unit (Degrees),                 */
+0x09, 0x39,         /*          Usage (Hat Switch),             */
+0x81, 0x42,         /*          Input (Variable, Nullstate),    */
+0x65, 0x00,         /*          Unit,                           */
+0x26, 0xFF, 0x00,   /*          Logical Maximum (255),          */
+0x46, 0xFF, 0x00,   /*          Physical Maximum (255),         */
+0x75, 0x08,         /*          Report Size (8),                */
+0x81, 0x01,         /*          Input (Constant),               */
+0x09, 0x31,         /*          Usage (Y),                      */
+0x81, 0x02,         /*          Input (Variable),               */
+0x09, 0x35,         /*          Usage (Rz),                     */
+0x81, 0x02,         /*          Input (Variable),               */
+0x81, 0x01,         /*          Input (Constant),               */
+0xC0,               /*      End Collection,                     */
+0xA1, 0x02,         /*      Collection (Logical),               */
+0x09, 0x02,         /*          Usage (02h),                    */
+0x95, 0x07,         /*          Report Count (7),               */
+0x91, 0x02,         /*          Output (Variable),              */
+0xC0,               /*      End Collection,                     */
+0xC0                /*  End Collection                          */
+};
+
+
 /*
  * Certain Logitech keyboards send in report #3 keys which are far
  * above the logical maximum described in descriptor. This extends
@@ -74,6 +134,18 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 		rdesc[47] = 0x95;
 		rdesc[48] = 0x0B;
 	}
+
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LOGITECH_DFP_WHEEL:
+		if (*rsize == DFP_RDESC_ORIG_SIZE) {
+			hid_info(hdev,
+				"fixing up Logitech Driving Force Pro report descriptor\n");
+			rdesc = dfp_rdesc_fixed;
+			*rsize = sizeof(dfp_rdesc_fixed);
+		}
+		break;
+	}
+
 	return rdesc;
 }
 
@@ -380,7 +452,7 @@ static const struct hid_device_id lg_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL),
 		.driver_data = LG_FF },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL),
-		.driver_data = LG_FF },
+		.driver_data = LG_NOGET | LG_FF },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL),
 		.driver_data = LG_FF4 },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ),