HID: fix Logitech WingMan Formula GP joined axes

The Logitech WingMan Formula GP by default presents a combined
accelerate/brake axis, so this patch assigns it to hid-logitech in order to
benefit from the axis-splitting logic in lg4ff. There is also a fixed
report descriptor for the resulting report.

Signed-off-by: Jarrad Whitaker <jarrad.whitaker@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

4 files changed, 68 insertions, 0 deletions

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 24f846d67478..c43fe0a0fc36 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -744,6 +744,7 @@
 #define USB_DEVICE_ID_LOGITECH_WINGMAN_F3D	0xc283
 #define USB_DEVICE_ID_LOGITECH_FORCE3D_PRO	0xc286
 #define USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940	0xc287
+#define USB_DEVICE_ID_LOGITECH_WINGMAN_FG	0xc20e
 #define USB_DEVICE_ID_LOGITECH_WINGMAN_FFG	0xc293
 #define USB_DEVICE_ID_LOGITECH_WHEEL	0xc294
 #define USB_DEVICE_ID_LOGITECH_MOMO_WHEEL	0xc295
diff --git a/drivers/hid/hid-lg.c b/drivers/hid/hid-lg.c
index 596227ddb6e0..5d419a95b6c2 100644
--- a/drivers/hid/hid-lg.c
+++ b/drivers/hid/hid-lg.c
@@ -50,6 +50,7 @@
 #define MOMO_RDESC_ORIG_SIZE	87
 #define MOMO2_RDESC_ORIG_SIZE	87
 #define FFG_RDESC_ORIG_SIZE	85
+#define FG_RDESC_ORIG_SIZE	82
 
 /* Fixed report descriptors for Logitech Driving Force (and Pro)
  * wheel controllers
@@ -381,6 +382,49 @@ static __u8 ffg_rdesc_fixed[] = {
 0xC0                /*  End Collection                      */
 };
 
+static __u8 fg_rdesc_fixed[] = {
+0x05, 0x01,         /*  Usage Page (Desktop),               */
+0x09, 0x04,         /*  Usage (Joystik),                    */
+0xA1, 0x01,         /*  Collection (Application),           */
+0xA1, 0x02,         /*      Collection (Logical),           */
+0x15, 0x00,         /*          Logical Minimum (0),        */
+0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
+0x35, 0x00,         /*          Physical Minimum (0),       */
+0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
+0x75, 0x08,         /*          Report Size (8),            */
+0x95, 0x01,         /*          Report Count (1),           */
+0x09, 0x30,         /*          Usage (X),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0xA4,               /*  Push,                               */
+0x25, 0x01,         /*          Logical Maximum (1),        */
+0x45, 0x01,         /*          Physical Maximum (1),       */
+0x75, 0x01,         /*          Report Size (1),            */
+0x95, 0x02,         /*          Report Count (2),           */
+0x81, 0x01,         /*          Input (Constant),           */
+0x95, 0x06,         /*          Report Count (6),           */
+0x05, 0x09,         /*          Usage Page (Button),        */
+0x19, 0x01,         /*          Usage Minimum (01h),        */
+0x29, 0x06,         /*          Usage Maximum (06h),        */
+0x81, 0x02,         /*          Input (Variable),           */
+0x05, 0x01,         /*          Usage Page (Desktop),       */
+0xB4,               /*  Pop,                                */
+0x81, 0x02,         /*          Input (Constant),           */
+0x09, 0x31,         /*          Usage (Y),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0x09, 0x32,         /*          Usage (Z),                  */
+0x81, 0x02,         /*          Input (Variable),           */
+0xC0,               /*      End Collection,                 */
+0xA1, 0x02,         /*      Collection (Logical),           */
+0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */
+0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */
+0x75, 0x08,         /*          Report Size (8),            */
+0x95, 0x04,         /*          Report Count (4),           */
+0x09, 0x02,         /*          Usage (02h),                */
+0xB1, 0x02,         /*          Feature (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
@@ -408,6 +452,19 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc,
 
 	switch (hdev->product) {
 
+	case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
+		if (*rsize == FG_RDESC_ORIG_SIZE) {
+			hid_info(hdev,
+				"fixing up Logitech Wingman Formula GP report descriptor\n");
+			rdesc = fg_rdesc_fixed;
+			*rsize = sizeof(fg_rdesc_fixed);
+		} else {
+			hid_info(hdev,
+				"rdesc size test failed for formula gp\n");
+		}
+		break;
+
+
 	case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		if (*rsize == FFG_RDESC_ORIG_SIZE) {
 			hid_info(hdev,
@@ -664,6 +721,7 @@ static int lg_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 			usage->code == ABS_RZ)) {
 		switch (hdev->product) {
 		case USB_DEVICE_ID_LOGITECH_G29_WHEEL:
+		case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
 		case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		case USB_DEVICE_ID_LOGITECH_WHEEL:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL:
@@ -871,6 +929,8 @@ static const struct hid_device_id lg_devices[] = {
 		.driver_data = LG_NOGET | LG_FF4 },
 	{ 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_FG),
+		.driver_data = LG_NOGET },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG),
 		.driver_data = LG_NOGET | LG_FF4 },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2),
diff --git a/drivers/hid/hid-lg4ff.c b/drivers/hid/hid-lg4ff.c
index 512d67e1aae3..a299c9d1605f 100644
--- a/drivers/hid/hid-lg4ff.c
+++ b/drivers/hid/hid-lg4ff.c
@@ -103,6 +103,10 @@ static const signed short lg4ff_wheel_effects[] = {
 	-1
 };
 
+static const signed short no_wheel_effects[] = {
+	-1
+};
+
 struct lg4ff_wheel {
 	const u32 product_id;
 	const signed short *ff_effects;
@@ -137,6 +141,7 @@ struct lg4ff_alternate_mode {
 };
 
 static const struct lg4ff_wheel lg4ff_devices[] = {
+	{USB_DEVICE_ID_LOGITECH_WINGMAN_FG,  no_wheel_effects,    40, 180, NULL},
 	{USB_DEVICE_ID_LOGITECH_WINGMAN_FFG, lg4ff_wheel_effects, 40, 180, NULL},
 	{USB_DEVICE_ID_LOGITECH_WHEEL,       lg4ff_wheel_effects, 40, 270, NULL},
 	{USB_DEVICE_ID_LOGITECH_MOMO_WHEEL,  lg4ff_wheel_effects, 40, 270, NULL},
@@ -346,6 +351,7 @@ int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report,
 			rd[5] = rd[3];
 			rd[6] = 0x7F;
 			return 1;
+		case USB_DEVICE_ID_LOGITECH_WINGMAN_FG:
 		case USB_DEVICE_ID_LOGITECH_WINGMAN_FFG:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL:
 		case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2:
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 94088c0ed68a..4c063d8b2e13 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -451,6 +451,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G29_WHEEL) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FG) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },