Commit 348cbaa8 authored by Simon Wood's avatar Simon Wood Committed by Jiri Kosina
Browse files

HID: lg: fix Report Descriptor for Logitech MOMO Force (Black) 



By default the Logitech MOMO Force (Black) presents a combined accel/brake
axis ('Y'). This patch modifies the HID descriptor to present seperate
accel/brake axes ('Y' and 'Z').

Signed-off-by: default avatarSimon Wood <simon@mungewell.org>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 7f505470

drivers/hid/hid-lg.c

+58 −0
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ 
#define DFP_RDESC_ORIG_SIZE	97

#define FV_RDESC_ORIG_SIZE	130

#define MOMO_RDESC_ORIG_SIZE	87

#define MOMO2_RDESC_ORIG_SIZE	87



/* Fixed report descriptors for Logitech Driving Force (and Pro)

 * wheel controllers
@@ -284,6 +285,54 @@ static __u8 momo_rdesc_fixed[] = { 
0xC0                /*  End Collection                      */

};



static __u8 momo2_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, 0x0A,         /*          Report Size (10),           */

0x15, 0x00,         /*          Logical Minimum (0),        */

0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */

0x35, 0x00,         /*          Physical Minimum (0),       */

0x46, 0xFF, 0x03,   /*          Physical Maximum (1023),    */

0x09, 0x30,         /*          Usage (X),                  */

0x81, 0x02,         /*          Input (Variable),           */

0x95, 0x0A,         /*          Report Count (10),          */

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, 0x0A,         /*          Usage Maximum (0Ah),        */

0x81, 0x02,         /*          Input (Variable),           */

0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */

0x09, 0x00,         /*          Usage (00h),                */

0x95, 0x04,         /*          Report Count (4),           */

0x81, 0x02,         /*          Input (Variable),           */

0x95, 0x01,         /*          Report Count (1),           */

0x75, 0x08,         /*          Report Size (8),            */

0x26, 0xFF, 0x00,   /*          Logical Maximum (255),      */

0x46, 0xFF, 0x00,   /*          Physical Maximum (255),     */

0x09, 0x01,         /*          Usage (01h),                */

0x81, 0x02,         /*          Input (Variable),           */

0x05, 0x01,         /*          Usage Page (Desktop),       */

0x09, 0x31,         /*          Usage (Y),                  */

0x81, 0x02,         /*          Input (Variable),           */

0x09, 0x32,         /*          Usage (Z),                  */

0x81, 0x02,         /*          Input (Variable),           */

0x06, 0x00, 0xFF,   /*          Usage Page (FF00h),         */

0x09, 0x00,         /*          Usage (00h),                */

0x81, 0x02,         /*          Input (Variable),           */

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
@@ -343,6 +392,15 @@ static __u8 *lg_report_fixup(struct hid_device *hdev, __u8 *rdesc, 
		}

		break;



	case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2:

		if (*rsize == MOMO2_RDESC_ORIG_SIZE) {

			hid_info(hdev,

				"fixing up Logitech Momo Racing Force (Black) report descriptor\n");

			rdesc = momo2_rdesc_fixed;

			*rsize = sizeof(momo2_rdesc_fixed);

		}

		break;



	case USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL:

		if (*rsize == FV_RDESC_ORIG_SIZE) {

			hid_info(hdev,

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