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Commit b456634b authored by Simon Wood's avatar Simon Wood Committed by Jiri Kosina
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HID: hid-logitech: Compute combined pedals value 



Add support for computing a combined accelerator/brake axis for wheels
which don't contain combined data in their HID stream.

This includes DFGT, G25, G27, G29 and Wii-Wheel.

Signed-off-by: default avatarSimon Wood <simon@mungewell.org>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent c832f86e

drivers/hid/hid-lg4ff.c

+17 −0
Original line number Diff line number Diff line
@@ -332,6 +332,7 @@ int lg4ff_adjust_input_event(struct hid_device *hid, struct hid_field *field, 
int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report,

		u8 *rd, int size, struct lg_drv_data *drv_data)

{

	int offset;

	struct lg4ff_device_entry *entry = drv_data->device_props;



	if (!entry)
@@ -353,9 +354,25 @@ int lg4ff_raw_event(struct hid_device *hdev, struct hid_report *report, 
			rd[5] = rd[4];

			rd[6] = 0x7F;

			return 1;

		case USB_DEVICE_ID_LOGITECH_G25_WHEEL:

		case USB_DEVICE_ID_LOGITECH_G27_WHEEL:

			offset = 5;

			break;

		case USB_DEVICE_ID_LOGITECH_DFGT_WHEEL:

		case USB_DEVICE_ID_LOGITECH_G29_WHEEL:

			offset = 6;

			break;

		case USB_DEVICE_ID_LOGITECH_WII_WHEEL:

			offset = 3;

			break;

		default:

			return 0;

		}



		/* Compute a combined axis when wheel does not supply it */

		rd[offset] = (0xFF + rd[offset] - rd[offset+1]) >> 1;

		rd[offset+1] = 0x7F;

		return 1;

	}



	return 0;