A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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HID: hid-logitech: Compute combined pedals value

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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: Simon Wood <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
This commit is contained in:
Simon Wood 2016-09-18 10:55:39 -06:00 • committed by Jiri Kosina
commit b456634b8d
1 changed files with 17 additions and 0 deletions
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17
drivers/hid/hid-lg4ff.c
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@ -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;