diff options
| author | Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com> | 2025-02-01 12:38:52 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2025-02-03 15:16:56 +0100 |
| commit | 3051bf5ec773b803c474ea556b57d678a8885be3 (patch) | |
| tree | 320c09df1a0bcd7977b6707c02deac589dba108f /drivers/hid | |
| parent | 36de0164bbaff1484288e84ac5df5cff00580263 (diff) | |
| download | ath-3051bf5ec773b803c474ea556b57d678a8885be3.tar.gz | |
HID: pidff: Add FIX_WHEEL_DIRECTION quirk
Most steering wheels simply ignore DIRECTION field, but some try to be
compliant with the PID standard and use it in force calculations. Games
often ignore setting this field properly and/or there can be issues with
dinput8 -> wine -> SDL -> Linux API translation, and this value can be
incorrect. This can lead to partial/complete loss of Force Feedback or
even unexpected force reversal.
Sadly, this quirk can't be detected automatically without sending out
effects that would move an axis.
This fixes FFB on Moza Racing devices and others where effect direction
is not simply ignored.
Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Reviewed-by: Michał Kopeć <michal@nozomi.space>
Reviewed-by: Paul Dino Jones <paul@spacefreak18.xyz>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/usbhid/hid-pidff.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/hid/usbhid/hid-pidff.c b/drivers/hid/usbhid/hid-pidff.c index 298a971c63fdc..9e03dfb2b1e7e 100644 --- a/drivers/hid/usbhid/hid-pidff.c +++ b/drivers/hid/usbhid/hid-pidff.c @@ -136,6 +136,9 @@ static const u8 pidff_block_load_status[] = { 0x8c, 0x8d }; #define PID_EFFECT_STOP 1 static const u8 pidff_effect_operation_status[] = { 0x79, 0x7b }; +/* Polar direction 90 degrees (North) */ +#define PIDFF_FIXED_WHEEL_DIRECTION 0x4000 + struct pidff_usage { struct hid_field *field; s32 *value; @@ -337,9 +340,12 @@ static void pidff_set_effect_report(struct pidff_device *pidff, pidff->set_effect[PID_GAIN].value[0] = pidff->set_effect[PID_GAIN].field->logical_maximum; pidff->set_effect[PID_DIRECTION_ENABLE].value[0] = 1; - pidff->effect_direction->value[0] = - pidff_rescale(effect->direction, 0xffff, - pidff->effect_direction); + + /* Use fixed direction if needed */ + pidff->effect_direction->value[0] = pidff_rescale( + pidff->quirks & HID_PIDFF_QUIRK_FIX_WHEEL_DIRECTION ? + PIDFF_FIXED_WHEEL_DIRECTION : effect->direction, + 0xffff, pidff->effect_direction); /* Omit setting delay field if it's missing */ if (!(pidff->quirks & HID_PIDFF_QUIRK_MISSING_DELAY)) |