From fd8d135b2c5e88662f2729e034913f183455a667 Mon Sep 17 00:00:00 2001 From: Alistair Francis Date: Wed, 8 Dec 2021 22:40:43 +1000 Subject: HID: quirks: Allow inverting the absolute X/Y values Add a HID_QUIRK_X_INVERT/HID_QUIRK_Y_INVERT quirk that can be used to invert the X/Y values. Signed-off-by: Alistair Francis [bentiss: silence checkpatch warning] Signed-off-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20211208124045.61815-2-alistair@alistair23.me --- drivers/hid/hid-input.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/hid') diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 4186143da7c6..5f357dddcc01 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1329,6 +1329,12 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct input = field->hidinput->input; + if (usage->type == EV_ABS && + (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) || + ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))) { + value = field->logical_maximum - value; + } + if (usage->hat_min < usage->hat_max || usage->hat_dir) { int hat_dir = usage->hat_dir; if (!hat_dir) -- cgit v1.2.3-59-g8ed1b