[PATCH AUTOSEL 5.15 112/188] HID: quirks: Allow inverting the absolute X/Y values
From: Sasha Levin <sashal@kernel.org>
Date: 2022-01-18 03:12:36
Also in:
lkml, stable
Subsystem:
hid core layer, the rest · Maintainers:
Jiri Kosina, Benjamin Tissoires, Linus Torvalds
From: Alistair Francis <redacted> [ Upstream commit fd8d135b2c5e88662f2729e034913f183455a667 ] 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 <redacted> [bentiss: silence checkpatch warning] Signed-off-by: Benjamin Tissoires <redacted> Link: https://lore.kernel.org/r/20211208124045.61815-2-alistair@alistair23.me (local) Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hid/hid-input.c | 6 ++++++ include/linux/hid.h | 2 ++ 2 files changed, 8 insertions(+)
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 55017db98d896..69a0a290327a7 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c@@ -1330,6 +1330,12 @@ 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)
diff --git a/include/linux/hid.h b/include/linux/hid.h
index f453be385bd47..26742ca14609a 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h@@ -349,6 +349,8 @@ struct hid_item { /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */ #define HID_QUIRK_ALWAYS_POLL BIT(10) #define HID_QUIRK_INPUT_PER_APP BIT(11) +#define HID_QUIRK_X_INVERT BIT(12) +#define HID_QUIRK_Y_INVERT BIT(13) #define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16) #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17) #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18)
--
2.34.1