From: Alistair Francis <alistair@alistair23.me>
To: dmitry.torokhov@gmail.com, shawnguo@kernel.org,
s.hauer@pengutronix.de, benjamin.tissoires@redhat.com
Cc: linux-imx@nxp.com, jikos@kernel.org, linux-input@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, alistair23@gmail.com,
Alistair Francis <alistair@alistair23.me>
Subject: [PATCH v12 1/3] HID: quirks: Allow inverting the absolute X/Y values
Date: Thu, 21 Oct 2021 19:51:05 +1000 [thread overview]
Message-ID: <20211021095107.116292-1-alistair@alistair23.me> (raw)
Add a HID_QUIRK_XY_INVERT quirk that can be used to invert the X/Y
values.
Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
drivers/hid/hid-input.c | 7 +++++++
include/linux/hid.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 4b5ebeacd283..0a9634473940 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1328,6 +1328,13 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
input = field->hidinput->input;
+ if (*quirks & HID_QUIRK_XY_INVERT) {
+ if (usage->type == EV_ABS &&
+ (usage->code == ABS_X || 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 9e067f937dbc..a6e91ee5b3de 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -349,6 +349,7 @@ 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_XY_INVERT BIT(12)
#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)
--
2.31.1
next reply other threads:[~2021-10-21 9:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 9:51 Alistair Francis [this message]
2021-10-21 9:51 ` [PATCH v12 2/3] HID: quirks: Invert X/Y values for rM2 Wacom Alistair Francis
2021-10-21 10:05 ` Benjamin Tissoires
2021-10-21 9:51 ` [PATCH v12 3/3] ARM: dts: imx7d: remarkable2: add wacom digitizer device Alistair Francis
2021-10-21 9:58 ` [PATCH v12 1/3] HID: quirks: Allow inverting the absolute X/Y values Benjamin Tissoires
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