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Wed, 3 Nov 2021 07:38:00 -0400 (EDT) From: Alistair Francis 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 Subject: [PATCH v14 1/3] HID: quirks: Allow inverting the absolute X/Y values Date: Wed, 3 Nov 2021 21:37:46 +1000 Message-Id: <20211103113748.61046-1-alistair@alistair23.me> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211103_043812_749057_7C0133A3 X-CRM114-Status: GOOD ( 10.27 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- 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 4b5ebeacd283..173fcd3d92df 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -1328,6 +1328,12 @@ 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 9e067f937dbc..4959385ca588 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)