linux-kernel - [PATCH] HID: wacom: Add reporting of wheel for Intuos4 WL

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1331317000-9036-1-git-send-email-przemo@firszt.eu>
Date:	Fri,  9 Mar 2012 18:16:40 +0000
From:	Przemo Firszt <przemo@...szt.eu>
To:	jkosina@...e.cz, pinglinux@...il.com, killertofu@...il.com
Cc:	linuxwacom-devel@...ts.sourceforge.net,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	Przemo Firszt <przemo@...szt.eu>
Subject: [PATCH] HID: wacom: Add reporting of wheel for Intuos4 WL

This patch adds reporting of ABS_WHEEL event. Raported walues are 0..71
and are related to absolute location of the finger on the wheel.

Signed-off-by: Przemo Firszt <przemo@...szt.eu>
---
 drivers/hid/hid-wacom.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index 5c25036..925d4a7 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -36,6 +36,7 @@
 struct wacom_data {
 	__u16 tool;
 	__u16 butstate;
+	__u8 whlstate;
 	__u8 features;
 	__u32 id;
 	__u32 serial;
@@ -322,6 +323,23 @@ static void wacom_i4_parse_button_report(struct wacom_data *wdata,
 			struct input_dev *input, unsigned char *data)
 {
 	__u16 new_butstate;
+	__u8 new_whlstate;
+	__u8 sync = 0;
+
+	new_whlstate = data[1];
+	if (new_whlstate != wdata->whlstate) {
+		wdata->whlstate = new_whlstate;
+		if (new_whlstate & 0x10) {
+			input_report_key(input, BTN_TOUCH, 1);
+			input_report_abs(input, ABS_WHEEL, (new_whlstate & 0x7f));
+			input_report_key(input, BTN_TOOL_FINGER, 1);
+		} else {
+			input_report_key(input, BTN_TOUCH, 0);
+			input_report_abs(input, ABS_WHEEL, 0);
+			input_report_key(input, BTN_TOOL_FINGER, 0);
+		}
+		sync = 1;
+	}
 
 	new_butstate = (data[3] << 1) | (data[2] & 0x01);
 	if (new_butstate != wdata->butstate) {
@@ -336,6 +354,10 @@ static void wacom_i4_parse_button_report(struct wacom_data *wdata,
 		input_report_key(input, BTN_7, new_butstate & 0x080);
 		input_report_key(input, BTN_8, new_butstate & 0x100);
 		input_report_key(input, BTN_TOOL_FINGER, 1);
+		sync = 1;
+	}
+
+	if (sync) {
 		input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
 		input_event(input, EV_MSC, MSC_SERIAL, 0xffffffff);
 		input_sync(input);
@@ -512,6 +534,9 @@ static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 		input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
 		break;
 	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
+		__set_bit(ABS_WHEEL, input->absbit);
+		input_set_abs_params(input, ABS_WHEEL, 0, 71, 0, 0);
+		input_set_capability(input, EV_MSC, MSC_SERIAL);
 		__set_bit(ABS_MISC, input->absbit);
 		__set_bit(BTN_2, input->keybit);
 		__set_bit(BTN_3, input->keybit);
-- 
1.7.6.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/