linux-kernel - [PATCH 46/53] Input: atmel_mxt_ts - Handle reports from T47 Stylus object

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

Message-Id: <1370453866-16534-47-git-send-email-nick.dyer@itdev.co.uk>
Date:	Wed,  5 Jun 2013 18:37:39 +0100
From:	Nick Dyer <nick.dyer@...ev.co.uk>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Henrik Rydberg <rydberg@...omail.se>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Alan.Bowens@...el.com, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, pmeerw@...erw.net,
	bleung@...omium.org, olofj@...omium.org
Cc:	Nick Dyer <nick.dyer@...ev.co.uk>
Subject: [PATCH 46/53] Input: atmel_mxt_ts - Handle reports from T47 Stylus object

Signed-off-by: Nick Dyer <nick.dyer@...ev.co.uk>
Acked-by: Benson Leung <bleung@...omium.org>
---
 drivers/input/touchscreen/atmel_mxt_ts.c |   16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 6631ef1..cd8f3e0 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -128,6 +128,9 @@ struct t9_range {
 /* Define for MXT_PROCI_TOUCHSUPPRESSION_T42 */
 #define MXT_T42_MSG_TCHSUP	(1 << 0)
 
+/* T47 Stylus */
+#define MXT_TOUCH_MAJOR_T47_STYLUS	1
+
 /* T63 Stylus */
 #define MXT_STYLUS_PRESS	(1 << 0)
 #define MXT_STYLUS_RELEASE	(1 << 1)
@@ -698,6 +701,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 	int area;
 	int amplitude;
 	u8 vector;
+	int tool;
 
 	/* do not report events if input device not yet registered */
 	if (!data->enable_reporting)
@@ -715,6 +719,7 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 		y >>= 2;
 
 	area = message[5];
+
 	amplitude = message[6];
 	vector = message[7];
 
@@ -743,8 +748,17 @@ static void mxt_proc_t9_message(struct mxt_data *data, u8 *message)
 			mxt_input_sync(input_dev);
 		}
 
+		/* A reported size of zero indicates that the reported touch
+		 * is a stylus from a linked Stylus T47 object. */
+		if (area == 0) {
+			area = MXT_TOUCH_MAJOR_T47_STYLUS;
+			tool = MT_TOOL_PEN;
+		} else {
+			tool = MT_TOOL_FINGER;
+		}
+
 		/* Touch active */
-		input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, 1);
+		input_mt_report_slot_state(input_dev, tool, 1);
 		input_report_abs(input_dev, ABS_MT_POSITION_X, x);
 		input_report_abs(input_dev, ABS_MT_POSITION_Y, y);
 		input_report_abs(input_dev, ABS_MT_PRESSURE, amplitude);
-- 
1.7.10.4

--
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/