linux-kernel - [PATCH 4/4] input: mt: Add pressure to pointer emulation code

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Message-Id: <1291014802-17061-5-git-send-email-rydberg@euromail.se>
Date:	Mon, 29 Nov 2010 08:13:22 +0100
From:	"Henrik Rydberg" <rydberg@...omail.se>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org, Henrik Rydberg <rydberg@...omail.se>
Subject: [PATCH 4/4] input: mt: Add pressure to pointer emulation code

Some MT devices report pressure per contact. This patch adds
ABS_PRESSURE to the pointer emulation code.

Signed-off-by: Henrik Rydberg <rydberg@...omail.se>
---
 drivers/input/input-mt.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 08aa682..49ccd15 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -97,7 +97,8 @@ EXPORT_SYMBOL(input_mt_report_slot_state);
  * input_mt_report_pointer_emulation() - common pointer emulation
  * @dev: input device with allocated MT slots
  *
- * Performs legacy pointer emulation via BTN_TOUCH, ABS_X and ABS_Y.
+ * Performs legacy pointer emulation via BTN_TOUCH, ABS_X, ABS_Y and
+ * ABS_PRESSURE.
  */
 void input_mt_report_pointer_emulation(struct input_dev *dev)
 {
@@ -124,9 +125,13 @@ void input_mt_report_pointer_emulation(struct input_dev *dev)
 	if (oldest) {
 		int x = input_mt_get_value(oldest, ABS_MT_POSITION_X);
 		int y = input_mt_get_value(oldest, ABS_MT_POSITION_Y);
+		int p = input_mt_get_value(oldest, ABS_MT_PRESSURE);
 
 		input_event(dev, EV_ABS, ABS_X, x);
 		input_event(dev, EV_ABS, ABS_Y, y);
+		input_event(dev, EV_ABS, ABS_PRESSURE, p);
+	} else {
+		input_event(dev, EV_ABS, ABS_PRESSURE, 0);
 	}
 }
 EXPORT_SYMBOL(input_mt_report_pointer_emulation);
-- 
1.7.1

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