linux-kernel - [PATCH 3.14 133/228] Input: Add INPUT_PROP

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Date:	Wed,  4 Jun 2014 16:22:42 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Subject: [PATCH 3.14 133/228] Input: Add INPUT_PROP_TOPBUTTONPAD device property

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hans de Goede <hdegoede@...hat.com>

commit f37c013409bb78ebb958821aa10d069e707cabac upstream.

On some newer laptops with a trackpoint the physical buttons for the
trackpoint have been removed to allow for a larger touchpad. On these
laptops the buttonpad has clearly marked areas on the top which are to be
used as trackpad buttons.

Users of the event device-node need to know about this, so that they can
properly interpret BTN_LEFT events as being a left / right / middle click
depending on where on the button pad the clicking finger is.

This commits adds a INPUT_PROP_TOPBUTTONPAD device property which drivers
for such buttonpads will use to signal to the user that this buttonpad not
only has the normal bottom button area, but also a top button area.

Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 include/uapi/linux/input.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -164,6 +164,7 @@ struct input_keymap_entry {
 #define INPUT_PROP_DIRECT		0x01	/* direct input devices */
 #define INPUT_PROP_BUTTONPAD		0x02	/* has button(s) under pad */
 #define INPUT_PROP_SEMI_MT		0x03	/* touch rectangle only */
+#define INPUT_PROP_TOPBUTTONPAD		0x04	/* softbuttons at top of pad */

 #define INPUT_PROP_MAX			0x1f
 #define INPUT_PROP_CNT			(INPUT_PROP_MAX + 1)

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