Commit 50b63697 authored Aug 06, 2010 by Nikolai Kondrashov Committed by Jiri Kosina Aug 09, 2010

HID: Add Tablet Pick -> BTN_STYLUS2 mapping

Many tablet input drivers use BTN_STYLUS2 code to report a second
tablet stylus button. Yet, the generic HID input driver doesn't map it.
Apparently, because there is no corresponding usage in the HID Usage Tables.

This patch selects a compromise usage - "Tablet Pick" (0x46) to be mapped to
BTN_STYLUS2. Some tablets use "Eraser" usage, but mapping it to a button
wouldn't be entirely correct, because the specification says it may be "a
pressure quantity".

Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

parent 73e4008d

drivers/hid/hid-input.c

+4 −0

Original line number	Original line	Diff line number	Diff line
	@@ -336,6 +336,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
	map_key_clear(BTN_STYLUS);		map_key_clear(BTN_STYLUS);
	break;		break;

			case 0x46: /* TabletPick */
			map_key_clear(BTN_STYLUS2);
			break;

	default: goto unknown;		default: goto unknown;
	}		}
	break;		break;

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