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HID: Add Tablet Pick -> BTN_STYLUS2 mapping

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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>
This commit is contained in:
Nikolai Kondrashov 2010-08-06 23:03:07 +04:00 committed by Jiri Kosina
parent 73e4008ddd
commit 50b6369767
1 changed files with 4 additions and 0 deletions
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4
drivers/hid/hid-input.c
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@ -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;