github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 14:04:54 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

HID: multitouch: force retrieving of Win8 signature blob

Browse Source 
commit 45c5c68282 upstream.

The Synaptics 0x11e5 over I2C found in the Asus T100-CHI requires to
fetch the signature blob to actually start sending events.

With this patch, we should be close enough to the Windows driver which
checks the content of the blob at plugin to validate or not the
touchscreen.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=113481
Fixes: 6d4f5440 ("HID: multitouch: Fetch feature reports on demand for Win8 devices")
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Tissoires 2016-03-07 11:02:38 +01:00 committed by Greg Kroah-Hartman
parent 773332f0e2
commit cca8665650
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/hid/hid-multitouch.c
View File

@ -396,6 +396,11 @@ static void mt_feature_mapping(struct hid_device *hdev,
td->is_buttonpad = true;
break;
case 0xff0000c5:
/* Retrieve the Win8 blob once to enable some devices */
if (usage->usage_index == 0)
mt_get_feature(hdev, field->report);
break;
}
}