HID: multitouch: remove dead zones of Razer Blade Stealth

The Razer Blade Stealth detects palms too aggressively and this creates
a dead zone around the touchpad. Users like being able to use their
entire touchpad, so we should probably not filter out the "palm" events
from the device and report them as regular touches, leaving the palm
detection up to the upper stack

Link: https://bugs.freedesktop.org/show_bug.cgi?id=105409
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 504a95e0388fb7e7973c063bae3afeec24ec58da..bc724e6b75c9152f8bb5a269c942ff618dbe73dd 100644 (file)
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -184,6 +184,7 @@ static void mt_post_parse(struct mt_device *td);
 #define MT_CLS_ASUS                            0x010b
 #define MT_CLS_VTL                             0x0110
 #define MT_CLS_GOOGLE                          0x0111
+#define MT_CLS_RAZER_BLADE_STEALTH             0x0112
 
 #define MT_DEFAULT_MAXCONTACT  10
 #define MT_MAX_MAXCONTACT      250
@@ -326,6 +327,13 @@ static struct mt_class mt_classes[] = {
                        MT_QUIRK_SLOT_IS_CONTACTID |
                        MT_QUIRK_HOVERING
        },
+       { .name = MT_CLS_RAZER_BLADE_STEALTH,
+               .quirks = MT_QUIRK_ALWAYS_VALID |
+                       MT_QUIRK_IGNORE_DUPLICATES |
+                       MT_QUIRK_HOVERING |
+                       MT_QUIRK_CONTACT_CNT_ACCURATE |
+                       MT_QUIRK_WIN8_PTP_BUTTONS,
+       },
        { }
 };
 
@@ -1791,6 +1799,11 @@ static const struct hid_device_id mt_devices[] = {
                MT_USB_DEVICE(USB_VENDOR_ID_QUANTA,
                        USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001) },
 
+       /* Razer touchpads */
+       { .driver_data = MT_CLS_RAZER_BLADE_STEALTH,
+               HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+                       USB_VENDOR_ID_SYNAPTICS, 0x8323) },
+
        /* Stantum panels */
        { .driver_data = MT_CLS_CONFIDENCE,
                MT_USB_DEVICE(USB_VENDOR_ID_STANTUM_STM,