HID: hid-multitouch: Add Flatfrog support

Add support for the Flatfrog Multitouch 3200 panel. This panel
advertises some fields that it does not use, hence the new quirk.

Cc: Pablo Cases <pablo.cases@flatfrog.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

2 files changed, 24 insertions, 5 deletions

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 1dcb76ff51e3..c843db9e283f 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -283,6 +283,9 @@
 #define USB_VENDOR_ID_EMS               0x2006
 #define USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II 0x0118
 
+#define USB_VENDOR_ID_FLATFROG          0x25b5
+#define USB_DEVICE_ID_MULTITOUCH_3200   0x0002
+
 #define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
 #define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
 
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 63f120b7877a..ee0b76b398cb 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -51,6 +51,7 @@ MODULE_LICENSE("GPL");
 #define MT_QUIRK_VALID_IS_INRANGE       (1 << 5)
 #define MT_QUIRK_VALID_IS_CONFIDENCE    (1 << 6)
 #define MT_QUIRK_SLOT_IS_CONTACTID_MINUS_ONE    (1 << 8)
+#define MT_QUIRK_NO_AREA                (1 << 9)
 
 struct mt_slot {
         __s32 x, y, p, w, h;
@@ -115,6 +116,7 @@ struct mt_device {
 #define MT_CLS_EGALAX_SERIAL                    0x0104
 #define MT_CLS_TOPSEED                          0x0105
 #define MT_CLS_PANASONIC                        0x0106
+#define MT_CLS_FLATFROG                         0x0107
 
 #define MT_DEFAULT_MAXCONTACT   10
 
@@ -199,6 +201,12 @@ static struct mt_class mt_classes[] = {
                 .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP,
                 .maxcontacts = 4 },
 
+        { .name = MT_CLS_FLATFROG,
+                .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+                        MT_QUIRK_NO_AREA,
+                .sn_move = 2048,
+                .maxcontacts = 40,
+        },
         { }
 };
 
@@ -366,18 +374,21 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
                 case HID_DG_WIDTH:
                         hid_map_usage(hi, usage, bit, max,
                                         EV_ABS, ABS_MT_TOUCH_MAJOR);
-                        set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
-                                cls->sn_width);
+                        if (!(cls->quirks & MT_QUIRK_NO_AREA))
+                                set_abs(hi->input, ABS_MT_TOUCH_MAJOR, field,
+                                        cls->sn_width);
                         mt_store_field(usage, td, hi);
                         td->last_field_index = field->index;
                         return 1;
                 case HID_DG_HEIGHT:
                         hid_map_usage(hi, usage, bit, max,
                                         EV_ABS, ABS_MT_TOUCH_MINOR);
-                        set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
-                                cls->sn_height);
-                        input_set_abs_params(hi->input,
+                        if (!(cls->quirks & MT_QUIRK_NO_AREA)) {
+                                set_abs(hi->input, ABS_MT_TOUCH_MINOR, field,
+                                        cls->sn_height);
+                                input_set_abs_params(hi->input,
                                         ABS_MT_ORIENTATION, 0, 1, 0, 0);
+                        }
                         mt_store_field(usage, td, hi);
                         td->last_field_index = field->index;
                         return 1;
@@ -860,6 +871,11 @@ static const struct hid_device_id mt_devices[] = {
                 MT_USB_DEVICE(USB_VENDOR_ID_ELO,
                         USB_DEVICE_ID_ELO_TS2515) },
 
+        /* Flatfrog Panels */
+        { .driver_data = MT_CLS_FLATFROG,
+                MT_USB_DEVICE(USB_VENDOR_ID_FLATFROG,
+                        USB_DEVICE_ID_MULTITOUCH_3200) },
+
         /* GeneralTouch panel */
         { .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
                 MT_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,