HID: uclogic: Add support for UC-Logic TWHA60

Add support for UC-Logic Tablet TWHA60.
It is known to be sold as Genius EasyPen M610 and Monoprice MP1060-HA60.

As this tablet has several variations with different number and different
assignments of frame buttons, they are simply mapped to F1-F24 range and are
left for users to remap in userspace.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

3 files changed, 100 insertions, 0 deletions

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 8bf8a64e5115..23a583145a72 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1660,6 +1660,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
         { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 1dcb76ff51e3..5d8ffc494d93 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -758,6 +758,7 @@
 #define USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U    0x0005
 #define USB_DEVICE_ID_UCLOGIC_TABLET_WP1062     0x0064
 #define USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850   0x0522
+#define USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60     0x0781
 
 #define USB_VENDOR_ID_UNITEC    0x227d
 #define USB_DEVICE_ID_UNITEC_USB_TOUCH_0709     0x0709
diff --git a/drivers/hid/hid-uclogic.c b/drivers/hid/hid-uclogic.c
index 3aba02be1f26..2e56a1fd2375 100644
--- a/drivers/hid/hid-uclogic.c
+++ b/drivers/hid/hid-uclogic.c
@@ -466,6 +466,86 @@ static __u8 twhl850_rdesc_fixed2[] = {
         0xC0                /*  End Collection                      */
 };
 
+/*
+ * See TWHA60 description, device and HID report descriptors at
+ * http://sf.net/apps/mediawiki/digimend/?title=UC-Logic_Tablet_TWHA60
+ */
+
+/* Size of the original descriptors of TWHA60 tablet */
+#define TWHA60_RDESC_ORIG_SIZE0 254
+#define TWHA60_RDESC_ORIG_SIZE1 139
+
+/* Fixed TWHA60 report descriptor, interface 0 (stylus) */
+static __u8 twha60_rdesc_fixed0[] = {
+        0x05, 0x0D,         /*  Usage Page (Digitizer),             */
+        0x09, 0x02,         /*  Usage (Pen),                        */
+        0xA1, 0x01,         /*  Collection (Application),           */
+        0x85, 0x09,         /*      Report ID (9),                  */
+        0x09, 0x20,         /*      Usage (Stylus),                 */
+        0xA0,               /*      Collection (Physical),          */
+        0x75, 0x01,         /*          Report Size (1),            */
+        0x09, 0x42,         /*          Usage (Tip Switch),         */
+        0x09, 0x44,         /*          Usage (Barrel Switch),      */
+        0x09, 0x46,         /*          Usage (Tablet Pick),        */
+        0x14,               /*          Logical Minimum (0),        */
+        0x25, 0x01,         /*          Logical Maximum (1),        */
+        0x95, 0x03,         /*          Report Count (3),           */
+        0x81, 0x02,         /*          Input (Variable),           */
+        0x95, 0x04,         /*          Report Count (4),           */
+        0x81, 0x01,         /*          Input (Constant),           */
+        0x09, 0x32,         /*          Usage (In Range),           */
+        0x95, 0x01,         /*          Report Count (1),           */
+        0x81, 0x02,         /*          Input (Variable),           */
+        0x75, 0x10,         /*          Report Size (16),           */
+        0x95, 0x01,         /*          Report Count (1),           */
+        0x14,               /*          Logical Minimum (0),        */
+        0xA4,               /*          Push,                       */
+        0x05, 0x01,         /*          Usage Page (Desktop),       */
+        0x55, 0xFD,         /*          Unit Exponent (-3),         */
+        0x65, 0x13,         /*          Unit (Inch),                */
+        0x34,               /*          Physical Minimum (0),       */
+        0x09, 0x30,         /*          Usage (X),                  */
+        0x46, 0x10, 0x27,   /*          Physical Maximum (10000),   */
+        0x27, 0x3F, 0x9C,
+                0x00, 0x00, /*          Logical Maximum (39999),    */
+        0x81, 0x02,         /*          Input (Variable),           */
+        0x09, 0x31,         /*          Usage (Y),                  */
+        0x46, 0x6A, 0x18,   /*          Physical Maximum (6250),    */
+        0x26, 0xA7, 0x61,   /*          Logical Maximum (24999),    */
+        0x81, 0x02,         /*          Input (Variable),           */
+        0xB4,               /*          Pop,                        */
+        0x09, 0x30,         /*          Usage (Tip Pressure),       */
+        0x26, 0xFF, 0x03,   /*          Logical Maximum (1023),     */
+        0x81, 0x02,         /*          Input (Variable),           */
+        0xC0,               /*      End Collection,                 */
+        0xC0                /*  End Collection                      */
+};
+
+/* Fixed TWHA60 report descriptor, interface 1 (frame buttons) */
+static __u8 twha60_rdesc_fixed1[] = {
+        0x05, 0x01, /*  Usage Page (Desktop),       */
+        0x09, 0x06, /*  Usage (Keyboard),           */
+        0xA1, 0x01, /*  Collection (Application),   */
+        0x85, 0x05, /*      Report ID (5),          */
+        0x05, 0x07, /*      Usage Page (Keyboard),  */
+        0x14,       /*      Logical Minimum (0),    */
+        0x25, 0x01, /*      Logical Maximum (1),    */
+        0x75, 0x01, /*      Report Size (1),        */
+        0x95, 0x08, /*      Report Count (8),       */
+        0x81, 0x01, /*      Input (Constant),       */
+        0x95, 0x0C, /*      Report Count (12),      */
+        0x19, 0x3A, /*      Usage Minimum (KB F1),  */
+        0x29, 0x45, /*      Usage Maximum (KB F12), */
+        0x81, 0x02, /*      Input (Variable),       */
+        0x95, 0x0C, /*      Report Count (12),      */
+        0x19, 0x68, /*      Usage Minimum (KB F13), */
+        0x29, 0x73, /*      Usage Maximum (KB F24), */
+        0x81, 0x02, /*      Input (Variable),       */
+        0x95, 0x08, /*      Report Count (8),       */
+        0x81, 0x01, /*      Input (Constant),       */
+        0xC0        /*  End Collection              */
+};
+
 static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
                                         unsigned int *rsize)
 {
@@ -525,6 +605,22 @@ static __u8 *uclogic_report_fixup(struct hid_device *hdev, __u8 *rdesc,
                         break;
                 }
                 break;
+        case USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60:
+                switch (iface_num) {
+                case 0:
+                        if (*rsize == TWHA60_RDESC_ORIG_SIZE0) {
+                                rdesc = twha60_rdesc_fixed0;
+                                *rsize = sizeof(twha60_rdesc_fixed0);
+                        }
+                        break;
+                case 1:
+                        if (*rsize == TWHA60_RDESC_ORIG_SIZE1) {
+                                rdesc = twha60_rdesc_fixed1;
+                                *rsize = sizeof(twha60_rdesc_fixed1);
+                        }
+                        break;
+                }
+                break;
         }
 
         return rdesc;
@@ -543,6 +639,8 @@ static const struct hid_device_id uclogic_devices[] = {
                                 USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
         { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
                                 USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
+        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC,
+                                USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
         { }
 };
 MODULE_DEVICE_TABLE(hid, uclogic_devices);