Input: wacom - add Intuos5 multitouch sensor support
Intuos5 tablets with PTH-* model numbers include a multitouch sensor
which use the same touch reports as the 3rd-generation Bamboo. No
useful information is in the HID descriptor for the touch interface
so hardcoded values are used during setup.
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Reviewed-by: Chris Bagwell <chris@cnpbagwell.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index d771338..1c874ad 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -233,6 +233,9 @@
* 3rd gen Bamboo Touch no longer define a Digitizer-Finger Pysical
* Collection. Instead they define a Logical Collection with a single
* Logical Maximum for both X and Y.
+ *
+ * Intuos5 touch interface does not contain useful data. We deal with
+ * this after returning from this function.
*/
static int wacom_parse_hid(struct usb_interface *intf,
struct hid_descriptor *hid_desc,
@@ -1085,6 +1088,28 @@
if (error)
goto fail3;
+ /*
+ * Intuos5 has no useful data about its touch interface in its
+ * HID descriptor. If this is the touch interface (wMaxPacketSize
+ * of WACOM_PKGLEN_BBTOUCH3), override the table values.
+ */
+ if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
+ if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
+ features->device_type = BTN_TOOL_FINGER;
+ features->pktlen = WACOM_PKGLEN_BBTOUCH3;
+
+ features->x_phy =
+ (features->x_max * 100) / features->x_resolution;
+ features->y_phy =
+ (features->y_max * 100) / features->y_resolution;
+
+ features->x_max = 4096;
+ features->y_max = 4096;
+ } else {
+ features->device_type = BTN_TOOL_PEN;
+ }
+ }
+
wacom_setup_device_quirks(features);
strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
