HID: wacom: generic: add vendor defined touch

Add vendor defined touch to support the second generation Intuos Pro.
Previously all generic Wacom devices used true HID to report their touch.

Signed-off-by: Aaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

4 files changed, 43 insertions, 9 deletions

diff --git a/drivers/hid/wacom.h b/drivers/hid/wacom.h
index 8d8fe309c872..0e7b840bb80b 100644
--- a/drivers/hid/wacom.h
+++ b/drivers/hid/wacom.h
@@ -219,4 +219,5 @@ enum led_brightness wacom_leds_brightness_get(struct wacom_led *led);
 struct wacom_led *wacom_led_find(struct wacom *wacom, unsigned int group,
                                  unsigned int id);
 struct wacom_led *wacom_led_next(struct wacom *wacom, struct wacom_led *cur);
+int wacom_equivalent_usage(int usage);
 #endif
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 4a70783e64e1..a4884e78b3f8 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -112,11 +112,12 @@ static void wacom_feature_mapping(struct hid_device *hdev,
         struct wacom *wacom = hid_get_drvdata(hdev);
         struct wacom_features *features = &wacom->wacom_wac.features;
         struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
+        unsigned int equivalent_usage = wacom_equivalent_usage(usage->hid);
         u8 *data;
         int ret;
         int n;
 
-        switch (usage->hid) {
+        switch (equivalent_usage) {
         case HID_DG_CONTACTMAX:
                 /* leave touch_max as is if predefined */
                 if (!features->touch_max) {
@@ -325,8 +326,14 @@ static void wacom_post_parse_hid(struct hid_device *hdev,
         if (features->type == HID_GENERIC) {
                 /* Any last-minute generic device setup */
                 if (features->touch_max > 1) {
-                        input_mt_init_slots(wacom_wac->touch_input, wacom_wac->features.touch_max,
-                                    INPUT_MT_DIRECT);
+                        if (features->device_type & WACOM_DEVICETYPE_DIRECT)
+                                input_mt_init_slots(wacom_wac->touch_input,
+                                                    wacom_wac->features.touch_max,
+                                                    INPUT_MT_DIRECT);
+                        else
+                                input_mt_init_slots(wacom_wac->touch_input,
+                                                    wacom_wac->features.touch_max,
+                                                    INPUT_MT_POINTER);
                 }
         }
 }
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 636c4a1ee958..2eeaa05e2068 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -1599,7 +1599,7 @@ static int wacom_tpc_irq(struct wacom_wac *wacom, size_t len)
         return 0;
 }
 
-static int wacom_equivalent_usage(int usage)
+int wacom_equivalent_usage(int usage)
 {
         if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMDIGITIZER) {
                 int subpage = (usage & 0xFF00) << 8;
@@ -1626,6 +1626,16 @@ static int wacom_equivalent_usage(int usage)
                 return subpage | subusage;
         }
 
+        if ((usage & HID_USAGE_PAGE) == WACOM_HID_UP_WACOMTOUCH) {
+                int subpage = (usage & 0xFF00) << 8;
+                int subusage = (usage & 0xFF);
+
+                if (subpage == HID_UP_UNDEFINED)
+                        subpage = WACOM_HID_SP_DIGITIZER;
+
+                return subpage | subusage;
+        }
+
         return usage;
 }
 
@@ -2218,8 +2228,10 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev,
 
                 for (j = 0; j < field->maxusage; j++) {
                         struct hid_usage *usage = &field->usage[j];
+                        unsigned int equivalent_usage =
+                                wacom_equivalent_usage(usage->hid);
 
-                        switch (usage->hid) {
+                        switch (equivalent_usage) {
                         case HID_GD_X:
                         case HID_GD_Y:
                         case HID_DG_WIDTH:
@@ -2228,7 +2240,7 @@ static void wacom_wac_finger_pre_report(struct hid_device *hdev,
                         case HID_DG_INRANGE:
                         case HID_DG_INVERT:
                         case HID_DG_TIPSWITCH:
-                                hid_data->last_slot_field = usage->hid;
+                                hid_data->last_slot_field = equivalent_usage;
                                 break;
                         case HID_DG_CONTACTCOUNT:
                                 hid_data->cc_report = report->id;
@@ -2283,8 +2295,8 @@ void wacom_wac_usage_mapping(struct hid_device *hdev,
         struct wacom_wac *wacom_wac = &wacom->wacom_wac;
         struct wacom_features *features = &wacom_wac->features;
 
-        /* currently, only direct devices have proper hid report descriptors */
-        features->device_type |= WACOM_DEVICETYPE_DIRECT;
+        if (WACOM_DIRECT_DEVICE(field))
+                features->device_type |= WACOM_DEVICETYPE_DIRECT;
 
         if (WACOM_PAD_FIELD(field))
                 wacom_wac_pad_usage_mapping(hdev, field, usage);
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index dac95ba49888..da38f7736a7a 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -101,6 +101,7 @@
 #define WACOM_HID_SP_DIGITIZER          0x000d0000
 #define WACOM_HID_SP_DIGITIZERINFO      0x00100000
 #define WACOM_HID_WD_DIGITIZER          (WACOM_HID_UP_WACOMDIGITIZER | 0x01)
+#define WACOM_HID_WD_PEN                (WACOM_HID_UP_WACOMDIGITIZER | 0x02)
 #define WACOM_HID_WD_SENSE              (WACOM_HID_UP_WACOMDIGITIZER | 0x36)
 #define WACOM_HID_WD_DIGITIZERFNKEYS    (WACOM_HID_UP_WACOMDIGITIZER | 0x39)
 #define WACOM_HID_WD_SERIALHI           (WACOM_HID_UP_WACOMDIGITIZER | 0x5c)
@@ -137,6 +138,12 @@
 #define WACOM_HID_UP_G11                0xff110000
 #define WACOM_HID_G11_PEN               (WACOM_HID_UP_G11 | 0x02)
 #define WACOM_HID_G11_TOUCHSCREEN       (WACOM_HID_UP_G11 | 0x11)
+#define WACOM_HID_UP_WACOMTOUCH         0xff000000
+#define WACOM_HID_WT_TOUCHSCREEN        (WACOM_HID_UP_WACOMTOUCH | 0x04)
+#define WACOM_HID_WT_TOUCHPAD           (WACOM_HID_UP_WACOMTOUCH | 0x05)
+#define WACOM_HID_WT_CONTACTMAX         (WACOM_HID_UP_WACOMTOUCH | 0x55)
+#define WACOM_HID_WT_X                  (WACOM_HID_UP_WACOMTOUCH | 0x130)
+#define WACOM_HID_WT_Y                  (WACOM_HID_UP_WACOMTOUCH | 0x131)
 
 #define WACOM_PAD_FIELD(f)      (((f)->physical == HID_DG_TABLETFUNCTIONKEY) || \
                                  ((f)->physical == WACOM_HID_WD_DIGITIZERFNKEYS) || \
@@ -154,7 +161,14 @@
                                  ((f)->physical == HID_DG_FINGER) || \
                                  ((f)->application == HID_DG_TOUCHSCREEN) || \
                                  ((f)->application == WACOM_HID_G9_TOUCHSCREEN) || \
-                                 ((f)->application == WACOM_HID_G11_TOUCHSCREEN))
+                                 ((f)->application == WACOM_HID_G11_TOUCHSCREEN) || \
+                                 ((f)->application == WACOM_HID_WT_TOUCHPAD) || \
+                                 ((f)->application == HID_DG_TOUCHPAD))
+
+#define WACOM_DIRECT_DEVICE(f)  (((f)->application == HID_DG_TOUCHSCREEN) || \
+                                 ((f)->application == WACOM_HID_WT_TOUCHSCREEN) || \
+                                 ((f)->application == HID_DG_PEN) || \
+                                 ((f)->application == WACOM_HID_WD_PEN))
 
 enum {
         PENPARTNER = 0,