Input: hanwang - make compatible with xf86-input-wacom driver

Add necessary events so that Hanwang Art Master III tablet can be handled
by the stock xf86-input-wacom driver.

Signed-off-by: Xing Wei <weixing@hanwang.com.cn>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 33 insertions, 4 deletions

diff --git a/drivers/input/tablet/hanwang.c b/drivers/input/tablet/hanwang.c
index 3554e30ab41b..0701d948cdf3 100644
--- a/drivers/input/tablet/hanwang.c
+++ b/drivers/input/tablet/hanwang.c
@@ -44,6 +44,13 @@ MODULE_LICENSE(DRIVER_LICENSE);
 
 #define ART_MASTERIII_PKGLEN_MAX        10
 
+/* device IDs */
+#define STYLUS_DEVICE_ID        0x02
+#define TOUCH_DEVICE_ID         0x03
+#define CURSOR_DEVICE_ID        0x06
+#define ERASER_DEVICE_ID        0x0A
+#define PAD_DEVICE_ID           0x0F
+
 /* match vendor and interface info  */
 #define HANWANG_TABLET_DEVICE(vend, cl, sc, pr) \
         .match_flags = USB_DEVICE_ID_MATCH_VENDOR \
@@ -61,6 +68,7 @@ struct hanwang {
         struct urb *irq;
         const struct hanwang_features *features;
         unsigned int current_tool;
+        unsigned int current_id;
         char name[64];
         char phys[32];
 };
@@ -86,16 +94,22 @@ static const struct hanwang_features features_array[] = {
 };
 
 static const int hw_eventtypes[] = {
-        EV_KEY, EV_ABS,
+        EV_KEY, EV_ABS, EV_MSC,
 };
 
 static const int hw_absevents[] = {
-        ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL, ABS_PRESSURE,
+        ABS_X, ABS_Y, ABS_TILT_X, ABS_TILT_Y, ABS_WHEEL,
+        ABS_PRESSURE, ABS_MISC,
 };
 
 static const int hw_btnevents[] = {
-        BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER, BTN_TOOL_MOUSE,
-        BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8
+        BTN_STYLUS, BTN_STYLUS2, BTN_TOOL_PEN, BTN_TOOL_RUBBER,
+        BTN_TOOL_MOUSE, BTN_TOOL_FINGER,
+        BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8,
+};
+
+static const int hw_mscevents[] = {
+        MSC_SERIAL,
 };
 
 static void hanwang_parse_packet(struct hanwang *hanwang)
@@ -109,20 +123,24 @@ static void hanwang_parse_packet(struct hanwang *hanwang)
         case 0x02:      /* data packet */
                 switch (data[1]) {
                 case 0x80:      /* tool prox out */
+                        hanwang->current_id = 0;
                         input_report_key(input_dev, hanwang->current_tool, 0);
                         break;
 
                 case 0xc2:      /* first time tool prox in */
                         switch (data[3] & 0xf0) {
                         case 0x20:
+                                hanwang->current_id = STYLUS_DEVICE_ID;
                                 hanwang->current_tool = BTN_TOOL_PEN;
                                 input_report_key(input_dev, BTN_TOOL_PEN, 1);
                                 break;
                         case 0xa0:
+                                hanwang->current_id = ERASER_DEVICE_ID;
                                 hanwang->current_tool = BTN_TOOL_RUBBER;
                                 input_report_key(input_dev, BTN_TOOL_RUBBER, 1);
                                 break;
                         default:
+                                hanwang->current_id = 0;
                                 dev_dbg(&dev->dev,
                                         "unknown tablet tool %02x ", data[0]);
                                 break;
@@ -144,15 +162,23 @@ static void hanwang_parse_packet(struct hanwang *hanwang)
                         input_report_key(input_dev, BTN_STYLUS2, data[1] & 0x04);
                         break;
                 }
+                input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
+                input_event(input_dev, EV_MSC, MSC_SERIAL,
+                                hanwang->features->pid);
                 break;
 
         case 0x0c:
                 /* roll wheel */
+                hanwang->current_id = PAD_DEVICE_ID;
+                input_report_key(input_dev, BTN_TOOL_FINGER, data[1] ||
+                                                data[2] || data[3]);
                 input_report_abs(input_dev, ABS_WHEEL, data[1]);
                 input_report_key(input_dev, BTN_0, data[2]);
                 for (i = 0; i < 8; i++)
                         input_report_key(input_dev,
                                          BTN_1 + i, data[3] & (1 << i));
+                input_report_abs(input_dev, ABS_MISC, hanwang->current_id);
+                input_event(input_dev, EV_MSC, MSC_SERIAL, 0xffffffff);
                 break;
 
         default:
@@ -287,6 +313,9 @@ static int hanwang_probe(struct usb_interface *intf, const struct usb_device_id
         for (i = 0; i < ARRAY_SIZE(hw_btnevents); ++i)
                 __set_bit(hw_btnevents[i], input_dev->keybit);
 
+        for (i = 0; i < ARRAY_SIZE(hw_mscevents); ++i)
+                __set_bit(hw_mscevents[i], input_dev->mscbit);
+
         input_set_abs_params(input_dev, ABS_X,
                              0, hanwang->features->max_x, 4, 0);
         input_set_abs_params(input_dev, ABS_Y,