This patch implements reporting id and serial number of used tool.
Reported values are the same as for USB on of the driver for wacom Intuos4 WL

Signed-off-by: Przemo Firszt <prz...@firszt.eu>
---
 drivers/hid/hid-wacom.c |   21 +++++++++++++++------
 1 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index a793753..49b9178 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -35,6 +35,8 @@ struct wacom_data {
        __u16 tool;
        unsigned char butstate;
        __u8 features;
+       __u32 id;
+       __u32 serial;
        unsigned char high_speed;
 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
        int battery_capacity;
@@ -318,26 +320,30 @@ static void wacom_i4_parse_pen_report(struct wacom_data 
*wdata,
                        struct input_dev *input, unsigned char *data)
 {
        __u16 x, y, pressure;
-       __u32 id;
 
        switch (data[1]) {
        case 0x80: /* Out of proximity report */
                input_report_key(input, BTN_TOUCH, 0);
                input_report_abs(input, ABS_PRESSURE, 0);
                input_report_key(input, wdata->tool, 0);
+               input_report_abs(input, ABS_MISC, 0);
+               input_event(input, EV_MSC, MSC_SERIAL, wdata->serial);
                wdata->tool = 0;
                input_sync(input);
                break;
        case 0xC2: /* Tool report */
-               id = ((data[2] << 4) | (data[3] >> 4) |
+               wdata->id = ((data[2] << 4) | (data[3] >> 4) |
                        ((data[7] & 0x0f) << 20) |
-                       ((data[8] & 0xf0) << 12)) & 0xfffff;
+                       ((data[8] & 0xf0) << 12));
+               wdata->serial = ((data[3] & 0x0f) << 28) +
+                               (data[4] << 20) + (data[5] << 12) +
+                               (data[6] << 4) + (data[7] >> 4);
 
-               switch (id) {
-               case 0x802:
+               switch (wdata->id) {
+               case 0x100802:
                        wdata->tool = BTN_TOOL_PEN;
                        break;
-               case 0x80A:
+               case 0x10080A:
                        wdata->tool = BTN_TOOL_RUBBER;
                        break;
                }
@@ -356,6 +362,9 @@ static void wacom_i4_parse_pen_report(struct wacom_data 
*wdata,
                input_report_abs(input, ABS_X, x);
                input_report_abs(input, ABS_Y, y);
                input_report_abs(input, ABS_PRESSURE, pressure);
+               input_report_abs(input, ABS_MISC, wdata->id);
+               input_event(input, EV_MSC, MSC_SERIAL, wdata->serial);
+               input_report_key(input, wdata->tool, 1);
                input_sync(input);
                break;
        }
-- 
1.7.6.4


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