Input: wacom - separate pen from express keys on Graphire

Since Graphire/Bamboo devices report pen and expresskeys in the same
data packet, we need to send a input_sync event to separate pen data
from expresskeys for X11 driver to process them properly.

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
index e4e8c36..1056f14 100644 (file)
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -154,6 +154,7 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 {
        unsigned char *data = wacom->data;
        int x, y, rw;
+       static int penData = 0;
 
        if (data[0] != WACOM_REPORT_PENABLED) {
                dbg("wacom_graphire_irq: received unknown report #%d", data[0]);
@@ -162,6 +163,7 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 
        if (data[1] & 0x80) {
                /* in prox and not a pad data */
+               penData = 1;
 
                switch ((data[1] >> 5) & 3) {
 
@@ -231,7 +233,11 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
        switch (wacom->features->type) {
            case WACOM_G4:
                if (data[7] & 0xf8) {
-                       wacom_input_sync(wcombo); /* sync last event */
+                       if (penData) {
+                               wacom_input_sync(wcombo); /* sync last event */
+                               if (!wacom->id[0])
+                                       penData = 0;
+                       }
                        wacom->id[1] = PAD_DEVICE_ID;
                        wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
                        wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
@@ -241,10 +247,15 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
                        wacom_report_abs(wcombo, ABS_MISC, wacom->id[1]);
                        wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
                } else if (wacom->id[1]) {
-                       wacom_input_sync(wcombo); /* sync last event */
+                       if (penData) {
+                               wacom_input_sync(wcombo); /* sync last event */
+                               if (!wacom->id[0])
+                                       penData = 0;
+                       }
                        wacom->id[1] = 0;
                        wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
                        wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
+                       wacom_report_rel(wcombo, REL_WHEEL, 0);
                        wacom_report_key(wcombo, BTN_TOOL_FINGER, 0);
                        wacom_report_abs(wcombo, ABS_MISC, 0);
                        wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
@@ -252,7 +263,11 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
                break;
            case WACOM_MO:
                if ((data[7] & 0xf8) || (data[8] & 0xff)) {
-                       wacom_input_sync(wcombo); /* sync last event */
+                       if (penData) {
+                               wacom_input_sync(wcombo); /* sync last event */
+                               if (!wacom->id[0])
+                                       penData = 0;
+                       }
                        wacom->id[1] = PAD_DEVICE_ID;
                        wacom_report_key(wcombo, BTN_0, (data[7] & 0x08));
                        wacom_report_key(wcombo, BTN_1, (data[7] & 0x20));
@@ -263,7 +278,11 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
                        wacom_report_abs(wcombo, ABS_MISC, wacom->id[1]);
                        wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
                } else if (wacom->id[1]) {
-                       wacom_input_sync(wcombo); /* sync last event */
+                       if (penData) {
+                               wacom_input_sync(wcombo); /* sync last event */
+                               if (!wacom->id[0])
+                                       penData = 0;
+                       }
                        wacom->id[1] = 0;
                        wacom_report_key(wcombo, BTN_0, (data[7] & 0x08));
                        wacom_report_key(wcombo, BTN_1, (data[7] & 0x20));