Input: wacom - add Intuos5 Touch Ring/ExpressKey support

Intuos5 uses a new report type for Touch Ring and ExpressKey data.
Note that data from the capacitive sensors present on the ExpressKeys
will be ignored until a proper way is found to expose it.

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_wac.c b/drivers/input/tablet/wacom_wac.c
index 20ab364..f4a9efd 100644 (file)
--- a/drivers/input/tablet/wacom_wac.c
+++ b/drivers/input/tablet/wacom_wac.c
@@ -484,7 +484,8 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
        int idx = 0, result;
 
        if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_INTUOSREAD
-               && data[0] != WACOM_REPORT_INTUOSWRITE && data[0] != WACOM_REPORT_INTUOSPAD) {
+               && data[0] != WACOM_REPORT_INTUOSWRITE && data[0] != WACOM_REPORT_INTUOSPAD
+               && data[0] != WACOM_REPORT_INTUOS5PAD) {
                dbg("wacom_intuos_irq: received unknown report #%d", data[0]);
                 return 0;
        }
@@ -494,7 +495,7 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
                idx = data[1] & 0x01;
 
        /* pad packets. Works as a second tool and is always in prox */
-       if (data[0] == WACOM_REPORT_INTUOSPAD) {
+       if (data[0] == WACOM_REPORT_INTUOSPAD || data[0] == WACOM_REPORT_INTUOS5PAD) {
                if (features->type >= INTUOS4S && features->type <= INTUOS4L) {
                        input_report_key(input, BTN_0, (data[2] & 0x01));
                        input_report_key(input, BTN_1, (data[3] & 0x01));
@@ -570,6 +571,34 @@ static int wacom_intuos_irq(struct wacom_wac *wacom)
                                input_report_key(input, wacom->tool[1], 0);
                                input_report_abs(input, ABS_MISC, 0);
                        }
+               } else if (features->type >= INTUOS5S && features->type <= INTUOS5L) {
+                       int i;
+
+                       /* Touch ring mode switch has no capacitive sensor */
+                       input_report_key(input, BTN_0, (data[3] & 0x01));
+
+                       /*
+                        * ExpressKeys on Intuos5 have a capacitive sensor in
+                        * addition to the mechanical switch. Switch data is
+                        * stored in data[4], capacitive data in data[5].
+                        */
+                       for (i = 0; i < 8; i++)
+                               input_report_key(input, BTN_1 + i, data[4] & (1 << i));
+
+                       if (data[2] & 0x80) {
+                               input_report_abs(input, ABS_WHEEL, (data[2] & 0x7f));
+                       } else {
+                               /* Out of proximity, clear wheel value. */
+                               input_report_abs(input, ABS_WHEEL, 0);
+                       }
+
+                       if (data[2] | (data[3] & 0x01) | data[4]) {
+                               input_report_key(input, wacom->tool[1], 1);
+                               input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
+                       } else {
+                               input_report_key(input, wacom->tool[1], 0);
+                               input_report_abs(input, ABS_MISC, 0);
+                       }
                } else {
                        if (features->type == WACOM_21UX2) {
                                input_report_key(input, BTN_0, (data[5] & 0x01));

diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
index 0aa00ce..17ba186 100644 (file)
--- a/drivers/input/tablet/wacom_wac.h
+++ b/drivers/input/tablet/wacom_wac.h
@@ -38,6 +38,7 @@
 #define WACOM_REPORT_INTUOSREAD                5
 #define WACOM_REPORT_INTUOSWRITE       6
 #define WACOM_REPORT_INTUOSPAD         12
+#define WACOM_REPORT_INTUOS5PAD                3
 #define WACOM_REPORT_TPC1FG            6
 #define WACOM_REPORT_TPC2FG            13
 #define WACOM_REPORT_TPCHID            15