This patch adds parsing pad buttons for Intuos4. The change of "buttstate"
type is required, because there are 9 buttons on Intuos4, so "char" wasn't
enough.

Signed-off-by: Przemo Firszt <[email protected]>
---
 drivers/hid/hid-wacom.c |   31 ++++++++++++++++++++++++++++++-
 1 files changed, 30 insertions(+), 1 deletions(-)

diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
index f218348..378b26f 100644
--- a/drivers/hid/hid-wacom.c
+++ b/drivers/hid/hid-wacom.c
@@ -33,7 +33,7 @@
 
 struct wacom_data {
        __u16 tool;
-       unsigned char butstate;
+       __u16 butstate;
        __u8 features;
        unsigned char high_speed;
 #ifdef CONFIG_HID_WACOM_POWER_SUPPLY
@@ -306,6 +306,27 @@ static int wacom_gr_parse_report(struct hid_device *hdev,
        return 1;
 }
 
+static void wacom_i4_parse_button_report(struct wacom_data *wdata,
+                      struct input_dev *input, unsigned char *data)
+{
+       __u16 new_butstate;
+
+       new_butstate = (data[3] << 1) | (data[2] & 0x01);
+       if (new_butstate != wdata->butstate) {
+               wdata->butstate = new_butstate;
+               input_report_key(input, BTN_0, new_butstate & 0x001);
+               input_report_key(input, BTN_1, new_butstate & 0x002);
+               input_report_key(input, BTN_2, new_butstate & 0x004);
+               input_report_key(input, BTN_3, new_butstate & 0x008);
+               input_report_key(input, BTN_4, new_butstate & 0x010);
+               input_report_key(input, BTN_5, new_butstate & 0x020);
+               input_report_key(input, BTN_6, new_butstate & 0x040);
+               input_report_key(input, BTN_7, new_butstate & 0x080);
+               input_report_key(input, BTN_8, new_butstate & 0x100);
+               input_sync(input);
+       }
+}
+
 static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
                        struct input_dev *input, unsigned char *data)
 {
@@ -369,6 +390,7 @@ static void wacom_i4_parse_report(struct hid_device *hdev,
                wdata->features = data[2];
                break;
        case 0x0C: /* Button report */
+               wacom_i4_parse_button_report(wdata, input, data);
                break;
        default:
                hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
@@ -463,6 +485,13 @@ static int wacom_input_mapped(struct hid_device *hdev, 
struct hid_input *hi,
                input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
                break;
        case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
+               __set_bit(BTN_2, input->keybit);
+               __set_bit(BTN_3, input->keybit);
+               __set_bit(BTN_4, input->keybit);
+               __set_bit(BTN_5, input->keybit);
+               __set_bit(BTN_6, input->keybit);
+               __set_bit(BTN_7, input->keybit);
+               __set_bit(BTN_8, input->keybit);
                input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
                input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
                input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
-- 
1.7.6.4


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