Input: wm97xx - add BTN_TOUCH event to wm97xx to use it with Android

Android expects BTN_TOUCH events when pen state changes. Add BTN_TOUCH
event reporting to allow use of wm97xx touchscreen controller wiht
Android devices.

Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index d15aa11d7056..cec480bffe38 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -409,6 +409,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
                         wm->pen_is_down = 0;
                         dev_dbg(wm->dev, "pen up\n");
                         input_report_abs(wm->input_dev, ABS_PRESSURE, 0);
+                        input_report_key(wm->input_dev, BTN_TOUCH, 0);
                         input_sync(wm->input_dev);
                 } else if (!(rc & RC_AGAIN)) {
                         /* We need high frequency updates only while
@@ -433,6 +434,7 @@ static int wm97xx_read_samples(struct wm97xx *wm)
                 input_report_abs(wm->input_dev, ABS_X, data.x & 0xfff);
                 input_report_abs(wm->input_dev, ABS_Y, data.y & 0xfff);
                 input_report_abs(wm->input_dev, ABS_PRESSURE, data.p & 0xfff);
+                input_report_key(wm->input_dev, BTN_TOUCH, 1);
                 input_sync(wm->input_dev);
                 wm->pen_is_down = 1;
                 wm->ts_reader_interval = wm->ts_reader_min_interval;
@@ -628,18 +630,21 @@ static int wm97xx_probe(struct device *dev)
         wm->input_dev->phys = "wm97xx";
         wm->input_dev->open = wm97xx_ts_input_open;
         wm->input_dev->close = wm97xx_ts_input_close;
-        set_bit(EV_ABS, wm->input_dev->evbit);
-        set_bit(ABS_X, wm->input_dev->absbit);
-        set_bit(ABS_Y, wm->input_dev->absbit);
-        set_bit(ABS_PRESSURE, wm->input_dev->absbit);
+
+        __set_bit(EV_ABS, wm->input_dev->evbit);
+        __set_bit(EV_KEY, wm->input_dev->evbit);
+        __set_bit(BTN_TOUCH, wm->input_dev->keybit);
+
         input_set_abs_params(wm->input_dev, ABS_X, abs_x[0], abs_x[1],
                              abs_x[2], 0);
         input_set_abs_params(wm->input_dev, ABS_Y, abs_y[0], abs_y[1],
                              abs_y[2], 0);
         input_set_abs_params(wm->input_dev, ABS_PRESSURE, abs_p[0], abs_p[1],
                              abs_p[2], 0);
+
         input_set_drvdata(wm->input_dev, wm);
         wm->input_dev->dev.parent = dev;
+
         ret = input_register_device(wm->input_dev);
         if (ret < 0)
                 goto dev_alloc_err;