Input: atmel_mxt_ts - send all MT-B slots in one input report

Each interrupt contains information for all contacts with changing
properties.  Process all of this information at once, and send it all in a
a single input report (ie input events ending in EV_SYN/SYN_REPORT).

This patch was tested using an MXT224E.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 2746b0dc7f369724caf28ac1b46bbdbbeb73bf7d..4c9a06c7eae3064b8686b906cb920d3daa33a2ea 100644 (file)
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -547,9 +547,6 @@ static void mxt_input_touchevent(struct mxt_data *data,
                input_report_abs(input_dev, ABS_MT_PRESSURE, pressure);
                input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
        }
-
-       input_mt_report_pointer_emulation(input_dev, false);
-       input_sync(input_dev);
 }
 
 static bool mxt_is_T9_message(struct mxt_data *data, struct mxt_message *msg)
@@ -565,6 +562,7 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
        struct device *dev = &data->client->dev;
        int id;
        u8 reportid;
+       bool update_input = false;
 
        do {
                if (mxt_read_message(data, &message)) {
@@ -576,12 +574,19 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 
                id = reportid - data->T9_reportid_min;
 
-               if (mxt_is_T9_message(data, &message))
+               if (mxt_is_T9_message(data, &message)) {
                        mxt_input_touchevent(data, &message, id);
-               else
+                       update_input = true;
+               } else {
                        mxt_dump_message(dev, &message);
+               }
        } while (reportid != 0xff);
 
+       if (update_input) {
+               input_mt_report_pointer_emulation(data->input_dev, false);
+               input_sync(data->input_dev);
+       }
+
 end:
        return IRQ_HANDLED;
 }