[PATCH 21/22 v4] Input: atmel_mxt_ts - send all MT-B slots in one input report

[Daniel Kurtz]

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@xxxxxxxxxxxx>
---
 drivers/input/touchscreen/atmel_mxt_ts.c |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index 460c10f..06f2b7a 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -540,9 +540,6 @@ 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 irqreturn_t mxt_interrupt(int irq, void *dev_id)
@@ -554,6 +551,7 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 	u8 reportid;
 	u8 max_reportid;
 	u8 min_reportid;
+	bool update_input = false;
 
 	do {
 		if (mxt_read_message(data, &message)) {
@@ -567,12 +565,19 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id)
 		min_reportid = data->T9_reportid_min;
 		id = reportid - min_reportid;
 
-		if (reportid >= min_reportid && reportid <= max_reportid)
+		if (reportid >= min_reportid && reportid <= max_reportid) {
 			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;
 }
-- 
1.7.7.3

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