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Subject[PATCH 20/20] Input: atmel_mxt_ts - send all MT-B slots in one input report
Date
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).

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
---
drivers/input/touchscreen/atmel_mxt_ts.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index c397a01..dae8318 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -516,8 +516,7 @@ static int mxt_read_messages(struct mxt_data *data, u8 count,
sizeof(struct mxt_message) * count, messages);
}

-static void mxt_input_touchevent(struct mxt_data *data,
- struct mxt_message *message)
+static void mxt_input_touch(struct mxt_data *data, struct mxt_message *message)
{
struct device *dev = &data->client->dev;
struct input_dev *input_dev = data->input_dev;
@@ -571,9 +570,6 @@ static void mxt_input_touchevent(struct mxt_data *data,
input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, area);
/* TODO: Use vector to report ORIENTATION & TOUCH_MINOR */
}
-
- input_mt_report_pointer_emulation(input_dev, false);
- input_sync(input_dev);
}

static int mxt_proc_messages(struct mxt_data *data, u8 count)
@@ -581,6 +577,7 @@ static int mxt_proc_messages(struct mxt_data *data, u8 count)
struct device *dev = &data->client->dev;
struct mxt_message messages[count], *msg;
int ret;
+ bool update_input;

ret = mxt_read_messages(data, count, messages);
if (ret) {
@@ -588,12 +585,14 @@ static int mxt_proc_messages(struct mxt_data *data, u8 count)
return ret;
}

+ update_input = false;
for (msg = messages; msg < &messages[count]; msg++) {
mxt_dump_message(dev, msg);

if (msg->reportid >= data->T9_reportid_min &&
msg->reportid <= data->T9_reportid_max) {
- mxt_input_touchevent(data, msg);
+ mxt_input_touch(data, msg);
+ update_input = true;
} else if (msg->reportid == data->T6_reportid) {
unsigned csum = msg->message[1] |
(msg->message[2] << 8) |
@@ -603,6 +602,11 @@ static int mxt_proc_messages(struct mxt_data *data, u8 count)
}
}

+ if (update_input) {
+ input_mt_report_pointer_emulation(data->input_dev, false);
+ input_sync(data->input_dev);
+ }
+
return 0;
}

--
1.7.7.3


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