Atmel mxt1386 touch controller has the touch pressure information but
the current driver atmel_mxt_ts does not expose it to the user space.
This patch makes the driver report the touch pressure information to
user space.
ChangeLog:
v2: fixed indentation as commented by Wanlong Gao
Change-Id: Ie0e4683a3cd5ec79222f7682b0ddc24f909af543
---
drivers/input/touchscreen/atmel_mxt_ts.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
index ae00604..9bdf4e0 100644
--- a/drivers/input/touchscreen/atmel_mxt_ts.c
+++ b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -244,6 +244,7 @@ struct mxt_finger {
int x;
int y;
int area;
+ int pressure;
};
/* Each client has this additional data */
@@ -536,6 +537,8 @@ static void mxt_input_report(struct mxt_data *data, int single_id)
finger[id].x);
input_report_abs(input_dev, ABS_MT_POSITION_Y,
finger[id].y);
+ input_report_abs(input_dev, ABS_MT_PRESSURE,
+ finger[id].pressure);
} else {
finger[id].status = 0;
}
@@ -560,6 +563,7 @@ static void mxt_input_touchevent(struct mxt_data *data,
int x;
int y;
int area;
+ int pressure;
/* Check the touch is present on the screen */
if (!(status & MXT_DETECT)) {
@@ -584,6 +588,7 @@ static void mxt_input_touchevent(struct mxt_data *data,
y = y >> 2;
area = message->message[4];
+ pressure = message->message[5];
dev_dbg(dev, "[%d] %s x: %d, y: %d, area: %d\n", id,
status & MXT_MOVE ? "moved" : "pressed",
@@ -594,6 +599,7 @@ static void mxt_input_touchevent(struct mxt_data *data,
finger[id].x = x;
finger[id].y = y;
finger[id].area = area;
+ finger[id].pressure = pressure;
mxt_input_report(data, id);
}
@@ -1125,6 +1131,8 @@ static int __devinit mxt_probe(struct i2c_client *client,
0, data->max_x, 0, 0);
input_set_abs_params(input_dev, ABS_MT_POSITION_Y,
0, data->max_y, 0, 0);
+ input_set_abs_params(input_dev, ABS_MT_PRESSURE,
+ 0, 255, 0, 0);
input_set_drvdata(input_dev, data);
i2c_set_clientdata(client, data);
--
1.7.3.1
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