On Mon, Aug 15, 2011 at 11:02:30AM -0400, Yufeng Shen wrote:
> 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
> v3: added signed-off-by
>
> Change-Id: Ie0e4683a3cd5ec79222f7682b0ddc24f909af543
> Signed-off-by: Yufeng Shen <miletus@xxxxxxxxxxxx>
> ---
> 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
>
Acked-by: Henrik Rydberg <rydberg@xxxxxxxxxxx>
Thanks,
Henrik
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