[PATCH] Input: atmel_mxt_ts - Report pressure information from the driver

[PATCH] Input: atmel_mxt_ts - Report pressure information from the driver

[Yufeng Shen]

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.

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..7cedb06 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

Re: [PATCH] Input: atmel_mxt_ts - Report pressure information from the driver

[Wanlong Gao]

On 07/27/2011 07:05 AM, 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.
>
> 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..7cedb06 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;
Spaces you are introducing.
>   };
>
>   /* 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;
same
>
>   	/* 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];
same
>
>   	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;
same
>
>   	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);
So, please indent with tabs instead of spaces.

-- 
Thanks
Best Regards
Wanlong Gao