[PATCH] psmouse - focaltech report finger width to userspace

[PATCH] psmouse - focaltech report finger width to userspace

[Dmitry Tunin]

Focaltech touchpads report finger width in packet[5] of absolute packet.
Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
0xff is reported, when a large contact area is detected.
This can be handled in userspace.

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
---
 drivers/input/mouse/focaltech.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index 23d2594..0c3b698 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -105,6 +105,16 @@ struct focaltech_hw_state {
 
 	/* True if the clickpad has been pressed. */
 	bool pressed;
+
+	/*
+	* Finger width 0-7 and 15 for a very big contact area.
+	* 15 value stays until the finger is released.
+	* Width is reported only in absolute packets.
+	* Since hardware reports width only for last touching finger,
+	* there is no need to store width for every specific finger, so 
+	* we keep only last value reported.
+	*/
+	unsigned int width;
 };
 
 struct focaltech_data {
@@ -112,7 +122,7 @@ struct focaltech_data {
 	struct focaltech_hw_state state;
 };
 
-static void focaltech_report_state(struct psmouse *psmouse)
+static void focaltech_report_state(struct psmouse *psmouse, bool abs)
 {
 	struct focaltech_data *priv = psmouse->private;
 	struct focaltech_hw_state *state = &priv->state;
@@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
 			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
 			input_report_abs(dev, ABS_MT_POSITION_Y,
 					 priv->y_max - clamped_y);
+			if (abs) input_report_abs(dev, ABS_TOOL_WIDTH, state->width);
 		}
 	}
 	input_mt_report_pointer_emulation(dev, true);
@@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
 
 	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
 	state->fingers[finger].y = (packet[3] << 8) | packet[4];
+	state->width = packet[5] >> 4;
 	state->fingers[finger].valid = true;
 }
 
@@ -228,22 +240,23 @@ static void focaltech_process_packet(struct psmouse *psmouse)
 	switch (packet[0] & 0xf) {
 	case FOC_TOUCH:
 		focaltech_process_touch_packet(psmouse, packet);
+		focaltech_report_state(psmouse, false);
 		break;
 
 	case FOC_ABS:
 		focaltech_process_abs_packet(psmouse, packet);
+		focaltech_report_state(psmouse, true);
 		break;
 
 	case FOC_REL:
 		focaltech_process_rel_packet(psmouse, packet);
+		focaltech_report_state(psmouse, false);
 		break;
 
 	default:
 		psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]);
 		break;
 	}
-
-	focaltech_report_state(psmouse);
 }
 
 static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse)
@@ -331,6 +344,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
 	__set_bit(EV_ABS, dev->evbit);
 	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
 	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
+	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
 	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
 	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
 }
-- 
1.9.1

Re: [PATCH] psmouse - focaltech report finger width to userspace

[Dmitry Torokhov]

On Sat, May 30, 2015 at 02:00:59AM +0300, Dmitry Tunin wrote:
> Focaltech touchpads report finger width in packet[5] of absolute packet.
> Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
> 0xff is reported, when a large contact area is detected.
> This can be handled in userspace.
> 
> Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>

Let's add a few people...

> ---
>  drivers/input/mouse/focaltech.c | 20 +++++++++++++++++---
>  1 file changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
> index 23d2594..0c3b698 100644
> --- a/drivers/input/mouse/focaltech.c
> +++ b/drivers/input/mouse/focaltech.c
> @@ -105,6 +105,16 @@ struct focaltech_hw_state {
>  
>  	/* True if the clickpad has been pressed. */
>  	bool pressed;
> +
> +	/*
> +	* Finger width 0-7 and 15 for a very big contact area.
> +	* 15 value stays until the finger is released.
> +	* Width is reported only in absolute packets.
> +	* Since hardware reports width only for last touching finger,
> +	* there is no need to store width for every specific finger, so 
> +	* we keep only last value reported.
> +	*/
> +	unsigned int width;
>  };
>  
>  struct focaltech_data {
> @@ -112,7 +122,7 @@ struct focaltech_data {
>  	struct focaltech_hw_state state;
>  };
>  
> -static void focaltech_report_state(struct psmouse *psmouse)
> +static void focaltech_report_state(struct psmouse *psmouse, bool abs)
>  {
>  	struct focaltech_data *priv = psmouse->private;
>  	struct focaltech_hw_state *state = &priv->state;
> @@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
>  			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
>  			input_report_abs(dev, ABS_MT_POSITION_Y,
>  					 priv->y_max - clamped_y);
> +			if (abs) input_report_abs(dev, ABS_TOOL_WIDTH, state->width);

I am not sure this condition and the change in focaltech_process_packet
are needed. The relative packets augment absolute one and we expect
width not change so we can always report state->width (either updated or
cached) and input core will drop dupes.

>  		}
>  	}
>  	input_mt_report_pointer_emulation(dev, true);
> @@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
>  
>  	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
>  	state->fingers[finger].y = (packet[3] << 8) | packet[4];
> +	state->width = packet[5] >> 4;
>  	state->fingers[finger].valid = true;
>  }
>  
> @@ -228,22 +240,23 @@ static void focaltech_process_packet(struct psmouse *psmouse)
>  	switch (packet[0] & 0xf) {
>  	case FOC_TOUCH:
>  		focaltech_process_touch_packet(psmouse, packet);
> +		focaltech_report_state(psmouse, false);
>  		break;
>  
>  	case FOC_ABS:
>  		focaltech_process_abs_packet(psmouse, packet);
> +		focaltech_report_state(psmouse, true);
>  		break;
>  
>  	case FOC_REL:
>  		focaltech_process_rel_packet(psmouse, packet);
> +		focaltech_report_state(psmouse, false);
>  		break;
>  
>  	default:
>  		psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]);
>  		break;
>  	}
> -
> -	focaltech_report_state(psmouse);
>  }
>  
>  static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse)
> @@ -331,6 +344,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
>  	__set_bit(EV_ABS, dev->evbit);
>  	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
>  	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
> +	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
>  	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
>  	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
>  }
> -- 
> 1.9.1
> 

Thanks.

-- 
Dmitry

Re: [PATCH] psmouse - focaltech report finger width to userspace

[Dmitry Tunin]

30.05.2015 02:37, Dmitry Torokhov пишет:
> On Sat, May 30, 2015 at 02:00:59AM +0300, Dmitry Tunin wrote:
>> Focaltech touchpads report finger width in packet[5] of absolute packet.
>> Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
>> 0xff is reported, when a large contact area is detected.
>> This can be handled in userspace.
>>
>> Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
> 
> Let's add a few people...
> 
>> ---
>>  drivers/input/mouse/focaltech.c | 20 +++++++++++++++++---
>>  1 file changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
>> index 23d2594..0c3b698 100644
>> --- a/drivers/input/mouse/focaltech.c
>> +++ b/drivers/input/mouse/focaltech.c
>> @@ -105,6 +105,16 @@ struct focaltech_hw_state {
>>  
>>  	/* True if the clickpad has been pressed. */
>>  	bool pressed;
>> +
>> +	/*
>> +	* Finger width 0-7 and 15 for a very big contact area.
>> +	* 15 value stays until the finger is released.
>> +	* Width is reported only in absolute packets.
>> +	* Since hardware reports width only for last touching finger,
>> +	* there is no need to store width for every specific finger, so 
>> +	* we keep only last value reported.
>> +	*/
>> +	unsigned int width;
>>  };
>>  
>>  struct focaltech_data {
>> @@ -112,7 +122,7 @@ struct focaltech_data {
>>  	struct focaltech_hw_state state;
>>  };
>>  
>> -static void focaltech_report_state(struct psmouse *psmouse)
>> +static void focaltech_report_state(struct psmouse *psmouse, bool abs)
>>  {
>>  	struct focaltech_data *priv = psmouse->private;
>>  	struct focaltech_hw_state *state = &priv->state;
>> @@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
>>  			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
>>  			input_report_abs(dev, ABS_MT_POSITION_Y,
>>  					 priv->y_max - clamped_y);
>> +			if (abs) input_report_abs(dev, ABS_TOOL_WIDTH, state->width);
> 
> I am not sure this condition and the change in focaltech_process_packet
> are needed. The relative packets augment absolute one and we expect
> width not change so we can always report state->width (either updated or
> cached) and input core will drop dupes.

That's what I started from. Just added a report line. But this confused user space.
A touch packet reporting that a finger does not touch the pad together with width reported for same finger gets xorg-synaptics to ignore it.
E.g two-finger scrolling becomes unusable. xorg ignores "untouch" event and when fingers touch again, cursor jumps.

So finally this solution looks clean and safe to report width only with abs.

I sent some versions of these to linux-input mailing list and to Mathias, but forgot to add Dmitry.

I added a similar patch to my ppa, with backport of focaltech driver for Ubuntu 3.19 kernel users. There are >500 installs. 
No issues reported.


> 
>>  		}
>>  	}
>>  	input_mt_report_pointer_emulation(dev, true);
>> @@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
>>  
>>  	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
>>  	state->fingers[finger].y = (packet[3] << 8) | packet[4];
>> +	state->width = packet[5] >> 4;
>>  	state->fingers[finger].valid = true;
>>  }
>>  
>> @@ -228,22 +240,23 @@ static void focaltech_process_packet(struct psmouse *psmouse)
>>  	switch (packet[0] & 0xf) {
>>  	case FOC_TOUCH:
>>  		focaltech_process_touch_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, false);
>>  		break;
>>  
>>  	case FOC_ABS:
>>  		focaltech_process_abs_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, true);
>>  		break;
>>  
>>  	case FOC_REL:
>>  		focaltech_process_rel_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, false);
>>  		break;
>>  
>>  	default:
>>  		psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]);
>>  		break;
>>  	}
>> -
>> -	focaltech_report_state(psmouse);
>>  }
>>  
>>  static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse)
>> @@ -331,6 +344,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
>>  	__set_bit(EV_ABS, dev->evbit);
>>  	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
>>  	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
>> +	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
>>  	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
>>  	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
>>  }
>> -- 
>> 1.9.1
>>
> 
> Thanks.
> 

Re: [PATCH] psmouse - focaltech report finger width to userspace

[Dmitry Tunin]

30.05.2015 02:37, Dmitry Torokhov пишет:
> On Sat, May 30, 2015 at 02:00:59AM +0300, Dmitry Tunin wrote:
>> Focaltech touchpads report finger width in packet[5] of absolute packet.
>> Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
>> 0xff is reported, when a large contact area is detected.
>> This can be handled in userspace.
>>
>> Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
> 
> Let's add a few people...
> 
>> ---
>>  drivers/input/mouse/focaltech.c | 20 +++++++++++++++++---
>>  1 file changed, 17 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
>> index 23d2594..0c3b698 100644
>> --- a/drivers/input/mouse/focaltech.c
>> +++ b/drivers/input/mouse/focaltech.c
>> @@ -105,6 +105,16 @@ struct focaltech_hw_state {
>>  
>>  	/* True if the clickpad has been pressed. */
>>  	bool pressed;
>> +
>> +	/*
>> +	* Finger width 0-7 and 15 for a very big contact area.
>> +	* 15 value stays until the finger is released.
>> +	* Width is reported only in absolute packets.
>> +	* Since hardware reports width only for last touching finger,
>> +	* there is no need to store width for every specific finger, so 
>> +	* we keep only last value reported.
>> +	*/
>> +	unsigned int width;
>>  };
>>  
>>  struct focaltech_data {
>> @@ -112,7 +122,7 @@ struct focaltech_data {
>>  	struct focaltech_hw_state state;
>>  };
>>  
>> -static void focaltech_report_state(struct psmouse *psmouse)
>> +static void focaltech_report_state(struct psmouse *psmouse, bool abs)
>>  {
>>  	struct focaltech_data *priv = psmouse->private;
>>  	struct focaltech_hw_state *state = &priv->state;
>> @@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
>>  			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
>>  			input_report_abs(dev, ABS_MT_POSITION_Y,
>>  					 priv->y_max - clamped_y);
>> +			if (abs) input_report_abs(dev, ABS_TOOL_WIDTH, state->width);
> 
> I am not sure this condition and the change in focaltech_process_packet
> are needed. The relative packets augment absolute one and we expect
> width not change so we can always report state->width (either updated or
> cached) and input core will drop dupes.
> 
>>  		}
>>  	}
>>  	input_mt_report_pointer_emulation(dev, true);
>> @@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
>>  
>>  	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
>>  	state->fingers[finger].y = (packet[3] << 8) | packet[4];
>> +	state->width = packet[5] >> 4;
>>  	state->fingers[finger].valid = true;
>>  }
>>  
>> @@ -228,22 +240,23 @@ static void focaltech_process_packet(struct psmouse *psmouse)
>>  	switch (packet[0] & 0xf) {
>>  	case FOC_TOUCH:
>>  		focaltech_process_touch_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, false);
>>  		break;
>>  
>>  	case FOC_ABS:
>>  		focaltech_process_abs_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, true);
>>  		break;
>>  
>>  	case FOC_REL:
>>  		focaltech_process_rel_packet(psmouse, packet);
>> +		focaltech_report_state(psmouse, false);
>>  		break;
>>  
>>  	default:
>>  		psmouse_err(psmouse, "Unknown packet type: %02x\n", packet[0]);
>>  		break;
>>  	}
>> -
>> -	focaltech_report_state(psmouse);
>>  }
>>  
>>  static psmouse_ret_t focaltech_process_byte(struct psmouse *psmouse)
>> @@ -331,6 +344,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
>>  	__set_bit(EV_ABS, dev->evbit);
>>  	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
>>  	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
>> +	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
>>  	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
>>  	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
>>  }
>> -- 
>> 1.9.1
>>
> 
> Thanks.
> 
Hi Dmitry,

I tested it again and it appears that you are correct. In previous versions I stored width of each finger in state->fingers[finger].width.
And it confused everything up. Then I changed it to state->width, because there is only one relevant width.
Really duplicates are removed. I am sending v 2.

[PATCH v2] psmouse - focaltech report finger width to userspace

[Dmitry Tunin]

Focaltech touchpads report finger width in packet[5] of absolute packet.
Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
0xff is reported, when a large contact area is detected.
This can be handled in userspace.

Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>
---
 drivers/input/mouse/focaltech.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
index 23d2594..ed2ec3b 100644
--- a/drivers/input/mouse/focaltech.c
+++ b/drivers/input/mouse/focaltech.c
@@ -105,6 +105,16 @@ struct focaltech_hw_state {
 
 	/* True if the clickpad has been pressed. */
 	bool pressed;
+
+	/*
+	* Finger width 0-7 and 15 for a very big contact area.
+	* 15 value stays until the finger is released.
+	* Width is reported only in absolute packets.
+	* Since hardware reports width only for last touching finger,
+	* there is no need to store width for every specific finger, so 
+	* we keep only last value reported.
+	*/
+	unsigned int width;
 };
 
 struct focaltech_data {
@@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
 			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
 			input_report_abs(dev, ABS_MT_POSITION_Y,
 					 priv->y_max - clamped_y);
+			input_report_abs(dev, ABS_TOOL_WIDTH, state->width);
 		}
 	}
 	input_mt_report_pointer_emulation(dev, true);
@@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
 
 	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
 	state->fingers[finger].y = (packet[3] << 8) | packet[4];
+	state->width = packet[5] >> 4;
 	state->fingers[finger].valid = true;
 }
 
@@ -331,6 +343,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
 	__set_bit(EV_ABS, dev->evbit);
 	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
 	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
+	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
 	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
 	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
 }
-- 
1.9.1

Re: [PATCH v2] psmouse - focaltech report finger width to userspace

[Dmitry Torokhov]

On Sat, May 30, 2015 at 05:10:45PM +0300, Dmitry Tunin wrote:
> Focaltech touchpads report finger width in packet[5] of absolute packet.
> Range for width in raw format is 0x10 - 0x70. Second half-byte is always 0.
> 0xff is reported, when a large contact area is detected.
> This can be handled in userspace.
> 
> Signed-off-by: Dmitry Tunin <hanipouspilot@gmail.com>

Applied, thank you.

> ---
>  drivers/input/mouse/focaltech.c | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/input/mouse/focaltech.c b/drivers/input/mouse/focaltech.c
> index 23d2594..ed2ec3b 100644
> --- a/drivers/input/mouse/focaltech.c
> +++ b/drivers/input/mouse/focaltech.c
> @@ -105,6 +105,16 @@ struct focaltech_hw_state {
>  
>  	/* True if the clickpad has been pressed. */
>  	bool pressed;
> +
> +	/*
> +	* Finger width 0-7 and 15 for a very big contact area.
> +	* 15 value stays until the finger is released.
> +	* Width is reported only in absolute packets.
> +	* Since hardware reports width only for last touching finger,
> +	* there is no need to store width for every specific finger, so 
> +	* we keep only last value reported.
> +	*/
> +	unsigned int width;
>  };
>  
>  struct focaltech_data {
> @@ -137,6 +147,7 @@ static void focaltech_report_state(struct psmouse *psmouse)
>  			input_report_abs(dev, ABS_MT_POSITION_X, clamped_x);
>  			input_report_abs(dev, ABS_MT_POSITION_Y,
>  					 priv->y_max - clamped_y);
> +			input_report_abs(dev, ABS_TOOL_WIDTH, state->width);
>  		}
>  	}
>  	input_mt_report_pointer_emulation(dev, true);
> @@ -187,6 +198,7 @@ static void focaltech_process_abs_packet(struct psmouse *psmouse,
>  
>  	state->fingers[finger].x = ((packet[1] & 0xf) << 8) | packet[2];
>  	state->fingers[finger].y = (packet[3] << 8) | packet[4];
> +	state->width = packet[5] >> 4;
>  	state->fingers[finger].valid = true;
>  }
>  
> @@ -331,6 +343,7 @@ static void focaltech_set_input_params(struct psmouse *psmouse)
>  	__set_bit(EV_ABS, dev->evbit);
>  	input_set_abs_params(dev, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);
>  	input_set_abs_params(dev, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);
> +	input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
>  	input_mt_init_slots(dev, 5, INPUT_MT_POINTER);
>  	__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
>  }
> -- 
> 1.9.1
> 

-- 
Dmitry