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Commit 1ef85805 authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: psmouse - create helper for reporting standard buttons/motion 



Many protocol driver re-implement code to parse buttons or motion data from
the standard PS/2 protocol. Let's split the parsing into separate
functions and reuse them in protocol drivers.

Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent d8a5b805

drivers/input/mouse/alps.c

+7 −23
Original line number Diff line number Diff line
@@ -827,7 +827,7 @@ static void alps_process_packet_v6(struct psmouse *psmouse) 
	unsigned char *packet = psmouse->packet;

	struct input_dev *dev = psmouse->dev;

	struct input_dev *dev2 = priv->dev2;

	int x, y, z, left, right, middle;

	int x, y, z;



	/*

	 * We can use Byte5 to distinguish if the packet is from Touchpad
@@ -847,9 +847,6 @@ static void alps_process_packet_v6(struct psmouse *psmouse) 
		x = packet[1] | ((packet[3] & 0x20) << 2);

		y = packet[2] | ((packet[3] & 0x40) << 1);

		z = packet[4];

		left = packet[3] & 0x01;

		right = packet[3] & 0x02;

		middle = packet[3] & 0x04;



		/* To prevent the cursor jump when finger lifted */

		if (x == 0x7F && y == 0x7F && z == 0x7F)
@@ -859,9 +856,7 @@ static void alps_process_packet_v6(struct psmouse *psmouse) 
		input_report_rel(dev2, REL_X, (char)x / 4);

		input_report_rel(dev2, REL_Y, -((char)y / 4));



		input_report_key(dev2, BTN_LEFT, left);

		input_report_key(dev2, BTN_RIGHT, right);

		input_report_key(dev2, BTN_MIDDLE, middle);

		psmouse_report_standard_buttons(dev2, packet[3]);



		input_sync(dev2);

		return;
@@ -871,8 +866,6 @@ static void alps_process_packet_v6(struct psmouse *psmouse) 
	x = packet[1] | ((packet[3] & 0x78) << 4);

	y = packet[2] | ((packet[4] & 0x78) << 4);

	z = packet[5];

	left = packet[3] & 0x01;

	right = packet[3] & 0x02;



	if (z > 30)

		input_report_key(dev, BTN_TOUCH, 1);
@@ -888,8 +881,8 @@ static void alps_process_packet_v6(struct psmouse *psmouse) 
	input_report_key(dev, BTN_TOOL_FINGER, z > 0);



	/* v6 touchpad does not have middle button */

	input_report_key(dev, BTN_LEFT, left);

	input_report_key(dev, BTN_RIGHT, right);

	packet[3] &= ~BIT(2);

	psmouse_report_standard_buttons(dev2, packet[3]);



	input_sync(dev);

}
@@ -1098,7 +1091,7 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 
	struct alps_data *priv = psmouse->private;

	unsigned char *packet = psmouse->packet;

	struct input_dev *dev2 = priv->dev2;

	int x, y, z, left, right, middle;

	int x, y, z;



	/* It should be a DualPoint when received trackstick packet */

	if (!(priv->flags & ALPS_DUALPOINT)) {
@@ -1112,16 +1105,10 @@ static void alps_process_trackstick_packet_v7(struct psmouse *psmouse) 
	    ((packet[3] & 0x20) << 1);

	z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1);



	left = (packet[1] & 0x01);

	right = (packet[1] & 0x02) >> 1;

	middle = (packet[1] & 0x04) >> 2;



	input_report_rel(dev2, REL_X, (char)x);

	input_report_rel(dev2, REL_Y, -((char)y));



	input_report_key(dev2, BTN_LEFT, left);

	input_report_key(dev2, BTN_RIGHT, right);

	input_report_key(dev2, BTN_MIDDLE, middle);

	psmouse_report_standard_buttons(dev2, packet[1]);



	input_sync(dev2);

}
@@ -1503,10 +1490,7 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse, 
		alps_report_buttons(dev, dev2,

				packet[0] & 1, packet[0] & 2, packet[0] & 4);



	input_report_rel(dev, REL_X,

		packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0);

	input_report_rel(dev, REL_Y,

		packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0);

	psmouse_report_standard_motion(dev, packet);



	input_sync(dev);

}

drivers/input/mouse/elantech.c

+10 −18
Original line number Diff line number Diff line
@@ -279,8 +279,8 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse) 
	input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);

	input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);

	input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);

	input_report_key(dev, BTN_LEFT, packet[0] & 0x01);

	input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);



	psmouse_report_standard_buttons(dev, packet[0]);



	if (etd->fw_version < 0x020000 &&

	    (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) {
@@ -390,8 +390,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) 
	input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);

	input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);

	input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);

	input_report_key(dev, BTN_LEFT, packet[0] & 0x01);

	input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);

	psmouse_report_standard_buttons(dev, packet[0]);

	if (etd->reports_pressure) {

		input_report_abs(dev, ABS_PRESSURE, pres);

		input_report_abs(dev, ABS_TOOL_WIDTH, width);
@@ -434,9 +433,7 @@ static void elantech_report_trackpoint(struct psmouse *psmouse, 
		x = packet[4] - (int)((packet[1]^0x80) << 1);

		y = (int)((packet[2]^0x80) << 1) - packet[5];



		input_report_key(tp_dev, BTN_LEFT, packet[0] & 0x01);

		input_report_key(tp_dev, BTN_RIGHT, packet[0] & 0x02);

		input_report_key(tp_dev, BTN_MIDDLE, packet[0] & 0x04);

		psmouse_report_standard_buttons(tp_dev, packet[0]);



		input_report_rel(tp_dev, REL_X, x);

		input_report_rel(tp_dev, REL_Y, y);
@@ -526,12 +523,10 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, 
	input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);



	/* For clickpads map both buttons to BTN_LEFT */

	if (etd->fw_version & 0x001000) {

	if (etd->fw_version & 0x001000)

		input_report_key(dev, BTN_LEFT, packet[0] & 0x03);

	} else {

		input_report_key(dev, BTN_LEFT, packet[0] & 0x01);

		input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);

	}

	else

		psmouse_report_standard_buttons(dev, packet[0]);



	input_report_abs(dev, ABS_PRESSURE, pres);

	input_report_abs(dev, ABS_TOOL_WIDTH, width);
@@ -546,13 +541,10 @@ static void elantech_input_sync_v4(struct psmouse *psmouse) 
	unsigned char *packet = psmouse->packet;



	/* For clickpads map both buttons to BTN_LEFT */

	if (etd->fw_version & 0x001000) {

	if (etd->fw_version & 0x001000)

		input_report_key(dev, BTN_LEFT, packet[0] & 0x03);

	} else {

		input_report_key(dev, BTN_LEFT, packet[0] & 0x01);

		input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);

		input_report_key(dev, BTN_MIDDLE, packet[0] & 0x04);

	}

	else

		psmouse_report_standard_buttons(dev, packet[0]);



	input_mt_report_pointer_emulation(dev, true);

	input_sync(dev);

drivers/input/mouse/lifebook.c

+4 −8
Original line number Diff line number Diff line
@@ -188,14 +188,10 @@ static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) 
	}



	if (dev2) {

		if (relative_packet) {

			input_report_rel(dev2, REL_X,

				((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));

			input_report_rel(dev2, REL_Y,

				 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));

		}

		input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);

		input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);

		if (relative_packet)

			psmouse_report_standard_motion(dev2, packet);



		psmouse_report_standard_buttons(dev2, packet[0]);

		input_sync(dev2);

	}

drivers/input/mouse/logips2pp.c

+4 −6
Original line number Diff line number Diff line
@@ -88,16 +88,14 @@ static psmouse_ret_t ps2pp_process_byte(struct psmouse *psmouse) 
				    (packet[1] >> 4) | (packet[0] & 0x30));

			break;

		}



		psmouse_report_standard_buttons(dev, packet[0]);



	} else {

		/* Standard PS/2 motion data */

		input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);

		input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);

		psmouse_report_standard_packet(dev, packet);

	}



	input_report_key(dev, BTN_LEFT,    packet[0]       & 1);

	input_report_key(dev, BTN_MIDDLE, (packet[0] >> 2) & 1);

	input_report_key(dev, BTN_RIGHT,  (packet[0] >> 1) & 1);



	input_sync(dev);



	return PSMOUSE_FULL_PACKET;

drivers/input/mouse/psmouse-base.c

+20 −6
Original line number Diff line number Diff line
@@ -116,13 +116,30 @@ static DEFINE_MUTEX(psmouse_mutex); 


static struct workqueue_struct *kpsmoused_wq;



static void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons)

void psmouse_report_standard_buttons(struct input_dev *dev, u8 buttons)

{

	input_report_key(dev, BTN_LEFT,   buttons & BIT(0));

	input_report_key(dev, BTN_MIDDLE, buttons & BIT(2));

	input_report_key(dev, BTN_RIGHT,  buttons & BIT(1));

}



void psmouse_report_standard_motion(struct input_dev *dev, u8 *packet)

{

	int x, y;



	x = packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0;

	y = packet[2] ? packet[2] - ((packet[0] << 3) & 0x100) : 0;



	input_report_rel(dev, REL_X, x);

	input_report_rel(dev, REL_Y, -y);

}



void psmouse_report_standard_packet(struct input_dev *dev, u8 *packet)

{

	psmouse_report_standard_buttons(dev, packet[0]);

	psmouse_report_standard_motion(dev, packet);

}



/*

 * psmouse_process_byte() analyzes the PS/2 data stream and reports

 * relevant events to the input module once full packet has arrived.
@@ -195,11 +212,8 @@ psmouse_ret_t psmouse_process_byte(struct psmouse *psmouse) 
	}



	/* Generic PS/2 Mouse */

	psmouse_report_standard_buttons(dev,

					packet[0] | psmouse->extra_buttons);



	input_report_rel(dev, REL_X, packet[1] ? (int) packet[1] - (int) ((packet[0] << 4) & 0x100) : 0);

	input_report_rel(dev, REL_Y, packet[2] ? (int) ((packet[0] << 3) & 0x100) - (int) packet[2] : 0);

	packet[0] |= psmouse->extra_buttons;

	psmouse_report_standard_packet(dev, packet);



	input_sync(dev);