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Commit 7a9f73e7 authored by Kevin Cernekee's avatar Kevin Cernekee Committed by Dmitry Torokhov
Browse files

Input: ALPS - move pixel and bitmap info into alps_data struct 



Newer touchpads use different constants, so make them runtime-
configurable.

Signed-off-by: default avatarKevin Cernekee <cernekee@gmail.com>
Tested-by: default avatarDave Turvene <dturvene@dahetral.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 56fd340e

drivers/input/mouse/alps.c

+25 −22
Original line number Diff line number Diff line
@@ -27,12 +27,6 @@ 
/*

 * Definitions for ALPS version 3 and 4 command mode protocol

 */

#define ALPS_V3_X_MAX	2000

#define ALPS_V3_Y_MAX	1400



#define ALPS_BITMAP_X_BITS	15

#define ALPS_BITMAP_Y_BITS	11



#define ALPS_CMD_NIBBLE_10	0x01f2



static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
@@ -269,7 +263,8 @@ static void alps_process_packet_v1_v2(struct psmouse *psmouse) 
 * These points are returned in x1, y1, x2, and y2 when the return value

 * is greater than 0.

 */

static int alps_process_bitmap(unsigned int x_map, unsigned int y_map,

static int alps_process_bitmap(struct alps_data *priv,

			       unsigned int x_map, unsigned int y_map,

			       int *x1, int *y1, int *x2, int *y2)

{

	struct alps_bitmap_point {
@@ -311,7 +306,7 @@ static int alps_process_bitmap(unsigned int x_map, unsigned int y_map, 
	 * y bitmap is reversed for what we need (lower positions are in

	 * higher bits), so we process from the top end.

	 */

	y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - ALPS_BITMAP_Y_BITS);

	y_map = y_map << (sizeof(y_map) * BITS_PER_BYTE - priv->y_bits);

	prev_bit = 0;

	point = &y_low;

	for (i = 0; y_map != 0; i++, y_map <<= 1) {
@@ -357,16 +352,18 @@ static int alps_process_bitmap(unsigned int x_map, unsigned int y_map, 
		}

	}



	*x1 = (ALPS_V3_X_MAX * (2 * x_low.start_bit + x_low.num_bits - 1)) /

	      (2 * (ALPS_BITMAP_X_BITS - 1));

	*y1 = (ALPS_V3_Y_MAX * (2 * y_low.start_bit + y_low.num_bits - 1)) /

	      (2 * (ALPS_BITMAP_Y_BITS - 1));

	*x1 = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) /

	      (2 * (priv->x_bits - 1));

	*y1 = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) /

	      (2 * (priv->y_bits - 1));



	if (fingers > 1) {

		*x2 = (ALPS_V3_X_MAX * (2 * x_high.start_bit + x_high.num_bits - 1)) /

		      (2 * (ALPS_BITMAP_X_BITS - 1));

		*y2 = (ALPS_V3_Y_MAX * (2 * y_high.start_bit + y_high.num_bits - 1)) /

		      (2 * (ALPS_BITMAP_Y_BITS - 1));

		*x2 = (priv->x_max *

		       (2 * x_high.start_bit + x_high.num_bits - 1)) /

		      (2 * (priv->x_bits - 1));

		*y2 = (priv->y_max *

		       (2 * y_high.start_bit + y_high.num_bits - 1)) /

		      (2 * (priv->y_bits - 1));

	}



	return fingers;
@@ -484,7 +481,8 @@ static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) 
				   ((packet[2] & 0x7f) << 1) |

				   (packet[4] & 0x01);



			bmap_fingers = alps_process_bitmap(x_bitmap, y_bitmap,

			bmap_fingers = alps_process_bitmap(priv,

							   x_bitmap, y_bitmap,

							   &x1, &y1, &x2, &y2);



			/*
@@ -641,7 +639,7 @@ static void alps_process_packet_v4(struct psmouse *psmouse) 
			   ((priv->multi_data[3] & 0x1f) << 5) |

			    (priv->multi_data[1] & 0x1f);



		fingers = alps_process_bitmap(x_bitmap, y_bitmap,

		fingers = alps_process_bitmap(priv, x_bitmap, y_bitmap,

					      &x1, &y1, &x2, &y2);



		/* Store MT data.*/
@@ -1414,6 +1412,11 @@ static void alps_set_defaults(struct alps_data *priv) 
	priv->mask0 = 0x8f;

	priv->flags = ALPS_DUALPOINT;



	priv->x_max = 2000;

	priv->y_max = 1400;

	priv->x_bits = 15;

	priv->y_bits = 11;



	switch (priv->proto_version) {

	case ALPS_PROTO_V1:

	case ALPS_PROTO_V2:
@@ -1544,15 +1547,15 @@ static void alps_set_abs_params_mt(struct alps_data *priv, 
{

	set_bit(INPUT_PROP_SEMI_MT, dev1->propbit);

	input_mt_init_slots(dev1, 2, 0);

	input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, ALPS_V3_X_MAX, 0, 0);

	input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, ALPS_V3_Y_MAX, 0, 0);

	input_set_abs_params(dev1, ABS_MT_POSITION_X, 0, priv->x_max, 0, 0);

	input_set_abs_params(dev1, ABS_MT_POSITION_Y, 0, priv->y_max, 0, 0);



	set_bit(BTN_TOOL_DOUBLETAP, dev1->keybit);

	set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit);

	set_bit(BTN_TOOL_QUADTAP, dev1->keybit);



	input_set_abs_params(dev1, ABS_X, 0, ALPS_V3_X_MAX, 0, 0);

	input_set_abs_params(dev1, ABS_Y, 0, ALPS_V3_Y_MAX, 0, 0);

	input_set_abs_params(dev1, ABS_X, 0, priv->x_max, 0, 0);

	input_set_abs_params(dev1, ABS_Y, 0, priv->y_max, 0, 0);

}



int alps_init(struct psmouse *psmouse)

drivers/input/mouse/alps.h

+8 −0
Original line number Diff line number Diff line
@@ -72,6 +72,10 @@ struct alps_nibble_commands { 
 *   mask0, should match byte0.

 * @mask0: The mask used to check the first byte of the report.

 * @flags: Additional device capabilities (passthrough port, trackstick, etc.).

 * @x_max: Largest possible X position value.

 * @y_max: Largest possible Y position value.

 * @x_bits: Number of X bits in the MT bitmap.

 * @y_bits: Number of Y bits in the MT bitmap.

 * @hw_init: Protocol-specific hardware init function.

 * @process_packet: Protocol-specific function to process a report packet.

 * @set_abs_params: Protocol-specific function to configure the input_dev.
@@ -96,6 +100,10 @@ struct alps_data { 
	unsigned char proto_version;

	unsigned char byte0, mask0;

	unsigned char flags;

	int x_max;

	int y_max;

	int x_bits;

	int y_bits;



	int (*hw_init)(struct psmouse *psmouse);

	void (*process_packet)(struct psmouse *psmouse);