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Release 4.11 drivers/input/mouse/alps.c

/*
 * ALPS touchpad PS/2 mouse driver
 *
 * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au>
 * Copyright (c) 2003-2005 Peter Osterlund <petero2@telia.com>
 * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru>
 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
 * Copyright (c) 2009 Sebastian Kapfer <sebastian_kapfer@gmx.net>
 *
 * ALPS detection, tap switching and status querying info is taken from
 * tpconfig utility (by C. Scott Ananian and Bruce Kall).
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 */

#include <linux/slab.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/dmi.h>

#include "psmouse.h"
#include "alps.h"

/*
 * Definitions for ALPS version 3 and 4 command mode protocol
 */

#define ALPS_CMD_NIBBLE_10	0x01f2


#define ALPS_REG_BASE_RUSHMORE	0xc2c0

#define ALPS_REG_BASE_V7	0xc2c0

#define ALPS_REG_BASE_PINNACLE	0x0000


static const struct alps_nibble_commands alps_v3_nibble_commands[] = {
	{ PSMOUSE_CMD_SETPOLL,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};


static const struct alps_nibble_commands alps_v4_nibble_commands[] = {
	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_RESET_DIS,	0x00 }, /* 1 */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 7 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 8 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 9 */
	{ ALPS_CMD_NIBBLE_10,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* d */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};


static const struct alps_nibble_commands alps_v6_nibble_commands[] = {
	{ PSMOUSE_CMD_ENABLE,		0x00 }, /* 0 */
	{ PSMOUSE_CMD_SETRATE,		0x0a }, /* 1 */
	{ PSMOUSE_CMD_SETRATE,		0x14 }, /* 2 */
	{ PSMOUSE_CMD_SETRATE,		0x28 }, /* 3 */
	{ PSMOUSE_CMD_SETRATE,		0x3c }, /* 4 */
	{ PSMOUSE_CMD_SETRATE,		0x50 }, /* 5 */
	{ PSMOUSE_CMD_SETRATE,		0x64 }, /* 6 */
	{ PSMOUSE_CMD_SETRATE,		0xc8 }, /* 7 */
	{ PSMOUSE_CMD_GETID,		0x00 }, /* 8 */
	{ PSMOUSE_CMD_GETINFO,		0x00 }, /* 9 */
	{ PSMOUSE_CMD_SETRES,		0x00 }, /* a */
	{ PSMOUSE_CMD_SETRES,		0x01 }, /* b */
	{ PSMOUSE_CMD_SETRES,		0x02 }, /* c */
	{ PSMOUSE_CMD_SETRES,		0x03 }, /* d */
	{ PSMOUSE_CMD_SETSCALE21,	0x00 }, /* e */
	{ PSMOUSE_CMD_SETSCALE11,	0x00 }, /* f */
};



#define ALPS_DUALPOINT		0x02	
/* touchpad has trackstick */

#define ALPS_PASS		0x04	
/* device has a pass-through port */


#define ALPS_WHEEL		0x08	
/* hardware wheel present */

#define ALPS_FW_BK_1		0x10	
/* front & back buttons present */

#define ALPS_FW_BK_2		0x20	
/* front & back buttons present */

#define ALPS_FOUR_BUTTONS	0x40	
/* 4 direction button present */

#define ALPS_PS2_INTERLEAVED	0x80	
/* 3-byte PS/2 packet interleaved with
                                           6-byte ALPS packet */

#define ALPS_STICK_BITS		0x100	
/* separate stick button bits */

#define ALPS_BUTTONPAD		0x200	
/* device is a clickpad */

#define ALPS_DUALPOINT_WITH_PRESSURE	0x400	
/* device can report trackpoint pressure */


static const struct alps_model_info alps_model_data[] = {
	{ { 0x32, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },	/* Toshiba Salellite Pro M10 */
	{ { 0x33, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } },				/* UMAX-530T */
	{ { 0x53, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x53, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x60, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },				/* HP ze1115 */
	{ { 0x63, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x02, 0x28 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } },		/* Fujitsu Siemens S6010 */
	{ { 0x63, 0x02, 0x3c }, 0x00, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } },		/* Toshiba Satellite S2400-103 */
	{ { 0x63, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } },		/* NEC Versa L320 */
	{ { 0x63, 0x02, 0x64 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x63, 0x03, 0xc8 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },	/* Dell Latitude D800 */
	{ { 0x73, 0x00, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } },		/* ThinkPad R61 8918-5QG */
	{ { 0x73, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } },
	{ { 0x73, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } },		/* Ahtec Laptop */

	/*
         * XXX This entry is suspicious. First byte has zero lower nibble,
         * which is what a normal mouse would report. Also, the value 0x0e
         * isn't valid per PS/2 spec.
         */
	{ { 0x20, 0x02, 0x0e }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },

	{ { 0x22, 0x02, 0x0a }, 0x00, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } },
	{ { 0x22, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } },	/* Dell Latitude D600 */
	/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
	{ { 0x62, 0x02, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf,
		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },
	{ { 0x73, 0x00, 0x14 }, 0x00, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } },		/* Dell XT2 */
	{ { 0x73, 0x02, 0x50 }, 0x00, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } },	/* Dell Vostro 1400 */
	{ { 0x52, 0x01, 0x14 }, 0x00, { ALPS_PROTO_V2, 0xff, 0xff,
		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } },				/* Toshiba Tecra A11-11L */
	{ { 0x73, 0x02, 0x64 }, 0x8a, { ALPS_PROTO_V4, 0x8f, 0x8f, 0 } },
};


static const struct alps_protocol_info alps_v3_protocol_data = {
	ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT
};


static const struct alps_protocol_info alps_v3_rushmore_data = {
	ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT
};


static const struct alps_protocol_info alps_v5_protocol_data = {
	ALPS_PROTO_V5, 0xc8, 0xd8, 0
};


static const struct alps_protocol_info alps_v7_protocol_data = {
	ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT
};


static const struct alps_protocol_info alps_v8_protocol_data = {
	ALPS_PROTO_V8, 0x18, 0x18, 0
};

/*
 * Some v2 models report the stick buttons in separate bits
 */

static const struct dmi_system_id alps_dmi_has_separate_stick_buttons[] = {
#if defined(CONFIG_DMI) && defined(CONFIG_X86)
	{
		/* Extrapolated from other entries */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D420"),
                },
        },
	{
		/* Reported-by: Hans de Bruin <jmdebruin@xmsnet.nl> */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D430"),
                },
        },
	{
		/* Reported-by: Hans de Goede <hdegoede@redhat.com> */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D620"),
                },
        },
	{
		/* Extrapolated from other entries */
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D630"),
                },
        },
#endif
	{ }
};

static void alps_set_abs_params_st(struct alps_data *priv,
				   struct input_dev *dev1);
static void alps_set_abs_params_semi_mt(struct alps_data *priv,
					struct input_dev *dev1);
static void alps_set_abs_params_v7(struct alps_data *priv,
				   struct input_dev *dev1);
static void alps_set_abs_params_ss4_v2(struct alps_data *priv,
				       struct input_dev *dev1);

/* Packet formats are described in Documentation/input/alps.txt */


static bool alps_is_valid_first_byte(struct alps_data *priv, unsigned char data) { return (data & priv->mask0) == priv->byte0; }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Kapfer2485.71%150.00%
Kevin Cernekee414.29%150.00%
Total28100.00%2100.00%


static void alps_report_buttons(struct input_dev *dev1, struct input_dev *dev2, int left, int right, int middle) { struct input_dev *dev; /* * If shared button has already been reported on the * other device (dev2) then this event should be also * sent through that device. */ dev = (dev2 && test_bit(BTN_LEFT, dev2->key)) ? dev2 : dev1; input_report_key(dev, BTN_LEFT, left); dev = (dev2 && test_bit(BTN_RIGHT, dev2->key)) ? dev2 : dev1; input_report_key(dev, BTN_RIGHT, right); dev = (dev2 && test_bit(BTN_MIDDLE, dev2->key)) ? dev2 : dev1; input_report_key(dev, BTN_MIDDLE, middle); /* * Sync the _other_ device now, we'll do the first * device later once we report the rest of the events. */ if (dev2) input_sync(dev2); }

Contributors

PersonTokensPropCommitsCommitProp
Sebastian Kapfer10785.60%133.33%
Pali Rohár1612.80%133.33%
Martin Buck21.60%133.33%
Total125100.00%3100.00%


static void alps_process_packet_v1_v2(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char *packet = psmouse->packet; struct input_dev *dev = psmouse->dev; struct input_dev *dev2 = priv->dev2; int x, y, z, ges, fin, left, right, middle; int back = 0, forward = 0; if (priv->proto_version == ALPS_PROTO_V1) { left = packet[2] & 0x10; right = packet[2] & 0x08; middle = 0; x = packet[1] | ((packet[0] & 0x07) << 7); y = packet[4] | ((packet[3] & 0x07) << 7); z = packet[5]; } else { left = packet[3] & 1; right = packet[3] & 2; middle = packet[3] & 4; x = packet[1] | ((packet[2] & 0x78) << (7 - 3)); y = packet[4] | ((packet[3] & 0x70) << (7 - 4)); z = packet[5]; } if (priv->flags & ALPS_FW_BK_1) { back = packet[0] & 0x10; forward = packet[2] & 4; } if (priv->flags & ALPS_FW_BK_2) { back = packet[3] & 4; forward = packet[2] & 4; if ((middle = forward && back)) forward = back = 0; } ges = packet[2] & 1; fin = packet[2] & 2; if ((priv->flags & ALPS_DUALPOINT) && z == 127) { input_report_rel(dev2, REL_X, (x > 383 ? (x - 768) : x)); input_report_rel(dev2, REL_Y, -(y > 255 ? (y - 512) : y)); alps_report_buttons(dev2, dev, left, right, middle); input_sync(dev2); return; } /* Some models have separate stick button bits */ if (priv->flags & ALPS_STICK_BITS) { left |= packet[0] & 1; right |= packet[0] & 2; middle |= packet[0] & 4; } alps_report_buttons(dev, dev2, left, right, middle); /* Convert hardware tap to a reasonable Z value */ if (ges && !fin) z = 40; /* * A "tap and drag" operation is reported by the hardware as a transition * from (!fin && ges) to (fin && ges). This should be translated to the * sequence Z>0, Z==0, Z>0, so the Z==0 event has to be generated manually. */ if (ges && fin && !priv->prev_fin) { input_report_abs(dev, ABS_X, x); input_report_abs(dev, ABS_Y, y); input_report_abs(dev, ABS_PRESSURE, 0); input_report_key(dev, BTN_TOOL_FINGER, 0); input_sync(dev); } priv->prev_fin = fin; if (z > 30) input_report_key(dev, BTN_TOUCH, 1); if (z < 25) input_report_key(dev, BTN_TOUCH, 0); if (z > 0) { input_report_abs(dev, ABS_X, x); input_report_abs(dev, ABS_Y, y); } input_report_abs(dev, ABS_PRESSURE, z); input_report_key(dev, BTN_TOOL_FINGER, z > 0); if (priv->flags & ALPS_WHEEL) input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { input_report_key(dev, BTN_FORWARD, forward); input_report_key(dev, BTN_BACK, back); } if (priv->flags & ALPS_FOUR_BUTTONS) { input_report_key(dev, BTN_0, packet[2] & 4); input_report_key(dev, BTN_1, packet[0] & 0x10); input_report_key(dev, BTN_2, packet[3] & 4); input_report_key(dev, BTN_3, packet[0] & 0x20); } input_sync(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Peter Osterlund31742.32%213.33%
Vojtech Pavlik16221.63%426.67%
Sebastian Kapfer12016.02%16.67%
Ivan Casado Ruiz7510.01%16.67%
Hans de Goede385.07%213.33%
Ulrich Dangel222.94%16.67%
Kevin Cernekee70.93%16.67%
Laszlo Kajan40.53%16.67%
Seth Forshee40.53%213.33%
Total749100.00%15100.00%


static void alps_get_bitmap_points(unsigned int map, struct alps_bitmap_point *low, struct alps_bitmap_point *high, int *fingers) { struct alps_bitmap_point *point; int i, bit, prev_bit = 0; point = low; for (i = 0; map != 0; i++, map >>= 1) { bit = map & 1; if (bit) { if (!prev_bit) { point->start_bit = i; point->num_bits = 0; (*fingers)++; } point->num_bits++; } else { if (prev_bit) point = high; } prev_bit = bit; } }

Contributors

PersonTokensPropCommitsCommitProp
Hans de Goede118100.00%2100.00%
Total118100.00%2100.00%

/* * Process bitmap data from semi-mt protocols. Returns the number of * fingers detected. A return value of 0 means at least one of the * bitmaps was empty. * * The bitmaps don't have enough data to track fingers, so this function * only generates points representing a bounding box of all contacts. * These points are returned in fields->mt when the return value * is greater than 0. */
static int alps_process_bitmap(struct alps_data *priv, struct alps_fields *fields) { int i, fingers_x = 0, fingers_y = 0, fingers, closest; struct alps_bitmap_point x_low = {0,}, x_high = {0,}; struct alps_bitmap_point y_low = {0,}, y_high = {0,}; struct input_mt_pos corner[4]; if (!fields->x_map || !fields->y_map) return 0; alps_get_bitmap_points(fields->x_map, &x_low, &x_high, &fingers_x); alps_get_bitmap_points(fields->y_map, &y_low, &y_high, &fingers_y); /* * Fingers can overlap, so we use the maximum count of fingers * on either axis as the finger count. */ fingers = max(fingers_x, fingers_y); /* * If an axis reports only a single contact, we have overlapping or * adjacent fingers. Divide the single contact between the two points. */ if (fingers_x == 1) { i = (x_low.num_bits - 1) / 2; x_low.num_bits = x_low.num_bits - i; x_high.start_bit = x_low.start_bit + i; x_high.num_bits = max(i, 1); } if (fingers_y == 1) { i = (y_low.num_bits - 1) / 2; y_low.num_bits = y_low.num_bits - i; y_high.start_bit = y_low.start_bit + i; y_high.num_bits = max(i, 1); } /* top-left corner */ corner[0].x = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / (2 * (priv->x_bits - 1)); corner[0].y = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / (2 * (priv->y_bits - 1)); /* top-right corner */ corner[1].x = (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / (2 * (priv->x_bits - 1)); corner[1].y = (priv->y_max * (2 * y_low.start_bit + y_low.num_bits - 1)) / (2 * (priv->y_bits - 1)); /* bottom-right corner */ corner[2].x = (priv->x_max * (2 * x_high.start_bit + x_high.num_bits - 1)) / (2 * (priv->x_bits - 1)); corner[2].y = (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / (2 * (priv->y_bits - 1)); /* bottom-left corner */ corner[3]