// SPDX-License-Identifier: GPL-2.0-only/* * 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). */ #include "linux/workqueue.h"#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"#include "trackpoint.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[] = { /* * 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 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */}; static const struct alps_protocol_info alps_v3_protocol_data = { ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE}; static const struct alps_protocol_info alps_v3_rushmore_data = { ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE}; static const struct alps_protocol_info alps_v4_protocol_data = { ALPS_PROTO_V4, 0x8f, 0x8f, 0}; 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 | ALPS_DUALPOINT_WITH_PRESSURE}; static const struct alps_protocol_info alps_v8_protocol_data = { ALPS_PROTO_V8, 0x18, 0x18, 0}; static const struct alps_protocol_info alps_v9_protocol_data = { ALPS_PROTO_V9, 0xc8, 0xc8, 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/devices/alps.rst */ static bool alps_is_valid_first_byte(struct alps_data *priv, unsigned char data){ return (data & priv->mask0) == priv->byte0;} 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);} 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);} 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; }} /* * 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].x = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / (2 * (priv->x_bits - 1)); corner[3].y = (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / (2 * (priv->y_bits - 1)); /* x-bitmap order is reversed on v5 touchpads */ if (priv->proto_version == ALPS_PROTO_V5) { for (i = 0; i < 4; i++) corner[i].x = priv->x_max - corner[i].x; } /* y-bitmap order is reversed on v3 and v4 touchpads */ if (priv->proto_version == ALPS_PROTO_V3 || priv->proto_version == ALPS_PROTO_V4) { for (i = 0; i < 4; i++) corner[i].y = priv->y_max - corner[i].y; } /* * We only select a corner for the second touch once per 2 finger * touch sequence to avoid the chosen corner (and thus the coordinates) * jumping around when the first touch is in the middle. */ if (priv->second_touch == -1) { /* Find corner closest to our st coordinates */ closest = 0x7fffffff; for (i = 0; i < 4; i++) { int dx = fields->st.x - corner[i].x; int dy = fields->st.y - corner[i].y; int distance = dx * dx + dy * dy; if (distance < closest) { priv->second_touch = i; closest = distance; } } /* And select the opposite corner to use for the 2nd touch */ priv->second_touch = (priv->second_touch + 2) % 4; } fields->mt[0] = fields->st; fields->mt[1] = corner[priv->second_touch]; return fingers;Lines 1–500 of 3236. 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// SPDX-License-Identifier: GPL-2.0-only /* * 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). */ #include "linux/workqueue.h" #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" #include "trackpoint.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[] = { /* * 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 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, { { 0x22, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, { { 0x22, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D600 */ { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba Salellite Pro M10 */ { { 0x33, 0x02, 0x0a }, { ALPS_PROTO_V1, 0x88, 0xf8, 0 } }, /* UMAX-530T */ { { 0x52, 0x01, 0x14 }, { ALPS_PROTO_V2, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Toshiba Tecra A11-11L */ { { 0x53, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x53, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x60, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, /* HP ze1115 */ { { 0x62, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED } }, /* Dell Latitude E5500, E6400, E6500, Precision M4400 */ { { 0x63, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x02, 0x28 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Fujitsu Siemens S6010 */ { { 0x63, 0x02, 0x3c }, { ALPS_PROTO_V2, 0x8f, 0x8f, ALPS_WHEEL } }, /* Toshiba Satellite S2400-103 */ { { 0x63, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xef, 0xef, ALPS_FW_BK_1 } }, /* NEC Versa L320 */ { { 0x63, 0x02, 0x64 }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x63, 0x03, 0xc8 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Dell Latitude D800 */ { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5QG */ { { 0x73, 0x00, 0x14 }, { ALPS_PROTO_V6, 0xff, 0xff, ALPS_DUALPOINT } }, /* Dell XT2 */ { { 0x73, 0x02, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, 0 } }, { { 0x73, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_FW_BK_2 } }, /* Ahtec Laptop */ { { 0x73, 0x02, 0x50 }, { ALPS_PROTO_V2, 0xcf, 0xcf, ALPS_FOUR_BUTTONS } }, /* Dell Vostro 1400 */ }; static const struct alps_protocol_info alps_v3_protocol_data = { ALPS_PROTO_V3, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE }; static const struct alps_protocol_info alps_v3_rushmore_data = { ALPS_PROTO_V3_RUSHMORE, 0x8f, 0x8f, ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE }; static const struct alps_protocol_info alps_v4_protocol_data = { ALPS_PROTO_V4, 0x8f, 0x8f, 0 }; 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 | ALPS_DUALPOINT_WITH_PRESSURE }; static const struct alps_protocol_info alps_v8_protocol_data = { ALPS_PROTO_V8, 0x18, 0x18, 0 }; static const struct alps_protocol_info alps_v9_protocol_data = { ALPS_PROTO_V9, 0xc8, 0xc8, 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/devices/alps.rst */ static bool alps_is_valid_first_byte(struct alps_data *priv, unsigned char data) { return (data & priv->mask0) == priv->byte0; } 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); } 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); } 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; } } /* * 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].x = (priv->x_max * (2 * x_low.start_bit + x_low.num_bits - 1)) / (2 * (priv->x_bits - 1)); corner[3].y = (priv->y_max * (2 * y_high.start_bit + y_high.num_bits - 1)) / (2 * (priv->y_bits - 1)); /* x-bitmap order is reversed on v5 touchpads */ if (priv->proto_version == ALPS_PROTO_V5) { for (i = 0; i < 4; i++) corner[i].x = priv->x_max - corner[i].x; } /* y-bitmap order is reversed on v3 and v4 touchpads */ if (priv->proto_version == ALPS_PROTO_V3 || priv->proto_version == ALPS_PROTO_V4) { for (i = 0; i < 4; i++) corner[i].y = priv->y_max - corner[i].y; } /* * We only select a corner for the second touch once per 2 finger * touch sequence to avoid the chosen corner (and thus the coordinates) * jumping around when the first touch is in the middle. */ if (priv->second_touch == -1) { /* Find corner closest to our st coordinates */ closest = 0x7fffffff; for (i = 0; i < 4; i++) { int dx = fields->st.x - corner[i].x; int dy = fields->st.y - corner[i].y; int distance = dx * dx + dy * dy; if (distance < closest) { priv->second_touch = i; closest = distance; } } /* And select the opposite corner to use for the 2nd touch */ priv->second_touch = (priv->second_touch + 2) % 4; } fields->mt[0] = fields->st; fields->mt[1] = corner[priv->second_touch]; return fingers;