| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Linux/drivers/input/mouse/ (Linux Kernel Version 6.17.9©) Datei vom 24.10.2025 mit Größe 86 kB |
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Quelle alps.c Sprache: C |
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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/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 Lati { { 0x32, 0x02, 0x14 }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT } }, /* Toshiba S { { 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, { { 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- { { 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 Lati { { 0x73, 0x00, 0x0a }, { ALPS_PROTO_V2, 0xf8, 0xf8, ALPS_DUALPOINT } }, /* ThinkPad R61 8918-5Q { { 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; } static void alps_set_slot(struct input_dev *dev, int slot, int x, int y) { input_mt_slot(dev, slot); input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); input_report_abs(dev, ABS_MT_POSITION_X, x); input_report_abs(dev, ABS_MT_POSITION_Y, y); } static void alps_report_mt_data(struct psmouse *psmouse, int n) { struct alps_data *priv = psmouse->private; struct input_dev *dev = psmouse->dev; struct alps_fields *f = &priv->f; int i, slot[MAX_TOUCHES]; input_mt_assign_slots(dev, slot, f->mt, n, 0); for (i = 0; i < n; i++) alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y); input_mt_sync_frame(dev); } static void alps_report_semi_mt_data(struct psmouse *psmouse, int fingers) { struct alps_data *priv = psmouse->private; struct input_dev *dev = psmouse->dev; struct alps_fields *f = &priv->f; /* Use st data when we don't have mt data */ if (fingers < 2) { f->mt[0].x = f->st.x; f->mt[0].y = f->st.y; fingers = f->pressure > 0 ? 1 : 0; priv->second_touch = -1; } if (fingers >= 1) alps_set_slot(dev, 0, f->mt[0].x, f->mt[0].y); if (fingers >= 2) alps_set_slot(dev, 1, f->mt[1].x, f->mt[1].y); input_mt_sync_frame(dev); input_mt_report_finger_count(dev, fingers); input_report_key(dev, BTN_LEFT, f->left); input_report_key(dev, BTN_RIGHT, f->right); input_report_key(dev, BTN_MIDDLE, f->middle); input_report_abs(dev, ABS_PRESSURE, f->pressure); input_sync(dev); } static void alps_process_trackstick_packet_v3(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char *packet = psmouse->packet; struct input_dev *dev = priv->dev2; int x, y, z, left, right, middle; /* It should be a DualPoint when received trackstick packet */ if (!(priv->flags & ALPS_DUALPOINT)) { psmouse_warn(psmouse, "Rejected trackstick packet from non DualPoint device"); return; } /* Sanity check packet */ if (!(packet[0] & 0x40)) { psmouse_dbg(psmouse, "Bad trackstick packet, discarding\n"); return; } /* * There's a special packet that seems to indicate the end * of a stream of trackstick data. Filter these out. */ if (packet[1] == 0x7f && packet[2] == 0x7f && packet[4] == 0x7f) return; x = (s8)(((packet[0] & 0x20) << 2) | (packet[1] & 0x7f)); y = (s8)(((packet[0] & 0x10) << 3) | (packet[2] & 0x7f)); z = packet[4] & 0x7f; /* * The x and y values tend to be quite large, and when used * alone the trackstick is difficult to use. Scale them down * to compensate. */ x /= 8; y /= 8; input_report_rel(dev, REL_X, x); input_report_rel(dev, REL_Y, -y); input_report_abs(dev, ABS_PRESSURE, z); /* * Most ALPS models report the trackstick buttons in the touchpad * packets, but a few report them here. No reliable way has been * found to differentiate between the models upfront, so we enable * the quirk in response to seeing a button press in the trackstick * packet. */ left = packet[3] & 0x01; right = packet[3] & 0x02; middle = packet[3] & 0x04; if (!(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) && (left || right || middle)) priv->quirks |= ALPS_QUIRK_TRACKSTICK_BUTTONS; if (priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS) { input_report_key(dev, BTN_LEFT, left); input_report_key(dev, BTN_RIGHT, right); input_report_key(dev, BTN_MIDDLE, middle); } input_sync(dev); return; } static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p) { f->left = !!(p[3] & 0x01); f->right = !!(p[3] & 0x02); f->middle = !!(p[3] & 0x04); f->ts_left = !!(p[3] & 0x10); f->ts_right = !!(p[3] & 0x20); f->ts_middle = !!(p[3] & 0x40); } static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { f->first_mp = !!(p[4] & 0x40); f->is_mp = !!(p[0] & 0x40); if (f->is_mp) { f->fingers = (p[5] & 0x3) + 1; f->x_map = ((p[4] & 0x7e) << 8) | ((p[1] & 0x7f) << 2) | ((p[0] & 0x30) >> 4); f->y_map = ((p[3] & 0x70) << 4) | ((p[2] & 0x7f) << 1) | (p[4] & 0x01); } else { f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | ((p[0] & 0x30) >> 4); f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); f->pressure = p[5] & 0x7f; alps_decode_buttons_v3(f, p); } return 0; } static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { f->first_mp = !!(p[4] & 0x40); f->is_mp = !!(p[5] & 0x40); if (f->is_mp) { f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1; f->x_map = ((p[5] & 0x10) << 11) | ((p[4] & 0x7e) << 8) | ((p[1] & 0x7f) << 2) | ((p[0] & 0x30) >> 4); f->y_map = ((p[5] & 0x20) << 6) | ((p[3] & 0x70) << 4) | ((p[2] & 0x7f) << 1) | (p[4] & 0x01); } else { f->st.x = ((p[1] & 0x7f) << 4) | ((p[4] & 0x30) >> 2) | ((p[0] & 0x30) >> 4); f->st.y = ((p[2] & 0x7f) << 4) | (p[4] & 0x0f); f->pressure = p[5] & 0x7f; alps_decode_buttons_v3(f, p); } return 0; } static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { u64 palm_data = 0; struct alps_data *priv = psmouse->private; f->first_mp = !!(p[0] & 0x02); f->is_mp = !!(p[0] & 0x20); if (!f->is_mp) { f->st.x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); f->st.y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); f->pressure = (p[0] & 4) ? 0 : p[5] & 0x7f; alps_decode_buttons_v3(f, p); } else { f->fingers = ((p[0] & 0x6) >> 1 | (p[0] & 0x10) >> 2); palm_data = (p[1] & 0x7f) | ((p[2] & 0x7f) << 7) | ((p[4] & 0x7f) << 14) | ((p[5] & 0x7f) << 21) | ((p[3] & 0x07) << 28) | (((u64)p[3] & 0x70) << 27) | (((u64)p[0] & 0x01) << 34); /* Y-profile is stored in P(0) to p(n-1), n = y_bits; */ f->y_map = palm_data & (BIT(priv->y_bits) - 1); /* X-profile is stored in p(n) to p(n+m-1), m = x_bits; */ f->x_map = (palm_data >> priv->y_bits) & (BIT(priv->x_bits) - 1); } return 0; } static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char *packet = psmouse->packet; struct input_dev *dev2 = priv->dev2; struct alps_fields *f = &priv->f; int fingers = 0; memset(f, 0, sizeof(*f)); priv->decode_fields(f, packet, psmouse); /* * There's no single feature of touchpad position and bitmap packets * that can be used to distinguish between them. We rely on the fact * that a bitmap packet should always follow a position packet with * bit 6 of packet[4] set. */ if (priv->multi_packet) { /* * Sometimes a position packet will indicate a multi-packet * sequence, but then what follows is another position * packet. Check for this, and when it happens process the * position packet as usual. */ if (f->is_mp) { fingers = f->fingers; /* * Bitmap processing uses position packet's coordinate * data, so we need to do decode it first. */ priv->decode_fields(f, priv->multi_data, psmouse); if (alps_process_bitmap(priv, f) == 0) fingers = 0; /* Use st data */ } else { priv->multi_packet = 0; } } /* * Bit 6 of byte 0 is not usually set in position packets. The only * times it seems to be set is in situations where the data is * suspect anyway, e.g. a palm resting flat on the touchpad. Given * this combined with the fact that this bit is useful for filtering * out misidentified bitmap packets, we reject anything with this * bit set. */ if (f->is_mp) return; if (!priv->multi_packet && f->first_mp) { priv->multi_packet = 1; memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); return; } priv->multi_packet = 0; /* * Sometimes the hardware sends a single packet with z = 0 * in the middle of a stream. Real releases generate packets * with x, y, and z all zero, so these seem to be flukes. * Ignore them. */ if (f->st.x && f->st.y && !f->pressure) return; alps_report_semi_mt_data(psmouse, fingers); if ((priv->flags & ALPS_DUALPOINT) && !(priv->quirks & ALPS_QUIRK_TRACKSTICK_BUTTONS)) { input_report_key(dev2, BTN_LEFT, f->ts_left); input_report_key(dev2, BTN_RIGHT, f->ts_right); input_report_key(dev2, BTN_MIDDLE, f->ts_middle); input_sync(dev2); } } static void alps_process_packet_v3(struct psmouse *psmouse) { unsigned char *packet = psmouse->packet; /* * v3 protocol packets come in three types, two representing * touchpad data and one representing trackstick data. * Trackstick packets seem to be distinguished by always * having 0x3f in the last byte. This value has never been * observed in the last byte of either of the other types * of packets. */ if (packet[5] == 0x3f) { alps_process_trackstick_packet_v3(psmouse); return; } alps_process_touchpad_packet_v3_v5(psmouse); } static void alps_process_packet_v6(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; /* * We can use Byte5 to distinguish if the packet is from Touchpad * or Trackpoint. * Touchpad: 0 - 0x7E * Trackpoint: 0x7F */ if (packet[5] == 0x7F) { /* It should be a DualPoint when received Trackpoint packet */ if (!(priv->flags & ALPS_DUALPOINT)) { psmouse_warn(psmouse, "Rejected trackstick packet from non DualPoint device"); return; } /* Trackpoint packet */ x = packet[1] | ((packet[3] & 0x20) << 2); y = packet[2] | ((packet[3] & 0x40) << 1); z = packet[4]; /* To prevent the cursor jump when finger lifted */ if (x == 0x7F && y == 0x7F && z == 0x7F) x = y = z = 0; /* Divide 4 since trackpoint's speed is too fast */ input_report_rel(dev2, REL_X, (s8)x / 4); input_report_rel(dev2, REL_Y, -((s8)y / 4)); psmouse_report_standard_buttons(dev2, packet[3]); input_sync(dev2); return; } /* Touchpad packet */ x = packet[1] | ((packet[3] & 0x78) << 4); y = packet[2] | ((packet[4] & 0x78) << 4); z = packet[5]; 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); /* v6 touchpad does not have middle button */ packet[3] &= ~BIT(2); psmouse_report_standard_buttons(dev2, packet[3]); input_sync(dev); } static void alps_process_packet_v4(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char *packet = psmouse->packet; struct alps_fields *f = &priv->f; int offset; /* * v4 has a 6-byte encoding for bitmap data, but this data is * broken up between 3 normal packets. Use priv->multi_packet to * track our position in the bitmap packet. */ if (packet[6] & 0x40) { /* sync, reset position */ priv->multi_packet = 0; } if (WARN_ON_ONCE(priv->multi_packet > 2)) return; offset = 2 * priv->multi_packet; priv->multi_data[offset] = packet[6]; priv->multi_data[offset + 1] = packet[7]; f->left = !!(packet[4] & 0x01); f->right = !!(packet[4] & 0x02); f->st.x = ((packet[1] & 0x7f) << 4) | ((packet[3] & 0x30) >> 2) | ((packet[0] & 0x30) >> 4); f->st.y = ((packet[2] & 0x7f) << 4) | (packet[3] & 0x0f); f->pressure = packet[5] & 0x7f; if (++priv->multi_packet > 2) { priv->multi_packet = 0; f->x_map = ((priv->multi_data[2] & 0x1f) << 10) | ((priv->multi_data[3] & 0x60) << 3) | ((priv->multi_data[0] & 0x3f) << 2) | ((priv->multi_data[1] & 0x60) >> 5); f->y_map = ((priv->multi_data[5] & 0x01) << 10) | ((priv->multi_data[3] & 0x1f) << 5) | (priv->multi_data[1] & 0x1f); f->fingers = alps_process_bitmap(priv, f); } alps_report_semi_mt_data(psmouse, f->fingers); } static bool alps_is_valid_package_v7(struct psmouse *psmouse) { switch (psmouse->pktcnt) { case 3: return (psmouse->packet[2] & 0x40) == 0x40; case 4: return (psmouse->packet[3] & 0x48) == 0x48; case 6: return (psmouse->packet[5] & 0x40) == 0x00; } return true; } static unsigned char alps_get_packet_id_v7(char *byte) { unsigned char packet_id; if (byte[4] & 0x40) packet_id = V7_PACKET_ID_TWO; else if (byte[4] & 0x01) packet_id = V7_PACKET_ID_MULTI; else if ((byte[0] & 0x10) && !(byte[4] & 0x43)) packet_id = V7_PACKET_ID_NEW; else if (byte[1] == 0x00 && byte[4] == 0x00) packet_id = V7_PACKET_ID_IDLE; else packet_id = V7_PACKET_ID_UNKNOWN; return packet_id; } static void alps_get_finger_coordinate_v7(struct input_mt_pos *mt, unsigned char *pkt, unsigned char pkt_id) { mt[0].x = ((pkt[2] & 0x80) << 4); mt[0].x |= ((pkt[2] & 0x3F) << 5); mt[0].x |= ((pkt[3] & 0x30) >> 1); mt[0].x |= (pkt[3] & 0x07); mt[0].y = (pkt[1] << 3) | (pkt[0] & 0x07); mt[1].x = ((pkt[3] & 0x80) << 4); mt[1].x |= ((pkt[4] & 0x80) << 3); mt[1].x |= ((pkt[4] & 0x3F) << 4); mt[1].y = ((pkt[5] & 0x80) << 3); mt[1].y |= ((pkt[5] & 0x3F) << 4); switch (pkt_id) { case V7_PACKET_ID_TWO: mt[1].x &= ~0x000F; mt[1].y |= 0x000F; /* Detect false-positive touches where x & y report max value */ if (mt[1].y == 0x7ff && mt[1].x == 0xff0) { mt[1].x = 0; /* y gets set to 0 at the end of this function */ } break; case V7_PACKET_ID_MULTI: mt[1].x &= ~0x003F; mt[1].y &= ~0x0020; mt[1].y |= ((pkt[4] & 0x02) << 4); mt[1].y |= 0x001F; break; case V7_PACKET_ID_NEW: mt[1].x &= ~0x003F; mt[1].x |= (pkt[0] & 0x20); mt[1].y |= 0x000F; break; } mt[0].y = 0x7FF - mt[0].y; mt[1].y = 0x7FF - mt[1].y; } static int alps_get_mt_count(struct input_mt_pos *mt) { int i, fingers = 0; for (i = 0; i < MAX_TOUCHES; i++) { if (mt[i].x != 0 || mt[i].y != 0) fingers++; } return fingers; } static int alps_decode_packet_v7(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char pkt_id; pkt_id = alps_get_packet_id_v7(p); if (pkt_id == V7_PACKET_ID_IDLE) return 0; if (pkt_id == V7_PACKET_ID_UNKNOWN) return -1; /* * NEW packets are send to indicate a discontinuity in the finger * coordinate reporting. Specifically a finger may have moved from * slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for * us. * * NEW packets have 3 problems: * 1) They do not contain middle / right button info (on non clickpads) * this can be worked around by preserving the old button state * 2) They do not contain an accurate fingercount, and they are * typically send when the number of fingers changes. We cannot use * the old finger count as that may mismatch with the amount of * touch coordinates we've available in the NEW packet * 3) Their x data for the second touch is inaccurate leading to * a possible jump of the x coordinate by 16 units when the first * non NEW packet comes in * Since problems 2 & 3 cannot be worked around, just ignore them. */ if (pkt_id == V7_PACKET_ID_NEW) return 1; alps_get_finger_coordinate_v7(f->mt, p, pkt_id); if (pkt_id == V7_PACKET_ID_TWO) f->fingers = alps_get_mt_count(f->mt); else /* pkt_id == V7_PACKET_ID_MULTI */ f->fingers = 3 + (p[5] & 0x03); f->left = (p[0] & 0x80) >> 7; if (priv->flags & ALPS_BUTTONPAD) { if (p[0] & 0x20) f->fingers++; if (p[0] & 0x10) f->fingers++; } else { f->right = (p[0] & 0x20) >> 5; f->middle = (p[0] & 0x10) >> 4; } /* Sometimes a single touch is reported in mt[1] rather then mt[0] */ if (f->fingers == 1 && f->mt[0].x == 0 && f->mt[0].y == 0) { f->mt[0].x = f->mt[1].x; f->mt[0].y = f->mt[1].y; f->mt[1].x = 0; f->mt[1].y = 0; } return 0; } 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; /* It should be a DualPoint when received trackstick packet */ if (!(priv->flags & ALPS_DUALPOINT)) { psmouse_warn(psmouse, "Rejected trackstick packet from non DualPoint device"); return; } x = ((packet[2] & 0xbf)) | ((packet[3] & 0x10) << 2); y = (packet[3] & 0x07) | (packet[4] & 0xb8) | ((packet[3] & 0x20) << 1); z = (packet[5] & 0x3f) | ((packet[3] & 0x80) >> 1); input_report_rel(dev2, REL_X, (s8)x); input_report_rel(dev2, REL_Y, -((s8)y)); input_report_abs(dev2, ABS_PRESSURE, z); psmouse_report_standard_buttons(dev2, packet[1]); input_sync(dev2); } static void alps_process_touchpad_packet_v7(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; struct input_dev *dev = psmouse->dev; struct alps_fields *f = &priv->f; memset(f, 0, sizeof(*f)); if (priv->decode_fields(f, psmouse->packet, psmouse)) return; alps_report_mt_data(psmouse, alps_get_mt_count(f->mt)); input_mt_report_finger_count(dev, f->fingers); input_report_key(dev, BTN_LEFT, f->left); input_report_key(dev, BTN_RIGHT, f->right); input_report_key(dev, BTN_MIDDLE, f->middle); input_sync(dev); } static void alps_process_packet_v7(struct psmouse *psmouse) { unsigned char *packet = psmouse->packet; if (packet[0] == 0x48 && (packet[4] & 0x47) == 0x06) alps_process_trackstick_packet_v7(psmouse); else alps_process_touchpad_packet_v7(psmouse); } static enum SS4_PACKET_ID alps_get_pkt_id_ss4_v2(unsigned char *byte) { enum SS4_PACKET_ID pkt_id = SS4_PACKET_ID_IDLE; switch (byte[3] & 0x30) { case 0x00: if (SS4_IS_IDLE_V2(byte)) { pkt_id = SS4_PACKET_ID_IDLE; } else { pkt_id = SS4_PACKET_ID_ONE; } break; case 0x10: /* two-finger finger positions */ pkt_id = SS4_PACKET_ID_TWO; break; case 0x20: /* stick pointer */ pkt_id = SS4_PACKET_ID_STICK; break; case 0x30: /* third and fourth finger positions */ pkt_id = SS4_PACKET_ID_MULTI; break; } return pkt_id; } static int alps_decode_ss4_v2(struct alps_fields *f, unsigned char *p, struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; enum SS4_PACKET_ID pkt_id; unsigned int no_data_x, no_data_y; pkt_id = alps_get_pkt_id_ss4_v2(p); /* Current packet is 1Finger coordinate packet */ switch (pkt_id) { case SS4_PACKET_ID_ONE: f->mt[0].x = SS4_1F_X_V2(p); f->mt[0].y = SS4_1F_Y_V2(p); f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; /* * When a button is held the device will give us events * with x, y, and pressure of 0. This causes annoying jumps * if a touch is released while the button is held. * Handle this by claiming zero contacts. */ f->fingers = f->pressure > 0 ? 1 : 0; f->first_mp = 0; f->is_mp = 0; break; case SS4_PACKET_ID_TWO: if (priv->flags & ALPS_BUTTONPAD) { if (IS_SS4PLUS_DEV(priv->dev_id)) { f->mt[0].x = SS4_PLUS_BTL_MF_X_V2(p, 0); f->mt[1].x = SS4_PLUS_BTL_MF_X_V2(p, 1); } else { f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); } f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); } else { if (IS_SS4PLUS_DEV(priv->dev_id)) { f->mt[0].x = SS4_PLUS_STD_MF_X_V2(p, 0); f->mt[1].x = SS4_PLUS_STD_MF_X_V2(p, 1); } else { f->mt[0].x = SS4_STD_MF_X_V2(p, 0); f->mt[1].x = SS4_STD_MF_X_V2(p, 1); } f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); } f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; if (SS4_IS_MF_CONTINUE(p)) { f->first_mp = 1; } else { f->fingers = 2; f->first_mp = 0; } f->is_mp = 0; break; case SS4_PACKET_ID_MULTI: if (priv->flags & ALPS_BUTTONPAD) { if (IS_SS4PLUS_DEV(priv->dev_id)) { f->mt[2].x = SS4_PLUS_BTL_MF_X_V2(p, 0); f->mt[3].x = SS4_PLUS_BTL_MF_X_V2(p, 1); no_data_x = SS4_PLUS_MFPACKET_NO_AX_BL; } else { f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); no_data_x = SS4_MFPACKET_NO_AX_BL; } no_data_y = SS4_MFPACKET_NO_AY_BL; f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); } else { if (IS_SS4PLUS_DEV(priv->dev_id)) { f->mt[2].x = SS4_PLUS_STD_MF_X_V2(p, 0); f->mt[3].x = SS4_PLUS_STD_MF_X_V2(p, 1); no_data_x = SS4_PLUS_MFPACKET_NO_AX; } else { f->mt[2].x = SS4_STD_MF_X_V2(p, 0); f->mt[3].x = SS4_STD_MF_X_V2(p, 1); no_data_x = SS4_MFPACKET_NO_AX; } no_data_y = SS4_MFPACKET_NO_AY; f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); } f->first_mp = 0; f->is_mp = 1; if (SS4_IS_5F_DETECTED(p)) { f->fingers = 5; } else if (f->mt[3].x == no_data_x && f->mt[3].y == no_data_y) { f->mt[3].x = 0; f->mt[3].y = 0; f->fingers = 3; } else { f->fingers = 4; } break; case SS4_PACKET_ID_STICK: /* * x, y, and pressure are decoded in * alps_process_packet_ss4_v2() */ f->first_mp = 0; f->is_mp = 0; break; case SS4_PACKET_ID_IDLE: default: memset(f, 0, sizeof(struct alps_fields)); break; } /* handle buttons */ if (pkt_id == SS4_PACKET_ID_STICK) { f->ts_left = !!(SS4_BTN_V2(p) & 0x01); f->ts_right = !!(SS4_BTN_V2(p) & 0x02); f->ts_middle = !!(SS4_BTN_V2(p) & 0x04); } else { f->left = !!(SS4_BTN_V2(p) & 0x01); if (!(priv->flags & ALPS_BUTTONPAD)) { f->right = !!(SS4_BTN_V2(p) & 0x02); f->middle = !!(SS4_BTN_V2(p) & 0x04); } } return 0; } static void alps_process_packet_ss4_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; struct alps_fields *f = &priv->f; memset(f, 0, sizeof(struct alps_fields)); priv->decode_fields(f, packet, psmouse); if (priv->multi_packet) { /* * Sometimes the first packet will indicate a multi-packet * sequence, but sometimes the next multi-packet would not * come. Check for this, and when it happens process the * position packet as usual. */ if (f->is_mp) { /* Now process the 1st packet */ priv->decode_fields(f, priv->multi_data, psmouse); } else { priv->multi_packet = 0; } } /* * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. * When it is set, it means 2nd packet comes without 1st packet come. */ if (f->is_mp) return; /* Save the first packet */ if (!priv->multi_packet && f->first_mp) { priv->multi_packet = 1; memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); return; } priv->multi_packet = 0; /* Report trackstick */ if (alps_get_pkt_id_ss4_v2(packet) == SS4_PACKET_ID_STICK) { if (!(priv->flags & ALPS_DUALPOINT)) { psmouse_warn(psmouse, "Rejected trackstick packet from non DualPoint device"); return; } input_report_rel(dev2, REL_X, SS4_TS_X_V2(packet)); input_report_rel(dev2, REL_Y, SS4_TS_Y_V2(packet)); input_report_abs(dev2, ABS_PRESSURE, SS4_TS_Z_V2(packet)); input_report_key(dev2, BTN_LEFT, f->ts_left); input_report_key(dev2, BTN_RIGHT, f->ts_right); input_report_key(dev2, BTN_MIDDLE, f->ts_middle); input_sync(dev2); return; } /* Report touchpad */ alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); input_mt_report_finger_count(dev, f->fingers); input_report_key(dev, BTN_LEFT, f->left); input_report_key(dev, BTN_RIGHT, f->right); input_report_key(dev, BTN_MIDDLE, f->middle); input_report_abs(dev, ABS_PRESSURE, f->pressure); input_sync(dev); } static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) { if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) return false; if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) return false; return true; } static DEFINE_MUTEX(alps_mutex); static int alps_do_register_bare_ps2_mouse(struct alps_data *priv) { struct psmouse *psmouse = priv->psmouse; struct input_dev *dev3; int error; dev3 = input_allocate_device(); if (!dev3) { psmouse_err(psmouse, "failed to allocate secondary device\n"); return -ENOMEM; } scnprintf(priv->phys3, sizeof(priv->phys3), "%s/%s", psmouse->ps2dev.serio->phys, (priv->dev2 ? "input2" : "input1")); dev3->phys = priv->phys3; /* * format of input device name is: "protocol vendor name" * see function psmouse_switch_protocol() in psmouse-base.c */ dev3->name = "PS/2 ALPS Mouse"; dev3->id.bustype = BUS_I8042; dev3->id.vendor = 0x0002; dev3->id.product = PSMOUSE_PS2; dev3->id.version = 0x0000; dev3->dev.parent = &psmouse->ps2dev.serio->dev; input_set_capability(dev3, EV_REL, REL_X); input_set_capability(dev3, EV_REL, REL_Y); input_set_capability(dev3, EV_KEY, BTN_LEFT); input_set_capability(dev3, EV_KEY, BTN_RIGHT); input_set_capability(dev3, EV_KEY, BTN_MIDDLE); __set_bit(INPUT_PROP_POINTER, dev3->propbit); error = input_register_device(dev3); if (error) { psmouse_err(psmouse, "failed to register secondary device: %d\n", error); goto err_free_input; } priv->dev3 = dev3; return 0; err_free_input: input_free_device(dev3); return error; } static void alps_register_bare_ps2_mouse(struct work_struct *work) { struct alps_data *priv = container_of(work, struct alps_data, dev3_register_work.work); int error; guard(mutex)(&alps_mutex); if (!priv->dev3) { error = alps_do_register_bare_ps2_mouse(priv); if (error) { /* * Save the error code so that we can detect that we * already tried to create the device. */ priv->dev3 = ERR_PTR(error); } } } static void alps_report_bare_ps2_packet(struct psmouse *psmouse, unsigned char packet[], bool report_buttons) { struct alps_data *priv = psmouse->private; struct input_dev *dev, *dev2 = NULL; /* Figure out which device to use to report the bare packet */ if (priv->proto_version == ALPS_PROTO_V2 && (priv->flags & ALPS_DUALPOINT)) { /* On V2 devices the DualPoint Stick reports bare packets */ dev = priv->dev2; dev2 = psmouse->dev; } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) { /* Register dev3 mouse if we received PS/2 packet first time */ if (!IS_ERR(priv->dev3)) psmouse_queue_work(psmouse, &priv->dev3_register_work, 0); return; } else { dev = priv->dev3; } if (report_buttons) alps_report_buttons(dev, dev2, packet[0] & 1, packet[0] & 2, packet[0] & 4); psmouse_report_standard_motion(dev, packet); input_sync(dev); } static psmouse_ret_t alps_handle_interleaved_ps2(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; if (psmouse->pktcnt < 6) return PSMOUSE_GOOD_DATA; if (psmouse->pktcnt == 6) { /* * Start a timer to flush the packet if it ends up last * 6-byte packet in the stream. Timer needs to fire * psmouse core times out itself. 20 ms should be enough * to decide if we are getting more data or not. */ mod_timer(&priv->timer, jiffies + msecs_to_jiffies(20)); return PSMOUSE_GOOD_DATA; } timer_delete(&priv->timer); if (psmouse->packet[6] & 0x80) { /* * Highest bit is set - that means we either had * complete ALPS packet and this is start of the * next packet or we got garbage. */ if (((psmouse->packet[3] | psmouse->packet[4] | psmouse->packet[5]) & 0x80) || (!alps_is_valid_first_byte(priv, psmouse->packet[6]))) { psmouse_dbg(psmouse, "refusing packet %4ph (suspected interleaved ps/2)\n", psmouse->packet + 3); return PSMOUSE_BAD_DATA; } priv->process_packet(psmouse); /* Continue with the next packet */ psmouse->packet[0] = psmouse->packet[6]; psmouse->pktcnt = 1; } else { /* * High bit is 0 - that means that we indeed got a PS/2 * packet in the middle of ALPS packet. * * There is also possibility that we got 6-byte ALPS * packet followed by 3-byte packet from trackpoint. We * can not distinguish between these 2 scenarios but * because the latter is unlikely to happen in course of * normal operation (user would need to press all * buttons on the pad and start moving trackpoint * without touching the pad surface) we assume former. * Even if we are wrong the wost thing that would happen * the cursor would jump but we should not get protocol * de-synchronization. */ alps_report_bare_ps2_packet(psmouse, &psmouse->packet[3], false); /* * Continue with the standard ALPS protocol handling, * but make sure we won't process it as an interleaved * packet again, which may happen if all buttons are * pressed. To avoid this let's reset the 4th bit which * is normally 1. */ psmouse->packet[3] = psmouse->packet[6] & 0xf7; psmouse->pktcnt = 4; } return PSMOUSE_GOOD_DATA; } static void alps_flush_packet(struct timer_list *t) { struct alps_data *priv = timer_container_of(priv, t, timer); struct psmouse *psmouse = priv->psmouse; guard(serio_pause_rx)(psmouse->ps2dev.serio); if (psmouse->pktcnt == psmouse->pktsize) { /* * We did not any more data in reasonable amount of time. * Validate the last 3 bytes and process as a standard * ALPS packet. */ if ((psmouse->packet[3] | psmouse->packet[4] | psmouse->packet[5]) & 0x80) { psmouse_dbg(psmouse, "refusing packet %3ph (suspected interleaved ps/2)\n", psmouse->packet + 3); } else { priv->process_packet(psmouse); } psmouse->pktcnt = 0; } } static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; /* * Check if we are dealing with a bare PS/2 packet, presumably from * a device connected to the external PS/2 port. Because bare PS/2 * protocol does not have enough constant bits to self-synchronize * properly we only do this if the device is fully synchronized. * Can not distinguish V8's first byte from PS/2 packet's */ if (priv->proto_version != ALPS_PROTO_V8 && !psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { if (psmouse->pktcnt == 3) { alps_report_bare_ps2_packet(psmouse, psmouse->packet, true); return PSMOUSE_FULL_PACKET; } return PSMOUSE_GOOD_DATA; } /* Check for PS/2 packet stuffed in the middle of ALPS packet. */ if ((priv->flags & ALPS_PS2_INTERLEAVED) && psmouse->pktcnt >= 4 && (psmouse->packet[3] & 0x0f) == 0x0f) { return alps_handle_interleaved_ps2(psmouse); } if (!alps_is_valid_first_byte(priv, psmouse->packet[0])) { psmouse_dbg(psmouse, "refusing packet[0] = %x (mask0 = %x, byte0 = %x)\n", psmouse->packet[0], priv->mask0, priv->byte0); return PSMOUSE_BAD_DATA; } /* Bytes 2 - pktsize should have 0 in the highest bit */ if (priv->proto_version < ALPS_PROTO_V5 && psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]); if (priv->proto_version == ALPS_PROTO_V3_RUSHMORE && psmouse->pktcnt == psmouse->pktsize) { /* * Some Dell boxes, such as Latitude E6440 or E7440 * with closed lid, quite often smash last byte of * otherwise valid packet with 0xff. Given that the * next packet is very likely to be valid let's * report PSMOUSE_FULL_PACKET but not process data, * rather than reporting PSMOUSE_BAD_DATA and * filling the logs. */ return PSMOUSE_FULL_PACKET; } return PSMOUSE_BAD_DATA; } if ((priv->proto_version == ALPS_PROTO_V7 && !alps_is_valid_package_v7(psmouse)) || (priv->proto_version == ALPS_PROTO_V8 && !alps_is_valid_package_ss4_v2(psmouse))) { psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]); return PSMOUSE_BAD_DATA; } if (psmouse->pktcnt == psmouse->pktsize) { priv->process_packet(psmouse); return PSMOUSE_FULL_PACKET; } return PSMOUSE_GOOD_DATA; } static int alps_command_mode_send_nibble(struct psmouse *psmouse, int nibble) { struct ps2dev *ps2dev = &psmouse->ps2dev; struct alps_data *priv = psmouse->private; int command; unsigned char *param; unsigned char dummy[4]; BUG_ON(nibble > 0xf); command = priv->nibble_commands[nibble].command; param = (command & 0x0f00) ? dummy : (unsigned char *)&priv->nibble_commands[nibble].data; if (ps2_command(ps2dev, param, command)) return -1; return 0; } static int alps_command_mode_set_addr(struct psmouse *psmouse, int addr) { struct ps2dev *ps2dev = &psmouse->ps2dev; struct alps_data *priv = psmouse->private; int i, nibble; if (ps2_command(ps2dev, NULL, priv->addr_command)) return -1; for (i = 12; i >= 0; i -= 4) { nibble = (addr >> i) & 0xf; if (alps_command_mode_send_nibble(psmouse, nibble)) return -1; } return 0; } static int __alps_command_mode_read_reg(struct psmouse *psmouse, int addr) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[4]; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) return -1; /* * The address being read is returned in the first two bytes * of the result. Check that this address matches the expected * address. */ if (addr != ((param[0] << 8) | param[1])) return -1; return param[2]; } static int alps_command_mode_read_reg(struct psmouse *psmouse, int addr) { if (alps_command_mode_set_addr(psmouse, addr)) return -1; return __alps_command_mode_read_reg(psmouse, addr); } static int __alps_command_mode_write_reg(struct psmouse *psmouse, u8 value) { if (alps_command_mode_send_nibble(psmouse, (value >> 4) & 0xf)) return -1; if (alps_command_mode_send_nibble(psmouse, value & 0xf)) return -1; return 0; } static int alps_command_mode_write_reg(struct psmouse *psmouse, int addr, u8 value) { if (alps_command_mode_set_addr(psmouse, addr)) return -1; return __alps_command_mode_write_reg(psmouse, value); } static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, int repeated_command, unsigned char *param) { struct ps2dev *ps2dev = &psmouse->ps2dev; param[0] = 0; if (init_command && ps2_command(ps2dev, param, init_command)) return -EIO; if (ps2_command(ps2dev, NULL, repeated_command) || ps2_command(ps2dev, NULL, repeated_command) || ps2_command(ps2dev, NULL, repeated_command)) return -EIO; param[0] = param[1] = param[2] = 0xff; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) return -EIO; psmouse_dbg(psmouse, "%2.2X report: %3ph\n", repeated_command, param); return 0; } static bool alps_check_valid_firmware_id(unsigned char id[]) { if (id[0] == 0x73) return true; if (id[0] == 0x88 && (id[1] == 0x07 || id[1] == 0x08 || (id[1] & 0xf0) == 0xb0 || (id[1] & 0xf0) == 0xc0)) { return true; } return false; } static int alps_enter_command_mode(struct psmouse *psmouse) { unsigned char param[4]; if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_RESET_WRAP, param)) { psmouse_err(psmouse, "failed to enter command mode\n"); return -1; } if (!alps_check_valid_firmware_id(param)) { psmouse_dbg(psmouse, "unknown response while entering command mode\n"); return -1; } return 0; } static inline int alps_exit_command_mode(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) return -1; return 0; } /* * For DualPoint devices select the device that should respond to * subsequent commands. It looks like glidepad is behind stickpointer, * I'd thought it would be other way around... */ static int alps_passthrough_mode_v2(struct psmouse *psmouse, bool enable) { struct ps2dev *ps2dev = &psmouse->ps2dev; int cmd = enable ? PSMOUSE_CMD_SETSCALE21 : PSMOUSE_CMD_SETSCALE11; if (ps2_command(ps2dev, NULL, cmd) || ps2_command(ps2dev, NULL, cmd) || ps2_command(ps2dev, NULL, cmd) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) return -1; /* we may get 3 more bytes, just ignore them */ ps2_drain(ps2dev, 3, 100); return 0; } static int alps_absolute_mode_v1_v2(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; /* Try ALPS magic knock - 4 disable before enable */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) return -1; /* * Switch mouse to poll (remote) mode so motion data will not * get in our way */ return ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL); } static int alps_monitor_mode_send_word(struct psmouse *psmouse, u16 word) { int i, nibble; /* * b0-b11 are valid bits, send sequence is inverse. * e.g. when word = 0x0123, nibble send sequence is 3, 2, 1 */ for (i = 0; i <= 8; i += 4) { nibble = (word >> i) & 0xf; if (alps_command_mode_send_nibble(psmouse, nibble)) return -1; } return 0; } static int alps_monitor_mode_write_reg(struct psmouse *psmouse, u16 addr, u16 value) { struct ps2dev *ps2dev = &psmouse->ps2dev; /* 0x0A0 is the command to write the word */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE) || alps_monitor_mode_send_word(psmouse, 0x0A0) || alps_monitor_mode_send_word(psmouse, addr) || alps_monitor_mode_send_word(psmouse, value) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE)) return -1; return 0; } static int alps_monitor_mode(struct psmouse *psmouse, bool enable) { struct ps2dev *ps2dev = &psmouse->ps2dev; if (enable) { /* EC E9 F5 F5 E7 E6 E7 E9 to enter monitor mode */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_GETINFO)) return -1; } else { /* EC to exit monitor mode */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP)) return -1; } return 0; } static int alps_absolute_mode_v6(struct psmouse *psmouse) { u16 reg_val = 0x181; int ret; /* enter monitor mode, to write the register */ if (alps_monitor_mode(psmouse, true)) return -1; ret = alps_monitor_mode_write_reg(psmouse, 0x000, reg_val); if (alps_monitor_mode(psmouse, false)) ret = -1; return ret; } static int alps_get_status(struct psmouse *psmouse, char *param) { /* Get status: 0xF5 0xF5 0xF5 0xE9 */ if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_DISABLE, param)) return -1; return 0; } /* * Turn touchpad tapping on or off. The sequences are: * 0xE9 0xF5 0xF5 0xF3 0x0A to enable, * 0xE9 0xF5 0xF5 0xE8 0x00 to disable. * My guess that 0xE9 (GetInfo) is here as a sync point. * For models that also have stickpointer (DualPoints) its tapping * is controlled separately (0xE6 0xE6 0xE6 0xF3 0x14|0x0A) but * we don't fiddle with it. */ static int alps_tap_mode(struct psmouse *psmouse, int enable) { struct ps2dev *ps2dev = &psmouse->ps2dev; int cmd = enable ? PSMOUSE_CMD_SETRATE : PSMOUSE_CMD_SETRES; unsigned char tap_arg = enable ? 0x0A : 0x00; unsigned char param[4]; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE) || ps2_command(ps2dev, &tap_arg, cmd)) return -1; if (alps_get_status(psmouse, param)) return -1; return 0; } /* * alps_poll() - poll the touchpad for current motion packet. * Used in resync. */ static int alps_poll(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; unsigned char buf[sizeof(psmouse->packet)]; bool poll_failed; if (priv->flags & ALPS_PASS) alps_passthrough_mode_v2(psmouse, true); poll_failed = ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; if (priv->flags & ALPS_PASS) alps_passthrough_mode_v2(psmouse, false); if (poll_failed || (buf[0] & priv->mask0) != priv->byte0) return -1; if ((psmouse->badbyte & 0xc8) == 0x08) { /* * Poll the track stick ... */ if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8))) return -1; } memcpy(psmouse->packet, buf, sizeof(buf)); return 0; } static int alps_hw_init_v1_v2(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; if ((priv->flags & ALPS_PASS) && alps_passthrough_mode_v2(psmouse, true)) { return -1; } if (alps_tap_mode(psmouse, true)) { psmouse_warn(psmouse, "Failed to enable hardware tapping\n"); return -1; } if (alps_absolute_mode_v1_v2(psmouse)) { psmouse_err(psmouse, "Failed to enable absolute mode\n"); return -1; } if ((priv->flags & ALPS_PASS) && alps_passthrough_mode_v2(psmouse, false)) { return -1; } /* ALPS needs stream mode, otherwise it won't report any data */ if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { psmouse_err(psmouse, "Failed to enable stream mode\n"); return -1; } return 0; } /* Must be in passthrough mode when calling this function */ static int alps_trackstick_enter_extended_mode_v3_v6(struct psmouse *psmouse) { unsigned char param[2] = {0xC8, 0x14}; if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(&psmouse->ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || ps2_command(&psmouse->ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) return -1; return 0; } static int alps_hw_init_v6(struct psmouse *psmouse) { int ret; /* Enter passthrough mode to let trackpoint enter 6byte raw mode */ if (alps_passthrough_mode_v2(psmouse, true)) return -1; ret = alps_trackstick_enter_extended_mode_v3_v6(psmouse); if (alps_passthrough_mode_v2(psmouse, false)) return -1; if (ret) return ret; if (alps_absolute_mode_v6(psmouse)) { psmouse_err(psmouse, "Failed to enable absolute mode\n"); return -1; } return 0; } /* * Enable or disable passthrough mode to the trackstick. */ static int alps_passthrough_mode_v3(struct psmouse *psmouse, int reg_base, bool enable) { int reg_val, ret = -1; if (alps_enter_command_mode(psmouse)) return -1; reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); if (reg_val == -1) goto error; if (enable) reg_val |= 0x01; else reg_val &= ~0x01; ret = __alps_command_mode_write_reg(psmouse, reg_val); error: if (alps_exit_command_mode(psmouse)) ret = -1; return ret; } /* Must be in command mode when calling this function */ static int alps_absolute_mode_v3(struct psmouse *psmouse) { int reg_val; reg_val = alps_command_mode_read_reg(psmouse, 0x0004); if (reg_val == -1) return -1; reg_val |= 0x06; if (__alps_command_mode_write_reg(psmouse, reg_val)) return -1; return 0; } static int alps_probe_trackstick_v3_v7(struct psmouse *psmouse, int reg_base) { int ret = -EIO, reg_val; if (alps_enter_command_mode(psmouse)) goto error; reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); if (reg_val == -1) goto error; /* bit 7: trackstick is present */ ret = reg_val & 0x80 ? 0 : -ENODEV; error: alps_exit_command_mode(psmouse); return ret; } static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) { int ret = 0; int reg_val; unsigned char param[4]; /* * We need to configure trackstick to report data for touchpad in * extended format. And also we need to tell touchpad to expect data * from trackstick in extended format. Without this configuration * trackstick packets sent from touchpad are in basic format which is * different from what we expect. */ if (alps_passthrough_mode_v3(psmouse, reg_base, true)) return -EIO; /* * E7 report for the trackstick * * There have been reports of failures to seem to trace back * to the above trackstick check failing. When these occur * this E7 report fails, so when that happens we continue * with the assumption that there isn't a trackstick after * all. */ if (alps_rpt_cmd(psmouse, 0, PSMOUSE_CMD_SETSCALE21, param)) { psmouse_warn(psmouse, "Failed to initialize trackstick (E7 report failed)\n"); ret = -ENODEV; } else { psmouse_dbg(psmouse, "trackstick E7 report: %3ph\n", param); if (alps_trackstick_enter_extended_mode_v3_v6(psmouse)) { psmouse_err(psmouse, "Failed to enter into trackstick extended mode\n"); ret = -EIO; } } if (alps_passthrough_mode_v3(psmouse, reg_base, false)) return -EIO; if (ret) return ret; if (alps_enter_command_mode(psmouse)) return -EIO; reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); if (reg_val == -1) { ret = -EIO; } else { /* * Tell touchpad that trackstick is now in extended mode. * If bit 1 isn't set the packet format is different. */ reg_val |= BIT(1); if (__alps_command_mode_write_reg(psmouse, reg_val)) ret = -EIO; } if (alps_exit_command_mode(psmouse)) return -EIO; return ret; } static int alps_hw_init_v3(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; struct ps2dev *ps2dev = &psmouse->ps2dev; int reg_val; unsigned char param[4]; if ((priv->flags & ALPS_DUALPOINT) && alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) goto error; if (alps_enter_command_mode(psmouse) || alps_absolute_mode_v3(psmouse)) { psmouse_err(psmouse, "Failed to enter absolute mode\n"); goto error; } reg_val = alps_command_mode_read_reg(psmouse, 0x0006); if (reg_val == -1) goto error; if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) goto error; reg_val = alps_command_mode_read_reg(psmouse, 0x0007); if (reg_val == -1) goto error; if (__alps_command_mode_write_reg(psmouse, reg_val | 0x01)) goto error; if (alps_command_mode_read_reg(psmouse, 0x0144) == -1) goto error; if (__alps_command_mode_write_reg(psmouse, 0x04)) goto error; if (alps_command_mode_read_reg(psmouse, 0x0159) == -1) goto error; if (__alps_command_mode_write_reg(psmouse, 0x03)) goto error; if (alps_command_mode_read_reg(psmouse, 0x0163) == -1) goto error; if (alps_command_mode_write_reg(psmouse, 0x0163, 0x03)) goto error; if (alps_command_mode_read_reg(psmouse, 0x0162) == -1) goto error; if (alps_command_mode_write_reg(psmouse, 0x0162, 0x04)) goto error; alps_exit_command_mode(psmouse); /* Set rate and enable data reporting */ param[0] = 0x64; if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { psmouse_err(psmouse, "Failed to enable data reporting\n"); return -1; } return 0; error: /* * Leaving the touchpad in command mode will essentially render * it unusable until the machine reboots, so exit it here just * to be safe */ alps_exit_command_mode(psmouse); return -1; } static int alps_get_v3_v7_resolution(struct psmouse *psmouse, int reg_pitch) { int reg, x_pitch, y_pitch, x_electrode, y_electrode, x_phys, y_phys; struct alps_data *priv = psmouse->private; reg = alps_command_mode_read_reg(psmouse, reg_pitch); if (reg < 0) return reg; x_pitch = (s8)(reg << 4) >> 4; /* sign extend lower 4 bits */ x_pitch = 50 + 2 * x_pitch; /* In 0.1 mm units */ y_pitch = (s8)reg >> 4; /* sign extend upper 4 bits */ y_pitch = 36 + 2 * y_pitch; /* In 0.1 mm units */ reg = alps_command_mode_read_reg(psmouse, reg_pitch + 1); if (reg < 0) return reg; x_electrode = (s8)(reg << 4) >> 4; /* sign extend lower 4 bits */ x_electrode = 17 + x_electrode; y_electrode = (s8)reg >> 4; /* sign extend upper 4 bits */ y_electrode = 13 + y_electrode; x_phys = x_pitch * (x_electrode - 1); /* In 0.1 mm units */ y_phys = y_pitch * (y_electrode - 1); /* In 0.1 mm units */ priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ psmouse_dbg(psmouse, "pitch %dx%d num-electrodes %dx%d physical size %dx%d mm res %dx%d\n", x_pitch, y_pitch, x_electrode, y_electrode, x_phys / 10, y_phys / 10, priv->x_res, priv->y_res); return 0; } static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; struct ps2dev *ps2dev = &psmouse->ps2dev; int reg_val, ret = -1; if (priv->flags & ALPS_DUALPOINT) { reg_val = alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_RUSHMORE); if (reg_val == -EIO) goto error; } if (alps_enter_command_mode(psmouse) || alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) goto error; if (alps_get_v3_v7_resolution(psmouse, 0xc2da)) goto error; reg_val = alps_command_mode_read_reg(psmouse, 0xc2c6); if (reg_val == -1) goto error; if (__alps_command_mode_write_reg(psmouse, reg_val & 0xfd)) goto error; if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) goto error; /* enter absolute mode */ reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); if (reg_val == -1) goto error; if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) goto error; alps_exit_command_mode(psmouse); return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); error: alps_exit_command_mode(psmouse); return ret; } /* Must be in command mode when calling this function */ static int alps_absolute_mode_v4(struct psmouse *psmouse) { int reg_val; reg_val = alps_command_mode_read_reg(psmouse, 0x0004); if (reg_val == -1) return -1; reg_val |= 0x02; if (__alps_command_mode_write_reg(psmouse, reg_val)) return -1; return 0; } static int alps_hw_init_v4(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[4]; if (alps_enter_command_mode(psmouse)) goto error; if (alps_absolute_mode_v4(psmouse)) { psmouse_err(psmouse, "Failed to enter absolute mode\n"); goto error; } if (alps_command_mode_write_reg(psmouse, 0x0007, 0x8c)) goto error; if (alps_command_mode_write_reg(psmouse, 0x0149, 0x03)) goto error; if (alps_command_mode_write_reg(psmouse, 0x0160, 0x03)) goto error; if (alps_command_mode_write_reg(psmouse, 0x017f, 0x15)) goto error; if (alps_command_mode_write_reg(psmouse, 0x0151, 0x01)) goto error; if (alps_command_mode_write_reg(psmouse, 0x0168, 0x03)) goto error; if (alps_command_mode_write_reg(psmouse, 0x014a, 0x03)) goto error; if (alps_command_mode_write_reg(psmouse, 0x0161, 0x03)) goto error; alps_exit_command_mode(psmouse); /* * This sequence changes the output from a 9-byte to an * 8-byte format. All the same data seems to be present, * just in a more compact format. */ param[0] = 0xc8; param[1] = 0x64; param[2] = 0x50; if (ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, ¶m[2], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, param, PSMOUSE_CMD_GETID)) return -1; /* Set rate and enable data reporting */ param[0] = 0x64; if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE)) { psmouse_err(psmouse, "Failed to enable data reporting\n"); return -1; } return 0; error: /* * Leaving the touchpad in command mode will essentially render * it unusable until the machine reboots, so exit it here just * to be safe */ alps_exit_command_mode(psmouse); return -1; } static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, unsigned char index, unsigned char otp[]) { struct ps2dev *ps2dev = &psmouse->ps2dev; switch (index) { case 0: if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) return -1; break; case 1: if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) return -1; break; } return 0; } static int alps_update_device_area_ss4_v2(unsigned char otp[][4], struct alps_data *priv) { int num_x_electrode; int num_y_electrode; int x_pitch, y_pitch, x_phys, y_phys; if (IS_SS4PLUS_DEV(priv->dev_id)) { num_x_electrode = SS4PLUS_NUMSENSOR_XOFFSET + (otp[0][2] & 0x0F); num_y_electrode = SS4PLUS_NUMSENSOR_YOFFSET + ((otp[0][2] >> 4) & 0x0F); priv->x_max = (num_x_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; priv->y_max = (num_y_electrode - 1) * SS4PLUS_COUNT_PER_ELECTRODE; x_pitch = (otp[0][1] & 0x0F) + SS4PLUS_MIN_PITCH_MM; y_pitch = ((otp[0][1] >> 4) & 0x0F) + SS4PLUS_MIN_PITCH_MM; } else { num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; } x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ return 0; } static int alps_update_btn_info_ss4_v2(unsigned char otp[][4], struct alps_data *priv) { unsigned char is_btnless; if (IS_SS4PLUS_DEV(priv->dev_id)) is_btnless = (otp[1][0] >> 1) & 0x01; else is_btnless = (otp[1][1] >> 3) & 0x01; if (is_btnless) priv->flags |= ALPS_BUTTONPAD; return 0; } static int alps_update_dual_info_ss4_v2(unsigned char otp[][4], struct alps_data *priv, struct psmouse *psmouse) { bool is_dual = false; int reg_val = 0; struct ps2dev *ps2dev = &psmouse->ps2dev; if (IS_SS4PLUS_DEV(priv->dev_id)) { is_dual = (otp[0][0] >> 4) & 0x01; if (!is_dual) { /* For support TrackStick of Thinkpad L/E series */ if (alps_exit_command_mode(psmouse) == 0 && alps_enter_command_mode(psmouse) == 0) { reg_val = alps_command_mode_read_reg(psmouse, 0xD7); } alps_exit_command_mode(psmouse); ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); if (reg_val == 0x0C || reg_val == 0x1D) is_dual = true; } } if (is_dual) priv->flags |= ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE; return 0; } static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, struct alps_data *priv) { unsigned char otp[2][4]; memset(otp, 0, sizeof(otp)); if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) || alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0])) return -1; alps_update_device_area_ss4_v2(otp, priv); alps_update_btn_info_ss4_v2(otp, priv); alps_update_dual_info_ss4_v2(otp, priv, psmouse); return 0; } static int alps_dolphin_get_device_area(struct psmouse *psmouse, struct alps_data *priv) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[4] = {0}; int num_x_electrode, num_y_electrode; if (alps_enter_command_mode(psmouse)) return -1; param[0] = 0x0a; if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_WRAP) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE)) return -1; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) return -1; /* * Dolphin's sensor line number is not fixed. It can be calculated * by adding the device's register value with DOLPHIN_PROFILE_X/YOFFSET. * Further more, we can get device's x_max and y_max by multiplying * sensor line number with DOLPHIN_COUNT_PER_ELECTRODE. * * e.g. When we get register's sensor_x = 11 & sensor_y = 8, * real sensor line number X = 11 + 8 = 19, and * real sensor line number Y = 8 + 1 = 9. * So, x_max = (19 - 1) * 64 = 1152, and * y_max = (9 - 1) * 64 = 512. */ num_x_electrode = DOLPHIN_PROFILE_XOFFSET + (param[2] & 0x0F); num_y_electrode = DOLPHIN_PROFILE_YOFFSET + ((param[2] >> 4) & 0x0F); priv->x_bits = num_x_electrode; priv->y_bits = num_y_electrode; priv->x_max = (num_x_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; priv->y_max = (num_y_electrode - 1) * DOLPHIN_COUNT_PER_ELECTRODE; if (alps_exit_command_mode(psmouse)) return -1; return 0; } static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[2]; /* This is dolphin "v1" as empirically defined by florin9doi */ param[0] = 0x64; param[1] = 0x28; if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) return -1; return 0; } static int alps_hw_init_v7(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; int reg_val, ret = -1; if (alps_enter_command_mode(psmouse) || alps_command_mode_read_reg(psmouse, 0xc2d9) == -1) goto error; if (alps_get_v3_v7_resolution(psmouse, 0xc397)) goto error; if (alps_command_mode_write_reg(psmouse, 0xc2c9, 0x64)) goto error; reg_val = alps_command_mode_read_reg(psmouse, 0xc2c4); if (reg_val == -1) goto error; if (__alps_command_mode_write_reg(psmouse, reg_val | 0x02)) goto error; alps_exit_command_mode(psmouse); return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); error: alps_exit_command_mode(psmouse); return ret; } static int alps_hw_init_ss4_v2(struct psmouse *psmouse) { struct ps2dev *ps2dev = &psmouse->ps2dev; char param[2] = {0x64, 0x28}; int ret = -1; /* enter absolute mode */ if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { goto error; } /* T.B.D. Decread noise packet number, delete in the future */ if (alps_exit_command_mode(psmouse) || alps_enter_command_mode(psmouse) || alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { goto error; } alps_exit_command_mode(psmouse); return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); error: alps_exit_command_mode(psmouse); return ret; } static int alps_set_protocol(struct psmouse *psmouse, struct alps_data *priv, const struct alps_protocol_info *protocol) { psmouse->private = priv; timer_setup(&priv->timer, alps_flush_packet, 0); priv->proto_version = protocol->version; priv->byte0 = protocol->byte0; priv->mask0 = protocol->mask0; priv->flags = protocol->flags; 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: priv->hw_init = alps_hw_init_v1_v2; priv->process_packet = alps_process_packet_v1_v2; priv->set_abs_params = alps_set_abs_params_st; priv->x_max = 1023; priv->y_max = 767; if (dmi_check_system(alps_dmi_has_separate_stick_buttons)) priv->flags |= ALPS_STICK_BITS; break; case ALPS_PROTO_V3: priv->hw_init = alps_hw_init_v3; priv->process_packet = alps_process_packet_v3; priv->set_abs_params = alps_set_abs_params_semi_mt; priv->decode_fields = alps_decode_pinnacle; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_PINNACLE) < 0) priv->flags &= ~ALPS_DUALPOINT; break; case ALPS_PROTO_V3_RUSHMORE: priv->hw_init = alps_hw_init_rushmore_v3; priv->process_packet = alps_process_packet_v3; priv->set_abs_params = alps_set_abs_params_semi_mt; priv->decode_fields = alps_decode_rushmore; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; priv->x_bits = 16; priv->y_bits = 12; if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_RUSHMORE) < 0) priv->flags &= ~ALPS_DUALPOINT; break; case ALPS_PROTO_V4: priv->hw_init = alps_hw_init_v4; priv->process_packet = alps_process_packet_v4; priv->set_abs_params = alps_set_abs_params_semi_mt; priv->nibble_commands = alps_v4_nibble_commands; priv->addr_command = PSMOUSE_CMD_DISABLE; break; case ALPS_PROTO_V5: priv->hw_init = alps_hw_init_dolphin_v1; priv->process_packet = alps_process_touchpad_packet_v3_v5; priv->decode_fields = alps_decode_dolphin; priv->set_abs_params = alps_set_abs_params_semi_mt; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; priv->x_bits = 23; priv->y_bits = 12; if (alps_dolphin_get_device_area(psmouse, priv)) return -EIO; break; case ALPS_PROTO_V6: priv->hw_init = alps_hw_init_v6; priv->process_packet = alps_process_packet_v6; priv->set_abs_params = alps_set_abs_params_st; priv->nibble_commands = alps_v6_nibble_commands; priv->x_max = 2047; priv->y_max = 1535; break; case ALPS_PROTO_V7: priv->hw_init = alps_hw_init_v7; priv->process_packet = alps_process_packet_v7; priv->decode_fields = alps_decode_packet_v7; priv->set_abs_params = alps_set_abs_params_v7; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; priv->x_max = 0xfff; priv->y_max = 0x7ff; if (priv->fw_ver[1] != 0xba) priv->flags |= ALPS_BUTTONPAD; if (alps_probe_trackstick_v3_v7(psmouse, ALPS_REG_BASE_V7) < 0) priv->flags &= ~ALPS_DUALPOINT; break; case ALPS_PROTO_V8: priv->hw_init = alps_hw_init_ss4_v2; priv->process_packet = alps_process_packet_ss4_v2; priv->decode_fields = alps_decode_ss4_v2; priv->set_abs_params = alps_set_abs_params_ss4_v2; priv->nibble_commands = alps_v3_nibble_commands; priv->addr_command = PSMOUSE_CMD_RESET_WRAP; if (alps_set_defaults_ss4_v2(psmouse, priv)) return -EIO; break; } return 0; } static const struct alps_protocol_info *alps_match_table(unsigned char *e7, unsigned char *ec) { const struct alps_model_info *model; int i; for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) { model = &alps_model_data[i]; if (!memcmp(e7, model->signature, sizeof(model->signature))) return &model->protocol_info; } return NULL; } static bool alps_is_cs19_trackpoint(struct psmouse *psmouse) { u8 param[2] = { 0 }; if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID))) return false; /* * param[0] contains the trackpoint device variant_id while * param[1] contains the firmware_id. So far all alps * trackpoint-only devices have their variant_ids equal * TP_VARIANT_ALPS and their firmware_ids are in 0x20~0x2f range. */ return param[0] == TP_VARIANT_ALPS && ((param[1] & 0xf0) == 0x20); } static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) { const struct alps_protocol_info *protocol; unsigned char e6[4], e7[4], ec[4]; int error; /* * First try "E6 report". * ALPS should return 0,0,10 or 0,0,100 if no buttons are pressed. * The bits 0-2 of the first byte will be 1s if some buttons are * pressed. */ if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, PSMOUSE_CMD_SETSCALE11, e6)) return -EIO; if ((e6[0] & 0xf8) != 0 || e6[1] != 0 || (e6[2] != 10 && e6[2] != 100)) return -EINVAL; /* * Now get the "E7" and "EC" reports. These will uniquely identify * most ALPS touchpads. */ if (alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, PSMOUSE_CMD_SETSCALE21, e7) || alps_rpt_cmd(psmouse, PSMOUSE_CMD_SETRES, PSMOUSE_CMD_RESET_WRAP, ec) || alps_exit_command_mode(psmouse)) return -EIO; protocol = alps_match_table(e7, ec); if (!protocol) { if (e7[0] == 0x73 && e7[1] == 0x02 && e7[2] == 0x64 && ec[2] == 0x8a) { protocol = &alps_v4_protocol_data; } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && ec[0] == 0x73 && (ec[1] == 0x01 || ec[1] == 0x02)) { protocol = &alps_v5_protocol_data; } else if (ec[0] == 0x88 && ((ec[1] & 0xf0) == 0xb0 || (ec[1] & 0xf0) == 0xc0)) { protocol = &alps_v7_protocol_data; } else if (ec[0] == 0x88 && ec[1] == 0x08) { protocol = &alps_v3_rushmore_data; } else if (ec[0] == 0x88 && ec[1] == 0x07 && ec[2] >= 0x90 && ec[2] <= 0x9d) { protocol = &alps_v3_protocol_data; } else if (e7[0] == 0x73 && e7[1] == 0x03 && (e7[2] == 0x14 || e7[2] == 0x28)) { protocol = &alps_v8_protocol_data; } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0xc8) { protocol = &alps_v9_protocol_data; psmouse_warn(psmouse, "Unsupported ALPS V9 touchpad: E7=%3ph, EC=%3ph\n", e7, ec); return -EINVAL; } else { psmouse_dbg(psmouse, "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); return -EINVAL; } } if (priv) { /* Save Device ID and Firmware version */ memcpy(priv->dev_id, e7, 3); memcpy(priv->fw_ver, ec, 3); error = alps_set_protocol(psmouse, priv, protocol); if (error) return error; } return 0; } static int alps_reconnect(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; psmouse_reset(psmouse); if (alps_identify(psmouse, priv) < 0) return -1; return priv->hw_init(psmouse); } static void alps_disconnect(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; psmouse_reset(psmouse); timer_shutdown_sync(&priv->timer); if (priv->dev2) input_unregister_device(priv->dev2); if (!IS_ERR_OR_NULL(priv->dev3)) input_unregister_device(priv->dev3); kfree(priv); } static void alps_set_abs_params_st(struct alps_data *priv, struct input_dev *dev1) { 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); input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); } static void alps_set_abs_params_mt_common(struct alps_data *priv, struct input_dev *dev1) { 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); input_abs_set_res(dev1, ABS_MT_POSITION_X, priv->x_res); input_abs_set_res(dev1, ABS_MT_POSITION_Y, priv->y_res); set_bit(BTN_TOOL_TRIPLETAP, dev1->keybit); set_bit(BTN_TOOL_QUADTAP, dev1->keybit); } static void alps_set_abs_params_semi_mt(struct alps_data *priv, struct input_dev *dev1) { alps_set_abs_params_mt_common(priv, dev1); input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_SEMI_MT); } static void alps_set_abs_params_v7(struct alps_data *priv, struct input_dev *dev1) { alps_set_abs_params_mt_common(priv, dev1); set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); } static void alps_set_abs_params_ss4_v2(struct alps_data *priv, struct input_dev *dev1) { alps_set_abs_params_mt_common(priv, dev1); input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); } int alps_init(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; struct input_dev *dev1 = psmouse->dev; int error; error = priv->hw_init(psmouse); if (error) goto init_fail; /* * Undo part of setup done for us by psmouse core since touchpad * is not a relative device. */ __clear_bit(EV_REL, dev1->evbit); __clear_bit(REL_X, dev1->relbit); __clear_bit(REL_Y, dev1->relbit); /* * Now set up our capabilities. */ dev1->evbit[BIT_WORD(EV_KEY)] |= BIT_MASK(EV_KEY); dev1->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH); dev1->keybit[BIT_WORD(BTN_TOOL_FINGER)] |= BIT_MASK(BTN_TOOL_FINGER); dev1->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); dev1->evbit[BIT_WORD(EV_ABS)] |= BIT_MASK(EV_ABS); priv->set_abs_params(priv, dev1); if (priv->flags & ALPS_WHEEL) { dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); } if (priv->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { dev1->keybit[BIT_WORD(BTN_FORWARD)] |= BIT_MASK(BTN_FORWARD); dev1->keybit[BIT_WORD(BTN_BACK)] |= BIT_MASK(BTN_BACK); } if (priv->flags & ALPS_FOUR_BUTTONS) { dev1->keybit[BIT_WORD(BTN_0)] |= BIT_MASK(BTN_0); dev1->keybit[BIT_WORD(BTN_1)] |= BIT_MASK(BTN_1); dev1->keybit[BIT_WORD(BTN_2)] |= BIT_MASK(BTN_2); dev1->keybit[BIT_WORD(BTN_3)] |= BIT_MASK(BTN_3); } else if (priv->flags & ALPS_BUTTONPAD) { set_bit(INPUT_PROP_BUTTONPAD, dev1->propbit); clear_bit(BTN_RIGHT, dev1->keybit); } else { dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); } if (priv->flags & ALPS_DUALPOINT) { struct input_dev *dev2; dev2 = input_allocate_device(); if (!dev2) { psmouse_err(psmouse, "failed to allocate trackstick device\n"); error = -ENOMEM; goto init_fail; } scnprintf(priv->phys2, sizeof(priv->phys2), "%s/input1", psmouse->ps2dev.serio->phys); dev2->phys = priv->phys2; /* * format of input device name is: "protocol vendor name" * see function psmouse_switch_protocol() in psmouse-base.c */ dev2->name = "AlpsPS/2 ALPS DualPoint Stick"; dev2->id.bustype = BUS_I8042; dev2->id.vendor = 0x0002; dev2->id.product = PSMOUSE_ALPS; dev2->id.version = priv->proto_version; dev2->dev.parent = &psmouse->ps2dev.serio->dev; input_set_capability(dev2, EV_REL, REL_X); input_set_capability(dev2, EV_REL, REL_Y); if (priv->flags & ALPS_DUALPOINT_WITH_PRESSURE) { input_set_capability(dev2, EV_ABS, ABS_PRESSURE); input_set_abs_params(dev2, ABS_PRESSURE, 0, 127, 0, 0); } input_set_capability(dev2, EV_KEY, BTN_LEFT); input_set_capability(dev2, EV_KEY, BTN_RIGHT); input_set_capability(dev2, EV_KEY, BTN_MIDDLE); __set_bit(INPUT_PROP_POINTER, dev2->propbit); __set_bit(INPUT_PROP_POINTING_STICK, dev2->propbit); error = input_register_device(dev2); if (error) { psmouse_err(psmouse, "failed to register trackstick device: %d\n", error); input_free_device(dev2); goto init_fail; } priv->dev2 = dev2; } priv->psmouse = psmouse; INIT_DELAYED_WORK(&priv->dev3_register_work, alps_register_bare_ps2_mouse); psmouse->protocol_handler = alps_process_byte; psmouse->poll = alps_poll; psmouse->disconnect = alps_disconnect; psmouse->reconnect = alps_reconnect; psmouse->pktsize = priv->proto_version == ALPS_PROTO_V4 ? 8 : 6; /* We are having trouble resyncing ALPS touchpads so disable it for now */ psmouse->resync_time = 0; /* Allow 2 invalid packets without resetting device */ psmouse->resetafter = psmouse->pktsize * 2; return 0; init_fail: psmouse_reset(psmouse); /* * Even though we did not allocate psmouse->private we do free * it here. */ kfree(psmouse->private); psmouse->private = NULL; return error; } int alps_detect(struct psmouse *psmouse, bool set_properties) { struct alps_data *priv; int error; error = alps_identify(psmouse, NULL); if (error) return error; /* * ALPS cs19 is a trackpoint-only device, and uses different * protocol than DualPoint ones, so we return -EINVAL here and let * trackpoint.c drive this device. If the trackpoint driver is not * enabled, the device will fall back to a bare PS/2 mouse. * If ps2_command() fails here, we depend on the immediately * followed psmouse_reset() to reset the device to normal state. */ if (alps_is_cs19_trackpoint(psmouse)) { psmouse_dbg(psmouse, "ALPS CS19 trackpoint-only device detected, ignoring\n"); return -EINVAL; } /* * Reset the device to make sure it is fully operational: * on some laptops, like certain Dell Latitudes, we may * fail to properly detect presence of trackstick if device * has not been reset. */ psmouse_reset(psmouse); priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; error = alps_identify(psmouse, priv); if (error) { kfree(priv); return error; } if (set_properties) { psmouse->vendor = "ALPS"; psmouse->name = priv->flags & ALPS_DUALPOINT ? "DualPoint TouchPad" : "GlidePoint"; psmouse->model = priv->proto_version; } else { /* * Destroy alps_data structure we allocated earlier since * this was just a "trial run". Otherwise we'll keep it * to be used by alps_init() which has to be called if * we succeed and set_properties is true. */ kfree(priv); psmouse->private = NULL; } return 0; }
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2026-10-10