/* * ALPS touchpad PS/2 mouse driver * * Copyright (c) 2003 Neil Brown * Copyright (c) 2003-2005 Peter Osterlund * Copyright (c) 2004 Dmitry Torokhov * Copyright (c) 2005 Vojtech Pavlik * * ALPS detection, tap switching and status querying info is taken from * tpconfig utility (by C. Scott Ananian and Bruce Kall). * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. */ #include #include #include #include "psmouse.h" #include "alps.h" #undef DEBUG #ifdef DEBUG #define dbg(format, arg...) printk(KERN_INFO "alps.c: " format "\n", ## arg) #else #define dbg(format, arg...) do {} while (0) #endif #define ALPS_OLDPROTO 0x01 /* old style input */ #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 */ static const struct alps_model_info alps_model_data[] = { { { 0x32, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Toshiba Salellite Pro M10 */ { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */ { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, { { 0x60, 0x03, 0xc8 }, 0xf8, 0xf8, 0 }, /* HP ze1115 */ { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Fujitsu Siemens S6010 */ { { 0x63, 0x02, 0x3c }, 0x8f, 0x8f, ALPS_WHEEL }, /* Toshiba Satellite S2400-103 */ { { 0x63, 0x02, 0x50 }, 0xef, 0xef, ALPS_FW_BK_1 }, /* NEC Versa L320 */ { { 0x63, 0x02, 0x64 }, 0xf8, 0xf8, 0 }, { { 0x63, 0x03, 0xc8 }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D800 */ { { 0x73, 0x00, 0x0a }, 0xf8, 0xf8, ALPS_DUALPOINT }, /* ThinkPad R61 8918-5QG */ { { 0x73, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, { { 0x73, 0x02, 0x14 }, 0xf8, 0xf8, ALPS_FW_BK_2 }, /* Ahtec Laptop */ { { 0x20, 0x02, 0x0e }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, /* XXX */ { { 0x22, 0x02, 0x0a }, 0xf8, 0xf8, ALPS_PASS | ALPS_DUALPOINT }, { { 0x22, 0x02, 0x14 }, 0xff, 0xff, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude D600 */ { { 0x62, 0x02, 0x14 }, 0xcf, 0xcf, ALPS_PASS | ALPS_DUALPOINT }, /* Dell Latitude E6500 */ { { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FOUR_BUTTONS }, /* Dell Vostro 1400 */ }; /* * 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. */ /* * ALPS abolute Mode - new format * * byte 0: 1 ? ? ? 1 ? ? ? * byte 1: 0 x6 x5 x4 x3 x2 x1 x0 * byte 2: 0 x10 x9 x8 x7 ? fin ges * byte 3: 0 y9 y8 y7 1 M R L * byte 4: 0 y6 y5 y4 y3 y2 y1 y0 * byte 5: 0 z6 z5 z4 z3 z2 z1 z0 * * ?'s can have different meanings on different models, * such as wheel rotation, extra buttons, stick buttons * on a dualpoint, etc. */ static void alps_process_packet(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; const struct alps_model_info *model = priv->i; 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 ((packet[0] & 0xc8) == 0x08) { /* 3-byte PS/2 packet */ input_report_key(dev2, BTN_LEFT, packet[0] & 1); input_report_key(dev2, BTN_RIGHT, packet[0] & 2); input_report_key(dev2, BTN_MIDDLE, packet[0] & 4); input_report_rel(dev2, REL_X, packet[1] ? packet[1] - ((packet[0] << 4) & 0x100) : 0); input_report_rel(dev2, REL_Y, packet[2] ? ((packet[0] << 3) & 0x100) - packet[2] : 0); input_sync(dev2); return; } if (model->flags & ALPS_OLDPROTO) { 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 (model->flags & ALPS_FW_BK_1) { back = packet[0] & 0x10; forward = packet[2] & 4; } if (model->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 ((model->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)); input_report_key(dev2, BTN_LEFT, left); input_report_key(dev2, BTN_RIGHT, right); input_report_key(dev2, BTN_MIDDLE, middle); input_sync(dev); input_sync(dev2); return; } input_report_key(dev, BTN_LEFT, left); input_report_key(dev, BTN_RIGHT, right); input_report_key(dev, BTN_MIDDLE, 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 (model->flags & ALPS_WHEEL) input_report_rel(dev, REL_WHEEL, ((packet[2] << 1) & 0x08) - ((packet[0] >> 4) & 0x07)); if (model->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { input_report_key(dev, BTN_FORWARD, forward); input_report_key(dev, BTN_BACK, back); } if (model->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 psmouse_ret_t alps_process_byte(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ if (psmouse->pktcnt == 3) { alps_process_packet(psmouse); return PSMOUSE_FULL_PACKET; } return PSMOUSE_GOOD_DATA; } if ((psmouse->packet[0] & priv->i->mask0) != priv->i->byte0) return PSMOUSE_BAD_DATA; /* Bytes 2 - 6 should have 0 in the highest bit */ if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= 6 && (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) return PSMOUSE_BAD_DATA; if (psmouse->pktcnt == 6) { alps_process_packet(psmouse); return PSMOUSE_FULL_PACKET; } return PSMOUSE_GOOD_DATA; } static const struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version) { struct ps2dev *ps2dev = &psmouse->ps2dev; static const unsigned char rates[] = { 0, 10, 20, 40, 60, 80, 100, 200 }; unsigned char param[4]; int i; /* * First try "E6 report". * ALPS should return 0,0,10 or 0,0,100 */ param[0] = 0; if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11)) return NULL; param[0] = param[1] = param[2] = 0xff; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) return NULL; dbg("E6 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); if (param[0] != 0 || param[1] != 0 || (param[2] != 10 && param[2] != 100)) return NULL; /* * Now try "E7 report". Allowed responses are in * alps_model_data[].signature */ param[0] = 0; if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE21)) return NULL; param[0] = param[1] = param[2] = 0xff; if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) return NULL; dbg("E7 report: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); if (version) { for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++) /* empty */; *version = (param[0] << 8) | (param[1] << 4) | i; } for (i = 0; i < ARRAY_SIZE(alps_model_data); i++) if (!memcmp(param, alps_model_data[i].signature, sizeof(alps_model_data[i].signature))) return alps_model_data + i; return NULL; } /* * 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(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(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(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETPOLL); } static int alps_get_status(struct psmouse *psmouse, char *param) { struct ps2dev *ps2dev = &psmouse->ps2dev; /* Get status: 0xF5 0xF5 0xF5 0xE9 */ 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, param, PSMOUSE_CMD_GETINFO)) return -1; dbg("Status: %2.2x %2.2x %2.2x", param[0], param[1], param[2]); 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[6]; bool poll_failed; if (priv->i->flags & ALPS_PASS) alps_passthrough_mode(psmouse, true); poll_failed = ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0; if (priv->i->flags & ALPS_PASS) alps_passthrough_mode(psmouse, false); if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->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(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; const struct alps_model_info *model = priv->i; if ((model->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, true)) { return -1; } if (alps_tap_mode(psmouse, true)) { printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n"); return -1; } if (alps_absolute_mode(psmouse)) { printk(KERN_ERR "alps.c: Failed to enable absolute mode\n"); return -1; } if ((model->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, false)) { return -1; } /* ALPS needs stream mode, otherwise it won't report any data */ if (ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_SETSTREAM)) { printk(KERN_ERR "alps.c: Failed to enable stream mode\n"); return -1; } return 0; } static int alps_reconnect(struct psmouse *psmouse) { const struct alps_model_info *model; psmouse_reset(psmouse); model = alps_get_model(psmouse, NULL); if (!model) return -1; return alps_hw_init(psmouse); } static void alps_disconnect(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; psmouse_reset(psmouse); input_unregister_device(priv->dev2); kfree(priv); } int alps_init(struct psmouse *psmouse) { struct alps_data *priv; const struct alps_model_info *model; struct input_dev *dev1 = psmouse->dev, *dev2; int version; priv = kzalloc(sizeof(struct alps_data), GFP_KERNEL); dev2 = input_allocate_device(); if (!priv || !dev2) goto init_fail; priv->dev2 = dev2; psmouse->private = priv; model = alps_get_model(psmouse, &version); if (!model) goto init_fail; priv->i = model; if (alps_hw_init(psmouse)) 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); input_set_abs_params(dev1, ABS_X, 0, 1023, 0, 0); input_set_abs_params(dev1, ABS_Y, 0, 767, 0, 0); input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); if (model->flags & ALPS_WHEEL) { dev1->evbit[BIT_WORD(EV_REL)] |= BIT_MASK(EV_REL); dev1->relbit[BIT_WORD(REL_WHEEL)] |= BIT_MASK(REL_WHEEL); } if (model->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 (model->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 { dev1->keybit[BIT_WORD(BTN_MIDDLE)] |= BIT_MASK(BTN_MIDDLE); } snprintf(priv->phys, sizeof(priv->phys), "%s/input1", psmouse->ps2dev.serio->phys); dev2->phys = priv->phys; dev2->name = (model->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse"; dev2->id.bustype = BUS_I8042; dev2->id.vendor = 0x0002; dev2->id.product = PSMOUSE_ALPS; dev2->id.version = 0x0000; dev2->dev.parent = &psmouse->ps2dev.serio->dev; dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT); if (input_register_device(priv->dev2)) goto init_fail; psmouse->protocol_handler = alps_process_byte; psmouse->poll = alps_poll; psmouse->disconnect = alps_disconnect; psmouse->reconnect = alps_reconnect; psmouse->pktsize = 6; /* We are having trouble resyncing ALPS touchpads so disable it for now */ psmouse->resync_time = 0; return 0; init_fail: psmouse_reset(psmouse); input_free_device(dev2); kfree(priv); psmouse->private = NULL; return -1; } int alps_detect(struct psmouse *psmouse, bool set_properties) { int version; const struct alps_model_info *model; model = alps_get_model(psmouse, &version); if (!model) return -1; if (set_properties) { psmouse->vendor = "ALPS"; psmouse->name = model->flags & ALPS_DUALPOINT ? "DualPoint TouchPad" : "GlidePoint"; psmouse->model = version; } return 0; }