| /* |
| * ALPS touchpad PS/2 mouse driver |
| * |
| * Copyright (c) 2003 Neil Brown <neilb@cse.unsw.edu.au> |
| * Copyright (c) 2003 Peter Osterlund <petero2@telia.com> |
| * Copyright (c) 2004 Dmitry Torokhov <dtor@mail.ru> |
| * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> |
| * |
| * ALPS detection, tap switching and status querying info is taken from |
| * tpconfig utility (by C. Scott Ananian and Bruce Kall). |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| */ |
| |
| #include <linux/input.h> |
| #include <linux/serio.h> |
| #include <linux/libps2.h> |
| |
| #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_DUALPOINT 0x01 |
| #define ALPS_WHEEL 0x02 |
| #define ALPS_FW_BK_1 0x04 |
| #define ALPS_4BTN 0x08 |
| #define ALPS_OLDPROTO 0x10 |
| #define ALPS_PASS 0x20 |
| #define ALPS_FW_BK_2 0x40 |
| |
| static struct alps_model_info alps_model_data[] = { |
| { { 0x33, 0x02, 0x0a }, 0x88, 0xf8, ALPS_OLDPROTO }, /* UMAX-530T */ |
| { { 0x53, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, |
| { { 0x53, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, |
| { { 0x63, 0x02, 0x0a }, 0xf8, 0xf8, 0 }, |
| { { 0x63, 0x02, 0x14 }, 0xf8, 0xf8, 0 }, |
| { { 0x63, 0x02, 0x28 }, 0xf8, 0xf8, 0 }, |
| { { 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 }, /* Dell Latitude D800 */ |
| { { 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 */ |
| }; |
| |
| /* |
| * 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 pt_regs *regs) |
| { |
| 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; |
| |
| input_regs(dev, regs); |
| |
| 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 (priv->i->flags & ALPS_OLDPROTO) { |
| left = packet[2] & 0x08; |
| right = packet[2] & 0x10; |
| 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->i->flags & ALPS_FW_BK_1) { |
| back = packet[2] & 4; |
| forward = packet[0] & 0x10; |
| } |
| |
| if (priv->i->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; |
| |
| input_report_key(dev, BTN_LEFT, left); |
| input_report_key(dev, BTN_RIGHT, right); |
| input_report_key(dev, BTN_MIDDLE, middle); |
| |
| if ((priv->i->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_sync(dev); |
| input_sync(dev2); |
| return; |
| } |
| |
| /* 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->i->flags & ALPS_WHEEL) |
| input_report_rel(dev, REL_WHEEL, ((packet[0] >> 4) & 0x07) | ((packet[2] >> 2) & 0x08)); |
| |
| if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
| input_report_key(dev, BTN_FORWARD, forward); |
| input_report_key(dev, BTN_BACK, back); |
| } |
| |
| input_sync(dev); |
| } |
| |
| static psmouse_ret_t alps_process_byte(struct psmouse *psmouse, struct pt_regs *regs) |
| { |
| struct alps_data *priv = psmouse->private; |
| |
| if ((psmouse->packet[0] & 0xc8) == 0x08) { /* PS/2 packet */ |
| if (psmouse->pktcnt == 3) { |
| alps_process_packet(psmouse, regs); |
| 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, regs); |
| return PSMOUSE_FULL_PACKET; |
| } |
| |
| return PSMOUSE_GOOD_DATA; |
| } |
| |
| static struct alps_model_info *alps_get_model(struct psmouse *psmouse, int *version) |
| { |
| struct ps2dev *ps2dev = &psmouse->ps2dev; |
| 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]); |
| |
| for (i = 0; i < ARRAY_SIZE(rates) && param[2] != rates[i]; i++); |
| *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, int 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; |
| } |
| |
| static int alps_reconnect(struct psmouse *psmouse) |
| { |
| struct alps_data *priv = psmouse->private; |
| unsigned char param[4]; |
| int version; |
| |
| psmouse_reset(psmouse); |
| |
| if (!(priv->i = alps_get_model(psmouse, &version))) |
| return -1; |
| |
| if (priv->i->flags & ALPS_PASS && alps_passthrough_mode(psmouse, 1)) |
| return -1; |
| |
| if (alps_get_status(psmouse, param)) |
| return -1; |
| |
| if (!(param[0] & 0x04)) |
| alps_tap_mode(psmouse, 1); |
| |
| if (alps_absolute_mode(psmouse)) { |
| printk(KERN_ERR "alps.c: Failed to enable absolute mode\n"); |
| return -1; |
| } |
| |
| if (priv->i->flags == ALPS_PASS && alps_passthrough_mode(psmouse, 0)) |
| return -1; |
| |
| return 0; |
| } |
| |
| 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; |
| unsigned char param[4]; |
| int version; |
| |
| psmouse->private = priv = kmalloc(sizeof(struct alps_data), GFP_KERNEL); |
| if (!priv) |
| goto init_fail; |
| memset(priv, 0, sizeof(struct alps_data)); |
| |
| if (!(priv->i = alps_get_model(psmouse, &version))) |
| goto init_fail; |
| |
| if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 1)) |
| goto init_fail; |
| |
| if (alps_get_status(psmouse, param)) { |
| printk(KERN_ERR "alps.c: touchpad status report request failed\n"); |
| goto init_fail; |
| } |
| |
| if (param[0] & 0x04) { |
| printk(KERN_INFO "alps.c: Enabling hardware tapping\n"); |
| if (alps_tap_mode(psmouse, 1)) |
| printk(KERN_WARNING "alps.c: Failed to enable hardware tapping\n"); |
| } |
| |
| if (alps_absolute_mode(psmouse)) { |
| printk(KERN_ERR "alps.c: Failed to enable absolute mode\n"); |
| goto init_fail; |
| } |
| |
| if ((priv->i->flags & ALPS_PASS) && alps_passthrough_mode(psmouse, 0)) |
| goto init_fail; |
| |
| psmouse->dev.evbit[LONG(EV_KEY)] |= BIT(EV_KEY); |
| psmouse->dev.keybit[LONG(BTN_TOUCH)] |= BIT(BTN_TOUCH); |
| psmouse->dev.keybit[LONG(BTN_TOOL_FINGER)] |= BIT(BTN_TOOL_FINGER); |
| psmouse->dev.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); |
| |
| psmouse->dev.evbit[LONG(EV_ABS)] |= BIT(EV_ABS); |
| input_set_abs_params(&psmouse->dev, ABS_X, 0, 1023, 0, 0); |
| input_set_abs_params(&psmouse->dev, ABS_Y, 0, 767, 0, 0); |
| input_set_abs_params(&psmouse->dev, ABS_PRESSURE, 0, 127, 0, 0); |
| |
| if (priv->i->flags & ALPS_WHEEL) { |
| psmouse->dev.evbit[LONG(EV_REL)] |= BIT(EV_REL); |
| psmouse->dev.relbit[LONG(REL_WHEEL)] |= BIT(REL_WHEEL); |
| } |
| |
| if (priv->i->flags & (ALPS_FW_BK_1 | ALPS_FW_BK_2)) { |
| psmouse->dev.keybit[LONG(BTN_FORWARD)] |= BIT(BTN_FORWARD); |
| psmouse->dev.keybit[LONG(BTN_BACK)] |= BIT(BTN_BACK); |
| } |
| |
| sprintf(priv->phys, "%s/input1", psmouse->ps2dev.serio->phys); |
| priv->dev2.phys = priv->phys; |
| priv->dev2.name = (priv->i->flags & ALPS_DUALPOINT) ? "DualPoint Stick" : "PS/2 Mouse"; |
| priv->dev2.id.bustype = BUS_I8042; |
| priv->dev2.id.vendor = 0x0002; |
| priv->dev2.id.product = PSMOUSE_ALPS; |
| priv->dev2.id.version = 0x0000; |
| |
| priv->dev2.evbit[0] = BIT(EV_KEY) | BIT(EV_REL); |
| priv->dev2.relbit[LONG(REL_X)] |= BIT(REL_X) | BIT(REL_Y); |
| priv->dev2.keybit[LONG(BTN_LEFT)] |= BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT); |
| |
| input_register_device(&priv->dev2); |
| |
| printk(KERN_INFO "input: %s on %s\n", priv->dev2.name, psmouse->ps2dev.serio->phys); |
| |
| psmouse->protocol_handler = alps_process_byte; |
| psmouse->disconnect = alps_disconnect; |
| psmouse->reconnect = alps_reconnect; |
| psmouse->pktsize = 6; |
| |
| return 0; |
| |
| init_fail: |
| kfree(priv); |
| return -1; |
| } |
| |
| int alps_detect(struct psmouse *psmouse, int set_properties) |
| { |
| int version; |
| struct alps_model_info *model; |
| |
| if (!(model = alps_get_model(psmouse, &version))) |
| return -1; |
| |
| if (set_properties) { |
| psmouse->vendor = "ALPS"; |
| psmouse->name = model->flags & ALPS_DUALPOINT ? |
| "DualPoint TouchPad" : "GlidePoint"; |
| psmouse->model = version; |
| } |
| return 0; |
| } |
| |