From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/input/mouse/alps.c | 477 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 477 insertions(+) create mode 100644 drivers/input/mouse/alps.c (limited to 'drivers/input/mouse/alps.c') diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c new file mode 100644 index 00000000000..1f85a9718c8 --- /dev/null +++ b/drivers/input/mouse/alps.c @@ -0,0 +1,477 @@ +/* + * ALPS touchpad PS/2 mouse driver + * + * Copyright (c) 2003 Neil Brown + * Copyright (c) 2003 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_DUALPOINT 0x01 +#define ALPS_WHEEL 0x02 +#define ALPS_FW_BK 0x04 +#define ALPS_4BTN 0x08 +#define ALPS_OLDPROTO 0x10 +#define ALPS_PASS 0x20 + +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 }, /* 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, 0 }, + { { 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; + + 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]; + } + + 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) { + input_report_key(dev, BTN_FORWARD, packet[0] & 0x10); + input_report_key(dev, BTN_BACK, packet[2] & 0x04); + } + + 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; + unsigned char param[3]; + 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_command(ps2dev, param, 0x0300); + + 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; + + 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 " 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) { + 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"; + if (model->flags & ALPS_DUALPOINT) + psmouse->name = "DualPoint TouchPad"; + else + psmouse->name = "GlidePoint"; + psmouse->model = version; + } + return 0; +} + -- cgit v1.2.3-70-g09d2