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path: root/drivers/input/mouse/alps.c
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Diffstat (limited to 'drivers/input/mouse/alps.c')
-rw-r--r--drivers/input/mouse/alps.c477
1 files changed, 477 insertions, 0 deletions
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 <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 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;
+}
+
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