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!

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 0000000..1f85a97
--- /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;
+}
+