diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 99d5876..0963a0d 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -63,6 +63,8 @@ static const struct alps_model_info alps_model_data[] = {
  	/* Dell Latitude E5500, E6400, E6500, Precision M4400 */
  	{ { 0x62, 0x02, 0x14 }, 0xcf, 0xcf,
  		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },
+	/* Dell Precision 4500 */
+	{ { 0x73, 0x02, 0x64 }, 0x80, 0x80, 0 },
  	{ { 0x73, 0x02, 0x50 }, 0xcf, 0xcf, ALPS_FOUR_BUTTONS },	  /* Dell Vostro 1400 */
  	{ { 0x52, 0x01, 0x14 }, 0xff, 0xff,
  		ALPS_PASS | ALPS_DUALPOINT | ALPS_PS2_INTERLEAVED },	  /* Toshiba Tecra A11-11L */
@@ -111,6 +113,77 @@ static const struct alps_model_info alps_model_data[] = {
   * on a dualpoint, etc.
   */

+
+/* Magic Sequence to enable Intellimouse Mode on Dell E2 Touchpads*/
+
+static int dell_e2_setup_intellimouse_mode(void *data)
+{
+	struct psmouse *psmouse = (struct psmouse *)(data);
+	struct ps2dev *ps2dev = &psmouse->ps2dev;
+	struct input_dev *dev = psmouse->dev;
+	unsigned char param[] = {0, 0, 0};
+
+	if (ps2_command(ps2dev, param, 0x00f5) ||
+		ps2_command(ps2dev, param, 0x00ea) ||
+		ps2_command(ps2dev, param, 0x00ec) ||
+		ps2_command(ps2dev, param, 0x00ec) ||
+		ps2_command(ps2dev, param, 0x00ec) ||
+		ps2_command(ps2dev, param, 0x03e9))
+			return -1;
+
+	dbg("alps:dell_e2_setup: param[0]: %x,"
+		"param[1]: %x, param[2]: %x\n", param[0],
+					param[1], param[2]);
+/* Check for supported model to continue */
+
+	if (!((param[0] == 0x88) && (param[1] == 0x07)
+		&& ((param[2] == 0x9D) || (param[2] == 0x9B))))
+		return -1;
+
+	if (ps2_command(ps2dev, NULL, 0x00ec) ||
+		ps2_command(ps2dev, NULL, 0x00f0) ||
+		ps2_command(ps2dev, NULL, 0x00f0) ||
+		ps2_command(ps2dev, NULL, 0x00f0) ||
+		ps2_command(ps2dev, NULL, 0x00f3) ||
+		ps2_command(ps2dev, NULL, 0x0028) ||
+		ps2_command(ps2dev, NULL, 0x00f0) ||
+		ps2_command(ps2dev, NULL, 0x00f6) ||
+		ps2_command(ps2dev, NULL, 0x00ea) ||
+		ps2_command(ps2dev, NULL, 0x00f4))
+			return -1;
+
+	__set_bit(BTN_MIDDLE, dev->keybit);
+	__set_bit(REL_WHEEL, dev->relbit);
+
+	psmouse->pktsize = 4;
+	psmouse->type = PSMOUSE_IMPS;
+
+	return 0;
+}
+
+static const struct alps_model_quirk alps_model_init_quirk_tbl[] = {
+
+	{ {0x73, 0x02, 0x64}, dell_e2_setup_intellimouse_mode }
+};
+
+static int alps_model_init_quirk(struct psmouse *psmouse,
+					const struct alps_model_info *model)
+{
+	int rc = 1;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(alps_model_init_quirk_tbl); i++) {
+		if (!memcmp(model->signature,
+			alps_model_init_quirk_tbl[i].signature,
+			    sizeof(alps_model_init_quirk_tbl[i].signature))) {
+				rc = alps_model_init_quirk_tbl[i].callback(psmouse);
+				break;
+		}
+	}
+
+	return rc;
+}
+
  static bool alps_is_valid_first_byte(const struct alps_model_info *model,
  				     unsigned char data)
  {
@@ -677,6 +750,14 @@ int alps_init(struct psmouse *psmouse)
  	if (alps_hw_init(psmouse))
  		goto init_fail;

+	if (!alps_model_init_quirk(psmouse, model)) {
+		printk(KERN_WARNING "alps.c: Enabled hardware quirk, falling back to psmouse-core\n");
+		input_free_device(dev2);
+		kfree(priv);
+		psmouse->private = NULL;
+		return 0;
+	}
+
  	/*
  	 * Undo part of setup done for us by psmouse core since touchpad
  	 * is not a relative device.
diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h
index 904ed8b..c54c5ea 100644
--- a/drivers/input/mouse/alps.h
+++ b/drivers/input/mouse/alps.h
@@ -26,6 +26,11 @@ struct alps_data {
  	struct timer_list timer;
  };

+struct alps_model_quirk {
+unsigned char signature[3];
+int (*callback)(void *data);
+};
+
  #ifdef CONFIG_MOUSE_PS2_ALPS
  int alps_detect(struct psmouse *psmouse, bool set_properties);
  int alps_init(struct psmouse *psmouse);
diff --git a/drivers/input/mouse/psmouse-base.c b/drivers/input/mouse/psmouse-base.c
index 979c502..9f65320 100644
--- a/drivers/input/mouse/psmouse-base.c
+++ b/drivers/input/mouse/psmouse-base.c
@@ -659,7 +659,8 @@ static int psmouse_extensions(struct psmouse *psmouse,
  		ps2_command(&psmouse->ps2dev, NULL, PSMOUSE_CMD_RESET_DIS);
  		if (alps_detect(psmouse, set_properties) == 0) {
  			if (!set_properties || alps_init(psmouse) == 0)
-				return PSMOUSE_ALPS;
+	/* If ALPS model quirk was applied, don't change the settings */
+				return psmouse->type ? psmouse->type : PSMOUSE_ALPS;
  /*
   * Init failed, try basic relative protocols
   */
