[1/1] : input: add support for VirtualBox touchscreen emulation to the Lifebook driver

Commit Message

Michael Thayer Feb. 23, 2010, 11:13 a.m. UTC

None

Patch

--- lifebook.c	2010-02-23 12:01:32.941643681 +0100
+++ lifebook-vbox.c	2010-02-23 11:44:57.831664482 +0100
@@ -1,6 +1,8 @@ 
 /*
  * Fujitsu B-series Lifebook PS/2 TouchScreen driver
+ * Also used for Oracle VirtualBox mouse integration
  *
+ * Copyright (c) 2010 Oracle.  All rights reserved.
  * Copyright (c) 2005 Vojtech Pavlik <[e-mail]>
  * Copyright (c) 2005 Kenan Esau <[e-mail]>
  *
@@ -41,6 +43,15 @@  static int lifebook_set_6byte_proto(cons
 	return 0;
 }
 
+static bool lifebook_use_vbox_proto;
+
+static int lifebook_set_vbox_proto(const struct dmi_system_id *d)
+{
+	lifebook_use_6byte_proto = true;
+	lifebook_use_vbox_proto = true;
+	return 0;
+}
+
 static const struct dmi_system_id lifebook_dmi_table[] = {
 	{
 		.ident = "FLORA-ie 55mi",
@@ -115,6 +126,13 @@  static const struct dmi_system_id lifebo
 			DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"),
 		},
 	},
+	{
+		.ident = "VirtualBox",
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "VirtualBox"),
+		},
+		.callback = lifebook_set_vbox_proto,
+	},
 	{ }
 };
 
@@ -180,6 +198,21 @@  static psmouse_ret_t lifebook_process_by
 				((packet[0] & 0x10) ? packet[1] - 256 : packet[1]));
 			input_report_rel(dev2, REL_Y,
 				 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2]));
+			if (lifebook_use_vbox_proto && !(packet[0] & 0x04)) {
+				unsigned btn = (packet[0] >> 6);
+
+				input_report_key(dev2, BTN_MIDDLE, btn == 1);
+				input_report_key(dev2, BTN_SIDE, btn == 2);
+				input_report_key(dev2, BTN_EXTRA, btn == 3);
+			}
+			if (lifebook_use_vbox_proto && (packet[0] & 0x04)) {
+				unsigned wheel = (packet[0] >> 6);
+
+				input_report_rel(dev2, REL_WHEEL,
+					(wheel == 0) - (wheel == 1));
+				input_report_rel(dev2, REL_HWHEEL,
+					(wheel == 2) - (wheel == 3));
+			}
 		}
 		input_report_key(dev2, BTN_LEFT, packet[0] & 0x01);
 		input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02);
@@ -200,11 +233,17 @@  static int lifebook_absolute_mode(struct
 	/*
 	   Enable absolute output -- ps2_command fails always but if
 	   you leave this call out the touchsreen will never send
-	   absolute coordinates
+	   absolute coordinates.
+
+	   Note that old versions of VirtualBox which didn't emulate the
+	   touchscreen also failed to return an error here, so if we are
+	   running inside VirtualBox, we actually have to make sure that
+	   the command fails!
 	*/
 	param = lifebook_use_6byte_proto ? 0x08 : 0x07;
-	ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
-
+	if (!ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES) &&
+		lifebook_use_vbox_proto)
+		return -1;
 	return 0;
 }
 
@@ -251,11 +290,14 @@  int lifebook_detect(struct psmouse *psmo
 		return -1;
 
 	if (set_properties) {
-		psmouse->vendor = "Fujitsu";
-		psmouse->name = "Lifebook TouchScreen";
+		psmouse->vendor = !lifebook_use_vbox_proto ? "Fujitsu" :
+			"VirtualBox";
+		psmouse->name =  !lifebook_use_vbox_proto ?
+			"Lifebook TouchScreen" :
+			"Mouse Integration" ;
 	}
 
-        return 0;
+	return 0;
 }
 
 static int lifebook_create_relative_device(struct psmouse *psmouse)
@@ -274,7 +316,8 @@  static int lifebook_create_relative_devi
 		 "%s/input1", psmouse->ps2dev.serio->phys);
 
 	dev2->phys = priv->phys;
-	dev2->name = "PS/2 Touchpad";
+	dev2->name = !lifebook_use_vbox_proto ? "PS/2 Touchpad" :
+		"Virtual PS/2 Mouse";
 	dev2->id.bustype = BUS_I8042;
 	dev2->id.vendor  = 0x0002;
 	dev2->id.product = PSMOUSE_LIFEBOOK;
@@ -285,6 +328,13 @@  static int lifebook_create_relative_devi
 	dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y);
 	dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) |
 		BIT_MASK(BTN_RIGHT);
+	if (lifebook_use_vbox_proto) {
+		__set_bit(BTN_MIDDLE, dev2->keybit);
+		__set_bit(REL_WHEEL, dev2->relbit);
+		__set_bit(REL_HWHEEL, dev2->relbit);
+		__set_bit(BTN_SIDE, dev2->keybit);
+		__set_bit(BTN_EXTRA, dev2->keybit);
+	}
 
 	error = input_register_device(priv->dev2);
 	if (error)
@@ -310,6 +360,14 @@  int lifebook_init(struct psmouse *psmous
 	dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY);
 	dev1->relbit[0] = 0;
 	dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+	/*
+	   The psmouse-base driver enables these bits, but if the X.Org
+	   evdev driver sees them it thinks we are a touchpad, not a
+	   touchscreen.
+	*/
+	psmouse->dev->keybit[BIT_WORD(BTN_MOUSE)] &= ~(BIT_MASK(BTN_LEFT) |
+		BIT_MASK(BTN_MIDDLE) | BIT_MASK(BTN_RIGHT));
+
 	input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0);
 	input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0);