Input: Add Fujitsu Lifebook B-series touchscreen driver.

From: Kenan Esau <kenan.esau@conan.de>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 126 insertions, 0 deletions

diff --git a/drivers/input/mouse/lifebook.c b/drivers/input/mouse/lifebook.c
new file mode 100644
index 000000000000..5b8883857b80
--- /dev/null
+++ b/drivers/input/mouse/lifebook.c
@@ -0,0 +1,126 @@
+/*
+ * Fujitsu B-series Lifebook PS/2 TouchScreen driver
+ *
+ * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz>
+ * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de>
+ *
+ * TouchScreen detection, absolute mode setting and packet layout is taken from
+ * Harald Hoyer's description of the device.
+ *
+ * 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 <linux/dmi.h>
+
+#include "psmouse.h"
+#include "lifebook.h"
+
+static int max_y = 1024;
+
+
+static struct dmi_system_id lifebook_dmi_table[] = {
+       {
+               .ident = "Fujitsu Siemens Lifebook B-Sereis",
+               .matches = {
+                       DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"),
+               },
+       },
+       { }
+};
+
+
+static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse, struct pt_regs *regs)
+{
+        unsigned char *packet = psmouse->packet;
+        struct input_dev *dev = &psmouse->dev;
+
+        if ( psmouse->pktcnt != 3 )
+                return PSMOUSE_GOOD_DATA;
+
+        input_regs(dev, regs);
+
+        /* calculate X and Y */
+        if ((packet[0] & 0x08) == 0x00) {
+                input_report_abs(dev, ABS_X,
+                                 (packet[1] | ((packet[0] & 0x30) << 4)));
+                input_report_abs(dev, ABS_Y,
+                                 max_y - (packet[2] | ((packet[0] & 0xC0) << 2)));
+        } else {
+                input_report_rel(dev, REL_X, 
+                                ((packet[0] & 0x10) ? packet[1]-256 : packet[1]));
+                input_report_rel(dev, REL_Y, 
+                                (- (int)((packet[0] & 0x20) ? packet[2]-256 : packet[2])));
+        }
+
+        input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
+        input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
+        input_report_key(dev, BTN_TOUCH, packet[0] & 0x04);
+
+        input_sync(dev);
+
+        return PSMOUSE_FULL_PACKET;
+}
+
+static int lifebook_initialize(struct psmouse *psmouse)
+{
+        struct ps2dev *ps2dev = &psmouse->ps2dev;
+        unsigned char param;
+
+        if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_DISABLE))
+                return -1;
+
+        if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_RESET_BAT))
+                return -1;
+
+        /* 
+           Enable absolute output -- ps2_command fails always but if
+           you leave this call out the touchsreen will never send
+           absolute coordinates
+        */ 
+        param = 0x07;
+        ps2_command(ps2dev, &param, PSMOUSE_CMD_SETRES);
+
+        psmouse->set_rate(psmouse, psmouse->rate);
+        psmouse->set_resolution(psmouse, psmouse->resolution);
+        
+        if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE))
+                return -1;
+
+        return 0;
+}
+
+static void lifebook_disconnect(struct psmouse *psmouse)
+{
+        psmouse_reset(psmouse);
+}
+
+int lifebook_detect(struct psmouse *psmouse, unsigned int max_proto, 
+                    int set_properties)
+{
+        if (!dmi_check_system(lifebook_dmi_table) && 
+            (max_proto != PSMOUSE_LIFEBOOK) )
+                return -1;
+
+        if (set_properties) {
+                psmouse->vendor = "Fujitsu Lifebook";
+                psmouse->name = "TouchScreen";
+                psmouse->dev.evbit[0] = BIT(EV_ABS) | BIT(EV_KEY) | BIT(EV_REL);
+                psmouse->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
+                psmouse->dev.keybit[LONG(BTN_TOUCH)] = BIT(BTN_TOUCH);
+                psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
+                input_set_abs_params(&psmouse->dev, ABS_X, 0, 1024, 0, 0);
+                input_set_abs_params(&psmouse->dev, ABS_Y, 0, 1024, 0, 0);
+
+                psmouse->protocol_handler = lifebook_process_byte;
+                psmouse->disconnect = lifebook_disconnect;
+                psmouse->reconnect  = lifebook_initialize;
+                psmouse->pktsize = 3;
+        }
+
+        return lifebook_initialize(psmouse);
+}