Input: psmouse - add support for IBM TrackPoint devices.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 147 insertions, 0 deletions

diff --git a/drivers/input/mouse/trackpoint.h b/drivers/input/mouse/trackpoint.h
new file mode 100644
index 000000000000..9857d8b6ad66
--- /dev/null
+++ b/drivers/input/mouse/trackpoint.h
@@ -0,0 +1,147 @@
+/*
+ * IBM TrackPoint PS/2 mouse driver
+ *
+ * Stephen Evanchik <evanchsa@gmail.com>
+ *
+ * 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.
+ */
+
+#ifndef _TRACKPOINT_H
+#define _TRACKPOINT_H
+
+/*
+ * These constants are from the TrackPoint System
+ * Engineering documentation Version 4 from IBM Watson
+ * research:
+ *      http://wwwcssrv.almaden.ibm.com/trackpoint/download.html
+ */
+
+#define TP_COMMAND              0xE2    /* Commands start with this */
+
+#define TP_READ_ID              0xE1    /* Sent for device identification */
+#define TP_MAGIC_IDENT          0x01    /* Sent after a TP_READ_ID followed */
+                                        /* by the firmware ID */
+
+
+/*
+ * Commands
+ */
+#define TP_RECALIB              0x51    /* Recalibrate */
+#define TP_POWER_DOWN           0x44    /* Can only be undone through HW reset */
+#define TP_EXT_DEV              0x21    /* Determines if external device is connected (RO) */
+#define TP_EXT_BTN              0x4B    /* Read extended button status */
+#define TP_POR                  0x7F    /* Execute Power on Reset */
+#define TP_POR_RESULTS          0x25    /* Read Power on Self test results */
+#define TP_DISABLE_EXT          0x40    /* Disable external pointing device */
+#define TP_ENABLE_EXT           0x41    /* Enable external pointing device */
+
+/*
+ * Mode manipulation
+ */
+#define TP_SET_SOFT_TRANS       0x4E    /* Set mode */
+#define TP_CANCEL_SOFT_TRANS    0xB9    /* Cancel mode */
+#define TP_SET_HARD_TRANS       0x45    /* Mode can only be set */
+
+
+/*
+ * Register oriented commands/properties
+ */
+#define TP_WRITE_MEM            0x81
+#define TP_READ_MEM             0x80    /* Not used in this implementation */
+
+/*
+* RAM Locations for properties
+ */
+#define TP_SENS                 0x4A    /* Sensitivity */
+#define TP_MB                   0x4C    /* Read Middle Button Status (RO) */
+#define TP_INERTIA              0x4D    /* Negative Inertia */
+#define TP_SPEED                0x60    /* Speed of TP Cursor */
+#define TP_REACH                0x57    /* Backup for Z-axis press */
+#define TP_DRAGHYS              0x58    /* Drag Hysteresis */
+                                        /* (how hard it is to drag */
+                                        /* with Z-axis pressed) */
+
+#define TP_MINDRAG              0x59    /* Minimum amount of force needed */
+                                        /* to trigger dragging */
+
+#define TP_THRESH               0x5C    /* Minimum value for a Z-axis press */
+#define TP_UP_THRESH            0x5A    /* Used to generate a 'click' on Z-axis */
+#define TP_Z_TIME               0x5E    /* How sharp of a press */
+#define TP_JENKS_CURV           0x5D    /* Minimum curvature for double click */
+
+/*
+ * Toggling Flag bits
+ */
+#define TP_TOGGLE               0x47    /* Toggle command */
+
+#define TP_TOGGLE_MB            0x23    /* Disable/Enable Middle Button */
+#define TP_MASK_MB                      0x01
+#define TP_TOGGLE_EXT_DEV       0x23    /* Toggle external device */
+#define TP_MASK_EXT_DEV                 0x02
+#define TP_TOGGLE_DRIFT         0x23    /* Drift Correction */
+#define TP_MASK_DRIFT                   0x80
+#define TP_TOGGLE_BURST         0x28    /* Burst Mode */
+#define TP_MASK_BURST                   0x80
+#define TP_TOGGLE_PTSON         0x2C    /* Press to Select */
+#define TP_MASK_PTSON                   0x01
+#define TP_TOGGLE_HARD_TRANS    0x2C    /* Alternate method to set Hard Transparency */
+#define TP_MASK_HARD_TRANS              0x80
+#define TP_TOGGLE_TWOHAND       0x2D    /* Two handed */
+#define TP_MASK_TWOHAND                 0x01
+#define TP_TOGGLE_STICKY_TWO    0x2D    /* Sticky two handed */
+#define TP_MASK_STICKY_TWO              0x04
+#define TP_TOGGLE_SKIPBACK      0x2D    /* Suppress movement after drag release */
+#define TP_MASK_SKIPBACK                0x08
+#define TP_TOGGLE_SOURCE_TAG    0x20    /* Bit 3 of the first packet will be set to
+                                           to the origin of the packet (external or TP) */
+#define TP_MASK_SOURCE_TAG              0x80
+#define TP_TOGGLE_EXT_TAG       0x22    /* Bit 3 of the first packet coming from the
+                                           external device will be forced to 1 */
+#define TP_MASK_EXT_TAG                 0x04
+
+
+/* Power on Self Test Results */
+#define TP_POR_SUCCESS          0x3B
+
+/*
+ * Default power on values
+ */
+#define TP_DEF_SENS             0x80
+#define TP_DEF_INERTIA          0x06
+#define TP_DEF_SPEED            0x61
+#define TP_DEF_REACH            0x0A
+
+#define TP_DEF_DRAGHYS          0xFF
+#define TP_DEF_MINDRAG          0x14
+
+#define TP_DEF_THRESH           0x08
+#define TP_DEF_UP_THRESH        0xFF
+#define TP_DEF_Z_TIME           0x26
+#define TP_DEF_JENKS_CURV       0x87
+
+/* Toggles */
+#define TP_DEF_MB               0x00
+#define TP_DEF_PTSON            0x00
+#define TP_DEF_SKIPBACK         0x00
+#define TP_DEF_EXT_DEV          0x01
+
+#define MAKE_PS2_CMD(params, results, cmd) ((params<<12) | (results<<8) | (cmd))
+
+struct trackpoint_data
+{
+        unsigned char sensitivity, speed, inertia, reach;
+        unsigned char draghys, mindrag;
+        unsigned char thresh, upthresh;
+        unsigned char ztime, jenks;
+
+        unsigned char press_to_select;
+        unsigned char skipback;
+
+        unsigned char ext_dev;
+};
+
+extern int trackpoint_detect(struct psmouse *psmouse, int set_properties);
+
+#endif /* _TRACKPOINT_H */