--- /dev/null
+/*
+ * 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.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#include <linux/delay.h>
+#include <linux/serio.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/input.h>
+#include <linux/libps2.h>
+#include <linux/proc_fs.h>
+#include <asm/uaccess.h>
+#include "psmouse.h"
+#include "trackpoint.h"
+
+/*
+ * Device IO: read, write and toggle bit
+ */
+static int trackpoint_read(struct ps2dev *ps2dev, unsigned char loc, unsigned char *results)
+{
+ if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
+ ps2_command(ps2dev, results, MAKE_PS2_CMD(0, 1, loc))) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int trackpoint_write(struct ps2dev *ps2dev, unsigned char loc, unsigned char val)
+{
+ if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_WRITE_MEM)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, val))) {
+ return -1;
+ }
+
+ return 0;
+}
+
+static int trackpoint_toggle_bit(struct ps2dev *ps2dev, unsigned char loc, unsigned char mask)
+{
+ /* Bad things will happen if the loc param isn't in this range */
+ if (loc < 0x20 || loc >= 0x2F)
+ return -1;
+
+ if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_TOGGLE)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, loc)) ||
+ ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, mask))) {
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/*
+ * Trackpoint-specific attributes
+ */
+struct trackpoint_attr_data {
+ size_t field_offset;
+ unsigned char command;
+ unsigned char mask;
+ unsigned char inverted;
+};
+
+static ssize_t trackpoint_show_int_attr(struct psmouse *psmouse, void *data, char *buf)
+{
+ struct trackpoint_data *tp = psmouse->private;
+ struct trackpoint_attr_data *attr = data;
+ unsigned char value = *(unsigned char *)((char *)tp + attr->field_offset);
+
+ if (attr->inverted)
+ value = !value;
+
+ return sprintf(buf, "%u\n", value);
+}
+
+static ssize_t trackpoint_set_int_attr(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ struct trackpoint_data *tp = psmouse->private;
+ struct trackpoint_attr_data *attr = data;
+ unsigned char *field = (unsigned char *)((char *)tp + attr->field_offset);
+ unsigned long value;
+ char *rest;
+
+ value = simple_strtoul(buf, &rest, 10);
+ if (*rest || value > 255)
+ return -EINVAL;
+
+ *field = value;
+ trackpoint_write(&psmouse->ps2dev, attr->command, value);
+
+ return count;
+}
+
+#define TRACKPOINT_INT_ATTR(_name, _command) \
+ static struct trackpoint_attr_data trackpoint_attr_##_name = { \
+ .field_offset = offsetof(struct trackpoint_data, _name), \
+ .command = _command, \
+ }; \
+ PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
+ &trackpoint_attr_##_name, \
+ trackpoint_show_int_attr, trackpoint_set_int_attr)
+
+static ssize_t trackpoint_set_bit_attr(struct psmouse *psmouse, void *data,
+ const char *buf, size_t count)
+{
+ struct trackpoint_data *tp = psmouse->private;
+ struct trackpoint_attr_data *attr = data;
+ unsigned char *field = (unsigned char *)((char *)tp + attr->field_offset);
+ unsigned long value;
+ char *rest;
+
+ value = simple_strtoul(buf, &rest, 10);
+ if (*rest || value > 1)
+ return -EINVAL;
+
+ if (attr->inverted)
+ value = !value;
+
+ if (*field != value) {
+ *field = value;
+ trackpoint_toggle_bit(&psmouse->ps2dev, attr->command, attr->mask);
+ }
+
+ return count;
+}
+
+
+#define TRACKPOINT_BIT_ATTR(_name, _command, _mask, _inv) \
+ static struct trackpoint_attr_data trackpoint_attr_##_name = { \
+ .field_offset = offsetof(struct trackpoint_data, _name), \
+ .command = _command, \
+ .mask = _mask, \
+ .inverted = _inv, \
+ }; \
+ PSMOUSE_DEFINE_ATTR(_name, S_IWUSR | S_IRUGO, \
+ &trackpoint_attr_##_name, \
+ trackpoint_show_int_attr, trackpoint_set_bit_attr)
+
+TRACKPOINT_INT_ATTR(sensitivity, TP_SENS);
+TRACKPOINT_INT_ATTR(speed, TP_SPEED);
+TRACKPOINT_INT_ATTR(inertia, TP_INERTIA);
+TRACKPOINT_INT_ATTR(reach, TP_REACH);
+TRACKPOINT_INT_ATTR(draghys, TP_DRAGHYS);
+TRACKPOINT_INT_ATTR(mindrag, TP_MINDRAG);
+TRACKPOINT_INT_ATTR(thresh, TP_THRESH);
+TRACKPOINT_INT_ATTR(upthresh, TP_UP_THRESH);
+TRACKPOINT_INT_ATTR(ztime, TP_Z_TIME);
+TRACKPOINT_INT_ATTR(jenks, TP_JENKS_CURV);
+
+TRACKPOINT_BIT_ATTR(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON, 0);
+TRACKPOINT_BIT_ATTR(skipback, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK, 0);
+TRACKPOINT_BIT_ATTR(ext_dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV, 1);
+
+static struct attribute *trackpoint_attrs[] = {
+ &psmouse_attr_sensitivity.dattr.attr,
+ &psmouse_attr_speed.dattr.attr,
+ &psmouse_attr_inertia.dattr.attr,
+ &psmouse_attr_reach.dattr.attr,
+ &psmouse_attr_draghys.dattr.attr,
+ &psmouse_attr_mindrag.dattr.attr,
+ &psmouse_attr_thresh.dattr.attr,
+ &psmouse_attr_upthresh.dattr.attr,
+ &psmouse_attr_ztime.dattr.attr,
+ &psmouse_attr_jenks.dattr.attr,
+ &psmouse_attr_press_to_select.dattr.attr,
+ &psmouse_attr_skipback.dattr.attr,
+ &psmouse_attr_ext_dev.dattr.attr,
+ NULL
+};
+
+static struct attribute_group trackpoint_attr_group = {
+ .attrs = trackpoint_attrs,
+};
+
+static void trackpoint_disconnect(struct psmouse *psmouse)
+{
+ sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, &trackpoint_attr_group);
+
+ kfree(psmouse->private);
+ psmouse->private = NULL;
+}
+
+static int trackpoint_sync(struct psmouse *psmouse)
+{
+ unsigned char toggle;
+ struct trackpoint_data *tp = psmouse->private;
+
+ if (!tp)
+ return -1;
+
+ /* Disable features that may make device unusable with this driver */
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, &toggle);
+ if (toggle & TP_MASK_TWOHAND)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND, TP_MASK_TWOHAND);
+
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, &toggle);
+ if (toggle & TP_MASK_SOURCE_TAG)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG, TP_MASK_SOURCE_TAG);
+
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_MB, &toggle);
+ if (toggle & TP_MASK_MB)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_MB, TP_MASK_MB);
+
+ /* Push the config to the device */
+ trackpoint_write(&psmouse->ps2dev, TP_SENS, tp->sensitivity);
+ trackpoint_write(&psmouse->ps2dev, TP_INERTIA, tp->inertia);
+ trackpoint_write(&psmouse->ps2dev, TP_SPEED, tp->speed);
+
+ trackpoint_write(&psmouse->ps2dev, TP_REACH, tp->reach);
+ trackpoint_write(&psmouse->ps2dev, TP_DRAGHYS, tp->draghys);
+ trackpoint_write(&psmouse->ps2dev, TP_MINDRAG, tp->mindrag);
+
+ trackpoint_write(&psmouse->ps2dev, TP_THRESH, tp->thresh);
+ trackpoint_write(&psmouse->ps2dev, TP_UP_THRESH, tp->upthresh);
+
+ trackpoint_write(&psmouse->ps2dev, TP_Z_TIME, tp->ztime);
+ trackpoint_write(&psmouse->ps2dev, TP_JENKS_CURV, tp->jenks);
+
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_PTSON, &toggle);
+ if (((toggle & TP_MASK_PTSON) == TP_MASK_PTSON) != tp->press_to_select)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_PTSON, TP_MASK_PTSON);
+
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, &toggle);
+ if (((toggle & TP_MASK_SKIPBACK) == TP_MASK_SKIPBACK) != tp->skipback)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK);
+
+ trackpoint_read(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, &toggle);
+ if (((toggle & TP_MASK_EXT_DEV) == TP_MASK_EXT_DEV) != tp->ext_dev)
+ trackpoint_toggle_bit(&psmouse->ps2dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV);
+
+ return 0;
+}
+
+static void trackpoint_defaults(struct trackpoint_data *tp)
+{
+ tp->press_to_select = TP_DEF_PTSON;
+ tp->sensitivity = TP_DEF_SENS;
+ tp->speed = TP_DEF_SPEED;
+ tp->reach = TP_DEF_REACH;
+
+ tp->draghys = TP_DEF_DRAGHYS;
+ tp->mindrag = TP_DEF_MINDRAG;
+
+ tp->thresh = TP_DEF_THRESH;
+ tp->upthresh = TP_DEF_UP_THRESH;
+
+ tp->ztime = TP_DEF_Z_TIME;
+ tp->jenks = TP_DEF_JENKS_CURV;
+
+ tp->inertia = TP_DEF_INERTIA;
+ tp->skipback = TP_DEF_SKIPBACK;
+ tp->ext_dev = TP_DEF_EXT_DEV;
+}
+
+int trackpoint_detect(struct psmouse *psmouse, int set_properties)
+{
+ struct trackpoint_data *priv;
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ unsigned char firmware_id;
+ unsigned char button_info;
+ unsigned char param[2];
+
+ param[0] = param[1] = 0;
+
+ if (ps2_command(ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
+ return -1;
+
+ if (param[0] != TP_MAGIC_IDENT)
+ return -1;
+
+ if (!set_properties)
+ return 0;
+
+ firmware_id = param[1];
+
+ if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
+ printk(KERN_WARNING "trackpoint.c: failed to get extended button data\n");
+ button_info = 0;
+ }
+
+ psmouse->private = priv = kcalloc(1, sizeof(struct trackpoint_data), GFP_KERNEL);
+ if (!priv)
+ return -1;
+
+ psmouse->vendor = "IBM";
+ psmouse->name = "TrackPoint";
+
+ psmouse->reconnect = trackpoint_sync;
+ psmouse->disconnect = trackpoint_disconnect;
+
+ trackpoint_defaults(priv);
+ trackpoint_sync(psmouse);
+
+ sysfs_create_group(&ps2dev->serio->dev.kobj, &trackpoint_attr_group);
+
+ printk(KERN_INFO "IBM TrackPoint firmware: 0x%02x, buttons: %d/%d\n",
+ firmware_id, (button_info & 0xf0) >> 4, button_info & 0x0f);
+
+ return 0;
+}
+
git://git.onelab.eu / linux-2.6.git / blobdiff