init android origin source code

1 files changed, 344 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/drivers/input/mouse/trackpoint.c b/ANDROID_3.4.5/drivers/input/mouse/trackpoint.c
new file mode 100644
index 00000000..f3102494
--- /dev/null
+++ b/ANDROID_3.4.5/drivers/input/mouse/trackpoint.c
@@ -0,0 +1,344 @@
+/*
+ * 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/slab.h>
+#include <linux/delay.h>
+#include <linux/serio.h>
+#include <linux/module.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 char value;
+	int err;
+
+	err = kstrtou8(buf, 10, &value);
+	if (err)
+		return err;
+
+	*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 int value;
+	int err;
+
+	err = kstrtouint(buf, 10, &value);
+	if (err)
+		return err;
+
+	if (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 int trackpoint_start_protocol(struct psmouse *psmouse, unsigned char *firmware_id)
+{
+	unsigned char param[2] = { 0 };
+
+	if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
+		return -1;
+
+	if (param[0] != TP_MAGIC_IDENT)
+		return -1;
+
+	if (firmware_id)
+		*firmware_id = param[1];
+
+	return 0;
+}
+
+static int trackpoint_sync(struct psmouse *psmouse)
+{
+	struct trackpoint_data *tp = psmouse->private;
+	unsigned char toggle;
+
+	/* 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;
+}
+
+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_reconnect(struct psmouse *psmouse)
+{
+	if (trackpoint_start_protocol(psmouse, NULL))
+		return -1;
+
+	if (trackpoint_sync(psmouse))
+		return -1;
+
+	return 0;
+}
+
+int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
+{
+	struct ps2dev *ps2dev = &psmouse->ps2dev;
+	unsigned char firmware_id;
+	unsigned char button_info;
+	int error;
+
+	if (trackpoint_start_protocol(psmouse, &firmware_id))
+		return -1;
+
+	if (!set_properties)
+		return 0;
+
+	if (trackpoint_read(&psmouse->ps2dev, TP_EXT_BTN, &button_info)) {
+		psmouse_warn(psmouse, "failed to get extended button data\n");
+		button_info = 0;
+	}
+
+	psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL);
+	if (!psmouse->private)
+		return -ENOMEM;
+
+	psmouse->vendor = "IBM";
+	psmouse->name = "TrackPoint";
+
+	psmouse->reconnect = trackpoint_reconnect;
+	psmouse->disconnect = trackpoint_disconnect;
+
+	if ((button_info & 0x0f) >= 3)
+		__set_bit(BTN_MIDDLE, psmouse->dev->keybit);
+
+	trackpoint_defaults(psmouse->private);
+	trackpoint_sync(psmouse);
+
+	error = sysfs_create_group(&ps2dev->serio->dev.kobj, &trackpoint_attr_group);
+	if (error) {
+		psmouse_err(psmouse,
+			    "failed to create sysfs attributes, error: %d\n",
+			    error);
+		kfree(psmouse->private);
+		psmouse->private = NULL;
+		return -1;
+	}
+
+	psmouse_info(psmouse,
+		     "IBM TrackPoint firmware: 0x%02x, buttons: %d/%d\n",
+		     firmware_id,
+		     (button_info & 0xf0) >> 4, button_info & 0x0f);
+
+	return 0;
+}
+