[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/input/mouse/trackpoint.c b/src/kernel/linux/v4.14/drivers/input/mouse/trackpoint.c
new file mode 100644
index 0000000..d68aba9
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/input/mouse/trackpoint.c
@@ -0,0 +1,488 @@
+/*
+ * 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 <linux/uaccess.h>
+#include "psmouse.h"
+#include "trackpoint.h"
+
+static const char * const trackpoint_variants[] = {
+ [TP_VARIANT_IBM] = "IBM",
+ [TP_VARIANT_ALPS] = "ALPS",
+ [TP_VARIANT_ELAN] = "Elan",
+ [TP_VARIANT_NXP] = "NXP",
+ [TP_VARIANT_JYT_SYNAPTICS] = "JYT_Synaptics",
+ [TP_VARIANT_SYNAPTICS] = "Synaptics",
+};
+
+/*
+ * Power-on Reset: Resets all trackpoint parameters, including RAM values,
+ * to defaults.
+ * Returns zero on success, non-zero on failure.
+ */
+static int trackpoint_power_on_reset(struct ps2dev *ps2dev)
+{
+ u8 results[2];
+ int tries = 0;
+
+ /* Issue POR command, and repeat up to once if 0xFC00 received */
+ do {
+ if (ps2_command(ps2dev, NULL, MAKE_PS2_CMD(0, 0, TP_COMMAND)) ||
+ ps2_command(ps2dev, results, MAKE_PS2_CMD(0, 2, TP_POR)))
+ return -1;
+ } while (results[0] == 0xFC && results[1] == 0x00 && ++tries < 2);
+
+ /* Check for success response -- 0xAA00 */
+ if (results[0] != 0xAA || results[1] != 0x00)
+ return -ENODEV;
+
+ return 0;
+}
+
+/*
+ * Device IO: read, write and toggle bit
+ */
+static int trackpoint_read(struct ps2dev *ps2dev, u8 loc, u8 *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, u8 loc, u8 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, u8 loc, u8 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;
+}
+
+static int trackpoint_update_bit(struct ps2dev *ps2dev,
+ u8 loc, u8 mask, u8 value)
+{
+ int retval = 0;
+ u8 data;
+
+ trackpoint_read(ps2dev, loc, &data);
+ if (((data & mask) == mask) != !!value)
+ retval = trackpoint_toggle_bit(ps2dev, loc, mask);
+
+ return retval;
+}
+
+/*
+ * Trackpoint-specific attributes
+ */
+struct trackpoint_attr_data {
+ size_t field_offset;
+ u8 command;
+ u8 mask;
+ bool inverted;
+ u8 power_on_default;
+};
+
+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;
+ u8 value = *(u8 *)((void *)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;
+ u8 *field = (void *)tp + attr->field_offset;
+ u8 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, _default) \
+ static struct trackpoint_attr_data trackpoint_attr_##_name = { \
+ .field_offset = offsetof(struct trackpoint_data, _name), \
+ .command = _command, \
+ .power_on_default = _default, \
+ }; \
+ 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;
+ bool *field = (void *)tp + attr->field_offset;
+ bool value;
+ int err;
+
+ err = kstrtobool(buf, &value);
+ if (err)
+ return err;
+
+ 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, _default) \
+static struct trackpoint_attr_data trackpoint_attr_##_name = { \
+ .field_offset = offsetof(struct trackpoint_data, \
+ _name), \
+ .command = _command, \
+ .mask = _mask, \
+ .inverted = _inv, \
+ .power_on_default = _default, \
+ }; \
+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, TP_DEF_SENS);
+TRACKPOINT_INT_ATTR(speed, TP_SPEED, TP_DEF_SPEED);
+TRACKPOINT_INT_ATTR(inertia, TP_INERTIA, TP_DEF_INERTIA);
+TRACKPOINT_INT_ATTR(reach, TP_REACH, TP_DEF_REACH);
+TRACKPOINT_INT_ATTR(draghys, TP_DRAGHYS, TP_DEF_DRAGHYS);
+TRACKPOINT_INT_ATTR(mindrag, TP_MINDRAG, TP_DEF_MINDRAG);
+TRACKPOINT_INT_ATTR(thresh, TP_THRESH, TP_DEF_THRESH);
+TRACKPOINT_INT_ATTR(upthresh, TP_UP_THRESH, TP_DEF_UP_THRESH);
+TRACKPOINT_INT_ATTR(ztime, TP_Z_TIME, TP_DEF_Z_TIME);
+TRACKPOINT_INT_ATTR(jenks, TP_JENKS_CURV, TP_DEF_JENKS_CURV);
+TRACKPOINT_INT_ATTR(drift_time, TP_DRIFT_TIME, TP_DEF_DRIFT_TIME);
+
+TRACKPOINT_BIT_ATTR(press_to_select, TP_TOGGLE_PTSON, TP_MASK_PTSON, false,
+ TP_DEF_PTSON);
+TRACKPOINT_BIT_ATTR(skipback, TP_TOGGLE_SKIPBACK, TP_MASK_SKIPBACK, false,
+ TP_DEF_SKIPBACK);
+TRACKPOINT_BIT_ATTR(ext_dev, TP_TOGGLE_EXT_DEV, TP_MASK_EXT_DEV, true,
+ TP_DEF_EXT_DEV);
+
+static bool trackpoint_is_attr_available(struct psmouse *psmouse,
+ struct attribute *attr)
+{
+ struct trackpoint_data *tp = psmouse->private;
+
+ return tp->variant_id == TP_VARIANT_IBM ||
+ attr == &psmouse_attr_sensitivity.dattr.attr ||
+ attr == &psmouse_attr_press_to_select.dattr.attr;
+}
+
+static umode_t trackpoint_is_attr_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct serio *serio = to_serio_port(dev);
+ struct psmouse *psmouse = serio_get_drvdata(serio);
+
+ return trackpoint_is_attr_available(psmouse, attr) ? attr->mode : 0;
+}
+
+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_drift_time.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 = {
+ .is_visible = trackpoint_is_attr_visible,
+ .attrs = trackpoint_attrs,
+};
+
+#define TRACKPOINT_UPDATE(_power_on, _psmouse, _tp, _name) \
+do { \
+ struct trackpoint_attr_data *_attr = &trackpoint_attr_##_name; \
+ \
+ if ((!_power_on || _tp->_name != _attr->power_on_default) && \
+ trackpoint_is_attr_available(_psmouse, \
+ &psmouse_attr_##_name.dattr.attr)) { \
+ if (!_attr->mask) \
+ trackpoint_write(&_psmouse->ps2dev, \
+ _attr->command, _tp->_name); \
+ else \
+ trackpoint_update_bit(&_psmouse->ps2dev, \
+ _attr->command, _attr->mask, \
+ _tp->_name); \
+ } \
+} while (0)
+
+#define TRACKPOINT_SET_POWER_ON_DEFAULT(_tp, _name) \
+do { \
+ _tp->_name = trackpoint_attr_##_name.power_on_default; \
+} while (0)
+
+static int trackpoint_start_protocol(struct psmouse *psmouse,
+ u8 *variant_id, u8 *firmware_id)
+{
+ u8 param[2] = { 0 };
+ int error;
+
+ error = ps2_command(&psmouse->ps2dev,
+ param, MAKE_PS2_CMD(0, 2, TP_READ_ID));
+ if (error)
+ return error;
+
+ switch (param[0]) {
+ case TP_VARIANT_IBM:
+ case TP_VARIANT_ALPS:
+ case TP_VARIANT_ELAN:
+ case TP_VARIANT_NXP:
+ if (variant_id)
+ *variant_id = param[0];
+ if (firmware_id)
+ *firmware_id = param[1];
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
+/*
+ * Write parameters to trackpad.
+ * in_power_on_state: Set to true if TP is in default / power-on state (ex. if
+ * power-on reset was run). If so, values will only be
+ * written to TP if they differ from power-on default.
+ */
+static int trackpoint_sync(struct psmouse *psmouse, bool in_power_on_state)
+{
+ struct trackpoint_data *tp = psmouse->private;
+
+ if (!in_power_on_state && tp->variant_id == TP_VARIANT_IBM) {
+ /*
+ * Disable features that may make device unusable
+ * with this driver.
+ */
+ trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_TWOHAND,
+ TP_MASK_TWOHAND, TP_DEF_TWOHAND);
+
+ trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_SOURCE_TAG,
+ TP_MASK_SOURCE_TAG, TP_DEF_SOURCE_TAG);
+
+ trackpoint_update_bit(&psmouse->ps2dev, TP_TOGGLE_MB,
+ TP_MASK_MB, TP_DEF_MB);
+ }
+
+ /*
+ * These properties can be changed in this driver. Only
+ * configure them if the values are non-default or if the TP is in
+ * an unknown state.
+ */
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, sensitivity);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, inertia);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, speed);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, reach);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, draghys);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, mindrag);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, thresh);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, upthresh);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, ztime);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, jenks);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, drift_time);
+
+ /* toggles */
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, press_to_select);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, skipback);
+ TRACKPOINT_UPDATE(in_power_on_state, psmouse, tp, ext_dev);
+
+ return 0;
+}
+
+static void trackpoint_defaults(struct trackpoint_data *tp)
+{
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, sensitivity);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, speed);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, reach);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, draghys);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, mindrag);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, thresh);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, upthresh);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, ztime);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, jenks);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, drift_time);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, inertia);
+
+ /* toggles */
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, press_to_select);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, skipback);
+ TRACKPOINT_SET_POWER_ON_DEFAULT(tp, ext_dev);
+}
+
+static void trackpoint_disconnect(struct psmouse *psmouse)
+{
+ device_remove_group(&psmouse->ps2dev.serio->dev,
+ &trackpoint_attr_group);
+
+ kfree(psmouse->private);
+ psmouse->private = NULL;
+}
+
+static int trackpoint_reconnect(struct psmouse *psmouse)
+{
+ struct trackpoint_data *tp = psmouse->private;
+ int error;
+ bool was_reset;
+
+ error = trackpoint_start_protocol(psmouse, NULL, NULL);
+ if (error)
+ return error;
+
+ was_reset = tp->variant_id == TP_VARIANT_IBM &&
+ trackpoint_power_on_reset(&psmouse->ps2dev) == 0;
+
+ error = trackpoint_sync(psmouse, was_reset);
+ if (error)
+ return error;
+
+ return 0;
+}
+
+int trackpoint_detect(struct psmouse *psmouse, bool set_properties)
+{
+ struct ps2dev *ps2dev = &psmouse->ps2dev;
+ struct trackpoint_data *tp;
+ u8 variant_id;
+ u8 firmware_id;
+ u8 button_info;
+ int error;
+
+ error = trackpoint_start_protocol(psmouse, &variant_id, &firmware_id);
+ if (error)
+ return error;
+
+ if (!set_properties)
+ return 0;
+
+ tp = kzalloc(sizeof(*tp), GFP_KERNEL);
+ if (!tp)
+ return -ENOMEM;
+
+ trackpoint_defaults(tp);
+ tp->variant_id = variant_id;
+ tp->firmware_id = firmware_id;
+
+ psmouse->private = tp;
+
+ psmouse->vendor = trackpoint_variants[variant_id];
+ psmouse->name = "TrackPoint";
+
+ psmouse->reconnect = trackpoint_reconnect;
+ psmouse->disconnect = trackpoint_disconnect;
+
+ if (variant_id != TP_VARIANT_IBM) {
+ /* Newer variants do not support extended button query. */
+ button_info = 0x33;
+ } else {
+ error = trackpoint_read(ps2dev, TP_EXT_BTN, &button_info);
+ if (error) {
+ psmouse_warn(psmouse,
+ "failed to get extended button data, assuming 3 buttons\n");
+ button_info = 0x33;
+ } else if (!button_info) {
+ psmouse_warn(psmouse,
+ "got 0 in extended button data, assuming 3 buttons\n");
+ button_info = 0x33;
+ }
+ }
+
+ if ((button_info & 0x0f) >= 3)
+ input_set_capability(psmouse->dev, EV_KEY, BTN_MIDDLE);
+
+ __set_bit(INPUT_PROP_POINTER, psmouse->dev->propbit);
+ __set_bit(INPUT_PROP_POINTING_STICK, psmouse->dev->propbit);
+
+ if (variant_id != TP_VARIANT_IBM ||
+ trackpoint_power_on_reset(ps2dev) != 0) {
+ /*
+ * Write defaults to TP if we did not reset the trackpoint.
+ */
+ trackpoint_sync(psmouse, false);
+ }
+
+ error = device_add_group(&ps2dev->serio->dev, &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,
+ "%s TrackPoint firmware: 0x%02x, buttons: %d/%d\n",
+ psmouse->vendor, firmware_id,
+ (button_info & 0xf0) >> 4, button_info & 0x0f);
+
+ return 0;
+}
+