Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 946 insertions, 0 deletions

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
new file mode 100644
index 000000000..eacc76d2a
--- /dev/null
+++ b/drivers/hid/hid-lenovo.c
@@ -0,0 +1,946 @@
+/*
+ *  HID driver for Lenovo:
+ *  - ThinkPad USB Keyboard with TrackPoint (tpkbd)
+ *  - ThinkPad Compact Bluetooth Keyboard with TrackPoint (cptkbd)
+ *  - ThinkPad Compact USB Keyboard with TrackPoint (cptkbd)
+ *
+ *  Copyright (c) 2012 Bernhard Seibold
+ *  Copyright (c) 2014 Jamie Lentin <jm@lentin.co.uk>
+ *
+ * Linux IBM/Lenovo Scrollpoint mouse driver:
+ * - IBM Scrollpoint III
+ * - IBM Scrollpoint Pro
+ * - IBM Scrollpoint Optical
+ * - IBM Scrollpoint Optical 800dpi
+ * - IBM Scrollpoint Optical 800dpi Pro
+ * - Lenovo Scrollpoint Optical
+ *
+ *  Copyright (c) 2012 Peter De Wachter <pdewacht@gmail.com>
+ *  Copyright (c) 2018 Peter Ganzhorn <peter.ganzhorn@gmail.com>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/sysfs.h>
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/input.h>
+#include <linux/leds.h>
+
+#include "hid-ids.h"
+
+struct lenovo_drvdata_tpkbd {
+	int led_state;
+	struct led_classdev led_mute;
+	struct led_classdev led_micmute;
+	int press_to_select;
+	int dragging;
+	int release_to_select;
+	int select_right;
+	int sensitivity;
+	int press_speed;
+};
+
+struct lenovo_drvdata_cptkbd {
+	u8 middlebutton_state; /* 0:Up, 1:Down (undecided), 2:Scrolling */
+	bool fn_lock;
+	int sensitivity;
+};
+
+#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
+
+static const __u8 lenovo_pro_dock_need_fixup_collection[] = {
+	0x05, 0x88,		/* Usage Page (Vendor Usage Page 0x88)	*/
+	0x09, 0x01,		/* Usage (Vendor Usage 0x01)		*/
+	0xa1, 0x01,		/* Collection (Application)		*/
+	0x85, 0x04,		/*  Report ID (4)			*/
+	0x19, 0x00,		/*  Usage Minimum (0)			*/
+	0x2a, 0xff, 0xff,	/*  Usage Maximum (65535)		*/
+};
+
+static __u8 *lenovo_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+		unsigned int *rsize)
+{
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_TPPRODOCK:
+		/* the fixups that need to be done:
+		 *   - get a reasonable usage max for the vendor collection
+		 *     0x8801 from the report ID 4
+		 */
+		if (*rsize >= 153 &&
+		    memcmp(&rdesc[140], lenovo_pro_dock_need_fixup_collection,
+			  sizeof(lenovo_pro_dock_need_fixup_collection)) == 0) {
+			rdesc[151] = 0x01;
+			rdesc[152] = 0x00;
+		}
+		break;
+	}
+	return rdesc;
+}
+
+static int lenovo_input_mapping_tpkbd(struct hid_device *hdev,
+		struct hid_input *hi, struct hid_field *field,
+		struct hid_usage *usage, unsigned long **bit, int *max)
+{
+	if (usage->hid == (HID_UP_BUTTON | 0x0010)) {
+		/* This sub-device contains trackpoint, mark it */
+		hid_set_drvdata(hdev, (void *)1);
+		map_key_clear(KEY_MICMUTE);
+		return 1;
+	}
+	return 0;
+}
+
+static int lenovo_input_mapping_cptkbd(struct hid_device *hdev,
+		struct hid_input *hi, struct hid_field *field,
+		struct hid_usage *usage, unsigned long **bit, int *max)
+{
+	/* HID_UP_LNVENDOR = USB, HID_UP_MSVENDOR = BT */
+	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR ||
+	    (usage->hid & HID_USAGE_PAGE) == HID_UP_LNVENDOR) {
+		switch (usage->hid & HID_USAGE) {
+		case 0x00f1: /* Fn-F4: Mic mute */
+			map_key_clear(KEY_MICMUTE);
+			return 1;
+		case 0x00f2: /* Fn-F5: Brightness down */
+			map_key_clear(KEY_BRIGHTNESSDOWN);
+			return 1;
+		case 0x00f3: /* Fn-F6: Brightness up */
+			map_key_clear(KEY_BRIGHTNESSUP);
+			return 1;
+		case 0x00f4: /* Fn-F7: External display (projector) */
+			map_key_clear(KEY_SWITCHVIDEOMODE);
+			return 1;
+		case 0x00f5: /* Fn-F8: Wireless */
+			map_key_clear(KEY_WLAN);
+			return 1;
+		case 0x00f6: /* Fn-F9: Control panel */
+			map_key_clear(KEY_CONFIG);
+			return 1;
+		case 0x00f8: /* Fn-F11: View open applications (3 boxes) */
+			map_key_clear(KEY_SCALE);
+			return 1;
+		case 0x00f9: /* Fn-F12: Open My computer (6 boxes) USB-only */
+			/* NB: This mapping is invented in raw_event below */
+			map_key_clear(KEY_FILE);
+			return 1;
+		case 0x00fa: /* Fn-Esc: Fn-lock toggle */
+			map_key_clear(KEY_FN_ESC);
+			return 1;
+		case 0x00fb: /* Middle mouse button (in native mode) */
+			map_key_clear(BTN_MIDDLE);
+			return 1;
+		}
+	}
+
+	/* Compatibility middle/wheel mappings should be ignored */
+	if (usage->hid == HID_GD_WHEEL)
+		return -1;
+	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON &&
+			(usage->hid & HID_USAGE) == 0x003)
+		return -1;
+	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
+			(usage->hid & HID_USAGE) == 0x238)
+		return -1;
+
+	/* Map wheel emulation reports: 0xffa1 = USB, 0xff10 = BT */
+	if ((usage->hid & HID_USAGE_PAGE) == 0xff100000 ||
+	    (usage->hid & HID_USAGE_PAGE) == 0xffa10000) {
+		field->flags |= HID_MAIN_ITEM_RELATIVE | HID_MAIN_ITEM_VARIABLE;
+		field->logical_minimum = -127;
+		field->logical_maximum = 127;
+
+		switch (usage->hid & HID_USAGE) {
+		case 0x0000:
+			hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
+			return 1;
+		case 0x0001:
+			hid_map_usage(hi, usage, bit, max, EV_REL, REL_WHEEL);
+			return 1;
+		default:
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static int lenovo_input_mapping_scrollpoint(struct hid_device *hdev,
+		struct hid_input *hi, struct hid_field *field,
+		struct hid_usage *usage, unsigned long **bit, int *max)
+{
+	if (usage->hid == HID_GD_Z) {
+		hid_map_usage(hi, usage, bit, max, EV_REL, REL_HWHEEL);
+		return 1;
+	}
+	return 0;
+}
+
+static int lenovo_input_mapping(struct hid_device *hdev,
+		struct hid_input *hi, struct hid_field *field,
+		struct hid_usage *usage, unsigned long **bit, int *max)
+{
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_TPKBD:
+		return lenovo_input_mapping_tpkbd(hdev, hi, field,
+							usage, bit, max);
+	case USB_DEVICE_ID_LENOVO_CUSBKBD:
+	case USB_DEVICE_ID_LENOVO_CBTKBD:
+		return lenovo_input_mapping_cptkbd(hdev, hi, field,
+							usage, bit, max);
+	case USB_DEVICE_ID_IBM_SCROLLPOINT_III:
+	case USB_DEVICE_ID_IBM_SCROLLPOINT_PRO:
+	case USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL:
+	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL:
+	case USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO:
+	case USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL:
+		return lenovo_input_mapping_scrollpoint(hdev, hi, field,
+							usage, bit, max);
+	default:
+		return 0;
+	}
+}
+
+#undef map_key_clear
+
+/* Send a config command to the keyboard */
+static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
+			unsigned char byte2, unsigned char byte3)
+{
+	int ret;
+	unsigned char *buf;
+
+	buf = kzalloc(3, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	buf[0] = 0x18;
+	buf[1] = byte2;
+	buf[2] = byte3;
+
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_CUSBKBD:
+		ret = hid_hw_raw_request(hdev, 0x13, buf, 3,
+					HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
+		break;
+	case USB_DEVICE_ID_LENOVO_CBTKBD:
+		ret = hid_hw_output_report(hdev, buf, 3);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	kfree(buf);
+
+	return ret < 0 ? ret : 0; /* BT returns 0, USB returns sizeof(buf) */
+}
+
+static void lenovo_features_set_cptkbd(struct hid_device *hdev)
+{
+	int ret;
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+
+	ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock);
+	if (ret)
+		hid_err(hdev, "Fn-lock setting failed: %d\n", ret);
+
+	ret = lenovo_send_cmd_cptkbd(hdev, 0x02, cptkbd_data->sensitivity);
+	if (ret)
+		hid_err(hdev, "Sensitivity setting failed: %d\n", ret);
+}
+
+static ssize_t attr_fn_lock_show_cptkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", cptkbd_data->fn_lock);
+}
+
+static ssize_t attr_fn_lock_store_cptkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value))
+		return -EINVAL;
+	if (value < 0 || value > 1)
+		return -EINVAL;
+
+	cptkbd_data->fn_lock = !!value;
+	lenovo_features_set_cptkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_sensitivity_show_cptkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n",
+		cptkbd_data->sensitivity);
+}
+
+static ssize_t attr_sensitivity_store_cptkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
+		return -EINVAL;
+
+	cptkbd_data->sensitivity = value;
+	lenovo_features_set_cptkbd(hdev);
+
+	return count;
+}
+
+
+static struct device_attribute dev_attr_fn_lock_cptkbd =
+	__ATTR(fn_lock, S_IWUSR | S_IRUGO,
+			attr_fn_lock_show_cptkbd,
+			attr_fn_lock_store_cptkbd);
+
+static struct device_attribute dev_attr_sensitivity_cptkbd =
+	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
+			attr_sensitivity_show_cptkbd,
+			attr_sensitivity_store_cptkbd);
+
+
+static struct attribute *lenovo_attributes_cptkbd[] = {
+	&dev_attr_fn_lock_cptkbd.attr,
+	&dev_attr_sensitivity_cptkbd.attr,
+	NULL
+};
+
+static const struct attribute_group lenovo_attr_group_cptkbd = {
+	.attrs = lenovo_attributes_cptkbd,
+};
+
+static int lenovo_raw_event(struct hid_device *hdev,
+			struct hid_report *report, u8 *data, int size)
+{
+	/*
+	 * Compact USB keyboard's Fn-F12 report holds down many other keys, and
+	 * its own key is outside the usage page range. Remove extra
+	 * keypresses and remap to inside usage page.
+	 */
+	if (unlikely(hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
+			&& size == 3
+			&& data[0] == 0x15
+			&& data[1] == 0x94
+			&& data[2] == 0x01)) {
+		data[1] = 0x00;
+		data[2] = 0x01;
+	}
+
+	return 0;
+}
+
+static int lenovo_event_cptkbd(struct hid_device *hdev,
+		struct hid_field *field, struct hid_usage *usage, __s32 value)
+{
+	struct lenovo_drvdata_cptkbd *cptkbd_data = hid_get_drvdata(hdev);
+
+	/* "wheel" scroll events */
+	if (usage->type == EV_REL && (usage->code == REL_WHEEL ||
+			usage->code == REL_HWHEEL)) {
+		/* Scroll events disable middle-click event */
+		cptkbd_data->middlebutton_state = 2;
+		return 0;
+	}
+
+	/* Middle click events */
+	if (usage->type == EV_KEY && usage->code == BTN_MIDDLE) {
+		if (value == 1) {
+			cptkbd_data->middlebutton_state = 1;
+		} else if (value == 0) {
+			if (cptkbd_data->middlebutton_state == 1) {
+				/* No scrolling inbetween, send middle-click */
+				input_event(field->hidinput->input,
+					EV_KEY, BTN_MIDDLE, 1);
+				input_sync(field->hidinput->input);
+				input_event(field->hidinput->input,
+					EV_KEY, BTN_MIDDLE, 0);
+				input_sync(field->hidinput->input);
+			}
+			cptkbd_data->middlebutton_state = 0;
+		}
+		return 1;
+	}
+
+	return 0;
+}
+
+static int lenovo_event(struct hid_device *hdev, struct hid_field *field,
+		struct hid_usage *usage, __s32 value)
+{
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_CUSBKBD:
+	case USB_DEVICE_ID_LENOVO_CBTKBD:
+		return lenovo_event_cptkbd(hdev, field, usage, value);
+	default:
+		return 0;
+	}
+}
+
+static int lenovo_features_set_tpkbd(struct hid_device *hdev)
+{
+	struct hid_report *report;
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[4];
+
+	report->field[0]->value[0]  = data_pointer->press_to_select   ? 0x01 : 0x02;
+	report->field[0]->value[0] |= data_pointer->dragging          ? 0x04 : 0x08;
+	report->field[0]->value[0] |= data_pointer->release_to_select ? 0x10 : 0x20;
+	report->field[0]->value[0] |= data_pointer->select_right      ? 0x80 : 0x40;
+	report->field[1]->value[0] = 0x03; // unknown setting, imitate windows driver
+	report->field[2]->value[0] = data_pointer->sensitivity;
+	report->field[3]->value[0] = data_pointer->press_speed;
+
+	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+	return 0;
+}
+
+static ssize_t attr_press_to_select_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->press_to_select);
+}
+
+static ssize_t attr_press_to_select_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value))
+		return -EINVAL;
+	if (value < 0 || value > 1)
+		return -EINVAL;
+
+	data_pointer->press_to_select = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_dragging_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->dragging);
+}
+
+static ssize_t attr_dragging_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value))
+		return -EINVAL;
+	if (value < 0 || value > 1)
+		return -EINVAL;
+
+	data_pointer->dragging = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_release_to_select_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->release_to_select);
+}
+
+static ssize_t attr_release_to_select_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value))
+		return -EINVAL;
+	if (value < 0 || value > 1)
+		return -EINVAL;
+
+	data_pointer->release_to_select = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_select_right_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", data_pointer->select_right);
+}
+
+static ssize_t attr_select_right_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value))
+		return -EINVAL;
+	if (value < 0 || value > 1)
+		return -EINVAL;
+
+	data_pointer->select_right = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_sensitivity_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n",
+		data_pointer->sensitivity);
+}
+
+static ssize_t attr_sensitivity_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
+		return -EINVAL;
+
+	data_pointer->sensitivity = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static ssize_t attr_press_speed_show_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	return snprintf(buf, PAGE_SIZE, "%u\n",
+		data_pointer->press_speed);
+}
+
+static ssize_t attr_press_speed_store_tpkbd(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t count)
+{
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int value;
+
+	if (kstrtoint(buf, 10, &value) || value < 1 || value > 255)
+		return -EINVAL;
+
+	data_pointer->press_speed = value;
+	lenovo_features_set_tpkbd(hdev);
+
+	return count;
+}
+
+static struct device_attribute dev_attr_press_to_select_tpkbd =
+	__ATTR(press_to_select, S_IWUSR | S_IRUGO,
+			attr_press_to_select_show_tpkbd,
+			attr_press_to_select_store_tpkbd);
+
+static struct device_attribute dev_attr_dragging_tpkbd =
+	__ATTR(dragging, S_IWUSR | S_IRUGO,
+			attr_dragging_show_tpkbd,
+			attr_dragging_store_tpkbd);
+
+static struct device_attribute dev_attr_release_to_select_tpkbd =
+	__ATTR(release_to_select, S_IWUSR | S_IRUGO,
+			attr_release_to_select_show_tpkbd,
+			attr_release_to_select_store_tpkbd);
+
+static struct device_attribute dev_attr_select_right_tpkbd =
+	__ATTR(select_right, S_IWUSR | S_IRUGO,
+			attr_select_right_show_tpkbd,
+			attr_select_right_store_tpkbd);
+
+static struct device_attribute dev_attr_sensitivity_tpkbd =
+	__ATTR(sensitivity, S_IWUSR | S_IRUGO,
+			attr_sensitivity_show_tpkbd,
+			attr_sensitivity_store_tpkbd);
+
+static struct device_attribute dev_attr_press_speed_tpkbd =
+	__ATTR(press_speed, S_IWUSR | S_IRUGO,
+			attr_press_speed_show_tpkbd,
+			attr_press_speed_store_tpkbd);
+
+static struct attribute *lenovo_attributes_tpkbd[] = {
+	&dev_attr_press_to_select_tpkbd.attr,
+	&dev_attr_dragging_tpkbd.attr,
+	&dev_attr_release_to_select_tpkbd.attr,
+	&dev_attr_select_right_tpkbd.attr,
+	&dev_attr_sensitivity_tpkbd.attr,
+	&dev_attr_press_speed_tpkbd.attr,
+	NULL
+};
+
+static const struct attribute_group lenovo_attr_group_tpkbd = {
+	.attrs = lenovo_attributes_tpkbd,
+};
+
+static enum led_brightness lenovo_led_brightness_get_tpkbd(
+			struct led_classdev *led_cdev)
+{
+	struct device *dev = led_cdev->dev->parent;
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	int led_nr = 0;
+
+	if (led_cdev == &data_pointer->led_micmute)
+		led_nr = 1;
+
+	return data_pointer->led_state & (1 << led_nr)
+				? LED_FULL
+				: LED_OFF;
+}
+
+static void lenovo_led_brightness_set_tpkbd(struct led_classdev *led_cdev,
+			enum led_brightness value)
+{
+	struct device *dev = led_cdev->dev->parent;
+	struct hid_device *hdev = to_hid_device(dev);
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+	struct hid_report *report;
+	int led_nr = 0;
+
+	if (led_cdev == &data_pointer->led_micmute)
+		led_nr = 1;
+
+	if (value == LED_OFF)
+		data_pointer->led_state &= ~(1 << led_nr);
+	else
+		data_pointer->led_state |= 1 << led_nr;
+
+	report = hdev->report_enum[HID_OUTPUT_REPORT].report_id_hash[3];
+	report->field[0]->value[0] = (data_pointer->led_state >> 0) & 1;
+	report->field[0]->value[1] = (data_pointer->led_state >> 1) & 1;
+	hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
+}
+
+static int lenovo_probe_tpkbd(struct hid_device *hdev)
+{
+	struct device *dev = &hdev->dev;
+	struct lenovo_drvdata_tpkbd *data_pointer;
+	size_t name_sz = strlen(dev_name(dev)) + 16;
+	char *name_mute, *name_micmute;
+	int i;
+	int ret;
+
+	/*
+	 * Only register extra settings against subdevice where input_mapping
+	 * set drvdata to 1, i.e. the trackpoint.
+	 */
+	if (!hid_get_drvdata(hdev))
+		return 0;
+
+	hid_set_drvdata(hdev, NULL);
+
+	/* Validate required reports. */
+	for (i = 0; i < 4; i++) {
+		if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
+			return -ENODEV;
+	}
+	if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
+		return -ENODEV;
+
+	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
+	if (ret)
+		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
+
+	data_pointer = devm_kzalloc(&hdev->dev,
+				    sizeof(struct lenovo_drvdata_tpkbd),
+				    GFP_KERNEL);
+	if (data_pointer == NULL) {
+		hid_err(hdev, "Could not allocate memory for driver data\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	// set same default values as windows driver
+	data_pointer->sensitivity = 0xa0;
+	data_pointer->press_speed = 0x38;
+
+	name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
+	name_micmute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
+	if (name_mute == NULL || name_micmute == NULL) {
+		hid_err(hdev, "Could not allocate memory for led data\n");
+		ret = -ENOMEM;
+		goto err;
+	}
+	snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(dev));
+	snprintf(name_micmute, name_sz, "%s:amber:micmute", dev_name(dev));
+
+	hid_set_drvdata(hdev, data_pointer);
+
+	data_pointer->led_mute.name = name_mute;
+	data_pointer->led_mute.brightness_get = lenovo_led_brightness_get_tpkbd;
+	data_pointer->led_mute.brightness_set = lenovo_led_brightness_set_tpkbd;
+	data_pointer->led_mute.dev = dev;
+	ret = led_classdev_register(dev, &data_pointer->led_mute);
+	if (ret < 0)
+		goto err;
+
+	data_pointer->led_micmute.name = name_micmute;
+	data_pointer->led_micmute.brightness_get =
+		lenovo_led_brightness_get_tpkbd;
+	data_pointer->led_micmute.brightness_set =
+		lenovo_led_brightness_set_tpkbd;
+	data_pointer->led_micmute.dev = dev;
+	ret = led_classdev_register(dev, &data_pointer->led_micmute);
+	if (ret < 0) {
+		led_classdev_unregister(&data_pointer->led_mute);
+		goto err;
+	}
+
+	lenovo_features_set_tpkbd(hdev);
+
+	return 0;
+err:
+	sysfs_remove_group(&hdev->dev.kobj, &lenovo_attr_group_tpkbd);
+	return ret;
+}
+
+static int lenovo_probe_cptkbd(struct hid_device *hdev)
+{
+	int ret;
+	struct lenovo_drvdata_cptkbd *cptkbd_data;
+
+	/* All the custom action happens on the USBMOUSE device for USB */
+	if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD
+			&& hdev->type != HID_TYPE_USBMOUSE) {
+		hid_dbg(hdev, "Ignoring keyboard half of device\n");
+		return 0;
+	}
+
+	cptkbd_data = devm_kzalloc(&hdev->dev,
+					sizeof(*cptkbd_data),
+					GFP_KERNEL);
+	if (cptkbd_data == NULL) {
+		hid_err(hdev, "can't alloc keyboard descriptor\n");
+		return -ENOMEM;
+	}
+	hid_set_drvdata(hdev, cptkbd_data);
+
+	/*
+	 * Tell the keyboard a driver understands it, and turn F7, F9, F11 into
+	 * regular keys
+	 */
+	ret = lenovo_send_cmd_cptkbd(hdev, 0x01, 0x03);
+	if (ret)
+		hid_warn(hdev, "Failed to switch F7/9/11 mode: %d\n", ret);
+
+	/* Switch middle button to native mode */
+	ret = lenovo_send_cmd_cptkbd(hdev, 0x09, 0x01);
+	if (ret)
+		hid_warn(hdev, "Failed to switch middle button: %d\n", ret);
+
+	/* Set keyboard settings to known state */
+	cptkbd_data->middlebutton_state = 0;
+	cptkbd_data->fn_lock = true;
+	cptkbd_data->sensitivity = 0x05;
+	lenovo_features_set_cptkbd(hdev);
+
+	ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_cptkbd);
+	if (ret)
+		hid_warn(hdev, "Could not create sysfs group: %d\n", ret);
+
+	return 0;
+}
+
+static int lenovo_probe(struct hid_device *hdev,
+		const struct hid_device_id *id)
+{
+	int ret;
+
+	ret = hid_parse(hdev);
+	if (ret) {
+		hid_err(hdev, "hid_parse failed\n");
+		goto err;
+	}
+
+	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
+	if (ret) {
+		hid_err(hdev, "hid_hw_start failed\n");
+		goto err;
+	}
+
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_TPKBD:
+		ret = lenovo_probe_tpkbd(hdev);
+		break;
+	case USB_DEVICE_ID_LENOVO_CUSBKBD:
+	case USB_DEVICE_ID_LENOVO_CBTKBD:
+		ret = lenovo_probe_cptkbd(hdev);
+		break;
+	default:
+		ret = 0;
+		break;
+	}
+	if (ret)
+		goto err_hid;
+
+	return 0;
+err_hid:
+	hid_hw_stop(hdev);
+err:
+	return ret;
+}
+
+static void lenovo_remove_tpkbd(struct hid_device *hdev)
+{
+	struct lenovo_drvdata_tpkbd *data_pointer = hid_get_drvdata(hdev);
+
+	/*
+	 * Only the trackpoint half of the keyboard has drvdata and stuff that
+	 * needs unregistering.
+	 */
+	if (data_pointer == NULL)
+		return;
+
+	sysfs_remove_group(&hdev->dev.kobj,
+			&lenovo_attr_group_tpkbd);
+
+	led_classdev_unregister(&data_pointer->led_micmute);
+	led_classdev_unregister(&data_pointer->led_mute);
+
+	hid_set_drvdata(hdev, NULL);
+}
+
+static void lenovo_remove_cptkbd(struct hid_device *hdev)
+{
+	sysfs_remove_group(&hdev->dev.kobj,
+			&lenovo_attr_group_cptkbd);
+}
+
+static void lenovo_remove(struct hid_device *hdev)
+{
+	switch (hdev->product) {
+	case USB_DEVICE_ID_LENOVO_TPKBD:
+		lenovo_remove_tpkbd(hdev);
+		break;
+	case USB_DEVICE_ID_LENOVO_CUSBKBD:
+	case USB_DEVICE_ID_LENOVO_CBTKBD:
+		lenovo_remove_cptkbd(hdev);
+		break;
+	}
+
+	hid_hw_stop(hdev);
+}
+
+static int lenovo_input_configured(struct hid_device *hdev,
+		struct hid_input *hi)
+{
+	switch (hdev->product) {
+		case USB_DEVICE_ID_LENOVO_TPKBD:
+		case USB_DEVICE_ID_LENOVO_CUSBKBD:
+		case USB_DEVICE_ID_LENOVO_CBTKBD:
+			if (test_bit(EV_REL, hi->input->evbit)) {
+				/* set only for trackpoint device */
+				__set_bit(INPUT_PROP_POINTER, hi->input->propbit);
+				__set_bit(INPUT_PROP_POINTING_STICK,
+						hi->input->propbit);
+			}
+			break;
+	}
+
+	return 0;
+}
+
+
+static const struct hid_device_id lenovo_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_III) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_PRO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_OPTICAL) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_IBM, USB_DEVICE_ID_IBM_SCROLLPOINT_800DPI_OPTICAL_PRO) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_SCROLLPOINT_OPTICAL) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(hid, lenovo_devices);
+
+static struct hid_driver lenovo_driver = {
+	.name = "lenovo",
+	.id_table = lenovo_devices,
+	.input_configured = lenovo_input_configured,
+	.input_mapping = lenovo_input_mapping,
+	.probe = lenovo_probe,
+	.remove = lenovo_remove,
+	.raw_event = lenovo_raw_event,
+	.event = lenovo_event,
+	.report_fixup = lenovo_report_fixup,
+};
+module_hid_driver(lenovo_driver);
+
+MODULE_LICENSE("GPL");