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hid-lenovo.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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>
*/
/*
*/
#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 <linux/workqueue.h>
#include "hid-ids.h"
/* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
#define LENOVO_KEY_MICMUTE KEY_F20
struct lenovo_drvdata {
u8 led_report[3]; /* Must be first for proper alignment */
int led_state;
struct mutex led_report_mutex;
struct led_classdev led_mute;
struct led_classdev led_micmute;
struct work_struct fn_lock_sync_work;
struct hid_device *hdev;
int press_to_select;
int dragging;
int release_to_select;
int select_right;
int sensitivity;
int press_speed;
u8 middlebutton_state; /* 0:Up, 1:Down (undecided), 2:Scrolling */
bool fn_lock;
};
#define map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
#define TP10UBKBD_LED_OUTPUT_REPORT 9
#define TP10UBKBD_FN_LOCK_LED 0x54
#define TP10UBKBD_MUTE_LED 0x64
#define TP10UBKBD_MICMUTE_LED 0x74
#define TP10UBKBD_LED_OFF 1
#define TP10UBKBD_LED_ON 2
static int lenovo_led_set_tp10ubkbd(struct hid_device *hdev, u8 led_code,
enum led_brightness value)
{
struct lenovo_drvdata *data = hid_get_drvdata(hdev);
int ret;
mutex_lock(&data->led_report_mutex);
data->led_report[0] = TP10UBKBD_LED_OUTPUT_REPORT;
data->led_report[1] = led_code;
data->led_report[2] = value ? TP10UBKBD_LED_ON : TP10UBKBD_LED_OFF;
ret = hid_hw_raw_request(hdev, data->led_report[0], data->led_report, 3,
HID_OUTPUT_REPORT, HID_REQ_SET_REPORT);
if (ret != 3) {
if (ret != -ENODEV)
hid_err(hdev, "Set LED output report error: %d\n", ret);
ret = ret < 0 ? ret : -EIO;
} else {
ret = 0;
}
mutex_unlock(&data->led_report_mutex);
return ret;
}
static void lenovo_tp10ubkbd_sync_fn_lock(struct work_struct *work)
{
struct lenovo_drvdata *data =
container_of(work, struct lenovo_drvdata, fn_lock_sync_work);
lenovo_led_set_tp10ubkbd(data->hdev, TP10UBKBD_FN_LOCK_LED,
data->fn_lock);
}
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(LENOVO_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(LENOVO_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_tp10_ultrabook_kbd(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
{
/*
* The ThinkPad 10 Ultrabook Keyboard uses 0x000c0001 usage for
* a bunch of keys which have no standard consumer page code.
*/
if (usage->hid == 0x000c0001) {
switch (usage->usage_index) {
case 8: /* Fn-Esc: Fn-lock toggle */
map_key_clear(KEY_FN_ESC);
return 1;
case 9: /* Fn-F4: Mic mute */
map_key_clear(LENOVO_KEY_MICMUTE);
return 1;
case 10: /* Fn-F7: Control panel */
map_key_clear(KEY_CONFIG);
return 1;
case 11: /* Fn-F8: Search (magnifier glass) */
map_key_clear(KEY_SEARCH);
return 1;
case 12: /* Fn-F10: Open My computer (6 boxes) */
map_key_clear(KEY_FILE);
return 1;
}
}
/*
* The Ultrabook Keyboard sends a spurious F23 key-press when resuming
* from suspend and it does not actually have a F23 key, ignore it.
*/
if (usage->hid == 0x00070072)
return -1;
return 0;
}
static int lenovo_input_mapping_x1_tab_kbd(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
{
/*
* The ThinkPad X1 Tablet Thin Keyboard uses 0x000c0001 usage for
* a bunch of keys which have no standard consumer page code.
*/
if (usage->hid == 0x000c0001) {
switch (usage->usage_index) {
case 0: /* Fn-F10: Enable/disable bluetooth */
map_key_clear(KEY_BLUETOOTH);
return 1;
case 1: /* Fn-F11: Keyboard settings */
map_key_clear(KEY_KEYBOARD);
return 1;
case 2: /* Fn-F12: User function / Cortana */
map_key_clear(KEY_MACRO1);
return 1;
case 3: /* Fn-PrtSc: Snipping tool */
map_key_clear(KEY_SELECTIVE_SCREENSHOT);
return 1;
case 8: /* Fn-Esc: Fn-lock toggle */
map_key_clear(KEY_FN_ESC);
return 1;
case 9: /* Fn-F4: Mute/unmute microphone */
map_key_clear(KEY_MICMUTE);
return 1;
case 10: /* Fn-F9: Settings */
map_key_clear(KEY_CONFIG);
return 1;
case 13: /* Fn-F7: Manage external displays */
map_key_clear(KEY_SWITCHVIDEOMODE);
return 1;
case 14: /* Fn-F8: Enable/disable wifi */
map_key_clear(KEY_WLAN);
return 1;
}
}
if (usage->hid == (HID_UP_KEYBOARD | 0x009a)) {
map_key_clear(KEY_SYSRQ);
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);
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
usage, bit, max);
case USB_DEVICE_ID_LENOVO_X1_TAB:
return lenovo_input_mapping_x1_tab_kbd(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_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(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct hid_device *hdev = to_hid_device(dev);
struct lenovo_drvdata *data = hid_get_drvdata(hdev);
return snprintf(buf, PAGE_SIZE, "%u\n", data->fn_lock);
}
static ssize_t attr_fn_lock_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct hid_device *hdev = to_hid_device(dev);
struct lenovo_drvdata *data = hid_get_drvdata(hdev);
int value, ret;
if (kstrtoint(buf, 10, &value))
return -EINVAL;
if (value < 0 || value > 1)
return -EINVAL;
data->fn_lock = !!value;
switch (hdev->product) {
case USB_DEVICE_ID_LENOVO_CUSBKBD:
case USB_DEVICE_ID_LENOVO_CBTKBD:
lenovo_features_set_cptkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
ret = lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, value);
if (ret)
return ret;
break;
}
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_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_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 =
__ATTR(fn_lock, S_IWUSR | S_IRUGO,
attr_fn_lock_show,
attr_fn_lock_store);
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.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_tp10ubkbd(struct hid_device *hdev,
struct hid_field *field, struct hid_usage *usage, __s32 value)
{
struct lenovo_drvdata *data = hid_get_drvdata(hdev);
if (usage->type == EV_KEY && usage->code == KEY_FN_ESC && value == 1) {
/*
* The user has toggled the Fn-lock state. Toggle our own
* cached value of it and sync our value to the keyboard to
* ensure things are in sync (the sycning should be a no-op).
*/
data->fn_lock = !data->fn_lock;
schedule_work(&data->fn_lock_sync_work);
}
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_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)
{
if (!hid_get_drvdata(hdev))
return 0;
switch (hdev->product) {
case USB_DEVICE_ID_LENOVO_CUSBKBD:
case USB_DEVICE_ID_LENOVO_CBTKBD:
return lenovo_event_cptkbd(hdev, field, usage, value);
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
return lenovo_event_tp10ubkbd(hdev, field, usage, value);
default:
return 0;
}
}
static int lenovo_features_set_tpkbd(struct hid_device *hdev)
{
struct hid_report *report;
struct lenovo_drvdata *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 *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 *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 *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 *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 *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 *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 *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 *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 *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 *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 *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 *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 void lenovo_led_set_tpkbd(struct hid_device *hdev)
{
struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev);
struct hid_report *report;
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_led_brightness_set(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 *data_pointer = hid_get_drvdata(hdev);
u8 tp10ubkbd_led[] = { TP10UBKBD_MUTE_LED, TP10UBKBD_MICMUTE_LED };
int led_nr = 0;
int ret = 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;
switch (hdev->product) {
case USB_DEVICE_ID_LENOVO_TPKBD:
lenovo_led_set_tpkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
ret = lenovo_led_set_tp10ubkbd(hdev, tp10ubkbd_led[led_nr], value);
break;
}
return ret;
}
static int lenovo_register_leds(struct hid_device *hdev)
{
struct lenovo_drvdata *data = hid_get_drvdata(hdev);
size_t name_sz = strlen(dev_name(&hdev->dev)) + 16;
char *name_mute, *name_micm;
int ret;
name_mute = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
name_micm = devm_kzalloc(&hdev->dev, name_sz, GFP_KERNEL);
if (name_mute == NULL || name_micm == NULL) {
hid_err(hdev, "Could not allocate memory for led data\n");
return -ENOMEM;
}
snprintf(name_mute, name_sz, "%s:amber:mute", dev_name(&hdev->dev));
snprintf(name_micm, name_sz, "%s:amber:micmute", dev_name(&hdev->dev));
data->led_mute.name = name_mute;
data->led_mute.default_trigger = "audio-mute";
data->led_mute.brightness_set_blocking = lenovo_led_brightness_set;
data->led_mute.max_brightness = 1;
data->led_mute.flags = LED_HW_PLUGGABLE;
data->led_mute.dev = &hdev->dev;
ret = led_classdev_register(&hdev->dev, &data->led_mute);
if (ret < 0)
return ret;
data->led_micmute.name = name_micm;
data->led_micmute.default_trigger = "audio-micmute";
data->led_micmute.brightness_set_blocking = lenovo_led_brightness_set;
data->led_micmute.max_brightness = 1;
data->led_micmute.flags = LED_HW_PLUGGABLE;
data->led_micmute.dev = &hdev->dev;
ret = led_classdev_register(&hdev->dev, &data->led_micmute);
if (ret < 0) {
led_classdev_unregister(&data->led_mute);
return ret;
}
return 0;
}
static int lenovo_probe_tpkbd(struct hid_device *hdev)
{
struct lenovo_drvdata *data_pointer;
int i, 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),
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;
hid_set_drvdata(hdev, data_pointer);
ret = lenovo_register_leds(hdev);
if (ret)
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_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);