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|
/*
* HID driver for Asus notebook built-in keyboard.
* Fixes small logical maximum to match usage maximum.
*
* Currently supported devices are:
* EeeBook X205TA
* VivoBook E200HA
*
* Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
*
* This module based on hid-ortek by
* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
* Copyright (c) 2011 Jiri Kosina
*
* This module has been updated to add support for Asus i2c touchpad.
*
* Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
* Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
* Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@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/hid.h>
#include <linux/module.h>
#include <linux/input/mt.h>
#include "hid-ids.h"
MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
#define FEATURE_REPORT_ID 0x0d
#define INPUT_REPORT_ID 0x5d
#define FEATURE_KBD_REPORT_ID 0x5a
#define INPUT_REPORT_SIZE 28
#define FEATURE_KBD_REPORT_SIZE 16
#define SUPPORT_KBD_BACKLIGHT BIT(0)
#define MAX_CONTACTS 5
#define MAX_X 2794
#define MAX_Y 1758
#define MAX_TOUCH_MAJOR 8
#define MAX_PRESSURE 128
#define CONTACT_DATA_SIZE 5
#define BTN_LEFT_MASK 0x01
#define CONTACT_TOOL_TYPE_MASK 0x80
#define CONTACT_X_MSB_MASK 0xf0
#define CONTACT_Y_MSB_MASK 0x0f
#define CONTACT_TOUCH_MAJOR_MASK 0x07
#define CONTACT_PRESSURE_MASK 0x7f
#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
#define QUIRK_NO_INIT_REPORTS BIT(1)
#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
#define QUIRK_IS_MULTITOUCH BIT(3)
#define QUIRK_NO_CONSUMER_USAGES BIT(4)
#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
#define QUIRK_T100_KEYBOARD BIT(6)
#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
QUIRK_NO_INIT_REPORTS | \
QUIRK_NO_CONSUMER_USAGES)
#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
QUIRK_SKIP_INPUT_MAPPING | \
QUIRK_IS_MULTITOUCH)
#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
struct asus_kbd_leds {
struct led_classdev cdev;
struct hid_device *hdev;
struct work_struct work;
unsigned int brightness;
bool removed;
};
struct asus_drvdata {
unsigned long quirks;
struct input_dev *input;
struct asus_kbd_leds *kbd_backlight;
bool enable_backlight;
};
static void asus_report_contact_down(struct input_dev *input,
int toolType, u8 *data)
{
int touch_major, pressure;
int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
if (toolType == MT_TOOL_PALM) {
touch_major = MAX_TOUCH_MAJOR;
pressure = MAX_PRESSURE;
} else {
touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
pressure = data[4] & CONTACT_PRESSURE_MASK;
}
input_report_abs(input, ABS_MT_POSITION_X, x);
input_report_abs(input, ABS_MT_POSITION_Y, y);
input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
input_report_abs(input, ABS_MT_PRESSURE, pressure);
}
/* Required for Synaptics Palm Detection */
static void asus_report_tool_width(struct input_dev *input)
{
struct input_mt *mt = input->mt;
struct input_mt_slot *oldest;
int oldid, count, i;
oldest = NULL;
oldid = mt->trkid;
count = 0;
for (i = 0; i < mt->num_slots; ++i) {
struct input_mt_slot *ps = &mt->slots[i];
int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
if (id < 0)
continue;
if ((id - oldid) & TRKID_SGN) {
oldest = ps;
oldid = id;
}
count++;
}
if (oldest) {
input_report_abs(input, ABS_TOOL_WIDTH,
input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
}
}
static void asus_report_input(struct input_dev *input, u8 *data)
{
int i;
u8 *contactData = data + 2;
for (i = 0; i < MAX_CONTACTS; i++) {
bool down = !!(data[1] & BIT(i+3));
int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
MT_TOOL_PALM : MT_TOOL_FINGER;
input_mt_slot(input, i);
input_mt_report_slot_state(input, toolType, down);
if (down) {
asus_report_contact_down(input, toolType, contactData);
contactData += CONTACT_DATA_SIZE;
}
}
input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
asus_report_tool_width(input);
input_mt_sync_frame(input);
input_sync(input);
}
static int asus_raw_event(struct hid_device *hdev,
struct hid_report *report, u8 *data, int size)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
data[0] == INPUT_REPORT_ID &&
size == INPUT_REPORT_SIZE) {
asus_report_input(drvdata->input, data);
return 1;
}
return 0;
}
static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
{
unsigned char *dmabuf;
int ret;
dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
if (!dmabuf)
return -ENOMEM;
ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
buf_size, HID_FEATURE_REPORT,
HID_REQ_SET_REPORT);
kfree(dmabuf);
return ret;
}
static int asus_kbd_init(struct hid_device *hdev)
{
u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
int ret;
ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
if (ret < 0)
hid_err(hdev, "Asus failed to send init command: %d\n", ret);
return ret;
}
static int asus_kbd_get_functions(struct hid_device *hdev,
unsigned char *kbd_func)
{
u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
u8 *readbuf;
int ret;
ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
if (ret < 0) {
hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
return ret;
}
readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
if (!readbuf)
return -ENOMEM;
ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
HID_REQ_GET_REPORT);
if (ret < 0) {
hid_err(hdev, "Asus failed to request functions: %d\n", ret);
kfree(readbuf);
return ret;
}
*kbd_func = readbuf[6];
kfree(readbuf);
return ret;
}
static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
cdev);
if (led->brightness == brightness)
return;
led->brightness = brightness;
schedule_work(&led->work);
}
static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
{
struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
cdev);
return led->brightness;
}
static void asus_kbd_backlight_work(struct work_struct *work)
{
struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
int ret;
if (led->removed)
return;
buf[4] = led->brightness;
ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
if (ret < 0)
hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
}
static int asus_kbd_register_leds(struct hid_device *hdev)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
unsigned char kbd_func;
int ret;
/* Initialize keyboard */
ret = asus_kbd_init(hdev);
if (ret < 0)
return ret;
/* Get keyboard functions */
ret = asus_kbd_get_functions(hdev, &kbd_func);
if (ret < 0)
return ret;
/* Check for backlight support */
if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
return -ENODEV;
drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
sizeof(struct asus_kbd_leds),
GFP_KERNEL);
if (!drvdata->kbd_backlight)
return -ENOMEM;
drvdata->kbd_backlight->removed = false;
drvdata->kbd_backlight->brightness = 0;
drvdata->kbd_backlight->hdev = hdev;
drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
drvdata->kbd_backlight->cdev.max_brightness = 3;
drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
if (ret < 0) {
/* No need to have this still around */
devm_kfree(&hdev->dev, drvdata->kbd_backlight);
}
return ret;
}
static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
{
struct input_dev *input = hi->input;
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
int ret;
input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);
__set_bit(BTN_LEFT, input->keybit);
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);
if (ret) {
hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
return ret;
}
}
drvdata->input = input;
if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
hid_warn(hdev, "Failed to initialize backlight.\n");
return 0;
}
#define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
max, EV_KEY, (c))
static int asus_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit,
int *max)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
/* Don't map anything from the HID report.
* We do it all manually in asus_input_configured
*/
return -1;
}
/* ASUS-specific keyboard hotkeys */
if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
set_bit(EV_REP, hi->input->evbit);
switch (usage->hid & HID_USAGE) {
case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
case 0x82: asus_map_key_clear(KEY_CAMERA); break;
case 0x88: asus_map_key_clear(KEY_RFKILL); break;
case 0xb5: asus_map_key_clear(KEY_CALC); break;
case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
/* ASUS touchpad toggle */
case 0x6b: asus_map_key_clear(KEY_F21); break;
/* ROG key */
case 0x38: asus_map_key_clear(KEY_PROG1); break;
/* Fn+C ASUS Splendid */
case 0xba: asus_map_key_clear(KEY_PROG2); break;
/* Fn+Space Power4Gear Hybrid */
case 0x5c: asus_map_key_clear(KEY_PROG3); break;
default:
/* ASUS lazily declares 256 usages, ignore the rest,
* as some make the keyboard appear as a pointer device. */
return -1;
}
/*
* Check and enable backlight only on devices with UsagePage ==
* 0xff31 to avoid initializing the keyboard firmware multiple
* times on devices with multiple HID descriptors but same
* PID/VID.
*/
if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
drvdata->enable_backlight = true;
return 1;
}
if ((usage->hid & HID_USAGE_PAGE) == HID_UP_MSVENDOR) {
set_bit(EV_REP, hi->input->evbit);
switch (usage->hid & HID_USAGE) {
case 0xff01: asus_map_key_clear(BTN_1); break;
case 0xff02: asus_map_key_clear(BTN_2); break;
case 0xff03: asus_map_key_clear(BTN_3); break;
case 0xff04: asus_map_key_clear(BTN_4); break;
case 0xff05: asus_map_key_clear(BTN_5); break;
case 0xff06: asus_map_key_clear(BTN_6); break;
case 0xff07: asus_map_key_clear(BTN_7); break;
case 0xff08: asus_map_key_clear(BTN_8); break;
case 0xff09: asus_map_key_clear(BTN_9); break;
case 0xff0a: asus_map_key_clear(BTN_A); break;
case 0xff0b: asus_map_key_clear(BTN_B); break;
case 0x00f1: asus_map_key_clear(KEY_WLAN); break;
case 0x00f2: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
case 0x00f3: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
case 0x00f4: asus_map_key_clear(KEY_DISPLAY_OFF); break;
case 0x00f7: asus_map_key_clear(KEY_CAMERA); break;
case 0x00f8: asus_map_key_clear(KEY_PROG1); break;
default:
return 0;
}
return 1;
}
if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
switch (usage->hid & HID_USAGE) {
case 0xe2: /* Mute */
case 0xe9: /* Volume up */
case 0xea: /* Volume down */
return 0;
default:
/* Ignore dummy Consumer usages which make the
* keyboard incorrectly appear as a pointer device.
*/
return -1;
}
}
return 0;
}
static int asus_start_multitouch(struct hid_device *hdev)
{
int ret;
const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
if (!dmabuf) {
ret = -ENOMEM;
hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
return ret;
}
ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
kfree(dmabuf);
if (ret != sizeof(buf)) {
hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
return ret;
}
return 0;
}
static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
return asus_start_multitouch(hdev);
return 0;
}
static int asus_probe(struct hid_device *hdev, const struct hid_device_id *id)
{
int ret;
struct asus_drvdata *drvdata;
drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
if (drvdata == NULL) {
hid_err(hdev, "Can't alloc Asus descriptor\n");
return -ENOMEM;
}
hid_set_drvdata(hdev, drvdata);
drvdata->quirks = id->driver_data;
if (drvdata->quirks & QUIRK_NO_INIT_REPORTS)
hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "Asus hid parse failed: %d\n", ret);
return ret;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hdev, "Asus hw start failed: %d\n", ret);
return ret;
}
if (!drvdata->input) {
hid_err(hdev, "Asus input not registered\n");
ret = -ENOMEM;
goto err_stop_hw;
}
if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
drvdata->input->name = "Asus TouchPad";
} else {
drvdata->input->name = "Asus Keyboard";
}
if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
ret = asus_start_multitouch(hdev);
if (ret)
goto err_stop_hw;
}
return 0;
err_stop_hw:
hid_hw_stop(hdev);
return ret;
}
static void asus_remove(struct hid_device *hdev)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->kbd_backlight) {
drvdata->kbd_backlight->removed = true;
cancel_work_sync(&drvdata->kbd_backlight->work);
}
hid_hw_stop(hdev);
}
static __u8 *asus_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
if (drvdata->quirks & QUIRK_FIX_NOTEBOOK_REPORT &&
*rsize >= 56 && rdesc[54] == 0x25 && rdesc[55] == 0x65) {
hid_info(hdev, "Fixing up Asus notebook report descriptor\n");
rdesc[55] = 0xdd;
}
if (drvdata->quirks & QUIRK_T100_KEYBOARD &&
*rsize == 76 && rdesc[73] == 0x81 && rdesc[74] == 0x01) {
hid_info(hdev, "Fixing up Asus T100 keyb report descriptor\n");
rdesc[74] &= ~HID_MAIN_ITEM_CONSTANT;
}
return rdesc;
}
static const struct hid_device_id asus_devices[] = {
{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_I2C_KEYBOARD), I2C_KEYBOARD_QUIRKS},
{ HID_I2C_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_I2C_TOUCHPAD), I2C_TOUCHPAD_QUIRKS },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_ROG_KEYBOARD2), QUIRK_USE_KBD_BACKLIGHT },
{ HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK,
USB_DEVICE_ID_ASUSTEK_T100_KEYBOARD),
QUIRK_T100_KEYBOARD | QUIRK_NO_CONSUMER_USAGES },
{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_ASUS_AK1D) },
{ HID_USB_DEVICE(USB_VENDOR_ID_JESS, USB_DEVICE_ID_ASUS_MD_5112) },
{ }
};
MODULE_DEVICE_TABLE(hid, asus_devices);
static struct hid_driver asus_driver = {
.name = "asus",
.id_table = asus_devices,
.report_fixup = asus_report_fixup,
.probe = asus_probe,
.remove = asus_remove,
.input_mapping = asus_input_mapping,
.input_configured = asus_input_configured,
#ifdef CONFIG_PM
.reset_resume = asus_reset_resume,
#endif
.raw_event = asus_raw_event
};
module_hid_driver(asus_driver);
MODULE_LICENSE("GPL");
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