mirror of https://gitee.com/openkylin/linux.git
595 lines
16 KiB
C
595 lines
16 KiB
C
/*
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* HID driver for Asus notebook built-in keyboard.
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* Fixes small logical maximum to match usage maximum.
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*
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* Currently supported devices are:
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* EeeBook X205TA
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* VivoBook E200HA
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*
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* Copyright (c) 2016 Yusuke Fujimaki <usk.fujimaki@gmail.com>
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*
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* This module based on hid-ortek by
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* Copyright (c) 2010 Johnathon Harris <jmharris@gmail.com>
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* Copyright (c) 2011 Jiri Kosina
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*
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* This module has been updated to add support for Asus i2c touchpad.
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*
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* Copyright (c) 2016 Brendan McGrath <redmcg@redmandi.dyndns.org>
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* Copyright (c) 2016 Victor Vlasenko <victor.vlasenko@sysgears.com>
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* Copyright (c) 2016 Frederik Wenigwieser <frederik.wenigwieser@gmail.com>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*/
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/input/mt.h>
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#include "hid-ids.h"
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MODULE_AUTHOR("Yusuke Fujimaki <usk.fujimaki@gmail.com>");
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MODULE_AUTHOR("Brendan McGrath <redmcg@redmandi.dyndns.org>");
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MODULE_AUTHOR("Victor Vlasenko <victor.vlasenko@sysgears.com>");
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MODULE_AUTHOR("Frederik Wenigwieser <frederik.wenigwieser@gmail.com>");
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MODULE_DESCRIPTION("Asus HID Keyboard and TouchPad");
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#define FEATURE_REPORT_ID 0x0d
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#define INPUT_REPORT_ID 0x5d
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#define FEATURE_KBD_REPORT_ID 0x5a
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#define INPUT_REPORT_SIZE 28
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#define FEATURE_KBD_REPORT_SIZE 16
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#define SUPPORT_KBD_BACKLIGHT BIT(0)
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#define MAX_CONTACTS 5
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#define MAX_X 2794
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#define MAX_Y 1758
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#define MAX_TOUCH_MAJOR 8
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#define MAX_PRESSURE 128
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#define CONTACT_DATA_SIZE 5
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#define BTN_LEFT_MASK 0x01
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#define CONTACT_TOOL_TYPE_MASK 0x80
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#define CONTACT_X_MSB_MASK 0xf0
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#define CONTACT_Y_MSB_MASK 0x0f
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#define CONTACT_TOUCH_MAJOR_MASK 0x07
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#define CONTACT_PRESSURE_MASK 0x7f
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#define QUIRK_FIX_NOTEBOOK_REPORT BIT(0)
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#define QUIRK_NO_INIT_REPORTS BIT(1)
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#define QUIRK_SKIP_INPUT_MAPPING BIT(2)
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#define QUIRK_IS_MULTITOUCH BIT(3)
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#define QUIRK_NO_CONSUMER_USAGES BIT(4)
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#define QUIRK_USE_KBD_BACKLIGHT BIT(5)
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#define QUIRK_T100_KEYBOARD BIT(6)
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#define I2C_KEYBOARD_QUIRKS (QUIRK_FIX_NOTEBOOK_REPORT | \
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QUIRK_NO_INIT_REPORTS | \
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QUIRK_NO_CONSUMER_USAGES)
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#define I2C_TOUCHPAD_QUIRKS (QUIRK_NO_INIT_REPORTS | \
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QUIRK_SKIP_INPUT_MAPPING | \
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QUIRK_IS_MULTITOUCH)
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#define TRKID_SGN ((TRKID_MAX + 1) >> 1)
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struct asus_kbd_leds {
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struct led_classdev cdev;
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struct hid_device *hdev;
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struct work_struct work;
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unsigned int brightness;
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bool removed;
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};
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struct asus_drvdata {
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unsigned long quirks;
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struct input_dev *input;
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struct asus_kbd_leds *kbd_backlight;
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bool enable_backlight;
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};
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static void asus_report_contact_down(struct input_dev *input,
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int toolType, u8 *data)
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{
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int touch_major, pressure;
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int x = (data[0] & CONTACT_X_MSB_MASK) << 4 | data[1];
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int y = MAX_Y - ((data[0] & CONTACT_Y_MSB_MASK) << 8 | data[2]);
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if (toolType == MT_TOOL_PALM) {
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touch_major = MAX_TOUCH_MAJOR;
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pressure = MAX_PRESSURE;
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} else {
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touch_major = (data[3] >> 4) & CONTACT_TOUCH_MAJOR_MASK;
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pressure = data[4] & CONTACT_PRESSURE_MASK;
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}
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input_report_abs(input, ABS_MT_POSITION_X, x);
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input_report_abs(input, ABS_MT_POSITION_Y, y);
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input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major);
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input_report_abs(input, ABS_MT_PRESSURE, pressure);
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}
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/* Required for Synaptics Palm Detection */
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static void asus_report_tool_width(struct input_dev *input)
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{
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struct input_mt *mt = input->mt;
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struct input_mt_slot *oldest;
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int oldid, count, i;
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oldest = NULL;
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oldid = mt->trkid;
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count = 0;
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for (i = 0; i < mt->num_slots; ++i) {
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struct input_mt_slot *ps = &mt->slots[i];
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int id = input_mt_get_value(ps, ABS_MT_TRACKING_ID);
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if (id < 0)
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continue;
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if ((id - oldid) & TRKID_SGN) {
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oldest = ps;
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oldid = id;
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}
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count++;
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}
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if (oldest) {
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input_report_abs(input, ABS_TOOL_WIDTH,
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input_mt_get_value(oldest, ABS_MT_TOUCH_MAJOR));
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}
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}
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static void asus_report_input(struct input_dev *input, u8 *data)
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{
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int i;
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u8 *contactData = data + 2;
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for (i = 0; i < MAX_CONTACTS; i++) {
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bool down = !!(data[1] & BIT(i+3));
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int toolType = contactData[3] & CONTACT_TOOL_TYPE_MASK ?
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MT_TOOL_PALM : MT_TOOL_FINGER;
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input_mt_slot(input, i);
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input_mt_report_slot_state(input, toolType, down);
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if (down) {
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asus_report_contact_down(input, toolType, contactData);
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contactData += CONTACT_DATA_SIZE;
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}
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}
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input_report_key(input, BTN_LEFT, data[1] & BTN_LEFT_MASK);
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asus_report_tool_width(input);
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input_mt_sync_frame(input);
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input_sync(input);
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}
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static int asus_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data, int size)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH &&
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data[0] == INPUT_REPORT_ID &&
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size == INPUT_REPORT_SIZE) {
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asus_report_input(drvdata->input, data);
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return 1;
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}
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return 0;
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}
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static int asus_kbd_set_report(struct hid_device *hdev, u8 *buf, size_t buf_size)
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{
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unsigned char *dmabuf;
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int ret;
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dmabuf = kmemdup(buf, buf_size, GFP_KERNEL);
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if (!dmabuf)
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return -ENOMEM;
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ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, dmabuf,
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buf_size, HID_FEATURE_REPORT,
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HID_REQ_SET_REPORT);
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kfree(dmabuf);
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return ret;
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}
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static int asus_kbd_init(struct hid_device *hdev)
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{
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u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x41, 0x53, 0x55, 0x53, 0x20, 0x54,
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0x65, 0x63, 0x68, 0x2e, 0x49, 0x6e, 0x63, 0x2e, 0x00 };
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int ret;
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ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
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if (ret < 0)
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hid_err(hdev, "Asus failed to send init command: %d\n", ret);
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return ret;
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}
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static int asus_kbd_get_functions(struct hid_device *hdev,
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unsigned char *kbd_func)
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{
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u8 buf[] = { FEATURE_KBD_REPORT_ID, 0x05, 0x20, 0x31, 0x00, 0x08 };
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u8 *readbuf;
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int ret;
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ret = asus_kbd_set_report(hdev, buf, sizeof(buf));
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if (ret < 0) {
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hid_err(hdev, "Asus failed to send configuration command: %d\n", ret);
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return ret;
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}
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readbuf = kzalloc(FEATURE_KBD_REPORT_SIZE, GFP_KERNEL);
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if (!readbuf)
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return -ENOMEM;
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ret = hid_hw_raw_request(hdev, FEATURE_KBD_REPORT_ID, readbuf,
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FEATURE_KBD_REPORT_SIZE, HID_FEATURE_REPORT,
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HID_REQ_GET_REPORT);
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if (ret < 0) {
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hid_err(hdev, "Asus failed to request functions: %d\n", ret);
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kfree(readbuf);
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return ret;
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}
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*kbd_func = readbuf[6];
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kfree(readbuf);
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return ret;
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}
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static void asus_kbd_backlight_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
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cdev);
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if (led->brightness == brightness)
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return;
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led->brightness = brightness;
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schedule_work(&led->work);
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}
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static enum led_brightness asus_kbd_backlight_get(struct led_classdev *led_cdev)
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{
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struct asus_kbd_leds *led = container_of(led_cdev, struct asus_kbd_leds,
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cdev);
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return led->brightness;
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}
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static void asus_kbd_backlight_work(struct work_struct *work)
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{
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struct asus_kbd_leds *led = container_of(work, struct asus_kbd_leds, work);
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u8 buf[] = { FEATURE_KBD_REPORT_ID, 0xba, 0xc5, 0xc4, 0x00 };
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int ret;
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if (led->removed)
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return;
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buf[4] = led->brightness;
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ret = asus_kbd_set_report(led->hdev, buf, sizeof(buf));
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if (ret < 0)
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hid_err(led->hdev, "Asus failed to set keyboard backlight: %d\n", ret);
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}
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static int asus_kbd_register_leds(struct hid_device *hdev)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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unsigned char kbd_func;
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int ret;
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/* Initialize keyboard */
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ret = asus_kbd_init(hdev);
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if (ret < 0)
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return ret;
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/* Get keyboard functions */
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ret = asus_kbd_get_functions(hdev, &kbd_func);
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if (ret < 0)
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return ret;
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/* Check for backlight support */
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if (!(kbd_func & SUPPORT_KBD_BACKLIGHT))
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return -ENODEV;
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drvdata->kbd_backlight = devm_kzalloc(&hdev->dev,
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sizeof(struct asus_kbd_leds),
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GFP_KERNEL);
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if (!drvdata->kbd_backlight)
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return -ENOMEM;
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drvdata->kbd_backlight->removed = false;
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drvdata->kbd_backlight->brightness = 0;
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drvdata->kbd_backlight->hdev = hdev;
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drvdata->kbd_backlight->cdev.name = "asus::kbd_backlight";
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drvdata->kbd_backlight->cdev.max_brightness = 3;
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drvdata->kbd_backlight->cdev.brightness_set = asus_kbd_backlight_set;
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drvdata->kbd_backlight->cdev.brightness_get = asus_kbd_backlight_get;
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INIT_WORK(&drvdata->kbd_backlight->work, asus_kbd_backlight_work);
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ret = devm_led_classdev_register(&hdev->dev, &drvdata->kbd_backlight->cdev);
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if (ret < 0) {
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/* No need to have this still around */
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devm_kfree(&hdev->dev, drvdata->kbd_backlight);
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}
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return ret;
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}
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static int asus_input_configured(struct hid_device *hdev, struct hid_input *hi)
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{
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struct input_dev *input = hi->input;
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH) {
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int ret;
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input_set_abs_params(input, ABS_MT_POSITION_X, 0, MAX_X, 0, 0);
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input_set_abs_params(input, ABS_MT_POSITION_Y, 0, MAX_Y, 0, 0);
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input_set_abs_params(input, ABS_TOOL_WIDTH, 0, MAX_TOUCH_MAJOR, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, MAX_TOUCH_MAJOR, 0, 0);
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, MAX_PRESSURE, 0, 0);
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__set_bit(BTN_LEFT, input->keybit);
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__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
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ret = input_mt_init_slots(input, MAX_CONTACTS, INPUT_MT_POINTER);
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if (ret) {
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hid_err(hdev, "Asus input mt init slots failed: %d\n", ret);
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return ret;
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}
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}
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drvdata->input = input;
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if (drvdata->enable_backlight && asus_kbd_register_leds(hdev))
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hid_warn(hdev, "Failed to initialize backlight.\n");
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return 0;
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}
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#define asus_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, \
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max, EV_KEY, (c))
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static int asus_input_mapping(struct hid_device *hdev,
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struct hid_input *hi, struct hid_field *field,
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struct hid_usage *usage, unsigned long **bit,
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int *max)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_SKIP_INPUT_MAPPING) {
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/* Don't map anything from the HID report.
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* We do it all manually in asus_input_configured
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*/
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return -1;
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}
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/* ASUS-specific keyboard hotkeys */
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if ((usage->hid & HID_USAGE_PAGE) == 0xff310000) {
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set_bit(EV_REP, hi->input->evbit);
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switch (usage->hid & HID_USAGE) {
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case 0x10: asus_map_key_clear(KEY_BRIGHTNESSDOWN); break;
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case 0x20: asus_map_key_clear(KEY_BRIGHTNESSUP); break;
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case 0x35: asus_map_key_clear(KEY_DISPLAY_OFF); break;
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case 0x6c: asus_map_key_clear(KEY_SLEEP); break;
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case 0x82: asus_map_key_clear(KEY_CAMERA); break;
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case 0x88: asus_map_key_clear(KEY_RFKILL); break;
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case 0xb5: asus_map_key_clear(KEY_CALC); break;
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case 0xc4: asus_map_key_clear(KEY_KBDILLUMUP); break;
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case 0xc5: asus_map_key_clear(KEY_KBDILLUMDOWN); break;
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/* ASUS touchpad toggle */
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case 0x6b: asus_map_key_clear(KEY_F21); break;
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/* ROG key */
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case 0x38: asus_map_key_clear(KEY_PROG1); break;
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/* Fn+C ASUS Splendid */
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case 0xba: asus_map_key_clear(KEY_PROG2); break;
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/* Fn+Space Power4Gear Hybrid */
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case 0x5c: asus_map_key_clear(KEY_PROG3); break;
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default:
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/* ASUS lazily declares 256 usages, ignore the rest,
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* as some make the keyboard appear as a pointer device. */
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return -1;
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}
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/*
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* Check and enable backlight only on devices with UsagePage ==
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* 0xff31 to avoid initializing the keyboard firmware multiple
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* times on devices with multiple HID descriptors but same
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* PID/VID.
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*/
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if (drvdata->quirks & QUIRK_USE_KBD_BACKLIGHT)
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drvdata->enable_backlight = true;
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return 1;
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}
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if (drvdata->quirks & QUIRK_NO_CONSUMER_USAGES &&
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(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) {
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switch (usage->hid & HID_USAGE) {
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case 0xe2: /* Mute */
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case 0xe9: /* Volume up */
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case 0xea: /* Volume down */
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return 0;
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default:
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/* Ignore dummy Consumer usages which make the
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* keyboard incorrectly appear as a pointer device.
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*/
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return -1;
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}
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}
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return 0;
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}
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static int asus_start_multitouch(struct hid_device *hdev)
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{
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int ret;
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const unsigned char buf[] = { FEATURE_REPORT_ID, 0x00, 0x03, 0x01, 0x00 };
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unsigned char *dmabuf = kmemdup(buf, sizeof(buf), GFP_KERNEL);
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if (!dmabuf) {
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ret = -ENOMEM;
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hid_err(hdev, "Asus failed to alloc dma buf: %d\n", ret);
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return ret;
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}
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ret = hid_hw_raw_request(hdev, dmabuf[0], dmabuf, sizeof(buf),
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HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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kfree(dmabuf);
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if (ret != sizeof(buf)) {
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hid_err(hdev, "Asus failed to start multitouch: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static int __maybe_unused asus_reset_resume(struct hid_device *hdev)
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{
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struct asus_drvdata *drvdata = hid_get_drvdata(hdev);
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if (drvdata->quirks & QUIRK_IS_MULTITOUCH)
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|
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 },
|
|
{ }
|
|
};
|
|
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");
|