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HID: lenovo: Support for ThinkPad-X12-TAB-1/2 Kbd Fn keys

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Fn Keys like Mic mute, Power Modes/Airplane mode,Selective
screenshot/Pickup Phone, KBD Backlight and
star/Favourites is emitted as HID raw events in X12 Tab1 and Tab2.
This support has been added.

Thinkpad X12 TAB 2 and TAB 1 Folio keyboard's raw events will get
detected as Fn keys with this patch.

Default fn_lock state for these Keyboards are OFF.

Other than these changes, we follow TP10UKBD's processes.

Tested on X12 Tab 2.

Signed-off-by: Vishnu Sankar <vishnuocv@gmail.com>
Signed-off-by: Vishnu Sankar <vsankar@lenovo.com>
Suggested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
This commit is contained in:
Vishnu Sankar 2024-12-18 23:33:09 +09:00 • committed by Jiri Kosina
parent 2a770b49b1
commit 84c9d2a968
1 changed files with 98 additions and 1 deletions
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99
drivers/hid/hid-lenovo.c
View file

@ -31,12 +31,20 @@
#include <linux/input.h>
#include <linux/leds.h>
#include <linux/workqueue.h>
#include <linux/platform_profile.h>
#include "hid-ids.h"
/* Userspace expects F20 for mic-mute KEY_MICMUTE does not work */
#define LENOVO_KEY_MICMUTE KEY_F20
/* HID raw events for ThinkPad X12 Tabs*/
#define TP_X12_RAW_HOTKEY_FN_F4 0x00020003
#define TP_X12_RAW_HOTKEY_FN_F8 0x38001003
#define TP_X12_RAW_HOTKEY_FN_F10 0x00000803
#define TP_X12_RAW_HOTKEY_FN_F12 0x00000403
#define TP_X12_RAW_HOTKEY_FN_SPACE 0x18001003
struct lenovo_drvdata {
u8 led_report[3]; /* Must be first for proper alignment */
int led_state;
@ -71,6 +79,14 @@ struct lenovo_drvdata {
#define TP10UBKBD_LED_OFF 1
#define TP10UBKBD_LED_ON 2
/* Function to report raw_events as key events*/
static inline void report_key_event(struct input_dev *input, int keycode)
{
input_report_key(input, keycode, 1);
input_report_key(input, keycode, 0);
input_sync(input);
}
static int lenovo_led_set_tp10ubkbd(struct hid_device *hdev, u8 led_code,
enum led_brightness value)
{
@ -472,6 +488,8 @@ static int lenovo_input_mapping(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
return lenovo_input_mapping_tp10_ultrabook_kbd(hdev, hi, field,
usage, bit, max);
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
return lenovo_input_mapping_x1_tab_kbd(hdev, hi, field, usage, bit, max);
@ -582,6 +600,8 @@ static ssize_t attr_fn_lock_store(struct device *dev,
case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
lenovo_features_set_cptkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
@ -680,6 +700,55 @@ static const struct attribute_group lenovo_attr_group_cptkbd = {
.attrs = lenovo_attributes_cptkbd,
};
/* Function to handle Lenovo Thinkpad TAB X12's HID raw inputs for fn keys*/
static int lenovo_raw_event_TP_X12_tab(struct hid_device *hdev, u32 raw_data)
{
struct hid_input *hidinput;
struct input_dev *input = NULL;
/* Iterate through all associated input devices */
list_for_each_entry(hidinput, &hdev->inputs, list) {
input = hidinput->input;
if (!input)
continue;
switch (raw_data) {
/* fn-F20 being used here for MIC mute*/
case TP_X12_RAW_HOTKEY_FN_F4:
report_key_event(input, LENOVO_KEY_MICMUTE);
return 1;
/* Power-mode or Airplane mode will be called based on the device*/
case TP_X12_RAW_HOTKEY_FN_F8:
/*
* TP X12 TAB uses Fn-F8 calls Airplanemode
* Whereas TP X12 TAB2 uses Fn-F8 for toggling
* Power modes
*/
(hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB) ?
report_key_event(input, KEY_RFKILL) :
platform_profile_cycle();
return 1;
case TP_X12_RAW_HOTKEY_FN_F10:
/* TAB1 has PICKUP Phone and TAB2 use Snipping tool*/
(hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB) ?
report_key_event(input, KEY_PICKUP_PHONE) :
report_key_event(input, KEY_SELECTIVE_SCREENSHOT);
return 1;
case TP_X12_RAW_HOTKEY_FN_F12:
/* BookMarks/STAR key*/
report_key_event(input, KEY_BOOKMARKS);
return 1;
case TP_X12_RAW_HOTKEY_FN_SPACE:
/* Keyboard LED backlight toggle*/
report_key_event(input, KEY_KBDILLUMTOGGLE);
return 1;
default:
break;
}
}
return 0;
}
static int lenovo_raw_event(struct hid_device *hdev,
struct hid_report *report, u8 *data, int size)
{
@ -697,6 +766,15 @@ static int lenovo_raw_event(struct hid_device *hdev,
data[2] = 0x01;
}
/*
* Lenovo TP X12 Tab KBD's Fn+XX is HID raw data defined. Report ID is 0x03
* e.g.: Raw data received for MIC mute is 0x00020003.
*/
if (unlikely((hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB
|| hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB2)
&& size >= 3 && report->id == 0x03))
return lenovo_raw_event_TP_X12_tab(hdev, le32_to_cpu(*(u32 *)data));
return 0;
}
@ -776,6 +854,8 @@ static int lenovo_event(struct hid_device *hdev, struct hid_field *field,
case USB_DEVICE_ID_LENOVO_TPIIUSBKBD:
case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
return lenovo_event_cptkbd(hdev, field, usage, value);
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
@ -1057,6 +1137,8 @@ static int lenovo_led_brightness_set(struct led_classdev *led_cdev,
case USB_DEVICE_ID_LENOVO_TPKBD:
lenovo_led_set_tpkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
@ -1243,8 +1325,15 @@ static int lenovo_probe_tp10ubkbd(struct hid_device *hdev)
* We cannot read the state, only set it, so we force it to on here
* (which should be a no-op) to make sure that our state matches the
* keyboard's FN-lock state. This is the same as what Windows does.
*
* For X12 TAB and TAB2, the default windows behaviour Fn-lock Off.
* Adding additional check to ensure the behaviour in case of
* Thinkpad X12 Tabs.
*/
data->fn_lock = true;
data->fn_lock = !(hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB ||
hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB2);
lenovo_led_set_tp10ubkbd(hdev, TP10UBKBD_FN_LOCK_LED, data->fn_lock);
ret = sysfs_create_group(&hdev->dev.kobj, &lenovo_attr_group_tp10ubkbd);
@ -1288,6 +1377,8 @@ static int lenovo_probe(struct hid_device *hdev,
case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
ret = lenovo_probe_cptkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
@ -1375,6 +1466,8 @@ static void lenovo_remove(struct hid_device *hdev)
case USB_DEVICE_ID_LENOVO_TPIIBTKBD:
lenovo_remove_cptkbd(hdev);
break;
case USB_DEVICE_ID_LENOVO_X12_TAB:
case USB_DEVICE_ID_LENOVO_X12_TAB2:
case USB_DEVICE_ID_LENOVO_TP10UBKBD:
case USB_DEVICE_ID_LENOVO_X1_TAB:
case USB_DEVICE_ID_LENOVO_X1_TAB3:
@ -1429,6 +1522,10 @@ static const struct hid_device_id lenovo_devices[] = {
USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_TAB) },
{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X1_TAB3) },
{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB) },
{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC,
USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_X12_TAB2) },
{ }
};