From: Jamie Lentin jm@lentin.co.uk
stable inclusion from stable-v6.6.3 commit 465b557215664536cd20001872dade2cc4ae2d6a category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LBQP
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 2f2bd7cbd1d1548137b351040dc4e037d18cdfdc upstream.
The USB Compact Keyboard variant requires a reset_resume function to restore keyboard configuration after a suspend in some situations. Move configuration normally done on probe to lenovo_features_set_cptkbd(), then recycle this for use on reset_resume.
Without, the keyboard and driver would end up in an inconsistent state, breaking middle-button scrolling amongst other problems, and twiddling sysfs values wouldn't help as the middle-button mode won't be set until the driver is reloaded.
Tested on a USB and Bluetooth Thinkpad Compact Keyboard.
CC: stable@vger.kernel.org Fixes: 94eefa271323 ("HID: lenovo: Use native middle-button mode for compact keyboards") Signed-off-by: Jamie Lentin jm@lentin.co.uk Signed-off-by: Martin Kepplinger martink@posteo.de Link: https://lore.kernel.org/r/20231002150914.22101-1-martink@posteo.de Signed-off-by: Benjamin Tissoires bentiss@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/hid/hid-lenovo.c | 50 +++++++++++++++++++++++++++------------- 1 file changed, 34 insertions(+), 16 deletions(-)
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c index 9c1181313e44..7c1b33be9d13 100644 --- a/drivers/hid/hid-lenovo.c +++ b/drivers/hid/hid-lenovo.c @@ -526,6 +526,19 @@ static void lenovo_features_set_cptkbd(struct hid_device *hdev) int ret; struct lenovo_drvdata *cptkbd_data = hid_get_drvdata(hdev);
+ /* + * 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); + ret = lenovo_send_cmd_cptkbd(hdev, 0x05, cptkbd_data->fn_lock); if (ret) hid_err(hdev, "Fn-lock setting failed: %d\n", ret); @@ -1148,22 +1161,6 @@ static int lenovo_probe_cptkbd(struct hid_device *hdev) } hid_set_drvdata(hdev, cptkbd_data);
- /* - * Tell the keyboard a driver understands it, and turn F7, F9, F11 into - * regular keys (Compact only) - */ - if (hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD || - hdev->product == USB_DEVICE_ID_LENOVO_CBTKBD) { - 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; @@ -1286,6 +1283,24 @@ static int lenovo_probe(struct hid_device *hdev, return ret; }
+#ifdef CONFIG_PM +static int lenovo_reset_resume(struct hid_device *hdev) +{ + switch (hdev->product) { + case USB_DEVICE_ID_LENOVO_CUSBKBD: + case USB_DEVICE_ID_LENOVO_TPIIUSBKBD: + if (hdev->type == HID_TYPE_USBMOUSE) + lenovo_features_set_cptkbd(hdev); + + break; + default: + break; + } + + return 0; +} +#endif + static void lenovo_remove_tpkbd(struct hid_device *hdev) { struct lenovo_drvdata *data_pointer = hid_get_drvdata(hdev); @@ -1402,6 +1417,9 @@ static struct hid_driver lenovo_driver = { .raw_event = lenovo_raw_event, .event = lenovo_event, .report_fixup = lenovo_report_fixup, +#ifdef CONFIG_PM + .reset_resume = lenovo_reset_resume, +#endif }; module_hid_driver(lenovo_driver);