From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/platform/x86/wireless-hotkey.c | 122 +++++++++++++++++++++++++++++++++ 1 file changed, 122 insertions(+) create mode 100644 drivers/platform/x86/wireless-hotkey.c (limited to 'drivers/platform/x86/wireless-hotkey.c') diff --git a/drivers/platform/x86/wireless-hotkey.c b/drivers/platform/x86/wireless-hotkey.c new file mode 100644 index 0000000000..4422863f47 --- /dev/null +++ b/drivers/platform/x86/wireless-hotkey.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Airplane mode button for AMD, HP & Xiaomi laptops + * + * Copyright (C) 2014-2017 Alex Hung + * Copyright (C) 2021 Advanced Micro Devices + */ + +#include +#include +#include +#include +#include +#include +#include + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Alex Hung"); +MODULE_ALIAS("acpi*:HPQ6001:*"); +MODULE_ALIAS("acpi*:WSTADEF:*"); +MODULE_ALIAS("acpi*:AMDI0051:*"); + +struct wl_button { + struct input_dev *input_dev; + char phys[32]; +}; + +static const struct acpi_device_id wl_ids[] = { + {"HPQ6001", 0}, + {"WSTADEF", 0}, + {"AMDI0051", 0}, + {"", 0}, +}; + +static int wireless_input_setup(struct acpi_device *device) +{ + struct wl_button *button = acpi_driver_data(device); + int err; + + button->input_dev = input_allocate_device(); + if (!button->input_dev) + return -ENOMEM; + + snprintf(button->phys, sizeof(button->phys), "%s/input0", acpi_device_hid(device)); + + button->input_dev->name = "Wireless hotkeys"; + button->input_dev->phys = button->phys; + button->input_dev->id.bustype = BUS_HOST; + button->input_dev->evbit[0] = BIT(EV_KEY); + set_bit(KEY_RFKILL, button->input_dev->keybit); + + err = input_register_device(button->input_dev); + if (err) + goto err_free_dev; + + return 0; + +err_free_dev: + input_free_device(button->input_dev); + return err; +} + +static void wireless_input_destroy(struct acpi_device *device) +{ + struct wl_button *button = acpi_driver_data(device); + + input_unregister_device(button->input_dev); + kfree(button); +} + +static void wl_notify(struct acpi_device *acpi_dev, u32 event) +{ + struct wl_button *button = acpi_driver_data(acpi_dev); + + if (event != 0x80) { + pr_info("Received unknown event (0x%x)\n", event); + return; + } + + input_report_key(button->input_dev, KEY_RFKILL, 1); + input_sync(button->input_dev); + input_report_key(button->input_dev, KEY_RFKILL, 0); + input_sync(button->input_dev); +} + +static int wl_add(struct acpi_device *device) +{ + struct wl_button *button; + int err; + + button = kzalloc(sizeof(struct wl_button), GFP_KERNEL); + if (!button) + return -ENOMEM; + + device->driver_data = button; + + err = wireless_input_setup(device); + if (err) { + pr_err("Failed to setup wireless hotkeys\n"); + kfree(button); + } + + return err; +} + +static void wl_remove(struct acpi_device *device) +{ + wireless_input_destroy(device); +} + +static struct acpi_driver wl_driver = { + .name = "wireless-hotkey", + .owner = THIS_MODULE, + .ids = wl_ids, + .ops = { + .add = wl_add, + .remove = wl_remove, + .notify = wl_notify, + }, +}; + +module_acpi_driver(wl_driver); -- cgit v1.2.3