diff options
Diffstat (limited to 'drivers/platform/x86/peaq-wmi.c')
| -rw-r--r-- | drivers/platform/x86/peaq-wmi.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/drivers/platform/x86/peaq-wmi.c b/drivers/platform/x86/peaq-wmi.c deleted file mode 100644 index 9b9e1f39bbfb..000000000000 --- a/drivers/platform/x86/peaq-wmi.c +++ /dev/null @@ -1,113 +0,0 @@ -/* - * PEAQ 2-in-1 WMI hotkey driver - * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/acpi.h> -#include <linux/dmi.h> -#include <linux/input-polldev.h> -#include <linux/kernel.h> -#include <linux/module.h> - -#define PEAQ_DOLBY_BUTTON_GUID "ABBC0F6F-8EA1-11D1-00A0-C90629100000" -#define PEAQ_DOLBY_BUTTON_METHOD_ID 5 -#define PEAQ_POLL_INTERVAL_MS 250 -#define PEAQ_POLL_IGNORE_MS 500 -#define PEAQ_POLL_MAX_MS 1000 - -MODULE_ALIAS("wmi:"PEAQ_DOLBY_BUTTON_GUID); - -static unsigned int peaq_ignore_events_counter; -static struct input_polled_dev *peaq_poll_dev; - -/* - * The Dolby button (yes really a Dolby button) causes an ACPI variable to get - * set on both press and release. The WMI method checks and clears that flag. - * So for a press + release we will get back One from the WMI method either once - * (if polling after the release) or twice (polling between press and release). - * We ignore events for 0.5s after the first event to avoid reporting 2 presses. - */ -static void peaq_wmi_poll(struct input_polled_dev *dev) -{ - union acpi_object obj; - acpi_status status; - u32 dummy = 0; - - struct acpi_buffer input = { sizeof(dummy), &dummy }; - struct acpi_buffer output = { sizeof(obj), &obj }; - - status = wmi_evaluate_method(PEAQ_DOLBY_BUTTON_GUID, 0, - PEAQ_DOLBY_BUTTON_METHOD_ID, - &input, &output); - if (ACPI_FAILURE(status)) - return; - - if (obj.type != ACPI_TYPE_INTEGER) { - dev_err(&peaq_poll_dev->input->dev, - "Error WMBC did not return an integer\n"); - return; - } - - if (peaq_ignore_events_counter && peaq_ignore_events_counter--) - return; - - if (obj.integer.value) { - input_event(peaq_poll_dev->input, EV_KEY, KEY_SOUND, 1); - input_sync(peaq_poll_dev->input); - input_event(peaq_poll_dev->input, EV_KEY, KEY_SOUND, 0); - input_sync(peaq_poll_dev->input); - peaq_ignore_events_counter = max(1u, - PEAQ_POLL_IGNORE_MS / peaq_poll_dev->poll_interval); - } -} - -/* Some other devices (Shuttle XS35) use the same WMI GUID for other purposes */ -static const struct dmi_system_id peaq_dmi_table[] __initconst = { - { - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"), - DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"), - }, - }, - {} -}; - -static int __init peaq_wmi_init(void) -{ - /* WMI GUID is not unique, also check for a DMI match */ - if (!dmi_check_system(peaq_dmi_table)) - return -ENODEV; - - if (!wmi_has_guid(PEAQ_DOLBY_BUTTON_GUID)) - return -ENODEV; - - peaq_poll_dev = input_allocate_polled_device(); - if (!peaq_poll_dev) - return -ENOMEM; - - peaq_poll_dev->poll = peaq_wmi_poll; - peaq_poll_dev->poll_interval = PEAQ_POLL_INTERVAL_MS; - peaq_poll_dev->poll_interval_max = PEAQ_POLL_MAX_MS; - peaq_poll_dev->input->name = "PEAQ WMI hotkeys"; - peaq_poll_dev->input->phys = "wmi/input0"; - peaq_poll_dev->input->id.bustype = BUS_HOST; - input_set_capability(peaq_poll_dev->input, EV_KEY, KEY_SOUND); - - return input_register_polled_device(peaq_poll_dev); -} - -static void __exit peaq_wmi_exit(void) -{ - input_unregister_polled_device(peaq_poll_dev); -} - -module_init(peaq_wmi_init); -module_exit(peaq_wmi_exit); - -MODULE_DESCRIPTION("PEAQ 2-in-1 WMI hotkey driver"); -MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); -MODULE_LICENSE("GPL"); |