+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * PEAQ 2-in-1 WMI hotkey driver
- * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
- */
-
-#include <linux/acpi.h>
-#include <linux/dmi.h>
-#include <linux/input.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 struct input_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_dev *input_dev)
-{
- static unsigned long last_event_time;
- static bool had_events;
- 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(&input_dev->dev,
- "Error WMBC did not return an integer\n");
- return;
- }
-
- if (!obj.integer.value)
- return;
-
- if (had_events && time_before(jiffies, last_event_time +
- msecs_to_jiffies(PEAQ_POLL_IGNORE_MS)))
- return;
-
- input_event(input_dev, EV_KEY, KEY_SOUND, 1);
- input_sync(input_dev);
- input_event(input_dev, EV_KEY, KEY_SOUND, 0);
- input_sync(input_dev);
-
- last_event_time = jiffies;
- had_events = true;
-}
-
-/* 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)
-{
- int err;
-
- /* 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_device();
- if (!peaq_poll_dev)
- return -ENOMEM;
-
- peaq_poll_dev->name = "PEAQ WMI hotkeys";
- peaq_poll_dev->phys = "wmi/input0";
- peaq_poll_dev->id.bustype = BUS_HOST;
- input_set_capability(peaq_poll_dev, EV_KEY, KEY_SOUND);
-
- err = input_setup_polling(peaq_poll_dev, peaq_wmi_poll);
- if (err)
- goto err_out;
-
- input_set_poll_interval(peaq_poll_dev, PEAQ_POLL_INTERVAL_MS);
- input_set_max_poll_interval(peaq_poll_dev, PEAQ_POLL_MAX_MS);
-
- err = input_register_device(peaq_poll_dev);
- if (err)
- goto err_out;
-
- return 0;
-
-err_out:
- input_free_device(peaq_poll_dev);
- return err;
-}
-
-static void __exit peaq_wmi_exit(void)
-{
- input_unregister_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");
.invalid_aei_gpiochip = "INT33FC:02",
};
+/*
+ * Peaq C1010
+ * This is a standard Windows tablet, but it has a special Dolby button.
+ * This button has a WMI interface, but that is broken. Instead of trying to
+ * use the broken WMI interface, instantiate a gpio_keys device for this.
+ */
+static struct x86_gpio_button peaq_c1010_button = {
+ .button = {
+ .code = KEY_SOUND,
+ .active_low = true,
+ .desc = "dolby_key",
+ .type = EV_KEY,
+ .wakeup = false,
+ .debounce_interval = 50,
+ },
+ .chip = "INT33FC:00",
+ .pin = 3,
+};
+
+const struct x86_dev_info peaq_c1010_info __initconst = {
+ .gpio_button = &peaq_c1010_button,
+ /*
+ * Move the ACPI event handler used by the broken WMI interface out of
+ * the way. This is the only event handler on INT33FC:00.
+ */
+ .invalid_aei_gpiochip = "INT33FC:00",
+};
+
/*
* Whitelabel (sold as various brands) TM800A550L tablets.
* These tablet's DSDT contains a whole bunch of bogus ACPI I2C devices
git.samba.org / sfrench / cifs-2.6.git / commitdiff