1 files changed, 0 insertions, 408 deletions

diff --git a/drivers/platform/x86/lenovo-yogabook-wmi.c b/drivers/platform/x86/lenovo-yogabook-wmi.c
deleted file mode 100644
index 5f4bd1eec38a..000000000000
--- a/drivers/platform/x86/lenovo-yogabook-wmi.c
+++ /dev/null
@@ -1,408 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* WMI driver for Lenovo Yoga Book YB1-X90* / -X91* tablets */
-
-#include <linux/acpi.h>
-#include <linux/devm-helpers.h>
-#include <linux/gpio/consumer.h>
-#include <linux/gpio/machine.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/leds.h>
-#include <linux/wmi.h>
-#include <linux/workqueue.h>
-
-#define YB_MBTN_EVENT_GUID	"243FEC1D-1963-41C1-8100-06A9D82A94B4"
-#define YB_MBTN_METHOD_GUID	"742B0CA1-0B20-404B-9CAA-AEFCABF30CE0"
-
-#define YB_PAD_ENABLE	1
-#define YB_PAD_DISABLE	2
-#define YB_LIGHTUP_BTN	3
-
-#define YB_KBD_BL_DEFAULT 128
-
-/* flags */
-enum {
-	YB_KBD_IS_ON,
-	YB_DIGITIZER_IS_ON,
-	YB_DIGITIZER_MODE,
-	YB_TABLET_MODE,
-	YB_SUSPENDED,
-};
-
-struct yogabook_wmi {
-	struct wmi_device *wdev;
-	struct acpi_device *kbd_adev;
-	struct acpi_device *dig_adev;
-	struct device *kbd_dev;
-	struct device *dig_dev;
-	struct gpio_desc *backside_hall_gpio;
-	int backside_hall_irq;
-	struct work_struct work;
-	struct led_classdev kbd_bl_led;
-	unsigned long flags;
-	uint8_t brightness;
-};
-
-static int yogabook_wmi_do_action(struct wmi_device *wdev, int action)
-{
-	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_buffer input;
-	acpi_status status;
-	u32 dummy_arg = 0;
-
-	dev_dbg(&wdev->dev, "Do action: %d\n", action);
-
-	input.pointer = &dummy_arg;
-	input.length = sizeof(dummy_arg);
-
-	status = wmi_evaluate_method(YB_MBTN_METHOD_GUID, 0, action, &input,
-				     &output);
-	if (ACPI_FAILURE(status)) {
-		dev_err(&wdev->dev, "Calling WMI method failure: 0x%x\n",
-			status);
-		return status;
-	}
-
-	kfree(output.pointer);
-
-	return 0;
-}
-
-/*
- * To control keyboard backlight, call the method KBLC() of the TCS1 ACPI
- * device (Goodix touchpad acts as virtual sensor keyboard).
- */
-static int yogabook_wmi_set_kbd_backlight(struct wmi_device *wdev,
-					  uint8_t level)
-{
-	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
-	struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
-	struct acpi_object_list input;
-	union acpi_object param;
-	acpi_status status;
-
-	if (data->kbd_adev->power.state != ACPI_STATE_D0) {
-		dev_warn(&wdev->dev, "keyboard touchscreen not in D0, cannot set brightness\n");
-		return -ENXIO;
-	}
-
-	dev_dbg(&wdev->dev, "Set KBLC level to %u\n", level);
-
-	input.count = 1;
-	input.pointer = &param;
-
-	param.type = ACPI_TYPE_INTEGER;
-	param.integer.value = 255 - level;
-
-	status = acpi_evaluate_object(acpi_device_handle(data->kbd_adev), "KBLC",
-				      &input, &output);
-	if (ACPI_FAILURE(status)) {
-		dev_err(&wdev->dev, "Failed to call KBLC method: 0x%x\n", status);
-		return status;
-	}
-
-	kfree(output.pointer);
-	return 0;
-}
-
-static void yogabook_wmi_work(struct work_struct *work)
-{
-	struct yogabook_wmi *data = container_of(work, struct yogabook_wmi, work);
-	struct device *dev = &data->wdev->dev;
-	bool kbd_on, digitizer_on;
-	int r;
-
-	if (test_bit(YB_SUSPENDED, &data->flags))
-		return;
-
-	if (test_bit(YB_TABLET_MODE, &data->flags)) {
-		kbd_on = false;
-		digitizer_on = false;
-	} else if (test_bit(YB_DIGITIZER_MODE, &data->flags)) {
-		digitizer_on = true;
-		kbd_on = false;
-	} else {
-		kbd_on = true;
-		digitizer_on = false;
-	}
-
-	if (!kbd_on && test_bit(YB_KBD_IS_ON, &data->flags)) {
-		/*
-		 * Must be done before releasing the keyboard touchscreen driver,
-		 * so that the keyboard touchscreen dev is still in D0.
-		 */
-		yogabook_wmi_set_kbd_backlight(data->wdev, 0);
-		device_release_driver(data->kbd_dev);
-		clear_bit(YB_KBD_IS_ON, &data->flags);
-	}
-
-	if (!digitizer_on && test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
-		yogabook_wmi_do_action(data->wdev, YB_PAD_DISABLE);
-		device_release_driver(data->dig_dev);
-		clear_bit(YB_DIGITIZER_IS_ON, &data->flags);
-	}
-
-	if (kbd_on && !test_bit(YB_KBD_IS_ON, &data->flags)) {
-		r = device_reprobe(data->kbd_dev);
-		if (r)
-			dev_warn(dev, "Reprobe of keyboard touchscreen failed: %d\n", r);
-
-		yogabook_wmi_set_kbd_backlight(data->wdev, data->brightness);
-		set_bit(YB_KBD_IS_ON, &data->flags);
-	}
-
-	if (digitizer_on && !test_bit(YB_DIGITIZER_IS_ON, &data->flags)) {
-		r = device_reprobe(data->dig_dev);
-		if (r)
-			dev_warn(dev, "Reprobe of digitizer failed: %d\n", r);
-
-		yogabook_wmi_do_action(data->wdev, YB_PAD_ENABLE);
-		set_bit(YB_DIGITIZER_IS_ON, &data->flags);
-	}
-}
-
-static void yogabook_wmi_notify(struct wmi_device *wdev, union acpi_object *dummy)
-{
-	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
-
-	if (test_bit(YB_SUSPENDED, &data->flags))
-		return;
-
-	if (test_bit(YB_DIGITIZER_MODE, &data->flags))
-		clear_bit(YB_DIGITIZER_MODE, &data->flags);
-	else
-		set_bit(YB_DIGITIZER_MODE, &data->flags);
-
-	/*
-	 * We are called from the ACPI core and the driver [un]binding which is
-	 * done also needs ACPI functions, use a workqueue to avoid deadlocking.
-	 */
-	schedule_work(&data->work);
-}
-
-static irqreturn_t yogabook_backside_hall_irq(int irq, void *_data)
-{
-	struct yogabook_wmi *data = _data;
-
-	if (gpiod_get_value(data->backside_hall_gpio))
-		set_bit(YB_TABLET_MODE, &data->flags);
-	else
-		clear_bit(YB_TABLET_MODE, &data->flags);
-
-	schedule_work(&data->work);
-
-	return IRQ_HANDLED;
-}
-
-static enum led_brightness kbd_brightness_get(struct led_classdev *cdev)
-{
-	struct yogabook_wmi *data =
-		container_of(cdev, struct yogabook_wmi, kbd_bl_led);
-
-	return data->brightness;
-}
-
-static int kbd_brightness_set(struct led_classdev *cdev,
-			      enum led_brightness value)
-{
-	struct yogabook_wmi *data =
-		container_of(cdev, struct yogabook_wmi, kbd_bl_led);
-	struct wmi_device *wdev = data->wdev;
-
-	if ((value < 0) || (value > 255))
-		return -EINVAL;
-
-	data->brightness = value;
-
-	if (data->kbd_adev->power.state != ACPI_STATE_D0)
-		return 0;
-
-	return yogabook_wmi_set_kbd_backlight(wdev, data->brightness);
-}
-
-static struct gpiod_lookup_table yogabook_wmi_gpios = {
-	.dev_id		= "243FEC1D-1963-41C1-8100-06A9D82A94B4",
-	.table		= {
-		GPIO_LOOKUP("INT33FF:02", 18, "backside_hall_sw", GPIO_ACTIVE_LOW),
-		{}
-	},
-};
-
-static void yogabook_wmi_rm_gpio_lookup(void *unused)
-{
-	gpiod_remove_lookup_table(&yogabook_wmi_gpios);
-}
-
-static int yogabook_wmi_probe(struct wmi_device *wdev, const void *context)
-{
-	struct yogabook_wmi *data;
-	int r;
-
-	data = devm_kzalloc(&wdev->dev, sizeof(struct yogabook_wmi), GFP_KERNEL);
-	if (data == NULL)
-		return -ENOMEM;
-
-	dev_set_drvdata(&wdev->dev, data);
-
-	data->wdev = wdev;
-	data->brightness = YB_KBD_BL_DEFAULT;
-	set_bit(YB_KBD_IS_ON, &data->flags);
-	set_bit(YB_DIGITIZER_IS_ON, &data->flags);
-
-	r = devm_work_autocancel(&wdev->dev, &data->work, yogabook_wmi_work);
-	if (r)
-		return r;
-
-	data->kbd_adev = acpi_dev_get_first_match_dev("GDIX1001", NULL, -1);
-	if (!data->kbd_adev) {
-		dev_err(&wdev->dev, "Cannot find the touchpad device in ACPI tables\n");
-		return -ENODEV;
-	}
-
-	data->dig_adev = acpi_dev_get_first_match_dev("WCOM0019", NULL, -1);
-	if (!data->dig_adev) {
-		dev_err(&wdev->dev, "Cannot find the digitizer device in ACPI tables\n");
-		r = -ENODEV;
-		goto error_put_devs;
-	}
-
-	data->kbd_dev = get_device(acpi_get_first_physical_node(data->kbd_adev));
-	if (!data->kbd_dev || !data->kbd_dev->driver) {
-		r = -EPROBE_DEFER;
-		goto error_put_devs;
-	}
-
-	data->dig_dev = get_device(acpi_get_first_physical_node(data->dig_adev));
-	if (!data->dig_dev || !data->dig_dev->driver) {
-		r = -EPROBE_DEFER;
-		goto error_put_devs;
-	}
-
-	gpiod_add_lookup_table(&yogabook_wmi_gpios);
-
-	r = devm_add_action_or_reset(&wdev->dev, yogabook_wmi_rm_gpio_lookup, NULL);
-	if (r)
-		goto error_put_devs;
-
-	data->backside_hall_gpio =
-		devm_gpiod_get(&wdev->dev, "backside_hall_sw", GPIOD_IN);
-	if (IS_ERR(data->backside_hall_gpio)) {
-		r = PTR_ERR(data->backside_hall_gpio);
-		dev_err_probe(&wdev->dev, r, "Getting backside_hall_sw GPIO\n");
-		goto error_put_devs;
-	}
-
-	r = gpiod_to_irq(data->backside_hall_gpio);
-	if (r < 0) {
-		dev_err_probe(&wdev->dev, r, "Getting backside_hall_sw IRQ\n");
-		goto error_put_devs;
-	}
-	data->backside_hall_irq = r;
-
-	r = devm_request_irq(&wdev->dev, data->backside_hall_irq,
-			     yogabook_backside_hall_irq,
-			     IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-			     "backside_hall_sw", data);
-	if (r) {
-		dev_err_probe(&wdev->dev, r, "Requesting backside_hall_sw IRQ\n");
-		goto error_put_devs;
-	}
-
-	schedule_work(&data->work);
-
-	data->kbd_bl_led.name = "ybwmi::kbd_backlight";
-	data->kbd_bl_led.brightness_set_blocking = kbd_brightness_set;
-	data->kbd_bl_led.brightness_get = kbd_brightness_get;
-	data->kbd_bl_led.max_brightness = 255;
-
-	r = devm_led_classdev_register(&wdev->dev, &data->kbd_bl_led);
-	if (r < 0) {
-		dev_err_probe(&wdev->dev, r, "Registering backlight LED device\n");
-		goto error_put_devs;
-	}
-
-	return 0;
-
-error_put_devs:
-	put_device(data->dig_dev);
-	put_device(data->kbd_dev);
-	acpi_dev_put(data->dig_adev);
-	acpi_dev_put(data->kbd_adev);
-	return r;
-}
-
-static void yogabook_wmi_remove(struct wmi_device *wdev)
-{
-	struct yogabook_wmi *data = dev_get_drvdata(&wdev->dev);
-
-	put_device(data->dig_dev);
-	put_device(data->kbd_dev);
-	acpi_dev_put(data->dig_adev);
-	acpi_dev_put(data->kbd_adev);
-}
-
-static int __maybe_unused yogabook_wmi_suspend(struct device *dev)
-{
-	struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
-	struct yogabook_wmi *data = dev_get_drvdata(dev);
-
-	set_bit(YB_SUSPENDED, &data->flags);
-
-	flush_work(&data->work);
-
-	/* Turn off the pen button at sleep */
-	if (test_bit(YB_DIGITIZER_IS_ON, &data->flags))
-		yogabook_wmi_do_action(wdev, YB_PAD_DISABLE);
-
-	return 0;
-}
-
-static int __maybe_unused yogabook_wmi_resume(struct device *dev)
-{
-	struct wmi_device *wdev = container_of(dev, struct wmi_device, dev);
-	struct yogabook_wmi *data = dev_get_drvdata(dev);
-
-	if (test_bit(YB_KBD_IS_ON, &data->flags)) {
-		/* Ensure keyboard touchpad is on before we call KBLC() */
-		acpi_device_set_power(data->kbd_adev, ACPI_STATE_D0);
-		yogabook_wmi_set_kbd_backlight(wdev, data->brightness);
-	}
-
-	if (test_bit(YB_DIGITIZER_IS_ON, &data->flags))
-		yogabook_wmi_do_action(wdev, YB_PAD_ENABLE);
-
-	clear_bit(YB_SUSPENDED, &data->flags);
-
-	/* Check for YB_TABLET_MODE changes made during suspend */
-	schedule_work(&data->work);
-
-	return 0;
-}
-
-static const struct wmi_device_id yogabook_wmi_id_table[] = {
-	{
-		.guid_string = YB_MBTN_EVENT_GUID,
-	},
-	{ } /* Terminating entry */
-};
-
-static SIMPLE_DEV_PM_OPS(yogabook_wmi_pm_ops,
-			 yogabook_wmi_suspend, yogabook_wmi_resume);
-
-static struct wmi_driver yogabook_wmi_driver = {
-	.driver = {
-		.name = "yogabook-wmi",
-		.pm = &yogabook_wmi_pm_ops,
-	},
-	.no_notify_data = true,
-	.id_table = yogabook_wmi_id_table,
-	.probe = yogabook_wmi_probe,
-	.remove = yogabook_wmi_remove,
-	.notify = yogabook_wmi_notify,
-};
-module_wmi_driver(yogabook_wmi_driver);
-
-MODULE_DEVICE_TABLE(wmi, yogabook_wmi_id_table);
-MODULE_AUTHOR("Yauhen Kharuzhy");
-MODULE_DESCRIPTION("Lenovo Yoga Book WMI driver");
-MODULE_LICENSE("GPL v2");