[PATCH v2 17/34] platform/x86/asus-wireless: Move handler installing logic to driver

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Currently logic for installing notifications from ACPI devices is
implemented using notify callback in struct acpi_driver. Preparations
are being made to replace acpi_driver with more generic struct
platform_driver, which doesn't contain notify callback. Furthermore
as of now handlers are being called indirectly through
acpi_notify_device(), which decreases performance.

Call acpi_device_install_event_handler() at the end of .add() callback.
Call acpi_device_remove_event_handler() at the beginning of .remove()
callback. Change arguments passed to the notify callback to match with
what's required by acpi_device_install_event_handler().

Signed-off-by: Michal Wilczynski <michal.wilczynski@xxxxxxxxx>
---
 drivers/platform/x86/asus-wireless.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/drivers/platform/x86/asus-wireless.c b/drivers/platform/x86/asus-wireless.c
index abf01e00b799..6544e3419ae4 100644
--- a/drivers/platform/x86/asus-wireless.c
+++ b/drivers/platform/x86/asus-wireless.c
@@ -108,19 +108,22 @@ static void led_state_set(struct led_classdev *led, enum led_brightness value)
 	queue_work(data->wq, &data->led_work);
 }
 
-static void asus_wireless_notify(struct acpi_device *adev, u32 event)
+static void asus_wireless_notify(acpi_handle handle, u32 event, void *data)
 {
-	struct asus_wireless_data *data = acpi_driver_data(adev);
+	struct asus_wireless_data *w_data;
+	struct acpi_device *adev = data;
+
+	w_data = acpi_driver_data(adev);
 
 	dev_dbg(&adev->dev, "event=%#x\n", event);
 	if (event != 0x88) {
 		dev_notice(&adev->dev, "Unknown ASHS event: %#x\n", event);
 		return;
 	}
-	input_report_key(data->idev, KEY_RFKILL, 1);
-	input_sync(data->idev);
-	input_report_key(data->idev, KEY_RFKILL, 0);
-	input_sync(data->idev);
+	input_report_key(w_data->idev, KEY_RFKILL, 1);
+	input_sync(w_data->idev);
+	input_report_key(w_data->idev, KEY_RFKILL, 0);
+	input_sync(w_data->idev);
 }
 
 static int asus_wireless_add(struct acpi_device *adev)
@@ -169,16 +172,20 @@ static int asus_wireless_add(struct acpi_device *adev)
 	data->led.max_brightness = 1;
 	data->led.default_trigger = "rfkill-none";
 	err = devm_led_classdev_register(&adev->dev, &data->led);
-	if (err)
+	if (err) {
 		destroy_workqueue(data->wq);
+		return err;
+	}
 
-	return err;
+	return acpi_device_install_event_handler(adev, ACPI_DEVICE_NOTIFY, asus_wireless_notify);
 }
 
 static void asus_wireless_remove(struct acpi_device *adev)
 {
 	struct asus_wireless_data *data = acpi_driver_data(adev);
 
+	acpi_device_remove_event_handler(adev, ACPI_DEVICE_NOTIFY, asus_wireless_notify);
+
 	if (data->wq) {
 		devm_led_classdev_unregister(&adev->dev, &data->led);
 		destroy_workqueue(data->wq);
@@ -192,7 +199,6 @@ static struct acpi_driver asus_wireless_driver = {
 	.ops = {
 		.add = asus_wireless_add,
 		.remove = asus_wireless_remove,
-		.notify = asus_wireless_notify,
 	},
 };
 module_acpi_driver(asus_wireless_driver);
-- 
2.40.1




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