[PATCH v4 16/35] platform/x86/asus-laptop: 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-laptop.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index 761029f39314..6d2f5767bf70 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -1515,11 +1515,14 @@ static void asus_input_exit(struct asus_laptop *asus)
 /*
  * ACPI driver
  */
-static void asus_acpi_notify(struct acpi_device *device, u32 event)
+static void asus_acpi_notify(acpi_handle handle, u32 event, void *data)
 {
-	struct asus_laptop *asus = acpi_driver_data(device);
+	struct acpi_device *device = data;
+	struct asus_laptop *asus;
 	u16 count;
 
+	asus = acpi_driver_data(device);
+
 	/* TODO Find a better way to handle events count. */
 	count = asus->event_count[event % 128]++;
 	acpi_bus_generate_netlink_event(asus->device->pnp.device_class,
@@ -1880,6 +1883,10 @@ static int asus_acpi_add(struct acpi_device *device)
 	if (result && result != -ENODEV)
 		goto fail_pega_rfkill;
 
+	result =  acpi_device_install_event_handler(device, ACPI_ALL_NOTIFY, asus_acpi_notify);
+	if (result)
+		goto fail_pega_rfkill;
+
 	asus_device_present = true;
 	return 0;
 
@@ -1905,6 +1912,7 @@ static void asus_acpi_remove(struct acpi_device *device)
 {
 	struct asus_laptop *asus = acpi_driver_data(device);
 
+	acpi_device_remove_event_handler(device, ACPI_ALL_NOTIFY, asus_acpi_notify);
 	asus_backlight_exit(asus);
 	asus_rfkill_exit(asus);
 	asus_led_exit(asus);
@@ -1928,11 +1936,9 @@ static struct acpi_driver asus_acpi_driver = {
 	.class = ASUS_LAPTOP_CLASS,
 	.owner = THIS_MODULE,
 	.ids = asus_device_ids,
-	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = asus_acpi_add,
 		.remove = asus_acpi_remove,
-		.notify = asus_acpi_notify,
 		},
 };
 
-- 
2.40.1




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