[PATCH v4 12/35] platform/chromeos_tbmc: 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/chrome/chromeos_tbmc.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/chrome/chromeos_tbmc.c b/drivers/platform/chrome/chromeos_tbmc.c
index d1cf8f3463ce..ac0f43fc530a 100644
--- a/drivers/platform/chrome/chromeos_tbmc.c
+++ b/drivers/platform/chrome/chromeos_tbmc.c
@@ -45,8 +45,10 @@ static __maybe_unused int chromeos_tbmc_resume(struct device *dev)
 	return chromeos_tbmc_query_switch(adev, adev->driver_data);
 }
 
-static void chromeos_tbmc_notify(struct acpi_device *adev, u32 event)
+static void chromeos_tbmc_notify(acpi_handle handle, u32 event, void *data)
 {
+	struct acpi_device *adev = data;
+
 	acpi_pm_wakeup_event(&adev->dev);
 	switch (event) {
 	case 0x80:
@@ -92,7 +94,13 @@ static int chromeos_tbmc_add(struct acpi_device *adev)
 		return ret;
 	}
 	device_init_wakeup(dev, true);
-	return 0;
+
+	return acpi_device_install_event_handler(adev, ACPI_DEVICE_NOTIFY, chromeos_tbmc_notify);
+}
+
+static void chromeos_tbmc_remove(struct acpi_device *adev)
+{
+	acpi_device_remove_event_handler(adev, ACPI_DEVICE_NOTIFY, chromeos_tbmc_notify);
 }
 
 static const struct acpi_device_id chromeos_tbmc_acpi_device_ids[] = {
@@ -110,7 +118,7 @@ static struct acpi_driver chromeos_tbmc_driver = {
 	.ids = chromeos_tbmc_acpi_device_ids,
 	.ops = {
 		.add = chromeos_tbmc_add,
-		.notify = chromeos_tbmc_notify,
+		.remove = chromeos_tbmc_remove,
 	},
 	.drv.pm = &chromeos_tbmc_pm_ops,
 };
-- 
2.40.1




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