[PATCH v1 23/34] platform/x86/panasonic-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/panasonic-laptop.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c
index cf845ee1c7b1..3f845802c1d3 100644
--- a/drivers/platform/x86/panasonic-laptop.c
+++ b/drivers/platform/x86/panasonic-laptop.c
@@ -833,9 +833,12 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc)
 		pr_err("Unknown hotkey event: 0x%04llx\n", result);
 }
 
-static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event)
+static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data)
 {
-	struct pcc_acpi *pcc = acpi_driver_data(device);
+	struct acpi_device *device = data;
+	struct pcc_acpi *pcc;
+
+	pcc = acpi_driver_data(device);
 
 	switch (event) {
 	case HKEY_NOTIFY:
@@ -1049,7 +1052,13 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device)
 	}
 
 	i8042_install_filter(panasonic_i8042_filter);
-	return 0;
+
+	result =  acpi_device_install_event_handler(device, ACPI_DEVICE_NOTIFY,
+						     acpi_pcc_hotkey_notify);
+	if (result)
+		goto out_platform;
+
+	return result;
 
 out_platform:
 	platform_device_unregister(pcc->platform);
@@ -1072,6 +1081,8 @@ static void acpi_pcc_hotkey_remove(struct acpi_device *device)
 	if (!device || !pcc)
 		return;
 
+	acpi_device_remove_event_handler(device, ACPI_DEVICE_NOTIFY, acpi_pcc_hotkey_notify);
+
 	i8042_remove_filter(panasonic_i8042_filter);
 
 	if (pcc->platform) {
-- 
2.38.1




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