platform/x86: intel-wmi-sbl-fw-update: Use bus-based WMI interface

Currently, the driver was still using the deprecated GUID-based
interface to query/set data blocks. Use the modern bus-based
interface for this.

Tested with a custom SSDT from the Intel Slim Bootloader project.
Reviewed-by: Jithu Joseph <jithu.joseph@intel.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20231103182526.3524-3-W_Armin@gmx.deReviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/intel/wmi/sbl-fw-update.c

@@ -25,18 +25,13 @@
 
 static int get_fwu_request(struct device *dev, u32 *out)
 {
-	struct acpi_buffer result = {ACPI_ALLOCATE_BUFFER, NULL};
 	union acpi_object *obj;
-	acpi_status status;
 
-	status = wmi_query_block(INTEL_WMI_SBL_GUID, 0, &result);
-	if (ACPI_FAILURE(status)) {
-		dev_err(dev, "wmi_query_block failed\n");
+	obj = wmidev_block_query(to_wmi_device(dev), 0);
+	if (!obj)
 		return -ENODEV;
-	}
 
-	obj = (union acpi_object *)result.pointer;
-	if (!obj || obj->type != ACPI_TYPE_INTEGER) {
+	if (obj->type != ACPI_TYPE_INTEGER) {
 		dev_warn(dev, "wmi_query_block returned invalid value\n");
 		kfree(obj);
 		return -EINVAL;
@@ -58,7 +53,7 @@ static int set_fwu_request(struct device *dev, u32 in)
 	input.length = sizeof(u32);
 	input.pointer = &value;
 
-	status = wmi_set_block(INTEL_WMI_SBL_GUID, 0, &input);
+	status = wmidev_block_set(to_wmi_device(dev), 0, &input);
 	if (ACPI_FAILURE(status)) {
 		dev_err(dev, "wmi_set_block failed\n");
 		return -ENODEV;

drivers/platform/x86/wmi.c

@@ -106,6 +106,7 @@ MODULE_DEVICE_TABLE(acpi, wmi_device_ids);
 static const char * const allow_duplicates[] = {
 	"05901221-D566-11D1-B2F0-00A0C9062910",	/* wmi-bmof */
 	"8A42EA14-4F2A-FD45-6422-0087F7A7E608",	/* dell-wmi-ddv */
+	"44FADEB1-B204-40F2-8581-394BBDC1B651",	/* intel-wmi-sbl-fw-update */
 	NULL
 };