This devices the "data", "method" and "event" types.  All devices
get "instance_count" and "expensive" attributes, data and method
devices get "object_id" attributes, and event devices get
"notify_id" attributes.

Signed-off-by: Andy Lutomirski <[email protected]>
---
 drivers/platform/x86/wmi.c | 78 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 77 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index c181cf5ecdc6..5571ae7354a1 100644
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -653,13 +653,65 @@ static ssize_t guid_show(struct device *dev, struct 
device_attribute *attr,
 }
 static DEVICE_ATTR_RO(guid);
 
+static ssize_t instance_count_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
+{
+       struct wmi_block *wblock = dev_to_wblock(dev);
+
+       return sprintf(buf, "%d\n", (int)wblock->gblock.instance_count);
+}
+static DEVICE_ATTR_RO(instance_count);
+
+static ssize_t expensive_show(struct device *dev,
+                             struct device_attribute *attr, char *buf)
+{
+       struct wmi_block *wblock = dev_to_wblock(dev);
+
+       return sprintf(buf, "%d\n",
+                      (wblock->gblock.flags & ACPI_WMI_EXPENSIVE) != 0);
+}
+static DEVICE_ATTR_RO(expensive);
+
 static struct attribute *wmi_attrs[] = {
        &dev_attr_modalias.attr,
        &dev_attr_guid.attr,
+       &dev_attr_instance_count.attr,
+       &dev_attr_expensive.attr,
        NULL,
 };
 ATTRIBUTE_GROUPS(wmi);
 
+static ssize_t notify_id_show(struct device *dev, struct device_attribute 
*attr,
+                             char *buf)
+{
+       struct wmi_block *wblock = dev_to_wblock(dev);
+
+       return sprintf(buf, "%02X\n", (unsigned int)wblock->gblock.notify_id);
+}
+static DEVICE_ATTR_RO(notify_id);
+
+static struct attribute *wmi_event_attrs[] = {
+       &dev_attr_notify_id.attr,
+       NULL,
+};
+ATTRIBUTE_GROUPS(wmi_event);
+
+static ssize_t object_id_show(struct device *dev, struct device_attribute 
*attr,
+                             char *buf)
+{
+       struct wmi_block *wblock = dev_to_wblock(dev);
+
+       return sprintf(buf, "%c%c\n", wblock->gblock.object_id[0],
+                      wblock->gblock.object_id[1]);
+}
+static DEVICE_ATTR_RO(object_id);
+
+static struct attribute *wmi_data_or_method_attrs[] = {
+       &dev_attr_object_id.attr,
+       NULL,
+};
+ATTRIBUTE_GROUPS(wmi_data_or_method);
+
 static int wmi_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
        struct wmi_block *wblock = dev_to_wblock(dev);
@@ -749,6 +801,24 @@ static struct bus_type wmi_bus_type = {
        .remove = wmi_dev_remove,
 };
 
+static struct device_type wmi_type_event = {
+       .name = "event",
+       .groups = wmi_event_groups,
+       .release = wmi_dev_release,
+};
+
+static struct device_type wmi_type_method = {
+       .name = "method",
+       .groups = wmi_data_or_method_groups,
+       .release = wmi_dev_release,
+};
+
+static struct device_type wmi_type_data = {
+       .name = "data",
+       .groups = wmi_data_or_method_groups,
+       .release = wmi_dev_release,
+};
+
 static int wmi_create_device(struct device *wmi_bus_dev,
                             const struct guid_block *gblock,
                             struct wmi_block *wblock,
@@ -759,7 +829,13 @@ static int wmi_create_device(struct device *wmi_bus_dev,
 
        dev_set_name(&wblock->dev.dev, "%pUL", gblock->guid);
 
-       wblock->dev.dev.release = wmi_dev_release;
+       if (gblock->flags & ACPI_WMI_EVENT) {
+               wblock->dev.dev.type = &wmi_type_event;
+       } else if (gblock->flags & ACPI_WMI_METHOD) {
+               wblock->dev.dev.type = &wmi_type_method;
+       } else {
+               wblock->dev.dev.type = &wmi_type_data;
+       }
 
        return device_register(&wblock->dev.dev);
 }
-- 
2.5.0

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