Bluetooth: Add controller types for BR/EDR and 802.11 AMP

With the Bluetooth 3.0 specification and the introduction of alternate
MAC/PHY (AMP) support, it is required to differentiate between primary
BR/EDR controllers and 802.11 AMP controllers. So introduce a special
type inside HCI device for differentiation.

For now all AMP controllers will be treated as raw devices until an
AMP manager has been implemented.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index f9d93f9cbcd2..1a79a6c7e30e 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -192,12 +192,30 @@ static inline char *host_bustostr(int bus)
         }
 }
 
+static inline char *host_typetostr(int type)
+{
+        switch (type) {
+        case HCI_BREDR:
+                return "BR/EDR";
+        case HCI_80211:
+                return "802.11";
+        default:
+                return "UNKNOWN";
+        }
+}
+
 static ssize_t show_bus(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct hci_dev *hdev = dev_get_drvdata(dev);
         return sprintf(buf, "%s\n", host_bustostr(hdev->bus));
 }
 
+static ssize_t show_type(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct hci_dev *hdev = dev_get_drvdata(dev);
+        return sprintf(buf, "%s\n", host_typetostr(hdev->dev_type));
+}
+
 static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct hci_dev *hdev = dev_get_drvdata(dev);
@@ -334,6 +352,7 @@ static ssize_t store_sniff_min_interval(struct device *dev, struct device_attrib
 }
 
 static DEVICE_ATTR(bus, S_IRUGO, show_bus, NULL);
+static DEVICE_ATTR(type, S_IRUGO, show_type, NULL);
 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 static DEVICE_ATTR(class, S_IRUGO, show_class, NULL);
 static DEVICE_ATTR(address, S_IRUGO, show_address, NULL);
@@ -351,6 +370,7 @@ static DEVICE_ATTR(sniff_min_interval, S_IRUGO | S_IWUSR,
 
 static struct attribute *bt_host_attrs[] = {
         &dev_attr_bus.attr,
+        &dev_attr_type.attr,
         &dev_attr_name.attr,
         &dev_attr_class.attr,
         &dev_attr_address.attr,