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authorSukumar Ghorai <sukumar.ghorai@intel.com>2017-08-17 00:46:55 +0300
committerMarcel Holtmann <marcel@holtmann.org>2017-08-16 12:48:46 +0300
commita0085f2510e8976614ad8f766b209448b385492f (patch)
tree7bfb74958d38acd57cb4581008e795cd3a4bd456 /drivers/bluetooth
parent9834e586fa664781c22a970d254c60610bd9a1af (diff)
downloadlinux-a0085f2510e8976614ad8f766b209448b385492f.tar.xz
Bluetooth: btusb: driver to enable the usb-wakeup feature
BT-Controller connected as platform non-root-hub device and usb-driver initialize such device with wakeup disabled, Ref. usb_new_device(). At present wakeup-capability get enabled by hid-input device from usb function driver(e.g. BT HID device) at runtime. Again some functional driver does not set usb-wakeup capability(e.g LE HID device implement as HID-over-GATT), and can't wakeup the host on USB. Most of the device operation (such as mass storage) initiated from host (except HID) and USB wakeup aligned with host resume procedure. For BT device, usb-wakeup capability need to enable form btusc driver as a generic solution for multiple profile use case and required for USB remote wakeup (in-bus wakeup) while host is suspended. Also usb-wakeup feature need to enable/disable with HCI interface up and down. Signed-off-by: Sukumar Ghorai <sukumar.ghorai@intel.com> Signed-off-by: Amit K Bag <amit.k.bag@intel.com> Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/btusb.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index e8d8a3f61f5b..7a5c06aaa181 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1088,6 +1088,10 @@ static int btusb_open(struct hci_dev *hdev)
}
data->intf->needs_remote_wakeup = 1;
+ /* device specific wakeup source enabled and required for USB
+ * remote wakeup while host is suspended
+ */
+ device_wakeup_enable(&data->udev->dev);
if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
goto done;
@@ -1151,6 +1155,7 @@ static int btusb_close(struct hci_dev *hdev)
goto failed;
data->intf->needs_remote_wakeup = 0;
+ device_wakeup_disable(&data->udev->dev);
usb_autopm_put_interface(data->intf);
failed: