Commit 91779665 authored May 12, 2020 by Abhishek Pandit-Subedi Committed by Marcel Holtmann May 13, 2020

Bluetooth: Modify LE window and interval for suspend

When a device is suspended, it doesn't need to be as responsive to
connection events. Increase the interval to 640ms (creating a duty cycle
of roughly 1.75%) so that passive scanning uses much less power (vs
previous duty cycle of 18.75%). The new window + interval combination
has been tested to work with HID devices (which are currently the only
devices capable of wake up).

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

parent aaebf8e6

net/bluetooth/hci_request.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -35,7 +35,7 @@
		#define HCI_REQ_CANCELED 2

		#define LE_SUSPEND_SCAN_WINDOW 0x0012
		#define LE_SUSPEND_SCAN_INTERVAL 0x0060
		#define LE_SUSPEND_SCAN_INTERVAL 0x0400

		void hci_req_init(struct hci_request req, struct hci_dev hdev)
		{

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