Hi linux-bluetooth, This patch series prepares the Bluetooth controller for system suspend by disconnecting all devices and preparing the event filter and LE whitelist with devices that can wake the system from suspend. The main motivation for doing this is so we can enable Bluetooth as a wake up source during suspend without it being noisy. Bluetooth should wake the system when a HID device receives user input but otherwise not send any events to the host. This patch series was tested on several Chromebooks with both btusb and hci_serdev on kernel 4.19. The set of tests was basically the following: * Reconnects after suspend succeed * HID devices can wake the system from suspend (needs some related bluez changes to call the Set Wake Capable management command) * System properly pauses and unpauses discovery + advertising around suspend * System does not wake from any events from non wakeable devices Please review and provide any feedback. Thanks Abhishek Abhishek Pandit-Subedi (2): Bluetooth: Add mgmt op set_wake_capable Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND include/net/bluetooth/hci.h | 30 +++- include/net/bluetooth/hci_core.h | 46 +++++ include/net/bluetooth/mgmt.h | 7 + net/bluetooth/hci_core.c | 71 ++++++++ net/bluetooth/hci_event.c | 24 ++- net/bluetooth/hci_request.c | 297 ++++++++++++++++++++++++++++--- net/bluetooth/hci_request.h | 4 +- net/bluetooth/mgmt.c | 94 +++++++++- 8 files changed, 537 insertions(+), 36 deletions(-) -- 2.25.0.341.g760bfbb309-goog
