| Message ID | 20200311155404.209990-1-abhishekpandit@chromium.org |
|---|---|
| Headers | show |
| Series | Bluetooth: Handle system suspend gracefully | expand |
Hi Abhishek, > 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 > > Series 2 has refactored the change into multiple smaller commits as > requested. I tried to simplify some of the whitelist filtering edge > cases but unfortunately it remains quite complex. > > Series 3 has refactored it further and should have resolved the > whitelisting complexity in series 2. > > Series 4 adds a fix to check for powered down and powering down adapters. > > Series 5 moves set_wake_capable to the last patch in the series and > changes BT_DBG to bt_dev_dbg. > > Please review and provide any feedback. > > Thanks > Abhishek > > > Changes in v6: > * Removed unused variables in hci_req_prepare_suspend > * Add int old_state to this patch > > Changes in v5: > * Convert BT_DBG to bt_dev_dbg > * Added wakeable list and changed BT_DBG to bt_dev_dbg > * Add wakeable to hci_conn_params and change BT_DBG to bt_dev_dbg > * Changed BT_DBG to bt_dev_dbg > * Wakeable entries moved to other commits > * Patch moved to end of series > > Changes in v4: > * Added check for mgmt_powering_down and hdev_is_powered in notifier > > Changes in v3: > * Refactored to only handle BR/EDR devices > * Split LE changes into its own commit > * Added wakeable property to le_conn_param > * Use wakeable list for BR/EDR and wakeable property for LE > > Changes in v2: > * Moved pm notifier registration into its own patch and moved params out > of separate suspend_state > * Refactored filters and whitelist settings to its own patch > * Refactored update_white_list to have clearer edge cases > * Add connected devices to whitelist (previously missing corner case) > * Refactored pause discovery + advertising into its own patch > > Abhishek Pandit-Subedi (5): > Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND > Bluetooth: Handle BR/EDR devices during suspend > Bluetooth: Handle LE devices during suspend > Bluetooth: Pause discovery and advertising during suspend > Bluetooth: Add mgmt op set_wake_capable > > include/net/bluetooth/hci.h | 17 +- > include/net/bluetooth/hci_core.h | 43 ++++ > include/net/bluetooth/mgmt.h | 7 + > net/bluetooth/hci_core.c | 102 ++++++++++ > net/bluetooth/hci_event.c | 24 +++ > net/bluetooth/hci_request.c | 331 ++++++++++++++++++++++++++----- > net/bluetooth/hci_request.h | 2 + > net/bluetooth/mgmt.c | 92 +++++++++ > 8 files changed, 558 insertions(+), 60 deletions(-) patches 1-4 have been applied to bluetooth-next tree. I skipped patch 5 since now we have to discuss how best the API for setting the wakeable devices will be. Care to start up a discussion thread for that? Regards Marcel
Let's continue the discussion on the bluez list. I will update the patch series so that the "set_wake_capable" management change is last in the series there as well and send out an update today. Thanks Abhishek On Wed, Mar 11, 2020 at 10:05 AM Marcel Holtmann <marcel@holtmann.org> wrote: > > Hi Abhishek, > > > 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 > > > > Series 2 has refactored the change into multiple smaller commits as > > requested. I tried to simplify some of the whitelist filtering edge > > cases but unfortunately it remains quite complex. > > > > Series 3 has refactored it further and should have resolved the > > whitelisting complexity in series 2. > > > > Series 4 adds a fix to check for powered down and powering down adapters. > > > > Series 5 moves set_wake_capable to the last patch in the series and > > changes BT_DBG to bt_dev_dbg. > > > > Please review and provide any feedback. > > > > Thanks > > Abhishek > > > > > > Changes in v6: > > * Removed unused variables in hci_req_prepare_suspend > > * Add int old_state to this patch > > > > Changes in v5: > > * Convert BT_DBG to bt_dev_dbg > > * Added wakeable list and changed BT_DBG to bt_dev_dbg > > * Add wakeable to hci_conn_params and change BT_DBG to bt_dev_dbg > > * Changed BT_DBG to bt_dev_dbg > > * Wakeable entries moved to other commits > > * Patch moved to end of series > > > > Changes in v4: > > * Added check for mgmt_powering_down and hdev_is_powered in notifier > > > > Changes in v3: > > * Refactored to only handle BR/EDR devices > > * Split LE changes into its own commit > > * Added wakeable property to le_conn_param > > * Use wakeable list for BR/EDR and wakeable property for LE > > > > Changes in v2: > > * Moved pm notifier registration into its own patch and moved params out > > of separate suspend_state > > * Refactored filters and whitelist settings to its own patch > > * Refactored update_white_list to have clearer edge cases > > * Add connected devices to whitelist (previously missing corner case) > > * Refactored pause discovery + advertising into its own patch > > > > Abhishek Pandit-Subedi (5): > > Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND > > Bluetooth: Handle BR/EDR devices during suspend > > Bluetooth: Handle LE devices during suspend > > Bluetooth: Pause discovery and advertising during suspend > > Bluetooth: Add mgmt op set_wake_capable > > > > include/net/bluetooth/hci.h | 17 +- > > include/net/bluetooth/hci_core.h | 43 ++++ > > include/net/bluetooth/mgmt.h | 7 + > > net/bluetooth/hci_core.c | 102 ++++++++++ > > net/bluetooth/hci_event.c | 24 +++ > > net/bluetooth/hci_request.c | 331 ++++++++++++++++++++++++++----- > > net/bluetooth/hci_request.h | 2 + > > net/bluetooth/mgmt.c | 92 +++++++++ > > 8 files changed, 558 insertions(+), 60 deletions(-) > > patches 1-4 have been applied to bluetooth-next tree. > > I skipped patch 5 since now we have to discuss how best the API for setting the wakeable devices will be. Care to start up a discussion thread for that? > > Regards > > Marcel >