Merge "floss: Keep uhid when wake-allowed hid is bonded to fix wakeup" into main (e7a0e357) · Commits · e / os / android_packages_modules_Bluetooth

system/gd/rust/linux/stack/src/bluetooth.rs

+48 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@ use bt_topshim::{

		use bt_utils::array_utils;
		use bt_utils::cod::{is_cod_hid_combo, is_cod_hid_keyboard};
		use bt_utils::uhid::{UHid, BD_ADDR_DEFAULT};
		use btif_macros::{btif_callback, btif_callbacks_dispatcher};

		use log::{debug, warn};
		@@ -512,6 +513,9 @@ pub struct Bluetooth {

		/// Used to notify signal handler that we have turned off the stack.
		sig_notifier: Arc<SigData>,

		/// Virtual uhid device created to keep bluetooth as a wakeup source.
		uhid_wakeup_source: UHid,
		}

		impl Bluetooth {
		@@ -561,6 +565,7 @@ impl Bluetooth {
		discoverable_timeout: None,
		cancelling_devices: HashSet::new(),
		sig_notifier,
		uhid_wakeup_source: UHid::new(),
		}
		}

		@@ -1106,6 +1111,38 @@ impl Bluetooth {
		self.start_discovery();
		}
		}

		/// Return if there are wake-allowed device in bonded status.
		fn get_wake_allowed_device_bonded(&self) -> bool {
		self.get_bonded_devices().into_iter().any(\|d\| self.get_remote_wake_allowed(d))
		}

		/// Powerd recognizes bluetooth activities as valid wakeup sources if powerd keeps bluetooth in
		/// the monitored path. This only happens if there is at least one valid wake-allowed BT device
		/// connected during the suspending process. If there is no BT devices connected at any time
		/// during the suspending process, the wakeup count will be lost, and system goes to dark
		/// resume instead of full resume.
		/// Bluetooth stack disconnects all physical bluetooth HID devices for suspend, so a virtual
		/// uhid device is necessary to keep bluetooth as a valid wakeup source.
		fn create_uhid_for_suspend_wakesource(&mut self) {
		if !self.uhid_wakeup_source.is_empty() {
		return;
		}
		let adapter_addr = self.get_address().to_lowercase();
		match self.uhid_wakeup_source.create(
		"suspend uhid".to_string(),
		adapter_addr,
		String::from(BD_ADDR_DEFAULT),
		) {
		Err(e) => log::error!("Fail to create uhid {}", e),
		Ok(_) => (),
		}
		}

		/// Clear the UHID device.
		fn clear_uhid(&mut self) {
		self.uhid_wakeup_source.clear();
		}
		}

		#[btif_callbacks_dispatcher(dispatch_base_callbacks, BaseCallbacks)]
		@@ -1254,6 +1291,8 @@ impl BtifBluetoothCallbacks for Bluetooth {
		_ => (),
		}

		self.clear_uhid();

		// Let the signal notifier know we are turned off.
		*self.sig_notifier.enabled.lock().unwrap() = false;
		self.sig_notifier.enabled_notify.notify_all();
		@@ -1282,6 +1321,9 @@ impl BtifBluetoothCallbacks for Bluetooth {
		// Ensure device is connectable so that disconnected device can reconnect
		self.set_connectable(true);

		if self.get_wake_allowed_device_bonded() {
		self.create_uhid_for_suspend_wakesource();
		}
		// Notify the signal notifier that we are turned on.
		*self.sig_notifier.enabled.lock().unwrap() = true;
		self.sig_notifier.enabled_notify.notify_all();
		@@ -1513,6 +1555,9 @@ impl BtifBluetoothCallbacks for Bluetooth {
		self.found_devices
		.entry(address.clone())
		.and_modify(\|d\| d.bond_state = bond_state.clone());
		if !self.get_wake_allowed_device_bonded() {
		self.clear_uhid();
		}
		}
		// We will only insert into the bonded list after bonding is complete
		else if &bond_state == &BtBondState::Bonded && !self.bonded_devices.contains_key(&address)
		@@ -1539,6 +1584,9 @@ impl BtifBluetoothCallbacks for Bluetooth {
		device.services_resolved = false;
		self.bonded_devices.insert(address.clone(), device);
		self.fetch_remote_uuids(device_info);
		if self.get_wake_allowed_device_bonded() {
		self.create_uhid_for_suspend_wakesource();
		}
		} else {
		// If we're bonding, we need to update the found devices list
		self.found_devices

system/gd/rust/linux/stack/src/suspend.rs

+0 −26

Original line number	Diff line number	Diff line
		@@ -13,7 +13,6 @@ use std::sync::{Arc, Mutex};
		use tokio::sync::mpsc::Sender;

		use bt_utils::socket::{BtSocket, HciChannels, MgmtCommand, HCI_DEV_NONE};
		use bt_utils::uhid::UHid;

		/// Defines the Suspend/Resume API.
		///
		@@ -66,9 +65,6 @@ const MASKED_EVENTS_FOR_SUSPEND: u64 = (1u64 << 4) \| (1u64 << 19);
		/// However, we will need to delay a few seconds to avoid co-ex issues with Wi-Fi reconnection.
		const RECONNECT_AUDIO_ON_RESUME_DELAY_MS: u64 = 3000;

		/// Default address for a virtual uhid device.
		const BD_ADDR_DEFAULT: &str = "00:00:00:00:00:00";

		/// TODO(b/286268874) Remove after the synchronization issue is resolved.
		/// Delay sending suspend ready signal by some time.
		const LE_RAND_CB_SUSPEND_READY_DELAY_MS: u64 = 100;
		@@ -153,9 +149,6 @@ pub struct Suspend {
		connectable_to_restore: bool,
		/// Bluetooth adapter discoverable mode before suspending.
		discoverable_mode_to_restore: BtDiscMode,

		/// Virtual uhid device created during suspend.
		uhid: UHid,
		}

		impl Suspend {
		@@ -179,7 +172,6 @@ impl Suspend {
		suspend_state: Arc::new(Mutex::new(SuspendState::new())),
		connectable_to_restore: false,
		discoverable_mode_to_restore: BtDiscMode::NonDiscoverable,
		uhid: UHid::new(),
		}
		}

		@@ -219,11 +211,6 @@ impl Suspend {
		let bonded_connected = self.bt.lock().unwrap().get_bonded_and_connected_devices();
		self.media.lock().unwrap().filter_to_connected_audio_devices_from(&bonded_connected)
		}

		fn get_wake_allowed_device_bonded(&self) -> bool {
		let bt = self.bt.lock().unwrap();
		bt.get_bonded_devices().into_iter().any(\|d\| bt.get_remote_wake_allowed(d))
		}
		}

		impl ISuspend for Suspend {
		@@ -270,18 +257,6 @@ impl ISuspend for Suspend {
		self.audio_reconnect_joinhandle = None;
		}

		if self.get_wake_allowed_device_bonded() {
		let adapter_addr = self.bt.lock().unwrap().get_address().to_lowercase();
		match self.uhid.create(
		"suspend uhid".to_string(),
		adapter_addr,
		String::from(BD_ADDR_DEFAULT),
		) {
		Err(e) => log::error!("Fail to create uhid {}", e),
		Ok(_) => (),
		}
		}

		self.intf.lock().unwrap().disconnect_all_acls();

		// Handle wakeful cases (Connected/Other)
		@@ -319,7 +294,6 @@ impl ISuspend for Suspend {
		fn resume(&mut self) -> bool {
		let hci_index = self.bt.lock().unwrap().get_hci_index();
		notify_suspend_state(hci_index, false);
		self.uhid.clear();

		self.intf.lock().unwrap().set_default_event_mask_except(0u64, 0u64);

system/gd/rust/linux/utils/src/uhid.rs

+8 −0

Original line number	Diff line number	Diff line
		@@ -7,6 +7,9 @@ use uhid_virt::{Bus, CreateParams, UHIDDevice};
		const VID_DEFAULT: u32 = 0x0000;
		const PID_DEFAULT: u32 = 0x0000;

		/// Default address for a virtual uhid device.
		pub const BD_ADDR_DEFAULT: &str = "00:00:00:00:00:00";

		// Report descriptor for a standard mouse
		const RDESC: [u8; 50] = [
		0x05, 0x01, // USAGE_PAGE (Generic Desktop)
		@@ -86,4 +89,9 @@ impl UHid {
		}
		self.devices.clear();
		}

		/// Return if the UHID vector is empty.
		pub fn is_empty(&self) -> bool {
		self.devices.is_empty()
		}
		}