[PATCH v2 1/3] Bluetooth: Add mgmt suspend and resume events

[Abhishek Pandit-Subedi]

Add the controller suspend and resume events, which will signal when
Bluetooth has completed preparing for suspend and when it's ready for
resume.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpan...@chromium.org>
Reviewed-by: Miao-chen Chou <mcc...@chromium.org>
Reviewed-by: Sonny Sasaka <sonnysas...@chromium.org>
---

Changes in v2:
- Added suspend/resume events to list of mgmt events

 include/net/bluetooth/hci_core.h |  3 +++
 include/net/bluetooth/mgmt.h     | 11 +++++++++++
 net/bluetooth/mgmt.c             | 26 ++++++++++++++++++++++++++
 3 files changed, 40 insertions(+)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 8caac20556b499..02a6ee056b2374 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1750,6 +1750,9 @@ void mgmt_device_found(struct hci_dev *hdev, bdaddr_t 
*bdaddr, u8 link_type,
 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
+void mgmt_suspending(struct hci_dev *hdev, u8 state);
+void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
+                  u8 addr_type);
 bool mgmt_powering_down(struct hci_dev *hdev);
 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index 9ad505b9e694e4..e19e33c7b65c34 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -1030,3 +1030,14 @@ struct mgmt_ev_adv_monitor_added {
 struct mgmt_ev_adv_monitor_removed {
        __le16 monitor_handle;
 }  __packed;
+
+#define MGMT_EV_CONTROLLER_SUSPEND             0x002d
+struct mgmt_ev_controller_suspend {
+       __u8    suspend_state;
+} __packed;
+
+#define MGMT_EV_CONTROLLER_RESUME              0x002e
+struct mgmt_ev_controller_resume {
+       __u8    wake_reason;
+       struct mgmt_addr_info addr;
+} __packed;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index e1d12494d16e14..db48ee3c213cbd 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -163,6 +163,8 @@ static const u16 mgmt_events[] = {
        MGMT_EV_PHY_CONFIGURATION_CHANGED,
        MGMT_EV_EXP_FEATURE_CHANGED,
        MGMT_EV_DEVICE_FLAGS_CHANGED,
+       MGMT_EV_CONTROLLER_SUSPEND,
+       MGMT_EV_CONTROLLER_RESUME,
 };
 
 static const u16 mgmt_untrusted_commands[] = {
@@ -8874,6 +8876,30 @@ void mgmt_discovering(struct hci_dev *hdev, u8 
discovering)
        mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL);
 }
 
+void mgmt_suspending(struct hci_dev *hdev, u8 state)
+{
+       struct mgmt_ev_controller_suspend ev;
+
+       ev.suspend_state = state;
+       mgmt_event(MGMT_EV_CONTROLLER_SUSPEND, hdev, &ev, sizeof(ev), NULL);
+}
+
+void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
+                  u8 addr_type)
+{
+       struct mgmt_ev_controller_resume ev;
+
+       ev.wake_reason = reason;
+       if (bdaddr) {
+               bacpy(&ev.addr.bdaddr, bdaddr);
+               ev.addr.type = addr_type;
+       } else {
+               memset(&ev.addr, 0, sizeof(ev.addr));
+       }
+
+       mgmt_event(MGMT_EV_CONTROLLER_RESUME, hdev, &ev, sizeof(ev), NULL);
+}
+
 static struct hci_mgmt_chan chan = {
        .channel        = HCI_CHANNEL_CONTROL,
        .handler_count  = ARRAY_SIZE(mgmt_handlers),
-- 
2.28.0.618.gf4bc123cb7-goog