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Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND

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Register for PM_SUSPEND_PREPARE and PM_POST_SUSPEND to make sure the
Bluetooth controller is prepared correctly for suspend/resume. Implement
the registration, scheduling and task handling portions only in this
patch.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Abhishek Pandit-Subedi
2020-03-11 08:54:00 -07:00
committed by Marcel Holtmann
parent 72da7b2cca
commit 9952d90ea2
4 changed files with 126 additions and 0 deletions
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15
net/bluetooth/hci_request.c
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@@ -918,6 +918,21 @@ static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance)
return adv_instance->scan_rsp_len;
}
/* Call with hci_dev_lock */
void hci_req_prepare_suspend(struct hci_dev *hdev, enum suspended_state next)
{
if (next == hdev->suspend_state) {
bt_dev_dbg(hdev, "Same state before and after: %d", next);
goto done;
}
hdev->suspend_state = next;
done:
clear_bit(SUSPEND_PREPARE_NOTIFIER, hdev->suspend_tasks);
wake_up(&hdev->suspend_wait_q);
}
static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
{
u8 instance = hdev->cur_adv_instance;