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Subject[PATCH] Bluetooth: btusb: Add debugfs to force toggling remote wakeup
From
From: Archie Pusaka <apusaka@chromium.org>

Sometimes we want the controller to not wake the host up, e.g. to
save the battery. Add some debugfs knobs to force the wake by BT
behavior.

Signed-off-by: Archie Pusaka <apusaka@chromium.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@google.com>

---

drivers/bluetooth/btusb.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 8bede0a335668..846b15fc3c04c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -873,6 +873,9 @@ struct btusb_data {
unsigned cmd_timeout_cnt;

struct qca_dump_info qca_dump;
+
+ bool force_enable_remote_wake;
+ bool force_disable_remote_wake;
};

static void btusb_reset(struct hci_dev *hdev)
@@ -4596,6 +4599,10 @@ static int btusb_probe(struct usb_interface *intf,

debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
&force_poll_sync_fops);
+ debugfs_create_bool("force_enable_remote_wake", 0644, hdev->debugfs,
+ &data->force_enable_remote_wake);
+ debugfs_create_bool("force_disable_remote_wake", 0644, hdev->debugfs,
+ &data->force_disable_remote_wake);

return 0;

@@ -4702,6 +4709,18 @@ static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
}
}

+ if (!PMSG_IS_AUTO(message)) {
+ if (data->force_enable_remote_wake) {
+ data->udev->do_remote_wakeup = 1;
+ if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
+ data->udev->reset_resume = 0;
+ } else if (data->force_disable_remote_wake) {
+ data->udev->do_remote_wakeup = 0;
+ if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
+ data->udev->reset_resume = 1;
+ }
+ }
+
return 0;
}

--
2.44.0.769.g3c40516874-goog

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