[PATCH v1] Bluetooth: hci_qca: wait for Pre shutdown to command complete event before sending the Power off pulse

[Harish Bandi]

When SoC receives pre shut down command, it share the same
with other COEX shared clients. So SoC needs a short
time after sending VS pre shutdown command before
turning off the regulators and sending the power off pulse.

Signed-off-by: Harish Bandi <c-hbandi@xxxxxxxxxxxxxx>
---
 drivers/bluetooth/btqca.c   | 5 +++--
 drivers/bluetooth/hci_qca.c | 2 ++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btqca.c b/drivers/bluetooth/btqca.c
index 2221935..f20991e 100644
--- a/drivers/bluetooth/btqca.c
+++ b/drivers/bluetooth/btqca.c
@@ -106,8 +106,9 @@ int qca_send_pre_shutdown_cmd(struct hci_dev *hdev)
 
 	bt_dev_dbg(hdev, "QCA pre shutdown cmd");
 
-	skb = __hci_cmd_sync(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
-				NULL, HCI_INIT_TIMEOUT);
+	skb = __hci_cmd_sync_ev(hdev, QCA_PRE_SHUTDOWN_CMD, 0,
+				NULL, HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
+
 	if (IS_ERR(skb)) {
 		err = PTR_ERR(skb);
 		bt_dev_err(hdev, "QCA preshutdown_cmd failed (%d)", err);
diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 16db6c0..566aa28 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -1386,6 +1386,8 @@ static int qca_power_off(struct hci_dev *hdev)
 	/* Perform pre shutdown command */
 	qca_send_pre_shutdown_cmd(hdev);
 
+	usleep_range(8000, 10000);
+
 	qca_power_shutdown(hu);
 	return 0;
 }
-- 
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