On Thu, Aug 08, 2019 at 02:55:53PM +0530, Harish Bandi wrote:
> 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-hba...@codeaurora.org>
> ---
> 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);
> +
The commit message does not mention this change, it only talks about
adding a delay.
> 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;
> }
