Messages in this thread | | | Date | Fri, 09 Aug 2019 10:42:07 +0530 | From | Harish Bandi <> | Subject | Re: [PATCH v1] Bluetooth: hci_qca: wait for Pre shutdown to command complete event before sending the Power off pulse |
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Hi Matthias,
On 2019-08-08 20:29, Matthias Kaehlcke wrote: > 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-hbandi@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.
[Harish] - I will add reason fo HCI_EV_CMD_COMPLETE in commit text and post new patch. In commit text title I mentioned about command complete event, However I will add more details about reason for command complete in commit text
> >> 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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