[v1] Bluetooth: hci_qca: wait for Pre shutdown to command complete event before sending the Power off pulse
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Message ID 1565256353-4476-1-git-send-email-c-hbandi@codeaurora.org
State New
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Series
  • [v1] Bluetooth: hci_qca: wait for Pre shutdown to command complete event before sending the Power off pulse
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Commit Message

Harish Bandi Aug. 8, 2019, 9:25 a.m. UTC
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(-)

Comments

Balakrishna Godavarthi Aug. 8, 2019, 10:55 a.m. UTC | #1
Hi Harish,

On 2019-08-08 14:55, 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);

[Bala]: nit: can you also add reason in commit text for adding 
HCI_EV_CMD_COMPLETE

> +
>  	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;
>  }

Reviewed-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Matthias Kaehlcke Aug. 8, 2019, 2:59 p.m. UTC | #2
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.

>  	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;
>  }
Harish Bandi Aug. 9, 2019, 4:51 a.m. UTC | #3
Hi Bala,

On 2019-08-08 16:25, Balakrishna Godavarthi wrote:
> Hi Harish,
> 
> On 2019-08-08 14:55, 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);
> 
> [Bala]: nit: can you also add reason in commit text for adding
> HCI_EV_CMD_COMPLETE
[Harish] - I will add reason fo HCI_EV_CMD_COMPLETE in commit text and 
post new patch.
> 
>> +
>>  	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;
>>  }
> 
> Reviewed-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>

Thanks,
Harish
Harish Bandi Aug. 9, 2019, 5:12 a.m. UTC | #4
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;
>>  }

Patch
diff mbox series

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;
 }