diff mbox

ACPI: CPPC: Support PCC with interrupt flag

Message ID 1469135265-27048-1-git-send-email-hotran@apm.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

hotran July 21, 2016, 9:07 p.m. UTC
For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
function to notify the mailbox framework about TX completion.

Signed-off-by: Hoan Tran <hotran@apm.com>
---
This patch is tested on top and depends on patch[1]:
[1] http://www.spinics.net/lists/linux-acpi/msg66041.html
 - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2

 drivers/acpi/cppc_acpi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Comments

hotran Aug. 30, 2016, 6:20 p.m. UTC | #1
On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@apm.com> wrote:
> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
> function to notify the mailbox framework about TX completion.
>
> Signed-off-by: Hoan Tran <hotran@apm.com>
> ---
> This patch is tested on top and depends on patch[1]:
> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
>
>  drivers/acpi/cppc_acpi.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> index 2e98173..19606aa 100644
> --- a/drivers/acpi/cppc_acpi.c
> +++ b/drivers/acpi/cppc_acpi.c
> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
>                         last_cmd_cmpl_time = ktime_get();
>         }
>
> -       mbox_client_txdone(pcc_channel, ret);
> +       if (pcc_channel->mbox->txdone_irq)
> +               mbox_chan_txdone(pcc_channel, ret);
> +       else
> +               mbox_client_txdone(pcc_channel, ret);
> +
>         return ret;
>  }
>
> --
> 1.9.1
>

Any feedbacks.

Thanks
Hoan
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hotran Sept. 14, 2016, 3:45 p.m. UTC | #2
On Tue, Aug 30, 2016 at 11:20 AM, Hoan Tran <hotran@apm.com> wrote:
> On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@apm.com> wrote:
>> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
>> function to notify the mailbox framework about TX completion.
>>
>> Signed-off-by: Hoan Tran <hotran@apm.com>
>> ---
>> This patch is tested on top and depends on patch[1]:
>> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
>>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
>>
>>  drivers/acpi/cppc_acpi.c | 6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> index 2e98173..19606aa 100644
>> --- a/drivers/acpi/cppc_acpi.c
>> +++ b/drivers/acpi/cppc_acpi.c
>> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
>>                         last_cmd_cmpl_time = ktime_get();
>>         }
>>
>> -       mbox_client_txdone(pcc_channel, ret);
>> +       if (pcc_channel->mbox->txdone_irq)
>> +               mbox_chan_txdone(pcc_channel, ret);
>> +       else
>> +               mbox_client_txdone(pcc_channel, ret);
>> +
>>         return ret;
>>  }
>>
>> --
>> 1.9.1
>>
>
> Any feedbacks.
>
> Thanks
> Hoan

Hi Rafael,

Do you have any comments on this patch ?

Thanks
Hoan
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Prakash, Prashanth Sept. 14, 2016, 3:45 p.m. UTC | #3
Hi Hoan,

On 8/30/2016 12:20 PM, Hoan Tran wrote:
> On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@apm.com> wrote:
>> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
>> function to notify the mailbox framework about TX completion.
>>
>> Signed-off-by: Hoan Tran <hotran@apm.com>
>> ---
>> This patch is tested on top and depends on patch[1]:
>> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
>>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
>>
>>  drivers/acpi/cppc_acpi.c | 6 +++++-
>>  1 file changed, 5 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> index 2e98173..19606aa 100644
>> --- a/drivers/acpi/cppc_acpi.c
>> +++ b/drivers/acpi/cppc_acpi.c
>> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
>>                         last_cmd_cmpl_time = ktime_get();
>>         }
>>
>> -       mbox_client_txdone(pcc_channel, ret);
>> +       if (pcc_channel->mbox->txdone_irq)
>> +               mbox_chan_txdone(pcc_channel, ret);
>> +       else
>> +               mbox_client_txdone(pcc_channel, ret);
>> +
Firstly, sorry for the delay.

I was wondering if we should call txdone in PCC interrupt routine as done in
some of the mailbox drivers. But then, since we need to support both polling
and interrupt, I suppose this makes sense.

Reviewed-by: Prashanth Prakash <pprakash@codeaurora.org>

Thanks,
Prashanth
>>         return ret;
>>  }
>>
>> --
>> 1.9.1
>>
> Any feedbacks.
>
> Thanks
> Hoan

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Rafael J. Wysocki Sept. 14, 2016, 4:49 p.m. UTC | #4
On Wednesday, September 14, 2016 08:45:14 AM Hoan Tran wrote:
> On Tue, Aug 30, 2016 at 11:20 AM, Hoan Tran <hotran@apm.com> wrote:
> > On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@apm.com> wrote:
> >> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
> >> function to notify the mailbox framework about TX completion.
> >>
> >> Signed-off-by: Hoan Tran <hotran@apm.com>
> >> ---
> >> This patch is tested on top and depends on patch[1]:
> >> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
> >>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
> >>
> >>  drivers/acpi/cppc_acpi.c | 6 +++++-
> >>  1 file changed, 5 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
> >> index 2e98173..19606aa 100644
> >> --- a/drivers/acpi/cppc_acpi.c
> >> +++ b/drivers/acpi/cppc_acpi.c
> >> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
> >>                         last_cmd_cmpl_time = ktime_get();
> >>         }
> >>
> >> -       mbox_client_txdone(pcc_channel, ret);
> >> +       if (pcc_channel->mbox->txdone_irq)
> >> +               mbox_chan_txdone(pcc_channel, ret);
> >> +       else
> >> +               mbox_client_txdone(pcc_channel, ret);
> >> +
> >>         return ret;
> >>  }
> >>
> >> --
> >> 1.9.1
> >>
> >
> > Any feedbacks.
> >
> > Thanks
> > Hoan
> 
> Hi Rafael,
> 
> Do you have any comments on this patch ?

No, but can you please resend it (with the Reviewed-by tag from Prashanth,
preferably)?  And please make sure it applies on my linux-next branch.

Thanks,
Rafael

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hotran Sept. 14, 2016, 5:55 p.m. UTC | #5
On Wed, Sep 14, 2016 at 9:49 AM, Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> On Wednesday, September 14, 2016 08:45:14 AM Hoan Tran wrote:
>> On Tue, Aug 30, 2016 at 11:20 AM, Hoan Tran <hotran@apm.com> wrote:
>> > On Thu, Jul 21, 2016 at 2:07 PM, Hoan Tran <hotran@apm.com> wrote:
>> >> For PCC mailbox with interrupt flag, CPPC should call mbox_chan_txdone()
>> >> function to notify the mailbox framework about TX completion.
>> >>
>> >> Signed-off-by: Hoan Tran <hotran@apm.com>
>> >> ---
>> >> This patch is tested on top and depends on patch[1]:
>> >> [1] http://www.spinics.net/lists/linux-acpi/msg66041.html
>> >>  - [PATCH v3] mailbox: pcc: Support HW-Reduced Communication Subspace type 2
>> >>
>> >>  drivers/acpi/cppc_acpi.c | 6 +++++-
>> >>  1 file changed, 5 insertions(+), 1 deletion(-)
>> >>
>> >> diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
>> >> index 2e98173..19606aa 100644
>> >> --- a/drivers/acpi/cppc_acpi.c
>> >> +++ b/drivers/acpi/cppc_acpi.c
>> >> @@ -191,7 +191,11 @@ static int send_pcc_cmd(u16 cmd)
>> >>                         last_cmd_cmpl_time = ktime_get();
>> >>         }
>> >>
>> >> -       mbox_client_txdone(pcc_channel, ret);
>> >> +       if (pcc_channel->mbox->txdone_irq)
>> >> +               mbox_chan_txdone(pcc_channel, ret);
>> >> +       else
>> >> +               mbox_client_txdone(pcc_channel, ret);
>> >> +
>> >>         return ret;
>> >>  }
>> >>
>> >> --
>> >> 1.9.1
>> >>
>> >
>> > Any feedbacks.
>> >
>> > Thanks
>> > Hoan
>>
>> Hi Rafael,
>>
>> Do you have any comments on this patch ?
>
> No, but can you please resend it (with the Reviewed-by tag from Prashanth,
> preferably)?  And please make sure it applies on my linux-next branch.

Hi Rafael,

I just resent the patch with Reviewed-by tag

Thanks
Hoan

>
> Thanks,
> Rafael
>
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diff mbox

Patch

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 2e98173..19606aa 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -191,7 +191,11 @@  static int send_pcc_cmd(u16 cmd)
 			last_cmd_cmpl_time = ktime_get();
 	}
 
-	mbox_client_txdone(pcc_channel, ret);
+	if (pcc_channel->mbox->txdone_irq)
+		mbox_chan_txdone(pcc_channel, ret);
+	else
+		mbox_client_txdone(pcc_channel, ret);
+
 	return ret;
 }