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From: Benoit Parrot <bparrot@ti.com>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>,
	<linux-media@vger.kernel.org>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, Dave Gerlach <d-gerlach@ti.com>
Subject: Re: [Patch 01/13] media: am437x-vpfe: Fix suspend path to always handle pinctrl config
Date: Fri, 13 Sep 2019 08:24:24 -0500	[thread overview]
Message-ID: <20190913132424.abjlxpu7f7rtx7rc@ti.com> (raw)
In-Reply-To: <9250638e-52a4-c7bc-e969-763d45528780@xs4all.nl>

Thanks for the reviews.

Hans Verkuil <hverkuil@xs4all.nl> wrote on Fri [2019-Sep-13 14:59:28 +0200]:
> On 9/9/19 6:27 PM, Benoit Parrot wrote:
> > From: Dave Gerlach <d-gerlach@ti.com>
> > 
> > Currently if vpfe is not active then it returns immediately in the
> > suspend and resume handlers. Change this so that it always performs the
> > pinctrl config so that we can still get proper sleep state configuration
> > on the pins even if we do not need to worry about fully saving and
> > restoring context.
> > 
> > Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> > Signed-off-by: Benoit Parrot <bparrot@ti.com>
> > ---
> >  drivers/media/platform/am437x/am437x-vpfe.c | 44 ++++++++++-----------
> >  1 file changed, 22 insertions(+), 22 deletions(-)
> > 
> > diff --git a/drivers/media/platform/am437x/am437x-vpfe.c b/drivers/media/platform/am437x/am437x-vpfe.c
> > index 2b42ba1f5949..ab959d61f9c9 100644
> > --- a/drivers/media/platform/am437x/am437x-vpfe.c
> > +++ b/drivers/media/platform/am437x/am437x-vpfe.c
> > @@ -2653,22 +2653,22 @@ static int vpfe_suspend(struct device *dev)
> >  	struct vpfe_device *vpfe = dev_get_drvdata(dev);
> >  	struct vpfe_ccdc *ccdc = &vpfe->ccdc;
> >  
> > -	/* if streaming has not started we don't care */
> > -	if (!vb2_start_streaming_called(&vpfe->buffer_queue))
> > -		return 0;
> > +	/* only do full suspend if streaming has started */
> > +	if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
> >  
> 
> It's a bit ugly to start a block with an empty line. Can you remove it?

Yep no problem.

> 
> > -	pm_runtime_get_sync(dev);
> > -	vpfe_config_enable(ccdc, 1);
> > +		pm_runtime_get_sync(dev);
> > +		vpfe_config_enable(ccdc, 1);
> >  
> > -	/* Save VPFE context */
> > -	vpfe_save_context(ccdc);
> > +		/* Save VPFE context */
> > +		vpfe_save_context(ccdc);
> >  
> > -	/* Disable CCDC */
> > -	vpfe_pcr_enable(ccdc, 0);
> > -	vpfe_config_enable(ccdc, 0);
> > +		/* Disable CCDC */
> > +		vpfe_pcr_enable(ccdc, 0);
> > +		vpfe_config_enable(ccdc, 0);
> >  
> > -	/* Disable both master and slave clock */
> > -	pm_runtime_put_sync(dev);
> > +		/* Disable both master and slave clock */
> > +		pm_runtime_put_sync(dev);
> > +	}
> >  
> >  	/* Select sleep pin state */
> >  	pinctrl_pm_select_sleep_state(dev);
> > @@ -2710,19 +2710,19 @@ static int vpfe_resume(struct device *dev)
> >  	struct vpfe_device *vpfe = dev_get_drvdata(dev);
> >  	struct vpfe_ccdc *ccdc = &vpfe->ccdc;
> >  
> > -	/* if streaming has not started we don't care */
> > -	if (!vb2_start_streaming_called(&vpfe->buffer_queue))
> > -		return 0;
> > +	/* only do full resume if streaming has started */
> > +	if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
> >  
> 
> Ditto.

Yep no problem.

> 
> > -	/* Enable both master and slave clock */
> > -	pm_runtime_get_sync(dev);
> > -	vpfe_config_enable(ccdc, 1);
> > +		/* Enable both master and slave clock */
> > +		pm_runtime_get_sync(dev);
> > +		vpfe_config_enable(ccdc, 1);
> >  
> > -	/* Restore VPFE context */
> > -	vpfe_restore_context(ccdc);
> > +		/* Restore VPFE context */
> > +		vpfe_restore_context(ccdc);
> >  
> > -	vpfe_config_enable(ccdc, 0);
> > -	pm_runtime_put_sync(dev);
> > +		vpfe_config_enable(ccdc, 0);
> > +		pm_runtime_put_sync(dev);
> > +	}
> >  
> >  	/* Select default pin state */
> >  	pinctrl_pm_select_default_state(dev);
> > 
> 
> Regards,
> 
> 	Hans

  reply	other threads:[~2019-09-13 13:22 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-09 16:27 [Patch 00/13] media: am437x-vpfe: overdue maintenance Benoit Parrot
2019-09-09 16:27 ` [Patch 01/13] media: am437x-vpfe: Fix suspend path to always handle pinctrl config Benoit Parrot
2019-09-13 12:59   ` Hans Verkuil
2019-09-13 13:24     ` Benoit Parrot [this message]
2019-09-09 16:27 ` [Patch 02/13] media: am437x-vpfe: Fix missing first line Benoit Parrot
2019-09-13 13:00   ` Hans Verkuil
2019-09-13 13:25     ` Benoit Parrot
2019-09-09 16:27 ` [Patch 03/13] media: am437x-vpfe: Rework ISR routine for clarity Benoit Parrot
2019-09-09 16:27 ` [Patch 04/13] media: am437x-vpfe: Wait for end of frame before tear-down Benoit Parrot
2019-09-09 16:27 ` [Patch 05/13] media: am437x-vpfe: Streamlined vb2 buffer cleanup Benoit Parrot
2019-09-16  8:00   ` Lad, Prabhakar
2019-09-16 14:53     ` Benoit Parrot
2019-09-16 16:02       ` Lad, Prabhakar
2019-09-09 16:27 ` [Patch 06/13] media: am437x-vpfe: Setting STD to current value is not an error Benoit Parrot
2019-09-09 16:27 ` [Patch 07/13] media: am437x-vpfe: Use a per instance format array instead of a static one Benoit Parrot
2019-09-13 13:07   ` Hans Verkuil
2019-09-13 13:29     ` Benoit Parrot
2019-09-17 16:19     ` Benoit Parrot
2019-09-09 16:27 ` [Patch 08/13] media: am437x-vpfe: Maintain a reference to the current vpfe_fmt Benoit Parrot
2019-09-13 13:14   ` Hans Verkuil
2019-09-13 13:32     ` Benoit Parrot
2019-09-13 13:34       ` Hans Verkuil
2019-09-13 13:43         ` Benoit Parrot
2019-09-09 16:27 ` [Patch 09/13] media: am437x-vpfe: fix function trace debug log Benoit Parrot
2019-09-09 16:54   ` Joe Perches
2019-09-09 17:14     ` Benoit Parrot
2019-09-09 16:27 ` [Patch 10/13] media: am437x-vpfe: Remove print_fourcc helper Benoit Parrot
2019-09-09 16:39   ` Joe Perches
2019-09-09 17:12     ` Benoit Parrot
2019-09-09 16:27 ` [Patch 11/13] media: am437x-vpfe: TRY_FMT ioctl is not really trying anything Benoit Parrot
2019-09-09 16:27 ` [Patch 12/13] media: am437x-vpfe: Remove per bus width static data Benoit Parrot
2019-09-13 13:19   ` Hans Verkuil
2019-09-13 13:34     ` Benoit Parrot
2019-09-09 16:27 ` [Patch 13/13] media: am437x-vpfe: Switch to SPDX Licensing Benoit Parrot
2019-09-10 10:42 ` [Patch 00/13] media: am437x-vpfe: overdue maintenance Hans Verkuil
2019-09-10 16:20   ` Benoit Parrot

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