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Date: Fri, 12 Apr 2024 09:38:51 +0000
From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Zhi Mao <zhi.mao@mediatek.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
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Subject: Re: [PATCH 2/2] media: i2c: Add GT97xx VCM driver
Message-ID: <ZhkBIee2X0UY40yD@kekkonen.localdomain>
References: <20240410104002.1197-1-zhi.mao@mediatek.com>
 <20240410104002.1197-3-zhi.mao@mediatek.com>
 <CAHp75VfF0pbrKXjWZg7sTr-T=_CbjP+deFQP-VLCGX8ooahctg@mail.gmail.com>
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In-Reply-To: <CAHp75VfF0pbrKXjWZg7sTr-T=_CbjP+deFQP-VLCGX8ooahctg@mail.gmail.com>

Hi Andy, Zhi,

On Wed, Apr 10, 2024 at 07:00:02PM +0300, Andy Shevchenko wrote:
> > +static int gt97xx_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> > +{
> > +       return pm_runtime_resume_and_get(sd->dev);
> > +}
> > +
> > +static int gt97xx_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> > +{
> > +       return pm_runtime_put(sd->dev);
> > +}
> 
> Hmm... Shouldn't v4l2 take care about these (PM calls)?

Ideally yes. We don't have a good mechanism for this at the moment as the
lens isn't part of the image pipeline. Non-data links may be used for this
in the future but that's not implemented yet.

-- 
Regards,

Sakari Ailus