linux-kernel - Re: [PATCH v1 2/2] media: i2c: Add GC05A2 image sensor driver

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Date: Wed, 3 Apr 2024 04:24:36 +0000
From: Zhi Mao (毛智) <zhi.mao@...iatek.com>
To: "sakari.ailus@...ux.intel.com" <sakari.ailus@...ux.intel.com>
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Subject: Re: [PATCH v1 2/2] media: i2c: Add GC05A2 image sensor driver

Hi Sakari,

Update gc05a2 driver patch.

On Sat, 2024-03-23 at 10:59 +0800, zhi.mao@...iatek.com wrote:
> Hi Sakari,
> 
> Thanks for your review.
> 
> On Wed, 2024-03-20 at 07:29 +0000, Sakari Ailus wrote:
> >  	 
> > External email : Please do not click links or open attachments
> > until
> > you have verified the sender or the content.
> >  Hi Zhi,
> > 
> > Thanks for the set.
> > 
> > On Sat, Mar 16, 2024 at 10:52:53AM +0800, Zhi Mao wrote:
> > > +static int gc05a2_set_ctrl(struct v4l2_ctrl *ctrl)
> > > +{
> > > +struct gc05a2 *gc05a2 =
> > > +container_of(ctrl->handler, struct gc05a2, ctrls);
> > > +int ret = 0;
> > > +s64 exposure_max;
> > > +struct v4l2_subdev_state *state;
> > > +const struct v4l2_mbus_framefmt *format;
> > > +
> > > +state = v4l2_subdev_get_locked_active_state(&gc05a2->sd);
> > > +format = v4l2_subdev_state_get_format(state, 0);
> > > +
> > > +if (ctrl->id == V4L2_CID_VBLANK) {
> > > +/* Update max exposure while meeting expected vblanking */
> > > +exposure_max = format->height + ctrl->val - GC05A2_EXP_MARGIN;
> > > +__v4l2_ctrl_modify_range(gc05a2->exposure,
> > > + gc05a2->exposure->minimum,
> > > + exposure_max, gc05a2->exposure->step,
> > > + exposure_max);
> > > +}
> > > +
> > > +/*
> > > + * Applying V4L2 control value only happens
> > > + * when power is on for streaming.
> > > + */
> > > +if (!pm_runtime_get_if_in_use(gc05a2->dev))
> > 
> > This should be pm_runtime_get_if_active(). Please assume it takes a
> > single
> > argument (the device)---see commit
> > c0ef3df8dbaef51ee4cfd58a471adf2eaee6f6b3.
> > 
> > The same comment applies to the GC08A3 if it uses autosuspend,
> > please
> > post
> > a new patch for that.
> > 
> 
> fixed, patch as below: 
> gc05a patch:v2 
> 
> 
https://lore.kernel.org/linux-media/20240323014751.4989-1-zhi.mao@mediatek.com/
> 

gc05a driver was updated to patch:v3

https://lore.kernel.org/linux-media/20240403033825.9072-1-zhi.mao@mediatek.com/


> gc08a patch:v8
> 
> 
https://lore.kernel.org/linux-media/20240323023851.5503-1-zhi.mao@mediatek.com/
> 
> > -- 
> > Kind regards,
> > 
> > Sakari Ailus