Re: [PATCH v2 2/7] media: i2c: imx219: Switch from open to init_cfg

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Hi Umang

On Sat, Jul 29, 2023 at 07:38:32PM +0530, Umang Jain wrote:
> Hi Jacopo,
>
> On 7/10/23 9:21 PM, Jacopo Mondi wrote:
> > From: Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxxxxxxxx>
> >
> > Use the init_cfg pad level operation instead of the internal subdev
> > open operation to set default formats on the pads.
> >
> > Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@xxxxxxxxxxxxxxxx>
> > Signed-off-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
> > Reviewed-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
> > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > ---
> >   drivers/media/i2c/imx219.c | 63 +++++++++++++++++++-------------------
> >   1 file changed, 31 insertions(+), 32 deletions(-)
> >
> > diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
> > index ac6b0e7a838d..45b219321d98 100644
> > --- a/drivers/media/i2c/imx219.c
> > +++ b/drivers/media/i2c/imx219.c
> > @@ -608,34 +608,6 @@ static void imx219_set_default_format(struct imx219 *imx219)
> >   	fmt->field = V4L2_FIELD_NONE;
> >   }
> > -static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
> > -{
> > -	struct imx219 *imx219 = to_imx219(sd);
> > -	struct v4l2_mbus_framefmt *try_fmt =
> > -		v4l2_subdev_get_try_format(sd, fh->state, 0);
> > -	struct v4l2_rect *try_crop;
> > -
> > -	mutex_lock(&imx219->mutex);
> > -
> > -	/* Initialize try_fmt */
> > -	try_fmt->width = supported_modes[0].width;
> > -	try_fmt->height = supported_modes[0].height;
> > -	try_fmt->code = imx219_get_format_code(imx219,
> > -					       MEDIA_BUS_FMT_SRGGB10_1X10);
> > -	try_fmt->field = V4L2_FIELD_NONE;
> > -
> > -	/* Initialize try_crop rectangle. */
> > -	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
> > -	try_crop->top = IMX219_PIXEL_ARRAY_TOP;
> > -	try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
> > -	try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
> > -	try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
> > -
> > -	mutex_unlock(&imx219->mutex);
> > -
> > -	return 0;
> > -}
> > -
> >   static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
> >   {
> >   	struct imx219 *imx219 =
> > @@ -725,6 +697,36 @@ static const struct v4l2_ctrl_ops imx219_ctrl_ops = {
> >   	.s_ctrl = imx219_set_ctrl,
> >   };
> > +static int imx219_init_cfg(struct v4l2_subdev *sd,
> > +			   struct v4l2_subdev_state *state)
> > +{
> > +	struct imx219 *imx219 = to_imx219(sd);
> > +	struct v4l2_mbus_framefmt *format;
> > +	struct v4l2_rect *crop;
> > +
> > +	/* imx219_get_format_code() wants mutex locked. */
> > +	mutex_lock(&imx219->mutex);
> > +
> > +	/* Initialize try_fmt */
> > +	format = v4l2_subdev_get_pad_format(sd, state, 0);
> > +	format->width = supported_modes[0].width;
> > +	format->height = supported_modes[0].height;
> > +	format->code = imx219_get_format_code(imx219,
> > +					      MEDIA_BUS_FMT_SRGGB10_1X10);
> > +	format->field = V4L2_FIELD_NONE;
> > +
> > +	/* Initialize crop rectangle. */
> > +	crop = v4l2_subdev_get_pad_crop(sd, state, 0);
> > +	crop->top = IMX219_PIXEL_ARRAY_TOP;
> > +	crop->left = IMX219_PIXEL_ARRAY_LEFT;
> > +	crop->width = IMX219_PIXEL_ARRAY_WIDTH;
> > +	crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
> > +
> > +	mutex_unlock(&imx219->mutex);
> > +
> > +	return 0;
> > +}
> > +
> >   static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
> >   				 struct v4l2_subdev_state *sd_state,
> >   				 struct v4l2_subdev_mbus_code_enum *code)
> > @@ -1235,6 +1237,7 @@ static const struct v4l2_subdev_video_ops imx219_video_ops = {
> >   };
> >   static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
> > +	.init_cfg = imx219_init_cfg,
> >   	.enum_mbus_code = imx219_enum_mbus_code,
> >   	.get_fmt = imx219_get_pad_format,
> >   	.set_fmt = imx219_set_pad_format,
> > @@ -1248,9 +1251,6 @@ static const struct v4l2_subdev_ops imx219_subdev_ops = {
> >   	.pad = &imx219_pad_ops,
> >   };
> > -static const struct v4l2_subdev_internal_ops imx219_internal_ops = {
> > -	.open = imx219_open,
> > -};
>
> nit: maybe this extra line needs deletion?

Ah yes indeed!

Thanks and sorry for missing it!

>
> with that,
>
> Reviewed-by: Umang Jain <umang.jain@xxxxxxxxxxxxxxxx>
>
> >   static unsigned long imx219_get_pixel_rate(struct imx219 *imx219)
> >   {
> > @@ -1509,7 +1509,6 @@ static int imx219_probe(struct i2c_client *client)
> >   		goto error_power_off;
> >   	/* Initialize subdev */
> > -	imx219->sd.internal_ops = &imx219_internal_ops;
> >   	imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
> >   			    V4L2_SUBDEV_FL_HAS_EVENTS;
> >   	imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
>



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