diff mbox series

[v7,07/13] media: tvp5150: add FORMAT_TRY support for get/set selection handlers

Message ID 20190815115747.24018-8-m.felsch@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series Add TVP5150 features | expand

Commit Message

Marco Felsch Aug. 15, 2019, 11:57 a.m. UTC
Since commit 10d5509c8d50 ("[media] v4l2: remove g/s_crop from video ops")
the 'which' field for set/get_selection must be FORMAT_ACTIVE. There is
no way to try different selections. The patch adds a helper function to
select the correct selection memory space (sub-device file handle or
driver state) which will be set/returned.

The TVP5150 AVID will be updated if the 'which' field is FORMAT_ACTIVE
and the requested selection rectangle differs from the already set one.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>

---
Changelog:

v7:
- __tvp5150_get_pad_crop(): return error on default case
- simplify __tvp5150_get_pad_crop() error handling
- tvp5150_set_selection() squash __tvp5150_set_selection() execution
  conditions
v6:
nothing
v5:
 - handle stub for v4l2_subdev_get_try_crop() internal since commit
   ("media: v4l2-subdev: add stubs for v4l2_subdev_get_try_*")
   isn't anymore part of this series.
 - add error handling of __tvp5150_get_pad_crop()
v4:
 - fix merge conflict due to rebase on top of media-tree/master
 - __tvp5150_get_pad_crop(): cosmetic alignment fixes
---
 drivers/media/i2c/tvp5150.c | 118 +++++++++++++++++++++++++-----------
 1 file changed, 84 insertions(+), 34 deletions(-)

Comments

Hans Verkuil Aug. 16, 2019, 11:27 a.m. UTC | #1
On 8/15/19 1:57 PM, Marco Felsch wrote:
> Since commit 10d5509c8d50 ("[media] v4l2: remove g/s_crop from video ops")
> the 'which' field for set/get_selection must be FORMAT_ACTIVE. There is
> no way to try different selections. The patch adds a helper function to
> select the correct selection memory space (sub-device file handle or
> driver state) which will be set/returned.
> 
> The TVP5150 AVID will be updated if the 'which' field is FORMAT_ACTIVE
> and the requested selection rectangle differs from the already set one.
> 
> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> 
> ---
> Changelog:
> 
> v7:
> - __tvp5150_get_pad_crop(): return error on default case
> - simplify __tvp5150_get_pad_crop() error handling
> - tvp5150_set_selection() squash __tvp5150_set_selection() execution
>   conditions
> v6:
> nothing
> v5:
>  - handle stub for v4l2_subdev_get_try_crop() internal since commit
>    ("media: v4l2-subdev: add stubs for v4l2_subdev_get_try_*")
>    isn't anymore part of this series.
>  - add error handling of __tvp5150_get_pad_crop()
> v4:
>  - fix merge conflict due to rebase on top of media-tree/master
>  - __tvp5150_get_pad_crop(): cosmetic alignment fixes
> ---
>  drivers/media/i2c/tvp5150.c | 118 +++++++++++++++++++++++++-----------
>  1 file changed, 84 insertions(+), 34 deletions(-)
> 
> diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
> index dfbf5bbc307c..ad59e65e6771 100644
> --- a/drivers/media/i2c/tvp5150.c
> +++ b/drivers/media/i2c/tvp5150.c
> @@ -19,6 +19,7 @@
>  #include <media/v4l2-ctrls.h>
>  #include <media/v4l2-fwnode.h>
>  #include <media/v4l2-mc.h>
> +#include <media/v4l2-rect.h>
>  
>  #include "tvp5150_reg.h"
>  
> @@ -994,20 +995,44 @@ static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop)
>  		crop->height = TVP5150_V_MAX_OTHERS;
>  }
>  
> +static struct v4l2_rect *
> +__tvp5150_get_pad_crop(struct tvp5150 *decoder,
> +		       struct v4l2_subdev_pad_config *cfg, unsigned int pad,
> +		       enum v4l2_subdev_format_whence which)
> +{
> +	switch (which) {
> +	case V4L2_SUBDEV_FORMAT_TRY:
> +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
> +		return v4l2_subdev_get_try_crop(&decoder->sd, cfg, pad);
> +#else
> +		return ERR_PTR(-ENOTTY);

That should be ERR_PTR(-EINVAL). Just because V4L2_SUBDEV_API is undefined, that
doesn't mean that the whole functionality is not implemented! Just the TRY
is not available.

> +#endif
> +	case V4L2_SUBDEV_FORMAT_ACTIVE:
> +		return &decoder->rect;
> +	default:
> +		return ERR_PTR(-EINVAL);
> +	}
> +}
> +
>  static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
>  			    struct v4l2_subdev_pad_config *cfg,
>  			    struct v4l2_subdev_format *format)
>  {
>  	struct v4l2_mbus_framefmt *f;
> +	struct v4l2_rect *__crop;
>  	struct tvp5150 *decoder = to_tvp5150(sd);
>  
>  	if (!format || (format->pad != TVP5150_PAD_VID_OUT))
>  		return -EINVAL;
>  
>  	f = &format->format;
> +	__crop = __tvp5150_get_pad_crop(decoder, cfg, format->pad,
> +					format->which);
> +	if (IS_ERR(__crop))
> +		return PTR_ERR(__crop);
>  
> -	f->width = decoder->rect.width;
> -	f->height = decoder->rect.height / 2;
> +	f->width = __crop->width;
> +	f->height = __crop->height / 2;
>  
>  	f->code = TVP5150_MBUS_FMT;
>  	f->field = TVP5150_FIELD;
> @@ -1018,17 +1043,51 @@ static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
>  	return 0;
>  }
>  
> +unsigned int tvp5150_get_hmax(struct v4l2_subdev *sd)
> +{
> +	struct tvp5150 *decoder = to_tvp5150(sd);
> +	v4l2_std_id std;
> +
> +	/* Calculate height based on current standard */
> +	if (decoder->norm == V4L2_STD_ALL)
> +		std = tvp5150_read_std(sd);
> +	else
> +		std = decoder->norm;
> +
> +	return (std & V4L2_STD_525_60) ?
> +		TVP5150_V_MAX_525_60 : TVP5150_V_MAX_OTHERS;
> +}
> +
> +static inline void
> +__tvp5150_set_selection(struct v4l2_subdev *sd, struct v4l2_rect rect)
> +{
> +	struct tvp5150 *decoder = to_tvp5150(sd);
> +	unsigned int hmax = tvp5150_get_hmax(sd);
> +
> +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
> +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
> +		     rect.top + rect.height - hmax);
> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
> +		     rect.left >> TVP5150_CROP_SHIFT);
> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
> +		     rect.left | (1 << TVP5150_CROP_SHIFT));
> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
> +		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
> +		     TVP5150_CROP_SHIFT);
> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
> +		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
> +}
> +
>  static int tvp5150_set_selection(struct v4l2_subdev *sd,
>  				 struct v4l2_subdev_pad_config *cfg,
>  				 struct v4l2_subdev_selection *sel)
>  {
>  	struct tvp5150 *decoder = to_tvp5150(sd);
>  	struct v4l2_rect rect = sel->r;
> -	v4l2_std_id std;
> -	int hmax;
> +	struct v4l2_rect *__crop;

No need for __ prefix.

> +	unsigned int hmax;
>  
> -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
> -	    sel->target != V4L2_SEL_TGT_CROP)
> +	if (sel->target != V4L2_SEL_TGT_CROP)
>  		return -EINVAL;
>  
>  	dev_dbg_lvl(sd->dev, 1, debug, "%s left=%d, top=%d, width=%d, height=%d\n",
> @@ -1037,17 +1096,7 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
>  	/* tvp5150 has some special limits */
>  	rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
>  	rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
> -
> -	/* Calculate height based on current standard */
> -	if (decoder->norm == V4L2_STD_ALL)
> -		std = tvp5150_read_std(sd);
> -	else
> -		std = decoder->norm;
> -
> -	if (std & V4L2_STD_525_60)
> -		hmax = TVP5150_V_MAX_525_60;
> -	else
> -		hmax = TVP5150_V_MAX_OTHERS;
> +	hmax = tvp5150_get_hmax(sd);
>  
>  	/*
>  	 * alignments:
> @@ -1060,20 +1109,19 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
>  			      hmax - TVP5150_MAX_CROP_TOP - rect.top,
>  			      hmax - rect.top, 0, 0);
>  
> -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
> -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
> -		     rect.top + rect.height - hmax);
> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
> -		     rect.left >> TVP5150_CROP_SHIFT);
> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
> -		     rect.left | (1 << TVP5150_CROP_SHIFT));
> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
> -		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
> -		     TVP5150_CROP_SHIFT);
> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
> -		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
> +	__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);

If SUBDEV_API is not defined, then just set *__crop = rect and return 0;

See also the commit log of commit fa564e90257e.

> +	if (IS_ERR(__crop))
> +		return PTR_ERR(__crop);
>  
> -	decoder->rect = rect;
> +	/*
> +	 * Update output image size if the selection (crop) rectangle size or
> +	 * position has been modified.
> +	 */
> +	if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
> +	    !v4l2_rect_equal(&rect, __crop))
> +		__tvp5150_set_selection(sd, rect);
> +
> +	*__crop = rect;
>  
>  	return 0;
>  }
> @@ -1083,11 +1131,9 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
>  				 struct v4l2_subdev_selection *sel)
>  {
>  	struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd);
> +	struct v4l2_rect *__crop;
>  	v4l2_std_id std;
>  
> -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
> -		return -EINVAL;
> -
>  	switch (sel->target) {
>  	case V4L2_SEL_TGT_CROP_BOUNDS:
>  		sel->r.left = 0;
> @@ -1105,7 +1151,11 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
>  			sel->r.height = TVP5150_V_MAX_OTHERS;
>  		return 0;
>  	case V4L2_SEL_TGT_CROP:
> -		sel->r = decoder->rect;
> +		__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad,
> +						sel->which);
> +		if (IS_ERR(__crop))
> +			return PTR_ERR(__crop);
> +		sel->r = *__crop;
>  		return 0;
>  	default:
>  		return -EINVAL;
> 

Regards,

	Hans
Marco Felsch Aug. 19, 2019, 10:40 a.m. UTC | #2
On 19-08-16 13:27, Hans Verkuil wrote:
> On 8/15/19 1:57 PM, Marco Felsch wrote:
> > Since commit 10d5509c8d50 ("[media] v4l2: remove g/s_crop from video ops")
> > the 'which' field for set/get_selection must be FORMAT_ACTIVE. There is
> > no way to try different selections. The patch adds a helper function to
> > select the correct selection memory space (sub-device file handle or
> > driver state) which will be set/returned.
> > 
> > The TVP5150 AVID will be updated if the 'which' field is FORMAT_ACTIVE
> > and the requested selection rectangle differs from the already set one.
> > 
> > Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
> > 
> > ---
> > Changelog:
> > 
> > v7:
> > - __tvp5150_get_pad_crop(): return error on default case
> > - simplify __tvp5150_get_pad_crop() error handling
> > - tvp5150_set_selection() squash __tvp5150_set_selection() execution
> >   conditions
> > v6:
> > nothing
> > v5:
> >  - handle stub for v4l2_subdev_get_try_crop() internal since commit
> >    ("media: v4l2-subdev: add stubs for v4l2_subdev_get_try_*")
> >    isn't anymore part of this series.
> >  - add error handling of __tvp5150_get_pad_crop()
> > v4:
> >  - fix merge conflict due to rebase on top of media-tree/master
> >  - __tvp5150_get_pad_crop(): cosmetic alignment fixes
> > ---
> >  drivers/media/i2c/tvp5150.c | 118 +++++++++++++++++++++++++-----------
> >  1 file changed, 84 insertions(+), 34 deletions(-)
> > 
> > diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
> > index dfbf5bbc307c..ad59e65e6771 100644
> > --- a/drivers/media/i2c/tvp5150.c
> > +++ b/drivers/media/i2c/tvp5150.c
> > @@ -19,6 +19,7 @@
> >  #include <media/v4l2-ctrls.h>
> >  #include <media/v4l2-fwnode.h>
> >  #include <media/v4l2-mc.h>
> > +#include <media/v4l2-rect.h>
> >  
> >  #include "tvp5150_reg.h"
> >  
> > @@ -994,20 +995,44 @@ static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop)
> >  		crop->height = TVP5150_V_MAX_OTHERS;
> >  }
> >  
> > +static struct v4l2_rect *
> > +__tvp5150_get_pad_crop(struct tvp5150 *decoder,
> > +		       struct v4l2_subdev_pad_config *cfg, unsigned int pad,
> > +		       enum v4l2_subdev_format_whence which)
> > +{
> > +	switch (which) {
> > +	case V4L2_SUBDEV_FORMAT_TRY:
> > +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
> > +		return v4l2_subdev_get_try_crop(&decoder->sd, cfg, pad);
> > +#else
> > +		return ERR_PTR(-ENOTTY);
> 
> That should be ERR_PTR(-EINVAL). Just because V4L2_SUBDEV_API is undefined, that
> doesn't mean that the whole functionality is not implemented! Just the TRY
> is not available.

Okay.. The patch was made before you changed that for the other i2c
devices. I will change that.

> 
> > +#endif
> > +	case V4L2_SUBDEV_FORMAT_ACTIVE:
> > +		return &decoder->rect;
> > +	default:
> > +		return ERR_PTR(-EINVAL);
> > +	}
> > +}
> > +
> >  static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
> >  			    struct v4l2_subdev_pad_config *cfg,
> >  			    struct v4l2_subdev_format *format)
> >  {
> >  	struct v4l2_mbus_framefmt *f;
> > +	struct v4l2_rect *__crop;
> >  	struct tvp5150 *decoder = to_tvp5150(sd);
> >  
> >  	if (!format || (format->pad != TVP5150_PAD_VID_OUT))
> >  		return -EINVAL;
> >  
> >  	f = &format->format;
> > +	__crop = __tvp5150_get_pad_crop(decoder, cfg, format->pad,
> > +					format->which);
> > +	if (IS_ERR(__crop))
> > +		return PTR_ERR(__crop);
> >  
> > -	f->width = decoder->rect.width;
> > -	f->height = decoder->rect.height / 2;
> > +	f->width = __crop->width;
> > +	f->height = __crop->height / 2;
> >  
> >  	f->code = TVP5150_MBUS_FMT;
> >  	f->field = TVP5150_FIELD;
> > @@ -1018,17 +1043,51 @@ static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
> >  	return 0;
> >  }
> >  
> > +unsigned int tvp5150_get_hmax(struct v4l2_subdev *sd)
> > +{
> > +	struct tvp5150 *decoder = to_tvp5150(sd);
> > +	v4l2_std_id std;
> > +
> > +	/* Calculate height based on current standard */
> > +	if (decoder->norm == V4L2_STD_ALL)
> > +		std = tvp5150_read_std(sd);
> > +	else
> > +		std = decoder->norm;
> > +
> > +	return (std & V4L2_STD_525_60) ?
> > +		TVP5150_V_MAX_525_60 : TVP5150_V_MAX_OTHERS;
> > +}
> > +
> > +static inline void
> > +__tvp5150_set_selection(struct v4l2_subdev *sd, struct v4l2_rect rect)
> > +{
> > +	struct tvp5150 *decoder = to_tvp5150(sd);
> > +	unsigned int hmax = tvp5150_get_hmax(sd);
> > +
> > +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
> > +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
> > +		     rect.top + rect.height - hmax);
> > +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
> > +		     rect.left >> TVP5150_CROP_SHIFT);
> > +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
> > +		     rect.left | (1 << TVP5150_CROP_SHIFT));
> > +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
> > +		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
> > +		     TVP5150_CROP_SHIFT);
> > +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
> > +		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
> > +}
> > +
> >  static int tvp5150_set_selection(struct v4l2_subdev *sd,
> >  				 struct v4l2_subdev_pad_config *cfg,
> >  				 struct v4l2_subdev_selection *sel)
> >  {
> >  	struct tvp5150 *decoder = to_tvp5150(sd);
> >  	struct v4l2_rect rect = sel->r;
> > -	v4l2_std_id std;
> > -	int hmax;
> > +	struct v4l2_rect *__crop;
> 
> No need for __ prefix.

I dropped the __ prefix for all local crop vars.

> > +	unsigned int hmax;
> >  
> > -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
> > -	    sel->target != V4L2_SEL_TGT_CROP)
> > +	if (sel->target != V4L2_SEL_TGT_CROP)
> >  		return -EINVAL;
> >  
> >  	dev_dbg_lvl(sd->dev, 1, debug, "%s left=%d, top=%d, width=%d, height=%d\n",
> > @@ -1037,17 +1096,7 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
> >  	/* tvp5150 has some special limits */
> >  	rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
> >  	rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
> > -
> > -	/* Calculate height based on current standard */
> > -	if (decoder->norm == V4L2_STD_ALL)
> > -		std = tvp5150_read_std(sd);
> > -	else
> > -		std = decoder->norm;
> > -
> > -	if (std & V4L2_STD_525_60)
> > -		hmax = TVP5150_V_MAX_525_60;
> > -	else
> > -		hmax = TVP5150_V_MAX_OTHERS;
> > +	hmax = tvp5150_get_hmax(sd);
> >  
> >  	/*
> >  	 * alignments:
> > @@ -1060,20 +1109,19 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
> >  			      hmax - TVP5150_MAX_CROP_TOP - rect.top,
> >  			      hmax - rect.top, 0, 0);
> >  
> > -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
> > -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
> > -		     rect.top + rect.height - hmax);
> > -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
> > -		     rect.left >> TVP5150_CROP_SHIFT);
> > -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
> > -		     rect.left | (1 << TVP5150_CROP_SHIFT));
> > -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
> > -		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
> > -		     TVP5150_CROP_SHIFT);
> > -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
> > -		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
> > +	__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);
> 
> If SUBDEV_API is not defined, then just set *__crop = rect and return 0;
> 
> See also the commit log of commit fa564e90257e.

Applies this to the set/get_selection() too?

Regards,
  Marco


> > +	if (IS_ERR(__crop))
> > +		return PTR_ERR(__crop);
> >  
> > -	decoder->rect = rect;
> > +	/*
> > +	 * Update output image size if the selection (crop) rectangle size or
> > +	 * position has been modified.
> > +	 */
> > +	if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
> > +	    !v4l2_rect_equal(&rect, __crop))
> > +		__tvp5150_set_selection(sd, rect);
> > +
> > +	*__crop = rect;
> >  
> >  	return 0;
> >  }
> > @@ -1083,11 +1131,9 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
> >  				 struct v4l2_subdev_selection *sel)
> >  {
> >  	struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd);
> > +	struct v4l2_rect *__crop;
> >  	v4l2_std_id std;
> >  
> > -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
> > -		return -EINVAL;
> > -
> >  	switch (sel->target) {
> >  	case V4L2_SEL_TGT_CROP_BOUNDS:
> >  		sel->r.left = 0;
> > @@ -1105,7 +1151,11 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
> >  			sel->r.height = TVP5150_V_MAX_OTHERS;
> >  		return 0;
> >  	case V4L2_SEL_TGT_CROP:
> > -		sel->r = decoder->rect;
> > +		__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad,
> > +						sel->which);
> > +		if (IS_ERR(__crop))
> > +			return PTR_ERR(__crop);
> > +		sel->r = *__crop;
> >  		return 0;
> >  	default:
> >  		return -EINVAL;
> > 
> 
> Regards,
> 
> 	Hans
>
Hans Verkuil Aug. 19, 2019, 10:41 a.m. UTC | #3
On 8/19/19 12:40 PM, Marco Felsch wrote:
> On 19-08-16 13:27, Hans Verkuil wrote:
>> On 8/15/19 1:57 PM, Marco Felsch wrote:
>>> Since commit 10d5509c8d50 ("[media] v4l2: remove g/s_crop from video ops")
>>> the 'which' field for set/get_selection must be FORMAT_ACTIVE. There is
>>> no way to try different selections. The patch adds a helper function to
>>> select the correct selection memory space (sub-device file handle or
>>> driver state) which will be set/returned.
>>>
>>> The TVP5150 AVID will be updated if the 'which' field is FORMAT_ACTIVE
>>> and the requested selection rectangle differs from the already set one.
>>>
>>> Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
>>>
>>> ---
>>> Changelog:
>>>
>>> v7:
>>> - __tvp5150_get_pad_crop(): return error on default case
>>> - simplify __tvp5150_get_pad_crop() error handling
>>> - tvp5150_set_selection() squash __tvp5150_set_selection() execution
>>>   conditions
>>> v6:
>>> nothing
>>> v5:
>>>  - handle stub for v4l2_subdev_get_try_crop() internal since commit
>>>    ("media: v4l2-subdev: add stubs for v4l2_subdev_get_try_*")
>>>    isn't anymore part of this series.
>>>  - add error handling of __tvp5150_get_pad_crop()
>>> v4:
>>>  - fix merge conflict due to rebase on top of media-tree/master
>>>  - __tvp5150_get_pad_crop(): cosmetic alignment fixes
>>> ---
>>>  drivers/media/i2c/tvp5150.c | 118 +++++++++++++++++++++++++-----------
>>>  1 file changed, 84 insertions(+), 34 deletions(-)
>>>
>>> diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
>>> index dfbf5bbc307c..ad59e65e6771 100644
>>> --- a/drivers/media/i2c/tvp5150.c
>>> +++ b/drivers/media/i2c/tvp5150.c
>>> @@ -19,6 +19,7 @@
>>>  #include <media/v4l2-ctrls.h>
>>>  #include <media/v4l2-fwnode.h>
>>>  #include <media/v4l2-mc.h>
>>> +#include <media/v4l2-rect.h>
>>>  
>>>  #include "tvp5150_reg.h"
>>>  
>>> @@ -994,20 +995,44 @@ static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop)
>>>  		crop->height = TVP5150_V_MAX_OTHERS;
>>>  }
>>>  
>>> +static struct v4l2_rect *
>>> +__tvp5150_get_pad_crop(struct tvp5150 *decoder,
>>> +		       struct v4l2_subdev_pad_config *cfg, unsigned int pad,
>>> +		       enum v4l2_subdev_format_whence which)
>>> +{
>>> +	switch (which) {
>>> +	case V4L2_SUBDEV_FORMAT_TRY:
>>> +#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
>>> +		return v4l2_subdev_get_try_crop(&decoder->sd, cfg, pad);
>>> +#else
>>> +		return ERR_PTR(-ENOTTY);
>>
>> That should be ERR_PTR(-EINVAL). Just because V4L2_SUBDEV_API is undefined, that
>> doesn't mean that the whole functionality is not implemented! Just the TRY
>> is not available.
> 
> Okay.. The patch was made before you changed that for the other i2c
> devices. I will change that.
> 
>>
>>> +#endif
>>> +	case V4L2_SUBDEV_FORMAT_ACTIVE:
>>> +		return &decoder->rect;
>>> +	default:
>>> +		return ERR_PTR(-EINVAL);
>>> +	}
>>> +}
>>> +
>>>  static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
>>>  			    struct v4l2_subdev_pad_config *cfg,
>>>  			    struct v4l2_subdev_format *format)
>>>  {
>>>  	struct v4l2_mbus_framefmt *f;
>>> +	struct v4l2_rect *__crop;
>>>  	struct tvp5150 *decoder = to_tvp5150(sd);
>>>  
>>>  	if (!format || (format->pad != TVP5150_PAD_VID_OUT))
>>>  		return -EINVAL;
>>>  
>>>  	f = &format->format;
>>> +	__crop = __tvp5150_get_pad_crop(decoder, cfg, format->pad,
>>> +					format->which);
>>> +	if (IS_ERR(__crop))
>>> +		return PTR_ERR(__crop);
>>>  
>>> -	f->width = decoder->rect.width;
>>> -	f->height = decoder->rect.height / 2;
>>> +	f->width = __crop->width;
>>> +	f->height = __crop->height / 2;
>>>  
>>>  	f->code = TVP5150_MBUS_FMT;
>>>  	f->field = TVP5150_FIELD;
>>> @@ -1018,17 +1043,51 @@ static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
>>>  	return 0;
>>>  }
>>>  
>>> +unsigned int tvp5150_get_hmax(struct v4l2_subdev *sd)
>>> +{
>>> +	struct tvp5150 *decoder = to_tvp5150(sd);
>>> +	v4l2_std_id std;
>>> +
>>> +	/* Calculate height based on current standard */
>>> +	if (decoder->norm == V4L2_STD_ALL)
>>> +		std = tvp5150_read_std(sd);
>>> +	else
>>> +		std = decoder->norm;
>>> +
>>> +	return (std & V4L2_STD_525_60) ?
>>> +		TVP5150_V_MAX_525_60 : TVP5150_V_MAX_OTHERS;
>>> +}
>>> +
>>> +static inline void
>>> +__tvp5150_set_selection(struct v4l2_subdev *sd, struct v4l2_rect rect)
>>> +{
>>> +	struct tvp5150 *decoder = to_tvp5150(sd);
>>> +	unsigned int hmax = tvp5150_get_hmax(sd);
>>> +
>>> +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
>>> +	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
>>> +		     rect.top + rect.height - hmax);
>>> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
>>> +		     rect.left >> TVP5150_CROP_SHIFT);
>>> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
>>> +		     rect.left | (1 << TVP5150_CROP_SHIFT));
>>> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
>>> +		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
>>> +		     TVP5150_CROP_SHIFT);
>>> +	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
>>> +		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
>>> +}
>>> +
>>>  static int tvp5150_set_selection(struct v4l2_subdev *sd,
>>>  				 struct v4l2_subdev_pad_config *cfg,
>>>  				 struct v4l2_subdev_selection *sel)
>>>  {
>>>  	struct tvp5150 *decoder = to_tvp5150(sd);
>>>  	struct v4l2_rect rect = sel->r;
>>> -	v4l2_std_id std;
>>> -	int hmax;
>>> +	struct v4l2_rect *__crop;
>>
>> No need for __ prefix.
> 
> I dropped the __ prefix for all local crop vars.
> 
>>> +	unsigned int hmax;
>>>  
>>> -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
>>> -	    sel->target != V4L2_SEL_TGT_CROP)
>>> +	if (sel->target != V4L2_SEL_TGT_CROP)
>>>  		return -EINVAL;
>>>  
>>>  	dev_dbg_lvl(sd->dev, 1, debug, "%s left=%d, top=%d, width=%d, height=%d\n",
>>> @@ -1037,17 +1096,7 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
>>>  	/* tvp5150 has some special limits */
>>>  	rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
>>>  	rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
>>> -
>>> -	/* Calculate height based on current standard */
>>> -	if (decoder->norm == V4L2_STD_ALL)
>>> -		std = tvp5150_read_std(sd);
>>> -	else
>>> -		std = decoder->norm;
>>> -
>>> -	if (std & V4L2_STD_525_60)
>>> -		hmax = TVP5150_V_MAX_525_60;
>>> -	else
>>> -		hmax = TVP5150_V_MAX_OTHERS;
>>> +	hmax = tvp5150_get_hmax(sd);
>>>  
>>>  	/*
>>>  	 * alignments:
>>> @@ -1060,20 +1109,19 @@ static int tvp5150_set_selection(struct v4l2_subdev *sd,
>>>  			      hmax - TVP5150_MAX_CROP_TOP - rect.top,
>>>  			      hmax - rect.top, 0, 0);
>>>  
>>> -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
>>> -	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
>>> -		     rect.top + rect.height - hmax);
>>> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
>>> -		     rect.left >> TVP5150_CROP_SHIFT);
>>> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
>>> -		     rect.left | (1 << TVP5150_CROP_SHIFT));
>>> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
>>> -		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
>>> -		     TVP5150_CROP_SHIFT);
>>> -	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
>>> -		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
>>> +	__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);
>>
>> If SUBDEV_API is not defined, then just set *__crop = rect and return 0;
>>
>> See also the commit log of commit fa564e90257e.
> 
> Applies this to the set/get_selection() too?

Yes.

Regards,

	Hans

> 
> Regards,
>   Marco
> 
> 
>>> +	if (IS_ERR(__crop))
>>> +		return PTR_ERR(__crop);
>>>  
>>> -	decoder->rect = rect;
>>> +	/*
>>> +	 * Update output image size if the selection (crop) rectangle size or
>>> +	 * position has been modified.
>>> +	 */
>>> +	if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
>>> +	    !v4l2_rect_equal(&rect, __crop))
>>> +		__tvp5150_set_selection(sd, rect);
>>> +
>>> +	*__crop = rect;
>>>  
>>>  	return 0;
>>>  }
>>> @@ -1083,11 +1131,9 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
>>>  				 struct v4l2_subdev_selection *sel)
>>>  {
>>>  	struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd);
>>> +	struct v4l2_rect *__crop;
>>>  	v4l2_std_id std;
>>>  
>>> -	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
>>> -		return -EINVAL;
>>> -
>>>  	switch (sel->target) {
>>>  	case V4L2_SEL_TGT_CROP_BOUNDS:
>>>  		sel->r.left = 0;
>>> @@ -1105,7 +1151,11 @@ static int tvp5150_get_selection(struct v4l2_subdev *sd,
>>>  			sel->r.height = TVP5150_V_MAX_OTHERS;
>>>  		return 0;
>>>  	case V4L2_SEL_TGT_CROP:
>>> -		sel->r = decoder->rect;
>>> +		__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad,
>>> +						sel->which);
>>> +		if (IS_ERR(__crop))
>>> +			return PTR_ERR(__crop);
>>> +		sel->r = *__crop;
>>>  		return 0;
>>>  	default:
>>>  		return -EINVAL;
>>>
>>
>> Regards,
>>
>> 	Hans
>>
>
diff mbox series

Patch

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index dfbf5bbc307c..ad59e65e6771 100644
--- a/drivers/media/i2c/tvp5150.c
+++ b/drivers/media/i2c/tvp5150.c
@@ -19,6 +19,7 @@ 
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-fwnode.h>
 #include <media/v4l2-mc.h>
+#include <media/v4l2-rect.h>
 
 #include "tvp5150_reg.h"
 
@@ -994,20 +995,44 @@  static void tvp5150_set_default(v4l2_std_id std, struct v4l2_rect *crop)
 		crop->height = TVP5150_V_MAX_OTHERS;
 }
 
+static struct v4l2_rect *
+__tvp5150_get_pad_crop(struct tvp5150 *decoder,
+		       struct v4l2_subdev_pad_config *cfg, unsigned int pad,
+		       enum v4l2_subdev_format_whence which)
+{
+	switch (which) {
+	case V4L2_SUBDEV_FORMAT_TRY:
+#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
+		return v4l2_subdev_get_try_crop(&decoder->sd, cfg, pad);
+#else
+		return ERR_PTR(-ENOTTY);
+#endif
+	case V4L2_SUBDEV_FORMAT_ACTIVE:
+		return &decoder->rect;
+	default:
+		return ERR_PTR(-EINVAL);
+	}
+}
+
 static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
 			    struct v4l2_subdev_pad_config *cfg,
 			    struct v4l2_subdev_format *format)
 {
 	struct v4l2_mbus_framefmt *f;
+	struct v4l2_rect *__crop;
 	struct tvp5150 *decoder = to_tvp5150(sd);
 
 	if (!format || (format->pad != TVP5150_PAD_VID_OUT))
 		return -EINVAL;
 
 	f = &format->format;
+	__crop = __tvp5150_get_pad_crop(decoder, cfg, format->pad,
+					format->which);
+	if (IS_ERR(__crop))
+		return PTR_ERR(__crop);
 
-	f->width = decoder->rect.width;
-	f->height = decoder->rect.height / 2;
+	f->width = __crop->width;
+	f->height = __crop->height / 2;
 
 	f->code = TVP5150_MBUS_FMT;
 	f->field = TVP5150_FIELD;
@@ -1018,17 +1043,51 @@  static int tvp5150_fill_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
+unsigned int tvp5150_get_hmax(struct v4l2_subdev *sd)
+{
+	struct tvp5150 *decoder = to_tvp5150(sd);
+	v4l2_std_id std;
+
+	/* Calculate height based on current standard */
+	if (decoder->norm == V4L2_STD_ALL)
+		std = tvp5150_read_std(sd);
+	else
+		std = decoder->norm;
+
+	return (std & V4L2_STD_525_60) ?
+		TVP5150_V_MAX_525_60 : TVP5150_V_MAX_OTHERS;
+}
+
+static inline void
+__tvp5150_set_selection(struct v4l2_subdev *sd, struct v4l2_rect rect)
+{
+	struct tvp5150 *decoder = to_tvp5150(sd);
+	unsigned int hmax = tvp5150_get_hmax(sd);
+
+	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
+	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
+		     rect.top + rect.height - hmax);
+	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
+		     rect.left >> TVP5150_CROP_SHIFT);
+	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
+		     rect.left | (1 << TVP5150_CROP_SHIFT));
+	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
+		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
+		     TVP5150_CROP_SHIFT);
+	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
+		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
+}
+
 static int tvp5150_set_selection(struct v4l2_subdev *sd,
 				 struct v4l2_subdev_pad_config *cfg,
 				 struct v4l2_subdev_selection *sel)
 {
 	struct tvp5150 *decoder = to_tvp5150(sd);
 	struct v4l2_rect rect = sel->r;
-	v4l2_std_id std;
-	int hmax;
+	struct v4l2_rect *__crop;
+	unsigned int hmax;
 
-	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||
-	    sel->target != V4L2_SEL_TGT_CROP)
+	if (sel->target != V4L2_SEL_TGT_CROP)
 		return -EINVAL;
 
 	dev_dbg_lvl(sd->dev, 1, debug, "%s left=%d, top=%d, width=%d, height=%d\n",
@@ -1037,17 +1096,7 @@  static int tvp5150_set_selection(struct v4l2_subdev *sd,
 	/* tvp5150 has some special limits */
 	rect.left = clamp(rect.left, 0, TVP5150_MAX_CROP_LEFT);
 	rect.top = clamp(rect.top, 0, TVP5150_MAX_CROP_TOP);
-
-	/* Calculate height based on current standard */
-	if (decoder->norm == V4L2_STD_ALL)
-		std = tvp5150_read_std(sd);
-	else
-		std = decoder->norm;
-
-	if (std & V4L2_STD_525_60)
-		hmax = TVP5150_V_MAX_525_60;
-	else
-		hmax = TVP5150_V_MAX_OTHERS;
+	hmax = tvp5150_get_hmax(sd);
 
 	/*
 	 * alignments:
@@ -1060,20 +1109,19 @@  static int tvp5150_set_selection(struct v4l2_subdev *sd,
 			      hmax - TVP5150_MAX_CROP_TOP - rect.top,
 			      hmax - rect.top, 0, 0);
 
-	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_START, rect.top);
-	regmap_write(decoder->regmap, TVP5150_VERT_BLANKING_STOP,
-		     rect.top + rect.height - hmax);
-	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_MSB,
-		     rect.left >> TVP5150_CROP_SHIFT);
-	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_ST_LSB,
-		     rect.left | (1 << TVP5150_CROP_SHIFT));
-	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_MSB,
-		     (rect.left + rect.width - TVP5150_MAX_CROP_LEFT) >>
-		     TVP5150_CROP_SHIFT);
-	regmap_write(decoder->regmap, TVP5150_ACT_VD_CROP_STP_LSB,
-		     rect.left + rect.width - TVP5150_MAX_CROP_LEFT);
+	__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);
+	if (IS_ERR(__crop))
+		return PTR_ERR(__crop);
 
-	decoder->rect = rect;
+	/*
+	 * Update output image size if the selection (crop) rectangle size or
+	 * position has been modified.
+	 */
+	if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE &&
+	    !v4l2_rect_equal(&rect, __crop))
+		__tvp5150_set_selection(sd, rect);
+
+	*__crop = rect;
 
 	return 0;
 }
@@ -1083,11 +1131,9 @@  static int tvp5150_get_selection(struct v4l2_subdev *sd,
 				 struct v4l2_subdev_selection *sel)
 {
 	struct tvp5150 *decoder = container_of(sd, struct tvp5150, sd);
+	struct v4l2_rect *__crop;
 	v4l2_std_id std;
 
-	if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)
-		return -EINVAL;
-
 	switch (sel->target) {
 	case V4L2_SEL_TGT_CROP_BOUNDS:
 		sel->r.left = 0;
@@ -1105,7 +1151,11 @@  static int tvp5150_get_selection(struct v4l2_subdev *sd,
 			sel->r.height = TVP5150_V_MAX_OTHERS;
 		return 0;
 	case V4L2_SEL_TGT_CROP:
-		sel->r = decoder->rect;
+		__crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad,
+						sel->which);
+		if (IS_ERR(__crop))
+			return PTR_ERR(__crop);
+		sel->r = *__crop;
 		return 0;
 	default:
 		return -EINVAL;