Commit 46fe6e7d authored by Marco Felsch's avatar Marco Felsch Committed by Mauro Carvalho Chehab
Browse files

media: tvp5150: add FORMAT_TRY support for get/set selection handlers 



Since commit 10d5509c ("[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 selection rectangle is updated if the format is FORMAT_ACTIVE and
the rectangle position and/or size differs from the current set
rectangle.

Signed-off-by: default avatarMarco Felsch <m.felsch@pengutronix.de>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent b4125e5b

drivers/media/i2c/tvp5150.c

+81 −32
Original line number Diff line number Diff line
@@ -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"
@@ -995,6 +996,25 @@ 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_ACTIVE:

		return &decoder->rect;

	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(-EINVAL);

#endif

	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)
@@ -1019,17 +1039,51 @@ static int tvp5150_fill_fmt(struct v4l2_subdev *sd, 
	return 0;

}



static 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 void tvp5150_set_hw_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",
@@ -1038,17 +1092,7 @@ 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:
@@ -1061,20 +1105,23 @@ 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);

	if (!IS_ENABLED(CONFIG_VIDEO_V4L2_SUBDEV_API) &&

	    sel->which == V4L2_SUBDEV_FORMAT_TRY)

		return 0;



	crop = tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);

	if (IS_ERR(crop))

		return PTR_ERR(crop);



	/*

	 * 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_hw_selection(sd, rect);



	decoder->rect = *rect;

	*crop = *rect;



	return 0;

}
@@ -1084,11 +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;
@@ -1106,7 +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;

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