All of lore.kernel.org
 help / color / mirror / Atom feed
From: Marco Felsch <m.felsch@pengutronix.de>
To: mchehab@kernel.org, sakari.ailus@linux.intel.com,
	hans.verkuil@cisco.com, jacopo+renesas@jmondi.org,
	robh+dt@kernel.org, laurent.pinchart@ideasonboard.com
Cc: devicetree@vger.kernel.org, kernel@pengutronix.de,
	linux-media@vger.kernel.org
Subject: [PATCH v8 07/13] media: tvp5150: add FORMAT_TRY support for get/set selection handlers
Date: Wed, 21 Aug 2019 09:30:57 +0200	[thread overview]
Message-ID: <20190821073103.19634-8-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20190821073103.19634-1-m.felsch@pengutronix.de>

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 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: Marco Felsch <m.felsch@pengutronix.de>
---
Changelog:

v8:
- adapt commit message
- remove wrong FORMAT_TRY handling for tvp5150_fill_fmt() handling
- return 0 during set_selection if FORMAT_TRY was requested and
  CONFIG_VIDEO_V4L2_SUBDEV_API is disabled
- return -EINVAL during get_selection if FORMAT_TRY was requested and
  CONFIG_VIDEO_V4L2_SUBDEV_API is disabled
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 | 111 +++++++++++++++++++++++++-----------
 1 file changed, 79 insertions(+), 32 deletions(-)

diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
index 477a929d4f89..62a1c7c3a7c0 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"
 
@@ -995,6 +996,23 @@ 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);
+#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)
@@ -1019,36 +1037,68 @@ 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",
 		__func__, rect.left, rect.top, rect.width, rect.height);
 
+	/*
+	 * Do not apply the request in case of FORMAT_TRY and disabled
+	 * CONFIG_VIDEO_V4L2_SUBDEV_API support.
+	 */
+	crop = __tvp5150_get_pad_crop(decoder, cfg, sel->pad, sel->which);
+	if (IS_ERR(crop))
+		return 0;
+
 	/* 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 +1111,15 @@ 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);
+	/*
+	 * 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);
 
-	decoder->rect = rect;
+	*crop = rect;
 
 	return 0;
 }
@@ -1084,11 +1129,9 @@ 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 +1149,11 @@ 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;
-- 
2.20.1

  parent reply	other threads:[~2019-08-21  7:30 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-21  7:30 [PATCH v8 00/13] Add TVP5150 features Marco Felsch
2019-08-21  7:30 ` [PATCH v8 01/13] dt-bindings: connector: analog: add sdtv standards property Marco Felsch
2019-08-21  7:30 ` [PATCH v8 02/13] media: v4l2-fwnode: add v4l2_fwnode_connector Marco Felsch
2019-08-21  7:30 ` [PATCH v8 03/13] media: v4l2-fwnode: add initial connector parsing support Marco Felsch
2019-08-21  7:30 ` [PATCH v8 04/13] partial revert of "[media] tvp5150: add HW input connectors support" Marco Felsch
2019-08-21  7:30 ` [PATCH v8 05/13] media: tvp5150: add input source selection of_graph support Marco Felsch
2019-08-21  7:30 ` [PATCH v8 06/13] media: dt-bindings: tvp5150: Add input port connectors DT bindings Marco Felsch
2019-08-21  7:30 ` Marco Felsch [this message]
2019-08-21  7:30 ` [PATCH v8 08/13] media: tvp5150: initialize subdev before parsing device tree Marco Felsch
2019-08-21  7:30 ` [PATCH v8 09/13] media: tvp5150: add s_power callback Marco Felsch
2019-08-21  7:31 ` [PATCH v8 10/13] media: dt-bindings: tvp5150: cleanup bindings stlye Marco Felsch
2019-08-21  7:31 ` [PATCH v8 11/13] media: dt-bindings: tvp5150: add optional sdtv standards documentation Marco Felsch
2019-08-21  7:31 ` [PATCH v8 12/13] media: tvp5150: add support to limit sdtv standards Marco Felsch
2019-08-21  7:31 ` [PATCH v8 13/13] media: tvp5150: make debug output more readable Marco Felsch

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190821073103.19634-8-m.felsch@pengutronix.de \
    --to=m.felsch@pengutronix.de \
    --cc=devicetree@vger.kernel.org \
    --cc=hans.verkuil@cisco.com \
    --cc=jacopo+renesas@jmondi.org \
    --cc=kernel@pengutronix.de \
    --cc=laurent.pinchart@ideasonboard.com \
    --cc=linux-media@vger.kernel.org \
    --cc=mchehab@kernel.org \
    --cc=robh+dt@kernel.org \
    --cc=sakari.ailus@linux.intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.