[PATCH v2.1 5/5] omap3isp: Quit using struct v4l2_subdev.host_priv field

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struct v4l2_subdev.host_priv is intended to be used by another driver. This
is hardly good design but back in the days of platform data was a quick
hack to get things done.

As the sub-device specific bus information can be stored to the ISP driver
specific struct allocated along with v4l2_async_subdev, keep the
information there and only there.

Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
This patch replaces patch "omap3isp: Correctly configure routing in PHY
release".

 drivers/media/platform/omap3isp/isp.c       | 31 +++++++++--------------------
 drivers/media/platform/omap3isp/ispccdc.c   | 20 ++++++++++++-------
 drivers/media/platform/omap3isp/ispccp2.c   |  4 +++-
 drivers/media/platform/omap3isp/ispcsi2.c   |  3 ++-
 drivers/media/platform/omap3isp/ispcsiphy.c | 11 +++++-----
 5 files changed, 33 insertions(+), 36 deletions(-)

diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c
index 6cb1f0495804..27c577fac8e9 100644
--- a/drivers/media/platform/omap3isp/isp.c
+++ b/drivers/media/platform/omap3isp/isp.c
@@ -2188,26 +2188,12 @@ static int isp_fwnodes_parse(struct device *dev,
 	return -EINVAL;
 }
 
-static int isp_subdev_notifier_bound(struct v4l2_async_notifier *async,
-				     struct v4l2_subdev *subdev,
-				     struct v4l2_async_subdev *asd)
-{
-	struct isp_async_subdev *isd =
-		container_of(asd, struct isp_async_subdev, asd);
-
-	isd->sd = subdev;
-	isd->sd->host_priv = &isd->bus;
-
-	return 0;
-}
-
 static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async)
 {
 	struct isp_device *isp = container_of(async, struct isp_device,
 					      notifier);
 	struct v4l2_device *v4l2_dev = &isp->v4l2_dev;
 	struct v4l2_subdev *sd;
-	struct isp_bus_cfg *bus;
 	int ret;
 
 	ret = media_entity_enum_init(&isp->crashed, &isp->media_dev);
@@ -2215,13 +2201,15 @@ static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async)
 		return ret;
 
 	list_for_each_entry(sd, &v4l2_dev->subdevs, list) {
-		/* Only try to link entities whose interface was set on bound */
-		if (sd->host_priv) {
-			bus = (struct isp_bus_cfg *)sd->host_priv;
-			ret = isp_link_entity(isp, &sd->entity, bus->interface);
-			if (ret < 0)
-				return ret;
-		}
+		struct isp_async_subdev *isd;
+
+		if (!sd->asd)
+			continue;
+
+		isd = container_of(sd->asd, struct isp_async_subdev, asd);
+		ret = isp_link_entity(isp, &sd->entity, isd->bus.interface);
+		if (ret < 0)
+			return ret;
 	}
 
 	ret = v4l2_device_register_subdev_nodes(&isp->v4l2_dev);
@@ -2399,7 +2387,6 @@ static int isp_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto error_register_entities;
 
-	isp->notifier.bound = isp_subdev_notifier_bound;
 	isp->notifier.complete = isp_subdev_notifier_complete;
 
 	ret = v4l2_async_notifier_register(&isp->v4l2_dev, &isp->notifier);
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 4947876cfadf..0145b3dcd7a7 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -1139,8 +1139,12 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
 	pad = media_entity_remote_pad(&ccdc->pads[CCDC_PAD_SINK]);
 	sensor = media_entity_to_v4l2_subdev(pad->entity);
 	if (ccdc->input == CCDC_INPUT_PARALLEL) {
-		parcfg = &((struct isp_bus_cfg *)sensor->host_priv)
-			->bus.parallel;
+		struct isp_pipeline *pipe =
+			to_isp_pipeline(&ccdc->subdev.entity);
+
+		parcfg = &container_of(pipe->external->asd,
+				       struct isp_async_subdev,
+				       asd)->bus.bus.parallel;
 		ccdc->bt656 = parcfg->bt656;
 	}
 
@@ -2412,11 +2416,13 @@ static int ccdc_link_validate(struct v4l2_subdev *sd,
 
 	/* We've got a parallel sensor here. */
 	if (ccdc->input == CCDC_INPUT_PARALLEL) {
-		struct isp_parallel_cfg *parcfg =
-			&((struct isp_bus_cfg *)
-			  media_entity_to_v4l2_subdev(link->source->entity)
-			  ->host_priv)->bus.parallel;
-		parallel_shift = parcfg->data_lane_shift;
+		struct isp_pipeline *pipe =
+			to_isp_pipeline(&ccdc->subdev.entity);
+
+		parallel_shift =
+			container_of(pipe->external->asd,
+				     struct isp_async_subdev,
+				     asd)->bus.bus.parallel.data_lane_shift;
 	} else {
 		parallel_shift = 0;
 	}
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index 3db8df09cd9a..8561c4e4c5ac 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -350,6 +350,7 @@ static void ccp2_lcx_config(struct isp_ccp2_device *ccp2,
  */
 static int ccp2_if_configure(struct isp_ccp2_device *ccp2)
 {
+	struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
 	const struct isp_bus_cfg *buscfg;
 	struct v4l2_mbus_framefmt *format;
 	struct media_pad *pad;
@@ -361,7 +362,8 @@ static int ccp2_if_configure(struct isp_ccp2_device *ccp2)
 
 	pad = media_entity_remote_pad(&ccp2->pads[CCP2_PAD_SINK]);
 	sensor = media_entity_to_v4l2_subdev(pad->entity);
-	buscfg = sensor->host_priv;
+	buscfg = &container_of(pipe->external->asd,
+			       struct isp_async_subdev, asd)->bus;
 
 	ret = ccp2_phyif_config(ccp2, &buscfg->bus.ccp2);
 	if (ret < 0)
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index 3ec37fed710b..2802f70fc8b3 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -566,7 +566,8 @@ static int csi2_configure(struct isp_csi2_device *csi2)
 
 	pad = media_entity_remote_pad(&csi2->pads[CSI2_PAD_SINK]);
 	sensor = media_entity_to_v4l2_subdev(pad->entity);
-	buscfg = sensor->host_priv;
+	buscfg = &container_of(pipe->external->asd,
+			       struct isp_async_subdev, asd)->bus;
 
 	csi2->frame_skip = 0;
 	v4l2_subdev_call(sensor, sensor, g_skip_frames, &csi2->frame_skip);
diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c
index ed1eb9907ae0..ef79bf37c2dd 100644
--- a/drivers/media/platform/omap3isp/ispcsiphy.c
+++ b/drivers/media/platform/omap3isp/ispcsiphy.c
@@ -165,10 +165,9 @@ static int csiphy_set_power(struct isp_csiphy *phy, u32 power)
 static int omap3isp_csiphy_config(struct isp_csiphy *phy)
 {
 	struct isp_pipeline *pipe = to_isp_pipeline(phy->entity);
-	struct isp_async_subdev *isd =
-		container_of(pipe->external->asd, struct isp_async_subdev, asd);
-	struct isp_bus_cfg *buscfg = pipe->external->host_priv ?
-		pipe->external->host_priv : &isd->bus;
+	struct isp_bus_cfg *buscfg =
+		&container_of(pipe->external->asd,
+			      struct isp_async_subdev, asd)->bus;
 	struct isp_csiphy_lanes_cfg *lanes;
 	int csi2_ddrclk_khz;
 	unsigned int num_data_lanes, used_lanes = 0;
@@ -311,7 +310,9 @@ void omap3isp_csiphy_release(struct isp_csiphy *phy)
 	mutex_lock(&phy->mutex);
 	if (phy->entity) {
 		struct isp_pipeline *pipe = to_isp_pipeline(phy->entity);
-		struct isp_bus_cfg *buscfg = pipe->external->host_priv;
+		struct isp_bus_cfg *buscfg =
+			&container_of(pipe->external->asd,
+				      struct isp_async_subdev, asd)->bus;
 
 		csiphy_routing_cfg(phy, buscfg->interface, false,
 				   buscfg->bus.ccp2.phy_layer);
-- 
2.11.0




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