Re: [PATCH 27/55] media: rkisp1: isp: Rename rkisp1_device.active_sensor to source

From: Dafna Hirschfeld <dafna@fastmail.com>
To: Paul Elder <paul.elder@ideasonboard.com>
Cc: linux-media@vger.kernel.org,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	heiko@sntech.de, jeanmichel.hautbois@ideasonboard.com,
	jacopo@jmondi.org, djrscally@gmail.com,
	helen.koike@collabora.com, linux-rockchip@lists.infradead.org
Subject: Re: [PATCH 27/55] media: rkisp1: isp: Rename rkisp1_device.active_sensor to source
Date: Fri, 1 Jul 2022 00:57:15 +0300	[thread overview]
Message-ID: <20220630215715.fc7fynqpd36d55hf@guri> (raw)
In-Reply-To: <20220614191127.3420492-28-paul.elder@ideasonboard.com>

On 15.06.2022 04:10, Paul Elder wrote:
>From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
>The active_sensor field of the rkisp1_device structure points to the ASD
>data for the active source. The source may however not be a sensor, so
>the naming is a bit confusing. Furthermore, the driver doesn't need to
>access the full ASD from the active_sensor field, only the subdev
>pointer is needed, when stopping streaming.
>
>Rename the field to source, and turn it into a v4l2_subdev pointer.
>
>Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com>

>---
> .../platform/rockchip/rkisp1/rkisp1-common.h  |  4 +--
> .../platform/rockchip/rkisp1/rkisp1-isp.c     | 27 +++++++++----------
> 2 files changed, 14 insertions(+), 17 deletions(-)
>
>diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
>index dbf1baca623a..7a6f55a31bb0 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
>@@ -419,7 +419,7 @@ struct rkisp1_debug {
>  * @v4l2_dev:	   v4l2_device variable
>  * @media_dev:	   media_device variable
>  * @notifier:	   a notifier to register on the v4l2-async API to be notified on the sensor
>- * @active_sensor: sensor in-use, set when streaming on
>+ * @source:        source subdev in-use, set when starting streaming
>  * @csi:	   internal CSI-2 receiver
>  * @isp:	   ISP sub-device
>  * @resizer_devs:  resizer sub-devices
>@@ -439,7 +439,7 @@ struct rkisp1_device {
> 	struct v4l2_device v4l2_dev;
> 	struct media_device media_dev;
> 	struct v4l2_async_notifier notifier;
>-	struct rkisp1_sensor_async *active_sensor;
>+	struct v4l2_subdev *source;
> 	struct rkisp1_csi csi;
> 	struct rkisp1_isp isp;
> 	struct rkisp1_resizer resizer_devs[2];
>diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
>index f6d1c93dd99d..4f12fc0b7694 100644
>--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
>+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
>@@ -58,7 +58,7 @@
>  * Helpers
>  */
>
>-static struct v4l2_subdev *rkisp1_get_remote_sensor(struct v4l2_subdev *sd)
>+static struct v4l2_subdev *rkisp1_get_remote_source(struct v4l2_subdev *sd)
> {
> 	struct media_pad *local, *remote;
> 	struct media_entity *sensor_me;
>@@ -749,12 +749,11 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
> 	struct rkisp1_device *rkisp1 =
> 		container_of(sd->v4l2_dev, struct rkisp1_device, v4l2_dev);
> 	struct rkisp1_isp *isp = &rkisp1->isp;
>-	struct v4l2_subdev *sensor_sd;
>+	struct rkisp1_sensor_async *asd;
> 	int ret;
>
> 	if (!enable) {
>-		v4l2_subdev_call(rkisp1->active_sensor->sd, video, s_stream,
>-				 false);
>+		v4l2_subdev_call(rkisp1->source, video, s_stream, false);
>
> 		rkisp1_csi_stop(&rkisp1->csi);
> 		rkisp1_isp_stop(rkisp1);
>@@ -762,35 +761,33 @@ static int rkisp1_isp_s_stream(struct v4l2_subdev *sd, int enable)
> 		return 0;
> 	}
>
>-	sensor_sd = rkisp1_get_remote_sensor(sd);
>-	if (!sensor_sd) {
>-		dev_warn(rkisp1->dev, "No link between isp and sensor\n");
>+	rkisp1->source = rkisp1_get_remote_source(sd);
>+	if (!rkisp1->source) {
>+		dev_warn(rkisp1->dev, "No link between isp and source\n");
> 		return -ENODEV;
> 	}
>
>-	rkisp1->active_sensor = container_of(sensor_sd->asd,
>-					     struct rkisp1_sensor_async, asd);
>+	asd = container_of(rkisp1->source->asd, struct rkisp1_sensor_async,
>+			   asd);
>
>-	if (rkisp1->active_sensor->mbus_type != V4L2_MBUS_CSI2_DPHY)
>+	if (asd->mbus_type != V4L2_MBUS_CSI2_DPHY)
> 		return -EINVAL;
>
> 	rkisp1->isp.frame_sequence = -1;
> 	mutex_lock(&isp->ops_lock);
>-	ret = rkisp1_config_cif(rkisp1, rkisp1->active_sensor->mbus_type,
>-				rkisp1->active_sensor->mbus_flags);
>+	ret = rkisp1_config_cif(rkisp1, asd->mbus_type, asd->mbus_flags);
> 	if (ret)
> 		goto mutex_unlock;
>
> 	rkisp1_isp_start(rkisp1);
>
>-	ret = rkisp1_csi_start(&rkisp1->csi, rkisp1->active_sensor);
>+	ret = rkisp1_csi_start(&rkisp1->csi, asd);
> 	if (ret) {
> 		rkisp1_isp_stop(rkisp1);
> 		goto mutex_unlock;
> 	}
>
>-	ret = v4l2_subdev_call(rkisp1->active_sensor->sd, video, s_stream,
>-			       true);
>+	ret = v4l2_subdev_call(rkisp1->source, video, s_stream, true);
> 	if (ret) {
> 		rkisp1_isp_stop(rkisp1);
> 		rkisp1_csi_stop(&rkisp1->csi);
>-- 
>2.30.2
>