Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Pratyush Yadav <p.yadav@ti.com>
To:     Mauro Carvalho Chehab <mchehab@kernel.org>
CC:     Pratyush Yadav <p.yadav@ti.com>,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Nikhil Devshatwar <nikhil.nd@ti.com>,
        Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>,
        Benoit Parrot <bparrot@ti.com>,
        Maxime Ripard <mripard@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Sakari Ailus <sakari.ailus@linux.intel.com>,
        =?UTF-8?q?Niklas=20S=C3=B6derlund?= 
        <niklas.soderlund+renesas@ragnatech.se>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-media@vger.kernel.org>
Subject: [PATCH v6 09/14] media: cadence: csi2rx: Add link validation
Date:   Fri, 21 Jan 2022 19:58:59 +0530
Message-ID: <20220121142904.4091481-10-p.yadav@ti.com>
In-Reply-To: <20220121142904.4091481-1-p.yadav@ti.com>
References: <20220121142904.4091481-1-p.yadav@ti.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk

Add media link validation to make sure incorrectly configured pipelines
are caught.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

---

Changes in v6:
- Drop transcoding from the commit message.
- Make csi2rx_media_ops const.
- Add Laurent's R-by.

Changes in v5:
- New in v5.

 drivers/media/platform/cadence/cdns-csi2rx.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 28fb2078d10d..08866bc64c33 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -479,6 +479,10 @@ static const struct v4l2_subdev_ops csi2rx_subdev_ops = {
 	.pad		= &csi2rx_pad_ops,
 };
 
+static const struct media_entity_operations csi2rx_media_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
 static int csi2rx_async_bound(struct v4l2_async_notifier *notifier,
 			      struct v4l2_subdev *s_subdev,
 			      struct v4l2_async_subdev *asd)
@@ -678,6 +682,7 @@ static int csi2rx_probe(struct platform_device *pdev)
 	for (i = CSI2RX_PAD_SOURCE_STREAM0; i < CSI2RX_PAD_MAX; i++)
 		csi2rx->pads[i].flags = MEDIA_PAD_FL_SOURCE;
 	csi2rx->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	csi2rx->subdev.entity.ops = &csi2rx_media_ops;
 
 	ret = media_entity_pads_init(&csi2rx->subdev.entity, CSI2RX_PAD_MAX,
 				     csi2rx->pads);
-- 
2.34.1