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[73.202.231.77]) by smtp.googlemail.com with ESMTPSA id 30sm31296349pjk.17.2019.08.05.16.35.32 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 05 Aug 2019 16:35:33 -0700 (PDT) From: Steve Longerbeam To: linux-media@vger.kernel.org Subject: [PATCH 16/22] media: imx: csi: Implement get_fwnode_pad Date: Mon, 5 Aug 2019 16:34:59 -0700 Message-Id: <20190805233505.21167-17-slongerbeam@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190805233505.21167-1-slongerbeam@gmail.com> References: <20190805233505.21167-1-slongerbeam@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190805_163534_651064_E63AA8C1 X-CRM114-Status: GOOD ( 12.34 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "open list:STAGING SUBSYSTEM" , Fabio Estevam , Pengutronix Kernel Team , Greg Kroah-Hartman , Sascha Hauer , open list , NXP Linux Team , Philipp Zabel , Steve Longerbeam , Mauro Carvalho Chehab , Shawn Guo , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The CSI does not have a 1:1 relationship between fwnode port numbers and pad indexes. In fact the CSI fwnode device is itself a port which is the sink, containing only a single fwnode endpoint. Implement media_entity operation get_fwnode_pad to first verify the given endpoint is the CSI's sink endpoint, and if so return the CSI sink pad index. Signed-off-by: Steve Longerbeam --- drivers/staging/media/imx/imx-media-csi.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c index 367e39f5b382..e193f66fa230 100644 --- a/drivers/staging/media/imx/imx-media-csi.c +++ b/drivers/staging/media/imx/imx-media-csi.c @@ -1824,9 +1824,32 @@ static void csi_unregistered(struct v4l2_subdev *sd) ipu_csi_put(priv->csi); } +/* + * The CSI has only one fwnode endpoint, at the sink pad. Verify the + * endpoint belongs to us, and return CSI_SINK_PAD. + */ +static int csi_get_fwnode_pad(struct media_entity *entity, + struct fwnode_endpoint *endpoint) +{ + struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); + struct csi_priv *priv = v4l2_get_subdevdata(sd); + struct fwnode_handle *csi_port = dev_fwnode(priv->dev); + struct fwnode_handle *csi_ep; + int ret; + + csi_ep = fwnode_get_next_child_node(csi_port, NULL); + + ret = endpoint->local_fwnode == csi_ep ? CSI_SINK_PAD : -ENXIO; + + fwnode_handle_put(csi_ep); + + return ret; +} + static const struct media_entity_operations csi_entity_ops = { .link_setup = csi_link_setup, .link_validate = v4l2_subdev_link_validate, + .get_fwnode_pad = csi_get_fwnode_pad, }; static const struct v4l2_subdev_core_ops csi_core_ops = { -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel