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[73.202.231.77]) by smtp.googlemail.com with ESMTPSA id 30sm31296349pjk.17.2019.08.05.16.35.31 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 05 Aug 2019 16:35:32 -0700 (PDT) From: Steve Longerbeam To: linux-media@vger.kernel.org Cc: Steve Longerbeam , Rui Miguel Silva , Philipp Zabel , Mauro Carvalho Chehab , Greg Kroah-Hartman , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devel@driverdev.osuosl.org (open list:STAGING SUBSYSTEM), linux-arm-kernel@lists.infradead.org (moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH 15/22] media: imx7-media-csi: Create media links in bound notifier Date: Mon, 5 Aug 2019 16:34:58 -0700 Message-Id: <20190805233505.21167-16-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> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Implement a notifier bound op to register media links from the remote sub-device's source pad(s) to the CSI sink pad. Signed-off-by: Steve Longerbeam --- drivers/staging/media/imx/imx7-media-csi.c | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c index a1c96c52a606..f71ac485f780 100644 --- a/drivers/staging/media/imx/imx7-media-csi.c +++ b/drivers/staging/media/imx/imx7-media-csi.c @@ -196,6 +196,11 @@ struct imx7_csi { struct completion last_eof_completion; }; +static inline struct imx7_csi *notifier_to_dev(struct v4l2_async_notifier *n) +{ + return container_of(n, struct imx7_csi, notifier); +} + static u32 imx7_csi_reg_read(struct imx7_csi *csi, unsigned int offset) { return readl(csi->regbase + offset); @@ -1173,6 +1178,23 @@ static int imx7_csi_parse_endpoint(struct device *dev, return fwnode_device_is_available(asd->match.fwnode) ? 0 : -EINVAL; } +static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) +{ + struct imx7_csi *csi = notifier_to_dev(notifier); + struct media_pad *sink = &csi->sd.entity.pads[IMX7_CSI_PAD_SINK]; + + return media_create_fwnode_pad_links(sink, + dev_fwnode(csi->sd.dev), + &sd->entity, + dev_fwnode(sd->dev), 0); +} + +static const struct v4l2_async_notifier_operations imx7_csi_notify_ops = { + .bound = imx7_csi_notify_bound, +}; + static int imx7_csi_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -1253,6 +1275,8 @@ static int imx7_csi_probe(struct platform_device *pdev) v4l2_async_notifier_init(&csi->notifier); + csi->notifier.ops = &imx7_csi_notify_ops; + ret = v4l2_async_register_fwnode_subdev(&csi->sd, &csi->notifier, sizeof(struct v4l2_async_subdev), NULL, 0, -- 2.17.1