On Fri, 2018-05-18 at 10:27 +0100, Rui Miguel Silva wrote:
> This add the media entity subdevice and control driver for the i.MX7
> CMOS Sensor Interface.
>
> Signed-off-by: Rui Miguel Silva <rui.si...@linaro.org>
> ---
[...]
> +static int imx7_csi_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *node = dev->of_node;
> + struct imx7_csi *csi;
> + struct resource *res;
> + int ret;
> +
> + csi = devm_kzalloc(&pdev->dev, sizeof(*csi), GFP_KERNEL);
> + if (!csi)
> + return -ENOMEM;
> +
> + platform_set_drvdata(pdev, &csi->sd);
> + csi->dev = dev;
> +
> + ret = imx7_csi_parse_dt(csi);
> + if (ret < 0)
> + return -ENODEV;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + csi->irq = platform_get_irq(pdev, 0);
> + if (!res || csi->irq < 0) {
> + dev_err(dev, "Missing platform resources data\n");
> + return -ENODEV;
> + }
> +
> + csi->regbase = devm_ioremap_resource(dev, res);
> + if (IS_ERR(csi->regbase)) {
> + dev_err(dev, "Failed platform resources map\n");
> + return -ENODEV;
> + }
> +
> + spin_lock_init(&csi->irqlock);
> + mutex_init(&csi->lock);
> +
> + /* install interrupt handler */
> + ret = devm_request_irq(dev, csi->irq, imx7_csi_irq_handler, 0, "csi",
> + (void *)csi);
> + if (ret < 0) {
> + dev_err(dev, "Request CSI IRQ failed.\n");
> + return -ENODEV;
> + }
> +
> + /* add media device */
> + csi->imxmd = imx_media_dev_init(dev, false);
> + if (IS_ERR(csi->imxmd))
> + return PTR_ERR(csi->imxmd);
> +
> + ret = imx_media_of_add_csi(csi->imxmd, node);
> + if (ret < 0)
> + goto media_cleanup;
> +
> + ret = imx_media_dev_notifier_register(csi->imxmd);
> + if (ret < 0)
> + goto media_cleanup;
> +
> + v4l2_subdev_init(&csi->sd, &imx7_csi_subdev_ops);
> + v4l2_set_subdevdata(&csi->sd, csi);
> + csi->sd.internal_ops = &imx7_csi_internal_ops;
> + csi->sd.entity.ops = &imx7_csi_entity_ops;
> + csi->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
> + csi->sd.dev = &pdev->dev;
> + csi->sd.owner = THIS_MODULE;
> + csi->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
> + csi->sd.grp_id = IMX_MEDIA_GRP_ID_CSI0;
See my comments on the first patch. Since grp_id specifies an IPU CSI0,
it would be better to use a different id here to make clear this is a
standalone CSI as opposed to an IPU CSI.
regards
Philipp
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