From: Niklas Söderlund Date: Wed, 23 Apr 2025 16:31:13 +0000 (+0200) Subject: media: rcar-isp: Parse named cs memory region X-Git-Tag: v6.16-rc1~145^2~101 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09d76b4e83e4911238f74a2ba48d92db6e04f10a;p=thirdparty%2Flinux.git media: rcar-isp: Parse named cs memory region Extend the device tree parsing to optionally parse the cs memory region by name. The change is backward compatible with the device tree model where a single unnamed region describes only the ISP channel select function. Signed-off-by: Niklas Söderlund Reviewed-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Link: https://lore.kernel.org/r/20250423163113.2961049-8-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/platform/renesas/rcar-isp/csisp.c b/drivers/media/platform/renesas/rcar-isp/csisp.c index f36d43c2e0a28..1eb29a0b774a9 100644 --- a/drivers/media/platform/renesas/rcar-isp/csisp.c +++ b/drivers/media/platform/renesas/rcar-isp/csisp.c @@ -465,7 +465,18 @@ static const struct media_entity_operations risp_entity_ops = { static int risp_probe_resources(struct rcar_isp *isp, struct platform_device *pdev) { - isp->csbase = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); + struct resource *res; + + /* + * For backward compatibility allow cs base to be the only reg if no + * reg-names are set in DT. + */ + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cs"); + if (!res) + isp->csbase = devm_platform_ioremap_resource(pdev, 0); + else + isp->csbase = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(isp->csbase)) return PTR_ERR(isp->csbase);