diff mbox series

[7/7] media: rcar-isp: Parse named cs memory region

Message ID 20250315152708.328036-8-niklas.soderlund+renesas@ragnatech.se (mailing list archive)
State New
Headers show
Series rcar-isp: Prepare for ISP core support | expand

Commit Message

Niklas Söderlund March 15, 2025, 3:27 p.m. UTC 
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 describing only the ISP channel select
function.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
 drivers/media/platform/renesas/rcar-isp/csisp.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/media/platform/renesas/rcar-isp/csisp.c b/drivers/media/platform/renesas/rcar-isp/csisp.c
index a86d2a9a4915..931c8e3a22be 100644
--- a/drivers/media/platform/renesas/rcar-isp/csisp.c
+++ b/drivers/media/platform/renesas/rcar-isp/csisp.c
@@ -419,7 +419,17 @@  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_get_and_ioremap_resource(pdev, 0, NULL);
+	else
+		isp->csbase = devm_ioremap_resource(&pdev->dev, res);
+
 	if (IS_ERR(isp->csbase))
 		return PTR_ERR(isp->csbase);