[PATCH v9 15/20] sh-mobile-ceu-driver: support max width and height in DT

[Guennadi Liakhovetski]

Some CEU implementations have non-standard (larger) maximum supported
width and height values. Add two OF properties to specify them.

Signed-off-by: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
---
 .../devicetree/bindings/media/sh_mobile_ceu.txt    |   18 +++++++++++++++
 .../platform/soc_camera/sh_mobile_ceu_camera.c     |   23 ++++++++++++++++++-
 2 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/sh_mobile_ceu.txt

diff --git a/Documentation/devicetree/bindings/media/sh_mobile_ceu.txt 
b/Documentation/devicetree/bindings/media/sh_mobile_ceu.txt
new file mode 100644
index 0000000..1ce4e46
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/sh_mobile_ceu.txt
@@ -0,0 +1,18 @@
+Bindings, specific for the sh_mobile_ceu_camera.c driver:
+ - compatible: Should be "renesas,sh-mobile-ceu"
+ - reg: register base and size
+ - interrupts: the interrupt number
+ - interrupt-parent: the interrupt controller
+ - renesas,max-width: maximum image width, supported on this SoC
+ - renesas,max-height: maximum image height, supported on this SoC
+
+Example:
+
+ceu0: ceu@0xfe910000 {
+       compatible = "renesas,sh-mobile-ceu";
+       reg = <0xfe910000 0xa0>;
+       interrupt-parent = <&intcs>;
+       interrupts = <0x880>;
+       renesas,max-width = <8188>;
+       renesas,max-height = <8188>;
+};
diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c 
b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
index fcc13d8..b0f0995 100644
--- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
+++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c
@@ -2116,11 +2116,30 @@ static int sh_mobile_ceu_probe(struct platform_device 
*pdev)
 
        /* TODO: implement per-device bus flags */
        if (pcdev->pdata) {
-               pcdev->max_width = pcdev->pdata->max_width ? : 2560;
-               pcdev->max_height = pcdev->pdata->max_height ? : 1920;
+               pcdev->max_width = pcdev->pdata->max_width;
+               pcdev->max_height = pcdev->pdata->max_height;
                pcdev->flags = pcdev->pdata->flags;
        }
 
+       if (!pcdev->max_width) {
+               unsigned int v;
+               err = of_property_read_u32(pdev->dev.of_node, 
"renesas,max-width", &v);
+               if (!err)
+                       pcdev->max_width = v;
+
+               if (!pcdev->max_width)
+                       pcdev->max_width = 2560;
+       }
+       if (!pcdev->max_height) {
+               unsigned int v;
+               err = of_property_read_u32(pdev->dev.of_node, 
"renesas,max-height", &v);
+               if (!err)
+                       pcdev->max_height = v;
+
+               if (!pcdev->max_height)
+                       pcdev->max_height = 1920;
+       }
+
        base = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(base))
                return PTR_ERR(base);
-- 
1.7.2.5

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