[media] v4l: vsp1: Support VSP1 instances without any UDS

Not all VSP1 instances include a UDS. Make the renesas,#uds DT property
optional and accept a number of UDS equal to 0 as valid.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/Documentation/devicetree/bindings/media/renesas,vsp1.txt b/Documentation/devicetree/bindings/media/renesas,vsp1.txt
index 87fe08abf36df3a82721862a76cb204139cc4089..674c8c30d046d83e557ec652fd7ac66ff646989c 100644 (file)
--- a/Documentation/devicetree/bindings/media/renesas,vsp1.txt
+++ b/Documentation/devicetree/bindings/media/renesas,vsp1.txt
@@ -13,12 +13,13 @@ Required properties:
   - clocks: A phandle + clock-specifier pair for the VSP1 functional clock.
 
   - renesas,#rpf: Number of Read Pixel Formatter (RPF) modules in the VSP1.
-  - renesas,#uds: Number of Up Down Scaler (UDS) modules in the VSP1.
   - renesas,#wpf: Number of Write Pixel Formatter (WPF) modules in the VSP1.
 
 
 Optional properties:
 
+  - renesas,#uds: Number of Up Down Scaler (UDS) modules in the VSP1. Defaults
+    to 0 if not present.
   - renesas,has-lif: Boolean, indicates that the LCD Interface (LIF) module is
     available.
   - renesas,has-lut: Boolean, indicates that the Look Up Table (LUT) module is

diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index 8a7b111530732f70968393a5b16ecdf48a1681c6..773c9f0b09714a9b1ca79beb120c8d774a5945d6 100644 (file)
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -511,7 +511,7 @@ static int vsp1_parse_dt(struct vsp1_device *vsp1)
                return -EINVAL;
        }
 
-       if (pdata->uds_count <= 0 || pdata->uds_count > VSP1_MAX_UDS) {
+       if (pdata->uds_count > VSP1_MAX_UDS) {
                dev_err(vsp1->dev, "invalid number of UDS (%u)\n",
                        pdata->uds_count);
                return -EINVAL;