media: cadence: csi2rx: Add enum_mbus_code pad ops

Add enum_mbus_code ioctl so that user space can know what
formats are supported to csi2rx.

Signed-off-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Reviewed-by: Julien Massot <julien.massot@collabora.com>
Tested-by: Julien Massot <julien.massot@collabora.com>
Reviewed-by: Jai Luthra <j-luthra@ti.com>
Tested-by: Jai Luthra <j-luthra@ti.com> # [Test on sk-am62a]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 401d9a7c65f8663c7754de7c57eb93e4b86939e7..2d7b0508cc9afa77ebdaaeb45784e862e3bcfe16 100644 (file)
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -393,6 +393,18 @@ out:
        return ret;
 }
 
+static int csi2rx_enum_mbus_code(struct v4l2_subdev *subdev,
+                                struct v4l2_subdev_state *state,
+                                struct v4l2_subdev_mbus_code_enum *code_enum)
+{
+       if (code_enum->index >= ARRAY_SIZE(formats))
+               return -EINVAL;
+
+       code_enum->code = formats[code_enum->index].code;
+
+       return 0;
+}
+
 static int csi2rx_set_fmt(struct v4l2_subdev *subdev,
                          struct v4l2_subdev_state *state,
                          struct v4l2_subdev_format *format)
@@ -443,6 +455,7 @@ static int csi2rx_init_state(struct v4l2_subdev *subdev,
 }
 
 static const struct v4l2_subdev_pad_ops csi2rx_pad_ops = {
+       .enum_mbus_code = csi2rx_enum_mbus_code,
        .get_fmt        = v4l2_subdev_get_fmt,
        .set_fmt        = csi2rx_set_fmt,
 };