[media] v4l: add device type for Software Defined Radio

Add new V4L device type VFL_TYPE_SDR for Software Defined Radio.
It is registered as /dev/swradio0 (/dev/sdr0 was already reserved).

Signed-off-by: Antti Palosaari <crope@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index 0a30dbf3d05c..9764ca04f8e2 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -758,6 +758,8 @@ static void determine_valid_ioctls(struct video_device *vdev)
  *      %VFL_TYPE_RADIO - A radio card
  *
  *      %VFL_TYPE_SUBDEV - A subdevice
+ *
+ *      %VFL_TYPE_SDR - Software Defined Radio
  */
 int __video_register_device(struct video_device *vdev, int type, int nr,
                 int warn_if_nr_in_use, struct module *owner)
@@ -797,6 +799,10 @@ int __video_register_device(struct video_device *vdev, int type, int nr,
         case VFL_TYPE_SUBDEV:
                 name_base = "v4l-subdev";
                 break;
+        case VFL_TYPE_SDR:
+                /* Use device name 'swradio' because 'sdr' was already taken. */
+                name_base = "swradio";
+                break;
         default:
                 printk(KERN_ERR "%s called with unknown type: %d\n",
                        __func__, type);