[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>

2 files changed, 8 insertions, 1 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);
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index c768c9f8abc2..eec6e460f649 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -24,7 +24,8 @@
 #define VFL_TYPE_VBI            1
 #define VFL_TYPE_RADIO          2
 #define VFL_TYPE_SUBDEV         3
-#define VFL_TYPE_MAX            4
+#define VFL_TYPE_SDR            4
+#define VFL_TYPE_MAX            5
 
 /* Is this a receiver, transmitter or mem-to-mem? */
 /* Ignored for VFL_TYPE_SUBDEV. */