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| author | Antti Palosaari | 2013-12-12 00:24:02 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2014-03-05 18:15:03 +0100 |
| commit | 84099a282e1ba0facf7eee5108031a8f38f4b4fe (patch) | |
| tree | c29254ec0bbfa47aa2aa7985fc4a99e7e23cae4c /include/uapi/linux/videodev2.h | |
| parent | [media] v4l: add device type for Software Defined Radio (diff) | |
| download | kernel-qcow2-linux-84099a282e1ba0facf7eee5108031a8f38f4b4fe.tar.gz kernel-qcow2-linux-84099a282e1ba0facf7eee5108031a8f38f4b4fe.tar.xz kernel-qcow2-linux-84099a282e1ba0facf7eee5108031a8f38f4b4fe.zip | |
[media] v4l: add new tuner types for SDR
Define tuner types V4L2_TUNER_ADC and V4L2_TUNER_RF for SDR usage.
ADC is used for setting sampling rate (sampling frequency) to SDR
device.
Another tuner type, named as V4L2_TUNER_RF, is possible RF tuner.
Is is used to down-convert RF frequency to range ADC could sample.
Having RF tuner is optional, whilst in practice it is almost always
there.
Also add checks to VIDIOC_G_FREQUENCY, VIDIOC_S_FREQUENCY and
VIDIOC_ENUM_FREQ_BANDS only allow these two tuner types when device
type is SDR (VFL_TYPE_SDR). For VIDIOC_G_FREQUENCY we do not check
tuner type, instead override type with V4L2_TUNER_ADC in every
case (requested by Hans in order to keep functionality in line with
existing tuners and existing API does not specify it).
Prohibit VIDIOC_S_HW_FREQ_SEEK explicitly when device type is SDR,
as device cannot do hardware seek without a hardware demodulator.
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>
Diffstat (limited to 'include/uapi/linux/videodev2.h')
| -rw-r--r-- | include/uapi/linux/videodev2.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 6ae7bbe988cc..9dc79d104d65 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -159,6 +159,8 @@ enum v4l2_tuner_type { V4L2_TUNER_RADIO = 1, V4L2_TUNER_ANALOG_TV = 2, V4L2_TUNER_DIGITAL_TV = 3, + V4L2_TUNER_ADC = 4, + V4L2_TUNER_RF = 5, }; enum v4l2_memory { |