Define tuner types V4L2_TUNER_ADC and V4L2_TUNER_SDR for SDR usage.
ADC is used for setting sampling rate (sampling frequency) to SDR
device.
Another tuner type, SDR, is possible RF tuner. Is is used to
down-convert RF frequency to range ADC could sample. It is optional
for SDR device.
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).
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/v4l2-core/v4l2-ioctl.c | 38 +++++++++++++++++++++++++-----------
include/uapi/linux/videodev2.h | 2 ++
2 files changed, 29 insertions(+), 11 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index bc10684..ee91a9f 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -1288,8 +1288,13 @@ static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
struct video_device *vfd = video_devdata(file);
struct v4l2_frequency *p = arg;
- p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
- V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ if (vfd->vfl_type == VFL_TYPE_SDR) {
+ if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_SDR)
+ return -EINVAL;
+ } else {
+ p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
+ V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ }
return ops->vidioc_g_frequency(file, fh, p);
}
@@ -1300,10 +1305,16 @@ static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
const struct v4l2_frequency *p = arg;
enum v4l2_tuner_type type;
- type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
- V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
- if (p->type != type)
- return -EINVAL;
+ if (vfd->vfl_type == VFL_TYPE_SDR) {
+ if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_SDR)
+ return -EINVAL;
+ type = p->type;
+ } else {
+ type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
+ V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ if (type != p->type)
+ return -EINVAL;
+ }
return ops->vidioc_s_frequency(file, fh, p);
}
@@ -1882,11 +1893,16 @@ static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
enum v4l2_tuner_type type;
int err;
- type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
- V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
-
- if (type != p->type)
- return -EINVAL;
+ if (vfd->vfl_type == VFL_TYPE_SDR) {
+ if (p->type != V4L2_TUNER_ADC && p->type != V4L2_TUNER_SDR)
+ return -EINVAL;
+ type = p->type;
+ } else {
+ type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
+ V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
+ if (type != p->type)
+ return -EINVAL;
+ }
if (ops->vidioc_enum_freq_bands)
return ops->vidioc_enum_freq_bands(file, fh, p);
if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index b8ee9048..6c6a601 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_SDR = 5,
};
enum v4l2_memory {
--
1.8.4.2
--
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