Re: [PATCH RFC v4 6/7] v4l: enable some IOCTLs for SDR receiver

Hans Verkuil
2013-12-19T09:03:06Z

On 12/19/2013 05:00 AM, Antti Palosaari wrote:
> Enable stream format (FMT) IOCTLs for SDR use. These are used for negotiate
> used data stream format.
>
> Reorganise some some IOCTL selection logic.
>
> Cc: Hans Verkuil <hverkuil@xs4all.nl>
> Signed-off-by: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/v4l2-core/v4l2-dev.c | 21 ++++++++++++++++++---
> drivers/media/v4l2-core/v4l2-ioctl.c | 35 +++++++++++++++++++++++++++++++++++
> 2 files changed, 53 insertions(+), 3 deletions(-)
>

Can you add this patch to your patch series? Or fold it into your patch 6/7, that's
fine too.

It fixes a small bug I found (not yours, it was there already) where the modulator
ioctls could be enabled for non-radio devices. Currently the modulator ioctls are
only valid for radio.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>

Regards,

Hans

diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index 2f0982f..bcfd33b 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -562,6 +562,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
const struct v4l2_ioctl_ops *ops = vdev->ioctl_ops;
bool is_vid = vdev->vfl_type == VFL_TYPE_GRABBER;
bool is_vbi = vdev->vfl_type == VFL_TYPE_VBI;
+ bool is_radio = vdev->vfl_type == VFL_TYPE_RADIO;
bool is_sdr = vdev->vfl_type == VFL_TYPE_SDR;
bool is_rx = vdev->vfl_dir != VFL_DIR_TX;
bool is_tx = vdev->vfl_dir != VFL_DIR_RX;
@@ -735,8 +736,8 @@ static void determine_valid_ioctls(struct video_device *vdev)
SET_VALID_IOCTL(ops, VIDIOC_ENUM_DV_TIMINGS, vidioc_enum_dv_timings);
SET_VALID_IOCTL(ops, VIDIOC_DV_TIMINGS_CAP, vidioc_dv_timings_cap);
}
- if (is_tx) {
- /* transmitter only ioctls */
+ if (is_tx && (is_radio || is_sdr)) {
+ /* radio transmitter only ioctls */
SET_VALID_IOCTL(ops, VIDIOC_G_MODULATOR, vidioc_g_modulator);
SET_VALID_IOCTL(ops, VIDIOC_S_MODULATOR, vidioc_s_modulator);
}