The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL,
VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be
used to enumerate and configure a subdev's frame rate from userspace.
Two new video::g/s_frame_interval subdev operations are introduced to
support those ioctls. The existing video::g/s_parm operations are
deprecated and shouldn't be used anymore.
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/media/video/v4l2-subdev.c | 16 ++++++++++++++++
include/linux/v4l2-subdev.h | 24 ++++++++++++++++++++++++
include/media/v4l2-subdev.h | 7 +++++++
3 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/drivers/media/video/v4l2-subdev.c b/drivers/media/video/v4l2-subdev.c
index d8b261f..8ddb2fb 100644
--- a/drivers/media/video/v4l2-subdev.c
+++ b/drivers/media/video/v4l2-subdev.c
@@ -208,6 +208,22 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
fse);
}
+ case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
+ return v4l2_subdev_call(sd, video, g_frame_interval, arg);
+
+ case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
+ return v4l2_subdev_call(sd, video, s_frame_interval, arg);
+
+ case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
+ struct v4l2_subdev_frame_interval_enum *fie = arg;
+
+ if (fie->pad >= sd->entity.num_pads)
+ return -EINVAL;
+
+ return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh,
+ fie);
+ }
+
default:
return -ENOIOCTLCMD;
}
diff --git a/include/linux/v4l2-subdev.h b/include/linux/v4l2-subdev.h
index 6504f22..e3362aa 100644
--- a/include/linux/v4l2-subdev.h
+++ b/include/linux/v4l2-subdev.h
@@ -56,11 +56,35 @@ struct v4l2_subdev_frame_size_enum {
__u32 reserved[9];
};
+/**
+ * struct v4l2_subdev_pad_frame_rate
+ */
+struct v4l2_subdev_frame_interval {
+ struct v4l2_fract interval;
+ __u32 reserved[6];
+};
+
+struct v4l2_subdev_frame_interval_enum {
+ __u32 index;
+ __u32 pad;
+ __u32 code;
+ __u32 width;
+ __u32 height;
+ struct v4l2_fract interval;
+ __u32 reserved[9];
+};
+
#define VIDIOC_SUBDEV_G_FMT _IOWR('V', 4, struct v4l2_subdev_pad_format)
#define VIDIOC_SUBDEV_S_FMT _IOWR('V', 5, struct v4l2_subdev_pad_format)
+#define VIDIOC_SUBDEV_G_FRAME_INTERVAL \
+ _IOWR('V', 6, struct v4l2_subdev_frame_interval)
+#define VIDIOC_SUBDEV_S_FRAME_INTERVAL \
+ _IOWR('V', 7, struct v4l2_subdev_frame_interval)
#define VIDIOC_SUBDEV_ENUM_MBUS_CODE \
_IOWR('V', 8, struct v4l2_subdev_pad_mbus_code_enum)
#define VIDIOC_SUBDEV_ENUM_FRAME_SIZE \
_IOWR('V', 9, struct v4l2_subdev_frame_size_enum)
+#define VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL \
+ _IOWR('V', 10, struct v4l2_subdev_frame_interval_enum)
#endif
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index acbcd8f..58ef923 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -245,6 +245,10 @@ struct v4l2_subdev_video_ops {
int (*s_crop)(struct v4l2_subdev *sd, struct v4l2_crop *crop);
int (*g_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
int (*s_parm)(struct v4l2_subdev *sd, struct v4l2_streamparm *param);
+ int (*g_frame_interval)(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *interval);
+ int (*s_frame_interval)(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *interval);
int (*enum_framesizes)(struct v4l2_subdev *sd, struct v4l2_frmsizeenum *fsize);
int (*enum_frameintervals)(struct v4l2_subdev *sd, struct v4l2_frmivalenum *fival);
int (*enum_dv_presets) (struct v4l2_subdev *sd,
@@ -406,6 +410,9 @@ struct v4l2_subdev_pad_ops {
int (*enum_frame_size)(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh,
struct v4l2_subdev_frame_size_enum *fse);
+ int (*enum_frame_interval)(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_interval_enum *fie);
int (*get_fmt)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
unsigned int pad, struct v4l2_mbus_framefmt *fmt,
enum v4l2_subdev_format which);
--
1.7.1
--
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