diff options
Diffstat (limited to 'drivers/media/video/ov7670.c')
| -rw-r--r-- | drivers/media/video/ov7670.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/media/video/ov7670.c b/drivers/media/video/ov7670.c index 089013ec987..ffccac5c2d7 100644 --- a/drivers/media/video/ov7670.c +++ b/drivers/media/video/ov7670.c @@ -887,14 +887,28 @@ static int ov7670_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms) } - /* - * Code for dealing with controls. + * Frame intervals. Since frame rates are controlled with the clock + * divider, we can only do 30/n for integer n values. So no continuous + * or stepwise options. Here we just pick a handful of logical values. */ +static int ov7670_frame_rates[] = { 30, 15, 10, 5, 1 }; +static int ov7670_enum_frameintervals(struct v4l2_subdev *sd, + struct v4l2_frmivalenum *interval) +{ + if (interval->index >= ARRAY_SIZE(ov7670_frame_rates)) + return -EINVAL; + interval->type = V4L2_FRMIVAL_TYPE_DISCRETE; + interval->discrete.numerator = 1; + interval->discrete.denominator = ov7670_frame_rates[interval->index]; + return 0; +} - +/* + * Code for dealing with controls. + */ static int ov7670_store_cmatrix(struct v4l2_subdev *sd, int matrix[CMATRIX_LEN]) @@ -1438,6 +1452,7 @@ static const struct v4l2_subdev_video_ops ov7670_video_ops = { .s_mbus_fmt = ov7670_s_mbus_fmt, .s_parm = ov7670_s_parm, .g_parm = ov7670_g_parm, + .enum_frameintervals = ov7670_enum_frameintervals, }; static const struct v4l2_subdev_ops ov7670_ops = { |