On Wed, Jul 6, 2016 at 3:59 PM, Steve Longerbeam <slongerbeam@xxxxxxxxx> wrote:
> Implement g_parm to return the current standard's frame period.
>
> Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
> ---
> drivers/media/i2c/adv7180.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
> index 38e5161..42816d4 100644
> --- a/drivers/media/i2c/adv7180.c
> +++ b/drivers/media/i2c/adv7180.c
> @@ -741,6 +741,27 @@ static int adv7180_g_mbus_config(struct v4l2_subdev *sd,
> return 0;
> }
>
> +static int adv7180_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *a)
> +{
> + struct adv7180_state *state = to_state(sd);
> + struct v4l2_captureparm *cparm = &a->parm.capture;
> +
> + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + return -EINVAL;
> +
> + memset(a, 0, sizeof(*a));
> + a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + if (state->curr_norm & V4L2_STD_525_60) {
> + cparm->timeperframe.numerator = 1001;
> + cparm->timeperframe.denominator = 30000;
> + } else {
> + cparm->timeperframe.numerator = 1;
> + cparm->timeperframe.denominator = 25;
> + }
> +
> + return 0;
> +}
> +
> static int adv7180_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *cropcap)
> {
> struct adv7180_state *state = to_state(sd);
> @@ -765,6 +786,7 @@ static int adv7180_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm)
> static const struct v4l2_subdev_video_ops adv7180_video_ops = {
> .s_std = adv7180_s_std,
> .g_std = adv7180_g_std,
> + .g_parm = adv7180_g_parm,
> .querystd = adv7180_querystd,
> .g_input_status = adv7180_g_input_status,
> .s_routing = adv7180_s_routing,
> --
Steve,
Tested on an IMX6 Gateworks Ventana with IMX6 capture drivers [1].
Tested-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
Acked-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
Added to Cc:
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
Regards,
Tim
[1] - http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/102914
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