[PATCH v2 06/10] media: adv7180: implement g_parm

From	Steve Longerbeam <slongerbeam@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 06/10] media: adv7180: implement g_parm
Date	2016-07-20 02:10 +0200
Message-ID	<rWNfj-2pz-31@gated-at.bofh.it> (permalink)
References	<rWNfj-2pz-7@gated-at.bofh.it> <rWNfj-2pz-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Implement g_parm to return the current standard's frame period.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Tested-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Tim Harvey <tharvey@gateworks.com>
---
 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 8612d21..8259549 100644
--- a/drivers/media/i2c/adv7180.c
+++ b/drivers/media/i2c/adv7180.c
@@ -766,6 +766,27 @@ 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);
@@ -824,6 +845,7 @@ static int adv7180_subscribe_event(struct v4l2_subdev *sd,
 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,
-- 
1.9.1

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[PATCH v2 06/10] media: adv7180: implement g_parm Steve Longerbeam <slongerbeam@gmail.com> - 2016-07-20 02:10 +0200

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