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From 969dff5e0dbd9ad6b289073410dbd3013ccd5e31 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Mon, 10 Feb 2020 21:09:29 +0300
Subject: [PATCH] media: i2c: ov10640: add fps setup
This adds framerate change support for OV10640 imager
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
drivers/media/i2c/soc_camera/ov10640.c | 50 ++++++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/media/i2c/soc_camera/ov10640.c b/drivers/media/i2c/soc_camera/ov10640.c
index fab2c0d..0af091e 100644
--- a/drivers/media/i2c/soc_camera/ov10640.c
+++ b/drivers/media/i2c/soc_camera/ov10640.c
@@ -38,6 +38,7 @@ struct ov10640_priv {
struct media_pad pad;
struct v4l2_rect rect;
int subsampling;
+ int fps_numerator;
int fps_denominator;
int init_complete;
u8 id[6];
@@ -51,6 +52,7 @@ struct ov10640_priv {
int port;
int gpio_resetb;
int gpio_fsin;
+ int vts;
};
static inline struct ov10640_priv *to_ov10640(const struct i2c_client *client)
@@ -276,6 +278,51 @@ static int ov10640_g_mbus_config(struct v4l2_subdev *sd,
return 0;
}
+static int ov10640_g_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov10640_priv *priv = to_ov10640(client);
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ memset(cp, 0, sizeof(struct v4l2_captureparm));
+ cp->capability = V4L2_CAP_TIMEPERFRAME;
+ cp->timeperframe.numerator = priv->fps_numerator;
+ cp->timeperframe.denominator = priv->fps_denominator;
+
+ return 0;
+}
+
+static int ov10640_s_parm(struct v4l2_subdev *sd, struct v4l2_streamparm *parms)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov10640_priv *priv = to_ov10640(client);
+ struct v4l2_captureparm *cp = &parms->parm.capture;
+ int ret = 0;
+
+ if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (cp->extendedmode != 0)
+ return -EINVAL;
+
+ if (priv->fps_denominator != cp->timeperframe.denominator ||
+ priv->fps_numerator != cp->timeperframe.numerator) {
+ priv->vts = (OV10640_SENSOR_HEIGHT + 208) * 30 * cp->timeperframe.numerator / cp->timeperframe.denominator;
+
+ reg16_write(client, 0x3012, 0);
+ reg16_write(client, 0x3082, priv->vts >> 8);
+ reg16_write(client, 0x3083, priv->vts & 0xff);
+ ret = reg16_write(client, 0x3012, 1);
+
+ priv->fps_denominator = cp->timeperframe.numerator;
+ priv->fps_denominator = cp->timeperframe.denominator;
+ }
+
+ return ret;
+}
+
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ov10640_g_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
@@ -417,6 +464,8 @@ static const struct v4l2_ctrl_ops ov10640_ctrl_ops = {
static struct v4l2_subdev_video_ops ov10640_video_ops = {
.s_stream = ov10640_s_stream,
.g_mbus_config = ov10640_g_mbus_config,
+ .g_parm = ov10640_g_parm,
+ .s_parm = ov10640_s_parm,
};
static const struct v4l2_subdev_pad_ops ov10640_subdev_pad_ops = {
@@ -643,6 +692,7 @@ static int ov10640_probe(struct i2c_client *client,
priv->rect.top = 0;
priv->rect.width = OV10640_DEFAULT_WIDTH;
priv->rect.height = OV10640_DEFAULT_HEIGHT;
+ priv->fps_numerator = 1;
priv->fps_denominator = 30;
v4l2_ctrl_handler_init(&priv->hdl, 4);
--
2.7.4
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