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Subject[PATCH 1/2] media: i2c: ov772x: Add support for BT656 mode
Date
Add support to read the bus-type and enable BT656 mode if needed.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
---
drivers/media/i2c/ov772x.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c
index 2cc6a67..3b7dfba 100644
--- a/drivers/media/i2c/ov772x.c
+++ b/drivers/media/i2c/ov772x.c
@@ -31,6 +31,7 @@
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
#include <media/v4l2-image-sizes.h>
#include <media/v4l2-subdev.h>

@@ -434,6 +435,7 @@ struct ov772x_priv {
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_pad pad;
#endif
+ struct v4l2_fwnode_endpoint ep;
};

/*
@@ -585,7 +587,6 @@ static int ov772x_s_stream(struct v4l2_subdev *sd, int enable)
enable ? 0 : SOFT_SLEEP_MODE);
if (ret)
goto done;
-
if (enable) {
dev_dbg(&client->dev, "format %d, win %s\n",
priv->cfmt->code, priv->win->name);
@@ -1104,7 +1105,10 @@ static int ov772x_set_params(struct ov772x_priv *priv,
goto ov772x_set_fmt_error;

/* COM7: Sensor resolution and output format control. */
- ret = regmap_write(priv->regmap, COM7, win->com7_bit | cfmt->com7);
+ val = win->com7_bit | cfmt->com7;
+ if (priv->ep.bus_type == V4L2_MBUS_BT656)
+ val |= ITU656_ON_OFF;
+ ret = regmap_write(priv->regmap, COM7, val);
if (ret < 0)
goto ov772x_set_fmt_error;

@@ -1354,6 +1358,7 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = {

static int ov772x_probe(struct i2c_client *client)
{
+ struct fwnode_handle *endpoint;
struct ov772x_priv *priv;
int ret;
static const struct regmap_config ov772x_regmap_config = {
@@ -1415,6 +1420,20 @@ static int ov772x_probe(struct i2c_client *client)
goto error_clk_put;
}

+ endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
+ NULL);
+ if (!endpoint) {
+ dev_err(&client->dev, "endpoint node not found\n");
+ goto error_clk_put;
+ }
+
+ ret = v4l2_fwnode_endpoint_parse(endpoint, &priv->ep);
+ fwnode_handle_put(endpoint);
+ if (ret) {
+ dev_err(&client->dev, "Could not parse endpoint\n");
+ goto error_clk_put;
+ }
+
ret = ov772x_video_probe(priv);
if (ret < 0)
goto error_gpio_put;
--
2.7.4
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