media: i2c: imx258: Parse and register properties

Analogous to e.g. the imx219. This enables propagating
V4L2_CID_CAMERA_ORIENTATION and V4L2_CID_CAMERA_SENSOR_ROTATION values.
The motivation is to allow libcamera detect these values from the device
tree and propagate them further to e.g. Pipewire.

While at it, reserve space for 3 additional controls even if
v4l2_ctrl_new_fwnode_properties() can only register 2 of them, to fix the
existing implementation which reserve space for 8 controls but actually
registers 9.

[Sakari Ailus: Rewrapped the commit message and removed changelog]

Signed-off-by: Robert Mader <robert.mader@collabora.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index eab5fc1..3b56086 100644 (file)
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -9,6 +9,7 @@
 #include <linux/pm_runtime.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
 #include <asm/unaligned.h>
 
 #define IMX258_REG_VALUE_08BIT         1
@@ -1148,6 +1149,7 @@ static const struct v4l2_subdev_internal_ops imx258_internal_ops = {
 static int imx258_init_controls(struct imx258 *imx258)
 {
        struct i2c_client *client = v4l2_get_subdevdata(&imx258->sd);
+       struct v4l2_fwnode_device_properties props;
        struct v4l2_ctrl_handler *ctrl_hdlr;
        s64 vblank_def;
        s64 vblank_min;
@@ -1156,7 +1158,7 @@ static int imx258_init_controls(struct imx258 *imx258)
        int ret;
 
        ctrl_hdlr = &imx258->ctrl_handler;
-       ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
+       ret = v4l2_ctrl_handler_init(ctrl_hdlr, 11);
        if (ret)
                return ret;
 
@@ -1232,6 +1234,15 @@ static int imx258_init_controls(struct imx258 *imx258)
                goto error;
        }
 
+       ret = v4l2_fwnode_device_parse(&client->dev, &props);
+       if (ret)
+               goto error;
+
+       ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx258_ctrl_ops,
+                                             &props);
+       if (ret)
+               goto error;
+
        imx258->sd.ctrl_handler = ctrl_hdlr;
 
        return 0;