[PATCH v9 7/9] media: intel/ipu6: Obtain link frequency from the remote subdev pad

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Obtain the link frequency from the sub-device's pad instead of a control
handler. This allows obtaining it using the get_mbus_config() sub-device
pad op which is the only method supported by the IVSC driver.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
index 051898ce53f4..da8581a37e22 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-isys-csi2.c
@@ -80,25 +80,19 @@ static const struct ipu6_csi2_error dphy_rx_errors[] = {
 s64 ipu6_isys_csi2_get_link_freq(struct ipu6_isys_csi2 *csi2)
 {
 	struct media_pad *src_pad;
-	struct v4l2_subdev *ext_sd;
-	struct device *dev;
 
 	if (!csi2)
 		return -EINVAL;
 
-	dev = &csi2->isys->adev->auxdev.dev;
 	src_pad = media_entity_remote_source_pad_unique(&csi2->asd.sd.entity);
 	if (IS_ERR(src_pad)) {
-		dev_err(dev, "can't get source pad of %s (%ld)\n",
+		dev_err(&csi2->isys->adev->auxdev.dev,
+			"can't get source pad of %s (%ld)\n",
 			csi2->asd.sd.name, PTR_ERR(src_pad));
 		return PTR_ERR(src_pad);
 	}
 
-	ext_sd = media_entity_to_v4l2_subdev(src_pad->entity);
-	if (WARN(!ext_sd, "Failed to get subdev for %s\n", csi2->asd.sd.name))
-		return -ENODEV;
-
-	return v4l2_get_link_freq(ext_sd->ctrl_handler, 0, 0);
+	return v4l2_get_link_freq(src_pad, 0, 0);
 }
 
 static int csi2_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
-- 
2.39.5