From: Tomi Valkeinen Date: Fri, 30 May 2025 13:50:30 +0000 (+0300) Subject: media: rcar-csi2: Use the pad version of v4l2_get_link_freq() X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=145437cc545271e1fa3072ef9e899551547a9822;p=thirdparty%2Flinux.git media: rcar-csi2: Use the pad version of v4l2_get_link_freq() The pad-aware version of v4l2_get_link_freq() tries to retrieve the link frequency from the media bus configuration using the get_mbus_config operation, and only if the subdevice does not implement this operation falls back to the old method of getting it using the V4L2_CID_LINK_FREQ or V4L2_CID_PIXEL_RATE control. Update the VIN driver to use the pad-aware version to be able to support subdevices that only provides the link frequency in the media bus configuration. As the implementation falls back to the old method if the subdevice doesn't support get_mbus_config, or doesn't provide a link frequency in the v4l2_mbus_config struct, this is fully backward compatible. Signed-off-by: Tomi Valkeinen Reviewed-by: Niklas Söderlund Reviewed-by: Laurent Pinchart Link: https://lore.kernel.org/r/20250530-rcar-streams-v3-1-026655df7138@ideasonboard.com Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/platform/renesas/rcar-csi2.c b/drivers/media/platform/renesas/rcar-csi2.c index 0350eb76df36d..d1b31ab8b8c4a 100644 --- a/drivers/media/platform/renesas/rcar-csi2.c +++ b/drivers/media/platform/renesas/rcar-csi2.c @@ -962,6 +962,7 @@ static int rcsi2_set_phypll(struct rcar_csi2 *priv, unsigned int mbps) static int rcsi2_calc_mbps(struct rcar_csi2 *priv, unsigned int bpp, unsigned int lanes) { + struct media_pad *remote_pad; struct v4l2_subdev *source; s64 freq; u64 mbps; @@ -970,8 +971,9 @@ static int rcsi2_calc_mbps(struct rcar_csi2 *priv, unsigned int bpp, return -ENODEV; source = priv->remote; + remote_pad = &source->entity.pads[priv->remote_pad]; - freq = v4l2_get_link_freq(source->ctrl_handler, bpp, 2 * lanes); + freq = v4l2_get_link_freq(remote_pad, bpp, 2 * lanes); if (freq < 0) { int ret = (int)freq;