media: imx-mipi-csis: Simplify access to source pad

The mipi_csis_calculate_params() function needs to access the pad of the
connected source. The pad is already available in csis->source.pad, but
the function takes a convoluted path by getting the pad index and
indexing the source subdev's pads array. Simplify it.

No functional change is intended.

Link: https://lore.kernel.org/r/20250822002734.23516-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/platform/nxp/imx-mipi-csis.c b/drivers/media/platform/nxp/imx-mipi-csis.c
index 2beb5f43c2c0121378c03efa61aedde335d15403..46f93cd677e32812d85a217105545ff2b7095eb4 100644 (file)
--- a/drivers/media/platform/nxp/imx-mipi-csis.c
+++ b/drivers/media/platform/nxp/imx-mipi-csis.c
@@ -579,13 +579,11 @@ static void __mipi_csis_set_format(struct mipi_csis_device *csis,
 static int mipi_csis_calculate_params(struct mipi_csis_device *csis,
                                      const struct csis_pix_format *csis_fmt)
 {
-       struct media_pad *src_pad =
-               &csis->source.sd->entity.pads[csis->source.pad->index];
        s64 link_freq;
        u32 lane_rate;
 
        /* Calculate the line rate from the pixel rate. */
-       link_freq = v4l2_get_link_freq(src_pad, csis_fmt->width,
+       link_freq = v4l2_get_link_freq(csis->source.pad, csis_fmt->width,
                                       csis->bus.num_data_lanes * 2);
        if (link_freq < 0) {
                dev_err(csis->dev, "Unable to obtain link frequency: %d\n",