[media] vivi: add v4l2_ctrl_modify_range test case
Update the brighness range depending on the selected input. Useful for
testing control range events.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/platform/vivi.c b/drivers/media/platform/vivi.c
index c46d2e8..85bc314 100644
--- a/drivers/media/platform/vivi.c
+++ b/drivers/media/platform/vivi.c
@@ -1093,6 +1093,15 @@
return 0;
dev->input = i;
+ /*
+ * Modify the brightness range depending on the input.
+ * This makes it easy to use vivi to test if applications can
+ * handle control range modifications and is also how this is
+ * typically used in practice as different inputs may be hooked
+ * up to different receivers with different control ranges.
+ */
+ v4l2_ctrl_modify_range(dev->brightness,
+ 128 * i, 255 + 128 * i, 1, 127 + 128 * i);
precalculate_bars(dev);
precalculate_line(dev);
return 0;