From af2d68d1be24972a79b1616cf7d4d29137841f87 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 12 Mar 2013 03:56:55 -0300 Subject: [PATCH] [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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vivi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/platform/vivi.c b/drivers/media/platform/vivi.c index c46d2e8677a5..85bc314382d3 100644 --- a/drivers/media/platform/vivi.c +++ b/drivers/media/platform/vivi.c @@ -1093,6 +1093,15 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i) 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; -- 2.20.1