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[media] cobalt: support reduced fps

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Add support for reduced fps (i.e. 59.94 Hz instead of 60 Hz) for the
HDMI output.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2016-07-17 06:03:15 -03:00 committed by Mauro Carvalho Chehab
parent 969ac39e3d
commit 605a74e628
1 changed files with 5 additions and 2 deletions
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7
drivers/media/pci/cobalt/cobalt-v4l2.c
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@ -161,8 +161,11 @@ static void cobalt_enable_output(struct cobalt_stream *s)
struct v4l2_subdev_format sd_fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
u64 clk = bt->pixelclock;
if (!cobalt_cpld_set_freq(cobalt, bt->pixelclock)) {
if (bt->flags & V4L2_DV_FL_REDUCED_FPS)
clk = div_u64(clk * 1000ULL, 1001);
if (!cobalt_cpld_set_freq(cobalt, clk)) {
cobalt_err("pixelclock out of range\n");
return;
}
@ -644,7 +647,7 @@ static int cobalt_s_dv_timings(struct file *file, void *priv_fh,
return 0;
}
if (v4l2_match_dv_timings(timings, &s->timings, 0, false))
if (v4l2_match_dv_timings(timings, &s->timings, 0, true))
return 0;
if (vb2_is_busy(&s->q))