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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-08-10 10:53:00 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-08-10 10:53:00 -0300 |
| commit | a4fd422232350c268306a54f169e5b1fe3655f8f (patch) | |
| tree | 0568850f26573c4a7848a081ef774d8cb9a0ccd8 /linux/drivers | |
| parent | 3c6dcb306a9773419a04a1f47bfa00ed856b5517 (diff) | |
| download | mediapointer-dvb-s2-a4fd422232350c268306a54f169e5b1fe3655f8f.tar.gz mediapointer-dvb-s2-a4fd422232350c268306a54f169e5b1fe3655f8f.tar.bz2 | |
em28xx: fix: avoid having a bad colored image with webcams
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Register 0x13 seems to be a sort of image control, maybe gamma. Lower
values produce better images, while higher values increases the contrast
and shifts colors to green. 0xff produces a black image.
If this register is left alone, a random value can be found at the
register, producing weird results.
This register doesn't seem to affect tv streams.
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'linux/drivers')
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-core.c b/linux/drivers/media/video/em28xx/em28xx-core.c index 10da3ad82..46cb13182 100644 --- a/linux/drivers/media/video/em28xx/em28xx-core.c +++ b/linux/drivers/media/video/em28xx/em28xx-core.c @@ -632,6 +632,9 @@ int em28xx_capture_start(struct em28xx *dev, int start) return rc; } + if (dev->board.is_webcam) + rc = em28xx_write_reg(dev, 0x13, 0x0c); + /* enable video capture */ rc = em28xx_write_reg(dev, 0x48, 0x00); |