From a4fd422232350c268306a54f169e5b1fe3655f8f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 10 Aug 2009 10:53:00 -0300 Subject: em28xx: fix: avoid having a bad colored image with webcams From: Mauro Carvalho Chehab 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 --- linux/drivers/media/video/em28xx/em28xx-core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'linux/drivers') 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); -- cgit v1.2.3