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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-03-23 22:43:22 +0000 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-03-23 22:43:22 +0000 |
| commit | 682ce8fad34b8959b55ecd597934732e68453c6d (patch) | |
| tree | 182225298ae7bedc886b58c6d4958a423312449b | |
| parent | 3c3c7a09f67b2a233bb32d98b3df6f483d084938 (diff) | |
| download | mediapointer-dvb-s2-682ce8fad34b8959b55ecd597934732e68453c6d.tar.gz mediapointer-dvb-s2-682ce8fad34b8959b55ecd597934732e68453c6d.tar.bz2 | |
cx88: Enable chroma AGC by default for all non-SECAM modes
From: Frej Drejhammar <frej.drejhammar@gmail.com>
An enabled chroma AGC will not degrade picture quality if enabled on a
color PAL or NTSC signal with nominal signal levels. It will give a
significant color reproduction improvement if the chroma signals
diverge from nominal levels. Therefore enable chroma AGC by default
for PAL and NTSC standards.
Signed-off-by: "Frej Drejhammar <frej.drejhammar@gmail.com>"
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | linux/drivers/media/video/cx88/cx88-core.c | 9 | ||||
| -rw-r--r-- | linux/drivers/media/video/cx88/cx88-video.c | 2 |
2 files changed, 5 insertions, 6 deletions
diff --git a/linux/drivers/media/video/cx88/cx88-core.c b/linux/drivers/media/video/cx88/cx88-core.c index 63a104789..a580d3706 100644 --- a/linux/drivers/media/video/cx88/cx88-core.c +++ b/linux/drivers/media/video/cx88/cx88-core.c @@ -958,11 +958,10 @@ int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm) dprintk(1,"set_tvnorm: MO_INPUT_FORMAT 0x%08x [old=0x%08x]\n", cxiformat, cx_read(MO_INPUT_FORMAT) & 0x0f); - /* Chroma AGC must be disabled if SECAM is used */ - if (norm & V4L2_STD_SECAM) - cx_andor(MO_INPUT_FORMAT, 0x40f, cxiformat); - else - cx_andor(MO_INPUT_FORMAT, 0xf, cxiformat); + /* Chroma AGC must be disabled if SECAM is used, we enable it + by default on PAL and NTSC */ + cx_andor(MO_INPUT_FORMAT, 0x40f, + norm & V4L2_STD_SECAM ? cxiformat : cxiformat | 0x400); #if 1 // FIXME: as-is from DScaler diff --git a/linux/drivers/media/video/cx88/cx88-video.c b/linux/drivers/media/video/cx88/cx88-video.c index 9974d1aed..8b7e23f2b 100644 --- a/linux/drivers/media/video/cx88/cx88-video.c +++ b/linux/drivers/media/video/cx88/cx88-video.c @@ -249,7 +249,7 @@ static struct cx88_ctrl cx8800_ctls[] = { .name = "Chroma AGC", .minimum = 0, .maximum = 1, - .default_value = 0x0, + .default_value = 0x1, .type = V4L2_CTRL_TYPE_BOOLEAN, }, .reg = MO_INPUT_FORMAT, |