From 11f7078c10944437b6cf335cea50ed7da675a8b1 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Thu, 27 Sep 2007 20:44:39 -0300 Subject: V4L/DVB (6272): V4L: properly fix support for capturing interlaced video in saa7134 By "capturing interlaced video" I mean that card ensures that top field is really top and vice versa (I think it takes the filed ID from signal) Properly turn on/off that support depending on signal state Signed-off-by: Maxim Levitsky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa7134/saa7134-video.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) (limited to 'drivers/media/video/saa7134/saa7134-video.c') diff --git a/drivers/media/video/saa7134/saa7134-video.c b/drivers/media/video/saa7134/saa7134-video.c index 24d579723b5..7c97ac15e66 100644 --- a/drivers/media/video/saa7134/saa7134-video.c +++ b/drivers/media/video/saa7134/saa7134-video.c @@ -40,7 +40,7 @@ static unsigned int video_debug = 0; static unsigned int gbuffers = 8; -static unsigned int noninterlaced = 1; +static unsigned int noninterlaced = 0; static unsigned int gbufsize = 720*576*4; static unsigned int gbufsize_max = 720*576*4; static char secam[] = "--"; @@ -2454,7 +2454,7 @@ int saa7134_video_init2(struct saa7134_dev *dev) return 0; } -void saa7134_irq_video_intl(struct saa7134_dev *dev) +void saa7134_irq_video_signalchange(struct saa7134_dev *dev) { static const char *st[] = { "(no signal)", "NTSC", "PAL", "SECAM" }; @@ -2466,24 +2466,28 @@ void saa7134_irq_video_intl(struct saa7134_dev *dev) (st1 & 0x40) ? "not locked" : "locked", (st2 & 0x40) ? "no" : "yes", st[st1 & 0x03]); - dev->nosignal = (st1 & 0x40) || (st2 & 0x40); + dev->nosignal = (st1 & 0x40) || (st2 & 0x40) || !(st2 & 0x1); if (dev->nosignal) { /* no video signal -> mute audio */ if (dev->ctl_automute) dev->automute = 1; saa7134_tvaudio_setmute(dev); - saa_setb(SAA7134_SYNC_CTRL, 0x20); } else { /* wake up tvaudio audio carrier scan thread */ saa7134_tvaudio_do_scan(dev); - if (!noninterlaced) - saa_clearb(SAA7134_SYNC_CTRL, 0x20); } + + if ((st2 & 0x80) && !noninterlaced && !dev->nosignal) + saa_clearb(SAA7134_SYNC_CTRL, 0x20); + else + saa_setb(SAA7134_SYNC_CTRL, 0x20); + if (dev->mops && dev->mops->signal_change) dev->mops->signal_change(dev); } + void saa7134_irq_video_done(struct saa7134_dev *dev, unsigned long status) { enum v4l2_field field; -- cgit v1.2.3