On Sat, Nov 15, 2014 at 6:08 PM, Hans Verkuil <hverk...@xs4all.nl> wrote: > Hi Andrey, > > On 11/15/2014 02:48 PM, Andrey Utkin wrote: >> Thanks to all for the great help so far, but I've got another issue >> with upstream driver. >> >> In upstream there's no more module parameter for video standard >> (NTSC/PAL). But there's VIDIOC_S_STD handling procedure. But it turns >> out not to work correctly: the frame is offset, so that in the bottom >> there's black horizontal bar. >> The S_STD ioctl call actually makes difference, because without that >> the frame "slides" vertically all the time. But after the call the >> picture is not correct. > > That's strange. I know I tested it at the time. I assume it is the PAL > standard that isn't working (as opposed to NTSC)? Or does it just always > fail when you switch between the two standards?
Switching to PAL is not working (NTSC is default). Not sure if it fails to make _any_ switching, or whether it fails to switch between (hardcoded or switched) PAL to NTSC. I can test it a bit later. >> >> Such change didn't help: >> https://github.com/krieger-od/linux/commit/55b796c010b622430cb85f5b8d7d14fef6f04fb4 >> So, temporarily, I've hardcoded this for exact customer who uses PAL: >> https://github.com/krieger-od/linux/commit/2c26302dfa6d7aa74cf17a89793daecbb89ae93a >> rmmod/modprobe cycle works fine and doesn't make any difference from >> reboot, but still it works correctly only with PAL hardcoded for the >> first-time initialization. >> >> Any ideas why wouldn't it work to change the mode after the driver load? > > Not really. I will have to test this next week (either Monday or Friday) with > my solo board. Thanks in advance. >> Would it be allowed to add back that kernel module parameter (the one >> passed at module load time)? > > No. That's a hack, the S_STD call should just work and we need to figure out > why it fails. Ok. -- Bluecherry developer. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
