Well, that was painful. After a full day working with the various cards, I managed to get all of them working. A couple of caveats: The analog tuner on the HVR-1250 isn’t supported yet. The composite and s-video inputs are working but the mt2131 driver doesn’t have the required support for tuning to analog stations…. Read More
hvr-1800
HVR-18×0 testing….
Ever wonder why it’s so common for somebody to check in a change to make some new product work, causing a regression in the tuner that *you* have? Well, here’s why: [lightbox title=”HVR-18×0 testing” href=”../../blog/wp-content/uploads/2012/06/cxboards1.jpg”][/lightbox] All these boards use the exact same driver, despite the fact that they have different core chips and only some… Read More
HVR-1800 analog debugging, part 3
Spent this evening digging into how the 0x418, 0x419, 0x420, and 0x421 registers are getting the values which cause video corruption. Just as a sanity check I dropped in the HVR-1850 that Steven was kind enough to loan me, and confirmed that the problem doesn’t occur there. This also allowed me to dump out the… Read More
HVR-1800 analog debugging, part 2
When we last left off, we had reproduced the basic behavior that users reported, using the stock command line tools such as v4l2-ctl and “mplayer /dev/video1″. Now we’ll talk a bit about the debugging process. To give some context, let’s look at a quick diagram showing the various parts of the device: [lightbox title=”HVR-1800 analog… Read More
HVR-1800 analog debugging
As a result of numerous users reporting that their HVR-1800 didn’t work in analog mode, I finally got some time tonight to dig into the situation. If you don’t care about the details, the short answer is I’m working on it and be patient. If you want to get some insight into the gory debugging… Read More
HVR-1800/1850 Analog support
After quite some time of talking about it, we finally got around to getting the analog support for the HVR-1850 submitted upstream. Support for all things analog is present and tested on all the various input types: the MPEG encoder, raw capture, analog audio. This patch series also includes a fix for a long-standing regression… Read More
HVR-1800 and other stuff going on…
Been a few days since I’ve posted an update. Here’s a brief summary of things that have been going on in the last week: Progress continued on improving em28xx analog quality. I isolated a problem with chroma AGC in the saa7115, and am working on a fix now. I nailed down most of the analog… Read More
HVR1800 – A call for testers
So way back at the end of September, just after the Plumbers Conference 2009 I mentioned on the blog that we were taking another look at the HVR1800 raw audio and VBI support. Well it took a little longer than expected but yesterday we posted a cx23885-audio tree that contains two sets of important changes…. Read More
HVR1800 about to get analog audio and VBI support
Things are ticking along nicely here at KernelLabs. The Linux Plumbers Conference 2009 took up most of last week and aside from my posting replies here in the blog threads it feels like I haven’t posted here in a very long time. So what’s new you ask? From my perspective I took a look at… Read More