On Tuesday, February 07, 2012 23:20:19 Ondrej Zary wrote: > On Sunday 05 February 2012 14:17:05 Hans Verkuil wrote: > > These patches improve the tea575x-tuner module to make it up to date with > > the latest V4L2 frameworks. > > > > The maxiradio driver has also been converted to use the tea575x-tuner and > > I've used that card to test it. > > > > Unfortunately, this card can't read the data pin, so the new hardware seek > > functionality has been tested only partially (yes, it seeks, but when it > > finds a channel I can't read back the frequency). > > > > Ondrej, are you able to test these patches for the sound cards that use > > this tea575x tuner? > > > > Note that these two patches rely on other work that I did and that hasn't > > been merged yet. So it is best to pull from my git tree: > > > > http://git.linuxtv.org/hverkuil/media_tree.git/shortlog/refs/heads/radio-pc > >i2 > > > > You can use the v4l-utils repository (http://git.linuxtv.org/v4l-utils.git) > > to test the drivers: the v4l2-compliance test should succeed and with > > v4l2-ctl you can test the hardware seek: > > > > To seek down: > > > > v4l2-ctl -d /dev/radio0 --freq-seek=dir=0 > > > > To seek up: > > > > v4l2-ctl -d /dev/radio0 --freq-seek=dir=1 > > > > To do the compliance test: > > > > v4l2-compliance -r /dev/radio0 > > It seems to work (tested with SF64-PCR - snd_fm801) but the seek is severely > broken. Reading the frequency immediately after seek does not work, it always > returns the old value (haven't found a delay that works). Reading it later > (copied back snd_tea575x_get_freq function) works. The chip seeks randomly up > or down, ignoring UP/DOWN flag and often stops at wrong place (only noise) or > even outside the FM range. > > So I strongly suggest not to enable this (mis-)feature. The HW seems to be > completely broken (unless there's some weird bug in the code). Well, it seemed like a good idea at the time :-) I'll remove this 'feature', it's really not worth our time to try and make this work for these old cards. I wonder if you are able to test the ISA radio-sf16fmr2.c driver? I'm not sure if you have the hardware, but since I changed this driver to use the proper isa kernel framework I'd like to have this tested if possible. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
