On Monday 14 March 2011, Hans Verkuil wrote:
At Sat, 12 Mar 2011 19:52:39 +0100,
Hans Verkuil wrote:
On Saturday, March 12, 2011 19:19:00 Ondrej Zary wrote:
Hello, the radio-maestro driver is badly broken. It's intended to drive the
radio on
MediaForte ESS Maestro-based sound cards with integrated radio (like SF64-PCE2-04). But it conflicts with snd_es1968, ALSA driver for the
sound
chip itself.
If one driver is loaded, the other one does not work - because a
driver is
already registered for the PCI device (there is only one). This was
probably
broken by conversion of PCI probing in 2006: ttp://lkml.org/lkml/2005/12/31/93
How to fix it properly? Include radio functionality in snd-es1968 and
delete
radio-maestro?
Interesting. I don't know anyone among the video4linux developers who has this hardware, so the radio-maestro driver hasn't been tested in at least 6 or 7 years.
The proper fix would be to do it like the fm801.c alsa driver does: have the radio functionality as an i2c driver. In fact, it would not surprise me at all if you could use the tea575x-tuner.c driver (in sound/i2c/other) for the es1968 and delete the radio-maestro altogether.
I guess simply porting radio-maestro codes into snd-es1968 would work without much hustles, and it's a bit safe way to go for now; smaller changes have less chance for breakage, and as little people seem using this driver, it'd be better to take a safer option, IMO.
I assume someone has hardware since someone reported this breakage. So try to use tuner-tea575x for the es1968. It shouldn't be too difficult. Additional cleanup should probably wait until we find a tester for the fm801 as well.
I have the hardware - both ES1968 (SF64-PCE2-04) and FM801 cards (SF64-PCR) with these tuners. I remember fixing mute in tea5757x-tuner back in 2009 (testing it on SF64-PCR).
I don't like the idea to duplicate code.
I don't like that either. I've done a quick hack - copied radio support from fm801 and radio_bits_get() and radio_bits_set() from radio-maestro to es1968 and it seems to basically work. Now I just need some more time to finish it, then move everything good from radio-maestro to tea575x-tuner and delete radio-maestro.
IIRC, the TEA5757 tuner is also present on at least one ISA radio card - SF16-FMR2 (which I also have).