Hi,
I bought this card and after quite a few late nights,
I figured
which card and tuner settings work for the card.
Making LIRC
work took more time. I have summarized what I had to
do to make
it work for benefit of anyone interested. The
distribution was
Redhat9.0, lirc version was lirc-0.7.0pre6.
The patch was not included in the lirc distribution as
it may
potentially not work for original card 78.
Note that the this and the latest version of lirc
(lirc-0.7.0pre7)
did not compile on Fedora2.
Card and tuner
==============
I absolutely had no documentation; so it took me some
time to get
the sound working.
I have reasons to believe that this card is a clone of
KWORLD/JETWAY
(bttv card = 78). Their physical appearance were same
and finally
when I got lirc working, the remotes seemed to be
same.
I had to put the following lines in the
/etc/modules.conf file:
option bttv card=78 tuner=12
I tried with other tuner settings but 12 seems to work
best. But
still I do not seem to be getting few channels. If you
ever find a
better setting let me know.
Remote
======
I downloaded lirc code from www.lirc.org.
Choosing KWORLD in lirc configuration, however, did
not work.
It appears that I need to toggle gpio pin
corresponding to value
0x008000 to read IR code from the decoder. I got the
hint from
code I saw in girder project: (Generic BT8x8 plugin
from
www.girder.ln/developer.php). I modified lirc_gpio
accordingly
and it worked.
irrecord did not work for me since it could find a
"gap". So I
made a temporary edit in that as well just to record
the codes.
Finally, the lircd.conf for KWORLD almost worked. The
only change
that I had to make is that I commented out fm-freq+
and fm-freq-.
These have the same code as ch+ and ch- but occur
first in the
conf file. xawtv would get fm-freq+ when I press ch+
and would
not respond!
I am attaching the diff of lirc_gpio.c and irrecord.
Hope it helps somebody.
------------------------------------------------------------------
diff -r lirc-0.7.0pre6_fix/daemons/irrecord.c
lirc-0.7.0pre6/daemons/irrecord.c
479c479
< /* if(!get_gap_length(&remote))
---
> if(!get_gap_length(&remote))
488d487
< */
diff -r
lirc-0.7.0pre6_fix/drivers/lirc_gpio/lirc_gpio.c
lirc-0.7.0pre6/drivers/lirc_gpio/lirc_gpio.c
125c125
< {BTTV_KWORLD, 0, 0x00007f00,
0x00008000, 0x0004000, 0, 0, 12, 32},
---
> {BTTV_KWORLD, 0, 0x00007f00,
0, 0x0004000, 0, 0, 12, 32},
324,331d323
< #ifdef BTTV_KWORLD
< if (gpio_enable) {
< if(bttv_gpio_enable(card, gpio_enable,
gpio_enable)) {
< printk(LOGHEAD "gpio_enable
failure\n", minor);
< return -EIO;
< }
< }
< #endif
336,351d327
< #ifdef BTTV_KWORLD
< if((code & 0xc000) == 0) {
< /* Set the right gpio bit */
< if(bttv_write_gpio(card, gpio_enable,
gpio_enable)) {
< printk(LOGHEAD
"write_gpio(set) failure\n", minor);
< return -EIO;
< }
< }
< else {
< /* Clear the right gpio bit */
< if(bttv_write_gpio(card, gpio_enable,
~gpio_enable)) {
< printk(LOGHEAD
"write_gpio(clear) failure\n", minor);
< return -EIO;
< }
< }
< #endif
---------------------------------------------------------------------------
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