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stb0899/stb6100 tuning problems

DISCUSSION Issa Gorissen 2 participants 3 messages Apr 23, 2011 – Apr 24, 2011 Media (V4L/DVB)

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#0 lore raw

Hi,

Running kernel 2.6.39rc4. I've got trouble with tuning some transponders on Hotbird 13°E with a TT S2-3200.
The transponders have been emitting DVB-S until end of march when they now emit DVB-S2 signals. They are:
- 11681.00H 27500 3/4 8psk nid:319 tid:15900 on Hotbird 6
- 12692.00H 27500 3/4 8psk nid:319 tid:9900 on Hotbird 9

[1] https://patchwork.kernel.org/patch/244201/
[2] http://www.mail-archive.com/[email protected]/msg09214.html

1) Patch [2] is merged into kernel 2.6.39rc4. Using scan-s2, I get no service available.

2) I applied patch [1] and still could not get any service with scan-s2 from those transponders.

3) I *reverted* patch[2] and now scan-s2 returns partial results. scan-s2 can tune onto the transponder on Hotbird 6 really quick and gives back the full services list.
But I have to run scan-s2 with scan iterations count set to as high as 100 to be able to get results from the transponder on Hotbird 9.

When those transponders were emitting in DVB-S, I had no problem at all.

Can someone try the same thing on those transponders and report please ?

Thx
--
Issa

#1 lore raw
Quoted 26 lines · On Sat, 23 Apr 2011 22:55:27 +0200 Issa Gorissen <[email protected]> wrote:

Hi,

Running kernel 2.6.39rc4. I've got trouble with tuning some transponders on Hotbird 13°E with a TT S2-3200.
The transponders have been emitting DVB-S until end of march when they now emit DVB-S2 signals. They are:
- 11681.00H 27500 3/4 8psk nid:319 tid:15900 on Hotbird 6
- 12692.00H 27500 3/4 8psk nid:319 tid:9900 on Hotbird 9

[1] https://patchwork.kernel.org/patch/244201/
[2]
http://www.mail-archive.com/[email protected]/msg09214.html

1) Patch [2] is merged into kernel 2.6.39rc4. Using scan-s2, I get no service available.

2) I applied patch [1] and still could not get any service with scan-s2 from those transponders.

3) I *reverted* patch[2] and now scan-s2 returns partial results. scan-s2 can tune onto the transponder on Hotbird 6 really quick and gives back the full services list.
But I have to run scan-s2 with scan iterations count set to as high as 100 to be able to get results from the transponder on Hotbird 9.

Quoted 5 lines

When those transponders were emitting in DVB-S, I had no problem at all.

Can someone try the same thing on those transponders and report please ?

As mentioned before, try to use [1] + [2] + following patch. I would expect this to be working. Please confirm.

linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-04-24 07:39:06.000000000 +0000 renamed from linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-02-26 06:44:11.000000000 +0000 +2 -2
@@ -1426,9 +1426,9 @@ static void stb0899_set_iterations(struc
        if (iter_scale > config->ldpc_max_iter)
                iter_scale = config->ldpc_max_iter;
 
-       reg = STB0899_READ_S2REG(STB0899_S2DEMOD, MAX_ITER);
+       reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
        STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
-       stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
+       stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
 }
 
 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
#2 lore raw
Quoted 41 lines · Steffen Barszus
Quoted 26 lines · On Sat, 23 Apr 2011 22:55:27 +0200 Issa Gorissen <[email protected]> wrote:

Hi,

Running kernel 2.6.39rc4. I've got trouble with tuning some transponders on Hotbird 13°E with a TT S2-3200.
The transponders have been emitting DVB-S until end of march when they now emit DVB-S2 signals. They are:
- 11681.00H 27500 3/4 8psk nid:319 tid:15900 on Hotbird 6
- 12692.00H 27500 3/4 8psk nid:319 tid:9900 on Hotbird 9

[1] https://patchwork.kernel.org/patch/244201/
[2]
http://www.mail-archive.com/[email protected]/msg09214.html

1) Patch [2] is merged into kernel 2.6.39rc4. Using scan-s2, I get no service available.

2) I applied patch [1] and still could not get any service with scan-s2 from those transponders.

3) I *reverted* patch[2] and now scan-s2 returns partial results. scan-s2 can tune onto the transponder on Hotbird 6 really quick and gives back the full services list.
But I have to run scan-s2 with scan iterations count set to as high as 100 to be able to get results from the transponder on Hotbird 9.

Quoted 5 lines

When those transponders were emitting in DVB-S, I had no problem at all.

Can someone try the same thing on those transponders and report please ?

As mentioned before, try to use [1] + [2] + following patch. I would expect this to be working. Please confirm.

linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-04-24 07:39:06.000000000 +0000 renamed from linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-02-26 06:44:11.000000000 +0000 +0 -0
@@ -1426,9 +1426,9 @@ static void stb0899_set_iterations(struc
        if (iter_scale > config->ldpc_max_iter)

linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-04-24 07:39:06.000000000 +0000 static void stb0899_set_iterations(struc · line 1434

Quoted 10 lines
linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-04-24 07:39:06.000000000 +0000 renamed from linux/drivers/media/dvb/frontends/stb0899_drv.c 2011-02-26 06:44:11.000000000 +0000 +2 -2
                iter_scale = config->ldpc_max_iter;
 
-       reg = STB0899_READ_S2REG(STB0899_S2DEMOD, MAX_ITER);
+       reg = STB0899_READ_S2REG(STB0899_S2FEC, MAX_ITER);
        STB0899_SETFIELD_VAL(MAX_ITERATIONS, reg, iter_scale);
-       stb0899_write_s2reg(state, STB0899_S2DEMOD, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
+       stb0899_write_s2reg(state, STB0899_S2FEC, STB0899_BASE_MAX_ITER, STB0899_OFF0_MAX_ITER, reg);
 }
 
 static enum dvbfe_search stb0899_search(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)

Thx for your reply.

Applied [1] + [2] + your path.

Unfortunately, this does not work for me. scan-s2 can tune only on the 1st of those 3 transponders on HB13E

S1 12654000 H 27500000 3/4

S2 12692000 H 27500000  3/4 35   8PSK
S2 11681000 H 27500000  3/4 35   8PSK

Please note that I can tune quick/fast on those 3 transponders with a ngene based card. szap will report a signal of 60% and snr of 70% for them. Problem is the CI support does not work for me.

I am wondering if there is a dvb-s2 card with ci support which flawlessly works on linux... ?