[linux-dvb] Re: skystar2 dvb-t

[Niklas Peinecke <peinecke@gdv.uni-hannover.de>]

Holger Waechtler wrote:
> MeDon wrote:
>
> > Hi,
> > we have Technisat SkyStar2 FlexCopIIB(rev.195) in DVB-T version. It 
> > doesn't work. I guess it is because frontend. The mt312 writes (in 
> > debug mode):
> >
> > Dec  3 01:17:26 cooler kernel: master_xfer: read error !
> > Dec  3 01:17:26 cooler kernel: message 2: flags=0x0, addr=0x3a, 
> > buf=0x85, len=48
> > 736
> > There's written on the one piece of card: GRUNDIG 29504-401.01 
> > 00000147 01 27031 and on one chip LSI L647818. We have disabled the 
> > piece of code in skystar2.c:
> >
> >                /* allow only the mt312 and stv0299 frontends to access 
> > the bus 
> > */                                                                      
> >                if ((msgs[i].addr != 0x0E) && (msgs[i].addr != 0x68) && 
> > (msgs[i].addr != 0x61) 
> > )                                                                       
> > {                                                                                                                                       
> >                    
> > up(&tmp->i2c_sem);                                                                                                                  
> >                                                                                                                                                        
> >                    return 
> > -EREMOTEIO;                                                                                                                  
> >                
> > }                                                                                                                                       
> > and tried grundig_29504-401 frontend module, but it failed. Syslog 
> > messages (both modules with debug enabled) are here:
> >
> > Dec  4 15:49:21 cooler kernel: drivers/media/dvb/b2c2/skystar2.c: 
> > FlexCopIIB(rev.195) chip found
> > Dec  4 15:49:21 cooler kernel: sram_detect_for_flex2:
> > Dec  4 15:49:21 cooler kernel: sram_detect_for_flex2: tmp2 = 0
> > Dec  4 15:49:21 cooler kernel: sram_detect_for_flex2: tmp3 = 1
> > Dec  4 15:49:21 cooler kernel: sram_test_location: mask = 20000, addr 
> > = 18000
> > Dec  4 15:49:21 cooler kernel: sram_init: dw_sram_type = 20000
> > Dec  4 15:49:21 cooler kernel: sram_test_location: wrote 0xA5, read 0x4f
> > Dec  4 15:49:21 cooler kernel: sram_test_location: mask = 0, addr = 10000
> > Dec  4 15:49:21 cooler kernel: sram_init: dw_sram_type = 0
> > Dec  4 15:49:21 cooler kernel: sram_test_location: wrote 0xA5, read 0x4f
> > Dec  4 15:49:21 cooler kernel: sram_test_location: mask = 10000, addr = 0
> > Dec  4 15:49:21 cooler kernel: sram_init: dw_sram_type = 10000
> > Dec  4 15:49:21 cooler kernel: sram_test_location: wrote 0xA5, read 0xa5
> > Dec  4 15:49:21 cooler kernel: sram_test_location: wrote 0x5A, read 0x5a
> > Dec  4 15:49:21 cooler kernel: sram_init: dw_sram_type = 10000
> > Dec  4 15:49:21 cooler kernel: sram_detect_for_flex2: sram size = 32K
> > Dec  4 15:49:21 cooler kernel: driver_initialize sram length = 32768, 
> > sram type= 10000
> > Dec  4 15:49:21 cooler kernel: flex_i2c_read:
> > Dec  4 15:49:21 cooler last message repeated 3 times
> > Dec  4 15:49:21 cooler kernel: DVB: registering new adapter (Technisat 
> > SkyStar2 driver).
> > Dec  4 15:49:54 cooler kernel: master_xfer: 1 messages to transfer
> > Dec  4 15:49:54 cooler kernel: message 0: flags=0x0, addr=0x0, 
> > buf=0x6, len=1 Dec  4 15:49:54 cooler kernel: no response on 
> > reset_and_configure() broadcast, bailing out...
> >
> >
> > Thank you for your help to make this stuff working.
>
> There have been some mails a while ago on this list discussing this. The 
> current skystar i2c driver hangs when i2c transfers go to non-existent 
> o2c adresses. See skystar2.c in dvb-kernel, around line 306. There you 
> need to add the i2c addresses fot the L64781 and the used PLL. Please 
> let us know which changes are actually required, it would be nice if you 
> can fix this problem properly and prepare a patch we can include in 
> future driver versions...
>
> Holger
Hmm, Skystar2 DVB-T? Isn't this actually an Airstar2? AFAIK the tuner 
should be stv0297-based, so I do dont expect this to work even when one 
fixes the i2c, but I could be wrong on this...

Niklas



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