problems with cx88 and PAL-Nc

Hello,

After many attempts, I finally made some progress with my Compro Videomate x50 (cx88 + xc2028). I added the necessary bits to a 'custom' callback function and I'm able to get the TV signal and change channels. However, I'm having a hard time trying to use PAL-Nc . At first, I thought it was a problem related with the tuner, but it also happens with S-Video. 

It works fine with PAL and NTSC, using TV as input or S-Video as input,. but when I set PAL-Nc as the norm this happens (Fedora 11, lastest v4l-dvb, S-Video input): 

cx88/0: cx2388x v4l2 driver version 0.0.7 loaded
cx8800 0000:04:01.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
cx88[0]: subsystem: 185b:e000, board: Compro VideoMate X50 [card=82,autodetected], frontend(s): 0
cx88[0]: TV tuner type 71, Radio tuner type 71
cx88[0]: cx88_reset
tuner 1-0061: chip found @ 0xc2 (cx88[0])
xc2028 1-0061: creating new instance
xc2028 1-0061: type set to XCeive xc2028/xc3028 tuner
xc2028 1-0061: destroying instance
xc2028 1-0061: creating new instance
xc2028 1-0061: type set to XCeive xc2028/xc3028 tuner
cx88[0]: Asking xc2028/3028 to load firmware xc3028-v27.fw
xc2028 1-0061: Error on line 1139: -6
cx88[0]/0: found at 0000:04:01.0, rev: 5, irq: 19, latency: 32, mmio: 0xf4000000
IRQ 19/cx88[0]: IRQF_DISABLED is not guaranteed on shared IRQs
cx88[0]/0: registered device video0 [v4l2]
cx88[0]/0: registered device vbi0
cx88[0]/0: registered device radio0
cx88[0]: set_tvnorm: "NTSC-M" fsc8=28636360 adc=28636363 vdec=28636360 db/dr=28636360/28636360
cx88[0]: set_pll:    MO_PLL_REG       0x00fffffe [old=0x00f15f18,freq=28636360]
cx88[0]: pll locked [pre=2,ofreq=28636360]
cx88[0]: set_tvnorm: MO_INPUT_FORMAT  0x00000001 [old=0x00000007]
cx88[0]: set_tvnorm: MO_OUTPUT_FORMAT 0x181f0008 [old=0x181f0000]
cx88[0]: set_tvnorm: MO_SCONV_REG     0x00020000 [old=0x00021f07]
cx88[0]: set_tvnorm: MO_SUB_STEP      0x00400000 [old=0x0043e0f8]
cx88[0]: set_tvnorm: MO_SUB_STEP_DR   0x00400000 [old=0x00538e38]
cx88[0]: set_tvnorm: MO_AGC_BURST     0x00007270 [old=0x00006d63,bdelay=114,agcdelay=112]
cx88[0]: set_tvnorm: MO_HTOTAL        0x0000038e [old=0x0000135a,htotal=910]
cx88[0]: set_scale: 320x240 [TB,NTSC-M]
cx88[0]: set_scale: hdelay  0x0038 (width 754)
cx88[0]: set_scale: hscale  0x15b3
cx88[0]: set_scale: hactive 0x0140
cx88[0]: set_scale: vdelay  0x0018
cx88[0]: set_scale: vscale  0x1e00
cx88[0]: set_scale: vactive 0x01e0
cx88[0]: set_scale: filter  0x80009
cx8800 0000:04:01.0: firmware: requesting xc3028-v27.fw
xc2028 1-0061: Loading 80 firmware images from xc3028-v27.fw, type: xc2028 firmware, ver 2.7
cx88[0]: Calling XC2028/3028 callback
xc2028 1-0061: Loading firmware for type=BASE (1), id 0000000000000000.
cx88[0]: Calling XC2028/3028 callback
xc2028 1-0061: Loading firmware for type=(0), id 000000000000b700.
SCODE (20000000), id 000000000000b700:
xc2028 1-0061: Loading SCODE for type=MONO SCODE HAS_IF_4320 (60008000), id 0000000000008000.
cx88[0]: Calling XC2028/3028 callback
cx88[0]: Calling XC2028/3028 callback
xc2028 1-0061: Loading firmware for type=BASE FM (401), id 0000000000000000.
cx88[0]: Calling XC2028/3028 callback
wlan0: no IPv6 routers present
xc2028 1-0061: Loading firmware for type=FM (400), id 0000000000000000.
cx88[0]: Calling XC2028/3028 callback
cx88[0]: set_tvnorm: "PAL-Nc" fsc8=28656448 adc=28636363 vdec=28656448 db/dr=28656448/28656448
cx88[0]: set_pll:    MO_PLL_REG       0x01002df7 [old=0x00fffffe,freq=28656448]
cx88[0]: pll locked [pre=2,ofreq=28656448]
cx88[0]: set_tvnorm: MO_INPUT_FORMAT  0x00000007 [old=0x00000001]
cx88[0]: set_tvnorm: MO_OUTPUT_FORMAT 0x1c1f0008 [old=0x181f0008]
cx88[0]: set_tvnorm: MO_SCONV_REG     0x0001ffa4 [old=0x00020000]
cx88[0]: set_tvnorm: MO_SUB_STEP      0x00400000 [old=0x00400000]
cx88[0]: set_tvnorm: MO_SUB_STEP_DR   0x00400000 [old=0x00400000]
cx88[0]: set_tvnorm: MO_AGC_BURST     0x00007270 [old=0x00007270,bdelay=114,agcdelay=112]
cx88[0]: set_tvnorm: MO_HTOTAL        0x00000395 [old=0x0000038e,htotal=917]
cx88[0]: set_scale: 320x240 [TB,PAL-Nc]
cx88[0]: set_scale: hdelay  0x0040 (width 922)
cx88[0]: set_scale: hscale  0x1e19
cx88[0]: set_scale: hactive 0x0140
cx88[0]: set_scale: vdelay  0x0024
cx88[0]: set_scale: vscale  0x1d34
cx88[0]: set_scale: vactive 0x0240
cx88[0]: set_scale: filter  0x80009
cx88[0]/0: tvaudio support needs work for this tv norm [PAL-Nc], sorry
cx88[0]: Calling XC2028/3028 callback
xc2028 1-0061: Loading firmware for type=BASE (1), id 0000000000000000.
cx88[0]: Calling XC2028/3028 callback
xc2028 1-0061: Loading firmware for type=(0), id 000000000000b700.
SCODE (20000000), id 000000000000b700:
xc2028 1-0061: Loading SCODE for type=MONO SCODE HAS_IF_4320 (60008000), id 0000000000008000.
cx88[0]: Calling XC2028/3028 callback
cx88[0]: set_scale: 720x576 [TB,PAL-Nc]
cx88[0]: set_scale: hdelay  0x0090 (width 922)
cx88[0]: set_scale: hscale  0x047d
cx88[0]: set_scale: hactive 0x02d0
cx88[0]: set_scale: vdelay  0x0024
cx88[0]: set_scale: vscale  0x0000
cx88[0]: set_scale: vactive 0x0240
cx88[0]: set_scale: filter  0x80008
cx88[0]: set_tvnorm: "PAL-Nc" fsc8=28656448 adc=28636363 vdec=28656448 db/dr=28656448/28656448
cx88[0]: set_pll:    MO_PLL_REG       0x01002df7 [old=0x01002df7,freq=28656448]
cx88[0]: pll locked [pre=2,ofreq=28656448]
cx88[0]: set_tvnorm: MO_INPUT_FORMAT  0x00000007 [old=0x00000007]
cx88[0]: set_tvnorm: MO_OUTPUT_FORMAT 0x1c1f0008 [old=0x1c1f0008]
cx88[0]: set_tvnorm: MO_SCONV_REG     0x0001ffa4 [old=0x0001ffa4]
cx88[0]: set_tvnorm: MO_SUB_STEP      0x00400000 [old=0x00400000]
cx88[0]: set_tvnorm: MO_SUB_STEP_DR   0x00400000 [old=0x00400000]
cx88[0]: set_tvnorm: MO_AGC_BURST     0x00007270 [old=0x00007270,bdelay=114,agcdelay=112]
cx88[0]: set_tvnorm: MO_HTOTAL        0x00000395 [old=0x00000395,htotal=917]
cx88[0]: set_scale: 320x240 [TB,PAL-Nc]
cx88[0]: set_scale: hdelay  0x0040 (width 922)
cx88[0]: set_scale: hscale  0x1e19
cx88[0]: set_scale: hactive 0x0140
cx88[0]: set_scale: vdelay  0x0024
cx88[0]: set_scale: vscale  0x1d34
cx88[0]: set_scale: vactive 0x0240
cx88[0]: set_scale: filter  0x82029
cx88[0]: Calling XC2028/3028 callback
cx88[0]: set_scale: 720x576 [TB,PAL-Nc]
cx88[0]: set_scale: hdelay  0x0090 (width 922)
cx88[0]: set_scale: hscale  0x047d
cx88[0]: set_scale: hactive 0x02d0
cx88[0]: set_scale: vdelay  0x0024
cx88[0]: set_scale: vscale  0x0000
cx88[0]: set_scale: vactive 0x0240
cx88[0]: set_scale: filter  0x82028
cx88[0]: video y / packed - dma channel status dump
cx88[0]:   cmds: initial risc: 0xcd9d6000
cx88[0]:   cmds: cdt base    : 0x00180440
cx88[0]:   cmds: cdt size    : 0x0000000c
cx88[0]:   cmds: iq base     : 0x00180400
cx88[0]:   cmds: iq size     : 0x00000010
cx88[0]:   cmds: risc pc     : 0xcd9d6034
cx88[0]:   cmds: iq wr ptr   : 0x0000010d
cx88[0]:   cmds: iq rd ptr   : 0x00000101
cx88[0]:   cmds: cdt current : 0x00000458
cx88[0]:   cmds: pci target  : 0x00000000
cx88[0]:   cmds: line / byte : 0x00000000
cx88[0]:   risc0: 0x80008000 [ sync resync count=0 ]
cx88[0]:   risc1: 0x1c0005a0 [ write sol eol count=1440 ]
cx88[0]:   risc2: 0xcd831000 [ arg #1 ]
cx88[0]:   risc3: 0x180004c0 [ write sol count=1216 ]
cx88[0]:   iq 0: 0x80008000 [ sync resync count=0 ]
cx88[0]:   iq 1: 0x1c0005a0 [ write sol eol count=1440 ]
cx88[0]:   iq 2: 0xcd831000 [ arg #1 ]
cx88[0]:   iq 3: 0x180004c0 [ write sol count=1216 ]
cx88[0]:   iq 4: 0xcd831b40 [ arg #1 ]
cx88[0]:   iq 5: 0x140000e0 [ write eol count=224 ]
cx88[0]:   iq 6: 0xcd832000 [ arg #1 ]
cx88[0]:   iq 7: 0x1c0005a0 [ write sol eol count=1440 ]
cx88[0]:   iq 8: 0xcd832680 [ arg #1 ]
cx88[0]:   iq 9: 0x1c0005a0 [ write sol eol count=1440 ]
cx88[0]:   iq a: 0xcd8331c0 [ arg #1 ]
cx88[0]:   iq b: 0x18000300 [ write sol count=768 ]
cx88[0]:   iq c: 0xcd833d00 [ arg #1 ]
cx88[0]:   iq d: 0x0031c040 [ INVALID 21 20 cnt0 resync 14 count=64 ]
cx88[0]:   iq e: 0x00000000 [ INVALID count=0 ]
cx88[0]:   iq f: 0x00000011 [ INVALID count=17 ]
cx88[0]: fifo: 0x00180c00 -> 0x183400
cx88[0]: ctrl: 0x00180400 -> 0x180460
cx88[0]:   ptr1_reg: 0x00181ce0
cx88[0]:   ptr2_reg: 0x00180478
cx88[0]:   cnt1_reg: 0x00000000
cx88[0]:   cnt2_reg: 0x00000000
cx88[0]/0: [ffff880121dfcc00/0] timeout - dma=0xcd9d6000
cx88[0]/0: [ffff880121dfde00/1] timeout - dma=0xcd91a000
cx88[0]/0: [ffff88011bdc8000/2] timeout - dma=0xcdb90000
cx88[0]/0: [ffff88011bdc9200/3] timeout - dma=0xcdb92000


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