cx18: Testing needed on preliminary MPC-718 support - Acer aspire idea 500/510
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Quoted 13 lines · Andy Walls
Quoted 12 lines · Andy Walls
Quoted 9 lines · Steve Firth
I've de-lidded the MPC718 card and the chip set is as
below.Devices
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Connexant CX23418 MPEG 2 EncoderZarlink MT352/CG COFDM Demodulator
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Ugh. There is a linux driver for this chip, but it wants an initialization sequence of registers that are not publicly documented.
I think the MPC718 variants might use at least 3 different DVB-T
demodulators: Mitel/Zarlink MT352, Zarlink ZL10353, or some DiBcom chip supported by one of the dib7000x drivers. It looks like you might have an older card.
Steve,
I have a preliminary set of patches for the MPC-718 boards with an MT-352 demodulator here:
http://linuxtv.org/hg/~awalls/cx18-mpc718/
Please give it a test.
Some warnings:
1. Do not test DVB-T and analog from the antenna at the same time. Both sides of the card try to use the XC3028 silicon tuner for tuning, and the cx18 driver currently has no interlock to stop bad things from happening if you try both at once.
2. Test with 8 MHz DVB-T channels in UHF. Those should be least likely to introduce any unknowns by the xc2028 and mt352 drivers.
3. I mucked with the analog set up of the card too. Let me know if anything is better or newly broken.
4. Test with v4l2-ctl, ivtv-tune, and mplayer. Don't test with MythTV - too many variables.
5. These patches will fail to load DVB-T, if you have an MPC718 with a ZL10353 or DiBcom demodulator.
6. These patches are for testing only. The last patch in the set has dubious origin (an MT352 init sequence pulled out of the Windows driver, but slightly modified by me from what I could figure out). I will likely have to split this sequence out into an annoying cx18-mpc718-mt352.fw file in the final version of this patch, for inclusion into the kernel.
Regards,
Andy
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XCeive 3028 Hybrid Tuner + analog demodulator
Hynix HY5DU283333B DDR RAM
Cirrus(?) 5340 CZZ Audio
A->DRegards,
Andy