I am using the alps_tdlb7.c driver with my DVB-T card. It works quite good now adays, but I still have intermittent reception problems.
I looked at the sp887x.c driver. It uses a lot more sp887x registers than the alps_tdlb7 driver, many which are undocumented in the brief and sparse sp8870 documentation i have. It for example sets up AGC values and frequency offsets, which the alps_tldb7 doesn't. I believe the alps_tldb7 driver is made mainly by i2c snooping, and it uses almost only documented register.
Is the sp887x driver made with some actual documentation? Is the sp887x code supposed to be able to drive a sp8870? Who wrote it?
/ragge
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