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   JEEB: hi. any tips if I want to start hacking at making a proper driver for a USB ISDB-T receiver for which I already have a command line app that seems to feed the thing a firmware + be able to tune?
   <br> (also any recommendations for a cheap modulator for a test signal while I'm outside of ISDB regions?)
   iive: JEEB, btw, is it usb dongle?
   JEEB: yes
   <br> Keian FSUSB2i
   <br> officially KTV-FSMINI
   iive: is that program something you wrote in C, or binary you got from manufacturer?
   JEEB: it's an open source binary by someone who RE'd the windows driver I would guess
   iive: mchehab, crope ^
   <br> JEEB, do you know what tuners and other chips does this device use. aka some of them might already be supported by the kernel for other devices.
   JEEB: it9175 is what is mentioned in the USB/FW/demod code
   <br> so I would guess that is the name of the chip
   <br> https://github.com/jeeb/recfsusb2i/tree/master/src
   iive: sound familiar
   <br> there is already support for it9135 tuner.
   <br> linux-source/drivers/media/tuners/it913x.[ch] by crope  :)
   <br> JEEB, hang around in this channel, developers would eventually come. but it might also be after the weekend.
   JEEB: sure
   iive: looking at the older tuner source code might be good idea. the new one might not be so different.
   JEEB: I was more interested in the USB DVB device generic framework stuff. where I could just start playing with doing the same things as the cli app :)
   iive: most dongle are based on some common chipsets, e.g. em28xx
   <br> it does the usb and i2c/spi/ etc communication part.
   <br> hum, the code in the repo, some parts are gpl v3, kernel is v2 only. some do not list license...
   JEEB: which is why I did not say I would copy code
   <br> according to readme it's GPLv3, supposedly
   <br> although if the person is poked it's likely he could relicense it if it's his own code
   b-rad: check out drivers/media/dvb-usb-v2/af9035 bridge
   <br> (with extra usb in path)
   JEEB: cheers, will check