On 23-02-12 23:02, Hans-Frieder Vogt wrote:
Am Donnerstag, 23. Februar 2012 schrieb Oliver Schinagl:
Hi Hans,
I also have an AF9035 based device, the Asus 3100 Mini Plus. It has an
AF9035B demodulator and uses an FCI2580 tuner. I've used the driver
supplied by afa in the past, but haven't tested it in the last few
months. I have a git repository for that driver at
http://git.schinagl.nl/AF903x_SRC.git (it is also linked from
http://www.linuxtv.org/wiki/index.php/Asus_U3100_Mini_plus_DVB-T).
So when you say it is also coupled with the same tuner, that's not true
:) With that driver there where a bunch of other tuners that are used
with this chip. I think the Asus EEEPC supported a USB dvb tuner at some
point and there are reverences in that code for it.
As of the legality of the code, that is uncertain. The module (compiled
from all these sources) is very specifically marked as GPL. Most
headers/source files have no copyright notice at all, some however do,
but no license in it.
I asked about afa-tech and there driver status a while ago, but I guess
there is no news as of yet?
To summarize, I would love to test your driver, and I think i can code
something up for my tuner, once these are split?
Oliver
On 22-02-12 23:20, Hans-Frieder Vogt wrote:
I have written a driver for the AF9035& AF9033 (called af903x), based on
the various drivers and information floating around for these chips.
Currently, my driver only supports the devices that I am able to test.
These are
- Terratec T5 Ver.2 (also known as T6)
- Avermedia Volar HD Nano (A867)
The driver supports:
- diversity and dual tuner (when the first frontend is used, it is in
diversity mode, when two frontends are used in dual tuner mode)
- multiple devices
- pid filtering
- remote control in NEC and RC-6 mode (currently not switchable, but
depending on device)
- support for kernel 3.1, 3.2 and 3.3 series
I have not tried to split the driver in a DVB-T receiver (af9035) and a
frontend (af9033), because I do not see the sense in doing that for a
demodulator, that seems to be always used in combination with the very
same receiver.
The patch is split in three parts:
Patch 1: support for tuner fitipower FC0012
Patch 2: basic driver
Patch 3: firmware
Hans-Frieder Vogt e-mail: hfvogt<at> gmx .dot. net
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Hi Oliver,
the AF9035B is in fact a DVB-T demodulator with an integrated USB interface +
further interfaces (I erroneously called it receiver). It needs a tuner to be
a full DVB-T stick (it seems that the it9135 is basically the AF9035 + an
integrated tuner).
the Terratec T5 Rev. 2 and T6 consists of an AF9035B, an AF9033B (Second
demodulator) and dual FC0012 tuners
the Avermedia Volar HD Nano (A867) uses an AF9035B and an Mxl5007t tuner
your Asus 3100 mini uses the FCI2580 tuner.
If there is a driver for the FCI2580 tuner then it is not a big issue to make
it usable with the af903x driver.
The driver is 'available' but in the AF903x_SRC package. If I would take
the endevour into writing a driver for the FCI2580, what driver would be
best suited as template you reccon?
I know of these Afatech drivers, but the main disadvantage of them is in my
eyes that they
- have a lot of useless and unused code
- define own error codes (instead of using the standard error codes)
- have a compiled in firmware
This bit I don't understand. I have not found any binary image in the
source tree at all. If the firmware is compiled from the sources, it is
compiled into the driver, and not uploaded to the stick when plugged in.
The other firmware is as mentioned the infrared receive 'table', which
provides some mapping I guess?
- have all supported tuners directly compiled in, which means that they
prevent tuner support to be shared between various drivers
So, you see, there are good reasons to write a new driver for these devices.
The point with the legality: I agree that the AF903X_SRC driver is unclear in
that respect. The glue code (under src) is explicitly marked as GPL, but the
api code (under api) isn't marked.
Luckily, there is the it9135-driver from Jason Dong which is clearly GPL and
which uses the same functions. Therefore there is effectivly example code from
Afatech/Ite technology available that is under GPL.
Cheers,
Hans-Frieder Vogt e-mail: hfvogt<at> gmx .dot. net
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