On 18.04.2012 20:18, Thomas Mair wrote:
I have been working on the driver over the past days and been making
some progress. Right now I am stuck with a small problem that I have
no idea how to deal with.
It seems that the fc0012 tuner supports V-Band and U-Band. To switch
between those modes a GPIO output value needs to be changed. In the
original Realtek driver this is done at the beginning of the
set_parameters callback. Is there a different callback that can be
used for this or is it ok to write a RTL2832u register from the
demodulator code?
Aah, I suspect it is antenna switch or LNA GPIO. You don't say what is
meaning of that GPIO...
If it is FC0012 input, which I think it is not, then you should use FE
callback (named as callback too) with DVB_FRONTEND_COMPONENT_TUNER
param. But I suspect it is not issue.
So lets introduce another solution. It is fe_ioctl_override. Use it.
You will find good examples both cases using following GIT greps
git grep fe_ioctl_override drivers/media
git grep FRONTEND_COMPONENT
Antti
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