On 11/22/11, Michael Krufky <mkru...@linuxtv.org> wrote:
> Thank you, Manu... After the Linux Kernel Summit in Prague, I had
> intentions of solving this exact problem, but you did it first -- good
> job!
>
> I have reviewed the patch to the tda18271 driver, and the changes make
> good sense to me. I have one question, however:
>
> Perhaps my eyes have overlooked something -- I fail to see any code
> that defines the new "set_state" callback or any code that calls this
> new callback within dvb-core (assuming dvb_frontend.c) I also can't
> find the structure declaration of the "tuner_state" struct... ... is
> this patch missing from your series, or did I just overlook it?
I guess more like that. The data structure existed for quite a long
while in dvb_frontend.h and hence you don't find any new changes. Only
delivery and modulation added to it.
>
> That missing patch is what interests me most. Once I can see that
> missing code, I'd like to begin discussion on whether we actually need
> the additional callback, or if it can simply be handled by the
> set_params call. Likewise, I'm not exactly sure why we need this
> affional "struct tuner_state" ... Perhaps the answer will be
> self-explanatory once I see the code - maybe no discussion is
> necessary :-P
>
> But this does look good to me so far. I'd be happy to provide my
> "reviewed-by" tag once I can see the missing code mentioned above.
The callback is used from within a demodulator context as usual and hence.
eg:
/* program tuner */
- if (fe->ops.tuner_ops.set_params)
- fe->ops.tuner_ops.set_params(fe, params);
+ tstate.delsys = SYS_DVBC_ANNEX_AC;
+ tstate.frequency = c->frequency;
+
+ if (fe->ops.tuner_ops.set_state) {
+ fe->ops.tuner_ops.set_state(fe,
+ DVBFE_TUNER_DELSYS |
+ DVBFE_TUNER_FREQUENCY,
+ &tstate);
+ } else {
+ if (fe->ops.tuner_ops.set_params)
+ fe->ops.tuner_ops.set_params(fe, params);
+ }
Best Regards,
Manu
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