On 3/18/07, Darron Broad <darron@xxxxxxxx> wrote:
In message <1a297b360703180407r63b1e98dj561ae0a0abc8188f@xxxxxxxxxxxxxx>, "Manu Abraham" wrote:
>On 3/18/07, Darron Broad <darron@xxxxxxxx> wrote:
lo
>> >> 3. the delivery field has to be set
>> >>
>> >
>> >
>> >delivery system is set using DVBFE_SET_PARAMS, without which you
>> >wouldn't be able to tune to anything, because of the switch statement.
>>
>> the delivery type is indeed taken from the command line and used for
>> logic in the code, however, it's not passed to the driver.
>>
>
>It is. Take a look at the delsys switch in the stb0899 driver. The
>STB0899 depends on the delivery system and the Physical Layer
>parameters to decide which modulation to use.
>
>http://linuxtv.org/hg/~manu/stb0899-c5?f=d6f0bf7681d1;file=linux/drivers/media/dvb/frontends/stb0899_drv.c;style=
>gitweb
>The delivery system is sent to the driver, without which
>tuning/demodulation is impossible "on any multistandard demod"
specifically Steve's driver needs to the delivery system type
to be set when calling set_params.
it would appear from your code snippet that your driver is
setting internal state when peforming a query. surely this
is illogical behaviour.
Sorry, nope. Since the IOCTL is RW not R
#define DVBFE_GET_INFO _IOWR('o', 85, struct dvbfe_info)
HTH
Manu
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