Despite its name, tuner-simple has a complex logic to set freqs ;)

Basically, it can be called by two different ways: via set_params()
or via calc_regs() callbacks. Both are bound to the DVBv3 API.
Also, set_params internally calls calc_regs().

In order to get rid of DVBv3 params at set_params(), it shouldn't
call calc_regs() anymore. The code duplication is very small,
as most of the code there is just to check for invalid parameters.

With regards to calc_regs(), it should still trust on bandwidth and
frequency parameters passed via DVBv3, until a later patch fixes
it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

This standard is not properly documented, but its settings are at
the tda18271dd driver, and are somewhat obvious, as they follow
the same logic as DVB-T 7MHz.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

There is a bug on mxl5005s logic: when the bandwidth changes, but using
the same delivery system, the code discard the set_params()
reconfiguration request.

This was happening because, in the previous coding, the bandwidth
calculus were after the check for delivery system changes.

The previous patch changed the logic to estimate the bandwidth to
happend together with the changes at the delivery system.

So, with a one-statement change, it is possible to make the tuner to
reconfigure, in order to adjust to bandwidth changes. this will
likely fix issues on countries that use 7MHz/8MHz DVB-T channels.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of using DVBv3 parameters, rely on DVBv5 parameters to
set the tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

This driver implements a fake get_bandwidth() callback. In
reallity, the tuner driver won't adjust its low-pass
filter based on a bandwidth, and were just providing a fake
method for demods to read whatever was "set".

This code is useless, as none of the drivers that use
this tuner seems to require a get_bandwidth() callback.

While here, convert set_params to use the DVBv5 way to pass
parameters to tuners.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

This driver implements a fake get_bandwidth() callback. In
reallity, the tuner driver won't adjust its low-pass
filter based on a bandwidth, and were just providing a fake
method for demods to read whatever was "set".

This code is useless, as none of the drivers that use
this tuner seems to require a get_bandwidth() callback.

While here, convert set_params to use the DVBv5 way to pass
parameters to tuners.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

This driver implements a fake get_bandwidth() callback. In
reallity, the tuner driver won't adjust its low-pass
filter based on a bandwidth, and were just providing a fake
method for demods to read whatever was "set".

This code is useless, as none of the drivers that use
this tuner seems to require a get_bandwidth() callback.

While here, convert set_params to use the DVBv5 way to pass
parameters to tuners.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Instead of just estimating the bandwidth for DVB-C annex A/C,
also fill it at the core for ATSC and DVB-C annex B. This
simplifies the logic inside the tuners, as all non-satellite
tuners can just use c->bandwidth_hz for all supported
delivery systems.

It could make sense to latter use it also for satellite
systems, as several DVB-S drivers have their own calculus.
However, on DVB-S2 the bw estimation is a little more complex,
and the existing drivers have some optimized calculus for
bandwidth. So, let's not touch on it for now.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

SYS_DVBC_ANNEX_AC is an alias for SYS_DVBC_ANNEX_A. However,
the first one is incorrect, as not all devices support both.
So, replace its occurrences by the proper value (either
SYS_DVBC_ANNEX_A or both SYS_DVBC_ANNEX_A and SYS_DVBC_ANNEX_C).
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

dvb_register calls videobuf_dvb_register_bus, but if that returns
a failure the module will be unloaded without clearing the
value of core->gate_ctrl which will cause an oops in macros
called from video_open in cx88-video.c
Signed-off-by: David Fries <David@Fries.net>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Istvan Varga <istvan_v@mailbox.hu>
Cc: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

dprintk() dereferences "ir".  I'm not sure why gcc doesn't complain
about this.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>