Adds Terratec H7 Rev. 4 with USB id 0ccd:10a5 to DVBSky driver.
Signed-off-by: NErik Andresen <erik@vontaene.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Those two came from dvb_register_adapter cut-and-paste:

	.//drivers/media/dvb-core/dvbdev.h:199: warning: Excess function parameter 'device' description in 'dvb_register_device'
	.//drivers/media/dvb-core/dvbdev.h:199: warning: Excess function parameter 'adapter_nums' description in 'dvb_register_device'

Remove them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Document the most relevant functions and data structs for
developers that are working with the DVB subsystem.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

That struct is used on every DVB Front End driver, as it
contains what's needed to register/use a frontend at the
Kernel.

Document it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

Most of the parameters here are already well defined at
the userspace documentation. Yet, it is good to add some
documentation, for the developers to be sure that they
are the same as the ones at userspace API.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

This is one of the most important functions of the DVB
frontend, containing the logic needed to set the parameters
at the demux and to send commands via SEC.

Document it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

The dvb_frontend.c core defines a FE_ALGO_HW symbol that it is
never used. Also, both cx24123 returns 1 to get_algo() callback
instead of using DVBFE_ALGO_HW.

Probably, those are some left overs from some code cleanup.

Let's stop returning magic numbers and use the proper macro
value.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

Add documentation for struct analog_demod_info and
struct analog_demod_ops.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

The struct dvb_tuner_ops contains lots of callbacks used
by tuners. Document them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

That struct inside dvb-frontend.h stores some parameters
from V4L2 API (videodev2.h), in order to be used by the
hybrid analog/digital TV tuners.

Document it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

This enum is not used anymore, as drivers use the
modulation definitions from the public API. It is probably
a left over from some DVB core cleanup.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

Despite being used everywhere at DVB frontends, the
struct dvb_tuner_info were never documented.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

Add Documentation for dvb_frontend_tune_settings struct.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

There are already some comments at dvb_ringbuffer.h that are ready
for DocBook, although not properly formatted.

Convert them, fix some issues and add this file to
the device-drivers DocBook.

While here, put multi-line comments on the right format.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

There are already some comments at dvb_math.h that are ready
for DocBook, although not properly formatted.

Convert them, fix some issues and add this file to
the device-drivers DocBook.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

There are already some comments at dvb_frontend.h that are ready
for DocBook, although not properly formatted.

Convert them, and add this file to the device-drivers DocBook.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

There are already some tags at dvb_ca_en50221.h, but using a
different format. Convert them, fix a few entries and add
to the device-drivers DocBook.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

There are lots of docbook marks at the media subsystem, but
those aren't used.

Add the core headers/code in order to start generating docs.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>

Use eth_zero_addr to assign the zero address to the given address
array instead of memset when second argument is address of zero.

The Coccinelle semantic patch that makes this change is as follows:

// <smpl>
@eth_zero_addr@
expression e;
@@

-memset(e,0x00,ETH_ALEN);
+eth_zero_addr(e);
// </smpl>
Signed-off-by: NVaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Quite a few of the ->diseqc_send_master_cmd() implementations don't
check cmd->msg_len so it can lead to memory corruption.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

struct timeval uses a 32-bit seconds representation which will
overflow in the year 2038 and beyond. This patch replaces
the usage of struct timeval with ktime_t which is a 64-bit
timestamp and is year 2038 safe.
This patch is part of a larger attempt to remove all instances
of 32-bit timekeeping variables (timeval, timespec, time_t)
which are not year 2038 safe, from the kernel.

[mchehab@osg.samsung.com: add a missing parenthesis, breaking compilation]
Suggested-by: NArnd Bergmann <arndb@arndb.de>
Signed-off-by: NTina Ruchandani <ruchandani.tina@gmail.com>
Reviewed-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

The DVB API was originally defined using typedefs. This is against
Kernel CodingStyle, and there's no good usage here. While we can't
remove its usage on userspace, we can avoid its usage in Kernelspace.

So, let's do it.

This patch was generated by this shell script:

	for j in $(grep typedef include/uapi/linux/dvb/frontend.h |cut -d' ' -f 3); do for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f); do sed "s,${j}_t,enum $j," <$i >a && mv a $i; done; done

While here, make CodingStyle fixes on the affected lines.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> # for drivers/media/firewire/*

Frontend bandwidth calculation overflows on very high DVB-S/S2
symbol rates. Use mult_frac() macro in order to keep calculation
correct.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Add Leadtek WinFast DTV2000DS Plus device based on Realtek RTL2832U.

I have not tested the remote, but it is the Y04G0051 model.
Signed-off-by: NChristian Dale <kernel@techmunk.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

ID 1b80:d3a4 Afatech

Simply added the PID (0xd3a4) of this DVB-T USB device to the list of rtl2832u-supported devices. VID (0x1b80) is same as KWORLD2.

Tested and verified to work in amd64 with kernels 3.13.0 and 3.16.0.
Signed-off-by: NDimitris Lampridis <dlampridis@logikonlabs.com>
Reviewed-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

The functions "dvb_unregister_device" and "kfree" could still be called
by the dvb_ca_en50221_init() function in the case that a previous resource
allocation failed.

* Corresponding details could be improved by adjustments for jump targets.

* Let us delete also an unnecessary check for the variable "ca" there.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

The dvb_unregister_device() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

TechnoTrend TT-connect S2-4600 is a USB2.0 DVB-S/S2 tuner using the popular
Montage M88DS3103/M88TS2022 demod/tuner.

The demodulator needs a firmware. Antti posted a firmware when releasing
support for PCTV 461e, available here:
http://palosaari.fi/linux/v4l-dvb/firmware/M88DS3103/Signed-off-by: NOlli Salonen <olli.salonen@iki.fi>
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Now that there are no more users kill dev_rebuild_header and all of it's
implementations.

This is long overdue.
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is really a simple function, but using it avoids to have
if's inside the drivers.

Also, the kABI becomes a little more clearer.

This shouldn't generate any overhead, and the type check
will happen when compiling with MC DVB enabled.

So, let's do it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Instead of using media_dev argument for dvb_create_media_graph(),
use the adapter.

That allows to create a stub for this function, if compiled
without DVB support, avoiding to add extra if's at the drivers.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Prefix all DVB media controller entities with "dvb-" and use dash
instead of underline at the names.
Requested-by: NHans Verkuil <hans.verkuil@cisco.com>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

if CONFIG_MEDIA_CONTROLLER_DVB is not selected, it is now
producing this warning:

drivers/media/dvb-core/dvb_frontend.c: In function ‘dvb_frontend_thread’:
drivers/media/dvb-core/dvb_frontend.c:695:6: warning: unused variable ‘ret’ [-Wunused-variable]
  int ret;
      ^
Reported-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

The logic there tries to start the media entity even if it
doesn't exist, causing this bug:

	[  314.356162] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
	[  314.356202] IP: [<ffffffffa02ef74c>] media_entity_pipeline_start+0x1c/0x390 [media]
Reported-by: NGert-Jan van der Stroom <gjstroom@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

While the DVB thread is running, the media pipeline should be
streaming. This should prevent any attempt of using the analog
TV while digital TV is working, and vice-versa.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

If the dvb frontend thread starts, the tuner should be switched
to the frontend. Add a code that ensures that this will happen,
using the media controller.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

For now, let's keep the DVB-specific media controller links enabled
by default. On most devices, this is fixed anyway, so no big issue.

Ok, the demux actually have dynamic links based on the filters, but
we don't represent them yet, as the media controller currently lacks
the capability of dynamically create/delete entities.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

We need to create a DVB graph, linking the several DVB devnodes.

Add such function. Please notice that this helper function
doesn't take into account devices with multiple DVB adapters
and frontends.

For devices with multiple adapters, they should either create two
different media controller instances or to improve this function
to take the adapter ID into account.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

While on some devices the tuner is bound inside the frontend,
other devices use a separate subdevice for it.

So, in order to be more generic, better to map it with two
pads.

That will allows to use the media controller to lock the tuner
between the DVB and the V4L2 sub-drivers, on hybrid devices.

While here, change the logic to use pad 0 as sink for devices
with both sink and source pads.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

We want to represent the links between the several DVB devnodes,
so let's create PADs for them.

The DVB net devnode is a different matter, as it is not related
to the media stream, but with network. So, at least for now, let's
not add any pad for it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>