Nobody is using this legacy call. Just remove it.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

V4L1 was removed. So, the code there is just dead code.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

By default, tda18271 tries to optimize I2C bus by updating all registers
at the same time. Unfortunately, some devices doesn't support it.

The current logic has a problem when small_i2c is equal to 8, since there
are some transfers using 11 + 1 bytes.

Fix the problem by enforcing the max size at the right place, and allows
reducing it to max = 3 + 1.
Acked-by: NMichael Krufky <mkrufky@kernellabs.com>
Acked-by: NSri Deevi <Srinivasa.Deevi@conexant.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Configure the tda18271 to use a smaller transaction size by default, which
works around some sort of i2c bug in the Polaris driver (which needs to be
debugged).

This should be safe for other boards (being in tuner-core means it will be
enabled by default), although testing needs to be done.
Signed-off-by: NDevin Heitmueller <dheitmueller@hauppauge.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Remove a hack in the tuner code for the mxb board. This hack is no longer
needed since the tuner is now probed on its correct address as specified
by the mxb driver.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Stanse found a memory leak in tuner_probe. It is not freed/assigned
on all paths. Fix that.
Signed-off-by: NJiri Slaby <jslaby@suse.cz>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Setting the tuner frequency at the same time as initializing the other devices
on the i2c bus can cause problems on devices that require firmware download or
extensive calibration proceduces during initialization.

This change allows us to prevent the tune at startup for devices that perform
better without it.
Signed-off-by: NMichael Krufky <mkrufky@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The variables are unsigned so the test `>= 0' is always true,
the `< 0' test always fails. In these cases the other part of
the test catches wrapped values.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Upcoming I2C v4l2_subdev drivers need a way to control the subdevice
power state from the core. This use case is already partially covered by
the tuner s_standby operation, but no way to explicitly come back from
the standby state is available.

Rename the tuner s_standby operation to core s_power, and fix tuner
drivers accordingly. The tuner core will call s_power(0) instead of
s_standby(). No explicit call to s_power(1) is required for tuners as
they are supposed to wake up from standby automatically.

[mchehab@redhat.com: CodingStyle fix]
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add support for NXP TDA18271 as a standalone tuner, allowing the use of
analog demodulators other than the Philips/NXP TDA829x.
Signed-off-by: NMichael Krufky <mkrufky@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This patch removes some remaining dead code.  Warning showed up in Hans
Verkuil's daily report after I committed hg changeset 7f2eea75118b.

Thanks to Michael Krufky for bringing the warning to my attention.

Cc: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: NDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Defer loading of the xc5000 firmware until it is actually needed.  This helps
on distros that have hald, which results in the device not being available
for use for around ten seconds in cases where the i2c bus is slow (such as
the HVR-950Q).  Also, the firmware load isn't really useful since we
immediately put the device to sleep afterward, which means a firmware reload
will be required anyway.
Signed-off-by: NDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Support for tuners with i2c addresses >= 0x65 is dropped since no tuners
with addresses in the range 0x65-0x6f have been found.

This patch removes addresses 0x65-0x6f from the list of tuner probe addresses,
it removes the kernel warning that warned if addresses in this range appeared,
and it removed a hack for the cx88 that is no longer needed now that the
tuner address range is reduced.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Originally the intention was to switch to the new style i2c API starting with
the introduction of the API in 2.6.22. However, the i2c_new_probed_device()
function has a lethal bug that wasn't fixed until 2.6.25. Or more accurately,
it was only fixed in the stable series of 2.6.25 and 2.6.26.

Given the fact that the new i2c API also changed starting with 2.6.26 (the
addition of i2c_device_id), it is easiest to switch APIs starting with
2.6.26.

This patch updates all the legacy code accordingly.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

s_std didn't belong in the tuner ops. Stricly speaking it should be part of
the video ops, but it is used by audio and tuner devices as well, so it is
more efficient to make it part of the core ops.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

s_standby is only used to put the tuner in powersaving mode, so move it
from core to tuner.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

All drivers that use the tuner module now use v4l2_subdev, so we can remove the
legacy code from this module.

Note that TUNER_SET_CONFIG is still called by tuner-simple.c, so we have
to handle it via a .command callback. There must be a better way to do this,
but for now this will work.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

No i2c modules are called with the V4L1 API anymore, so this can be removed.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Replace 'VIDIOC_' references in v4l i2c drivers by their new v4l2_subdev
callback names.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Drivers that don't set "config" directly in the set_type function will
end up with an invalid configuration value. Check that the value is sane,
otherwise initialize to 0.

Thanks to James Edward Geiger & Steven Toth for reporting this bug.

Cc: Steven Toth <stoth@linuxtv.org>
Cc: James Edward Geiger <james.e.geiger@gmail.com>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The xc5000 driver has a bug where the IF is always set to whatever the first
caller to dvb_attach() provides.  This fails when the device requires an IF
other than 5380 and the analog driver is loaded first through tuner-core
(which always supplies the hard-coded value of 5380).

Thanks to Michael Krufky <mkrufky@linuxtv.org> and Steven Toth
<stoth@linuxtv.org> for providing sample hardware, engineering level support,
and testing.
Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Since internal to v4l2 the ioctl prototype is the same regardless of it
being called through .ioctl or .unlocked_ioctl, we need to convert it all
to the long return type of unlocked_ioctl.

Thanks to Jean-Francois Moine for posting an initial patch for this and
thus bringing it to our attention.

Cc: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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

Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Dont pass devptr in xc5000_attach, dont store it in xc5000_priv.
This pointer is passed into the tuner_callback function, which always
expects a pointer to fe->dvb->priv or i2c_adapter->algo_data.

This prevents future possible bugs in new drivers, such as using a "devptr"
other that the standard fe->dvb->priv in a DVB driver.
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The functions in a header should not belong to another module. The prio functions
belong to v4l2-common.c, so move them to v4l2-common.h.

The ioctl functions belong to v4l2-ioctl.c, so create a new v4l2-ioctl.h header
and move those functions to it.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Also remove some blank lines that were used to split compat code at -devel
tree.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

check_v4l2 always returns 0, so this change is an noop for now,
but a comment says it will return something else in the future
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

change check_mode and set_mode to return negative errors and fix all callers
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The tuner driver used to change i2c_client.name for its own needs, but
it really shouldn't, as this field is used by i2c-core to do the
device/driver matching. So, create and use a separate field for the
tuner driver needs.
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Update all the remaining new-style i2c drivers to use standard module
aliasing instead of the old driver_name/type driver matching scheme.

Note that the tuner driver is a bit quirky at the moment, as it
overwrites i2c_client.name with arbitrary strings. We write "tuner"
back on remove, to make sure that driver cycling will work properly,
but there may still be troublesome corner cases.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The current code passes a context pointer in the xc5000_config struct.
This context pointer is used in the tuner_callback function, used to
reset the device after firmware download.

The xc5000_config struct is a static structure, whose .priv member was
being assigned before calling xc5000_attach().  If there are more than
one of the same device type installed on a single system, the last one
to assign xc5000_config.priv will "win", and all others will cease to
function properly.

This patch passes the context pointer in xc5000_attach() rather that
storing it within the static struct xc5000_config.
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

As pointed by Andrew Morton, the error testing were wrong. After reviewing
tea5767, it were returning a positive value for errors.

So, the double errors were cancelling each other.

This patch fix it properly. It also considers any positive value as ok, on
tuner-core.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

As reported by Mike Galbraith <efault@gmx.de>:

[   13.666587] TUNER: Unable to find symbol tda829x_probe()
[   13.674638] tuner' 1-004b: chip found @ 0x96 (saa7133[0])
[   13.691175] DVB: Unable to find symbol tda9887_attach()
[   13.698968] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[   13.709509] IP: [<ffffffff80302934>] strlcpy+0x11/0x36
[   13.711135] PGD be167067 PUD be140067 PMD 0
[   13.711137] Oops: 0000 [1] SMP
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>