These callbacks are no longer used since the davinci drivers use the
control framework.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Cc: Prabhakar Lad <prabhakar.csengg@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

No longer used, can be removed.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Replace the old control code with the control framework.

This is one of the few remaining drivers that was not using this
framework.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Converts the dtt200u DVB USB driver over to the rc-core
infrastructure for its handling of IR remotes. This device can receive
generic NEC / NEC Extended signals and the switch to the newer core
enables the easy use of tools such as ir-keytable to modify the active
key map.
Signed-off-by: NJonathan McDowell <noodles@earth.li>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Fix RC5 decoding with Fintek CIR chipset

Commit e87b540b tightened up the RC5
decoding by adding a check for trailing silence to ensure a valid RC5
command had been received. Unfortunately the trailer length checked was
10 units and the Fintek CIR device does not want to provide details of a
space longer than 6350us. This meant that RC5 remotes working on a
Fintek setup on 3.16 failed on 3.17 and later. Fix this by shortening
the trailer check to 6 units (allowing for a previous space in the
received remote command).

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=117221Signed-off-by: NJonathan McDowell <noodles@earth.li>
Cc: stable@vger.kernel.org
Signed-off-by: NDavid Härdeman <david@hardeman.nu>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Implement memory barriers according to Documentation/circular-buffers.txt:
- use smp_store_release() to update ringbuffer read/write pointers
- use smp_load_acquire() to load write pointer on reader side
- use ACCESS_ONCE() to load read pointer on writer side

This fixes data stream corruptions observed e.g. on an ARM Cortex-A9
quad core system with different types (PCI, USB) of DVB tuners.
Signed-off-by: NSoeren Moch <smoch@web.de>
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

mtk-vcodec/venc_vpu_if.c:40:30: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  struct venc_vpu_inst *vpu = (struct venc_vpu_inst *)msg->venc_inst;
                              ^

Note: venc_inst is u64.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The workqueue "work_thread" is involved in updating parameters for
transfers. It has a single work item(&sd->work) and hence
doesn't require ordering. Also, it is not being used on a memory
reclaim path. Hence, the singlethreaded workqueue has been replaced with
the use of system_wq.

System workqueues have been able to handle high level of concurrency
for a long time now and hence it's not required to have a singlethreaded
workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue
created with create_singlethread_workqueue(), system_wq allows multiple
work items to overlap executions even on the same CPU; however, a
per-cpu workqueue doesn't have any CPU locality or global ordering
guarantee unless the target CPU is explicitly specified and thus the
increase of local concurrency shouldn't make any difference.

Work item has been flushed in sd_stop0() to ensure that there are no
pending tasks while disconnecting the driver.
Signed-off-by: NBhaktipriya Shridhar <bhaktipriya96@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

mtk-vcodec/mtk_vcodec_enc.c: In function 'mtk_venc_worker':
mtk-vcodec/mtk_vcodec_enc.c:1030:43: warning: format '%lx' expects argument of type 'long unsigned int', but argument 7 has type 'size_t {aka unsigned int}' [-Wformat=]
mtk-vcodec/mtk_vcodec_enc.c:1030:43: warning: format '%lx' expects argument of type 'long unsigned int', but argument 10 has type 'size_t {aka unsigned int}' [-Wformat=]
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The current code will expose a zero value if one of the stats is
not available, but this is not what userspace expects. Instead,
if something goes wrong on providing some stats, it should be
changing the scale to FE_SCALE_NOT_AVAILABLE.

So, change the logic to do the right thing.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

cxd2841er_read_agc_gain_c added to obtain signal strength.
signal strength now relay on AGC value.
Signed-off-by: NAbylay Ospan <aospan@netup.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The signal strength value is reversed: the bigger the number,
the weaker is the signal.

Fix the logic and present it in dBm. Please notice that the
dBm measure is actually an estimation, as the ratio is not
fully linear. It also varies with the frequency.

Yet, the estimation should be good enough for programs like
Kaffeine to indicate when the signal is good or bad.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: NAbylay Ospan <aospan@netup.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

It is a good idea to measure the signal strength while
tuning, as this helps to identify if the antenna is ok.
Also, such measure helps to identify the quality of the
signal.

Do some changes to enable it before signal lock. While
here, optimize the code to only initialize the stats
length once, and make sure that, just after set_frontend,
any reading for the stats that depends on lock to return
FE_SCALE_NOT_AVAILABLE.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: NAbylay Ospan <aospan@netup.ru>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The cec_msg_request_short_audio_descriptor function was missing the reply
argument. That's needed if you want the framework to wait for the reply
message.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The cec_ops_* functions never touch cec_msg, so mark it as const.

This was done for some of the cec_ops_ functions, but not all.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Add msg->len sanity checks to fix static checker warning:

	include/linux/cec-funcs.h:1154 cec_ops_set_osd_string()
	warn: setting length 'msg->len - 3' to negative one
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

- Use IS_REACHABLE(RC_CORE) instead of IS_ENABLED: if cec is built-in and
  RC_CORE is a module, then CEC can't reach the RC symbols.
- Both cec and cec-edid should be bool and use the same build 'mode' as
  MEDIA_SUPPORT (just as is done for the media controller code).
- Add a note to staging that this should be changed once the cec framework
  is moved out of staging.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Reported-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The MEDIA_CEC_EDID option is guarded by MEDIA_SUPPORT, so selecting
it from MEDIA_CEC produces a warning:

warning: (MEDIA_CEC) selects MEDIA_CEC_EDID which has unmet direct dependencies (MEDIA_SUPPORT)

The warning is harmless, but it's better to add an explicit
dependency to shut it up, to reduce the noise during randconfig
builds.

Fixes: ca684386 ("[media] cec: add HDMI CEC framework (api)")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The suspend/resume functions in the s5p-cec driver are only
referenced when CONFIG_PM is enabled, so we get a warning
about unused functions otherwise:

drivers/staging/media/s5p-cec/s5p_cec.c:260:12: error: 's5p_cec_resume' defined but not used [-Werror=unused-function]
 static int s5p_cec_resume(struct device *dev)
            ^~~~~~~~~~~~~~
drivers/staging/media/s5p-cec/s5p_cec.c:253:12: error: 's5p_cec_suspend' defined but not used [-Werror=unused-function]
 static int s5p_cec_suspend(struct device *dev)

This marks them as __maybe_unused to avoid the warning without
having to introduce an extra #ifdef.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

CEC_MSG_REPORT_PHYSICAL_ADDR can theoretically be received from
an unregistered device, but in that case the code should not attempt
to write the received physical address to the phys_addrs array.

That would be pointless since there can be multiple unregistered
devices that report a physical address. We just ignore those.

While at it, improve the dprintk since it would attempt to read
from that array as well with the same out-of-bounds problem.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Like the videodev2.h and other headers, explicitly allow these headers
to be used with the BSD license.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

When a reply to an earlier transmit is received, the tx_status of that
transmit needs to be restored. Otherwise the status that the transmit
was successful would be lost.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Add the keymap module for HDMI CEC remote control commands.
Signed-off-by: NKamil Debski <kamil@wypas.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

* topic/cec:
  [media] DocBook/media: add CEC documentation
  [media] s5p_cec: get rid of an unused var
  [media] move s5p-cec to staging
  [media] vivid: add CEC emulation
  [media] cec: s5p-cec: Add s5p-cec driver
  [media] cec: adv7511: add cec support
  [media] cec: adv7842: add cec support
  [media] cec: adv7604: add cec support
  [media] cec: add compat32 ioctl support
  [media] cec/TODO: add TODO file so we know why this is still in staging
  [media] cec: add HDMI CEC framework (api)
  [media] cec: add HDMI CEC framework (adapter)
  [media] cec: add HDMI CEC framework (core)
  [media] cec-funcs.h: static inlines to pack/unpack CEC messages
  [media] cec.h: add cec header
  [media] cec-edid: add module for EDID CEC helper functions
  [media] cec.txt: add CEC framework documentation
  [media] rc: Add HDMI CEC protocol handling

Linux 4.7-rc6

* tag 'v4.7-rc6': (1245 commits)
  Linux 4.7-rc6
  ovl: warn instead of error if d_type is not supported
  MIPS: Fix possible corruption of cache mode by mprotect.
  locks: use file_inode()
  usb: dwc3: st: Use explicit reset_control_get_exclusive() API
  phy: phy-stih407-usb: Use explicit reset_control_get_exclusive() API
  phy: miphy28lp: Inform the reset framework that our reset line may be shared
  namespace: update event counter when umounting a deleted dentry
  9p: use file_dentry()
  lockd: unregister notifier blocks if the service fails to come up completely
  ACPI,PCI,IRQ: correct operator precedence
  fuse: serialize dirops by default
  drm/i915: Fix missing unlock on error in i915_ppgtt_info()
  powerpc: Initialise pci_io_base as early as possible
  mfd: da9053: Fix compiler warning message for uninitialised variable
  mfd: max77620: Fix FPS switch statements
  phy: phy-stih407-usb: Inform the reset framework that our reset line may be shared
  usb: dwc3: st: Inform the reset framework that our reset line may be shared
  usb: host: ehci-st: Inform the reset framework that our reset line may be shared
  usb: host: ohci-st: Inform the reset framework that our reset line may be shared
  ...

These two fields are not used and can be removed.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

If the logical device is disabled then it can not generate interrupts.
Therefore this check is not needed.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Simplify interupt handling code.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Study states have never been used and are not needed. Remove them.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The definition of rawir includes the initialization already.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Simplify a few functions.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Wake states have never been in use and now that we can set the
wakeup sequence via sysfs there's in general no need for them.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The registers defining wakeup sequence handling are set when the
wakeup sequence is set via sysfs. There's no need to initialize them
otherwise.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

There is a rudimentary ISR for handling interrupts generated by the
wakeup part of the chip. Interrupts however have never been enabled
in the wakeup part.
Also, now that we can set the wakeup sequence via sysfs, there's in
general no need to enable interrupts in the wakeup part.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

To detect a rx fifo overrun it's checked whether the number of elements
in the chip fifo exceeds the fifo size. This check can never return true
and is wrong.
Instead we should generate an interrupt if the fifo overruns.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Disable runtime unbind as driver does not support it.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Move statistics polling to read_status() in order to avoid use of
kernel work. Also replace home made sign extension used for
statistics with kernel sign_extend32().
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Disable runtime unbind as driver does not support it.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Disable runtime unbind as driver does not support it.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Disable runtime unbind as driver does not support it.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>