media_build/v4l/au0828-video.c: In function 'au0828_irq_callback':
media_build/v4l/au0828-video.c:123:6: warning: variable 'rc' set but not used [-Wunused-but-set-variable]
media_build/v4l/cx23888-ir.c: In function 'pulse_clocks_to_clock_divider':
media_build/v4l/cx23888-ir.c:334:6: warning: variable 'rem' set but not used [-Wunused-but-set-variable]
media_build/v4l/cx25840-ir.c: In function 'pulse_clocks_to_clock_divider':
media_build/v4l/cx25840-ir.c:319:6: warning: variable 'rem' set but not used [-Wunused-but-set-variable]
media_build/v4l/cx25840-ir.c: In function 'cx25840_ir_tx_write':
media_build/v4l/cx25840-ir.c:863:21: warning: variable 'c' set but not used [-Wunused-but-set-variable]
media_build/v4l/em28xx-audio.c: In function 'snd_em28xx_hw_capture_params':
media_build/v4l/em28xx-audio.c:346:31: warning: variable 'format' set but not used [-Wunused-but-set-variable]
media_build/v4l/em28xx-audio.c:346:25: warning: variable 'rate' set but not used [-Wunused-but-set-variable]
media_build/v4l/em28xx-audio.c:346:15: warning: variable 'channels' set but not used [-Wunused-but-set-variable]
media_build/v4l/hdpvr-control.c: In function 'get_input_lines_info':
media_build/v4l/hdpvr-control.c:98:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
media_build/v4l/hdpvr-video.c: In function 'hdpvr_try_ctrl':
media_build/v4l/hdpvr-video.c:955:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
media_build/v4l/saa7134-video.c: In function 'saa7134_s_tuner':
media_build/v4l/saa7134-video.c:2030:6: warning: variable 'rx' set but not used [-Wunused-but-set-variable]
media_build/v4l/sn9c102_core.c: In function 'sn9c102_stream_interrupt':
media_build/v4l/sn9c102_core.c:998:7: warning: variable 'timeout' set but not used [-Wunused-but-set-variable]
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Acked-by: NJanne Grunau <j@jannau.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

(Resending because Mauro reported losing some emails on IRC)

Provide CX2388[578] IR receive timeout (RTO) reports in the
final space raw event sent up the chain to the raw IR pulse
decoders. This should allow the lirc decoder to actually
measure the inter-transmission gap properly.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The Remote Controller subsystem is meant to be used not only by Infra Red
but also for similar types of Remote Controllers. The core is not specific
to Infra Red. As such, rename:
	- ir-core.h to rc-core.h
	- IR_CORE to RC_CORE
	- namespace inside rc-core.c/rc-core.h

To be consistent with the other changes.

No functional change on this patch.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Few drivers still have assumption that ir_raw_event
consists of duration and pulse flag.
Fix that.
Signed-off-by: NMaxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The CX23885 and CX25840 modules were using their own simple
IR pulse width measurement record type which required conversion
when passing to the new IR core.  This change makes that record type
consistent with the new IR core and removes a data conversion.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Instead of reporting an IR Rx timeout event as a ridiculously
long space, report it as a space of the lenght of the timeout.

This partially fixes operation with LIRC without breaking
interoperation with the in kernel decoders.  The gaps lengths
reported to LIRC are still not real however.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Compute and report the maximum IR pulse measurment width, even
if we are set to perform carrier modulation or demodulation and
the number is fixed by the carrier freq.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The CX2584x and related cores are multifunction subdevices with a number
of internal blocks that act as interrupt sources.  Move the v4L2_subdev
interrupt_service_routine callback from v4l_subdev_ir_ops to
v4l2_subdev_core_ops, as the video and audio blocks of a CX2584x and
related cores can generate interrupts along with the IR block.  This
change also makes sense for other subdev's that generate interrupts and
do not have an IR block.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

There is a distinction on IR Tx for the CX2388[578] chips of carrier
sense inversion (space is a carrier burst and mark is no burst) and I/O
pin level inversion (0 is high output level, 1 is low output level).
Allow the caller to set these parameters distinctly as v4l2_subdevice
IR parameters.  This permits the IR device to be configured and enabled
without the IR Tx LED being on during idle/space time due to an external
hardware level inversion
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

A trivial change to update my email address from my dead awalls@radix.net
address to my current awalls@md.metrocast.net address.
Signed-off-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: NTejun Heo <tj@kernel.org>
Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

Fix the cx23888 driver to use the new kfifo API.  Using kfifo_reset()
may result in a possible race conditions.  This patch fixes it by using
a spinlock around the kfifo_reset() function.
Signed-off-by: NStefani Seibold <stefani@seibold.net>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Reviewed-by: NAndy Walls <awalls@radix.net>
Acked-by: NAndy Walls <awalls@radix.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add whitespace around binary operators in cx23888-ir.c
Signed-off-by: NAndy Walls <awalls@radix.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This change completes the v4l2_subdev implementation for IR receive for the
IR controller built into the CX23888.

This changes almost completes the IR transmit side also, but doesn't.  Instead
notes in the comments describe what needs to be done for IR Tx to work in the
subdevice implementation.

The current Tx behavior is skeletal and benign.  If left alone, it does nothing.
It will only ever generate a Tx interrupt on Tx init by a caller or when the
tx_write() method is called.  The ISR, when called, will then disable the Tx
FIFO service interrupt.
Signed-off-by: NAndy Walls <awalls@radix.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This change adds a skeletal implementation of a v4l2_subdevice to provide
encapsulation and abstraction of the CX23888's integrated consumer infrared
controller.  This change also instantiates the cx23888_ir subdev for the
HVR-1850 which has IR hardware physically wired up to a CX23888.

The cx23888_ir subdev code is being written with long-term objectives to:
1. port it to the cx25840 module for the CX2584x, CX2583x, CX23885, & CX231xx
   IR controllers
2. possibly port it to the cx18 module for the CX23418 IR controller
3. have the IR subdevice accessed abstractly in the cx23885 module, so the
   driver can ignore the difference between the CX23885 and CX23888.
Signed-off-by: NAndy Walls <awalls@radix.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>