Platform devices are configured through platform resources. The interrupt
in the driver uio_pdrv_genirq is instead configured through a side channel
i.e. the platform data structure. Make it possible to use the generic
configuration scheme via platform resource.
Signed-off-by: NBenedikt Spranger <b.spranger@linutronix.de>
Acked-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: N"Hans J. Koch" <hjk@hansjkoch.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch converts the drivers in drivers/uio/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Cc: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Magnus Damm <damm@igel.co.jp>
Cc: Amit Chatterjee <amit.chatterjee@ti.com>
Cc: Pratheesh Gangadhar <pratheesh@ti.com>
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

We are cleaning up the omnipresent module.h stuff, so people
who really use it need to call it out explicitly.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>

Remove the __devinitconst to fix the section mismatch.

WARNING: drivers/uio/built-in.o(.data+0x2e8): Section mismatch in
reference from the variable uio_pdrv_genirq to the variable
.devinit.rodata:uio_of_genirq_match
The variable uio_pdrv_genirq references
the variable __devinitconst uio_of_genirq_match
If the reference is valid then annotate the
variable with __init* or __refdata (see linux/init.h) or name the
variable:
*driver, *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one,
*_console
Signed-off-by: NWanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Adding OF binding to genirq.
Version string is setup to the "devicetree".

Compatible string is not setup for now but you can add your
custom compatible string to uio_of_genirq_match structure.

For example with "vendor,device" compatible string:
static const struct of_device_id __devinitconst uio_of_genirq_match[] = {
	{ .compatible = "vendor,device", },
	{ /* empty for now */ },
};
Signed-off-by: NMichal Simek <monstr@monstr.eu>
Signed-off-by: NHans J. Koch <hjk@hansjkoch.de>
Reviewed-by: NWolfram Sang <w.sang@pengutronix.de>
CC: Hans J. Koch <hjk@hansjkoch.de>
CC: Arnd Bergmann <arnd@arndb.de>
CC: John Williams <john.williams@petalogix.com>
CC: Grant Likely <grant.likely@secretlab.ca>
CC: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Several fixes as well where the +1 was missing.

Done via coccinelle scripts like:

@@
struct resource *ptr;
@@

- ptr->end - ptr->start + 1
+ resource_size(ptr)

and some grep and typing.

Mostly uncompiled, no cross-compilers.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The uioinfo should be cleaned up when uninstall, otherwise re-install
failure of uio_pdrv_genirq.ko will happen.
Signed-off-by: NJie Zhou <b30303@freescale.com>
Signed-off-by: NAisheng Dong <b29396@freescale.com>
Signed-off-by: NHans J. Koch <hjk@hansjkoch.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove IRQF_DISABLED flag since it is deprecated and a no-op in the
current kernel.
Signed-off-by: NHans J. Koch <hjk@linutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

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>

Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

This patch modifies the uio_pdrv_genirq driver to support
Runtime PM. The power management implementation simply
runtime resumes the device at open() time and runtime
suspends it at release() time. The user space driver is
responsible for re-initializing the hardware after open().
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

I can't think of a reason why the driver prevents people from setting any
custom bits in their platform device, but I can think of some reasons for
allowing custom flags.  Like setting the IRQF_TRIGGER_... bits.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NHans J. Koch <hjk@linutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This is V3 of uio_pdrv_genirq.c, a platform driver for UIO with
generic IRQ handling code. This driver is very similar to the regular
UIO platform driver, but is only suitable for devices that are
connected to the interrupt controller using unique interrupt lines.

The uio_pdrv_genirq driver includes generic interrupt handling code
which disables the serviced interrupt in the interrupt controller
and makes the user space driver responsible for acknowledging the
interrupt in the device and reenabling the interrupt in the interrupt
controller.

Shared interrupts are not supported since the in-kernel interrupt
handler will disable the interrupt line in the interrupt controller,
and in a shared interrupt configuration this will stop other devices
from delivering interrupts.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NHans J. Koch <hjk@linutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>