Add support for OMAP4 version of TRNG module
that is present on OMAP4, AM33xx and OMAP5 SoCs.

The modules have several differences including register
offsets, output size, triggering rng and how configuring
FROs. To handle these differences, a platform_data structure
is defined and contains routine pointers, register offsets. OMAP2
specific routines are prefixed with 'omap2_' and OMAP4
specific routines are prefixed with 'omap4_'.

Note: Few Hard coded values are from the TI AM33xx SDK.
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This adds a driver for random number generator present on Broadcom BCM2835 SoC,
used in Raspberry Pi and Roku 2 devices.
Signed-off-by: NDom Cobley <popcornmix@gmail.com>
Signed-off-by: NLubomir Rintel <lkundrak@v3.sk>
Tested-by: NStephen Warren <swarren@wwwdotorg.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: linux-rpi-kernel@lists.infradead.org
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NKrzysztof Hałasa <khc@pm.waw.pl>

This moves the MTU timer driver from arch/arm/plat-nomadik
to drivers/clocksource and moves the header file to the
platform_data directory.

As this moves the last file being compiled to an object out
of arch/arm/plat-nomadik, we have to "turn off the light"
and delete the plat-nomadik directory, because it is not
allowed to have an empty Makefile in a plat-* directory.
This is probably also a desired side effect of depopulating
the arch/arm directory of drivers. Luckily we have just
deleted all the <plat/*> include files prior to this so
by moving the last one we may delete the directory.

After this all the Ux500 and Nomadik device drivers live
outside of the arch/arm hierarchy.

Cc: Alessandro Rubini <rubini@unipv.it>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This driver will make use of any available TPM chip on the system as a
hwrng source.
Acked-by: NDavid Safford <safford@linux.vnet.ibm.com>
Signed-off-by: NKent Yoder <key@linux.vnet.ibm.com>

Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: mpm@selenic.com
Cc: herbert@gondor.apana.org.au
Patchwork: https://patchwork.linux-mips.org/patch/3327/
Patchwork: https://patchwork.linux-mips.org/patch/4072/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch supports Exynos SOC's PRNG driver. Exynos's PRNG has 5 seeds and
5 random number outputs. Module is excuted under runtime power management control,
so it activates only while it's in use. Otherwise it will be suspended generally.
It was tested on PQ board by rngtest program.
Signed-off-by: NJonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Adds support for the Platform Facilities Option (PFO)-based hardware
random number generator for POWER hardware.
Signed-off-by: NMichael Neuling <mikey@neuling.org>
Signed-off-by: NRobert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: NKent Yoder <key@linux.vnet.ibm.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

In order to prevent building the Atmel hw_random driver for each and every
configuration, add a "default" Kconfig state in relation with
CONFIG_ARCH_AT91.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This will allow to select this driver for newer SoCs. Make sure to
keep dependency on HAVE_CLK to avoid breaking other machines.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>

* kill duplicates with drivers/char/Kconfig
* take watchdog one into drivers/watchdog/Kconfig
* take mmapper to arch/um/Kconfig.um
* rename Kconfig.char menu to "UML Character Devices"
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NRichard Weinberger <richard@nod.at>

For the IP block on 9g45/9g46/9m10/9m11.
Signed-off-by: NPeter Korsgaard <jacmet@sunsite.dk>
Reviewed-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>

Various PowerPC 4xx SoCs contain a TRNG embedded in the Security function.
This adds a device driver for that TRNG.
Signed-off-by: NJosh Boyer <jwboyer@linux.vnet.ibm.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

PPC 970FX Evaluation kit (Maple) boards bear AMD8111 southbridge.
Allow this driver to be compiled in if PPC_MAPLE is selected.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This driver adds support for the True Random Number Generator in
the Picochip PC3X3 and later devices.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Convert ARCH_OMAP24XX to ARCH_OMAP2
Signed-off-by: NTony Lindgren <tony@atomide.com>

The hardware random number generator by ST is used in both the Nomadik
8815 SoC and the U8500. It returns 16 bits every 400ns with automatic
delay if a read is issued too early. It depends on PLAT_NOMADIK.
Signed-off-by: NAlessandro Rubini <rubini@unipv.it>
Acked-by: NAndrea Gallo <andrea.gallo@stericsson.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Acked-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch adds support for the integrated RNG of the TX4939 SoC.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fix Kconfig to build via-rng.ko on X86_64 builds, as the VIA Nano
CPU supports x86_64, too.
Signed-off-by: NHarald Welte <HaraldWelte@viatech.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This hw-random driver add support to RNGA hardware found
on some i.MX processors.
Signed-off-by: NAlan Carvalho de Assis <acassis@gmail.com>
Acked-by: NMatt Mackall <mpm@selenic.com>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

  CC      drivers/char/hw_random/timeriomem-rng.o
drivers/char/hw_random/timeriomem-rng.c: In function 'timeriomem_rng_data_read':
drivers/char/hw_random/timeriomem-rng.c:60: error: implicit declaration of function 'readl'
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Some hardware platforms, the TS-7800[1] is one for example, can
supply the kernel with an entropy source, albeit a slow one for
TS-7800 users, by just reading a particular IO address.  This
source must not be read above a certain rate otherwise the quality
suffers.

The driver is then hooked into by calling
platform_device_(register|add|del) passing a structure similar to:
------
static struct timeriomem_rng_data ts78xx_ts_rng_data = {
        .address        = (u32 *__iomem) TS_RNG,
        .period         = 1000000, /* one second */
};

static struct platform_device ts78xx_ts_rng_device = {
        .name           = "timeriomem_rng",
        .id             = -1,
        .dev            = {
                .platform_data  = &ts78xx_ts_rng_data,
        },
        .num_resources  = 0,
};
------

[1] http://www.embeddedarm.com/products/board-detail.php?product=TS-7800Signed-off-by: NAlexander Clouter <alex@digriz.org.uk>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

With feedback and suggestions from Sam Ravnborg.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Note that by itself, having a "hardware" random generator does very
little: you should probably run "rngd" in your guest to feed this into
the kernel entropy pool.

Included:
	virtio_rng: dont use vmalloced addresses for virtio

	If virtio_rng is build as a module, random_data is an address
	in vmalloc space. As virtio expects guest real addresses, this
	can cause any kind of funny behaviour, so lets allocate
	random_data dynamically with kmalloc.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>

Update documentation for the hw_random support to be current:

 - Documentation/hw_random.txt has been updated to reflect the
   current code:  it's a framework now, a "core" with a small
   sysfs interface, that hardware-specific drivers plug in to.
   Text specific to Intel hardware is now at the end.

 - Kconfig now references the Documentation/hw_random.txt file
   and better explains what this really does.

Both chunks of documentation now higlight the fact that the kernel entropy
pool is maintained by "rngd", and this driver has nothing directly to do with
that important task.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

There will be more product numbers in the future than just PA6T-1682M,
but they will share much of the features. Remove some of the explicit
references and compatibility checks with 1682M, and replace most of them
with the more generic term "PWRficient".
Signed-off-by: NOlof Johansson <olof@lixom.net>
Acked-by: NMichael Buesch <mb@bu3sch.de>
Acked-by: NDoug Thompson <dougthompson@xmission.com>

Signed-off-by: NYinghai Lu <yinghai.lu@sun.com>
Acked-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAndi Kleen <ak@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Driver for the on-chip hardware random number generator on PA Semi
PA6T-1682M.
Signed-off-by: NEgor Martovetsky <egor@pasemi.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Despite it being small, there should be the option of making it a
module...
Signed-off-by: NJan Beulich <jbeulich@novell.com>
Cc: Michael Buesch <mb@bu3sch.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>