RTC Driver for Dialog Semiconductor DA9052/53 PMICs.

This patch is functionally tested on Samsung SMDKV6410.

[akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays]
Signed-off-by: NDavid Dajun Chen <dchen@diasemi.com>
Signed-off-by: NAshish Jangam <ashish.jangam@kpitcummins.com>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: David Dajun Chen <dchen@diasemi.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add RTC support(TOY counter0) for loongson1B SOC
Signed-off-by: Nzhao zhang <zhzhl555@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Ralf Baechle <ralf@linux-mips.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This patch changes the ARCH name to "ARCH_S3C24XX" for Samsung
S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443,
and S3C2450 SoCs so that we can merge the mach-xxx directories
and plat-s3c24xx dir. to just one mach-s3c24xx for them.

I think this should be sent to upstream via samsung tree because
this touches many samsung stuff.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
[for the gadget part:]
Acked-by: NFelipe Balbi <balbi@ti.com>
[for the framebuffer (video) part:]
Acked-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>
[For the watchdog-part:]
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This reverts commit 7cea0065.

The sa1100 cleanups fatally broke the SA1100 RTC driver - the first
hint that something is wrong are these compiler warnings:

drivers/rtc/rtc-sa1100.c:42:1: warning: "RCNR" redefined
In file included from arch/arm/mach-sa1100/include/mach/hardware.h:73,
                 from drivers/rtc/rtc-sa1100.c:35:
arch/arm/mach-sa1100/include/mach/SA-1100.h:877:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:43:1: warning: "RTAR" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:876:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:44:1: warning: "RTSR" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:879:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:45:1: warning: "RTTR" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:878:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:47:1: warning: "RTSR_HZE" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:891:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:48:1: warning: "RTSR_ALE" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:890:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:49:1: warning: "RTSR_HZ" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:889:1: warning: this is the location of the previous definition
drivers/rtc/rtc-sa1100.c:50:1: warning: "RTSR_AL" redefined
arch/arm/mach-sa1100/include/mach/SA-1100.h:888:1: warning: this is the location of the previous definition

and the second problem, which is far more severe, are the different
register layouts, resulting in the wrong registers being read on
SA11x0 platforms.  This patch adds:

	#define RCNR           0x00    /* RTC Count Register */
	#define RTAR           0x04    /* RTC Alarm Register */
	#define RTSR           0x08    /* RTC Status Register */
	#define RTTR           0x0c    /* RTC Timer Trim Register */

but the SA11x0 registers are:

	#define RTAR            __REG(0x90010000)  /* RTC Alarm Reg. */
	#define RCNR            __REG(0x90010004)  /* RTC CouNt Reg. */
	#define RTTR            __REG(0x90010008)  /* RTC Trim Reg. */
	#define RTSR            __REG(0x90010010)  /* RTC Status Reg. */

Since the regmap of rtc on sa1100, pxa and mmp Marvell soc families are
almost the same, so re-arch the rtc-sa1100 to support them.
Signed-off-by: NJett.Zhou <jtzhou@marvell.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This sets all up the other bits that need to be INTEL_MID
specific rather than Moorestown specific.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Link: http://lkml.kernel.org/r/20111217174318.7207.91543.stgit@bob.linux.org.ukSigned-off-by: NIngo Molnar <mingo@elte.hu>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NRichard Weinberger <richard@nod.at>

Add support for PMIC8xxx based RTC.  PMIC8xxx is Qualcomm's power
management IC that internally houses an RTC module.  This driver
communicates with the PMIC module over SSBI bus.

[akpm@linux-foundation.org: cosmetic tweaks]
Acked-by: NWan ZongShun <mcuos.com@gmail.com>
Reviewed-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NAnirudh Ghayal <aghayal@codeaurora.org>
Signed-off-by: NAshay Jaiswal <ashayj@codeaurora.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

MPC5200B contains a limited version of RTC from MPC5121.  Add support for
the RTC on that CPU.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The stmp3xxx  driver used to include functions from a stmp-specific
include. Because of consolidation, plat-stmp has now been removed and
merged with the compatible mach-mxs.

Use the apropriate mxs-functions for transition. The accessors will be
converted to readl/writel in a later patch.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Tested-by: NShawn Guo <shawn.guo@freescale.com>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>

The patch moves rtc driver for PKUnity-v3 SoC from arch/unicore32/kernel/
to drivers/rtc/, with renaming it to rtc-puv3.c.
Also, Kconfig, Makefile, and MAINTAINERS are modified correspondingly.
Signed-off-by: NGuan Xuetao <gxt@mprc.pku.edu.cn>
Acked-by: NArnd Bergmann <arnd@arndb.de>

Signed-off-by: NRajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: NViresh Kumar <viresh.kumar@st.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add basic support for ST m41t93 SPI RTCs.  Tested with factory-new and
with "run-in" species with and without backup batteries.
Signed-off-by: NNikolaus Voss <n.voss@weinmann.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for the Micro Crystal RV3029-C2 RTC chips.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NGregory Hermant <gregory.hermant@calao-systems.com>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for EM Microelectronic EM3027 RTC chip.
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This adds a driver for the RTC devices in VIA and WonderMedia
Systems-on-Chip.  Alarm, 1Hz interrupts, reading and setting time are
supported.
Signed-off-by: NAlexey Charkov <alchark@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Alexey Charkov <alchark@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Enable rtc function in 88pm860x PMIC.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is a simple RTC driver that lets Tilera hardware boot up and
set the clock correctly.
Acked-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NChris Metcalf <cmetcalf@tilera.com>

The RTC subsystem has a number of accessors that are available via
include/linux/rtc.h. However many of these interfaces are not
available for use if CONFIG_RTC_CLASS=m.

So in order to support wider use of the RTC in the kernel, I'm
removing the tristate config option for a bool, so that code can
easily be conditionalized if the RTC class is present or not.
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

This is a platform driver that supports the built-in real-time clock on
Tegra SOCs.
Signed-off-by: NAndrew Chew <achew@nvidia.com>
Acked-by: NAlessandro Zummo <a.zummo@towertech.it>
Acked-by: NWan ZongShun <mcuos.com@gmail.com>
Acked-by: NJon Mayo <jmayo@nvidia.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Uwe pointed out that my alarm based UIE emulation is not sufficient
to replace the older timer/polling based UIE emulation on devices
where there is no alarm irq. This causes rtc devices without alarms
to return -EINVAL to UIE ioctls. The fix is to re-instate the old
timer/polling method for devices without alarm irqs.

This patch reverts the following commits:
042620a0 - Remove UIE emulation
1daeddd5 - Cleanup removed UIE emulation declaration
b5cc8ca1 - Remove Kconfig symbol for UIE emulation

The emulation mode will still need to be wired-in with a following
patch before it will work.

CC: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
CC: Thomas Gleixner <tglx@linutronix.de>
Reported-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NJohn Stultz <john.stultz@linaro.org>

The effect of changing the value of this symbol is gone since 042620a0
(RTC: Remove UIE emulation).

Remove symbol too.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: John Stultz <john.stultz@linaro.org>
LKML-Reference: <1295625406-15340-1-git-send-email-u.kleine-koenig@pengutronix.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

Provide the standard kernel rtc driver interface on top of the vrtc layer
added in the previous patch.
Signed-off-by: NFeng Tang <feng.tang@intel.com>
LKML-Reference: <20101110172911.3311.20593.stgit@localhost.localdomain>
[Fixed swapped arguments on IPC]
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
[Cleaned up and the device creation moved to arch/x86/platform]
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>

The mfd driver for MC13783 recently got support for MC13892 and was
renamed accordingly from mc13783-core to mc13xxx-core.  Do the same for
rtc-mc13783.

The only relevant change is to use platform id's to tell the platform bus
that this driver is responsible for mc13892-rtc devices, too.
Acked-by: NAlessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This adds support for the RTC provided by the Maxim 8998 chip. This
driver was tested on a GONI board by using the rtc-test application from
the Documentation/rtc.txt.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NAlessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

The DS3232 RTC driver only has the tick function.  Add an alarm function
so the driver is complete.
Signed-off-by: NLan Chunhe-B25806 <b25806@freescale.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add an RTC driver for the built-in RTC in the LPC32XX SoC.  This patch
includes updates from the initial review comments and updates from the v3
review.
Signed-off-by: NKevin Wells <wellsk40@gmail.com>
Signed-off-by: NDurgesh Pattamatta <durgesh.pattamatta@nxp.com>
Reviewed-by: NWolfram Sang <w.sang@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Enable built-in RTC IP in Kconfig and modify comments and help messages.
RTT as RTC is still available but should not be selected in common case.
Reported-by: NYegor Yefremov <yegor_sub1@visionsystems.de>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

Add a driver for the DS3232 RTC chip via the I2C bus.  Alarms are not
supported in this version of the driver.

[akpm@linux-foundation.org: fix Kconfig help text]
Signed-off-by: NMingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: NJingchang Lu <b22599@freescale.com>
Signed-off-by: NSrikanth Srinivasan <srikanth.srinivasan@freescale.com>
Signed-off-by: NRoy Zang <tie-fei.zang@freescale.com>
Acked-by: NWan ZongShun <mcuos.com@gmail.com>
Cc: Kumar Gala <kumar.gala@freescale.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

- derived from rtc-pcf8563

- no SRAM driver
Signed-off-by: NRoman Fietze <roman.fietze@telemotive.de>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This driver is based on code from Freescale which accompanies their i.MX25
PDK board, with some cleanup.
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sascha Hauer <kernel@pengutronix.de>
Acked-by: NWan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for the RTC unit on JZ4740 SoCs.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: rtc-linux@googlegroups.com
Acked-by: NWan ZongShun <mcuos.com@gmail.com>
Cc: linux-mips@linux-mips.org 
Cc: linux-kernel@vger.kernel.org
Cc: Alessandro Zummo <a.zummo@towertech.it>,
Patchwork: https://patchwork.linux-mips.org/patch/1424/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Remove the CONFIG_SOC_AU1X00 Kconfig symbol since its job can also be done
by MACH_ALCHEMY, now renamed to MIPS_ALCHEMY.
Signed-off-by: NManuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/1461/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch adds HAVE_S3C_RTC to control inclusion of RTC driver for Samsung
SoCs. This option will help to include the driver only for the necessary
machines and not for any given arch.
Signed-off-by: NAtul Dahiya <atul.dahiya@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>

Add a driver for the RTC on the AB8500 power management chip.  This is a
client of the AB8500 MFD driver.
Signed-off-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: NRabin Vincent <rabin.vincent@stericsson.com>
Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
Acked-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for the S3C64xx SoC to the generic S3C RTC driver.
Signed-off-by: NMaurus Cuelenaere <mcuelenaere@gmail.com>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Cc: Frans Pop <elendil@planet.nl>
Cc: Paul Gortmaker <p_gortmaker@yahoo.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This driver features:

* Alarm support.
* Periodic interrupt by using a timer include into the RTC module.
* The update interrupt is not supported by this RTC module.

This driver was tested on a DM365 EVM by using the rtc-test application
from the Documentation/rtc.txt.
Signed-off-by: NMiguel Aguilar <miguel.aguilar@ridgerun.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>
Acked-by: NAlessandro Zummo <a.zummo@towertech.it>

MAX8925 is a PMIC that contains RTC component.
Signed-off-by: NHaojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Add support for MPC5121 real time clock module.
Signed-off-by: NJohn Rigby <jcrigby@gmail.com>
Signed-off-by: NPiotr Ziecik <kosmo@semihalf.com>
Signed-off-by: NWolfgang Denk <wd@denx.de>
Signed-off-by: NAnatolij Gustschin <agust@denx.de>
Acked-by: NAlessandro Zummo <a.zummo@towertech.it>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Hu Ruihuan <specter118@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: "jack wang" <jack_wang@usish.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>