Commit Graph

1609 Commits

Author SHA1 Message Date
Julia Lawall 7c1d69ee11 rtc: simplify devm_request_mem_region/devm_ioremap
Convert the composition of devm_request_mem_region and devm_ioremap to a
single call to devm_ioremap_resource.  The associated call to
platform_get_resource is also simplified and moved next to the new call
to devm_ioremap_resource.

This was done using a combination of the semantic patches
devm_ioremap_resource.cocci and devm_request_and_ioremap.cocci, found in
the scripts/coccinelle/api directory.

In rtc-lpc32xx.c and rtc-mv.c, the local variable size is no longer needed.

In rtc-ds1511.c the size field of the local structure is not useful any
more, and is deleted.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:59 -07:00
Alexander Shiyan 1735be4b82 drivers/rtc/rtc-ds1742.c: report to RTC core if retrieved time is invalid
Let RTC core decide if the retrieved time is invalid, instead of
processing errors in the driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:58 -07:00
Alexander Shiyan 2cbc21877a drivers/rtc/rtc-ds1742.c: remove unused field "rtc" from private structure
Private field "rtc" is not used outside "probe", so there is no reason to
keep it.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:58 -07:00
Alexander Shiyan 25e2818e38 drivers/rtc/rtc-ds1742.c: use devm_ioremap_resource()
Replace devm_request_mem_region() and devm_ioremap() with
devm_ioremap_resource().

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:58 -07:00
Xianglong Du 28984c7d94 drivers/rtc/rtc-sirfsoc.c: fix kernel warning during wakeup
enable_irq_wake() might fail, if so, we will see kernel warning in resume
entries due to it always calls disable_irq_wake().

  WARNING: at kernel/irq/manage.c:529 irq_set_irq_wake+0xc4/0xf0()
  Unbalanced IRQ 52 wake disable
  Modules linked in: ipv6 libcomposite configfs
  CPU: 0 PID: 1591 Comm: ash Tainted: G        W    3.10.0-00854-gdbd86d4-dirty #100
    (unwind_backtrace+0x0/0xf8) from (show_stack+0x10/0x14)
    (show_stack+0x10/0x14) from (warn_slowpath_common+0x54/0x68)
    (warn_slowpath_common+0x54/0x68) from (warn_slowpath_fmt+0x30/0x40)
    (warn_slowpath_fmt+0x30/0x40) from (irq_set_irq_wake+0xc4/0xf0)
    (irq_set_irq_wake+0xc4/0xf0) from (sirfsoc_rtc_restore+0x30/0x38)
    (sirfsoc_rtc_restore+0x30/0x38) from (platform_pm_restore+0x2c/0x50)
    (platform_pm_restore+0x2c/0x50) from (dpm_run_callback.clone.6+0x30/0xb0)
    (dpm_run_callback.clone.6+0x30/0xb0) from (device_resume+0x88/0x134)
    (device_resume+0x88/0x134) from (dpm_resume+0x114/0x230)
    (dpm_resume+0x114/0x230) from (hibernation_snapshot+0x178/0x1d0)
    (hibernation_snapshot+0x178/0x1d0) from (hibernate+0x130/0x1dc)
    (hibernate+0x130/0x1dc) from (state_store+0xb4/0xc0)
    (state_store+0xb4/0xc0) from (kobj_attr_store+0x14/0x20)
    (kobj_attr_store+0x14/0x20) from (sysfs_write_file+0xfc/0x17c)
    (sysfs_write_file+0xfc/0x17c) from (vfs_write+0xc8/0x194)
    (vfs_write+0xc8/0x194) from (SyS_write+0x40/0x6c)
    (SyS_write+0x40/0x6c) from (ret_fast_syscall+0x0/0x30)

To avoid unbalanced "IRQ wake disable", ensure that disable_irq_wake() is
called only when enable_irq_wake() have been successfully enabled.

Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:57 -07:00
Jingoo Han 0ebbf43976 drivers/rtc/rtc-nuc900.c: use NULL instead of 0
check_rtc_access_enable() returns pointer, thus NULL should be used
instead of 0 in order to fix the following sparse warning:

  drivers/rtc/rtc-nuc900.c:102:16: warning: Using plain integer as NULL pointer

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:57 -07:00
Sangjung Woo 1748cbf7f7 drivers/rtc/rtc-max77686.c: Fix wrong register
Fix a read of the wrong register when checking whether the RTC timer has
reached the alarm time.

Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>
Signed-off-by: Myugnjoo Ham <myungjoo.ham@samsung.com>
Reviewed-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:56 -07:00
Alexander Holler 7707bda3ee drivers/rtc/rtc-hid-sensor-time.c: improve error handling when rtc register fails
Stop processing hid input when registering the RTC fails and handle a NULL
returned from devm_rtc_device_register() as a failure too.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:55 -07:00
Laxman Dewangan 666a584d3a drivers/rtc/rtc-palmas.c: support for backup battery charging
Palmas series device like TPS65913, TPS80036 supports the backup battery
for powering the RTC when no other energy source is available.

The backup battery is optional, connected to the VBACKUP pin, and can be
nonrechargeable or rechargeable.  The rechargeable battery can be charged
from the system supply using the backup battery charger.

Add support for enabling charging of this backup battery.  Also add the DT
binding document and the new properties to have this support.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:55 -07:00
Hebbar Gururaja 8af750e3f5 drivers/rtc/rtc-omap.c: add rtc wakeup support to alarm events
On some platforms (like AM33xx), a special register (RTC_IRQWAKEEN) is
available to enable Alarm Wakeup feature.  This register needs to be
properly handled for the rtcwake to work properly.

Platforms using such IP should set "ti,am3352-rtc" in rtc device dt
compatibility node.

Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:54 -07:00
Jonas Jensen 453b4c6db5 rtc: add MOXA ART RTC driver
Add RTC driver for MOXA ART SoCs.

Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:54 -07:00
Sachin Kamat 4540bae9cd drivers/rtc/rtc-pcf2127.c: remove empty function
The 'remove' function is empty and does not do anything.  Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:53 -07:00
Alexander Holler ae259925bc drivers/rtc/rtc-hid-sensor-time.c: add module alias to let the module load automatically
In order to get the module automatically loaded by hotplug mechanisms a
MODULE_DEVICE_TABLE is needed.

Therefore add one.

This makes it also possible to use a module name other than
HID-SENSOR-2000a0 which isn't very descriptive in kernel messages.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:52 -07:00
Shuah Khan a8a3808b43 rtc: convert rtc-cmos to dev_pm_ops from legacy pm_ops
Convert drivers/rtc/rtc-cmos to use dev_pm_ops instead of legacy pm_ops.
This patch depends on pnp driver bus ops change to invoke pnp_driver
dev_pm_ops.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Cc: Leonidas Da Silva Barbosa <leosilva@linux.vnet.ibm.com>
Cc: Ashley Lai <ashley@ashleylai.com>
Cc: Rajiv Andrade <mail@srajiv.net>
Cc: Marcel Selhorst <tpmdd@selhorst.net>
Cc: Sirrix AG <tpmdd@sirrix.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Peter Hüwe <PeterHuewe@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:58:15 -07:00
Linus Torvalds 27703bb4a6 PTR_RET() is a weird name, and led to some confusing usage. We ended
up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.
 
 This has been sitting in linux-next for a whole cycle.
 
 Thanks,
 Rusty.
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Merge tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull PTR_RET() removal patches from Rusty Russell:
 "PTR_RET() is a weird name, and led to some confusing usage.  We ended
  up with PTR_ERR_OR_ZERO(), and replacing or fixing all the usages.

  This has been sitting in linux-next for a whole cycle"

[ There are still some PTR_RET users scattered about, with some of them
  possibly being new, but most of them existing in Rusty's tree too.  We
  have that

      #define PTR_RET(p) PTR_ERR_OR_ZERO(p)

  thing in <linux/err.h>, so they continue to work for now  - Linus ]

* tag 'PTR_RET-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  GFS2: Replace PTR_RET with PTR_ERR_OR_ZERO
  Btrfs: volume: Replace PTR_RET with PTR_ERR_OR_ZERO
  drm/cma: Replace PTR_RET with PTR_ERR_OR_ZERO
  sh_veu: Replace PTR_RET with PTR_ERR_OR_ZERO
  dma-buf: Replace PTR_RET with PTR_ERR_OR_ZERO
  drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO
  mm/oom_kill: remove weird use of ERR_PTR()/PTR_ERR().
  staging/zcache: don't use PTR_RET().
  remoteproc: don't use PTR_RET().
  pinctrl: don't use PTR_RET().
  acpi: Replace weird use of PTR_RET.
  s390: Replace weird use of PTR_RET.
  PTR_RET is now PTR_ERR_OR_ZERO(): Replace most.
  PTR_RET is now PTR_ERR_OR_ZERO
2013-09-04 17:31:11 -07:00
Linus Torvalds 542a086ac7 Driver core patches for 3.12-rc1
Here's the big driver core pull request for 3.12-rc1.
 
 Lots of tiny changes here fixing up the way sysfs attributes are
 created, to try to make drivers simpler, and fix a whole class race
 conditions with creations of device attributes after the device was
 announced to userspace.
 
 All the various pieces are acked by the different subsystem maintainers.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here's the big driver core pull request for 3.12-rc1.

  Lots of tiny changes here fixing up the way sysfs attributes are
  created, to try to make drivers simpler, and fix a whole class race
  conditions with creations of device attributes after the device was
  announced to userspace.

  All the various pieces are acked by the different subsystem
  maintainers"

* tag 'driver-core-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (119 commits)
  firmware loader: fix pending_fw_head list corruption
  drivers/base/memory.c: introduce help macro to_memory_block
  dynamic debug: line queries failing due to uninitialized local variable
  sysfs: sysfs_create_groups returns a value.
  debugfs: provide debugfs_create_x64() when disabled
  rbd: convert bus code to use bus_groups
  firmware: dcdbas: use binary attribute groups
  sysfs: add sysfs_create/remove_groups for when SYSFS is not enabled
  driver core: add #include <linux/sysfs.h> to core files.
  HID: convert bus code to use dev_groups
  Input: serio: convert bus code to use drv_groups
  Input: gameport: convert bus code to use drv_groups
  driver core: firmware: use __ATTR_RW()
  driver core: core: use DEVICE_ATTR_RO
  driver core: bus: use DRIVER_ATTR_WO()
  driver core: create write-only attribute macros for devices and drivers
  sysfs: create __ATTR_WO()
  driver-core: platform: convert bus code to use dev_groups
  workqueue: convert bus code to use dev_groups
  MEI: convert bus code to use dev_groups
  ...
2013-09-03 11:37:15 -07:00
Lothar Waßmann 28a0c88312 drivers/rtc/rtc-stmp3xxx.c: provide timeout for potentially endless loop polling a HW bit
It's always a bad idea to poll on HW bits without a timeout.

The i.MX28 RTC can be easily brought into a state in which the RTC is
not running (until after a power-on-reset) and thus the status bits
which are polled in the driver won't ever change.

This patch prevents the kernel from getting stuck in this case.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-08-13 17:57:48 -07:00
Grygorii Strashko b99b94b523 drivers/rtc/rtc-twl.c: fix: rtcX/wakealarm attribute isn't created
The device_init_wakeup() should be called before rtc_device_register().
Otherwise, sysfs "sys/class/rtc/rtcX/wakealarm" attribute will not be seen
from User space.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-31 14:41:03 -07:00
Greg Kroah-Hartman f21e683508 rtc: convert class code to use dev_groups
The dev_attrs field of struct class is going away soon, dev_groups
should be used instead.  This converts the rtc class code to use the
correct field.

Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-29 13:10:58 -07:00
Sachin Kamat dac30a9843 drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO
PTR_RET is now deprecated. Use PTR_ERR_OR_ZERO instead.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-07-16 16:06:00 +09:30
Linus Torvalds 3aa78e0cb5 For the 3.11 merge we only have one new MFD driver for the Kontron PLD.
But we also have:
 
 - Support for the TPS659038 PMIC from the palmas driver.
 
 - Intel's Coleto Creek and Avoton SoCs support from the lpc_ich driver.
 
 - RTL8411B support from the rtsx driver.
 
 - More DT support for the Arizona, max8998, twl4030-power and the
   ti_am335x_tsadc drivers.
 
 - The SSBI driver move under MFD.
 
 - A conversion to the devm_* API for most of the MFD drivers.
 
 - The twl4030-power got split from twl-core into its own module.
 
 - A major ti_am335x_adc cleanup, leading to a proper DT support.
 
 - Our regular arizona and wm* updates and cleanups from the Wolfson
   folks.
 
 - A better error handling and initialization, and a regulator subdevice
   addition for the 88pm80x driver.
 
 - A bulk platform_set_drvdata() call removal that's no longer need since
   commit 0998d063.
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Merge tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next

Pull MFD update from Samuel Ortiz:
 "For the 3.11 merge we only have one new MFD driver for the Kontron
  PLD.

  But we also have:
   - Support for the TPS659038 PMIC from the palmas driver.
   - Intel's Coleto Creek and Avoton SoCs support from the lpc_ich
     driver.
   - RTL8411B support from the rtsx driver.
   - More DT support for the Arizona, max8998, twl4030-power and the
     ti_am335x_tsadc drivers.
   - The SSBI driver move under MFD.
   - A conversion to the devm_* API for most of the MFD drivers.
   - The twl4030-power got split from twl-core into its own module.
   - A major ti_am335x_adc cleanup, leading to a proper DT support.
   - Our regular arizona and wm* updates and cleanups from the Wolfson
     folks.
   - A better error handling and initialization, and a regulator
     subdevice addition for the 88pm80x driver.
   - A bulk platform_set_drvdata() call removal that's no longer need
     since commit 0998d06310 ("device-core: Ensure drvdata = NULL when
     no driver is bound")

* tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (102 commits)
  mfd: sec: Provide max_register to regmap
  mfd: wm8994: Remove duplicate check for active JACKDET
  MAINTAINERS: Add include directory to MFD file patterns
  mfd: sec: Remove fields not used since regmap conversion
  watchdog: Kontron PLD watchdog timer driver
  mfd: max8998: Add support for Device Tree
  regulator: max8998: Use arrays for specifying voltages in platform data
  mfd: max8998: Add irq domain support
  regulator: palmas: Add TPS659038 support
  mfd: Kontron PLD mfd driver
  mfd: palmas: Add TPS659038 PMIC support
  mfd: palmas: Add SMPS10_BOOST feature
  mfd: palmas: Check if irq is valid
  mfd: lpc_ich: iTCO_wdt patch for Intel Coleto Creek DeviceIDs
  mfd: twl-core: Change TWL6025 references to TWL6032
  mfd: davinci_voicecodec: Fix build breakage
  mfd: vexpress: Make the driver optional for arm and arm64
  mfd: htc-egpio: Use devm_ioremap_nocache() instead of ioremap_nocache()
  mfd: davinci_voicecodec: Convert to use devm_* APIs
  mfd: twl4030-power: Fix relocking on error
  ...
2013-07-10 11:10:27 -07:00
Fabio Estevam 4e80b1880c drivers/rtc/rtc-stmp3xxx.c: check the return value from stmp_reset_block()
stmp_reset_block() may fail, so let's check its return value and
propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-09 10:33:25 -07:00
Xianglong Du e88b815e01 drivers/rtc/rtc-sirfsoc.c: add rtc drivers for CSR SiRFprimaII and SiRFatlasVI
On CSR SiRFprimaII/atlasVI, there is a programmable 16-bit divider
(RTC_DIV) that divides the input 32.768KHz clock to the frequency that
users need (E.g.  1 Hz).  The divided real-time clock will be used to
drive a 32-bit counter (RTC_COUNTER) that provides users with the actual
time.

In each cycle of the divided real-time clock, there is a Hertz interrupt
generated to the RISC.  Users can also configure an alarm (RTC_ALARM).
When RTC_COUNTER matches the alarm, there will be an alarm interrupt
generated to the RISC.

The system RTC can generate an alarm wake-up signal to notify the power
controller to wake up from power saving mode.

Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:01 -07:00
Fabio Porcedda 061d2a3e39 drivers/rtc/rtc-ds1216.c: use module_platform_driver_probe()
Use module_platform_driver_probe() macro which makes the code smaller and
simpler.

Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Hebbar Gururaja 1d2e2b65d0 rtc: omap: restore back (hard-code) wakeup support
rtc-omap driver modules is used both by OMAP1/2, Davinci SoC platforms.

However, rtc wake support on OMAP1 is broken.  Hence the
device_init_wakeup() was removed from rtc-omap driver and moved to
platform board files that supported it (DA850/OMAP-L138).  [1]

However, recently [2] it was suggested that driver should always do a
device_init_wakeup(dev, true). Platforms that don't want/need
wakeup support can disable it from userspace via:

    echo disabled > /sys/devices/.../power/wakeup

Also, with the new DT boot-up, board file doesn't exist and hence there
is no way to have device wakeup support rtc.

The fix for above issues, is to hard code device_init_wakeup() inside
driver and let platforms that don't need this, handle it through the
sysfs power entry.

[1]
https://patchwork.kernel.org/patch/136731/

[2]
http://www.mail-archive.com/davinci-linux-open-source@linux.
davincidsp.com/msg26077.html

Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Renaud Cerrato 18cb6368f0 rtc: add NXP PCF2127 support (i2c)
Added support for NXP PCF2127 RTC (i2c).

[akpm@linux-foundation.org: fix typo, fix warnings]
Signed-off-by: Renaud Cerrato <r.cerrato@til-technologies.fr>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Wei Ni 2c5a5b3091 drivers/rtc/rtc-palmas.c: init wakeup before device register
Enable dev as wakeup device before calling rtc_device_register(), so that
it can create the "wakealarm" sysfs.

Signed-off-by: Wei Ni <wni@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Shuah Khan 92e7f04a7f drivers/rtc/class: convert from Legacy pm ops to dev_pm_ops
Convert drivers/rtc/class to use dev_pm_ops for power management and
remove Legacy PM ops hooks.  With this change, rtc class registers
suspend/resume callbacks via class->pm (dev_pm_ops) instead of Legacy
class->suspend/resume.  When __device_suspend() runs call-backs, it will
find class->pm ops for the rtc class.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Shuah Khan <shuahkhan@gmail.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Jingoo Han 4c5591c1ee drivers/rtc/rtc-pcf2123.c: replace strict_strtoul() with kstrtoul()
The usage of strict_strtoul() is not preferred, because strict_strtoul()
is obsolete.  Thus, kstrtoul() should be used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Chris Brand 0734e27f0b drivers/rtc/interface.c: return -EBUSY, not -EACCES when device is busy
If rtc->irq_task is non-NULL and task is NULL, they always
rtc_irq_set_freq(), whenever err is set to -EBUSY it will then immediately
be set to -EACCES, misleading the caller as to the underlying problem.

Signed-off-by: Chris Brand <chris.brand@broadcom.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Peter Ujfalusi 5ee67484de drivers/rtc/rtc-twl.c: cleanup with module_platform_driver() conversion
Use module_platform_driver() to register the platform driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Peter Ujfalusi d3869ff684 drivers/rtc/rtc-twl.c: fix rtc_reg_map initialization
Initialize the rtc_reg_map in platform_driver's probe function instead at
module_init time.  This way we can make sure that the twl-core has been
already probed and initialized (twl_priv->twl_id is valid) since the
platform device for the RTC driver will be created by the twl-core after
it finished its init.

Reported-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Derek Basehore 998a06051a drivers/rtc/rtc-cmos.c: work around bios clearing rtc control
The bios may clear the rtc control register when resuming the system. Since the
cmos interrupt handler may now be run before the rtc_cmos is resumed, this can
cause the interrupt handler to ignore an alarm since the alarm bit is not set in
the rtc control register. To work around this, check if the rtc_cmos is
suspended and use the stored value for the rtc control register.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Kevin Hilman ae8458949a drivers/rtc/rtc-twl.c: ensure IRQ is wakeup enabled
Currently, the RTC IRQ is never wakeup-enabled so is not capable of
bringing the system out of suspend.

On OMAP platforms, we have gotten by without this because the TWL RTC is
on an I2C-connected chip which is capable of waking up the OMAP via the IO
ring when the OMAP is in low-power states.

However, if the OMAP suspends without hitting the low-power states (and
the IO ring is not enabled), RTC wakeups will not work because the IRQ is
not wakeup enabled.

To fix, ensure the RTC IRQ is wakeup enabled whenever the RTC alarm is
set.

Signed-off-by: Kevin Hilman <khilman@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat ee605e0b2e drivers/rtc/rtc-pcf8583.c: use PTR_RET()
Use of PTR_RET() simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 23f809ee33 drivers/rtc/rtc-pcf8563.c: use PTR_RET()
Use of PTR_RET() simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 8ff7b7d90e drivers/rtc/rtc-m48t35.c: use PTR_RET()
Use of PTR_RET() simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 17cc54b20e drivers/rtc/rtc-isl12022.c: use PTR_RET()
Use of PTR_RET() simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Roman Fietze <roman.fietze@telemotive.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 11f54d0586 drivers/rtc/rtc-da9052.c: use PTR_RET()
Use of PTR_RET() simplifies the code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Jingoo Han ad87a76647 drivers/rtc/rtc-mpc5121.c: use platform_{get,set}_drvdata()
Use the wrapper functions for getting and setting the driver data using
platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev,
so we can directly pass a struct platform_device.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sergey Yanovich dfc657b133 drivers/rtc/rtc-ds1302.c: handle write protection
This chip has a control register and can prevent altering saved clock.
Without this patch we could have:

(arm)root@pac14:~# date
Tue May 21 03:08:27 MSK 2013
(arm)root@pac14:~# /etc/init.d/hwclock.sh show
Tue May 21 11:13:58 2013  -0.067322 seconds
(arm)root@pac14:~# /etc/init.d/hwclock.sh stop
[info] Saving the system clock.
[info] Hardware Clock updated to Tue May 21 03:09:01 MSK 2013.
(arm)root@pac14:~# /etc/init.d/hwclock.sh show
Tue May 21 11:14:15 2013  -0.624272 seconds

The patch enables write access to rtc before the driver tries to write
time and re-disables when time data is written.

Signed-off-by: Sergey Yanovich <ynvich@gmail.com>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Alexandre Torgue 25d053cf10 drivers/rtc/rtc-ab8500.c: add second resolution to rtc driver
Android expects the RTC to have second resolution.  On ab8540 cut2 RTC
block has a new register which allows setting seconds for wakeup alarms.

Existing registers (minutes hi, mid and low) have seen their offsets
changed. Here is the new mapping:
  * AlarmSec     (A) 0x22
  * AlarmMinLow  (M) from 0x8 to 0x23
  * AlarmMinMid  (M) from 0x9 to 0x24
  * AlarmMinHigh (M) from 0xA to 0x25

Signed-off-by: Julien Delacou <julien.delacou@stericsson.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 65ee88c9c6 drivers/rtc/rtc-wm831x.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
Sachin Kamat 7deef7f298 drivers/rtc/rtc-tps80031.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat d55b6643e5 drivers/rtc/rtc-sun4v.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat 15b005b7ef drivers/rtc/rtc-starfire.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat 0cb4b84fd3 drivers/rtc/rtc-snvs.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat 753190928d drivers/rtc/rtc-rx8581.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat 75a6cef3c6 drivers/rtc/rtc-rs5c348.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00
Sachin Kamat c281735c52 drivers/rtc/rtc-rx4581.c: remove empty function
After the switch to devm_* functions and the removal of
rtc_device_unregister(), the 'remove' function does not do anything.
Delete it.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Torben Hohn <torbenh@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:58 -07:00