linux-stable.git/drivers/power, branch v3.17.3

power: charger-manager: Fix NULL pointer exception with missing cm-fuel-gauge

2014-11-14T18:10:25+00:00

commit 661a88860274e059fdb744dfaa98c045db7b5d1d upstream.

NULL pointer exception happens during charger-manager probe if
'cm-fuel-gauge' property is not present.

[    2.448536] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    2.456572] pgd = c0004000
[    2.459217] [00000000] *pgd=00000000
[    2.462759] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[    2.468047] Modules linked in:
[    2.471089] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc6-00251-ge44cf96cd525-dirty #969
[    2.479765] task: ea890000 ti: ea87a000 task.ti: ea87a000
[    2.485161] PC is at strcmp+0x4/0x30
[    2.488719] LR is at power_supply_match_device_by_name+0x10/0x1c
[    2.494695] pc : []    lr : []    psr: a0000113
[    2.494695] sp : ea87bde0  ip : 00000000  fp : eaa97010
[    2.506150] r10: 00000004  r9 : ea97269c  r8 : ea3bbfd0
[    2.511360] r7 : eaa97000  r6 : c030fe28  r5 : 00000000  r4 : ea3b0000
[    2.517869] r3 : 0000006d  r2 : 00000000  r1 : 00000000  r0 : c057c195
[    2.524381] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    2.531671] Control: 10c5387d  Table: 4000404a  DAC: 00000015
[    2.537399] Process swapper/0 (pid: 1, stack limit = 0xea87a240)
[    2.543388] Stack: (0xea87bde0 to 0xea87c000)
[    2.547733] bde0: ea3b0210 c026b1c8 eaa97010 eaa97000 eaa97010 eabb60a8 ea3b0210 00000000
[    2.555891] be00: 00000008 ea2db210 ea1a3410 c030fee0 ea3bbf90 c03138fc c068969c c013526c
[    2.564050] be20: eaa040c0 00000000 c068969c 00000000 eaa040c0 ea2da300 00000002 00000000
[    2.572208] be40: 00000001 ea2da3c0 00000000 00000001 00000000 eaa97010 c068969c 00000000
[    2.580367] be60: 00000000 c068969c 00000000 00000002 00000000 c026b71c c026b6f0 eaa97010
[    2.588527] be80: c0e82530 c026a330 00000000 eaa97010 c068969c eaa97044 00000000 c061df50
[    2.596686] bea0: ea87a000 c026a4dc 00000000 c068969c c026a448 c0268b5c ea8054a8 eaa8fd50
[    2.604845] bec0: c068969c ea2db180 c06801f8 c0269b18 c0590f68 c068969c c0656c98 c068969c
[    2.613004] bee0: c0656c98 ea3bbe40 c06988c0 c026aaf0 00000000 c0656c98 c0656c98 c00088a4
[    2.621163] bf00: 00000000 c0055f48 00000000 00000004 00000000 ea890000 c05dbc54 c062c178
[    2.629323] bf20: c0603518 c005f674 00000001 ea87a000 eb7ff83b c0476440 00000091 c003d41c
[    2.637482] bf40: c05db344 00000007 eb7ff858 00000007 c065a76c c0647d24 00000007 c062c170
[    2.645642] bf60: c06988c0 00000091 c062c178 c0603518 00000000 c0603cc4 00000007 00000007
[    2.653801] bf80: c0603518 c0c0c0c0 00000000 c0453948 00000000 00000000 00000000 00000000
[    2.661959] bfa0: 00000000 c0453950 00000000 c000e728 00000000 00000000 00000000 00000000
[    2.670118] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    2.678277] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 c0c0c0c0 c0c0c0c0
[    2.686454] [] (strcmp) from [] (power_supply_match_device_by_name+0x10/0x1c)
[    2.695303] [] (power_supply_match_device_by_name) from [] (class_find_device+0x54/0xac)
[    2.705106] [] (class_find_device) from [] (power_supply_get_by_name+0x1c/0x30)
[    2.714137] [] (power_supply_get_by_name) from [] (charger_manager_probe+0x3d8/0xe58)
[    2.723683] [] (charger_manager_probe) from [] (platform_drv_probe+0x2c/0x5c)
[    2.732532] [] (platform_drv_probe) from [] (driver_probe_device+0x10c/0x224)
[    2.741384] [] (driver_probe_device) from [] (__driver_attach+0x94/0x98)
[    2.749813] [] (__driver_attach) from [] (bus_for_each_dev+0x54/0x88)
[    2.757969] [] (bus_for_each_dev) from [] (bus_add_driver+0xd4/0x1d0)
[    2.766123] [] (bus_add_driver) from [] (driver_register+0x78/0xf4)
[    2.774110] [] (driver_register) from [] (do_one_initcall+0x80/0x1bc)
[    2.782276] [] (do_one_initcall) from [] (kernel_init_freeable+0x100/0x1cc)
[    2.790952] [] (kernel_init_freeable) from [] (kernel_init+0x8/0xec)
[    2.799029] [] (kernel_init) from [] (ret_from_fork+0x14/0x2c)
[    2.806572] Code: e12fff1e e1a03000 eafffff7 e4d03001 (e4d12001)
[    2.812832] ---[ end trace 7f12556111b9e7ef ]---

Signed-off-by: Krzysztof Kozlowski 
Fixes: 856ee6115e2d ("charger-manager: Support deivce tree in charger manager driver")
Signed-off-by: Sebastian Reichel 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-08-08T18:14:29+00:00

Pull ARM SoC platform changes from Olof Johansson:
 "This is the bulk of new SoC enablement and other platform changes for
  3.17:

   - Samsung S5PV210 has been converted to DT and multiplatform
   - Clock drivers and bindings for some of the lower-end i.MX 1/2
     platforms
   - Kirkwood, one of the popular Marvell platforms, is folded into the
     mvebu platform code, removing mach-kirkwood
   - Hwmod data for TI AM43xx and DRA7 platforms
   - More additions of Renesas shmobile platform support
   - Removal of plat-samsung contents that can be removed with S5PV210
     being multiplatform/DT-enabled and the other two old platforms
     being removed

  New platforms (most with only basic support right now):

   - Hisilicon X5HD2 settop box chipset is introduced
   - Mediatek MT6589 (mobile chipset) is introduced
   - Broadcom BCM7xxx settop box chipset is introduced

  + as usual a lot other pieces all over the platform code"

* tag 'soc-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (240 commits)
  ARM: hisi: remove smp from machine descriptor
  power: reset: move hisilicon reboot code
  ARM: dts: Add hix5hd2-dkb dts file.
  ARM: debug: Rename Hi3716 to HIX5HD2
  ARM: hisi: enable hix5hd2 SoC
  ARM: hisi: add ARCH_HISI
  MAINTAINERS: add entry for Broadcom ARM STB architecture
  ARM: brcmstb: select GISB arbiter and interrupt drivers
  ARM: brcmstb: add infrastructure for ARM-based Broadcom STB SoCs
  ARM: configs: enable SMP in bcm_defconfig
  ARM: add SMP support for Broadcom mobile SoCs
  Documentation: arm: misc updates to Marvell EBU SoC status
  Documentation: arm: add URLs to public datasheets for the Marvell Armada XP SoC
  ARM: mvebu: fix build without platforms selected
  ARM: mvebu: add cpuidle support for Armada 38x
  ARM: mvebu: add cpuidle support for Armada 370
  cpuidle: mvebu: add Armada 38x support
  cpuidle: mvebu: add Armada 370 support
  cpuidle: mvebu: rename the driver from armada-370-xp to mvebu-v7
  ARM: mvebu: export the SCU address
  ...

power: reset: move hisilicon reboot code

2014-07-31T05:32:21+00:00

Move reboot code from hisilicon platform driver into reset driver.

Signed-off-by: Haojian Zhuang 
Acked-by: Wei Xu 
Signed-off-by: Olof Johansson

ipaq_micro_battery: fix sparse non static symbol warning

2014-07-28T13:36:29+00:00

Fixes the following sparse warnings:

drivers/power/ipaq_micro_battery.c:278:24: warning:
 symbol 'micro_batt_device_driver' was not declared. Should it be static?

Signed-off-by: Wei Yongjun 
Signed-off-by: Sebastian Reichel

power: add driver for battery reading on iPaq h3xxx

2014-07-24T14:20:17+00:00

This adds a driver for reading the battery status of the
battery connected to the Atmel microcontroller on the
iPAQ h3xxx series.

Based on a driver from handhelds.org 2.6.21 kernel, written
by Alessandro GARDICH.

Signed-off-by: Dmitry Artamonow 
Signed-off-by: Linus Walleij 
Signed-off-by: Sebastian Reichel

power: twl4030_charger: detect battery presence prior to enabling charger

2014-07-23T11:58:33+00:00

TWL4030's Battery Charger seems to be designed for non-hotpluggable
batteries.

If battery is not present in the system, BATSTS is always set with the
expectation that software will take actions to move to a required safe
state (could be power down or disable various charger paths).

It does not seem possible even by manipulating the edge detection
of the event (using BCIEDR2 register) to have a consistent hotplug
handling. This seems to be the result of BATSTS interrupt generated
when the thermistor of the battery pack is disconnected from the
dedicated ADIN1 pin. Clearing the status just results in the status
being regenerated by the monitoring ADC(MADC) and disabling the
edges of event just makes hotplug no longer function. The only
other option is to disable the detection of the MADC by disabling
BCIMFEN4::BATSTSMCHGEN (battery presence detector) - but then, we can
never again detect battery reconnection.

So, detect battery presence based on precharge(which is hardware
automatic state) or default main charger configuration at the time of
probe and enable charger logic only if battery was present.

Reported-by: Russell King 
Tested-by: Tony Lindgren 
Signed-off-by: Nishanth Menon 
Signed-off-by: Sebastian Reichel

power: reset: Add reboot driver for brcmstb

2014-07-23T11:49:23+00:00

Add support for reboot functionality on boards with ARM-based
Broadcom STB chipsets. Make it built-in by default for ARCH_BRCMSTB,
but allow it to be configurable under COMPILE_TEST.

Signed-off-by: Marc Carino 
Signed-off-by: Brian Norris 
Signed-off-by: Sebastian Reichel

power_supply: Fix sparse non static symbol warning

2014-07-20T07:22:34+00:00

Fixes the following sparse warnings:

drivers/power/power_supply_core.c:540:5: warning:
 symbol '__power_supply_register' was not declared. Should it be static?

Signed-off-by: Wei Yongjun 
Signed-off-by: Sebastian Reichel

power_supply: Add inlmt,iterm, min/max temp props

2014-07-18T21:40:23+00:00

Add new power supply properties for input current, charge termination
current, min and max temperature

POWER_SUPPLY_PROP_TEMP_MIN - minimum operatable temperature
POWER_SUPPLY_PROP_TEMP_MAX - maximum operatable temperature

POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT - input current limit programmed
by charger. Indicates the input current for a charging source.

POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT - Charge termination current used
to detect the end of charge condition

Signed-off-by: Jenny TC 
Acked-by: Pavel Machek 
Signed-off-by: Sebastian Reichel

charger: tps65090: Allow charger module to be used when no irq

2014-07-18T21:40:23+00:00

On the ARM Chromebook tps65090 has two masters: the AP (the main
processor running linux) and the EC (the embedded controller).  The AP
is allowed to mess with FETs but the EC is in charge of charge control.

The tps65090 interupt line is routed to both the AP and the EC, which
can cause quite a headache.  Having two people adjusting masks and
acking interrupts is a recipe for disaster.

In the shipping kernel we had a hack to have the AP pay attention to
the IRQ but not to ack it.  It also wasn't supposed to configure the
IRQ in any way.  That hack allowed us to detect when the device was
charging without messing with the EC's state.

The current tps65090 infrastructure makes the above difficult, and it
was a bit of a hack to begin with.  Rather than uglify the driver to
support it, just extend the driver's existing notion of "no irq" to
the charger.  This makes the charger code poll every 2 seconds for AC
detect, which is sufficient.

For proper functioning, requires (mfd: tps65090: Don't tell child
devices we have an IRQ if we don't).  If we don't have that patch
we'll simply fail to probe on devices without an interrupt (just like
we did before this patch).

Signed-off-by: Doug Anderson 
Reviewed-by: Javier Martinez Canillas 
Tested-by: Javier Martinez Canillas 
[sre@kernel.org: Use -ENXIO instead of NO_IRQ for missing interrupt,
since NO_IRQ is not available on all architectures.]
Signed-off-by: Sebastian Reichel