linux-toradex.git/drivers/power/ab8500_btemp.c, branch v3.12.32

ab8500_bm: Remove unnecessary platform_set_drvdata()

2013-06-07T00:13:09+00:00

The driver core clears the driver data to NULL after device_release or on
probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound). Thus, it is
not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han 
Acked-by: Lee Jones 
Signed-off-by: Anton Vorontsov

ab8500_btemp: Make ab8500_btemp_get* interfaces public

2013-04-17T00:32:48+00:00

Make ab8500_btemp_get_temp interface public, export it and also export the
ab8500_btemp_get, ab8500_btemp_get_batctrl_temp interfaces, so that the
ab8500 hwmon driver can use them.

Signed-off-by: Hongbo Zhang 
Signed-off-by: Anton Vorontsov

ab8500-bm: Trivially fix up some incorrect and out-of-date comments

2013-03-07T04:35:56+00:00

Some of the comments in the ab8500 drivers reflect the behaviour
of the original device. As this driver now supports newer devices
then these comments are now redundant. Also some IRQ comments are
incorrect.

Signed-off-by: Marcus Cooper 
Signed-off-by: Lee Jones 
Reviewed-by: Rabin VINCENT 
Tested-by: Rabin VINCENT

ab8500-bm: Add support for the new ab8540 platform

2013-03-07T04:35:48+00:00

Provide AB8540 platform specific information required to run the
Battery Management subsystem on AB8540 based devices. For this to
happen we see the introduction of separate platform specific data
structures and a means in which to process them.

Signed-off-by: Lee Jones

ab8500-btemp: Defer btemp filtering while initialising

2013-03-07T04:35:47+00:00

Due to btemp filtering enabled during init, temp values reported
to charge algorithm driver started from 0. As a result,charge
algorithm was going into wrong state and charging was stopped.

Signed-off-by: Rupesh Kumar 
Signed-off-by: Lee Jones 
Reviewed-by: Marcus COOPER 
Reviewed-by: Martin SJOBLOM 
Reviewed-by: Philippe LANGLAIS

ab8500-btemp: Filter btemp readings

2013-03-07T04:35:44+00:00

Battery tempreature readings sometimes fail and results in
a value far from recent values. This patch adds a software
filter that disposes such readings, by allowing direct
updates on temperature only if two samples result in the
same temperature. Else only allow 1 degree change from previous
reported value in the direction of the new measurement.

Signed-off-by: Hakan Berg 
Signed-off-by: Lee Jones 
Reviewed-by: Marcus COOPER 
Reviewed-by: Martin SJOBLOM 
Reviewed-by: Rabin VINCENT

Merge branch 'tb-power-2' of git://git.linaro.org/people/ljones/linux-3.0-ux500

2013-02-03T03:29:13+00:00

Pull a huge ab8500/pm2301 pile of changes from Lee Jones. Lee did an
awesome job cleaning this stuff up and thus brought ab8500 Stericsson's
development tree much closer to the mainline. Even more changes to come,
though.

Conflicts:
	drivers/power/Kconfig

ab8500_btemp: Demote initcall sequence

2013-02-03T03:19:36+00:00

Power supply subsystem creates thermal zone device for the property
'POWER_SUPPLY_PROP_TEMP' which requires thermal subsystem to be ready
before 'ab8500 battery temperature monitor' driver is initialized. ab8500
btemp driver is initialized with subsys_initcall whereas thermal subsystem
is initialized with fs_initcall which causes
thermal_zone_device_register(...) to crash since the required structure
'thermal_class' is not initialized yet:

Unable to handle kernel NULL pointer dereference at virtual address 000000a4
pgd = c0004000
[000000a4] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0    Tainted: G        W     (3.8.0-rc4-00001-g632fda8-dirty #1)
PC is at _raw_spin_lock+0x18/0x54
LR is at get_device_parent+0x50/0x1b8
pc : []    lr : []    psr: 60000013
sp : ef04bdc8  ip : 00000000  fp : c0446180
r10: ef216e38  r9 : c03af5d0  r8 : ef275c18
r7 : 00000000  r6 : c0476c14  r5 : ef275c18  r4 : ef095840
r3 : ef04a000  r2 : 00000001  r1 : 00000000  r0 : 000000a4
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 10c5787d  Table: 0000404a  DAC: 00000015
Process swapper/0 (pid: 1, stack limit = 0xef04a238)
Stack: (0xef04bdc8 to 0xef04c000)
[...]
[] (_raw_spin_lock+0x18/0x54) from [] (get_device_parent+0x50/0x1b8)
[] (get_device_parent+0x50/0x1b8) from [] (device_add+0xa4/0x574)
[] (device_add+0xa4/0x574) from [] (thermal_zone_device_register+0x118/0x938)
[] (thermal_zone_device_register+0x118/0x938) from [] (power_supply_register+0x170/0x1f8)
[] (power_supply_register+0x170/0x1f8) from [] (ab8500_btemp_probe+0x208/0x47c)
[] (ab8500_btemp_probe+0x208/0x47c) from [] (platform_drv_probe+0x14/0x18)
[] (platform_drv_probe+0x14/0x18) from [] (driver_probe_device+0x74/0x20c)
[] (driver_probe_device+0x74/0x20c) from [] (__driver_attach+0x8c/0x90)
[] (__driver_attach+0x8c/0x90) from [] (bus_for_each_dev+0x4c/0x80)
[] (bus_for_each_dev+0x4c/0x80) from [] (bus_add_driver+0x16c/0x23c)
[] (bus_add_driver+0x16c/0x23c) from [] (driver_register+0x78/0x14c)
[] (driver_register+0x78/0x14c) from [] (do_one_initcall+0xfc/0x164)
[] (do_one_initcall+0xfc/0x164) from [] (kernel_init+0x120/0x2b8)
[] (kernel_init+0x120/0x2b8) from [] (ret_from_fork+0x14/0x3c)
Code: e3c3303f e5932004 e2822001 e5832004 (e1903f9f)
---[ end trace ed9df72941b5bada ]---

Signed-off-by: Rajanikanth H.V 
Cc: stable@vger.kernel.org
Signed-off-by: Anton Vorontsov

ab8500-btemp: Adaptation to AB8505 and AB9540 platforms

2013-01-23T11:33:04+00:00

Add AB9540 and AB8505 support to ABx500 BTEMP driver.

Signed-off-by: Rajkumar Kasirajan 
Signed-off-by: Lee Jones 
Reviewed-by: Michel JAOUEN 
Reviewed-by: Marcus COOPER 
Reviewed-by: Jonas ABERG 
Tested-by: Michel JAOUEN 
Tested-by: Jonas ABERG

ab8500_btemp: Remove superfluous BTEMP thermal comp

2013-01-16T01:44:36+00:00

BTEMP thermal compensation factor times 10 is applied in two places, probe
and get_property. Removed from probe.

Signed-off-by: Lee Jones 
Signed-off-by: Hakan Berg 
Reviewed-by: Karl KOMIEROWSKI 
Signed-off-by: Anton Vorontsov