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Code Issues Releases Wiki Activity
linux-stable/drivers/power
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Nishanth Menon 61a7784efd power: twl4030_charger: detect battery presence prior to enabling charger 
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 <linux@arm.linux.org.uk>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-07-23 13:58:33 +02:00
..
avs PM / AVS: SmartReflex: use devm_* API to initialize SmartReflex 2013-06-10 10:50:48 -07:00
reset power: reset: Add reboot driver for brcmstb 2014-07-23 13:49:23 +02:00
88pm860x_battery.c 88pm860x_battery: Remove unnecessary platform_set_drvdata() 2013-06-06 17:12:37 -07:00
88pm860x_charger.c treewide: Fix typo in printk 2013-08-20 12:44:03 +02:00
ab8500_bmdata.c ab8500_bmdata: Export abx500_res_to_temp tables for hwmon 2013-04-16 17:38:10 -07:00
ab8500_btemp.c ab8500_bm: Remove unnecessary platform_set_drvdata() 2013-06-06 17:13:09 -07:00
ab8500_charger.c ab8500-charger: Remove redundant break 2013-10-25 15:36:23 -07:00
ab8500_fg.c tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
abx500_chargalg.c ab8500_bm: Remove unnecessary platform_set_drvdata() 2013-06-06 17:13:09 -07:00
apm_power.c
bq27x00_battery.c bq27000: report missing device better. 2014-07-18 23:40:22 +02:00
bq2415x_charger.c bq2415x_charger: Fix Atomic Sleep Bug 2014-07-18 23:40:22 +02:00
bq24190_charger.c bq24190_charger: Workaround SS definition problem on i386 builds 2013-08-28 17:52:50 -07:00
bq24735-charger.c power_supply: Add support for bq24735 charger 2013-10-25 15:56:51 -07:00
charger-manager.c charger-manager: of_cm_parse_desc() should be static 2013-12-23 18:21:35 -08:00
collie_battery.c power supply: collie_battery: Convert to use dev_pm_ops 2013-08-09 13:41:06 -07:00
da9030_battery.c da9030_battery: Use devm_kzalloc() 2013-03-31 23:25:51 -07:00
da9052-battery.c da9052-battery: Use devm_kzalloc() 2013-03-31 23:25:49 -07:00
ds2760_battery.c ds2760_battery: Use devm_kzalloc() 2013-03-31 23:25:47 -07:00
ds2780_battery.c ds2780_battery: Use devm_kzalloc() 2013-03-31 23:25:45 -07:00
ds2781_battery.c power: remove use of __devexit 2012-11-28 11:43:22 -08:00
ds2782_battery.c power: ds2782_battery: Typo in comment 2014-01-25 15:24:15 +04:00
generic-adc-battery.c generic-adc-battery: Fix checking if none of the channels are supported 2013-06-06 17:33:40 -07:00
goldfish_battery.c goldfish_battery: Use resource_size() 2013-03-31 23:39:40 -07:00
gpio-charger.c gpio-charger: Support wakeup events 2013-12-23 18:54:03 -08:00
intel_mid_battery.c power: Use platform_{get,set}_drvdata() 2013-06-06 17:30:46 -07:00
isp1704_charger.c isp1704_charger: remove useless check in isp1704_charger_probe() 2014-01-25 15:24:15 +04:00
jz4740-battery.c tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15 09:32:21 +09:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-01-25 11:17:34 -08:00
lp8727_charger.c lp8727_charger: Support the device tree feature 2013-06-06 17:19:54 -07:00
lp8788-charger.c lp8788-charger: Use PAGE_SIZE for the sysfs read operation 2013-03-31 23:33:19 -07:00
Makefile power_supply: Add charger support for Maxim 14577 2013-12-23 18:52:19 -08:00
max8903_charger.c max8903_charger: Use devm_kzalloc() 2013-03-31 23:25:38 -07:00
max8925_power.c max8925_power: Fix missing of_node_put 2013-08-27 18:11:54 -07:00
max8997_charger.c max8997_charger: Use devm_kzalloc() 2013-03-31 23:25:36 -07:00
max8998_charger.c max8998_charger: Use devm_kzalloc() 2013-03-31 23:25:34 -07:00
max14577_charger.c power_supply: Add charger support for Maxim 14577 2013-12-23 18:52:19 -08:00
max17040_battery.c power: max17040: Fix NULL pointer dereference when there is no platform_data 2014-02-01 20:11:32 +04:00
max17042_battery.c max17042_battery: Add IRQF_ONESHOT flag to use default irq handler 2013-12-23 18:59:41 -08:00
olpc_battery.c Drivers: power: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
pcf50633-charger.c power_supply: Replace strict_strtoul() with kstrtoul() 2013-06-06 17:35:38 -07:00
pda_power.c usb: power: pda_power: check against CONFIG_USB_PHY 2013-03-18 11:18:05 +02:00
pm2301_charger.c pm2301-charger: Remove unneeded NULL checks 2013-11-12 22:36:34 -08:00
pm2301_charger.h pm2301-charger: Removed unused code from PM2301 driver 2013-03-07 12:35:53 +08:00
pmu_battery.c
power_supply.h
power_supply_core.c power_supply: Fix sparse non static symbol warning 2014-07-20 09:22:34 +02:00
power_supply_leds.c
power_supply_sysfs.c power_supply: Add inlmt,iterm, min/max temp props 2014-07-18 23:40:23 +02:00
rx51_battery.c rx51_battery: convert to iio consumer 2014-07-18 23:40:22 +02:00
s3c_adc_battery.c s3c-adc-battery: Fix possible NULL pointer dereference 2013-03-18 19:43:03 -07:00
sbs-battery.c sbs-battery: Add dt to power_supply struct 2013-06-28 18:20:56 -07:00
smb347-charger.c power: remove use of __devexit_p 2012-11-28 11:43:22 -08:00
test_power.c test_power: Fix a bug in setting module parameter values 2013-03-18 19:27:31 -07:00
tosa_battery.c power_supply: tosa_battery: Get rid of irq_to_gpio usage 2013-08-09 13:41:52 -07:00
tps65090-charger.c charger: tps65090: Allow charger module to be used when no irq 2014-07-18 23:40:23 +02:00
twl4030_charger.c power: twl4030_charger: detect battery presence prior to enabling charger 2014-07-23 13:58:33 +02:00
twl4030_madc_battery.c power: Add twl4030_madc battery driver. 2013-08-30 17:34:52 -07:00
wm97xx_battery.c power: remove use of __devexit 2012-11-28 11:43:22 -08:00
wm831x_backup.c wm831x_backup: Fix wrong kfree call for devdata->backup.name 2013-05-10 11:56:22 -07:00
wm831x_power.c power: remove use of __devexit 2012-11-28 11:43:22 -08:00
wm8350_power.c power: remove use of __devexit 2012-11-28 11:43:22 -08:00
z2_battery.c power: remove use of __devexit 2012-11-28 11:43:22 -08:00