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297a533b3e
linux/drivers/power
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Lars-Peter Clausen 297a533b3e bq27x00: Cache battery registers 
This patch adds a register cache to the bq27x00 battery driver.
Usually multiple, if not all, power_supply properties are queried at once,
for example when an uevent is generated. Since some registers are used by
multiple properties caching the registers should reduce the number of
reads.

The cache is valid for 5 seconds this roughly matches the internal update
interval of the current register for the bq27000/bq27200.

Fast changing properties(*_NOW) which can be obtained by reading a single
register are not cached.

It will also be used in the follow up patch to check if the battery status
has been changed since the last update to emit power_supply_changed events.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
2011-02-22 11:02:43 +01:00
..
apm_power.c apm_power: Add missing break statement 2010-09-08 14:35:10 +04:00
bq20z75.c bq20z75: Add support for charge properties 2011-01-31 16:18:33 +03:00
bq27x00_battery.c bq27x00: Cache battery registers 2011-02-22 11:02:43 +01:00
collie_battery.c power_supply: Don't use flush_scheduled_work() 2010-12-22 02:39:56 +03:00
da9030_battery.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ds2760_battery.c Merge git://git.infradead.org/battery-2.6 2011-01-14 09:25:59 -08:00
ds2782_battery.c ds2782_battery: Fix units 2010-10-06 17:36:49 +04:00
gpio-charger.c gpio-charger: Fix potential race between irq handler and probe/remove 2010-12-22 02:39:45 +03:00
intel_mid_battery.c Merge git://git.infradead.org/battery-2.6 2011-01-14 09:25:59 -08:00
isp1704_charger.c isp1704_charger: Detect charger after probe 2010-11-18 16:56:21 +03:00
jz4740-battery.c jz4740-battery: Should include linux/io.h 2010-12-22 02:52:25 +03:00
Kconfig bq27x00: Add bq27000 support 2011-02-22 11:02:42 +01:00
Makefile power_supply: Add MAX17042 Fuel Gauge Driver 2011-01-14 18:11:59 +03:00
max8925_power.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
max17040_battery.c i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 2010-06-03 11:33:58 +02:00
max17042_battery.c power_supply: Add MAX17042 Fuel Gauge Driver 2011-01-14 18:11:59 +03:00
olpc_battery.c olpc_battery: Fix up XO-1.5 properties list 2011-01-13 01:41:57 +03:00
pcf50633-charger.c pcf50633-charger: Add missing sysfs_remove_group() 2010-09-22 16:14:49 +04:00
pda_power.c pda_power: Add function callbacks for suspend and resume 2010-04-16 19:14:34 +04:00
pmu_battery.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
power_supply_core.c power_supply: Initialize changed_work before calling device_add 2011-02-22 11:01:42 +01:00
power_supply_leds.c power_supply: Add new LED trigger charging-blink-solid-full 2011-01-31 16:31:51 +03:00
power_supply_sysfs.c power_supply: Ignore -ENODATA errors when generating uevents 2011-02-22 06:47:52 +01:00
power_supply.h power_supply: Use attribute groups 2010-05-19 12:14:28 +04:00
s3c_adc_battery.c Merge git://git.infradead.org/battery-2.6 2011-01-14 09:25:59 -08:00
test_power.c power_supply: Add test_power driver 2010-05-18 19:58:56 +04:00
tosa_battery.c power_supply: Don't use flush_scheduled_work() 2010-12-22 02:39:56 +03:00
twl4030_charger.c power_supply: Add driver for TWL4030/TPS65950 BCI charger 2010-09-30 19:28:09 +04:00
wm97xx_battery.c power_supply: Don't use flush_scheduled_work() 2010-12-22 02:39:56 +03:00
wm831x_backup.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
wm831x_power.c wm831x_power: Add missing kfree(wm831x_power) in wm831x_power_remove() 2010-09-28 15:52:34 +04:00
wm8350_power.c mfd: Update WM8350 drivers for changed interrupt numbers 2010-03-07 22:16:58 +01:00
z2_battery.c power_supply: Don't use flush_scheduled_work() 2010-12-22 02:39:56 +03:00