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| author | David Ferguson <ferguson.david@gmail.com> | 2013-11-17 18:55:37 +0400 |
|---|---|---|
| committer | Pavel Kirpichyov <pavel.kirpichyov@gmail.com> | 2013-11-17 19:17:26 +0400 |
| commit | 92673a8d71e7e1a8b4ad34422a1b333be325fd83 (patch) | |
| tree | 48277b13b56dc805e19584bd1427d53cee7c9965 /BoardCommonConfig.mk | |
| parent | e43d6d9042ea080bd5c72acc816f573c07ba24cb (diff) | |
| download | device_samsung_galaxys2-common-92673a8d71e7e1a8b4ad34422a1b333be325fd83.tar.gz device_samsung_galaxys2-common-92673a8d71e7e1a8b4ad34422a1b333be325fd83.tar.bz2 device_samsung_galaxys2-common-92673a8d71e7e1a8b4ad34422a1b333be325fd83.zip | |
[libhealthd] Proper battery paths
* 4.4 introduces a new daemon, healthd, that handles battery status
- resides in: /system/core/healthd
- BatteryMonitor.cpp iterates through all the *directories* under
/sys/class/power_supply looking for a file called 'type'
- if the type == Battery, it assumes this is the location for the
battery stats for the device. Only the first directory that matches
this criteria is used.
- on msm8660/d2/jf/s2 kernels, this search results in:
/sys/class/power_supply/fuelgauge.
- To determine capacity, healthd looks at the contents of the
'capacity' file under this discovered base path. This results
in /sys/class/power_supply/fuelgauge/capacity on msm8660/d2/jf/s2
kernels.
- Unfortunately, this is the wrong path. The capacity file at this
location returns a large negative number.
- Other paths like status, voltage_now, and present are also
incorrectly determined.
* For comparison, in 4.3 battery statistics gathering was handled by
frameworks/base/services/jni/com_android_server_BatteryService.cpp
- BatteryService does a similar search for a file called 'type' with
the contents of 'Battery'
- But the search logic is different here: it takes the *last* path that
matches the criteria.
- This results in the correct /sys/class/power_supply/battery
* This patch overrides the discovery mechanism for battery status completely.
Change-Id: I4579c92bba5596eef4dac67b8c0687be50a1d2f5
Diffstat (limited to 'BoardCommonConfig.mk')
| -rw-r--r-- | BoardCommonConfig.mk | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/BoardCommonConfig.mk b/BoardCommonConfig.mk index 64869ae..c6de213 100644 --- a/BoardCommonConfig.mk +++ b/BoardCommonConfig.mk @@ -168,5 +168,8 @@ BOARD_CHARGER_RES := device/samsung/galaxys2-common/res/charger BOARD_CUSTOM_BOOTIMG_MK := device/samsung/galaxys2-common/shbootimg.mk +# Override healthd HAL +BOARD_HAL_STATIC_LIBRARIES := libhealthd.exynos4 + # Use the non-open-source parts, if they're present -include vendor/samsung/galaxys2-common/BoardConfigVendor.mk |