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power_supply: max17042: Add OF support for setting thresholds 

The commit edd4ab0559 ("power: max17042_battery: add HEALTH and TEMP_*
properties support") added support for setting voltage and temperature
thresholds with platform data. For DeviceTree default of 0 was always
used.

This caused reporting battery health always as over voltage or
over heated.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: edd4ab0559 ("power: max17042_battery: add HEALTH and TEMP_* properties support")
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2015-06-08 10:11:38 +09:00 committed by Sebastian Reichel
parent 5c6e3a97e9
commit a6e6b63ee2
2 changed files with 22 additions and 0 deletions
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13
Documentation/devicetree/bindings/power_supply/max17042_battery.txt
View File

@ -9,10 +9,23 @@ Optional properties :
(datasheet-recommended value is 10000). (datasheet-recommended value is 10000).
Defining this property enables current-sense functionality. Defining this property enables current-sense functionality.
Optional threshold properties :
If skipped the condition won't be reported.
- maxim,cold-temp : Temperature threshold to report battery
as cold (in tenths of degree Celsius).
- maxim,over-heat-temp : Temperature threshold to report battery
as over heated (in tenths of degree Celsius).
- maxim,dead-volt : Voltage threshold to report battery
as dead (in mV).
- maxim,over-volt : Voltage threshold to report battery
as over voltage (in mV).
Example: Example:
battery-charger@36 { battery-charger@36 {
compatible = "maxim,max17042"; compatible = "maxim,max17042";
reg = <0x36>; reg = <0x36>;
maxim,rsns-microohm = <10000>; maxim,rsns-microohm = <10000>;
maxim,over-heat-temp = <600>;
maxim,over-volt = <4300>;
}; };

9
drivers/power/max17042_battery.c
View File

@ -809,6 +809,15 @@ max17042_get_pdata(struct device *dev)
pdata->enable_current_sense = true; pdata->enable_current_sense = true;
} }
if (of_property_read_s32(np, "maxim,cold-temp", &pdata->temp_min))
pdata->temp_min = INT_MIN;
if (of_property_read_s32(np, "maxim,over-heat-temp", &pdata->temp_max))
pdata->temp_max = INT_MAX;
if (of_property_read_s32(np, "maxim,dead-volt", &pdata->vmin))
pdata->vmin = INT_MIN;
if (of_property_read_s32(np, "maxim,over-volt", &pdata->vmax))
pdata->vmax = INT_MAX;
return pdata; return pdata;
} }
#else #else