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Commit e0f1abeb authored by Rajanikanth H.V's avatar Rajanikanth H.V Committed by Anton Vorontsov
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ab8500: Add devicetree support for fuelgauge 



- This patch adds device tree support for fuelgauge driver
- optimize bm devices platform_data usage and of_probe(...)
  Note: of_probe() routine for battery managed devices is made
  common across all bm drivers.
- test status:
  - interrupt numbers assigned differs between legacy and FDT mode.

Signed-off-by: default avatarRajanikanth H.V <rajanikanth.hv@stericsson.com>
Signed-off-by: default avatarAnton Vorontsov <anton.vorontsov@linaro.org>
parent e9f14c18

Documentation/devicetree/bindings/mfd/ab8500.txt

+6 −1
Original line number Diff line number Diff line
@@ -24,7 +24,12 @@ ab8500-bm : : : Battery Manager 
ab8500-btemp             :                      :              : Battery Temperature

ab8500-charger           :                      :              : Battery Charger

ab8500-codec             :                      :              : Audio Codec

ab8500-fg                :                      :              : Fuel Gauge

ab8500-fg                : 			: vddadc       : Fuel Gauge

			 : NCONV_ACCU           :	       : Accumulate N Sample Conversion

			 : BATT_OVV		:	       : Battery Over Voltage

			 : LOW_BAT_F		:	       : LOW threshold battery voltage

			 : CC_INT_CALIB		:	       : Coulomb Counter Internal Calibration

			 : CCEOC		:	       : Coulomb Counter End of Conversion

ab8500-gpadc             : HW_CONV_END          : vddadc       : Analogue to Digital Converter

                           SW_CONV_END          :              :

ab8500-gpio              :                      :              : GPIO Controller

Documentation/devicetree/bindings/power_supply/ab8500/fg.txt

0 → 100644
+58 −0
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=== AB8500 Fuel Gauge Driver ===



AB8500 is a mixed signal multimedia and power management

device comprising: power and energy-management-module,

wall-charger, usb-charger, audio codec, general purpose adc,

tvout, clock management and sim card interface.



Fuelgauge support is part of energy-management-modules, other

components of this module are:

main-charger, usb-combo-charger and battery-temperature-monitoring.



The properties below describes the node for fuelgauge driver.



Required Properties:

- compatible = This shall be: "stericsson,ab8500-fg"

- battery = Shall be battery specific information

	Example:

	ab8500_fg {

		compatible = "stericsson,ab8500-fg";

		battery	   = <&ab8500_battery>;

	};



dependent node:

	ab8500_battery: ab8500_battery {

	};

	This node will provide information on 'thermistor interface' and

	'battery technology type' used.



Properties of this node are:

thermistor-on-batctrl:

	A boolean value indicating thermistor interface	to battery



	Note:

	'btemp' and 'batctrl' are the pins interfaced for battery temperature

	measurement, 'btemp' signal is used when NTC(negative temperature

	coefficient) resister is interfaced external to battery whereas

	'batctrl' pin is used when NTC resister is internal to battery.



	Example:

	ab8500_battery: ab8500_battery {

		thermistor-on-batctrl;

	};

	indicates: NTC resister is internal to battery, 'batctrl' is used

		for thermal measurement.



	The absence of property 'thermal-on-batctrl' indicates

	NTC resister is external to battery and  'btemp' signal is used

	for thermal measurement.



battery-type:

	This shall be the battery manufacturing technology type,

	allowed types are:

		"UNKNOWN" "NiMH" "LION" "LIPO" "LiFe" "NiCd" "LiMn"

	Example:

	ab8500_battery: ab8500_battery {

		stericsson,battery-type = "LIPO";

	}

arch/arm/boot/dts/dbx5x0.dtsi

+11 −1
Original line number Diff line number Diff line
@@ -352,7 +352,17 @@ 
					vddadc-supply = <&ab8500_ldo_tvout_reg>;

				};



				ab8500-usb {

				ab8500_battery: ab8500_battery {

					stericsson,battery-type = "LIPO";

					thermistor-on-batctrl;

				};



				ab8500_fg {

					compatible = "stericsson,ab8500-fg";

					battery	   = <&ab8500_battery>;

				};



				ab8500_usb {

					compatible = "stericsson,ab8500-usb";

					interrupts = < 90 0x4

						       96 0x4

drivers/mfd/ab8500-core.c

+5 −0
Original line number Diff line number Diff line
@@ -1051,8 +1051,13 @@ static struct mfd_cell __devinitdata ab8500_bm_devs[] = { 
	},

	{

		.name = "ab8500-fg",

		.of_compatible = "stericsson,ab8500-fg",

		.num_resources = ARRAY_SIZE(ab8500_fg_resources),

		.resources = ab8500_fg_resources,

#ifndef CONFIG_OF

		.platform_data = &ab8500_bm_data,

		.pdata_size = sizeof(ab8500_bm_data),

#endif

	},

	{

		.name = "ab8500-chargalg",

drivers/power/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o 
obj-$(CONFIG_BATTERY_JZ4740)	+= jz4740-battery.o

obj-$(CONFIG_BATTERY_INTEL_MID)	+= intel_mid_battery.o

obj-$(CONFIG_BATTERY_RX51)	+= rx51_battery.o

obj-$(CONFIG_AB8500_BM)		+= ab8500_charger.o ab8500_btemp.o ab8500_fg.o abx500_chargalg.o

obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_btemp.o ab8500_fg.o abx500_chargalg.o

obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o

obj-$(CONFIG_CHARGER_MAX8903)	+= max8903_charger.o

obj-$(CONFIG_CHARGER_TWL4030)	+= twl4030_charger.o