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Commit 86017c34 authored by Nicholas Troast's avatar Nicholas Troast
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power: introduce SMB138X charger driver 



This driver supports the SMB138X charger device.

Register access is provided by the parent device via regmap. Interrupts
are controlled by the parent device, and handlers are registered by the
SMB138X charger driver.

The power supply framework is used to communicate battery and usb
properties to userspace and other driver consumers such as fuel gauge
and USB.

VBUS regulator is registered for supporting OTG.

CRs-Fixed: 1023141
Change-Id: I36796332af667874c1246ec35984122d45de6938
Signed-off-by: default avatarNicholas Troast <ntroast@codeaurora.org>
parent fc0eb09a

Documentation/devicetree/bindings/power/smb138x-charger.txt

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Qualcomm Technologies, Inc. SMB138X Charger Specific Bindings



SMB138X Charger is an efficient programmable battery charger capable of charging

a high-capacity lithium-ion battery over micro-USB or USB Type-C ultrafast with

Quick Charge 2.0, Quick Charge 3.0 support. Wireless charging features full

A4WP Rezence 1.2, WPC 1.2, and PMA support.



=======================

Required Node Structure

=======================



SMB138X Charger must be described in two levels of devices nodes.



==================================

First Level Node - SMB138X Charger

==================================



Charger specific properties:

- compatible

  Usage:      required

  Value type: <string>

  Definition: String which indicates the charging mode. Can be one of the

	      following:

              Standalone/Parallel Master	- "qcom,smb138x-charger"

	      Parallel Slave			- "qcom,smb138x-parallel-slave"



- qcom,suspend-input

  Usage:      optional

  Value type: <empty>

  Definition: Boolean flag which indicates that the charger should not draw

	      current from any of its input sources (USB, DC).



- qcom,fcc-max-ua

  Usage:      optional

  Value type: <u32>

  Definition: Specifies the maximum fast charge current in micro-amps.



- qcom,usb-icl-ua

  Usage:      optional

  Value type: <u32>

  Definition: Specifies the USB input current limit in micro-amps.



- qcom,dc-icl-ua

  Usage:      optional

  Value type: <u32>

  Definition: Specifies the DC input current limit in micro-amps.



- qcom,micro-usb

  Usage:      optional

  Value type: <empty>

  Definition: Boolean flag which indicates that the connector type is micro usb.



================================================

Second Level Nodes - SMB138X Charger Peripherals

================================================



Peripheral specific properties:

- reg

  Usage:      required

  Value type: <prop-encoded-array>

  Definition: Address and size of the peripheral's register block.



- interrupts

  Usage:      required

  Value type: <prop-encoded-array>

  Definition: Peripheral interrupt specifier.



- interrupt-names

  Usage:      required

  Value type: <stringlist>

  Definition: Interrupt names.  This list must match up 1-to-1 with the

	      interrupts specified in the 'interrupts' property.



=======================================

Second Level Nodes - SMB138X Regulators

=======================================



The following regulator nodes are supported:

"qcom,smb138x-vbus"	- Regulator for enabling VBUS



- regulator-name

  Usage:      required

  Value type: <string>

  Definition: Specifies the name for this regulator.



=======

Example

=======



smb138x_charger: qcom,smb138x-charger {

	compatible = "qcom,qpnp-smb138x-charger";

	#address-cells = <1>;

	#size-cells = <1>;



	qcom,suspend-input;



	qcom,chgr@1000 {

		reg = <0x1000 0x100>;

		interrupts =    <0x10 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x10 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x10 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x10 0x3 IRQ_TYPE_EDGE_BOTH>,

				<0x10 0x4 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "chg-error",

					"chg-state-change",

					"step-chg-state-change",

					"step-chg-soc-update-fail",

					"step-chg-soc-update-request";

	};



	qcom,otg@1100 {

		reg = <0x1100 0x100>;

		interrupts =    <0x11 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x11 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x11 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x11 0x3 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "otg-fail",

					"otg-overcurrent",

					"otg-oc-dis-sw-sts",

					"testmode-change-detect";

	};



	qcom,bat-if@1200 {

		reg = <0x1200 0x100>;

		interrupts =    <0x12 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x12 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x12 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x12 0x3 IRQ_TYPE_EDGE_BOTH>,

				<0x12 0x4 IRQ_TYPE_EDGE_BOTH>,

				<0x12 0x5 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "bat-temp",

					"bat-ocp",

					"bat-ov",

					"bat-low",

					"bat-therm-or-id-missing",

					"bat-terminal-missing";

	};



	qcom,usb-chgpth@1300 {

		reg = <0x1300 0x100>;

		interrupts =    <0x13 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x3 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x4 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x5 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x6 IRQ_TYPE_EDGE_BOTH>,

				<0x13 0x7 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "usbin-collapse",

					"usbin-lt-3p6v",

					"usbin-uv",

					"usbin-ov",

					"usbin-plugin",

					"usbin-src-change",

					"usbin-icl-change",

					"type-c-change";

	};



	qcom,dc-chgpth@1400 {

		reg = <0x1400 0x100>;

		interrupts =    <0x14 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x3 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x4 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x5 IRQ_TYPE_EDGE_BOTH>,

				<0x14 0x6 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "dcin-collapse",

					"dcin-lt-3p6v",

					"dcin-uv",

					"dcin-ov",

					"dcin-plugin",

					"div2-en-dg",

					"dcin-icl-change";

	};



	qcom,chgr-misc@1600 {

		reg = <0x1600 0x100>;

		interrupts =    <0x16 0x0 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x1 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x2 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x3 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x4 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x5 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x6 IRQ_TYPE_EDGE_BOTH>,

				<0x16 0x7 IRQ_TYPE_EDGE_BOTH>;



		interrupt-names =       "wdog-snarl",

					"wdog-bark",

					"aicl-fail",

					"aicl-done",

					"high-duty-cycle",

					"input-current-limiting",

					"temperature-change",

					"switcher-power-ok";

	};

};

drivers/power/Kconfig

+11 −0
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@@ -440,6 +440,17 @@ config SMB1360_CHARGER_FG 
	  The driver reports the status via the power supply framework.

	  The driver reports the status via the power supply framework.

	  A status change triggers an IRQ via the device STAT pin.

	  A status change triggers an IRQ via the device STAT pin.





config SMB138X_CHARGER

	tristate "SMB138X Battery Charger"

	depends on MFD_I2C_PMIC

	help

	  Say Y to include support for SMB138X Battery Charger.

	  SMB1380 is a dual phase 6A battery charger, and SMB1381 is a single

	  phase 5A battery charger.

	  The driver supports charger enable/disable.

	  The driver reports the charger status via the power supply framework.

	  A charger status change triggers an IRQ via the device STAT pin.



config SMB358_CHARGER

config SMB358_CHARGER

	tristate "SMB358 Battery Charger"

	tristate "SMB358 Battery Charger"

	depends on I2C

	depends on I2C

drivers/power/Makefile

+1 −0
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@@ -64,6 +64,7 @@ obj-$(CONFIG_SMB1351_USB_CHARGER) += smb1351-charger.o 
obj-$(CONFIG_SMB350_CHARGER)   += smb350_charger.o

obj-$(CONFIG_SMB350_CHARGER)   += smb350_charger.o

obj-$(CONFIG_SMB135X_CHARGER)   += smb135x-charger.o

obj-$(CONFIG_SMB135X_CHARGER)   += smb135x-charger.o

obj-$(CONFIG_SMB1360_CHARGER_FG) += smb1360-charger-fg.o

obj-$(CONFIG_SMB1360_CHARGER_FG) += smb1360-charger-fg.o

obj-$(CONFIG_SMB138X_CHARGER)	+= smb138x-charger.o pmic-voter.o

obj-$(CONFIG_SMB358_CHARGER)	+= smb358-charger.o

obj-$(CONFIG_SMB358_CHARGER)	+= smb358-charger.o

obj-$(CONFIG_SMB23X_CHARGER)	+= smb23x-charger.o

obj-$(CONFIG_SMB23X_CHARGER)	+= smb23x-charger.o

obj-$(CONFIG_BATTERY_BQ28400)	+= bq28400_battery.o

obj-$(CONFIG_BATTERY_BQ28400)	+= bq28400_battery.o

drivers/power/smb138x-charger.c

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drivers/power/smb138x-charger.h

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