Merge tag 'for-v3.14' of git://git.infradead.org/battery-2.6

Pull battery updates from Dmitry Eremin-Solenikov:
 "I'm picking up power supply maintainership from Anton Vorontov.  Could
  you please pull battery-2.6 git tree changes prepared for the v3.14
  release.

  Highlights:

   - Power supply notifier

   - Several drivers gained DT support

   - Added Maxim 14577 driver

   - Change of maintainer"

* tag 'for-v3.14' of git://git.infradead.org/battery-2.6:
  MAINTAINERS: Pick up power supply maintainership
  max17042_battery: Add IRQF_ONESHOT flag to use default irq handler
  gpio-charger: Support wakeup events
  power_supply: Add charger support for Maxim 14577
  dt: Binding documentation for isp1704 charger
  isp1704_charger: Add DT support
  charger-manager: of_cm_parse_desc() should be static
  bq2415x_charger: Add DT support
  power_supply: Add power_supply_get_by_phandle
  bq2415x_charger: Use power_supply notifier for automode
  power: reset: Add as3722 power-off driver
  mfd: AS3722: Add dt node properties for system power controller
  charger-manager: Support deivce tree in charger manager driver
  charger-manager: Modify the way of checking battery's temperature
  power_supply: Add power_supply notifier

Documentation/devicetree/bindings/mfd/as3722.txt

@@ -112,6 +112,15 @@ Following are properties of regulator subnode.
 		ams,enable-tracking: Enable tracking with SD1, only supported
 			by LDO3.
 
+Power-off:
+=========
+AS3722 supports the system power off by turning off all its rail. This
+is provided through pm_power_off.
+The device node should have the following properties to enable this
+functionality
+ams,system-power-controller: Boolean, to enable the power off functionality
+        through this device.
+
 Example:
 --------
 #include <dt-bindings/mfd/as3722.h>
@@ -120,6 +129,8 @@ ams3722 {
 	compatible = "ams,as3722";
 	reg = <0x48>;
 
+	ams,system-power-controller;
+
 	interrupt-parent = <&intc>;
 	interrupt-controller;
 	#interrupt-cells = <2>;

Documentation/devicetree/bindings/power/isp1704.txt

@@ -0,0 +1,17 @@
+Binding for NXP ISP1704 USB Charger Detection
+
+Required properties:
+- compatible: Should contain one of the following:
+ * "nxp,isp1704"
+- nxp,enable-gpio: Should contain a phandle + gpio-specifier
+  to the GPIO pin connected to the chip's enable pin.
+- usb-phy: Should contain a phandle to the USB PHY
+  the ISP1704 is connected to.
+
+Example:
+
+isp1704 {
+	compatible = "nxp,isp1704";
+	nxp,enable-gpio = <&gpio3 3 GPIO_ACTIVE_LOW>;
+	usb-phy = <&usb2_phy>;
+};

Documentation/devicetree/bindings/power_supply/charger-manager.txt

@@ -0,0 +1,81 @@
+charger-manager bindings
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Required properties :
+ - compatible : "charger-manager"
+ - <>-supply : for regulator consumer
+ - cm-num-chargers : number of chargers
+ - cm-chargers : name of chargers
+ - cm-fuel-gauge : name of battery fuel gauge
+ - subnode <regulator> :
+	- cm-regulator-name : name of charger regulator
+	- subnode <cable> :
+		- cm-cable-name : name of charger cable
+		- cm-cable-extcon : name of extcon dev
+(optional)	- cm-cable-min : minimum current of cable
+(optional)	- cm-cable-max : maximum current of cable
+
+Optional properties :
+ - cm-name : charger manager's name (default : "battery")
+ - cm-poll-mode : polling mode (enum polling_modes)
+ - cm-poll-interval : polling interval
+ - cm-battery-stat : battery status (enum data_source)
+ - cm-fullbatt-* : data for full battery checking
+ - cm-thermal-zone : name of external thermometer's thermal zone
+ - cm-battery-* : threshold battery temperature for charging
+	-cold : critical cold temperature of battery for charging
+	-cold-in-minus : flag that cold temerature is in minus degree
+	-hot : critical hot temperature of battery for charging
+	-temp-diff : temperature difference to allow recharging
+ - cm-dis/charging-max = limits of charging duration
+
+Example :
+	charger-manager@0 {
+		compatible = "charger-manager";
+		chg-reg-supply = <&charger_regulator>;
+
+		cm-name = "battery";
+		/* Always polling ON : 30s */
+		cm-poll-mode = <1>;
+		cm-poll-interval = <30000>;
+
+		cm-fullbatt-vchkdrop-ms = <30000>;
+		cm-fullbatt-vchkdrop-volt = <150000>;
+		cm-fullbatt-soc = <100>;
+
+		cm-battery-stat = <3>;
+
+		cm-num-chargers = <3>;
+		cm-chargers = "charger0", "charger1", "charger2";
+
+		cm-fuel-gauge = "fuelgauge0";
+
+		cm-thermal-zone = "thermal_zone.1"
+		/* in deci centigrade */
+		cm-battery-cold = <50>;
+		cm-battery-cold-in-minus;
+		cm-battery-hot = <800>;
+		cm-battery-temp-diff = <100>;
+
+		/* Allow charging for 5hr */
+		cm-charging-max = <18000000>;
+		/* Allow discharging for 2hr */
+		cm-discharging-max = <7200000>;
+
+		regulator@0 {
+			cm-regulator-name = "chg-reg";
+			cable@0 {
+				cm-cable-name = "USB";
+				cm-cable-extcon = "extcon-dev.0";
+				cm-cable-min = <475000>;
+				cm-cable-max = <500000>;
+			};
+			cable@1 {
+				cm-cable-name = "TA";
+				cm-cable-extcon = "extcon-dev.0";
+				cm-cable-min = <650000>;
+				cm-cable-max = <675000>;
+			};
+		};
+
+	};

MAINTAINERS

@@ -6712,7 +6712,7 @@ F:	include/linux/timer*
 F:	kernel/*timer*
 
 POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS
-M:	Anton Vorontsov <[email protected]>
+M:	Dmitry Eremin-Solenikov <[email protected]>
 M:	David Woodhouse <[email protected]>
 T:	git git://git.infradead.org/battery-2.6.git
 S:	Maintained

drivers/power/Kconfig

@@ -317,6 +317,13 @@ config CHARGER_MANAGER
           runtime and in suspend-to-RAM by waking up the system periodically
           with help of suspend_again support.
 
+config CHARGER_MAX14577
+	tristate "Maxim MAX14577 MUIC battery charger driver"
+	depends on MFD_MAX14577
+	help
+	  Say Y to enable support for the battery charger control sysfs and
+	  platform data of MAX14577 MUICs.
+
 config CHARGER_MAX8997
 	tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
 	depends on MFD_MAX8997 && REGULATOR_MAX8997

drivers/power/Makefile

@@ -48,6 +48,7 @@ obj-$(CONFIG_CHARGER_LP8727)	+= lp8727_charger.o
 obj-$(CONFIG_CHARGER_LP8788)	+= lp8788-charger.o
 obj-$(CONFIG_CHARGER_GPIO)	+= gpio-charger.o
 obj-$(CONFIG_CHARGER_MANAGER)	+= charger-manager.o
+obj-$(CONFIG_CHARGER_MAX14577)	+= max14577_charger.o
 obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
 obj-$(CONFIG_CHARGER_BQ2415X)	+= bq2415x_charger.o

drivers/power/bq2415x_charger.c

@@ -1,7 +1,7 @@
 /*
  * bq2415x charger driver
  *
- * Copyright (C) 2011-2012  Pali Rohár <[email protected]>
+ * Copyright (C) 2011-2013  Pali Rohár <[email protected]>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -170,6 +170,8 @@ struct bq2415x_device {
 	struct bq2415x_platform_data init_data;
 	struct power_supply charger;
 	struct delayed_work work;
+	struct power_supply *notify_psy;
+	struct notifier_block nb;
 	enum bq2415x_mode reported_mode;/* mode reported by hook function */
 	enum bq2415x_mode mode;		/* current configured mode */
 	enum bq2415x_chip chip;
@@ -795,24 +797,53 @@ static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
 
 }
 
-/* hook function called by other driver which set reported mode */
-static void bq2415x_hook_function(enum bq2415x_mode mode, void *data)
+static int bq2415x_notifier_call(struct notifier_block *nb,
+		unsigned long val, void *v)
 {
-	struct bq2415x_device *bq = data;
+	struct bq2415x_device *bq =
+		container_of(nb, struct bq2415x_device, nb);
+	struct power_supply *psy = v;
+	enum bq2415x_mode mode;
+	union power_supply_propval prop;
+	int ret;
+	int mA;
 
-	if (!bq)
-		return;
+	if (val != PSY_EVENT_PROP_CHANGED)
+		return NOTIFY_OK;
+
+	if (psy != bq->notify_psy)
+		return NOTIFY_OK;
+
+	dev_dbg(bq->dev, "notifier call was called\n");
+
+	ret = psy->get_property(psy, POWER_SUPPLY_PROP_CURRENT_MAX, &prop);
+	if (ret != 0)
+		return NOTIFY_OK;
+
+	mA = prop.intval;
+
+	if (mA == 0)
+		mode = BQ2415X_MODE_OFF;
+	else if (mA < 500)
+		mode = BQ2415X_MODE_NONE;
+	else if (mA < 1800)
+		mode = BQ2415X_MODE_HOST_CHARGER;
+	else
+		mode = BQ2415X_MODE_DEDICATED_CHARGER;
+
+	if (bq->reported_mode == mode)
+		return NOTIFY_OK;
 
-	dev_dbg(bq->dev, "hook function was called\n");
 	bq->reported_mode = mode;
 
 	/* if automode is not enabled do not tell about reported_mode */
 	if (bq->automode < 1)
-		return;
+		return NOTIFY_OK;
 
 	sysfs_notify(&bq->charger.dev->kobj, NULL, "reported_mode");
 	bq2415x_set_mode(bq, bq->reported_mode);
 
+	return NOTIFY_OK;
 }
 
 /**** timer functions ****/
@@ -1512,9 +1543,11 @@ static int bq2415x_probe(struct i2c_client *client,
 	int num;
 	char *name;
 	struct bq2415x_device *bq;
+	struct device_node *np = client->dev.of_node;
+	struct bq2415x_platform_data *pdata = client->dev.platform_data;
 
-	if (!client->dev.platform_data) {
-		dev_err(&client->dev, "platform data not set\n");
+	if (!np && !pdata) {
+		dev_err(&client->dev, "platform data missing\n");
 		return -ENODEV;
 	}
 
@@ -1539,6 +1572,17 @@ static int bq2415x_probe(struct i2c_client *client,
 		goto error_2;
 	}
 
+	if (np) {
+		bq->notify_psy = power_supply_get_by_phandle(np, "ti,usb-charger-detection");
+
+		if (!bq->notify_psy)
+			return -EPROBE_DEFER;
+	}
+	else if (pdata->notify_device)
+		bq->notify_psy = power_supply_get_by_name(pdata->notify_device);
+	else
+		bq->notify_psy = NULL;
+
 	i2c_set_clientdata(client, bq);
 
 	bq->id = num;
@@ -1550,8 +1594,34 @@ static int bq2415x_probe(struct i2c_client *client,
 	bq->autotimer = 0;
 	bq->automode = 0;
 
-	memcpy(&bq->init_data, client->dev.platform_data,
-			sizeof(bq->init_data));
+	if (np) {
+		ret = of_property_read_u32(np, "ti,current-limit",
+				&bq->init_data.current_limit);
+		if (ret)
+			return ret;
+		ret = of_property_read_u32(np, "ti,weak-battery-voltage",
+				&bq->init_data.weak_battery_voltage);
+		if (ret)
+			return ret;
+		ret = of_property_read_u32(np, "ti,battery-regulation-voltage",
+				&bq->init_data.battery_regulation_voltage);
+		if (ret)
+			return ret;
+		ret = of_property_read_u32(np, "ti,charge-current",
+				&bq->init_data.charge_current);
+		if (ret)
+			return ret;
+		ret = of_property_read_u32(np, "ti,termination-current",
+				&bq->init_data.termination_current);
+		if (ret)
+			return ret;
+		ret = of_property_read_u32(np, "ti,resistor-sense",
+				&bq->init_data.resistor_sense);
+		if (ret)
+			return ret;
+	} else {
+		memcpy(&bq->init_data, pdata, sizeof(bq->init_data));
+	}
 
 	bq2415x_reset_chip(bq);
 
@@ -1573,16 +1643,20 @@ static int bq2415x_probe(struct i2c_client *client,
 		goto error_4;
 	}
 
-	if (bq->init_data.set_mode_hook) {
-		if (bq->init_data.set_mode_hook(
-				bq2415x_hook_function, bq)) {
-			bq->automode = 1;
-			bq2415x_set_mode(bq, bq->reported_mode);
-			dev_info(bq->dev, "automode enabled\n");
-		} else {
-			bq->automode = -1;
-			dev_info(bq->dev, "automode failed\n");
+	if (bq->notify_psy) {
+		bq->nb.notifier_call = bq2415x_notifier_call;
+		ret = power_supply_reg_notifier(&bq->nb);
+		if (ret) {
+			dev_err(bq->dev, "failed to reg notifier: %d\n", ret);
+			goto error_5;
 		}
+
+		/* Query for initial reported_mode and set it */
+		bq2415x_notifier_call(&bq->nb, PSY_EVENT_PROP_CHANGED, bq->notify_psy);
+		bq2415x_set_mode(bq, bq->reported_mode);
+
+		bq->automode = 1;
+		dev_info(bq->dev, "automode enabled\n");
 	} else {
 		bq->automode = -1;
 		dev_info(bq->dev, "automode not supported\n");
@@ -1594,6 +1668,7 @@ static int bq2415x_probe(struct i2c_client *client,
 	dev_info(bq->dev, "driver registered\n");
 	return 0;
 
+error_5:
 error_4:
 	bq2415x_sysfs_exit(bq);
 error_3:
@@ -1614,8 +1689,8 @@ static int bq2415x_remove(struct i2c_client *client)
 {
 	struct bq2415x_device *bq = i2c_get_clientdata(client);
 
-	if (bq->init_data.set_mode_hook)
-		bq->init_data.set_mode_hook(NULL, NULL);
+	if (bq->notify_psy)
+		power_supply_unreg_notifier(&bq->nb);
 
 	bq2415x_sysfs_exit(bq);
 	bq2415x_power_supply_exit(bq);