Merge tag 'for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:
"Battery/charger related:
- cros-peripheral-charger: new driver
- mt6360-charger: new driver
- simple-battery: support reading chemistry info
- max17042-battery: add max77849 support
- sbs-battery: add time_to_empty_now support
- smb347-charger: prepare USB OTG support
- rn5t618: add voltage_now support
- axp288: cleanup & optimizations
- max17042_battery: cleanups
- ab8500: cleanups
- misc minor cleanups and DT binding fixes

reset related:
- tps65086-restart: new driver
- linkstation-poweroff: support NETGEAR ReadyNAS Duo v2"

* tag 'for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (51 commits)
power: supply: core: Fix parsing of battery chemistry/technology
power: supply: max17042_battery: log SOC threshold using debug log level
power: supply: max17042_battery: more robust chip type checks
power: supply: max17042_battery: fix typo in MAx17042_TOFF
power: supply: max17042_battery: clean up MAX17055_V_empty
power: supply: smb347-charger: Implement USB VBUS regulator
power: supply: smb347-charger: Add missing pin control activation
power: supply: smb347-charger: Utilize generic regmap caching
power: supply: smb347-charger: Make smb347_set_writable() IRQ-safe
dt-bindings: power: supply: smb347-charger: Document USB VBUS regulator
power: reset: Add TPS65086 restart driver
dt-bindings: power: supply: max17042: describe interrupt
power: supply: max17042: remove duplicated STATUS bit defines
power: supply: max17042: handle fails of reading status register
power: supply: core: Parse battery chemistry/technology
dt-bindings: power: Extend battery bindings with chemistry
power: reset: linkstation-poweroff: add new device
power: reset: linkstation-poweroff: prepare for new devices
power: supply: bq24735: reorganize ChargeOption command macros
power: supply: rn5t618: Add voltage_now property
...

Documentation/devicetree/bindings/power/supply/battery.yaml

···
   compatible:
     const: simple-battery
 
+  device-chemistry:
+    description: This describes the chemical technology of the battery.
+    oneOf:
+      - const: nickel-cadmium
+      - const: nickel-metal-hydride
+      - const: lithium-ion
+        description: This is a blanket type for all lithium-ion batteries,
+          including those below. If possible, a precise compatible string
+          from below should be used, but sometimes it is unknown which specific
+          lithium ion battery is employed and this wide compatible can be used.
+      - const: lithium-ion-polymer
+      - const: lithium-ion-iron-phosphate
+      - const: lithium-ion-manganese-oxide
+
   over-voltage-threshold-microvolt:
     description: battery over-voltage limit
 

Documentation/devicetree/bindings/power/supply/maxim,max17042.yaml

···
       - maxim,max17047
       - maxim,max17050
       - maxim,max17055
+      - maxim,max77849-battery
 
   reg:
     maxItems: 1
 
   interrupts:
     maxItems: 1
+    description: |
+      The ALRT pin, an open-drain interrupt.
 
   maxim,rsns-microohm:
     $ref: /schemas/types.yaml#/definitions/uint32

Documentation/devicetree/bindings/power/supply/mt6360_charger.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/mt6360_charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Battery charger driver for MT6360 PMIC from MediaTek Integrated.
+
+maintainers:
+  - Gene Chen <[e-mail]>
+
+description: |
+  This module is part of the MT6360 MFD device.
+  Provides Battery Charger, Boost for OTG devices and BC1.2 detection.
+
+properties:
+  compatible:
+    const: mediatek,mt6360-chg
+
+  richtek,vinovp-microvolt:
+    description: Maximum CHGIN regulation voltage in uV.
+    enum: [ 5500000, 6500000, 11000000, 14500000 ]
+
+
+  usb-otg-vbus-regulator:
+    type: object
+    description: OTG boost regulator.
+    $ref: /schemas/regulator/regulator.yaml#
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    mt6360_charger: charger {
+      compatible = "mediatek,mt6360-chg";
+      richtek,vinovp-microvolt = <14500000>;
+
+      otg_vbus_regulator: usb-otg-vbus-regulator {
+        regulator-compatible = "usb-otg-vbus";
+        regulator-name = "usb-otg-vbus";
+        regulator-min-microvolt = <4425000>;
+        regulator-max-microvolt = <5825000>;
+      };
+    };
+...

Documentation/devicetree/bindings/power/supply/summit,smb347-charger.yaml

···
       - 1 # SMB3XX_SOFT_TEMP_COMPENSATE_CURRENT Current compensation
       - 2 # SMB3XX_SOFT_TEMP_COMPENSATE_VOLTAGE Voltage compensation
 
+  summit,inok-polarity:
+    description: |
+      Polarity of INOK signal indicating presence of external power supply.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum:
+      - 0 # SMB3XX_SYSOK_INOK_ACTIVE_LOW
+      - 1 # SMB3XX_SYSOK_INOK_ACTIVE_HIGH
+
+  usb-vbus:
+    $ref: "../../regulator/regulator.yaml#"
+    type: object
+
+    properties:
+      summit,needs-inok-toggle:
+        type: boolean
+        description: INOK signal is fixed and polarity needs to be toggled
+                     in order to enable/disable output mode.
+
+    unevaluatedProperties: false
+
 allOf:
   - if:
       properties:
···
             reg = <0x7f>;
 
             summit,enable-charge-control = <SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH>;
+            summit,inok-polarity = <SMB3XX_SYSOK_INOK_ACTIVE_LOW>;
             summit,chip-temperature-threshold-celsius = <110>;
             summit,mains-current-limit-microamp = <2000000>;
             summit,usb-current-limit-microamp = <500000>;
···
             summit,enable-mains-charging;
 
             monitored-battery = <&battery>;
+
+            usb-vbus {
+                regulator-name = "usb_vbus";
+                regulator-min-microvolt = <5000000>;
+                regulator-max-microvolt = <5000000>;
+                regulator-min-microamp = <750000>;
+                regulator-max-microamp = <750000>;
+                summit,needs-inok-toggle;
+            };
         };
     };
 

Documentation/devicetree/bindings/power/supply/x-powers,axp20x-ac-power-supply.yaml

···
 
 properties:
   compatible:
-    enum:
-      - x-powers,axp202-ac-power-supply
-      - x-powers,axp221-ac-power-supply
-      - x-powers,axp813-ac-power-supply
+    oneOf:
+      - const: x-powers,axp202-ac-power-supply
+      - const: x-powers,axp221-ac-power-supply
+      - items:
+          - const: x-powers,axp803-ac-power-supply
+          - const: x-powers,axp813-ac-power-supply
+      - const: x-powers,axp813-ac-power-supply
 
 required:
   - compatible

Documentation/devicetree/bindings/power/supply/x-powers,axp20x-battery-power-supply.yaml

···
 
 properties:
   compatible:
-    enum:
-      - x-powers,axp209-battery-power-supply
-      - x-powers,axp221-battery-power-supply
-      - x-powers,axp813-battery-power-supply
+    oneOf:
+      - const: x-powers,axp202-battery-power-supply
+      - const: x-powers,axp209-battery-power-supply
+      - const: x-powers,axp221-battery-power-supply
+      - items:
+          - const: x-powers,axp803-battery-power-supply
+          - const: x-powers,axp813-battery-power-supply
+      - const: x-powers,axp813-battery-power-supply
 
 required:
   - compatible

Documentation/devicetree/bindings/power/supply/x-powers,axp20x-usb-power-supply.yaml

···
 
 properties:
   compatible:
-    enum:
-      - x-powers,axp202-usb-power-supply
-      - x-powers,axp221-usb-power-supply
-      - x-powers,axp223-usb-power-supply
-      - x-powers,axp813-usb-power-supply
+    oneOf:
+      - enum:
+          - x-powers,axp202-usb-power-supply
+          - x-powers,axp221-usb-power-supply
+          - x-powers,axp223-usb-power-supply
+          - x-powers,axp813-usb-power-supply
+      - items:
+          - const: x-powers,axp803-usb-power-supply
+          - const: x-powers,axp813-usb-power-supply
 
 
 required:

drivers/iio/adc/rn5t618-adc.c

···
 #include <linux/completion.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
+#include <linux/iio/driver.h>
+#include <linux/iio/machine.h>
 #include <linux/slab.h>
 
 #define RN5T618_ADC_CONVERSION_TIMEOUT   (msecs_to_jiffies(500))
···
 	RN5T618_ADC_CHANNEL(AIN0, IIO_VOLTAGE, "AIN0")
 };
 
+static struct iio_map rn5t618_maps[] = {
+	IIO_MAP("VADP", "rn5t618-power", "vadp"),
+	IIO_MAP("VUSB", "rn5t618-power", "vusb"),
+	{ /* sentinel */ }
+};
+
+static void unregister_map(void *data)
+{
+	struct iio_dev *iio_dev = (struct iio_dev *) data;
+
+	iio_map_array_unregister(iio_dev);
+}
+
 static int rn5t618_adc_probe(struct platform_device *pdev)
 {
 	int ret;
···
 		dev_err(adc->dev, "request irq %d failed: %d\n", adc->irq, ret);
 		return ret;
 	}
+
+	ret = iio_map_array_register(iio_dev, rn5t618_maps);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_add_action_or_reset(adc->dev, unregister_map, iio_dev);
+	if (ret < 0)
+		return ret;
 
 	return devm_iio_device_register(adc->dev, iio_dev);
 }

drivers/power/reset/Kconfig

···
 	help
 	  Reset support for STMicroelectronics boards.
 
+config POWER_RESET_TPS65086
+	bool "TPS65086 restart driver"
+	depends on MFD_TPS65086
+	help
+	  This driver adds support for resetting the TPS65086 PMIC on restart.
+
 config POWER_RESET_VERSATILE
 	bool "ARM Versatile family reboot driver"
 	depends on ARM

drivers/power/reset/Makefile

···
 obj-$(CONFIG_POWER_RESET_REGULATOR) += regulator-poweroff.o
 obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
 obj-$(CONFIG_POWER_RESET_ST) += st-poweroff.o
+obj-$(CONFIG_POWER_RESET_TPS65086) += tps65086-restart.o
 obj-$(CONFIG_POWER_RESET_VERSATILE) += arm-versatile-reboot.o
 obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
 obj-$(CONFIG_POWER_RESET_XGENE) += xgene-reboot.o

drivers/power/reset/linkstation-poweroff.c

···
 #define MII_MARVELL_PHY_PAGE		22
 
 #define MII_PHY_LED_CTRL		16
+#define MII_PHY_LED_POL_CTRL		17
 #define MII_88E1318S_PHY_LED_TCR	18
 #define MII_88E1318S_PHY_WOL_CTRL	16
 #define MII_M1011_IEVENT		19
···
 #define LED2_FORCE_ON					(0x8 << 8)
 #define LEDMASK						GENMASK(11,8)
 
-static struct phy_device *phydev;
+#define MII_88E1318S_PHY_LED_POL_LED2		BIT(4)
 
-static void mvphy_reg_intn(u16 data)
+struct power_off_cfg {
+	char *mdio_node_name;
+	void (*phy_set_reg)(bool restart);
+};
+
+static struct phy_device *phydev;
+static const struct power_off_cfg *cfg;
+
+static void linkstation_mvphy_reg_intn(bool restart)
 {
 	int rc = 0, saved_page;
+	u16 data = 0;
+
+	if (restart)
+		data = MII_88E1318S_PHY_LED_TCR_FORCE_INT;
 
 	saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
 	if (saved_page < 0)
···
 		dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
 }
 
+static void readynas_mvphy_set_reg(bool restart)
+{
+	int rc = 0, saved_page;
+	u16 data = 0;
+
+	if (restart)
+		data = MII_88E1318S_PHY_LED_POL_LED2;
+
+	saved_page = phy_select_page(phydev, MII_MARVELL_LED_PAGE);
+	if (saved_page < 0)
+		goto err;
+
+	/* Set the LED[2].0 Polarity bit to the required state */
+	__phy_modify(phydev, MII_PHY_LED_POL_CTRL,
+		     MII_88E1318S_PHY_LED_POL_LED2, data);
+
+	if (!data) {
+		/* If WOL was enabled and a magic packet was received before powering
+		 * off, we won't be able to wake up by sending another magic packet.
+		 * Clear WOL status.
+		 */
+		__phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_MARVELL_WOL_PAGE);
+		__phy_set_bits(phydev, MII_88E1318S_PHY_WOL_CTRL,
+			       MII_88E1318S_PHY_WOL_CTRL_CLEAR_WOL_STATUS);
+	}
+err:
+	rc = phy_restore_page(phydev, saved_page, rc);
+	if (rc < 0)
+		dev_err(&phydev->mdio.dev, "Write register failed, %d\n", rc);
+}
+
+static const struct power_off_cfg linkstation_power_off_cfg = {
+	.mdio_node_name = "mdio",
+	.phy_set_reg = linkstation_mvphy_reg_intn,
+};
+
+static const struct power_off_cfg readynas_power_off_cfg = {
+	.mdio_node_name = "mdio-bus",
+	.phy_set_reg = readynas_mvphy_set_reg,
+};
+
 static int linkstation_reboot_notifier(struct notifier_block *nb,
 				       unsigned long action, void *unused)
 {
 	if (action == SYS_RESTART)
-		mvphy_reg_intn(MII_88E1318S_PHY_LED_TCR_FORCE_INT);
+		cfg->phy_set_reg(true);
 
 	return NOTIFY_DONE;
 }
···
 static void linkstation_poweroff(void)
 {
 	unregister_reboot_notifier(&linkstation_reboot_nb);
-	mvphy_reg_intn(0);
+	cfg->phy_set_reg(false);
 
 	kernel_restart("Power off");
 }
 
 static const struct of_device_id ls_poweroff_of_match[] = {
-	{ .compatible = "buffalo,ls421d" },
-	{ .compatible = "buffalo,ls421de" },
+	{ .compatible = "buffalo,ls421d",
+	  .data = &linkstation_power_off_cfg,
+	},
+	{ .compatible = "buffalo,ls421de",
+	  .data = &linkstation_power_off_cfg,
+	},
+	{ .compatible = "netgear,readynas-duo-v2",
+	  .data = &readynas_power_off_cfg,
+	},
 	{ },
 };
 
···
 {
 	struct mii_bus *bus;
 	struct device_node *dn;
+	const struct of_device_id *match;
 
 	dn = of_find_matching_node(NULL, ls_poweroff_of_match);
 	if (!dn)
 		return -ENODEV;
 	of_node_put(dn);
 
-	dn = of_find_node_by_name(NULL, "mdio");
+	match = of_match_node(ls_poweroff_of_match, dn);
+	cfg = match->data;
+
+	dn = of_find_node_by_name(NULL, cfg->mdio_node_name);
 	if (!dn)
 		return -ENODEV;
 

drivers/power/reset/tps65086-restart.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Emil Renner Berthing
+ */
+
+#include <linux/mfd/tps65086.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+
+struct tps65086_restart {
+	struct notifier_block handler;
+	struct device *dev;
+};
+
+static int tps65086_restart_notify(struct notifier_block *this,
+				   unsigned long mode, void *cmd)
+{
+	struct tps65086_restart *tps65086_restart =
+		container_of(this, struct tps65086_restart, handler);
+	struct tps65086 *tps65086 = dev_get_drvdata(tps65086_restart->dev->parent);
+	int ret;
+
+	ret = regmap_write(tps65086->regmap, TPS65086_FORCESHUTDN, 1);
+	if (ret) {
+		dev_err(tps65086_restart->dev, "%s: error writing to tps65086 pmic: %d\n",
+			__func__, ret);
+		return NOTIFY_DONE;
+	}
+
+	/* give it a little time */
+	mdelay(200);
+
+	WARN_ON(1);
+
+	return NOTIFY_DONE;
+}
+
+static int tps65086_restart_probe(struct platform_device *pdev)
+{
+	struct tps65086_restart *tps65086_restart;
+	int ret;
+
+	tps65086_restart = devm_kzalloc(&pdev->dev, sizeof(*tps65086_restart), GFP_KERNEL);
+	if (!tps65086_restart)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, tps65086_restart);
+
+	tps65086_restart->handler.notifier_call = tps65086_restart_notify;
+	tps65086_restart->handler.priority = 192;
+	tps65086_restart->dev = &pdev->dev;
+
+	ret = register_restart_handler(&tps65086_restart->handler);
+	if (ret) {
+		dev_err(&pdev->dev, "%s: cannot register restart handler: %d\n",
+			__func__, ret);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int tps65086_restart_remove(struct platform_device *pdev)
+{
+	struct tps65086_restart *tps65086_restart = platform_get_drvdata(pdev);
+	int ret;
+
+	ret = unregister_restart_handler(&tps65086_restart->handler);
+	if (ret) {
+		dev_err(&pdev->dev, "%s: cannot unregister restart handler: %d\n",
+			__func__, ret);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id tps65086_restart_id_table[] = {
+	{ "tps65086-reset", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65086_restart_id_table);
+
+static struct platform_driver tps65086_restart_driver = {
+	.driver = {
+		.name = "tps65086-restart",
+	},
+	.probe = tps65086_restart_probe,
+	.remove = tps65086_restart_remove,
+	.id_table = tps65086_restart_id_table,
+};
+module_platform_driver(tps65086_restart_driver);
+
+MODULE_AUTHOR("Emil Renner Berthing <[e-mail]>");
+MODULE_DESCRIPTION("TPS65086 restart driver");
+MODULE_LICENSE("GPL v2");

drivers/power/supply/Kconfig

···
 
 config AXP288_FUEL_GAUGE
 	tristate "X-Powers AXP288 Fuel Gauge"
-	depends on MFD_AXP20X && IIO
+	depends on MFD_AXP20X && IIO && IOSF_MBI
 	help
 	  Say yes here to have support for X-Power power management IC (PMIC)
 	  Fuel Gauge. The device provides battery statistics and status
···
 	  Battery charger. This driver provides Battery charger power management
 	  functions on the systems.
 
+config CHARGER_MT6360
+	tristate "Mediatek MT6360 Charger Driver"
+	depends on MFD_MT6360
+	depends on REGULATOR
+	select LINEAR_RANGES
+	help
+	  Say Y here to enable MT6360 Charger Part.
+	  The device supports High-Accuracy Voltage/Current Regulation,
+	  Average Input Current Regulation, Battery Temperature Sensing,
+	  Over-Temperature Protection, DPDM Detection for BC1.2.
+
 config CHARGER_QCOM_SMBB
 	tristate "Qualcomm Switch-Mode Battery Charger and Boost"
 	depends on MFD_SPMI_PMIC || COMPILE_TEST
···
 config CHARGER_SMB347
 	tristate "Summit Microelectronics SMB3XX Battery Charger"
 	depends on I2C
+	depends on REGULATOR
 	select REGMAP_I2C
 	help
 	  Say Y to include support for Summit Microelectronics SMB345,
···
 	  what is connected to USB PD ports from the EC and converts
 	  that into power_supply properties.
 
+config CHARGER_CROS_PCHG
+	tristate "ChromeOS EC based peripheral charger"
+	depends on MFD_CROS_EC_DEV
+	default MFD_CROS_EC_DEV
+	help
+	  Say Y here to enable ChromeOS EC based peripheral charge driver.
+	  This driver gets various information about the devices connected to
+	  the peripheral charge ports from the EC and converts that into
+	  power_supply properties.
+
 config CHARGER_SC2731
 	tristate "Spreadtrum SC2731 charger driver"
 	depends on MFD_SC27XX_PMIC || COMPILE_TEST
···
 config RN5T618_POWER
 	tristate "RN5T618 charger/fuel gauge support"
 	depends on MFD_RN5T618
+	depends on RN5T618_ADC
+	depends on IIO
 	help
 	  Say Y here to have support for RN5T618 PMIC family fuel gauge and charger.
 	  This driver can also be built as a module. If so, the module will be

drivers/power/supply/Makefile

···
 obj-$(CONFIG_CHARGER_88PM860X)	+= 88pm860x_charger.o
 obj-$(CONFIG_CHARGER_PCF50633)	+= pcf50633-charger.o
 obj-$(CONFIG_BATTERY_RX51)	+= rx51_battery.o
-obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o abx500_chargalg.o
+obj-$(CONFIG_AB8500_BM)		+= ab8500_bmdata.o ab8500_charger.o ab8500_fg.o ab8500_btemp.o ab8500_chargalg.o
 obj-$(CONFIG_CHARGER_CPCAP)	+= cpcap-charger.o
 obj-$(CONFIG_CHARGER_ISP1704)	+= isp1704_charger.o
 obj-$(CONFIG_CHARGER_MAX8903)	+= max8903_charger.o
···
 obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
 obj-$(CONFIG_CHARGER_MP2629)	+= mp2629_charger.o
+obj-$(CONFIG_CHARGER_MT6360)	+= mt6360_charger.o
 obj-$(CONFIG_CHARGER_QCOM_SMBB)	+= qcom_smbb.o
 obj-$(CONFIG_CHARGER_BQ2415X)	+= bq2415x_charger.o
 obj-$(CONFIG_CHARGER_BQ24190)	+= bq24190_charger.o
···
 obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o
 obj-$(CONFIG_AXP288_CHARGER)	+= axp288_charger.o
 obj-$(CONFIG_CHARGER_CROS_USBPD)	+= cros_usbpd-charger.o
+obj-$(CONFIG_CHARGER_CROS_PCHG)	+= cros_peripheral_charger.o
 obj-$(CONFIG_CHARGER_SC2731)	+= sc2731_charger.o
 obj-$(CONFIG_FUEL_GAUGE_SC27XX)	+= sc27xx_fuel_gauge.o
 obj-$(CONFIG_CHARGER_UCS1002)	+= ucs1002_power.o

drivers/power/supply/ab8500-bm.h

···
 
 /*
  * ADC for the battery thermistor.
- * When using the ABx500_ADC_THERM_BATCTRL the battery ID resistor is combined
+ * When using the AB8500_ADC_THERM_BATCTRL the battery ID resistor is combined
  * with a NTC resistor to both identify the battery and to measure its
  * temperature. Different phone manufactures uses different techniques to both
  * identify the battery and to read its temperature.
  */
-enum abx500_adc_therm {
-	ABx500_ADC_THERM_BATCTRL,
-	ABx500_ADC_THERM_BATTEMP,
+enum ab8500_adc_therm {
+	AB8500_ADC_THERM_BATCTRL,
+	AB8500_ADC_THERM_BATTEMP,
 };
 
 /**
- * struct abx500_res_to_temp - defines one point in a temp to res curve. To
+ * struct ab8500_res_to_temp - defines one point in a temp to res curve. To
  * be used in battery packs that combines the identification resistor with a
  * NTC resistor.
  * @temp:			battery pack temperature in Celsius
  * @resist:			NTC resistor net total resistance
  */
-struct abx500_res_to_temp {
+struct ab8500_res_to_temp {
 	int temp;
 	int resist;
 };
 
 /**
- * struct abx500_v_to_cap - Table for translating voltage to capacity
+ * struct ab8500_v_to_cap - Table for translating voltage to capacity
  * @voltage:		Voltage in mV
  * @capacity:		Capacity in percent
  */
-struct abx500_v_to_cap {
+struct ab8500_v_to_cap {
 	int voltage;
 	int capacity;
 };
 
 /* Forward declaration */
-struct abx500_fg;
+struct ab8500_fg;
 
 /**
- * struct abx500_fg_parameters - Fuel gauge algorithm parameters, in seconds
+ * struct ab8500_fg_parameters - Fuel gauge algorithm parameters, in seconds
  * if not specified
  * @recovery_sleep_timer:	Time between measurements while recovering
  * @recovery_total_time:	Total recovery time
···
  * @pcut_max_restart:		Max number of restarts
  * @pcut_debounce_time:		Sets battery debounce time
  */
-struct abx500_fg_parameters {
+struct ab8500_fg_parameters {
 	int recovery_sleep_timer;
 	int recovery_total_time;
 	int init_timer;
···
 };
 
 /**
- * struct abx500_charger_maximization - struct used by the board config.
+ * struct ab8500_charger_maximization - struct used by the board config.
  * @use_maxi:		Enable maximization for this battery type
  * @maxi_chg_curr:	Maximum charger current allowed
  * @maxi_wait_cycles:	cycles to wait before setting charger current
  * @charger_curr_step	delta between two charger current settings (mA)
  */
-struct abx500_maxim_parameters {
+struct ab8500_maxim_parameters {
 	bool ena_maxi;
 	int chg_curr;
 	int wait_cycles;
···
 };
 
 /**
- * struct abx500_battery_type - different batteries supported
+ * struct ab8500_battery_type - different batteries supported
  * @name:			battery technology
  * @resis_high:			battery upper resistance limit
  * @resis_low:			battery lower resistance limit
···
  * @n_batres_tbl_elements	number of elements in the batres_tbl
  * @batres_tbl			battery internal resistance vs temperature table
  */
-struct abx500_battery_type {
+struct ab8500_battery_type {
 	int name;
 	int resis_high;
 	int resis_low;
···
 	int low_high_vol_lvl;
 	int battery_resistance;
 	int n_temp_tbl_elements;
-	const struct abx500_res_to_temp *r_to_t_tbl;
+	const struct ab8500_res_to_temp *r_to_t_tbl;
 	int n_v_cap_tbl_elements;
-	const struct abx500_v_to_cap *v_to_cap_tbl;
+	const struct ab8500_v_to_cap *v_to_cap_tbl;
 	int n_batres_tbl_elements;
 	const struct batres_vs_temp *batres_tbl;
-};
-
-/**
- * struct abx500_bm_capacity_levels - abx500 capacity level data
- * @critical:		critical capacity level in percent
- * @low:		low capacity level in percent
- * @normal:		normal capacity level in percent
- * @high:		high capacity level in percent
- * @full:		full capacity level in percent
- */
-struct abx500_bm_capacity_levels {
-	int critical;
-	int low;
-	int normal;
-	int high;
-	int full;
-};
-
-/**
- * struct abx500_bm_charger_parameters - Charger specific parameters
- * @usb_volt_max:	maximum allowed USB charger voltage in mV
- * @usb_curr_max:	maximum allowed USB charger current in mA
- * @ac_volt_max:	maximum allowed AC charger voltage in mV
- * @ac_curr_max:	maximum allowed AC charger current in mA
- */
-struct abx500_bm_charger_parameters {
-	int usb_volt_max;
-	int usb_curr_max;
-	int ac_volt_max;
-	int ac_curr_max;
-};
-
-/**
- * struct abx500_bm_data - abx500 battery management data
- * @temp_under		under this temp, charging is stopped
- * @temp_low		between this temp and temp_under charging is reduced
- * @temp_high		between this temp and temp_over charging is reduced
- * @temp_over		over this temp, charging is stopped
- * @temp_now		present battery temperature
- * @temp_interval_chg	temperature measurement interval in s when charging
- * @temp_interval_nochg	temperature measurement interval in s when not charging
- * @main_safety_tmr_h	safety timer for main charger
- * @usb_safety_tmr_h	safety timer for usb charger
- * @bkup_bat_v		voltage which we charge the backup battery with
- * @bkup_bat_i		current which we charge the backup battery with
- * @no_maintenance	indicates that maintenance charging is disabled
- * @capacity_scaling    indicates whether capacity scaling is to be used
- * @abx500_adc_therm	placement of thermistor, batctrl or battemp adc
- * @chg_unknown_bat	flag to enable charging of unknown batteries
- * @enable_overshoot	flag to enable VBAT overshoot control
- * @auto_trig		flag to enable auto adc trigger
- * @fg_res		resistance of FG resistor in 0.1mOhm
- * @n_btypes		number of elements in array bat_type
- * @batt_id		index of the identified battery in array bat_type
- * @interval_charging	charge alg cycle period time when charging (sec)
- * @interval_not_charging charge alg cycle period time when not charging (sec)
- * @temp_hysteresis	temperature hysteresis
- * @gnd_lift_resistance	Battery ground to phone ground resistance (mOhm)
- * @n_chg_out_curr		number of elements in array chg_output_curr
- * @n_chg_in_curr		number of elements in array chg_input_curr
- * @chg_output_curr	charger output current level map
- * @chg_input_curr		charger input current level map
- * @maxi		maximization parameters
- * @cap_levels		capacity in percent for the different capacity levels
- * @bat_type		table of supported battery types
- * @chg_params		charger parameters
- * @fg_params		fuel gauge parameters
- */
-struct abx500_bm_data {
-	int temp_under;
-	int temp_low;
-	int temp_high;
-	int temp_over;
-	int temp_now;
-	int temp_interval_chg;
-	int temp_interval_nochg;
-	int main_safety_tmr_h;
-	int usb_safety_tmr_h;
-	int bkup_bat_v;
-	int bkup_bat_i;
-	bool no_maintenance;
-	bool capacity_scaling;
-	bool chg_unknown_bat;
-	bool enable_overshoot;
-	bool auto_trig;
-	enum abx500_adc_therm adc_therm;
-	int fg_res;
-	int n_btypes;
-	int batt_id;
-	int interval_charging;
-	int interval_not_charging;
-	int temp_hysteresis;
-	int gnd_lift_resistance;
-	int n_chg_out_curr;
-	int n_chg_in_curr;
-	int *chg_output_curr;
-	int *chg_input_curr;
-	const struct abx500_maxim_parameters *maxi;
-	const struct abx500_bm_capacity_levels *cap_levels;
-	struct abx500_battery_type *bat_type;
-	const struct abx500_bm_charger_parameters *chg_params;
-	const struct abx500_fg_parameters *fg_params;
-};
-
-enum {
-	NTC_EXTERNAL = 0,
-	NTC_INTERNAL,
-};
-
-/**
- * struct res_to_temp - defines one point in a temp to res curve. To
- * be used in battery packs that combines the identification resistor with a
- * NTC resistor.
- * @temp:			battery pack temperature in Celsius
- * @resist:			NTC resistor net total resistance
- */
-struct res_to_temp {
-	int temp;
-	int resist;
-};
-
-/**
- * struct batres_vs_temp - defines one point in a temp vs battery internal
- * resistance curve.
- * @temp:			battery pack temperature in Celsius
- * @resist:			battery internal reistance in mOhm
- */
-struct batres_vs_temp {
-	int temp;
-	int resist;
-};
-
-/* Forward declaration */
-struct ab8500_fg;
-
-/**
- * struct ab8500_fg_parameters - Fuel gauge algorithm parameters, in seconds
- * if not specified
- * @recovery_sleep_timer:	Time between measurements while recovering
- * @recovery_total_time:	Total recovery time
- * @init_timer:			Measurement interval during startup
- * @init_discard_time:		Time we discard voltage measurement at startup
- * @init_total_time:		Total init time during startup
- * @high_curr_time:		Time current has to be high to go to recovery
- * @accu_charging:		FG accumulation time while charging
- * @accu_high_curr:		FG accumulation time in high current mode
- * @high_curr_threshold:	High current threshold, in mA
- * @lowbat_threshold:		Low battery threshold, in mV
- * @battok_falling_th_sel0	Threshold in mV for battOk signal sel0
- *				Resolution in 50 mV step.
- * @battok_raising_th_sel1	Threshold in mV for battOk signal sel1
- *				Resolution in 50 mV step.
- * @user_cap_limit		Capacity reported from user must be within this
- *				limit to be considered as sane, in percentage
- *				points.
- * @maint_thres			This is the threshold where we stop reporting
- *				battery full while in maintenance, in per cent
- * @pcut_enable:			Enable power cut feature in ab8505
- * @pcut_max_time:		Max time threshold
- * @pcut_flag_time:		Flagtime threshold
- * @pcut_max_restart:		Max number of restarts
- * @pcut_debunce_time:	Sets battery debounce time
- */
-struct ab8500_fg_parameters {
-	int recovery_sleep_timer;
-	int recovery_total_time;
-	int init_timer;
-	int init_discard_time;
-	int init_total_time;
-	int high_curr_time;
-	int accu_charging;
-	int accu_high_curr;
-	int high_curr_threshold;
-	int lowbat_threshold;
-	int battok_falling_th_sel0;
-	int battok_raising_th_sel1;
-	int user_cap_limit;
-	int maint_thres;
-	bool pcut_enable;
-	u8 pcut_max_time;
-	u8 pcut_flag_time;
-	u8 pcut_max_restart;
-	u8 pcut_debunce_time;
-};
-
-/**
- * struct ab8500_charger_maximization - struct used by the board config.
- * @use_maxi:		Enable maximization for this battery type
- * @maxi_chg_curr:	Maximum charger current allowed
- * @maxi_wait_cycles:	cycles to wait before setting charger current
- * @charger_curr_step	delta between two charger current settings (mA)
- */
-struct ab8500_maxim_parameters {
-	bool ena_maxi;
-	int chg_curr;
-	int wait_cycles;
-	int charger_curr_step;
 };
 
 /**
···
  * @temp_low		between this temp and temp_under charging is reduced
  * @temp_high		between this temp and temp_over charging is reduced
  * @temp_over		over this temp, charging is stopped
+ * @temp_now		present battery temperature
  * @temp_interval_chg	temperature measurement interval in s when charging
  * @temp_interval_nochg	temperature measurement interval in s when not charging
  * @main_safety_tmr_h	safety timer for main charger
···
  * @bkup_bat_i		current which we charge the backup battery with
  * @no_maintenance	indicates that maintenance charging is disabled
  * @capacity_scaling    indicates whether capacity scaling is to be used
- * @adc_therm		placement of thermistor, batctrl or battemp adc
+ * @ab8500_adc_therm	placement of thermistor, batctrl or battemp adc
  * @chg_unknown_bat	flag to enable charging of unknown batteries
  * @enable_overshoot	flag to enable VBAT overshoot control
+ * @auto_trig		flag to enable auto adc trigger
  * @fg_res		resistance of FG resistor in 0.1mOhm
  * @n_btypes		number of elements in array bat_type
  * @batt_id		index of the identified battery in array bat_type
···
  * @interval_not_charging charge alg cycle period time when not charging (sec)
  * @temp_hysteresis	temperature hysteresis
  * @gnd_lift_resistance	Battery ground to phone ground resistance (mOhm)
- * @maxi:		maximization parameters
+ * @n_chg_out_curr		number of elements in array chg_output_curr
+ * @n_chg_in_curr		number of elements in array chg_input_curr
+ * @chg_output_curr	charger output current level map
+ * @chg_input_curr		charger input current level map
+ * @maxi		maximization parameters
  * @cap_levels		capacity in percent for the different capacity levels
  * @bat_type		table of supported battery types
  * @chg_params		charger parameters
···
 	int temp_low;
 	int temp_high;
 	int temp_over;
+	int temp_now;
 	int temp_interval_chg;
 	int temp_interval_nochg;
 	int main_safety_tmr_h;
···
 	bool capacity_scaling;
 	bool chg_unknown_bat;
 	bool enable_overshoot;
-	enum abx500_adc_therm adc_therm;
+	bool auto_trig;
+	enum ab8500_adc_therm adc_therm;
 	int fg_res;
 	int n_btypes;
 	int batt_id;
···
 	int interval_not_charging;
 	int temp_hysteresis;
 	int gnd_lift_resistance;
+	int n_chg_out_curr;
+	int n_chg_in_curr;
+	int *chg_output_curr;
+	int *chg_input_curr;
 	const struct ab8500_maxim_parameters *maxi;
 	const struct ab8500_bm_capacity_levels *cap_levels;
+	struct ab8500_battery_type *bat_type;
 	const struct ab8500_bm_charger_parameters *chg_params;
 	const struct ab8500_fg_parameters *fg_params;
 };
 
-extern struct abx500_bm_data ab8500_bm_data;
+enum {
+	NTC_EXTERNAL = 0,
+	NTC_INTERNAL,
+};
+
+/**
+ * struct res_to_temp - defines one point in a temp to res curve. To
+ * be used in battery packs that combines the identification resistor with a
+ * NTC resistor.
+ * @temp:			battery pack temperature in Celsius
+ * @resist:			NTC resistor net total resistance
+ */
+struct res_to_temp {
+	int temp;
+	int resist;
+};
+
+/**
+ * struct batres_vs_temp - defines one point in a temp vs battery internal
+ * resistance curve.
+ * @temp:			battery pack temperature in Celsius
+ * @resist:			battery internal reistance in mOhm
+ */
+struct batres_vs_temp {
+	int temp;
+	int resist;
+};
+
+/* Forward declaration */
+struct ab8500_fg;
+
+extern struct ab8500_bm_data ab8500_bm_data;
 
 void ab8500_charger_usb_state_changed(u8 bm_usb_state, u16 mA);
 struct ab8500_fg *ab8500_fg_get(void);
···
 int ab8500_fg_inst_curr_done(struct ab8500_fg *di);
 int ab8500_bm_of_probe(struct device *dev,
 		       struct device_node *np,
-		       struct abx500_bm_data *bm);
+		       struct ab8500_bm_data *bm);
 
 extern struct platform_driver ab8500_fg_driver;
 extern struct platform_driver ab8500_btemp_driver;
-extern struct platform_driver abx500_chargalg_driver;
+extern struct platform_driver ab8500_chargalg_driver;
 
 #endif /* _AB8500_CHARGER_H_ */

drivers/power/supply/ab8500_bmdata.c

···
 #include <linux/export.h>
 #include <linux/power_supply.h>
 #include <linux/of.h>
-#include <linux/mfd/abx500.h>
-#include <linux/mfd/abx500/ab8500.h>
 
 #include "ab8500-bm.h"
 
···
  * Note that the res_to_temp table must be strictly sorted by falling resistance
  * values to work.
  */
-const struct abx500_res_to_temp ab8500_temp_tbl_a_thermistor[] = {
+const struct ab8500_res_to_temp ab8500_temp_tbl_a_thermistor[] = {
 	{-5, 53407},
 	{ 0, 48594},
 	{ 5, 43804},
···
 const int ab8500_temp_tbl_a_size = ARRAY_SIZE(ab8500_temp_tbl_a_thermistor);
 EXPORT_SYMBOL(ab8500_temp_tbl_a_size);
 
-const struct abx500_res_to_temp ab8500_temp_tbl_b_thermistor[] = {
+const struct ab8500_res_to_temp ab8500_temp_tbl_b_thermistor[] = {
 	{-5, 200000},
 	{ 0, 159024},
 	{ 5, 151921},
···
 const int ab8500_temp_tbl_b_size = ARRAY_SIZE(ab8500_temp_tbl_b_thermistor);
 EXPORT_SYMBOL(ab8500_temp_tbl_b_size);
 
-static const struct abx500_v_to_cap cap_tbl_a_thermistor[] = {
+static const struct ab8500_v_to_cap cap_tbl_a_thermistor[] = {
 	{4171,	100},
 	{4114,	 95},
 	{4009,	 83},
···
 	{3247,	  0},
 };
 
-static const struct abx500_v_to_cap cap_tbl_b_thermistor[] = {
+static const struct ab8500_v_to_cap cap_tbl_b_thermistor[] = {
 	{4161,	100},
 	{4124,	 98},
 	{4044,	 90},
···
 	{3250,	  0},
 };
 
-static const struct abx500_v_to_cap cap_tbl[] = {
+static const struct ab8500_v_to_cap cap_tbl[] = {
 	{4186,	100},
 	{4163,	 99},
 	{4114,	 95},
···
  * Note that the res_to_temp table must be strictly sorted by falling
  * resistance values to work.
  */
-static const struct abx500_res_to_temp temp_tbl[] = {
+static const struct ab8500_res_to_temp temp_tbl[] = {
 	{-5, 214834},
 	{ 0, 162943},
 	{ 5, 124820},
···
 	{-20, 180},
 };
 
-static struct abx500_battery_type bat_type_thermistor[] = {
+static struct ab8500_battery_type bat_type_thermistor[] = {
 	[BATTERY_UNKNOWN] = {
 		/* First element always represent the UNKNOWN battery */
 		.name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
···
 	},
 };
 
-static struct abx500_battery_type bat_type_ext_thermistor[] = {
+static struct ab8500_battery_type bat_type_ext_thermistor[] = {
 	[BATTERY_UNKNOWN] = {
 		/* First element always represent the UNKNOWN battery */
 		.name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
···
 	},
 };
 
-static const struct abx500_bm_capacity_levels cap_levels = {
+static const struct ab8500_bm_capacity_levels cap_levels = {
 	.critical	= 2,
 	.low		= 10,
 	.normal		= 70,
···
 	.full		= 100,
 };
 
-static const struct abx500_fg_parameters fg = {
+static const struct ab8500_fg_parameters fg = {
 	.recovery_sleep_timer = 10,
 	.recovery_total_time = 100,
 	.init_timer = 1,
···
 	.pcut_debounce_time = 2,
 };
 
-static const struct abx500_maxim_parameters ab8500_maxi_params = {
+static const struct ab8500_maxim_parameters ab8500_maxi_params = {
 	.ena_maxi = true,
 	.chg_curr = 910,
 	.wait_cycles = 10,
 	.charger_curr_step = 100,
 };
 
-static const struct abx500_bm_charger_parameters chg = {
+static const struct ab8500_bm_charger_parameters chg = {
 	.usb_volt_max		= 5500,
 	.usb_curr_max		= 1500,
 	.ac_volt_max		= 7500,
···
         700,    800,    900,    1000,   1100,   1300,   1400,   1500,
 };
 
-struct abx500_bm_data ab8500_bm_data = {
+struct ab8500_bm_data ab8500_bm_data = {
 	.temp_under             = 3,
 	.temp_low               = 8,
 	.temp_high              = 43,
···
 	.bkup_bat_i             = BUP_ICH_SEL_150UA,
 	.no_maintenance         = false,
 	.capacity_scaling       = false,
-	.adc_therm              = ABx500_ADC_THERM_BATCTRL,
+	.adc_therm              = AB8500_ADC_THERM_BATCTRL,
 	.chg_unknown_bat        = false,
 	.enable_overshoot       = false,
 	.fg_res                 = 100,
···
 
 int ab8500_bm_of_probe(struct device *dev,
 		       struct device_node *np,
-		       struct abx500_bm_data *bm)
+		       struct ab8500_bm_data *bm)
 {
 	const struct batres_vs_temp *tmp_batres_tbl;
 	struct device_node *battery_node;
···
 	} else {
 		bm->n_btypes   = 4;
 		bm->bat_type   = bat_type_ext_thermistor;
-		bm->adc_therm  = ABx500_ADC_THERM_BATTEMP;
+		bm->adc_therm  = AB8500_ADC_THERM_BATTEMP;
 		tmp_batres_tbl = temp_to_batres_tbl_ext_thermistor;
 	}
 

drivers/power/supply/ab8500_btemp.c

···
 #include <linux/mfd/abx500.h>
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/iio/consumer.h>
+#include <linux/fixp-arith.h>
 
 #include "ab8500-bm.h"
 
···
 	struct iio_channel *btemp_ball;
 	struct iio_channel *bat_ctrl;
 	struct ab8500_fg *fg;
-	struct abx500_bm_data *bm;
+	struct ab8500_bm_data *bm;
 	struct power_supply *btemp_psy;
 	struct ab8500_btemp_events events;
 	struct ab8500_btemp_ranges btemp_ranges;
···
 		return (450000 * (v_batctrl)) / (1800 - v_batctrl);
 	}
 
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL) {
+	if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL) {
 		/*
 		 * If the battery has internal NTC, we use the current
 		 * source to calculate the resistance.
···
 		return 0;
 
 	/* Only do this for batteries with internal NTC */
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) {
+	if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && enable) {
 
 		if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_7UA)
 			curr = BAT_CTRL_7U_ENA;
···
 				__func__);
 			goto disable_curr_source;
 		}
-	} else if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) {
+	} else if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL && !enable) {
 		dev_dbg(di->dev, "Disable BATCTRL curr source\n");
 
 		/* Write 0 to the curr bits */
···
  * based on the NTC resistance.
  */
 static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di,
-	const struct abx500_res_to_temp *tbl, int tbl_size, int res)
+	const struct ab8500_res_to_temp *tbl, int tbl_size, int res)
 {
 	int i;
 	/*
···
 			i++;
 	}
 
-	return tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) *
-		(res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist);
+	return fixp_linear_interpolate(tbl[i].resist, tbl[i].temp,
+				       tbl[i + 1].resist, tbl[i + 1].temp,
+				       res);
 }
 
 /**
···
 
 	id = di->bm->batt_id;
 
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL &&
+	if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL &&
 			id != BATTERY_UNKNOWN) {
 
 		rbat = ab8500_btemp_get_batctrl_res(di);
···
 			dev_dbg(di->dev, "Battery detected on %s"
 				" low %d < res %d < high: %d"
 				" index: %d\n",
-				di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL ?
+				di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL ?
 				"BATCTRL" : "BATTEMP",
 				di->bm->bat_type[i].resis_low, res,
 				di->bm->bat_type[i].resis_high, i);
···
 	 * We only have to change current source if the
 	 * detected type is Type 1.
 	 */
-	if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL &&
+	if (di->bm->adc_therm == AB8500_ADC_THERM_BATCTRL &&
 	    di->bm->batt_id == 1) {
 		dev_dbg(di->dev, "Set BATCTRL current source to 20uA\n");
 		di->curr_source = BTEMP_BATCTRL_CURR_SRC_20UA;

drivers/power/supply/ab8500_charger.c

···
 	struct iio_channel *adc_main_charger_c;
 	struct iio_channel *adc_vbus_v;
 	struct iio_channel *adc_usb_charger_c;
-	struct abx500_bm_data *bm;
+	struct ab8500_bm_data *bm;
 	struct ab8500_charger_event_flags flags;
 	struct ab8500_charger_usb_state usb_state;
 	struct ab8500_charger_max_usb_in_curr max_usb_in_curr;
···
 static struct platform_driver *const ab8500_charger_component_drivers[] = {
 	&ab8500_fg_driver,
 	&ab8500_btemp_driver,
-	&abx500_chargalg_driver,
+	&ab8500_chargalg_driver,
 };
 
 static int ab8500_charger_compare_dev(struct device *dev, void *data)

drivers/power/supply/ab8500_fg.c

···
 #include <linux/mfd/abx500/ab8500.h>
 #include <linux/iio/consumer.h>
 #include <linux/kernel.h>
+#include <linux/fixp-arith.h>
 
 #include "ab8500-bm.h"
 
···
 
 /* FG constants */
 #define BATT_OVV			0x01
-
-#define interpolate(x, x1, y1, x2, y2) \
-	((y1) + ((((y2) - (y1)) * ((x) - (x1))) / ((x2) - (x1))));
 
 /**
  * struct ab8500_fg_interrupts - ab8500 fg interrupts
···
 	struct ab8500_fg_avg_cap avg_cap;
 	struct ab8500 *parent;
 	struct iio_channel *main_bat_v;
-	struct abx500_bm_data *bm;
+	struct ab8500_bm_data *bm;
 	struct power_supply *fg_psy;
 	struct workqueue_struct *fg_wq;
 	struct delayed_work fg_periodic_work;
···
 static int ab8500_fg_volt_to_capacity(struct ab8500_fg *di, int voltage)
 {
 	int i, tbl_size;
-	const struct abx500_v_to_cap *tbl;
+	const struct ab8500_v_to_cap *tbl;
 	int cap = 0;
 
 	tbl = di->bm->bat_type[di->bm->batt_id].v_to_cap_tbl;
···
 	}
 
 	if ((i > 0) && (i < tbl_size)) {
-		cap = interpolate(voltage,
+		cap = fixp_linear_interpolate(
 			tbl[i].voltage,
 			tbl[i].capacity * 10,
 			tbl[i-1].voltage,
-			tbl[i-1].capacity * 10);
+			tbl[i-1].capacity * 10,
+			voltage);
 	} else if (i == 0) {
 		cap = 1000;
 	} else {
···
 	}
 
 	if ((i > 0) && (i < tbl_size)) {
-		resist = interpolate(di->bat_temp / 10,
+		resist = fixp_linear_interpolate(
 			tbl[i].temp,
 			tbl[i].resist,
 			tbl[i-1].temp,
-			tbl[i-1].resist);
+			tbl[i-1].resist,
+			di->bat_temp / 10);
 	} else if (i == 0) {
 		resist = tbl[0].resist;
 	} else {
···
 			case POWER_SUPPLY_TYPE_BATTERY:
 				if (!di->flags.batt_id_received &&
 				    di->bm->batt_id != BATTERY_UNKNOWN) {
-					const struct abx500_battery_type *b;
+					const struct ab8500_battery_type *b;
 
 					b = &(di->bm->bat_type[di->bm->batt_id]);
 

drivers/power/supply/abx500_chargalg.c drivers/power/supply/ab8500_chargalg.c

···
  * Copyright (C) ST-Ericsson SA 2012
  * Copyright (c) 2012 Sony Mobile Communications AB
  *
- * Charging algorithm driver for abx500 variants
+ * Charging algorithm driver for AB8500
  *
  * Authors:
  *	Johan Palsson <[e-mail]>
···
 #define CHARGALG_CURR_STEP_LOW		0
 #define CHARGALG_CURR_STEP_HIGH	100
 
-enum abx500_chargers {
+enum ab8500_chargers {
 	NO_CHG,
 	AC_CHG,
 	USB_CHG,
 };
 
-struct abx500_chargalg_charger_info {
-	enum abx500_chargers conn_chg;
-	enum abx500_chargers prev_conn_chg;
-	enum abx500_chargers online_chg;
-	enum abx500_chargers prev_online_chg;
-	enum abx500_chargers charger_type;
+struct ab8500_chargalg_charger_info {
+	enum ab8500_chargers conn_chg;
+	enum ab8500_chargers prev_conn_chg;
+	enum ab8500_chargers online_chg;
+	enum ab8500_chargers prev_online_chg;
+	enum ab8500_chargers charger_type;
 	bool usb_chg_ok;
 	bool ac_chg_ok;
 	int usb_volt;
···
 	int ac_iset;
 };
 
-struct abx500_chargalg_suspension_status {
+struct ab8500_chargalg_suspension_status {
 	bool suspended_change;
 	bool ac_suspended;
 	bool usb_suspended;
 };
 
-struct abx500_chargalg_current_step_status {
+struct ab8500_chargalg_current_step_status {
 	bool curr_step_change;
 	int curr_step;
 };
 
-struct abx500_chargalg_battery_data {
+struct ab8500_chargalg_battery_data {
 	int temp;
 	int volt;
 	int avg_curr;
···
 	int percent;
 };
 
-enum abx500_chargalg_states {
+enum ab8500_chargalg_states {
 	STATE_HANDHELD_INIT,
 	STATE_HANDHELD,
 	STATE_CHG_NOT_OK_INIT,
···
 	STATE_WD_EXPIRED,
 };
 
-static const char *states[] = {
+static const char * const states[] = {
 	"HANDHELD_INIT",
 	"HANDHELD",
 	"CHG_NOT_OK_INIT",
···
 	"WD_EXPIRED",
 };
 
-struct abx500_chargalg_events {
+struct ab8500_chargalg_events {
 	bool batt_unknown;
 	bool mainextchnotok;
 	bool batt_ovv;
···
 };
 
 /**
- * struct abx500_charge_curr_maximization - Charger maximization parameters
+ * struct ab8500_charge_curr_maximization - Charger maximization parameters
  * @original_iset:	the non optimized/maximised charger current
  * @current_iset:	the charging current used at this moment
  * @test_delta_i:	the delta between the current we want to charge and the
···
  * @level:		tells in how many steps the charging current has been
 			increased
  */
-struct abx500_charge_curr_maximization {
+struct ab8500_charge_curr_maximization {
 	int original_iset;
 	int current_iset;
 	int test_delta_i;
···
 };
 
 /**
- * struct abx500_chargalg - abx500 Charging algorithm device information
+ * struct ab8500_chargalg - ab8500 Charging algorithm device information
  * @dev:		pointer to the structure device
  * @charge_status:	battery operating status
  * @eoc_cnt:		counter used to determine end-of_charge
···
  * @susp_status:	current charger suspension status
  * @bm:           	Platform specific battery management information
  * @curr_status:	Current step status for over-current protection
- * @parent:		pointer to the struct abx500
+ * @parent:		pointer to the struct ab8500
  * @chargalg_psy:	structure that holds the battery properties exposed by
  *			the charging algorithm
  * @events:		structure for information about events triggered
···
  * @maintenance_timer:		maintenance charging timer
  * @chargalg_kobject:		structure of type kobject
  */
-struct abx500_chargalg {
+struct ab8500_chargalg {
 	struct device *dev;
 	int charge_status;
 	int eoc_cnt;
 	bool maintenance_chg;
 	int t_hyst_norm;
 	int t_hyst_lowhigh;
-	enum abx500_chargalg_states charge_state;
-	struct abx500_charge_curr_maximization ccm;
-	struct abx500_chargalg_charger_info chg_info;
-	struct abx500_chargalg_battery_data batt_data;
-	struct abx500_chargalg_suspension_status susp_status;
+	enum ab8500_chargalg_states charge_state;
+	struct ab8500_charge_curr_maximization ccm;
+	struct ab8500_chargalg_charger_info chg_info;
+	struct ab8500_chargalg_battery_data batt_data;
+	struct ab8500_chargalg_suspension_status susp_status;
 	struct ab8500 *parent;
-	struct abx500_chargalg_current_step_status curr_status;
-	struct abx500_bm_data *bm;
+	struct ab8500_chargalg_current_step_status curr_status;
+	struct ab8500_bm_data *bm;
 	struct power_supply *chargalg_psy;
 	struct ux500_charger *ac_chg;
 	struct ux500_charger *usb_chg;
-	struct abx500_chargalg_events events;
+	struct ab8500_chargalg_events events;
 	struct workqueue_struct *chargalg_wq;
 	struct delayed_work chargalg_periodic_work;
 	struct delayed_work chargalg_wd_work;
···
 BLOCKING_NOTIFIER_HEAD(charger_notifier_list);
 
 /* Main battery properties */
-static enum power_supply_property abx500_chargalg_props[] = {
+static enum power_supply_property ab8500_chargalg_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_HEALTH,
 };
 
-struct abx500_chargalg_sysfs_entry {
+struct ab8500_chargalg_sysfs_entry {
 	struct attribute attr;
-	ssize_t (*show)(struct abx500_chargalg *, char *);
-	ssize_t (*store)(struct abx500_chargalg *, const char *, size_t);
+	ssize_t (*show)(struct ab8500_chargalg *di, char *buf);
+	ssize_t (*store)(struct ab8500_chargalg *di, const char *buf, size_t length);
 };
 
 /**
- * abx500_chargalg_safety_timer_expired() - Expiration of the safety timer
+ * ab8500_chargalg_safety_timer_expired() - Expiration of the safety timer
  * @timer:     pointer to the hrtimer structure
  *
  * This function gets called when the safety timer for the charger
  * expires
  */
 static enum hrtimer_restart
-abx500_chargalg_safety_timer_expired(struct hrtimer *timer)
+ab8500_chargalg_safety_timer_expired(struct hrtimer *timer)
 {
-	struct abx500_chargalg *di = container_of(timer, struct abx500_chargalg,
+	struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg,
 						  safety_timer);
 	dev_err(di->dev, "Safety timer expired\n");
 	di->events.safety_timer_expired = true;
···
 }
 
 /**
- * abx500_chargalg_maintenance_timer_expired() - Expiration of
+ * ab8500_chargalg_maintenance_timer_expired() - Expiration of
  * the maintenance timer
  * @timer:     pointer to the timer structure
  *
···
  * expires
  */
 static enum hrtimer_restart
-abx500_chargalg_maintenance_timer_expired(struct hrtimer *timer)
+ab8500_chargalg_maintenance_timer_expired(struct hrtimer *timer)
 {
 
-	struct abx500_chargalg *di = container_of(timer, struct abx500_chargalg,
+	struct ab8500_chargalg *di = container_of(timer, struct ab8500_chargalg,
 						  maintenance_timer);
 
 	dev_dbg(di->dev, "Maintenance timer expired\n");
···
 }
 
 /**
- * abx500_chargalg_state_to() - Change charge state
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_state_to() - Change charge state
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This function gets called when a charge state change should occur
  */
-static void abx500_chargalg_state_to(struct abx500_chargalg *di,
-	enum abx500_chargalg_states state)
+static void ab8500_chargalg_state_to(struct ab8500_chargalg *di,
+	enum ab8500_chargalg_states state)
 {
 	dev_dbg(di->dev,
 		"State changed: %s (From state: [%d] %s =to=> [%d] %s )\n",
···
 	di->charge_state = state;
 }
 
-static int abx500_chargalg_check_charger_enable(struct abx500_chargalg *di)
+static int ab8500_chargalg_check_charger_enable(struct ab8500_chargalg *di)
 {
 	switch (di->charge_state) {
 	case STATE_NORMAL:
···
 }
 
 /**
- * abx500_chargalg_check_charger_connection() - Check charger connection change
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_check_charger_connection() - Check charger connection change
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This function will check if there is a change in the charger connection
  * and change charge state accordingly. AC has precedence over USB.
  */
-static int abx500_chargalg_check_charger_connection(struct abx500_chargalg *di)
+static int ab8500_chargalg_check_charger_connection(struct ab8500_chargalg *di)
 {
 	if (di->chg_info.conn_chg != di->chg_info.prev_conn_chg ||
 		di->susp_status.suspended_change) {
···
 			dev_dbg(di->dev, "Charging source is AC\n");
 			if (di->chg_info.charger_type != AC_CHG) {
 				di->chg_info.charger_type = AC_CHG;
-				abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+				ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 			}
 		} else if ((di->chg_info.conn_chg & USB_CHG) &&
 			!di->susp_status.usb_suspended) {
 			dev_dbg(di->dev, "Charging source is USB\n");
 			di->chg_info.charger_type = USB_CHG;
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		} else if (di->chg_info.conn_chg &&
 			(di->susp_status.ac_suspended ||
 			di->susp_status.usb_suspended)) {
 			dev_dbg(di->dev, "Charging is suspended\n");
 			di->chg_info.charger_type = NO_CHG;
-			abx500_chargalg_state_to(di, STATE_SUSPENDED_INIT);
+			ab8500_chargalg_state_to(di, STATE_SUSPENDED_INIT);
 		} else {
 			dev_dbg(di->dev, "Charging source is OFF\n");
 			di->chg_info.charger_type = NO_CHG;
-			abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
+			ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT);
 		}
 		di->chg_info.prev_conn_chg = di->chg_info.conn_chg;
 		di->susp_status.suspended_change = false;
···
 }
 
 /**
- * abx500_chargalg_check_current_step_status() - Check charging current
+ * ab8500_chargalg_check_current_step_status() - Check charging current
  * step status.
- * @di:		pointer to the abx500_chargalg structure
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This function will check if there is a change in the charging current step
  * and change charge state accordingly.
  */
-static void abx500_chargalg_check_current_step_status
-	(struct abx500_chargalg *di)
+static void ab8500_chargalg_check_current_step_status
+	(struct ab8500_chargalg *di)
 {
 	if (di->curr_status.curr_step_change)
-		abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+		ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 	di->curr_status.curr_step_change = false;
 }
 
 /**
- * abx500_chargalg_start_safety_timer() - Start charging safety timer
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_start_safety_timer() - Start charging safety timer
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * The safety timer is used to avoid overcharging of old or bad batteries.
  * There are different timers for AC and USB
  */
-static void abx500_chargalg_start_safety_timer(struct abx500_chargalg *di)
+static void ab8500_chargalg_start_safety_timer(struct ab8500_chargalg *di)
 {
 	/* Charger-dependent expiration time in hours*/
 	int timer_expiration = 0;
···
 }
 
 /**
- * abx500_chargalg_stop_safety_timer() - Stop charging safety timer
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_stop_safety_timer() - Stop charging safety timer
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * The safety timer is stopped whenever the NORMAL state is exited
  */
-static void abx500_chargalg_stop_safety_timer(struct abx500_chargalg *di)
+static void ab8500_chargalg_stop_safety_timer(struct ab8500_chargalg *di)
 {
 	if (hrtimer_try_to_cancel(&di->safety_timer) >= 0)
 		di->events.safety_timer_expired = false;
 }
 
 /**
- * abx500_chargalg_start_maintenance_timer() - Start charging maintenance timer
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_start_maintenance_timer() - Start charging maintenance timer
+ * @di:		pointer to the ab8500_chargalg structure
  * @duration:	duration of ther maintenance timer in hours
  *
  * The maintenance timer is used to maintain the charge in the battery once
  * the battery is considered full. These timers are chosen to match the
  * discharge curve of the battery
  */
-static void abx500_chargalg_start_maintenance_timer(struct abx500_chargalg *di,
+static void ab8500_chargalg_start_maintenance_timer(struct ab8500_chargalg *di,
 	int duration)
 {
 	hrtimer_set_expires_range(&di->maintenance_timer,
···
 }
 
 /**
- * abx500_chargalg_stop_maintenance_timer() - Stop maintenance timer
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_stop_maintenance_timer() - Stop maintenance timer
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * The maintenance timer is stopped whenever maintenance ends or when another
  * state is entered
  */
-static void abx500_chargalg_stop_maintenance_timer(struct abx500_chargalg *di)
+static void ab8500_chargalg_stop_maintenance_timer(struct ab8500_chargalg *di)
 {
 	if (hrtimer_try_to_cancel(&di->maintenance_timer) >= 0)
 		di->events.maintenance_timer_expired = false;
 }
 
 /**
- * abx500_chargalg_kick_watchdog() - Kick charger watchdog
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_kick_watchdog() - Kick charger watchdog
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * The charger watchdog have to be kicked periodically whenever the charger is
  * on, else the ABB will reset the system
  */
-static int abx500_chargalg_kick_watchdog(struct abx500_chargalg *di)
+static int ab8500_chargalg_kick_watchdog(struct ab8500_chargalg *di)
 {
 	/* Check if charger exists and kick watchdog if charging */
 	if (di->ac_chg && di->ac_chg->ops.kick_wd &&
···
 			di->usb_chg->ops.kick_wd(di->usb_chg);
 
 		return di->ac_chg->ops.kick_wd(di->ac_chg);
-	}
-	else if (di->usb_chg && di->usb_chg->ops.kick_wd &&
+	} else if (di->usb_chg && di->usb_chg->ops.kick_wd &&
 			di->chg_info.online_chg & USB_CHG)
 		return di->usb_chg->ops.kick_wd(di->usb_chg);
 
···
 }
 
 /**
- * abx500_chargalg_ac_en() - Turn on/off the AC charger
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_ac_en() - Turn on/off the AC charger
+ * @di:		pointer to the ab8500_chargalg structure
  * @enable:	charger on/off
  * @vset:	requested charger output voltage
  * @iset:	requested charger output current
···
  * The AC charger will be turned on/off with the requested charge voltage and
  * current
  */
-static int abx500_chargalg_ac_en(struct abx500_chargalg *di, int enable,
+static int ab8500_chargalg_ac_en(struct ab8500_chargalg *di, int enable,
 	int vset, int iset)
 {
-	static int abx500_chargalg_ex_ac_enable_toggle;
+	static int ab8500_chargalg_ex_ac_enable_toggle;
 
 	if (!di->ac_chg || !di->ac_chg->ops.enable)
 		return -ENXIO;
···
 
 	/* Enable external charger */
 	if (enable && di->ac_chg->external &&
-	    !abx500_chargalg_ex_ac_enable_toggle) {
+	    !ab8500_chargalg_ex_ac_enable_toggle) {
 		blocking_notifier_call_chain(&charger_notifier_list,
 					     0, di->dev);
-		abx500_chargalg_ex_ac_enable_toggle++;
+		ab8500_chargalg_ex_ac_enable_toggle++;
 	}
 
 	return di->ac_chg->ops.enable(di->ac_chg, enable, vset, iset);
 }
 
 /**
- * abx500_chargalg_usb_en() - Turn on/off the USB charger
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_usb_en() - Turn on/off the USB charger
+ * @di:		pointer to the ab8500_chargalg structure
  * @enable:	charger on/off
  * @vset:	requested charger output voltage
  * @iset:	requested charger output current
···
  * The USB charger will be turned on/off with the requested charge voltage and
  * current
  */
-static int abx500_chargalg_usb_en(struct abx500_chargalg *di, int enable,
+static int ab8500_chargalg_usb_en(struct ab8500_chargalg *di, int enable,
 	int vset, int iset)
 {
 	if (!di->usb_chg || !di->usb_chg->ops.enable)
···
 }
 
 /**
- * abx500_chargalg_update_chg_curr() - Update charger current
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_update_chg_curr() - Update charger current
+ * @di:		pointer to the ab8500_chargalg structure
  * @iset:	requested charger output current
  *
  * The charger output current will be updated for the charger
  * that is currently in use
  */
-static int abx500_chargalg_update_chg_curr(struct abx500_chargalg *di,
+static int ab8500_chargalg_update_chg_curr(struct ab8500_chargalg *di,
 		int iset)
 {
 	/* Check if charger exists and update current if charging */
···
 }
 
 /**
- * abx500_chargalg_stop_charging() - Stop charging
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_stop_charging() - Stop charging
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This function is called from any state where charging should be stopped.
  * All charging is disabled and all status parameters and timers are changed
  * accordingly
  */
-static void abx500_chargalg_stop_charging(struct abx500_chargalg *di)
+static void ab8500_chargalg_stop_charging(struct ab8500_chargalg *di)
 {
-	abx500_chargalg_ac_en(di, false, 0, 0);
-	abx500_chargalg_usb_en(di, false, 0, 0);
-	abx500_chargalg_stop_safety_timer(di);
-	abx500_chargalg_stop_maintenance_timer(di);
+	ab8500_chargalg_ac_en(di, false, 0, 0);
+	ab8500_chargalg_usb_en(di, false, 0, 0);
+	ab8500_chargalg_stop_safety_timer(di);
+	ab8500_chargalg_stop_maintenance_timer(di);
 	di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
 	di->maintenance_chg = false;
 	cancel_delayed_work(&di->chargalg_wd_work);
···
 }
 
 /**
- * abx500_chargalg_hold_charging() - Pauses charging
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_hold_charging() - Pauses charging
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This function is called in the case where maintenance charging has been
  * disabled and instead a battery voltage mode is entered to check when the
  * battery voltage has reached a certain recharge voltage
  */
-static void abx500_chargalg_hold_charging(struct abx500_chargalg *di)
+static void ab8500_chargalg_hold_charging(struct ab8500_chargalg *di)
 {
-	abx500_chargalg_ac_en(di, false, 0, 0);
-	abx500_chargalg_usb_en(di, false, 0, 0);
-	abx500_chargalg_stop_safety_timer(di);
-	abx500_chargalg_stop_maintenance_timer(di);
+	ab8500_chargalg_ac_en(di, false, 0, 0);
+	ab8500_chargalg_usb_en(di, false, 0, 0);
+	ab8500_chargalg_stop_safety_timer(di);
+	ab8500_chargalg_stop_maintenance_timer(di);
 	di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
 	di->maintenance_chg = false;
 	cancel_delayed_work(&di->chargalg_wd_work);
···
 }
 
 /**
- * abx500_chargalg_start_charging() - Start the charger
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_start_charging() - Start the charger
+ * @di:		pointer to the ab8500_chargalg structure
  * @vset:	requested charger output voltage
  * @iset:	requested charger output current
  *
  * A charger will be enabled depending on the requested charger type that was
  * detected previously.
  */
-static void abx500_chargalg_start_charging(struct abx500_chargalg *di,
+static void ab8500_chargalg_start_charging(struct ab8500_chargalg *di,
 	int vset, int iset)
 {
 	switch (di->chg_info.charger_type) {
 	case AC_CHG:
 		dev_dbg(di->dev,
 			"AC parameters: Vset %d, Ich %d\n", vset, iset);
-		abx500_chargalg_usb_en(di, false, 0, 0);
-		abx500_chargalg_ac_en(di, true, vset, iset);
+		ab8500_chargalg_usb_en(di, false, 0, 0);
+		ab8500_chargalg_ac_en(di, true, vset, iset);
 		break;
 
 	case USB_CHG:
 		dev_dbg(di->dev,
 			"USB parameters: Vset %d, Ich %d\n", vset, iset);
-		abx500_chargalg_ac_en(di, false, 0, 0);
-		abx500_chargalg_usb_en(di, true, vset, iset);
+		ab8500_chargalg_ac_en(di, false, 0, 0);
+		ab8500_chargalg_usb_en(di, true, vset, iset);
 		break;
 
 	default:
···
 }
 
 /**
- * abx500_chargalg_check_temp() - Check battery temperature ranges
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_check_temp() - Check battery temperature ranges
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * The battery temperature is checked against the predefined limits and the
  * charge state is changed accordingly
  */
-static void abx500_chargalg_check_temp(struct abx500_chargalg *di)
+static void ab8500_chargalg_check_temp(struct ab8500_chargalg *di)
 {
 	if (di->batt_data.temp > (di->bm->temp_low + di->t_hyst_norm) &&
 		di->batt_data.temp < (di->bm->temp_high - di->t_hyst_norm)) {
···
 			di->t_hyst_norm = 0;
 			di->t_hyst_lowhigh = di->bm->temp_hysteresis;
 		} else {
-		/* Within hysteresis */
-		dev_dbg(di->dev, "Within hysteresis limit temp: %d "
+			/* Within hysteresis */
+			dev_dbg(di->dev, "Within hysteresis limit temp: %d "
 				"hyst_lowhigh %d, hyst normal %d\n",
 				di->batt_data.temp, di->t_hyst_lowhigh,
 				di->t_hyst_norm);
···
 }
 
 /**
- * abx500_chargalg_check_charger_voltage() - Check charger voltage
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_check_charger_voltage() - Check charger voltage
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * Charger voltage is checked against maximum limit
  */
-static void abx500_chargalg_check_charger_voltage(struct abx500_chargalg *di)
+static void ab8500_chargalg_check_charger_voltage(struct ab8500_chargalg *di)
 {
 	if (di->chg_info.usb_volt > di->bm->chg_params->usb_volt_max)
 		di->chg_info.usb_chg_ok = false;
···
 }
 
 /**
- * abx500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_end_of_charge() - Check if end-of-charge criteria is fulfilled
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * End-of-charge criteria is fulfilled when the battery voltage is above a
  * certain limit and the battery current is below a certain limit for a
  * predefined number of consecutive seconds. If true, the battery is full
  */
-static void abx500_chargalg_end_of_charge(struct abx500_chargalg *di)
+static void ab8500_chargalg_end_of_charge(struct ab8500_chargalg *di)
 {
 	if (di->charge_status == POWER_SUPPLY_STATUS_CHARGING &&
 		di->charge_state == STATE_NORMAL &&
···
 	}
 }
 
-static void init_maxim_chg_curr(struct abx500_chargalg *di)
+static void init_maxim_chg_curr(struct ab8500_chargalg *di)
 {
 	di->ccm.original_iset =
 		di->bm->bat_type[di->bm->batt_id].normal_cur_lvl;
···
 }
 
 /**
- * abx500_chargalg_chg_curr_maxim - increases the charger current to
+ * ab8500_chargalg_chg_curr_maxim - increases the charger current to
  *			compensate for the system load
- * @di		pointer to the abx500_chargalg structure
+ * @di		pointer to the ab8500_chargalg structure
  *
  * This maximization function is used to raise the charger current to get the
  * battery current as close to the optimal value as possible. The battery
  * current during charging is affected by the system load
  */
-static enum maxim_ret abx500_chargalg_chg_curr_maxim(struct abx500_chargalg *di)
+static enum maxim_ret ab8500_chargalg_chg_curr_maxim(struct ab8500_chargalg *di)
 {
 	int delta_i;
 
···
 
 	di->ccm.wait_cnt = 0;
 
-	if ((di->batt_data.inst_curr > di->ccm.original_iset)) {
+	if (di->batt_data.inst_curr > di->ccm.original_iset) {
 		dev_dbg(di->dev, " Maximization Ibat (%dmA) too high"
 			" (limit %dmA) (current iset: %dmA)!\n",
 			di->batt_data.inst_curr, di->ccm.original_iset,
···
 	}
 }
 
-static void handle_maxim_chg_curr(struct abx500_chargalg *di)
+static void handle_maxim_chg_curr(struct ab8500_chargalg *di)
 {
 	enum maxim_ret ret;
 	int result;
 
-	ret = abx500_chargalg_chg_curr_maxim(di);
+	ret = ab8500_chargalg_chg_curr_maxim(di);
 	switch (ret) {
 	case MAXIM_RET_CHANGE:
-		result = abx500_chargalg_update_chg_curr(di,
+		result = ab8500_chargalg_update_chg_curr(di,
 			di->ccm.current_iset);
 		if (result)
 			dev_err(di->dev, "failed to set chg curr\n");
 		break;
 	case MAXIM_RET_IBAT_TOO_HIGH:
-		result = abx500_chargalg_update_chg_curr(di,
+		result = ab8500_chargalg_update_chg_curr(di,
 			di->bm->bat_type[di->bm->batt_id].normal_cur_lvl);
 		if (result)
 			dev_err(di->dev, "failed to set chg curr\n");
···
 	}
 }
 
-static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
+static int ab8500_chargalg_get_ext_psy_data(struct device *dev, void *data)
 {
 	struct power_supply *psy;
 	struct power_supply *ext = dev_get_drvdata(dev);
 	const char **supplicants = (const char **)ext->supplied_to;
-	struct abx500_chargalg *di;
+	struct ab8500_chargalg *di;
 	union power_supply_propval ret;
 	int j;
 	bool capacity_updated = false;
···
 }
 
 /**
- * abx500_chargalg_external_power_changed() - callback for power supply changes
+ * ab8500_chargalg_external_power_changed() - callback for power supply changes
  * @psy:       pointer to the structure power_supply
  *
  * This function is the entry point of the pointer external_power_changed
···
  * This function gets executed when there is a change in any external power
  * supply that this driver needs to be notified of.
  */
-static void abx500_chargalg_external_power_changed(struct power_supply *psy)
+static void ab8500_chargalg_external_power_changed(struct power_supply *psy)
 {
-	struct abx500_chargalg *di = power_supply_get_drvdata(psy);
+	struct ab8500_chargalg *di = power_supply_get_drvdata(psy);
 
 	/*
 	 * Trigger execution of the algorithm instantly and read
 	 * all power_supply properties there instead
 	 */
-	queue_work(di->chargalg_wq, &di->chargalg_work);
+	if (di->chargalg_wq)
+		queue_work(di->chargalg_wq, &di->chargalg_work);
 }
 
 /**
- * abx500_chargalg_algorithm() - Main function for the algorithm
- * @di:		pointer to the abx500_chargalg structure
+ * ab8500_chargalg_algorithm() - Main function for the algorithm
+ * @di:		pointer to the ab8500_chargalg structure
  *
  * This is the main control function for the charging algorithm.
  * It is called periodically or when something happens that will
  * trigger a state change
  */
-static void abx500_chargalg_algorithm(struct abx500_chargalg *di)
+static void ab8500_chargalg_algorithm(struct ab8500_chargalg *di)
 {
 	int charger_status;
 	int ret;
···
 
 	/* Collect data from all power_supply class devices */
 	class_for_each_device(power_supply_class, NULL,
-		di->chargalg_psy, abx500_chargalg_get_ext_psy_data);
+		di->chargalg_psy, ab8500_chargalg_get_ext_psy_data);
 
-	abx500_chargalg_end_of_charge(di);
-	abx500_chargalg_check_temp(di);
-	abx500_chargalg_check_charger_voltage(di);
+	ab8500_chargalg_end_of_charge(di);
+	ab8500_chargalg_check_temp(di);
+	ab8500_chargalg_check_charger_voltage(di);
 
-	charger_status = abx500_chargalg_check_charger_connection(di);
-	abx500_chargalg_check_current_step_status(di);
+	charger_status = ab8500_chargalg_check_charger_connection(di);
+	ab8500_chargalg_check_current_step_status(di);
 
 	if (is_ab8500(di->parent)) {
-		ret = abx500_chargalg_check_charger_enable(di);
+		ret = ab8500_chargalg_check_charger_enable(di);
 		if (ret < 0)
 			dev_err(di->dev, "Checking charger is enabled error"
 					": Returned Value %d\n", ret);
···
 		(di->events.batt_unknown && !di->bm->chg_unknown_bat)) {
 		if (di->charge_state != STATE_HANDHELD) {
 			di->events.safety_timer_expired = false;
-			abx500_chargalg_state_to(di, STATE_HANDHELD_INIT);
+			ab8500_chargalg_state_to(di, STATE_HANDHELD_INIT);
 		}
 	}
 
···
 	/* Safety timer expiration */
 	else if (di->events.safety_timer_expired) {
 		if (di->charge_state != STATE_SAFETY_TIMER_EXPIRED)
-			abx500_chargalg_state_to(di,
+			ab8500_chargalg_state_to(di,
 				STATE_SAFETY_TIMER_EXPIRED_INIT);
 	}
 	/*
···
 	/* Battery removed */
 	else if (di->events.batt_rem) {
 		if (di->charge_state != STATE_BATT_REMOVED)
-			abx500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT);
+			ab8500_chargalg_state_to(di, STATE_BATT_REMOVED_INIT);
 	}
 	/* Main or USB charger not ok. */
 	else if (di->events.mainextchnotok || di->events.usbchargernotok) {
···
 		 */
 		if (di->charge_state != STATE_CHG_NOT_OK &&
 				!di->events.vbus_collapsed)
-			abx500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT);
+			ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK_INIT);
 	}
 	/* VBUS, Main or VBAT OVV. */
 	else if (di->events.vbus_ovv ||
···
 			!di->chg_info.usb_chg_ok ||
 			!di->chg_info.ac_chg_ok) {
 		if (di->charge_state != STATE_OVV_PROTECT)
-			abx500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT);
+			ab8500_chargalg_state_to(di, STATE_OVV_PROTECT_INIT);
 	}
 	/* USB Thermal, stop charging */
 	else if (di->events.main_thermal_prot ||
 		di->events.usb_thermal_prot) {
 		if (di->charge_state != STATE_HW_TEMP_PROTECT)
-			abx500_chargalg_state_to(di,
+			ab8500_chargalg_state_to(di,
 				STATE_HW_TEMP_PROTECT_INIT);
 	}
 	/* Battery temp over/under */
 	else if (di->events.btemp_underover) {
 		if (di->charge_state != STATE_TEMP_UNDEROVER)
-			abx500_chargalg_state_to(di,
+			ab8500_chargalg_state_to(di,
 				STATE_TEMP_UNDEROVER_INIT);
 	}
 	/* Watchdog expired */
 	else if (di->events.ac_wd_expired ||
 		di->events.usb_wd_expired) {
 		if (di->charge_state != STATE_WD_EXPIRED)
-			abx500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT);
+			ab8500_chargalg_state_to(di, STATE_WD_EXPIRED_INIT);
 	}
 	/* Battery temp high/low */
 	else if (di->events.btemp_lowhigh) {
 		if (di->charge_state != STATE_TEMP_LOWHIGH)
-			abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT);
+			ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH_INIT);
 	}
 
 	dev_dbg(di->dev,
···
 
 	switch (di->charge_state) {
 	case STATE_HANDHELD_INIT:
-		abx500_chargalg_stop_charging(di);
+		ab8500_chargalg_stop_charging(di);
 		di->charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
-		abx500_chargalg_state_to(di, STATE_HANDHELD);
+		ab8500_chargalg_state_to(di, STATE_HANDHELD);
 		fallthrough;
 
 	case STATE_HANDHELD:
···
 
 	case STATE_SUSPENDED_INIT:
 		if (di->susp_status.ac_suspended)
-			abx500_chargalg_ac_en(di, false, 0, 0);
+			ab8500_chargalg_ac_en(di, false, 0, 0);
 		if (di->susp_status.usb_suspended)
-			abx500_chargalg_usb_en(di, false, 0, 0);
-		abx500_chargalg_stop_safety_timer(di);
-		abx500_chargalg_stop_maintenance_timer(di);
+			ab8500_chargalg_usb_en(di, false, 0, 0);
+		ab8500_chargalg_stop_safety_timer(di);
+		ab8500_chargalg_stop_maintenance_timer(di);
 		di->charge_status = POWER_SUPPLY_STATUS_NOT_CHARGING;
 		di->maintenance_chg = false;
-		abx500_chargalg_state_to(di, STATE_SUSPENDED);
+		ab8500_chargalg_state_to(di, STATE_SUSPENDED);
 		power_supply_changed(di->chargalg_psy);
 		fallthrough;
 
···
 		break;
 
 	case STATE_BATT_REMOVED_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_BATT_REMOVED);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_BATT_REMOVED);
 		fallthrough;
 
 	case STATE_BATT_REMOVED:
 		if (!di->events.batt_rem)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_HW_TEMP_PROTECT_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_HW_TEMP_PROTECT);
 		fallthrough;
 
 	case STATE_HW_TEMP_PROTECT:
 		if (!di->events.main_thermal_prot &&
 				!di->events.usb_thermal_prot)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_OVV_PROTECT_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_OVV_PROTECT);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_OVV_PROTECT);
 		fallthrough;
 
 	case STATE_OVV_PROTECT:
···
 				!di->events.batt_ovv &&
 				di->chg_info.usb_chg_ok &&
 				di->chg_info.ac_chg_ok)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_CHG_NOT_OK_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_CHG_NOT_OK);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_CHG_NOT_OK);
 		fallthrough;
 
 	case STATE_CHG_NOT_OK:
 		if (!di->events.mainextchnotok &&
 				!di->events.usbchargernotok)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_SAFETY_TIMER_EXPIRED_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_SAFETY_TIMER_EXPIRED);
 		fallthrough;
 
 	case STATE_SAFETY_TIMER_EXPIRED:
···
 
 	case STATE_NORMAL_INIT:
 		if (di->curr_status.curr_step == CHARGALG_CURR_STEP_LOW)
-			abx500_chargalg_stop_charging(di);
+			ab8500_chargalg_stop_charging(di);
 		else {
 			curr_step_lvl = di->bm->bat_type[
 				di->bm->batt_id].normal_cur_lvl
 				* di->curr_status.curr_step
 				/ CHARGALG_CURR_STEP_HIGH;
-			abx500_chargalg_start_charging(di,
+			ab8500_chargalg_start_charging(di,
 				di->bm->bat_type[di->bm->batt_id]
 				.normal_vol_lvl, curr_step_lvl);
 		}
 
-		abx500_chargalg_state_to(di, STATE_NORMAL);
-		abx500_chargalg_start_safety_timer(di);
-		abx500_chargalg_stop_maintenance_timer(di);
+		ab8500_chargalg_state_to(di, STATE_NORMAL);
+		ab8500_chargalg_start_safety_timer(di);
+		ab8500_chargalg_stop_maintenance_timer(di);
 		init_maxim_chg_curr(di);
 		di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
 		di->eoc_cnt = 0;
···
 		if (di->charge_status == POWER_SUPPLY_STATUS_FULL &&
 			di->maintenance_chg) {
 			if (di->bm->no_maintenance)
-				abx500_chargalg_state_to(di,
+				ab8500_chargalg_state_to(di,
 					STATE_WAIT_FOR_RECHARGE_INIT);
 			else
-				abx500_chargalg_state_to(di,
+				ab8500_chargalg_state_to(di,
 					STATE_MAINTENANCE_A_INIT);
 		}
 		break;
 
 	/* This state will be used when the maintenance state is disabled */
 	case STATE_WAIT_FOR_RECHARGE_INIT:
-		abx500_chargalg_hold_charging(di);
-		abx500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE);
+		ab8500_chargalg_hold_charging(di);
+		ab8500_chargalg_state_to(di, STATE_WAIT_FOR_RECHARGE);
 		fallthrough;
 
 	case STATE_WAIT_FOR_RECHARGE:
 		if (di->batt_data.percent <=
-		    di->bm->bat_type[di->bm->batt_id].
-		    recharge_cap)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+		    di->bm->bat_type[di->bm->batt_id].recharge_cap)
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_MAINTENANCE_A_INIT:
-		abx500_chargalg_stop_safety_timer(di);
-		abx500_chargalg_start_maintenance_timer(di,
+		ab8500_chargalg_stop_safety_timer(di);
+		ab8500_chargalg_start_maintenance_timer(di,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_a_chg_timer_h);
-		abx500_chargalg_start_charging(di,
+		ab8500_chargalg_start_charging(di,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_a_vol_lvl,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_a_cur_lvl);
-		abx500_chargalg_state_to(di, STATE_MAINTENANCE_A);
+		ab8500_chargalg_state_to(di, STATE_MAINTENANCE_A);
 		power_supply_changed(di->chargalg_psy);
 		fallthrough;
 
 	case STATE_MAINTENANCE_A:
 		if (di->events.maintenance_timer_expired) {
-			abx500_chargalg_stop_maintenance_timer(di);
-			abx500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT);
+			ab8500_chargalg_stop_maintenance_timer(di);
+			ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B_INIT);
 		}
 		break;
 
 	case STATE_MAINTENANCE_B_INIT:
-		abx500_chargalg_start_maintenance_timer(di,
+		ab8500_chargalg_start_maintenance_timer(di,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_b_chg_timer_h);
-		abx500_chargalg_start_charging(di,
+		ab8500_chargalg_start_charging(di,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_b_vol_lvl,
 			di->bm->bat_type[
 				di->bm->batt_id].maint_b_cur_lvl);
-		abx500_chargalg_state_to(di, STATE_MAINTENANCE_B);
+		ab8500_chargalg_state_to(di, STATE_MAINTENANCE_B);
 		power_supply_changed(di->chargalg_psy);
 		fallthrough;
 
 	case STATE_MAINTENANCE_B:
 		if (di->events.maintenance_timer_expired) {
-			abx500_chargalg_stop_maintenance_timer(di);
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_stop_maintenance_timer(di);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		}
 		break;
 
 	case STATE_TEMP_LOWHIGH_INIT:
-		abx500_chargalg_start_charging(di,
+		ab8500_chargalg_start_charging(di,
 			di->bm->bat_type[
 				di->bm->batt_id].low_high_vol_lvl,
 			di->bm->bat_type[
 				di->bm->batt_id].low_high_cur_lvl);
-		abx500_chargalg_stop_maintenance_timer(di);
+		ab8500_chargalg_stop_maintenance_timer(di);
 		di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
-		abx500_chargalg_state_to(di, STATE_TEMP_LOWHIGH);
+		ab8500_chargalg_state_to(di, STATE_TEMP_LOWHIGH);
 		power_supply_changed(di->chargalg_psy);
 		fallthrough;
 
 	case STATE_TEMP_LOWHIGH:
 		if (!di->events.btemp_lowhigh)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_WD_EXPIRED_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_WD_EXPIRED);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_WD_EXPIRED);
 		fallthrough;
 
 	case STATE_WD_EXPIRED:
 		if (!di->events.ac_wd_expired &&
 				!di->events.usb_wd_expired)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 
 	case STATE_TEMP_UNDEROVER_INIT:
-		abx500_chargalg_stop_charging(di);
-		abx500_chargalg_state_to(di, STATE_TEMP_UNDEROVER);
+		ab8500_chargalg_stop_charging(di);
+		ab8500_chargalg_state_to(di, STATE_TEMP_UNDEROVER);
 		fallthrough;
 
 	case STATE_TEMP_UNDEROVER:
 		if (!di->events.btemp_underover)
-			abx500_chargalg_state_to(di, STATE_NORMAL_INIT);
+			ab8500_chargalg_state_to(di, STATE_NORMAL_INIT);
 		break;
 	}
 
···
 }
 
 /**
- * abx500_chargalg_periodic_work() - Periodic work for the algorithm
+ * ab8500_chargalg_periodic_work() - Periodic work for the algorithm
  * @work:	pointer to the work_struct structure
  *
  * Work queue function for the charging algorithm
  */
-static void abx500_chargalg_periodic_work(struct work_struct *work)
+static void ab8500_chargalg_periodic_work(struct work_struct *work)
 {
-	struct abx500_chargalg *di = container_of(work,
-		struct abx500_chargalg, chargalg_periodic_work.work);
+	struct ab8500_chargalg *di = container_of(work,
+		struct ab8500_chargalg, chargalg_periodic_work.work);
 
-	abx500_chargalg_algorithm(di);
+	ab8500_chargalg_algorithm(di);
 
 	/*
 	 * If a charger is connected then the battery has to be monitored
···
 }
 
 /**
- * abx500_chargalg_wd_work() - periodic work to kick the charger watchdog
+ * ab8500_chargalg_wd_work() - periodic work to kick the charger watchdog
  * @work:	pointer to the work_struct structure
  *
  * Work queue function for kicking the charger watchdog
  */
-static void abx500_chargalg_wd_work(struct work_struct *work)
+static void ab8500_chargalg_wd_work(struct work_struct *work)
 {
 	int ret;
-	struct abx500_chargalg *di = container_of(work,
-		struct abx500_chargalg, chargalg_wd_work.work);
+	struct ab8500_chargalg *di = container_of(work,
+		struct ab8500_chargalg, chargalg_wd_work.work);
 
-	dev_dbg(di->dev, "abx500_chargalg_wd_work\n");
-
-	ret = abx500_chargalg_kick_watchdog(di);
+	ret = ab8500_chargalg_kick_watchdog(di);
 	if (ret < 0)
 		dev_err(di->dev, "failed to kick watchdog\n");
 
···
 }
 
 /**
- * abx500_chargalg_work() - Work to run the charging algorithm instantly
+ * ab8500_chargalg_work() - Work to run the charging algorithm instantly
  * @work:	pointer to the work_struct structure
  *
  * Work queue function for calling the charging algorithm
  */
-static void abx500_chargalg_work(struct work_struct *work)
+static void ab8500_chargalg_work(struct work_struct *work)
 {
-	struct abx500_chargalg *di = container_of(work,
-		struct abx500_chargalg, chargalg_work);
+	struct ab8500_chargalg *di = container_of(work,
+		struct ab8500_chargalg, chargalg_work);
 
-	abx500_chargalg_algorithm(di);
+	ab8500_chargalg_algorithm(di);
 }
 
 /**
- * abx500_chargalg_get_property() - get the chargalg properties
+ * ab8500_chargalg_get_property() - get the chargalg properties
  * @psy:	pointer to the power_supply structure
  * @psp:	pointer to the power_supply_property structure
  * @val:	pointer to the power_supply_propval union
···
  * health:     health of the battery
  * Returns error code in case of failure else 0 on success
  */
-static int abx500_chargalg_get_property(struct power_supply *psy,
+static int ab8500_chargalg_get_property(struct power_supply *psy,
 	enum power_supply_property psp,
 	union power_supply_propval *val)
 {
-	struct abx500_chargalg *di = power_supply_get_drvdata(psy);
+	struct ab8500_chargalg *di = power_supply_get_drvdata(psy);
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_STATUS:
···
 
 /* Exposure to the sysfs interface */
 
-static ssize_t abx500_chargalg_curr_step_show(struct abx500_chargalg *di,
+static ssize_t ab8500_chargalg_curr_step_show(struct ab8500_chargalg *di,
 					      char *buf)
 {
 	return sprintf(buf, "%d\n", di->curr_status.curr_step);
 }
 
-static ssize_t abx500_chargalg_curr_step_store(struct abx500_chargalg *di,
+static ssize_t ab8500_chargalg_curr_step_store(struct ab8500_chargalg *di,
 					       const char *buf, size_t length)
 {
-	long int param;
+	long param;
 	int ret;
 
 	ret = kstrtol(buf, 10, &param);
···
 }
 
 
-static ssize_t abx500_chargalg_en_show(struct abx500_chargalg *di,
+static ssize_t ab8500_chargalg_en_show(struct ab8500_chargalg *di,
 				       char *buf)
 {
 	return sprintf(buf, "%d\n",
···
 		       di->susp_status.usb_suspended);
 }
 
-static ssize_t abx500_chargalg_en_store(struct abx500_chargalg *di,
+static ssize_t ab8500_chargalg_en_store(struct ab8500_chargalg *di,
 	const char *buf, size_t length)
 {
-	long int param;
+	long param;
 	int ac_usb;
 	int ret;
 
···
 	return strlen(buf);
 }
 
-static struct abx500_chargalg_sysfs_entry abx500_chargalg_en_charger =
-	__ATTR(chargalg, 0644, abx500_chargalg_en_show,
-				abx500_chargalg_en_store);
+static struct ab8500_chargalg_sysfs_entry ab8500_chargalg_en_charger =
+	__ATTR(chargalg, 0644, ab8500_chargalg_en_show,
+				ab8500_chargalg_en_store);
 
-static struct abx500_chargalg_sysfs_entry abx500_chargalg_curr_step =
-	__ATTR(chargalg_curr_step, 0644, abx500_chargalg_curr_step_show,
-					abx500_chargalg_curr_step_store);
+static struct ab8500_chargalg_sysfs_entry ab8500_chargalg_curr_step =
+	__ATTR(chargalg_curr_step, 0644, ab8500_chargalg_curr_step_show,
+					ab8500_chargalg_curr_step_store);
 
-static ssize_t abx500_chargalg_sysfs_show(struct kobject *kobj,
+static ssize_t ab8500_chargalg_sysfs_show(struct kobject *kobj,
 	struct attribute *attr, char *buf)
 {
-	struct abx500_chargalg_sysfs_entry *entry = container_of(attr,
-		struct abx500_chargalg_sysfs_entry, attr);
+	struct ab8500_chargalg_sysfs_entry *entry = container_of(attr,
+		struct ab8500_chargalg_sysfs_entry, attr);
 
-	struct abx500_chargalg *di = container_of(kobj,
-		struct abx500_chargalg, chargalg_kobject);
+	struct ab8500_chargalg *di = container_of(kobj,
+		struct ab8500_chargalg, chargalg_kobject);
 
 	if (!entry->show)
 		return -EIO;
···
 	return entry->show(di, buf);
 }
 
-static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj,
+static ssize_t ab8500_chargalg_sysfs_charger(struct kobject *kobj,
 	struct attribute *attr, const char *buf, size_t length)
 {
-	struct abx500_chargalg_sysfs_entry *entry = container_of(attr,
-		struct abx500_chargalg_sysfs_entry, attr);
+	struct ab8500_chargalg_sysfs_entry *entry = container_of(attr,
+		struct ab8500_chargalg_sysfs_entry, attr);
 
-	struct abx500_chargalg *di = container_of(kobj,
-		struct abx500_chargalg, chargalg_kobject);
+	struct ab8500_chargalg *di = container_of(kobj,
+		struct ab8500_chargalg, chargalg_kobject);
 
 	if (!entry->store)
 		return -EIO;
···
 	return entry->store(di, buf, length);
 }
 
-static struct attribute *abx500_chargalg_chg[] = {
-	&abx500_chargalg_en_charger.attr,
-	&abx500_chargalg_curr_step.attr,
+static struct attribute *ab8500_chargalg_chg[] = {
+	&ab8500_chargalg_en_charger.attr,
+	&ab8500_chargalg_curr_step.attr,
 	NULL,
 };
 
-static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
-	.show = abx500_chargalg_sysfs_show,
-	.store = abx500_chargalg_sysfs_charger,
+static const struct sysfs_ops ab8500_chargalg_sysfs_ops = {
+	.show = ab8500_chargalg_sysfs_show,
+	.store = ab8500_chargalg_sysfs_charger,
 };
 
-static struct kobj_type abx500_chargalg_ktype = {
-	.sysfs_ops = &abx500_chargalg_sysfs_ops,
-	.default_attrs = abx500_chargalg_chg,
+static struct kobj_type ab8500_chargalg_ktype = {
+	.sysfs_ops = &ab8500_chargalg_sysfs_ops,
+	.default_attrs = ab8500_chargalg_chg,
 };
 
 /**
- * abx500_chargalg_sysfs_exit() - de-init of sysfs entry
- * @di:                pointer to the struct abx500_chargalg
+ * ab8500_chargalg_sysfs_exit() - de-init of sysfs entry
+ * @di:                pointer to the struct ab8500_chargalg
  *
  * This function removes the entry in sysfs.
  */
-static void abx500_chargalg_sysfs_exit(struct abx500_chargalg *di)
+static void ab8500_chargalg_sysfs_exit(struct ab8500_chargalg *di)
 {
 	kobject_del(&di->chargalg_kobject);
 }
 
 /**
- * abx500_chargalg_sysfs_init() - init of sysfs entry
- * @di:                pointer to the struct abx500_chargalg
+ * ab8500_chargalg_sysfs_init() - init of sysfs entry
+ * @di:                pointer to the struct ab8500_chargalg
  *
  * This function adds an entry in sysfs.
  * Returns error code in case of failure else 0(on success)
  */
-static int abx500_chargalg_sysfs_init(struct abx500_chargalg *di)
+static int ab8500_chargalg_sysfs_init(struct ab8500_chargalg *di)
 {
 	int ret = 0;
 
 	ret = kobject_init_and_add(&di->chargalg_kobject,
-		&abx500_chargalg_ktype,
-		NULL, "abx500_chargalg");
+		&ab8500_chargalg_ktype,
+		NULL, "ab8500_chargalg");
 	if (ret < 0)
 		dev_err(di->dev, "failed to create sysfs entry\n");
 
···
 }
 /* Exposure to the sysfs interface <<END>> */
 
-static int __maybe_unused abx500_chargalg_resume(struct device *dev)
+static int __maybe_unused ab8500_chargalg_resume(struct device *dev)
 {
-	struct abx500_chargalg *di = dev_get_drvdata(dev);
+	struct ab8500_chargalg *di = dev_get_drvdata(dev);
 
 	/* Kick charger watchdog if charging (any charger online) */
 	if (di->chg_info.online_chg)
···
 	return 0;
 }
 
-static int __maybe_unused abx500_chargalg_suspend(struct device *dev)
+static int __maybe_unused ab8500_chargalg_suspend(struct device *dev)
 {
-	struct abx500_chargalg *di = dev_get_drvdata(dev);
+	struct ab8500_chargalg *di = dev_get_drvdata(dev);
 
 	if (di->chg_info.online_chg)
 		cancel_delayed_work_sync(&di->chargalg_wd_work);
···
 	"ab8500_fg",
 };
 
-static const struct power_supply_desc abx500_chargalg_desc = {
-	.name			= "abx500_chargalg",
+static const struct power_supply_desc ab8500_chargalg_desc = {
+	.name			= "ab8500_chargalg",
 	.type			= POWER_SUPPLY_TYPE_BATTERY,
-	.properties		= abx500_chargalg_props,
-	.num_properties		= ARRAY_SIZE(abx500_chargalg_props),
-	.get_property		= abx500_chargalg_get_property,
-	.external_power_changed	= abx500_chargalg_external_power_changed,
+	.properties		= ab8500_chargalg_props,
+	.num_properties		= ARRAY_SIZE(ab8500_chargalg_props),
+	.get_property		= ab8500_chargalg_get_property,
+	.external_power_changed	= ab8500_chargalg_external_power_changed,
 };
 
-static int abx500_chargalg_bind(struct device *dev, struct device *master,
+static int ab8500_chargalg_bind(struct device *dev, struct device *master,
 				void *data)
 {
-	struct abx500_chargalg *di = dev_get_drvdata(dev);
+	struct ab8500_chargalg *di = dev_get_drvdata(dev);
 
 	/* Create a work queue for the chargalg */
-	di->chargalg_wq = alloc_ordered_workqueue("abx500_chargalg_wq",
+	di->chargalg_wq = alloc_ordered_workqueue("ab8500_chargalg_wq",
 						  WQ_MEM_RECLAIM);
 	if (di->chargalg_wq == NULL) {
 		dev_err(di->dev, "failed to create work queue\n");
···
 	return 0;
 }
 
-static void abx500_chargalg_unbind(struct device *dev, struct device *master,
+static void ab8500_chargalg_unbind(struct device *dev, struct device *master,
 				   void *data)
 {
-	struct abx500_chargalg *di = dev_get_drvdata(dev);
+	struct ab8500_chargalg *di = dev_get_drvdata(dev);
 
 	/* Stop all timers and work */
 	hrtimer_cancel(&di->safety_timer);
···
 	flush_scheduled_work();
 }
 
-static const struct component_ops abx500_chargalg_component_ops = {
-	.bind = abx500_chargalg_bind,
-	.unbind = abx500_chargalg_unbind,
+static const struct component_ops ab8500_chargalg_component_ops = {
+	.bind = ab8500_chargalg_bind,
+	.unbind = ab8500_chargalg_unbind,
 };
 
-static int abx500_chargalg_probe(struct platform_device *pdev)
+static int ab8500_chargalg_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct power_supply_config psy_cfg = {};
-	struct abx500_chargalg *di;
+	struct ab8500_chargalg *di;
 	int ret = 0;
 
 	di = devm_kzalloc(dev, sizeof(*di), GFP_KERNEL);
···
 
 	/* Initilialize safety timer */
 	hrtimer_init(&di->safety_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
-	di->safety_timer.function = abx500_chargalg_safety_timer_expired;
+	di->safety_timer.function = ab8500_chargalg_safety_timer_expired;
 
 	/* Initilialize maintenance timer */
 	hrtimer_init(&di->maintenance_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
 	di->maintenance_timer.function =
-		abx500_chargalg_maintenance_timer_expired;
+		ab8500_chargalg_maintenance_timer_expired;
 
 	/* Init work for chargalg */
 	INIT_DEFERRABLE_WORK(&di->chargalg_periodic_work,
-		abx500_chargalg_periodic_work);
+		ab8500_chargalg_periodic_work);
 	INIT_DEFERRABLE_WORK(&di->chargalg_wd_work,
-		abx500_chargalg_wd_work);
+		ab8500_chargalg_wd_work);
 
 	/* Init work for chargalg */
-	INIT_WORK(&di->chargalg_work, abx500_chargalg_work);
+	INIT_WORK(&di->chargalg_work, ab8500_chargalg_work);
 
 	/* To detect charger at startup */
 	di->chg_info.prev_conn_chg = -1;
 
 	/* Register chargalg power supply class */
 	di->chargalg_psy = devm_power_supply_register(di->dev,
-						 &abx500_chargalg_desc,
+						 &ab8500_chargalg_desc,
 						 &psy_cfg);
 	if (IS_ERR(di->chargalg_psy)) {
 		dev_err(di->dev, "failed to register chargalg psy\n");
···
 	platform_set_drvdata(pdev, di);
 
 	/* sysfs interface to enable/disable charging from user space */
-	ret = abx500_chargalg_sysfs_init(di);
+	ret = ab8500_chargalg_sysfs_init(di);
 	if (ret) {
 		dev_err(di->dev, "failed to create sysfs entry\n");
 		return ret;
···
 	di->curr_status.curr_step = CHARGALG_CURR_STEP_HIGH;
 
 	dev_info(di->dev, "probe success\n");
-	return component_add(dev, &abx500_chargalg_component_ops);
+	return component_add(dev, &ab8500_chargalg_component_ops);
 }
 
-static int abx500_chargalg_remove(struct platform_device *pdev)
+static int ab8500_chargalg_remove(struct platform_device *pdev)
 {
-	struct abx500_chargalg *di = platform_get_drvdata(pdev);
+	struct ab8500_chargalg *di = platform_get_drvdata(pdev);
 
-	component_del(&pdev->dev, &abx500_chargalg_component_ops);
+	component_del(&pdev->dev, &ab8500_chargalg_component_ops);
 
 	/* sysfs interface to enable/disable charging from user space */
-	abx500_chargalg_sysfs_exit(di);
+	ab8500_chargalg_sysfs_exit(di);
 
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(abx500_chargalg_pm_ops, abx500_chargalg_suspend, abx500_chargalg_resume);
+static SIMPLE_DEV_PM_OPS(ab8500_chargalg_pm_ops, ab8500_chargalg_suspend, ab8500_chargalg_resume);
 
 static const struct of_device_id ab8500_chargalg_match[] = {
 	{ .compatible = "stericsson,ab8500-chargalg", },
 	{ },
 };
 
-struct platform_driver abx500_chargalg_driver = {
-	.probe = abx500_chargalg_probe,
-	.remove = abx500_chargalg_remove,
+struct platform_driver ab8500_chargalg_driver = {
+	.probe = ab8500_chargalg_probe,
+	.remove = ab8500_chargalg_remove,
 	.driver = {
-		.name = "ab8500-chargalg",
+		.name = "ab8500_chargalg",
 		.of_match_table = ab8500_chargalg_match,
-		.pm = &abx500_chargalg_pm_ops,
+		.pm = &ab8500_chargalg_pm_ops,
 	},
 };
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Johan Palsson, Karl Komierowski");
-MODULE_ALIAS("platform:abx500-chargalg");
-MODULE_DESCRIPTION("abx500 battery charging algorithm");
+MODULE_ALIAS("platform:ab8500-chargalg");
+MODULE_DESCRIPTION("ab8500 battery charging algorithm");

drivers/power/supply/axp288_charger.c

···
 	if (val == 0)
 		return -ENODEV;
 
-	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
···
 
 	info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME);
 	if (info->cable.edev == NULL) {
-		dev_dbg(&pdev->dev, "%s is not ready, probe deferred\n",
+		dev_dbg(dev, "%s is not ready, probe deferred\n",
 			AXP288_EXTCON_DEV_NAME);
 		return -EPROBE_DEFER;
 	}
···
 			dev_dbg(dev, "EXTCON_USB_HOST is not ready, probe deferred\n");
 			return -EPROBE_DEFER;
 		}
-		dev_info(&pdev->dev,
-			 "Using " USB_HOST_EXTCON_HID " extcon for usb-id\n");
+		dev_info(dev, "Using " USB_HOST_EXTCON_HID " extcon for usb-id\n");
 	}
 
 	platform_set_drvdata(pdev, info);
···
 	INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker);
 	info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt;
 	if (info->otg.cable) {
-		ret = devm_extcon_register_notifier(&pdev->dev, info->otg.cable,
+		ret = devm_extcon_register_notifier(dev, info->otg.cable,
 					EXTCON_USB_HOST, &info->otg.id_nb);
 		if (ret) {
 			dev_err(dev, "failed to register EXTCON_USB_HOST notifier\n");
···
 					NULL, axp288_charger_irq_thread_handler,
 					IRQF_ONESHOT, info->pdev->name, info);
 		if (ret) {
-			dev_err(&pdev->dev, "failed to request interrupt=%d\n",
+			dev_err(dev, "failed to request interrupt=%d\n",
 								info->irq[i]);
 			return ret;
 		}

drivers/power/supply/axp288_fuel_gauge.c

···
 /*
  * axp288_fuel_gauge.c - Xpower AXP288 PMIC Fuel Gauge Driver
  *
- * Copyright (C) 2016-2017 Hans de Goede <[e-mail]>
+ * Copyright (C) 2020-2021 Andrejus Basovas <[e-mail]>
+ * Copyright (C) 2016-2021 Hans de Goede <[e-mail]>
  * Copyright (C) 2014 Intel Corporation
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
···
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
 #include <linux/iio/consumer.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
 #include <asm/unaligned.h>
+#include <asm/iosf_mbi.h>
 
-#define PS_STAT_VBUS_TRIGGER		(1 << 0)
-#define PS_STAT_BAT_CHRG_DIR		(1 << 2)
-#define PS_STAT_VBAT_ABOVE_VHOLD	(1 << 3)
-#define PS_STAT_VBUS_VALID		(1 << 4)
-#define PS_STAT_VBUS_PRESENT		(1 << 5)
+#define PS_STAT_VBUS_TRIGGER			(1 << 0)
+#define PS_STAT_BAT_CHRG_DIR			(1 << 2)
+#define PS_STAT_VBAT_ABOVE_VHOLD		(1 << 3)
+#define PS_STAT_VBUS_VALID			(1 << 4)
+#define PS_STAT_VBUS_PRESENT			(1 << 5)
 
-#define CHRG_STAT_BAT_SAFE_MODE		(1 << 3)
+#define CHRG_STAT_BAT_SAFE_MODE			(1 << 3)
 #define CHRG_STAT_BAT_VALID			(1 << 4)
-#define CHRG_STAT_BAT_PRESENT		(1 << 5)
+#define CHRG_STAT_BAT_PRESENT			(1 << 5)
 #define CHRG_STAT_CHARGING			(1 << 6)
 #define CHRG_STAT_PMIC_OTP			(1 << 7)
 
 #define CHRG_CCCV_CC_MASK			0xf     /* 4 bits */
-#define CHRG_CCCV_CC_BIT_POS		0
+#define CHRG_CCCV_CC_BIT_POS			0
 #define CHRG_CCCV_CC_OFFSET			200     /* 200mA */
-#define CHRG_CCCV_CC_LSB_RES		200     /* 200mA */
+#define CHRG_CCCV_CC_LSB_RES			200     /* 200mA */
 #define CHRG_CCCV_ITERM_20P			(1 << 4)    /* 20% of CC */
 #define CHRG_CCCV_CV_MASK			0x60        /* 2 bits */
-#define CHRG_CCCV_CV_BIT_POS		5
+#define CHRG_CCCV_CV_BIT_POS			5
 #define CHRG_CCCV_CV_4100MV			0x0     /* 4.10V */
 #define CHRG_CCCV_CV_4150MV			0x1     /* 4.15V */
 #define CHRG_CCCV_CV_4200MV			0x2     /* 4.20V */
 #define CHRG_CCCV_CV_4350MV			0x3     /* 4.35V */
 #define CHRG_CCCV_CHG_EN			(1 << 7)
 
-#define FG_CNTL_OCV_ADJ_STAT		(1 << 2)
+#define FG_CNTL_OCV_ADJ_STAT			(1 << 2)
 #define FG_CNTL_OCV_ADJ_EN			(1 << 3)
-#define FG_CNTL_CAP_ADJ_STAT		(1 << 4)
+#define FG_CNTL_CAP_ADJ_STAT			(1 << 4)
 #define FG_CNTL_CAP_ADJ_EN			(1 << 5)
 #define FG_CNTL_CC_EN				(1 << 6)
 #define FG_CNTL_GAUGE_EN			(1 << 7)
···
 #define FG_CC_CAP_VALID				(1 << 7)
 #define FG_CC_CAP_VAL_MASK			0x7F
 
-#define FG_LOW_CAP_THR1_MASK		0xf0    /* 5% tp 20% */
+#define FG_LOW_CAP_THR1_MASK			0xf0    /* 5% tp 20% */
 #define FG_LOW_CAP_THR1_VAL			0xa0    /* 15 perc */
-#define FG_LOW_CAP_THR2_MASK		0x0f    /* 0% to 15% */
+#define FG_LOW_CAP_THR2_MASK			0x0f    /* 0% to 15% */
 #define FG_LOW_CAP_WARN_THR			14  /* 14 perc */
 #define FG_LOW_CAP_CRIT_THR			4   /* 4 perc */
 #define FG_LOW_CAP_SHDN_THR			0   /* 0 perc */
 
-#define NR_RETRY_CNT    3
-#define DEV_NAME	"axp288_fuel_gauge"
+#define DEV_NAME				"axp288_fuel_gauge"
 
 /* 1.1mV per LSB expressed in uV */
 #define VOLTAGE_FROM_ADC(a)			((a * 11) / 10)
 /* properties converted to uV, uA */
-#define PROP_VOLT(a)		((a) * 1000)
-#define PROP_CURR(a)		((a) * 1000)
+#define PROP_VOLT(a)				((a) * 1000)
+#define PROP_CURR(a)				((a) * 1000)
 
-#define AXP288_FG_INTR_NUM	6
+#define AXP288_REG_UPDATE_INTERVAL		(60 * HZ)
+#define AXP288_FG_INTR_NUM			6
 enum {
 	QWBTU_IRQ = 0,
 	WBTU_IRQ,
···
 };
 
 enum {
-	BAT_TEMP = 0,
-	PMIC_TEMP,
-	SYSTEM_TEMP,
 	BAT_CHRG_CURR,
 	BAT_D_CURR,
 	BAT_VOLT,
···
 };
 
 struct axp288_fg_info {
-	struct platform_device *pdev;
+	struct device *dev;
 	struct regmap *regmap;
 	struct regmap_irq_chip_data *regmap_irqc;
 	int irq[AXP288_FG_INTR_NUM];
···
 	struct mutex lock;
 	int status;
 	int max_volt;
+	int pwr_op;
+	int low_cap;
 	struct dentry *debug_file;
+
+	char valid;                 /* zero until following fields are valid */
+	unsigned long last_updated; /* in jiffies */
+
+	int pwr_stat;
+	int fg_res;
+	int bat_volt;
+	int d_curr;
+	int c_curr;
+	int ocv;
+	int fg_cc_mtr1;
+	int fg_des_cap1;
 };
 
 static enum power_supply_property fuel_gauge_props[] = {
···
 
 static int fuel_gauge_reg_readb(struct axp288_fg_info *info, int reg)
 {
-	int ret, i;
 	unsigned int val;
+	int ret;
 
-	for (i = 0; i < NR_RETRY_CNT; i++) {
-		ret = regmap_read(info->regmap, reg, &val);
-		if (ret != -EBUSY)
-			break;
-	}
-
+	ret = regmap_read(info->regmap, reg, &val);
 	if (ret < 0) {
-		dev_err(&info->pdev->dev, "axp288 reg read err:%d\n", ret);
+		dev_err(info->dev, "Error reading reg 0x%02x err: %d\n", reg, ret);
 		return ret;
 	}
 
···
 	ret = regmap_write(info->regmap, reg, (unsigned int)val);
 
 	if (ret < 0)
-		dev_err(&info->pdev->dev, "axp288 reg write err:%d\n", ret);
+		dev_err(info->dev, "Error writing reg 0x%02x err: %d\n", reg, ret);
 
 	return ret;
 }
···
 
 	ret = regmap_bulk_read(info->regmap, reg, buf, 2);
 	if (ret < 0) {
-		dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
-			reg, ret);
+		dev_err(info->dev, "Error reading reg 0x%02x err: %d\n", reg, ret);
 		return ret;
 	}
 
 	ret = get_unaligned_be16(buf);
 	if (!(ret & FG_15BIT_WORD_VALID)) {
-		dev_err(&info->pdev->dev, "Error reg 0x%02x contents not valid\n",
-			reg);
+		dev_err(info->dev, "Error reg 0x%02x contents not valid\n", reg);
 		return -ENXIO;
 	}
 
···
 
 	ret = regmap_bulk_read(info->regmap, reg, buf, 2);
 	if (ret < 0) {
-		dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
-			reg, ret);
+		dev_err(info->dev, "Error reading reg 0x%02x err: %d\n", reg, ret);
 		return ret;
 	}
 
···
 	return (buf[0] << 4) | ((buf[1] >> 4) & 0x0f);
 }
 
-#ifdef CONFIG_DEBUG_FS
-static int fuel_gauge_debug_show(struct seq_file *s, void *data)
+static int fuel_gauge_update_registers(struct axp288_fg_info *info)
 {
-	struct axp288_fg_info *info = s->private;
-	int raw_val, ret;
+	int ret;
 
-	seq_printf(s, " PWR_STATUS[%02x] : %02x\n",
-		AXP20X_PWR_INPUT_STATUS,
-		fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS));
-	seq_printf(s, "PWR_OP_MODE[%02x] : %02x\n",
-		AXP20X_PWR_OP_MODE,
-		fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE));
-	seq_printf(s, " CHRG_CTRL1[%02x] : %02x\n",
-		AXP20X_CHRG_CTRL1,
-		fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1));
-	seq_printf(s, "       VLTF[%02x] : %02x\n",
-		AXP20X_V_LTF_DISCHRG,
-		fuel_gauge_reg_readb(info, AXP20X_V_LTF_DISCHRG));
-	seq_printf(s, "       VHTF[%02x] : %02x\n",
-		AXP20X_V_HTF_DISCHRG,
-		fuel_gauge_reg_readb(info, AXP20X_V_HTF_DISCHRG));
-	seq_printf(s, "    CC_CTRL[%02x] : %02x\n",
-		AXP20X_CC_CTRL,
-		fuel_gauge_reg_readb(info, AXP20X_CC_CTRL));
-	seq_printf(s, "BATTERY CAP[%02x] : %02x\n",
-		AXP20X_FG_RES,
-		fuel_gauge_reg_readb(info, AXP20X_FG_RES));
-	seq_printf(s, "    FG_RDC1[%02x] : %02x\n",
-		AXP288_FG_RDC1_REG,
-		fuel_gauge_reg_readb(info, AXP288_FG_RDC1_REG));
-	seq_printf(s, "    FG_RDC0[%02x] : %02x\n",
-		AXP288_FG_RDC0_REG,
-		fuel_gauge_reg_readb(info, AXP288_FG_RDC0_REG));
-	seq_printf(s, "     FG_OCV[%02x] : %04x\n",
-		AXP288_FG_OCVH_REG,
-		fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG));
-	seq_printf(s, " FG_DES_CAP[%02x] : %04x\n",
-		AXP288_FG_DES_CAP1_REG,
-		fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG));
-	seq_printf(s, "  FG_CC_MTR[%02x] : %04x\n",
-		AXP288_FG_CC_MTR1_REG,
-		fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG));
-	seq_printf(s, " FG_OCV_CAP[%02x] : %02x\n",
-		AXP288_FG_OCV_CAP_REG,
-		fuel_gauge_reg_readb(info, AXP288_FG_OCV_CAP_REG));
-	seq_printf(s, "  FG_CC_CAP[%02x] : %02x\n",
-		AXP288_FG_CC_CAP_REG,
-		fuel_gauge_reg_readb(info, AXP288_FG_CC_CAP_REG));
-	seq_printf(s, " FG_LOW_CAP[%02x] : %02x\n",
-		AXP288_FG_LOW_CAP_REG,
-		fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG));
-	seq_printf(s, "TUNING_CTL0[%02x] : %02x\n",
-		AXP288_FG_TUNE0,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE0));
-	seq_printf(s, "TUNING_CTL1[%02x] : %02x\n",
-		AXP288_FG_TUNE1,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE1));
-	seq_printf(s, "TUNING_CTL2[%02x] : %02x\n",
-		AXP288_FG_TUNE2,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE2));
-	seq_printf(s, "TUNING_CTL3[%02x] : %02x\n",
-		AXP288_FG_TUNE3,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE3));
-	seq_printf(s, "TUNING_CTL4[%02x] : %02x\n",
-		AXP288_FG_TUNE4,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE4));
-	seq_printf(s, "TUNING_CTL5[%02x] : %02x\n",
-		AXP288_FG_TUNE5,
-		fuel_gauge_reg_readb(info, AXP288_FG_TUNE5));
+	if (info->valid && time_before(jiffies, info->last_updated + AXP288_REG_UPDATE_INTERVAL))
+		return 0;
 
-	ret = iio_read_channel_raw(info->iio_channel[BAT_TEMP], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-batttemp : %d\n", raw_val);
-	ret = iio_read_channel_raw(info->iio_channel[PMIC_TEMP], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-pmictemp : %d\n", raw_val);
-	ret = iio_read_channel_raw(info->iio_channel[SYSTEM_TEMP], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-systtemp : %d\n", raw_val);
-	ret = iio_read_channel_raw(info->iio_channel[BAT_CHRG_CURR], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-chrgcurr : %d\n", raw_val);
-	ret = iio_read_channel_raw(info->iio_channel[BAT_D_CURR], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-dchrgcur : %d\n", raw_val);
-	ret = iio_read_channel_raw(info->iio_channel[BAT_VOLT], &raw_val);
-	if (ret >= 0)
-		seq_printf(s, "axp288-battvolt : %d\n", raw_val);
+	dev_dbg(info->dev, "Fuel Gauge updating register values...\n");
 
-	return 0;
+	ret = iosf_mbi_block_punit_i2c_access();
+	if (ret < 0)
+		return ret;
+
+	ret = fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS);
+	if (ret < 0)
+		goto out;
+	info->pwr_stat = ret;
+
+	ret = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
+	if (ret < 0)
+		goto out;
+	info->fg_res = ret;
+
+	ret = iio_read_channel_raw(info->iio_channel[BAT_VOLT], &info->bat_volt);
+	if (ret < 0)
+		goto out;
+
+	if (info->pwr_stat & PS_STAT_BAT_CHRG_DIR) {
+		info->d_curr = 0;
+		ret = iio_read_channel_raw(info->iio_channel[BAT_CHRG_CURR], &info->c_curr);
+		if (ret < 0)
+			goto out;
+	} else {
+		info->c_curr = 0;
+		ret = iio_read_channel_raw(info->iio_channel[BAT_D_CURR], &info->d_curr);
+		if (ret < 0)
+			goto out;
+	}
+
+	ret = fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG);
+	if (ret < 0)
+		goto out;
+	info->ocv = ret;
+
+	ret = fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG);
+	if (ret < 0)
+		goto out;
+	info->fg_cc_mtr1 = ret;
+
+	ret = fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG);
+	if (ret < 0)
+		goto out;
+	info->fg_des_cap1 = ret;
+
+	info->last_updated = jiffies;
+	info->valid = 1;
+	ret = 0;
+out:
+	iosf_mbi_unblock_punit_i2c_access();
+	return ret;
 }
-
-DEFINE_SHOW_ATTRIBUTE(fuel_gauge_debug);
-
-static void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
-{
-	info->debug_file = debugfs_create_file("fuelgauge", 0666, NULL,
-		info, &fuel_gauge_debug_fops);
-}
-
-static void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
-{
-	debugfs_remove(info->debug_file);
-}
-#else
-static inline void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
-{
-}
-static inline void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
-{
-}
-#endif
 
 static void fuel_gauge_get_status(struct axp288_fg_info *info)
 {
-	int pwr_stat, fg_res, curr, ret;
-
-	pwr_stat = fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS);
-	if (pwr_stat < 0) {
-		dev_err(&info->pdev->dev,
-			"PWR STAT read failed:%d\n", pwr_stat);
-		return;
-	}
+	int pwr_stat = info->pwr_stat;
+	int fg_res = info->fg_res;
+	int curr = info->d_curr;
 
 	/* Report full if Vbus is valid and the reported capacity is 100% */
 	if (!(pwr_stat & PS_STAT_VBUS_VALID))
 		goto not_full;
 
-	fg_res = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
-	if (fg_res < 0) {
-		dev_err(&info->pdev->dev, "FG RES read failed: %d\n", fg_res);
-		return;
-	}
 	if (!(fg_res & FG_REP_CAP_VALID))
 		goto not_full;
 
···
 	if (fg_res < 90 || (pwr_stat & PS_STAT_BAT_CHRG_DIR))
 		goto not_full;
 
-	ret = iio_read_channel_raw(info->iio_channel[BAT_D_CURR], &curr);
-	if (ret < 0) {
-		dev_err(&info->pdev->dev, "FG get current failed: %d\n", ret);
-		return;
-	}
 	if (curr == 0) {
 		info->status = POWER_SUPPLY_STATUS_FULL;
 		return;
···
 		info->status = POWER_SUPPLY_STATUS_DISCHARGING;
 }
 
-static int fuel_gauge_get_vbatt(struct axp288_fg_info *info, int *vbatt)
-{
-	int ret = 0, raw_val;
-
-	ret = iio_read_channel_raw(info->iio_channel[BAT_VOLT], &raw_val);
-	if (ret < 0)
-		goto vbatt_read_fail;
-
-	*vbatt = VOLTAGE_FROM_ADC(raw_val);
-vbatt_read_fail:
-	return ret;
-}
-
-static int fuel_gauge_get_current(struct axp288_fg_info *info, int *cur)
-{
-	int ret, discharge;
-
-	/* First check discharge current, so that we do only 1 read on bat. */
-	ret = iio_read_channel_raw(info->iio_channel[BAT_D_CURR], &discharge);
-	if (ret < 0)
-		return ret;
-
-	if (discharge > 0) {
-		*cur = -1 * discharge;
-		return 0;
-	}
-
-	return iio_read_channel_raw(info->iio_channel[BAT_CHRG_CURR], cur);
-}
-
-static int fuel_gauge_get_vocv(struct axp288_fg_info *info, int *vocv)
-{
-	int ret;
-
-	ret = fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG);
-	if (ret >= 0)
-		*vocv = VOLTAGE_FROM_ADC(ret);
-
-	return ret;
-}
-
 static int fuel_gauge_battery_health(struct axp288_fg_info *info)
 {
-	int ret, vocv, health = POWER_SUPPLY_HEALTH_UNKNOWN;
-
-	ret = fuel_gauge_get_vocv(info, &vocv);
-	if (ret < 0)
-		goto health_read_fail;
+	int vocv = VOLTAGE_FROM_ADC(info->ocv);
+	int health = POWER_SUPPLY_HEALTH_UNKNOWN;
 
 	if (vocv > info->max_volt)
 		health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
 	else
 		health = POWER_SUPPLY_HEALTH_GOOD;
 
-health_read_fail:
 	return health;
 }
 
···
 		union power_supply_propval *val)
 {
 	struct axp288_fg_info *info = power_supply_get_drvdata(ps);
-	int ret = 0, value;
+	int ret, value;
 
 	mutex_lock(&info->lock);
+
+	ret = fuel_gauge_update_registers(info);
+	if (ret < 0)
+		goto out;
+
 	switch (prop) {
 	case POWER_SUPPLY_PROP_STATUS:
 		fuel_gauge_get_status(info);
···
 		val->intval = fuel_gauge_battery_health(info);
 		break;
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
-		ret = fuel_gauge_get_vbatt(info, &value);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
+		value = VOLTAGE_FROM_ADC(info->bat_volt);
 		val->intval = PROP_VOLT(value);
 		break;
 	case POWER_SUPPLY_PROP_VOLTAGE_OCV:
-		ret = fuel_gauge_get_vocv(info, &value);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
+		value = VOLTAGE_FROM_ADC(info->ocv);
 		val->intval = PROP_VOLT(value);
 		break;
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
-		ret = fuel_gauge_get_current(info, &value);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
+		if (info->d_curr > 0)
+			value = -1 * info->d_curr;
+		else
+			value = info->c_curr;
+
 		val->intval = PROP_CURR(value);
 		break;
 	case POWER_SUPPLY_PROP_PRESENT:
-		ret = fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
-
-		if (ret & CHRG_STAT_BAT_PRESENT)
+		if (info->pwr_op & CHRG_STAT_BAT_PRESENT)
 			val->intval = 1;
 		else
 			val->intval = 0;
 		break;
 	case POWER_SUPPLY_PROP_CAPACITY:
-		ret = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
-
-		if (!(ret & FG_REP_CAP_VALID))
-			dev_err(&info->pdev->dev,
-				"capacity measurement not valid\n");
-		val->intval = (ret & FG_REP_CAP_VAL_MASK);
+		if (!(info->fg_res & FG_REP_CAP_VALID))
+			dev_err(info->dev, "capacity measurement not valid\n");
+		val->intval = (info->fg_res & FG_REP_CAP_VAL_MASK);
 		break;
 	case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
-		ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
-		val->intval = (ret & 0x0f);
+		val->intval = (info->low_cap & 0x0f);
 		break;
 	case POWER_SUPPLY_PROP_TECHNOLOGY:
 		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
 		break;
 	case POWER_SUPPLY_PROP_CHARGE_NOW:
-		ret = fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
-
-		val->intval = ret * FG_DES_CAP_RES_LSB;
+		val->intval = info->fg_cc_mtr1 * FG_DES_CAP_RES_LSB;
 		break;
 	case POWER_SUPPLY_PROP_CHARGE_FULL:
-		ret = fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG);
-		if (ret < 0)
-			goto fuel_gauge_read_err;
-
-		val->intval = ret * FG_DES_CAP_RES_LSB;
+		val->intval = info->fg_des_cap1 * FG_DES_CAP_RES_LSB;
 		break;
 	case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
 		val->intval = PROP_VOLT(info->max_volt);
 		break;
 	default:
-		mutex_unlock(&info->lock);
-		return -EINVAL;
+		ret = -EINVAL;
 	}
 
-	mutex_unlock(&info->lock);
-	return 0;
-
-fuel_gauge_read_err:
+out:
 	mutex_unlock(&info->lock);
 	return ret;
 }
···
 		const union power_supply_propval *val)
 {
 	struct axp288_fg_info *info = power_supply_get_drvdata(ps);
-	int ret = 0;
+	int new_low_cap, ret = 0;
 
 	mutex_lock(&info->lock);
 	switch (prop) {
···
 			ret = -EINVAL;
 			break;
 		}
-		ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
-		if (ret < 0)
-			break;
-		ret &= 0xf0;
-		ret |= (val->intval & 0xf);
-		ret = fuel_gauge_reg_writeb(info, AXP288_FG_LOW_CAP_REG, ret);
+		new_low_cap = info->low_cap;
+		new_low_cap &= 0xf0;
+		new_low_cap |= (val->intval & 0xf);
+		ret = fuel_gauge_reg_writeb(info, AXP288_FG_LOW_CAP_REG, new_low_cap);
+		if (ret == 0)
+			info->low_cap = new_low_cap;
 		break;
 	default:
 		ret = -EINVAL;
···
 	}
 
 	if (i >= AXP288_FG_INTR_NUM) {
-		dev_warn(&info->pdev->dev, "spurious interrupt!!\n");
+		dev_warn(info->dev, "spurious interrupt!!\n");
 		return IRQ_NONE;
 	}
 
 	switch (i) {
 	case QWBTU_IRQ:
-		dev_info(&info->pdev->dev,
-			"Quit Battery under temperature in work mode IRQ (QWBTU)\n");
+		dev_info(info->dev, "Quit Battery under temperature in work mode IRQ (QWBTU)\n");
 		break;
 	case WBTU_IRQ:
-		dev_info(&info->pdev->dev,
-			"Battery under temperature in work mode IRQ (WBTU)\n");
+		dev_info(info->dev, "Battery under temperature in work mode IRQ (WBTU)\n");
 		break;
 	case QWBTO_IRQ:
-		dev_info(&info->pdev->dev,
-			"Quit Battery over temperature in work mode IRQ (QWBTO)\n");
+		dev_info(info->dev, "Quit Battery over temperature in work mode IRQ (QWBTO)\n");
 		break;
 	case WBTO_IRQ:
-		dev_info(&info->pdev->dev,
-			"Battery over temperature in work mode IRQ (WBTO)\n");
+		dev_info(info->dev, "Battery over temperature in work mode IRQ (WBTO)\n");
 		break;
 	case WL2_IRQ:
-		dev_info(&info->pdev->dev, "Low Batt Warning(2) INTR\n");
+		dev_info(info->dev, "Low Batt Warning(2) INTR\n");
 		break;
 	case WL1_IRQ:
-		dev_info(&info->pdev->dev, "Low Batt Warning(1) INTR\n");
+		dev_info(info->dev, "Low Batt Warning(1) INTR\n");
 		break;
 	default:
-		dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n");
+		dev_warn(info->dev, "Spurious Interrupt!!!\n");
 	}
+
+	info->valid = 0; /* Force updating of the cached registers */
 
 	power_supply_changed(info->bat);
 	return IRQ_HANDLED;
···
 {
 	struct axp288_fg_info *info = power_supply_get_drvdata(psy);
 
+	info->valid = 0; /* Force updating of the cached registers */
 	power_supply_changed(info->bat);
 }
 
···
 	.external_power_changed	= fuel_gauge_external_power_changed,
 };
 
-static void fuel_gauge_init_irq(struct axp288_fg_info *info)
+static void fuel_gauge_init_irq(struct axp288_fg_info *info, struct platform_device *pdev)
 {
 	int ret, i, pirq;
 
 	for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
-		pirq = platform_get_irq(info->pdev, i);
+		pirq = platform_get_irq(pdev, i);
 		info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq);
 		if (info->irq[i] < 0) {
-			dev_warn(&info->pdev->dev,
-				"regmap_irq get virq failed for IRQ %d: %d\n",
+			dev_warn(info->dev, "regmap_irq get virq failed for IRQ %d: %d\n",
 				pirq, info->irq[i]);
 			info->irq[i] = -1;
 			goto intr_failed;
···
 				NULL, fuel_gauge_thread_handler,
 				IRQF_ONESHOT, DEV_NAME, info);
 		if (ret) {
-			dev_warn(&info->pdev->dev,
-				"request irq failed for IRQ %d: %d\n",
+			dev_warn(info->dev, "request irq failed for IRQ %d: %d\n",
 				pirq, info->irq[i]);
 			info->irq[i] = -1;
 			goto intr_failed;
-		} else {
-			dev_info(&info->pdev->dev, "HW IRQ %d -> VIRQ %d\n",
-				pirq, info->irq[i]);
 		}
 	}
 	return;
···
 	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
 	struct power_supply_config psy_cfg = {};
 	static const char * const iio_chan_name[] = {
-		[BAT_TEMP] = "axp288-batt-temp",
-		[PMIC_TEMP] = "axp288-pmic-temp",
-		[SYSTEM_TEMP] = "axp288-system-temp",
 		[BAT_CHRG_CURR] = "axp288-chrg-curr",
 		[BAT_D_CURR] = "axp288-chrg-d-curr",
 		[BAT_VOLT] = "axp288-batt-volt",
···
 	if (dmi_check_system(axp288_no_battery_list))
 		return -ENODEV;
 
-	/*
-	 * On some devices the fuelgauge and charger parts of the axp288 are
-	 * not used, check that the fuelgauge is enabled (CC_CTRL != 0).
-	 */
-	ret = regmap_read(axp20x->regmap, AXP20X_CC_CTRL, &val);
-	if (ret < 0)
-		return ret;
-	if (val == 0)
-		return -ENODEV;
-
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
 
-	info->pdev = pdev;
+	info->dev = &pdev->dev;
 	info->regmap = axp20x->regmap;
 	info->regmap_irqc = axp20x->regmap_irqc;
 	info->status = POWER_SUPPLY_STATUS_UNKNOWN;
+	info->valid = 0;
 
 	platform_set_drvdata(pdev, info);
 
···
 		}
 	}
 
-	ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
+	ret = iosf_mbi_block_punit_i2c_access();
 	if (ret < 0)
 		goto out_free_iio_chan;
+
+	/*
+	 * On some devices the fuelgauge and charger parts of the axp288 are
+	 * not used, check that the fuelgauge is enabled (CC_CTRL != 0).
+	 */
+	ret = regmap_read(axp20x->regmap, AXP20X_CC_CTRL, &val);
+	if (ret < 0)
+		goto unblock_punit_i2c_access;
+	if (val == 0) {
+		ret = -ENODEV;
+		goto unblock_punit_i2c_access;
+	}
+
+	ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
+	if (ret < 0)
+		goto unblock_punit_i2c_access;
 
 	if (!(ret & FG_DES_CAP1_VALID)) {
 		dev_err(&pdev->dev, "axp288 not configured by firmware\n");
 		ret = -ENODEV;
-		goto out_free_iio_chan;
+		goto unblock_punit_i2c_access;
 	}
 
 	ret = fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1);
 	if (ret < 0)
-		goto out_free_iio_chan;
+		goto unblock_punit_i2c_access;
 	switch ((ret & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS) {
 	case CHRG_CCCV_CV_4100MV:
 		info->max_volt = 4100;
···
 		break;
 	}
 
+	ret = fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE);
+	if (ret < 0)
+		goto unblock_punit_i2c_access;
+	info->pwr_op = ret;
+
+	ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
+	if (ret < 0)
+		goto unblock_punit_i2c_access;
+	info->low_cap = ret;
+
+unblock_punit_i2c_access:
+	iosf_mbi_unblock_punit_i2c_access();
+	/* In case we arrive here by goto because of a register access error */
+	if (ret < 0)
+		goto out_free_iio_chan;
+
 	psy_cfg.drv_data = info;
 	info->bat = power_supply_register(&pdev->dev, &fuel_gauge_desc, &psy_cfg);
 	if (IS_ERR(info->bat)) {
···
 		goto out_free_iio_chan;
 	}
 
-	fuel_gauge_create_debugfs(info);
-	fuel_gauge_init_irq(info);
+	fuel_gauge_init_irq(info, pdev);
 
 	return 0;
 
···
 	int i;
 
 	power_supply_unregister(info->bat);
-	fuel_gauge_remove_debugfs(info);
 
 	for (i = 0; i < AXP288_FG_INTR_NUM; i++)
 		if (info->irq[i] >= 0)

drivers/power/supply/bq24735-charger.c

···
 
 #include <linux/power/bq24735-charger.h>
 
-#define BQ24735_CHG_OPT			0x12
-#define BQ24735_CHG_OPT_CHARGE_DISABLE	(1 << 0)
-#define BQ24735_CHG_OPT_AC_PRESENT	(1 << 4)
+/* BQ24735 available commands and their respective masks */
+#define BQ24735_CHARGE_OPT		0x12
 #define BQ24735_CHARGE_CURRENT		0x14
 #define BQ24735_CHARGE_CURRENT_MASK	0x1fc0
 #define BQ24735_CHARGE_VOLTAGE		0x15
···
 #define BQ24735_INPUT_CURRENT_MASK	0x1f80
 #define BQ24735_MANUFACTURER_ID		0xfe
 #define BQ24735_DEVICE_ID		0xff
+
+/* ChargeOptions bits of interest */
+#define BQ24735_CHARGE_OPT_CHG_DISABLE	(1 << 0)
+#define BQ24735_CHARGE_OPT_AC_PRESENT	(1 << 4)
 
 struct bq24735 {
 	struct power_supply		*charger;
···
 	if (ret)
 		return ret;
 
-	return bq24735_update_word(charger->client, BQ24735_CHG_OPT,
-				   BQ24735_CHG_OPT_CHARGE_DISABLE, 0);
+	return bq24735_update_word(charger->client, BQ24735_CHARGE_OPT,
+				   BQ24735_CHARGE_OPT_CHG_DISABLE, 0);
 }
 
 static inline int bq24735_disable_charging(struct bq24735 *charger)
···
 	if (charger->pdata->ext_control)
 		return 0;
 
-	return bq24735_update_word(charger->client, BQ24735_CHG_OPT,
-				   BQ24735_CHG_OPT_CHARGE_DISABLE,
-				   BQ24735_CHG_OPT_CHARGE_DISABLE);
+	return bq24735_update_word(charger->client, BQ24735_CHARGE_OPT,
+				   BQ24735_CHARGE_OPT_CHG_DISABLE,
+				   BQ24735_CHARGE_OPT_CHG_DISABLE);
 }
 
 static bool bq24735_charger_is_present(struct bq24735 *charger)
···
 	} else {
 		int ac = 0;
 
-		ac = bq24735_read_word(charger->client, BQ24735_CHG_OPT);
+		ac = bq24735_read_word(charger->client, BQ24735_CHARGE_OPT);
 		if (ac < 0) {
 			dev_dbg(&charger->client->dev,
 				"Failed to read charger options : %d\n",
 				ac);
 			return false;
 		}
-		return (ac & BQ24735_CHG_OPT_AC_PRESENT) ? true : false;
+		return (ac & BQ24735_CHARGE_OPT_AC_PRESENT) ? true : false;
 	}
 
 	return false;
···
 	if (!bq24735_charger_is_present(charger))
 		return 0;
 
-	ret  = bq24735_read_word(charger->client, BQ24735_CHG_OPT);
+	ret  = bq24735_read_word(charger->client, BQ24735_CHARGE_OPT);
 	if (ret < 0)
 		return ret;
 
-	return !(ret & BQ24735_CHG_OPT_CHARGE_DISABLE);
+	return !(ret & BQ24735_CHARGE_OPT_CHG_DISABLE);
 }
 
 static void bq24735_update(struct bq24735 *charger)

drivers/power/supply/cros_peripheral_charger.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Power supply driver for ChromeOS EC based Peripheral Device Charger.
+ *
+ * Copyright 2020 Google LLC.
+ */
+
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/slab.h>
+#include <linux/stringify.h>
+#include <linux/types.h>
+
+#define DRV_NAME		"cros-ec-pchg"
+#define PCHG_DIR_PREFIX		"peripheral"
+#define PCHG_DIR_NAME		PCHG_DIR_PREFIX "%d"
+#define PCHG_DIR_NAME_LENGTH \
+		sizeof(PCHG_DIR_PREFIX __stringify(EC_PCHG_MAX_PORTS))
+#define PCHG_CACHE_UPDATE_DELAY	msecs_to_jiffies(500)
+
+struct port_data {
+	int port_number;
+	char name[PCHG_DIR_NAME_LENGTH];
+	struct power_supply *psy;
+	struct power_supply_desc psy_desc;
+	int psy_status;
+	int battery_percentage;
+	int charge_type;
+	struct charger_data *charger;
+	unsigned long last_update;
+};
+
+struct charger_data {
+	struct device *dev;
+	struct cros_ec_dev *ec_dev;
+	struct cros_ec_device *ec_device;
+	int num_registered_psy;
+	struct port_data *ports[EC_PCHG_MAX_PORTS];
+	struct notifier_block notifier;
+};
+
+static enum power_supply_property cros_pchg_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_SCOPE,
+};
+
+static int cros_pchg_ec_command(const struct charger_data *charger,
+				unsigned int version,
+				unsigned int command,
+				const void *outdata,
+				unsigned int outsize,
+				void *indata,
+				unsigned int insize)
+{
+	struct cros_ec_dev *ec_dev = charger->ec_dev;
+	struct cros_ec_command *msg;
+	int ret;
+
+	msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
+	if (!msg)
+		return -ENOMEM;
+
+	msg->version = version;
+	msg->command = ec_dev->cmd_offset + command;
+	msg->outsize = outsize;
+	msg->insize = insize;
+
+	if (outsize)
+		memcpy(msg->data, outdata, outsize);
+
+	ret = cros_ec_cmd_xfer_status(charger->ec_device, msg);
+	if (ret >= 0 && insize)
+		memcpy(indata, msg->data, insize);
+
+	kfree(msg);
+	return ret;
+}
+
+static const unsigned int pchg_cmd_version = 1;
+
+static bool cros_pchg_cmd_ver_check(const struct charger_data *charger)
+{
+	struct ec_params_get_cmd_versions_v1 req;
+	struct ec_response_get_cmd_versions rsp;
+	int ret;
+
+	req.cmd = EC_CMD_PCHG;
+	ret = cros_pchg_ec_command(charger, 1, EC_CMD_GET_CMD_VERSIONS,
+				   &req, sizeof(req), &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_warn(charger->dev,
+			 "Unable to get versions of EC_CMD_PCHG (err:%d)\n",
+			 ret);
+		return false;
+	}
+
+	return !!(rsp.version_mask & BIT(pchg_cmd_version));
+}
+
+static int cros_pchg_port_count(const struct charger_data *charger)
+{
+	struct ec_response_pchg_count rsp;
+	int ret;
+
+	ret = cros_pchg_ec_command(charger, 0, EC_CMD_PCHG_COUNT,
+				   NULL, 0, &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_warn(charger->dev,
+			 "Unable to get number or ports (err:%d)\n", ret);
+		return ret;
+	}
+
+	return rsp.port_count;
+}
+
+static int cros_pchg_get_status(struct port_data *port)
+{
+	struct charger_data *charger = port->charger;
+	struct ec_params_pchg req;
+	struct ec_response_pchg rsp;
+	struct device *dev = charger->dev;
+	int old_status = port->psy_status;
+	int old_percentage = port->battery_percentage;
+	int ret;
+
+	req.port = port->port_number;
+	ret = cros_pchg_ec_command(charger, pchg_cmd_version, EC_CMD_PCHG,
+				   &req, sizeof(req), &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_err(dev, "Unable to get port.%d status (err:%d)\n",
+			port->port_number, ret);
+		return ret;
+	}
+
+	switch (rsp.state) {
+	case PCHG_STATE_RESET:
+	case PCHG_STATE_INITIALIZED:
+	case PCHG_STATE_ENABLED:
+	default:
+		port->psy_status = POWER_SUPPLY_STATUS_UNKNOWN;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	case PCHG_STATE_DETECTED:
+		port->psy_status = POWER_SUPPLY_STATUS_CHARGING;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		break;
+	case PCHG_STATE_CHARGING:
+		port->psy_status = POWER_SUPPLY_STATUS_CHARGING;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
+		break;
+	case PCHG_STATE_FULL:
+		port->psy_status = POWER_SUPPLY_STATUS_FULL;
+		port->charge_type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	}
+
+	port->battery_percentage = rsp.battery_percentage;
+
+	if (port->psy_status != old_status ||
+			port->battery_percentage != old_percentage)
+		power_supply_changed(port->psy);
+
+	dev_dbg(dev,
+		"Port %d: state=%d battery=%d%%\n",
+		port->port_number, rsp.state, rsp.battery_percentage);
+
+	return 0;
+}
+
+static int cros_pchg_get_port_status(struct port_data *port, bool ratelimit)
+{
+	int ret;
+
+	if (ratelimit &&
+	    time_is_after_jiffies(port->last_update + PCHG_CACHE_UPDATE_DELAY))
+		return 0;
+
+	ret = cros_pchg_get_status(port);
+	if (ret < 0)
+		return ret;
+
+	port->last_update = jiffies;
+
+	return ret;
+}
+
+static int cros_pchg_get_prop(struct power_supply *psy,
+			      enum power_supply_property psp,
+			      union power_supply_propval *val)
+{
+	struct port_data *port = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+	case POWER_SUPPLY_PROP_CAPACITY:
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		cros_pchg_get_port_status(port, true);
+		break;
+	default:
+		break;
+	}
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = port->psy_status;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = port->battery_percentage;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		val->intval = port->charge_type;
+		break;
+	case POWER_SUPPLY_PROP_SCOPE:
+		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int cros_pchg_event(const struct charger_data *charger,
+			   unsigned long host_event)
+{
+	int i;
+
+	for (i = 0; i < charger->num_registered_psy; i++)
+		cros_pchg_get_port_status(charger->ports[i], false);
+
+	return NOTIFY_OK;
+}
+
+static u32 cros_get_device_event(const struct charger_data *charger)
+{
+	struct ec_params_device_event req;
+	struct ec_response_device_event rsp;
+	struct device *dev = charger->dev;
+	int ret;
+
+	req.param = EC_DEVICE_EVENT_PARAM_GET_CURRENT_EVENTS;
+	ret = cros_pchg_ec_command(charger, 0, EC_CMD_DEVICE_EVENT,
+				   &req, sizeof(req), &rsp, sizeof(rsp));
+	if (ret < 0) {
+		dev_warn(dev, "Unable to get device events (err:%d)\n", ret);
+		return 0;
+	}
+
+	return rsp.event_mask;
+}
+
+static int cros_ec_notify(struct notifier_block *nb,
+			  unsigned long queued_during_suspend,
+			  void *data)
+{
+	struct cros_ec_device *ec_dev = (struct cros_ec_device *)data;
+	u32 host_event = cros_ec_get_host_event(ec_dev);
+	struct charger_data *charger =
+			container_of(nb, struct charger_data, notifier);
+	u32 device_event_mask;
+
+	if (!host_event)
+		return NOTIFY_DONE;
+
+	if (!(host_event & EC_HOST_EVENT_MASK(EC_HOST_EVENT_DEVICE)))
+		return NOTIFY_DONE;
+
+	/*
+	 * todo: Retrieve device event mask in common place
+	 * (e.g. cros_ec_proto.c).
+	 */
+	device_event_mask = cros_get_device_event(charger);
+	if (!(device_event_mask & EC_DEVICE_EVENT_MASK(EC_DEVICE_EVENT_WLC)))
+		return NOTIFY_DONE;
+
+	return cros_pchg_event(charger, host_event);
+}
+
+static int cros_pchg_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct cros_ec_dev *ec_dev = dev_get_drvdata(dev->parent);
+	struct cros_ec_device *ec_device = ec_dev->ec_dev;
+	struct power_supply_desc *psy_desc;
+	struct charger_data *charger;
+	struct power_supply *psy;
+	struct port_data *port;
+	struct notifier_block *nb;
+	int num_ports;
+	int ret;
+	int i;
+
+	charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL);
+	if (!charger)
+		return -ENOMEM;
+
+	charger->dev = dev;
+	charger->ec_dev = ec_dev;
+	charger->ec_device = ec_device;
+
+	ret = cros_pchg_port_count(charger);
+	if (ret <= 0) {
+		/*
+		 * This feature is enabled by the EC and the kernel driver is
+		 * included by default for CrOS devices. Don't need to be loud
+		 * since this error can be normal.
+		 */
+		dev_info(dev, "No peripheral charge ports (err:%d)\n", ret);
+		return -ENODEV;
+	}
+
+	if (!cros_pchg_cmd_ver_check(charger)) {
+		dev_err(dev, "EC_CMD_PCHG version %d isn't available.\n",
+			pchg_cmd_version);
+		return -EOPNOTSUPP;
+	}
+
+	num_ports = ret;
+	if (num_ports > EC_PCHG_MAX_PORTS) {
+		dev_err(dev, "Too many peripheral charge ports (%d)\n",
+			num_ports);
+		return -ENOBUFS;
+	}
+
+	dev_info(dev, "%d peripheral charge ports found\n", num_ports);
+
+	for (i = 0; i < num_ports; i++) {
+		struct power_supply_config psy_cfg = {};
+
+		port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
+		if (!port)
+			return -ENOMEM;
+
+		port->charger = charger;
+		port->port_number = i;
+		snprintf(port->name, sizeof(port->name), PCHG_DIR_NAME, i);
+
+		psy_desc = &port->psy_desc;
+		psy_desc->name = port->name;
+		psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
+		psy_desc->get_property = cros_pchg_get_prop;
+		psy_desc->external_power_changed = NULL;
+		psy_desc->properties = cros_pchg_props;
+		psy_desc->num_properties = ARRAY_SIZE(cros_pchg_props);
+		psy_cfg.drv_data = port;
+
+		psy = devm_power_supply_register(dev, psy_desc, &psy_cfg);
+		if (IS_ERR(psy))
+			return dev_err_probe(dev, PTR_ERR(psy),
+					"Failed to register power supply\n");
+		port->psy = psy;
+
+		charger->ports[charger->num_registered_psy++] = port;
+	}
+
+	if (!charger->num_registered_psy)
+		return -ENODEV;
+
+	nb = &charger->notifier;
+	nb->notifier_call = cros_ec_notify;
+	ret = blocking_notifier_chain_register(&ec_dev->ec_dev->event_notifier,
+					       nb);
+	if (ret < 0)
+		dev_err(dev, "Failed to register notifier (err:%d)\n", ret);
+
+	return 0;
+}
+
+static struct platform_driver cros_pchg_driver = {
+	.driver = {
+		.name = DRV_NAME,
+	},
+	.probe = cros_pchg_probe
+};
+
+module_platform_driver(cros_pchg_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("ChromeOS EC peripheral device charger");
+MODULE_ALIAS("platform:" DRV_NAME);

drivers/power/supply/cw2015_battery.c

···
 						    &cw2015_bat_desc,
 						    &psy_cfg);
 	if (IS_ERR(cw_bat->rk_bat)) {
-		dev_err(cw_bat->dev, "Failed to register power supply\n");
+		/* try again if this happens */
+		dev_err_probe(&client->dev, PTR_ERR(cw_bat->rk_bat),
+			"Failed to register power supply\n");
 		return PTR_ERR(cw_bat->rk_bat);
 	}
 

drivers/power/supply/max17042_battery.c

···
 
 /* Interrupt mask bits */
 #define CONFIG_ALRT_BIT_ENBL	(1 << 2)
-#define STATUS_INTR_SOCMIN_BIT	(1 << 10)
-#define STATUS_INTR_SOCMAX_BIT	(1 << 14)
 
 #define VFSOC0_LOCK		0x0000
 #define VFSOC0_UNLOCK		0x0080
···
 	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
 		if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
 			ret = regmap_read(map, MAX17042_V_empty, &data);
-		else if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17055)
-			ret = regmap_read(map, MAX17055_V_empty, &data);
 		else
 			ret = regmap_read(map, MAX17047_V_empty, &data);
 		if (ret < 0)
···
 	struct max17042_config_data *config = chip->pdata->config_data;
 
 	max17042_override_por(map, MAX17042_TGAIN, config->tgain);
-	max17042_override_por(map, MAx17042_TOFF, config->toff);
+	max17042_override_por(map, MAX17042_TOFF, config->toff);
 	max17042_override_por(map, MAX17042_CGAIN, config->cgain);
 	max17042_override_por(map, MAX17042_COFF, config->coff);
 
···
 	max17042_override_por(map, MAX17042_FilterCFG, config->filter_cfg);
 	max17042_override_por(map, MAX17042_RelaxCFG, config->relax_cfg);
 	max17042_override_por(map, MAX17042_MiscCFG, config->misc_cfg);
-	max17042_override_por(map, MAX17042_MaskSOC, config->masksoc);
 
 	max17042_override_por(map, MAX17042_FullCAP, config->fullcap);
 	max17042_override_por(map, MAX17042_FullCAPNom, config->fullcapnom);
-	if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
-		max17042_override_por(map, MAX17042_SOC_empty,
-						config->socempty);
-	max17042_override_por(map, MAX17042_LAvg_empty, config->lavg_empty);
 	max17042_override_por(map, MAX17042_dQacc, config->dqacc);
 	max17042_override_por(map, MAX17042_dPacc, config->dpacc);
 
-	if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042)
-		max17042_override_por(map, MAX17042_V_empty, config->vempty);
-	if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17055)
-		max17042_override_por(map, MAX17055_V_empty, config->vempty);
-	else
-		max17042_override_por(map, MAX17047_V_empty, config->vempty);
-	max17042_override_por(map, MAX17042_TempNom, config->temp_nom);
-	max17042_override_por(map, MAX17042_TempLim, config->temp_lim);
-	max17042_override_por(map, MAX17042_FCTC, config->fctc);
 	max17042_override_por(map, MAX17042_RCOMP0, config->rcomp0);
 	max17042_override_por(map, MAX17042_TempCo, config->tcompc0);
-	if (chip->chip_type &&
-	    ((chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042) ||
+
+	if (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042) {
+		max17042_override_por(map, MAX17042_MaskSOC, config->masksoc);
+		max17042_override_por(map, MAX17042_SOC_empty, config->socempty);
+		max17042_override_por(map, MAX17042_V_empty, config->vempty);
+		max17042_override_por(map, MAX17042_EmptyTempCo, config->empty_tempco);
+		max17042_override_por(map, MAX17042_K_empty0, config->kempty0);
+	}
+
+	if ((chip->chip_type == MAXIM_DEVICE_TYPE_MAX17042) ||
 	    (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17047) ||
-	    (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17050))) {
-		max17042_override_por(map, MAX17042_EmptyTempCo,
-						config->empty_tempco);
-		max17042_override_por(map, MAX17042_K_empty0,
-						config->kempty0);
+	    (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17050)) {
+		max17042_override_por(map, MAX17042_LAvg_empty, config->lavg_empty);
+		max17042_override_por(map, MAX17042_TempNom, config->temp_nom);
+		max17042_override_por(map, MAX17042_TempLim, config->temp_lim);
+		max17042_override_por(map, MAX17042_FCTC, config->fctc);
+	}
+
+	if ((chip->chip_type == MAXIM_DEVICE_TYPE_MAX17047) ||
+	    (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17050) ||
+	    (chip->chip_type == MAXIM_DEVICE_TYPE_MAX17055)) {
+		max17042_override_por(map, MAX17047_V_empty, config->vempty);
 	}
 }
 
···
 {
 	struct max17042_chip *chip = dev;
 	u32 val;
+	int ret;
 
-	regmap_read(chip->regmap, MAX17042_STATUS, &val);
-	if ((val & STATUS_INTR_SOCMIN_BIT) ||
-		(val & STATUS_INTR_SOCMAX_BIT)) {
-		dev_info(&chip->client->dev, "SOC threshold INTR\n");
+	ret = regmap_read(chip->regmap, MAX17042_STATUS, &val);
+	if (ret)
+		return IRQ_HANDLED;
+
+	if ((val & STATUS_SMN_BIT) || (val & STATUS_SMX_BIT)) {
+		dev_dbg(&chip->client->dev, "SOC threshold INTR\n");
 		max17042_set_soc_threshold(chip, 1);
 	}
 
···
 	{ .compatible = "maxim,max17047" },
 	{ .compatible = "maxim,max17050" },
 	{ .compatible = "maxim,max17055" },
+	{ .compatible = "maxim,max77849-battery" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, max17042_dt_match);
···
 	{ "max17047", MAXIM_DEVICE_TYPE_MAX17047 },
 	{ "max17050", MAXIM_DEVICE_TYPE_MAX17050 },
 	{ "max17055", MAXIM_DEVICE_TYPE_MAX17055 },
+	{ "max77849-battery", MAXIM_DEVICE_TYPE_MAX17047 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, max17042_id);

drivers/power/supply/mt6360_charger.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#include <linux/devm-helpers.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/linear_range.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#define MT6360_PMU_CHG_CTRL1	0x311
+#define MT6360_PMU_CHG_CTRL2	0x312
+#define MT6360_PMU_CHG_CTRL3	0x313
+#define MT6360_PMU_CHG_CTRL4	0x314
+#define MT6360_PMU_CHG_CTRL5	0x315
+#define MT6360_PMU_CHG_CTRL6	0x316
+#define MT6360_PMU_CHG_CTRL7	0x317
+#define MT6360_PMU_CHG_CTRL8	0x318
+#define MT6360_PMU_CHG_CTRL9	0x319
+#define MT6360_PMU_CHG_CTRL10	0x31A
+#define MT6360_PMU_DEVICE_TYPE	0x322
+#define MT6360_PMU_USB_STATUS1	0x327
+#define MT6360_PMU_CHG_STAT	0x34A
+#define MT6360_PMU_CHG_CTRL19	0x361
+#define MT6360_PMU_FOD_STAT	0x3E7
+
+/* MT6360_PMU_CHG_CTRL1 */
+#define MT6360_FSLP_SHFT	(3)
+#define MT6360_FSLP_MASK	BIT(MT6360_FSLP_SHFT)
+#define MT6360_OPA_MODE_SHFT	(0)
+#define MT6360_OPA_MODE_MASK	BIT(MT6360_OPA_MODE_SHFT)
+/* MT6360_PMU_CHG_CTRL2 */
+#define MT6360_IINLMTSEL_SHFT	(2)
+#define MT6360_IINLMTSEL_MASK	GENMASK(3, 2)
+/* MT6360_PMU_CHG_CTRL3 */
+#define MT6360_IAICR_SHFT	(2)
+#define MT6360_IAICR_MASK	GENMASK(7, 2)
+#define MT6360_ILIM_EN_MASK	BIT(0)
+/* MT6360_PMU_CHG_CTRL4 */
+#define MT6360_VOREG_SHFT	(1)
+#define MT6360_VOREG_MASK	GENMASK(7, 1)
+/* MT6360_PMU_CHG_CTRL5 */
+#define MT6360_VOBST_MASK	GENMASK(7, 2)
+/* MT6360_PMU_CHG_CTRL6 */
+#define MT6360_VMIVR_SHFT      (1)
+#define MT6360_VMIVR_MASK      GENMASK(7, 1)
+/* MT6360_PMU_CHG_CTRL7 */
+#define MT6360_ICHG_SHFT	(2)
+#define MT6360_ICHG_MASK	GENMASK(7, 2)
+/* MT6360_PMU_CHG_CTRL8 */
+#define MT6360_IPREC_SHFT	(0)
+#define MT6360_IPREC_MASK	GENMASK(3, 0)
+/* MT6360_PMU_CHG_CTRL9 */
+#define MT6360_IEOC_SHFT	(4)
+#define MT6360_IEOC_MASK	GENMASK(7, 4)
+/* MT6360_PMU_CHG_CTRL10 */
+#define MT6360_OTG_OC_MASK	GENMASK(3, 0)
+/* MT6360_PMU_DEVICE_TYPE */
+#define MT6360_USBCHGEN_MASK	BIT(7)
+/* MT6360_PMU_USB_STATUS1 */
+#define MT6360_USB_STATUS_SHFT	(4)
+#define MT6360_USB_STATUS_MASK	GENMASK(6, 4)
+/* MT6360_PMU_CHG_STAT */
+#define MT6360_CHG_STAT_SHFT	(6)
+#define MT6360_CHG_STAT_MASK	GENMASK(7, 6)
+#define MT6360_VBAT_LVL_MASK	BIT(5)
+/* MT6360_PMU_CHG_CTRL19 */
+#define MT6360_VINOVP_SHFT	(5)
+#define MT6360_VINOVP_MASK	GENMASK(6, 5)
+/* MT6360_PMU_FOD_STAT */
+#define MT6360_CHRDET_EXT_MASK	BIT(4)
+
+/* uV */
+#define MT6360_VMIVR_MIN	3900000
+#define MT6360_VMIVR_MAX	13400000
+#define MT6360_VMIVR_STEP	100000
+/* uA */
+#define MT6360_ICHG_MIN		100000
+#define MT6360_ICHG_MAX		5000000
+#define MT6360_ICHG_STEP	100000
+/* uV */
+#define MT6360_VOREG_MIN	3900000
+#define MT6360_VOREG_MAX	4710000
+#define MT6360_VOREG_STEP	10000
+/* uA */
+#define MT6360_AICR_MIN		100000
+#define MT6360_AICR_MAX		3250000
+#define MT6360_AICR_STEP	50000
+/* uA */
+#define MT6360_IPREC_MIN	100000
+#define MT6360_IPREC_MAX	850000
+#define MT6360_IPREC_STEP	50000
+/* uA */
+#define MT6360_IEOC_MIN		100000
+#define MT6360_IEOC_MAX		850000
+#define MT6360_IEOC_STEP	50000
+
+enum {
+	MT6360_RANGE_VMIVR,
+	MT6360_RANGE_ICHG,
+	MT6360_RANGE_VOREG,
+	MT6360_RANGE_AICR,
+	MT6360_RANGE_IPREC,
+	MT6360_RANGE_IEOC,
+	MT6360_RANGE_MAX,
+};
+
+#define MT6360_LINEAR_RANGE(idx, _min, _min_sel, _max_sel, _step) \
+	[idx] = REGULATOR_LINEAR_RANGE(_min, _min_sel, _max_sel, _step)
+
+static const struct linear_range mt6360_chg_range[MT6360_RANGE_MAX] = {
+	MT6360_LINEAR_RANGE(MT6360_RANGE_VMIVR, 3900000, 0, 0x5F, 100000),
+	MT6360_LINEAR_RANGE(MT6360_RANGE_ICHG, 100000, 0, 0x31, 100000),
+	MT6360_LINEAR_RANGE(MT6360_RANGE_VOREG, 3900000, 0, 0x51, 10000),
+	MT6360_LINEAR_RANGE(MT6360_RANGE_AICR, 100000, 0, 0x3F, 50000),
+	MT6360_LINEAR_RANGE(MT6360_RANGE_IPREC, 100000, 0, 0x0F, 50000),
+	MT6360_LINEAR_RANGE(MT6360_RANGE_IEOC, 100000, 0, 0x0F, 50000),
+};
+
+struct mt6360_chg_info {
+	struct device *dev;
+	struct regmap *regmap;
+	struct power_supply_desc psy_desc;
+	struct power_supply *psy;
+	struct regulator_dev *otg_rdev;
+	struct mutex chgdet_lock;
+	u32 vinovp;
+	bool pwr_rdy;
+	bool bc12_en;
+	int psy_usb_type;
+	struct work_struct chrdet_work;
+};
+
+enum mt6360_iinlmtsel {
+	MT6360_IINLMTSEL_AICR_3250 = 0,
+	MT6360_IINLMTSEL_CHG_TYPE,
+	MT6360_IINLMTSEL_AICR,
+	MT6360_IINLMTSEL_LOWER_LEVEL,
+};
+
+enum mt6360_pmu_chg_type {
+	MT6360_CHG_TYPE_NOVBUS = 0,
+	MT6360_CHG_TYPE_UNDER_GOING,
+	MT6360_CHG_TYPE_SDP,
+	MT6360_CHG_TYPE_SDPNSTD,
+	MT6360_CHG_TYPE_DCP,
+	MT6360_CHG_TYPE_CDP,
+	MT6360_CHG_TYPE_DISABLE_BC12,
+	MT6360_CHG_TYPE_MAX,
+};
+
+static enum power_supply_usb_type mt6360_charger_usb_types[] = {
+	POWER_SUPPLY_USB_TYPE_UNKNOWN,
+	POWER_SUPPLY_USB_TYPE_SDP,
+	POWER_SUPPLY_USB_TYPE_DCP,
+	POWER_SUPPLY_USB_TYPE_CDP,
+};
+
+static int mt6360_get_chrdet_ext_stat(struct mt6360_chg_info *mci,
+					     bool *pwr_rdy)
+{
+	int ret;
+	unsigned int regval;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_FOD_STAT, &regval);
+	if (ret < 0)
+		return ret;
+	*pwr_rdy = (regval & MT6360_CHRDET_EXT_MASK) ? true : false;
+	return 0;
+}
+
+static int mt6360_charger_get_online(struct mt6360_chg_info *mci,
+				     union power_supply_propval *val)
+{
+	int ret;
+	bool pwr_rdy;
+
+	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
+	if (ret < 0)
+		return ret;
+	val->intval = pwr_rdy ? true : false;
+	return 0;
+}
+
+static int mt6360_charger_get_status(struct mt6360_chg_info *mci,
+				     union power_supply_propval *val)
+{
+	int status, ret;
+	unsigned int regval;
+	bool pwr_rdy;
+
+	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
+	if (ret < 0)
+		return ret;
+	if (!pwr_rdy) {
+		status = POWER_SUPPLY_STATUS_DISCHARGING;
+		goto out;
+	}
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_STAT, &regval);
+	if (ret < 0)
+		return ret;
+	regval &= MT6360_CHG_STAT_MASK;
+	regval >>= MT6360_CHG_STAT_SHFT;
+	switch (regval) {
+	case 0x0:
+		status = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		break;
+	case 0x1:
+		status = POWER_SUPPLY_STATUS_CHARGING;
+		break;
+	case 0x2:
+		status = POWER_SUPPLY_STATUS_FULL;
+		break;
+	default:
+		ret = -EIO;
+	}
+out:
+	if (!ret)
+		val->intval = status;
+	return ret;
+}
+
+static int mt6360_charger_get_charge_type(struct mt6360_chg_info *mci,
+					  union power_supply_propval *val)
+{
+	int type, ret;
+	unsigned int regval;
+	u8 chg_stat;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_STAT, &regval);
+	if (ret < 0)
+		return ret;
+
+	chg_stat = (regval & MT6360_CHG_STAT_MASK) >> MT6360_CHG_STAT_SHFT;
+	switch (chg_stat) {
+	case 0x01: /* Charge in Progress */
+		if (regval & MT6360_VBAT_LVL_MASK)
+			type = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		else
+			type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		break;
+	case 0x00: /* Not Charging */
+	case 0x02: /* Charge Done */
+	case 0x03: /* Charge Fault */
+	default:
+		type = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	}
+
+	val->intval = type;
+	return 0;
+}
+
+static int mt6360_charger_get_ichg(struct mt6360_chg_info *mci,
+				   union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL7, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_ICHG_MASK) >> MT6360_ICHG_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_ICHG], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_get_max_ichg(struct mt6360_chg_info *mci,
+				       union power_supply_propval *val)
+{
+	val->intval = MT6360_ICHG_MAX;
+	return 0;
+}
+
+static int mt6360_charger_get_cv(struct mt6360_chg_info *mci,
+				 union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL4, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_VOREG_MASK) >> MT6360_VOREG_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VOREG], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_get_max_cv(struct mt6360_chg_info *mci,
+				     union power_supply_propval *val)
+{
+	val->intval = MT6360_VOREG_MAX;
+	return 0;
+}
+
+static int mt6360_charger_get_aicr(struct mt6360_chg_info *mci,
+				   union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL3, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_IAICR_MASK) >> MT6360_IAICR_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_AICR], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_get_mivr(struct mt6360_chg_info *mci,
+				   union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL6, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_VMIVR_MASK) >> MT6360_VMIVR_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_VMIVR], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_get_iprechg(struct mt6360_chg_info *mci,
+				      union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL8, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_IPREC_MASK) >> MT6360_IPREC_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IPREC], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_get_ieoc(struct mt6360_chg_info *mci,
+				   union power_supply_propval *val)
+{
+	int ret;
+	u32 sel, value;
+
+	ret = regmap_read(mci->regmap, MT6360_PMU_CHG_CTRL9, &sel);
+	if (ret < 0)
+		return ret;
+	sel = (sel & MT6360_IEOC_MASK) >> MT6360_IEOC_SHFT;
+	ret = linear_range_get_value(&mt6360_chg_range[MT6360_RANGE_IEOC], sel, &value);
+	if (!ret)
+		val->intval = value;
+	return ret;
+}
+
+static int mt6360_charger_set_online(struct mt6360_chg_info *mci,
+				     const union power_supply_propval *val)
+{
+	u8 force_sleep = val->intval ? 0 : 1;
+
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL1,
+				  MT6360_FSLP_MASK,
+				  force_sleep << MT6360_FSLP_SHFT);
+}
+
+static int mt6360_charger_set_ichg(struct mt6360_chg_info *mci,
+				   const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_ICHG], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL7,
+				  MT6360_ICHG_MASK,
+				  sel << MT6360_ICHG_SHFT);
+}
+
+static int mt6360_charger_set_cv(struct mt6360_chg_info *mci,
+				 const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_VOREG], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL4,
+				  MT6360_VOREG_MASK,
+				  sel << MT6360_VOREG_SHFT);
+}
+
+static int mt6360_charger_set_aicr(struct mt6360_chg_info *mci,
+				   const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_AICR], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL3,
+				  MT6360_IAICR_MASK,
+				  sel << MT6360_IAICR_SHFT);
+}
+
+static int mt6360_charger_set_mivr(struct mt6360_chg_info *mci,
+				   const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_VMIVR], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL3,
+				  MT6360_VMIVR_MASK,
+				  sel << MT6360_VMIVR_SHFT);
+}
+
+static int mt6360_charger_set_iprechg(struct mt6360_chg_info *mci,
+				      const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_IPREC], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL8,
+				  MT6360_IPREC_MASK,
+				  sel << MT6360_IPREC_SHFT);
+}
+
+static int mt6360_charger_set_ieoc(struct mt6360_chg_info *mci,
+				   const union power_supply_propval *val)
+{
+	u32 sel;
+
+	linear_range_get_selector_within(&mt6360_chg_range[MT6360_RANGE_IEOC], val->intval, &sel);
+	return regmap_update_bits(mci->regmap,
+				  MT6360_PMU_CHG_CTRL9,
+				  MT6360_IEOC_MASK,
+				  sel << MT6360_IEOC_SHFT);
+}
+
+static int mt6360_charger_get_property(struct power_supply *psy,
+				       enum power_supply_property psp,
+				       union power_supply_propval *val)
+{
+	struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
+	int ret = 0;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		ret = mt6360_charger_get_online(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_STATUS:
+		ret = mt6360_charger_get_status(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		ret = mt6360_charger_get_charge_type(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+		ret = mt6360_charger_get_ichg(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
+		ret = mt6360_charger_get_max_ichg(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+		ret = mt6360_charger_get_cv(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
+		ret = mt6360_charger_get_max_cv(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		ret = mt6360_charger_get_aicr(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+		ret = mt6360_charger_get_mivr(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+		ret = mt6360_charger_get_iprechg(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		ret = mt6360_charger_get_ieoc(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		val->intval = mci->psy_usb_type;
+		break;
+	default:
+		ret = -ENODATA;
+	}
+	return ret;
+}
+
+static int mt6360_charger_set_property(struct power_supply *psy,
+				       enum power_supply_property psp,
+				       const union power_supply_propval *val)
+{
+	struct mt6360_chg_info *mci = power_supply_get_drvdata(psy);
+	int ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		ret = mt6360_charger_set_online(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+		ret = mt6360_charger_set_ichg(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+		ret = mt6360_charger_set_cv(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		ret = mt6360_charger_set_aicr(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+		ret = mt6360_charger_set_mivr(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+		ret = mt6360_charger_set_iprechg(mci, val);
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		ret = mt6360_charger_set_ieoc(mci, val);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	return ret;
+}
+
+static int mt6360_charger_property_is_writeable(struct power_supply *psy,
+					       enum power_supply_property psp)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
+	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
+	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
+	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+static enum power_supply_property mt6360_charger_properties[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
+	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
+	POWER_SUPPLY_PROP_USB_TYPE,
+};
+
+static const struct power_supply_desc mt6360_charger_desc = {
+	.type			= POWER_SUPPLY_TYPE_USB,
+	.properties		= mt6360_charger_properties,
+	.num_properties		= ARRAY_SIZE(mt6360_charger_properties),
+	.get_property		= mt6360_charger_get_property,
+	.set_property		= mt6360_charger_set_property,
+	.property_is_writeable	= mt6360_charger_property_is_writeable,
+	.usb_types		= mt6360_charger_usb_types,
+	.num_usb_types		= ARRAY_SIZE(mt6360_charger_usb_types),
+};
+
+static const struct regulator_ops mt6360_chg_otg_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
+static const struct regulator_desc mt6360_otg_rdesc = {
+	.of_match = "usb-otg-vbus",
+	.name = "usb-otg-vbus",
+	.ops = &mt6360_chg_otg_ops,
+	.owner = THIS_MODULE,
+	.type = REGULATOR_VOLTAGE,
+	.min_uV = 4425000,
+	.uV_step = 25000,
+	.n_voltages = 57,
+	.vsel_reg = MT6360_PMU_CHG_CTRL5,
+	.vsel_mask = MT6360_VOBST_MASK,
+	.enable_reg = MT6360_PMU_CHG_CTRL1,
+	.enable_mask = MT6360_OPA_MODE_MASK,
+};
+
+static irqreturn_t mt6360_pmu_attach_i_handler(int irq, void *data)
+{
+	struct mt6360_chg_info *mci = data;
+	int ret;
+	unsigned int usb_status;
+	int last_usb_type;
+
+	mutex_lock(&mci->chgdet_lock);
+	if (!mci->bc12_en) {
+		dev_warn(mci->dev, "Received attach interrupt, bc12 disabled, ignore irq\n");
+		goto out;
+	}
+	last_usb_type = mci->psy_usb_type;
+	/* Plug in */
+	ret = regmap_read(mci->regmap, MT6360_PMU_USB_STATUS1, &usb_status);
+	if (ret < 0)
+		goto out;
+	usb_status &= MT6360_USB_STATUS_MASK;
+	usb_status >>= MT6360_USB_STATUS_SHFT;
+	switch (usb_status) {
+	case MT6360_CHG_TYPE_NOVBUS:
+		dev_dbg(mci->dev, "Received attach interrupt, no vbus\n");
+		goto out;
+	case MT6360_CHG_TYPE_UNDER_GOING:
+		dev_dbg(mci->dev, "Received attach interrupt, under going...\n");
+		goto out;
+	case MT6360_CHG_TYPE_SDP:
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		break;
+	case MT6360_CHG_TYPE_SDPNSTD:
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		break;
+	case MT6360_CHG_TYPE_CDP:
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+		break;
+	case MT6360_CHG_TYPE_DCP:
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+		break;
+	case MT6360_CHG_TYPE_DISABLE_BC12:
+		dev_dbg(mci->dev, "Received attach interrupt, bc12 detect not enable\n");
+		goto out;
+	default:
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+		dev_dbg(mci->dev, "Received attach interrupt, reserved address\n");
+		goto out;
+	}
+
+	dev_dbg(mci->dev, "Received attach interrupt, chg_type = %d\n", mci->psy_usb_type);
+	if (last_usb_type != mci->psy_usb_type)
+		power_supply_changed(mci->psy);
+out:
+	mutex_unlock(&mci->chgdet_lock);
+	return IRQ_HANDLED;
+}
+
+static void mt6360_handle_chrdet_ext_evt(struct mt6360_chg_info *mci)
+{
+	int ret;
+	bool pwr_rdy;
+
+	mutex_lock(&mci->chgdet_lock);
+	ret = mt6360_get_chrdet_ext_stat(mci, &pwr_rdy);
+	if (ret < 0)
+		goto out;
+	if (mci->pwr_rdy == pwr_rdy) {
+		dev_dbg(mci->dev, "Received vbus interrupt, pwr_rdy is same(%d)\n", pwr_rdy);
+		goto out;
+	}
+	mci->pwr_rdy = pwr_rdy;
+	dev_dbg(mci->dev, "Received vbus interrupt, pwr_rdy = %d\n", pwr_rdy);
+	if (!pwr_rdy) {
+		mci->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+		power_supply_changed(mci->psy);
+
+	}
+	ret = regmap_update_bits(mci->regmap,
+				 MT6360_PMU_DEVICE_TYPE,
+				 MT6360_USBCHGEN_MASK,
+				 pwr_rdy ? MT6360_USBCHGEN_MASK : 0);
+	if (ret < 0)
+		goto out;
+	mci->bc12_en = pwr_rdy;
+out:
+	mutex_unlock(&mci->chgdet_lock);
+}
+
+static void mt6360_chrdet_work(struct work_struct *work)
+{
+	struct mt6360_chg_info *mci = (struct mt6360_chg_info *)container_of(
+				     work, struct mt6360_chg_info, chrdet_work);
+
+	mt6360_handle_chrdet_ext_evt(mci);
+}
+
+static irqreturn_t mt6360_pmu_chrdet_ext_evt_handler(int irq, void *data)
+{
+	struct mt6360_chg_info *mci = data;
+
+	mt6360_handle_chrdet_ext_evt(mci);
+	return IRQ_HANDLED;
+}
+
+static int mt6360_chg_irq_register(struct platform_device *pdev)
+{
+	const struct {
+		const char *name;
+		irq_handler_t handler;
+	} irq_descs[] = {
+		{ "attach_i", mt6360_pmu_attach_i_handler },
+		{ "chrdet_ext_evt", mt6360_pmu_chrdet_ext_evt_handler }
+	};
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(irq_descs); i++) {
+		ret = platform_get_irq_byname(pdev, irq_descs[i].name);
+		if (ret < 0)
+			return ret;
+
+		ret = devm_request_threaded_irq(&pdev->dev, ret, NULL,
+						irq_descs[i].handler,
+						IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+						irq_descs[i].name,
+						platform_get_drvdata(pdev));
+		if (ret < 0)
+			return dev_err_probe(&pdev->dev, ret, "Failed to request %s irq\n",
+					     irq_descs[i].name);
+	}
+
+	return 0;
+}
+
+static u32 mt6360_vinovp_trans_to_sel(u32 val)
+{
+	u32 vinovp_tbl[] = { 5500000, 6500000, 11000000, 14500000 };
+	int i;
+
+	/* Select the smaller and equal supported value */
+	for (i = 0; i < ARRAY_SIZE(vinovp_tbl)-1; i++) {
+		if (val < vinovp_tbl[i+1])
+			break;
+	}
+	return i;
+}
+
+static int mt6360_chg_init_setting(struct mt6360_chg_info *mci)
+{
+	int ret;
+	u32 sel;
+
+	sel = mt6360_vinovp_trans_to_sel(mci->vinovp);
+	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL19,
+				  MT6360_VINOVP_MASK, sel << MT6360_VINOVP_SHFT);
+	if (ret)
+		return dev_err_probe(mci->dev, ret, "%s: Failed to apply vinovp\n", __func__);
+	ret = regmap_update_bits(mci->regmap, MT6360_PMU_DEVICE_TYPE,
+				 MT6360_USBCHGEN_MASK, 0);
+	if (ret)
+		return dev_err_probe(mci->dev, ret, "%s: Failed to disable bc12\n", __func__);
+	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL2,
+				 MT6360_IINLMTSEL_MASK,
+				 MT6360_IINLMTSEL_AICR <<
+					MT6360_IINLMTSEL_SHFT);
+	if (ret)
+		return dev_err_probe(mci->dev, ret,
+				     "%s: Failed to switch iinlmtsel to aicr\n", __func__);
+	usleep_range(5000, 6000);
+	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL3,
+				 MT6360_ILIM_EN_MASK, 0);
+	if (ret)
+		return dev_err_probe(mci->dev, ret,
+				     "%s: Failed to disable ilim\n", __func__);
+	ret = regmap_update_bits(mci->regmap, MT6360_PMU_CHG_CTRL10,
+				 MT6360_OTG_OC_MASK, MT6360_OTG_OC_MASK);
+	if (ret)
+		return dev_err_probe(mci->dev, ret,
+				     "%s: Failed to config otg oc to 3A\n", __func__);
+	return 0;
+}
+
+static int mt6360_charger_probe(struct platform_device *pdev)
+{
+	struct mt6360_chg_info *mci;
+	struct power_supply_config charger_cfg = {};
+	struct regulator_config config = { };
+	int ret;
+
+	mci = devm_kzalloc(&pdev->dev, sizeof(*mci), GFP_KERNEL);
+	if (!mci)
+		return -ENOMEM;
+
+	mci->dev = &pdev->dev;
+	mci->vinovp = 6500000;
+	mutex_init(&mci->chgdet_lock);
+	platform_set_drvdata(pdev, mci);
+	devm_work_autocancel(&pdev->dev, &mci->chrdet_work, mt6360_chrdet_work);
+
+	ret = device_property_read_u32(&pdev->dev, "richtek,vinovp-microvolt", &mci->vinovp);
+	if (ret)
+		dev_warn(&pdev->dev, "Failed to parse vinovp in DT, keep default 6.5v\n");
+
+	mci->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!mci->regmap)
+		return dev_err_probe(&pdev->dev, -ENODEV, "Failed to get parent regmap\n");
+
+	ret = mt6360_chg_init_setting(mci);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Failed to initial setting\n");
+
+	memcpy(&mci->psy_desc, &mt6360_charger_desc, sizeof(mci->psy_desc));
+	mci->psy_desc.name = dev_name(&pdev->dev);
+	charger_cfg.drv_data = mci;
+	charger_cfg.of_node = pdev->dev.of_node;
+	mci->psy = devm_power_supply_register(&pdev->dev,
+					      &mci->psy_desc, &charger_cfg);
+	if (IS_ERR(mci->psy))
+		return dev_err_probe(&pdev->dev, PTR_ERR(mci->psy),
+				     "Failed to register power supply dev\n");
+
+
+	ret = mt6360_chg_irq_register(pdev);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Failed to register irqs\n");
+
+	config.dev = &pdev->dev;
+	config.regmap = mci->regmap;
+	mci->otg_rdev = devm_regulator_register(&pdev->dev, &mt6360_otg_rdesc,
+						&config);
+	if (IS_ERR(mci->otg_rdev))
+		return PTR_ERR(mci->otg_rdev);
+
+	schedule_work(&mci->chrdet_work);
+
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused mt6360_charger_of_id[] = {
+	{ .compatible = "mediatek,mt6360-chg", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, mt6360_charger_of_id);
+
+static const struct platform_device_id mt6360_charger_id[] = {
+	{ "mt6360-chg", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(platform, mt6360_charger_id);
+
+static struct platform_driver mt6360_charger_driver = {
+	.driver = {
+		.name = "mt6360-chg",
+		.of_match_table = of_match_ptr(mt6360_charger_of_id),
+	},
+	.probe = mt6360_charger_probe,
+	.id_table = mt6360_charger_id,
+};
+module_platform_driver(mt6360_charger_driver);
+
+MODULE_AUTHOR("Gene Chen <[e-mail]>");
+MODULE_DESCRIPTION("MT6360 Charger Driver");
+MODULE_LICENSE("GPL");

drivers/power/supply/power_supply_core.c

···
 	int err, len, index;
 	const __be32 *list;
 
+	info->technology                     = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
 	info->energy_full_design_uwh         = -EINVAL;
 	info->charge_full_design_uah         = -EINVAL;
 	info->voltage_min_design_uv          = -EINVAL;
···
 	 * in enum power_supply_property. For reasoning, see
 	 * Documentation/power/power_supply_class.rst.
 	 */
+
+	if (!of_property_read_string(battery_np, "device-chemistry", &value)) {
+		if (!strcmp("nickel-cadmium", value))
+			info->technology = POWER_SUPPLY_TECHNOLOGY_NiCd;
+		else if (!strcmp("nickel-metal-hydride", value))
+			info->technology = POWER_SUPPLY_TECHNOLOGY_NiMH;
+		else if (!strcmp("lithium-ion", value))
+			/* Imprecise lithium-ion type */
+			info->technology = POWER_SUPPLY_TECHNOLOGY_LION;
+		else if (!strcmp("lithium-ion-polymer", value))
+			info->technology = POWER_SUPPLY_TECHNOLOGY_LIPO;
+		else if (!strcmp("lithium-ion-iron-phosphate", value))
+			info->technology = POWER_SUPPLY_TECHNOLOGY_LiFe;
+		else if (!strcmp("lithium-ion-manganese-oxide", value))
+			info->technology = POWER_SUPPLY_TECHNOLOGY_LiMn;
+		else
+			dev_warn(&psy->dev, "%s unknown battery type\n", value);
+	}
 
 	of_property_read_u32(battery_np, "energy-full-design-microwatt-hours",
 			     &info->energy_full_design_uwh);

drivers/power/supply/qcom_smbb.c

···
 		int irq;
 
 		irq = platform_get_irq_byname(pdev, smbb_charger_irqs[i].name);
-		if (irq < 0) {
-			dev_err(&pdev->dev, "failed to get irq '%s'\n",
-				smbb_charger_irqs[i].name);
+		if (irq < 0)
 			return irq;
-		}
 
 		smbb_charger_irqs[i].handler(irq, chg);
 

drivers/power/supply/rn5t618_power.c

···
 #include <linux/device.h>
 #include <linux/bitops.h>
 #include <linux/errno.h>
+#include <linux/iio/consumer.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/mfd/rn5t618.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
 #include <linux/regmap.h>
···
 	struct power_supply *battery;
 	struct power_supply *usb;
 	struct power_supply *adp;
+	struct iio_channel *channel_vusb;
+	struct iio_channel *channel_vadp;
 	int irq;
 };
 
···
 static enum power_supply_property rn5t618_usb_props[] = {
 	/* input current limit is not very accurate */
 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_USB_TYPE,
 	POWER_SUPPLY_PROP_ONLINE,
···
 static enum power_supply_property rn5t618_adp_props[] = {
 	/* input current limit is not very accurate */
 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_ONLINE,
 };
···
 
 		val->intval = FROM_CUR_REG(regval);
 		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		if (!info->channel_vadp)
+			return -ENODATA;
+
+		ret = iio_read_channel_processed_scale(info->channel_vadp, &val->intval, 1000);
+		if (ret < 0)
+			return ret;
+
+		break;
 	default:
 		return -EINVAL;
 	}
···
 			val->intval = FROM_CUR_REG(regval);
 		}
 		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		if (!info->channel_vusb)
+			return -ENODATA;
+
+		ret = iio_read_channel_processed_scale(info->channel_vusb, &val->intval, 1000);
+		if (ret < 0)
+			return ret;
+
+		break;
 	default:
 		return -EINVAL;
 	}
···
 	info->irq = -1;
 
 	platform_set_drvdata(pdev, info);
+
+	info->channel_vusb = devm_iio_channel_get(&pdev->dev, "vusb");
+	if (IS_ERR(info->channel_vusb)) {
+		if (PTR_ERR(info->channel_vusb) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(info->channel_vusb);
+	}
+
+	info->channel_vadp = devm_iio_channel_get(&pdev->dev, "vadp");
+	if (IS_ERR(info->channel_vadp)) {
+		if (PTR_ERR(info->channel_vadp) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(info->channel_vadp);
+	}
 
 	ret = regmap_read(info->rn5t618->regmap, RN5T618_CONTROL, &v);
 	if (ret)

drivers/power/supply/sbs-battery.c

···
 	REG_CURRENT_AVG,
 	REG_MAX_ERR,
 	REG_CAPACITY,
-	REG_TIME_TO_EMPTY,
-	REG_TIME_TO_FULL,
+	REG_TIME_TO_EMPTY_NOW,
+	REG_TIME_TO_EMPTY_AVG,
+	REG_TIME_TO_FULL_AVG,
 	REG_STATUS,
 	REG_CAPACITY_LEVEL,
 	REG_CYCLE_COUNT,
···
 	[REG_TEMPERATURE] =
 		SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
 	[REG_VOLTAGE] =
-		SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
+		SBS_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 65535),
 	[REG_CURRENT_NOW] =
 		SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
 	[REG_CURRENT_AVG] =
···
 		SBS_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
 	[REG_FULL_CHARGE_CAPACITY_CHARGE] =
 		SBS_DATA(POWER_SUPPLY_PROP_CHARGE_FULL, 0x10, 0, 65535),
-	[REG_TIME_TO_EMPTY] =
+	[REG_TIME_TO_EMPTY_NOW] =
+		SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW, 0x11, 0, 65535),
+	[REG_TIME_TO_EMPTY_AVG] =
 		SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0, 65535),
-	[REG_TIME_TO_FULL] =
+	[REG_TIME_TO_FULL_AVG] =
 		SBS_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0, 65535),
 	[REG_CHARGE_CURRENT] =
 		SBS_DATA(POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, 0x14, 0, 65535),
···
 	POWER_SUPPLY_PROP_CAPACITY,
 	POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN,
 	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
 	POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
 	POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
 	POWER_SUPPLY_PROP_SERIAL_NUMBER,
···
 		val->intval -= TEMP_KELVIN_TO_CELSIUS;
 		break;
 
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
 	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
 	case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
 		/* sbs provides time to empty and time to full in minutes.
···
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 	case POWER_SUPPLY_PROP_CURRENT_AVG:
 	case POWER_SUPPLY_PROP_TEMP:
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
 	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
 	case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
 	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:

drivers/power/supply/sc27xx_fuel_gauge.c

···
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(dev, "no irq resource specified\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	ret = devm_request_threaded_irq(data->dev, irq, NULL,
 					sc27xx_fgu_interrupt,

drivers/power/supply/smb347-charger.c

···
 #include <linux/power_supply.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/regulator/driver.h>
 
 #include <dt-bindings/power/summit,smb347-charger.h>
 
···
 #define CFG_PIN_EN_CTRL_ACTIVE_LOW		0x60
 #define CFG_PIN_EN_APSD_IRQ			BIT(1)
 #define CFG_PIN_EN_CHARGER_ERROR		BIT(2)
+#define CFG_PIN_EN_CTRL				BIT(4)
 #define CFG_THERM				0x07
 #define CFG_THERM_SOFT_HOT_COMPENSATION_MASK	0x03
 #define CFG_THERM_SOFT_HOT_COMPENSATION_SHIFT	0
···
 #define CFG_THERM_SOFT_COLD_COMPENSATION_SHIFT	2
 #define CFG_THERM_MONITOR_DISABLED		BIT(4)
 #define CFG_SYSOK				0x08
+#define CFG_SYSOK_INOK_ACTIVE_HIGH		BIT(0)
 #define CFG_SYSOK_SUSPEND_HARD_LIMIT_DISABLED	BIT(2)
 #define CFG_OTHER				0x09
 #define CFG_OTHER_RID_MASK			0xc0
 #define CFG_OTHER_RID_ENABLED_AUTO_OTG		0xc0
 #define CFG_OTG					0x0a
 #define CFG_OTG_TEMP_THRESHOLD_MASK		0x30
+#define CFG_OTG_CURRENT_LIMIT_250mA		BIT(2)
+#define CFG_OTG_CURRENT_LIMIT_750mA		BIT(3)
 #define CFG_OTG_TEMP_THRESHOLD_SHIFT		4
 #define CFG_OTG_CC_COMPENSATION_MASK		0xc0
 #define CFG_OTG_CC_COMPENSATION_SHIFT		6
···
 #define CMD_A					0x30
 #define CMD_A_CHG_ENABLED			BIT(1)
 #define CMD_A_SUSPEND_ENABLED			BIT(2)
+#define CMD_A_OTG_ENABLED			BIT(4)
 #define CMD_A_ALLOW_WRITE			BIT(7)
 #define CMD_B					0x31
 #define CMD_C					0x33
···
  * @regmap: pointer to driver regmap
  * @mains: power_supply instance for AC/DC power
  * @usb: power_supply instance for USB power
+ * @usb_rdev: USB VBUS regulator device
  * @id: SMB charger ID
  * @mains_online: is AC/DC input connected
  * @usb_online: is USB input connected
- * @charging_enabled: is charging enabled
  * @irq_unsupported: is interrupt unsupported by SMB hardware
+ * @usb_vbus_enabled: is USB VBUS powered by SMB charger
  * @max_charge_current: maximum current (in uA) the battery can be charged
  * @max_charge_voltage: maximum voltage (in uV) the battery can be charged
  * @pre_charge_current: current (in uA) to use in pre-charging phase
···
  * @use_usb_otg: USB OTG output can be used (not implemented yet)
  * @enable_control: how charging enable/disable is controlled
  *		    (driver/pin controls)
+ * @inok_polarity: polarity of INOK signal which denotes presence of external
+ *		   power supply
  *
  * @use_main, @use_usb, and @use_usb_otg are means to enable/disable
  * hardware support for these. This is useful when we want to have for
···
 	struct regmap		*regmap;
 	struct power_supply	*mains;
 	struct power_supply	*usb;
+	struct regulator_dev	*usb_rdev;
 	unsigned int		id;
 	bool			mains_online;
 	bool			usb_online;
-	bool			charging_enabled;
 	bool			irq_unsupported;
+	bool			usb_vbus_enabled;
 
 	unsigned int		max_charge_current;
 	unsigned int		max_charge_voltage;
···
 	bool			use_usb;
 	bool			use_usb_otg;
 	unsigned int		enable_control;
+	unsigned int		inok_polarity;
 };
 
 enum smb_charger_chipid {
···
 
 static int smb347_charging_set(struct smb347_charger *smb, bool enable)
 {
-	int ret = 0;
-
 	if (smb->enable_control != SMB3XX_CHG_ENABLE_SW) {
 		dev_dbg(smb->dev, "charging enable/disable in SW disabled\n");
 		return 0;
 	}
 
-	if (smb->charging_enabled != enable) {
-		ret = regmap_update_bits(smb->regmap, CMD_A, CMD_A_CHG_ENABLED,
-					 enable ? CMD_A_CHG_ENABLED : 0);
-		if (!ret)
-			smb->charging_enabled = enable;
+	if (enable && smb->usb_vbus_enabled) {
+		dev_dbg(smb->dev, "charging not enabled because USB is in host mode\n");
+		return 0;
 	}
 
-	return ret;
+	return regmap_update_bits(smb->regmap, CMD_A, CMD_A_CHG_ENABLED,
+				  enable ? CMD_A_CHG_ENABLED : 0);
 }
 
 static inline int smb347_charging_enable(struct smb347_charger *smb)
···
  *
  * Returns %0 on success and negative errno in case of failure.
  */
-static int smb347_set_writable(struct smb347_charger *smb, bool writable)
+static int smb347_set_writable(struct smb347_charger *smb, bool writable,
+			       bool irq_toggle)
 {
-	return regmap_update_bits(smb->regmap, CMD_A, CMD_A_ALLOW_WRITE,
-				  writable ? CMD_A_ALLOW_WRITE : 0);
+	struct i2c_client *client = to_i2c_client(smb->dev);
+	int ret;
+
+	if (writable && irq_toggle && !smb->irq_unsupported)
+		disable_irq(client->irq);
+
+	ret = regmap_update_bits(smb->regmap, CMD_A, CMD_A_ALLOW_WRITE,
+				 writable ? CMD_A_ALLOW_WRITE : 0);
+
+	if ((!writable || ret) && irq_toggle && !smb->irq_unsupported)
+		enable_irq(client->irq);
+
+	return ret;
 }
 
 static int smb347_hw_init(struct smb347_charger *smb)
···
 	unsigned int val;
 	int ret;
 
-	ret = smb347_set_writable(smb, true);
+	ret = smb347_set_writable(smb, true, false);
 	if (ret < 0)
 		return ret;
 
···
 	if (ret < 0)
 		goto fail;
 
+	/* Activate pin control, making it writable. */
+	switch (smb->enable_control) {
+	case SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW:
+	case SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH:
+		ret = regmap_set_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_CTRL);
+		if (ret < 0)
+			goto fail;
+	}
+
 	/*
 	 * Make the charging functionality controllable by a write to the
 	 * command register unless pin control is specified in the platform
···
 	ret = smb347_start_stop_charging(smb);
 
 fail:
-	smb347_set_writable(smb, false);
+	smb347_set_writable(smb, false, false);
 	return ret;
 }
 
···
 	if (smb->irq_unsupported)
 		return 0;
 
-	ret = smb347_set_writable(smb, true);
+	ret = smb347_set_writable(smb, true, true);
 	if (ret < 0)
 		return ret;
 
···
 	ret = regmap_update_bits(smb->regmap, CFG_PIN, CFG_PIN_EN_CHARGER_ERROR,
 				 enable ? CFG_PIN_EN_CHARGER_ERROR : 0);
 fail:
-	smb347_set_writable(smb, false);
+	smb347_set_writable(smb, false, true);
 	return ret;
 }
 
···
 	if (!client->irq)
 		return 0;
 
-	ret = smb347_set_writable(smb, true);
+	ret = smb347_set_writable(smb, true, false);
 	if (ret < 0)
 		return ret;
 
···
 				 CFG_STAT_ACTIVE_HIGH | CFG_STAT_DISABLED,
 				 CFG_STAT_DISABLED);
 
-	smb347_set_writable(smb, false);
+	smb347_set_writable(smb, false, false);
 
 	if (ret < 0) {
 		dev_warn(smb->dev, "failed to initialize IRQ: %d\n", ret);
···
 	/* Select charging control */
 	device_property_read_u32(dev, "summit,enable-charge-control",
 				 &smb->enable_control);
+
+	/*
+	 * Polarity of INOK signal indicating presence of external power
+	 * supply connected to the charger.
+	 */
+	device_property_read_u32(dev, "summit,inok-polarity",
+				 &smb->inok_polarity);
 }
 
 static int smb347_get_battery_info(struct smb347_charger *smb)
···
 	return 0;
 }
 
+static int smb347_usb_vbus_get_current_limit(struct regulator_dev *rdev)
+{
+	struct smb347_charger *smb = rdev_get_drvdata(rdev);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(smb->regmap, CFG_OTG, &val);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * It's unknown what happens if this bit is unset due to lack of
+	 * access to the datasheet, assume it's limit-enable.
+	 */
+	if (!(val & CFG_OTG_CURRENT_LIMIT_250mA))
+		return 0;
+
+	return val & CFG_OTG_CURRENT_LIMIT_750mA ? 750000 : 250000;
+}
+
+static int smb347_usb_vbus_set_new_current_limit(struct smb347_charger *smb,
+						 int max_uA)
+{
+	const unsigned int mask = CFG_OTG_CURRENT_LIMIT_750mA |
+				  CFG_OTG_CURRENT_LIMIT_250mA;
+	unsigned int val = CFG_OTG_CURRENT_LIMIT_250mA;
+	int ret;
+
+	if (max_uA >= 750000)
+		val |= CFG_OTG_CURRENT_LIMIT_750mA;
+
+	ret = regmap_update_bits(smb->regmap, CFG_OTG, mask, val);
+	if (ret < 0)
+		dev_err(smb->dev, "failed to change USB current limit\n");
+
+	return ret;
+}
+
+static int smb347_usb_vbus_set_current_limit(struct regulator_dev *rdev,
+					     int min_uA, int max_uA)
+{
+	struct smb347_charger *smb = rdev_get_drvdata(rdev);
+	int ret;
+
+	ret = smb347_set_writable(smb, true, true);
+	if (ret < 0)
+		return ret;
+
+	ret = smb347_usb_vbus_set_new_current_limit(smb, max_uA);
+	smb347_set_writable(smb, false, true);
+
+	return ret;
+}
+
+static int smb347_usb_vbus_regulator_enable(struct regulator_dev *rdev)
+{
+	struct smb347_charger *smb = rdev_get_drvdata(rdev);
+	int ret, max_uA;
+
+	ret = smb347_set_writable(smb, true, true);
+	if (ret < 0)
+		return ret;
+
+	smb347_charging_disable(smb);
+
+	if (device_property_read_bool(&rdev->dev, "summit,needs-inok-toggle")) {
+		unsigned int sysok = 0;
+
+		if (smb->inok_polarity == SMB3XX_SYSOK_INOK_ACTIVE_LOW)
+			sysok = CFG_SYSOK_INOK_ACTIVE_HIGH;
+
+		/*
+		 * VBUS won't be powered if INOK is active, so we need to
+		 * manually disable INOK on some platforms.
+		 */
+		ret = regmap_update_bits(smb->regmap, CFG_SYSOK,
+					 CFG_SYSOK_INOK_ACTIVE_HIGH, sysok);
+		if (ret < 0) {
+			dev_err(smb->dev, "failed to disable INOK\n");
+			goto done;
+		}
+	}
+
+	ret = smb347_usb_vbus_get_current_limit(rdev);
+	if (ret < 0) {
+		dev_err(smb->dev, "failed to get USB VBUS current limit\n");
+		goto done;
+	}
+
+	max_uA = ret;
+
+	ret = smb347_usb_vbus_set_new_current_limit(smb, 250000);
+	if (ret < 0) {
+		dev_err(smb->dev, "failed to preset USB VBUS current limit\n");
+		goto done;
+	}
+
+	ret = regmap_set_bits(smb->regmap, CMD_A, CMD_A_OTG_ENABLED);
+	if (ret < 0) {
+		dev_err(smb->dev, "failed to enable USB VBUS\n");
+		goto done;
+	}
+
+	smb->usb_vbus_enabled = true;
+
+	ret = smb347_usb_vbus_set_new_current_limit(smb, max_uA);
+	if (ret < 0) {
+		dev_err(smb->dev, "failed to restore USB VBUS current limit\n");
+		goto done;
+	}
+done:
+	smb347_set_writable(smb, false, true);
+
+	return ret;
+}
+
+static int smb347_usb_vbus_regulator_disable(struct regulator_dev *rdev)
+{
+	struct smb347_charger *smb = rdev_get_drvdata(rdev);
+	int ret;
+
+	ret = smb347_set_writable(smb, true, true);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_clear_bits(smb->regmap, CMD_A, CMD_A_OTG_ENABLED);
+	if (ret < 0) {
+		dev_err(smb->dev, "failed to disable USB VBUS\n");
+		goto done;
+	}
+
+	smb->usb_vbus_enabled = false;
+
+	if (device_property_read_bool(&rdev->dev, "summit,needs-inok-toggle")) {
+		unsigned int sysok = 0;
+
+		if (smb->inok_polarity == SMB3XX_SYSOK_INOK_ACTIVE_HIGH)
+			sysok = CFG_SYSOK_INOK_ACTIVE_HIGH;
+
+		ret = regmap_update_bits(smb->regmap, CFG_SYSOK,
+					 CFG_SYSOK_INOK_ACTIVE_HIGH, sysok);
+		if (ret < 0) {
+			dev_err(smb->dev, "failed to enable INOK\n");
+			goto done;
+		}
+	}
+
+	smb347_start_stop_charging(smb);
+done:
+	smb347_set_writable(smb, false, true);
+
+	return ret;
+}
+
 static const struct regmap_config smb347_regmap = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
 	.max_register	= SMB347_MAX_REGISTER,
 	.volatile_reg	= smb347_volatile_reg,
 	.readable_reg	= smb347_readable_reg,
+	.cache_type	= REGCACHE_FLAT,
+	.num_reg_defaults_raw = SMB347_MAX_REGISTER,
+};
+
+static const struct regulator_ops smb347_usb_vbus_regulator_ops = {
+	.is_enabled	= regulator_is_enabled_regmap,
+	.enable		= smb347_usb_vbus_regulator_enable,
+	.disable	= smb347_usb_vbus_regulator_disable,
+	.get_current_limit = smb347_usb_vbus_get_current_limit,
+	.set_current_limit = smb347_usb_vbus_set_current_limit,
 };
 
 static const struct power_supply_desc smb347_mains_desc = {
···
 	.num_properties	= ARRAY_SIZE(smb347_properties),
 };
 
+static const struct regulator_desc smb347_usb_vbus_regulator_desc = {
+	.name		= "smb347-usb-vbus",
+	.of_match	= of_match_ptr("usb-vbus"),
+	.ops		= &smb347_usb_vbus_regulator_ops,
+	.type		= REGULATOR_VOLTAGE,
+	.owner		= THIS_MODULE,
+	.enable_reg	= CMD_A,
+	.enable_mask	= CMD_A_OTG_ENABLED,
+	.enable_val	= CMD_A_OTG_ENABLED,
+	.fixed_uV	= 5000000,
+	.n_voltages	= 1,
+};
+
 static int smb347_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	struct power_supply_config mains_usb_cfg = {};
+	struct regulator_config usb_rdev_cfg = {};
 	struct device *dev = &client->dev;
 	struct smb347_charger *smb;
 	int ret;
···
 	if (ret)
 		return ret;
 
+	usb_rdev_cfg.dev = dev;
+	usb_rdev_cfg.driver_data = smb;
+	usb_rdev_cfg.regmap = smb->regmap;
+
+	smb->usb_rdev = devm_regulator_register(dev,
+						&smb347_usb_vbus_regulator_desc,
+						&usb_rdev_cfg);
+	if (IS_ERR(smb->usb_rdev)) {
+		smb347_irq_disable(smb);
+		return PTR_ERR(smb->usb_rdev);
+	}
+
 	return 0;
 }
 
···
 {
 	struct smb347_charger *smb = i2c_get_clientdata(client);
 
+	smb347_usb_vbus_regulator_disable(smb->usb_rdev);
 	smb347_irq_disable(smb);
 
 	return 0;
+}
+
+static void smb347_shutdown(struct i2c_client *client)
+{
+	smb347_remove(client);
 }
 
 static const struct i2c_device_id smb347_id[] = {
···
 	},
 	.probe = smb347_probe,
 	.remove = smb347_remove,
+	.shutdown = smb347_shutdown,
 	.id_table = smb347_id,
 };
 module_i2c_driver(smb347_driver);

include/dt-bindings/power/summit,smb347-charger.h

···
 #define SMB3XX_CHG_ENABLE_PIN_ACTIVE_LOW	1
 #define SMB3XX_CHG_ENABLE_PIN_ACTIVE_HIGH	2
 
+/* Polarity of INOK signal */
+#define SMB3XX_SYSOK_INOK_ACTIVE_LOW		0
+#define SMB3XX_SYSOK_INOK_ACTIVE_HIGH		1
+
 #endif

include/linux/linear_range.h

···
 int linear_range_get_selector_high(const struct linear_range *r,
 				   unsigned int val, unsigned int *selector,
 				   bool *found);
+void linear_range_get_selector_within(const struct linear_range *r,
+				      unsigned int val, unsigned int *selector);
 int linear_range_get_selector_low_array(const struct linear_range *r,
 					int ranges, unsigned int val,
 					unsigned int *selector, bool *found);

include/linux/platform_data/cros_ec_commands.h

···
 	EC_DEVICE_EVENT_TRACKPAD,
 	EC_DEVICE_EVENT_DSP,
 	EC_DEVICE_EVENT_WIFI,
+	EC_DEVICE_EVENT_WLC,
 };
 
 enum ec_device_event_param {
···
 
 /* Issue AP reset */
 #define EC_CMD_AP_RESET 0x0125
+
+/**
+ * Get the number of peripheral charge ports
+ */
+#define EC_CMD_PCHG_COUNT 0x0134
+
+#define EC_PCHG_MAX_PORTS 8
+
+struct ec_response_pchg_count {
+	uint8_t port_count;
+} __ec_align1;
+
+/**
+ * Get the status of a peripheral charge port
+ */
+#define EC_CMD_PCHG 0x0135
+
+struct ec_params_pchg {
+	uint8_t port;
+} __ec_align1;
+
+struct ec_response_pchg {
+	uint32_t error;			/* enum pchg_error */
+	uint8_t state;			/* enum pchg_state state */
+	uint8_t battery_percentage;
+	uint8_t unused0;
+	uint8_t unused1;
+	/* Fields added in version 1 */
+	uint32_t fw_version;
+	uint32_t dropped_event_count;
+} __ec_align2;
+
+enum pchg_state {
+	/* Charger is reset and not initialized. */
+	PCHG_STATE_RESET = 0,
+	/* Charger is initialized or disabled. */
+	PCHG_STATE_INITIALIZED,
+	/* Charger is enabled and ready to detect a device. */
+	PCHG_STATE_ENABLED,
+	/* Device is in proximity. */
+	PCHG_STATE_DETECTED,
+	/* Device is being charged. */
+	PCHG_STATE_CHARGING,
+	/* Device is fully charged. It implies DETECTED (& not charging). */
+	PCHG_STATE_FULL,
+	/* In download (a.k.a. firmware update) mode */
+	PCHG_STATE_DOWNLOAD,
+	/* In download mode. Ready for receiving data. */
+	PCHG_STATE_DOWNLOADING,
+	/* Device is ready for data communication. */
+	PCHG_STATE_CONNECTED,
+	/* Put no more entry below */
+	PCHG_STATE_COUNT,
+};
+
+#define EC_PCHG_STATE_TEXT { \
+	[PCHG_STATE_RESET] = "RESET", \
+	[PCHG_STATE_INITIALIZED] = "INITIALIZED", \
+	[PCHG_STATE_ENABLED] = "ENABLED", \
+	[PCHG_STATE_DETECTED] = "DETECTED", \
+	[PCHG_STATE_CHARGING] = "CHARGING", \
+	[PCHG_STATE_FULL] = "FULL", \
+	[PCHG_STATE_DOWNLOAD] = "DOWNLOAD", \
+	[PCHG_STATE_DOWNLOADING] = "DOWNLOADING", \
+	[PCHG_STATE_CONNECTED] = "CONNECTED", \
+	}
 
 /*****************************************************************************/
 /* Voltage regulator controls */

include/linux/power/max17042_battery.h

···
 	MAX17042_RelaxCFG	= 0x2A,
 	MAX17042_MiscCFG	= 0x2B,
 	MAX17042_TGAIN		= 0x2C,
-	MAx17042_TOFF		= 0x2D,
+	MAX17042_TOFF		= 0x2D,
 	MAX17042_CGAIN		= 0x2E,
 	MAX17042_COFF		= 0x2F,
 
···
 	MAX17042_VFSOC		= 0xFF,
 };
 
+/* Registers specific to max17055 only */
 enum max17055_register {
 	MAX17055_QRes		= 0x0C,
+	MAX17055_RCell		= 0x14,
 	MAX17055_TTF		= 0x20,
-	MAX17055_V_empty	= 0x3A,
-	MAX17055_TIMER		= 0x3E,
+	MAX17055_DieTemp	= 0x34,
 	MAX17055_USER_MEM	= 0x40,
-	MAX17055_RGAIN		= 0x42,
+	MAX17055_RGAIN		= 0x43,
 
 	MAX17055_ConvgCfg	= 0x49,
 	MAX17055_VFRemCap	= 0x4A,
···
 	MAX17055_AtAvCap	= 0xDF,
 };
 
-/* Registers specific to max17047/50 */
+/* Registers specific to max17047/50/55 */
 enum max17047_register {
 	MAX17047_QRTbl00	= 0x12,
 	MAX17047_FullSOCThr	= 0x13,
 	MAX17047_QRTbl10	= 0x22,
 	MAX17047_QRTbl20	= 0x32,
 	MAX17047_V_empty	= 0x3A,
+	MAX17047_TIMER		= 0x3E,
 	MAX17047_QRTbl30	= 0x42,
 };
 

include/linux/power_supply.h

···
  */
 
 struct power_supply_battery_info {
+	unsigned int technology;	    /* from the enum above */
 	int energy_full_design_uwh;	    /* microWatt-hours */
 	int charge_full_design_uah;	    /* microAmp-hours */
 	int voltage_min_design_uv;	    /* microVolts */

lib/linear_ranges.c

···
 }
 EXPORT_SYMBOL_GPL(linear_range_get_selector_high);
 
+/**
+ * linear_range_get_selector_within - return linear range selector for value
+ * @r:		pointer to linear range where selector is looked from
+ * @val:	value for which the selector is searched
+ * @selector:	address where found selector value is updated
+ *
+ * Return selector for which range value is closest match for given
+ * input value. Value is matching if it is equal or lower than given
+ * value. But return maximum selector if given value is higher than
+ * maximum value.
+ */
+void linear_range_get_selector_within(const struct linear_range *r,
+				      unsigned int val, unsigned int *selector)
+{
+	if (r->min > val) {
+		*selector = r->min_sel;
+		return;
+	}
+
+	if (linear_range_get_max_value(r) < val) {
+		*selector = r->max_sel;
+		return;
+	}
+
+	if (r->step == 0)
+		*selector = r->min_sel;
+	else
+		*selector = (val - r->min) / r->step + r->min_sel;
+}
+EXPORT_SYMBOL_GPL(linear_range_get_selector_within);
+
 MODULE_DESCRIPTION("linear-ranges helper");
 MODULE_LICENSE("GPL");