Merge tag 'for-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel: "Power-supply core: - support charge_types in extensions Power-supply drivers: - new driver for Pegatron Chagall battery - new driver for Maxim MAX8971 charger - new driver for Huawei Matebook E Go - bq27xxx: retry failed I2C transmissions - bq24190: add BQ24193 support - misc small cleanups and fixes Reset drivers: - new driver for Toradex SMARC Embedded Controller - reboot-mode: add support for modes containing / in DT - atmel,at91sam9260-reset: support sama7d65 - syscon-reboot: add Google GS101 support - misc small cleanups and fixes" * tag 'for-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (28 commits) power: supply: rt9471: Simplify definition of some struct linear_range power: supply: max77976: add EXTCON dependency power: supply: Add support for Maxim MAX8971 charger dt-bindings: power: supply: Document Maxim MAX8971 charger power: supply: max17040: adjust thermal channel scaling power: reset: syscon-reboot: add gs101-specific reset dt-bindings: reset: syscon-reboot: add google,gs101-reboot power: supply: add Huawei Matebook E Go psy driver power: supply: Add driver for Pegatron Chagall battery dt-bindings: power: supply: Document Pegatron Chagall fuel gauge dt-bindings: vendor-prefixes: add prefix for Pegatron Corporation power: supply: cros_charge-control: Avoid -Wflex-array-member-not-at-end warning power: reset: add Toradex Embedded Controller dt-bindings: power: reset: add toradex,smarc-ec power: supply: support charge_types in extensions power: supply: max77705: Fix workqueue error handling in probe power: supply: wm831x: Constify struct chg_map and some arrays power: bq24190: Add BQ24193 support dt-bindings: power: supply: bq24190: Add BQ24193 compatible power: supply: sysfs: Remove duplicate NUL termination ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2025-05-27 16:14:56 -0700
committer: Linus Torvalds <torvalds@linux-foundation.org> 2025-05-27 16:14:56 -0700
commit: c7c18635363f06c1943514c2f4c8170b325302e8 (patch)
tree: 078a1a2f24e36cc2e891be6405e3144472908a7f
parent: Merge tag 'spi-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi (diff)
parent: power: supply: rt9471: Simplify definition of some struct linear_range (diff)
download: wireguard-linux-c7c18635363f06c1943514c2f4c8170b325302e8.tar.xz
wireguard-linux-c7c18635363f06c1943514c2f4c8170b325302e8.zip
39 files changed, 2420 insertions, 127 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power
index 2a5c1a09a28f..560124cc3177 100644
--- a/Documentation/ABI/testing/sysfs-class-power
+++ b/Documentation/ABI/testing/sysfs-class-power
@@ -822,3 +822,46 @@ Description:
 		Each entry is a link to the device which registered the extension.
 
 		Access: Read
+
+What:		/sys/class/power_supply/max8971-charger/fast_charge_timer
+Date:		May 2025
+KernelVersion:	6.15.0
+Contact:	Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+		This entry shows and sets the maximum time the max8971
+		charger operates in fast-charge mode. When the timer expires
+		the device will terminate fast-charge mode (charging current
+		will drop to 0 A) and will trigger interrupt.
+
+		Valid values:
+
+		- 4 - 10 (hours), step by 1
+		- 0: disabled.
+
+What:		/sys/class/power_supply/max8971-charger/top_off_threshold_current
+Date:		May 2025
+KernelVersion:	6.15.0
+Contact:	Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+		This entry shows and sets the charging current threshold for
+		entering top-off charging mode. When charging current in fast
+		charge mode drops below this value, the charger will trigger
+		interrupt and start top-off charging mode.
+
+		Valid values:
+
+		- 50000 - 200000 (microamps), step by 50000 (rounded down)
+
+What:		/sys/class/power_supply/max8971-charger/top_off_timer
+Date:		May 2025
+KernelVersion:	6.15.0
+Contact:	Svyatoslav Ryhel <clamor95@gmail.com>
+Description:
+		This entry shows and sets the maximum time the max8971
+		charger operates in top-off charge mode. When the timer expires
+		the device will terminate top-off charge mode (charging current
+		will drop to 0 A) and will trigger interrupt.
+
+		Valid values:
+
+		- 0 - 70 (minutes), step by 10 (rounded down)
diff --git a/Documentation/ABI/testing/sysfs-class-power-gaokun b/Documentation/ABI/testing/sysfs-class-power-gaokun
new file mode 100644
index 000000000000..0633aed7b355
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-gaokun
@@ -0,0 +1,27 @@
+What:		/sys/class/power_supply/gaokun-ec-battery/smart_charge_delay
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	Pengyu Luo <mitltlatltl@gmail.com>
+Description:
+		This entry allows configuration of smart charging delay.
+
+		Smart charging behavior: when the power adapter is connected
+		for delay hours, battery charging will follow the rules of
+		charge_control_start_threshold and charge_control_end_threshold.
+		For more information about charge control, please refer to
+		sysfs-class-power.
+
+		Access: Read, Write
+
+		Valid values: In hours (non-negative)
+
+What:		/sys/class/power_supply/gaokun-ec-battery/battery_adaptive_charge
+Date:		March 2025
+KernelVersion:	6.15
+Contact:	Pengyu Luo <mitltlatltl@gmail.com>
+Description:
+		This entry allows enabling battery adaptive charging.
+
+		Access: Read, Write
+
+		Valid values: 0 (disabled) or 1 (enabled)
diff --git a/Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml b/Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml
index 19d3093e6cd2..ccd555870094 100644
--- a/Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml
+++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml
@@ -21,7 +21,9 @@ description: |+
 
 properties:
   compatible:
-    const: syscon-reboot
+    enum:
+      - syscon-reboot
+      - google,gs101-reboot
 
   mask:
     $ref: /schemas/types.yaml#/definitions/uint32
@@ -49,12 +51,6 @@ properties:
   priority:
     default: 192
 
-oneOf:
-  - required:
-      - offset
-  - required:
-      - reg
-
 required:
   - compatible
 
@@ -63,12 +59,29 @@ additionalProperties: false
 allOf:
   - $ref: restart-handler.yaml#
   - if:
-      not:
-        required:
-          - mask
+      properties:
+        compatible:
+          contains:
+            const: google,gs101-reboot
     then:
-      required:
-        - value
+      properties:
+        mask: false
+        offset: false
+        reg: false
+        value: false
+
+    else:
+      if:
+        not:
+          required:
+            - mask
+      then:
+        required:
+          - value
+
+      oneOf:
+        - required: [offset]
+        - required: [reg]
 
 examples:
   - |
@@ -78,3 +91,8 @@ examples:
         offset = <0x0>;
         mask = <0x1>;
     };
+
+  - |
+    reboot {
+        compatible = "google,gs101-reboot";
+    };
diff --git a/Documentation/devicetree/bindings/power/reset/toradex,smarc-ec.yaml b/Documentation/devicetree/bindings/power/reset/toradex,smarc-ec.yaml
new file mode 100644
index 000000000000..ffcd5f2c2bf6
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/toradex,smarc-ec.yaml
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/reset/toradex,smarc-ec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toradex Embedded Controller
+
+maintainers:
+  - Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
+  - Francesco Dolcini <francesco.dolcini@toradex.com>
+
+description: |
+  The Toradex Embedded Controller (EC) is used on Toradex SMARC modules,
+  primarily to manage power and reset functionalities.
+
+  The EC provides the following functions:
+    - Reads the SMARC POWER_BTN# and RESET_IN# signals and controls the PMIC accordingly.
+    - Controls the SoC boot mode signals based on the SMARC BOOT_SEL# and FORCE_RECOV# inputs.
+    - Manages the CARRIER_STDBY# signal in response to relevant SoC signals.
+
+  The EC runs a small firmware, factory programmed into its internal flash, and communicates over I2C.
+  It allows software to control power-off and reset functionalities of the module.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - toradex,smarc-imx95-ec
+          - toradex,smarc-imx8mp-ec
+      - const: toradex,smarc-ec
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        reset-controller@28 {
+            compatible = "toradex,smarc-imx95-ec", "toradex,smarc-ec";
+            reg = <0x28>;
+        };
+    };
diff --git a/Documentation/devicetree/bindings/power/supply/bq24190.yaml b/Documentation/devicetree/bindings/power/supply/bq24190.yaml
index 07adf88997b4..307c99c07721 100644
--- a/Documentation/devicetree/bindings/power/supply/bq24190.yaml
+++ b/Documentation/devicetree/bindings/power/supply/bq24190.yaml
@@ -19,6 +19,7 @@ properties:
       - ti,bq24190
       - ti,bq24192
       - ti,bq24192i
+      - ti,bq24193
       - ti,bq24196
       - ti,bq24296
       - ti,bq24297
diff --git a/Documentation/devicetree/bindings/power/supply/bq25980.yaml b/Documentation/devicetree/bindings/power/supply/bq25980.yaml
index b70ce8d7f86c..256adbef55eb 100644
--- a/Documentation/devicetree/bindings/power/supply/bq25980.yaml
+++ b/Documentation/devicetree/bindings/power/supply/bq25980.yaml
@@ -87,28 +87,28 @@ unevaluatedProperties: false
 examples:
   - |
     bat: battery {
-      compatible = "simple-battery";
-      constant-charge-current-max-microamp = <4000000>;
-      constant-charge-voltage-max-microvolt = <8400000>;
-      precharge-current-microamp = <160000>;
-      charge-term-current-microamp = <160000>;
+        compatible = "simple-battery";
+        constant-charge-current-max-microamp = <4000000>;
+        constant-charge-voltage-max-microvolt = <8400000>;
+        precharge-current-microamp = <160000>;
+        charge-term-current-microamp = <160000>;
     };
     #include <dt-bindings/gpio/gpio.h>
     #include <dt-bindings/interrupt-controller/irq.h>
     i2c {
-      #address-cells = <1>;
-      #size-cells = <0>;
-
-      bq25980: charger@65 {
-          compatible = "ti,bq25980";
-          reg = <0x65>;
-          interrupt-parent = <&gpio1>;
-          interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
-          ti,watchdog-timeout-ms = <0>;
-          ti,sc-ocp-limit-microamp = <2000000>;
-          ti,sc-ovp-limit-microvolt = <17800000>;
-          monitored-battery = <&bat>;
-      };
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        bq25980: charger@65 {
+            compatible = "ti,bq25980";
+            reg = <0x65>;
+            interrupt-parent = <&gpio1>;
+            interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+            ti,watchdog-timeout-ms = <0>;
+            ti,sc-ocp-limit-microamp = <2000000>;
+            ti,sc-ovp-limit-microvolt = <17800000>;
+            monitored-battery = <&bat>;
+        };
     };
 
 ...
diff --git a/Documentation/devicetree/bindings/power/supply/ingenic,battery.yaml b/Documentation/devicetree/bindings/power/supply/ingenic,battery.yaml
index 741022b4449d..cb04fb25d8ac 100644
--- a/Documentation/devicetree/bindings/power/supply/ingenic,battery.yaml
+++ b/Documentation/devicetree/bindings/power/supply/ingenic,battery.yaml
@@ -48,14 +48,14 @@ examples:
     #include <dt-bindings/iio/adc/ingenic,adc.h>
 
     simple_battery: battery {
-            compatible = "simple-battery";
-            voltage-min-design-microvolt = <3600000>;
-            voltage-max-design-microvolt = <4200000>;
+        compatible = "simple-battery";
+        voltage-min-design-microvolt = <3600000>;
+        voltage-max-design-microvolt = <4200000>;
     };
 
     ingenic-battery {
-            compatible = "ingenic,jz4740-battery";
-            io-channels = <&adc INGENIC_ADC_BATTERY>;
-            io-channel-names = "battery";
-            monitored-battery = <&simple_battery>;
+        compatible = "ingenic,jz4740-battery";
+        io-channels = <&adc INGENIC_ADC_BATTERY>;
+        io-channel-names = "battery";
+        monitored-battery = <&simple_battery>;
     };
diff --git a/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml
index 06595a953659..bc7ed7b22085 100644
--- a/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml
+++ b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml
@@ -61,13 +61,13 @@ additionalProperties: false
 examples:
   - |
     i2c {
-      #address-cells = <1>;
-      #size-cells = <0>;
-      charger: battery-charger@68 {
-              compatible = "lltc,ltc4162-l";
-              reg = <0x68>;
-              lltc,rsnsb-micro-ohms = <10000>;
-              lltc,rsnsi-micro-ohms = <16000>;
-              lltc,cell-count = <2>;
-      };
+        #address-cells = <1>;
+        #size-cells = <0>;
+        charger: battery-charger@68 {
+            compatible = "lltc,ltc4162-l";
+            reg = <0x68>;
+            lltc,rsnsb-micro-ohms = <10000>;
+            lltc,rsnsi-micro-ohms = <16000>;
+            lltc,cell-count = <2>;
+        };
     };
diff --git a/Documentation/devicetree/bindings/power/supply/maxim,max77705.yaml b/Documentation/devicetree/bindings/power/supply/maxim,max77705.yaml
index bce7fabbd9d3..e3b84068993b 100644
--- a/Documentation/devicetree/bindings/power/supply/maxim,max77705.yaml
+++ b/Documentation/devicetree/bindings/power/supply/maxim,max77705.yaml
@@ -37,8 +37,8 @@ examples:
     #include <dt-bindings/interrupt-controller/irq.h>
 
     i2c {
-      #address-cells = <1>;
-      #size-cells = <0>;
+        #address-cells = <1>;
+        #size-cells = <0>;
 
         charger@69 {
             compatible = "maxim,max77705-charger";
diff --git a/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml b/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml
new file mode 100644
index 000000000000..2244cc3d45a6
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/maxim,max8971.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/maxim,max8971.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Maxim MAX8971 IC charger
+
+maintainers:
+  - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+  The MAX8971 is a compact, high-frequency, high-efficiency switch-mode charger
+  for a one-cell lithium-ion (Li+) battery.
+
+allOf:
+  - $ref: power-supply.yaml#
+
+properties:
+  compatible:
+    const: maxim,max8971
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  monitored-battery: true
+
+  port:
+    description:
+      An optional port node to link the extcon device to detect type of plug.
+    $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        charger@35 {
+            compatible = "maxim,max8971";
+            reg = <0x35>;
+
+            interrupt-parent = <&gpio>;
+            interrupts = <74 IRQ_TYPE_LEVEL_LOW>;
+
+            monitored-battery = <&battery>;
+
+            port {
+                charger_input: endpoint {
+                    remote-endpoint = <&extcon_output>;
+                };
+            };
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/power/supply/pegatron,chagall-ec.yaml b/Documentation/devicetree/bindings/power/supply/pegatron,chagall-ec.yaml
new file mode 100644
index 000000000000..defb0861e268
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/pegatron,chagall-ec.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/pegatron,chagall-ec.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Pegatron Chagall EC
+
+maintainers:
+  - Svyatoslav Ryhel <clamor95@gmail.com>
+
+description:
+  Pegatron Chagall EC is based on an 8-bit programmable microcontroller from
+  Infineon/Cypress Semiconductor, it communicates over I2C and is used in the
+  Pegatron Chagall tablet for fuel gauge and battery control functions.
+
+$ref: /schemas/power/supply/power-supply.yaml
+
+properties:
+  compatible:
+    const: pegatron,chagall-ec
+
+  reg:
+    maxItems: 1
+
+  monitored-battery: true
+  power-supplies: true
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        embedded-controller@10 {
+            compatible = "pegatron,chagall-ec";
+            reg = <0x10>;
+
+            monitored-battery = <&battery>;
+            power-supplies = <&mains>;
+        };
+    };
+...
diff --git a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
index c3b33bbc7319..84c4801df8d9 100644
--- a/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/atmel,at91sam9260-reset.yaml
@@ -24,6 +24,9 @@ properties:
               - microchip,sam9x60-rstc
               - microchip,sama7g5-rstc
       - items:
+          - const: microchip,sama7d65-rstc
+          - const: microchip,sama7g5-rstc
+      - items:
           - const: atmel,sama5d3-rstc
           - const: atmel,at91sam9g45-rstc
       - items:
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 86f6a19b28ae..75ffaebc749d 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1158,6 +1158,8 @@ patternProperties:
     description: Parallax Inc.
   "^pda,.*":
     description: Precision Design Associates, Inc.
+  "^pegatron,.*":
+    description: Pegatron Corporation
   "^pericom,.*":
     description: Pericom Technology Inc.
   "^pervasive,.*":
diff --git a/MAINTAINERS b/MAINTAINERS
index 96a5be48686c..76926087ee0a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11002,6 +11002,7 @@ M:	Pengyu Luo <mitltlatltl@gmail.com>
 S:	Maintained
 F:	Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml
 F:	drivers/platform/arm64/huawei-gaokun-ec.c
+F:	drivers/power/supply/huawei-gaokun-battery.c
 F:	include/linux/platform_data/huawei-gaokun-ec.h
 
 HUGETLB SUBSYSTEM
@@ -24683,6 +24684,13 @@ L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
 F:	drivers/platform/x86/topstar-laptop.c
 
+TORADEX EMBEDDED CONTROLLER DRIVER
+M:	Emanuele Ghidoli <ghidoliemanuele@gmail.com>
+M:	Francesco Dolcini <francesco@dolcini.it>
+S:	Maintained
+F:	Documentation/devicetree/bindings/power/reset/toradex,smarc-ec.yaml
+F:	drivers/power/reset/tdx-ec-poweroff.c
+
 TORTURE-TEST MODULES
 M:	Davidlohr Bueso <dave@stgolabs.net>
 M:	"Paul E. McKenney" <paulmck@kernel.org>
diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig
index 60bf0ca64cf3..e71f0af4e378 100644
--- a/drivers/power/reset/Kconfig
+++ b/drivers/power/reset/Kconfig
@@ -216,6 +216,19 @@ config POWER_RESET_ST
 	help
 	  Reset support for STMicroelectronics boards.
 
+config POWER_RESET_TORADEX_EC
+	tristate "Toradex Embedded Controller power-off and reset driver"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  This driver supports power-off and reset for SMARC Toradex SoMs,
+	  for example the SMARC iMX8MP and SMARC iMX95, using Toradex
+	  Embedded Controller (EC).
+
+	  Say Y here if you have a Toradex SMARC SoM.
+
+	  If unsure, say N.
+
 config POWER_RESET_TPS65086
 	bool "TPS65086 restart driver"
 	depends on MFD_TPS65086
diff --git a/drivers/power/reset/Makefile b/drivers/power/reset/Makefile
index 10782d32e1da..1b9b63a1a873 100644
--- a/drivers/power/reset/Makefile
+++ b/drivers/power/reset/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
 obj-$(CONFIG_POWER_RESET_REGULATOR) += regulator-poweroff.o
 obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o
 obj-$(CONFIG_POWER_RESET_ST) += st-poweroff.o
+obj-$(CONFIG_POWER_RESET_TORADEX_EC) += tdx-ec-poweroff.o
 obj-$(CONFIG_POWER_RESET_TPS65086) += tps65086-restart.o
 obj-$(CONFIG_POWER_RESET_VERSATILE) += arm-versatile-reboot.o
 obj-$(CONFIG_POWER_RESET_VEXPRESS) += vexpress-poweroff.o
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index 036b18a1f90f..511f5a8f8961 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -129,12 +129,11 @@ static int at91_reset(struct notifier_block *this, unsigned long mode,
 		"	str	%4, [%0, %6]\n\t"
 		/* Disable SDRAM1 accesses */
 		"1:	tst	%1, #0\n\t"
-		"	beq	2f\n\t"
 		"	strne	%3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t"
 		/* Power down SDRAM1 */
 		"	strne	%4, [%1, %6]\n\t"
 		/* Reset CPU */
-		"2:	str	%5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t"
+		"	str	%5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t"
 
 		"	b	.\n\t"
 		:
@@ -145,7 +144,7 @@ static int at91_reset(struct notifier_block *this, unsigned long mode,
 		  "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN),
 		  "r" (reset->data->reset_args),
 		  "r" (reset->ramc_lpr)
-		: "r4");
+	);
 
 	return NOTIFY_DONE;
 }
diff --git a/drivers/power/reset/reboot-mode.c b/drivers/power/reset/reboot-mode.c
index b4076b10b893..fba53f638da0 100644
--- a/drivers/power/reset/reboot-mode.c
+++ b/drivers/power/reset/reboot-mode.c
@@ -23,20 +23,29 @@ static unsigned int get_reboot_mode_magic(struct reboot_mode_driver *reboot,
 					  const char *cmd)
 {
 	const char *normal = "normal";
-	int magic = 0;
 	struct mode_info *info;
+	char cmd_[110];
 
 	if (!cmd)
 		cmd = normal;
 
-	list_for_each_entry(info, &reboot->head, list) {
-		if (!strcmp(info->mode, cmd)) {
-			magic = info->magic;
-			break;
-		}
-	}
+	list_for_each_entry(info, &reboot->head, list)
+		if (!strcmp(info->mode, cmd))
+			return info->magic;
+
+	/* try to match again, replacing characters impossible in DT */
+	if (strscpy(cmd_, cmd, sizeof(cmd_)) == -E2BIG)
+		return 0;
 
-	return magic;
+	strreplace(cmd_, ' ', '-');
+	strreplace(cmd_, ',', '-');
+	strreplace(cmd_, '/', '-');
+
+	list_for_each_entry(info, &reboot->head, list)
+		if (!strcmp(info->mode, cmd_))
+			return info->magic;
+
+	return 0;
 }
 
 static int reboot_mode_notify(struct notifier_block *this,
diff --git a/drivers/power/reset/syscon-reboot.c b/drivers/power/reset/syscon-reboot.c
index d623d77e657e..2e2cf5f62d73 100644
--- a/drivers/power/reset/syscon-reboot.c
+++ b/drivers/power/reset/syscon-reboot.c
@@ -14,11 +14,24 @@
 #include <linux/reboot.h>
 #include <linux/regmap.h>
 
-struct syscon_reboot_context {
-	struct regmap *map;
+struct reboot_mode_bits {
 	u32 offset;
-	u32 value;
 	u32 mask;
+	u32 value;
+	bool valid;
+};
+
+struct reboot_data {
+	struct reboot_mode_bits mode_bits[REBOOT_SOFT + 1];
+	struct reboot_mode_bits catchall;
+};
+
+struct syscon_reboot_context {
+	struct regmap *map;
+
+	const struct reboot_data *rd; /* from of match data, if any */
+	struct reboot_mode_bits catchall; /* from DT */
+
 	struct notifier_block restart_handler;
 };
 
@@ -28,9 +41,21 @@ static int syscon_restart_handle(struct notifier_block *this,
 	struct syscon_reboot_context *ctx =
 			container_of(this, struct syscon_reboot_context,
 					restart_handler);
+	const struct reboot_mode_bits *mode_bits;
+
+	if (ctx->rd) {
+		if (mode < ARRAY_SIZE(ctx->rd->mode_bits) &&
+		    ctx->rd->mode_bits[mode].valid)
+			mode_bits = &ctx->rd->mode_bits[mode];
+		else
+			mode_bits = &ctx->rd->catchall;
+	} else {
+		mode_bits = &ctx->catchall;
+	}
 
 	/* Issue the reboot */
-	regmap_update_bits(ctx->map, ctx->offset, ctx->mask, ctx->value);
+	regmap_update_bits(ctx->map, mode_bits->offset, mode_bits->mask,
+			   mode_bits->value);
 
 	mdelay(1000);
 
@@ -42,7 +67,6 @@ static int syscon_reboot_probe(struct platform_device *pdev)
 {
 	struct syscon_reboot_context *ctx;
 	struct device *dev = &pdev->dev;
-	int mask_err, value_err;
 	int priority;
 	int err;
 
@@ -60,24 +84,33 @@ static int syscon_reboot_probe(struct platform_device *pdev)
 	if (of_property_read_s32(pdev->dev.of_node, "priority", &priority))
 		priority = 192;
 
-	if (of_property_read_u32(pdev->dev.of_node, "offset", &ctx->offset))
-		if (of_property_read_u32(pdev->dev.of_node, "reg", &ctx->offset))
-			return -EINVAL;
+	ctx->rd = of_device_get_match_data(dev);
+	if (!ctx->rd) {
+		int mask_err, value_err;
 
-	value_err = of_property_read_u32(pdev->dev.of_node, "value", &ctx->value);
-	mask_err = of_property_read_u32(pdev->dev.of_node, "mask", &ctx->mask);
-	if (value_err && mask_err) {
-		dev_err(dev, "unable to read 'value' and 'mask'");
-		return -EINVAL;
-	}
+		if (of_property_read_u32(pdev->dev.of_node, "offset",
+					 &ctx->catchall.offset) &&
+		    of_property_read_u32(pdev->dev.of_node, "reg",
+					 &ctx->catchall.offset))
+			return -EINVAL;
 
-	if (value_err) {
-		/* support old binding */
-		ctx->value = ctx->mask;
-		ctx->mask = 0xFFFFFFFF;
-	} else if (mask_err) {
-		/* support value without mask*/
-		ctx->mask = 0xFFFFFFFF;
+		value_err = of_property_read_u32(pdev->dev.of_node, "value",
+						 &ctx->catchall.value);
+		mask_err = of_property_read_u32(pdev->dev.of_node, "mask",
+						&ctx->catchall.mask);
+		if (value_err && mask_err) {
+			dev_err(dev, "unable to read 'value' and 'mask'");
+			return -EINVAL;
+		}
+
+		if (value_err) {
+			/* support old binding */
+			ctx->catchall.value = ctx->catchall.mask;
+			ctx->catchall.mask = 0xFFFFFFFF;
+		} else if (mask_err) {
+			/* support value without mask */
+			ctx->catchall.mask = 0xFFFFFFFF;
+		}
 	}
 
 	ctx->restart_handler.notifier_call = syscon_restart_handle;
@@ -89,7 +122,30 @@ static int syscon_reboot_probe(struct platform_device *pdev)
 	return err;
 }
 
+static const struct reboot_data gs101_reboot_data = {
+	.mode_bits = {
+		[REBOOT_WARM] = {
+			.offset = 0x3a00, /* SYSTEM_CONFIGURATION */
+			.mask = 0x00000002, /* SWRESET_SYSTEM */
+			.value = 0x00000002,
+			.valid = true,
+		},
+		[REBOOT_SOFT] = {
+			.offset = 0x3a00, /* SYSTEM_CONFIGURATION */
+			.mask = 0x00000002, /* SWRESET_SYSTEM */
+			.value = 0x00000002,
+			.valid = true,
+		},
+	},
+	.catchall = {
+		.offset = 0x3e9c, /* PAD_CTRL_PWR_HOLD */
+		.mask = 0x00000100,
+		.value = 0x00000000,
+	},
+};
+
 static const struct of_device_id syscon_reboot_of_match[] = {
+	{ .compatible = "google,gs101-reboot", .data = &gs101_reboot_data  },
 	{ .compatible = "syscon-reboot" },
 	{}
 };
diff --git a/drivers/power/reset/tdx-ec-poweroff.c b/drivers/power/reset/tdx-ec-poweroff.c
new file mode 100644
index 000000000000..3302a127fce5
--- /dev/null
+++ b/drivers/power/reset/tdx-ec-poweroff.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Toradex Embedded Controller driver
+ *
+ * Copyright (C) 2025 Toradex
+ *
+ * Author: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
+ */
+
+#include <linux/array_size.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#define EC_CHIP_ID_REG                  0x00
+#define EC_CHIP_ID_SMARC_IMX95          0x11
+#define EC_CHIP_ID_SMARC_IMX8MP         0x12
+
+#define EC_VERSION_REG_MAJOR            0x01
+#define EC_VERSION_REG_MINOR            0x02
+#define EC_ID_VERSION_LEN               3
+
+#define EC_CMD_REG                      0xD0
+#define EC_CMD_POWEROFF                 0x01
+#define EC_CMD_RESET                    0x02
+
+#define EC_REG_MAX                      0xD0
+
+static const struct regmap_range volatile_ranges[] = {
+	regmap_reg_range(EC_CMD_REG, EC_CMD_REG),
+};
+
+static const struct regmap_access_table volatile_table = {
+	.yes_ranges	= volatile_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(volatile_ranges),
+};
+
+static const struct regmap_range read_ranges[] = {
+	regmap_reg_range(EC_CHIP_ID_REG, EC_VERSION_REG_MINOR),
+};
+
+static const struct regmap_access_table read_table = {
+	.yes_ranges	= read_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(read_ranges),
+};
+
+static const struct regmap_config regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.max_register	= EC_REG_MAX,
+	.cache_type	= REGCACHE_RBTREE,
+	.rd_table	= &read_table,
+	.volatile_table = &volatile_table,
+};
+
+static int tdx_ec_cmd(struct regmap *regmap, u8 cmd)
+{
+	int err = regmap_write(regmap, EC_CMD_REG, cmd);
+
+	if (err)
+		dev_err(regmap_get_device(regmap), "Failed to send command 0x%02X: %d\n", cmd, err);
+
+	return err;
+}
+
+static int tdx_ec_power_off(struct sys_off_data *data)
+{
+	struct regmap *regmap = data->cb_data;
+	int err;
+
+	err = tdx_ec_cmd(regmap, EC_CMD_POWEROFF);
+
+	return err ? NOTIFY_BAD : NOTIFY_DONE;
+}
+
+static int tdx_ec_restart(struct sys_off_data *data)
+{
+	struct regmap *regmap = data->cb_data;
+	int err;
+
+	err = tdx_ec_cmd(regmap, EC_CMD_RESET);
+
+	return err ? NOTIFY_BAD : NOTIFY_DONE;
+}
+
+static int tdx_ec_register_power_off_restart(struct device *dev, struct regmap *regmap)
+{
+	int err;
+
+	err = devm_register_sys_off_handler(dev, SYS_OFF_MODE_RESTART,
+					    SYS_OFF_PRIO_FIRMWARE,
+					    tdx_ec_restart, regmap);
+	if (err)
+		return err;
+
+	return devm_register_sys_off_handler(dev, SYS_OFF_MODE_POWER_OFF,
+					     SYS_OFF_PRIO_FIRMWARE,
+					     tdx_ec_power_off, regmap);
+}
+
+static int tdx_ec_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	u8 reg_val[EC_ID_VERSION_LEN];
+	struct regmap *regmap;
+	int err;
+
+	regmap = devm_regmap_init_i2c(client, &regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	err = regmap_bulk_read(regmap, EC_CHIP_ID_REG, &reg_val, EC_ID_VERSION_LEN);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Cannot read id and version registers\n");
+
+	dev_info(dev, "Toradex Embedded Controller id %x - Firmware %u.%u\n",
+		 reg_val[0], reg_val[1], reg_val[2]);
+
+	err = tdx_ec_register_power_off_restart(dev, regmap);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "Cannot register system restart handler\n");
+
+	return 0;
+}
+
+static const struct of_device_id __maybe_unused of_tdx_ec_match[] = {
+	{ .compatible = "toradex,smarc-ec" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, of_tdx_ec_match);
+
+static struct i2c_driver tdx_ec_driver = {
+	.probe			= tdx_ec_probe,
+	.driver			= {
+		.name		= "toradex-smarc-ec",
+		.of_match_table = of_tdx_ec_match,
+	},
+};
+module_i2c_driver(tdx_ec_driver);
+
+MODULE_AUTHOR("Emanuele Ghidoli <emanuele.ghidoli@toradex.com>");
+MODULE_DESCRIPTION("Toradex SMARC Embedded Controller driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index 8dbd39afa43c..79ddb006e2da 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -107,6 +107,18 @@ config BATTERY_ACT8945A
 	  Say Y here to enable support for power supply provided by
 	  Active-semi ActivePath ACT8945A charger.
 
+config BATTERY_CHAGALL
+	tristate "Pegatron Chagall battery driver"
+	depends on I2C
+	depends on LEDS_CLASS
+	help
+	  Say Y to include support for Cypress CG7153AM IC based battery
+	  fuel gauge with custom firmware found in Pegatron Chagall based
+	  tablet line.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called chagall-battery.
+
 config BATTERY_CPCAP
 	tristate "Motorola CPCAP PMIC battery driver"
 	depends on MFD_CPCAP && IIO
@@ -161,6 +173,16 @@ config BATTERY_DS2782
 	  Say Y here to enable support for the DS2782/DS2786 standalone battery
 	  gas-gauge.
 
+config BATTERY_HUAWEI_GAOKUN
+	tristate "Huawei Matebook E Go power supply"
+	depends on EC_HUAWEI_GAOKUN
+	help
+	  This driver enables battery and adapter support on the Huawei Matebook
+	  E Go, which is a sc8280xp-based 2-in-1 tablet.
+
+	  To compile the driver as a module, choose M here: the module will be
+	  called huawei-gaokun-battery.
+
 config BATTERY_LEGO_EV3
 	tristate "LEGO MINDSTORMS EV3 battery"
 	depends on OF && IIO && GPIOLIB && (ARCH_DAVINCI_DA850 || COMPILE_TEST)
@@ -595,6 +617,21 @@ config CHARGER_MAX77976
 	  This driver can also be built as a module. If so, the module will be
 	  called max77976_charger.
 
+config CHARGER_MAX8971
+	tristate "Maxim MAX8971 battery charger driver"
+	depends on I2C
+	depends on EXTCON || !EXTCON
+	select REGMAP_I2C
+	help
+	  The MAX8971 is a compact, high-frequency, high-efficiency switch-mode
+	  charger for a one-cell lithium-ion (Li+) battery. It delivers up to
+	  1.55A of current to the battery from inputs up to 7.5V and withstands
+	  transient inputs up to 22V.
+
+	  Say Y to enable support for the Maxim MAX8971 battery charger.
+	  This driver can also be built as a module. If so, the module will be
+	  called max8971_charger.
+
 config CHARGER_MAX8997
 	tristate "Maxim MAX8997/MAX8966 PMIC battery charger driver"
 	depends on MFD_MAX8997 && REGULATOR_MAX8997
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 61677be328b0..4f5f8e3507f8 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_CHARGER_ADP5061)	+= adp5061.o
 obj-$(CONFIG_BATTERY_ACT8945A)	+= act8945a_charger.o
 obj-$(CONFIG_BATTERY_AXP20X)	+= axp20x_battery.o
 obj-$(CONFIG_CHARGER_AXP20X)	+= axp20x_ac_power.o
+obj-$(CONFIG_BATTERY_CHAGALL)	+= chagall-battery.o
 obj-$(CONFIG_BATTERY_CPCAP)	+= cpcap-battery.o
 obj-$(CONFIG_BATTERY_CW2015)	+= cw2015_battery.o
 obj-$(CONFIG_BATTERY_DS2760)	+= ds2760_battery.o
@@ -31,6 +32,7 @@ obj-$(CONFIG_BATTERY_DS2781)	+= ds2781_battery.o
 obj-$(CONFIG_BATTERY_DS2782)	+= ds2782_battery.o
 obj-$(CONFIG_BATTERY_GAUGE_LTC2941)	+= ltc2941-battery-gauge.o
 obj-$(CONFIG_BATTERY_GOLDFISH)	+= goldfish_battery.o
+obj-$(CONFIG_BATTERY_HUAWEI_GAOKUN)	+= huawei-gaokun-battery.o
 obj-$(CONFIG_BATTERY_LEGO_EV3)	+= lego_ev3_battery.o
 obj-$(CONFIG_BATTERY_LENOVO_YOGA_C630) += lenovo_yoga_c630_battery.o
 obj-$(CONFIG_BATTERY_PMU)	+= pmu_battery.o
@@ -81,6 +83,7 @@ obj-$(CONFIG_CHARGER_MAX77650)	+= max77650-charger.o
 obj-$(CONFIG_CHARGER_MAX77693)	+= max77693_charger.o
 obj-$(CONFIG_CHARGER_MAX77705)	+= max77705_charger.o
 obj-$(CONFIG_CHARGER_MAX77976)	+= max77976_charger.o
+obj-$(CONFIG_CHARGER_MAX8971)	+= max8971_charger.o
 obj-$(CONFIG_CHARGER_MAX8997)	+= max8997_charger.o
 obj-$(CONFIG_CHARGER_MAX8998)	+= max8998_charger.o
 obj-$(CONFIG_CHARGER_MP2629)	+= mp2629_charger.o
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index f0d97ab45bd8..1867beadd7af 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -207,6 +207,7 @@ enum bq24190_chip {
 	BQ24190,
 	BQ24192,
 	BQ24192i,
+	BQ24193,
 	BQ24196,
 	BQ24296,
 	BQ24297,
@@ -2021,6 +2022,17 @@ static const struct bq24190_chip_info bq24190_chip_info_tbl[] = {
 		.get_ntc_status = bq24190_charger_get_ntc_status,
 		.set_otg_vbus = bq24190_set_otg_vbus,
 	},
+	[BQ24193] = {
+		.ichg_array_size = ARRAY_SIZE(bq24190_ccc_ichg_values),
+#ifdef CONFIG_REGULATOR
+		.vbus_desc = &bq24190_vbus_desc,
+#endif
+		.check_chip = bq24190_check_chip,
+		.set_chg_config = bq24190_battery_set_chg_config,
+		.ntc_fault_mask = BQ24190_REG_F_NTC_FAULT_MASK,
+		.get_ntc_status = bq24190_charger_get_ntc_status,
+		.set_otg_vbus = bq24190_set_otg_vbus,
+	},
 	[BQ24196] = {
 		.ichg_array_size = ARRAY_SIZE(bq24190_ccc_ichg_values),
 #ifdef CONFIG_REGULATOR
@@ -2308,6 +2320,7 @@ static const struct i2c_device_id bq24190_i2c_ids[] = {
 	{ "bq24190", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24190] },
 	{ "bq24192", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24192] },
 	{ "bq24192i", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24192i] },
+	{ "bq24193", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24193] },
 	{ "bq24196", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24196] },
 	{ "bq24296", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24296] },
 	{ "bq24297", (kernel_ulong_t)&bq24190_chip_info_tbl[BQ24297] },
@@ -2319,6 +2332,7 @@ static const struct of_device_id bq24190_of_match[] = {
 	{ .compatible = "ti,bq24190", .data = &bq24190_chip_info_tbl[BQ24190] },
 	{ .compatible = "ti,bq24192", .data = &bq24190_chip_info_tbl[BQ24192] },
 	{ .compatible = "ti,bq24192i", .data = &bq24190_chip_info_tbl[BQ24192i] },
+	{ .compatible = "ti,bq24193", .data = &bq24190_chip_info_tbl[BQ24193] },
 	{ .compatible = "ti,bq24196", .data = &bq24190_chip_info_tbl[BQ24196] },
 	{ .compatible = "ti,bq24296", .data = &bq24190_chip_info_tbl[BQ24296] },
 	{ .compatible = "ti,bq24297", .data = &bq24190_chip_info_tbl[BQ24297] },
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c
index 2f31d750a4c1..93dcebbe1141 100644
--- a/drivers/power/supply/bq27xxx_battery.c
+++ b/drivers/power/supply/bq27xxx_battery.c
@@ -2131,7 +2131,7 @@ static int bq27xxx_battery_get_property(struct power_supply *psy,
 	mutex_unlock(&di->lock);
 
 	if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
-		return -ENODEV;
+		return di->cache.flags;
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_STATUS:
diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c
index ba0d22d90429..868e95f0887e 100644
--- a/drivers/power/supply/bq27xxx_battery_i2c.c
+++ b/drivers/power/supply/bq27xxx_battery_i2c.c
@@ -6,6 +6,7 @@
  *	Andrew F. Davis <afd@ti.com>
  */
 
+#include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
@@ -31,6 +32,7 @@ static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg,
 	struct i2c_msg msg[2];
 	u8 data[2];
 	int ret;
+	int retry = 0;
 
 	if (!client->adapter)
 		return -ENODEV;
@@ -47,7 +49,16 @@ static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg,
 	else
 		msg[1].len = 2;
 
-	ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+	do {
+		ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
+		if (ret == -EBUSY && ++retry < 3) {
+			/* sleep 10 milliseconds when busy */
+			usleep_range(10000, 11000);
+			continue;
+		}
+		break;
+	} while (1);
+
 	if (ret < 0)
 		return ret;
 
diff --git a/drivers/power/supply/chagall-battery.c b/drivers/power/supply/chagall-battery.c
new file mode 100644
index 000000000000..8b05422aca6f
--- /dev/null
+++ b/drivers/power/supply/chagall-battery.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/array_size.h>
+#include <linux/delay.h>
+#include <linux/devm-helpers.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+
+#define CHAGALL_REG_LED_AMBER				0x60
+#define CHAGALL_REG_LED_WHITE				0x70
+#define CHAGALL_REG_BATTERY_TEMPERATURE			0xa2
+#define CHAGALL_REG_BATTERY_VOLTAGE			0xa4
+#define CHAGALL_REG_BATTERY_CURRENT			0xa6
+#define CHAGALL_REG_BATTERY_CAPACITY			0xa8
+#define CHAGALL_REG_BATTERY_CHARGING_CURRENT		0xaa
+#define CHAGALL_REG_BATTERY_CHARGING_VOLTAGE		0xac
+#define CHAGALL_REG_BATTERY_STATUS			0xae
+#define   BATTERY_DISCHARGING				BIT(6)
+#define   BATTERY_FULL_CHARGED				BIT(5)
+#define   BATTERY_FULL_DISCHARGED			BIT(4)
+#define CHAGALL_REG_BATTERY_REMAIN_CAPACITY		0xb0
+#define CHAGALL_REG_BATTERY_FULL_CAPACITY		0xb2
+#define CHAGALL_REG_MAX_COUNT				0xb4
+
+#define CHAGALL_BATTERY_DATA_REFRESH			5000
+#define TEMP_CELSIUS_OFFSET				2731
+
+static const struct regmap_config chagall_battery_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = CHAGALL_REG_MAX_COUNT,
+	.reg_format_endian = REGMAP_ENDIAN_LITTLE,
+	.val_format_endian = REGMAP_ENDIAN_LITTLE,
+};
+
+struct chagall_battery_data {
+	struct regmap *regmap;
+	struct led_classdev amber_led;
+	struct led_classdev white_led;
+	struct power_supply *battery;
+	struct delayed_work poll_work;
+	u16 last_state;
+};
+
+static void chagall_led_set_brightness_amber(struct led_classdev *led,
+					     enum led_brightness brightness)
+{
+	struct chagall_battery_data *cg =
+		container_of(led, struct chagall_battery_data, amber_led);
+
+	regmap_write(cg->regmap, CHAGALL_REG_LED_AMBER, brightness);
+}
+
+static void chagall_led_set_brightness_white(struct led_classdev *led,
+					     enum led_brightness brightness)
+{
+	struct chagall_battery_data *cg =
+		container_of(led, struct chagall_battery_data, white_led);
+
+	regmap_write(cg->regmap, CHAGALL_REG_LED_WHITE, brightness);
+}
+
+static const enum power_supply_property chagall_battery_properties[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CURRENT_MAX,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+};
+
+static const unsigned int chagall_battery_prop_offs[] = {
+	[POWER_SUPPLY_PROP_STATUS] = CHAGALL_REG_BATTERY_STATUS,
+	[POWER_SUPPLY_PROP_VOLTAGE_NOW] = CHAGALL_REG_BATTERY_VOLTAGE,
+	[POWER_SUPPLY_PROP_VOLTAGE_MAX] = CHAGALL_REG_BATTERY_CHARGING_VOLTAGE,
+	[POWER_SUPPLY_PROP_CURRENT_NOW] = CHAGALL_REG_BATTERY_CURRENT,
+	[POWER_SUPPLY_PROP_CURRENT_MAX] = CHAGALL_REG_BATTERY_CHARGING_CURRENT,
+	[POWER_SUPPLY_PROP_CAPACITY] = CHAGALL_REG_BATTERY_CAPACITY,
+	[POWER_SUPPLY_PROP_TEMP] = CHAGALL_REG_BATTERY_TEMPERATURE,
+	[POWER_SUPPLY_PROP_CHARGE_FULL] = CHAGALL_REG_BATTERY_FULL_CAPACITY,
+	[POWER_SUPPLY_PROP_CHARGE_NOW] = CHAGALL_REG_BATTERY_REMAIN_CAPACITY,
+};
+
+static int chagall_battery_get_value(struct chagall_battery_data *cg,
+				     enum power_supply_property psp, u32 *val)
+{
+	if (psp >= ARRAY_SIZE(chagall_battery_prop_offs))
+		return -EINVAL;
+	if (!chagall_battery_prop_offs[psp])
+		return -EINVAL;
+
+	/* Battery data is stored in 2 consecutive registers with little-endian */
+	return regmap_bulk_read(cg->regmap, chagall_battery_prop_offs[psp], val, 2);
+}
+
+static int chagall_battery_get_status(u32 status_reg)
+{
+	if (status_reg & BATTERY_FULL_CHARGED)
+		return POWER_SUPPLY_STATUS_FULL;
+	else if (status_reg & BATTERY_DISCHARGING)
+		return POWER_SUPPLY_STATUS_DISCHARGING;
+	else
+		return POWER_SUPPLY_STATUS_CHARGING;
+}
+
+static int chagall_battery_get_property(struct power_supply *psy,
+					enum power_supply_property psp,
+					union power_supply_propval *val)
+{
+	struct chagall_battery_data *cg = power_supply_get_drvdata(psy);
+	int ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = 1;
+		break;
+
+	default:
+		ret = chagall_battery_get_value(cg, psp, &val->intval);
+		if (ret)
+			return ret;
+
+		switch (psp) {
+		case POWER_SUPPLY_PROP_TEMP:
+			val->intval -= TEMP_CELSIUS_OFFSET;
+			break;
+
+		case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+		case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		case POWER_SUPPLY_PROP_CURRENT_MAX:
+		case POWER_SUPPLY_PROP_CURRENT_NOW:
+		case POWER_SUPPLY_PROP_CHARGE_FULL:
+		case POWER_SUPPLY_PROP_CHARGE_NOW:
+			val->intval *= 1000;
+			break;
+
+		case POWER_SUPPLY_PROP_STATUS:
+			val->intval = chagall_battery_get_status(val->intval);
+			break;
+
+		default:
+			break;
+		}
+
+		break;
+	}
+
+	return 0;
+}
+
+static void chagall_battery_poll_work(struct work_struct *work)
+{
+	struct chagall_battery_data *cg =
+		container_of(work, struct chagall_battery_data, poll_work.work);
+	u32 state;
+	int ret;
+
+	ret = chagall_battery_get_value(cg, POWER_SUPPLY_PROP_STATUS, &state);
+	if (ret)
+		return;
+
+	state = chagall_battery_get_status(state);
+
+	if (cg->last_state != state) {
+		cg->last_state = state;
+		power_supply_changed(cg->battery);
+	}
+
+	/* continuously send uevent notification */
+	schedule_delayed_work(&cg->poll_work,
+			      msecs_to_jiffies(CHAGALL_BATTERY_DATA_REFRESH));
+}
+
+static const struct power_supply_desc chagall_battery_desc = {
+	.name = "chagall-battery",
+	.type = POWER_SUPPLY_TYPE_BATTERY,
+	.properties = chagall_battery_properties,
+	.num_properties = ARRAY_SIZE(chagall_battery_properties),
+	.get_property = chagall_battery_get_property,
+	.external_power_changed = power_supply_changed,
+};
+
+static int chagall_battery_probe(struct i2c_client *client)
+{
+	struct chagall_battery_data *cg;
+	struct device *dev = &client->dev;
+	struct power_supply_config cfg = { };
+	int ret;
+
+	cg = devm_kzalloc(dev, sizeof(*cg), GFP_KERNEL);
+	if (!cg)
+		return -ENOMEM;
+
+	cfg.drv_data = cg;
+	cfg.fwnode = dev_fwnode(dev);
+
+	i2c_set_clientdata(client, cg);
+
+	cg->regmap = devm_regmap_init_i2c(client, &chagall_battery_regmap_config);
+	if (IS_ERR(cg->regmap))
+		return dev_err_probe(dev, PTR_ERR(cg->regmap), "cannot allocate regmap\n");
+
+	cg->last_state = POWER_SUPPLY_STATUS_UNKNOWN;
+	cg->battery = devm_power_supply_register(dev, &chagall_battery_desc, &cfg);
+	if (IS_ERR(cg->battery))
+		return dev_err_probe(dev, PTR_ERR(cg->battery),
+				     "failed to register power supply\n");
+
+	cg->amber_led.name = "power::amber";
+	cg->amber_led.max_brightness = 1;
+	cg->amber_led.flags = LED_CORE_SUSPENDRESUME;
+	cg->amber_led.brightness_set = chagall_led_set_brightness_amber;
+	cg->amber_led.default_trigger = "chagall-battery-charging";
+
+	ret = devm_led_classdev_register(dev, &cg->amber_led);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to register amber LED\n");
+
+	cg->white_led.name = "power::white";
+	cg->white_led.max_brightness = 1;
+	cg->white_led.flags = LED_CORE_SUSPENDRESUME;
+	cg->white_led.brightness_set = chagall_led_set_brightness_white;
+	cg->white_led.default_trigger = "chagall-battery-full";
+
+	ret = devm_led_classdev_register(dev, &cg->white_led);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to register white LED\n");
+
+	led_set_brightness(&cg->amber_led, LED_OFF);
+	led_set_brightness(&cg->white_led, LED_OFF);
+
+	ret = devm_delayed_work_autocancel(dev, &cg->poll_work, chagall_battery_poll_work);
+	if (ret)
+		return ret;
+
+	schedule_delayed_work(&cg->poll_work, msecs_to_jiffies(CHAGALL_BATTERY_DATA_REFRESH));
+
+	return 0;
+}
+
+static int __maybe_unused chagall_battery_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct chagall_battery_data *cg = i2c_get_clientdata(client);
+
+	cancel_delayed_work_sync(&cg->poll_work);
+
+	return 0;
+}
+
+static int __maybe_unused chagall_battery_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct chagall_battery_data *cg = i2c_get_clientdata(client);
+
+	schedule_delayed_work(&cg->poll_work, msecs_to_jiffies(CHAGALL_BATTERY_DATA_REFRESH));
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(chagall_battery_pm_ops,
+			 chagall_battery_suspend, chagall_battery_resume);
+
+static const struct of_device_id chagall_of_match[] = {
+	{ .compatible = "pegatron,chagall-ec" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, chagall_of_match);
+
+static struct i2c_driver chagall_battery_driver = {
+	.driver = {
+		.name = "chagall-battery",
+		.pm = &chagall_battery_pm_ops,
+		.of_match_table = chagall_of_match,
+	},
+	.probe = chagall_battery_probe,
+};
+module_i2c_driver(chagall_battery_driver);
+
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("Pegatron Chagall fuel gauge driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/collie_battery.c b/drivers/power/supply/collie_battery.c
index 68390bd1004f..3daf7befc0bf 100644
--- a/drivers/power/supply/collie_battery.c
+++ b/drivers/power/supply/collie_battery.c
@@ -440,6 +440,7 @@ err_put_gpio_full:
 
 static void collie_bat_remove(struct ucb1x00_dev *dev)
 {
+	device_init_wakeup(&ucb->dev, 0);
 	free_irq(gpiod_to_irq(collie_bat_main.gpio_full), &collie_bat_main);
 	power_supply_unregister(collie_bat_bu.psy);
 	power_supply_unregister(collie_bat_main.psy);
diff --git a/drivers/power/supply/cros_charge-control.c b/drivers/power/supply/cros_charge-control.c
index 02d5bdbe2e8d..53e6a77e03fc 100644
--- a/drivers/power/supply/cros_charge-control.c
+++ b/drivers/power/supply/cros_charge-control.c
@@ -47,29 +47,20 @@ struct cros_chctl_priv {
 static int cros_chctl_send_charge_control_cmd(struct cros_ec_device *cros_ec,
 					      u8 cmd_version, struct ec_params_charge_control *req)
 {
+	int ret;
 	static const u8 outsizes[] = {
 		[1] = offsetof(struct ec_params_charge_control, cmd),
 		[2] = sizeof(struct ec_params_charge_control),
 		[3] = sizeof(struct ec_params_charge_control),
 	};
 
-	struct {
-		struct cros_ec_command msg;
-		union {
-			struct ec_params_charge_control req;
-			struct ec_response_charge_control resp;
-		} __packed data;
-	} __packed buf = {
-		.msg = {
-			.command = EC_CMD_CHARGE_CONTROL,
-			.version = cmd_version,
-			.insize  = 0,
-			.outsize = outsizes[cmd_version],
-		},
-		.data.req = *req,
-	};
+	ret = cros_ec_cmd(cros_ec, cmd_version, EC_CMD_CHARGE_CONTROL, req,
+			  outsizes[cmd_version], NULL, 0);
+
+	if (ret < 0)
+		return ret;
 
-	return cros_ec_cmd_xfer_status(cros_ec, &buf.msg);
+	return 0;
 }
 
 static int cros_chctl_configure_ec(struct cros_chctl_priv *priv)
diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c
index 1dfd5b0cb30d..1b2da9b5fb65 100644
--- a/drivers/power/supply/gpio-charger.c
+++ b/drivers/power/supply/gpio-charger.c
@@ -366,7 +366,9 @@ static int gpio_charger_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, gpio_charger);
 
-	device_init_wakeup(dev, 1);
+	ret = devm_device_init_wakeup(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init wakeup\n");
 
 	return 0;
 }
diff --git a/drivers/power/supply/huawei-gaokun-battery.c b/drivers/power/supply/huawei-gaokun-battery.c
new file mode 100644
index 000000000000..e4dfec3b4241
--- /dev/null
+++ b/drivers/power/supply/huawei-gaokun-battery.c
@@ -0,0 +1,645 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * huawei-gaokun-battery - A power supply driver for HUAWEI Matebook E Go
+ *
+ * Copyright (C) 2024 Pengyu Luo <mitltlatltl@gmail.com>
+ */
+
+#include <linux/auxiliary_bus.h>
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/platform_data/huawei-gaokun-ec.h>
+#include <linux/power_supply.h>
+#include <linux/sprintf.h>
+
+/* -------------------------------------------------------------------------- */
+/* String Data Reg */
+
+#define EC_BAT_VENDOR		0x01 /* from 0x01 to 0x0F, SUNWODA */
+#define EC_BAT_MODEL		0x11 /* from 0x11 to 0x1F, HB30A8P9ECW-22T */
+
+#define EC_ADP_STATUS		0x81
+#define EC_AC_STATUS		BIT(0)
+#define EC_BAT_PRESENT		BIT(1) /* BATC._STA */
+
+#define EC_BAT_STATUS		0x82 /* _BST */
+#define EC_BAT_DISCHARGING	BIT(0)
+#define EC_BAT_CHARGING		BIT(1)
+#define EC_BAT_CRITICAL		BIT(2) /* Low Battery Level */
+#define EC_BAT_FULL		BIT(3)
+
+/* -------------------------------------------------------------------------- */
+/* Word Data Reg */
+
+/* 0x5A: ?
+ * 0x5C: ?
+ * 0x5E: ?
+ * 0X60: ?
+ * 0x84: ?
+ */
+
+#define EC_BAT_STATUS_START	0x90
+#define EC_BAT_PERCENTAGE	0x90
+#define EC_BAT_VOLTAGE		0x92
+#define EC_BAT_CAPACITY		0x94
+#define EC_BAT_FULL_CAPACITY	0x96
+/* 0x98: ? */
+#define EC_BAT_CURRENT		0x9A
+/* 0x9C: ? */
+
+#define EC_BAT_INFO_START	0xA0
+/* 0xA0: POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT? */
+#define EC_BAT_DESIGN_CAPACITY	0xA2
+#define EC_BAT_DESIGN_VOLTAGE	0xA4
+#define EC_BAT_SERIAL_NUMBER	0xA6
+#define EC_BAT_CYCLE_COUNT	0xAA
+
+/* -------------------------------------------------------------------------- */
+/* Battery Event ID */
+
+#define EC_EVENT_BAT_A0		0xA0
+#define EC_EVENT_BAT_A1		0xA1
+#define EC_EVENT_BAT_A2		0xA2
+#define EC_EVENT_BAT_A3		0xA3
+#define EC_EVENT_BAT_B1		0xB1
+/* EVENT B1 A0 A1 repeat about every 1s 2s 3s respectively */
+
+/* ACPI _BIX field, Min sampling time, the duration between two _BST */
+#define CACHE_TIME		2000 /* cache time in milliseconds */
+
+#define MILLI_TO_MICRO		1000
+
+#define SMART_CHARGE_MODE	0
+#define SMART_CHARGE_DELAY	1
+#define SMART_CHARGE_START	2
+#define SMART_CHARGE_END	3
+
+#define NO_DELAY_MODE	1
+#define DELAY_MODE	4
+
+struct gaokun_psy_bat_status {
+	__le16 percentage_now;	/* 0x90 */
+	__le16 voltage_now;
+	__le16 capacity_now;
+	__le16 full_capacity;
+	__le16 unknown1;
+	__le16 rate_now;
+	__le16 unknown2;	/* 0x9C */
+} __packed;
+
+struct gaokun_psy_bat_info {
+	__le16 unknown3;	/* 0xA0 */
+	__le16 design_capacity;
+	__le16 design_voltage;
+	__le16 serial_number;
+	__le16 padding2;
+	__le16 cycle_count;	/* 0xAA */
+} __packed;
+
+struct gaokun_psy {
+	struct gaokun_ec *ec;
+	struct device *dev;
+	struct notifier_block nb;
+
+	struct power_supply *bat_psy;
+	struct power_supply *adp_psy;
+
+	unsigned long update_time;
+	struct gaokun_psy_bat_status status;
+	struct gaokun_psy_bat_info info;
+
+	char battery_model[0x10]; /* HB30A8P9ECW-22T, the real one is XXX-22A */
+	char battery_serial[0x10];
+	char battery_vendor[0x10];
+
+	int charge_now;
+	int online;
+	int bat_present;
+};
+
+/* -------------------------------------------------------------------------- */
+/* Adapter */
+
+static int gaokun_psy_get_adp_status(struct gaokun_psy *ecbat)
+{
+	/* _PSR */
+	int ret;
+	u8 online;
+
+	ret = gaokun_ec_psy_read_byte(ecbat->ec, EC_ADP_STATUS, &online);
+	if (ret)
+		return ret;
+
+	ecbat->online = !!(online & EC_AC_STATUS);
+
+	return 0;
+}
+
+static int gaokun_psy_get_adp_property(struct power_supply *psy,
+				       enum power_supply_property psp,
+				       union power_supply_propval *val)
+{
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	int ret;
+
+	ret = gaokun_psy_get_adp_status(ecbat);
+	if (ret)
+		return ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = ecbat->online;
+		break;
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		val->intval = POWER_SUPPLY_USB_TYPE_C;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static enum power_supply_property gaokun_psy_adp_props[] = {
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_USB_TYPE,
+};
+
+static const struct power_supply_desc gaokun_psy_adp_desc = {
+	.name		= "gaokun-ec-adapter",
+	.type		= POWER_SUPPLY_TYPE_USB,
+	.usb_types	= BIT(POWER_SUPPLY_USB_TYPE_C),
+	.get_property	= gaokun_psy_get_adp_property,
+	.properties	= gaokun_psy_adp_props,
+	.num_properties	= ARRAY_SIZE(gaokun_psy_adp_props),
+};
+
+/* -------------------------------------------------------------------------- */
+/* Battery */
+
+static inline void gaokun_psy_get_bat_present(struct gaokun_psy *ecbat)
+{
+	int ret;
+	u8 present;
+
+	/* Some kind of initialization */
+	gaokun_ec_write(ecbat->ec, (u8 []){0x02, 0xB2, 1, 0x90});
+
+	ret = gaokun_ec_psy_read_byte(ecbat->ec, EC_ADP_STATUS, &present);
+
+	ecbat->bat_present = ret ? false : !!(present & EC_BAT_PRESENT);
+}
+
+static inline int gaokun_psy_bat_present(struct gaokun_psy *ecbat)
+{
+	return ecbat->bat_present;
+}
+
+static int gaokun_psy_get_bat_info(struct gaokun_psy *ecbat)
+{
+	/* _BIX */
+	if (!gaokun_psy_bat_present(ecbat))
+		return 0;
+
+	return gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_INFO_START,
+					sizeof(ecbat->info), (u8 *)&ecbat->info);
+}
+
+static void gaokun_psy_update_bat_charge(struct gaokun_psy *ecbat)
+{
+	u8 charge;
+
+	gaokun_ec_psy_read_byte(ecbat->ec, EC_BAT_STATUS, &charge);
+
+	switch (charge) {
+	case EC_BAT_CHARGING:
+		ecbat->charge_now = POWER_SUPPLY_STATUS_CHARGING;
+		break;
+	case EC_BAT_DISCHARGING:
+		ecbat->charge_now = POWER_SUPPLY_STATUS_DISCHARGING;
+		break;
+	case EC_BAT_FULL:
+		ecbat->charge_now = POWER_SUPPLY_STATUS_FULL;
+		break;
+	default:
+		dev_warn(ecbat->dev, "unknown charge state %d\n", charge);
+	}
+}
+
+static int gaokun_psy_get_bat_status(struct gaokun_psy *ecbat)
+{
+	/* _BST */
+	int ret;
+
+	if (time_before(jiffies, ecbat->update_time +
+			msecs_to_jiffies(CACHE_TIME)))
+		return 0;
+
+	gaokun_psy_update_bat_charge(ecbat);
+	ret = gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_STATUS_START,
+				       sizeof(ecbat->status), (u8 *)&ecbat->status);
+
+	ecbat->update_time = jiffies;
+
+	return ret;
+}
+
+static void gaokun_psy_init(struct gaokun_psy *ecbat)
+{
+	gaokun_psy_get_bat_present(ecbat);
+	if (!gaokun_psy_bat_present(ecbat))
+		return;
+
+	gaokun_psy_get_bat_info(ecbat);
+
+	snprintf(ecbat->battery_serial, sizeof(ecbat->battery_serial),
+		 "%d", le16_to_cpu(ecbat->info.serial_number));
+
+	gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_VENDOR,
+				 sizeof(ecbat->battery_vendor) - 1,
+				 ecbat->battery_vendor);
+
+	gaokun_ec_psy_multi_read(ecbat->ec, EC_BAT_MODEL,
+				 sizeof(ecbat->battery_model) - 1,
+				 ecbat->battery_model);
+
+	ecbat->battery_model[14] = 'A'; /* FIX UP */
+}
+
+static int gaokun_psy_get_bat_property(struct power_supply *psy,
+				       enum power_supply_property psp,
+				       union power_supply_propval *val)
+{
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	u8 buf[GAOKUN_SMART_CHARGE_DATA_SIZE];
+	int ret;
+
+	if (gaokun_psy_bat_present(ecbat))
+		gaokun_psy_get_bat_status(ecbat);
+	else if (psp != POWER_SUPPLY_PROP_PRESENT)
+		return -ENODEV;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		val->intval = ecbat->charge_now;
+		break;
+
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = ecbat->bat_present;
+		break;
+
+	case POWER_SUPPLY_PROP_TECHNOLOGY:
+		val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
+		break;
+
+	case POWER_SUPPLY_PROP_CYCLE_COUNT:
+		val->intval = le16_to_cpu(ecbat->info.cycle_count);
+		break;
+
+	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+		val->intval = le16_to_cpu(ecbat->info.design_voltage) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		val->intval = le16_to_cpu(ecbat->status.voltage_now) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_CURRENT_NOW:
+		val->intval = (s16)le16_to_cpu(ecbat->status.rate_now) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
+		val->intval = le16_to_cpu(ecbat->info.design_capacity) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_CHARGE_FULL:
+		val->intval = le16_to_cpu(ecbat->status.full_capacity) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_CHARGE_NOW:
+		val->intval = le16_to_cpu(ecbat->status.capacity_now) * MILLI_TO_MICRO;
+		break;
+
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+		ret = gaokun_ec_psy_get_smart_charge(ecbat->ec, buf);
+		if (ret)
+			return ret;
+
+		if (psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD)
+			val->intval = buf[SMART_CHARGE_START];
+		else
+			val->intval = buf[SMART_CHARGE_END];
+		break;
+
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = le16_to_cpu(ecbat->status.percentage_now);
+		break;
+
+	case POWER_SUPPLY_PROP_MODEL_NAME:
+		val->strval = ecbat->battery_model;
+		break;
+
+	case POWER_SUPPLY_PROP_MANUFACTURER:
+		val->strval = ecbat->battery_vendor;
+		break;
+
+	case POWER_SUPPLY_PROP_SERIAL_NUMBER:
+		val->strval = ecbat->battery_serial;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int gaokun_psy_set_bat_property(struct power_supply *psy,
+				       enum power_supply_property psp,
+				       const union power_supply_propval *val)
+{
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	u8 buf[GAOKUN_SMART_CHARGE_DATA_SIZE];
+	int ret;
+
+	if (!gaokun_psy_bat_present(ecbat))
+		return -ENODEV;
+
+	ret = gaokun_ec_psy_get_smart_charge(ecbat->ec, buf);
+	if (ret)
+		return ret;
+
+	switch (psp) {
+	/*
+	 * Resetting another thershold makes single thersold setting more likely
+	 * to succeed. But setting start = end makes thing strange(failure).
+	 */
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD:
+		buf[SMART_CHARGE_START] = val->intval;
+		if (buf[SMART_CHARGE_START] > buf[SMART_CHARGE_END])
+			buf[SMART_CHARGE_END] = buf[SMART_CHARGE_START] + 1;
+		return gaokun_ec_psy_set_smart_charge(ecbat->ec, buf);
+
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
+		buf[SMART_CHARGE_END] = val->intval;
+		if (buf[SMART_CHARGE_END] < buf[SMART_CHARGE_START])
+			buf[SMART_CHARGE_START] = buf[SMART_CHARGE_END] - 1;
+		return gaokun_ec_psy_set_smart_charge(ecbat->ec, buf);
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int gaokun_psy_is_bat_property_writeable(struct power_supply *psy,
+						enum power_supply_property psp)
+{
+	return psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD ||
+	       psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD;
+}
+
+static enum power_supply_property gaokun_psy_bat_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_CYCLE_COUNT,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+	POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD,
+	POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_MODEL_NAME,
+	POWER_SUPPLY_PROP_MANUFACTURER,
+	POWER_SUPPLY_PROP_SERIAL_NUMBER,
+};
+
+static const struct power_supply_desc gaokun_psy_bat_desc = {
+	.name			= "gaokun-ec-battery",
+	.type			= POWER_SUPPLY_TYPE_BATTERY,
+	.get_property		= gaokun_psy_get_bat_property,
+	.set_property		= gaokun_psy_set_bat_property,
+	.property_is_writeable	= gaokun_psy_is_bat_property_writeable,
+	.properties		= gaokun_psy_bat_props,
+	.num_properties		= ARRAY_SIZE(gaokun_psy_bat_props),
+};
+
+/* -------------------------------------------------------------------------- */
+/* Sysfs */
+
+/*
+ * Note that, HUAWEI calls them SBAC/GBAC and SBCM/GBCM in DSDT, they are likely
+ * Set/Get Battery Adaptive Charging and Set/Get Battery Charging Mode.
+ */
+
+/* battery adaptive charge */
+static ssize_t battery_adaptive_charge_show(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	int ret;
+	bool on;
+
+	ret = gaokun_ec_psy_get_smart_charge_enable(ecbat->ec, &on);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%d\n", on);
+}
+
+static ssize_t battery_adaptive_charge_store(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t size)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	int ret;
+	bool on;
+
+	if (kstrtobool(buf, &on))
+		return -EINVAL;
+
+	ret = gaokun_ec_psy_set_smart_charge_enable(ecbat->ec, on);
+	if (ret)
+		return ret;
+
+	return size;
+}
+
+static DEVICE_ATTR_RW(battery_adaptive_charge);
+
+static inline int get_charge_delay(u8 buf[GAOKUN_SMART_CHARGE_DATA_SIZE])
+{
+	return buf[SMART_CHARGE_MODE] == NO_DELAY_MODE ? 0 : buf[SMART_CHARGE_DELAY];
+}
+
+static inline void
+set_charge_delay(u8 buf[GAOKUN_SMART_CHARGE_DATA_SIZE], u8 delay)
+{
+	if (delay) {
+		buf[SMART_CHARGE_DELAY] = delay;
+		buf[SMART_CHARGE_MODE] = DELAY_MODE;
+	} else {
+		 /* No writing zero, there is a specific mode for it. */
+		buf[SMART_CHARGE_MODE] = NO_DELAY_MODE;
+	}
+}
+
+/* Smart charge */
+static ssize_t smart_charge_delay_show(struct device *dev,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	u8 bf[GAOKUN_SMART_CHARGE_DATA_SIZE];
+	int ret;
+
+	ret = gaokun_ec_psy_get_smart_charge(ecbat->ec, bf);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%d\n", get_charge_delay(bf));
+}
+
+static ssize_t smart_charge_delay_store(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t size)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct gaokun_psy *ecbat = power_supply_get_drvdata(psy);
+	u8 bf[GAOKUN_SMART_CHARGE_DATA_SIZE];
+	u8 delay;
+	int ret;
+
+	if (kstrtou8(buf, 10, &delay))
+		return -EINVAL;
+
+	ret = gaokun_ec_psy_get_smart_charge(ecbat->ec, bf);
+	if (ret)
+		return ret;
+
+	set_charge_delay(bf, delay);
+
+	ret = gaokun_ec_psy_set_smart_charge(ecbat->ec, bf);
+	if (ret)
+		return ret;
+
+	return size;
+}
+
+static DEVICE_ATTR_RW(smart_charge_delay);
+
+static struct attribute *gaokun_psy_features_attrs[] = {
+	&dev_attr_battery_adaptive_charge.attr,
+	&dev_attr_smart_charge_delay.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(gaokun_psy_features);
+
+static int gaokun_psy_notify(struct notifier_block *nb,
+			     unsigned long action, void *data)
+{
+	struct gaokun_psy *ecbat = container_of(nb, struct gaokun_psy, nb);
+
+	switch (action) {
+	case EC_EVENT_BAT_A2:
+	case EC_EVENT_BAT_B1:
+		gaokun_psy_get_bat_info(ecbat);
+		return NOTIFY_OK;
+
+	case EC_EVENT_BAT_A0:
+		gaokun_psy_get_adp_status(ecbat);
+		power_supply_changed(ecbat->adp_psy);
+		msleep(10);
+		fallthrough;
+
+	case EC_EVENT_BAT_A1:
+	case EC_EVENT_BAT_A3:
+		if (action == EC_EVENT_BAT_A3) {
+			gaokun_psy_get_bat_info(ecbat);
+			msleep(100);
+		}
+		gaokun_psy_get_bat_status(ecbat);
+		power_supply_changed(ecbat->bat_psy);
+		return NOTIFY_OK;
+
+	default:
+		return NOTIFY_DONE;
+	}
+}
+
+static int gaokun_psy_probe(struct auxiliary_device *adev,
+			    const struct auxiliary_device_id *id)
+{
+	struct gaokun_ec *ec = adev->dev.platform_data;
+	struct power_supply_config psy_cfg = {};
+	struct device *dev = &adev->dev;
+	struct gaokun_psy *ecbat;
+
+	ecbat = devm_kzalloc(&adev->dev, sizeof(*ecbat), GFP_KERNEL);
+	if (!ecbat)
+		return -ENOMEM;
+
+	ecbat->ec = ec;
+	ecbat->dev = dev;
+	ecbat->nb.notifier_call = gaokun_psy_notify;
+
+	auxiliary_set_drvdata(adev, ecbat);
+
+	psy_cfg.drv_data = ecbat;
+	ecbat->adp_psy = devm_power_supply_register(dev, &gaokun_psy_adp_desc,
+						    &psy_cfg);
+	if (IS_ERR(ecbat->adp_psy))
+		return dev_err_probe(dev, PTR_ERR(ecbat->adp_psy),
+				     "Failed to register AC power supply\n");
+
+	psy_cfg.supplied_to = (char **)&gaokun_psy_bat_desc.name;
+	psy_cfg.num_supplicants = 1;
+	psy_cfg.no_wakeup_source = true;
+	psy_cfg.attr_grp = gaokun_psy_features_groups;
+	ecbat->bat_psy = devm_power_supply_register(dev, &gaokun_psy_bat_desc,
+						    &psy_cfg);
+	if (IS_ERR(ecbat->bat_psy))
+		return dev_err_probe(dev, PTR_ERR(ecbat->bat_psy),
+				     "Failed to register battery power supply\n");
+	gaokun_psy_init(ecbat);
+
+	return gaokun_ec_register_notify(ec, &ecbat->nb);
+}
+
+static void gaokun_psy_remove(struct auxiliary_device *adev)
+{
+	struct gaokun_psy *ecbat = auxiliary_get_drvdata(adev);
+
+	gaokun_ec_unregister_notify(ecbat->ec, &ecbat->nb);
+}
+
+static const struct auxiliary_device_id gaokun_psy_id_table[] = {
+	{ .name = GAOKUN_MOD_NAME "." GAOKUN_DEV_PSY, },
+	{}
+};
+MODULE_DEVICE_TABLE(auxiliary, gaokun_psy_id_table);
+
+static struct auxiliary_driver gaokun_psy_driver = {
+	.name = GAOKUN_DEV_PSY,
+	.id_table = gaokun_psy_id_table,
+	.probe = gaokun_psy_probe,
+	.remove = gaokun_psy_remove,
+};
+
+module_auxiliary_driver(gaokun_psy_driver);
+
+MODULE_DESCRIPTION("HUAWEI Matebook E Go psy driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c
index 51310f6e4803..c1640bc6accd 100644
--- a/drivers/power/supply/max17040_battery.c
+++ b/drivers/power/supply/max17040_battery.c
@@ -410,8 +410,9 @@ static int max17040_get_property(struct power_supply *psy,
 		if (!chip->channel_temp)
 			return -ENODATA;
 
-		iio_read_channel_processed_scale(chip->channel_temp,
-						 &val->intval, 10);
+		iio_read_channel_processed(chip->channel_temp, &val->intval);
+		val->intval /= 100; /* Convert from milli- to deci-degree */
+
 		break;
 	default:
 		return -EINVAL;
diff --git a/drivers/power/supply/max77705_charger.c b/drivers/power/supply/max77705_charger.c
index eec5e9ef795e..329b430d0e50 100644
--- a/drivers/power/supply/max77705_charger.c
+++ b/drivers/power/supply/max77705_charger.c
@@ -545,20 +545,28 @@ static int max77705_charger_probe(struct i2c_client *i2c)
 		return dev_err_probe(dev, ret, "failed to add irq chip\n");
 
 	chg->wqueue = create_singlethread_workqueue(dev_name(dev));
-	if (IS_ERR(chg->wqueue))
-		return dev_err_probe(dev, PTR_ERR(chg->wqueue), "failed to create workqueue\n");
+	if (!chg->wqueue)
+		return dev_err_probe(dev, -ENOMEM, "failed to create workqueue\n");
 
 	ret = devm_work_autocancel(dev, &chg->chgin_work, max77705_chgin_isr_work);
-	if (ret)
-		return dev_err_probe(dev, ret, "failed to initialize interrupt work\n");
+	if (ret) {
+		dev_err_probe(dev, ret, "failed to initialize interrupt work\n");
+		goto destroy_wq;
+	}
 
 	max77705_charger_initialize(chg);
 
 	ret = max77705_charger_enable(chg);
-	if (ret)
-		return dev_err_probe(dev, ret, "failed to enable charge\n");
+	if (ret) {
+		dev_err_probe(dev, ret, "failed to enable charge\n");
+		goto destroy_wq;
+	}
 
 	return devm_add_action_or_reset(dev, max77705_charger_disable, chg);
+
+destroy_wq:
+	destroy_workqueue(chg->wqueue);
+	return ret;
 }
 
 static const struct of_device_id max77705_charger_of_match[] = {
diff --git a/drivers/power/supply/max8971_charger.c b/drivers/power/supply/max8971_charger.c
new file mode 100644
index 000000000000..26416d26f235
--- /dev/null
+++ b/drivers/power/supply/max8971_charger.c
@@ -0,0 +1,752 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/devm-helpers.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/extcon.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of_graph.h>
+#include <linux/property.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+
+#define MAX8971_REG_CHGINT		0x0f
+#define   MAX8971_REG_CHG_RST		BIT(0)
+#define MAX8971_REG_CHGINT_MASK		0x01
+#define   MAX8971_AICL_MASK		BIT(7)
+#define MAX8971_REG_CHG_STAT		0x02
+#define   MAX8971_CHG_MASK		BIT(3)
+#define MAX8971_REG_DETAILS1		0x03
+#define MAX8971_REG_DETAILS2		0x04
+#define MAX8971_REG_CHGCNTL1		0x05
+#define MAX8971_REG_FCHGCRNT		0x06
+#define MAX8971_REG_DCCRNT		0x07
+#define   MAX8971_CHGRSTRT_MASK		BIT(6)
+#define MAX8971_REG_TOPOFF		0x08
+#define MAX8971_REG_TEMPREG		0x09
+#define MAX8971_REG_PROTCMD		0x0a
+#define   MAX8971_CHGPROT_LOCKED	0x00
+#define   MAX8971_CHGPROT_UNLOCKED	0x03
+
+#define MAX8971_FCHGT_DEFAULT		2
+#define MAX8971_TOPOFFT_DEFAULT		3
+
+static const char *max8971_manufacturer	= "Maxim Integrated";
+static const char *max8971_model	= "MAX8971";
+
+enum max8971_charging_state {
+	MAX8971_CHARGING_DEAD_BATTERY,
+	MAX8971_CHARGING_PREQUALIFICATION,
+	MAX8971_CHARGING_FAST_CONST_CURRENT,
+	MAX8971_CHARGING_FAST_CONST_VOLTAGE,
+	MAX8971_CHARGING_TOP_OFF,
+	MAX8971_CHARGING_DONE,
+	MAX8971_CHARGING_TIMER_FAULT,
+	MAX8971_CHARGING_SUSPENDED_THERMAL,
+	MAX8971_CHARGING_OFF,
+	MAX8971_CHARGING_THERMAL_LOOP,
+};
+
+enum max8971_health_state {
+	MAX8971_HEALTH_UNKNOWN,
+	MAX8971_HEALTH_COLD,
+	MAX8971_HEALTH_COOL,
+	MAX8971_HEALTH_WARM,
+	MAX8971_HEALTH_HOT,
+	MAX8971_HEALTH_OVERHEAT,
+};
+
+/* Fast-Charge current limit, 250..1550 mA, 50 mA steps */
+#define MAX8971_CHG_CC_STEP			  50000U
+#define MAX8971_CHG_CC_MIN			 250000U
+#define MAX8971_CHG_CC_MAX			1550000U
+
+/* Input current limit, 250..1500 mA, 25 mA steps */
+#define MAX8971_DCILMT_STEP			  25000U
+#define MAX8971_DCILMT_MIN			 250000U
+#define MAX8971_DCILMT_MAX			1500000U
+
+enum max8971_field_idx {
+	THM_DTLS,		/* DETAILS1 */
+	BAT_DTLS, CHG_DTLS,	/* DETAILS2 */
+	CHG_CC, FCHG_T,		/* FCHGCRNT */
+	DCI_LMT,		/* DCCRNT */
+	TOPOFF_T, TOPOFF_S,	/* TOPOFF */
+	CPROT,			/* PROTCMD */
+	MAX8971_N_REGMAP_FIELDS
+};
+
+static const struct reg_field max8971_reg_field[MAX8971_N_REGMAP_FIELDS] = {
+	[THM_DTLS] = REG_FIELD(MAX8971_REG_DETAILS1, 0, 2),
+	[BAT_DTLS] = REG_FIELD(MAX8971_REG_DETAILS2, 4, 5),
+	[CHG_DTLS] = REG_FIELD(MAX8971_REG_DETAILS2, 0, 3),
+	[CHG_CC]   = REG_FIELD(MAX8971_REG_FCHGCRNT, 0, 4),
+	[FCHG_T]   = REG_FIELD(MAX8971_REG_FCHGCRNT, 5, 7),
+	[DCI_LMT]  = REG_FIELD(MAX8971_REG_DCCRNT,   0, 5),
+	[TOPOFF_T] = REG_FIELD(MAX8971_REG_TOPOFF,   5, 7),
+	[TOPOFF_S] = REG_FIELD(MAX8971_REG_TOPOFF,   2, 3),
+	[CPROT]    = REG_FIELD(MAX8971_REG_PROTCMD,  2, 3),
+};
+
+static const struct regmap_config max8971_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = MAX8971_REG_CHGINT,
+};
+
+struct max8971_data {
+	struct device *dev;
+	struct power_supply *psy_mains;
+
+	struct extcon_dev *edev;
+	struct notifier_block extcon_nb;
+	struct delayed_work extcon_work;
+
+	struct regmap *regmap;
+	struct regmap_field *rfield[MAX8971_N_REGMAP_FIELDS];
+
+	enum power_supply_usb_type usb_type;
+
+	u32 fchgt;
+	u32 tofft;
+	u32 toffs;
+
+	bool present;
+};
+
+static int max8971_get_status(struct max8971_data *priv, int *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[CHG_DTLS], &regval);
+	if (err)
+		return err;
+
+	switch (regval) {
+	case MAX8971_CHARGING_DEAD_BATTERY:
+	case MAX8971_CHARGING_PREQUALIFICATION:
+	case MAX8971_CHARGING_FAST_CONST_CURRENT:
+	case MAX8971_CHARGING_FAST_CONST_VOLTAGE:
+	case MAX8971_CHARGING_TOP_OFF:
+	case MAX8971_CHARGING_THERMAL_LOOP:
+		*val = POWER_SUPPLY_STATUS_CHARGING;
+		break;
+	case MAX8971_CHARGING_DONE:
+		*val = POWER_SUPPLY_STATUS_FULL;
+		break;
+	case MAX8971_CHARGING_TIMER_FAULT:
+		*val = POWER_SUPPLY_STATUS_NOT_CHARGING;
+		break;
+	case MAX8971_CHARGING_OFF:
+	case MAX8971_CHARGING_SUSPENDED_THERMAL:
+		*val = POWER_SUPPLY_STATUS_DISCHARGING;
+		break;
+	default:
+		*val = POWER_SUPPLY_STATUS_UNKNOWN;
+	}
+
+	return 0;
+}
+
+static int max8971_get_charge_type(struct max8971_data *priv, int *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[CHG_DTLS], &regval);
+	if (err)
+		return err;
+
+	switch (regval) {
+	case MAX8971_CHARGING_DEAD_BATTERY:
+	case MAX8971_CHARGING_PREQUALIFICATION:
+		*val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		break;
+	case MAX8971_CHARGING_FAST_CONST_CURRENT:
+	case MAX8971_CHARGING_FAST_CONST_VOLTAGE:
+		*val = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		break;
+	case MAX8971_CHARGING_TOP_OFF:
+	case MAX8971_CHARGING_THERMAL_LOOP:
+		*val = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
+		break;
+	case MAX8971_CHARGING_DONE:
+	case MAX8971_CHARGING_TIMER_FAULT:
+	case MAX8971_CHARGING_SUSPENDED_THERMAL:
+	case MAX8971_CHARGING_OFF:
+		*val = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
+	default:
+		*val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+	}
+
+	return 0;
+}
+
+static int max8971_get_health(struct max8971_data *priv, int *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[THM_DTLS], &regval);
+	if (err)
+		return err;
+
+	switch (regval) {
+	case MAX8971_HEALTH_COLD:
+		*val = POWER_SUPPLY_HEALTH_COLD;
+		break;
+	case MAX8971_HEALTH_COOL:
+		*val = POWER_SUPPLY_HEALTH_COOL;
+		break;
+	case MAX8971_HEALTH_WARM:
+		*val = POWER_SUPPLY_HEALTH_GOOD;
+		break;
+	case MAX8971_HEALTH_HOT:
+		*val = POWER_SUPPLY_HEALTH_HOT;
+		break;
+	case MAX8971_HEALTH_OVERHEAT:
+		*val = POWER_SUPPLY_HEALTH_OVERHEAT;
+		break;
+	case MAX8971_HEALTH_UNKNOWN:
+	default:
+		*val = POWER_SUPPLY_HEALTH_UNKNOWN;
+	}
+
+	return 0;
+}
+
+static int max8971_get_online(struct max8971_data *priv, int *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_read(priv->regmap, MAX8971_REG_CHG_STAT, &regval);
+	if (err)
+		return err;
+
+	if (priv->present)
+		/* CHG_OK bit is 0 when charger is online */
+		*val = !(regval & MAX8971_CHG_MASK);
+	else
+		*val = priv->present;
+
+	return 0;
+}
+
+static int max8971_get_integer(struct max8971_data *priv, enum max8971_field_idx fidx,
+			       u32 clamp_min, u32 clamp_max, u32 mult, int *val)
+{
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[fidx], &regval);
+	if (err)
+		return err;
+
+	*val = clamp_val(regval * mult, clamp_min, clamp_max);
+
+	return 0;
+}
+
+static int max8971_set_integer(struct max8971_data *priv, enum max8971_field_idx fidx,
+			       u32 clamp_min, u32 clamp_max, u32 div, int val)
+{
+	u32 regval;
+
+	regval = clamp_val(val, clamp_min, clamp_max) / div;
+
+	return regmap_field_write(priv->rfield[fidx], regval);
+}
+
+static int max8971_get_property(struct power_supply *psy, enum power_supply_property psp,
+				union power_supply_propval *val)
+{
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	int err = 0;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_STATUS:
+		err = max8971_get_status(priv, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		err = max8971_get_charge_type(priv, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		val->intval = priv->usb_type;
+		break;
+	case POWER_SUPPLY_PROP_HEALTH:
+		err = max8971_get_health(priv, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_ONLINE:
+		err = max8971_get_online(priv, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_PRESENT:
+		val->intval = priv->present;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
+		val->intval = MAX8971_CHG_CC_MAX;
+		break;
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+		err = max8971_get_integer(priv, CHG_CC, MAX8971_CHG_CC_MIN, MAX8971_CHG_CC_MAX,
+					  MAX8971_CHG_CC_STEP, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		err = max8971_get_integer(priv, DCI_LMT, MAX8971_DCILMT_MIN, MAX8971_DCILMT_MAX,
+					  MAX8971_DCILMT_STEP, &val->intval);
+		break;
+	case POWER_SUPPLY_PROP_MODEL_NAME:
+		val->strval = max8971_model;
+		break;
+	case POWER_SUPPLY_PROP_MANUFACTURER:
+		val->strval = max8971_manufacturer;
+		break;
+	default:
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+static int max8971_set_property(struct power_supply *psy, enum power_supply_property psp,
+				const union power_supply_propval *val)
+{
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	int err = 0;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+		err = max8971_set_integer(priv, CHG_CC, MAX8971_CHG_CC_MIN, MAX8971_CHG_CC_MAX,
+					  MAX8971_CHG_CC_STEP, val->intval);
+		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		err = max8971_set_integer(priv, DCI_LMT, MAX8971_DCILMT_MIN, MAX8971_DCILMT_MAX,
+					  MAX8971_DCILMT_STEP, val->intval);
+		break;
+	default:
+		err = -EINVAL;
+	}
+
+	return err;
+};
+
+static int max8971_property_is_writeable(struct power_supply *psy,
+					 enum power_supply_property psp)
+{
+	switch (psp) {
+	case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static enum power_supply_property max8971_properties[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
+	POWER_SUPPLY_PROP_USB_TYPE,
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
+	POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_MODEL_NAME,
+	POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
+static const struct power_supply_desc max8971_charger_desc = {
+	.name = "max8971-charger",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.usb_types = BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN) |
+		     BIT(POWER_SUPPLY_USB_TYPE_SDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_DCP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_CDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_ACA),
+	.properties = max8971_properties,
+	.num_properties = ARRAY_SIZE(max8971_properties),
+	.get_property = max8971_get_property,
+	.set_property = max8971_set_property,
+	.property_is_writeable = max8971_property_is_writeable,
+};
+
+static void max8971_update_config(struct max8971_data *priv)
+{
+	regmap_field_write(priv->rfield[CPROT], MAX8971_CHGPROT_UNLOCKED);
+
+	if (priv->fchgt != MAX8971_FCHGT_DEFAULT)
+		regmap_field_write(priv->rfield[FCHG_T], priv->fchgt);
+
+	regmap_write_bits(priv->regmap, MAX8971_REG_DCCRNT, MAX8971_CHGRSTRT_MASK,
+			  MAX8971_CHGRSTRT_MASK);
+
+	if (priv->tofft != MAX8971_TOPOFFT_DEFAULT)
+		regmap_field_write(priv->rfield[TOPOFF_T], priv->tofft);
+
+	if (priv->toffs)
+		regmap_field_write(priv->rfield[TOPOFF_S], priv->toffs);
+
+	regmap_field_write(priv->rfield[CPROT], MAX8971_CHGPROT_LOCKED);
+}
+
+static ssize_t fast_charge_timer_show(struct device *dev, struct device_attribute *attr,
+				      char *buf)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[FCHG_T], &regval);
+	if (err)
+		return err;
+
+	switch (regval) {
+	case 0x1 ... 0x7:
+		/* Time is off by 3 hours comparing to value */
+		regval += 3;
+		break;
+	case 0x0:
+	default:
+		regval = 0;
+		break;
+	}
+
+	return sysfs_emit(buf, "%u\n", regval);
+}
+
+static ssize_t fast_charge_timer_store(struct device *dev, struct device_attribute *attr,
+				       const char *buf, size_t count)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	unsigned long hours;
+	int val, err;
+
+	err = kstrtoul(buf, 10, &hours);
+	if (err)
+		return err;
+
+	val = hours - 3;
+	if (val <= 0 || val > 7)
+		priv->fchgt = 0;
+	else
+		priv->fchgt = val;
+
+	max8971_update_config(priv);
+
+	return count;
+}
+
+static ssize_t top_off_threshold_current_show(struct device *dev,
+					      struct device_attribute *attr,
+					      char *buf)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	u32 regval, val;
+	int err;
+
+	err = regmap_field_read(priv->rfield[TOPOFF_S], &regval);
+	if (err)
+		return err;
+
+	/* 50uA start with 50uA step */
+	val = regval * 50 + 50;
+	val *= 1000;
+
+	return sysfs_emit(buf, "%u\n", val);
+}
+
+static ssize_t top_off_threshold_current_store(struct device *dev,
+					       struct device_attribute *attr,
+					       const char *buf, size_t count)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	unsigned long uamp;
+	int err;
+
+	err = kstrtoul(buf, 10, &uamp);
+	if (err)
+		return err;
+
+	if (uamp < 50000 || uamp > 200000)
+		return -EINVAL;
+
+	priv->toffs = uamp / 50000 - 1;
+
+	max8971_update_config(priv);
+
+	return count;
+}
+
+static ssize_t top_off_timer_show(struct device *dev, struct device_attribute *attr,
+				  char *buf)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	u32 regval;
+	int err;
+
+	err = regmap_field_read(priv->rfield[TOPOFF_T], &regval);
+	if (err)
+		return err;
+
+	/* 10 min intervals */
+	regval *= 10;
+
+	return sysfs_emit(buf, "%u\n", regval);
+}
+
+static ssize_t top_off_timer_store(struct device *dev, struct device_attribute *attr,
+				   const char *buf, size_t count)
+{
+	struct power_supply *psy = to_power_supply(dev);
+	struct max8971_data *priv = power_supply_get_drvdata(psy);
+	unsigned long minutes;
+	int err;
+
+	err = kstrtoul(buf, 10, &minutes);
+	if (err)
+		return err;
+
+	if (minutes > 70)
+		return -EINVAL;
+
+	priv->tofft = minutes / 10;
+
+	max8971_update_config(priv);
+
+	return count;
+}
+
+static DEVICE_ATTR_RW(fast_charge_timer);
+static DEVICE_ATTR_RW(top_off_threshold_current);
+static DEVICE_ATTR_RW(top_off_timer);
+
+static struct attribute *max8971_attrs[] = {
+	&dev_attr_fast_charge_timer.attr,
+	&dev_attr_top_off_threshold_current.attr,
+	&dev_attr_top_off_timer.attr,
+	NULL
+};
+ATTRIBUTE_GROUPS(max8971);
+
+static void max8971_extcon_evt_worker(struct work_struct *work)
+{
+	struct max8971_data *priv =
+		container_of(work, struct max8971_data, extcon_work.work);
+	struct device *dev = priv->dev;
+	struct extcon_dev *edev = priv->edev;
+	u32 chgcc, dcilmt;
+
+	if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) {
+		dev_dbg(dev, "USB SDP charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		chgcc = 500000;
+		dcilmt = 500000;
+	} else if (extcon_get_state(edev, EXTCON_USB) > 0) {
+		dev_dbg(dev, "USB charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		chgcc = 500000;
+		dcilmt = 500000;
+	} else if (extcon_get_state(edev, EXTCON_DISP_MHL) > 0) {
+		dev_dbg(dev, "MHL plug is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
+		chgcc = 500000;
+		dcilmt = 500000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) {
+		dev_dbg(dev, "USB DCP charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_DCP;
+		chgcc = 900000;
+		dcilmt = 1200000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_FAST) > 0) {
+		dev_dbg(dev, "USB FAST charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_ACA;
+		chgcc = 900000;
+		dcilmt = 1200000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_SLOW) > 0) {
+		dev_dbg(dev, "USB SLOW charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_ACA;
+		chgcc = 900000;
+		dcilmt = 1200000;
+	} else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) {
+		dev_dbg(dev, "USB CDP charger is connected\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_CDP;
+		chgcc = 900000;
+		dcilmt = 1200000;
+	} else {
+		dev_dbg(dev, "USB state is unknown\n");
+		priv->usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+		return;
+	}
+
+	regmap_field_write(priv->rfield[CPROT], MAX8971_CHGPROT_UNLOCKED);
+
+	max8971_set_integer(priv, CHG_CC, MAX8971_CHG_CC_MIN, MAX8971_CHG_CC_MAX,
+			    MAX8971_CHG_CC_STEP, chgcc);
+	max8971_set_integer(priv, DCI_LMT, MAX8971_DCILMT_MIN, MAX8971_DCILMT_MAX,
+			    MAX8971_DCILMT_STEP, dcilmt);
+
+	regmap_field_write(priv->rfield[CPROT], MAX8971_CHGPROT_LOCKED);
+}
+
+static int extcon_get_charger_type(struct notifier_block *nb,
+				   unsigned long state, void *data)
+{
+	struct max8971_data *priv =
+		container_of(nb, struct max8971_data, extcon_nb);
+	schedule_delayed_work(&priv->extcon_work, 0);
+
+	return NOTIFY_OK;
+}
+
+static irqreturn_t max8971_interrupt(int irq, void *dev_id)
+{
+	struct max8971_data *priv = dev_id;
+	struct device *dev = priv->dev;
+	int err, state;
+
+	err = regmap_read(priv->regmap, MAX8971_REG_CHGINT, &state);
+	if (err)
+		dev_err(dev, "interrupt reg read failed %d\n", err);
+
+	err = regmap_write_bits(priv->regmap, MAX8971_REG_CHGINT_MASK,
+				MAX8971_AICL_MASK, MAX8971_AICL_MASK);
+	if (err)
+		dev_err(dev, "failed to mask IRQ\n");
+
+	/* set presence prop */
+	priv->present = state & MAX8971_REG_CHG_RST;
+
+	/* on every plug chip resets to default */
+	if (priv->present)
+		max8971_update_config(priv);
+
+	/* update supply status */
+	power_supply_changed(priv->psy_mains);
+
+	return IRQ_HANDLED;
+}
+
+static int max8971_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct max8971_data *priv;
+	struct device_node *extcon;
+	struct power_supply_config cfg = { };
+	int err, i;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->dev = dev;
+	priv->usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+
+	i2c_set_clientdata(client, priv);
+
+	priv->regmap = devm_regmap_init_i2c(client, &max8971_regmap_config);
+	if (IS_ERR(priv->regmap))
+		return dev_err_probe(dev, PTR_ERR(priv->regmap), "cannot allocate regmap\n");
+
+	for (i = 0; i < MAX8971_N_REGMAP_FIELDS; i++) {
+		priv->rfield[i] = devm_regmap_field_alloc(dev, priv->regmap, max8971_reg_field[i]);
+		if (IS_ERR(priv->rfield[i]))
+			return dev_err_probe(dev, PTR_ERR(priv->rfield[i]),
+					     "cannot allocate regmap field\n");
+	}
+
+	cfg.attr_grp = max8971_groups;
+	cfg.drv_data = priv;
+	cfg.fwnode = dev_fwnode(dev);
+
+	priv->psy_mains = devm_power_supply_register(dev, &max8971_charger_desc, &cfg);
+	if (IS_ERR(priv->psy_mains))
+		return dev_err_probe(dev, PTR_ERR(priv->psy_mains),
+				     "failed to register mains supply\n");
+
+	err = regmap_write_bits(priv->regmap, MAX8971_REG_CHGINT_MASK, MAX8971_AICL_MASK,
+				MAX8971_AICL_MASK);
+	if (err)
+		return dev_err_probe(dev, err, "failed to mask IRQ\n");
+
+	err = devm_request_threaded_irq(dev, client->irq, NULL, &max8971_interrupt,
+					IRQF_ONESHOT | IRQF_SHARED, client->name, priv);
+	if (err)
+		return dev_err_probe(dev, err, "failed to register IRQ %d\n", client->irq);
+
+	extcon = of_graph_get_remote_node(dev->of_node, -1, -1);
+	if (!extcon)
+		return 0;
+
+	priv->edev = extcon_find_edev_by_node(extcon);
+	of_node_put(extcon);
+	if (IS_ERR(priv->edev))
+		return dev_err_probe(dev, PTR_ERR(priv->edev), "failed to find extcon\n");
+
+	err = devm_delayed_work_autocancel(dev, &priv->extcon_work,
+					   max8971_extcon_evt_worker);
+	if (err)
+		return dev_err_probe(dev, err, "failed to add extcon evt stop action\n");
+
+	priv->extcon_nb.notifier_call = extcon_get_charger_type;
+
+	err = devm_extcon_register_notifier_all(dev, priv->edev, &priv->extcon_nb);
+	if (err)
+		return dev_err_probe(dev, err, "failed to register notifier\n");
+
+	/* Initial configuration work with 1 sec delay */
+	schedule_delayed_work(&priv->extcon_work, msecs_to_jiffies(1000));
+
+	return 0;
+}
+
+static int __maybe_unused max8971_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max8971_data *priv = i2c_get_clientdata(client);
+
+	irq_wake_thread(client->irq, priv);
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(max8971_pm_ops, NULL, max8971_resume);
+
+static const struct of_device_id max8971_match_ids[] = {
+	{ .compatible = "maxim,max8971" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max8971_match_ids);
+
+static const struct i2c_device_id max8971_i2c_id[] = {
+	{ "max8971" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, max8971_i2c_id);
+
+static struct i2c_driver max8971_driver = {
+	.driver = {
+		.name = "max8971-charger",
+		.of_match_table = max8971_match_ids,
+		.pm = &max8971_pm_ops,
+	},
+	.probe = max8971_probe,
+	.id_table = max8971_i2c_id,
+};
+module_i2c_driver(max8971_driver);
+
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("MAX8971 Charger Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index 439dd0bf8644..a438f7983d4f 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -321,6 +321,27 @@ static ssize_t power_supply_show_charge_behaviour(struct device *dev,
 						  value->intval, buf);
 }
 
+static ssize_t power_supply_show_charge_types(struct device *dev,
+					      struct power_supply *psy,
+					      enum power_supply_charge_type current_type,
+					      char *buf)
+{
+	struct power_supply_ext_registration *reg;
+
+	scoped_guard(rwsem_read, &psy->extensions_sem) {
+		power_supply_for_each_extension(reg, psy) {
+			if (power_supply_ext_has_property(reg->ext,
+							  POWER_SUPPLY_PROP_CHARGE_TYPES))
+				return power_supply_charge_types_show(dev,
+						reg->ext->charge_types,
+						current_type, buf);
+		}
+	}
+
+	return power_supply_charge_types_show(dev, psy->desc->charge_types,
+						  current_type, buf);
+}
+
 static ssize_t power_supply_format_property(struct device *dev,
 					    bool uevent,
 					    struct device_attribute *attr,
@@ -365,7 +386,7 @@ static ssize_t power_supply_format_property(struct device *dev,
 	case POWER_SUPPLY_PROP_CHARGE_TYPES:
 		if (uevent) /* no possible values in uevents */
 			goto default_format;
-		ret = power_supply_charge_types_show(dev, psy->desc->charge_types,
+		ret = power_supply_show_charge_types(dev, psy,
 						     value.intval, buf);
 		break;
 	case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
diff --git a/drivers/power/supply/rk817_charger.c b/drivers/power/supply/rk817_charger.c
index 945c7720c4ae..1251022eb052 100644
--- a/drivers/power/supply/rk817_charger.c
+++ b/drivers/power/supply/rk817_charger.c
@@ -1088,7 +1088,7 @@ static int rk817_charger_probe(struct platform_device *pdev)
 	rk817_bat_calib_vol(charger);
 
 	pscfg.drv_data = charger;
-	pscfg.fwnode = node ? &node->fwnode : NULL;
+	pscfg.fwnode = &node->fwnode;
 
 	/*
 	 * Get sample resistor value. Note only values of 10000 or 20000
diff --git a/drivers/power/supply/rt9471.c b/drivers/power/supply/rt9471.c
index bd966abb4df5..e7f843f12c98 100644
--- a/drivers/power/supply/rt9471.c
+++ b/drivers/power/supply/rt9471.c
@@ -192,12 +192,12 @@ static const struct reg_field rt9471_reg_fields[F_MAX_FIELDS] = {
 };
 
 static const struct linear_range rt9471_chg_ranges[RT9471_MAX_RANGES] = {
-	[RT9471_RANGE_AICR] = { .min = 50000,	.min_sel = 1, .max_sel = 63, .step = 50000 },
-	[RT9471_RANGE_MIVR] = { .min = 3900000,	.min_sel = 0, .max_sel = 15, .step = 100000 },
-	[RT9471_RANGE_IPRE] = { .min = 50000,	.min_sel = 0, .max_sel = 15, .step = 50000 },
-	[RT9471_RANGE_VCHG] = { .min = 3900000,	.min_sel = 0, .max_sel = 80, .step = 10000 },
-	[RT9471_RANGE_ICHG] = { .min = 0,	.min_sel = 0, .max_sel = 63, .step = 50000 },
-	[RT9471_RANGE_IEOC] = { .min = 50000,	.min_sel = 0, .max_sel = 15, .step = 50000 },
+	[RT9471_RANGE_AICR] = LINEAR_RANGE(50000,	1, 63, 50000),
+	[RT9471_RANGE_MIVR] = LINEAR_RANGE(3900000,	0, 15, 100000),
+	[RT9471_RANGE_IPRE] = LINEAR_RANGE(50000,	0, 15, 50000),
+	[RT9471_RANGE_VCHG] = LINEAR_RANGE(3900000,	0, 80, 10000),
+	[RT9471_RANGE_ICHG] = LINEAR_RANGE(0,		0, 63, 50000),
+	[RT9471_RANGE_IEOC] = LINEAR_RANGE(50000,	0, 15, 50000),
 };
 
 static int rt9471_set_value_by_field_range(struct rt9471_chip *chip,
diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
index 2a975a110f48..b5f148081c51 100644
--- a/drivers/power/supply/test_power.c
+++ b/drivers/power/supply/test_power.c
@@ -37,6 +37,8 @@ static int battery_charge_counter	= -1000;
 static int battery_current		= -1600;
 static enum power_supply_charge_behaviour battery_charge_behaviour =
 	POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
+static enum power_supply_charge_type battery_charge_types =
+	POWER_SUPPLY_CHARGE_TYPE_STANDARD;
 static bool battery_extension;
 
 static bool module_initialized;
@@ -87,7 +89,7 @@ static int test_power_get_battery_property(struct power_supply *psy,
 		val->intval = battery_status;
 		break;
 	case POWER_SUPPLY_PROP_CHARGE_TYPE:
-		val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		val->intval = battery_charge_types;
 		break;
 	case POWER_SUPPLY_PROP_HEALTH:
 		val->intval = battery_health;
@@ -129,6 +131,9 @@ static int test_power_get_battery_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
 		val->intval = battery_charge_behaviour;
 		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPES:
+		val->intval = battery_charge_types;
+		break;
 	default:
 		pr_info("%s: some properties deliberately report errors.\n",
 			__func__);
@@ -140,7 +145,7 @@ static int test_power_get_battery_property(struct power_supply *psy,
 static int test_power_battery_property_is_writeable(struct power_supply *psy,
 						    enum power_supply_property psp)
 {
-	return psp == POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR;
+	return psp == POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR || psp == POWER_SUPPLY_PROP_CHARGE_TYPES;
 }
 
 static int test_power_set_battery_property(struct power_supply *psy,
@@ -156,6 +161,14 @@ static int test_power_set_battery_property(struct power_supply *psy,
 		}
 		battery_charge_behaviour = val->intval;
 		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPES:
+		if (val->intval < 0 ||
+		    val->intval >= BITS_PER_TYPE(typeof(psy->desc->charge_types)) ||
+		    !(BIT(val->intval) & psy->desc->charge_types)) {
+			return -EINVAL;
+		}
+		battery_charge_types = val->intval;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -188,6 +201,7 @@ static enum power_supply_property test_power_battery_props[] = {
 	POWER_SUPPLY_PROP_CURRENT_AVG,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 	POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
+	POWER_SUPPLY_PROP_CHARGE_TYPES,
 };
 
 static char *test_power_ac_supplied_to[] = {
@@ -215,6 +229,8 @@ static const struct power_supply_desc test_power_desc[] = {
 		.charge_behaviours = BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO)
 				   | BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)
 				   | BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE),
+		.charge_types = BIT(POWER_SUPPLY_CHARGE_TYPE_STANDARD)
+				   | BIT(POWER_SUPPLY_CHARGE_TYPE_LONGLIFE)
 	},
 	[TEST_USB] = {
 		.name = "test_usb",
diff --git a/drivers/power/supply/wm831x_power.c b/drivers/power/supply/wm831x_power.c
index 538055b29dec..6acdba7885ca 100644
--- a/drivers/power/supply/wm831x_power.c
+++ b/drivers/power/supply/wm831x_power.c
@@ -89,7 +89,7 @@ static int wm831x_wall_get_prop(struct power_supply *psy,
 	return ret;
 }
 
-static enum power_supply_property wm831x_wall_props[] = {
+static const enum power_supply_property wm831x_wall_props[] = {
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 };
@@ -120,7 +120,7 @@ static int wm831x_usb_get_prop(struct power_supply *psy,
 	return ret;
 }
 
-static enum power_supply_property wm831x_usb_props[] = {
+static const enum power_supply_property wm831x_usb_props[] = {
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 };
@@ -171,21 +171,21 @@ struct chg_map {
 	int reg_val;
 };
 
-static struct chg_map trickle_ilims[] = {
+static const struct chg_map trickle_ilims[] = {
 	{  50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT },
 	{ 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT },
 	{ 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT },
 	{ 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT },
 };
 
-static struct chg_map vsels[] = {
+static const struct chg_map vsels[] = {
 	{ 4050, 0 << WM831X_CHG_VSEL_SHIFT },
 	{ 4100, 1 << WM831X_CHG_VSEL_SHIFT },
 	{ 4150, 2 << WM831X_CHG_VSEL_SHIFT },
 	{ 4200, 3 << WM831X_CHG_VSEL_SHIFT },
 };
 
-static struct chg_map fast_ilims[] = {
+static const struct chg_map fast_ilims[] = {
 	{    0,  0 << WM831X_CHG_FAST_ILIM_SHIFT },
 	{   50,  1 << WM831X_CHG_FAST_ILIM_SHIFT },
 	{  100,  2 << WM831X_CHG_FAST_ILIM_SHIFT },
@@ -204,7 +204,7 @@ static struct chg_map fast_ilims[] = {
 	{ 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT },
 };
 
-static struct chg_map eoc_iterms[] = {
+static const struct chg_map eoc_iterms[] = {
 	{ 20, 0 << WM831X_CHG_ITERM_SHIFT },
 	{ 30, 1 << WM831X_CHG_ITERM_SHIFT },
 	{ 40, 2 << WM831X_CHG_ITERM_SHIFT },
@@ -215,7 +215,7 @@ static struct chg_map eoc_iterms[] = {
 	{ 90, 7 << WM831X_CHG_ITERM_SHIFT },
 };
 
-static struct chg_map chg_times[] = {
+static const struct chg_map chg_times[] = {
 	{  60,  0 << WM831X_CHG_TIME_SHIFT },
 	{  90,  1 << WM831X_CHG_TIME_SHIFT },
 	{ 120,  2 << WM831X_CHG_TIME_SHIFT },
@@ -235,7 +235,7 @@ static struct chg_map chg_times[] = {
 };
 
 static void wm831x_battery_apply_config(struct wm831x *wm831x,
-				       struct chg_map *map, int count, int val,
+				       const struct chg_map *map, int count, int val,
 				       int *reg, const char *name,
 				       const char *units)
 {
@@ -462,7 +462,7 @@ static int wm831x_bat_get_prop(struct power_supply *psy,
 	return ret;
 }
 
-static enum power_supply_property wm831x_bat_props[] = {
+static const enum power_supply_property wm831x_bat_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
@@ -470,7 +470,7 @@ static enum power_supply_property wm831x_bat_props[] = {
 	POWER_SUPPLY_PROP_CHARGE_TYPE,
 };
 
-static const char *wm831x_bat_irqs[] = {
+static const char * const wm831x_bat_irqs[] = {
 	"BATT HOT",
 	"BATT COLD",
 	"BATT FAIL",
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 888824592953..c4cb854971f5 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -288,6 +288,7 @@ struct power_supply_desc {
 struct power_supply_ext {
 	const char *const name;
 	u8 charge_behaviours;
+	u32 charge_types;
 	const enum power_supply_property *properties;
 	size_t num_properties;
author	Linus Torvalds <torvalds@linux-foundation.org>	2025-05-27 16:14:56 -0700
committer	Linus Torvalds <torvalds@linux-foundation.org>	2025-05-27 16:14:56 -0700
commit	c7c18635363f06c1943514c2f4c8170b325302e8 (patch)
tree	078a1a2f24e36cc2e891be6405e3144472908a7f
parent	Merge tag 'spi-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi (diff)
parent	power: supply: rt9471: Simplify definition of some struct linear_range (diff)
download	wireguard-linux-c7c18635363f06c1943514c2f4c8170b325302e8.tar.xz wireguard-linux-c7c18635363f06c1943514c2f4c8170b325302e8.zip