Merge tag 'for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:
 "Battery/charger driver changes:
   - acer_a500: new fuel gauge driver for Acer Iconia Tab A500
   - bq256xx: new charger driver
   - bq27xxx: Support CHARGE_NOW for bq27z561/bq28z610/bq34z100
   - bq27xxx: Fix inverted CURRENT_NOW sign
   - cpcap: rework fuel gauge and charger drivers
   - ltc4162l: new charger driver
   - max8997-charger: add extcon based current limit configuration
   - max8903, wm97xx, z2: convert to GPIO descriptors (incl. ARM board files)
   - misc cleanup and fixes

  Reset drivers:
   - new poweroff driver for ATC260x
   - at91-sama5d2_shdwc: add support for sama7g5
   - drop zte zx driver (SoC support is removed from kernel)"

* tag 'for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (55 commits)
  power-supply: use kobj_to_dev()
  power: supply: charger-manager: fix typo
  power/reset: remove zte zx driver
  power: supply: bq25980: Fix repetive bq25975 with bq25960
  power: supply: smb347-charger: Fix interrupt usage if interrupt is unavailable
  power: supply: axp20x_usb_power: Init work before enabling IRQs
  power: supply: fix sbs-charger build, needs REGMAP_I2C
  power: supply: bq27xxx: fix polarity of current_now
  power: supply: charger-manager: fix incorrect health status
  power: reset: at91-sama5d2_shdwc: add support for sama7g5
  dt-bindings: atmel-sysreg: add microchip,sama7g5-shdwc
  power: reset: at91-sama5d2_shdwc: fix wkupdbc mask
  dt-bindings: power/supply: Add ltc4162-l-charger
  power: supply: bq24190_charger: convert comma to semicolon
  power: supply: ab8500_fg: convert comma to semicolon
  power: supply: ds2780: Switch to using the new API kobj_to_dev()
  power: supply: bq27xxx: Support CHARGE_NOW for bq27z561/bq28z610/bq34z100
  power: supply: cpcap-charger: Fix power_supply_put on null battery pointer
  power: supply: cpcap-battery: constify psy_desc
  power: supply: cpcap-battery: Fix typo
  ...

4 files changed, 264 insertions, 2 deletions

diff --git a/Documentation/ABI/testing/sysfs-class-power-ltc4162l b/Documentation/ABI/testing/sysfs-class-power-ltc4162l
new file mode 100644
index 000000000000..ba30db93052b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-power-ltc4162l
@@ -0,0 +1,82 @@
+What:		/sys/class/power_supply/ltc4162-l/charge_status
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		Detailed charge status information as reported by the chip.
+
+		Access: Read
+
+		Valid values:
+			ilim_reg_active
+			thermal_reg_active
+			vin_uvcl_active
+			iin_limit_active
+			constant_current
+			constant_voltage
+			charger_off
+
+What:		/sys/class/power_supply/ltc4162-l/ibat
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		Battery input current as measured by the charger. Negative value
+		means that the battery is discharging.
+
+		Access: Read
+
+		Valid values: Signed value in microamps
+
+What:		/sys/class/power_supply/ltc4162-l/vbat
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		Battery voltage as measured by the charger.
+
+		Access: Read
+
+		Valid values: In microvolts
+
+What:		/sys/class/power_supply/ltc4162-l/vbat_avg
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		Battery voltage, averaged over time, as measured by the charger.
+
+		Access: Read
+
+		Valid values: In microvolts
+
+What:		/sys/class/power_supply/ltc4162-l/force_telemetry
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		To save battery current, the measurement system is disabled if
+		the battery is the only source of power. This affects all
+		voltage, current and temperature measurements.
+		Write a "1" to this to keep performing telemetry once every few
+		seconds, even when running on battery (as reported by the online
+		property, which is "1" when external power is available and "0"
+		when the system runs on battery).
+
+		Access: Read, Write
+
+		Valid values: 0 (disabled) or 1 (enabled)
+
+What:		/sys/class/power_supply/ltc4162-l/arm_ship_mode
+Date:		Januari 2021
+KernelVersion:	5.11
+Description:
+		The charger will normally drain the battery while inactive,
+		typically drawing about 54 microamps. Write a "1" to this
+		property to arm a special "ship" mode that extends shelf life
+		by reducing the leakage to about 2.8 microamps. The chip will
+		remain in this mode (and no longer respond to I2C commands)
+		until some external power-supply is attached raising the input
+		voltage above 1V. It will then automatically revert to "0".
+		Writing a "0" to the property cancels the "ship" mode request.
+		The ship mode, when armed, activates once the input voltage
+		drops below 1V.
+
+		Access: Read, Write
+
+		Valid values: 0 (disable) or 1 (enable)
diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
index 67719f15eb4c..807264a78edc 100644
--- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt
@@ -91,7 +91,8 @@ SHDWC SAMA5D2-Compatible Shutdown Controller
 1) shdwc node
 
 required properties:
-- compatible: should be "atmel,sama5d2-shdwc" or "microchip,sam9x60-shdwc".
+- compatible: should be "atmel,sama5d2-shdwc", "microchip,sam9x60-shdwc" or
+  "microchip,sama7g5-shdwc"
 - reg: should contain registers location and length
 - clocks: phandle to input clock.
 - #address-cells: should be one. The cell is the wake-up input index.
@@ -103,7 +104,7 @@ optional properties:
   microseconds. It's usually a board-related property.
 - atmel,wakeup-rtc-timer: boolean to enable Real-Time Clock wake-up.
 
-optional microchip,sam9x60-shdwc properties:
+optional microchip,sam9x60-shdwc or microchip,sama7g5-shdwc properties:
 - atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.
 
 The node contains child nodes for each wake-up input that the platform uses.
diff --git a/Documentation/devicetree/bindings/power/supply/bq256xx.yaml b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml
new file mode 100644
index 000000000000..18b54783e11a
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml
@@ -0,0 +1,110 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/power/supply/bq256xx.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: TI bq256xx Switch Mode Buck Charger
+
+maintainers:
+  - Ricardo Rivera-Matos <r-rivera-matos@ti.com>
+
+description: |
+  The bq256xx devices are a family of highly-integrated battery charge
+  management and system power management ICs for single cell Li-ion and Li-
+  polymer batteries.
+
+  Datasheets:
+    - https://www.ti.com/lit/ds/symlink/bq25600.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25601.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25600d.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25601d.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25611d.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25618.pdf
+    - https://www.ti.com/lit/ds/symlink/bq25619.pdf
+
+properties:
+  compatible:
+    enum:
+      - ti,bq25600
+      - ti,bq25601
+      - ti,bq25600d
+      - ti,bq25601d
+      - ti,bq25611d
+      - ti,bq25618
+      - ti,bq25619
+
+  reg:
+    maxItems: 1
+
+  ti,watchdog-timeout-ms:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 0
+    description: |
+      Watchdog timer in ms. 0 (default) disables the watchdog
+    minimum: 0
+    maximum: 160000
+    enum: [ 0, 40000, 80000, 160000]
+
+  input-voltage-limit-microvolt:
+    description: |
+       Minimum input voltage limit in µV with a 100000 µV step
+    minimum: 3900000
+    maximum: 5400000
+
+  input-current-limit-microamp:
+    description: |
+       Maximum input current limit in µA with a 100000 µA step
+    minimum: 100000
+    maximum: 3200000
+
+  monitored-battery:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the battery node being monitored
+
+  interrupts:
+    maxItems: 1
+    description: |
+      Interrupt sends an active low, 256 μs pulse to host to report the charger
+      device status and faults.
+
+required:
+  - compatible
+  - reg
+  - monitored-battery
+
+additionalProperties: false
+
+examples:
+  - |
+    bat: battery {
+      compatible = "simple-battery";
+      constant-charge-current-max-microamp = <2040000>;
+      constant-charge-voltage-max-microvolt = <4352000>;
+      precharge-current-microamp = <180000>;
+      charge-term-current-microamp = <180000>;
+    };
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+
+      clock-frequency = <400000>;
+
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      charger@6b {
+        compatible = "ti,bq25601";
+        reg = <0x6b>;
+        monitored-battery = <&bat>;
+
+        interrupt-parent = <&gpio1>;
+        interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+        ti,watchdog-timeout-ms = <40000>;
+
+        input-voltage-limit-microvolt = <4500000>;
+        input-current-limit-microamp = <2400000>;
+       };
+    };
+...
diff --git a/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml
new file mode 100644
index 000000000000..1f88c9e013f4
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/ltc4162-l.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2020 Topic Embedded Products
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Linear Technology (Analog Devices) LTC4162-L Charger
+
+maintainers:
+  - Mike Looijmans <mike.looijmans@topic.nl>
+
+description: |
+  The LTC ® 4162-L is an advanced monolithic synchronous step-down switching
+  battery charger and PowerPath (TM) manager that seamlessly manages power
+  distribution between input sources such as wall adapters, backplanes, solar
+  panels, etc., and a rechargeable Lithium-Ion/Polymer battery.
+
+  Specifications about the charger can be found at:
+    https://www.analog.com/en/products/ltc4162-s.html
+
+properties:
+  compatible:
+    enum:
+      - lltc,ltc4162-l
+
+  reg:
+    maxItems: 1
+    description: I2C address of the charger.
+
+  lltc,rsnsb-micro-ohms:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Battery sense resistor in microohm.
+    minimum: 1000
+
+  lltc,rsnsi-micro-ohms:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: Input current sense resistor in microohm.
+    minimum: 1000
+
+  lltc,cell-count:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      Number of battery cells. If not provided, will be obtained from the chip
+      once the external power is applied. Omit this when the number of cells
+      is somewhat dynamic. Without it, several measurements will return 0 until
+      the charger is connected to an external supply.
+
+required:
+  - compatible
+  - reg
+  - lltc,rsnsb-micro-ohms
+  - lltc,rsnsi-micro-ohms
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c0 {
+      #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>;
+      };
+    };