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hwmon: Add Qualcomm PMIC BCL hardware monitor driver (#424)
hwmon: Add Qualcomm PMIC BCL hardware monitor driver
2 parents 692bea2 + 11e8f87 commit 271d173

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‎Documentation/devicetree/bindings/hwmon/qcom,bcl-hwmon.yaml‎

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/hwmon/qcom,bcl-hwmon.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm SPMI PMIC Battery Current Limiting (BCL) Hardware Monitor
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maintainers:
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- Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>
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description: |
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SPMI PMIC Battery Current Limiting (BCL) hardware provides monitoring and
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alarm functionality for battery overcurrent and battery or system under
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voltage conditions. It monitors battery voltage and current, and
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can trigger interrupts when configurable thresholds are exceeded.
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properties:
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compatible:
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oneOf:
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- description: v1 based BCL
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items:
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- enum:
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- qcom,pm7250b-bcl
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- qcom,pm8250b-bcl
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- const: qcom,bcl-v1
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- description: v2 based BCL
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items:
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- enum:
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- qcom,pm8350b-bcl
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- qcom,pm8350c-bcl
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- const: qcom,bcl-v2
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- description: v3 bmx based BCL
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items:
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- enum:
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- qcom,pm8550b-bcl
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- qcom,pm7550ba-bcl
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- const: qcom,bcl-v3-bmx
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- description: v3 core based BCL
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items:
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- enum:
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- qcom,pm8550-bc0l
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- qcom,pm7550-bcl
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- const: qcom,bcl-v3-core
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- description: v3 wb based BCL
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items:
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- enum:
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- qcom,pmw5100-bcl
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- const: qcom,bcl-v3-wb
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- description: v4 bmx based BCL
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items:
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- enum:
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- qcom,pmih010-bcl
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- const: qcom,bcl-v4-bmx
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- description: v4 bmx with different scale based BCL
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items:
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- enum:
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- qcom,pmv010-bcl
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- const: qcom,bcl-v4-pmv010
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- description: v4 core based BCL
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items:
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- enum:
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- qcom,pmh010-bcl
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- const: qcom,bcl-v4-core
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- description: v4 wb based BCL
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items:
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- enum:
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- qcom,pmw6100-bcl
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- const: qcom,bcl-v4-wb
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reg:
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maxItems: 1
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description: BCL base address in the SPMI PMIC register map
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interrupts:
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minItems: 2
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maxItems: 2
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description:
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BCL alarm interrupts for different threshold levels
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interrupt-names:
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items:
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- const: bcl-max-min
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- const: bcl-critical
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overcurrent-thresholds-milliamp:
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description:
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Current thresholds in milliamperes for the two configurable current
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alarm levels (max and critical). These values are used to override
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default thresholds if a platform has different battery ocp specification.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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minItems: 2
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maxItems: 2
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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pmic {
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#address-cells = <1>;
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#size-cells = <0>;
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sensor@1d00 {
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compatible = "qcom,pm7250b-bcl", "qcom,bcl-v1";
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reg = <0x1d00>;
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interrupts = <0x2 0x1d 0x0 IRQ_TYPE_EDGE_RISING>,
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<0x2 0x1d 0x1 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "bcl-max-min",
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"bcl-critical";
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overcurrent-thresholds-milliamp = <5500 6000>;
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};
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};

‎Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.yaml‎

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type: object
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$ref: /schemas/rtc/qcom-pm8xxx-rtc.yaml#
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"^sensor@[0-9a-f]+$":
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type: object
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$ref: /schemas/hwmon/qcom,bcl-hwmon.yaml#
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"^temp-alarm@[0-9a-f]+$":
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type: object
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$ref: /schemas/thermal/qcom,spmi-temp-alarm.yaml#

‎MAINTAINERS‎

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F: Documentation/devicetree/bindings/net/qcom,bam-dmux.yaml
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F: drivers/net/wwan/qcom_bam_dmux.c
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QUALCOMM BCL HARDWARE MONITOR DRIVER
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M: Manaf Meethalavalappu Pallikunhi <manaf.pallikunhi@oss.qualcomm.com>
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L: linux-hwmon@vger.kernel.org
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L: linux-arm-msm@vger.kernel.org
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S: Maintained
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F: Documentation/devicetree/bindings/hwmon/qcom,bcl-hwmon.yaml
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F: drivers/hwmon/qcom-bcl-hwmon.c
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F: drivers/hwmon/qcom-bcl-hwmon.h
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QUALCOMM BLUETOOTH DRIVER
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L: linux-arm-msm@vger.kernel.org
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S: Maintained

‎arch/arm64/boot/dts/qcom/pm7250b.dtsi‎

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interrupt-controller;
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#interrupt-cells = <2>;
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};
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sensor@1d00 {
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compatible = "qcom,pm7250b-bcl", "qcom,bcl-v1";
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reg = <0x1d00>;
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interrupts = <PM7250B_SID 0x1d 0x0 IRQ_TYPE_EDGE_RISING>,
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<PM7250B_SID 0x1d 0x1 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "bcl-max-min",
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"bcl-critical";
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overcurrent-thresholds-milliamp = <5500 6000>;
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};
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};
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pmic@PM7250B_SID1 {

‎arch/arm64/boot/dts/qcom/pm8350c.dtsi‎

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#pwm-cells = <2>;
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status = "disabled";
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};
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sensor@4700 {
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compatible = "qcom,pm8350c-bcl", "qcom,bcl-v2";
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reg = <0x4700>;
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interrupts = <0x2 0x47 0x0 IRQ_TYPE_EDGE_RISING>,
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<0x2 0x47 0x1 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "bcl-max-min",
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"bcl-critical";
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};
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};
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};
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‎arch/arm64/configs/qcom.config‎

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CONFIG_STM_SOURCE_HEARTBEAT=m
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CONFIG_SENSORS_AMC6821=y
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CONFIG_SENSORS_EMC2305=y
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CONFIG_SENSORS_QCOM_BCL=y
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CONFIG_TRACE_MMIO_ACCESS=y
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CONFIG_UCLAMP_TASK_GROUP=y
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CONFIG_UCLAMP_TASK=y

‎drivers/hwmon/Kconfig‎

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This driver can also be built as a module. If so, the module
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will be called pwm-fan.
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config SENSORS_QCOM_BCL
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tristate "Qualcomm BCL hardware monitoring"
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help
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Say yes here to enable support for Qualcomm battery over current
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and under voltage alarms monitor.
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This driver can also be built as a module. If so, the module
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will be called qcom-bcl-hwmon.
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config SENSORS_QNAP_MCU_HWMON
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tristate "QNAP MCU hardware monitoring"
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depends on MFD_QNAP_MCU

‎drivers/hwmon/Makefile‎

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obj-$(CONFIG_SENSORS_POWR1220) += powr1220.o
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obj-$(CONFIG_SENSORS_PT5161L) += pt5161l.o
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obj-$(CONFIG_SENSORS_PWM_FAN) += pwm-fan.o
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obj-$(CONFIG_SENSORS_QCOM_BCL) += qcom-bcl-hwmon.o
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obj-$(CONFIG_SENSORS_QNAP_MCU_HWMON) += qnap-mcu-hwmon.o
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obj-$(CONFIG_SENSORS_RASPBERRYPI_HWMON) += raspberrypi-hwmon.o
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obj-$(CONFIG_SENSORS_SA67MCU) += sa67mcu-hwmon.o

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