diff --git a/Documentation/devicetree/bindings/hwmon/adt7475.yaml b/Documentation/devicetree/bindings/hwmon/adt7475.yaml index 051c976..79e8d62 100644 --- a/Documentation/devicetree/bindings/hwmon/adt7475.yaml +++ b/Documentation/devicetree/bindings/hwmon/adt7475.yaml @@ -45,12 +45,31 @@ properties: the pwm uses a logic low output for 100% duty cycle. If set to 1 the pwm uses a logic high output for 100% duty cycle. $ref: /schemas/types.yaml#/definitions/uint32-array + deprecated: true minItems: 3 maxItems: 3 items: enum: [0, 1] default: 1 + "#pwm-cells": + const: 4 + description: | + Number of cells in a PWM specifier. + - 0: The PWM channel + - 1: The PWM period in nanoseconds + - 90909091 (11 Hz) + - 71428571 (14 Hz) + - 45454545 (22 Hz) + - 34482759 (29 Hz) + - 28571429 (35 Hz) + - 22727273 (44 Hz) + - 17241379 (58 Hz) + - 11363636 (88 Hz) + - 44444 (22 kHz) + - 2: PWM flags 0 or PWM_POLARITY_INVERTED + - 3: The default PWM duty cycle in nanoseconds + patternProperties: "^adi,bypass-attenuator-in[0-4]$": description: | @@ -81,6 +100,10 @@ patternProperties: - smbalert# - gpio + "^fan-[0-9]+$": + $ref: fan-common.yaml# + unevaluatedProperties: false + required: - compatible - reg @@ -89,17 +112,27 @@ additionalProperties: false examples: - | + #include i2c { #address-cells = <1>; #size-cells = <0>; - hwmon@2e { + pwm: hwmon@2e { compatible = "adi,adt7476"; reg = <0x2e>; adi,bypass-attenuator-in0 = <1>; adi,bypass-attenuator-in1 = <0>; - adi,pwm-active-state = <1 0 1>; adi,pin10-function = "smbalert#"; adi,pin14-function = "tach4"; + #pwm-cells = <4>; + + /* PWMs at 22.5 kHz frequency, 50% duty*/ + fan-0 { + pwms = <&pwm 0 44444 0 22222>; + }; + + fan-1 { + pwms = <&pwm 2 44444 0 22222>; + }; }; }; diff --git a/Documentation/devicetree/bindings/hwmon/lltc,ltc2978.yaml b/Documentation/devicetree/bindings/hwmon/lltc,ltc2978.yaml new file mode 100644 index 0000000..1f98da3 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/lltc,ltc2978.yaml @@ -0,0 +1,94 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/lltc,ltc2978.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Octal Digital Power-supply monitor/supervisor/sequencer/margin controller. + +maintainers: + - Frank Li + +properties: + compatible: + enum: + - lltc,ltc2972 + - lltc,ltc2974 + - lltc,ltc2975 + - lltc,ltc2977 + - lltc,ltc2978 + - lltc,ltc2979 + - lltc,ltc2980 + - lltc,ltc3880 + - lltc,ltc3882 + - lltc,ltc3883 + - lltc,ltc3884 + - lltc,ltc3886 + - lltc,ltc3887 + - lltc,ltc3889 + - lltc,ltc7880 + - lltc,ltm2987 + - lltc,ltm4664 + - lltc,ltm4675 + - lltc,ltm4676 + - lltc,ltm4677 + - lltc,ltm4678 + - lltc,ltm4680 + - lltc,ltm4686 + - lltc,ltm4700 + + reg: + maxItems: 1 + + regulators: + type: object + description: | + list of regulators provided by this controller. + Valid names of regulators depend on number of supplies supported per device: + * ltc2972 vout0 - vout1 + * ltc2974, ltc2975 : vout0 - vout3 + * ltc2977, ltc2979, ltc2980, ltm2987 : vout0 - vout7 + * ltc2978 : vout0 - vout7 + * ltc3880, ltc3882, ltc3884, ltc3886, ltc3887, ltc3889 : vout0 - vout1 + * ltc7880 : vout0 - vout1 + * ltc3883 : vout0 + * ltm4664 : vout0 - vout1 + * ltm4675, ltm4676, ltm4677, ltm4678 : vout0 - vout1 + * ltm4680, ltm4686 : vout0 - vout1 + * ltm4700 : vout0 - vout1 + + patternProperties: + "^vout[0-7]$": + $ref: /schemas/regulator/regulator.yaml# + type: object + unevaluatedProperties: false + + additionalProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + regulator@5e { + compatible = "lltc,ltc2978"; + reg = <0x5e>; + + regulators { + vout0 { + regulator-name = "FPGA-2.5V"; + }; + vout2 { + regulator-name = "FPGA-1.5V"; + }; + }; + }; + }; + diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt deleted file mode 100644 index 4e7f621..0000000 --- a/Documentation/devicetree/bindings/hwmon/ltc2978.txt +++ /dev/null @@ -1,62 +0,0 @@ -ltc2978 - -Required properties: -- compatible: should contain one of: - * "lltc,ltc2972" - * "lltc,ltc2974" - * "lltc,ltc2975" - * "lltc,ltc2977" - * "lltc,ltc2978" - * "lltc,ltc2979" - * "lltc,ltc2980" - * "lltc,ltc3880" - * "lltc,ltc3882" - * "lltc,ltc3883" - * "lltc,ltc3884" - * "lltc,ltc3886" - * "lltc,ltc3887" - * "lltc,ltc3889" - * "lltc,ltc7880" - * "lltc,ltm2987" - * "lltc,ltm4664" - * "lltc,ltm4675" - * "lltc,ltm4676" - * "lltc,ltm4677" - * "lltc,ltm4678" - * "lltc,ltm4680" - * "lltc,ltm4686" - * "lltc,ltm4700" -- reg: I2C slave address - -Optional properties: -- regulators: A node that houses a sub-node for each regulator controlled by - the device. Each sub-node is identified using the node's name, with valid - values listed below. The content of each sub-node is defined by the - standard binding for regulators; see regulator.txt. - -Valid names of regulators depend on number of supplies supported per device: - * ltc2972 vout0 - vout1 - * ltc2974, ltc2975 : vout0 - vout3 - * ltc2977, ltc2979, ltc2980, ltm2987 : vout0 - vout7 - * ltc2978 : vout0 - vout7 - * ltc3880, ltc3882, ltc3884, ltc3886, ltc3887, ltc3889 : vout0 - vout1 - * ltc7880 : vout0 - vout1 - * ltc3883 : vout0 - * ltm4664 : vout0 - vout1 - * ltm4675, ltm4676, ltm4677, ltm4678 : vout0 - vout1 - * ltm4680, ltm4686 : vout0 - vout1 - * ltm4700 : vout0 - vout1 - -Example: -ltc2978@5e { - compatible = "lltc,ltc2978"; - reg = <0x5e>; - regulators { - vout0 { - regulator-name = "FPGA-2.5V"; - }; - vout2 { - regulator-name = "FPGA-1.5V"; - }; - }; -}; diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml new file mode 100644 index 0000000..b1ff496 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/maxim,max31790.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: The Maxim MAX31790 Fan Controller + +maintainers: + - Guenter Roeck + - Chanh Nguyen + +description: > + The MAX31790 controls the speeds of up to six fans using six + independent PWM outputs. The desired fan speeds (or PWM duty cycles) + are written through the I2C interface. + + Datasheets: + https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf + +properties: + compatible: + const: maxim,max31790 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + "#pwm-cells": + const: 1 + +patternProperties: + "^fan-[0-9]+$": + $ref: fan-common.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pwm_provider: fan-controller@20 { + compatible = "maxim,max31790"; + reg = <0x20>; + clocks = <&sys_clk>; + resets = <&reset 0>; + #pwm-cells = <1>; + + fan-0 { + pwms = <&pwm_provider 1>; + }; + + fan-1 { + pwms = <&pwm_provider 2>; + }; + }; + }; + diff --git a/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml b/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml new file mode 100644 index 0000000..f0667ac --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/sophgo,sg2042-hwmon-mcu.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/sophgo,sg2042-hwmon-mcu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sophgo SG2042 onboard MCU support + +maintainers: + - Inochi Amaoto + +properties: + compatible: + const: sophgo,sg2042-hwmon-mcu + + reg: + maxItems: 1 + + "#thermal-sensor-cells": + const: 1 + +required: + - compatible + - reg + - "#thermal-sensor-cells" + +allOf: + - $ref: /schemas/thermal/thermal-sensor.yaml# + +unevaluatedProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + hwmon@17 { + compatible = "sophgo,sg2042-hwmon-mcu"; + reg = <0x17>; + #thermal-sensor-cells = <1>; + }; + }; diff --git a/Documentation/hwmon/hwmon-kernel-api.rst b/Documentation/hwmon/hwmon-kernel-api.rst index 6cacf7d..8297acf 100644 --- a/Documentation/hwmon/hwmon-kernel-api.rst +++ b/Documentation/hwmon/hwmon-kernel-api.rst @@ -38,8 +38,6 @@ register/unregister functions:: void hwmon_device_unregister(struct device *dev); - void devm_hwmon_device_unregister(struct device *dev); - char *hwmon_sanitize_name(const char *name); char *devm_hwmon_sanitize_name(struct device *dev, const char *name); @@ -64,11 +62,6 @@ monitoring device structure. This function must be called from the driver remove function if the hardware monitoring device was registered with hwmon_device_register_with_info. -devm_hwmon_device_unregister does not normally have to be called. It is only -needed for error handling, and only needed if the driver probe fails after -the call to devm_hwmon_device_register_with_info and if the automatic (device -managed) removal would be too late. - All supported hwmon device registration functions only accept valid device names. Device names including invalid characters (whitespace, '*', or '-') will be rejected. The 'name' parameter is mandatory. diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst index 27d2e39..7f1939b 100644 --- a/Documentation/hwmon/ina2xx.rst +++ b/Documentation/hwmon/ina2xx.rst @@ -99,6 +99,10 @@ Sysfs entries for ina226, ina230 and ina231 only ------------------------------------------------ ======================= ==================================================== +curr1_lcrit Critical low current +curr1_crit Critical high current +curr1_lcrit_alarm Current critical low alarm +curr1_crit_alarm Current critical high alarm in0_lcrit Critical low shunt voltage in0_crit Critical high shunt voltage in0_lcrit_alarm Shunt voltage critical low alarm diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index 913c113..ea3b5be 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -206,6 +206,7 @@ Hardware Monitoring Kernel Drivers sch5636 scpi-hwmon sfctemp + sg2042-mcu sht15 sht21 sht3x diff --git a/Documentation/hwmon/lm92.rst b/Documentation/hwmon/lm92.rst index c131b92..d71cdb2 100644 --- a/Documentation/hwmon/lm92.rst +++ b/Documentation/hwmon/lm92.rst @@ -3,29 +3,29 @@ Kernel driver lm92 Supported chips: - * National Semiconductor LM92 + * National Semiconductor / Texas Instruments LM92 Prefix: 'lm92' Addresses scanned: I2C 0x48 - 0x4b - Datasheet: http://www.national.com/pf/LM/LM92.html + Datasheet: https://www.ti.com/lit/gpn/LM92 - * National Semiconductor LM76 + * National Semiconductor / Texas Instruments LM76 Prefix: 'lm92' - Addresses scanned: none, force parameter needed + Addresses scanned: none, must be instantiated explicitly - Datasheet: http://www.national.com/pf/LM/LM76.html + Datasheet: https://www.ti.com/lit/gpn/LM76 - * Maxim MAX6633/MAX6634/MAX6635 + * Maxim /Analog Devices MAX6633/MAX6634/MAX6635 Prefix: 'max6635' - Addresses scanned: none, force parameter needed + Addresses scanned: none, must be instantiated explicitly - Datasheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3074 + Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/max6633-max6635.pdf Authors: @@ -36,13 +36,13 @@ Authors: Description ----------- -This driver implements support for the National Semiconductor LM92 -temperature sensor. +This driver implements support for the National Semiconductor / Texas +Instruments LM92 temperature sensor. Each LM92 temperature sensor supports a single temperature sensor. There are alarms for high, low, and critical thresholds. There's also an hysteresis to control the thresholds for resetting alarms. -Support was added later for the LM76 and Maxim MAX6633/MAX6634/MAX6635, -which are mostly compatible. They have not all been tested, so you -may need to use the force parameter. +The driver also supports LM76 and Maxim MAX6633/MAX6634/MAX6635, which are +mostly compatible but do not have a vendor ID register and therefore must be +instantiated explicitly. diff --git a/Documentation/hwmon/max1619.rst b/Documentation/hwmon/max1619.rst index e25956e..b5fc175 100644 --- a/Documentation/hwmon/max1619.rst +++ b/Documentation/hwmon/max1619.rst @@ -27,7 +27,3 @@ All temperature values are given in degrees Celsius. Resolution is 1.0 degree for the local temperature and for the remote temperature. Only the external sensor has high and low limits. - -The max1619 driver will not update its values more frequently than every -other second; reading them more often will do no harm, but will return -'old' values. diff --git a/Documentation/hwmon/oxp-sensors.rst b/Documentation/hwmon/oxp-sensors.rst index 55b1ef6..581c4da 100644 --- a/Documentation/hwmon/oxp-sensors.rst +++ b/Documentation/hwmon/oxp-sensors.rst @@ -10,41 +10,59 @@ Authors: Description: ------------ -Handheld devices from One Netbook and Aya Neo provide fan readings and fan -control through their embedded controllers. +Handheld devices from OneNetbook, AOKZOE, AYANEO, And OrangePi provide fan +readings and fan control through their embedded controllers. -Currently only supports AMD boards from One X Player, AOK ZOE, and some Aya -Neo devices. One X Player Intel boards could be supported if we could figure -out the EC registers and values to write to since the EC layout and model is -different. Aya Neo devices preceding the AIR may not be supportable as the EC -model is different and do not appear to have manual control capabilities. +Currently supports OneXPlayer devices, AOKZOE, AYANEO, and OrangePi +handheld devices. AYANEO devices preceding the AIR and OneXPlayer devices +preceding the Mini A07 are not supportable as the EC model is different +and do not have manual control capabilities. -Some models have a toggle for changing the behaviour of the "Turbo/Silent" -button of the device. It will change the key event that it triggers with -a flip of the `tt_toggle` attribute. See below for boards that support this -function. +Some OneXPlayer and AOKZOE models have a toggle for changing the behaviour +of the "Turbo/Silent" button of the device. It will change the key event +that it triggers with a flip of the `tt_toggle` attribute. See below for +boards that support this function. Supported devices ----------------- Currently the driver supports the following handhelds: - - AOK ZOE A1 - - AOK ZOE A1 PRO - - Aya Neo 2 - - Aya Neo AIR - - Aya Neo AIR Plus (Mendocino) - - Aya Neo AIR Pro - - Aya Neo Geek + - AOKZOE A1 + - AOKZOE A1 PRO + - AYANEO 2 + - AYANEO 2S + - AYANEO AIR + - AYANEO AIR 1S + - AYANEO AIR Plus (Mendocino) + - AYANEO AIR Pro + - AYANEO Flip DS + - AYANEO Flip KB + - AYANEO Geek + - AYANEO Geek 1S + - AYANEO KUN + - OneXPlayer 2 + - OneXPlayer 2 Pro - OneXPlayer AMD - OneXPlayer mini AMD - OneXPlayer mini AMD PRO + - OneXPlayer OneXFly + - OneXPlayer X1 A + - OneXPlayer X1 i + - OneXPlayer X1 mini + - OrangePi NEO-01 "Turbo/Silent" button behaviour toggle is only supported on: - AOK ZOE A1 - AOK ZOE A1 PRO + - OneXPlayer 2 + - OneXPlayer 2 Pro - OneXPlayer mini AMD (only with updated alpha BIOS) - OneXPlayer mini AMD PRO + - OneXPlayer OneXFly + - OneXPlayer X1 A + - OneXPlayer X1 i + - OneXPlayer X1 mini Sysfs entries ------------- @@ -52,7 +70,7 @@ Sysfs entries The following attributes are supported: fan1_input - Read Only. Reads current fan RMP. + Read Only. Reads current fan RPM. pwm1_enable Read Write. Enable manual fan control. Write "1" to set to manual, write "0" diff --git a/Documentation/hwmon/sg2042-mcu.rst b/Documentation/hwmon/sg2042-mcu.rst new file mode 100644 index 0000000..077e798 --- /dev/null +++ b/Documentation/hwmon/sg2042-mcu.rst @@ -0,0 +1,78 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Kernel driver sg2042-mcu +======================== + +Supported chips: + + * Onboard MCU for sg2042 + + Addresses scanned: - + + Prefix: 'sg2042-mcu' + +Authors: + + - Inochi Amaoto + +Description +----------- + +This driver supprts hardware monitoring for onboard MCU with +i2c interface. + +Usage Notes +----------- + +This driver does not auto-detect devices. You will have to instantiate +the devices explicitly. +Please see Documentation/i2c/instantiating-devices.rst for details. + +Sysfs Attributes +---------------- + +The following table shows the standard entries support by the driver: + +================= ===================================================== +Name Description +================= ===================================================== +temp1_input Measured temperature of SoC +temp1_crit Critical high temperature +temp1_crit_hyst hysteresis temperature restore from Critical +temp2_input Measured temperature of the base board +================= ===================================================== + +The following table shows the extra entries support by the driver +(the MCU device is in i2c subsystem): + +================= ======= ============================================= +Name Perm Description +================= ======= ============================================= +reset_count RO Reset count of the SoC +uptime RO Seconds after the MCU is powered +reset_reason RO Reset reason for the last reset +repower_policy RW Execution policy when triggering repower +================= ======= ============================================= + +``repower_policy`` + The repower is triggered when the temperature of the SoC falls below + the hysteresis temperature after triggering a shutdown due to + reaching the critical temperature. + The valid values for this entry are "repower" and "keep". "keep" will + leave the SoC down when the triggering repower, and "repower" will + boot the SoC. + +Debugfs Interfaces +------------------ + +If debugfs is available, this driver exposes some hardware specific +data in ``/sys/kernel/debug/sg2042-mcu/*/``. + +================= ======= ============================================= +Name Format Description +================= ======= ============================================= +firmware_version 0x%02x firmware version of the MCU +pcb_version 0x%02x version number of the base board +board_type 0x%02x identifiers for the base board +mcu_type %d type of the MCU: 0 is STM32, 1 is GD32 +================= ======= ============================================= diff --git a/MAINTAINERS b/MAINTAINERS index a470a2a..12d7e98 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15295,6 +15295,12 @@ S: Maintained F: Documentation/hwmon/surface_fan.rst F: drivers/hwmon/surface_fan.c +MICROSOFT SURFACE SENSOR THERMAL DRIVER +M: Maximilian Luz +L: linux-hwmon@vger.kernel.org +S: Maintained +F: drivers/hwmon/surface_temp.c + MICROSOFT SURFACE GPE LID SUPPORT DRIVER M: Maximilian Luz L: platform-driver-x86@vger.kernel.org diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index b60fe2e..65ea925 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1511,9 +1511,10 @@ config SENSORS_LM90 config SENSORS_LM92 tristate "National Semiconductor LM92 and compatibles" depends on I2C + select REGMAP_I2C help If you say yes here you get support for National Semiconductor LM92 - and Maxim MAX6635 sensor chips. + and LM76 as well as Maxim MAX6633/6634/6635 sensor chips. This driver can also be built as a module. If so, the module will be called lm92. @@ -1532,6 +1533,7 @@ config SENSORS_LM93 config SENSORS_LM95234 tristate "National Semiconductor LM95234 and compatibles" depends on I2C + select REGMAP_I2C help If you say yes here you get support for the LM95233 and LM95234 temperature sensor chips. @@ -2066,6 +2068,17 @@ config SENSORS_SFCTEMP This driver can also be built as a module. If so, the module will be called sfctemp. +config SENSORS_SG2042_MCU + tristate "Sophgo onboard MCU support" + depends on I2C + depends on ARCH_SOPHGO || COMPILE_TEST + help + Support for onboard MCU of Sophgo SG2042 SoCs. This mcu provides + power control and some basic information. + + This driver can be built as a module. If so, the module + will be called sg2042-mcu. + config SENSORS_SURFACE_FAN tristate "Surface Fan Driver" depends on SURFACE_AGGREGATOR @@ -2080,6 +2093,17 @@ config SENSORS_SURFACE_FAN Select M or Y here, if you want to be able to read the fan's speed. +config SENSORS_SURFACE_TEMP + tristate "Microsoft Surface Thermal Sensor Driver" + depends on SURFACE_AGGREGATOR + depends on SURFACE_AGGREGATOR_BUS + help + Driver for monitoring thermal sensors connected via the Surface + Aggregator Module (embedded controller) on Microsoft Surface devices. + + This driver can also be built as a module. If so, the module + will be called surface_temp. + config SENSORS_ADC128D818 tristate "Texas Instruments ADC128D818" depends on I2C diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index b1c7056..9554d2f 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -194,6 +194,7 @@ obj-$(CONFIG_SENSORS_SCH56XX_COMMON)+= sch56xx-common.o obj-$(CONFIG_SENSORS_SCH5627) += sch5627.o obj-$(CONFIG_SENSORS_SCH5636) += sch5636.o obj-$(CONFIG_SENSORS_SFCTEMP) += sfctemp.o +obj-$(CONFIG_SENSORS_SG2042_MCU) += sg2042-mcu.o obj-$(CONFIG_SENSORS_SL28CPLD) += sl28cpld-hwmon.o obj-$(CONFIG_SENSORS_SHT15) += sht15.o obj-$(CONFIG_SENSORS_SHT21) += sht21.o @@ -209,6 +210,7 @@ obj-$(CONFIG_SENSORS_SPARX5) += sparx5-temp.o obj-$(CONFIG_SENSORS_SPD5118) += spd5118.o obj-$(CONFIG_SENSORS_STTS751) += stts751.o obj-$(CONFIG_SENSORS_SURFACE_FAN)+= surface_fan.o +obj-$(CONFIG_SENSORS_SURFACE_TEMP)+= surface_temp.o obj-$(CONFIG_SENSORS_SY7636A) += sy7636a-hwmon.o obj-$(CONFIG_SENSORS_AMC6821) += amc6821.o obj-$(CONFIG_SENSORS_TC74) += tc74.o diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c index 517248d..dbee692 100644 --- a/drivers/hwmon/adt7470.c +++ b/drivers/hwmon/adt7470.c @@ -728,30 +728,22 @@ static const int adt7470_freq_map[] = { static int pwm1_freq_get(struct device *dev) { struct adt7470_data *data = dev_get_drvdata(dev); - unsigned int cfg_reg_1, cfg_reg_2; + unsigned int regs[2] = {ADT7470_REG_CFG, ADT7470_REG_CFG_2}; + u8 cfg_reg[2]; int index; int err; - mutex_lock(&data->lock); - err = regmap_read(data->regmap, ADT7470_REG_CFG, &cfg_reg_1); - if (err < 0) - goto out; - err = regmap_read(data->regmap, ADT7470_REG_CFG_2, &cfg_reg_2); - if (err < 0) - goto out; - mutex_unlock(&data->lock); + err = regmap_multi_reg_read(data->regmap, regs, cfg_reg, 2); + if (err) + return err; - index = (cfg_reg_2 & ADT7470_FREQ_MASK) >> ADT7470_FREQ_SHIFT; - if (!(cfg_reg_1 & ADT7470_CFG_LF)) + index = (cfg_reg[1] & ADT7470_FREQ_MASK) >> ADT7470_FREQ_SHIFT; + if (!(cfg_reg[0] & ADT7470_CFG_LF)) index += 8; if (index >= ARRAY_SIZE(adt7470_freq_map)) index = ARRAY_SIZE(adt7470_freq_map) - 1; return adt7470_freq_map[index]; - -out: - mutex_unlock(&data->lock); - return err; } static int adt7470_pwm_read(struct device *dev, u32 attr, int channel, long *val) diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c index 382a2bb..ca466d1 100644 --- a/drivers/hwmon/adt7475.c +++ b/drivers/hwmon/adt7475.c @@ -21,6 +21,8 @@ #include #include +#include + /* Indexes for the sysfs hooks */ enum adt_sysfs_id { INPUT = 0, @@ -1662,6 +1664,130 @@ static int adt7475_set_pwm_polarity(struct i2c_client *client) return 0; } +struct adt7475_pwm_config { + int index; + int freq; + int flags; + int duty; +}; + +static int _adt7475_pwm_properties_parse_args(u32 args[4], struct adt7475_pwm_config *cfg) +{ + int freq_hz; + int duty; + + if (args[1] == 0) + return -EINVAL; + + freq_hz = 1000000000UL / args[1]; + if (args[3] >= args[1]) + duty = 255; + else + duty = div_u64(255ULL * args[3], args[1]); + + cfg->index = args[0]; + cfg->freq = find_closest(freq_hz, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); + cfg->flags = args[2]; + cfg->duty = duty; + + return 0; +} + +static int adt7475_pwm_properties_parse_reference_args(struct fwnode_handle *fwnode, + struct adt7475_pwm_config *cfg) +{ + int ret, i; + struct fwnode_reference_args rargs = {}; + u32 args[4] = {}; + + ret = fwnode_property_get_reference_args(fwnode, "pwms", "#pwm-cells", 0, 0, &rargs); + if (ret) + return ret; + + if (rargs.nargs != 4) { + fwnode_handle_put(rargs.fwnode); + return -EINVAL; + } + + for (i = 0; i < 4; i++) + args[i] = rargs.args[i]; + + ret = _adt7475_pwm_properties_parse_args(args, cfg); + + fwnode_handle_put(rargs.fwnode); + + return ret; +} + +static int adt7475_pwm_properties_parse_args(struct fwnode_handle *fwnode, + struct adt7475_pwm_config *cfg) +{ + int ret; + u32 args[4] = {}; + + ret = fwnode_property_read_u32_array(fwnode, "pwms", args, ARRAY_SIZE(args)); + if (ret) + return ret; + + return _adt7475_pwm_properties_parse_args(args, cfg); +} + +static int adt7475_fan_pwm_config(struct i2c_client *client) +{ + struct adt7475_data *data = i2c_get_clientdata(client); + struct fwnode_handle *child; + struct adt7475_pwm_config cfg = {}; + int ret; + + device_for_each_child_node(&client->dev, child) { + if (!fwnode_property_present(child, "pwms")) + continue; + + if (is_of_node(child)) + ret = adt7475_pwm_properties_parse_reference_args(child, &cfg); + else + ret = adt7475_pwm_properties_parse_args(child, &cfg); + + if (cfg.index >= ADT7475_PWM_COUNT) + return -EINVAL; + + ret = adt7475_read(PWM_CONFIG_REG(cfg.index)); + if (ret < 0) + return ret; + data->pwm[CONTROL][cfg.index] = ret; + if (cfg.flags & PWM_POLARITY_INVERTED) + data->pwm[CONTROL][cfg.index] |= BIT(4); + else + data->pwm[CONTROL][cfg.index] &= ~BIT(4); + + /* Force to manual mode so PWM values take effect */ + data->pwm[CONTROL][cfg.index] &= ~0xE0; + data->pwm[CONTROL][cfg.index] |= 0x07 << 5; + + ret = i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(cfg.index), + data->pwm[CONTROL][cfg.index]); + if (ret) + return ret; + + data->pwm[INPUT][cfg.index] = cfg.duty; + ret = i2c_smbus_write_byte_data(client, PWM_REG(cfg.index), + data->pwm[INPUT][cfg.index]); + if (ret) + return ret; + + data->range[cfg.index] = adt7475_read(TEMP_TRANGE_REG(cfg.index)); + data->range[cfg.index] &= ~0xf; + data->range[cfg.index] |= cfg.freq; + + ret = i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(cfg.index), + data->range[cfg.index]); + if (ret) + return ret; + } + + return 0; +} + static int adt7475_probe(struct i2c_client *client) { enum chips chip; @@ -1774,6 +1900,10 @@ static int adt7475_probe(struct i2c_client *client) if (ret && ret != -EINVAL) dev_warn(&client->dev, "Error configuring pwm polarity\n"); + ret = adt7475_fan_pwm_config(client); + if (ret) + dev_warn(&client->dev, "Error %d configuring fan/pwm\n", ret); + /* Start monitoring */ switch (chip) { case adt7475: diff --git a/drivers/hwmon/adt7x10.c b/drivers/hwmon/adt7x10.c index 6701920..2d32939 100644 --- a/drivers/hwmon/adt7x10.c +++ b/drivers/hwmon/adt7x10.c @@ -170,21 +170,15 @@ static int adt7x10_temp_write(struct adt7x10_data *data, int index, long temp) static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val) { - int hyst, temp, ret; + unsigned int regs[2] = {ADT7X10_T_HYST, ADT7X10_REG_TEMP[index]}; + int hyst, ret; + u16 regdata[2]; - mutex_lock(&data->update_lock); - ret = regmap_read(data->regmap, ADT7X10_T_HYST, &hyst); - if (ret) { - mutex_unlock(&data->update_lock); - return ret; - } - - ret = regmap_read(data->regmap, ADT7X10_REG_TEMP[index], &temp); - mutex_unlock(&data->update_lock); + ret = regmap_multi_reg_read(data->regmap, regs, regdata, 2); if (ret) return ret; - hyst = (hyst & ADT7X10_T_HYST_MASK) * 1000; + hyst = (regdata[0] & ADT7X10_T_HYST_MASK) * 1000; /* * hysteresis is stored as a 4 bit offset in the device, convert it @@ -194,7 +188,7 @@ static int adt7x10_hyst_read(struct adt7x10_data *data, int index, long *val) if (index == adt7x10_t_alarm_low) hyst = -hyst; - *val = ADT7X10_REG_TO_TEMP(data, temp) - hyst; + *val = ADT7X10_REG_TO_TEMP(data, regdata[1]) - hyst; return 0; } diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c index ec94392..ac64b40 100644 --- a/drivers/hwmon/amc6821.c +++ b/drivers/hwmon/amc6821.c @@ -136,29 +136,25 @@ struct amc6821_data { */ static int amc6821_get_auto_point_temps(struct regmap *regmap, int channel, u8 *temps) { - u32 pwm, regval; + u32 regs[] = { + AMC6821_REG_DCY_LOW_TEMP, + AMC6821_REG_PSV_TEMP, + channel ? AMC6821_REG_RTEMP_FAN_CTRL : AMC6821_REG_LTEMP_FAN_CTRL + }; + u8 regvals[3]; + int slope; int err; - err = regmap_read(regmap, AMC6821_REG_DCY_LOW_TEMP, &pwm); - if (err) - return err; - - err = regmap_read(regmap, AMC6821_REG_PSV_TEMP, ®val); - if (err) - return err; - temps[0] = regval; - - err = regmap_read(regmap, - channel ? AMC6821_REG_RTEMP_FAN_CTRL : AMC6821_REG_LTEMP_FAN_CTRL, - ®val); + err = regmap_multi_reg_read(regmap, regs, regvals, 3); if (err) return err; - temps[1] = FIELD_GET(AMC6821_TEMP_LIMIT_MASK, regval) * 4; + temps[0] = regvals[1]; + temps[1] = FIELD_GET(AMC6821_TEMP_LIMIT_MASK, regvals[2]) * 4; /* slope is 32 >> in °C */ - regval = 32 >> FIELD_GET(AMC6821_TEMP_SLOPE_MASK, regval); - if (regval) - temps[2] = temps[1] + DIV_ROUND_CLOSEST(255 - pwm, regval); + slope = 32 >> FIELD_GET(AMC6821_TEMP_SLOPE_MASK, regvals[2]); + if (slope) + temps[2] = temps[1] + DIV_ROUND_CLOSEST(255 - regvals[0], slope); else temps[2] = 255; diff --git a/drivers/hwmon/aspeed-g6-pwm-tach.c b/drivers/hwmon/aspeed-g6-pwm-tach.c index 08a2ded..75eadda 100644 --- a/drivers/hwmon/aspeed-g6-pwm-tach.c +++ b/drivers/hwmon/aspeed-g6-pwm-tach.c @@ -456,7 +456,6 @@ static int aspeed_pwm_tach_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev, *hwmon; int ret; - struct device_node *child; struct aspeed_pwm_tach_data *priv; struct pwm_chip *chip; @@ -498,10 +497,9 @@ static int aspeed_pwm_tach_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "Failed to add PWM chip\n"); - for_each_child_of_node(dev->of_node, child) { + for_each_child_of_node_scoped(dev->of_node, child) { ret = aspeed_create_fan_monitor(dev, child, priv); if (ret) { - of_node_put(child); dev_warn(dev, "Failed to create fan %d", ret); return 0; } diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c index 4acc185..aa159bf 100644 --- a/drivers/hwmon/aspeed-pwm-tacho.c +++ b/drivers/hwmon/aspeed-pwm-tacho.c @@ -907,7 +907,7 @@ static void aspeed_pwm_tacho_remove(void *data) static int aspeed_pwm_tacho_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *np, *child; + struct device_node *np; struct aspeed_pwm_tacho_data *priv; void __iomem *regs; struct device *hwmon; @@ -951,12 +951,10 @@ static int aspeed_pwm_tacho_probe(struct platform_device *pdev) aspeed_create_type(priv); - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { ret = aspeed_create_fan(dev, child, priv); - if (ret) { - of_node_put(child); + if (ret) return ret; - } } priv->groups[0] = &pwm_dev_group; diff --git a/drivers/hwmon/chipcap2.c b/drivers/hwmon/chipcap2.c index 6ccceae..edf4544 100644 --- a/drivers/hwmon/chipcap2.c +++ b/drivers/hwmon/chipcap2.c @@ -740,37 +740,26 @@ static int cc2_probe(struct i2c_client *client) data->client = client; data->regulator = devm_regulator_get_exclusive(dev, "vdd"); - if (IS_ERR(data->regulator)) { - dev_err_probe(dev, PTR_ERR(data->regulator), - "Failed to get regulator\n"); - return PTR_ERR(data->regulator); - } + if (IS_ERR(data->regulator)) + return dev_err_probe(dev, PTR_ERR(data->regulator), + "Failed to get regulator\n"); ret = cc2_request_ready_irq(data, dev); - if (ret) { - dev_err_probe(dev, ret, "Failed to request ready irq\n"); - return ret; - } + if (ret) + return dev_err_probe(dev, ret, "Failed to request ready irq\n"); ret = cc2_request_alarm_irqs(data, dev); - if (ret) { - dev_err_probe(dev, ret, "Failed to request alarm irqs\n"); - goto disable; - } + if (ret) + return dev_err_probe(dev, ret, "Failed to request alarm irqs\n"); data->hwmon = devm_hwmon_device_register_with_info(dev, client->name, data, &cc2_chip_info, NULL); - if (IS_ERR(data->hwmon)) { - dev_err_probe(dev, PTR_ERR(data->hwmon), - "Failed to register hwmon device\n"); - ret = PTR_ERR(data->hwmon); - } - -disable: - cc2_disable(data); + if (IS_ERR(data->hwmon)) + return dev_err_probe(dev, PTR_ERR(data->hwmon), + "Failed to register hwmon device\n"); - return ret; + return 0; } static void cc2_remove(struct i2c_client *client) diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 0362a13..f9b3a30 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -1489,6 +1489,14 @@ static const struct dmi_system_id i8k_whitelist_fan_control[] __initconst = { .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_34A3_35A3], }, { + .ident = "Dell Latitude 7320", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 7320"), + }, + .driver_data = (void *)&i8k_fan_control_data[I8K_FAN_30A3_31A3], + }, + { .ident = "Dell Latitude E6440", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c index cb2f01d..4514f3e 100644 --- a/drivers/hwmon/gsc-hwmon.c +++ b/drivers/hwmon/gsc-hwmon.c @@ -400,6 +400,7 @@ static const struct of_device_id gsc_hwmon_of_match[] = { { .compatible = "gw,gsc-adc", }, {} }; +MODULE_DEVICE_TABLE(of, gsc_hwmon_of_match); static struct platform_driver gsc_hwmon_driver = { .driver = { diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index a362080..9c35c4d 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -1188,24 +1188,6 @@ error: } EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_info); -static int devm_hwmon_match(struct device *dev, void *res, void *data) -{ - struct device **hwdev = res; - - return *hwdev == data; -} - -/** - * devm_hwmon_device_unregister - removes a previously registered hwmon device - * - * @dev: the parent device of the device to unregister - */ -void devm_hwmon_device_unregister(struct device *dev) -{ - WARN_ON(devres_release(dev, devm_hwmon_release, devm_hwmon_match, dev)); -} -EXPORT_SYMBOL_GPL(devm_hwmon_device_unregister); - static char *__hwmon_sanitize_name(struct device *dev, const char *old_name) { char *name, *p; diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index 9ab4205..f0fa6d0 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -22,21 +22,21 @@ * Thanks to Jan Volkering */ +#include +#include +#include +#include +#include +#include +#include +#include #include #include -#include -#include +#include +#include #include -#include -#include -#include -#include -#include -#include +#include #include -#include - -#include /* common register definitions */ #define INA2XX_CONFIG 0x00 @@ -51,10 +51,6 @@ #define INA226_ALERT_LIMIT 0x07 #define INA226_DIE_ID 0xFF -/* register count */ -#define INA219_REGISTERS 6 -#define INA226_REGISTERS 8 - #define INA2XX_MAX_REGISTERS 8 /* settings - depend on use case */ @@ -68,39 +64,65 @@ #define INA2XX_RSHUNT_DEFAULT 10000 /* bit mask for reading the averaging setting in the configuration register */ -#define INA226_AVG_RD_MASK 0x0E00 +#define INA226_AVG_RD_MASK GENMASK(11, 9) -#define INA226_READ_AVG(reg) (((reg) & INA226_AVG_RD_MASK) >> 9) -#define INA226_SHIFT_AVG(val) ((val) << 9) +#define INA226_READ_AVG(reg) FIELD_GET(INA226_AVG_RD_MASK, reg) -#define INA226_ALERT_POLARITY_MASK 0x0002 -#define INA226_SHIFT_ALERT_POLARITY(val) ((val) << 1) -#define INA226_ALERT_POL_LOW 0 -#define INA226_ALERT_POL_HIGH 1 +#define INA226_ALERT_LATCH_ENABLE BIT(0) +#define INA226_ALERT_POLARITY BIT(1) /* bit number of alert functions in Mask/Enable Register */ -#define INA226_SHUNT_OVER_VOLTAGE_BIT 15 -#define INA226_SHUNT_UNDER_VOLTAGE_BIT 14 -#define INA226_BUS_OVER_VOLTAGE_BIT 13 -#define INA226_BUS_UNDER_VOLTAGE_BIT 12 -#define INA226_POWER_OVER_LIMIT_BIT 11 +#define INA226_SHUNT_OVER_VOLTAGE_MASK BIT(15) +#define INA226_SHUNT_UNDER_VOLTAGE_MASK BIT(14) +#define INA226_BUS_OVER_VOLTAGE_MASK BIT(13) +#define INA226_BUS_UNDER_VOLTAGE_MASK BIT(12) +#define INA226_POWER_OVER_LIMIT_MASK BIT(11) /* bit mask for alert config bits of Mask/Enable Register */ -#define INA226_ALERT_CONFIG_MASK 0xFC00 +#define INA226_ALERT_CONFIG_MASK GENMASK(15, 10) #define INA226_ALERT_FUNCTION_FLAG BIT(4) -/* common attrs, ina226 attrs and NULL */ -#define INA2XX_MAX_ATTRIBUTE_GROUPS 3 - /* * Both bus voltage and shunt voltage conversion times for ina226 are set * to 0b0100 on POR, which translates to 2200 microseconds in total. */ #define INA226_TOTAL_CONV_TIME_DEFAULT 2200 -static struct regmap_config ina2xx_regmap_config = { +static bool ina2xx_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case INA2XX_CONFIG: + case INA2XX_CALIBRATION: + case INA226_MASK_ENABLE: + case INA226_ALERT_LIMIT: + return true; + default: + return false; + } +} + +static bool ina2xx_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case INA2XX_SHUNT_VOLTAGE: + case INA2XX_BUS_VOLTAGE: + case INA2XX_POWER: + case INA2XX_CURRENT: + return true; + default: + return false; + } +} + +static const struct regmap_config ina2xx_regmap_config = { .reg_bits = 8, .val_bits = 16, + .use_single_write = true, + .use_single_read = true, + .max_register = INA2XX_MAX_REGISTERS, + .cache_type = REGCACHE_MAPLE, + .volatile_reg = ina2xx_volatile_reg, + .writeable_reg = ina2xx_writeable_reg, }; enum ina2xx_ids { ina219, ina226 }; @@ -108,7 +130,6 @@ enum ina2xx_ids { ina219, ina226 }; struct ina2xx_config { u16 config_default; int calibration_value; - int registers; int shunt_div; int bus_voltage_shift; int bus_voltage_lsb; /* uV */ @@ -117,21 +138,19 @@ struct ina2xx_config { struct ina2xx_data { const struct ina2xx_config *config; + enum ina2xx_ids chip; long rshunt; long current_lsb_uA; long power_lsb_uW; struct mutex config_lock; struct regmap *regmap; - - const struct attribute_group *groups[INA2XX_MAX_ATTRIBUTE_GROUPS]; }; static const struct ina2xx_config ina2xx_config[] = { [ina219] = { .config_default = INA219_CONFIG_DEFAULT, .calibration_value = 4096, - .registers = INA219_REGISTERS, .shunt_div = 100, .bus_voltage_shift = 3, .bus_voltage_lsb = 4000, @@ -140,7 +159,6 @@ static const struct ina2xx_config ina2xx_config[] = { [ina226] = { .config_default = INA226_CONFIG_DEFAULT, .calibration_value = 2048, - .registers = INA226_REGISTERS, .shunt_div = 400, .bus_voltage_shift = 0, .bus_voltage_lsb = 1250, @@ -171,66 +189,76 @@ static int ina226_reg_to_interval(u16 config) * Return the new, shifted AVG field value of CONFIG register, * to use with regmap_update_bits */ -static u16 ina226_interval_to_reg(int interval) +static u16 ina226_interval_to_reg(long interval) { int avg, avg_bits; + /* + * The maximum supported interval is 1,024 * (2 * 8.244ms) ~= 16.8s. + * Clamp to 32 seconds before calculations to avoid overflows. + */ + interval = clamp_val(interval, 0, 32000); + avg = DIV_ROUND_CLOSEST(interval * 1000, INA226_TOTAL_CONV_TIME_DEFAULT); avg_bits = find_closest(avg, ina226_avg_tab, ARRAY_SIZE(ina226_avg_tab)); - return INA226_SHIFT_AVG(avg_bits); + return FIELD_PREP(INA226_AVG_RD_MASK, avg_bits); } -static int ina2xx_set_alert_polarity(struct ina2xx_data *data, - unsigned long val) +static int ina2xx_get_value(struct ina2xx_data *data, u8 reg, + unsigned int regval) { - return regmap_update_bits(data->regmap, INA226_MASK_ENABLE, - INA226_ALERT_POLARITY_MASK, - INA226_SHIFT_ALERT_POLARITY(val)); -} + int val; -/* - * Calibration register is set to the best value, which eliminates - * truncation errors on calculating current register in hardware. - * According to datasheet (eq. 3) the best values are 2048 for - * ina226 and 4096 for ina219. They are hardcoded as calibration_value. - */ -static int ina2xx_calibrate(struct ina2xx_data *data) -{ - return regmap_write(data->regmap, INA2XX_CALIBRATION, - data->config->calibration_value); + switch (reg) { + case INA2XX_SHUNT_VOLTAGE: + /* signed register */ + val = DIV_ROUND_CLOSEST((s16)regval, data->config->shunt_div); + break; + case INA2XX_BUS_VOLTAGE: + val = (regval >> data->config->bus_voltage_shift) * + data->config->bus_voltage_lsb; + val = DIV_ROUND_CLOSEST(val, 1000); + break; + case INA2XX_POWER: + val = regval * data->power_lsb_uW; + break; + case INA2XX_CURRENT: + /* signed register, result in mA */ + val = (s16)regval * data->current_lsb_uA; + val = DIV_ROUND_CLOSEST(val, 1000); + break; + case INA2XX_CALIBRATION: + val = regval; + break; + default: + /* programmer goofed */ + WARN_ON_ONCE(1); + val = 0; + break; + } + + return val; } /* - * Initialize the configuration and calibration registers. + * Read and convert register value from chip. If the register value is 0, + * check if the chip has been power cycled or reset. If so, re-initialize it. */ -static int ina2xx_init(struct ina2xx_data *data) -{ - int ret = regmap_write(data->regmap, INA2XX_CONFIG, - data->config->config_default); - if (ret < 0) - return ret; - - return ina2xx_calibrate(data); -} - -static int ina2xx_read_reg(struct device *dev, int reg, unsigned int *regval) +static int ina2xx_read_init(struct device *dev, int reg, long *val) { struct ina2xx_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + unsigned int regval; int ret, retry; - dev_dbg(dev, "Starting register %d read\n", reg); - for (retry = 5; retry; retry--) { - - ret = regmap_read(data->regmap, reg, regval); + ret = regmap_read(regmap, reg, ®val); if (ret < 0) return ret; - dev_dbg(dev, "read %d, val = 0x%04x\n", reg, *regval); - /* * If the current value in the calibration register is 0, the * power and current registers will also remain at 0. In case @@ -239,20 +267,19 @@ static int ina2xx_read_reg(struct device *dev, int reg, unsigned int *regval) * We do that extra read of the calibration register if there * is some hint of a chip reset. */ - if (*regval == 0) { + if (regval == 0) { unsigned int cal; - ret = regmap_read(data->regmap, INA2XX_CALIBRATION, - &cal); + ret = regmap_read_bypassed(regmap, INA2XX_CALIBRATION, &cal); if (ret < 0) return ret; if (cal == 0) { dev_warn(dev, "chip not calibrated, reinitializing\n"); - ret = ina2xx_init(data); - if (ret < 0) - return ret; + regcache_mark_dirty(regmap); + regcache_sync(regmap); + /* * Let's make sure the power and current * registers have been updated before trying @@ -262,6 +289,7 @@ static int ina2xx_read_reg(struct device *dev, int reg, unsigned int *regval) continue; } } + *val = ina2xx_get_value(data, reg, regval); return 0; } @@ -274,101 +302,31 @@ static int ina2xx_read_reg(struct device *dev, int reg, unsigned int *regval) return -ENODEV; } -static int ina2xx_get_value(struct ina2xx_data *data, u8 reg, - unsigned int regval) -{ - int val; - - switch (reg) { - case INA2XX_SHUNT_VOLTAGE: - /* signed register */ - val = DIV_ROUND_CLOSEST((s16)regval, data->config->shunt_div); - break; - case INA2XX_BUS_VOLTAGE: - val = (regval >> data->config->bus_voltage_shift) - * data->config->bus_voltage_lsb; - val = DIV_ROUND_CLOSEST(val, 1000); - break; - case INA2XX_POWER: - val = regval * data->power_lsb_uW; - break; - case INA2XX_CURRENT: - /* signed register, result in mA */ - val = (s16)regval * data->current_lsb_uA; - val = DIV_ROUND_CLOSEST(val, 1000); - break; - case INA2XX_CALIBRATION: - val = regval; - break; - default: - /* programmer goofed */ - WARN_ON_ONCE(1); - val = 0; - break; - } - - return val; -} - -static ssize_t ina2xx_value_show(struct device *dev, - struct device_attribute *da, char *buf) -{ - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct ina2xx_data *data = dev_get_drvdata(dev); - unsigned int regval; - - int err = ina2xx_read_reg(dev, attr->index, ®val); - - if (err < 0) - return err; - - return sysfs_emit(buf, "%d\n", ina2xx_get_value(data, attr->index, regval)); -} - -static int ina226_reg_to_alert(struct ina2xx_data *data, u8 bit, u16 regval) -{ - int reg; - - switch (bit) { - case INA226_SHUNT_OVER_VOLTAGE_BIT: - case INA226_SHUNT_UNDER_VOLTAGE_BIT: - reg = INA2XX_SHUNT_VOLTAGE; - break; - case INA226_BUS_OVER_VOLTAGE_BIT: - case INA226_BUS_UNDER_VOLTAGE_BIT: - reg = INA2XX_BUS_VOLTAGE; - break; - case INA226_POWER_OVER_LIMIT_BIT: - reg = INA2XX_POWER; - break; - default: - /* programmer goofed */ - WARN_ON_ONCE(1); - return 0; - } - - return ina2xx_get_value(data, reg, regval); -} - /* * Turns alert limit values into register values. * Opposite of the formula in ina2xx_get_value(). */ -static s16 ina226_alert_to_reg(struct ina2xx_data *data, u8 bit, int val) +static u16 ina226_alert_to_reg(struct ina2xx_data *data, int reg, long val) { - switch (bit) { - case INA226_SHUNT_OVER_VOLTAGE_BIT: - case INA226_SHUNT_UNDER_VOLTAGE_BIT: + switch (reg) { + case INA2XX_SHUNT_VOLTAGE: + val = clamp_val(val, 0, SHRT_MAX * data->config->shunt_div); val *= data->config->shunt_div; - return clamp_val(val, SHRT_MIN, SHRT_MAX); - case INA226_BUS_OVER_VOLTAGE_BIT: - case INA226_BUS_UNDER_VOLTAGE_BIT: + return clamp_val(val, 0, SHRT_MAX); + case INA2XX_BUS_VOLTAGE: + val = clamp_val(val, 0, 200000); val = (val * 1000) << data->config->bus_voltage_shift; val = DIV_ROUND_CLOSEST(val, data->config->bus_voltage_lsb); - return clamp_val(val, 0, SHRT_MAX); - case INA226_POWER_OVER_LIMIT_BIT: + return clamp_val(val, 0, USHRT_MAX); + case INA2XX_POWER: + val = clamp_val(val, 0, UINT_MAX - data->power_lsb_uW); val = DIV_ROUND_CLOSEST(val, data->power_lsb_uW); return clamp_val(val, 0, USHRT_MAX); + case INA2XX_CURRENT: + val = clamp_val(val, INT_MIN / 1000, INT_MAX / 1000); + /* signed register, result in mA */ + val = DIV_ROUND_CLOSEST(val * 1000, data->current_lsb_uA); + return clamp_val(val, SHRT_MIN, SHRT_MAX); default: /* programmer goofed */ WARN_ON_ONCE(1); @@ -376,45 +334,37 @@ static s16 ina226_alert_to_reg(struct ina2xx_data *data, u8 bit, int val) } } -static ssize_t ina226_alert_show(struct device *dev, - struct device_attribute *da, char *buf) +static int ina226_alert_limit_read(struct ina2xx_data *data, u32 mask, int reg, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct ina2xx_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; int regval; - int val = 0; int ret; mutex_lock(&data->config_lock); - ret = regmap_read(data->regmap, INA226_MASK_ENABLE, ®val); + ret = regmap_read(regmap, INA226_MASK_ENABLE, ®val); if (ret) goto abort; - if (regval & BIT(attr->index)) { - ret = regmap_read(data->regmap, INA226_ALERT_LIMIT, ®val); + if (regval & mask) { + ret = regmap_read(regmap, INA226_ALERT_LIMIT, ®val); if (ret) goto abort; - val = ina226_reg_to_alert(data, attr->index, regval); + *val = ina2xx_get_value(data, reg, regval); + } else { + *val = 0; } - - ret = sysfs_emit(buf, "%d\n", val); abort: mutex_unlock(&data->config_lock); return ret; } -static ssize_t ina226_alert_store(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) +static int ina226_alert_limit_write(struct ina2xx_data *data, u32 mask, int reg, long val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); - struct ina2xx_data *data = dev_get_drvdata(dev); - unsigned long val; + struct regmap *regmap = data->regmap; int ret; - ret = kstrtoul(buf, 10, &val); - if (ret < 0) - return ret; + if (val < 0) + return -EINVAL; /* * Clear all alerts first to avoid accidentally triggering ALERT pin @@ -422,217 +372,462 @@ static ssize_t ina226_alert_store(struct device *dev, * if the value is non-zero. */ mutex_lock(&data->config_lock); - ret = regmap_update_bits(data->regmap, INA226_MASK_ENABLE, + ret = regmap_update_bits(regmap, INA226_MASK_ENABLE, INA226_ALERT_CONFIG_MASK, 0); if (ret < 0) goto abort; - ret = regmap_write(data->regmap, INA226_ALERT_LIMIT, - ina226_alert_to_reg(data, attr->index, val)); + ret = regmap_write(regmap, INA226_ALERT_LIMIT, + ina226_alert_to_reg(data, reg, val)); if (ret < 0) goto abort; - if (val != 0) { - ret = regmap_update_bits(data->regmap, INA226_MASK_ENABLE, - INA226_ALERT_CONFIG_MASK, - BIT(attr->index)); - if (ret < 0) - goto abort; - } - - ret = count; + if (val) + ret = regmap_update_bits(regmap, INA226_MASK_ENABLE, + INA226_ALERT_CONFIG_MASK, mask); abort: mutex_unlock(&data->config_lock); return ret; } -static ssize_t ina226_alarm_show(struct device *dev, - struct device_attribute *da, char *buf) +static int ina2xx_chip_read(struct device *dev, u32 attr, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct ina2xx_data *data = dev_get_drvdata(dev); - int regval; - int alarm = 0; + u32 regval; + int ret; + + switch (attr) { + case hwmon_chip_update_interval: + ret = regmap_read(data->regmap, INA2XX_CONFIG, ®val); + if (ret) + return ret; + + *val = ina226_reg_to_interval(regval); + break; + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int ina226_alert_read(struct regmap *regmap, u32 mask, long *val) +{ + unsigned int regval; int ret; - ret = regmap_read(data->regmap, INA226_MASK_ENABLE, ®val); + ret = regmap_read_bypassed(regmap, INA226_MASK_ENABLE, ®val); if (ret) return ret; - alarm = (regval & BIT(attr->index)) && - (regval & INA226_ALERT_FUNCTION_FLAG); - return sysfs_emit(buf, "%d\n", alarm); + *val = (regval & mask) && (regval & INA226_ALERT_FUNCTION_FLAG); + + return 0; +} + +static int ina2xx_in_read(struct device *dev, u32 attr, int channel, long *val) +{ + int voltage_reg = channel ? INA2XX_BUS_VOLTAGE : INA2XX_SHUNT_VOLTAGE; + u32 under_voltage_mask = channel ? INA226_BUS_UNDER_VOLTAGE_MASK + : INA226_SHUNT_UNDER_VOLTAGE_MASK; + u32 over_voltage_mask = channel ? INA226_BUS_OVER_VOLTAGE_MASK + : INA226_SHUNT_OVER_VOLTAGE_MASK; + struct ina2xx_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + unsigned int regval; + int ret; + + switch (attr) { + case hwmon_in_input: + ret = regmap_read(regmap, voltage_reg, ®val); + if (ret) + return ret; + *val = ina2xx_get_value(data, voltage_reg, regval); + break; + case hwmon_in_lcrit: + return ina226_alert_limit_read(data, under_voltage_mask, + voltage_reg, val); + case hwmon_in_crit: + return ina226_alert_limit_read(data, over_voltage_mask, + voltage_reg, val); + case hwmon_in_lcrit_alarm: + return ina226_alert_read(regmap, under_voltage_mask, val); + case hwmon_in_crit_alarm: + return ina226_alert_read(regmap, over_voltage_mask, val); + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int ina2xx_power_read(struct device *dev, u32 attr, long *val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_power_input: + return ina2xx_read_init(dev, INA2XX_POWER, val); + case hwmon_power_crit: + return ina226_alert_limit_read(data, INA226_POWER_OVER_LIMIT_MASK, + INA2XX_POWER, val); + case hwmon_power_crit_alarm: + return ina226_alert_read(data->regmap, INA226_POWER_OVER_LIMIT_MASK, val); + default: + return -EOPNOTSUPP; + } +} + +static int ina2xx_curr_read(struct device *dev, u32 attr, long *val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + struct regmap *regmap = data->regmap; + unsigned int regval; + int ret; + + /* + * While the chips supported by this driver do not directly support + * current limits, they do support setting shunt voltage limits. + * The shunt voltage divided by the shunt resistor value is the current. + * On top of that, calibration values are set such that in the shunt + * voltage register and the current register report the same values. + * That means we can report and configure current limits based on shunt + * voltage limits. + */ + switch (attr) { + case hwmon_curr_input: + /* + * Since the shunt voltage and the current register report the + * same values when the chip is calibrated, we can calculate + * the current directly from the shunt voltage without relying + * on chip calibration. + */ + ret = regmap_read(regmap, INA2XX_SHUNT_VOLTAGE, ®val); + if (ret) + return ret; + *val = ina2xx_get_value(data, INA2XX_CURRENT, regval); + return 0; + case hwmon_curr_lcrit: + return ina226_alert_limit_read(data, INA226_SHUNT_UNDER_VOLTAGE_MASK, + INA2XX_CURRENT, val); + case hwmon_curr_crit: + return ina226_alert_limit_read(data, INA226_SHUNT_OVER_VOLTAGE_MASK, + INA2XX_CURRENT, val); + case hwmon_curr_lcrit_alarm: + return ina226_alert_read(regmap, INA226_SHUNT_UNDER_VOLTAGE_MASK, val); + case hwmon_curr_crit_alarm: + return ina226_alert_read(regmap, INA226_SHUNT_OVER_VOLTAGE_MASK, val); + default: + return -EOPNOTSUPP; + } +} + +static int ina2xx_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + switch (type) { + case hwmon_chip: + return ina2xx_chip_read(dev, attr, val); + case hwmon_in: + return ina2xx_in_read(dev, attr, channel, val); + case hwmon_power: + return ina2xx_power_read(dev, attr, val); + case hwmon_curr: + return ina2xx_curr_read(dev, attr, val); + default: + return -EOPNOTSUPP; + } +} + +static int ina2xx_chip_write(struct device *dev, u32 attr, long val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_chip_update_interval: + return regmap_update_bits(data->regmap, INA2XX_CONFIG, + INA226_AVG_RD_MASK, + ina226_interval_to_reg(val)); + default: + return -EOPNOTSUPP; + } +} + +static int ina2xx_in_write(struct device *dev, u32 attr, int channel, long val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_in_lcrit: + return ina226_alert_limit_write(data, + channel ? INA226_BUS_UNDER_VOLTAGE_MASK : INA226_SHUNT_UNDER_VOLTAGE_MASK, + channel ? INA2XX_BUS_VOLTAGE : INA2XX_SHUNT_VOLTAGE, + val); + case hwmon_in_crit: + return ina226_alert_limit_write(data, + channel ? INA226_BUS_OVER_VOLTAGE_MASK : INA226_SHUNT_OVER_VOLTAGE_MASK, + channel ? INA2XX_BUS_VOLTAGE : INA2XX_SHUNT_VOLTAGE, + val); + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int ina2xx_power_write(struct device *dev, u32 attr, long val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_power_crit: + return ina226_alert_limit_write(data, INA226_POWER_OVER_LIMIT_MASK, + INA2XX_POWER, val); + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int ina2xx_curr_write(struct device *dev, u32 attr, long val) +{ + struct ina2xx_data *data = dev_get_drvdata(dev); + + switch (attr) { + case hwmon_curr_lcrit: + return ina226_alert_limit_write(data, INA226_SHUNT_UNDER_VOLTAGE_MASK, + INA2XX_CURRENT, val); + case hwmon_curr_crit: + return ina226_alert_limit_write(data, INA226_SHUNT_OVER_VOLTAGE_MASK, + INA2XX_CURRENT, val); + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int ina2xx_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + switch (type) { + case hwmon_chip: + return ina2xx_chip_write(dev, attr, val); + case hwmon_in: + return ina2xx_in_write(dev, attr, channel, val); + case hwmon_power: + return ina2xx_power_write(dev, attr, val); + case hwmon_curr: + return ina2xx_curr_write(dev, attr, val); + default: + return -EOPNOTSUPP; + } +} + +static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + const struct ina2xx_data *data = _data; + enum ina2xx_ids chip = data->chip; + + switch (type) { + case hwmon_in: + switch (attr) { + case hwmon_in_input: + return 0444; + case hwmon_in_lcrit: + case hwmon_in_crit: + if (chip == ina226) + return 0644; + break; + case hwmon_in_lcrit_alarm: + case hwmon_in_crit_alarm: + if (chip == ina226) + return 0444; + break; + default: + break; + } + break; + case hwmon_curr: + switch (attr) { + case hwmon_curr_input: + return 0444; + case hwmon_curr_lcrit: + case hwmon_curr_crit: + if (chip == ina226) + return 0644; + break; + case hwmon_curr_lcrit_alarm: + case hwmon_curr_crit_alarm: + if (chip == ina226) + return 0444; + break; + default: + break; + } + break; + case hwmon_power: + switch (attr) { + case hwmon_power_input: + return 0444; + case hwmon_power_crit: + if (chip == ina226) + return 0644; + break; + case hwmon_power_crit_alarm: + if (chip == ina226) + return 0444; + break; + default: + break; + } + break; + case hwmon_chip: + switch (attr) { + case hwmon_chip_update_interval: + if (chip == ina226) + return 0644; + break; + default: + break; + } + break; + default: + break; + } + return 0; } +static const struct hwmon_channel_info * const ina2xx_info[] = { + HWMON_CHANNEL_INFO(chip, + HWMON_C_UPDATE_INTERVAL), + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | HWMON_I_CRIT | HWMON_I_CRIT_ALARM | + HWMON_I_LCRIT | HWMON_I_LCRIT_ALARM, + HWMON_I_INPUT | HWMON_I_CRIT | HWMON_I_CRIT_ALARM | + HWMON_I_LCRIT | HWMON_I_LCRIT_ALARM + ), + HWMON_CHANNEL_INFO(curr, HWMON_C_INPUT | HWMON_C_CRIT | HWMON_C_CRIT_ALARM | + HWMON_C_LCRIT | HWMON_C_LCRIT_ALARM), + HWMON_CHANNEL_INFO(power, + HWMON_P_INPUT | HWMON_P_CRIT | HWMON_P_CRIT_ALARM), + NULL +}; + +static const struct hwmon_ops ina2xx_hwmon_ops = { + .is_visible = ina2xx_is_visible, + .read = ina2xx_read, + .write = ina2xx_write, +}; + +static const struct hwmon_chip_info ina2xx_chip_info = { + .ops = &ina2xx_hwmon_ops, + .info = ina2xx_info, +}; + +/* shunt resistance */ + /* * In order to keep calibration register value fixed, the product * of current_lsb and shunt_resistor should also be fixed and equal * to shunt_voltage_lsb = 1 / shunt_div multiplied by 10^9 in order * to keep the scale. */ -static int ina2xx_set_shunt(struct ina2xx_data *data, long val) +static int ina2xx_set_shunt(struct ina2xx_data *data, unsigned long val) { unsigned int dividend = DIV_ROUND_CLOSEST(1000000000, data->config->shunt_div); - if (val <= 0 || val > dividend) + if (!val || val > dividend) return -EINVAL; - mutex_lock(&data->config_lock); data->rshunt = val; data->current_lsb_uA = DIV_ROUND_CLOSEST(dividend, val); data->power_lsb_uW = data->config->power_lsb_factor * data->current_lsb_uA; - mutex_unlock(&data->config_lock); return 0; } -static ssize_t ina2xx_shunt_show(struct device *dev, - struct device_attribute *da, char *buf) +static ssize_t shunt_resistor_show(struct device *dev, + struct device_attribute *da, char *buf) { struct ina2xx_data *data = dev_get_drvdata(dev); return sysfs_emit(buf, "%li\n", data->rshunt); } -static ssize_t ina2xx_shunt_store(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) +static ssize_t shunt_resistor_store(struct device *dev, + struct device_attribute *da, + const char *buf, size_t count) { + struct ina2xx_data *data = dev_get_drvdata(dev); unsigned long val; int status; - struct ina2xx_data *data = dev_get_drvdata(dev); status = kstrtoul(buf, 10, &val); if (status < 0) return status; + mutex_lock(&data->config_lock); status = ina2xx_set_shunt(data, val); + mutex_unlock(&data->config_lock); if (status < 0) return status; return count; } -static ssize_t ina226_interval_store(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) -{ - struct ina2xx_data *data = dev_get_drvdata(dev); - unsigned long val; - int status; +static DEVICE_ATTR_RW(shunt_resistor); - status = kstrtoul(buf, 10, &val); - if (status < 0) - return status; - - if (val > INT_MAX || val == 0) - return -EINVAL; - - status = regmap_update_bits(data->regmap, INA2XX_CONFIG, - INA226_AVG_RD_MASK, - ina226_interval_to_reg(val)); - if (status < 0) - return status; - - return count; -} +/* pointers to created device attributes */ +static struct attribute *ina2xx_attrs[] = { + &dev_attr_shunt_resistor.attr, + NULL, +}; +ATTRIBUTE_GROUPS(ina2xx); -static ssize_t ina226_interval_show(struct device *dev, - struct device_attribute *da, char *buf) +/* + * Initialize chip + */ +static int ina2xx_init(struct device *dev, struct ina2xx_data *data) { - struct ina2xx_data *data = dev_get_drvdata(dev); - int status; - unsigned int regval; - - status = regmap_read(data->regmap, INA2XX_CONFIG, ®val); - if (status) - return status; - - return sysfs_emit(buf, "%d\n", ina226_reg_to_interval(regval)); -} - -/* shunt voltage */ -static SENSOR_DEVICE_ATTR_RO(in0_input, ina2xx_value, INA2XX_SHUNT_VOLTAGE); -/* shunt voltage over/under voltage alert setting and alarm */ -static SENSOR_DEVICE_ATTR_RW(in0_crit, ina226_alert, - INA226_SHUNT_OVER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RW(in0_lcrit, ina226_alert, - INA226_SHUNT_UNDER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RO(in0_crit_alarm, ina226_alarm, - INA226_SHUNT_OVER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RO(in0_lcrit_alarm, ina226_alarm, - INA226_SHUNT_UNDER_VOLTAGE_BIT); - -/* bus voltage */ -static SENSOR_DEVICE_ATTR_RO(in1_input, ina2xx_value, INA2XX_BUS_VOLTAGE); -/* bus voltage over/under voltage alert setting and alarm */ -static SENSOR_DEVICE_ATTR_RW(in1_crit, ina226_alert, - INA226_BUS_OVER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RW(in1_lcrit, ina226_alert, - INA226_BUS_UNDER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RO(in1_crit_alarm, ina226_alarm, - INA226_BUS_OVER_VOLTAGE_BIT); -static SENSOR_DEVICE_ATTR_RO(in1_lcrit_alarm, ina226_alarm, - INA226_BUS_UNDER_VOLTAGE_BIT); - -/* calculated current */ -static SENSOR_DEVICE_ATTR_RO(curr1_input, ina2xx_value, INA2XX_CURRENT); - -/* calculated power */ -static SENSOR_DEVICE_ATTR_RO(power1_input, ina2xx_value, INA2XX_POWER); -/* over-limit power alert setting and alarm */ -static SENSOR_DEVICE_ATTR_RW(power1_crit, ina226_alert, - INA226_POWER_OVER_LIMIT_BIT); -static SENSOR_DEVICE_ATTR_RO(power1_crit_alarm, ina226_alarm, - INA226_POWER_OVER_LIMIT_BIT); + struct regmap *regmap = data->regmap; + u32 shunt; + int ret; -/* shunt resistance */ -static SENSOR_DEVICE_ATTR_RW(shunt_resistor, ina2xx_shunt, INA2XX_CALIBRATION); + if (device_property_read_u32(dev, "shunt-resistor", &shunt) < 0) + shunt = INA2XX_RSHUNT_DEFAULT; -/* update interval (ina226 only) */ -static SENSOR_DEVICE_ATTR_RW(update_interval, ina226_interval, 0); + ret = ina2xx_set_shunt(data, shunt); + if (ret < 0) + return ret; -/* pointers to created device attributes */ -static struct attribute *ina2xx_attrs[] = { - &sensor_dev_attr_in0_input.dev_attr.attr, - &sensor_dev_attr_in1_input.dev_attr.attr, - &sensor_dev_attr_curr1_input.dev_attr.attr, - &sensor_dev_attr_power1_input.dev_attr.attr, - &sensor_dev_attr_shunt_resistor.dev_attr.attr, - NULL, -}; + ret = regmap_write(regmap, INA2XX_CONFIG, data->config->config_default); + if (ret < 0) + return ret; -static const struct attribute_group ina2xx_group = { - .attrs = ina2xx_attrs, -}; + if (data->chip == ina226) { + bool active_high = device_property_read_bool(dev, "ti,alert-polarity-active-high"); -static struct attribute *ina226_attrs[] = { - &sensor_dev_attr_in0_crit.dev_attr.attr, - &sensor_dev_attr_in0_lcrit.dev_attr.attr, - &sensor_dev_attr_in0_crit_alarm.dev_attr.attr, - &sensor_dev_attr_in0_lcrit_alarm.dev_attr.attr, - &sensor_dev_attr_in1_crit.dev_attr.attr, - &sensor_dev_attr_in1_lcrit.dev_attr.attr, - &sensor_dev_attr_in1_crit_alarm.dev_attr.attr, - &sensor_dev_attr_in1_lcrit_alarm.dev_attr.attr, - &sensor_dev_attr_power1_crit.dev_attr.attr, - &sensor_dev_attr_power1_crit_alarm.dev_attr.attr, - &sensor_dev_attr_update_interval.dev_attr.attr, - NULL, -}; + regmap_update_bits(regmap, INA226_MASK_ENABLE, + INA226_ALERT_LATCH_ENABLE | INA226_ALERT_POLARITY, + INA226_ALERT_LATCH_ENABLE | + FIELD_PREP(INA226_ALERT_POLARITY, active_high)); + } -static const struct attribute_group ina226_group = { - .attrs = ina226_attrs, -}; + /* + * Calibration register is set to the best value, which eliminates + * truncation errors on calculating current register in hardware. + * According to datasheet (eq. 3) the best values are 2048 for + * ina226 and 4096 for ina219. They are hardcoded as calibration_value. + */ + return regmap_write(regmap, INA2XX_CALIBRATION, + data->config->calibration_value); +} static int ina2xx_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct ina2xx_data *data; struct device *hwmon_dev; - u32 val; - int ret, group = 0; enum ina2xx_ids chip; + int ret; chip = (uintptr_t)i2c_get_match_data(client); @@ -642,21 +837,9 @@ static int ina2xx_probe(struct i2c_client *client) /* set the device type */ data->config = &ina2xx_config[chip]; + data->chip = chip; mutex_init(&data->config_lock); - if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0) { - struct ina2xx_platform_data *pdata = dev_get_platdata(dev); - - if (pdata) - val = pdata->shunt_uohms; - else - val = INA2XX_RSHUNT_DEFAULT; - } - - ina2xx_set_shunt(data, val); - - ina2xx_regmap_config.max_register = data->config->registers; - data->regmap = devm_regmap_init_i2c(client, &ina2xx_regmap_config); if (IS_ERR(data->regmap)) { dev_err(dev, "failed to allocate register map\n"); @@ -667,37 +850,13 @@ static int ina2xx_probe(struct i2c_client *client) if (ret) return dev_err_probe(dev, ret, "failed to enable vs regulator\n"); - if (chip == ina226) { - if (of_property_read_bool(dev->of_node, "ti,alert-polarity-active-high")) { - ret = ina2xx_set_alert_polarity(data, - INA226_ALERT_POL_HIGH); - if (ret < 0) { - return dev_err_probe(dev, ret, - "failed to set alert polarity active high\n"); - } - } else { - /* Set default value i.e active low */ - ret = ina2xx_set_alert_polarity(data, - INA226_ALERT_POL_LOW); - if (ret < 0) { - return dev_err_probe(dev, ret, - "failed to set alert polarity active low\n"); - } - } - } - - ret = ina2xx_init(data); - if (ret < 0) { - dev_err(dev, "error configuring the device: %d\n", ret); - return -ENODEV; - } - - data->groups[group++] = &ina2xx_group; - if (chip == ina226) - data->groups[group++] = &ina226_group; + ret = ina2xx_init(dev, data); + if (ret < 0) + return dev_err_probe(dev, ret, "failed to configure device\n"); - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - data, data->groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + data, &ina2xx_chip_info, + ina2xx_groups); if (IS_ERR(hwmon_dev)) return PTR_ERR(hwmon_dev); diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c index f0053f8..1bf479a 100644 --- a/drivers/hwmon/ina3221.c +++ b/drivers/hwmon/ina3221.c @@ -813,7 +813,6 @@ static int ina3221_probe_child_from_dt(struct device *dev, static int ina3221_probe_from_dt(struct device *dev, struct ina3221_data *ina) { const struct device_node *np = dev->of_node; - struct device_node *child; int ret; /* Compatible with non-DT platforms */ @@ -822,12 +821,10 @@ static int ina3221_probe_from_dt(struct device *dev, struct ina3221_data *ina) ina->single_shot = of_property_read_bool(np, "ti,single-shot"); - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { ret = ina3221_probe_child_from_dt(dev, child, ina); - if (ret) { - of_node_put(child); + if (ret) return ret; - } } return 0; diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c index f96b91e..7dc19c5 100644 --- a/drivers/hwmon/k10temp.c +++ b/drivers/hwmon/k10temp.c @@ -438,16 +438,21 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id) data->disp_negative = true; } - if (boot_cpu_data.x86 == 0x15 && + data->is_zen = cpu_feature_enabled(X86_FEATURE_ZEN); + if (data->is_zen) { + data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK; + data->read_tempreg = read_tempreg_nb_zen; + } else if (boot_cpu_data.x86 == 0x15 && ((boot_cpu_data.x86_model & 0xf0) == 0x60 || (boot_cpu_data.x86_model & 0xf0) == 0x70)) { data->read_htcreg = read_htcreg_nb_f15; data->read_tempreg = read_tempreg_nb_f15; - } else if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) { - data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK; - data->read_tempreg = read_tempreg_nb_zen; - data->is_zen = true; + } else { + data->read_htcreg = read_htcreg_pci; + data->read_tempreg = read_tempreg_pci; + } + if (boot_cpu_data.x86 == 0x17 || boot_cpu_data.x86 == 0x18) { switch (boot_cpu_data.x86_model) { case 0x1: /* Zen */ case 0x8: /* Zen+ */ @@ -469,10 +474,6 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id) break; } } else if (boot_cpu_data.x86 == 0x19) { - data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK; - data->read_tempreg = read_tempreg_nb_zen; - data->is_zen = true; - switch (boot_cpu_data.x86_model) { case 0x0 ... 0x1: /* Zen3 SP3/TR */ case 0x8: /* Zen3 TR Chagall */ @@ -496,13 +497,6 @@ static int k10temp_probe(struct pci_dev *pdev, const struct pci_device_id *id) k10temp_get_ccd_support(data, 12); break; } - } else if (boot_cpu_data.x86 == 0x1a) { - data->temp_adjust_mask = ZEN_CUR_TEMP_RANGE_SEL_MASK; - data->read_tempreg = read_tempreg_nb_zen; - data->is_zen = true; - } else { - data->read_htcreg = read_htcreg_pci; - data->read_tempreg = read_tempreg_pci; } for (i = 0; i < ARRAY_SIZE(tctl_offset_table); i++) { diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c index ca5c52b..511d95a 100644 --- a/drivers/hwmon/lm90.c +++ b/drivers/hwmon/lm90.c @@ -2674,19 +2674,16 @@ static int lm90_parse_dt_channel_info(struct i2c_client *client, struct lm90_data *data) { int err; - struct device_node *child; struct device *dev = &client->dev; const struct device_node *np = dev->of_node; - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { if (strcmp(child->name, "channel")) continue; err = lm90_probe_channel_from_dt(client, child, data); - if (err) { - of_node_put(child); + if (err) return err; - } } return 0; diff --git a/drivers/hwmon/lm92.c b/drivers/hwmon/lm92.c index 46579a3..0be439b 100644 --- a/drivers/hwmon/lm92.c +++ b/drivers/hwmon/lm92.c @@ -27,15 +27,14 @@ * with the LM92. */ -#include -#include -#include -#include -#include -#include #include +#include +#include +#include +#include #include -#include +#include +#include /* * The LM92 and MAX6635 have 2 two-state pins for address selection, @@ -43,8 +42,6 @@ */ static const unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b, I2C_CLIENT_END }; -enum chips { lm92, max6635 }; - /* The LM92 registers */ #define LM92_REG_CONFIG 0x01 /* 8-bit, RW */ #define LM92_REG_TEMP 0x00 /* 16-bit, RO */ @@ -66,10 +63,10 @@ static inline int TEMP_FROM_REG(s16 reg) return reg / 8 * 625 / 10; } -static inline s16 TEMP_TO_REG(long val) +static inline s16 TEMP_TO_REG(long val, int resolution) { val = clamp_val(val, -60000, 160000); - return val * 10 / 625 * 8; + return DIV_ROUND_CLOSEST(val << (resolution - 9), 1000) << (16 - resolution); } /* Alarm flags are stored in the 3 LSB of the temperature register */ @@ -78,239 +75,336 @@ static inline u8 ALARMS_FROM_REG(s16 reg) return reg & 0x0007; } -enum temp_index { - t_input, - t_crit, - t_min, - t_max, - t_hyst, - t_num_regs -}; - -static const u8 regs[t_num_regs] = { - [t_input] = LM92_REG_TEMP, - [t_crit] = LM92_REG_TEMP_CRIT, - [t_min] = LM92_REG_TEMP_LOW, - [t_max] = LM92_REG_TEMP_HIGH, - [t_hyst] = LM92_REG_TEMP_HYST, -}; - /* Client data (each client gets its own) */ struct lm92_data { - struct i2c_client *client; + struct regmap *regmap; struct mutex update_lock; - bool valid; /* false until following fields are valid */ - unsigned long last_updated; /* in jiffies */ - - /* registers values */ - s16 temp[t_num_regs]; /* index with enum temp_index */ + int resolution; }; -/* - * Sysfs attributes and callback functions - */ - -static struct lm92_data *lm92_update_device(struct device *dev) +static int lm92_temp_read(struct lm92_data *data, u32 attr, int channel, long *val) { - struct lm92_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - int i; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ) || - !data->valid) { - dev_dbg(&client->dev, "Updating lm92 data\n"); - for (i = 0; i < t_num_regs; i++) { - data->temp[i] = - i2c_smbus_read_word_swapped(client, regs[i]); - } - data->last_updated = jiffies; - data->valid = true; + int reg = -1, hyst_reg = -1, alarm_bit = 0; + struct regmap *regmap = data->regmap; + u32 temp; + int ret; + + switch (attr) { + case hwmon_temp_input: + reg = LM92_REG_TEMP; + break; + case hwmon_temp_min: + reg = LM92_REG_TEMP_LOW; + break; + case hwmon_temp_max: + reg = LM92_REG_TEMP_HIGH; + break; + case hwmon_temp_crit: + reg = LM92_REG_TEMP_CRIT; + break; + case hwmon_temp_min_hyst: + hyst_reg = LM92_REG_TEMP_LOW; + break; + case hwmon_temp_max_hyst: + hyst_reg = LM92_REG_TEMP_HIGH; + break; + case hwmon_temp_crit_hyst: + hyst_reg = LM92_REG_TEMP_CRIT; + break; + case hwmon_temp_min_alarm: + alarm_bit = 0; + break; + case hwmon_temp_max_alarm: + alarm_bit = 1; + break; + case hwmon_temp_crit_alarm: + alarm_bit = 2; + break; + default: + return -EOPNOTSUPP; } - - mutex_unlock(&data->update_lock); - - return data; + if (reg >= 0) { + ret = regmap_read(regmap, reg, &temp); + if (ret < 0) + return ret; + *val = TEMP_FROM_REG(temp); + } else if (hyst_reg >= 0) { + u32 regs[2] = { hyst_reg, LM92_REG_TEMP_HYST }; + u16 regvals[2]; + + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); + if (ret) + return ret; + if (attr == hwmon_temp_min_hyst) + *val = TEMP_FROM_REG(regvals[0]) + TEMP_FROM_REG(regvals[1]); + else + *val = TEMP_FROM_REG(regvals[0]) - TEMP_FROM_REG(regvals[1]); + } else { + ret = regmap_read(regmap, LM92_REG_TEMP, &temp); + if (ret) + return ret; + *val = !!(temp & BIT(alarm_bit)); + } + return 0; } -static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, - char *buf) +static int lm92_chip_read(struct lm92_data *data, u32 attr, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct lm92_data *data = lm92_update_device(dev); - - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index])); + u32 temp; + int ret; + + switch (attr) { + case hwmon_chip_alarms: + ret = regmap_read(data->regmap, LM92_REG_TEMP, &temp); + if (ret) + return ret; + *val = ALARMS_FROM_REG(temp); + break; + default: + return -EOPNOTSUPP; + } + return 0; } -static ssize_t temp_store(struct device *dev, - struct device_attribute *devattr, const char *buf, - size_t count) +static int lm92_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm92_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - int nr = attr->index; - long val; - int err; - - err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->temp[nr] = TEMP_TO_REG(val); - i2c_smbus_write_word_swapped(client, regs[nr], data->temp[nr]); - mutex_unlock(&data->update_lock); - return count; -} -static ssize_t temp_hyst_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct lm92_data *data = lm92_update_device(dev); - - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[attr->index]) - - TEMP_FROM_REG(data->temp[t_hyst])); + switch (type) { + case hwmon_chip: + return lm92_chip_read(data, attr, val); + case hwmon_temp: + return lm92_temp_read(data, attr, channel, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t temp1_min_hyst_show(struct device *dev, - struct device_attribute *attr, char *buf) +static int lm92_temp_write(struct lm92_data *data, u32 attr, long val) { - struct lm92_data *data = lm92_update_device(dev); - - return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[t_min]) - + TEMP_FROM_REG(data->temp[t_hyst])); + struct regmap *regmap = data->regmap; + int reg, err; + u32 temp; + + switch (attr) { + case hwmon_temp_min: + reg = LM92_REG_TEMP_LOW; + break; + case hwmon_temp_max: + reg = LM92_REG_TEMP_HIGH; + break; + case hwmon_temp_crit: + reg = LM92_REG_TEMP_CRIT; + break; + case hwmon_temp_crit_hyst: + val = clamp_val(val, -120000, 220000); + mutex_lock(&data->update_lock); + err = regmap_read(regmap, LM92_REG_TEMP_CRIT, &temp); + if (err) + goto unlock; + val = TEMP_TO_REG(TEMP_FROM_REG(temp) - val, data->resolution); + err = regmap_write(regmap, LM92_REG_TEMP_HYST, val); +unlock: + mutex_unlock(&data->update_lock); + return err; + default: + return -EOPNOTSUPP; + } + return regmap_write(regmap, reg, TEMP_TO_REG(val, data->resolution)); } -static ssize_t temp_hyst_store(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count) +static int lm92_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct lm92_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - long val; - int err; - err = kstrtol(buf, 10, &val); - if (err) - return err; - - val = clamp_val(val, -120000, 220000); - mutex_lock(&data->update_lock); - data->temp[t_hyst] = - TEMP_TO_REG(TEMP_FROM_REG(data->temp[attr->index]) - val); - i2c_smbus_write_word_swapped(client, LM92_REG_TEMP_HYST, - data->temp[t_hyst]); - mutex_unlock(&data->update_lock); - return count; + switch (type) { + case hwmon_temp: + return lm92_temp_write(data, attr, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, - char *buf) +static umode_t lm92_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) { - struct lm92_data *data = lm92_update_device(dev); - - return sprintf(buf, "%d\n", ALARMS_FROM_REG(data->temp[t_input])); + switch (type) { + case hwmon_chip: + switch (attr) { + case hwmon_chip_alarms: + return 0444; + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp_min: + case hwmon_temp_max: + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + return 0644; + case hwmon_temp_input: + case hwmon_temp_min_hyst: + case hwmon_temp_max_hyst: + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_crit_alarm: + return 0444; + default: + break; + } + break; + default: + break; + } + return 0; } -static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int bitnr = to_sensor_dev_attr(attr)->index; - struct lm92_data *data = lm92_update_device(dev); - return sprintf(buf, "%d\n", (data->temp[t_input] >> bitnr) & 1); -} +static const struct hwmon_channel_info * const lm92_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_ALARMS), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | + HWMON_T_MIN | HWMON_T_MIN_HYST | + HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_CRIT_ALARM), + NULL +}; -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, t_input); -static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp, t_crit); -static SENSOR_DEVICE_ATTR_RW(temp1_crit_hyst, temp_hyst, t_crit); -static SENSOR_DEVICE_ATTR_RW(temp1_min, temp, t_min); -static DEVICE_ATTR_RO(temp1_min_hyst); -static SENSOR_DEVICE_ATTR_RW(temp1_max, temp, t_max); -static SENSOR_DEVICE_ATTR_RO(temp1_max_hyst, temp_hyst, t_max); -static DEVICE_ATTR_RO(alarms); -static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 2); -static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, alarm, 0); -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 1); +static const struct hwmon_ops lm92_hwmon_ops = { + .is_visible = lm92_is_visible, + .read = lm92_read, + .write = lm92_write, +}; + +static const struct hwmon_chip_info lm92_chip_info = { + .ops = &lm92_hwmon_ops, + .info = lm92_info, +}; /* * Detection and registration */ -static void lm92_init_client(struct i2c_client *client) +static int lm92_init_client(struct regmap *regmap) { - u8 config; - - /* Start the conversions if needed */ - config = i2c_smbus_read_byte_data(client, LM92_REG_CONFIG); - if (config & 0x01) - i2c_smbus_write_byte_data(client, LM92_REG_CONFIG, - config & 0xFE); + return regmap_clear_bits(regmap, LM92_REG_CONFIG, 0x01); } -static struct attribute *lm92_attrs[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_crit.dev_attr.attr, - &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &dev_attr_temp1_min_hyst.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &dev_attr_alarms.attr, - &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - NULL -}; -ATTRIBUTE_GROUPS(lm92); - /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm92_detect(struct i2c_client *new_client, struct i2c_board_info *info) { struct i2c_adapter *adapter = new_client->adapter; - u8 config; - u16 man_id; + u8 config_addr = LM92_REG_CONFIG; + u8 man_id_addr = LM92_REG_MAN_ID; + int i, regval; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) return -ENODEV; - config = i2c_smbus_read_byte_data(new_client, LM92_REG_CONFIG); - man_id = i2c_smbus_read_word_data(new_client, LM92_REG_MAN_ID); - - if ((config & 0xe0) == 0x00 && man_id == 0x0180) - pr_info("lm92: Found National Semiconductor LM92 chip\n"); - else - return -ENODEV; + /* + * Register values repeat with multiples of 8. + * Read twice to improve detection accuracy. + */ + for (i = 0; i < 2; i++) { + regval = i2c_smbus_read_word_data(new_client, man_id_addr); + if (regval != 0x0180) + return -ENODEV; + regval = i2c_smbus_read_byte_data(new_client, config_addr); + if (regval < 0 || (regval & 0xe0)) + return -ENODEV; + config_addr += 8; + man_id_addr += 8; + } strscpy(info->type, "lm92", I2C_NAME_SIZE); return 0; } -static int lm92_probe(struct i2c_client *new_client) +/* regmap */ + +static int lm92_reg_read(void *context, unsigned int reg, unsigned int *val) +{ + int ret; + + if (reg == LM92_REG_CONFIG) + ret = i2c_smbus_read_byte_data(context, reg); + else + ret = i2c_smbus_read_word_swapped(context, reg); + if (ret < 0) + return ret; + + *val = ret; + return 0; +} + +static int lm92_reg_write(void *context, unsigned int reg, unsigned int val) +{ + if (reg == LM92_REG_CONFIG) + return i2c_smbus_write_byte_data(context, LM92_REG_CONFIG, val); + + return i2c_smbus_write_word_swapped(context, reg, val); +} + +static bool lm92_regmap_is_volatile(struct device *dev, unsigned int reg) +{ + return reg == LM92_REG_TEMP; +} + +static bool lm92_regmap_is_writeable(struct device *dev, unsigned int reg) { + return reg >= LM92_REG_CONFIG; +} + +static const struct regmap_config lm92_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .max_register = LM92_REG_TEMP_HIGH, + .cache_type = REGCACHE_MAPLE, + .volatile_reg = lm92_regmap_is_volatile, + .writeable_reg = lm92_regmap_is_writeable, +}; + +static const struct regmap_bus lm92_regmap_bus = { + .reg_write = lm92_reg_write, + .reg_read = lm92_reg_read, +}; + +static int lm92_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; struct device *hwmon_dev; struct lm92_data *data; + struct regmap *regmap; + int err; + + regmap = devm_regmap_init(dev, &lm92_regmap_bus, client, + &lm92_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); - data = devm_kzalloc(&new_client->dev, sizeof(struct lm92_data), - GFP_KERNEL); + data = devm_kzalloc(dev, sizeof(struct lm92_data), GFP_KERNEL); if (!data) return -ENOMEM; - data->client = new_client; + data->regmap = regmap; + data->resolution = (unsigned long)i2c_get_match_data(client); mutex_init(&data->update_lock); /* Initialize the chipset */ - lm92_init_client(new_client); + err = lm92_init_client(regmap); + if (err) + return err; - hwmon_dev = devm_hwmon_device_register_with_groups(&new_client->dev, - new_client->name, - data, lm92_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &lm92_chip_info, NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } @@ -318,9 +412,10 @@ static int lm92_probe(struct i2c_client *new_client) * Module and driver stuff */ +/* .driver_data is limit register resolution */ static const struct i2c_device_id lm92_id[] = { - { "lm92", lm92 }, - { "max6635", max6635 }, + { "lm92", 13 }, + { "max6635", 9 }, { } }; MODULE_DEVICE_TABLE(i2c, lm92_id); diff --git a/drivers/hwmon/lm95234.c b/drivers/hwmon/lm95234.c index 9a7afdb..7da6c8f 100644 --- a/drivers/hwmon/lm95234.c +++ b/drivers/hwmon/lm95234.c @@ -8,16 +8,15 @@ * Copyright (C) 2008, 2010 Davide Rizzo */ -#include +#include +#include +#include #include +#include #include -#include -#include -#include -#include -#include #include -#include +#include +#include #define DRVNAME "lm95234" @@ -32,6 +31,8 @@ static const unsigned short normal_i2c[] = { #define LM95234_REG_STATUS 0x02 #define LM95234_REG_CONFIG 0x03 #define LM95234_REG_CONVRATE 0x04 +#define LM95234_REG_ENABLE 0x05 +#define LM95234_REG_FILTER 0x06 #define LM95234_REG_STS_FAULT 0x07 #define LM95234_REG_STS_TCRIT1 0x08 #define LM95234_REG_STS_TCRIT2 0x09 @@ -52,541 +53,372 @@ static const unsigned short normal_i2c[] = { /* Client data (each client gets its own) */ struct lm95234_data { - struct i2c_client *client; - const struct attribute_group *groups[3]; + struct regmap *regmap; struct mutex update_lock; - unsigned long last_updated, interval; /* in jiffies */ - bool valid; /* false until following fields are valid */ - /* registers values */ - int temp[5]; /* temperature (signed) */ - u32 status; /* fault/alarm status */ - u8 tcrit1[5]; /* critical temperature limit */ - u8 tcrit2[2]; /* high temperature limit */ - s8 toffset[4]; /* remote temperature offset */ - u8 thyst; /* common hysteresis */ - - u8 sensor_type; /* temperature sensor type */ + enum chips type; }; -static int lm95234_read_temp(struct i2c_client *client, int index, int *t) +static int lm95234_read_temp(struct regmap *regmap, int index, long *t) { - int val; - u16 temp = 0; + unsigned int regs[2]; + int temp = 0, ret; + u8 regvals[2]; if (index) { - val = i2c_smbus_read_byte_data(client, - LM95234_REG_UTEMPH(index - 1)); - if (val < 0) - return val; - temp = val << 8; - val = i2c_smbus_read_byte_data(client, - LM95234_REG_UTEMPL(index - 1)); - if (val < 0) - return val; - temp |= val; - *t = temp; + regs[0] = LM95234_REG_UTEMPH(index - 1); + regs[1] = LM95234_REG_UTEMPL(index - 1); + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); + if (ret) + return ret; + temp = (regvals[0] << 8) | regvals[1]; } /* * Read signed temperature if unsigned temperature is 0, * or if this is the local sensor. */ if (!temp) { - val = i2c_smbus_read_byte_data(client, - LM95234_REG_TEMPH(index)); - if (val < 0) - return val; - temp = val << 8; - val = i2c_smbus_read_byte_data(client, - LM95234_REG_TEMPL(index)); - if (val < 0) - return val; - temp |= val; - *t = (s16)temp; + regs[0] = LM95234_REG_TEMPH(index); + regs[1] = LM95234_REG_TEMPL(index); + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); + if (ret) + return ret; + temp = (regvals[0] << 8) | regvals[1]; + temp = sign_extend32(temp, 15); } + *t = DIV_ROUND_CLOSEST(temp * 125, 32); return 0; } -static u16 update_intervals[] = { 143, 364, 1000, 2500 }; - -/* Fill value cache. Must be called with update lock held. */ - -static int lm95234_fill_cache(struct lm95234_data *data, - struct i2c_client *client) +static int lm95234_hyst_get(struct regmap *regmap, int reg, long *val) { - int i, ret; - - ret = i2c_smbus_read_byte_data(client, LM95234_REG_CONVRATE); - if (ret < 0) - return ret; - - data->interval = msecs_to_jiffies(update_intervals[ret & 0x03]); - - for (i = 0; i < ARRAY_SIZE(data->tcrit1); i++) { - ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT1(i)); - if (ret < 0) - return ret; - data->tcrit1[i] = ret; - } - for (i = 0; i < ARRAY_SIZE(data->tcrit2); i++) { - ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT2(i)); - if (ret < 0) - return ret; - data->tcrit2[i] = ret; - } - for (i = 0; i < ARRAY_SIZE(data->toffset); i++) { - ret = i2c_smbus_read_byte_data(client, LM95234_REG_OFFSET(i)); - if (ret < 0) - return ret; - data->toffset[i] = ret; - } - - ret = i2c_smbus_read_byte_data(client, LM95234_REG_TCRIT_HYST); - if (ret < 0) - return ret; - data->thyst = ret; + unsigned int regs[2] = {reg, LM95234_REG_TCRIT_HYST}; + u8 regvals[2]; + int ret; - ret = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL); - if (ret < 0) + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); + if (ret) return ret; - data->sensor_type = ret; - + *val = (regvals[0] - regvals[1]) * 1000; return 0; } -static int lm95234_update_device(struct lm95234_data *data) +static ssize_t lm95234_hyst_set(struct lm95234_data *data, long val) { - struct i2c_client *client = data->client; + u32 tcrit; int ret; mutex_lock(&data->update_lock); - if (time_after(jiffies, data->last_updated + data->interval) || - !data->valid) { - int i; - - if (!data->valid) { - ret = lm95234_fill_cache(data, client); - if (ret < 0) - goto abort; - } - - data->valid = false; - for (i = 0; i < ARRAY_SIZE(data->temp); i++) { - ret = lm95234_read_temp(client, i, &data->temp[i]); - if (ret < 0) - goto abort; - } - - ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_FAULT); - if (ret < 0) - goto abort; - data->status = ret; - - ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_TCRIT1); - if (ret < 0) - goto abort; - data->status |= ret << 8; + ret = regmap_read(data->regmap, LM95234_REG_TCRIT1(0), &tcrit); + if (ret) + goto unlock; - ret = i2c_smbus_read_byte_data(client, LM95234_REG_STS_TCRIT2); - if (ret < 0) - goto abort; - data->status |= ret << 16; + val = DIV_ROUND_CLOSEST(clamp_val(val, -255000, 255000), 1000); + val = clamp_val((int)tcrit - val, 0, 31); - data->last_updated = jiffies; - data->valid = true; - } - ret = 0; -abort: + ret = regmap_write(data->regmap, LM95234_REG_TCRIT_HYST, val); +unlock: mutex_unlock(&data->update_lock); - return ret; } -static ssize_t temp_show(struct device *dev, struct device_attribute *attr, - char *buf) +static int lm95234_crit_reg(int channel) { - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - return sprintf(buf, "%d\n", - DIV_ROUND_CLOSEST(data->temp[index] * 125, 32)); -} - -static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct lm95234_data *data = dev_get_drvdata(dev); - u32 mask = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - return sprintf(buf, "%u", !!(data->status & mask)); -} - -static ssize_t type_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct lm95234_data *data = dev_get_drvdata(dev); - u8 mask = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - return sprintf(buf, data->sensor_type & mask ? "1\n" : "2\n"); + if (channel == 1 || channel == 2) + return LM95234_REG_TCRIT2(channel - 1); + return LM95234_REG_TCRIT1(channel); } -static ssize_t type_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static int lm95234_temp_write(struct device *dev, u32 attr, int channel, long val) { struct lm95234_data *data = dev_get_drvdata(dev); - unsigned long val; - u8 mask = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - ret = kstrtoul(buf, 10, &val); - if (ret < 0) - return ret; - - if (val != 1 && val != 2) - return -EINVAL; - - mutex_lock(&data->update_lock); - if (val == 1) - data->sensor_type |= mask; - else - data->sensor_type &= ~mask; - data->valid = false; - i2c_smbus_write_byte_data(data->client, LM95234_REG_REM_MODEL, - data->sensor_type); - mutex_unlock(&data->update_lock); - - return count; + struct regmap *regmap = data->regmap; + + switch (attr) { + case hwmon_temp_enable: + if (val && val != 1) + return -EINVAL; + return regmap_update_bits(regmap, LM95234_REG_ENABLE, + BIT(channel), val ? BIT(channel) : 0); + case hwmon_temp_type: + if (val != 1 && val != 2) + return -EINVAL; + return regmap_update_bits(regmap, LM95234_REG_REM_MODEL, + BIT(channel), + val == 1 ? BIT(channel) : 0); + case hwmon_temp_offset: + val = DIV_ROUND_CLOSEST(clamp_val(val, -64000, 63500), 500); + return regmap_write(regmap, LM95234_REG_OFFSET(channel - 1), val); + case hwmon_temp_max: + val = clamp_val(val, 0, channel == 1 ? 127000 : 255000); + val = DIV_ROUND_CLOSEST(val, 1000); + return regmap_write(regmap, lm95234_crit_reg(channel), val); + case hwmon_temp_max_hyst: + return lm95234_hyst_set(data, val); + case hwmon_temp_crit: + val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 255000), 1000); + return regmap_write(regmap, LM95234_REG_TCRIT1(channel), val); + default: + return -EOPNOTSUPP; + } + return 0; } -static ssize_t tcrit2_show(struct device *dev, struct device_attribute *attr, - char *buf) +static int lm95234_alarm_reg(int channel) { - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - return sprintf(buf, "%u", data->tcrit2[index] * 1000); + if (channel == 1 || channel == 2) + return LM95234_REG_STS_TCRIT2; + return LM95234_REG_STS_TCRIT1; } -static ssize_t tcrit2_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static int lm95234_temp_read(struct device *dev, u32 attr, int channel, long *val) { struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - long val; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - ret = kstrtol(buf, 10, &val); - if (ret < 0) - return ret; - - val = DIV_ROUND_CLOSEST(clamp_val(val, 0, (index ? 255 : 127) * 1000), - 1000); - - mutex_lock(&data->update_lock); - data->tcrit2[index] = val; - i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT2(index), val); - mutex_unlock(&data->update_lock); + struct regmap *regmap = data->regmap; + u32 regval, mask; + int ret; - return count; + switch (attr) { + case hwmon_temp_enable: + ret = regmap_read(regmap, LM95234_REG_ENABLE, ®val); + if (ret) + return ret; + *val = !!(regval & BIT(channel)); + break; + case hwmon_temp_input: + return lm95234_read_temp(regmap, channel, val); + case hwmon_temp_max_alarm: + ret = regmap_read(regmap, lm95234_alarm_reg(channel), ®val); + if (ret) + return ret; + *val = !!(regval & BIT(channel)); + break; + case hwmon_temp_crit_alarm: + ret = regmap_read(regmap, LM95234_REG_STS_TCRIT1, ®val); + if (ret) + return ret; + *val = !!(regval & BIT(channel)); + break; + case hwmon_temp_crit_hyst: + return lm95234_hyst_get(regmap, LM95234_REG_TCRIT1(channel), val); + case hwmon_temp_type: + ret = regmap_read(regmap, LM95234_REG_REM_MODEL, ®val); + if (ret) + return ret; + *val = (regval & BIT(channel)) ? 1 : 2; + break; + case hwmon_temp_offset: + ret = regmap_read(regmap, LM95234_REG_OFFSET(channel - 1), ®val); + if (ret) + return ret; + *val = sign_extend32(regval, 7) * 500; + break; + case hwmon_temp_fault: + ret = regmap_read(regmap, LM95234_REG_STS_FAULT, ®val); + if (ret) + return ret; + mask = (BIT(0) | BIT(1)) << ((channel - 1) << 1); + *val = !!(regval & mask); + break; + case hwmon_temp_max: + ret = regmap_read(regmap, lm95234_crit_reg(channel), ®val); + if (ret) + return ret; + *val = regval * 1000; + break; + case hwmon_temp_max_hyst: + return lm95234_hyst_get(regmap, lm95234_crit_reg(channel), val); + case hwmon_temp_crit: + ret = regmap_read(regmap, LM95234_REG_TCRIT1(channel), ®val); + if (ret) + return ret; + *val = regval * 1000; + break; + default: + return -EOPNOTSUPP; + } + return 0; } -static ssize_t tcrit2_hyst_show(struct device *dev, - struct device_attribute *attr, char *buf) -{ - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - /* Result can be negative, so be careful with unsigned operands */ - return sprintf(buf, "%d", - ((int)data->tcrit2[index] - (int)data->thyst) * 1000); -} +static u16 update_intervals[] = { 143, 364, 1000, 2500 }; -static ssize_t tcrit1_show(struct device *dev, struct device_attribute *attr, - char *buf) +static int lm95234_chip_write(struct device *dev, u32 attr, long val) { struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - return sprintf(buf, "%u", data->tcrit1[index] * 1000); + switch (attr) { + case hwmon_chip_update_interval: + val = find_closest(val, update_intervals, ARRAY_SIZE(update_intervals)); + return regmap_write(data->regmap, LM95234_REG_CONVRATE, val); + default: + return -EOPNOTSUPP; + } + return 0; } -static ssize_t tcrit1_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static int lm95234_chip_read(struct device *dev, u32 attr, long *val) { struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - long val; - - if (ret) - return ret; - - ret = kstrtol(buf, 10, &val); - if (ret < 0) - return ret; - - val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 255000), 1000); + u32 convrate; + int ret; - mutex_lock(&data->update_lock); - data->tcrit1[index] = val; - i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT1(index), val); - mutex_unlock(&data->update_lock); + switch (attr) { + case hwmon_chip_update_interval: + ret = regmap_read(data->regmap, LM95234_REG_CONVRATE, &convrate); + if (ret) + return ret; - return count; + *val = update_intervals[convrate & 0x03]; + break; + default: + return -EOPNOTSUPP; + } + return 0; } -static ssize_t tcrit1_hyst_show(struct device *dev, - struct device_attribute *attr, char *buf) +static int lm95234_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - /* Result can be negative, so be careful with unsigned operands */ - return sprintf(buf, "%d", - ((int)data->tcrit1[index] - (int)data->thyst) * 1000); + switch (type) { + case hwmon_chip: + return lm95234_chip_write(dev, attr, val); + case hwmon_temp: + return lm95234_temp_write(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t tcrit1_hyst_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static int lm95234_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) { - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - long val; - - if (ret) - return ret; - - ret = kstrtol(buf, 10, &val); - if (ret < 0) - return ret; - - val = DIV_ROUND_CLOSEST(clamp_val(val, -255000, 255000), 1000); - val = clamp_val((int)data->tcrit1[index] - val, 0, 31); - - mutex_lock(&data->update_lock); - data->thyst = val; - i2c_smbus_write_byte_data(data->client, LM95234_REG_TCRIT_HYST, val); - mutex_unlock(&data->update_lock); - - return count; + switch (type) { + case hwmon_chip: + return lm95234_chip_read(dev, attr, val); + case hwmon_temp: + return lm95234_temp_read(dev, attr, channel, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t offset_show(struct device *dev, struct device_attribute *attr, - char *buf) +static umode_t lm95234_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) { - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); + const struct lm95234_data *data = _data; - if (ret) - return ret; + if (data->type == lm95233 && channel > 2) + return 0; - return sprintf(buf, "%d", data->toffset[index] * 500); + switch (type) { + case hwmon_chip: + switch (attr) { + case hwmon_chip_update_interval: + return 0644; + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_max_alarm: + return 0444; + case hwmon_temp_crit_alarm: + case hwmon_temp_crit_hyst: + return (channel && channel < 3) ? 0444 : 0; + case hwmon_temp_type: + case hwmon_temp_offset: + return channel ? 0644 : 0; + case hwmon_temp_fault: + return channel ? 0444 : 0; + case hwmon_temp_max: + case hwmon_temp_enable: + return 0644; + case hwmon_temp_max_hyst: + return channel ? 0444 : 0644; + case hwmon_temp_crit: + return (channel && channel < 3) ? 0644 : 0; + default: + break; + } + break; + default: + break; + } + return 0; } -static ssize_t offset_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct lm95234_data *data = dev_get_drvdata(dev); - int index = to_sensor_dev_attr(attr)->index; - int ret = lm95234_update_device(data); - long val; - - if (ret) - return ret; - - ret = kstrtol(buf, 10, &val); - if (ret < 0) - return ret; - - /* Accuracy is 1/2 degrees C */ - val = DIV_ROUND_CLOSEST(clamp_val(val, -64000, 63500), 500); +static const struct hwmon_channel_info * const lm95234_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_MAX_ALARM | HWMON_T_ENABLE, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | + HWMON_T_CRIT_ALARM | HWMON_T_OFFSET | HWMON_T_ENABLE, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | + HWMON_T_CRIT_ALARM | HWMON_T_OFFSET | HWMON_T_ENABLE, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | + HWMON_T_OFFSET | HWMON_T_ENABLE, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | + HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | + HWMON_T_OFFSET | HWMON_T_ENABLE), + NULL +}; - mutex_lock(&data->update_lock); - data->toffset[index] = val; - i2c_smbus_write_byte_data(data->client, LM95234_REG_OFFSET(index), val); - mutex_unlock(&data->update_lock); +static const struct hwmon_ops lm95234_hwmon_ops = { + .is_visible = lm95234_is_visible, + .read = lm95234_read, + .write = lm95234_write, +}; - return count; -} +static const struct hwmon_chip_info lm95234_chip_info = { + .ops = &lm95234_hwmon_ops, + .info = lm95234_info, +}; -static ssize_t update_interval_show(struct device *dev, - struct device_attribute *attr, char *buf) +static bool lm95234_volatile_reg(struct device *dev, unsigned int reg) { - struct lm95234_data *data = dev_get_drvdata(dev); - int ret = lm95234_update_device(data); - - if (ret) - return ret; - - return sprintf(buf, "%lu\n", - DIV_ROUND_CLOSEST(data->interval * 1000, HZ)); + switch (reg) { + case LM95234_REG_TEMPH(0) ... LM95234_REG_TEMPH(4): + case LM95234_REG_TEMPL(0) ... LM95234_REG_TEMPL(4): + case LM95234_REG_UTEMPH(0) ... LM95234_REG_UTEMPH(3): + case LM95234_REG_UTEMPL(0) ... LM95234_REG_UTEMPL(3): + case LM95234_REG_STS_FAULT: + case LM95234_REG_STS_TCRIT1: + case LM95234_REG_STS_TCRIT2: + case LM95234_REG_REM_MODEL_STS: + return true; + default: + return false; + } } -static ssize_t update_interval_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static bool lm95234_writeable_reg(struct device *dev, unsigned int reg) { - struct lm95234_data *data = dev_get_drvdata(dev); - int ret = lm95234_update_device(data); - unsigned long val; - u8 regval; - - if (ret) - return ret; - - ret = kstrtoul(buf, 10, &val); - if (ret < 0) - return ret; - - for (regval = 0; regval < 3; regval++) { - if (val <= update_intervals[regval]) - break; + switch (reg) { + case LM95234_REG_CONFIG ... LM95234_REG_FILTER: + case LM95234_REG_REM_MODEL ... LM95234_REG_OFFSET(3): + case LM95234_REG_TCRIT1(0) ... LM95234_REG_TCRIT1(4): + case LM95234_REG_TCRIT2(0) ... LM95234_REG_TCRIT2(1): + case LM95234_REG_TCRIT_HYST: + return true; + default: + return false; } - - mutex_lock(&data->update_lock); - data->interval = msecs_to_jiffies(update_intervals[regval]); - i2c_smbus_write_byte_data(data->client, LM95234_REG_CONVRATE, regval); - mutex_unlock(&data->update_lock); - - return count; } -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, 0); -static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, 1); -static SENSOR_DEVICE_ATTR_RO(temp3_input, temp, 2); -static SENSOR_DEVICE_ATTR_RO(temp4_input, temp, 3); -static SENSOR_DEVICE_ATTR_RO(temp5_input, temp, 4); - -static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, BIT(0) | BIT(1)); -static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, BIT(2) | BIT(3)); -static SENSOR_DEVICE_ATTR_RO(temp4_fault, alarm, BIT(4) | BIT(5)); -static SENSOR_DEVICE_ATTR_RO(temp5_fault, alarm, BIT(6) | BIT(7)); - -static SENSOR_DEVICE_ATTR_RW(temp2_type, type, BIT(1)); -static SENSOR_DEVICE_ATTR_RW(temp3_type, type, BIT(2)); -static SENSOR_DEVICE_ATTR_RW(temp4_type, type, BIT(3)); -static SENSOR_DEVICE_ATTR_RW(temp5_type, type, BIT(4)); - -static SENSOR_DEVICE_ATTR_RW(temp1_max, tcrit1, 0); -static SENSOR_DEVICE_ATTR_RW(temp2_max, tcrit2, 0); -static SENSOR_DEVICE_ATTR_RW(temp3_max, tcrit2, 1); -static SENSOR_DEVICE_ATTR_RW(temp4_max, tcrit1, 3); -static SENSOR_DEVICE_ATTR_RW(temp5_max, tcrit1, 4); - -static SENSOR_DEVICE_ATTR_RW(temp1_max_hyst, tcrit1_hyst, 0); -static SENSOR_DEVICE_ATTR_RO(temp2_max_hyst, tcrit2_hyst, 0); -static SENSOR_DEVICE_ATTR_RO(temp3_max_hyst, tcrit2_hyst, 1); -static SENSOR_DEVICE_ATTR_RO(temp4_max_hyst, tcrit1_hyst, 3); -static SENSOR_DEVICE_ATTR_RO(temp5_max_hyst, tcrit1_hyst, 4); - -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, BIT(0 + 8)); -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, BIT(1 + 16)); -static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, BIT(2 + 16)); -static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, alarm, BIT(3 + 8)); -static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, alarm, BIT(4 + 8)); - -static SENSOR_DEVICE_ATTR_RW(temp2_crit, tcrit1, 1); -static SENSOR_DEVICE_ATTR_RW(temp3_crit, tcrit1, 2); - -static SENSOR_DEVICE_ATTR_RO(temp2_crit_hyst, tcrit1_hyst, 1); -static SENSOR_DEVICE_ATTR_RO(temp3_crit_hyst, tcrit1_hyst, 2); - -static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, BIT(1 + 8)); -static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, BIT(2 + 8)); - -static SENSOR_DEVICE_ATTR_RW(temp2_offset, offset, 0); -static SENSOR_DEVICE_ATTR_RW(temp3_offset, offset, 1); -static SENSOR_DEVICE_ATTR_RW(temp4_offset, offset, 2); -static SENSOR_DEVICE_ATTR_RW(temp5_offset, offset, 3); - -static DEVICE_ATTR_RW(update_interval); - -static struct attribute *lm95234_common_attrs[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp3_input.dev_attr.attr, - &sensor_dev_attr_temp2_fault.dev_attr.attr, - &sensor_dev_attr_temp3_fault.dev_attr.attr, - &sensor_dev_attr_temp2_type.dev_attr.attr, - &sensor_dev_attr_temp3_type.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp2_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp3_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_crit.dev_attr.attr, - &sensor_dev_attr_temp3_crit.dev_attr.attr, - &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, - &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, - &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_offset.dev_attr.attr, - &sensor_dev_attr_temp3_offset.dev_attr.attr, - &dev_attr_update_interval.attr, - NULL -}; - -static const struct attribute_group lm95234_common_group = { - .attrs = lm95234_common_attrs, -}; - -static struct attribute *lm95234_attrs[] = { - &sensor_dev_attr_temp4_input.dev_attr.attr, - &sensor_dev_attr_temp5_input.dev_attr.attr, - &sensor_dev_attr_temp4_fault.dev_attr.attr, - &sensor_dev_attr_temp5_fault.dev_attr.attr, - &sensor_dev_attr_temp4_type.dev_attr.attr, - &sensor_dev_attr_temp5_type.dev_attr.attr, - &sensor_dev_attr_temp4_max.dev_attr.attr, - &sensor_dev_attr_temp5_max.dev_attr.attr, - &sensor_dev_attr_temp4_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp5_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp4_offset.dev_attr.attr, - &sensor_dev_attr_temp5_offset.dev_attr.attr, - NULL -}; - -static const struct attribute_group lm95234_group = { - .attrs = lm95234_attrs, +static const struct regmap_config lm95234_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .writeable_reg = lm95234_writeable_reg, + .volatile_reg = lm95234_volatile_reg, + .cache_type = REGCACHE_MAPLE, }; static int lm95234_detect(struct i2c_client *client, @@ -649,61 +481,60 @@ static int lm95234_detect(struct i2c_client *client, return 0; } -static int lm95234_init_client(struct i2c_client *client) +static int lm95234_init_client(struct device *dev, struct regmap *regmap) { - int val, model; + u32 val, model; + int ret; /* start conversion if necessary */ - val = i2c_smbus_read_byte_data(client, LM95234_REG_CONFIG); - if (val < 0) - return val; - if (val & 0x40) - i2c_smbus_write_byte_data(client, LM95234_REG_CONFIG, - val & ~0x40); + ret = regmap_clear_bits(regmap, LM95234_REG_CONFIG, 0x40); + if (ret) + return ret; /* If diode type status reports an error, try to fix it */ - val = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL_STS); - if (val < 0) - return val; - model = i2c_smbus_read_byte_data(client, LM95234_REG_REM_MODEL); - if (model < 0) - return model; + ret = regmap_read(regmap, LM95234_REG_REM_MODEL_STS, &val); + if (ret < 0) + return ret; + ret = regmap_read(regmap, LM95234_REG_REM_MODEL, &model); + if (ret < 0) + return ret; if (model & val) { - dev_notice(&client->dev, + dev_notice(dev, "Fixing remote diode type misconfiguration (0x%x)\n", val); - i2c_smbus_write_byte_data(client, LM95234_REG_REM_MODEL, - model & ~val); + ret = regmap_write(regmap, LM95234_REG_REM_MODEL, model & ~val); } - return 0; + return ret; } static int lm95234_probe(struct i2c_client *client) { - enum chips type = (uintptr_t)i2c_get_match_data(client); struct device *dev = &client->dev; struct lm95234_data *data; struct device *hwmon_dev; + struct regmap *regmap; int err; data = devm_kzalloc(dev, sizeof(struct lm95234_data), GFP_KERNEL); if (!data) return -ENOMEM; - data->client = client; + data->type = (uintptr_t)i2c_get_match_data(client); + + regmap = devm_regmap_init_i2c(client, &lm95234_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + data->regmap = regmap; mutex_init(&data->update_lock); /* Initialize the LM95234 chip */ - err = lm95234_init_client(client); + err = lm95234_init_client(dev, regmap); if (err < 0) return err; - data->groups[0] = &lm95234_common_group; - if (type == lm95234) - data->groups[1] = &lm95234_group; - - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - data, data->groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + data, &lm95234_chip_info, NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } diff --git a/drivers/hwmon/lm95245.c b/drivers/hwmon/lm95245.c index d293b4f..3bdc305 100644 --- a/drivers/hwmon/lm95245.c +++ b/drivers/hwmon/lm95245.c @@ -161,18 +161,18 @@ static int lm95245_read_temp(struct device *dev, u32 attr, int channel, { struct lm95245_data *data = dev_get_drvdata(dev); struct regmap *regmap = data->regmap; - int ret, regl, regh, regvall, regvalh; + unsigned int regs[2]; + unsigned int regval; + u8 regvals[2]; + int ret; switch (attr) { case hwmon_temp_input: - regl = channel ? LM95245_REG_R_REMOTE_TEMPL_S : - LM95245_REG_R_LOCAL_TEMPL_S; - regh = channel ? LM95245_REG_R_REMOTE_TEMPH_S : - LM95245_REG_R_LOCAL_TEMPH_S; - ret = regmap_read(regmap, regl, ®vall); - if (ret < 0) - return ret; - ret = regmap_read(regmap, regh, ®valh); + regs[0] = channel ? LM95245_REG_R_REMOTE_TEMPL_S : + LM95245_REG_R_LOCAL_TEMPL_S; + regs[1] = channel ? LM95245_REG_R_REMOTE_TEMPH_S : + LM95245_REG_R_LOCAL_TEMPH_S; + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); if (ret < 0) return ret; /* @@ -181,92 +181,77 @@ static int lm95245_read_temp(struct device *dev, u32 attr, int channel, * Use signed calculation for remote if signed bit is set * or if reported temperature is below signed limit. */ - if (!channel || (regvalh & 0x80) || regvalh < 0x7f) { - *val = temp_from_reg_signed(regvalh, regvall); + if (!channel || (regvals[1] & 0x80) || regvals[1] < 0x7f) { + *val = temp_from_reg_signed(regvals[1], regvals[0]); return 0; } - ret = regmap_read(regmap, LM95245_REG_R_REMOTE_TEMPL_U, - ®vall); - if (ret < 0) - return ret; - ret = regmap_read(regmap, LM95245_REG_R_REMOTE_TEMPH_U, - ®valh); - if (ret < 0) + ret = regmap_bulk_read(regmap, LM95245_REG_R_REMOTE_TEMPH_U, regvals, 2); + if (ret) return ret; - *val = temp_from_reg_unsigned(regvalh, regvall); + *val = temp_from_reg_unsigned(regvals[0], regvals[1]); return 0; case hwmon_temp_max: ret = regmap_read(regmap, LM95245_REG_RW_REMOTE_OS_LIMIT, - ®valh); + ®val); if (ret < 0) return ret; - *val = regvalh * 1000; + *val = regval * 1000; return 0; case hwmon_temp_crit: - regh = channel ? LM95245_REG_RW_REMOTE_TCRIT_LIMIT : - LM95245_REG_RW_LOCAL_OS_TCRIT_LIMIT; - ret = regmap_read(regmap, regh, ®valh); + regs[0] = channel ? LM95245_REG_RW_REMOTE_TCRIT_LIMIT : + LM95245_REG_RW_LOCAL_OS_TCRIT_LIMIT; + ret = regmap_read(regmap, regs[0], ®val); if (ret < 0) return ret; - *val = regvalh * 1000; + *val = regval * 1000; return 0; case hwmon_temp_max_hyst: - ret = regmap_read(regmap, LM95245_REG_RW_REMOTE_OS_LIMIT, - ®valh); + regs[0] = LM95245_REG_RW_REMOTE_OS_LIMIT; + regs[1] = LM95245_REG_RW_COMMON_HYSTERESIS; + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); if (ret < 0) return ret; - ret = regmap_read(regmap, LM95245_REG_RW_COMMON_HYSTERESIS, - ®vall); - if (ret < 0) - return ret; - *val = (regvalh - regvall) * 1000; + *val = (regvals[0] - regvals[1]) * 1000; return 0; case hwmon_temp_crit_hyst: - regh = channel ? LM95245_REG_RW_REMOTE_TCRIT_LIMIT : - LM95245_REG_RW_LOCAL_OS_TCRIT_LIMIT; - ret = regmap_read(regmap, regh, ®valh); - if (ret < 0) - return ret; - ret = regmap_read(regmap, LM95245_REG_RW_COMMON_HYSTERESIS, - ®vall); + regs[0] = channel ? LM95245_REG_RW_REMOTE_TCRIT_LIMIT : + LM95245_REG_RW_LOCAL_OS_TCRIT_LIMIT; + regs[1] = LM95245_REG_RW_COMMON_HYSTERESIS; + + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); if (ret < 0) return ret; - *val = (regvalh - regvall) * 1000; + *val = (regvals[0] - regvals[1]) * 1000; return 0; case hwmon_temp_type: - ret = regmap_read(regmap, LM95245_REG_RW_CONFIG2, ®valh); + ret = regmap_read(regmap, LM95245_REG_RW_CONFIG2, ®val); if (ret < 0) return ret; - *val = (regvalh & CFG2_REMOTE_TT) ? 1 : 2; + *val = (regval & CFG2_REMOTE_TT) ? 1 : 2; return 0; case hwmon_temp_offset: - ret = regmap_read(regmap, LM95245_REG_RW_REMOTE_OFFL, - ®vall); - if (ret < 0) - return ret; - ret = regmap_read(regmap, LM95245_REG_RW_REMOTE_OFFH, - ®valh); + ret = regmap_bulk_read(regmap, LM95245_REG_RW_REMOTE_OFFH, regvals, 2); if (ret < 0) return ret; - *val = temp_from_reg_signed(regvalh, regvall); + *val = temp_from_reg_signed(regvals[0], regvals[1]); return 0; case hwmon_temp_max_alarm: - ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®valh); + ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®val); if (ret < 0) return ret; - *val = !!(regvalh & STATUS1_ROS); + *val = !!(regval & STATUS1_ROS); return 0; case hwmon_temp_crit_alarm: - ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®valh); + ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®val); if (ret < 0) return ret; - *val = !!(regvalh & (channel ? STATUS1_RTCRIT : STATUS1_LOC)); + *val = !!(regval & (channel ? STATUS1_RTCRIT : STATUS1_LOC)); return 0; case hwmon_temp_fault: - ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®valh); + ret = regmap_read(regmap, LM95245_REG_R_STATUS1, ®val); if (ret < 0) return ret; - *val = !!(regvalh & STATUS1_DIODE_FAULT); + *val = !!(regval & STATUS1_DIODE_FAULT); return 0; default: return -EOPNOTSUPP; @@ -279,6 +264,7 @@ static int lm95245_write_temp(struct device *dev, u32 attr, int channel, struct lm95245_data *data = dev_get_drvdata(dev); struct regmap *regmap = data->regmap; unsigned int regval; + u8 regvals[2]; int ret, reg; switch (attr) { @@ -311,16 +297,10 @@ static int lm95245_write_temp(struct device *dev, u32 attr, int channel, case hwmon_temp_offset: val = clamp_val(val, -128000, 127875); val = val * 256 / 1000; - mutex_lock(&data->update_lock); - ret = regmap_write(regmap, LM95245_REG_RW_REMOTE_OFFL, - val & 0xe0); - if (ret < 0) { - mutex_unlock(&data->update_lock); - return ret; - } - ret = regmap_write(regmap, LM95245_REG_RW_REMOTE_OFFH, - (val >> 8) & 0xff); - mutex_unlock(&data->update_lock); + regvals[0] = val >> 8; + regvals[1] = val & 0xe0; + + ret = regmap_bulk_write(regmap, LM95245_REG_RW_REMOTE_OFFH, regvals, 2); return ret; case hwmon_temp_type: if (val != 1 && val != 2) diff --git a/drivers/hwmon/ltc2947-core.c b/drivers/hwmon/ltc2947-core.c index d2ff6e7..2448391 100644 --- a/drivers/hwmon/ltc2947-core.c +++ b/drivers/hwmon/ltc2947-core.c @@ -11,7 +11,8 @@ #include #include #include -#include +#include +#include #include #include "ltc2947.h" @@ -1034,9 +1035,8 @@ static int ltc2947_setup(struct ltc2947_data *st) /* 19.89E-6 * 10E9 */ st->lsb_energy = 19890; } - ret = of_property_read_u32_array(st->dev->of_node, - "adi,accumulator-ctl-pol", accum, - ARRAY_SIZE(accum)); + ret = device_property_read_u32_array(st->dev, "adi,accumulator-ctl-pol", + accum, ARRAY_SIZE(accum)); if (!ret) { u32 accum_reg = LTC2947_ACCUM_POL_1(accum[0]) | LTC2947_ACCUM_POL_2(accum[1]); @@ -1045,9 +1045,9 @@ static int ltc2947_setup(struct ltc2947_data *st) if (ret) return ret; } - ret = of_property_read_u32(st->dev->of_node, - "adi,accumulation-deadband-microamp", - &deadband); + ret = device_property_read_u32(st->dev, + "adi,accumulation-deadband-microamp", + &deadband); if (!ret) { /* the LSB is the same as the current, so 3mA */ ret = regmap_write(st->map, LTC2947_REG_ACCUM_DEADBAND, @@ -1056,7 +1056,7 @@ static int ltc2947_setup(struct ltc2947_data *st) return ret; } /* check gpio cfg */ - ret = of_property_read_u32(st->dev->of_node, "adi,gpio-out-pol", &pol); + ret = device_property_read_u32(st->dev, "adi,gpio-out-pol", &pol); if (!ret) { /* setup GPIO as output */ u32 gpio_ctl = LTC2947_GPIO_EN(1) | LTC2947_GPIO_FAN_EN(1) | @@ -1067,8 +1067,8 @@ static int ltc2947_setup(struct ltc2947_data *st) if (ret) return ret; } - ret = of_property_read_u32_array(st->dev->of_node, "adi,gpio-in-accum", - accum, ARRAY_SIZE(accum)); + ret = device_property_read_u32_array(st->dev, "adi,gpio-in-accum", + accum, ARRAY_SIZE(accum)); if (!ret) { /* * Setup the accum options. The gpioctl is already defined as diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c index d4a9322..541fa09 100644 --- a/drivers/hwmon/ltc2992.c +++ b/drivers/hwmon/ltc2992.c @@ -854,33 +854,24 @@ static const struct regmap_config ltc2992_regmap_config = { static int ltc2992_parse_dt(struct ltc2992_state *st) { - struct fwnode_handle *fwnode; - struct fwnode_handle *child; u32 addr; u32 val; int ret; - fwnode = dev_fwnode(&st->client->dev); - - fwnode_for_each_available_child_node(fwnode, child) { + device_for_each_child_node_scoped(&st->client->dev, child) { ret = fwnode_property_read_u32(child, "reg", &addr); - if (ret < 0) { - fwnode_handle_put(child); + if (ret < 0) return ret; - } - if (addr > 1) { - fwnode_handle_put(child); + if (addr > 1) return -EINVAL; - } ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val); if (!ret) { - if (!val) { - fwnode_handle_put(child); + if (!val) return dev_err_probe(&st->client->dev, -EINVAL, "shunt resistor value cannot be zero\n"); - } + st->r_sense_uohm[addr] = val; } } diff --git a/drivers/hwmon/max16065.c b/drivers/hwmon/max16065.c index 7ce9a89..0ccb5eb 100644 --- a/drivers/hwmon/max16065.c +++ b/drivers/hwmon/max16065.c @@ -79,7 +79,7 @@ static const bool max16065_have_current[] = { }; struct max16065_data { - enum chips type; + enum chips chip; struct i2c_client *client; const struct attribute_group *groups[4]; struct mutex update_lock; @@ -114,9 +114,10 @@ static inline int LIMIT_TO_MV(int limit, int range) return limit * range / 256; } -static inline int MV_TO_LIMIT(int mv, int range) +static inline int MV_TO_LIMIT(unsigned long mv, int range) { - return clamp_val(DIV_ROUND_CLOSEST(mv * 256, range), 0, 255); + mv = clamp_val(mv, 0, ULONG_MAX / 256); + return DIV_ROUND_CLOSEST(clamp_val(mv * 256, 0, range * 255), range); } static inline int ADC_TO_CURR(int adc, int gain) @@ -161,10 +162,17 @@ static struct max16065_data *max16065_update_device(struct device *dev) MAX16065_CURR_SENSE); } - for (i = 0; i < DIV_ROUND_UP(data->num_adc, 8); i++) + for (i = 0; i < 2; i++) data->fault[i] = i2c_smbus_read_byte_data(client, MAX16065_FAULT(i)); + /* + * MAX16067 and MAX16068 have separate undervoltage and + * overvoltage alarm bits. Squash them together. + */ + if (data->chip == max16067 || data->chip == max16068) + data->fault[0] |= data->fault[1]; + data->last_updated = jiffies; data->valid = true; } @@ -513,6 +521,7 @@ static int max16065_probe(struct i2c_client *client) if (unlikely(!data)) return -ENOMEM; + data->chip = chip; data->client = client; mutex_init(&data->update_lock); diff --git a/drivers/hwmon/max1619.c b/drivers/hwmon/max1619.c index a89a519..9b6d03c 100644 --- a/drivers/hwmon/max1619.c +++ b/drivers/hwmon/max1619.c @@ -12,275 +12,356 @@ * http://pdfserv.maxim-ic.com/en/ds/MAX1619.pdf */ -#include -#include -#include -#include -#include -#include -#include #include -#include -#include +#include +#include +#include +#include +#include +#include static const unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END }; -/* - * The MAX1619 registers - */ +#define MAX1619_REG_LOCAL_TEMP 0x00 +#define MAX1619_REG_REMOTE_TEMP 0x01 +#define MAX1619_REG_STATUS 0x02 +#define MAX1619_REG_CONFIG 0x03 +#define MAX1619_REG_CONVRATE 0x04 +#define MAX1619_REG_REMOTE_HIGH 0x07 +#define MAX1619_REG_REMOTE_LOW 0x08 +#define MAX1619_REG_REMOTE_CRIT 0x10 +#define MAX1619_REG_REMOTE_CRIT_HYST 0x11 +#define MAX1619_REG_MAN_ID 0xFE +#define MAX1619_REG_CHIP_ID 0xFF + +static int get_alarms(struct regmap *regmap) +{ + static u32 regs[2] = { MAX1619_REG_STATUS, MAX1619_REG_CONFIG }; + u8 regdata[2]; + int ret; -#define MAX1619_REG_R_MAN_ID 0xFE -#define MAX1619_REG_R_CHIP_ID 0xFF -#define MAX1619_REG_R_CONFIG 0x03 -#define MAX1619_REG_W_CONFIG 0x09 -#define MAX1619_REG_R_CONVRATE 0x04 -#define MAX1619_REG_W_CONVRATE 0x0A -#define MAX1619_REG_R_STATUS 0x02 -#define MAX1619_REG_R_LOCAL_TEMP 0x00 -#define MAX1619_REG_R_REMOTE_TEMP 0x01 -#define MAX1619_REG_R_REMOTE_HIGH 0x07 -#define MAX1619_REG_W_REMOTE_HIGH 0x0D -#define MAX1619_REG_R_REMOTE_LOW 0x08 -#define MAX1619_REG_W_REMOTE_LOW 0x0E -#define MAX1619_REG_R_REMOTE_CRIT 0x10 -#define MAX1619_REG_W_REMOTE_CRIT 0x12 -#define MAX1619_REG_R_TCRIT_HYST 0x11 -#define MAX1619_REG_W_TCRIT_HYST 0x13 + ret = regmap_multi_reg_read(regmap, regs, regdata, 2); + if (ret) + return ret; -/* - * Conversions - */ + /* OVERT status bit may be reversed */ + if (!(regdata[1] & 0x20)) + regdata[0] ^= 0x02; -static int temp_from_reg(int val) -{ - return (val & 0x80 ? val-0x100 : val) * 1000; + return regdata[0] & 0x1e; } -static int temp_to_reg(int val) +static int max1619_temp_read(struct regmap *regmap, u32 attr, int channel, long *val) { - return (val < 0 ? val+0x100*1000 : val) / 1000; + int reg = -1, alarm_bit = 0; + u32 temp; + int ret; + + switch (attr) { + case hwmon_temp_input: + reg = channel ? MAX1619_REG_REMOTE_TEMP : MAX1619_REG_LOCAL_TEMP; + break; + case hwmon_temp_min: + reg = MAX1619_REG_REMOTE_LOW; + break; + case hwmon_temp_max: + reg = MAX1619_REG_REMOTE_HIGH; + break; + case hwmon_temp_crit: + reg = MAX1619_REG_REMOTE_CRIT; + break; + case hwmon_temp_crit_hyst: + reg = MAX1619_REG_REMOTE_CRIT_HYST; + break; + case hwmon_temp_min_alarm: + alarm_bit = 3; + break; + case hwmon_temp_max_alarm: + alarm_bit = 4; + break; + case hwmon_temp_crit_alarm: + alarm_bit = 1; + break; + case hwmon_temp_fault: + alarm_bit = 2; + break; + default: + return -EOPNOTSUPP; + } + if (reg >= 0) { + ret = regmap_read(regmap, reg, &temp); + if (ret < 0) + return ret; + *val = sign_extend32(temp, 7) * 1000; + } else { + ret = get_alarms(regmap); + if (ret < 0) + return ret; + *val = !!(ret & BIT(alarm_bit)); + } + return 0; } -enum temp_index { - t_input1 = 0, - t_input2, - t_low2, - t_high2, - t_crit2, - t_hyst2, - t_num_regs -}; - -/* - * Client data (each client gets its own) - */ - -struct max1619_data { - struct i2c_client *client; - struct mutex update_lock; - bool valid; /* false until following fields are valid */ - unsigned long last_updated; /* in jiffies */ - - /* registers values */ - u8 temp[t_num_regs]; /* index with enum temp_index */ - u8 alarms; -}; +static u16 update_intervals[] = { 16000, 8000, 4000, 2000, 1000, 500, 250, 125 }; -static const u8 regs_read[t_num_regs] = { - [t_input1] = MAX1619_REG_R_LOCAL_TEMP, - [t_input2] = MAX1619_REG_R_REMOTE_TEMP, - [t_low2] = MAX1619_REG_R_REMOTE_LOW, - [t_high2] = MAX1619_REG_R_REMOTE_HIGH, - [t_crit2] = MAX1619_REG_R_REMOTE_CRIT, - [t_hyst2] = MAX1619_REG_R_TCRIT_HYST, -}; - -static const u8 regs_write[t_num_regs] = { - [t_low2] = MAX1619_REG_W_REMOTE_LOW, - [t_high2] = MAX1619_REG_W_REMOTE_HIGH, - [t_crit2] = MAX1619_REG_W_REMOTE_CRIT, - [t_hyst2] = MAX1619_REG_W_TCRIT_HYST, -}; - -static struct max1619_data *max1619_update_device(struct device *dev) +static int max1619_chip_read(struct regmap *regmap, u32 attr, long *val) { - struct max1619_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - int config, i; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ * 2) || !data->valid) { - dev_dbg(&client->dev, "Updating max1619 data.\n"); - for (i = 0; i < t_num_regs; i++) - data->temp[i] = i2c_smbus_read_byte_data(client, - regs_read[i]); - data->alarms = i2c_smbus_read_byte_data(client, - MAX1619_REG_R_STATUS); - /* If OVERT polarity is low, reverse alarm bit */ - config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG); - if (!(config & 0x20)) - data->alarms ^= 0x02; - - data->last_updated = jiffies; - data->valid = true; + int alarms, ret; + u32 regval; + + switch (attr) { + case hwmon_chip_update_interval: + ret = regmap_read(regmap, MAX1619_REG_CONVRATE, ®val); + if (ret < 0) + return ret; + *val = update_intervals[regval & 7]; + break; + case hwmon_chip_alarms: + alarms = get_alarms(regmap); + if (alarms < 0) + return alarms; + *val = alarms; + break; + default: + return -EOPNOTSUPP; } - - mutex_unlock(&data->update_lock); - - return data; + return 0; } -/* - * Sysfs stuff - */ - -static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, - char *buf) +static int max1619_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct max1619_data *data = max1619_update_device(dev); + struct regmap *regmap = dev_get_drvdata(dev); + + switch (type) { + case hwmon_chip: + return max1619_chip_read(regmap, attr, val); + case hwmon_temp: + return max1619_temp_read(regmap, attr, channel, val); + default: + return -EOPNOTSUPP; + } +} - return sprintf(buf, "%d\n", temp_from_reg(data->temp[attr->index])); +static int max1619_chip_write(struct regmap *regmap, u32 attr, long val) +{ + switch (attr) { + case hwmon_chip_update_interval: + val = find_closest_descending(val, update_intervals, ARRAY_SIZE(update_intervals)); + return regmap_write(regmap, MAX1619_REG_CONVRATE, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t temp_store(struct device *dev, - struct device_attribute *devattr, const char *buf, - size_t count) +static int max1619_temp_write(struct regmap *regmap, + u32 attr, int channel, long val) { - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); - struct max1619_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - long val; - int err = kstrtol(buf, 10, &val); - if (err) - return err; - - mutex_lock(&data->update_lock); - data->temp[attr->index] = temp_to_reg(val); - i2c_smbus_write_byte_data(client, regs_write[attr->index], - data->temp[attr->index]); - mutex_unlock(&data->update_lock); - return count; + int reg; + + switch (attr) { + case hwmon_temp_min: + reg = MAX1619_REG_REMOTE_LOW; + break; + case hwmon_temp_max: + reg = MAX1619_REG_REMOTE_HIGH; + break; + case hwmon_temp_crit: + reg = MAX1619_REG_REMOTE_CRIT; + break; + case hwmon_temp_crit_hyst: + reg = MAX1619_REG_REMOTE_CRIT_HYST; + break; + default: + return -EOPNOTSUPP; + } + val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000); + return regmap_write(regmap, reg, val); } -static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, - char *buf) +static int max1619_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { - struct max1619_data *data = max1619_update_device(dev); - return sprintf(buf, "%d\n", data->alarms); + struct regmap *regmap = dev_get_drvdata(dev); + + switch (type) { + case hwmon_chip: + return max1619_chip_write(regmap, attr, val); + case hwmon_temp: + return max1619_temp_write(regmap, attr, channel, val); + default: + return -EOPNOTSUPP; + } } -static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, - char *buf) +static umode_t max1619_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) { - int bitnr = to_sensor_dev_attr(attr)->index; - struct max1619_data *data = max1619_update_device(dev); - return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1); + switch (type) { + case hwmon_chip: + switch (attr) { + case hwmon_chip_update_interval: + return 0644; + case hwmon_chip_alarms: + return 0444; + default: + break; + } + break; + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + return 0444; + case hwmon_temp_min: + case hwmon_temp_max: + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + return 0644; + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_crit_alarm: + case hwmon_temp_fault: + return 0444; + default: + break; + } + break; + default: + break; + } + return 0; } -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp, t_input1); -static SENSOR_DEVICE_ATTR_RO(temp2_input, temp, t_input2); -static SENSOR_DEVICE_ATTR_RW(temp2_min, temp, t_low2); -static SENSOR_DEVICE_ATTR_RW(temp2_max, temp, t_high2); -static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp, t_crit2); -static SENSOR_DEVICE_ATTR_RW(temp2_crit_hyst, temp, t_hyst2); - -static DEVICE_ATTR_RO(alarms); -static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 1); -static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 2); -static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, alarm, 3); -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 4); - -static struct attribute *max1619_attrs[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp2_min.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp2_crit.dev_attr.attr, - &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, - - &dev_attr_alarms.attr, - &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_fault.dev_attr.attr, - &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, +static const struct hwmon_channel_info * const max1619_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_ALARMS | HWMON_C_UPDATE_INTERVAL), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT | HWMON_T_CRIT_HYST | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_CRIT_ALARM | HWMON_T_FAULT), NULL }; -ATTRIBUTE_GROUPS(max1619); + +static const struct hwmon_ops max1619_hwmon_ops = { + .is_visible = max1619_is_visible, + .read = max1619_read, + .write = max1619_write, +}; + +static const struct hwmon_chip_info max1619_chip_info = { + .ops = &max1619_hwmon_ops, + .info = max1619_info, +}; /* Return 0 if detection is successful, -ENODEV otherwise */ static int max1619_detect(struct i2c_client *client, struct i2c_board_info *info) { struct i2c_adapter *adapter = client->adapter; - u8 reg_config, reg_convrate, reg_status, man_id, chip_id; + int regval; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; - /* detection */ - reg_config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG); - reg_convrate = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONVRATE); - reg_status = i2c_smbus_read_byte_data(client, MAX1619_REG_R_STATUS); - if ((reg_config & 0x03) != 0x00 - || reg_convrate > 0x07 || (reg_status & 0x61) != 0x00) { - dev_dbg(&adapter->dev, "MAX1619 detection failed at 0x%02x\n", - client->addr); + regval = i2c_smbus_read_byte_data(client, MAX1619_REG_CONFIG); + if (regval < 0 || (regval & 0x03)) + return -ENODEV; + regval = i2c_smbus_read_byte_data(client, MAX1619_REG_CONVRATE); + if (regval < 0 || regval > 0x07) + return -ENODEV; + regval = i2c_smbus_read_byte_data(client, MAX1619_REG_STATUS); + if (regval < 0 || (regval & 0x61)) return -ENODEV; - } - /* identification */ - man_id = i2c_smbus_read_byte_data(client, MAX1619_REG_R_MAN_ID); - chip_id = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CHIP_ID); - if (man_id != 0x4D || chip_id != 0x04) { - dev_info(&adapter->dev, - "Unsupported chip (man_id=0x%02X, chip_id=0x%02X).\n", - man_id, chip_id); + regval = i2c_smbus_read_byte_data(client, MAX1619_REG_MAN_ID); + if (regval != 0x4d) + return -ENODEV; + regval = i2c_smbus_read_byte_data(client, MAX1619_REG_CHIP_ID); + if (regval != 0x04) return -ENODEV; - } strscpy(info->type, "max1619", I2C_NAME_SIZE); return 0; } -static void max1619_init_client(struct i2c_client *client) +static int max1619_init_chip(struct regmap *regmap) { - u8 config; - - /* - * Start the conversions. - */ - i2c_smbus_write_byte_data(client, MAX1619_REG_W_CONVRATE, - 5); /* 2 Hz */ - config = i2c_smbus_read_byte_data(client, MAX1619_REG_R_CONFIG); - if (config & 0x40) - i2c_smbus_write_byte_data(client, MAX1619_REG_W_CONFIG, - config & 0xBF); /* run */ + int ret; + + ret = regmap_write(regmap, MAX1619_REG_CONVRATE, 5); /* 2 Hz */ + if (ret) + return ret; + + /* Start conversions */ + return regmap_clear_bits(regmap, MAX1619_REG_CONFIG, 0x40); } -static int max1619_probe(struct i2c_client *new_client) +/* regmap */ + +static int max1619_reg_read(void *context, unsigned int reg, unsigned int *val) { - struct max1619_data *data; - struct device *hwmon_dev; + int ret; - data = devm_kzalloc(&new_client->dev, sizeof(struct max1619_data), - GFP_KERNEL); - if (!data) - return -ENOMEM; + ret = i2c_smbus_read_byte_data(context, reg); + if (ret < 0) + return ret; + + *val = ret; + return 0; +} + +static int max1619_reg_write(void *context, unsigned int reg, unsigned int val) +{ + int offset = reg < MAX1619_REG_REMOTE_CRIT ? 6 : 2; + + return i2c_smbus_write_byte_data(context, reg + offset, val); +} + +static bool max1619_regmap_is_volatile(struct device *dev, unsigned int reg) +{ + return reg <= MAX1619_REG_STATUS; +} + +static bool max1619_regmap_is_writeable(struct device *dev, unsigned int reg) +{ + return reg > MAX1619_REG_STATUS && reg <= MAX1619_REG_REMOTE_CRIT_HYST; +} + +static const struct regmap_config max1619_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MAX1619_REG_REMOTE_CRIT_HYST, + .cache_type = REGCACHE_MAPLE, + .volatile_reg = max1619_regmap_is_volatile, + .writeable_reg = max1619_regmap_is_writeable, +}; + +static const struct regmap_bus max1619_regmap_bus = { + .reg_write = max1619_reg_write, + .reg_read = max1619_reg_read, +}; + +static int max1619_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct device *hwmon_dev; + struct regmap *regmap; + int ret; - data->client = new_client; - mutex_init(&data->update_lock); + regmap = devm_regmap_init(dev, &max1619_regmap_bus, client, + &max1619_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); - /* Initialize the MAX1619 chip */ - max1619_init_client(new_client); + ret = max1619_init_chip(regmap); + if (ret) + return ret; - hwmon_dev = devm_hwmon_device_register_with_groups(&new_client->dev, - new_client->name, - data, - max1619_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + regmap, &max1619_chip_info, NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } diff --git a/drivers/hwmon/max1668.c b/drivers/hwmon/max1668.c index 9fc583e..a8197a8 100644 --- a/drivers/hwmon/max1668.c +++ b/drivers/hwmon/max1668.c @@ -6,15 +6,15 @@ * some credit to Christoph Scheurer, but largely a rewrite */ -#include +#include +#include +#include +#include +#include #include +#include +#include #include -#include -#include -#include -#include -#include -#include /* Addresses to scan */ static const unsigned short max1668_addr_list[] = { @@ -30,14 +30,10 @@ static const unsigned short max1668_addr_list[] = { /* limits */ -/* write high limits */ -#define MAX1668_REG_LIMH_WR(nr) (0x13 + 2 * (nr)) -/* write low limits */ -#define MAX1668_REG_LIML_WR(nr) (0x14 + 2 * (nr)) -/* read high limits */ -#define MAX1668_REG_LIMH_RD(nr) (0x08 + 2 * (nr)) +/* high limits */ +#define MAX1668_REG_LIMH(nr) (0x08 + 2 * (nr)) /* read low limits */ -#define MAX1668_REG_LIML_RD(nr) (0x09 + 2 * (nr)) +#define MAX1668_REG_LIML(nr) (0x09 + 2 * (nr)) /* manufacturer and device ID Constants */ #define MAN_ID_MAXIM 0x4d @@ -50,309 +46,146 @@ static bool read_only; module_param(read_only, bool, 0); MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); -enum chips { max1668, max1805, max1989 }; - struct max1668_data { - struct i2c_client *client; - const struct attribute_group *groups[3]; - enum chips type; - - struct mutex update_lock; - bool valid; /* true if following fields are valid */ - unsigned long last_updated; /* In jiffies */ - - /* 1x local and 4x remote */ - s8 temp_max[5]; - s8 temp_min[5]; - s8 temp[5]; - u16 alarms; + struct regmap *regmap; + int channels; }; -static struct max1668_data *max1668_update_device(struct device *dev) +static int max1668_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) { struct max1668_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - struct max1668_data *ret = data; - s32 val; - int i; - - mutex_lock(&data->update_lock); - - if (data->valid && !time_after(jiffies, - data->last_updated + HZ + HZ / 2)) - goto abort; - - for (i = 0; i < 5; i++) { - val = i2c_smbus_read_byte_data(client, MAX1668_REG_TEMP(i)); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp[i] = (s8) val; - - val = i2c_smbus_read_byte_data(client, MAX1668_REG_LIMH_RD(i)); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp_max[i] = (s8) val; - - val = i2c_smbus_read_byte_data(client, MAX1668_REG_LIML_RD(i)); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp_min[i] = (s8) val; - } - - val = i2c_smbus_read_byte_data(client, MAX1668_REG_STAT1); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->alarms = val << 8; + struct regmap *regmap = data->regmap; + u32 regs[2] = { MAX1668_REG_STAT1, MAX1668_REG_TEMP(channel) }; + u8 regvals[2]; + u32 regval; + int ret; - val = i2c_smbus_read_byte_data(client, MAX1668_REG_STAT2); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; + switch (attr) { + case hwmon_temp_input: + ret = regmap_read(regmap, MAX1668_REG_TEMP(channel), ®val); + if (ret) + return ret; + *val = sign_extend32(regval, 7) * 1000; + break; + case hwmon_temp_min: + ret = regmap_read(regmap, MAX1668_REG_LIML(channel), ®val); + if (ret) + return ret; + *val = sign_extend32(regval, 7) * 1000; + break; + case hwmon_temp_max: + ret = regmap_read(regmap, MAX1668_REG_LIMH(channel), ®val); + if (ret) + return ret; + *val = sign_extend32(regval, 7) * 1000; + break; + case hwmon_temp_min_alarm: + ret = regmap_read(regmap, + channel ? MAX1668_REG_STAT2 : MAX1668_REG_STAT1, + ®val); + if (ret) + return ret; + if (channel) + *val = !!(regval & BIT(9 - channel * 2)); + else + *val = !!(regval & BIT(5)); + break; + case hwmon_temp_max_alarm: + ret = regmap_read(regmap, + channel ? MAX1668_REG_STAT2 : MAX1668_REG_STAT1, + ®val); + if (ret) + return ret; + if (channel) + *val = !!(regval & BIT(8 - channel * 2)); + else + *val = !!(regval & BIT(6)); + break; + case hwmon_temp_fault: + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); + if (ret) + return ret; + *val = !!((regvals[0] & BIT(4)) && regvals[1] == 127); + break; + default: + return -EOPNOTSUPP; } - data->alarms |= val; - - data->last_updated = jiffies; - data->valid = true; -abort: - mutex_unlock(&data->update_lock); - - return ret; -} - -static ssize_t show_temp(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int index = to_sensor_dev_attr(devattr)->index; - struct max1668_data *data = max1668_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - return sprintf(buf, "%d\n", data->temp[index] * 1000); -} - -static ssize_t show_temp_max(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int index = to_sensor_dev_attr(devattr)->index; - struct max1668_data *data = max1668_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - return sprintf(buf, "%d\n", data->temp_max[index] * 1000); -} - -static ssize_t show_temp_min(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int index = to_sensor_dev_attr(devattr)->index; - struct max1668_data *data = max1668_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - return sprintf(buf, "%d\n", data->temp_min[index] * 1000); -} - -static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct max1668_data *data = max1668_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - return sprintf(buf, "%u\n", (data->alarms >> index) & 0x1); -} - -static ssize_t show_fault(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int index = to_sensor_dev_attr(devattr)->index; - struct max1668_data *data = max1668_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - return sprintf(buf, "%u\n", - (data->alarms & (1 << 12)) && data->temp[index] == 127); + return 0; } -static ssize_t set_temp_max(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count) +static int max1668_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { - int index = to_sensor_dev_attr(devattr)->index; struct max1668_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - long temp; - int ret; + struct regmap *regmap = data->regmap; - ret = kstrtol(buf, 10, &temp); - if (ret < 0) - return ret; + val = clamp_val(val / 1000, -128, 127); - mutex_lock(&data->update_lock); - data->temp_max[index] = clamp_val(temp/1000, -128, 127); - ret = i2c_smbus_write_byte_data(client, - MAX1668_REG_LIMH_WR(index), - data->temp_max[index]); - if (ret < 0) - count = ret; - mutex_unlock(&data->update_lock); - - return count; + switch (attr) { + case hwmon_temp_min: + return regmap_write(regmap, MAX1668_REG_LIML(channel), val); + case hwmon_temp_max: + return regmap_write(regmap, MAX1668_REG_LIMH(channel), val); + default: + return -EOPNOTSUPP; + } } -static ssize_t set_temp_min(struct device *dev, - struct device_attribute *devattr, - const char *buf, size_t count) +static umode_t max1668_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) { - int index = to_sensor_dev_attr(devattr)->index; - struct max1668_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - long temp; - int ret; - - ret = kstrtol(buf, 10, &temp); - if (ret < 0) - return ret; - - mutex_lock(&data->update_lock); - data->temp_min[index] = clamp_val(temp/1000, -128, 127); - ret = i2c_smbus_write_byte_data(client, - MAX1668_REG_LIML_WR(index), - data->temp_min[index]); - if (ret < 0) - count = ret; - mutex_unlock(&data->update_lock); - - return count; + const struct max1668_data *data = _data; + + if (channel >= data->channels) + return 0; + + switch (attr) { + case hwmon_temp_min: + case hwmon_temp_max: + return read_only ? 0444 : 0644; + case hwmon_temp_input: + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + return 0444; + case hwmon_temp_fault: + if (channel) + return 0444; + break; + default: + break; + } + return 0; } -static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); -static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, - set_temp_max, 0); -static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp_min, - set_temp_min, 0); -static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); -static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, - set_temp_max, 1); -static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp_min, - set_temp_min, 1); -static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); -static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, - set_temp_max, 2); -static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp_min, - set_temp_min, 2); -static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); -static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, - set_temp_max, 3); -static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO, show_temp_min, - set_temp_min, 3); -static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp, NULL, 4); -static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, - set_temp_max, 4); -static SENSOR_DEVICE_ATTR(temp5_min, S_IRUGO, show_temp_min, - set_temp_min, 4); - -static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 14); -static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 13); -static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 7); -static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 6); -static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_alarm, NULL, 5); -static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL, 4); -static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO, show_alarm, NULL, 3); -static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO, show_alarm, NULL, 2); -static SENSOR_DEVICE_ATTR(temp5_min_alarm, S_IRUGO, show_alarm, NULL, 1); -static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO, show_alarm, NULL, 0); - -static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_fault, NULL, 1); -static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_fault, NULL, 2); -static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_fault, NULL, 3); -static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_fault, NULL, 4); - -/* Attributes common to MAX1668, MAX1989 and MAX1805 */ -static struct attribute *max1668_attribute_common[] = { - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_min.dev_attr.attr, - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp2_min.dev_attr.attr, - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, - &sensor_dev_attr_temp3_min.dev_attr.attr, - &sensor_dev_attr_temp3_input.dev_attr.attr, - - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, - - &sensor_dev_attr_temp2_fault.dev_attr.attr, - &sensor_dev_attr_temp3_fault.dev_attr.attr, +static const struct hwmon_channel_info * const max1668_info[] = { + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_FAULT, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | + HWMON_T_FAULT), NULL }; -/* Attributes not present on MAX1805 */ -static struct attribute *max1668_attribute_unique[] = { - &sensor_dev_attr_temp4_max.dev_attr.attr, - &sensor_dev_attr_temp4_min.dev_attr.attr, - &sensor_dev_attr_temp4_input.dev_attr.attr, - &sensor_dev_attr_temp5_max.dev_attr.attr, - &sensor_dev_attr_temp5_min.dev_attr.attr, - &sensor_dev_attr_temp5_input.dev_attr.attr, - - &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, - &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp5_min_alarm.dev_attr.attr, - - &sensor_dev_attr_temp4_fault.dev_attr.attr, - &sensor_dev_attr_temp5_fault.dev_attr.attr, - NULL +static const struct hwmon_ops max1668_hwmon_ops = { + .is_visible = max1668_is_visible, + .read = max1668_read, + .write = max1668_write, }; -static umode_t max1668_attribute_mode(struct kobject *kobj, - struct attribute *attr, int index) -{ - umode_t ret = S_IRUGO; - if (read_only) - return ret; - if (attr == &sensor_dev_attr_temp1_max.dev_attr.attr || - attr == &sensor_dev_attr_temp2_max.dev_attr.attr || - attr == &sensor_dev_attr_temp3_max.dev_attr.attr || - attr == &sensor_dev_attr_temp4_max.dev_attr.attr || - attr == &sensor_dev_attr_temp5_max.dev_attr.attr || - attr == &sensor_dev_attr_temp1_min.dev_attr.attr || - attr == &sensor_dev_attr_temp2_min.dev_attr.attr || - attr == &sensor_dev_attr_temp3_min.dev_attr.attr || - attr == &sensor_dev_attr_temp4_min.dev_attr.attr || - attr == &sensor_dev_attr_temp5_min.dev_attr.attr) - ret |= S_IWUSR; - return ret; -} - -static const struct attribute_group max1668_group_common = { - .attrs = max1668_attribute_common, - .is_visible = max1668_attribute_mode -}; - -static const struct attribute_group max1668_group_unique = { - .attrs = max1668_attribute_unique, - .is_visible = max1668_attribute_mode +static const struct hwmon_chip_info max1668_chip_info = { + .ops = &max1668_hwmon_ops, + .info = max1668_info, }; /* Return 0 if detection is successful, -ENODEV otherwise */ @@ -391,6 +224,48 @@ static int max1668_detect(struct i2c_client *client, return 0; } +/* regmap */ + +static int max1668_reg_read(void *context, unsigned int reg, unsigned int *val) +{ + int ret; + + ret = i2c_smbus_read_byte_data(context, reg); + if (ret < 0) + return ret; + + *val = ret; + return 0; +} + +static int max1668_reg_write(void *context, unsigned int reg, unsigned int val) +{ + return i2c_smbus_write_byte_data(context, reg + 11, val); +} + +static bool max1668_regmap_is_volatile(struct device *dev, unsigned int reg) +{ + return reg <= MAX1668_REG_STAT2; +} + +static bool max1668_regmap_is_writeable(struct device *dev, unsigned int reg) +{ + return reg > MAX1668_REG_STAT2 && reg <= MAX1668_REG_LIML(4); +} + +static const struct regmap_config max1668_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .cache_type = REGCACHE_MAPLE, + .volatile_reg = max1668_regmap_is_volatile, + .writeable_reg = max1668_regmap_is_writeable, +}; + +static const struct regmap_bus max1668_regmap_bus = { + .reg_write = max1668_reg_write, + .reg_read = max1668_reg_read, +}; + static int max1668_probe(struct i2c_client *client) { struct i2c_adapter *adapter = client->adapter; @@ -405,24 +280,22 @@ static int max1668_probe(struct i2c_client *client) if (!data) return -ENOMEM; - data->client = client; - data->type = (uintptr_t)i2c_get_match_data(client); - mutex_init(&data->update_lock); + data->regmap = devm_regmap_init(dev, &max1668_regmap_bus, client, + &max1668_regmap_config); + if (IS_ERR(data->regmap)) + return PTR_ERR(data->regmap); - /* sysfs hooks */ - data->groups[0] = &max1668_group_common; - if (data->type == max1668 || data->type == max1989) - data->groups[1] = &max1668_group_unique; + data->channels = (uintptr_t)i2c_get_match_data(client); - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - data, data->groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &max1668_chip_info, NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } static const struct i2c_device_id max1668_id[] = { - { "max1668", max1668 }, - { "max1805", max1805 }, - { "max1989", max1989 }, + { "max1668", 5 }, + { "max1805", 3 }, + { "max1989", 5 }, { } }; MODULE_DEVICE_TABLE(i2c, max1668_id); diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c index f54720d..c955b0f 100644 --- a/drivers/hwmon/max6639.c +++ b/drivers/hwmon/max6639.c @@ -88,25 +88,16 @@ struct max6639_data { static int max6639_temp_read_input(struct device *dev, int channel, long *temp) { + u32 regs[2] = { MAX6639_REG_TEMP_EXT(channel), MAX6639_REG_TEMP(channel) }; struct max6639_data *data = dev_get_drvdata(dev); - unsigned int val; + u8 regvals[2]; int res; - /* - * Lock isn't needed as MAX6639_REG_TEMP wpnt change for at least 250ms after reading - * MAX6639_REG_TEMP_EXT - */ - res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val); - if (res < 0) - return res; - - *temp = val >> 5; - res = regmap_read(data->regmap, MAX6639_REG_TEMP(channel), &val); + res = regmap_multi_reg_read(data->regmap, regs, regvals, 2); if (res < 0) return res; - *temp |= val << 3; - *temp *= 125; + *temp = ((regvals[0] >> 5) | (regvals[1] << 3)) * 125; return 0; } @@ -290,8 +281,10 @@ static umode_t max6639_fan_is_visible(const void *_data, u32 attr, int channel) static int max6639_read_pwm(struct device *dev, u32 attr, int channel, long *pwm_val) { + u32 regs[2] = { MAX6639_REG_FAN_CONFIG3(channel), MAX6639_REG_GCONFIG }; struct max6639_data *data = dev_get_drvdata(dev); unsigned int val; + u8 regvals[2]; int res; u8 i; @@ -303,26 +296,13 @@ static int max6639_read_pwm(struct device *dev, u32 attr, int channel, *pwm_val = val * 255 / 120; return 0; case hwmon_pwm_freq: - mutex_lock(&data->update_lock); - res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val); - if (res < 0) { - mutex_unlock(&data->update_lock); - return res; - } - i = val & MAX6639_FAN_CONFIG3_FREQ_MASK; - - res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val); - if (res < 0) { - mutex_unlock(&data->update_lock); + res = regmap_multi_reg_read(data->regmap, regs, regvals, 2); + if (res < 0) return res; - } - - if (val & MAX6639_GCONFIG_PWM_FREQ_HI) + i = regvals[0] & MAX6639_FAN_CONFIG3_FREQ_MASK; + if (regvals[1] & MAX6639_GCONFIG_PWM_FREQ_HI) i |= 0x4; - i &= 0x7; *pwm_val = freq_table[i]; - - mutex_unlock(&data->update_lock); return 0; default: return -EOPNOTSUPP; diff --git a/drivers/hwmon/max6697.c b/drivers/hwmon/max6697.c index 20981f9..0735a1d 100644 --- a/drivers/hwmon/max6697.c +++ b/drivers/hwmon/max6697.c @@ -6,18 +6,17 @@ * Copyright (c) 2011 David George */ -#include -#include -#include -#include -#include -#include -#include +#include +#include #include +#include +#include +#include +#include #include #include - -#include +#include +#include enum chips { max6581, max6602, max6622, max6636, max6689, max6693, max6694, max6697, max6698, max6699 }; @@ -33,21 +32,36 @@ static const u8 MAX6697_REG_MAX[] = { static const u8 MAX6697_REG_CRIT[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27 }; +#define MAX6697_REG_MIN 0x30 /* - * Map device tree / platform data register bit map to chip bit map. + * Map device tree / internal register bit map to chip bit map. * Applies to alert register and over-temperature register. */ + +#define MAX6697_EXTERNAL_MASK_DT GENMASK(7, 1) +#define MAX6697_LOCAL_MASK_DT BIT(0) +#define MAX6697_EXTERNAL_MASK_CHIP GENMASK(6, 0) +#define MAX6697_LOCAL_MASK_CHIP BIT(7) + +/* alert - local channel is in bit 6 */ #define MAX6697_ALERT_MAP_BITS(reg) ((((reg) & 0x7e) >> 1) | \ (((reg) & 0x01) << 6) | ((reg) & 0x80)) -#define MAX6697_OVERT_MAP_BITS(reg) (((reg) >> 1) | (((reg) & 0x01) << 7)) -#define MAX6697_REG_STAT(n) (0x44 + (n)) +/* over-temperature - local channel is in bit 7 */ +#define MAX6697_OVERT_MAP_BITS(reg) \ + (FIELD_PREP(MAX6697_EXTERNAL_MASK_CHIP, FIELD_GET(MAX6697_EXTERNAL_MASK_DT, reg)) | \ + FIELD_PREP(MAX6697_LOCAL_MASK_CHIP, FIELD_GET(MAX6697_LOCAL_MASK_DT, reg))) + +#define MAX6697_REG_STAT_ALARM 0x44 +#define MAX6697_REG_STAT_CRIT 0x45 +#define MAX6697_REG_STAT_FAULT 0x46 +#define MAX6697_REG_STAT_MIN_ALARM 0x47 #define MAX6697_REG_CONFIG 0x41 -#define MAX6581_CONF_EXTENDED (1 << 1) -#define MAX6693_CONF_BETA (1 << 2) -#define MAX6697_CONF_RESISTANCE (1 << 3) -#define MAX6697_CONF_TIMEOUT (1 << 5) +#define MAX6581_CONF_EXTENDED BIT(1) +#define MAX6693_CONF_BETA BIT(2) +#define MAX6697_CONF_RESISTANCE BIT(3) +#define MAX6697_CONF_TIMEOUT BIT(5) #define MAX6697_REG_ALERT_MASK 0x42 #define MAX6697_REG_OVERT_MASK 0x43 @@ -67,24 +81,18 @@ struct max6697_chip_data { u32 have_crit; u32 have_fault; u8 valid_conf; - const u8 *alarm_map; }; struct max6697_data { - struct i2c_client *client; + struct regmap *regmap; enum chips type; const struct max6697_chip_data *chip; - int update_interval; /* in milli-seconds */ int temp_offset; /* in degrees C */ struct mutex update_lock; - unsigned long last_updated; /* In jiffies */ - bool valid; /* true if following fields are valid */ - /* 1x local and up to 7x remote */ - u8 temp[8][4]; /* [nr][0]=temp [1]=ext [2]=max [3]=crit */ #define MAX6697_TEMP_INPUT 0 #define MAX6697_TEMP_EXT 1 #define MAX6697_TEMP_MAX 2 @@ -92,11 +100,6 @@ struct max6697_data { u32 alarms; }; -/* Diode fault status bits on MAX6581 are right shifted by one bit */ -static const u8 max6581_alarm_map[] = { - 0, 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23 }; - static const struct max6697_chip_data max6697_chip_data[] = { [max6581] = { .channels = 8, @@ -104,7 +107,6 @@ static const struct max6697_chip_data max6697_chip_data[] = { .have_ext = 0x7f, .have_fault = 0xfe, .valid_conf = MAX6581_CONF_EXTENDED | MAX6697_CONF_TIMEOUT, - .alarm_map = max6581_alarm_map, }, [max6602] = { .channels = 5, @@ -173,545 +175,398 @@ static const struct max6697_chip_data max6697_chip_data[] = { }, }; -static inline int max6581_offset_to_millic(int val) +static int max6697_alarm_channel_map(int channel) { - return sign_extend32(val, 7) * 250; + switch (channel) { + case 0: + return 6; + case 7: + return 7; + default: + return channel - 1; + } } -static struct max6697_data *max6697_update_device(struct device *dev) +static int max6697_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) { + unsigned int offset_regs[2] = { MAX6581_REG_OFFSET_SELECT, MAX6581_REG_OFFSET }; + unsigned int temp_regs[2] = { MAX6697_REG_TEMP[channel], + MAX6697_REG_TEMP_EXT[channel] }; struct max6697_data *data = dev_get_drvdata(dev); - struct i2c_client *client = data->client; - struct max6697_data *ret = data; - int val; - int i; - u32 alarms; + struct regmap *regmap = data->regmap; + u8 regdata[2] = { }; + u32 regval; + int ret; - mutex_lock(&data->update_lock); - - if (data->valid && - !time_after(jiffies, data->last_updated - + msecs_to_jiffies(data->update_interval))) - goto abort; - - for (i = 0; i < data->chip->channels; i++) { - if (data->chip->have_ext & (1 << i)) { - val = i2c_smbus_read_byte_data(client, - MAX6697_REG_TEMP_EXT[i]); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp[i][MAX6697_TEMP_EXT] = val; - } + switch (attr) { + case hwmon_temp_input: + ret = regmap_multi_reg_read(regmap, temp_regs, regdata, + data->chip->have_ext & BIT(channel) ? 2 : 1); + if (ret) + return ret; + *val = (((regdata[0] - data->temp_offset) << 3) | (regdata[1] >> 5)) * 125; + break; + case hwmon_temp_max: + ret = regmap_read(regmap, MAX6697_REG_MAX[channel], ®val); + if (ret) + return ret; + *val = ((int)regval - data->temp_offset) * 1000; + break; + case hwmon_temp_crit: + ret = regmap_read(regmap, MAX6697_REG_CRIT[channel], ®val); + if (ret) + return ret; + *val = ((int)regval - data->temp_offset) * 1000; + break; + case hwmon_temp_min: + ret = regmap_read(regmap, MAX6697_REG_MIN, ®val); + if (ret) + return ret; + *val = ((int)regval - data->temp_offset) * 1000; + break; + case hwmon_temp_offset: + ret = regmap_multi_reg_read(regmap, offset_regs, regdata, 2); + if (ret) + return ret; - val = i2c_smbus_read_byte_data(client, MAX6697_REG_TEMP[i]); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp[i][MAX6697_TEMP_INPUT] = val; + if (!(regdata[0] & BIT(channel - 1))) + regdata[1] = 0; - val = i2c_smbus_read_byte_data(client, MAX6697_REG_MAX[i]); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp[i][MAX6697_TEMP_MAX] = val; - - if (data->chip->have_crit & (1 << i)) { - val = i2c_smbus_read_byte_data(client, - MAX6697_REG_CRIT[i]); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - data->temp[i][MAX6697_TEMP_CRIT] = val; - } - } - - alarms = 0; - for (i = 0; i < 3; i++) { - val = i2c_smbus_read_byte_data(client, MAX6697_REG_STAT(i)); - if (unlikely(val < 0)) { - ret = ERR_PTR(val); - goto abort; - } - alarms = (alarms << 8) | val; + *val = sign_extend32(regdata[1], 7) * 250; + break; + case hwmon_temp_fault: + ret = regmap_read(regmap, MAX6697_REG_STAT_FAULT, ®val); + if (ret) + return ret; + if (data->type == max6581) + *val = !!(regval & BIT(channel - 1)); + else + *val = !!(regval & BIT(channel)); + break; + case hwmon_temp_crit_alarm: + ret = regmap_read(regmap, MAX6697_REG_STAT_CRIT, ®val); + if (ret) + return ret; + /* + * In the MAX6581 datasheet revision 0 to 3, the local channel + * overtemperature status is reported in bit 6 of register 0x45, + * and the overtemperature status for remote channel 7 is + * reported in bit 7. In Revision 4 and later, the local channel + * overtemperature status is reported in bit 7, and the remote + * channel 7 overtemperature status is reported in bit 6. A real + * chip was found to match the functionality documented in + * Revision 4 and later. + */ + *val = !!(regval & BIT(channel ? channel - 1 : 7)); + break; + case hwmon_temp_max_alarm: + ret = regmap_read(regmap, MAX6697_REG_STAT_ALARM, ®val); + if (ret) + return ret; + *val = !!(regval & BIT(max6697_alarm_channel_map(channel))); + break; + case hwmon_temp_min_alarm: + ret = regmap_read(regmap, MAX6697_REG_STAT_MIN_ALARM, ®val); + if (ret) + return ret; + *val = !!(regval & BIT(max6697_alarm_channel_map(channel))); + break; + default: + return -EOPNOTSUPP; } - data->alarms = alarms; - data->last_updated = jiffies; - data->valid = true; -abort: - mutex_unlock(&data->update_lock); - - return ret; -} - -static ssize_t temp_input_show(struct device *dev, - struct device_attribute *devattr, char *buf) -{ - int index = to_sensor_dev_attr(devattr)->index; - struct max6697_data *data = max6697_update_device(dev); - int temp; - - if (IS_ERR(data)) - return PTR_ERR(data); - - temp = (data->temp[index][MAX6697_TEMP_INPUT] - data->temp_offset) << 3; - temp |= data->temp[index][MAX6697_TEMP_EXT] >> 5; - - return sprintf(buf, "%d\n", temp * 125); -} - -static ssize_t temp_show(struct device *dev, struct device_attribute *devattr, - char *buf) -{ - int nr = to_sensor_dev_attr_2(devattr)->nr; - int index = to_sensor_dev_attr_2(devattr)->index; - struct max6697_data *data = max6697_update_device(dev); - int temp; - - if (IS_ERR(data)) - return PTR_ERR(data); - - temp = data->temp[nr][index]; - temp -= data->temp_offset; - - return sprintf(buf, "%d\n", temp * 1000); -} - -static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - int index = to_sensor_dev_attr(attr)->index; - struct max6697_data *data = max6697_update_device(dev); - - if (IS_ERR(data)) - return PTR_ERR(data); - - if (data->chip->alarm_map) - index = data->chip->alarm_map[index]; - - return sprintf(buf, "%u\n", (data->alarms >> index) & 0x1); + return 0; } -static ssize_t temp_store(struct device *dev, - struct device_attribute *devattr, const char *buf, - size_t count) +static int max6697_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) { - int nr = to_sensor_dev_attr_2(devattr)->nr; - int index = to_sensor_dev_attr_2(devattr)->index; struct max6697_data *data = dev_get_drvdata(dev); - long temp; + struct regmap *regmap = data->regmap; int ret; - ret = kstrtol(buf, 10, &temp); - if (ret < 0) - return ret; - - mutex_lock(&data->update_lock); - temp = clamp_val(temp, -1000000, 1000000); /* prevent underflow */ - temp = DIV_ROUND_CLOSEST(temp, 1000) + data->temp_offset; - temp = clamp_val(temp, 0, data->type == max6581 ? 255 : 127); - data->temp[nr][index] = temp; - ret = i2c_smbus_write_byte_data(data->client, - index == 2 ? MAX6697_REG_MAX[nr] - : MAX6697_REG_CRIT[nr], - temp); - mutex_unlock(&data->update_lock); - - return ret < 0 ? ret : count; -} - -static ssize_t offset_store(struct device *dev, struct device_attribute *devattr, const char *buf, - size_t count) -{ - int val, ret, index, select; - struct max6697_data *data; - bool channel_enabled; - long temp; - - index = to_sensor_dev_attr(devattr)->index; - data = dev_get_drvdata(dev); - ret = kstrtol(buf, 10, &temp); - if (ret < 0) + switch (attr) { + case hwmon_temp_max: + val = clamp_val(val, -1000000, 1000000); /* prevent underflow */ + val = DIV_ROUND_CLOSEST(val, 1000) + data->temp_offset; + val = clamp_val(val, 0, data->type == max6581 ? 255 : 127); + return regmap_write(regmap, MAX6697_REG_MAX[channel], val); + case hwmon_temp_crit: + val = clamp_val(val, -1000000, 1000000); /* prevent underflow */ + val = DIV_ROUND_CLOSEST(val, 1000) + data->temp_offset; + val = clamp_val(val, 0, data->type == max6581 ? 255 : 127); + return regmap_write(regmap, MAX6697_REG_CRIT[channel], val); + case hwmon_temp_min: + val = clamp_val(val, -1000000, 1000000); /* prevent underflow */ + val = DIV_ROUND_CLOSEST(val, 1000) + data->temp_offset; + val = clamp_val(val, 0, 255); + return regmap_write(regmap, MAX6697_REG_MIN, val); + case hwmon_temp_offset: + mutex_lock(&data->update_lock); + val = clamp_val(val, MAX6581_OFFSET_MIN, MAX6581_OFFSET_MAX); + val = DIV_ROUND_CLOSEST(val, 250); + if (!val) { /* disable this (and only this) channel */ + ret = regmap_clear_bits(regmap, MAX6581_REG_OFFSET_SELECT, + BIT(channel - 1)); + } else { + /* enable channel and update offset */ + ret = regmap_set_bits(regmap, MAX6581_REG_OFFSET_SELECT, + BIT(channel - 1)); + if (ret) + goto unlock; + ret = regmap_write(regmap, MAX6581_REG_OFFSET, val); + } +unlock: + mutex_unlock(&data->update_lock); return ret; - - mutex_lock(&data->update_lock); - select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT); - if (select < 0) { - ret = select; - goto abort; - } - channel_enabled = (select & (1 << (index - 1))); - temp = clamp_val(temp, MAX6581_OFFSET_MIN, MAX6581_OFFSET_MAX); - val = DIV_ROUND_CLOSEST(temp, 250); - /* disable the offset for channel if the new offset is 0 */ - if (val == 0) { - if (channel_enabled) - ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT, - select & ~(1 << (index - 1))); - ret = ret < 0 ? ret : count; - goto abort; + default: + return -EOPNOTSUPP; } - if (!channel_enabled) { - ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET_SELECT, - select | (1 << (index - 1))); - if (ret < 0) - goto abort; - } - ret = i2c_smbus_write_byte_data(data->client, MAX6581_REG_OFFSET, val); - ret = ret < 0 ? ret : count; - -abort: - mutex_unlock(&data->update_lock); - return ret; } -static ssize_t offset_show(struct device *dev, struct device_attribute *devattr, char *buf) +static umode_t max6697_is_visible(const void *_data, enum hwmon_sensor_types type, + u32 attr, int channel) { - struct max6697_data *data; - int select, ret, index; - - index = to_sensor_dev_attr(devattr)->index; - data = dev_get_drvdata(dev); - mutex_lock(&data->update_lock); - select = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET_SELECT); - if (select < 0) - ret = select; - else if (select & (1 << (index - 1))) - ret = i2c_smbus_read_byte_data(data->client, MAX6581_REG_OFFSET); - else - ret = 0; - mutex_unlock(&data->update_lock); - return ret < 0 ? ret : sprintf(buf, "%d\n", max6581_offset_to_millic(ret)); -} - -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); -static SENSOR_DEVICE_ATTR_2_RW(temp1_max, temp, 0, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp1_crit, temp, 0, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); -static SENSOR_DEVICE_ATTR_2_RW(temp2_max, temp, 1, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp2_crit, temp, 1, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2); -static SENSOR_DEVICE_ATTR_2_RW(temp3_max, temp, 2, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp3_crit, temp, 2, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_input, 3); -static SENSOR_DEVICE_ATTR_2_RW(temp4_max, temp, 3, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp4_crit, temp, 3, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_input, 4); -static SENSOR_DEVICE_ATTR_2_RW(temp5_max, temp, 4, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp5_crit, temp, 4, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_input, 5); -static SENSOR_DEVICE_ATTR_2_RW(temp6_max, temp, 5, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp6_crit, temp, 5, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp7_input, temp_input, 6); -static SENSOR_DEVICE_ATTR_2_RW(temp7_max, temp, 6, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp7_crit, temp, 6, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp8_input, temp_input, 7); -static SENSOR_DEVICE_ATTR_2_RW(temp8_max, temp, 7, MAX6697_TEMP_MAX); -static SENSOR_DEVICE_ATTR_2_RW(temp8_crit, temp, 7, MAX6697_TEMP_CRIT); - -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 22); -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 16); -static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, alarm, 17); -static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, alarm, 18); -static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, alarm, 19); -static SENSOR_DEVICE_ATTR_RO(temp6_max_alarm, alarm, 20); -static SENSOR_DEVICE_ATTR_RO(temp7_max_alarm, alarm, 21); -static SENSOR_DEVICE_ATTR_RO(temp8_max_alarm, alarm, 23); - -static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 15); -static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 8); -static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, alarm, 9); -static SENSOR_DEVICE_ATTR_RO(temp4_crit_alarm, alarm, 10); -static SENSOR_DEVICE_ATTR_RO(temp5_crit_alarm, alarm, 11); -static SENSOR_DEVICE_ATTR_RO(temp6_crit_alarm, alarm, 12); -static SENSOR_DEVICE_ATTR_RO(temp7_crit_alarm, alarm, 13); -static SENSOR_DEVICE_ATTR_RO(temp8_crit_alarm, alarm, 14); - -static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 1); -static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 2); -static SENSOR_DEVICE_ATTR_RO(temp4_fault, alarm, 3); -static SENSOR_DEVICE_ATTR_RO(temp5_fault, alarm, 4); -static SENSOR_DEVICE_ATTR_RO(temp6_fault, alarm, 5); -static SENSOR_DEVICE_ATTR_RO(temp7_fault, alarm, 6); -static SENSOR_DEVICE_ATTR_RO(temp8_fault, alarm, 7); - -/* There is no offset for local temperature so starting from temp2 */ -static SENSOR_DEVICE_ATTR_RW(temp2_offset, offset, 1); -static SENSOR_DEVICE_ATTR_RW(temp3_offset, offset, 2); -static SENSOR_DEVICE_ATTR_RW(temp4_offset, offset, 3); -static SENSOR_DEVICE_ATTR_RW(temp5_offset, offset, 4); -static SENSOR_DEVICE_ATTR_RW(temp6_offset, offset, 5); -static SENSOR_DEVICE_ATTR_RW(temp7_offset, offset, 6); -static SENSOR_DEVICE_ATTR_RW(temp8_offset, offset, 7); - -static DEVICE_ATTR(dummy, 0, NULL, NULL); - -static umode_t max6697_is_visible(struct kobject *kobj, struct attribute *attr, - int index) -{ - struct device *dev = kobj_to_dev(kobj); - struct max6697_data *data = dev_get_drvdata(dev); + const struct max6697_data *data = _data; const struct max6697_chip_data *chip = data->chip; - int channel = index / 7; /* channel number */ - int nr = index % 7; /* attribute index within channel */ if (channel >= chip->channels) return 0; - if ((nr == 3 || nr == 4) && !(chip->have_crit & (1 << channel))) - return 0; - if (nr == 5 && !(chip->have_fault & (1 << channel))) - return 0; - /* offset reg is only supported on max6581 remote channels */ - if (nr == 6) - if (data->type != max6581 || channel == 0) - return 0; - - return attr->mode; + switch (attr) { + case hwmon_temp_max: + return 0644; + case hwmon_temp_input: + case hwmon_temp_max_alarm: + return 0444; + case hwmon_temp_min: + if (data->type == max6581) + return channel ? 0444 : 0644; + break; + case hwmon_temp_min_alarm: + if (data->type == max6581) + return 0444; + break; + case hwmon_temp_crit: + if (chip->have_crit & BIT(channel)) + return 0644; + break; + case hwmon_temp_crit_alarm: + if (chip->have_crit & BIT(channel)) + return 0444; + break; + case hwmon_temp_fault: + if (chip->have_fault & BIT(channel)) + return 0444; + break; + case hwmon_temp_offset: + if (data->type == max6581 && channel) + return 0644; + break; + default: + break; + } + return 0; } -/* - * max6697_is_visible uses the index into the following array to determine - * if attributes should be created or not. Any change in order or content - * must be matched in max6697_is_visible. - */ -static struct attribute *max6697_attributes[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp1_crit.dev_attr.attr, - &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, - &dev_attr_dummy.attr, - &dev_attr_dummy.attr, - - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp2_max.dev_attr.attr, - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_crit.dev_attr.attr, - &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp2_fault.dev_attr.attr, - &sensor_dev_attr_temp2_offset.dev_attr.attr, - - &sensor_dev_attr_temp3_input.dev_attr.attr, - &sensor_dev_attr_temp3_max.dev_attr.attr, - &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_crit.dev_attr.attr, - &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp3_fault.dev_attr.attr, - &sensor_dev_attr_temp3_offset.dev_attr.attr, - - &sensor_dev_attr_temp4_input.dev_attr.attr, - &sensor_dev_attr_temp4_max.dev_attr.attr, - &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp4_crit.dev_attr.attr, - &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp4_fault.dev_attr.attr, - &sensor_dev_attr_temp4_offset.dev_attr.attr, - - &sensor_dev_attr_temp5_input.dev_attr.attr, - &sensor_dev_attr_temp5_max.dev_attr.attr, - &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp5_crit.dev_attr.attr, - &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp5_fault.dev_attr.attr, - &sensor_dev_attr_temp5_offset.dev_attr.attr, - - &sensor_dev_attr_temp6_input.dev_attr.attr, - &sensor_dev_attr_temp6_max.dev_attr.attr, - &sensor_dev_attr_temp6_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp6_crit.dev_attr.attr, - &sensor_dev_attr_temp6_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp6_fault.dev_attr.attr, - &sensor_dev_attr_temp6_offset.dev_attr.attr, - - &sensor_dev_attr_temp7_input.dev_attr.attr, - &sensor_dev_attr_temp7_max.dev_attr.attr, - &sensor_dev_attr_temp7_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp7_crit.dev_attr.attr, - &sensor_dev_attr_temp7_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp7_fault.dev_attr.attr, - &sensor_dev_attr_temp7_offset.dev_attr.attr, - - &sensor_dev_attr_temp8_input.dev_attr.attr, - &sensor_dev_attr_temp8_max.dev_attr.attr, - &sensor_dev_attr_temp8_max_alarm.dev_attr.attr, - &sensor_dev_attr_temp8_crit.dev_attr.attr, - &sensor_dev_attr_temp8_crit_alarm.dev_attr.attr, - &sensor_dev_attr_temp8_fault.dev_attr.attr, - &sensor_dev_attr_temp8_offset.dev_attr.attr, +/* Return 0 if detection is successful, -ENODEV otherwise */ +static const struct hwmon_channel_info * const max6697_info[] = { + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET, + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT | + HWMON_T_MAX_ALARM | HWMON_T_CRIT_ALARM | + HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_FAULT | HWMON_T_OFFSET), NULL }; -static const struct attribute_group max6697_group = { - .attrs = max6697_attributes, .is_visible = max6697_is_visible, +static const struct hwmon_ops max6697_hwmon_ops = { + .is_visible = max6697_is_visible, + .read = max6697_read, + .write = max6697_write, }; -__ATTRIBUTE_GROUPS(max6697); -static void max6697_get_config_of(struct device_node *node, - struct max6697_platform_data *pdata) -{ - int len; - const __be32 *prop; - - pdata->smbus_timeout_disable = - of_property_read_bool(node, "smbus-timeout-disable"); - pdata->extended_range_enable = - of_property_read_bool(node, "extended-range-enable"); - pdata->beta_compensation = - of_property_read_bool(node, "beta-compensation-enable"); - - prop = of_get_property(node, "alert-mask", &len); - if (prop && len == sizeof(u32)) - pdata->alert_mask = be32_to_cpu(prop[0]); - prop = of_get_property(node, "over-temperature-mask", &len); - if (prop && len == sizeof(u32)) - pdata->over_temperature_mask = be32_to_cpu(prop[0]); - prop = of_get_property(node, "resistance-cancellation", &len); - if (prop) { - if (len == sizeof(u32)) - pdata->resistance_cancellation = be32_to_cpu(prop[0]); - else - pdata->resistance_cancellation = 0xfe; - } - prop = of_get_property(node, "transistor-ideality", &len); - if (prop && len == 2 * sizeof(u32)) { - pdata->ideality_mask = be32_to_cpu(prop[0]); - pdata->ideality_value = be32_to_cpu(prop[1]); - } -} +static const struct hwmon_chip_info max6697_chip_info = { + .ops = &max6697_hwmon_ops, + .info = max6697_info, +}; -static int max6697_init_chip(struct max6697_data *data, - struct i2c_client *client) +static int max6697_config_of(struct device_node *node, struct max6697_data *data) { - struct max6697_platform_data *pdata = dev_get_platdata(&client->dev); - struct max6697_platform_data p; const struct max6697_chip_data *chip = data->chip; - int factor = chip->channels; - int ret, reg; + struct regmap *regmap = data->regmap; + int ret, confreg; + u32 vals[2]; - /* - * Don't touch configuration if neither platform data nor OF - * configuration was specified. If that is the case, use the - * current chip configuration. - */ - if (!pdata && !client->dev.of_node) { - reg = i2c_smbus_read_byte_data(client, MAX6697_REG_CONFIG); - if (reg < 0) - return reg; - if (data->type == max6581) { - if (reg & MAX6581_CONF_EXTENDED) - data->temp_offset = 64; - reg = i2c_smbus_read_byte_data(client, - MAX6581_REG_RESISTANCE); - if (reg < 0) - return reg; - factor += hweight8(reg); - } else { - if (reg & MAX6697_CONF_RESISTANCE) - factor++; - } - goto done; - } - - if (client->dev.of_node) { - memset(&p, 0, sizeof(p)); - max6697_get_config_of(client->dev.of_node, &p); - pdata = &p; - } - - reg = 0; - if (pdata->smbus_timeout_disable && + confreg = 0; + if (of_property_read_bool(node, "smbus-timeout-disable") && (chip->valid_conf & MAX6697_CONF_TIMEOUT)) { - reg |= MAX6697_CONF_TIMEOUT; + confreg |= MAX6697_CONF_TIMEOUT; } - if (pdata->extended_range_enable && + if (of_property_read_bool(node, "extended-range-enable") && (chip->valid_conf & MAX6581_CONF_EXTENDED)) { - reg |= MAX6581_CONF_EXTENDED; + confreg |= MAX6581_CONF_EXTENDED; data->temp_offset = 64; } - if (pdata->resistance_cancellation && - (chip->valid_conf & MAX6697_CONF_RESISTANCE)) { - reg |= MAX6697_CONF_RESISTANCE; - factor++; - } - if (pdata->beta_compensation && + if (of_property_read_bool(node, "beta-compensation-enable") && (chip->valid_conf & MAX6693_CONF_BETA)) { - reg |= MAX6693_CONF_BETA; + confreg |= MAX6693_CONF_BETA; } - ret = i2c_smbus_write_byte_data(client, MAX6697_REG_CONFIG, reg); - if (ret < 0) + if (of_property_read_u32(node, "alert-mask", vals)) + vals[0] = 0; + ret = regmap_write(regmap, MAX6697_REG_ALERT_MASK, + MAX6697_ALERT_MAP_BITS(vals[0])); + if (ret) return ret; - ret = i2c_smbus_write_byte_data(client, MAX6697_REG_ALERT_MASK, - MAX6697_ALERT_MAP_BITS(pdata->alert_mask)); - if (ret < 0) + if (of_property_read_u32(node, "over-temperature-mask", vals)) + vals[0] = 0; + ret = regmap_write(regmap, MAX6697_REG_OVERT_MASK, + MAX6697_OVERT_MAP_BITS(vals[0])); + if (ret) return ret; - ret = i2c_smbus_write_byte_data(client, MAX6697_REG_OVERT_MASK, - MAX6697_OVERT_MAP_BITS(pdata->over_temperature_mask)); - if (ret < 0) - return ret; + if (data->type != max6581) { + if (of_property_read_bool(node, "resistance-cancellation") && + chip->valid_conf & MAX6697_CONF_RESISTANCE) { + confreg |= MAX6697_CONF_RESISTANCE; + } + } else { + if (of_property_read_u32(node, "resistance-cancellation", &vals[0])) { + if (of_property_read_bool(node, "resistance-cancellation")) + vals[0] = 0xfe; + else + vals[0] = 0; + } - if (data->type == max6581) { - factor += hweight8(pdata->resistance_cancellation >> 1); - ret = i2c_smbus_write_byte_data(client, MAX6581_REG_RESISTANCE, - pdata->resistance_cancellation >> 1); + vals[0] &= 0xfe; + ret = regmap_write(regmap, MAX6581_REG_RESISTANCE, vals[0] >> 1); if (ret < 0) return ret; - ret = i2c_smbus_write_byte_data(client, MAX6581_REG_IDEALITY, - pdata->ideality_value); + + if (of_property_read_u32_array(node, "transistor-ideality", vals, 2)) { + vals[0] = 0; + vals[1] = 0; + } + + ret = regmap_write(regmap, MAX6581_REG_IDEALITY, vals[1]); if (ret < 0) return ret; - ret = i2c_smbus_write_byte_data(client, - MAX6581_REG_IDEALITY_SELECT, - pdata->ideality_mask >> 1); + ret = regmap_write(regmap, MAX6581_REG_IDEALITY_SELECT, + (vals[0] & 0xfe) >> 1); if (ret < 0) return ret; } -done: - data->update_interval = factor * MAX6697_CONV_TIME; - return 0; + return regmap_write(regmap, MAX6697_REG_CONFIG, confreg); } +static int max6697_init_chip(struct device_node *np, struct max6697_data *data) +{ + unsigned int reg; + int ret; + + /* + * Don't touch configuration if there is no devicetree configuration. + * If that is the case, use the current chip configuration. + */ + if (!np) { + struct regmap *regmap = data->regmap; + + ret = regmap_read(regmap, MAX6697_REG_CONFIG, ®); + if (ret < 0) + return ret; + if (data->type == max6581) { + if (reg & MAX6581_CONF_EXTENDED) + data->temp_offset = 64; + ret = regmap_read(regmap, MAX6581_REG_RESISTANCE, ®); + } + } else { + ret = max6697_config_of(np, data); + } + + return ret; +} + +static bool max6697_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case 0x00 ... 0x09: /* temperature high bytes */ + case 0x44 ... 0x47: /* status */ + case 0x51 ... 0x58: /* temperature low bytes */ + return true; + default: + return false; + } +} + +static bool max6697_writeable_reg(struct device *dev, unsigned int reg) +{ + return reg != 0x0a && reg != 0x0f && !max6697_volatile_reg(dev, reg); +} + +static const struct regmap_config max6697_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x58, + .writeable_reg = max6697_writeable_reg, + .volatile_reg = max6697_volatile_reg, + .cache_type = REGCACHE_MAPLE, +}; + static int max6697_probe(struct i2c_client *client) { - struct i2c_adapter *adapter = client->adapter; struct device *dev = &client->dev; struct max6697_data *data; struct device *hwmon_dev; + struct regmap *regmap; int err; - if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -ENODEV; + regmap = regmap_init_i2c(client, &max6697_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); data = devm_kzalloc(dev, sizeof(struct max6697_data), GFP_KERNEL); if (!data) return -ENOMEM; + data->regmap = regmap; data->type = (uintptr_t)i2c_get_match_data(client); data->chip = &max6697_chip_data[data->type]; - data->client = client; mutex_init(&data->update_lock); - err = max6697_init_chip(data, client); + err = max6697_init_chip(client->dev.of_node, data); if (err) return err; - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - data, - max6697_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, + &max6697_chip_info, NULL); return PTR_ERR_OR_ZERO(hwmon_dev); } diff --git a/drivers/hwmon/nct6775-platform.c b/drivers/hwmon/nct6775-platform.c index 9aa4dcf..096f1da 100644 --- a/drivers/hwmon/nct6775-platform.c +++ b/drivers/hwmon/nct6775-platform.c @@ -1269,6 +1269,7 @@ static const char * const asus_msi_boards[] = { "EX-B760M-V5 D4", "EX-H510M-V3", "EX-H610M-V3 D4", + "G15CF", "PRIME A620M-A", "PRIME B560-PLUS", "PRIME B560-PLUS AC-HES", diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c index 97e8c64..8c9351d 100644 --- a/drivers/hwmon/nct7802.c +++ b/drivers/hwmon/nct7802.c @@ -229,41 +229,34 @@ abort: static int nct7802_read_fan(struct nct7802_data *data, u8 reg_fan) { - unsigned int f1, f2; + unsigned int regs[2] = {reg_fan, REG_FANCOUNT_LOW}; + u8 f[2]; int ret; - mutex_lock(&data->access_lock); - ret = regmap_read(data->regmap, reg_fan, &f1); - if (ret < 0) - goto abort; - ret = regmap_read(data->regmap, REG_FANCOUNT_LOW, &f2); - if (ret < 0) - goto abort; - ret = (f1 << 5) | (f2 >> 3); + ret = regmap_multi_reg_read(data->regmap, regs, f, 2); + if (ret) + return ret; + ret = (f[0] << 5) | (f[1] >> 3); /* convert fan count to rpm */ if (ret == 0x1fff) /* maximum value, assume fan is stopped */ ret = 0; else if (ret) ret = DIV_ROUND_CLOSEST(1350000U, ret); -abort: - mutex_unlock(&data->access_lock); return ret; } static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, u8 reg_fan_high) { - unsigned int f1, f2; + unsigned int regs[2] = {reg_fan_low, reg_fan_high}; + u8 f[2]; int ret; - mutex_lock(&data->access_lock); - ret = regmap_read(data->regmap, reg_fan_low, &f1); - if (ret < 0) - goto abort; - ret = regmap_read(data->regmap, reg_fan_high, &f2); + ret = regmap_multi_reg_read(data->regmap, regs, f, 2); if (ret < 0) - goto abort; - ret = f1 | ((f2 & 0xf8) << 5); + return ret; + + ret = f[0] | ((f[1] & 0xf8) << 5); /* convert fan count to rpm */ if (ret == 0x1fff) /* maximum value, assume no limit */ ret = 0; @@ -271,8 +264,6 @@ static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low, ret = DIV_ROUND_CLOSEST(1350000U, ret); else ret = 1350000U; -abort: - mutex_unlock(&data->access_lock); return ret; } @@ -302,33 +293,26 @@ static u8 nct7802_vmul[] = { 4, 2, 2, 2, 2 }; static int nct7802_read_voltage(struct nct7802_data *data, int nr, int index) { - unsigned int v1, v2; + u8 v[2]; int ret; - mutex_lock(&data->access_lock); if (index == 0) { /* voltage */ - ret = regmap_read(data->regmap, REG_VOLTAGE[nr], &v1); - if (ret < 0) - goto abort; - ret = regmap_read(data->regmap, REG_VOLTAGE_LOW, &v2); + unsigned int regs[2] = {REG_VOLTAGE[nr], REG_VOLTAGE_LOW}; + + ret = regmap_multi_reg_read(data->regmap, regs, v, 2); if (ret < 0) - goto abort; - ret = ((v1 << 2) | (v2 >> 6)) * nct7802_vmul[nr]; + return ret; + ret = ((v[0] << 2) | (v[1] >> 6)) * nct7802_vmul[nr]; } else { /* limit */ int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr]; + unsigned int regs[2] = {REG_VOLTAGE_LIMIT_LSB[index - 1][nr], + REG_VOLTAGE_LIMIT_MSB[nr]}; - ret = regmap_read(data->regmap, - REG_VOLTAGE_LIMIT_LSB[index - 1][nr], &v1); - if (ret < 0) - goto abort; - ret = regmap_read(data->regmap, REG_VOLTAGE_LIMIT_MSB[nr], - &v2); + ret = regmap_multi_reg_read(data->regmap, regs, v, 2); if (ret < 0) - goto abort; - ret = (v1 | ((v2 << shift) & 0x300)) * nct7802_vmul[nr]; + return ret; + ret = (v[0] | ((v[1] << shift) & 0x300)) * nct7802_vmul[nr]; } -abort: - mutex_unlock(&data->access_lock); return ret; } @@ -1145,17 +1129,14 @@ static int nct7802_configure_channels(struct device *dev, { /* Enable local temperature sensor by default */ u8 mode_mask = MODE_LTD_EN, mode_val = MODE_LTD_EN; - struct device_node *node; int err; if (dev->of_node) { - for_each_child_of_node(dev->of_node, node) { + for_each_child_of_node_scoped(dev->of_node, node) { err = nct7802_get_channel_config(dev, node, &mode_mask, &mode_val); - if (err) { - of_node_put(node); + if (err) return err; - } } } diff --git a/drivers/hwmon/npcm750-pwm-fan.c b/drivers/hwmon/npcm750-pwm-fan.c index bc8db1d..db3b551 100644 --- a/drivers/hwmon/npcm750-pwm-fan.c +++ b/drivers/hwmon/npcm750-pwm-fan.c @@ -927,7 +927,7 @@ static int npcm7xx_en_pwm_fan(struct device *dev, static int npcm7xx_pwm_fan_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *np, *child; + struct device_node *np; struct npcm7xx_pwm_fan_data *data; struct resource *res; struct device *hwmon; @@ -1004,11 +1004,10 @@ static int npcm7xx_pwm_fan_probe(struct platform_device *pdev) } } - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { ret = npcm7xx_en_pwm_fan(dev, child, data); if (ret) { dev_err(dev, "enable pwm and fan failed\n"); - of_node_put(child); return ret; } } diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c index ef75b63..b535290 100644 --- a/drivers/hwmon/ntc_thermistor.c +++ b/drivers/hwmon/ntc_thermistor.c @@ -62,6 +62,7 @@ static const struct platform_device_id ntc_thermistor_id[] = { [NTC_SSG1404001221] = { "ssg1404_001221", TYPE_NCPXXWB473 }, [NTC_LAST] = { }, }; +MODULE_DEVICE_TABLE(platform, ntc_thermistor_id); /* * A compensation table should be sorted by the values of .ohm diff --git a/drivers/hwmon/oxp-sensors.c b/drivers/hwmon/oxp-sensors.c index 8d3b0f8..83730d9 100644 --- a/drivers/hwmon/oxp-sensors.c +++ b/drivers/hwmon/oxp-sensors.c @@ -1,18 +1,21 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Platform driver for OneXPlayer, AOK ZOE, and Aya Neo Handhelds that expose - * fan reading and control via hwmon sysfs. + * Platform driver for OneXPlayer, AOKZOE, AYANEO, and OrangePi Handhelds + * that expose fan reading and control via hwmon sysfs. * * Old OXP boards have the same DMI strings and they are told apart by - * the boot cpu vendor (Intel/AMD). Currently only AMD boards are - * supported but the code is made to be simple to add other handheld - * boards in the future. + * the boot cpu vendor (Intel/AMD). Of these older models only AMD is + * supported. + * * Fan control is provided via pwm interface in the range [0-255]. * Old AMD boards use [0-100] as range in the EC, the written value is * scaled to accommodate for that. Newer boards like the mini PRO and - * AOK ZOE are not scaled but have the same EC layout. + * AOKZOE are not scaled but have the same EC layout. Newer models + * like the 2 and X1 are [0-184] and are scaled to 0-255. OrangePi + * are [1-244] and scaled to 0-255. * * Copyright (C) 2022 Joaquín I. Aramendía + * Copyright (C) 2024 Derek J. Clark */ #include @@ -43,32 +46,48 @@ enum oxp_board { aok_zoe_a1 = 1, aya_neo_2, aya_neo_air, + aya_neo_air_1s, aya_neo_air_plus_mendo, aya_neo_air_pro, + aya_neo_flip, aya_neo_geek, + aya_neo_kun, + orange_pi_neo, + oxp_2, + oxp_fly, oxp_mini_amd, oxp_mini_amd_a07, oxp_mini_amd_pro, + oxp_x1, }; static enum oxp_board board; /* Fan reading and PWM */ -#define OXP_SENSOR_FAN_REG 0x76 /* Fan reading is 2 registers long */ -#define OXP_SENSOR_PWM_ENABLE_REG 0x4A /* PWM enable is 1 register long */ -#define OXP_SENSOR_PWM_REG 0x4B /* PWM reading is 1 register long */ +#define OXP_SENSOR_FAN_REG 0x76 /* Fan reading is 2 registers long */ +#define OXP_2_SENSOR_FAN_REG 0x58 /* Fan reading is 2 registers long */ +#define OXP_SENSOR_PWM_ENABLE_REG 0x4A /* PWM enable is 1 register long */ +#define OXP_SENSOR_PWM_REG 0x4B /* PWM reading is 1 register long */ +#define PWM_MODE_AUTO 0x00 +#define PWM_MODE_MANUAL 0x01 + +/* OrangePi fan reading and PWM */ +#define ORANGEPI_SENSOR_FAN_REG 0x78 /* Fan reading is 2 registers long */ +#define ORANGEPI_SENSOR_PWM_ENABLE_REG 0x40 /* PWM enable is 1 register long */ +#define ORANGEPI_SENSOR_PWM_REG 0x38 /* PWM reading is 1 register long */ /* Turbo button takeover function - * Older boards have different values and EC registers + * Different boards have different values and EC registers * for the same function */ -#define OXP_OLD_TURBO_SWITCH_REG 0x1E -#define OXP_OLD_TURBO_TAKE_VAL 0x01 -#define OXP_OLD_TURBO_RETURN_VAL 0x00 +#define OXP_TURBO_SWITCH_REG 0xF1 /* Mini Pro, OneXFly, AOKZOE */ +#define OXP_2_TURBO_SWITCH_REG 0xEB /* OXP2 and X1 */ +#define OXP_MINI_TURBO_SWITCH_REG 0x1E /* Mini AO7 */ + +#define OXP_MINI_TURBO_TAKE_VAL 0x01 /* Mini AO7 */ +#define OXP_TURBO_TAKE_VAL 0x40 /* All other models */ -#define OXP_TURBO_SWITCH_REG 0xF1 -#define OXP_TURBO_TAKE_VAL 0x40 -#define OXP_TURBO_RETURN_VAL 0x00 +#define OXP_TURBO_RETURN_VAL 0x00 /* Common return val */ static const struct dmi_system_id dmi_table[] = { { @@ -88,7 +107,7 @@ static const struct dmi_system_id dmi_table[] = { { .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), - DMI_EXACT_MATCH(DMI_BOARD_NAME, "AYANEO 2"), + DMI_MATCH(DMI_BOARD_NAME, "AYANEO 2"), }, .driver_data = (void *)aya_neo_2, }, @@ -102,6 +121,13 @@ static const struct dmi_system_id dmi_table[] = { { .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "AIR 1S"), + }, + .driver_data = (void *)aya_neo_air_1s, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "AB05-Mendocino"), }, .driver_data = (void *)aya_neo_air_plus_mendo, @@ -116,12 +142,33 @@ static const struct dmi_system_id dmi_table[] = { { .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), - DMI_EXACT_MATCH(DMI_BOARD_NAME, "GEEK"), + DMI_MATCH(DMI_BOARD_NAME, "FLIP"), + }, + .driver_data = (void *)aya_neo_flip, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), + DMI_MATCH(DMI_BOARD_NAME, "GEEK"), }, .driver_data = (void *)aya_neo_geek, }, { .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "AYANEO"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "KUN"), + }, + .driver_data = (void *)aya_neo_kun, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "OrangePi"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "NEO-01"), + }, + .driver_data = (void *)orange_pi_neo, + }, + { + .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONE XPLAYER"), }, @@ -130,6 +177,20 @@ static const struct dmi_system_id dmi_table[] = { { .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"), + DMI_MATCH(DMI_BOARD_NAME, "ONEXPLAYER 2"), + }, + .driver_data = (void *)oxp_2, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1"), + }, + .driver_data = (void *)oxp_fly, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"), DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER mini A07"), }, .driver_data = (void *)oxp_mini_amd_a07, @@ -141,6 +202,13 @@ static const struct dmi_system_id dmi_table[] = { }, .driver_data = (void *)oxp_mini_amd_pro, }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"), + DMI_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1"), + }, + .driver_data = (void *)oxp_x1, + }, {}, }; @@ -192,14 +260,20 @@ static int tt_toggle_enable(void) switch (board) { case oxp_mini_amd_a07: - reg = OXP_OLD_TURBO_SWITCH_REG; - val = OXP_OLD_TURBO_TAKE_VAL; + reg = OXP_MINI_TURBO_SWITCH_REG; + val = OXP_MINI_TURBO_TAKE_VAL; break; - case oxp_mini_amd_pro: case aok_zoe_a1: + case oxp_fly: + case oxp_mini_amd_pro: reg = OXP_TURBO_SWITCH_REG; val = OXP_TURBO_TAKE_VAL; break; + case oxp_2: + case oxp_x1: + reg = OXP_2_TURBO_SWITCH_REG; + val = OXP_TURBO_TAKE_VAL; + break; default: return -EINVAL; } @@ -213,14 +287,20 @@ static int tt_toggle_disable(void) switch (board) { case oxp_mini_amd_a07: - reg = OXP_OLD_TURBO_SWITCH_REG; - val = OXP_OLD_TURBO_RETURN_VAL; + reg = OXP_MINI_TURBO_SWITCH_REG; + val = OXP_TURBO_RETURN_VAL; break; - case oxp_mini_amd_pro: case aok_zoe_a1: + case oxp_fly: + case oxp_mini_amd_pro: reg = OXP_TURBO_SWITCH_REG; val = OXP_TURBO_RETURN_VAL; break; + case oxp_2: + case oxp_x1: + reg = OXP_2_TURBO_SWITCH_REG; + val = OXP_TURBO_RETURN_VAL; + break; default: return -EINVAL; } @@ -233,8 +313,11 @@ static umode_t tt_toggle_is_visible(struct kobject *kobj, { switch (board) { case aok_zoe_a1: + case oxp_2: + case oxp_fly: case oxp_mini_amd_a07: case oxp_mini_amd_pro: + case oxp_x1: return attr->mode; default: break; @@ -273,12 +356,17 @@ static ssize_t tt_toggle_show(struct device *dev, switch (board) { case oxp_mini_amd_a07: - reg = OXP_OLD_TURBO_SWITCH_REG; + reg = OXP_MINI_TURBO_SWITCH_REG; break; - case oxp_mini_amd_pro: case aok_zoe_a1: + case oxp_fly: + case oxp_mini_amd_pro: reg = OXP_TURBO_SWITCH_REG; break; + case oxp_2: + case oxp_x1: + reg = OXP_2_TURBO_SWITCH_REG; + break; default: return -EINVAL; } @@ -295,12 +383,53 @@ static DEVICE_ATTR_RW(tt_toggle); /* PWM enable/disable functions */ static int oxp_pwm_enable(void) { - return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, 0x01); + switch (board) { + case orange_pi_neo: + return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL); + case aok_zoe_a1: + case aya_neo_2: + case aya_neo_air: + case aya_neo_air_plus_mendo: + case aya_neo_air_pro: + case aya_neo_flip: + case aya_neo_geek: + case aya_neo_kun: + case oxp_2: + case oxp_fly: + case oxp_mini_amd: + case oxp_mini_amd_a07: + case oxp_mini_amd_pro: + case oxp_x1: + return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL); + default: + return -EINVAL; + } } static int oxp_pwm_disable(void) { - return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, 0x00); + switch (board) { + case orange_pi_neo: + return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO); + case aok_zoe_a1: + case aya_neo_2: + case aya_neo_air: + case aya_neo_air_1s: + case aya_neo_air_plus_mendo: + case aya_neo_air_pro: + case aya_neo_flip: + case aya_neo_geek: + case aya_neo_kun: + case oxp_2: + case oxp_fly: + case oxp_mini_amd: + case oxp_mini_amd_a07: + case oxp_mini_amd_pro: + case oxp_x1: + return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO); + default: + return -EINVAL; + } } /* Callbacks for hwmon interface */ @@ -326,7 +455,30 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type, case hwmon_fan: switch (attr) { case hwmon_fan_input: - return read_from_ec(OXP_SENSOR_FAN_REG, 2, val); + switch (board) { + case orange_pi_neo: + return read_from_ec(ORANGEPI_SENSOR_FAN_REG, 2, val); + case oxp_2: + case oxp_x1: + return read_from_ec(OXP_2_SENSOR_FAN_REG, 2, val); + case aok_zoe_a1: + case aya_neo_2: + case aya_neo_air: + case aya_neo_air_1s: + case aya_neo_air_plus_mendo: + case aya_neo_air_pro: + case aya_neo_flip: + case aya_neo_geek: + case aya_neo_kun: + case oxp_fly: + case oxp_mini_amd: + case oxp_mini_amd_a07: + case oxp_mini_amd_pro: + return read_from_ec(OXP_SENSOR_FAN_REG, 2, val); + default: + break; + } + break; default: break; } @@ -334,27 +486,72 @@ static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type, case hwmon_pwm: switch (attr) { case hwmon_pwm_input: - ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val); - if (ret) - return ret; switch (board) { + case orange_pi_neo: + ret = read_from_ec(ORANGEPI_SENSOR_PWM_REG, 1, val); + if (ret) + return ret; + /* scale from range [1-244] */ + *val = ((*val - 1) * 254 / 243) + 1; + break; + case oxp_2: + case oxp_x1: + ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val); + if (ret) + return ret; + /* scale from range [0-184] */ + *val = (*val * 255) / 184; + break; case aya_neo_2: case aya_neo_air: + case aya_neo_air_1s: case aya_neo_air_plus_mendo: case aya_neo_air_pro: + case aya_neo_flip: case aya_neo_geek: + case aya_neo_kun: case oxp_mini_amd: case oxp_mini_amd_a07: + ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val); + if (ret) + return ret; + /* scale from range [0-100] */ *val = (*val * 255) / 100; break; - case oxp_mini_amd_pro: case aok_zoe_a1: + case oxp_fly: + case oxp_mini_amd_pro: default: + ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val); + if (ret) + return ret; break; } return 0; case hwmon_pwm_enable: - return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val); + switch (board) { + case orange_pi_neo: + return read_from_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, 1, val); + case aok_zoe_a1: + case aya_neo_2: + case aya_neo_air: + case aya_neo_air_1s: + case aya_neo_air_plus_mendo: + case aya_neo_air_pro: + case aya_neo_flip: + case aya_neo_geek: + case aya_neo_kun: + case oxp_2: + case oxp_fly: + case oxp_mini_amd: + case oxp_mini_amd_a07: + case oxp_mini_amd_pro: + case oxp_x1: + return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val); + default: + break; + } + break; default: break; } @@ -381,21 +578,36 @@ static int oxp_platform_write(struct device *dev, enum hwmon_sensor_types type, if (val < 0 || val > 255) return -EINVAL; switch (board) { + case orange_pi_neo: + /* scale to range [1-244] */ + val = ((val - 1) * 243 / 254) + 1; + return write_to_ec(ORANGEPI_SENSOR_PWM_REG, val); + case oxp_2: + case oxp_x1: + /* scale to range [0-184] */ + val = (val * 184) / 255; + return write_to_ec(OXP_SENSOR_PWM_REG, val); case aya_neo_2: case aya_neo_air: + case aya_neo_air_1s: case aya_neo_air_plus_mendo: case aya_neo_air_pro: + case aya_neo_flip: case aya_neo_geek: + case aya_neo_kun: case oxp_mini_amd: case oxp_mini_amd_a07: + /* scale to range [0-100] */ val = (val * 100) / 255; - break; + return write_to_ec(OXP_SENSOR_PWM_REG, val); case aok_zoe_a1: + case oxp_fly: case oxp_mini_amd_pro: + return write_to_ec(OXP_SENSOR_PWM_REG, val); default: break; } - return write_to_ec(OXP_SENSOR_PWM_REG, val); + break; default: break; } @@ -467,19 +679,20 @@ static int __init oxp_platform_init(void) { const struct dmi_system_id *dmi_entry; - /* - * Have to check for AMD processor here because DMI strings are the - * same between Intel and AMD boards, the only way to tell them apart - * is the CPU. - * Intel boards seem to have different EC registers and values to - * read/write. - */ dmi_entry = dmi_first_match(dmi_table); - if (!dmi_entry || boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + if (!dmi_entry) return -ENODEV; board = (enum oxp_board)(unsigned long)dmi_entry->driver_data; + /* + * Have to check for AMD processor here because DMI strings are the same + * between Intel and AMD boards on older OneXPlayer devices, the only way + * to tell them apart is the CPU. Old Intel boards have an unsupported EC. + */ + if (board == oxp_mini_amd && boot_cpu_data.x86_vendor != X86_VENDOR_AMD) + return -ENODEV; + oxp_platform_device = platform_create_bundle(&oxp_platform_driver, oxp_platform_probe, NULL, 0, NULL, 0); diff --git a/drivers/hwmon/pc87360.c b/drivers/hwmon/pc87360.c index 9e9681b..788b5d5 100644 --- a/drivers/hwmon/pc87360.c +++ b/drivers/hwmon/pc87360.c @@ -1315,7 +1315,7 @@ static void pc87360_init_device(struct platform_device *pdev, (reg & 0xC0) | 0x11); } - nr = data->innr < 11 ? data->innr : 11; + nr = min(data->innr, 11); for (i = 0; i < nr; i++) { reg = pc87360_read_value(data, LD_IN, i, PC87365_REG_IN_STATUS); diff --git a/drivers/hwmon/pmbus/max15301.c b/drivers/hwmon/pmbus/max15301.c index 986404f..f5367a7 100644 --- a/drivers/hwmon/pmbus/max15301.c +++ b/drivers/hwmon/pmbus/max15301.c @@ -31,8 +31,6 @@ MODULE_DEVICE_TABLE(i2c, max15301_id); struct max15301_data { int id; - ktime_t access; /* Chip access time */ - int delay; /* Delay between chip accesses in us */ struct pmbus_driver_info info; }; @@ -55,89 +53,6 @@ static struct max15301_data max15301_data = { } }; -/* This chip needs a delay between accesses */ -static inline void max15301_wait(const struct max15301_data *data) -{ - if (data->delay) { - s64 delta = ktime_us_delta(ktime_get(), data->access); - - if (delta < data->delay) - udelay(data->delay - delta); - } -} - -static int max15301_read_word_data(struct i2c_client *client, int page, - int phase, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct max15301_data *data = to_max15301_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - if (reg >= PMBUS_VIRT_BASE) - return -ENXIO; - - max15301_wait(data); - ret = pmbus_read_word_data(client, page, phase, reg); - data->access = ktime_get(); - - return ret; -} - -static int max15301_read_byte_data(struct i2c_client *client, int page, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct max15301_data *data = to_max15301_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - max15301_wait(data); - ret = pmbus_read_byte_data(client, page, reg); - data->access = ktime_get(); - - return ret; -} - -static int max15301_write_word_data(struct i2c_client *client, int page, int reg, - u16 word) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct max15301_data *data = to_max15301_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - if (reg >= PMBUS_VIRT_BASE) - return -ENXIO; - - max15301_wait(data); - ret = pmbus_write_word_data(client, page, reg, word); - data->access = ktime_get(); - - return ret; -} - -static int max15301_write_byte(struct i2c_client *client, int page, u8 value) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct max15301_data *data = to_max15301_data(info); - int ret; - - if (page > 0) - return -ENXIO; - - max15301_wait(data); - ret = pmbus_write_byte(client, page, value); - data->access = ktime_get(); - - return ret; -} - static int max15301_probe(struct i2c_client *client) { int status; @@ -164,12 +79,7 @@ static int max15301_probe(struct i2c_client *client) return -ENODEV; } - max15301_data.delay = delay; - - info->read_byte_data = max15301_read_byte_data; - info->read_word_data = max15301_read_word_data; - info->write_byte = max15301_write_byte; - info->write_word_data = max15301_write_word_data; + info->access_delay = delay; return pmbus_do_probe(client, info); } diff --git a/drivers/hwmon/pmbus/mpq7932.c b/drivers/hwmon/pmbus/mpq7932.c index 6748786..2dcb6da 100644 --- a/drivers/hwmon/pmbus/mpq7932.c +++ b/drivers/hwmon/pmbus/mpq7932.c @@ -35,7 +35,7 @@ struct mpq7932_data { }; #if IS_ENABLED(CONFIG_SENSORS_MPQ7932_REGULATOR) -static struct regulator_desc mpq7932_regulators_desc[] = { +static const struct regulator_desc mpq7932_regulators_desc[] = { PMBUS_REGULATOR_STEP("buck", 0, MPQ7932_N_VOLTAGES, MPQ7932_UV_STEP, MPQ7932_BUCK_UV_MIN), PMBUS_REGULATOR_STEP("buck", 1, MPQ7932_N_VOLTAGES, diff --git a/drivers/hwmon/pmbus/pli1209bc.c b/drivers/hwmon/pmbus/pli1209bc.c index 2c6c9ec..178e0cd 100644 --- a/drivers/hwmon/pmbus/pli1209bc.c +++ b/drivers/hwmon/pmbus/pli1209bc.c @@ -54,30 +54,6 @@ static int pli1209bc_read_word_data(struct i2c_client *client, int page, } } -static int pli1209bc_write_byte(struct i2c_client *client, int page, u8 reg) -{ - int ret; - - switch (reg) { - case PMBUS_CLEAR_FAULTS: - ret = pmbus_write_byte(client, page, reg); - /* - * PLI1209 takes 230 usec to execute the CLEAR_FAULTS command. - * During that time it's busy and NACKs all requests on the - * SMBUS interface. It also NACKs reads on PMBUS_STATUS_BYTE - * making it impossible to poll the BUSY flag. - * - * Just wait for not BUSY unconditionally. - */ - usleep_range(250, 300); - break; - default: - ret = -ENODATA; - break; - } - return ret; -} - #if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR) static const struct regulator_desc pli1209bc_reg_desc = { .name = "vout2", @@ -127,7 +103,7 @@ static struct pmbus_driver_info pli1209bc_info = { | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT, .read_word_data = pli1209bc_read_word_data, - .write_byte = pli1209bc_write_byte, + .write_delay = 250, #if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR) .num_regulators = 1, .reg_desc = &pli1209bc_reg_desc, diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index 0bea603..d605412 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -472,6 +472,16 @@ struct pmbus_driver_info { /* custom attributes */ const struct attribute_group **groups; + + /* + * Some chips need a little delay between SMBus communication. When + * set, the generic PMBus helper functions will wait if necessary + * to meet this requirement. The access delay is honored after + * every SMBus operation. The write delay is only honored after + * SMBus write operations. + */ + int access_delay; /* in microseconds */ + int write_delay; /* in microseconds */ }; /* Regulator ops */ diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index e592446..ce7fd4c 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -110,6 +111,8 @@ struct pmbus_data { int vout_low[PMBUS_PAGES]; /* voltage low margin */ int vout_high[PMBUS_PAGES]; /* voltage high margin */ + ktime_t write_time; /* Last SMBUS write timestamp */ + ktime_t access_time; /* Last SMBUS access timestamp */ }; struct pmbus_debugfs_entry { @@ -160,6 +163,39 @@ void pmbus_set_update(struct i2c_client *client, u8 reg, bool update) } EXPORT_SYMBOL_NS_GPL(pmbus_set_update, PMBUS); +/* Some chips need a delay between accesses. */ +static void pmbus_wait(struct i2c_client *client) +{ + struct pmbus_data *data = i2c_get_clientdata(client); + const struct pmbus_driver_info *info = data->info; + s64 delta; + + if (info->access_delay) { + delta = ktime_us_delta(ktime_get(), data->access_time); + + if (delta < info->access_delay) + fsleep(info->access_delay - delta); + } else if (info->write_delay) { + delta = ktime_us_delta(ktime_get(), data->write_time); + + if (delta < info->write_delay) + fsleep(info->write_delay - delta); + } +} + +/* Sets the last accessed timestamp for pmbus_wait */ +static void pmbus_update_ts(struct i2c_client *client, bool write_op) +{ + struct pmbus_data *data = i2c_get_clientdata(client); + const struct pmbus_driver_info *info = data->info; + + if (info->access_delay) { + data->access_time = ktime_get(); + } else if (info->write_delay && write_op) { + data->write_time = ktime_get(); + } +} + int pmbus_set_page(struct i2c_client *client, int page, int phase) { struct pmbus_data *data = i2c_get_clientdata(client); @@ -170,11 +206,15 @@ int pmbus_set_page(struct i2c_client *client, int page, int phase) if (!(data->info->func[page] & PMBUS_PAGE_VIRTUAL) && data->info->pages > 1 && page != data->currpage) { + pmbus_wait(client); rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); + pmbus_update_ts(client, true); if (rv < 0) return rv; + pmbus_wait(client); rv = i2c_smbus_read_byte_data(client, PMBUS_PAGE); + pmbus_update_ts(client, false); if (rv < 0) return rv; @@ -185,8 +225,10 @@ int pmbus_set_page(struct i2c_client *client, int page, int phase) if (data->info->phases[page] && data->currphase != phase && !(data->info->func[page] & PMBUS_PHASE_VIRTUAL)) { + pmbus_wait(client); rv = i2c_smbus_write_byte_data(client, PMBUS_PHASE, phase); + pmbus_update_ts(client, true); if (rv) return rv; } @@ -204,7 +246,11 @@ int pmbus_write_byte(struct i2c_client *client, int page, u8 value) if (rv < 0) return rv; - return i2c_smbus_write_byte(client, value); + pmbus_wait(client); + rv = i2c_smbus_write_byte(client, value); + pmbus_update_ts(client, true); + + return rv; } EXPORT_SYMBOL_NS_GPL(pmbus_write_byte, PMBUS); @@ -235,7 +281,11 @@ int pmbus_write_word_data(struct i2c_client *client, int page, u8 reg, if (rv < 0) return rv; - return i2c_smbus_write_word_data(client, reg, word); + pmbus_wait(client); + rv = i2c_smbus_write_word_data(client, reg, word); + pmbus_update_ts(client, true); + + return rv; } EXPORT_SYMBOL_NS_GPL(pmbus_write_word_data, PMBUS); @@ -353,7 +403,11 @@ int pmbus_read_word_data(struct i2c_client *client, int page, int phase, u8 reg) if (rv < 0) return rv; - return i2c_smbus_read_word_data(client, reg); + pmbus_wait(client); + rv = i2c_smbus_read_word_data(client, reg); + pmbus_update_ts(client, false); + + return rv; } EXPORT_SYMBOL_NS_GPL(pmbus_read_word_data, PMBUS); @@ -412,7 +466,11 @@ int pmbus_read_byte_data(struct i2c_client *client, int page, u8 reg) if (rv < 0) return rv; - return i2c_smbus_read_byte_data(client, reg); + pmbus_wait(client); + rv = i2c_smbus_read_byte_data(client, reg); + pmbus_update_ts(client, false); + + return rv; } EXPORT_SYMBOL_NS_GPL(pmbus_read_byte_data, PMBUS); @@ -424,7 +482,11 @@ int pmbus_write_byte_data(struct i2c_client *client, int page, u8 reg, u8 value) if (rv < 0) return rv; - return i2c_smbus_write_byte_data(client, reg, value); + pmbus_wait(client); + rv = i2c_smbus_write_byte_data(client, reg, value); + pmbus_update_ts(client, true); + + return rv; } EXPORT_SYMBOL_NS_GPL(pmbus_write_byte_data, PMBUS); @@ -456,7 +518,11 @@ static int pmbus_read_block_data(struct i2c_client *client, int page, u8 reg, if (rv < 0) return rv; - return i2c_smbus_read_block_data(client, reg, data_buf); + pmbus_wait(client); + rv = i2c_smbus_read_block_data(client, reg, data_buf); + pmbus_update_ts(client, false); + + return rv; } static struct pmbus_sensor *pmbus_find_sensor(struct pmbus_data *data, int page, @@ -2457,9 +2523,11 @@ static int pmbus_read_coefficients(struct i2c_client *client, data.block[1] = attr->reg; data.block[2] = 0x01; + pmbus_wait(client); rv = i2c_smbus_xfer(client->adapter, client->addr, client->flags, I2C_SMBUS_WRITE, PMBUS_COEFFICIENTS, I2C_SMBUS_BLOCK_PROC_CALL, &data); + pmbus_update_ts(client, true); if (rv < 0) return rv; @@ -2611,7 +2679,10 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, /* Enable PEC if the controller and bus supports it */ if (!(data->flags & PMBUS_NO_CAPABILITY)) { + pmbus_wait(client); ret = i2c_smbus_read_byte_data(client, PMBUS_CAPABILITY); + pmbus_update_ts(client, false); + if (ret >= 0 && (ret & PB_CAPABILITY_ERROR_CHECK)) { if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_PEC)) client->flags |= I2C_CLIENT_PEC; @@ -2624,10 +2695,16 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, * Bail out if both registers are not supported. */ data->read_status = pmbus_read_status_word; + pmbus_wait(client); ret = i2c_smbus_read_word_data(client, PMBUS_STATUS_WORD); + pmbus_update_ts(client, false); + if (ret < 0 || ret == 0xffff) { data->read_status = pmbus_read_status_byte; + pmbus_wait(client); ret = i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE); + pmbus_update_ts(client, false); + if (ret < 0 || ret == 0xff) { dev_err(dev, "PMBus status register not found\n"); return -ENODEV; @@ -2642,7 +2719,10 @@ static int pmbus_init_common(struct i2c_client *client, struct pmbus_data *data, * limit registers need to be disabled. */ if (!(data->flags & PMBUS_NO_WRITE_PROTECT)) { + pmbus_wait(client); ret = i2c_smbus_read_byte_data(client, PMBUS_WRITE_PROTECT); + pmbus_update_ts(client, false); + if (ret > 0 && (ret & PB_WP_ANY)) data->flags |= PMBUS_WRITE_PROTECTED | PMBUS_SKIP_STATUS_CHECK; } diff --git a/drivers/hwmon/pmbus/ucd9000.c b/drivers/hwmon/pmbus/ucd9000.c index d817c71..5d3d177 100644 --- a/drivers/hwmon/pmbus/ucd9000.c +++ b/drivers/hwmon/pmbus/ucd9000.c @@ -67,7 +67,6 @@ struct ucd9000_data { struct gpio_chip gpio; #endif struct dentry *debugfs; - ktime_t write_time; }; #define to_ucd9000_data(_info) container_of(_info, struct ucd9000_data, info) @@ -86,63 +85,6 @@ struct ucd9000_debugfs_entry { */ #define UCD90320_WAIT_DELAY_US 500 -static inline void ucd90320_wait(const struct ucd9000_data *data) -{ - s64 delta = ktime_us_delta(ktime_get(), data->write_time); - - if (delta < UCD90320_WAIT_DELAY_US) - udelay(UCD90320_WAIT_DELAY_US - delta); -} - -static int ucd90320_read_word_data(struct i2c_client *client, int page, - int phase, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct ucd9000_data *data = to_ucd9000_data(info); - - if (reg >= PMBUS_VIRT_BASE) - return -ENXIO; - - ucd90320_wait(data); - return pmbus_read_word_data(client, page, phase, reg); -} - -static int ucd90320_read_byte_data(struct i2c_client *client, int page, int reg) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct ucd9000_data *data = to_ucd9000_data(info); - - ucd90320_wait(data); - return pmbus_read_byte_data(client, page, reg); -} - -static int ucd90320_write_word_data(struct i2c_client *client, int page, - int reg, u16 word) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct ucd9000_data *data = to_ucd9000_data(info); - int ret; - - ucd90320_wait(data); - ret = pmbus_write_word_data(client, page, reg, word); - data->write_time = ktime_get(); - - return ret; -} - -static int ucd90320_write_byte(struct i2c_client *client, int page, u8 value) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct ucd9000_data *data = to_ucd9000_data(info); - int ret; - - ucd90320_wait(data); - ret = pmbus_write_byte(client, page, value); - data->write_time = ktime_get(); - - return ret; -} - static int ucd9000_get_fan_config(struct i2c_client *client, int fan) { int fan_config = 0; @@ -667,10 +609,8 @@ static int ucd9000_probe(struct i2c_client *client) info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12 | PMBUS_HAVE_FAN34 | PMBUS_HAVE_STATUS_FAN34; } else if (mid->driver_data == ucd90320) { - info->read_byte_data = ucd90320_read_byte_data; - info->read_word_data = ucd90320_read_word_data; - info->write_byte = ucd90320_write_byte; - info->write_word_data = ucd90320_write_word_data; + /* Delay SMBus operations after a write */ + info->write_delay = UCD90320_WAIT_DELAY_US; } ucd9000_probe_gpio(client, mid, data); diff --git a/drivers/hwmon/pmbus/zl6100.c b/drivers/hwmon/pmbus/zl6100.c index 83458df..7920a16 100644 --- a/drivers/hwmon/pmbus/zl6100.c +++ b/drivers/hwmon/pmbus/zl6100.c @@ -22,8 +22,6 @@ enum chips { zl2004, zl2005, zl2006, zl2008, zl2105, zl2106, zl6100, zl6105, struct zl6100_data { int id; - ktime_t access; /* chip access time */ - int delay; /* Delay between chip accesses in uS */ struct pmbus_driver_info info; }; @@ -122,16 +120,6 @@ static u16 zl6100_d2l(long val) return (mantissa & 0x7ff) | ((exponent << 11) & 0xf800); } -/* Some chips need a delay between accesses */ -static inline void zl6100_wait(const struct zl6100_data *data) -{ - if (data->delay) { - s64 delta = ktime_us_delta(ktime_get(), data->access); - if (delta < data->delay) - udelay(data->delay - delta); - } -} - static int zl6100_read_word_data(struct i2c_client *client, int page, int phase, int reg) { @@ -174,9 +162,7 @@ static int zl6100_read_word_data(struct i2c_client *client, int page, break; } - zl6100_wait(data); ret = pmbus_read_word_data(client, page, phase, vreg); - data->access = ktime_get(); if (ret < 0) return ret; @@ -195,14 +181,11 @@ static int zl6100_read_word_data(struct i2c_client *client, int page, static int zl6100_read_byte_data(struct i2c_client *client, int page, int reg) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); int ret, status; if (page >= info->pages) return -ENXIO; - zl6100_wait(data); - switch (reg) { case PMBUS_VIRT_STATUS_VMON: ret = pmbus_read_byte_data(client, 0, @@ -225,7 +208,6 @@ static int zl6100_read_byte_data(struct i2c_client *client, int page, int reg) ret = pmbus_read_byte_data(client, page, reg); break; } - data->access = ktime_get(); return ret; } @@ -234,8 +216,7 @@ static int zl6100_write_word_data(struct i2c_client *client, int page, int reg, u16 word) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret, vreg; + int vreg; if (page >= info->pages) return -ENXIO; @@ -265,27 +246,7 @@ static int zl6100_write_word_data(struct i2c_client *client, int page, int reg, vreg = reg; } - zl6100_wait(data); - ret = pmbus_write_word_data(client, page, vreg, word); - data->access = ktime_get(); - - return ret; -} - -static int zl6100_write_byte(struct i2c_client *client, int page, u8 value) -{ - const struct pmbus_driver_info *info = pmbus_get_driver_info(client); - struct zl6100_data *data = to_zl6100_data(info); - int ret; - - if (page >= info->pages) - return -ENXIO; - - zl6100_wait(data); - ret = pmbus_write_byte(client, page, value); - data->access = ktime_get(); - - return ret; + return pmbus_write_word_data(client, page, vreg, word); } static const struct i2c_device_id zl6100_id[] = { @@ -363,14 +324,7 @@ static int zl6100_probe(struct i2c_client *client) * supported chips are known to require a wait time between I2C * accesses. */ - data->delay = delay; - - /* - * Since there was a direct I2C device access above, wait before - * accessing the chip again. - */ - data->access = ktime_get(); - zl6100_wait(data); + udelay(delay); info = &data->info; @@ -404,8 +358,7 @@ static int zl6100_probe(struct i2c_client *client) if (ret < 0) return ret; - data->access = ktime_get(); - zl6100_wait(data); + udelay(delay); if (ret & ZL8802_MFR_PHASES_MASK) info->func[1] |= PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT; @@ -418,8 +371,7 @@ static int zl6100_probe(struct i2c_client *client) if (ret < 0) return ret; - data->access = ktime_get(); - zl6100_wait(data); + udelay(delay); ret = i2c_smbus_read_word_data(client, ZL8802_MFR_USER_CONFIG); if (ret < 0) @@ -428,8 +380,7 @@ static int zl6100_probe(struct i2c_client *client) if (ret & ZL8802_MFR_XTEMP_ENABLE_2) info->func[i] |= PMBUS_HAVE_TEMP2; - data->access = ktime_get(); - zl6100_wait(data); + udelay(delay); } ret = i2c_smbus_read_word_data(client, ZL8802_MFR_USER_GLOBAL_CONFIG); if (ret < 0) @@ -446,13 +397,12 @@ static int zl6100_probe(struct i2c_client *client) info->func[0] |= PMBUS_HAVE_TEMP2; } - data->access = ktime_get(); - zl6100_wait(data); + udelay(delay); + info->access_delay = delay; info->read_word_data = zl6100_read_word_data; info->read_byte_data = zl6100_read_byte_data; info->write_word_data = zl6100_write_word_data; - info->write_byte = zl6100_write_byte; return pmbus_do_probe(client, info); } diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c index a171264..c434db4 100644 --- a/drivers/hwmon/pwm-fan.c +++ b/drivers/hwmon/pwm-fan.c @@ -167,7 +167,7 @@ disable_regulator: return ret; } -static int pwm_fan_power_off(struct pwm_fan_ctx *ctx) +static int pwm_fan_power_off(struct pwm_fan_ctx *ctx, bool force_disable) { struct pwm_state *state = &ctx->pwm_state; bool enable_regulator = false; @@ -180,7 +180,8 @@ static int pwm_fan_power_off(struct pwm_fan_ctx *ctx) state, &enable_regulator); - state->enabled = false; + if (force_disable) + state->enabled = false; state->duty_cycle = 0; ret = pwm_apply_might_sleep(ctx->pwm, state); if (ret) { @@ -213,7 +214,7 @@ static int __set_pwm(struct pwm_fan_ctx *ctx, unsigned long pwm) return ret; ret = pwm_fan_power_on(ctx); } else { - ret = pwm_fan_power_off(ctx); + ret = pwm_fan_power_off(ctx, false); } if (!ret) ctx->pwm_value = pwm; @@ -468,7 +469,7 @@ static void pwm_fan_cleanup(void *__ctx) del_timer_sync(&ctx->rpm_timer); /* Switch off everything */ ctx->enable_mode = pwm_disable_reg_disable; - pwm_fan_power_off(ctx); + pwm_fan_power_off(ctx, true); } static int pwm_fan_probe(struct platform_device *pdev) @@ -661,7 +662,7 @@ static int pwm_fan_suspend(struct device *dev) { struct pwm_fan_ctx *ctx = dev_get_drvdata(dev); - return pwm_fan_power_off(ctx); + return pwm_fan_power_off(ctx, true); } static int pwm_fan_resume(struct device *dev) diff --git a/drivers/hwmon/sch5636.c b/drivers/hwmon/sch5636.c index 6e6d541..a4b05eb 100644 --- a/drivers/hwmon/sch5636.c +++ b/drivers/hwmon/sch5636.c @@ -416,8 +416,7 @@ static int sch5636_probe(struct platform_device *pdev) id[i] = '\0'; if (strcmp(id, "THS")) { - pr_err("Unknown Fujitsu id: %02x%02x%02x\n", - id[0], id[1], id[2]); + pr_err("Unknown Fujitsu id: %3pE (%3ph)\n", id, id); err = -ENODEV; goto error; } diff --git a/drivers/hwmon/sch56xx-common.h b/drivers/hwmon/sch56xx-common.h index 7479a54..601987c 100644 --- a/drivers/hwmon/sch56xx-common.h +++ b/drivers/hwmon/sch56xx-common.h @@ -22,4 +22,3 @@ int sch56xx_read_virtual_reg12(u16 addr, u16 msb_reg, u16 lsn_reg, void sch56xx_watchdog_register(struct device *parent, u16 addr, u32 revision, struct mutex *io_lock, int check_enabled); -void sch56xx_watchdog_unregister(struct sch56xx_watchdog_data *data); diff --git a/drivers/hwmon/sg2042-mcu.c b/drivers/hwmon/sg2042-mcu.c new file mode 100644 index 0000000..1410457 --- /dev/null +++ b/drivers/hwmon/sg2042-mcu.c @@ -0,0 +1,388 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2024 Inochi Amaoto + * + * Sophgo power control mcu for SG2042 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* fixed MCU registers */ +#define REG_BOARD_TYPE 0x00 +#define REG_MCU_FIRMWARE_VERSION 0x01 +#define REG_PCB_VERSION 0x02 +#define REG_PWR_CTRL 0x03 +#define REG_SOC_TEMP 0x04 +#define REG_BOARD_TEMP 0x05 +#define REG_RST_COUNT 0x0a +#define REG_UPTIME 0x0b +#define REG_RESET_REASON 0x0d +#define REG_MCU_TYPE 0x18 +#define REG_REPOWER_POLICY 0x65 +#define REG_CRITICAL_TEMP 0x66 +#define REG_REPOWER_TEMP 0x67 + +#define REPOWER_POLICY_REBOOT 1 +#define REPOWER_POLICY_KEEP_OFF 2 + +#define MCU_POWER_MAX 0xff + +#define DEFINE_MCU_DEBUG_ATTR(_name, _reg, _format) \ + static int _name##_show(struct seq_file *seqf, \ + void *unused) \ + { \ + struct sg2042_mcu_data *mcu = seqf->private; \ + int ret; \ + ret = i2c_smbus_read_byte_data(mcu->client, (_reg)); \ + if (ret < 0) \ + return ret; \ + seq_printf(seqf, _format "\n", ret); \ + return 0; \ + } \ + DEFINE_SHOW_ATTRIBUTE(_name) \ + +struct sg2042_mcu_data { + struct i2c_client *client; + struct dentry *debugfs; + struct mutex mutex; +}; + +static struct dentry *sgmcu_debugfs; + +static ssize_t reset_count_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + int ret; + + ret = i2c_smbus_read_byte_data(mcu->client, REG_RST_COUNT); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", ret); +} + +static ssize_t uptime_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + u8 time_val[2]; + int ret; + + ret = i2c_smbus_read_i2c_block_data(mcu->client, REG_UPTIME, + sizeof(time_val), time_val); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", + (time_val[0]) | (time_val[1] << 8)); +} + +static ssize_t reset_reason_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + int ret; + + ret = i2c_smbus_read_byte_data(mcu->client, REG_RESET_REASON); + if (ret < 0) + return ret; + + return sprintf(buf, "0x%02x\n", ret); +} + +static ssize_t repower_policy_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + int ret; + const char *action; + + ret = i2c_smbus_read_byte_data(mcu->client, REG_REPOWER_POLICY); + if (ret < 0) + return ret; + + if (ret == REPOWER_POLICY_REBOOT) + action = "repower"; + else if (ret == REPOWER_POLICY_KEEP_OFF) + action = "keep"; + else + action = "unknown"; + + return sprintf(buf, "%s\n", action); +} + +static ssize_t repower_policy_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + u8 value; + int ret; + + if (sysfs_streq("repower", buf)) + value = REPOWER_POLICY_REBOOT; + else if (sysfs_streq("keep", buf)) + value = REPOWER_POLICY_KEEP_OFF; + else + return -EINVAL; + + ret = i2c_smbus_write_byte_data(mcu->client, + REG_REPOWER_POLICY, value); + if (ret < 0) + return ret; + + return count; +} + +static DEVICE_ATTR_RO(reset_count); +static DEVICE_ATTR_RO(uptime); +static DEVICE_ATTR_RO(reset_reason); +static DEVICE_ATTR_RW(repower_policy); + +DEFINE_MCU_DEBUG_ATTR(firmware_version, REG_MCU_FIRMWARE_VERSION, "0x%02x"); +DEFINE_MCU_DEBUG_ATTR(pcb_version, REG_PCB_VERSION, "0x%02x"); +DEFINE_MCU_DEBUG_ATTR(board_type, REG_BOARD_TYPE, "0x%02x"); +DEFINE_MCU_DEBUG_ATTR(mcu_type, REG_MCU_TYPE, "%d"); + +static struct attribute *sg2042_mcu_attrs[] = { + &dev_attr_reset_count.attr, + &dev_attr_uptime.attr, + &dev_attr_reset_reason.attr, + &dev_attr_repower_policy.attr, + NULL +}; + +static const struct attribute_group sg2042_mcu_attr_group = { + .attrs = sg2042_mcu_attrs, +}; + +static const struct attribute_group *sg2042_mcu_groups[] = { + &sg2042_mcu_attr_group, + NULL +}; + +static const struct hwmon_channel_info * const sg2042_mcu_info[] = { + HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_CRIT | + HWMON_T_CRIT_HYST, + HWMON_T_INPUT), + NULL +}; + +static int sg2042_mcu_read(struct device *dev, + enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + int tmp; + u8 reg; + + switch (attr) { + case hwmon_temp_input: + reg = channel ? REG_BOARD_TEMP : REG_SOC_TEMP; + break; + case hwmon_temp_crit: + reg = REG_CRITICAL_TEMP; + break; + case hwmon_temp_crit_hyst: + reg = REG_REPOWER_TEMP; + break; + default: + return -EOPNOTSUPP; + } + + tmp = i2c_smbus_read_byte_data(mcu->client, reg); + if (tmp < 0) + return tmp; + *val = tmp * 1000; + + return 0; +} + +static int sg2042_mcu_write(struct device *dev, + enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + struct sg2042_mcu_data *mcu = dev_get_drvdata(dev); + int temp = val / 1000; + int hyst_temp, crit_temp; + u8 reg; + + temp = clamp_val(temp, 0, MCU_POWER_MAX); + + guard(mutex)(&mcu->mutex); + + switch (attr) { + case hwmon_temp_crit: + hyst_temp = i2c_smbus_read_byte_data(mcu->client, + REG_REPOWER_TEMP); + if (hyst_temp < 0) + return hyst_temp; + + crit_temp = temp; + reg = REG_CRITICAL_TEMP; + break; + case hwmon_temp_crit_hyst: + crit_temp = i2c_smbus_read_byte_data(mcu->client, + REG_CRITICAL_TEMP); + if (crit_temp < 0) + return crit_temp; + + hyst_temp = temp; + reg = REG_REPOWER_TEMP; + break; + default: + return -EOPNOTSUPP; + } + + /* + * ensure hyst_temp is smaller to avoid MCU from + * keeping triggering repower event. + */ + if (crit_temp < hyst_temp) + return -EINVAL; + + return i2c_smbus_write_byte_data(mcu->client, reg, temp); +} + +static umode_t sg2042_mcu_is_visible(const void *_data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + return 0444; + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + if (channel == 0) + return 0644; + break; + default: + break; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_ops sg2042_mcu_ops = { + .is_visible = sg2042_mcu_is_visible, + .read = sg2042_mcu_read, + .write = sg2042_mcu_write, +}; + +static const struct hwmon_chip_info sg2042_mcu_chip_info = { + .ops = &sg2042_mcu_ops, + .info = sg2042_mcu_info, +}; + +static void sg2042_mcu_debugfs_init(struct sg2042_mcu_data *mcu, + struct device *dev) +{ + mcu->debugfs = debugfs_create_dir(dev_name(dev), sgmcu_debugfs); + + debugfs_create_file("firmware_version", 0444, mcu->debugfs, + mcu, &firmware_version_fops); + debugfs_create_file("pcb_version", 0444, mcu->debugfs, mcu, + &pcb_version_fops); + debugfs_create_file("mcu_type", 0444, mcu->debugfs, mcu, + &mcu_type_fops); + debugfs_create_file("board_type", 0444, mcu->debugfs, mcu, + &board_type_fops); +} + +static int sg2042_mcu_i2c_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct sg2042_mcu_data *mcu; + struct device *hwmon_dev; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA | + I2C_FUNC_SMBUS_BLOCK_DATA)) + return -ENODEV; + + mcu = devm_kmalloc(dev, sizeof(*mcu), GFP_KERNEL); + if (!mcu) + return -ENOMEM; + + mutex_init(&mcu->mutex); + mcu->client = client; + + i2c_set_clientdata(client, mcu); + + hwmon_dev = devm_hwmon_device_register_with_info(dev, "sg2042_mcu", + mcu, + &sg2042_mcu_chip_info, + NULL); + if (IS_ERR(hwmon_dev)) + return PTR_ERR(hwmon_dev); + + sg2042_mcu_debugfs_init(mcu, dev); + + return 0; +} + +static void sg2042_mcu_i2c_remove(struct i2c_client *client) +{ + struct sg2042_mcu_data *mcu = i2c_get_clientdata(client); + + debugfs_remove_recursive(mcu->debugfs); +} + +static const struct i2c_device_id sg2042_mcu_id[] = { + { "sg2042-hwmon-mcu", 0 }, + {}, +}; +MODULE_DEVICE_TABLE(i2c, sg2042_mcu_id); + +static const struct of_device_id sg2042_mcu_of_id[] = { + { .compatible = "sophgo,sg2042-hwmon-mcu" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sg2042_mcu_of_id); + +static struct i2c_driver sg2042_mcu_driver = { + .driver = { + .name = "sg2042-mcu", + .of_match_table = sg2042_mcu_of_id, + .dev_groups = sg2042_mcu_groups, + }, + .probe = sg2042_mcu_i2c_probe, + .remove = sg2042_mcu_i2c_remove, + .id_table = sg2042_mcu_id, +}; + +static int __init sg2042_mcu_init(void) +{ + sgmcu_debugfs = debugfs_create_dir("sg2042-mcu", NULL); + return i2c_add_driver(&sg2042_mcu_driver); +} + +static void __exit sg2042_mcu_exit(void) +{ + debugfs_remove_recursive(sgmcu_debugfs); + i2c_del_driver(&sg2042_mcu_driver); +} + +module_init(sg2042_mcu_init); +module_exit(sg2042_mcu_exit); + +MODULE_AUTHOR("Inochi Amaoto "); +MODULE_DESCRIPTION("MCU I2C driver for SG2042 soc platform"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/sht21.c b/drivers/hwmon/sht21.c index ad1b827..9732731 100644 --- a/drivers/hwmon/sht21.c +++ b/drivers/hwmon/sht21.c @@ -199,10 +199,7 @@ static ssize_t eic_read(struct sht21 *sht21) eic[6] = rx[0]; eic[7] = rx[1]; - ret = snprintf(sht21->eic, sizeof(sht21->eic), - "%02x%02x%02x%02x%02x%02x%02x%02x\n", - eic[0], eic[1], eic[2], eic[3], - eic[4], eic[5], eic[6], eic[7]); + ret = snprintf(sht21->eic, sizeof(sht21->eic), "%8phN\n", eic); out: if (ret < 0) sht21->eic[0] = 0; diff --git a/drivers/hwmon/stts751.c b/drivers/hwmon/stts751.c index e763208..f9e8b28 100644 --- a/drivers/hwmon/stts751.c +++ b/drivers/hwmon/stts751.c @@ -77,7 +77,7 @@ static const struct i2c_device_id stts751_id[] = { }; static const struct of_device_id __maybe_unused stts751_of_match[] = { - { .compatible = "stts751" }, + { .compatible = "st,stts751" }, { }, }; MODULE_DEVICE_TABLE(of, stts751_of_match); diff --git a/drivers/hwmon/surface_temp.c b/drivers/hwmon/surface_temp.c new file mode 100644 index 0000000..cd21f33 --- /dev/null +++ b/drivers/hwmon/surface_temp.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Thermal sensor subsystem driver for Surface System Aggregator Module (SSAM). + * + * Copyright (C) 2022-2023 Maximilian Luz + */ + +#include +#include +#include +#include +#include + +#include +#include + +/* -- SAM interface. -------------------------------------------------------- */ + +/* + * Available sensors are indicated by a 16-bit bitfield, where a 1 marks the + * presence of a sensor. So we have at most 16 possible sensors/channels. + */ +#define SSAM_TMP_SENSOR_MAX_COUNT 16 + +/* + * All names observed so far are 6 characters long, but there's only + * zeros after the name, so perhaps they can be longer. This number reflects + * the maximum zero-padded space observed in the returned buffer. + */ +#define SSAM_TMP_SENSOR_NAME_LENGTH 18 + +struct ssam_tmp_get_name_rsp { + __le16 unknown1; + char unknown2; + char name[SSAM_TMP_SENSOR_NAME_LENGTH]; +} __packed; + +static_assert(sizeof(struct ssam_tmp_get_name_rsp) == 21); + +SSAM_DEFINE_SYNC_REQUEST_CL_R(__ssam_tmp_get_available_sensors, __le16, { + .target_category = SSAM_SSH_TC_TMP, + .command_id = 0x04, +}); + +SSAM_DEFINE_SYNC_REQUEST_MD_R(__ssam_tmp_get_temperature, __le16, { + .target_category = SSAM_SSH_TC_TMP, + .command_id = 0x01, +}); + +SSAM_DEFINE_SYNC_REQUEST_MD_R(__ssam_tmp_get_name, struct ssam_tmp_get_name_rsp, { + .target_category = SSAM_SSH_TC_TMP, + .command_id = 0x0e, +}); + +static int ssam_tmp_get_available_sensors(struct ssam_device *sdev, s16 *sensors) +{ + __le16 sensors_le; + int status; + + status = __ssam_tmp_get_available_sensors(sdev, &sensors_le); + if (status) + return status; + + *sensors = le16_to_cpu(sensors_le); + return 0; +} + +static int ssam_tmp_get_temperature(struct ssam_device *sdev, u8 iid, long *temperature) +{ + __le16 temp_le; + int status; + + status = __ssam_tmp_get_temperature(sdev->ctrl, sdev->uid.target, iid, &temp_le); + if (status) + return status; + + /* Convert 1/10 °K to 1/1000 °C */ + *temperature = (le16_to_cpu(temp_le) - 2731) * 100L; + return 0; +} + +static int ssam_tmp_get_name(struct ssam_device *sdev, u8 iid, char *buf, size_t buf_len) +{ + struct ssam_tmp_get_name_rsp name_rsp; + int status; + + status = __ssam_tmp_get_name(sdev->ctrl, sdev->uid.target, iid, &name_rsp); + if (status) + return status; + + /* + * This should not fail unless the name in the returned struct is not + * null-terminated or someone changed something in the struct + * definitions above, since our buffer and struct have the same + * capacity by design. So if this fails, log an error message. Since + * the more likely cause is that the returned string isn't + * null-terminated, we might have received garbage (as opposed to just + * an incomplete string), so also fail the function. + */ + status = strscpy(buf, name_rsp.name, buf_len); + if (status < 0) { + dev_err(&sdev->dev, "received non-null-terminated sensor name string\n"); + return status; + } + + return 0; +} + +/* -- Driver.---------------------------------------------------------------- */ + +struct ssam_temp { + struct ssam_device *sdev; + s16 sensors; + char names[SSAM_TMP_SENSOR_MAX_COUNT][SSAM_TMP_SENSOR_NAME_LENGTH]; +}; + +static umode_t ssam_temp_hwmon_is_visible(const void *data, + enum hwmon_sensor_types type, + u32 attr, int channel) +{ + const struct ssam_temp *ssam_temp = data; + + if (!(ssam_temp->sensors & BIT(channel))) + return 0; + + return 0444; +} + +static int ssam_temp_hwmon_read(struct device *dev, + enum hwmon_sensor_types type, + u32 attr, int channel, long *value) +{ + const struct ssam_temp *ssam_temp = dev_get_drvdata(dev); + + return ssam_tmp_get_temperature(ssam_temp->sdev, channel + 1, value); +} + +static int ssam_temp_hwmon_read_string(struct device *dev, + enum hwmon_sensor_types type, + u32 attr, int channel, const char **str) +{ + const struct ssam_temp *ssam_temp = dev_get_drvdata(dev); + + *str = ssam_temp->names[channel]; + return 0; +} + +static const struct hwmon_channel_info * const ssam_temp_hwmon_info[] = { + HWMON_CHANNEL_INFO(chip, + HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL, + HWMON_T_INPUT | HWMON_T_LABEL), + NULL +}; + +static const struct hwmon_ops ssam_temp_hwmon_ops = { + .is_visible = ssam_temp_hwmon_is_visible, + .read = ssam_temp_hwmon_read, + .read_string = ssam_temp_hwmon_read_string, +}; + +static const struct hwmon_chip_info ssam_temp_hwmon_chip_info = { + .ops = &ssam_temp_hwmon_ops, + .info = ssam_temp_hwmon_info, +}; + +static int ssam_temp_probe(struct ssam_device *sdev) +{ + struct ssam_temp *ssam_temp; + struct device *hwmon_dev; + s16 sensors; + int channel; + int status; + + status = ssam_tmp_get_available_sensors(sdev, &sensors); + if (status) + return status; + + ssam_temp = devm_kzalloc(&sdev->dev, sizeof(*ssam_temp), GFP_KERNEL); + if (!ssam_temp) + return -ENOMEM; + + ssam_temp->sdev = sdev; + ssam_temp->sensors = sensors; + + /* Retrieve the name for each available sensor. */ + for (channel = 0; channel < SSAM_TMP_SENSOR_MAX_COUNT; channel++) { + if (!(sensors & BIT(channel))) + continue; + + status = ssam_tmp_get_name(sdev, channel + 1, ssam_temp->names[channel], + SSAM_TMP_SENSOR_NAME_LENGTH); + if (status) + return status; + } + + hwmon_dev = devm_hwmon_device_register_with_info(&sdev->dev, "surface_thermal", ssam_temp, + &ssam_temp_hwmon_chip_info, NULL); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct ssam_device_id ssam_temp_match[] = { + { SSAM_SDEV(TMP, SAM, 0x00, 0x02) }, + { }, +}; +MODULE_DEVICE_TABLE(ssam, ssam_temp_match); + +static struct ssam_device_driver ssam_temp = { + .probe = ssam_temp_probe, + .match_table = ssam_temp_match, + .driver = { + .name = "surface_temp", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, + }, +}; +module_ssam_device_driver(ssam_temp); + +MODULE_AUTHOR("Maximilian Luz "); +MODULE_DESCRIPTION("Thermal sensor subsystem driver for Surface System Aggregator Module"); +MODULE_LICENSE("GPL"); diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c index 853dbe7..02c5a3b 100644 --- a/drivers/hwmon/tmp401.c +++ b/drivers/hwmon/tmp401.c @@ -308,7 +308,9 @@ static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val { struct tmp401_data *data = dev_get_drvdata(dev); struct regmap *regmap = data->regmap; + unsigned int regs[2] = { TMP401_TEMP_MSB[3][channel], TMP401_TEMP_CRIT_HYST }; unsigned int regval; + u16 regvals[2]; int reg, ret; switch (attr) { @@ -325,20 +327,11 @@ static int tmp401_temp_read(struct device *dev, u32 attr, int channel, long *val *val = tmp401_register_to_temp(regval, data->extended_range); break; case hwmon_temp_crit_hyst: - mutex_lock(&data->update_lock); - reg = TMP401_TEMP_MSB[3][channel]; - ret = regmap_read(regmap, reg, ®val); - if (ret < 0) - goto unlock; - *val = tmp401_register_to_temp(regval, data->extended_range); - ret = regmap_read(regmap, TMP401_TEMP_CRIT_HYST, ®val); - if (ret < 0) - goto unlock; - *val -= regval * 1000; -unlock: - mutex_unlock(&data->update_lock); + ret = regmap_multi_reg_read(regmap, regs, regvals, 2); if (ret < 0) return ret; + *val = tmp401_register_to_temp(regvals[0], data->extended_range) - + (regvals[1] * 1000); break; case hwmon_temp_fault: case hwmon_temp_min_alarm: diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c index 7a6f953..9537727 100644 --- a/drivers/hwmon/tmp421.c +++ b/drivers/hwmon/tmp421.c @@ -410,18 +410,15 @@ static int tmp421_probe_from_dt(struct i2c_client *client, struct tmp421_data *d { struct device *dev = &client->dev; const struct device_node *np = dev->of_node; - struct device_node *child; int err; - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { if (strcmp(child->name, "channel")) continue; err = tmp421_probe_child_from_dt(client, child, data); - if (err) { - of_node_put(child); + if (err) return err; - } } return 0; diff --git a/drivers/hwmon/tmp464.c b/drivers/hwmon/tmp464.c index 3ee1137..0f629c6 100644 --- a/drivers/hwmon/tmp464.c +++ b/drivers/hwmon/tmp464.c @@ -147,11 +147,11 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val { struct tmp464_data *data = dev_get_drvdata(dev); struct regmap *regmap = data->regmap; - unsigned int regval, regval2; + unsigned int regs[2]; + unsigned int regval; + u16 regvals[2]; int err = 0; - mutex_lock(&data->update_lock); - switch (attr) { case hwmon_temp_max_alarm: err = regmap_read(regmap, TMP464_THERM_STATUS_REG, ®val); @@ -172,26 +172,27 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val * complete. That means we have to cache the value internally * for one measurement cycle and report the cached value. */ + mutex_lock(&data->update_lock); if (!data->valid || time_after(jiffies, data->last_updated + msecs_to_jiffies(data->update_interval))) { err = regmap_read(regmap, TMP464_REMOTE_OPEN_REG, ®val); if (err < 0) - break; + goto unlock; data->open_reg = regval; data->last_updated = jiffies; data->valid = true; } *val = !!(data->open_reg & BIT(channel + 7)); +unlock: + mutex_unlock(&data->update_lock); break; case hwmon_temp_max_hyst: - err = regmap_read(regmap, TMP464_THERM_LIMIT[channel], ®val); + regs[0] = TMP464_THERM_LIMIT[channel]; + regs[1] = TMP464_TEMP_HYST_REG; + err = regmap_multi_reg_read(regmap, regs, regvals, 2); if (err < 0) break; - err = regmap_read(regmap, TMP464_TEMP_HYST_REG, ®val2); - if (err < 0) - break; - regval -= regval2; - *val = temp_from_reg(regval); + *val = temp_from_reg(regvals[0] - regvals[1]); break; case hwmon_temp_max: err = regmap_read(regmap, TMP464_THERM_LIMIT[channel], ®val); @@ -200,14 +201,12 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val *val = temp_from_reg(regval); break; case hwmon_temp_crit_hyst: - err = regmap_read(regmap, TMP464_THERM2_LIMIT[channel], ®val); + regs[0] = TMP464_THERM2_LIMIT[channel]; + regs[1] = TMP464_TEMP_HYST_REG; + err = regmap_multi_reg_read(regmap, regs, regvals, 2); if (err < 0) break; - err = regmap_read(regmap, TMP464_TEMP_HYST_REG, ®val2); - if (err < 0) - break; - regval -= regval2; - *val = temp_from_reg(regval); + *val = temp_from_reg(regvals[0] - regvals[1]); break; case hwmon_temp_crit: err = regmap_read(regmap, TMP464_THERM2_LIMIT[channel], ®val); @@ -239,8 +238,6 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val break; } - mutex_unlock(&data->update_lock); - return err; } @@ -565,18 +562,15 @@ static int tmp464_probe_child_from_dt(struct device *dev, static int tmp464_probe_from_dt(struct device *dev, struct tmp464_data *data) { const struct device_node *np = dev->of_node; - struct device_node *child; int err; - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { if (strcmp(child->name, "channel")) continue; err = tmp464_probe_child_from_dt(dev, child, data); - if (err) { - of_node_put(child); + if (err) return err; - } } return 0; diff --git a/drivers/hwmon/vexpress-hwmon.c b/drivers/hwmon/vexpress-hwmon.c index d82a3b4..a2e350f 100644 --- a/drivers/hwmon/vexpress-hwmon.c +++ b/drivers/hwmon/vexpress-hwmon.c @@ -72,7 +72,7 @@ static umode_t vexpress_hwmon_attr_is_visible(struct kobject *kobj, struct device_attribute, attr); if (dev_attr->show == vexpress_hwmon_label_show && - !of_get_property(dev->of_node, "label", NULL)) + !of_property_present(dev->of_node, "label")) return 0; return attr->mode; diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h index e943147..5c6a421 100644 --- a/include/linux/hwmon.h +++ b/include/linux/hwmon.h @@ -481,7 +481,6 @@ devm_hwmon_device_register_with_info(struct device *dev, const struct attribute_group **extra_groups); void hwmon_device_unregister(struct device *dev); -void devm_hwmon_device_unregister(struct device *dev); int hwmon_notify_event(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel); diff --git a/include/linux/platform_data/max6697.h b/include/linux/platform_data/max6697.h deleted file mode 100644 index 6fbb700..0000000 --- a/include/linux/platform_data/max6697.h +++ /dev/null @@ -1,33 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * max6697.h - * Copyright (c) 2012 Guenter Roeck - */ - -#ifndef MAX6697_H -#define MAX6697_H - -#include - -/* - * For all bit masks: - * bit 0: local temperature - * bit 1..7: remote temperatures - */ -struct max6697_platform_data { - bool smbus_timeout_disable; /* set to disable SMBus timeouts */ - bool extended_range_enable; /* set to enable extended temp range */ - bool beta_compensation; /* set to enable beta compensation */ - u8 alert_mask; /* set bit to 1 to disable alert */ - u8 over_temperature_mask; /* set bit to 1 to disable */ - u8 resistance_cancellation; /* set bit to 0 to disable - * bit mask for MAX6581, - * boolean for other chips - */ - u8 ideality_mask; /* set bit to 0 to disable */ - u8 ideality_value; /* transistor ideality as per - * MAX6581 datasheet - */ -}; - -#endif /* MAX6697_H */