diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-29 11:20:45 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-01-29 11:20:45 -0800 |
commit | 47d5cc5be396eca67cc89572957ff16f10fd768e (patch) | |
tree | 1f7cc53be5c3d857a3a1724a8dd773997d20620b | |
parent | 0fc7e74663447682c904fe375bb680b004ddaa14 (diff) | |
parent | 6fbc4232a5ac944531bda397f3644d1cf66bdd13 (diff) |
Merge tag 'hwmon-for-linus-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
- New driver for W83773G
- Fan control support for PMBus drivers
- Improvements and minor fixes in several drivers
* tag 'hwmon-for-linus-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (32 commits)
hwmon: (dell-smm) Disable fan support for Dell Vostro 3360
hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720
hwmon: (dell-smm) Enable broken functionality via "force" module param
hwmon: (k10temp) Add temperature offset for Ryzen 1900X
hwmon: (lm75) Fix trailing semicolon
hwmon: (ina2xx) Fix access to uninitialized mutex
hwmon: (pmbus/ir35221) Remove unnecessary scaling
hwmon: (sht3x) wait predefined limits loading complete before access
hwmon: (pmbus/ibm-cffps) Add dependency on LEDS_CLASS
hwmon: (pmbus/cffps) Add led class device for power supply fault led
hwmon: (pmbus) cffps: Add PMBUS_SKIP_STATUS_CHECK
hwmon: (aspeed-pwm-tacho) Deassert reset in probe
dt-bindings: hwmon: aspeed-pwm-tacho: Add reset node
hwmon: (pmbus) cffps: Add debugfs entries
hwmon: (pmbus) Export pmbus device debugfs directory entry
hwmon: (w83773g) Fix fault detection and reporting
hwmon: (hih6130) Fix documentation of struct hih6130
hwmon: (iio_hwmon) Fix documentation of struct iio_hwmon_state
hwmon: (sht15) Fix parameter documentation of sht15_crc8()
hwmon: (sht21) Fix documentation of struct sht21
...
26 files changed, 1408 insertions, 382 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt b/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt index 367c8203213b..3ac02988a1a5 100644 --- a/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt +++ b/Documentation/devicetree/bindings/hwmon/aspeed-pwm-tacho.txt @@ -22,8 +22,9 @@ Required properties for pwm-tacho node: - compatible : should be "aspeed,ast2400-pwm-tacho" for AST2400 and "aspeed,ast2500-pwm-tacho" for AST2500. -- clocks : a fixed clock providing input clock frequency(PWM - and Fan Tach clock) +- clocks : phandle to clock provider with the clock number in the second cell + +- resets : phandle to reset controller with the reset number in the second cell fan subnode format: =================== @@ -48,19 +49,14 @@ Required properties for each child node: Examples: -pwm_tacho_fixed_clk: fixedclk { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <24000000>; -}; - pwm_tacho: pwmtachocontroller@1e786000 { #address-cells = <1>; #size-cells = <1>; #cooling-cells = <2>; reg = <0x1E786000 0x1000>; compatible = "aspeed,ast2500-pwm-tacho"; - clocks = <&pwm_tacho_fixed_clk>; + clocks = <&syscon ASPEED_CLK_APB>; + resets = <&syscon ASPEED_RESET_PWM>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default>; diff --git a/Documentation/hwmon/lm25066 b/Documentation/hwmon/lm25066 index 3fa6bf820c88..51b32aa203a8 100644 --- a/Documentation/hwmon/lm25066 +++ b/Documentation/hwmon/lm25066 @@ -8,11 +8,6 @@ Supported chips: Datasheets: http://www.ti.com/lit/gpn/lm25056 http://www.ti.com/lit/gpn/lm25056a - * TI LM25063 - Prefix: 'lm25063' - Addresses scanned: - - Datasheet: - To be announced * National Semiconductor LM25066 Prefix: 'lm25066' Addresses scanned: - @@ -42,7 +37,7 @@ Description ----------- This driver supports hardware monitoring for National Semiconductor / TI LM25056, -LM25063, LM25066, LM5064, and LM5066/LM5066I Power Management, Monitoring, +LM25066, LM5064, and LM5066/LM5066I Power Management, Monitoring, Control, and Protection ICs. The driver is a client driver to the core PMBus driver. Please see @@ -74,12 +69,8 @@ in1_input Measured input voltage. in1_average Average measured input voltage. in1_min Minimum input voltage. in1_max Maximum input voltage. -in1_crit Critical high input voltage (LM25063 only). -in1_lcrit Critical low input voltage (LM25063 only). in1_min_alarm Input voltage low alarm. in1_max_alarm Input voltage high alarm. -in1_lcrit_alarm Input voltage critical low alarm (LM25063 only). -in1_crit_alarm Input voltage critical high alarm. (LM25063 only). in2_label "vmon" in2_input Measured voltage on VAUX pin @@ -94,16 +85,12 @@ in3_input Measured output voltage. in3_average Average measured output voltage. in3_min Minimum output voltage. in3_min_alarm Output voltage low alarm. -in3_highest Historical minimum output voltage (LM25063 only). -in3_lowest Historical maximum output voltage (LM25063 only). curr1_label "iin" curr1_input Measured input current. curr1_average Average measured input current. curr1_max Maximum input current. -curr1_crit Critical input current (LM25063 only). curr1_max_alarm Input current high alarm. -curr1_crit_alarm Input current critical high alarm (LM25063 only). power1_label "pin" power1_input Measured input power. @@ -113,11 +100,6 @@ power1_alarm Input power alarm power1_input_highest Historical maximum power. power1_reset_history Write any value to reset maximum power history. -power2_label "pout". LM25063 only. -power2_input Measured output power. -power2_max Maximum output power limit. -power2_crit Critical output power limit. - temp1_input Measured temperature. temp1_max Maximum temperature. temp1_crit Critical high temperature. diff --git a/Documentation/hwmon/max31785 b/Documentation/hwmon/max31785 index 45fb6093dec2..270c5f865261 100644 --- a/Documentation/hwmon/max31785 +++ b/Documentation/hwmon/max31785 @@ -17,8 +17,9 @@ management with temperature and remote voltage sensing. Various fan control features are provided, including PWM frequency control, temperature hysteresis, dual tachometer measurements, and fan health monitoring. -For dual rotor fan configuration, the MAX31785 exposes the slowest rotor of the -two in the fan[1-4]_input attributes. +For dual-rotor configurations the MAX31785A exposes the second rotor tachometer +readings in attributes fan[5-8]_input. By contrast the MAX31785 only exposes +the slowest rotor measurement, and does so in the fan[1-4]_input attributes. Usage Notes ----------- @@ -31,7 +32,9 @@ Sysfs attributes fan[1-4]_alarm Fan alarm. fan[1-4]_fault Fan fault. -fan[1-4]_input Fan RPM. +fan[1-8]_input Fan RPM. On the MAX31785A, inputs 5-8 correspond to the + second rotor of fans 1-4 +fan[1-4]_target Fan input target in[1-6]_crit Critical maximum output voltage in[1-6]_crit_alarm Output voltage critical high alarm @@ -44,6 +47,12 @@ in[1-6]_max_alarm Output voltage high alarm in[1-6]_min Minimum output voltage in[1-6]_min_alarm Output voltage low alarm +pwm[1-4] Fan target duty cycle (0..255) +pwm[1-4]_enable 0: Full-speed + 1: Manual PWM control + 2: Automatic PWM (tach-feedback RPM fan-control) + 3: Automatic closed-loop (temp-feedback fan-control) + temp[1-11]_crit Critical high temperature temp[1-11]_crit_alarm Chip temperature critical high alarm temp[1-11]_input Measured temperature diff --git a/Documentation/hwmon/w83773g b/Documentation/hwmon/w83773g new file mode 100644 index 000000000000..4cc6c0b8257f --- /dev/null +++ b/Documentation/hwmon/w83773g @@ -0,0 +1,33 @@ +Kernel driver w83773g +==================== + +Supported chips: + * Nuvoton W83773G + Prefix: 'w83773g' + Addresses scanned: I2C 0x4c and 0x4d + Datasheet: https://www.nuvoton.com/resource-files/W83773G_SG_DatasheetV1_2.pdf + +Authors: + Lei YU <mine260309@gmail.com> + +Description +----------- + +This driver implements support for Nuvoton W83773G temperature sensor +chip. This chip implements one local and two remote sensors. +The chip also features offsets for the two remote sensors which get added to +the input readings. The chip does all the scaling by itself and the driver +therefore reports true temperatures that don't need any user-space adjustments. +Temperature is measured in degrees Celsius. +The chip is wired over I2C/SMBus and specified over a temperature +range of -40 to +125 degrees Celsius (for local sensor) and -40 to +127 +degrees Celsius (for remote sensors). +Resolution for both the local and remote channels is 0.125 degree C. + +The chip supports only temperature measurement. The driver exports +the temperature values via the following sysfs files: + +temp[1-3]_input +temp[2-3]_fault +temp[2-3]_offset +update_interval diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 7ad017690e3a..ef23553ff5cb 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -26,11 +26,9 @@ if HWMON config HWMON_VID tristate - default n config HWMON_DEBUG_CHIP bool "Hardware Monitoring Chip debugging messages" - default n help Say Y here if you want the I2C chip drivers to produce a bunch of debug messages to the system log. Select this if you are having @@ -42,7 +40,6 @@ comment "Native drivers" config SENSORS_AB8500 tristate "AB8500 thermal monitoring" depends on AB8500_GPADC && AB8500_BM - default n help If you say yes here you get support for the thermal sensor part of the AB8500 chip. The driver includes thermal management for @@ -302,7 +299,6 @@ config SENSORS_APPLESMC select NEW_LEDS select LEDS_CLASS select INPUT_POLLDEV - default n help This driver provides support for the Apple System Management Controller, which provides an accelerometer (Apple Sudden Motion @@ -678,7 +674,6 @@ config SENSORS_JC42 config SENSORS_POWR1220 tristate "Lattice POWR1220 Power Monitoring" depends on I2C - default n help If you say yes here you get access to the hardware monitoring functions of the Lattice POWR1220 isp Power Supply Monitoring, @@ -702,7 +697,6 @@ config SENSORS_LTC2945 tristate "Linear Technology LTC2945" depends on I2C select REGMAP_I2C - default n help If you say yes here you get support for Linear Technology LTC2945 I2C System Monitor. @@ -727,7 +721,6 @@ config SENSORS_LTC2990 config SENSORS_LTC4151 tristate "Linear Technology LTC4151" depends on I2C - default n help If you say yes here you get support for Linear Technology LTC4151 High Voltage I2C Current and Voltage Monitor interface. @@ -738,7 +731,6 @@ config SENSORS_LTC4151 config SENSORS_LTC4215 tristate "Linear Technology LTC4215" depends on I2C - default n help If you say yes here you get support for Linear Technology LTC4215 Hot Swap Controller I2C interface. @@ -750,7 +742,6 @@ config SENSORS_LTC4222 tristate "Linear Technology LTC4222" depends on I2C select REGMAP_I2C - default n help If you say yes here you get support for Linear Technology LTC4222 Dual Hot Swap Controller I2C interface. @@ -761,7 +752,6 @@ config SENSORS_LTC4222 config SENSORS_LTC4245 tristate "Linear Technology LTC4245" depends on I2C - default n help If you say yes here you get support for Linear Technology LTC4245 Multiple Supply Hot Swap Controller I2C interface. @@ -773,7 +763,6 @@ config SENSORS_LTC4260 tristate "Linear Technology LTC4260" depends on I2C select REGMAP_I2C - default n help If you say yes here you get support for Linear Technology LTC4260 Positive Voltage Hot Swap Controller I2C interface. @@ -784,7 +773,6 @@ config SENSORS_LTC4260 config SENSORS_LTC4261 tristate "Linear Technology LTC4261" depends on I2C - default n help If you say yes here you get support for Linear Technology LTC4261 Negative Voltage Hot Swap Controller I2C interface. @@ -1276,7 +1264,6 @@ config SENSORS_NSA320 config SENSORS_PCF8591 tristate "Philips PCF8591 ADC/DAC" depends on I2C - default n help If you say yes here you get support for Philips PCF8591 4-channel ADC, 1-channel DAC chips. @@ -1459,7 +1446,6 @@ config SENSORS_SMSC47B397 config SENSORS_SCH56XX_COMMON tristate - default n config SENSORS_SCH5627 tristate "SMSC SCH5627" @@ -1505,7 +1491,6 @@ config SENSORS_STTS751 config SENSORS_SMM665 tristate "Summit Microelectronics SMM665" depends on I2C - default n help If you say yes here you get support for the hardware monitoring features of the Summit Microelectronics SMM665/SMM665B Six-Channel @@ -1725,6 +1710,16 @@ config SENSORS_VT8231 This driver can also be built as a module. If so, the module will be called vt8231. +config SENSORS_W83773G + tristate "Nuvoton W83773G" + depends on I2C + help + If you say yes here you get support for the Nuvoton W83773G hardware + monitoring chip. + + This driver can also be built as a module. If so, the module + will be called w83773g. + config SENSORS_W83781D tristate "Winbond W83781D, W83782D, W83783S, Asus AS99127F" depends on I2C @@ -1782,7 +1777,6 @@ config SENSORS_W83795 config SENSORS_W83795_FANCTRL bool "Include automatic fan control support (DANGEROUS)" depends on SENSORS_W83795 - default n help If you say yes here, support for automatic fan speed control will be included in the driver. diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index 0fe489fab663..f814b4ace138 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_SENSORS_ATK0110) += asus_atk0110.o # asb100, then w83781d go first, as they can override other drivers' addresses. obj-$(CONFIG_SENSORS_ASB100) += asb100.o obj-$(CONFIG_SENSORS_W83627HF) += w83627hf.o +obj-$(CONFIG_SENSORS_W83773G) += w83773g.o obj-$(CONFIG_SENSORS_W83792D) += w83792d.o obj-$(CONFIG_SENSORS_W83793) += w83793.o obj-$(CONFIG_SENSORS_W83795) += w83795.o diff --git a/drivers/hwmon/aspeed-pwm-tacho.c b/drivers/hwmon/aspeed-pwm-tacho.c index 63a95e23ca81..693a3d53cab5 100644 --- a/drivers/hwmon/aspeed-pwm-tacho.c +++ b/drivers/hwmon/aspeed-pwm-tacho.c @@ -19,6 +19,7 @@ #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <linux/reset.h> #include <linux/sysfs.h> #include <linux/thermal.h> @@ -181,6 +182,7 @@ struct aspeed_cooling_device { struct aspeed_pwm_tacho_data { struct regmap *regmap; + struct reset_control *rst; unsigned long clk_freq; bool pwm_present[8]; bool fan_tach_present[16]; @@ -905,6 +907,13 @@ static int aspeed_create_fan(struct device *dev, return 0; } +static void aspeed_pwm_tacho_remove(void *data) +{ + struct aspeed_pwm_tacho_data *priv = data; + + reset_control_assert(priv->rst); +} + static int aspeed_pwm_tacho_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -931,6 +940,19 @@ static int aspeed_pwm_tacho_probe(struct platform_device *pdev) &aspeed_pwm_tacho_regmap_config); if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); + + priv->rst = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(priv->rst)) { + dev_err(dev, + "missing or invalid reset controller device tree entry"); + return PTR_ERR(priv->rst); + } + reset_control_deassert(priv->rst); + + ret = devm_add_action_or_reset(dev, aspeed_pwm_tacho_remove, priv); + if (ret) + return ret; + regmap_write(priv->regmap, ASPEED_PTCR_TACH_SOURCE, 0); regmap_write(priv->regmap, ASPEED_PTCR_TACH_SOURCE_EXT, 0); diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index c13a4fd86b3c..4bdbf77f7197 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -246,7 +246,8 @@ static int adjust_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev) int err; u32 eax, edx; int i; - struct pci_dev *host_bridge = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0)); + u16 devfn = PCI_DEVFN(0, 0); + struct pci_dev *host_bridge = pci_get_domain_bus_and_slot(0, 0, devfn); /* * Explicit tjmax table entries override heuristics. diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index c7c9e95e58a8..bf3bb7e1adab 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(®s) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(®s) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(®s) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1039,6 +1054,30 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst }; /* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { + .ident = "Dell Vostro 3360", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Vostro 3360"), + }, + }, + { } +}; + +/* * Probe for the presence of a supported laptop. */ static int __init i8k_probe(void) @@ -1060,8 +1099,17 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } - if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) - disallow_fan_type_call = true; + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan type call\n"); + if (!force) + disallow_fan_type_call = true; + } strlcpy(bios_version, i8k_get_dmi_data(DMI_BIOS_VERSION), sizeof(bios_version)); diff --git a/drivers/hwmon/hih6130.c b/drivers/hwmon/hih6130.c index 7b73d2002d3e..0ae1ee1dbf76 100644 --- a/drivers/hwmon/hih6130.c +++ b/drivers/hwmon/hih6130.c @@ -37,7 +37,7 @@ /** * struct hih6130 - HIH-6130 device specific data - * @hwmon_dev: device registered with hwmon + * @client: pointer to I2C client device * @lock: mutex to protect measurement values * @valid: only false before first measurement is taken * @last_update: time of last update (jiffies) diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index af5123042990..32083e452cde 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -678,7 +678,7 @@ EXPORT_SYMBOL_GPL(hwmon_device_register_with_groups); * @dev: the parent device * @name: hwmon name attribute * @drvdata: driver data to attach to created device - * @info: pointer to hwmon chip information + * @chip: pointer to hwmon chip information * @extra_groups: pointer to list of additional non-standard attribute groups * * hwmon_device_unregister() must be called when the device is no @@ -785,11 +785,11 @@ EXPORT_SYMBOL_GPL(devm_hwmon_device_register_with_groups); /** * devm_hwmon_device_register_with_info - register w/ hwmon - * @dev: the parent device - * @name: hwmon name attribute - * @drvdata: driver data to attach to created device - * @info: Pointer to hwmon chip information - * @groups - pointer to list of driver specific attribute groups + * @dev: the parent device + * @name: hwmon name attribute + * @drvdata: driver data to attach to created device + * @chip: pointer to hwmon chip information + * @groups: pointer to list of driver specific attribute groups * * Returns the pointer to the new device. The new device is automatically * unregistered with the parent device. diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c index f6a76679c650..5e5b32a1ec4b 100644 --- a/drivers/hwmon/iio_hwmon.c +++ b/drivers/hwmon/iio_hwmon.c @@ -23,7 +23,8 @@ * @channels: filled with array of channels from iio * @num_channels: number of channels in channels (saves counting twice) * @hwmon_dev: associated hwmon device - * @attr_group: the group of attributes + * @attr_group: the group of attributes + * @groups: null terminated array of attribute groups * @attrs: null terminated array of attribute pointers. */ struct iio_hwmon_state { diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index 62e38fa8cda2..e9e6aeabbf84 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -95,18 +95,20 @@ enum ina2xx_ids { ina219, ina226 }; struct ina2xx_config { u16 config_default; - int calibration_factor; + int calibration_value; int registers; int shunt_div; int bus_voltage_shift; int bus_voltage_lsb; /* uV */ - int power_lsb; /* uW */ + int power_lsb_factor; }; struct ina2xx_data { const struct ina2xx_config *config; long rshunt; + long current_lsb_uA; + long power_lsb_uW; struct mutex config_lock; struct regmap *regmap; @@ -116,21 +118,21 @@ struct ina2xx_data { static const struct ina2xx_config ina2xx_config[] = { [ina219] = { .config_default = INA219_CONFIG_DEFAULT, - .calibration_factor = 40960000, + .calibration_value = 4096, .registers = INA219_REGISTERS, .shunt_div = 100, .bus_voltage_shift = 3, .bus_voltage_lsb = 4000, - .power_lsb = 20000, + .power_lsb_factor = 20, }, [ina226] = { .config_default = INA226_CONFIG_DEFAULT, - .calibration_factor = 5120000, + .calibration_value = 2048, .registers = INA226_REGISTERS, .shunt_div = 400, .bus_voltage_shift = 0, .bus_voltage_lsb = 1250, - .power_lsb = 25000, + .power_lsb_factor = 25, }, }; @@ -169,12 +171,16 @@ static u16 ina226_interval_to_reg(int interval) return INA226_SHIFT_AVG(avg_bits); } +/* + * 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) { - u16 val = DIV_ROUND_CLOSEST(data->config->calibration_factor, - data->rshunt); - - return regmap_write(data->regmap, INA2XX_CALIBRATION, val); + return regmap_write(data->regmap, INA2XX_CALIBRATION, + data->config->calibration_value); } /* @@ -187,10 +193,6 @@ static int ina2xx_init(struct ina2xx_data *data) if (ret < 0) return ret; - /* - * Set current LSB to 1mA, shunt is in uOhms - * (equation 13 in datasheet). - */ return ina2xx_calibrate(data); } @@ -268,15 +270,15 @@ static int ina2xx_get_value(struct ina2xx_data *data, u8 reg, val = DIV_ROUND_CLOSEST(val, 1000); break; case INA2XX_POWER: - val = regval * data->config->power_lsb; + val = regval * data->power_lsb_uW; break; case INA2XX_CURRENT: - /* signed register, LSB=1mA (selected), in mA */ - val = (s16)regval; + /* signed register, result in mA */ + val = regval * data->current_lsb_uA; + val = DIV_ROUND_CLOSEST(val, 1000); break; case INA2XX_CALIBRATION: - val = DIV_ROUND_CLOSEST(data->config->calibration_factor, - regval); + val = regval; break; default: /* programmer goofed */ @@ -304,9 +306,32 @@ static ssize_t ina2xx_show_value(struct device *dev, ina2xx_get_value(data, attr->index, regval)); } -static ssize_t ina2xx_set_shunt(struct device *dev, - struct device_attribute *da, - const char *buf, size_t count) +/* + * 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) +{ + unsigned int dividend = DIV_ROUND_CLOSEST(1000000000, + data->config->shunt_div); + if (val <= 0 || 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_store_shunt(struct device *dev, + struct device_attribute *da, + const char *buf, size_t count) { unsigned long val; int status; @@ -316,18 +341,9 @@ static ssize_t ina2xx_set_shunt(struct device *dev, if (status < 0) return status; - if (val == 0 || - /* Values greater than the calibration factor make no sense. */ - val > data->config->calibration_factor) - return -EINVAL; - - mutex_lock(&data->config_lock); - data->rshunt = val; - status = ina2xx_calibrate(data); - mutex_unlock(&data->config_lock); + status = ina2xx_set_shunt(data, val); if (status < 0) return status; - return count; } @@ -387,7 +403,7 @@ static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ina2xx_show_value, NULL, /* shunt resistance */ static SENSOR_DEVICE_ATTR(shunt_resistor, S_IRUGO | S_IWUSR, - ina2xx_show_value, ina2xx_set_shunt, + ina2xx_show_value, ina2xx_store_shunt, INA2XX_CALIBRATION); /* update interval (ina226 only) */ @@ -438,6 +454,7 @@ static int ina2xx_probe(struct i2c_client *client, /* set the device type */ data->config = &ina2xx_config[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); @@ -448,10 +465,7 @@ static int ina2xx_probe(struct i2c_client *client, val = INA2XX_RSHUNT_DEFAULT; } - if (val <= 0 || val > data->config->calibration_factor) - return -ENODEV; - - data->rshunt = val; + ina2xx_set_shunt(data, val); ina2xx_regmap_config.max_register = data->config->registers; @@ -467,8 +481,6 @@ static int ina2xx_probe(struct i2c_client *client, return -ENODEV; } - mutex_init(&data->config_lock); - data->groups[group++] = &ina2xx_group; if (id->driver_data == ina226) data->groups[group++] = &ina226_group; diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c index 0721e175664a..06b4e1c78bd8 100644 --- a/drivers/hwmon/k10temp.c +++ b/drivers/hwmon/k10temp.c @@ -86,6 +86,7 @@ static const struct tctl_offset tctl_offset_table[] = { { 0x17, "AMD Ryzen 7 1800X", 20000 }, { 0x17, "AMD Ryzen Threadripper 1950X", 27000 }, { 0x17, "AMD Ryzen Threadripper 1920X", 27000 }, + { 0x17, "AMD Ryzen Threadripper 1900X", 27000 }, { 0x17, "AMD Ryzen Threadripper 1950", 10000 }, { 0x17, "AMD Ryzen Threadripper 1920", 10000 }, { 0x17, "AMD Ryzen Threadripper 1910", 10000 }, diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c index 005ffb5ffa92..49f4b33a5685 100644 --- a/drivers/hwmon/lm75.c +++ b/drivers/hwmon/lm75.c @@ -100,7 +100,7 @@ static int lm75_read(struct device *dev, enum hwmon_sensor_types type, switch (attr) { case hwmon_chip_update_interval: *val = data->sample_time; - break;; + break; default: return -EINVAL; } diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 08479006c7f9..6e4298e99222 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/ |