| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jean Delvare | 6775 | 94.80% | 13 | 44.83% |
| Guenter Roeck | 299 | 4.18% | 5 | 17.24% |
| Joe Perches | 40 | 0.56% | 1 | 3.45% |
| Jingoo Han | 7 | 0.10% | 1 | 3.45% |
| Tony Jones | 6 | 0.08% | 1 | 3.45% |
| Bernhard C. Schrenk | 5 | 0.07% | 1 | 3.45% |
| Julia Lawall | 5 | 0.07% | 2 | 6.90% |
| Greg Kroah-Hartman | 4 | 0.06% | 2 | 6.90% |
| Frans Meulenbroeks | 3 | 0.04% | 1 | 3.45% |
| Thomas Gleixner | 2 | 0.03% | 1 | 3.45% |
| H Hartley Sweeten | 1 | 0.01% | 1 | 3.45% |
| Total | 7147 | 29 |
// SPDX-License-Identifier: GPL-2.0-only /* * pc87427.c - hardware monitoring driver for the * National Semiconductor PC87427 Super-I/O chip * Copyright (C) 2006, 2008, 2010 Jean Delvare <jdelvare@suse.de> * * Supports the following chips: * * Chip #vin #fan #pwm #temp devid * PC87427 - 8 4 6 0xF2 * * This driver assumes that no more than one chip is present. * Only fans are fully supported so far. Temperatures are in read-only * mode, and voltages aren't supported at all. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/mutex.h> #include <linux/sysfs.h> #include <linux/ioport.h> #include <linux/acpi.h> #include <linux/io.h> static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(force_id, "Override the detected device ID"); static struct platform_device *pdev; #define DRVNAME "pc87427" /* * The lock mutex protects both the I/O accesses (needed because the * device is using banked registers) and the register cache (needed to keep * the data in the registers and the cache in sync at any time). */ struct pc87427_data { struct device *hwmon_dev; struct mutex lock; int address[2]; const char *name; unsigned long last_updated; /* in jiffies */ u8 fan_enabled; /* bit vector */ u16 fan[8]; /* register values */ u16 fan_min[8]; /* register values */ u8 fan_status[8]; /* register values */ u8 pwm_enabled; /* bit vector */ u8 pwm_auto_ok; /* bit vector */ u8 pwm_enable[4]; /* register values */ u8 pwm[4]; /* register values */ u8 temp_enabled; /* bit vector */ s16 temp[6]; /* register values */ s8 temp_min[6]; /* register values */ s8 temp_max[6]; /* register values */ s8 temp_crit[6]; /* register values */ u8 temp_status[6]; /* register values */ u8 temp_type[6]; /* register values */ }; struct pc87427_sio_data { unsigned short address[2]; u8 has_fanin; u8 has_fanout; }; /* * Super-I/O registers and operations */ #define SIOREG_LDSEL 0x07 /* Logical device select */ #define SIOREG_DEVID 0x20 /* Device ID */ #define SIOREG_CF2 0x22 /* Configuration 2 */ #define SIOREG_CF3 0x23 /* Configuration 3 */ #define SIOREG_CF4 0x24 /* Configuration 4 */ #define SIOREG_CF5 0x25 /* Configuration 5 */ #define SIOREG_CFB 0x2B /* Configuration B */ #define SIOREG_CFC 0x2C /* Configuration C */ #define SIOREG_CFD 0x2D /* Configuration D */ #define SIOREG_ACT 0x30 /* Device activation */ #define SIOREG_MAP 0x50 /* I/O or memory mapping */ #define SIOREG_IOBASE 0x60 /* I/O base address */ static const u8 logdev[2] = { 0x09, 0x14 }; static const char *logdev_str[2] = { DRVNAME " FMC", DRVNAME " HMC" }; #define LD_FAN 0 #define LD_IN 1 #define LD_TEMP 1 static inline int superio_enter(int sioaddr) { if (!request_muxed_region(sioaddr, 2, DRVNAME)) return -EBUSY; return 0; } static inline void superio_outb(int sioaddr, int reg, int val) { outb(reg, sioaddr); outb(val, sioaddr + 1); } static inline int superio_inb(int sioaddr, int reg) { outb(reg, sioaddr); return inb(sioaddr + 1); } static inline void superio_exit(int sioaddr) { outb(0x02, sioaddr); outb(0x02, sioaddr + 1); release_region(sioaddr, 2); } /* * Logical devices */ #define REGION_LENGTH 32 #define PC87427_REG_BANK 0x0f #define BANK_FM(nr) (nr) #define BANK_FT(nr) (0x08 + (nr)) #define BANK_FC(nr) (0x10 + (nr) * 2) #define BANK_TM(nr) (nr) #define BANK_VM(nr) (0x08 + (nr)) /* * I/O access functions */ /* ldi is the logical device index */ static inline int pc87427_read8(struct pc87427_data *data, u8 ldi, u8 reg) { return inb(data->address[ldi] + reg); } /* Must be called with data->lock held, except during init */ static inline int pc87427_read8_bank(struct pc87427_data *data, u8 ldi, u8 bank, u8 reg) { outb(bank, data->address[ldi] + PC87427_REG_BANK); return inb(data->address[ldi] + reg); } /* Must be called with data->lock held, except during init */ static inline void pc87427_write8_bank(struct pc87427_data *data, u8 ldi, u8 bank, u8 reg, u8 value) { outb(bank, data->address[ldi] + PC87427_REG_BANK); outb(value, data->address[ldi] + reg); } /* * Fan registers and conversions */ /* fan data registers are 16-bit wide */ #define PC87427_REG_FAN 0x12 #define PC87427_REG_FAN_MIN 0x14 #define PC87427_REG_FAN_STATUS 0x10 #define FAN_STATUS_STALL (1 << 3) #define FAN_STATUS_LOSPD (1 << 1) #define FAN_STATUS_MONEN (1 << 0) /* * Dedicated function to read all registers related to a given fan input. * This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 7 */ static void pc87427_readall_fan(struct pc87427_data *data, u8 nr) { int iobase = data->address[LD_FAN]; outb(BANK_FM(nr), iobase + PC87427_REG_BANK); data->fan[nr] = inw(iobase + PC87427_REG_FAN); data->fan_min[nr] = inw(iobase + PC87427_REG_FAN_MIN); data->fan_status[nr] = inb(iobase + PC87427_REG_FAN_STATUS); /* Clear fan alarm bits */ outb(data->fan_status[nr], iobase + PC87427_REG_FAN_STATUS); } /* * The 2 LSB of fan speed registers are used for something different. * The actual 2 LSB of the measurements are not available. */ static inline unsigned long fan_from_reg(u16 reg) { reg &= 0xfffc; if (reg == 0x0000 || reg == 0xfffc) return 0; return 5400000UL / reg; } /* The 2 LSB of the fan speed limit registers are not significant. */ static inline u16 fan_to_reg(unsigned long val) { if (val < 83UL) return 0xffff; if (val >= 1350000UL) return 0x0004; return ((1350000UL + val / 2) / val) << 2; } /* * PWM registers and conversions */ #define PC87427_REG_PWM_ENABLE 0x10 #define PC87427_REG_PWM_DUTY 0x12 #define PWM_ENABLE_MODE_MASK (7 << 4) #define PWM_ENABLE_CTLEN (1 << 0) #define PWM_MODE_MANUAL (0 << 4) #define PWM_MODE_AUTO (1 << 4) #define PWM_MODE_OFF (2 << 4) #define PWM_MODE_ON (7 << 4) /* * Dedicated function to read all registers related to a given PWM output. * This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 3 */ static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr) { int iobase = data->address[LD_FAN]; outb(BANK_FC(nr), iobase + PC87427_REG_BANK); data->pwm_enable[nr] = inb(iobase + PC87427_REG_PWM_ENABLE); data->pwm[nr] = inb(iobase + PC87427_REG_PWM_DUTY); } static inline int pwm_enable_from_reg(u8 reg) { switch (reg & PWM_ENABLE_MODE_MASK) { case PWM_MODE_ON: return 0; case PWM_MODE_MANUAL: case PWM_MODE_OFF: return 1; case PWM_MODE_AUTO: return 2; default: return -EPROTO; } } static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval) { switch (val) { default: return PWM_MODE_ON; case 1: return pwmval ? PWM_MODE_MANUAL : PWM_MODE_OFF; case 2: return PWM_MODE_AUTO; } } /* * Temperature registers and conversions */ #define PC87427_REG_TEMP_STATUS 0x10 #define PC87427_REG_TEMP 0x14 #define PC87427_REG_TEMP_MAX 0x18 #define PC87427_REG_TEMP_MIN 0x19 #define PC87427_REG_TEMP_CRIT 0x1a #define PC87427_REG_TEMP_TYPE 0x1d #define TEMP_STATUS_CHANEN (1 << 0) #define TEMP_STATUS_LOWFLG (1 << 1) #define TEMP_STATUS_HIGHFLG (1 << 2) #define TEMP_STATUS_CRITFLG (1 << 3) #define TEMP_STATUS_SENSERR (1 << 5) #define TEMP_TYPE_MASK (3 << 5) #define TEMP_TYPE_THERMISTOR (1 << 5) #define TEMP_TYPE_REMOTE_DIODE (2 << 5) #define TEMP_TYPE_LOCAL_DIODE (3 << 5) /* * Dedicated function to read all registers related to a given temperature * input. This saves us quite a few locks and bank selections. * Must be called with data->lock held. * nr is from 0 to 5 */ static void pc87427_readall_temp(struct pc87427_data *data, u8 nr) { int iobase = data->address[LD_TEMP]; outb(BANK_TM(nr), iobase + PC87427_REG_BANK); data->temp[nr] = le16_to_cpu(inw(iobase + PC87427_REG_TEMP)); data->temp_max[nr] = inb(iobase + PC87427_REG_TEMP_MAX); data->temp_min[nr] = inb(iobase + PC87427_REG_TEMP_MIN); data->temp_crit[nr] = inb(iobase + PC87427_REG_TEMP_CRIT); data->temp_type[nr] = inb(iobase + PC87427_REG_TEMP_TYPE); data->temp_status[nr] = inb(iobase + PC87427_REG_TEMP_STATUS); /* Clear fan alarm bits */ outb(data->temp_status[nr], iobase + PC87427_REG_TEMP_STATUS); } static inline unsigned int temp_type_from_reg(u8 reg) { switch (reg & TEMP_TYPE_MASK) { case TEMP_TYPE_THERMISTOR: return 4; case TEMP_TYPE_REMOTE_DIODE: case TEMP_TYPE_LOCAL_DIODE: return 3; default: return 0; } } /* * We assume 8-bit thermal sensors; 9-bit thermal sensors are possible * too, but I have no idea how to figure out when they are used. */ static inline long temp_from_reg(s16 reg) { return reg * 1000 / 256; } static inline long temp_from_reg8(s8 reg) { return reg * 1000; } /* * Data interface */ static struct pc87427_data *pc87427_update_device(struct device *dev) { struct pc87427_data *data = dev_get_drvdata(dev); int i; mutex_lock(&data->lock); if (!time_after(jiffies, data->last_updated + HZ) && data->last_updated) goto done; /* Fans */ for (i = 0; i < 8; i++) { if (!(data->fan_enabled & (1 << i))) continue; pc87427_readall_fan(data, i); } /* PWM outputs */ for (i = 0; i < 4; i++) { if (!(data->pwm_enabled & (1 << i))) continue; pc87427_readall_pwm(data, i); } /* Temperature channels */ for (i = 0; i < 6; i++) { if (!(data->temp_enabled & (1 << i))) continue; pc87427_readall_temp(data, i); } data->last_updated = jiffies; done: mutex_unlock(&data->lock); return data; } static ssize_t fan_input_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%lu\n", fan_from_reg(data->fan[nr])); } static ssize_t fan_min_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%lu\n", fan_from_reg(data->fan_min[nr])); } static ssize_t fan_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->fan_status[nr] & FAN_STATUS_LOSPD)); } static ssize_t fan_fault_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->fan_status[nr] & FAN_STATUS_STALL)); } static ssize_t fan_min_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { struct pc87427_data *data = dev_get_drvdata(dev); int nr = to_sensor_dev_attr(devattr)->index; unsigned long val; int iobase = data->address[LD_FAN]; if (kstrtoul(buf, 10, &val) < 0) return -EINVAL; mutex_lock(&data->lock); outb(BANK_FM(nr), iobase + PC87427_REG_BANK); /* * The low speed limit registers are read-only while monitoring * is enabled, so we have to disable monitoring, then change the * limit, and finally enable monitoring again. */ outb(0, iobase + PC87427_REG_FAN_STATUS); data->fan_min[nr] = fan_to_reg(val); outw(data->fan_min[nr], iobase + PC87427_REG_FAN_MIN); outb(FAN_STATUS_MONEN, iobase + PC87427_REG_FAN_STATUS); mutex_unlock(&data->lock); return count; } static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); static SENSOR_DEVICE_ATTR_RO(fan3_input, fan_input, 2); static SENSOR_DEVICE_ATTR_RO(fan4_input, fan_input, 3); static SENSOR_DEVICE_ATTR_RO(fan5_input, fan_input, 4); static SENSOR_DEVICE_ATTR_RO(fan6_input, fan_input, 5); static SENSOR_DEVICE_ATTR_RO(fan7_input, fan_input, 6); static SENSOR_DEVICE_ATTR_RO(fan8_input, fan_input, 7); static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); static SENSOR_DEVICE_ATTR_RW(fan3_min, fan_min, 2); static SENSOR_DEVICE_ATTR_RW(fan4_min, fan_min, 3); static SENSOR_DEVICE_ATTR_RW(fan5_min, fan_min, 4); static SENSOR_DEVICE_ATTR_RW(fan6_min, fan_min, 5); static SENSOR_DEVICE_ATTR_RW(fan7_min, fan_min, 6); static SENSOR_DEVICE_ATTR_RW(fan8_min, fan_min, 7); static SENSOR_DEVICE_ATTR_RO(fan1_alarm, fan_alarm, 0); static SENSOR_DEVICE_ATTR_RO(fan2_alarm, fan_alarm, 1); static SENSOR_DEVICE_ATTR_RO(fan3_alarm, fan_alarm, 2); static SENSOR_DEVICE_ATTR_RO(fan4_alarm, fan_alarm, 3); static SENSOR_DEVICE_ATTR_RO(fan5_alarm, fan_alarm, 4); static SENSOR_DEVICE_ATTR_RO(fan6_alarm, fan_alarm, 5); static SENSOR_DEVICE_ATTR_RO(fan7_alarm, fan_alarm, 6); static SENSOR_DEVICE_ATTR_RO(fan8_alarm, fan_alarm, 7); static SENSOR_DEVICE_ATTR_RO(fan1_fault, fan_fault, 0); static SENSOR_DEVICE_ATTR_RO(fan2_fault, fan_fault, 1); static SENSOR_DEVICE_ATTR_RO(fan3_fault, fan_fault, 2); static SENSOR_DEVICE_ATTR_RO(fan4_fault, fan_fault, 3); static SENSOR_DEVICE_ATTR_RO(fan5_fault, fan_fault, 4); static SENSOR_DEVICE_ATTR_RO(fan6_fault, fan_fault, 5); static SENSOR_DEVICE_ATTR_RO(fan7_fault, fan_fault, 6); static SENSOR_DEVICE_ATTR_RO(fan8_fault, fan_fault, 7); static struct attribute *pc87427_attributes_fan[8][5] = { { &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan1_min.dev_attr.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_fan1_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan2_min.dev_attr.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &sensor_dev_attr_fan2_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan3_input.dev_attr.attr, &sensor_dev_attr_fan3_min.dev_attr.attr, &sensor_dev_attr_fan3_alarm.dev_attr.attr, &sensor_dev_attr_fan3_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan4_input.dev_attr.attr, &sensor_dev_attr_fan4_min.dev_attr.attr, &sensor_dev_attr_fan4_alarm.dev_attr.attr, &sensor_dev_attr_fan4_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan5_input.dev_attr.attr, &sensor_dev_attr_fan5_min.dev_attr.attr, &sensor_dev_attr_fan5_alarm.dev_attr.attr, &sensor_dev_attr_fan5_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan6_input.dev_attr.attr, &sensor_dev_attr_fan6_min.dev_attr.attr, &sensor_dev_attr_fan6_alarm.dev_attr.attr, &sensor_dev_attr_fan6_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan7_input.dev_attr.attr, &sensor_dev_attr_fan7_min.dev_attr.attr, &sensor_dev_attr_fan7_alarm.dev_attr.attr, &sensor_dev_attr_fan7_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_fan8_input.dev_attr.attr, &sensor_dev_attr_fan8_min.dev_attr.attr, &sensor_dev_attr_fan8_alarm.dev_attr.attr, &sensor_dev_attr_fan8_fault.dev_attr.attr, NULL } }; static const struct attribute_group pc87427_group_fan[8] = { { .attrs = pc87427_attributes_fan[0] }, { .attrs = pc87427_attributes_fan[1] }, { .attrs = pc87427_attributes_fan[2] }, { .attrs = pc87427_attributes_fan[3] }, { .attrs = pc87427_attributes_fan[4] }, { .attrs = pc87427_attributes_fan[5] }, { .attrs = pc87427_attributes_fan[6] }, { .attrs = pc87427_attributes_fan[7] }, }; /* * Must be called with data->lock held and pc87427_readall_pwm() freshly * called */ static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode) { int iobase = data->address[LD_FAN]; data->pwm_enable[nr] &= ~PWM_ENABLE_MODE_MASK; data->pwm_enable[nr] |= mode; outb(data->pwm_enable[nr], iobase + PC87427_REG_PWM_ENABLE); } static ssize_t pwm_enable_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; int pwm_enable; pwm_enable = pwm_enable_from_reg(data->pwm_enable[nr]); if (pwm_enable < 0) return pwm_enable; return sprintf(buf, "%d\n", pwm_enable); } static ssize_t pwm_enable_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { struct pc87427_data *data = dev_get_drvdata(dev); int nr = to_sensor_dev_attr(devattr)->index; unsigned long val; if (kstrtoul(buf, 10, &val) < 0 || val > 2) return -EINVAL; /* Can't go to automatic mode if it isn't configured */ if (val == 2 && !(data->pwm_auto_ok & (1 << nr))) return -EINVAL; mutex_lock(&data->lock); pc87427_readall_pwm(data, nr); update_pwm_enable(data, nr, pwm_enable_to_reg(val, data->pwm[nr])); mutex_unlock(&data->lock); return count; } static ssize_t pwm_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", (int)data->pwm[nr]); } static ssize_t pwm_store(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { struct pc87427_data *data = dev_get_drvdata(dev); int nr = to_sensor_dev_attr(devattr)->index; unsigned long val; int iobase = data->address[LD_FAN]; u8 mode; if (kstrtoul(buf, 10, &val) < 0 || val > 0xff) return -EINVAL; mutex_lock(&data->lock); pc87427_readall_pwm(data, nr); mode = data->pwm_enable[nr] & PWM_ENABLE_MODE_MASK; if (mode != PWM_MODE_MANUAL && mode != PWM_MODE_OFF) { dev_notice(dev, "Can't set PWM%d duty cycle while not in manual mode\n", nr + 1); mutex_unlock(&data->lock); return -EPERM; } /* We may have to change the mode */ if (mode == PWM_MODE_MANUAL && val == 0) { /* Transition from Manual to Off */ update_pwm_enable(data, nr, PWM_MODE_OFF); mode = PWM_MODE_OFF; dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, "manual", "off"); } else if (mode == PWM_MODE_OFF && val != 0) { /* Transition from Off to Manual */ update_pwm_enable(data, nr, PWM_MODE_MANUAL); mode = PWM_MODE_MANUAL; dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, "off", "manual"); } data->pwm[nr] = val; if (mode == PWM_MODE_MANUAL) outb(val, iobase + PC87427_REG_PWM_DUTY); mutex_unlock(&data->lock); return count; } static SENSOR_DEVICE_ATTR_RW(pwm1_enable, pwm_enable, 0); static SENSOR_DEVICE_ATTR_RW(pwm2_enable, pwm_enable, 1); static SENSOR_DEVICE_ATTR_RW(pwm3_enable, pwm_enable, 2); static SENSOR_DEVICE_ATTR_RW(pwm4_enable, pwm_enable, 3); static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0); static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1); static SENSOR_DEVICE_ATTR_RW(pwm3, pwm, 2); static SENSOR_DEVICE_ATTR_RW(pwm4, pwm, 3); static struct attribute *pc87427_attributes_pwm[4][3] = { { &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1.dev_attr.attr, NULL }, { &sensor_dev_attr_pwm2_enable.dev_attr.attr, &sensor_dev_attr_pwm2.dev_attr.attr, NULL }, { &sensor_dev_attr_pwm3_enable.dev_attr.attr, &sensor_dev_attr_pwm3.dev_attr.attr, NULL }, { &sensor_dev_attr_pwm4_enable.dev_attr.attr, &sensor_dev_attr_pwm4.dev_attr.attr, NULL } }; static const struct attribute_group pc87427_group_pwm[4] = { { .attrs = pc87427_attributes_pwm[0] }, { .attrs = pc87427_attributes_pwm[1] }, { .attrs = pc87427_attributes_pwm[2] }, { .attrs = pc87427_attributes_pwm[3] }, }; static ssize_t temp_input_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr])); } static ssize_t temp_min_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_min[nr])); } static ssize_t temp_max_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_max[nr])); } static ssize_t temp_crit_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_crit[nr])); } static ssize_t temp_type_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%u\n", temp_type_from_reg(data->temp_type[nr])); } static ssize_t temp_min_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->temp_status[nr] & TEMP_STATUS_LOWFLG)); } static ssize_t temp_max_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->temp_status[nr] & TEMP_STATUS_HIGHFLG)); } static ssize_t temp_crit_alarm_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->temp_status[nr] & TEMP_STATUS_CRITFLG)); } static ssize_t temp_fault_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = pc87427_update_device(dev); int nr = to_sensor_dev_attr(devattr)->index; return sprintf(buf, "%d\n", !!(data->temp_status[nr] & TEMP_STATUS_SENSERR)); } static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2); static SENSOR_DEVICE_ATTR_RO(temp4_input, temp_input, 3); static SENSOR_DEVICE_ATTR_RO(temp5_input, temp_input, 4); static SENSOR_DEVICE_ATTR_RO(temp6_input, temp_input, 5); static SENSOR_DEVICE_ATTR_RO(temp1_min, temp_min, 0); static SENSOR_DEVICE_ATTR_RO(temp2_min, temp_min, 1); static SENSOR_DEVICE_ATTR_RO(temp3_min, temp_min, 2); static SENSOR_DEVICE_ATTR_RO(temp4_min, temp_min, 3); static SENSOR_DEVICE_ATTR_RO(temp5_min, temp_min, 4); static SENSOR_DEVICE_ATTR_RO(temp6_min, temp_min, 5); static SENSOR_DEVICE_ATTR_RO(temp1_max, temp_max, 0); static SENSOR_DEVICE_ATTR_RO(temp2_max, temp_max, 1); static SENSOR_DEVICE_ATTR_RO(temp3_max, temp_max, 2); static SENSOR_DEVICE_ATTR_RO(temp4_max, temp_max, 3); static SENSOR_DEVICE_ATTR_RO(temp5_max, temp_max, 4); static SENSOR_DEVICE_ATTR_RO(temp6_max, temp_max, 5); static SENSOR_DEVICE_ATTR_RO(temp1_crit, temp_crit, 0); static SENSOR_DEVICE_ATTR_RO(temp2_crit, temp_crit, 1); static SENSOR_DEVICE_ATTR_RO(temp3_crit, temp_crit, 2); static SENSOR_DEVICE_ATTR_RO(temp4_crit, temp_crit, 3); static SENSOR_DEVICE_ATTR_RO(temp5_crit, temp_crit, 4); static SENSOR_DEVICE_ATTR_RO(temp6_crit, temp_crit, 5); static SENSOR_DEVICE_ATTR_RO(temp1_type, temp_type, 0); static SENSOR_DEVICE_ATTR_RO(temp2_type, temp_type, 1); static SENSOR_DEVICE_ATTR_RO(temp3_type, temp_type, 2); static SENSOR_DEVICE_ATTR_RO(temp4_type, temp_type, 3); static SENSOR_DEVICE_ATTR_RO(temp5_type, temp_type, 4); static SENSOR_DEVICE_ATTR_RO(temp6_type, temp_type, 5); static SENSOR_DEVICE_ATTR_RO(temp1_min_alarm, temp_min_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_min_alarm, temp_min_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_min_alarm, temp_min_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_min_alarm, temp_min_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_min_alarm, temp_min_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_min_alarm, temp_min_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, temp_max_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, temp_max_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_max_alarm, temp_max_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_max_alarm, temp_max_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_max_alarm, temp_max_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_max_alarm, temp_max_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, temp_crit_alarm, 0); static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, temp_crit_alarm, 1); static SENSOR_DEVICE_ATTR_RO(temp3_crit_alarm, temp_crit_alarm, 2); static SENSOR_DEVICE_ATTR_RO(temp4_crit_alarm, temp_crit_alarm, 3); static SENSOR_DEVICE_ATTR_RO(temp5_crit_alarm, temp_crit_alarm, 4); static SENSOR_DEVICE_ATTR_RO(temp6_crit_alarm, temp_crit_alarm, 5); static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0); static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1); static SENSOR_DEVICE_ATTR_RO(temp3_fault, temp_fault, 2); static SENSOR_DEVICE_ATTR_RO(temp4_fault, temp_fault, 3); static SENSOR_DEVICE_ATTR_RO(temp5_fault, temp_fault, 4); static SENSOR_DEVICE_ATTR_RO(temp6_fault, temp_fault, 5); static struct attribute *pc87427_attributes_temp[6][10] = { { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_min.dev_attr.attr, &sensor_dev_attr_temp1_max.dev_attr.attr, &sensor_dev_attr_temp1_crit.dev_attr.attr, &sensor_dev_attr_temp1_type.dev_attr.attr, &sensor_dev_attr_temp1_min_alarm.dev_attr.attr, &sensor_dev_attr_temp1_max_alarm.dev_attr.attr, &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp1_fault.dev_attr.attr, NULL }, { &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_type.dev_attr.attr, &sensor_dev_attr_temp2_min_alarm.dev_attr.attr, &sensor_dev_attr_temp2_max_alarm.dev_attr.attr, &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp2_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp3_min.dev_attr.attr, &sensor_dev_attr_temp3_max.dev_attr.attr, &sensor_dev_attr_temp3_crit.dev_attr.attr, &sensor_dev_attr_temp3_type.dev_attr.attr, &sensor_dev_attr_temp3_min_alarm.dev_attr.attr, &sensor_dev_attr_temp3_max_alarm.dev_attr.attr, &sensor_dev_attr_temp3_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp3_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_temp4_input.dev_attr.attr, &sensor_dev_attr_temp4_min.dev_attr.attr, &sensor_dev_attr_temp4_max.dev_attr.attr, &sensor_dev_attr_temp4_crit.dev_attr.attr, &sensor_dev_attr_temp4_type.dev_attr.attr, &sensor_dev_attr_temp4_min_alarm.dev_attr.attr, &sensor_dev_attr_temp4_max_alarm.dev_attr.attr, &sensor_dev_attr_temp4_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp4_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_temp5_input.dev_attr.attr, &sensor_dev_attr_temp5_min.dev_attr.attr, &sensor_dev_attr_temp5_max.dev_attr.attr, &sensor_dev_attr_temp5_crit.dev_attr.attr, &sensor_dev_attr_temp5_type.dev_attr.attr, &sensor_dev_attr_temp5_min_alarm.dev_attr.attr, &sensor_dev_attr_temp5_max_alarm.dev_attr.attr, &sensor_dev_attr_temp5_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp5_fault.dev_attr.attr, NULL }, { &sensor_dev_attr_temp6_input.dev_attr.attr, &sensor_dev_attr_temp6_min.dev_attr.attr, &sensor_dev_attr_temp6_max.dev_attr.attr, &sensor_dev_attr_temp6_crit.dev_attr.attr, &sensor_dev_attr_temp6_type.dev_attr.attr, &sensor_dev_attr_temp6_min_alarm.dev_attr.attr, &sensor_dev_attr_temp6_max_alarm.dev_attr.attr, &sensor_dev_attr_temp6_crit_alarm.dev_attr.attr, &sensor_dev_attr_temp6_fault.dev_attr.attr, NULL } }; static const struct attribute_group pc87427_group_temp[6] = { { .attrs = pc87427_attributes_temp[0] }, { .attrs = pc87427_attributes_temp[1] }, { .attrs = pc87427_attributes_temp[2] }, { .attrs = pc87427_attributes_temp[3] }, { .attrs = pc87427_attributes_temp[4] }, { .attrs = pc87427_attributes_temp[5] }, }; static ssize_t name_show(struct device *dev, struct device_attribute *devattr, char *buf) { struct pc87427_data *data = dev_get_drvdata(dev); return sprintf(buf, "%s\n", data->name); } static DEVICE_ATTR_RO(name); /* * Device detection, attach and detach */ static int pc87427_request_regions(struct platform_device *pdev, int count) { struct resource *res; int i; for (i = 0; i < count; i++) { res = platform_get_resource(pdev, IORESOURCE_IO, i); if (!res) { dev_err(&pdev->dev, "Missing resource #%d\n", i); return -ENOENT; } if (!devm_request_region(&pdev->dev, res->start, resource_size(res), DRVNAME)) { dev_err(&pdev->dev, "Failed to request region 0x%lx-0x%lx\n", (unsigned long)res->start, (unsigned long)res->end); return -EBUSY; } } return 0; } static void pc87427_init_device(struct device *dev) { struct pc87427_sio_data *sio_data = dev_get_platdata(dev); struct pc87427_data *data = dev_get_drvdata(dev); int i; u8 reg; /* The FMC module should be ready */ reg = pc87427_read8(data, LD_FAN, PC87427_REG_BANK); if (!(reg & 0x80)) dev_warn(dev, "%s module not ready!\n", "FMC"); /* Check which fans are enabled */ for (i = 0; i < 8; i++) { if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ continue; reg = pc87427_read8_bank(data, LD_FAN, BANK_FM(i), PC87427_REG_FAN_STATUS); if (reg & FAN_STATUS_MONEN) data->fan_enabled |= (1 << i); } if (!data->fan_enabled) { dev_dbg(dev, "Enabling monitoring of all fans\n"); for (i = 0; i < 8; i++) { if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ continue; pc87427_write8_bank(data, LD_FAN, BANK_FM(i), PC87427_REG_FAN_STATUS, FAN_STATUS_MONEN); } data->fan_enabled = sio_data->has_fanin; } /* Check which PWM outputs are enabled */ for (i = 0; i < 4; i++) { if (!(sio_data->has_fanout & (1 << i))) /* Not wired */ continue; reg = pc87427_read8_bank(data, LD_FAN, BANK_FC(i), PC87427_REG_PWM_ENABLE); if (reg & PWM_ENABLE_CTLEN) data->pwm_enabled |= (1 << i); /* * We don't expose an interface to reconfigure the automatic * fan control mode, so only allow to return to this mode if * it was originally set. */ if ((reg & PWM_ENABLE_MODE_MASK) == PWM_MODE_AUTO) { dev_dbg(dev, "PWM%d is in automatic control mode\n", i + 1); data->pwm_auto_ok |= (1 << i); } } /* The HMC module should be ready */ reg = pc87427_read8(data, LD_TEMP, PC87427_REG_BANK); if (!(reg & 0x80)) dev_warn(dev, "%s module not ready!\n", "HMC"); /* Check which temperature channels are enabled */ for (i = 0; i < 6; i++) { reg = pc87427_read8_bank(data, LD_TEMP, BANK_TM(i), PC87427_REG_TEMP_STATUS); if (reg & TEMP_STATUS_CHANEN) data->temp_enabled |= (1 << i); } } static void pc87427_remove_files(struct device *dev) { struct pc87427_data *data = dev_get_drvdata(dev); int i; device_remove_file(dev, &dev_attr_name); for (i = 0; i < 8; i++) { if (!(data->fan_enabled & (1 << i))) continue; sysfs_remove_group(&dev->kobj, &pc87427_group_fan[i]); } for (i = 0; i < 4; i++) { if (!(data->pwm_enabled & (1 << i))) continue; sysfs_remove_group(&dev->kobj, &pc87427_group_pwm[i]); } for (i = 0; i < 6; i++) { if (!(data->temp_enabled & (1 << i))) continue; sysfs_remove_group(&dev->kobj, &pc87427_group_temp[i]); } } static int pc87427_probe(struct platform_device *pdev) { struct pc87427_sio_data *sio_data = dev_get_platdata(&pdev->dev); struct pc87427_data *data; int i, err, res_count; data = devm_kzalloc(&pdev->dev, sizeof(struct pc87427_data), GFP_KERNEL); if (!data) return -ENOMEM; data->address[0] = sio_data->address[0]; data->address[1] = sio_data->address[1]; res_count = (data->address[0] != 0) + (data->address[1] != 0); err = pc87427_request_regions(pdev, res_count); if (err) return err; mutex_init(&data->lock); data->name = "pc87427"; platform_set_drvdata(pdev, data); pc87427_init_device(&pdev->dev); /* Register sysfs hooks */ err = device_create_file(&pdev->dev, &dev_attr_name); if (err) return err; for (i = 0; i < 8; i++) { if (!(data->fan_enabled & (1 << i))) continue; err = sysfs_create_group(&pdev->dev.kobj, &pc87427_group_fan[i]); if (err) goto exit_remove_files; } for (i = 0; i < 4; i++) { if (!(data->pwm_enabled & (1 << i))) continue; err = sysfs_create_group(&pdev->dev.kobj, &pc87427_group_pwm[i]); if (err) goto exit_remove_files; } for (i = 0; i < 6; i++) { if (!(data->temp_enabled & (1 << i))) continue; err = sysfs_create_group(&pdev->dev.kobj, &pc87427_group_temp[i]); if (err) goto exit_remove_files; } data->hwmon_dev = hwmon_device_register(&pdev->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); dev_err(&pdev->dev, "Class registration failed (%d)\n", err); goto exit_remove_files; } return 0; exit_remove_files: pc87427_remove_files(&pdev->dev); return err; } static int pc87427_remove(struct platform_device *pdev) { struct pc87427_data *data = platform_get_drvdata(pdev); hwmon_device_unregister(data->hwmon_dev); pc87427_remove_files(&pdev->dev); return 0; } static struct platform_driver pc87427_driver = { .driver = { .name = DRVNAME, }, .probe = pc87427_probe, .remove = pc87427_remove, }; static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data) { struct resource res[2] = { { .flags = IORESOURCE_IO }, { .flags = IORESOURCE_IO }, }; int err, i, res_count; res_count = 0; for (i = 0; i < 2; i++) { if (!sio_data->address[i]) continue; res[res_count].start = sio_data->address[i]; res[res_count].end = sio_data->address[i] + REGION_LENGTH - 1; res[res_count].name = logdev_str[i]; err = acpi_check_resource_conflict(&res[res_count]); if (err) goto exit; res_count++; } pdev = platform_device_alloc(DRVNAME, res[0].start); if (!pdev) { err = -ENOMEM; pr_err("Device allocation failed\n"); goto exit; } err = platform_device_add_resources(pdev, res, res_count); if (err) { pr_err("Device resource addition failed (%d)\n", err); goto exit_device_put; } err = platform_device_add_data(pdev, sio_data, sizeof(struct pc87427_sio_data)); if (err) { pr_err("Platform data allocation failed\n"); goto exit_device_put; } err = platform_device_add(pdev); if (err) { pr_err("Device addition failed (%d)\n", err); goto exit_device_put; } return 0; exit_device_put: platform_device_put(pdev); exit: return err; } static int __init pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data) { u16 val; u8 cfg, cfg_b; int i, err; err = superio_enter(sioaddr); if (err) return err; /* Identify device */ val = force_id ? force_id : superio_inb(sioaddr, SIOREG_DEVID); if (val != 0xf2) { /* PC87427 */ err = -ENODEV; goto exit; } for (i = 0; i < 2; i++) { sio_data->address[i] = 0; /* Select logical device */ superio_outb(sioaddr, SIOREG_LDSEL, logdev[i]); val = superio_inb(sioaddr, SIOREG_ACT); if (!(val & 0x01)) { pr_info("Logical device 0x%02x not activated\n", logdev[i]); continue; } val = superio_inb(sioaddr, SIOREG_MAP); if (val & 0x01) { pr_warn("Logical device 0x%02x is memory-mapped, can't use\n", logdev[i]); continue; } val = (superio_inb(sioaddr, SIOREG_IOBASE) << 8) | superio_inb(sioaddr, SIOREG_IOBASE + 1); if (!val) { pr_info("I/O base address not set for logical device 0x%02x\n", logdev[i]); continue; } sio_data->address[i] = val; } /* No point in loading the driver if everything is disabled */ if (!sio_data->address[0] && !sio_data->address[1]) { err = -ENODEV; goto exit; } /* Check which fan inputs are wired */ sio_data->has_fanin = (1 << 2) | (1 << 3); /* FANIN2, FANIN3 */ cfg = superio_inb(sioaddr, SIOREG_CF2); if (!(cfg & (1 << 3))) sio_data->has_fanin |= (1 << 0); /* FANIN0 */ if (!(cfg & (1 << 2))) sio_data->has_fanin |= (1 << 4); /* FANIN4 */ cfg = superio_inb(sioaddr, SIOREG_CFD); if (!(cfg & (1 << 0))) sio_data->has_fanin |= (1 << 1); /* FANIN1 */ cfg = superio_inb(sioaddr, SIOREG_CF4); if (!(cfg & (1 << 0))) sio_data->has_fanin |= (1 << 7); /* FANIN7 */ cfg_b = superio_inb(sioaddr, SIOREG_CFB); if (!(cfg & (1 << 1)) && (cfg_b & (1 << 3))) sio_data->has_fanin |= (1 << 5); /* FANIN5 */ cfg = superio_inb(sioaddr, SIOREG_CF3); if ((cfg & (1 << 3)) && !(cfg_b & (1 << 5))) sio_data->has_fanin |= (1 << 6); /* FANIN6 */ /* Check which fan outputs are wired */ sio_data->has_fanout = (1 << 0); /* FANOUT0 */ if (cfg_b & (1 << 0)) sio_data->has_fanout |= (1 << 3); /* FANOUT3 */ cfg = superio_inb(sioaddr, SIOREG_CFC); if (!(cfg & (1 << 4))) { if (cfg_b & (1 << 1)) sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ if (cfg_b & (1 << 2)) sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ } /* FANOUT1 and FANOUT2 can each be routed to 2 different pins */ cfg = superio_inb(sioaddr, SIOREG_CF5); if (cfg & (1 << 6)) sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ if (cfg & (1 << 5)) sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ exit: superio_exit(sioaddr); return err; } static int __init pc87427_init(void) { int err; struct pc87427_sio_data sio_data; if (pc87427_find(0x2e, &sio_data) && pc87427_find(0x4e, &sio_data)) return -ENODEV; err = platform_driver_register(&pc87427_driver); if (err) goto exit; /* Sets global pdev as a side effect */ err = pc87427_device_add(&sio_data); if (err) goto exit_driver; return 0; exit_driver: platform_driver_unregister(&pc87427_driver); exit: return err; } static void __exit pc87427_exit(void) { platform_device_unregister(pdev); platform_driver_unregister(&pc87427_driver); } MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>"); MODULE_DESCRIPTION("PC87427 hardware monitoring driver"); MODULE_LICENSE("GPL"); module_init(pc87427_init); module_exit(pc87427_exit);
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