diff options
Diffstat (limited to 'drivers/hwmon/f71882fg.c')
| -rw-r--r-- | drivers/hwmon/f71882fg.c | 948 |
1 files changed, 948 insertions, 0 deletions
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c new file mode 100644 index 0000000..71556e6 --- /dev/null +++ b/drivers/hwmon/f71882fg.c @@ -0,0 +1,948 @@ +/*************************************************************************** + * Copyright (C) 2006 by Hans Edgington <hans@edgington.nl> * + * Copyright (C) 2007 by Hans de Goede <j.w.r.degoede@hhs.nl> * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#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 <asm/io.h> + +#define DRVNAME "f71882fg" + +#define SIO_F71882FG_LD_HWM 0x04 /* Hardware monitor logical device*/ +#define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */ +#define SIO_LOCK_KEY 0xAA /* Key to diasble Super-I/O */ + +#define SIO_REG_LDSEL 0x07 /* Logical device select */ +#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ +#define SIO_REG_DEVREV 0x22 /* Device revision */ +#define SIO_REG_MANID 0x23 /* Fintek ID (2 bytes) */ +#define SIO_REG_ENABLE 0x30 /* Logical device enable */ +#define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ + +#define SIO_FINTEK_ID 0x1934 /* Manufacturers ID */ +#define SIO_F71882_ID 0x0541 /* Chipset ID */ + +#define REGION_LENGTH 8 +#define ADDR_REG_OFFSET 5 +#define DATA_REG_OFFSET 6 + +#define F71882FG_REG_PECI 0x0A + +#define F71882FG_REG_IN_STATUS 0x12 +#define F71882FG_REG_IN_BEEP 0x13 +#define F71882FG_REG_IN(nr) (0x20 + (nr)) +#define F71882FG_REG_IN1_HIGH 0x32 + +#define F71882FG_REG_FAN(nr) (0xA0 + (16 * (nr))) +#define F71882FG_REG_FAN_STATUS 0x92 +#define F71882FG_REG_FAN_BEEP 0x93 + +#define F71882FG_REG_TEMP(nr) (0x72 + 2 * (nr)) +#define F71882FG_REG_TEMP_OVT(nr) (0x82 + 2 * (nr)) +#define F71882FG_REG_TEMP_HIGH(nr) (0x83 + 2 * (nr)) +#define F71882FG_REG_TEMP_STATUS 0x62 +#define F71882FG_REG_TEMP_BEEP 0x63 +#define F71882FG_REG_TEMP_HYST1 0x6C +#define F71882FG_REG_TEMP_HYST23 0x6D +#define F71882FG_REG_TEMP_TYPE 0x6B +#define F71882FG_REG_TEMP_DIODE_OPEN 0x6F + +#define F71882FG_REG_START 0x01 + +#define FAN_MIN_DETECT 366 /* Lowest detectable fanspeed */ + +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 *f71882fg_pdev = NULL; + +/* Super-I/O Function prototypes */ +static inline int superio_inb(int base, int reg); +static inline int superio_inw(int base, int reg); +static inline void superio_enter(int base); +static inline void superio_select(int base, int ld); +static inline void superio_exit(int base); + +struct f71882fg_data { + unsigned short addr; + struct device *hwmon_dev; + + struct mutex update_lock; + char valid; /* !=0 if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + unsigned long last_limits; /* In jiffies */ + + /* Register Values */ + u8 in[9]; + u8 in1_max; + u8 in_status; + u8 in_beep; + u16 fan[4]; + u8 fan_status; + u8 fan_beep; + u8 temp[3]; + u8 temp_ovt[3]; + u8 temp_high[3]; + u8 temp_hyst[3]; + u8 temp_type[3]; + u8 temp_status; + u8 temp_beep; + u8 temp_diode_open; +}; + +/* Sysfs in*/ +static ssize_t show_in(struct device *dev, struct device_attribute *devattr, + char *buf); +static ssize_t show_in_max(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_in_max(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_in_beep(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_in_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_in_alarm(struct device *dev, struct device_attribute + *devattr, char *buf); +/* Sysfs Fan */ +static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, + char *buf); +static ssize_t show_fan_beep(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_fan_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_fan_alarm(struct device *dev, struct device_attribute + *devattr, char *buf); +/* Sysfs Temp */ +static ssize_t show_temp(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t show_temp_max(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_temp_max(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_temp_crit(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_temp_crit(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t show_temp_type(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t show_temp_beep(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t store_temp_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count); +static ssize_t show_temp_alarm(struct device *dev, struct device_attribute + *devattr, char *buf); +static ssize_t show_temp_fault(struct device *dev, struct device_attribute + *devattr, char *buf); +/* Sysfs misc */ +static ssize_t show_name(struct device *dev, struct device_attribute *devattr, + char *buf); + +static int __devinit f71882fg_probe(struct platform_device * pdev); +static int __devexit f71882fg_remove(struct platform_device *pdev); +static int __init f71882fg_init(void); +static int __init f71882fg_find(int sioaddr, unsigned short *address); +static int __init f71882fg_device_add(unsigned short address); +static void __exit f71882fg_exit(void); + +static struct platform_driver f71882fg_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRVNAME, + }, + .probe = f71882fg_probe, + .remove = __devexit_p(f71882fg_remove), +}; + +static struct device_attribute f71882fg_dev_attr[] = +{ + __ATTR( name, S_IRUGO, show_name, NULL ), +}; + +static struct sensor_device_attribute f71882fg_in_temp_attr[] = +{ + SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0), + SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1), + SENSOR_ATTR(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max, 1), + SENSOR_ATTR(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep, 1), + SENSOR_ATTR(in1_alarm, S_IRUGO, show_in_alarm, NULL, 1), + SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2), + SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3), + SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4), + SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5), + SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6), + SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7), + SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8), + SENSOR_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0), + SENSOR_ATTR(temp1_max, S_IRUGO|S_IWUSR, show_temp_max, + store_temp_max, 0), + SENSOR_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 0), + SENSOR_ATTR(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit, + store_temp_crit, 0), + SENSOR_ATTR(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 0), + SENSOR_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0), + SENSOR_ATTR(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep, + store_temp_beep, 0), + SENSOR_ATTR(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0), + SENSOR_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0), + SENSOR_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1), + SENSOR_ATTR(temp2_max, S_IRUGO|S_IWUSR, show_temp_max, + store_temp_max, 1), + SENSOR_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 1), + SENSOR_ATTR(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit, + store_temp_crit, 1), + SENSOR_ATTR(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 1), + SENSOR_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1), + SENSOR_ATTR(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep, + store_temp_beep, 1), + SENSOR_ATTR(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 1), + SENSOR_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1), + SENSOR_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2), + SENSOR_ATTR(temp3_max, S_IRUGO|S_IWUSR, show_temp_max, + store_temp_max, 2), + SENSOR_ATTR(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst, + store_temp_max_hyst, 2), + SENSOR_ATTR(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit, + store_temp_crit, 2), + SENSOR_ATTR(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL, 2), + SENSOR_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2), + SENSOR_ATTR(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep, + store_temp_beep, 2), + SENSOR_ATTR(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 2), + SENSOR_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2) +}; + +static struct sensor_device_attribute f71882fg_fan_attr[] = +{ + SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0), + SENSOR_ATTR(fan1_beep, S_IRUGO|S_IWUSR, show_fan_beep, + store_fan_beep, 0), + SENSOR_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0), + SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1), + SENSOR_ATTR(fan2_beep, S_IRUGO|S_IWUSR, show_fan_beep, + store_fan_beep, 1), + SENSOR_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1), + SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2), + SENSOR_ATTR(fan3_beep, S_IRUGO|S_IWUSR, show_fan_beep, + store_fan_beep, 2), + SENSOR_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2), + SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3), + SENSOR_ATTR(fan4_beep, S_IRUGO|S_IWUSR, show_fan_beep, + store_fan_beep, 3), + SENSOR_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3) +}; + + +/* Super I/O functions */ +static inline int superio_inb(int base, int reg) +{ + outb(reg, base); + return inb(base + 1); +} + +static int superio_inw(int base, int reg) +{ + int val; + outb(reg++, base); + val = inb(base + 1) << 8; + outb(reg, base); + val |= inb(base + 1); + return val; +} + +static inline void superio_enter(int base) +{ + /* according to the datasheet the key must be send twice! */ + outb( SIO_UNLOCK_KEY, base); + outb( SIO_UNLOCK_KEY, base); +} + +static inline void superio_select( int base, int ld) +{ + outb(SIO_REG_LDSEL, base); + outb(ld, base + 1); +} + +static inline void superio_exit(int base) +{ + outb(SIO_LOCK_KEY, base); +} + +static inline u16 fan_from_reg(u16 reg) +{ + return reg ? (1500000 / reg) : 0; +} + +static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg) +{ + u8 val; + + outb(reg, data->addr + ADDR_REG_OFFSET); + val = inb(data->addr + DATA_REG_OFFSET); + + return val; +} + +static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg) +{ + u16 val; + + outb(reg++, data->addr + ADDR_REG_OFFSET); + val = inb(data->addr + DATA_REG_OFFSET) << 8; + outb(reg, data->addr + ADDR_REG_OFFSET); + val |= inb(data->addr + DATA_REG_OFFSET); + + return val; +} + +static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val) +{ + outb(reg, data->addr + ADDR_REG_OFFSET); + outb(val, data->addr + DATA_REG_OFFSET); +} + +static struct f71882fg_data *f71882fg_update_device(struct device * dev) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr, reg, reg2; + + mutex_lock(&data->update_lock); + + /* Update once every 60 seconds */ + if ( time_after(jiffies, data->last_limits + 60 * HZ ) || + !data->valid) { + data->in1_max = f71882fg_read8(data, F71882FG_REG_IN1_HIGH); + data->in_beep = f71882fg_read8(data, F71882FG_REG_IN_BEEP); + + /* Get High & boundary temps*/ + for (nr = 0; nr < 3; nr++) { + data->temp_ovt[nr] = f71882fg_read8(data, + F71882FG_REG_TEMP_OVT(nr)); + data->temp_high[nr] = f71882fg_read8(data, + F71882FG_REG_TEMP_HIGH(nr)); + } + + /* Have to hardcode hyst*/ + data->temp_hyst[0] = f71882fg_read8(data, + F71882FG_REG_TEMP_HYST1) >> 4; + /* Hyst temps 2 & 3 stored in same register */ + reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23); + data->temp_hyst[1] = reg & 0x0F; + data->temp_hyst[2] = reg >> 4; + + /* Have to hardcode type, because temp1 is special */ + reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE); + reg2 = f71882fg_read8(data, F71882FG_REG_PECI); + if ((reg2 & 0x03) == 0x01) + data->temp_type[0] = 6 /* PECI */; + else if ((reg2 & 0x03) == 0x02) + data->temp_type[0] = 5 /* AMDSI */; + else + data->temp_type[0] = (reg & 0x02) ? 2 : 4; + + data->temp_type[1] = (reg & 0x04) ? 2 : 4; + data->temp_type[2] = (reg & 0x08) ? 2 : 4; + + data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP); + + data->fan_beep = f71882fg_read8(data, F71882FG_REG_FAN_BEEP); + + data->last_limits = jiffies; + } + + /* Update every second */ + if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { + data->temp_status = f71882fg_read8(data, + F71882FG_REG_TEMP_STATUS); + data->temp_diode_open = f71882fg_read8(data, + F71882FG_REG_TEMP_DIODE_OPEN); + for (nr = 0; nr < 3; nr++) + data->temp[nr] = f71882fg_read8(data, + F71882FG_REG_TEMP(nr)); + + data->fan_status = f71882fg_read8(data, + F71882FG_REG_FAN_STATUS); + for (nr = 0; nr < 4; nr++) + data->fan[nr] = f71882fg_read16(data, + F71882FG_REG_FAN(nr)); + + data->in_status = f71882fg_read8(data, + F71882FG_REG_IN_STATUS); + for (nr = 0; nr < 9; nr++) + data->in[nr] = f71882fg_read8(data, + F71882FG_REG_IN(nr)); + + data->last_updated = jiffies; + data->valid = 1; + } + + mutex_unlock(&data->update_lock); + + return data; +} + +/* Sysfs Interface */ +static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int speed = fan_from_reg(data->fan[nr]); + + if (speed == FAN_MIN_DETECT) + speed = 0; + + return sprintf(buf, "%d\n", speed); +} + +static ssize_t show_fan_beep(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->fan_beep & (1 << nr)) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t store_fan_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + if (val) + data->fan_beep |= 1 << nr; + else + data->fan_beep &= ~(1 << nr); + + f71882fg_write8(data, F71882FG_REG_FAN_BEEP, data->fan_beep); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_fan_alarm(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->fan_status & (1 << nr)) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t show_in(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", data->in[nr] * 8); +} + +static ssize_t show_in_max(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + + return sprintf(buf, "%d\n", data->in1_max * 8); +} + +static ssize_t store_in_max(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int val = simple_strtoul(buf, NULL, 10) / 8; + + if (val > 255) + val = 255; + + mutex_lock(&data->update_lock); + f71882fg_write8(data, F71882FG_REG_IN1_HIGH, val); + data->in1_max = val; + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_in_beep(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->in_beep & (1 << nr)) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t store_in_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + if (val) + data->in_beep |= 1 << nr; + else + data->in_beep &= ~(1 << nr); + + f71882fg_write8(data, F71882FG_REG_IN_BEEP, data->in_beep); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_in_alarm(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->in_status & (1 << nr)) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", data->temp[nr] * 1000); +} + +static ssize_t show_temp_max(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", data->temp_high[nr] * 1000); +} + +static ssize_t store_temp_max(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10) / 1000; + + if (val > 255) + val = 255; + + mutex_lock(&data->update_lock); + f71882fg_write8(data, F71882FG_REG_TEMP_HIGH(nr), val); + data->temp_high[nr] = val; + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_temp_max_hyst(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", + (data->temp_high[nr] - data->temp_hyst[nr]) * 1000); +} + +static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10) / 1000; + ssize_t ret = count; + + mutex_lock(&data->update_lock); + + /* convert abs to relative and check */ + val = data->temp_high[nr] - val; + if (val < 0 || val > 15) { + ret = -EINVAL; + goto store_temp_max_hyst_exit; + } + + data->temp_hyst[nr] = val; + + /* convert value to register contents */ + switch (nr) { + case 0: + val = val << 4; + break; + case 1: + val = val | (data->temp_hyst[2] << 4); + break; + case 2: + val = data->temp_hyst[1] | (val << 4); + break; + } + + f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 : + F71882FG_REG_TEMP_HYST1, val); + +store_temp_max_hyst_exit: + mutex_unlock(&data->update_lock); + return ret; +} + +static ssize_t show_temp_crit(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", data->temp_ovt[nr] * 1000); +} + +static ssize_t store_temp_crit(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10) / 1000; + + if (val > 255) + val = 255; + + mutex_lock(&data->update_lock); + f71882fg_write8(data, F71882FG_REG_TEMP_OVT(nr), val); + data->temp_ovt[nr] = val; + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_temp_crit_hyst(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", + (data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000); +} + +static ssize_t show_temp_type(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + return sprintf(buf, "%d\n", data->temp_type[nr]); +} + +static ssize_t show_temp_beep(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->temp_beep & (1 << (nr + 1))) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t store_temp_beep(struct device *dev, struct device_attribute + *devattr, const char *buf, size_t count) +{ + struct f71882fg_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(devattr)->index; + int val = simple_strtoul(buf, NULL, 10); + + mutex_lock(&data->update_lock); + if (val) + data->temp_beep |= 1 << (nr + 1); + else + data->temp_beep &= ~(1 << (nr + 1)); + + f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t show_temp_alarm(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->temp_status & (1 << (nr + 1))) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t show_temp_fault(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71882fg_data *data = f71882fg_update_device(dev); + int nr = to_sensor_dev_attr(devattr)->index; + + if (data->temp_diode_open & (1 << (nr + 1))) + return sprintf(buf, "1\n"); + else + return sprintf(buf, "0\n"); +} + +static ssize_t show_name(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + return sprintf(buf, DRVNAME "\n"); +} + + +static int __devinit f71882fg_probe(struct platform_device * pdev) +{ + struct f71882fg_data *data; + int err, i; + u8 start_reg; + + if (!(data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL))) + return -ENOMEM; + + data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start; + mutex_init(&data->update_lock); + platform_set_drvdata(pdev, data); + + /* Register sysfs interface files */ + for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) { + err = device_create_file(&pdev->dev, &f71882fg_dev_attr[i]); + if (err) + goto exit_unregister_sysfs; + } + + start_reg = f71882fg_read8(data, F71882FG_REG_START); + if (start_reg & 0x01) { + for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) { + err = device_create_file(&pdev->dev, + &f71882fg_in_temp_attr[i].dev_attr); + if (err) + goto exit_unregister_sysfs; + } + } + + if (start_reg & 0x02) { + for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) { + err = device_create_file(&pdev->dev, + &f71882fg_fan_attr[i].dev_attr); + if (err) + goto exit_unregister_sysfs; + } + } + + data->hwmon_dev = hwmon_device_register(&pdev->dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto exit_unregister_sysfs; + } + + return 0; + +exit_unregister_sysfs: + for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) + device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]); + + for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) + device_remove_file(&pdev->dev, + &f71882fg_in_temp_attr[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) + device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr); + + kfree(data); + + return err; +} + +static int __devexit f71882fg_remove(struct platform_device *pdev) +{ + int i; + struct f71882fg_data *data = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + hwmon_device_unregister(data->hwmon_dev); + + for (i = 0; i < ARRAY_SIZE(f71882fg_dev_attr); i++) + device_remove_file(&pdev->dev, &f71882fg_dev_attr[i]); + + for (i = 0; i < ARRAY_SIZE(f71882fg_in_temp_attr); i++) + device_remove_file(&pdev->dev, + &f71882fg_in_temp_attr[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(f71882fg_fan_attr); i++) + device_remove_file(&pdev->dev, &f71882fg_fan_attr[i].dev_attr); + + kfree(data); + + return 0; +} + +static int __init f71882fg_find(int sioaddr, unsigned short *address) +{ + int err = -ENODEV; + u16 devid; + u8 start_reg; + struct f71882fg_data data; + + superio_enter(sioaddr); + + devid = superio_inw(sioaddr, SIO_REG_MANID); + if (devid != SIO_FINTEK_ID) { + pr_debug(DRVNAME ": Not a Fintek device\n"); + goto exit; + } + + devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID); + if (devid != SIO_F71882_ID) { + printk(KERN_INFO DRVNAME ": Unsupported Fintek device\n"); + goto exit; + } + + superio_select(sioaddr, SIO_F71882FG_LD_HWM); + if (!(superio_inb(sioaddr, SIO_REG_ENABLE) & 0x01)) { + printk(KERN_WARNING DRVNAME ": Device not activated\n"); + goto exit; + } + + *address = superio_inw(sioaddr, SIO_REG_ADDR); + if (*address == 0) + { + printk(KERN_WARNING DRVNAME ": Base address not set\n"); + goto exit; + } + *address &= ~(REGION_LENGTH - 1); /* Ignore 3 LSB */ + + data.addr = *address; + start_reg = f71882fg_read8(&data, F71882FG_REG_START); + if (!(start_reg & 0x03)) { + printk(KERN_WARNING DRVNAME + ": Hardware monitoring not activated\n"); + goto exit; + } + + err = 0; + printk(KERN_INFO DRVNAME ": Found F71882FG chip at %#x, revision %d\n", + (unsigned int)*address, + (int)superio_inb(sioaddr, SIO_REG_DEVREV)); +exit: + superio_exit(sioaddr); + return err; +} + +static int __init f71882fg_device_add(unsigned short address) +{ + struct resource res = { + .start = address, + .end = address + REGION_LENGTH - 1, + .flags = IORESOURCE_IO, + }; + int err; + + f71882fg_pdev = platform_device_alloc(DRVNAME, address); + if (!f71882fg_pdev) + return -ENOMEM; + + res.name = f71882fg_pdev->name; + err = platform_device_add_resources(f71882fg_pdev, &res, 1); + if (err) { + printk(KERN_ERR DRVNAME ": Device resource addition failed\n"); + goto exit_device_put; + } + + err = platform_device_add(f71882fg_pdev); + if (err) { + printk(KERN_ERR DRVNAME ": Device addition failed\n"); + goto exit_device_put; + } + + return 0; + +exit_device_put: + platform_device_put(f71882fg_pdev); + + return err; +} + +static int __init f71882fg_init(void) +{ + int err = -ENODEV; + unsigned short address; + + if (f71882fg_find(0x2e, &address) && f71882fg_find(0x4e, &address)) + goto exit; + + if ((err = platform_driver_register(&f71882fg_driver))) + goto exit; + + if ((err = f71882fg_device_add(address))) + goto exit_driver; + + return 0; + +exit_driver: + platform_driver_unregister(&f71882fg_driver); +exit: + return err; +} + +static void __exit f71882fg_exit(void) +{ + platform_device_unregister(f71882fg_pdev); + platform_driver_unregister(&f71882fg_driver); +} + +MODULE_DESCRIPTION("F71882FG Hardware Monitoring Driver"); +MODULE_AUTHOR("Hans Edgington (hans@edgington.nl)"); +MODULE_LICENSE("GPL"); + +module_init(f71882fg_init); +module_exit(f71882fg_exit); 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