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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [hwmon/] [f71882fg.c] - Blame information for rev 78

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/***************************************************************************
 *   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 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);
 
static inline u16 fan_from_reg ( u16 reg );
 
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;
};
 
static u8 f71882fg_read8(struct f71882fg_data *data, u8 reg);
static u16 f71882fg_read16(struct f71882fg_data *data, u8 reg);
static void f71882fg_write8(struct f71882fg_data *data, u8 reg, u8 val);
 
/* 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) {
                printk(KERN_INFO DRVNAME ": Not a Fintek device\n");
                goto exit;
        }
 
        devid = 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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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [hwmon/] [f71882fg.c] - Blame information for rev 78

Line No.	Rev	Author	Line
1	62	marcus.erl	`/***************************************************************************`
2			`* Copyright (C) 2006 by Hans Edgington <hans@edgington.nl> *`
3			`* Copyright (C) 2007 by Hans de Goede <j.w.r.degoede@hhs.nl> *`
4			`* *`
5			`* This program is free software; you can redistribute it and/or modify *`
6			`* it under the terms of the GNU General Public License as published by *`
7			`* the Free Software Foundation; either version 2 of the License, or *`
8			`* (at your option) any later version. *`
9			`* *`
10			`* This program is distributed in the hope that it will be useful, *`
11			`* but WITHOUT ANY WARRANTY; without even the implied warranty of *`
12			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *`
13			`* GNU General Public License for more details. *`
14			`* *`
15			`* You should have received a copy of the GNU General Public License *`
16			`* along with this program; if not, write to the *`
17			`* Free Software Foundation, Inc., *`
18			`* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *`
19			`***************************************************************************/`
20
21			`#include <linux/module.h>`
22			`#include <linux/init.h>`
23			`#include <linux/slab.h>`
24			`#include <linux/jiffies.h>`
25			`#include <linux/platform_device.h>`
26			`#include <linux/hwmon.h>`
27			`#include <linux/hwmon-sysfs.h>`
28			`#include <linux/err.h>`
29			`#include <linux/mutex.h>`
30			`#include <asm/io.h>`
31
32			`#define DRVNAME "f71882fg"`
33
34			`#define SIO_F71882FG_LD_HWM 0x04 /* Hardware monitor logical device*/`
35			`#define SIO_UNLOCK_KEY 0x87 /* Key to enable Super-I/O */`
36			`#define SIO_LOCK_KEY 0xAA /* Key to diasble Super-I/O */`
37
38			`#define SIO_REG_LDSEL 0x07 /* Logical device select */`
39			`#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */`
40			`#define SIO_REG_DEVREV 0x22 /* Device revision */`