/* gl520sm.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>, Ky�sti M�lkki <kmalkki@cc.hut.fi> Copyright (c) 2005 Maarten Deprez <maartendeprez@users.sourceforge.net> 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> /* Type of the extra sensor */ static unsigned short extra_sensor_type; module_param(extra_sensor_type, ushort, 0); MODULE_PARM_DESC(extra_sensor_type, "Type of extra sensor (0=autodetect, 1=temperature, 2=voltage)"); /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; /* Insmod parameters */ I2C_CLIENT_INSMOD_1(gl520sm); /* Many GL520 constants specified below One of the inputs can be configured as either temp or voltage. That's why _TEMP2 and _IN4 access the same register */ /* The GL520 registers */ #define GL520_REG_CHIP_ID 0x00 #define GL520_REG_REVISION 0x01 #define GL520_REG_CONF 0x03 #define GL520_REG_MASK 0x11 #define GL520_REG_VID_INPUT 0x02 #define GL520_REG_IN0_INPUT 0x15 #define GL520_REG_IN0_LIMIT 0x0c #define GL520_REG_IN0_MIN GL520_REG_IN0_LIMIT #define GL520_REG_IN0_MAX GL520_REG_IN0_LIMIT #define GL520_REG_IN1_INPUT 0x14 #define GL520_REG_IN1_LIMIT 0x09 #define GL520_REG_IN1_MIN GL520_REG_IN1_LIMIT #define GL520_REG_IN1_MAX GL520_REG_IN1_LIMIT #define GL520_REG_IN2_INPUT 0x13 #define GL520_REG_IN2_LIMIT 0x0a #define GL520_REG_IN2_MIN GL520_REG_IN2_LIMIT #define GL520_REG_IN2_MAX GL520_REG_IN2_LIMIT #define GL520_REG_IN3_INPUT 0x0d #define GL520_REG_IN3_LIMIT 0x0b #define GL520_REG_IN3_MIN GL520_REG_IN3_LIMIT #define GL520_REG_IN3_MAX GL520_REG_IN3_LIMIT #define GL520_REG_IN4_INPUT 0x0e #define GL520_REG_IN4_MAX 0x17 #define GL520_REG_IN4_MIN 0x18 #define GL520_REG_TEMP1_INPUT 0x04 #define GL520_REG_TEMP1_MAX 0x05 #define GL520_REG_TEMP1_MAX_HYST 0x06 #define GL520_REG_TEMP2_INPUT 0x0e #define GL520_REG_TEMP2_MAX 0x17 #define GL520_REG_TEMP2_MAX_HYST 0x18 #define GL520_REG_FAN_INPUT 0x07 #define GL520_REG_FAN_MIN 0x08 #define GL520_REG_FAN_DIV 0x0f #define GL520_REG_FAN_OFF GL520_REG_FAN_DIV #define GL520_REG_ALARMS 0x12 #define GL520_REG_BEEP_MASK 0x10 #define GL520_REG_BEEP_ENABLE GL520_REG_CONF /* * Function declarations */ static int gl520_attach_adapter(struct i2c_adapter *adapter); static int gl520_detect(struct i2c_adapter *adapter, int address, int kind); static void gl520_init_client(struct i2c_client *client); static int gl520_detach_client(struct i2c_client *client); static int gl520_read_value(struct i2c_client *client, u8 reg); static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value); static struct gl520_data *gl520_update_device(struct device *dev); /* Driver data */ static struct i2c_driver gl520_driver = { .driver = { .name = "gl520sm", }, .id = I2C_DRIVERID_GL520, .attach_adapter = gl520_attach_adapter, .detach_client = gl520_detach_client, }; /* Client data */ struct gl520_data { struct i2c_client client; struct class_device *class_dev; struct mutex update_lock; char valid; /* zero until the following fields are valid */ unsigned long last_updated; /* in jiffies */ u8 vid; u8 vrm; u8 in_input[5]; /* [0] = VVD */ u8 in_min[5]; /* [0] = VDD */ u8 in_max[5]; /* [0] = VDD */ u8 fan_input[2]; u8 fan_min[2]; u8 fan_div[2]; u8 fan_off; u8 temp_input[2]; u8 temp_max[2]; u8 temp_max_hyst[2]; u8 alarms; u8 beep_enable; u8 beep_mask; u8 alarm_mask; u8 two_temps; }; /* * Sysfs stuff */ #define sysfs_r(type, n, item, reg) \ static ssize_t get_##type##item (struct gl520_data *, char *, int); \ static ssize_t get_##type##n##item (struct device *, struct device_attribute *attr, char *); \ static ssize_t get_##type##n##item (struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct gl520_data *data = gl520_update_device(dev); \ return get_##type##item(data, buf, (n)); \ } #define sysfs_w(type, n, item, reg) \ static ssize_t set_##type##item (struct i2c_client *, struct gl520_data *, const char *, size_t, int, int); \ static ssize_t set_##type##n##item (struct device *, struct device_attribute *attr, const char *, size_t); \ static ssize_t set_##type##n##item (struct device *dev, struct device_attribute *attr, const char *buf, size_t count) \ { \ struct i2c_client *client = to_i2c_client(dev); \ struct gl520_data *data = i2c_get_clientdata(client); \ return set_##type##item(client, data, buf, count, (n), reg); \ } #define sysfs_rw_n(type, n, item, reg) \ sysfs_r(type, n, item, reg) \ sysfs_w(type, n, item, reg) \ static DEVICE_ATTR(type##n##item, S_IRUGO | S_IWUSR, get_##type##n##item, set_##type##n##item); #define sysfs_ro_n(type, n, item, reg) \ sysfs_r(type, n, item, reg) \ static DEVICE_ATTR(type##n##item, S_IRUGO, get_##type##n##item, NULL); #define sysfs_rw(type, item, reg) \ sysfs_r(type, 0, item, reg) \ sysfs_w(type, 0, item, reg) \ static DEVICE_ATTR(type##item, S_IRUGO | S_IWUSR, get_##type##0##item, set_##type##0##item); #define sysfs_ro(type, item, reg) \ sysfs_r(type, 0, item, reg) \ static DEVICE_ATTR(type##item, S_IRUGO, get_##type##0##item, NULL); #define sysfs_vid(n) \ sysfs_ro_n(cpu, n, _vid, GL520_REG_VID_INPUT) #define device_create_file_vid(client, n) \ device_create_file(&client->dev, &dev_attr_cpu##n##_vid) #define sysfs_in(n) \ sysfs_ro_n(in, n, _input, GL520_REG_IN##n##INPUT) \ sysfs_rw_n(in, n, _min, GL520_REG_IN##n##_MIN) \ sysfs_rw_n(in, n, _max, GL520_REG_IN##n##_MAX) \ #define device_create_file_in(client, n) \ ({device_create_file(&client->dev, &dev_attr_in##n##_input); \ device_create_file(&client->dev, &dev_attr_in##n##_min); \ device_create_file(&client->dev, &dev_attr_in##n##_max);}) #define sysfs_fan(n) \ sysfs_ro_n(fan, n, _input, GL520_REG_FAN_INPUT) \ sysfs_rw_n(fan, n, _min, GL520_REG_FAN_MIN) \ sysfs_rw_n(fan, n, _div, GL520_REG_FAN_DIV) #define device_create_file_fan(client, n) \ ({device_create_file(&client->dev, &dev_attr_fan##n##_input); \ device_create_file(&client->dev, &dev_attr_fan##n##_min); \ device_create_file(&client->dev, &dev_attr_fan##n##_div);}) #define sysfs_fan_off(n) \ sysfs_rw_n(fan, n, _off, GL520_REG_FAN_OFF) \ #define device_create_file_fan_off(client, n) \ device_create_file(&client->dev, &dev_attr_fan##n##_off) #define sysfs_temp(n) \ sysfs_ro_n(temp, n, _input, GL520_REG_TEMP##n##_INPUT) \ sysfs_rw_n(temp, n, _max, GL520_REG_TEMP##n##_MAX) \ sysfs_rw_n(temp, n, _max_hyst, GL520_REG_TEMP##n##_MAX_HYST) #define device_create_file_temp(client, n) \ ({device_create_file(&client->dev, &dev_attr_temp##n##_input); \ device_create_file(&client->dev, &dev_attr_temp##n##_max); \ device_create_file(&client->dev, &dev_attr_temp##n##_max_hyst);}) #define sysfs_alarms() \ sysfs_ro(alarms, , GL520_REG_ALARMS) \ sysfs_rw(beep_enable, , GL520_REG_BEEP_ENABLE) \ sysfs_rw(beep_mask, , GL520_REG_BEEP_MASK) #define device_create_file_alarms(client) \ ({device_create_file(&client->dev, &dev_attr_alarms); \ device_create_file(&client->dev, &dev_attr_beep_enable); \ device_create_file(&client->dev, &dev_attr_beep_mask);}) sysfs_vid(0) sysfs_in(0) sysfs_in(1) sysfs_in(2) sysfs_in(3) sysfs_in(4) sysfs_fan(1) sysfs_fan(2) sysfs_fan_off(1) sysfs_temp(1) sysfs_temp(2) sysfs_alarms() static ssize_t get_cpu_vid(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%u\n", vid_from_reg(data->vid, data->vrm)); } #define VDD_FROM_REG(val) (((val)*95+2)/4) #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) #define IN_FROM_REG(val) ((val)*19) #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) static ssize_t get_in_input(struct gl520_data *data, char *buf, int n) { u8 r = data->in_input[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t get_in_min(struct gl520_data *data, char *buf, int n) { u8 r = data->in_min[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t get_in_max(struct gl520_data *data, char *buf, int n) { u8 r = data->in_max[n]; if (n == 0) return sprintf(buf, "%d\n", VDD_FROM_REG(r)); else return sprintf(buf, "%d\n", IN_FROM_REG(r)); } static ssize_t set_in_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { long v = simple_strtol(buf, NULL, 10); u8 r; mutex_lock(&data->update_lock); if (n == 0) r = VDD_TO_REG(v); else r = IN_TO_REG(v); data->in_min[n] = r; if (n < 4) gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r); else gl520_write_value(client, reg, r); mutex_unlock(&data->update_lock); return count; } static ssize_t set_in_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { long v = simple_strtol(buf, NULL, 10); u8 r; if (n == 0) r = VDD_TO_REG(v); else r = IN_TO_REG(v); mutex_lock(&data->update_lock); data->in_max[n] = r; if (n < 4) gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); else gl520_write_value(client, reg, r); mutex_unlock(&data->update_lock); return count; } #define DIV_FROM_REG(val) (1 << (val)) #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (480000/((val) << (div)))) #define FAN_TO_REG(val,div) ((val)<=0?0:SENSORS_LIMIT((480000 + ((val) << ((div)-1))) / ((val) << (div)), 1, 255)); static ssize_t get_fan_input(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_input[n - 1], data->fan_div[n - 1])); } static ssize_t get_fan_min(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[n - 1], data->fan_div[n - 1])); } static ssize_t get_fan_div(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[n - 1])); } static ssize_t get_fan_off(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", data->fan_off); } static ssize_t set_fan_min(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { unsigned long v = simple_strtoul(buf, NULL, 10); u8 r; mutex_lock(&data->update_lock); r = FAN_TO_REG(v, data->fan_div[n - 1]); data->fan_min[n - 1] = r; if (n == 1) gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff00) | (r << 8)); else gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xff) | r); data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); if (data->fan_min[n - 1] == 0) data->alarm_mask &= (n == 1) ? ~0x20 : ~0x40; else data->alarm_mask |= (n == 1) ? 0x20 : 0x40; data->beep_mask &= data->alarm_mask; gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); mutex_unlock(&data->update_lock); return count; } static ssize_t set_fan_div(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { unsigned long v = simple_strtoul(buf, NULL, 10); u8 r; switch (v) { case 1: r = 0; break; case 2: r = 1; break; case 4: r = 2; break; case 8: r = 3; break; default: dev_err(&client->dev, "fan_div value %ld not supported. Choose one of 1, 2, 4 or 8!\n", v); return -EINVAL; } mutex_lock(&data->update_lock); data->fan_div[n - 1] = r; if (n == 1) gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0xc0) | (r << 6)); else gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x30) | (r << 4)); mutex_unlock(&data->update_lock); return count; } static ssize_t set_fan_off(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { u8 r = simple_strtoul(buf, NULL, 10)?1:0; mutex_lock(&data->update_lock); data->fan_off = r; gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x0c) | (r << 2)); mutex_unlock(&data->update_lock); return count; } #define TEMP_FROM_REG(val) (((val) - 130) * 1000) #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0?(val)-500:(val)+500) / 1000)+130),0,255)) static ssize_t get_temp_input(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_input[n - 1])); } static ssize_t get_temp_max(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[n - 1])); } static ssize_t get_temp_max_hyst(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[n - 1])); } static ssize_t set_temp_max(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { long v = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_max[n - 1] = TEMP_TO_REG(v); gl520_write_value(client, reg, data->temp_max[n - 1]); mutex_unlock(&data->update_lock); return count; } static ssize_t set_temp_max_hyst(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { long v = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_max_hyst[n - 1] = TEMP_TO_REG(v); gl520_write_value(client, reg, data->temp_max_hyst[n - 1]); mutex_unlock(&data->update_lock); return count; } static ssize_t get_alarms(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", data->alarms); } static ssize_t get_beep_enable(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", data->beep_enable); } static ssize_t get_beep_mask(struct gl520_data *data, char *buf, int n) { return sprintf(buf, "%d\n", data->beep_mask); } static ssize_t set_beep_enable(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { u8 r = simple_strtoul(buf, NULL, 10)?0:1; mutex_lock(&data->update_lock); data->beep_enable = !r; gl520_write_value(client, reg, (gl520_read_value(client, reg) & ~0x04) | (r << 2)); mutex_unlock(&data->update_lock); return count; } static ssize_t set_beep_mask(struct i2c_client *client, struct gl520_data *data, const char *buf, size_t count, int n, int reg) { u8 r = simple_strtoul(buf, NULL, 10); mutex_lock(&data->update_lock); r &= data->alarm_mask; data->beep_mask = r; gl520_write_value(client, reg, r); mutex_unlock(&data->update_lock); return count; } /* * Real code */ static int gl520_attach_adapter(struct i2c_adapter *adapter) { if (!(adapter->class & I2C_CLASS_HWMON)) return 0; return i2c_probe(adapter, &addr_data, gl520_detect); } static int gl520_detect(struct i2c_adapter *adapter, int address, int kind) { struct i2c_client *new_client; struct gl520_data *data; int err = 0; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) goto exit; /* OK. For now, we presume we have a valid client. We now create the client structure, even though we cannot fill it completely yet. But it allows us to access gl520_{read,write}_value. */ if (!(data = kzalloc(sizeof(struct gl520_data), GFP_KERNEL))) { err = -ENOMEM; goto exit; } new_client = &data->client; i2c_set_clientdata(new_client, data); new_client->addr = address; new_client->adapter = adapter; new_client->driver = &gl520_driver; new_client->flags = 0; /* Determine the chip type. */ if (kind < 0) { if ((gl520_read_value(new_client, GL520_REG_CHIP_ID) != 0x20) || ((gl520_read_value(new_client, GL520_REG_REVISION) & 0x7f) != 0x00) || ((gl520_read_value(new_client, GL520_REG_CONF) & 0x80) != 0x00)) { dev_dbg(&new_client->dev, "Unknown chip type, skipping\n"); goto exit_free; } } /* Fill in the remaining client fields */ strlcpy(new_client->name, "gl520sm", I2C_NAME_SIZE); data->valid = 0; mutex_init(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) goto exit_free; /* Initialize the GL520SM chip */ gl520_init_client(new_client); /* Register sysfs hooks */ data->class_dev = hwmon_device_register(&new_client->dev); if (IS_ERR(data->class_dev)) { err = PTR_ERR(data->class_dev); goto exit_detach; } device_create_file_vid(new_client, 0); device_create_file_in(new_client, 0); device_create_file_in(new_client, 1); device_create_file_in(new_client, 2); device_create_file_in(new_client, 3); if (!data->two_temps) device_create_file_in(new_client, 4); device_create_file_fan(new_client, 1); device_create_file_fan(new_client, 2); device_create_file_fan_off(new_client, 1); device_create_file_temp(new_client, 1); if (data->two_temps) device_create_file_temp(new_client, 2); device_create_file_alarms(new_client); return 0; exit_detach: i2c_detach_client(new_client); exit_free: kfree(data); exit: return err; } /* Called when we have found a new GL520SM. */ static void gl520_init_client(struct i2c_client *client) { struct gl520_data *data = i2c_get_clientdata(client); u8 oldconf, conf; conf = oldconf = gl520_read_value(client, GL520_REG_CONF); data->alarm_mask = 0xff; data->vrm = vid_which_vrm(); if (extra_sensor_type == 1) conf &= ~0x10; else if (extra_sensor_type == 2) conf |= 0x10; data->two_temps = !(conf & 0x10); /* If IRQ# is disabled, we can safely force comparator mode */ if (!(conf & 0x20)) conf &= 0xf7; /* Enable monitoring if needed */ conf |= 0x40; if (conf != oldconf) gl520_write_value(client, GL520_REG_CONF, conf); gl520_update_device(&(client->dev)); if (data->fan_min[0] == 0) data->alarm_mask &= ~0x20; if (data->fan_min[1] == 0) data->alarm_mask &= ~0x40; data->beep_mask &= data->alarm_mask; gl520_write_value(client, GL520_REG_BEEP_MASK, data->beep_mask); } static int gl520_detach_client(struct i2c_client *client) { struct gl520_data *data = i2c_get_clientdata(client); int err; hwmon_device_unregister(data->class_dev); if ((err = i2c_detach_client(client))) return err; kfree(data); return 0; } /* Registers 0x07 to 0x0c are word-sized, others are byte-sized GL520 uses a high-byte first convention */ static int gl520_read_value(struct i2c_client *client, u8 reg) { if ((reg >= 0x07) && (reg <= 0x0c)) return swab16(i2c_smbus_read_word_data(client, reg)); else return i2c_smbus_read_byte_data(client, reg); } static int gl520_write_value(struct i2c_client *client, u8 reg, u16 value) { if ((reg >= 0x07) && (reg <= 0x0c)) return i2c_smbus_write_word_data(client, reg, swab16(value)); else return i2c_smbus_write_byte_data(client, reg, value); } static struct gl520_data *gl520_update_device(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct gl520_data *data = i2c_get_clientdata(client); int val; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { dev_dbg(&client->dev, "Starting gl520sm update\n"); data->alarms = gl520_read_value(client, GL520_REG_ALARMS); data->beep_mask = gl520_read_value(client, GL520_REG_BEEP_MASK); data->vid = gl520_read_value(client, GL520_REG_VID_INPUT) & 0x1f; val = gl520_read_value(client, GL520_REG_IN0_LIMIT); data->in_min[0] = val & 0xff; data->in_max[0] = (val >> 8) & 0xff; val = gl520_read_value(client, GL520_REG_IN1_LIMIT); data->in_min[1] = val & 0xff; data->in_max[1] = (val >> 8) & 0xff; val = gl520_read_value(client, GL520_REG_IN2_LIMIT); data->in_min[2] = val & 0xff; data->in_max[2] = (val >> 8) & 0xff; val = gl520_read_value(client, GL520_REG_IN3_LIMIT); data->in_min[3] = val & 0xff; data->in_max[3] = (val >> 8) & 0xff; val = gl520_read_value(client, GL520_REG_FAN_INPUT); data->fan_input[0] = (val >> 8) & 0xff; data->fan_input[1] = val & 0xff; val = gl520_read_value(client, GL520_REG_FAN_MIN); data->fan_min[0] = (val >> 8) & 0xff; data->fan_min[1] = val & 0xff; data->temp_input[0] = gl520_read_value(client, GL520_REG_TEMP1_INPUT); data->temp_max[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX); data->temp_max_hyst[0] = gl520_read_value(client, GL520_REG_TEMP1_MAX_HYST); val = gl520_read_value(client, GL520_REG_FAN_DIV); data->fan_div[0] = (val >> 6) & 0x03; data->fan_div[1] = (val >> 4) & 0x03; data->fan_off = (val >> 2) & 0x01; data->alarms &= data->alarm_mask; val = gl520_read_value(client, GL520_REG_CONF); data->beep_enable = !((val >> 2) & 1); data->in_input[0] = gl520_read_value(client, GL520_REG_IN0_INPUT); data->in_input[1] = gl520_read_value(client, GL520_REG_IN1_INPUT); data->in_input[2] = gl520_read_value(client, GL520_REG_IN2_INPUT); data->in_input[3] = gl520_read_value(client, GL520_REG_IN3_INPUT); /* Temp1 and Vin4 are the same input */ if (data->two_temps) { data->temp_input[1] = gl520_read_value(client, GL520_REG_TEMP2_INPUT); data->temp_max[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX); data->temp_max_hyst[1] = gl520_read_value(client, GL520_REG_TEMP2_MAX_HYST); } else { data->in_input[4] = gl520_read_value(client, GL520_REG_IN4_INPUT); data->in_min[4] = gl520_read_value(client, GL520_REG_IN4_MIN); data->in_max[4] = gl520_read_value(client, GL520_REG_IN4_MAX); } data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } static int __init sensors_gl520sm_init(void) { return i2c_add_driver(&gl520_driver); } static void __exit sensors_gl520sm_exit(void) { i2c_del_driver(&gl520_driver); } MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " "Ky�sti M�lkki <kmalkki@cc.hut.fi>, " "Maarten Deprez <maartendeprez@users.sourceforge.net>"); MODULE_DESCRIPTION("GL520SM driver"); MODULE_LICENSE("GPL"); module_init(sensors_gl520sm_init); module_exit(sensors_gl520sm_exit);