/* lm80.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998, 1999 Frodo Looijaard and Philip Edelbrock 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 #include #include #include #include #include #include #include #include "smbus.h" #include "version.h" #include "i2c-isa.h" #include "sensors.h" #include "i2c.h" #include "compat.h" /* Addresses to scan */ static unsigned short normal_i2c[] = {SENSORS_I2C_END}; static unsigned short normal_i2c_range[] = {0x20,0x2f,SENSORS_I2C_END}; static unsigned int normal_isa[] = {SENSORS_ISA_END}; static unsigned int normal_isa_range[] = {SENSORS_ISA_END}; /* Insmod parameters */ SENSORS_INSMOD_1(lm80); /* Many LM80 constants specified below */ /* The LM80 registers */ #define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2) #define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2) #define LM80_REG_IN(nr) (0x20 + (nr)) #define LM80_REG_FAN1_MIN 0x3c #define LM80_REG_FAN2_MIN 0x3d #define LM80_REG_FAN1 0x28 #define LM80_REG_FAN2 0x29 #define LM80_REG_TEMP 0x27 #define LM80_REG_TEMP_HOT_MAX 0x38 #define LM80_REG_TEMP_HOT_HYST 0x39 #define LM80_REG_TEMP_OS_MAX 0x3a #define LM80_REG_TEMP_OS_HYST 0x3b #define LM80_REG_CONFIG 0x00 #define LM80_REG_ALARM1 0x01 #define LM80_REG_ALARM2 0x02 #define LM80_REG_MASK1 0x03 #define LM80_REG_MASK2 0x04 #define LM80_REG_FANDIV 0x05 #define LM80_REG_RES 0x06 /* Conversions. Rounding and limit checking is only done on the TO_REG variants. Note that you should be a bit careful with which arguments these macros are called: arguments may be evaluated more than once. Fixing this is just not worth it. */ #define IN_TO_REG(val,nr) (SENSORS_LIMIT((val),0,255)) #define IN_FROM_REG(val,nr) (val) extern inline unsigned char FAN_TO_REG (unsigned rpm, unsigned div) { if (rpm == 0) return 255; rpm = SENSORS_LIMIT(rpm,1,1000000); return SENSORS_LIMIT((1350000 + rpm*div/2) / (rpm*div),1,254); } #define FAN_FROM_REG(val,div) ((val)==0?-1:\ (val)==255?0:1350000/((div)*(val))) extern inline long TEMP_FROM_REG(u16 temp) { long res; res = ((temp & 0xff00) >> 8) * 10000 + ((temp & 0x10) >> 4) * 5000 + ((temp & 0x20) >> 5) * 2500 + ((temp & 0x40) >> 6) * 1250 + ((temp & 0x80) >> 7) * 625; temp /= 100; if (temp >= 0x80 * 100) temp = - (0x100 * 100 - temp); return temp; } #define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*100) #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT(((val)<0?(((val)-50)/100):\ ((val)+50)/100), \ 0,255) #define ALARMS_FROM_REG(val) (val) #define DIV_FROM_REG(val) (1 << (val)) #define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1) /* Initial limits */ #define LM80_INIT_IN_0 190 #define LM80_INIT_IN_1 190 #define LM80_INIT_IN_2 190 #define LM80_INIT_IN_3 190 #define LM80_INIT_IN_4 190 #define LM80_INIT_IN_5 190 #define LM80_INIT_IN_6 190 #define LM80_INIT_IN_PERCENTAGE 10 #define LM80_INIT_IN_MIN_0 \ (LM80_INIT_IN_0 - LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_0 \ (LM80_INIT_IN_0 + LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_1 \ (LM80_INIT_IN_1 - LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_1 \ (LM80_INIT_IN_1 + LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_2 \ (LM80_INIT_IN_2 - LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_2 \ (LM80_INIT_IN_2 + LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_3 \ (LM80_INIT_IN_3 - LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_3 \ (LM80_INIT_IN_3 + LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_4 \ (LM80_INIT_IN_4 - LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_4 \ (LM80_INIT_IN_4 + LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_5 \ (LM80_INIT_IN_5 - LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_5 \ (LM80_INIT_IN_5 + LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MIN_6 \ (LM80_INIT_IN_6 - LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_IN_MAX_6 \ (LM80_INIT_IN_6 + LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100) #define LM80_INIT_FAN_MIN_1 3000 #define LM80_INIT_FAN_MIN_2 3000 #define LM80_INIT_TEMP_OS_MAX 600 #define LM80_INIT_TEMP_OS_HYST 500 #define LM80_INIT_TEMP_HOT_MAX 700 #define LM80_INIT_TEMP_HOT_HYST 600 #ifdef MODULE extern int init_module(void); extern int cleanup_module(void); #endif /* MODULE */ /* For each registered LM80, we need to keep some data in memory. That data is pointed to by lm80_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new lm80 client is allocated. */ struct lm80_data { int sysctl_id; struct semaphore update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 in[7]; /* Register value */ u8 in_max[7]; /* Register value */ u8 in_min[7]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u16 temp; /* Register values, shifted right */ u8 temp_hot_max; /* Register value */ u8 temp_hot_hyst; /* Register value */ u8 temp_os_max; /* Register value */ u8 temp_os_hyst; /* Register value */ u16 alarms; /* Register encoding, combined */ }; static int lm80_init(void); static int lm80_cleanup(void); static int lm80_attach_adapter(struct i2c_adapter *adapter); static int lm80_detect(struct i2c_adapter *adapter, int address, int kind); static int lm80_detach_client(struct i2c_client *client); static int lm80_command(struct i2c_client *client, unsigned int cmd, void *arg); static void lm80_inc_use (struct i2c_client *client); static void lm80_dec_use (struct i2c_client *client); static int lm80_read_value(struct i2c_client *client, u8 register); static int lm80_write_value(struct i2c_client *client, u8 register, u8 value); static void lm80_update_client(struct i2c_client *client); static void lm80_init_client(struct i2c_client *client); static void lm80_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void lm80_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void lm80_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void lm80_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void lm80_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); /* I choose here for semi-static LM80 allocation. Complete dynamic allocation could also be used; the code needed for this would probably take more memory than the datastructure takes now. */ #define MAX_LM80_NR 4 static struct i2c_client *lm80_list[MAX_LM80_NR]; /* The driver. I choose to use type i2c_driver, as at is identical to both smbus_driver and isa_driver, and clients could be of either kind */ static struct i2c_driver lm80_driver = { /* name */ "LM80 sensor driver", /* id */ I2C_DRIVERID_LM80, /* flags */ DF_NOTIFY, /* attach_adapter */ &lm80_attach_adapter, /* detach_client */ &lm80_detach_client, /* command */ &lm80_command, /* inc_use */ &lm80_inc_use, /* dec_use */ &lm80_dec_use }; /* Used by lm80_init/cleanup */ static int lm80_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected LM80. This is just a template; though at first sight, you might think we could use a statically allocated list, we need some way to get back to the parent - which is done through one of the 'extra' fields which are initialized when a new copy is allocated. */ static ctl_table lm80_dir_table_template[] = { { LM80_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_in }, { LM80_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_fan }, { LM80_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_fan }, { LM80_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_temp }, { LM80_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_fan_div }, { LM80_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &lm80_alarms }, { 0 } }; int lm80_attach_adapter(struct i2c_adapter *adapter) { return sensors_detect(adapter,&addr_data,lm80_detect); } int lm80_detect(struct i2c_adapter *adapter, int address, int kind) { int i,cur; struct i2c_client *new_client; struct lm80_data *data; int err=0; const char *type_name,*client_name; /* Make sure we aren't probing the ISA bus!! This is just a safety check at this moment; sensors_detect really won't call us. */ #ifdef DEBUG if (i2c_is_isa_adapter(adapter)) { printk("lm80.o: lm80_detect called for an ISA bus adapter?!?\n"); return 0; } #endif /* Here, we have to do the address registration check for the I2C bus. But that is not yet implemented. */ /* 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 lm80_{read,write}_value. */ if (! (new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct lm80_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct lm80_data *) (((struct i2c_client *) new_client) + 1); new_client->addr = address; new_client->data = data; new_client->adapter = adapter; new_client->driver = &lm80_driver; /* Now, we do the remaining detection. It is lousy. */ if (lm80_read_value(new_client,LM80_REG_ALARM2) & 0xc0) goto ERROR1; for (i = 0x2a; i <= 0x3d; i++) { cur = smbus_read_byte_data(adapter,address,i); if ((smbus_read_byte_data(adapter,address,i+0x40) != cur) || (smbus_read_byte_data(adapter,address,i+0x80) != cur) || (smbus_read_byte_data(adapter,address,i+0xc0) != cur)) goto ERROR1; } /* Determine the chip type - only one kind supported! */ if (kind <= 0) kind = lm80; if (kind == lm80) { type_name = "lm80"; client_name = "LM80 chip"; } else { #ifdef DEBUG printk("lm80.o: Internal error: unknown kind (%d)?!?",kind); #endif goto ERROR1; } /* Fill in the remaining client fields and put it into the global list */ strcpy(new_client->name,client_name); /* Find a place in our global list */ for (i = 0; i < MAX_LM80_NR; i++) if (! lm80_list[i]) break; if (i == MAX_LM80_NR) { err = -ENOMEM; printk("lm80.o: No empty slots left, recompile and heighten " "MAX_LM80_NR!\n"); goto ERROR2; } lm80_list[i] = new_client; new_client->id = i; data->valid = 0; data->update_lock = MUTEX; /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) goto ERROR3; /* Register a new directory entry with module sensors */ if ((i = sensors_register_entry(new_client,type_name, lm80_dir_table_template)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; lm80_init_client(new_client); return 0; /* OK, this is not exactly good programming practice, usually. But it is very code-efficient in this case. */ ERROR4: i2c_detach_client(new_client); ERROR3: for (i = 0; i < MAX_LM80_NR; i++) if (new_client == lm80_list[i]) lm80_list[i] = NULL; ERROR2: ERROR1: kfree(new_client); ERROR0: return err; } int lm80_detach_client(struct i2c_client *client) { int err,i; sensors_deregister_entry(((struct lm80_data *)(client->data))->sysctl_id); if ((err = i2c_detach_client(client))) { printk("lm80.o: Client deregistration failed, client not detached.\n"); return err; } for (i = 0; i < MAX_LM80_NR; i++) if (client == lm80_list[i]) break; if ((i == MAX_LM80_NR)) { printk("lm80.o: Client to detach not found.\n"); return -ENOENT; } lm80_list[i] = NULL; kfree(client); return 0; } /* No commands defined yet */ int lm80_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } void lm80_inc_use (struct i2c_client *client) { #ifdef MODULE MOD_INC_USE_COUNT; #endif } void lm80_dec_use (struct i2c_client *client) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif } int lm80_read_value(struct i2c_client *client, u8 reg) { return smbus_read_byte_data(client->adapter,client->addr, reg); } int lm80_write_value(struct i2c_client *client, u8 reg, u8 value) { return smbus_write_byte_data(client->adapter, client->addr, reg,value); } /* Called when we have found a new LM80. It should set limits, etc. */ void lm80_init_client(struct i2c_client *client) { /* Reset all except Watchdog values and last conversion values This sets fan-divs to 2, among others. This makes most other initializations unnecessary */ lm80_write_value(client,LM80_REG_CONFIG,0x80); /* Set 11-bit temperature resolution */ lm80_write_value(client,LM80_REG_RES,0x08); lm80_write_value(client,LM80_REG_IN_MIN(0),IN_TO_REG(LM80_INIT_IN_MIN_0,0)); lm80_write_value(client,LM80_REG_IN_MAX(0),IN_TO_REG(LM80_INIT_IN_MAX_0,0)); lm80_write_value(client,LM80_REG_IN_MIN(1),IN_TO_REG(LM80_INIT_IN_MIN_1,1)); lm80_write_value(client,LM80_REG_IN_MAX(1),IN_TO_REG(LM80_INIT_IN_MAX_1,1)); lm80_write_value(client,LM80_REG_IN_MIN(2),IN_TO_REG(LM80_INIT_IN_MIN_2,2)); lm80_write_value(client,LM80_REG_IN_MAX(2),IN_TO_REG(LM80_INIT_IN_MAX_2,2)); lm80_write_value(client,LM80_REG_IN_MIN(3),IN_TO_REG(LM80_INIT_IN_MIN_3,3)); lm80_write_value(client,LM80_REG_IN_MAX(3),IN_TO_REG(LM80_INIT_IN_MAX_3,3)); lm80_write_value(client,LM80_REG_IN_MIN(4),IN_TO_REG(LM80_INIT_IN_MIN_4,4)); lm80_write_value(client,LM80_REG_IN_MAX(4),IN_TO_REG(LM80_INIT_IN_MAX_4,4)); lm80_write_value(client,LM80_REG_IN_MIN(5),IN_TO_REG(LM80_INIT_IN_MIN_5,5)); lm80_write_value(client,LM80_REG_IN_MAX(5),IN_TO_REG(LM80_INIT_IN_MAX_5,5)); lm80_write_value(client,LM80_REG_IN_MIN(6),IN_TO_REG(LM80_INIT_IN_MIN_6,6)); lm80_write_value(client,LM80_REG_IN_MAX(6),IN_TO_REG(LM80_INIT_IN_MAX_6,6)); lm80_write_value(client,LM80_REG_FAN1_MIN,FAN_TO_REG(LM80_INIT_FAN_MIN_1,2)); lm80_write_value(client,LM80_REG_FAN2_MIN,FAN_TO_REG(LM80_INIT_FAN_MIN_2,2)); lm80_write_value(client,LM80_REG_TEMP_HOT_MAX, TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX)); lm80_write_value(client,LM80_REG_TEMP_HOT_HYST, TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST)); lm80_write_value(client,LM80_REG_TEMP_OS_MAX, TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX)); lm80_write_value(client,LM80_REG_TEMP_OS_HYST, TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST)); /* Start monitoring */ lm80_write_value(client,LM80_REG_CONFIG,0x01); } void lm80_update_client(struct i2c_client *client) { struct lm80_data *data = client->data; int i; down(&data->update_lock); if ((jiffies - data->last_updated > 2*HZ ) || (jiffies < data->last_updated) || ! data->valid) { #ifdef DEBUG printk("Starting lm80 update\n"); #endif for (i = 0; i <= 6; i++) { data->in[i] = lm80_read_value(client,LM80_REG_IN(i)); data->in_min[i] = lm80_read_value(client,LM80_REG_IN_MIN(i)); data->in_max[i] = lm80_read_value(client,LM80_REG_IN_MAX(i)); } data->fan[0] = lm80_read_value(client,LM80_REG_FAN1); data->fan_min[0] = lm80_read_value(client,LM80_REG_FAN1_MIN); data->fan[1] = lm80_read_value(client,LM80_REG_FAN2); data->fan_min[1] = lm80_read_value(client,LM80_REG_FAN2_MIN); data->temp = (lm80_read_value(client,LM80_REG_TEMP) << 8) | (lm80_read_value(client,LM80_REG_RES) & 0xf0); data->temp_os_max = lm80_read_value(client,LM80_REG_TEMP_OS_MAX); data->temp_os_hyst = lm80_read_value(client,LM80_REG_TEMP_OS_HYST); data->temp_hot_max = lm80_read_value(client,LM80_REG_TEMP_HOT_MAX); data->temp_hot_hyst = lm80_read_value(client,LM80_REG_TEMP_HOT_HYST); i = lm80_read_value(client,LM80_REG_FANDIV); data->fan_div[0] = (i >> 2) & 0x03; data->fan_div[1] = (i >> 4) & 0x03; data->alarms = lm80_read_value(client,LM80_REG_ALARM1) + (lm80_read_value(client,LM80_REG_ALARM2) << 8); data->last_updated = jiffies; data->valid = 1; } up(&data->update_lock); } /* The next few functions are the call-back functions of the /proc/sys and sysctl files. Which function is used is defined in the ctl_table in the extra1 field. Each function must return the magnitude (power of 10 to divide the date with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must put a maximum of *nrels elements in results reflecting the data of this file, and set *nrels to the number it actually put in it, if operation== SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE. Note that on SENSORS_PROC_REAL_READ, I do not check whether results is large enough (by checking the incoming value of *nrels). This is not very good practice, but as long as you put less than about 5 values in results, you can assume it is large enough. */ void lm80_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct lm80_data *data = client->data; int nr = ctl_name - LM80_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { lm80_update_client(client); results[0] = IN_FROM_REG(data->in_min[nr],nr); results[1] = IN_FROM_REG(data->in_max[nr],nr); results[2] = IN_FROM_REG(data->in[nr],nr); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->in_min[nr] = IN_TO_REG(results[0],nr); lm80_write_value(client,LM80_REG_IN_MIN(nr),data->in_min[nr]); } if (*nrels_mag >= 2) { data->in_max[nr] = IN_TO_REG(results[1],nr); lm80_write_value(client,LM80_REG_IN_MAX(nr),data->in_max[nr]); } } } void lm80_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct lm80_data *data = client->data; int nr = ctl_name - LM80_SYSCTL_FAN1 + 1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { lm80_update_client(client); results[0] = FAN_FROM_REG(data->fan_min[nr-1], DIV_FROM_REG(data->fan_div[nr-1])); results[1] = FAN_FROM_REG(data->fan[nr-1], DIV_FROM_REG(data->fan_div[nr-1])); *nrels_mag = 2; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->fan_min[nr-1] = FAN_TO_REG(results[0], DIV_FROM_REG(data->fan_div[nr-1])); lm80_write_value(client,nr==1?LM80_REG_FAN1_MIN:LM80_REG_FAN2_MIN, data->fan_min[nr-1]); } } } void lm80_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct lm80_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { lm80_update_client(client); results[0] = TEMP_LIMIT_FROM_REG(data->temp_hot_max); results[1] = TEMP_LIMIT_FROM_REG(data->temp_hot_hyst); results[2] = TEMP_LIMIT_FROM_REG(data->temp_os_max); results[3] = TEMP_LIMIT_FROM_REG(data->temp_os_hyst); results[4] = TEMP_FROM_REG(data->temp); *nrels_mag = 5; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_hot_max = TEMP_LIMIT_TO_REG(results[0]); lm80_write_value(client,LM80_REG_TEMP_HOT_MAX,data->temp_hot_max); } if (*nrels_mag >= 2) { data->temp_hot_hyst = TEMP_LIMIT_TO_REG(results[1]); lm80_write_value(client,LM80_REG_TEMP_HOT_HYST,data->temp_hot_hyst); } if (*nrels_mag >= 3) { data->temp_os_max = TEMP_LIMIT_TO_REG(results[2]); lm80_write_value(client,LM80_REG_TEMP_OS_MAX,data->temp_os_max); } if (*nrels_mag >= 4) { data->temp_os_hyst = TEMP_LIMIT_TO_REG(results[3]); lm80_write_value(client,LM80_REG_TEMP_OS_HYST,data->temp_os_hyst); } } } void lm80_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct lm80_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { lm80_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void lm80_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct lm80_data *data = client->data; int old; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { lm80_update_client(client); results[0] = DIV_FROM_REG(data->fan_div[0]); results[1] = DIV_FROM_REG(data->fan_div[1]); results[2] = 2; *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { old = lm80_read_value(client,LM80_REG_FANDIV); if (*nrels_mag >= 2) { data->fan_div[1] = DIV_TO_REG(results[1]); old = (old & 0xcf) | (data->fan_div[1] << 4); } if (*nrels_mag >= 1) { data->fan_div[0] = DIV_TO_REG(results[0]); old = (old & 0xf3) | (data->fan_div[0] << 2); lm80_write_value(client,LM80_REG_FANDIV,old); } } } int lm80_init(void) { int res; printk("lm80.o version %s (%s)\n",LM_VERSION,LM_DATE); lm80_initialized = 0; if ((res =i2c_add_driver(&lm80_driver))) { printk("lm80.o: Driver registration failed, module not inserted.\n"); lm80_cleanup(); return res; } lm80_initialized ++; return 0; } int lm80_cleanup(void) { int res; if (lm80_initialized >= 1) { if ((res = i2c_del_driver(&lm80_driver))) { printk("lm80.o: Driver deregistration failed, module not removed.\n"); return res; } lm80_initialized --; } return 0; } #ifdef MODULE MODULE_AUTHOR("Frodo Looijaard and Philip Edelbrock "); MODULE_DESCRIPTION("LM80 driver"); int init_module(void) { return lm80_init(); } int cleanup_module(void) { return lm80_cleanup(); } #endif /* MODULE */