/* via686a.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998, 1999,2000 Frodo Looijaard , Kyösti Mälkki , Mark Studebaker , and Bob Dougherty (Some conversion-factor data were contributed by Jonathan Teh Soon Yew and Alex van Kaam .) 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 #include #include #include "version.h" #include "i2c-isa.h" #include "sensors.h" #include #ifndef PCI_DEVICE_ID_VIA_82C686_4 #define PCI_DEVICE_ID_VIA_82C686_4 0x3057 #endif #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)) #define init_MUTEX(s) do { *(s) = MUTEX; } while(0) #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,13) #define THIS_MODULE NULL #endif /* Addresses to scan. Note that we can't determine the ISA address until we have initialized our module */ static unsigned short normal_i2c[] = { SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { SENSORS_I2C_END }; static unsigned int normal_isa[] = { 0x0000, SENSORS_ISA_END }; static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; /* Insmod parameters */ SENSORS_INSMOD_1(via686a); /* The Via 686a southbridge has a LM78-like chip integrated on the same IC. This driver is a customized copy of lm78.c */ /* Many VIA686A constants specified below */ /* Length of ISA address segment */ #define VIA686A_EXTENT 0x80 #define VIA686A_BASE_REG 0x70 #define VIA686A_ENABLE_REG 0x74 /* The VIA686A registers */ /* ins numbered 0-4 */ #define VIA686A_REG_IN_MAX(nr) (0x2b + ((nr) * 2)) #define VIA686A_REG_IN_MIN(nr) (0x2c + ((nr) * 2)) #define VIA686A_REG_IN(nr) (0x22 + (nr)) /* fans numbered 1-2 */ #define VIA686A_REG_FAN_MIN(nr) (0x3a + (nr)) #define VIA686A_REG_FAN(nr) (0x28 + (nr)) //static const u8 regtemp[] = {0x20, 0x21, 0x19}; static const u8 regtemp[] = {0x20, 0x21, 0x1f}; static const u8 regover[] = {0x39, 0x3d, 0x1d}; static const u8 reghyst[] = {0x3a, 0x3e, 0x1e}; /* temps numbered 1-3 */ #define VIA686A_REG_TEMP(nr) (regtemp[(nr) - 1]) #define VIA686A_REG_TEMP_OVER(nr) (regover[(nr) - 1]) #define VIA686A_REG_TEMP_HYST(nr) (reghyst[(nr) - 1]) #define VIA686A_REG_TEMP_LOW1 0x4b #define VIA686A_REG_TEMP_LOW23 0x49 #define VIA686A_REG_ALARM1 0x41 #define VIA686A_REG_ALARM2 0x42 #define VIA686A_REG_FANDIV 0x47 #define VIA686A_REG_CONFIG 0x40 #define ROUND_INT(val) ((val)<0?((val)-0.5):((val)+0.5)) /* Conversions. Rounding and limit checking is only done on the TO_REG variants. */ /********* VOLTAGE CONVERSIONS (Bob Dougherty) ********/ // From HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew): // voltagefactor[0]=1.25/2628; // Vccp // voltagefactor[1]=1.25/2628; // +2.5V // voltagefactor[2]=1.67/2628; // +3.3V // voltagefactor[3]=2.6/2628; // +5V // voltagefactor[4]=6.3/2628; // +12V // in[i]=(data[i+2]*25.0+133)*voltagefactor[i]; // // These get us close, but they don't completely agree with what my BIOS says- // they are all a bit low. extern inline u8 IN_TO_REG(long val, int inNum) { // there's an extra /100 hidden in the conversion factors here if (inNum<=1) return (u8)SENSORS_LIMIT(ROUND_INT(0.04*(val/0.047565-133)),0,255); else if (inNum==2) return (u8)SENSORS_LIMIT(ROUND_INT(0.04*(val/0.063546-133)),0,255); else if (inNum==3) return (u8)SENSORS_LIMIT(ROUND_INT(0.04*(val/0.098935-133)),0,255); else return (u8)SENSORS_LIMIT(ROUND_INT(0.04*(val/0.23973-133)),0,255); } extern inline long IN_FROM_REG(u8 val, int inNum) { // use 2500.0 instead of 25.0 because we nneed to multiply val by 100 if (inNum<=1) return (long)ROUND_INT((2500.0*val+133)*0.00047565); else if (inNum==2) return (long)ROUND_INT((2500.0*val+133)*0.00063546); else if (inNum==3) return (long)ROUND_INT((2500.0*val+133)*0.00098935); else return (long)ROUND_INT((2500.0*val+133)*0.0023973); } extern inline u8 FAN_TO_REG(long rpm, int 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/((val)*(div))) /******** TEMP CONVERSIONS (Bob Dougherty) *********/ // linear fits from HWMon.cpp (Copyright 1998-2000 Jonathan Teh Soon Yew) // if(temp<169) // return double(temp)*0.427-32.08; // else if(temp>=169 && temp<=202) // return double(temp)*0.582-58.16; // else // return double(temp)*0.924-127.33; // // A fifth-order polynomial fits the unofficial data (provided by Alex van Kaam ) // a bit better. It also give more reasonable numbers on my machine (ie. they agree with what my // BIOS tells me). Here's the fifth-order fit to the 10-bit data: // temp = 6.500371171990e-09*val^5 +-4.006529810457e-06*val^4 +9.830610857874e-04*val^3 + // -1.187047495730e-01*val^2 +8.700574403605e+00*val +-2.836026823804e+02 // // Alas, neither work well because of precision limits in our math (?!?), so // I came up with a pretty good piecewise-2nd-order: // // For 8-bit readings: // 0-59: -0.00831398*val*val + 1.46882437*val - 63.66742250 // 60:179: 0.00056874*val*val + 0.29665581*val - 23.7538571 // 180-255: 0.01275451*val*val - 4.39034916*val + 428.14343750 // // For 10-bit readings: // 0-283: -0.00051962*val*val + 0.36720609*val - 63.6674225 // 284:763: 0.00004141*val*val + 0.06853503*val + -22.48959243 // 764-1023: 0.00087626*val*val + -1.23656143*val + 488.97355989 // // To convert the other way (temp to 8-bit reg val): // <0: 0.01864022*val*val + 2.12242751*val + 290.16637347 // 0-55: -0.00714790*val*val + 2.60844692*val + 70.67197155 // >55: -0.00991559*val*val + 2.48774551*val + 85.21011594 // Converting temps to register values extern inline u8 TEMP_TO_REG(long val) { val /= 10; if (val<0x00) // val<0 return (u8)SENSORS_LIMIT(ROUND_INT(0.01864022*val*val + 2.12242751*val + 72.54159337),0,255); else if (val<0x37) // val<55 return (u8)SENSORS_LIMIT(ROUND_INT(-0.00714790*val*val + 2.60844692*val + 70.67197155),0,255); else return (u8)SENSORS_LIMIT(ROUND_INT(-0.00991559*val*val + 2.48774551*val + 85.21011594),0,255); } /* for 8-bit temperature hyst and over registers */ extern inline long TEMP_FROM_REG(u8 val) { if (val<0x47) // val<71 return (long)ROUND_INT(10.0*(-0.00831398*val*val + 1.46882437*val - 63.66742250)); else if (val<0xbf) // val<191 return (long)ROUND_INT(10.0*(0.00056874*val*val + 0.29665581*val - 23.7538571)); else return (long)ROUND_INT(10.0*(0.01275451*val*val - 4.39034916*val + 428.14343750)); } /* for 10-bit temperature readings */ extern inline long TEMP_FROM_REG10(u16 val) { if (val<0x011c) // val<284 return (long)ROUND_INT(10.0*(-0.00051962*val*val + 0.36720609*val - 63.6674225)); else if (val<0x02fc) //val<764 return (long)ROUND_INT(10.0*(0.00004141*val*val + 0.06853503*val + -22.48959243)); else return (long)ROUND_INT(10.0*(0.00087626*val*val + -1.23656143*val + 488.97355989)); } #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 VIA686A_INIT_IN_0 200 #define VIA686A_INIT_IN_1 250 #define VIA686A_INIT_IN_2 330 #define VIA686A_INIT_IN_3 (((500) * 100)/168) #define VIA686A_INIT_IN_4 (((1200) * 10)/38) //#define VIA686A_INIT_IN_3 500 //#define VIA686A_INIT_IN_4 1200 #define VIA686A_INIT_IN_PERCENTAGE 10 #define VIA686A_INIT_IN_MIN_0 \ (VIA686A_INIT_IN_0 - VIA686A_INIT_IN_0 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MAX_0 \ (VIA686A_INIT_IN_0 + VIA686A_INIT_IN_0 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MIN_1 \ (VIA686A_INIT_IN_1 - VIA686A_INIT_IN_1 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MAX_1 \ (VIA686A_INIT_IN_1 + VIA686A_INIT_IN_1 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MIN_2 \ (VIA686A_INIT_IN_2 - VIA686A_INIT_IN_2 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MAX_2 \ (VIA686A_INIT_IN_2 + VIA686A_INIT_IN_2 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MIN_3 \ (VIA686A_INIT_IN_3 - VIA686A_INIT_IN_3 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MAX_3 \ (VIA686A_INIT_IN_3 + VIA686A_INIT_IN_3 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MIN_4 \ (VIA686A_INIT_IN_4 - VIA686A_INIT_IN_4 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_IN_MAX_4 \ (VIA686A_INIT_IN_4 + VIA686A_INIT_IN_4 * VIA686A_INIT_IN_PERCENTAGE / 100) #define VIA686A_INIT_FAN_MIN 3000 #define VIA686A_INIT_TEMP_OVER 600 #define VIA686A_INIT_TEMP_HYST 500 #ifdef MODULE extern int init_module(void); extern int cleanup_module(void); #endif /* MODULE */ /* This module may seem overly long and complicated. In fact, it is not so bad. Quite a lot of bookkeeping is done. A real driver can often cut some corners. */ /* For each registered VIA686A, we need to keep some data in memory. That data is pointed to by via686a_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new via686a client is allocated. */ struct via686a_data { struct semaphore lock; int sysctl_id; struct semaphore update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 in[5]; /* Register value */ u8 in_max[5]; /* Register value */ u8 in_min[5]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ u16 temp[3]; /* Register value 10 bit */ u8 temp_over[3]; /* Register value */ u8 temp_hyst[3]; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u16 alarms; /* Register encoding, combined */ }; #ifdef MODULE static #else extern #endif int __init sensors_via686a_init(void); static int __init via686a_cleanup(void); static int via686a_attach_adapter(struct i2c_adapter *adapter); static int via686a_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int via686a_detach_client(struct i2c_client *client); static int via686a_command(struct i2c_client *client, unsigned int cmd, void *arg); static void via686a_inc_use(struct i2c_client *client); static void via686a_dec_use(struct i2c_client *client); static int via686a_read_value(struct i2c_client *client, u8 register); static void via686a_write_value(struct i2c_client *client, u8 register, u8 value); static void via686a_update_client(struct i2c_client *client); static void via686a_init_client(struct i2c_client *client); static int via686a_find(int *address); static void via686a_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void via686a_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void via686a_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void via686a_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void via686a_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static int via686a_id = 0; /* 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 via686a_driver = { /* name */ "VIA 686A", /* id */ I2C_DRIVERID_VIA686A, /* flags */ I2C_DF_NOTIFY, /* attach_adapter */ &via686a_attach_adapter, /* detach_client */ &via686a_detach_client, /* command */ &via686a_command, /* inc_use */ &via686a_inc_use, /* dec_use */ &via686a_dec_use }; /* Used by via686a_init/cleanup */ static int __initdata via686a_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected VIA686A. 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 via686a_dir_table_template[] = { {VIA686A_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_in}, {VIA686A_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_in}, {VIA686A_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_in}, {VIA686A_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_in}, {VIA686A_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_in}, {VIA686A_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_fan}, {VIA686A_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_fan}, {VIA686A_SYSCTL_TEMP, "temp1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_temp}, {VIA686A_SYSCTL_TEMP2, "temp2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_temp}, {VIA686A_SYSCTL_TEMP3, "temp3", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_temp}, {VIA686A_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_fan_div}, {VIA686A_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &via686a_alarms}, {0} }; static inline int via686a_read_value(struct i2c_client *client, u8 reg) { return(inb_p(client->addr + reg)); } static inline void via686a_write_value(struct i2c_client *client, u8 reg, u8 value) { outb_p(value, client->addr + reg); } /* This is called when the module is loaded */ int via686a_attach_adapter(struct i2c_adapter *adapter) { return sensors_detect(adapter, &addr_data, via686a_detect); } /* Locate chip and get correct base address */ int via686a_find(int *address) { struct pci_dev *s_bridge; u16 val; if (!pci_present()) return -ENODEV; if (! (s_bridge = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, NULL))) return -ENODEV; if (PCIBIOS_SUCCESSFUL != pci_read_config_word(s_bridge, VIA686A_BASE_REG, &val)) return -ENODEV; *address = (val & 0xff80); if (PCIBIOS_SUCCESSFUL != pci_read_config_word(s_bridge, VIA686A_ENABLE_REG, &val)) return -ENODEV; if((*address == 0) || !(val & 0x01)) { printk("via686a.o: sensors not enabled - upgrade BIOS?\n"); return -ENODEV; } return 0; } int via686a_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct via686a_data *data; int err = 0; const char *type_name = "via686a"; /* Make sure we are probing the ISA bus!! */ if (!i2c_is_isa_adapter(adapter)) { printk ("via686a.o: via686a_detect called for an I2C bus adapter?!?\n"); return 0; } if (check_region(address, VIA686A_EXTENT)) { printk("via686a.o: region 0x%x already in use!\n", address); err = -ENODEV; goto ERROR0; } if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct via686a_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct via686a_data *) (new_client + 1); new_client->addr = address; init_MUTEX(&data->lock); new_client->data = data; new_client->adapter = adapter; new_client->driver = &via686a_driver; new_client->flags = 0; /* Reserve the ISA region */ request_region(address, VIA686A_EXTENT, type_name); /* Fill in the remaining client fields and put into the global list */ strcpy(new_client->name, "Via 686A Integrated Sensors"); new_client->id = via686a_id++; data->valid = 0; init_MUTEX(&data->update_lock); /* 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((struct i2c_client *) new_client, type_name, via686a_dir_table_template, THIS_MODULE)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; /* Initialize the VIA686A chip */ via686a_init_client(new_client); return 0; ERROR4: i2c_detach_client(new_client); ERROR3: release_region(address, VIA686A_EXTENT); kfree(new_client); ERROR0: return err; } int via686a_detach_client(struct i2c_client *client) { int err; sensors_deregister_entry(((struct via686a_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("via686a.o: Client deregistration failed, client not detached.\n"); return err; } release_region(client->addr, VIA686A_EXTENT); kfree(client); return 0; } /* No commands defined yet */ int via686a_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } void via686a_inc_use(struct i2c_client *client) { MOD_INC_USE_COUNT; } void via686a_dec_use(struct i2c_client *client) { MOD_DEC_USE_COUNT; } /* Called when we have found a new VIA686A. Set limits, etc. */ void via686a_init_client(struct i2c_client *client) { int i; /* Reset the device */ via686a_write_value(client, VIA686A_REG_CONFIG, 0x80); via686a_write_value(client, VIA686A_REG_IN_MIN(0), IN_TO_REG(VIA686A_INIT_IN_MIN_0, 0)); via686a_write_value(client, VIA686A_REG_IN_MAX(0), IN_TO_REG(VIA686A_INIT_IN_MAX_0, 0)); via686a_write_value(client, VIA686A_REG_IN_MIN(1), IN_TO_REG(VIA686A_INIT_IN_MIN_1, 1)); via686a_write_value(client, VIA686A_REG_IN_MAX(1), IN_TO_REG(VIA686A_INIT_IN_MAX_1, 1)); via686a_write_value(client, VIA686A_REG_IN_MIN(2), IN_TO_REG(VIA686A_INIT_IN_MIN_2, 2)); via686a_write_value(client, VIA686A_REG_IN_MAX(2), IN_TO_REG(VIA686A_INIT_IN_MAX_2, 2)); via686a_write_value(client, VIA686A_REG_IN_MIN(3), IN_TO_REG(VIA686A_INIT_IN_MIN_3, 3)); via686a_write_value(client, VIA686A_REG_IN_MAX(3), IN_TO_REG(VIA686A_INIT_IN_MAX_3, 3)); via686a_write_value(client, VIA686A_REG_IN_MIN(4), IN_TO_REG(VIA686A_INIT_IN_MIN_4, 4)); via686a_write_value(client, VIA686A_REG_IN_MAX(4), IN_TO_REG(VIA686A_INIT_IN_MAX_4, 4)); via686a_write_value(client, VIA686A_REG_FAN_MIN(1), FAN_TO_REG(VIA686A_INIT_FAN_MIN, 2)); via686a_write_value(client, VIA686A_REG_FAN_MIN(2), FAN_TO_REG(VIA686A_INIT_FAN_MIN, 2)); for(i = 1; i < 3; i++) { via686a_write_value(client, VIA686A_REG_TEMP_OVER(i), TEMP_TO_REG(VIA686A_INIT_TEMP_OVER)); via686a_write_value(client, VIA686A_REG_TEMP_HYST(i), TEMP_TO_REG(VIA686A_INIT_TEMP_HYST)); } /* Start monitoring */ via686a_write_value(client, VIA686A_REG_CONFIG, 0x01); } void via686a_update_client(struct i2c_client *client) { struct via686a_data *data = client->data; int i; down(&data->update_lock); if ((jiffies - data->last_updated > HZ + HZ / 2) || (jiffies < data->last_updated) || !data->valid) { for (i = 0; i <= 4; i++) { data->in[i] = via686a_read_value(client, VIA686A_REG_IN(i)); data->in_min[i] = via686a_read_value(client, VIA686A_REG_IN_MIN(i)); data->in_max[i] = via686a_read_value(client, VIA686A_REG_IN_MAX(i)); } for (i = 1; i <= 2; i++) { data->fan[i - 1] = via686a_read_value(client, VIA686A_REG_FAN(i)); data->fan_min[i - 1] = via686a_read_value(client, VIA686A_REG_FAN_MIN(i)); } for (i = 1; i <= 3; i++) { data->temp[i - 1] = via686a_read_value(client, VIA686A_REG_TEMP(i)) << 2; data->temp_over[i - 1] = via686a_read_value(client, VIA686A_REG_TEMP_OVER(i)); data->temp_hyst[i - 1] = via686a_read_value(client, VIA686A_REG_TEMP_HYST(i)); } /* add in lower 2 bits */ data->temp[0] |= (via686a_read_value(client, VIA686A_REG_TEMP_LOW1) & 0xc0) >> 6; data->temp[1] |= (via686a_read_value(client, VIA686A_REG_TEMP_LOW23) & 0x30) >> 4; data->temp[2] |= (via686a_read_value(client, VIA686A_REG_TEMP_LOW23) & 0xc0) >> 6; i = via686a_read_value(client, VIA686A_REG_FANDIV); data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = i >> 6; data->alarms = via686a_read_value(client, VIA686A_REG_ALARM1) || (via686a_read_value(client, VIA686A_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 via686a_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct via686a_data *data = client->data; int nr = ctl_name - VIA686A_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { via686a_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); via686a_write_value(client, VIA686A_REG_IN_MIN(nr), data->in_min[nr]); } if (*nrels_mag >= 2) { data->in_max[nr] = IN_TO_REG(results[1], nr); via686a_write_value(client, VIA686A_REG_IN_MAX(nr), data->in_max[nr]); } } } void via686a_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct via686a_data *data = client->data; int nr = ctl_name - VIA686A_SYSCTL_FAN1 + 1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { via686a_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])); via686a_write_value(client, VIA686A_REG_FAN_MIN(nr), data->fan_min[nr - 1]); } } } void via686a_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct via686a_data *data = client->data; int nr = ctl_name - VIA686A_SYSCTL_TEMP; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { via686a_update_client(client); results[0] = TEMP_FROM_REG(data->temp_over[nr]); results[1] = TEMP_FROM_REG(data->temp_hyst[nr]); results[2] = TEMP_FROM_REG10(data->temp[nr]); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_over[nr] = TEMP_TO_REG(results[0]); via686a_write_value(client, VIA686A_REG_TEMP_OVER(nr), data->temp_over[nr]); } if (*nrels_mag >= 2) { data->temp_hyst[nr] = TEMP_TO_REG(results[1]); via686a_write_value(client, VIA686A_REG_TEMP_HYST(nr), data->temp_hyst[nr]); } } } void via686a_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct via686a_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { via686a_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void via686a_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct via686a_data *data = client->data; int old; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { via686a_update_client(client); results[0] = DIV_FROM_REG(data->fan_div[0]); results[1] = DIV_FROM_REG(data->fan_div[1]); *nrels_mag = 2; } else if (operation == SENSORS_PROC_REAL_WRITE) { old = via686a_read_value(client, VIA686A_REG_FANDIV); if (*nrels_mag >= 2) { data->fan_div[1] = DIV_TO_REG(results[1]); old = (old & 0x3f) | (data->fan_div[1] << 6); } if (*nrels_mag >= 1) { data->fan_div[0] = DIV_TO_REG(results[0]); old = (old & 0xcf) | (data->fan_div[0] << 4); via686a_write_value(client, VIA686A_REG_FANDIV, old); } } } int __init sensors_via686a_init(void) { int res, addr; printk("via686a.o version %s (%s)\n", LM_VERSION, LM_DATE); via686a_initialized = 0; if (via686a_find(&addr)) { printk("via686a.o: No Via 686A sensors found.\n"); return -ENODEV; } normal_isa[0] = addr; if ((res = i2c_add_driver(&via686a_driver))) { printk ("via686a.o: Driver registration failed.\n"); via686a_cleanup(); return res; } via686a_initialized++; return 0; } int __init via686a_cleanup(void) { int res; if (via686a_initialized >= 1) { if ((res = i2c_del_driver(&via686a_driver))) { printk("via686a.o: Driver deregistration failed.\n"); return res; } via686a_initialized--; } return 0; } EXPORT_NO_SYMBOLS; #ifdef MODULE MODULE_AUTHOR("Kyösti Mälkki , Mark Studebaker "); MODULE_DESCRIPTION("VIA 686A Sensor device"); int init_module(void) { return sensors_via686a_init(); } int cleanup_module(void) { return via686a_cleanup(); } #endif /* MODULE */