/* LM87.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 2000 Frodo Looijaard Philip Edelbrock Stephen Rousset Dan Eaton 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 "version.h" #include "i2c-isa.h" #include "sensors.h" #include #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,18)) || \ (LINUX_VERSION_CODE == KERNEL_VERSION(2,3,0)) #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 */ static unsigned short normal_i2c[] = { SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { 0x2c, 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(LM87); /* The following is the calculation for the register offset * for the monitored items minimum and maximum locations. */ #define LM87_REG_IN_MAX(nr) (0x2b + (nr) * 2) #define LM87_REG_IN_MIN(nr) (0x2c + (nr) * 2) #define LM87_REG_IN(nr) (0x20 + (nr)) #define AIN1 0 #define VCCP1 1 #define VCCP2 5 /* Initial limits */ /* * LM87 register definition * */ /* The LM87 registers */ #define LM87_INT_TEMP_HI_LIMIT_LOCKABLE 0x13 #define LM87_EXT_TEMP_HI_LIMIT_LOCKABLE 0x14 #define LM87_REG_TEST 0x15 #define LM87_REG_CHANNEL_MODE 0x16 #define LM87_REG_INT_TEMP_HI_LIMIT 0x17 #define LM87_REG_EXT_TEMP_HI_LIMIT 0x18 #define LM87_REG_ANALOG_OUT 0x19 /* These are all read-only */ #define LM87_REG_2_5V_EXT_TEMP_2 0x20 /* front ambient for us */ #define LM87_REG_VCCP1 0x21 /* this will be CPU core voltage */ #define LM87_REG_3_3V 0x22 #define LM87_REG_5V 0x23 #define LM87_REG_12V 0x24 #define LM87_REG_VCCP2 0x25 #define LM87_REG_EXT_TEMP_1 0x26 /* CPU temp for us */ #define LM87_REG_INT_TEMP 0x27 /* LM87 temp. */ #define LM87_REG_FAN1_AIN1 0x28 /* this is AIN: 2.5V monitored */ #define LM87_REG_FAN2_AIN2 0x29 /* These are read/write */ #define LM87_REG_2_5V_EXT_TEMP_2_HIGH 0x2B #define LM87_REG_2_5V_EXT_TEMP_2_LOW 0x2C #define LM87_REG_VCCP1_HIGH 0x2D #define LM87_REG_VCCP1_LOW 0x2E #define LM87_REG_3_3V_HIGH 0x2F #define LM87_REG_3_3V_LOW 0x30 #define LM87_REG_5V_HIGH 0x31 #define LM87_REG_5V_LOW 0x32 #define LM87_REG_12V_HIGH 0x33 #define LM87_REG_12V_LOW 0x34 #define LM87_REG_VCCP2_HIGH 0x35 #define LM87_REG_VCCP2_LOW 0x36 #define LM87_REG_EXT_TEMP_1_HIGH 0x37 #define LM87_REG_EXT_TEMP_1_LOW 0x38 #define LM87_REG_INT_TEMP_HIGH 0x39 #define LM87_REG_INT_TEMP_LOW 0x3A #define LM87_REG_FAN1_AIN1_LIMIT 0x3B /* 2.5V high limit */ #define LM87_REG_FAN2_AIN2_LIMIT 0x3C #define LM87_REG_COMPANY_ID 0x3E #define LM87_REG_DIE_REV 0x3F #define LM87_REG_CONFIG 0x40 #define LM87_REG_INT1_STAT 0x41 #define LM87_REG_INT2_STAT 0x42 #define LM87_REG_INT1_MASK 0x43 #define LM87_REG_INT2_MASK 0x44 #define LM87_REG_CHASSIS_CLEAR 0x46 #define LM87_REG_VID_FAN_DIV 0x47 #define LM87_REG_VID4 0x49 #define LM87_REG_CONFIG_2 0x4A #define LM87_REG_INTRPT_STATUS_1_MIRROR 0x4C #define LM87_REG_INTRPT_STATUS_2_MIRROR 0x4D #define LM87_REG_SMBALERT_NUM_ENABLE 0x80 /* 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) & 0xff),0,255)) #define IN_FROM_REG(val,nr) (val) 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/((div)*(val))) #define TEMP_FROM_REG(temp) (temp * 10) #define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10) #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT(((val)<0?(((val)-5)/10):\ ((val)+5)/10),0,255) #if 0 #define TEMP_FROM_REG(temp) \ ((temp)<256?((((temp)&0x1fe) >> 1) * 10) + ((temp) & 1) * 5: \ ((((temp)&0x1fe) >> 1) -255) * 10 - ((temp) & 1) * 5) \ #define TEMP_LIMIT_FROM_REG(val) (val) #define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT((val),0,255) #endif #define ALARMS_FROM_REG(val) (val) #define DIV_FROM_REG(val) (1 << (val)) #define DIV_TO_REG(val) ((val)==1?0:((val)==8?3:((val)==4?2:1))) #if 0 #define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\ 205-(val)*5) #endif #define LM87_INIT_IN_0 190 #define LM87_INIT_IN_1 190 #define LM87_INIT_IN_2 190 #define LM87_INIT_IN_3 190 #define LM87_INIT_IN_4 190 #define LM87_INIT_IN_5 190 #define LM87_INIT_IN_PERCENTAGE 10 /********* 2.5V monitoring limits **********/ #define LM87_INIT_IN_MIN_0 \ (LM87_INIT_IN_0 - ((LM87_INIT_IN_0 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_0 \ (LM87_INIT_IN_0 + ((LM87_INIT_IN_0 * LM87_INIT_IN_PERCENTAGE) / 100)) /********* Vccp1 monitoring limits **********/ #define LM87_INIT_IN_MIN_1 \ (LM87_INIT_IN_1 - ((LM87_INIT_IN_1 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_1 \ (LM87_INIT_IN_1 + ((LM87_INIT_IN_1 * LM87_INIT_IN_PERCENTAGE) / 100)) /********* 3.3V monitoring limits **********/ #define LM87_INIT_IN_MIN_2 \ (LM87_INIT_IN_2 - ((LM87_INIT_IN_2 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_2 \ (LM87_INIT_IN_2 + ((LM87_INIT_IN_2 * LM87_INIT_IN_PERCENTAGE) / 100)) /********* 5V monitoring limits **********/ #define LM87_INIT_IN_MIN_3 \ (LM87_INIT_IN_3 - ((LM87_INIT_IN_3 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_3 \ (LM87_INIT_IN_3 + ((LM87_INIT_IN_3 * LM87_INIT_IN_PERCENTAGE) / 100)) /********* 12V monitoring limits **********/ #define LM87_INIT_IN_MIN_4 \ (LM87_INIT_IN_4 - ((LM87_INIT_IN_4 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_4 \ (LM87_INIT_IN_4 + ((LM87_INIT_IN_4 * LM87_INIT_IN_PERCENTAGE) / 100)) /********* Vccp2 monitoring limits **********/ #define LM87_INIT_IN_MIN_5 \ (LM87_INIT_IN_5 - ((LM87_INIT_IN_5 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_IN_MAX_5 \ (LM87_INIT_IN_5 + ((LM87_INIT_IN_5 * LM87_INIT_IN_PERCENTAGE) / 100)) #define LM87_INIT_FAN_MIN 3000 #define LM87_INIT_EXT_TEMP_MAX 600 #define LM87_INIT_EXT_TEMP_MIN 50 #define LM87_INIT_INT_TEMP_MAX 600 #define LM87_INIT_INT_TEMP_MIN 50 #ifdef MODULE extern int init_module(void); extern int cleanup_module(void); #endif /* MODULE */ /* For each registered LM87, we need to keep some data in memory. That data is pointed to by LM87_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new LM87 client is allocated. */ struct LM87_data { int sysctl_id; enum chips type; struct semaphore update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 in[6]; /* Register value */ u8 in_max[6]; /* Register value */ u8 in_min[6]; /* Register value */ u8 fan; /* Register value */ u8 fan_min; /* Register value */ u8 fan_div; /* Register encoding, shifted right */ int front_amb_temp; /* Temp, shifted right */ int cpu_temp; /* Temp, shifted right */ int int_temp; /* Temp, shifted right */ u8 cpu_temp_max; /* Register value */ u8 cpu_temp_min; /* Register value */ u8 front_amb_temp_max; /* Register value */ u8 front_amb_temp_min; /* Register value */ u8 int_temp_max; /* Register value */ u8 int_temp_min; /* Register value */ u16 alarms; /* Register encoding, combined */ u8 analog_out; /* Register value */ u8 vid; /* Register value combined */ }; #ifdef MODULE static #else extern #endif int __init sensors_LM87_init(void); static int __init LM87_cleanup(void); static int LM87_attach_adapter(struct i2c_adapter *adapter); static int LM87_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int LM87_detach_client(struct i2c_client *client); static int LM87_command(struct i2c_client *client, unsigned int cmd, void *arg); static void LM87_inc_use(struct i2c_client *client); static void LM87_dec_use(struct i2c_client *client); static int LM87_read_value(struct i2c_client *client, u8 register); static int LM87_write_value(struct i2c_client *client, u8 register, u8 value); static void LM87_update_client(struct i2c_client *client); static void LM87_init_client(struct i2c_client *client); static void LM87_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_analog_out(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void LM87_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); /* I choose here for semi-static LM87 allocation. Complete dynamic allocation could also be used; the code needed for this would probably take more memory than the datastructure takes now. */ static int LM87_id = 0; static struct i2c_driver LM87_driver = { /* name */ "LM87 sensor driver", /* id */ I2C_DRIVERID_LM87, /* flags */ I2C_DF_NOTIFY, /* attach_adapter */ &LM87_attach_adapter, /* detach_client */ &LM87_detach_client, /* command */ &LM87_command, /* inc_use */ &LM87_inc_use, /* dec_use */ &LM87_dec_use }; /* Used by LM87_init/cleanup */ static int __initdata LM87_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected LM87. 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 LM87_dir_table_template[] = { {LM87_SYSCTL_IN0, "2.5V", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_IN1, "cpu_volt", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_IN2, "3.3V", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_IN3, "5V", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_IN4, "12V", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_IN5, "Vccp2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_in}, {LM87_SYSCTL_FAN, "fan", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_fan}, {LM87_SYSCTL_FRNT_TEMP, "front_amb_temp", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_temp}, {LM87_SYSCTL_CPU_TEMP, "cpu_temp", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_temp}, {LM87_SYSCTL_INT_TEMP, "int_temp", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_temp}, {LM87_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_fan_div}, {LM87_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_alarms}, {LM87_SYSCTL_ANALOG_OUT, "analog_out", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_analog_out}, {LM87_SYSCTL_VID, "vid", NULL, 0, 0444, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &LM87_vid}, {0} }; int LM87_attach_adapter(struct i2c_adapter *adapter) { int error; struct i2c_client_address_data lm87_client_data; lm87_client_data.normal_i2c = addr_data.normal_i2c; lm87_client_data.normal_i2c_range = addr_data.normal_i2c_range; lm87_client_data.probe = addr_data.probe; lm87_client_data.probe_range = addr_data.probe_range; lm87_client_data.ignore = addr_data.ignore; lm87_client_data.ignore_range = addr_data.ignore_range; lm87_client_data.force = addr_data.forces->force; error = i2c_probe(adapter, &lm87_client_data, LM87_detect); sensors_detect(adapter, &addr_data, LM87_detect); return error; } static int LM87_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct LM87_data *data; int err = 0; const char *type_name = ""; const char *client_name = ""; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) goto ERROR0; /* 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 LM87_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct LM87_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct LM87_data *) (new_client + 1); new_client->addr = address; new_client->data = data; new_client->adapter = adapter; new_client->driver = &LM87_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ if (kind < 0) { if ((LM87_read_value(new_client, LM87_REG_CONFIG) & 0x80) != 0x00) goto ERROR1; } /* Fill in the remaining client fields and put it into the global list */ type_name = "LM87"; client_name = "LM87 chip"; strcpy(new_client->name, client_name); data->type = kind; new_client->id = LM87_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(new_client, type_name, LM87_dir_table_template, THIS_MODULE)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; /* Initialize the LM87 chip */ LM87_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: ERROR1: kfree(new_client); ERROR0: return err; } int LM87_detach_client(struct i2c_client *client) { int err; sensors_deregister_entry(((struct LM87_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("LM87.o: Client deregistration failed, client not detached.\n"); return err; } kfree(client); return 0; } /* No commands defined yet */ int LM87_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } void LM87_inc_use(struct i2c_client *client) { #ifdef MODULE MOD_INC_USE_COUNT; #endif } void LM87_dec_use(struct i2c_client *client) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif } int LM87_read_value(struct i2c_client *client, u8 reg) { return 0xFF & i2c_smbus_read_byte_data(client, reg); } int LM87_write_value(struct i2c_client *client, u8 reg, u8 value) { return i2c_smbus_write_byte_data(client, reg, value); } /* Called when we have found a new LM87. It should set limits, etc. */ void LM87_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 */ LM87_write_value(client, LM87_REG_CONFIG, 0x80); /* Setup Channel Mode register for configuration of monitoring * bit 0 - Configures Fan 1/AIN 1 input (1 = AIN) * bit 2 - Configures 2.5V/D2 input (1 = 2nd Therm.) */ LM87_write_value(client, LM87_REG_CHANNEL_MODE, 0x05); LM87_write_value(client, LM87_REG_IN_MIN(1), IN_TO_REG(LM87_INIT_IN_MIN_1, 1)); LM87_write_value(client, LM87_REG_IN_MAX(1), IN_TO_REG(LM87_INIT_IN_MAX_1, 1)); LM87_write_value(client, LM87_REG_IN_MIN(2), IN_TO_REG(LM87_INIT_IN_MIN_2, 2)); LM87_write_value(client, LM87_REG_IN_MAX(2), IN_TO_REG(LM87_INIT_IN_MAX_2, 2)); LM87_write_value(client, LM87_REG_IN_MIN(3), IN_TO_REG(LM87_INIT_IN_MIN_3, 3)); LM87_write_value(client, LM87_REG_IN_MAX(3), IN_TO_REG(LM87_INIT_IN_MAX_3, 3)); LM87_write_value(client, LM87_REG_IN_MIN(4), IN_TO_REG(LM87_INIT_IN_MIN_4, 4)); LM87_write_value(client, LM87_REG_IN_MAX(4), IN_TO_REG(LM87_INIT_IN_MAX_4, 4)); LM87_write_value(client, LM87_REG_IN_MIN(5), IN_TO_REG(LM87_INIT_IN_MIN_5, 5)); LM87_write_value(client, LM87_REG_IN_MAX(5), IN_TO_REG(LM87_INIT_IN_MAX_5, 5)); LM87_write_value(client, LM87_REG_EXT_TEMP_1_HIGH, TEMP_LIMIT_TO_REG(LM87_INIT_EXT_TEMP_MAX)); LM87_write_value(client, LM87_REG_EXT_TEMP_1_LOW, TEMP_LIMIT_TO_REG(LM87_INIT_EXT_TEMP_MIN)); LM87_write_value(client, LM87_REG_2_5V_EXT_TEMP_2_HIGH, TEMP_LIMIT_TO_REG(LM87_INIT_EXT_TEMP_MAX)); LM87_write_value(client, LM87_REG_2_5V_EXT_TEMP_2_LOW, TEMP_LIMIT_TO_REG(LM87_INIT_EXT_TEMP_MIN)); LM87_write_value(client, LM87_REG_INT_TEMP_HIGH, TEMP_LIMIT_TO_REG(LM87_INIT_INT_TEMP_MAX)); LM87_write_value(client, LM87_REG_INT_TEMP_LOW, TEMP_LIMIT_TO_REG(LM87_INIT_INT_TEMP_MIN)); LM87_write_value(client, LM87_REG_FAN1_AIN1_LIMIT, IN_TO_REG(LM87_INIT_IN_MAX_0, 0)); LM87_write_value(client, LM87_REG_FAN2_AIN2_LIMIT, FAN_TO_REG(LM87_INIT_FAN_MIN, 2)); /* Start monitoring */ LM87_write_value(client, LM87_REG_CONFIG, 0x01); } void LM87_update_client(struct i2c_client *client) { struct LM87_data *data = client->data; u8 i; down(&data->update_lock); if ((jiffies - data->last_updated > HZ) || /* 1 sec cache */ (jiffies < data->last_updated) || !data->valid) { #ifdef DEBUG printk("Starting LM87 update\n"); #endif for (i = 0; i <= 5; i++) { /* Since we are using AIN 1 as our 2.5V monitoring, need to * accomodate with a hardcode register address and we only get * to look at one threshold. */ if (i == 0) { data->in[i] = LM87_read_value(client, LM87_REG_FAN1_AIN1); data->in_min[i] = 0; data->in_max[i] = LM87_read_value(client, LM87_REG_FAN1_AIN1_LIMIT); } else { data->in[i] = LM87_read_value(client, LM87_REG_IN(i)); data->in_min[i] = LM87_read_value(client, LM87_REG_IN_MIN(i)); data->in_max[i] = LM87_read_value(client, LM87_REG_IN_MAX(i)); } } data->fan = LM87_read_value(client, LM87_REG_FAN2_AIN2); data->fan_min = LM87_read_value(client, LM87_REG_FAN2_AIN2_LIMIT); data->front_amb_temp = LM87_read_value(client, LM87_REG_2_5V_EXT_TEMP_2); data->cpu_temp = LM87_read_value(client, LM87_REG_EXT_TEMP_1); data->int_temp = LM87_read_value(client, LM87_REG_INT_TEMP); data->front_amb_temp_max = LM87_read_value(client, LM87_REG_2_5V_EXT_TEMP_2_HIGH); data->front_amb_temp_min = LM87_read_value(client, LM87_REG_2_5V_EXT_TEMP_2_LOW); data->cpu_temp_max = LM87_read_value(client, LM87_REG_EXT_TEMP_1_HIGH); data->cpu_temp_min = LM87_read_value(client, LM87_REG_EXT_TEMP_1_LOW); data->int_temp_max = LM87_read_value(client, LM87_REG_INT_TEMP_HIGH); data->int_temp_min = LM87_read_value(client, LM87_REG_INT_TEMP_LOW); i = LM87_read_value(client, LM87_REG_VID_FAN_DIV); data->fan_div = (i >> 4) & 0x03; data->vid = i & 0x0f; data->vid |= (LM87_read_value(client, LM87_REG_VID4) & 0x01) << 4; data->alarms = LM87_read_value(client, LM87_REG_INT1_STAT) + (LM87_read_value(client, LM87_REG_INT2_STAT) << 8); data->analog_out = LM87_read_value(client, LM87_REG_ANALOG_OUT); 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 LM87_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { /************************************************************ * These values represent 2.5V, Vccp1, 3.3V, 5V, 12V & Vccp2 * The 2.5V is 50% sampled for our application, so check * against 1.25V value. ************************************************************/ int scales[6] = { 260, 200, 344, 520, 1250, 260 }; struct LM87_data *data = client->data; int nr = ctl_name - LM87_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); results[0] = IN_FROM_REG(data->in_min[nr], nr) * scales[nr] / 192; results[1] = IN_FROM_REG(data->in_max[nr], nr) * scales[nr] / 192; if (nr == AIN1) { results[2] = ((data->in[nr] * 10) * 98) / 1000; } else if (nr == VCCP1 || nr == VCCP2) { results[2] = ((data->in[nr] * 10) * 141) / 1000; } else { results[2] = IN_FROM_REG(data->in[nr], nr) * scales[nr] / 192; } *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->in_min[nr] = IN_TO_REG((results[0] * 192) / scales[nr], nr); LM87_write_value(client, LM87_REG_IN_MIN(nr), data->in_min[nr]); } if (*nrels_mag >= 2) { data->in_max[nr] = IN_TO_REG((results[1] * 192) / scales[nr], nr); LM87_write_value(client, LM87_REG_IN_MAX(nr), data->in_max[nr]); } } } void LM87_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; int nr = ctl_name - LM87_SYSCTL_FAN + 1; /* not sure +1 needed */ if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); results[0] = FAN_FROM_REG(data->fan_min, DIV_FROM_REG(data->fan_div)); results[1] = FAN_FROM_REG(data->fan, DIV_FROM_REG(data->fan_div)); *nrels_mag = 2; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 0) { data->fan_min = FAN_TO_REG(results[0], DIV_FROM_REG (data->fan_div)); LM87_write_value(client, LM87_REG_FAN2_AIN2_LIMIT, data->fan_min); } } } void LM87_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); /* find out which temp. is being requested */ if (ctl_name == LM87_SYSCTL_FRNT_TEMP) { results[0] = TEMP_LIMIT_FROM_REG(data->front_amb_temp_max); results[1] = TEMP_LIMIT_FROM_REG(data->front_amb_temp_min); results[2] = TEMP_FROM_REG(data->front_amb_temp); } else if(ctl_name == LM87_SYSCTL_CPU_TEMP) { results[0] = TEMP_LIMIT_FROM_REG(data->cpu_temp_max); results[1] = TEMP_LIMIT_FROM_REG(data->cpu_temp_min); results[2] = TEMP_FROM_REG(data->cpu_temp); } else if(ctl_name == LM87_SYSCTL_INT_TEMP) { results[0] = TEMP_LIMIT_FROM_REG(data->int_temp_max); results[1] = TEMP_LIMIT_FROM_REG(data->int_temp_min); results[2] = TEMP_FROM_REG(data->int_temp); } *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { if (ctl_name == LM87_SYSCTL_FRNT_TEMP) { data->front_amb_temp_max = TEMP_LIMIT_TO_REG(results[0]); LM87_write_value(client, LM87_REG_2_5V_EXT_TEMP_2_HIGH, data->front_amb_temp_max); } if (ctl_name == LM87_SYSCTL_CPU_TEMP) { data->cpu_temp_max = TEMP_LIMIT_TO_REG(results[0]); LM87_write_value(client, LM87_REG_EXT_TEMP_1_HIGH, data->int_temp_max); } if (ctl_name == LM87_SYSCTL_INT_TEMP) { data->int_temp_max = TEMP_LIMIT_TO_REG(results[0]); LM87_write_value(client, LM87_REG_INT_TEMP_HIGH, data->int_temp_max); } } if (*nrels_mag >= 2) { if (ctl_name == LM87_SYSCTL_FRNT_TEMP) { data->front_amb_temp_min = TEMP_LIMIT_TO_REG(results[0]); LM87_write_value(client, LM87_REG_2_5V_EXT_TEMP_2_LOW, data->front_amb_temp_min); } if (ctl_name == LM87_SYSCTL_CPU_TEMP) { data->cpu_temp_min = TEMP_LIMIT_TO_REG(results[0]); LM87_write_value(client, LM87_REG_EXT_TEMP_1_LOW, data->int_temp_min); } if (ctl_name == LM87_SYSCTL_INT_TEMP) { data->int_temp_min = TEMP_LIMIT_TO_REG(results[1]); LM87_write_value(client, LM87_REG_INT_TEMP_LOW, data->int_temp_min); } } } } void LM87_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void LM87_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; int old; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); results[0] = DIV_FROM_REG(data->fan_div); *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { old = LM87_read_value(client, LM87_REG_VID_FAN_DIV); if (*nrels_mag >= 2) { data->fan_div = DIV_TO_REG(results[1]); old = (old & 0x3f) | (data->fan_div << 6); } if (*nrels_mag >= 1) { data->fan_div = DIV_TO_REG(results[0]); old = (old & 0xcf) | (data->fan_div << 4); LM87_write_value(client, LM87_REG_VID_FAN_DIV, old); } } } void LM87_analog_out(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); results[0] = data->analog_out; *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->analog_out = results[0]; LM87_write_value(client, LM87_REG_ANALOG_OUT, data->analog_out); } } } void LM87_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct LM87_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { LM87_update_client(client); if ((data->vid == 0x1f) || (data->vid == 0x0f)) { results[0] = 0; } else if (data->vid > 0x0f) { results[0] = (1275 - (((data->vid - 0x10) * 1000) * 0.025))/10; } else { results[0] = 200 - ((data->vid * 100) * 0.05); } *nrels_mag = 1; } } int __init sensors_LM87_init(void) { int res; printk("LM87.o version %s (%s)\n", LM_VERSION, LM_DATE); LM87_initialized = 0; if ((res = i2c_add_driver(&LM87_driver))) { printk ("LM87.o: Driver registration failed, module not inserted.\n"); LM87_cleanup(); return res; } LM87_initialized++; return 0; } int __init LM87_cleanup(void) { int res; if (LM87_initialized >= 1) { if ((res = i2c_del_driver(&LM87_driver))) { printk ("LM87.o: Driver deregistration failed, module not removed.\n"); return res; } LM87_initialized--; } return 0; } EXPORT_NO_SYMBOLS; #ifdef MODULE MODULE_AUTHOR ("Frodo Looijaard , Philip Edelbrock , and Stephen Rousset "); MODULE_DESCRIPTION("LM87 driver"); int init_module(void) { return sensors_LM87_init(); } int cleanup_module(void) { return LM87_cleanup(); } #endif /* MODULE */