/* fscpos.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 2001 Hermann Jung 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. */ /* fujitsu siemens poseidon chip, module based on lm80.c Copyright (c) 1998, 1999 Frodo Looijaard and Philip Edelbrock */ #include #include #include #include #include #include #include #include #include #include #include "version.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 #ifndef THIS_MODULE #define THIS_MODULE NULL #endif /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x73, SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { 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(fscpos); /* The FSCPOS registers */ /* chip identification */ #define FSCPOS_REG_IDENT_0 0x00 #define FSCPOS_REG_IDENT_1 0x01 #define FSCPOS_REG_IDENT_2 0x02 #define FSCPOS_REG_REVISION 0x03 /* global control and status */ #define FSCPOS_REG_EVENT_STATE 0x04 #define FSCPOS_REG_CONTROL 0x05 /* watchdog */ #define FSCPOS_REG_WDOG_PRESET 0x28 #define FSCPOS_REG_WDOG_STATE 0x23 #define FSCPOS_REG_WDOG_CONTROL 0x21 /* fan 0 */ #define FSCPOS_REG_FAN0_MIN 0x55 #define FSCPOS_REG_FAN0_ACT 0x0e #define FSCPOS_REG_FAN0_STATE 0x0d #define FSCPOS_REG_FAN0_RIPPLE 0x0f /* fan 1 */ #define FSCPOS_REG_FAN1_MIN 0x65 #define FSCPOS_REG_FAN1_ACT 0x6b #define FSCPOS_REG_FAN1_STATE 0x62 #define FSCPOS_REG_FAN1_RIPPLE 0x6f /* fan 2 */ /* min speed fan2 not supported */ #define FSCPOS_REG_FAN2_ACT 0xab #define FSCPOS_REG_FAN2_STATE 0xa2 #define FSCPOS_REG_FAN2_RIPPLE 0x0af /* voltage supervision */ #define FSCPOS_REG_VOLT_12 0x45 #define FSCPOS_REG_VOLT_5 0x42 #define FSCPOS_REG_VOLT_BATT 0x48 /* temperatures */ /* sensor 0 */ #define FSCPOS_REG_TEMP0_ACT 0x64 #define FSCPOS_REG_TEMP0_STATE 0x71 /* sensor 1 */ #define FSCPOS_REG_TEMP1_ACT 0x32 #define FSCPOS_REG_TEMP1_STATE 0x81 /* sensor 2 */ #define FSCPOS_REG_TEMP2_ACT 0x35 #define FSCPOS_REG_TEMP2_STATE 0x91 /* 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) /* Initial limits */ #ifdef MODULE extern int init_module(void); extern int cleanup_module(void); #endif /* MODULE */ /* For each registered FSCPOS, we need to keep some data in memory. That data is pointed to by fscpos_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new fscpos client is allocated. */ struct fscpos_data { int sysctl_id; struct semaphore update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 revision; /* revision of chip */ u8 global_event; /* global event status */ u8 global_control; /* global control register */ u8 watchdog[3]; /* watchdog */ u8 volt[3]; /* 12, 5, battery current */ u8 temp_act[3]; /* temperature */ u8 temp_status[3]; /* status of sensor */ u8 fan_act[3]; /* fans revolutions per second */ u8 fan_status[3]; /* fan status */ u8 fan_min[3]; /* fan min value for rps */ u8 fan_ripple[3]; /* divider for rps */ }; #ifdef MODULE static #else extern #endif int __init sensors_fscpos_init(void); static int __init fscpos_cleanup(void); static int fscpos_attach_adapter(struct i2c_adapter *adapter); static int fscpos_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int fscpos_detach_client(struct i2c_client *client); static int fscpos_command(struct i2c_client *client, unsigned int cmd, void *arg); static void fscpos_inc_use(struct i2c_client *client); static void fscpos_dec_use(struct i2c_client *client); static int fscpos_read_value(struct i2c_client *client, u8 register); static int fscpos_write_value(struct i2c_client *client, u8 register, u8 value); static void fscpos_update_client(struct i2c_client *client); static void fscpos_init_client(struct i2c_client *client); static void fscpos_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void fscpos_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void fscpos_fan_internal(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results, int nr, int reg_state, int reg_min, int res_ripple); static void fscpos_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void fscpos_volt(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void fscpos_wdog(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static int fscpos_id = 0; static struct i2c_driver fscpos_driver = { /* name */ "FSCPOS sensor driver", /* id */ I2C_DRIVERID_FSCPOS, /* flags */ I2C_DF_NOTIFY, /* attach_adapter */ &fscpos_attach_adapter, /* detach_client */ &fscpos_detach_client, /* command */ &fscpos_command, /* inc_use */ &fscpos_inc_use, /* dec_use */ &fscpos_dec_use }; /* Used by fscpos_init/cleanup */ static int __initdata fscpos_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected FSCPOS. 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 fscpos_dir_table_template[] = { {FSCPOS_SYSCTL_REV, "rev", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_in}, {FSCPOS_SYSCTL_EVENT, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_in}, {FSCPOS_SYSCTL_CONTROL, "control", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_in}, {FSCPOS_SYSCTL_TEMP0, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_temp}, {FSCPOS_SYSCTL_TEMP1, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_temp}, {FSCPOS_SYSCTL_TEMP2, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_temp}, {FSCPOS_SYSCTL_VOLT0, "in0", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_volt}, {FSCPOS_SYSCTL_VOLT1, "in1", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_volt}, {FSCPOS_SYSCTL_VOLT2, "in2", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_volt}, {FSCPOS_SYSCTL_FAN0, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_fan}, {FSCPOS_SYSCTL_FAN1, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_fan}, {FSCPOS_SYSCTL_FAN2, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_fan}, {FSCPOS_SYSCTL_WDOG, "wdog", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &fscpos_wdog}, {0} }; int fscpos_attach_adapter(struct i2c_adapter *adapter) { return i2c_detect(adapter, &addr_data, fscpos_detect); } int fscpos_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct fscpos_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; i2c_detect really won't call us. */ #ifdef DEBUG if (i2c_is_isa_adapter(adapter)) { printk ("fscpos.o: fscpos_detect called for an ISA bus adapter?!?\n"); return 0; } #endif 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 fscpos_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct fscpos_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct fscpos_data *) (new_client + 1); new_client->addr = address; new_client->data = data; new_client->adapter = adapter; new_client->driver = &fscpos_driver; new_client->flags = 0; /* Do the remaining detection unless force or force_fscpos parameter */ if (kind < 0) { if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_0) != 0x50) goto ERROR1; if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_1) != 0x45) goto ERROR1; if (fscpos_read_value(new_client, FSCPOS_REG_IDENT_2) != 0x47) goto ERROR1; } kind = fscpos; type_name = "fscpos"; client_name = "fsc poseidon chip"; /* Fill in the remaining client fields and put it into the global list */ strcpy(new_client->name, client_name); new_client->id = fscpos_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 = i2c_register_entry(new_client, type_name, fscpos_dir_table_template, THIS_MODULE)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; fscpos_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 fscpos_detach_client(struct i2c_client *client) { int err; i2c_deregister_entry(((struct fscpos_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("fscpos.o: Client deregistration failed, client not detached.\n"); return err; } kfree(client); return 0; } /* No commands defined yet */ int fscpos_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } void fscpos_inc_use(struct i2c_client *client) { #ifdef MODULE MOD_INC_USE_COUNT; #endif } void fscpos_dec_use(struct i2c_client *client) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif } int fscpos_read_value(struct i2c_client *client, u8 reg) { #ifdef DEBUG printk("fscpos: read reg 0x%02x\n",reg); #endif return i2c_smbus_read_byte_data(client, reg); } int fscpos_write_value(struct i2c_client *client, u8 reg, u8 value) { #ifdef DEBUG printk("fscpos: write reg 0x%02x, val 0x%02x\n",reg, value); #endif return i2c_smbus_write_byte_data(client, reg, value); } /* Called when we have found a new FSCPOS. It should set limits, etc. */ void fscpos_init_client(struct i2c_client *client) { struct fscpos_data *data = client->data; /* read revision from chip */ data->revision = fscpos_read_value(client,FSCPOS_REG_REVISION); /* setup missing fan2_min value */ data->fan_min[2] = 0xff; } void fscpos_update_client(struct i2c_client *client) { struct fscpos_data *data = client->data; down(&data->update_lock); if ((jiffies - data->last_updated > 2 * HZ) || (jiffies < data->last_updated) || !data->valid) { #ifdef DEBUG printk("Starting fscpos update\n"); #endif data->temp_act[0] = fscpos_read_value(client, FSCPOS_REG_TEMP0_ACT); data->temp_act[1] = fscpos_read_value(client, FSCPOS_REG_TEMP1_ACT); data->temp_act[2] = fscpos_read_value(client, FSCPOS_REG_TEMP2_ACT); data->temp_status[0] = fscpos_read_value(client, FSCPOS_REG_TEMP0_STATE); data->temp_status[1] = fscpos_read_value(client, FSCPOS_REG_TEMP1_STATE); data->temp_status[2] = fscpos_read_value(client, FSCPOS_REG_TEMP2_STATE); data->volt[0] = fscpos_read_value(client, FSCPOS_REG_VOLT_12); data->volt[1] = fscpos_read_value(client, FSCPOS_REG_VOLT_5); data->volt[2] = fscpos_read_value(client, FSCPOS_REG_VOLT_BATT); data->fan_act[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_ACT); data->fan_act[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_ACT); data->fan_act[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_ACT); data->fan_status[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_STATE); data->fan_status[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_STATE); data->fan_status[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_STATE); data->fan_min[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_MIN); data->fan_min[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_MIN); /* fan2_min is not supported */ data->fan_ripple[0] = fscpos_read_value(client, FSCPOS_REG_FAN0_RIPPLE); data->fan_ripple[1] = fscpos_read_value(client, FSCPOS_REG_FAN1_RIPPLE); data->fan_ripple[2] = fscpos_read_value(client, FSCPOS_REG_FAN2_RIPPLE); data->watchdog[0] = fscpos_read_value(client, FSCPOS_REG_WDOG_PRESET); data->watchdog[1] = fscpos_read_value(client, FSCPOS_REG_WDOG_STATE); data->watchdog[2] = fscpos_read_value(client, FSCPOS_REG_WDOG_CONTROL); data->global_event = fscpos_read_value(client, FSCPOS_REG_EVENT_STATE); 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 fscpos_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct fscpos_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { fscpos_update_client(client); switch(ctl_name) { case FSCPOS_SYSCTL_REV: results[0] = data->revision ; break; case FSCPOS_SYSCTL_EVENT: results[0] = data->global_event & 0x1f; break; case FSCPOS_SYSCTL_CONTROL: results[0] = data->global_control & 0x01; break; default: printk("fscpos: ctl_name %d not supported\n", ctl_name); *nrels_mag = 0; return; } *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { if((ctl_name == FSCPOS_SYSCTL_CONTROL) && (*nrels_mag >= 1)) { data->global_control = (results[0] & 0x01); printk("fscpos: writing 0x%02x to global_control\n", data->global_control); fscpos_write_value(client,FSCPOS_REG_CONTROL, data->global_control); } else printk("fscpos: writing to chip not supported\n"); } } #define TEMP_FROM_REG(val) (val-128) void fscpos_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct fscpos_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { fscpos_update_client(client); switch(ctl_name) { case FSCPOS_SYSCTL_TEMP0: results[0] = data->temp_status[0] & 0x03; results[1] = TEMP_FROM_REG(data->temp_act[0]); break; case FSCPOS_SYSCTL_TEMP1: results[0] = data->temp_status[1] & 0x03; results[1] = TEMP_FROM_REG(data->temp_act[1]); break; case FSCPOS_SYSCTL_TEMP2: results[0] = data->temp_status[2] & 0x03; results[1] = TEMP_FROM_REG(data->temp_act[2]); break; default: printk("fscpos: ctl_name %d not supported\n", ctl_name); *nrels_mag = 0; return; } *nrels_mag = 2; } else if (operation == SENSORS_PROC_REAL_WRITE) { if(*nrels_mag >= 1) { switch(ctl_name) { case FSCPOS_SYSCTL_TEMP0: data->temp_status[0] = (data->temp_status[0] & ~0x02) | (results[0] & 0x02); printk("fscpos: writing value 0x%02x " "to temp0_status\n", data->temp_status[0]); fscpos_write_value(client, FSCPOS_REG_TEMP0_STATE, data->temp_status[0] & 0x02); break; case FSCPOS_SYSCTL_TEMP1: data->temp_status[1] = (data->temp_status[1] & ~0x02) | (results[0] & 0x02); printk("fscpos: writing value 0x%02x to temp1_status\n", data->temp_status[1]); fscpos_write_value(client,FSCPOS_REG_TEMP1_STATE, data->temp_status[1] & 0x02); break; case FSCPOS_SYSCTL_TEMP2: data->temp_status[2] = (data->temp_status[2] & ~0x02) | (results[0] & 0x02); printk("fscpos: writing value 0x%02x to temp2_status\n", data->temp_status[2]); fscpos_write_value(client,FSCPOS_REG_TEMP2_STATE, data->temp_status[2] & 0x02); break; default: printk("fscpos: ctl_name %d not supported\n",ctl_name); } } else printk("fscpos: writing to chip not supported\n"); } } #define VOLT_FROM_REG(val,mult) (val*mult/255) void fscpos_volt(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct fscpos_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { fscpos_update_client(client); switch(ctl_name) { case FSCPOS_SYSCTL_VOLT0: results[0] = VOLT_FROM_REG(data->volt[0],1420); break; case FSCPOS_SYSCTL_VOLT1: results[0] = VOLT_FROM_REG(data->volt[1],660); break; case FSCPOS_SYSCTL_VOLT2: results[0] = VOLT_FROM_REG(data->volt[2],330); break; default: printk("fscpos: ctl_name %d not supported\n", ctl_name); *nrels_mag = 0; return; } *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { printk("fscpos: writing to chip not supported\n"); } } void fscpos_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { switch(ctl_name) { case FSCPOS_SYSCTL_FAN0: fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, 0,FSCPOS_REG_FAN0_STATE,FSCPOS_REG_FAN0_MIN, FSCPOS_REG_FAN0_RIPPLE); break; case FSCPOS_SYSCTL_FAN1: fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, 1,FSCPOS_REG_FAN1_STATE,FSCPOS_REG_FAN1_MIN, FSCPOS_REG_FAN1_RIPPLE); break; case FSCPOS_SYSCTL_FAN2: fscpos_fan_internal(client,operation,ctl_name,nrels_mag,results, 2,FSCPOS_REG_FAN2_STATE,0xff, FSCPOS_REG_FAN2_RIPPLE); break; default: printk("fscpos: illegal fan nr %d\n",ctl_name); } } #define RPM_FROM_REG(val) (val*60) void fscpos_fan_internal(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results, int nr, int reg_state, int reg_min, int reg_ripple ) { struct fscpos_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { fscpos_update_client(client); results[0] = data->fan_status[nr] & 0x04; results[1] = data->fan_min[nr]; results[2] = data->fan_ripple[nr] & 0x03; results[3] = RPM_FROM_REG(data->fan_act[nr]); *nrels_mag = 4; } else if (operation == SENSORS_PROC_REAL_WRITE) { if(*nrels_mag >= 1) { data->fan_status[nr] = results[0] & 0x04; printk("fscpos: writing value 0x%02x to fan%d_status\n", data->fan_status[nr],nr); fscpos_write_value(client,reg_state, data->fan_status[nr]); } if((*nrels_mag >= 2) && (nr < 2)) { /* minimal speed for fan2 not supported */ data->fan_min[nr] = results[1]; printk("fscpos: writing value 0x%02x to fan%d_min\n", data->fan_min[nr],nr); fscpos_write_value(client,reg_min, data->fan_min[nr]); } if(*nrels_mag >= 3) { if((results[2] & 0x03) == 0) { printk("fscpos: fan%d ripple 0 not allowed\n",nr); return; } data->fan_ripple[nr] = results[2] & 0x03; printk("fscpos: writing value 0x%02x to fan%d_ripple\n", data->fan_ripple[nr],nr); fscpos_write_value(client,reg_ripple, data->fan_ripple[nr]); } } } void fscpos_wdog(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct fscpos_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { fscpos_update_client(client); results[0] = data->watchdog[0] ; results[1] = data->watchdog[1] & 0x02; results[2] = data->watchdog[2] & 0xb0; *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->watchdog[0] = results[0] & 0xff; printk("fscpos: writing value 0x%02x to wdog_preset\n", data->watchdog[0]); fscpos_write_value(client,FSCPOS_REG_WDOG_PRESET, data->watchdog[0]); } if (*nrels_mag >= 2) { data->watchdog[1] = results[1] & 0x02; printk("fscpos: writing value 0x%02x to wdog_state\n", data->watchdog[1]); fscpos_write_value(client,FSCPOS_REG_WDOG_STATE, data->watchdog[1]); } if (*nrels_mag >= 3) { data->watchdog[2] = results[2] & 0xb0; printk("fscpos: writing value 0x%02x to wdog_control\n", data->watchdog[2]); fscpos_write_value(client,FSCPOS_REG_WDOG_CONTROL, data->watchdog[2]); } } } int __init sensors_fscpos_init(void) { int res; printk("fscpos.o version %s (%s)\n", LM_VERSION, LM_DATE); fscpos_initialized = 0; if ((res = i2c_add_driver(&fscpos_driver))) { printk ("fscpos.o: Driver registration failed, module not inserted.\n"); fscpos_cleanup(); return res; } fscpos_initialized++; return 0; } int __init fscpos_cleanup(void) { int res; if (fscpos_initialized >= 1) { if ((res = i2c_del_driver(&fscpos_driver))) { printk ("fscpos.o: Driver deregistration failed, module not removed.\n"); return res; } fscpos_initialized--; } return 0; } EXPORT_NO_SYMBOLS; #ifdef MODULE MODULE_AUTHOR ("Hermann Jung based on work from Frodo Looijaard and Philip Edelbrock "); MODULE_DESCRIPTION("fujitsu siemens poseidon chip driver"); int init_module(void) { return sensors_fscpos_init(); } int cleanup_module(void) { return fscpos_cleanup(); } #endif /* MODULE */