/* sis5595.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998, 1999 Frodo Looijaard , Kyösti Mälkki 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 #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. 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(sis5595); /* SiS southbridge has a LM78-like chip integrated on the same IC. This driver is a customized copy of lm78.c */ /* Many SIS5595 constants specified below */ /* Length of ISA address segment */ #define SIS5595_EXTENT 8 #define SIS5595_BASE_REG 0x68 #define SIS5595_ENABLE_REG 0x7B /* Where are the ISA address/data registers relative to the base address */ #define SIS5595_ADDR_REG_OFFSET 5 #define SIS5595_DATA_REG_OFFSET 6 /* The SIS5595 registers */ #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) #define SIS5595_REG_IN(nr) (0x20 + (nr)) #define SIS5595_REG_FAN_MIN(nr) (0x3a + (nr)) #define SIS5595_REG_FAN(nr) (0x27 + (nr)) #define SIS5595_REG_TEMP 0x27 #define SIS5595_REG_TEMP_OVER 0x39 #define SIS5595_REG_TEMP_HYST 0x3a #define SIS5595_REG_ALARM1 0x41 #define SIS5595_REG_FANDIV 0x47 #define SIS5595_REG_CONFIG 0x40 /* 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) (SENSORS_LIMIT((((val) * 10 + 8)/16),0,255)) #define IN_FROM_REG(val) (((val) * 16) / 10) 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))) #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-5)/10):\ ((val)+5)/10),0,255)) #define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10) #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. To keep them sane, we use the 'standard' translation as specified in the SIS5595 sheet. Use the config file to set better limits. */ #define SIS5595_INIT_IN_0 (((1200) * 10)/38) #define SIS5595_INIT_IN_1 (((500) * 100)/168) #define SIS5595_INIT_IN_2 330 #define SIS5595_INIT_IN_3 250 #define SIS5595_INIT_IN_PERCENTAGE 10 #define SIS5595_INIT_IN_MIN_0 \ (SIS5595_INIT_IN_0 - SIS5595_INIT_IN_0 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MAX_0 \ (SIS5595_INIT_IN_0 + SIS5595_INIT_IN_0 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MIN_1 \ (SIS5595_INIT_IN_1 - SIS5595_INIT_IN_1 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MAX_1 \ (SIS5595_INIT_IN_1 + SIS5595_INIT_IN_1 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MIN_2 \ (SIS5595_INIT_IN_2 - SIS5595_INIT_IN_2 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MAX_2 \ (SIS5595_INIT_IN_2 + SIS5595_INIT_IN_2 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MIN_3 \ (SIS5595_INIT_IN_3 - SIS5595_INIT_IN_3 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_IN_MAX_3 \ (SIS5595_INIT_IN_3 + SIS5595_INIT_IN_3 * SIS5595_INIT_IN_PERCENTAGE / 100) #define SIS5595_INIT_FAN_MIN_1 3000 #define SIS5595_INIT_FAN_MIN_2 3000 #define SIS5595_INIT_TEMP_OVER 600 #define SIS5595_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 SIS5595, we need to keep some data in memory. That data is pointed to by sis5595_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new sis5595 client is allocated. */ struct sis5595_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[4]; /* Register value */ u8 in_max[4]; /* Register value */ u8 in_min[4]; /* Register value */ u8 fan[2]; /* Register value */ u8 fan_min[2]; /* Register value */ u8 temp; /* Register value */ u8 temp_over; /* Register value */ u8 temp_hyst; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ u8 alarms; /* Register encoding, combined */ }; #ifdef MODULE static #else extern #endif int __init sensors_sis5595_init(void); static int __init sis5595_cleanup(void); static int sis5595_attach_adapter(struct i2c_adapter *adapter); static int sis5595_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int sis5595_detach_client(struct i2c_client *client); static int sis5595_command(struct i2c_client *client, unsigned int cmd, void *arg); static void sis5595_inc_use(struct i2c_client *client); static void sis5595_dec_use(struct i2c_client *client); static int sis5595_read_value(struct i2c_client *client, u8 register); static int sis5595_write_value(struct i2c_client *client, u8 register, u8 value); static void sis5595_update_client(struct i2c_client *client); static void sis5595_init_client(struct i2c_client *client); static int sis5595_find_sis(int *address); static void sis5595_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void sis5595_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void sis5595_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void sis5595_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void sis5595_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static int sis5595_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 sis5595_driver = { /* name */ "SiS 5595", /* id */ I2C_DRIVERID_SIS5595, /* flags */ I2C_DF_NOTIFY, /* attach_adapter */ &sis5595_attach_adapter, /* detach_client */ &sis5595_detach_client, /* command */ &sis5595_command, /* inc_use */ &sis5595_inc_use, /* dec_use */ &sis5595_dec_use }; /* Used by sis5595_init/cleanup */ static int __initdata sis5595_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected SIS5595. 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 sis5595_dir_table_template[] = { {SIS5595_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_in}, {SIS5595_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_in}, {SIS5595_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_in}, {SIS5595_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_in}, {SIS5595_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_fan}, {SIS5595_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_fan}, {SIS5595_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_temp}, {SIS5595_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_fan_div}, {SIS5595_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real, &sensors_sysctl_real, NULL, &sis5595_alarms}, {0} }; /* This is called when the module is loaded */ int sis5595_attach_adapter(struct i2c_adapter *adapter) { return sensors_detect(adapter, &addr_data, sis5595_detect); } /* Locate SiS bridge and correct base address for SIS5595 */ int sis5595_find_sis(int *address) { struct pci_dev *s_bridge; u16 val; char c; if (!pci_present()) return -ENODEV; if (!(s_bridge = pci_find_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, NULL))) return -ENODEV; if (PCIBIOS_SUCCESSFUL != pci_read_config_word(s_bridge, SIS5595_BASE_REG, &val)) return -ENODEV; *address = (val & 0xfff8); if(*address == 0) { printk("sis5595.o: Sensor base address uninitialized - upgrade BIOS?\n"); return -ENODEV; } if (PCIBIOS_SUCCESSFUL != pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &c)) return -ENODEV; if((c & 0x80) == 0) { printk("sis5595.o: Sensors not enabled - upgrade BIOS?\n"); return -ENODEV; } return 0; } int sis5595_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct sis5595_data *data; int err = 0; const char *type_name = ""; const char *client_name = ""; /* Make sure we are probing the ISA bus!! */ if (!i2c_is_isa_adapter(adapter)) { printk ("sis5595.o: sis5595_detect called for an I2C bus adapter?!?\n"); return 0; } if (check_region(address, SIS5595_EXTENT)) goto ERROR0; /* If this is the address as indicated by the SIS5595 chipset, we don't do any futher probing */ if ((kind < 0) && (address == normal_isa[0])) kind = 0; /* Probe whether there is anything available on this address. */ if (kind < 0) { #define REALLY_SLOW_IO /* We need the timeouts for at least some LM78-like chips. But only if we read 'undefined' registers. */ i = inb_p(address + 1); if (inb_p(address + 2) != i) goto ERROR0; if (inb_p(address + 3) != i) goto ERROR0; if (inb_p(address + 7) != i) goto ERROR0; #undef REALLY_SLOW_IO /* Let's just hope nothing breaks here */ i = inb_p(address + 5) & 0x7f; outb_p(~i & 0x7f, address + 5); if ((inb_p(address + 5) & 0x7f) != (~i & 0x7f)) { outb_p(i, address + 5); return 0; } } /* 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 sis5595_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct sis5595_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct sis5595_data *) (new_client + 1); new_client->addr = address; init_MUTEX(&data->lock); new_client->data = data; new_client->adapter = adapter; new_client->driver = &sis5595_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ if (kind < 0) { if (sis5595_read_value(new_client, SIS5595_REG_CONFIG) & 0x80) goto ERROR1; } /* Determine the chip type. */ if (kind <= 0) kind = sis5595; if (kind == sis5595) { type_name = "sis5595"; client_name = "SIS5595 chip"; } else { #ifdef DEBUG printk("sis5595.o: Internal error: unknown kind (%d)?!?", kind); #endif goto ERROR1; } /* Reserve the ISA region */ request_region(address, SIS5595_EXTENT, type_name); /* Fill in the remaining client fields and put it into the global list */ strcpy(new_client->name, client_name); new_client->id = sis5595_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, sis5595_dir_table_template, THIS_MODULE)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; /* Initialize the SIS5595 chip */ sis5595_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: release_region(address, SIS5595_EXTENT); ERROR1: kfree(new_client); ERROR0: return err; } int sis5595_detach_client(struct i2c_client *client) { int err; sensors_deregister_entry(((struct sis5595_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("sis5595.o: Client deregistration failed, client not detached.\n"); return err; } release_region(client->addr, SIS5595_EXTENT); kfree(client); return 0; } /* No commands defined yet */ int sis5595_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } /* Nothing here yet */ void sis5595_inc_use(struct i2c_client *client) { #ifdef MODULE MOD_INC_USE_COUNT; #endif } /* Nothing here yet */ void sis5595_dec_use(struct i2c_client *client) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif } /* The SMBus locks itself, but ISA access must be locked explicitly! There are some ugly typecasts here, but the good news is - they should nowhere else be necessary! */ int sis5595_read_value(struct i2c_client *client, u8 reg) { int res; down(&(((struct sis5595_data *) (client->data))->lock)); outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET); up(&(((struct sis5595_data *) (client->data))->lock)); return res; } int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value) { down(&(((struct sis5595_data *) (client->data))->lock)); outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET); up(&(((struct sis5595_data *) (client->data))->lock)); return 0; } /* Called when we have found a new SIS5595. It should set limits, etc. */ void sis5595_init_client(struct i2c_client *client) { /* Reset all except Watchdog values and last conversion values This sets fan-divs to 2, among others */ sis5595_write_value(client, SIS5595_REG_CONFIG, 0x80); sis5595_write_value(client, SIS5595_REG_IN_MIN(0), IN_TO_REG(SIS5595_INIT_IN_MIN_0)); sis5595_write_value(client, SIS5595_REG_IN_MAX(0), IN_TO_REG(SIS5595_INIT_IN_MAX_0)); sis5595_write_value(client, SIS5595_REG_IN_MIN(1), IN_TO_REG(SIS5595_INIT_IN_MIN_1)); sis5595_write_value(client, SIS5595_REG_IN_MAX(1), IN_TO_REG(SIS5595_INIT_IN_MAX_1)); sis5595_write_value(client, SIS5595_REG_IN_MIN(2), IN_TO_REG(SIS5595_INIT_IN_MIN_2)); sis5595_write_value(client, SIS5595_REG_IN_MAX(2), IN_TO_REG(SIS5595_INIT_IN_MAX_2)); sis5595_write_value(client, SIS5595_REG_IN_MIN(3), IN_TO_REG(SIS5595_INIT_IN_MIN_3)); sis5595_write_value(client, SIS5595_REG_IN_MAX(3), IN_TO_REG(SIS5595_INIT_IN_MAX_3)); sis5595_write_value(client, SIS5595_REG_FAN_MIN(1), FAN_TO_REG(SIS5595_INIT_FAN_MIN_1, 2)); sis5595_write_value(client, SIS5595_REG_FAN_MIN(2), FAN_TO_REG(SIS5595_INIT_FAN_MIN_2, 2)); sis5595_write_value(client, SIS5595_REG_TEMP_OVER, TEMP_TO_REG(SIS5595_INIT_TEMP_OVER)); sis5595_write_value(client, SIS5595_REG_TEMP_HYST, TEMP_TO_REG(SIS5595_INIT_TEMP_HYST)); /* Start monitoring */ sis5595_write_value(client, SIS5595_REG_CONFIG, (sis5595_read_value(client, SIS5595_REG_CONFIG) & 0xf7) | 0x01); } void sis5595_update_client(struct i2c_client *client) { struct sis5595_data *data = client->data; int i; down(&data->update_lock); if ((jiffies - data->last_updated > HZ + HZ / 2) || (jiffies < data->last_updated) || !data->valid) { #ifdef DEBUG printk("Starting sis5595 update\n"); #endif for (i = 0; i <= 3; i++) { data->in[i] = sis5595_read_value(client, SIS5595_REG_IN(i)); data->in_min[i] = sis5595_read_value(client, SIS5595_REG_IN_MIN(i)); data->in_max[i] = sis5595_read_value(client, SIS5595_REG_IN_MAX(i)); } for (i = 1; i <= 2; i++) { data->fan[i - 1] = sis5595_read_value(client, SIS5595_REG_FAN(i)); data->fan_min[i - 1] = sis5595_read_value(client, SIS5595_REG_FAN_MIN(i)); } data->temp = sis5595_read_value(client, SIS5595_REG_TEMP); data->temp_over = sis5595_read_value(client, SIS5595_REG_TEMP_OVER); data->temp_hyst = sis5595_read_value(client, SIS5595_REG_TEMP_HYST); i = sis5595_read_value(client, SIS5595_REG_FANDIV); data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = i >> 6; data->alarms = sis5595_read_value(client, SIS5595_REG_ALARM1); 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 sis5595_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct sis5595_data *data = client->data; int nr = ctl_name - SIS5595_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { sis5595_update_client(client); results[0] = IN_FROM_REG(data->in_min[nr]); results[1] = IN_FROM_REG(data->in_max[nr]); results[2] = IN_FROM_REG(data->in[nr]); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->in_min[nr] = IN_TO_REG(results[0]); sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); } if (*nrels_mag >= 2) { data->in_max[nr] = IN_TO_REG(results[1]); sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); } } } void sis5595_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct sis5595_data *data = client->data; int nr = ctl_name - SIS5595_SYSCTL_FAN1 + 1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { sis5595_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])); sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr - 1]); } } } void sis5595_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct sis5595_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { sis5595_update_client(client); results[0] = TEMP_FROM_REG(data->temp_over); results[1] = TEMP_FROM_REG(data->temp_hyst); results[2] = TEMP_FROM_REG(data->temp); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_over = TEMP_TO_REG(results[0]); sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over); } if (*nrels_mag >= 2) { data->temp_hyst = TEMP_TO_REG(results[1]); sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst); } } } void sis5595_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct sis5595_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { sis5595_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void sis5595_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct sis5595_data *data = client->data; int old; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { sis5595_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 = sis5595_read_value(client, SIS5595_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); sis5595_write_value(client, SIS5595_REG_FANDIV, old); } } } int __init sensors_sis5595_init(void) { int res, addr; printk("sis5595.o version %s (%s)\n", LM_VERSION, LM_DATE); sis5595_initialized = 0; if (sis5595_find_sis(&addr)) { printk("sis5595.o: SIS5595 not detected, module not inserted.\n"); return -ENODEV; } normal_isa[0] = addr; if ((res = i2c_add_driver(&sis5595_driver))) { printk ("sis5595.o: Driver registration failed, module not inserted.\n"); sis5595_cleanup(); return res; } sis5595_initialized++; return 0; } int __init sis5595_cleanup(void) { int res; if (sis5595_initialized >= 1) { if ((res = i2c_del_driver(&sis5595_driver))) { printk ("sis5595.o: Driver deregistration failed, module not removed.\n"); return res; } sis5595_initialized--; } return 0; } EXPORT_NO_SYMBOLS; #ifdef MODULE MODULE_AUTHOR("Kyösti Mälkki "); MODULE_DESCRIPTION("SiS 5595 Sensor device"); int init_module(void) { return sensors_sis5595_init(); } int cleanup_module(void) { return sis5595_cleanup(); } #endif /* MODULE */