/* adm9240.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1999 Frodo Looijaard and Philip Edelbrock This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* Supports ADM9240, DS1780, and LM81. See doc/chips/adm9240 for details */ /* A couple notes about the ADM9240: * It claims to be 'LM7x' register compatible. This must be in reference to only the LM78, because it is missing stuff to emulate LM75's as well. (like the Winbond W83781 does) * This driver was written from rev. 0 of the PDF, but it seems well written and complete (unlike the W83781 which is horrible and has supposidly gone through a few revisions.. rev 0 of that one must have been in crayon on construction paper...) * All analog inputs can range from 0 to 2.5, eventhough some inputs are marked as being 5V, 12V, etc. I don't have any real voltages going into my prototype, so I'm not sure that things are computed right, but at least the limits seem to be working OK. * Another curiousity is that the fan_div seems to be read-only. I.e., any written value to it doesn't seem to make any difference. The fan_div seems to be 'stuck' at 2 (which isn't a bad value in most cases). --Phil */ #include #include #include #include #include #include #include #include #include #include #define LM_DATE "20011118" #define LM_VERSION "2.6.2" #include #include #ifdef MODULE_LICENSE MODULE_LICENSE("GPL"); #endif #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[] = { 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_3(adm9240, ds1780, lm81); /* Many ADM9240 constants specified below */ #define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2) #define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2) #define ADM9240_REG_IN(nr) (0x20 + (nr)) /* The ADM9240 registers */ #define ADM9240_REG_TEST 0x15 #define ADM9240_REG_ANALOG_OUT 0x19 /* These are all read-only */ #define ADM9240_REG_2_5V 0x20 #define ADM9240_REG_VCCP1 0x21 #define ADM9240_REG_3_3V 0x22 #define ADM9240_REG_5V 0x23 #define ADM9240_REG_12V 0x24 #define ADM9240_REG_VCCP2 0x25 #define ADM9240_REG_TEMP 0x27 #define ADM9240_REG_FAN1 0x28 #define ADM9240_REG_FAN2 0x29 #define ADM9240_REG_COMPANY_ID 0x3E /* 0x23 for ADM9240; 0xDA for DS1780 */ /* 0x01 for LM81 */ #define ADM9240_REG_DIE_REV 0x3F /* These are read/write */ #define ADM9240_REG_2_5V_HIGH 0x2B #define ADM9240_REG_2_5V_LOW 0x2C #define ADM9240_REG_VCCP1_HIGH 0x2D #define ADM9240_REG_VCCP1_LOW 0x2E #define ADM9240_REG_3_3V_HIGH 0x2F #define ADM9240_REG_3_3V_LOW 0x30 #define ADM9240_REG_5V_HIGH 0x31 #define ADM9240_REG_5V_LOW 0x32 #define ADM9240_REG_12V_HIGH 0x33 #define ADM9240_REG_12V_LOW 0x34 #define ADM9240_REG_VCCP2_HIGH 0x35 #define ADM9240_REG_VCCP2_LOW 0x36 #define ADM9240_REG_TCRIT_LIMIT 0x37 /* LM81 only - not supported */ #define ADM9240_REG_LOW_LIMIT 0x38 /* LM81 only - not supported */ #define ADM9240_REG_TOS 0x39 #define ADM9240_REG_THYST 0x3A #define ADM9240_REG_FAN1_MIN 0x3B #define ADM9240_REG_FAN2_MIN 0x3C #define ADM9240_REG_CONFIG 0x40 #define ADM9240_REG_INT1_STAT 0x41 #define ADM9240_REG_INT2_STAT 0x42 #define ADM9240_REG_INT1_MASK 0x43 #define ADM9240_REG_INT2_MASK 0x44 #define ADM9240_REG_COMPAT 0x45 /* dummy compat. register for other drivers? */ #define ADM9240_REG_CHASSIS_CLEAR 0x46 #define ADM9240_REG_VID_FAN_DIV 0x47 #define ADM9240_REG_I2C_ADDR 0x48 #define ADM9240_REG_VID4 0x49 #define ADM9240_REG_TEMP_CONFIG 0x4B #define ADM9240_REG_EXTMODE1 0x4C /* LM81 only - not supported */ #define ADM9240_REG_EXTMODE2 0x4D /* LM81 only - not supported */ /* 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)<256?((((temp)&0x1fe) >> 1) * 10) + ((temp) & 1) * 5: \ ((((temp)&0x1fe) >> 1) -255) * 10 - ((temp) & 1) * 5) \ #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) #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))) #define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\ 205-(val)*5) /* Initial limits */ #define ADM9240_INIT_IN_0 190 #define ADM9240_INIT_IN_1 190 #define ADM9240_INIT_IN_2 190 #define ADM9240_INIT_IN_3 190 #define ADM9240_INIT_IN_4 190 #define ADM9240_INIT_IN_5 190 #define ADM9240_INIT_IN_PERCENTAGE 10 #define ADM9240_INIT_IN_MIN_0 \ (ADM9240_INIT_IN_0 - ADM9240_INIT_IN_0 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_0 \ (ADM9240_INIT_IN_0 + ADM9240_INIT_IN_0 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MIN_1 \ (ADM9240_INIT_IN_1 - ADM9240_INIT_IN_1 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_1 \ (ADM9240_INIT_IN_1 + ADM9240_INIT_IN_1 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MIN_2 \ (ADM9240_INIT_IN_2 - ADM9240_INIT_IN_2 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_2 \ (ADM9240_INIT_IN_2 + ADM9240_INIT_IN_2 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MIN_3 \ (ADM9240_INIT_IN_3 - ADM9240_INIT_IN_3 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_3 \ (ADM9240_INIT_IN_3 + ADM9240_INIT_IN_3 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MIN_4 \ (ADM9240_INIT_IN_4 - ADM9240_INIT_IN_4 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_4 \ (ADM9240_INIT_IN_4 + ADM9240_INIT_IN_4 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MIN_5 \ (ADM9240_INIT_IN_5 - ADM9240_INIT_IN_5 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_IN_MAX_5 \ (ADM9240_INIT_IN_5 + ADM9240_INIT_IN_5 * ADM9240_INIT_IN_PERCENTAGE / 100) #define ADM9240_INIT_FAN_MIN_1 3000 #define ADM9240_INIT_FAN_MIN_2 3000 #define ADM9240_INIT_TEMP_OS_MAX 600 #define ADM9240_INIT_TEMP_OS_HYST 500 #define ADM9240_INIT_TEMP_HOT_MAX 700 #define ADM9240_INIT_TEMP_HOT_HYST 600 #ifdef MODULE extern int init_module(void); extern int cleanup_module(void); #endif /* MODULE */ /* For each registered ADM9240, we need to keep some data in memory. That data is pointed to by adm9240_list[NR]->data. The structure itself is dynamically allocated, at the same time when a new adm9240 client is allocated. */ struct adm9240_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[2]; /* Register value */ u8 fan_min[2]; /* Register value */ u8 fan_div[2]; /* Register encoding, shifted right */ int temp; /* Temp, shifted right */ u8 temp_os_max; /* Register value */ u8 temp_os_hyst; /* 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_adm9240_init(void); static int __init adm9240_cleanup(void); static int adm9240_attach_adapter(struct i2c_adapter *adapter); static int adm9240_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int adm9240_detach_client(struct i2c_client *client); static int adm9240_command(struct i2c_client *client, unsigned int cmd, void *arg); static void adm9240_inc_use(struct i2c_client *client); static void adm9240_dec_use(struct i2c_client *client); static int adm9240_read_value(struct i2c_client *client, u8 register); static int adm9240_write_value(struct i2c_client *client, u8 register, u8 value); static void adm9240_update_client(struct i2c_client *client); static void adm9240_init_client(struct i2c_client *client); static void adm9240_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_analog_out(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm9240_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); /* I choose here for semi-static ADM9240 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 adm9240_id = 0; static struct i2c_driver adm9240_driver = { /* name */ "ADM9240 sensor driver", /* id */ I2C_DRIVERID_ADM9240, /* flags */ I2C_DF_NOTIFY, /* attach_adapter */ &adm9240_attach_adapter, /* detach_client */ &adm9240_detach_client, /* command */ &adm9240_command, /* inc_use */ &adm9240_inc_use, /* dec_use */ &adm9240_dec_use }; /* Used by adm9240_init/cleanup */ static int __initdata adm9240_initialized = 0; /* The /proc/sys entries */ /* These files are created for each detected ADM9240. 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 adm9240_dir_table_template[] = { {ADM9240_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_in}, {ADM9240_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_fan}, {ADM9240_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_fan}, {ADM9240_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_temp}, {ADM9240_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_fan_div}, {ADM9240_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_alarms}, {ADM9240_SYSCTL_ANALOG_OUT, "analog_out", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_analog_out}, {ADM9240_SYSCTL_VID, "vid", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm9240_vid}, {0} }; int adm9240_attach_adapter(struct i2c_adapter *adapter) { return i2c_detect(adapter, &addr_data, adm9240_detect); } static int adm9240_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct adm9240_data *data; int err = 0; const char *type_name = ""; const char *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 ("adm9240.o: adm9240_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 adm9240_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct adm9240_data), GFP_KERNEL))) { err = -ENOMEM; goto ERROR0; } data = (struct adm9240_data *) (new_client + 1); new_client->addr = address; new_client->data = data; new_client->adapter = adapter; new_client->driver = &adm9240_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ if (kind < 0) { if ( ((adm9240_read_value (new_client, ADM9240_REG_CONFIG) & 0x80) != 0x00) || (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR) != address)) goto ERROR1; } /* Determine the chip type. */ if (kind <= 0) { i = adm9240_read_value(new_client, ADM9240_REG_COMPANY_ID); if (i == 0x23) kind = adm9240; else if (i == 0xda) kind = ds1780; else if (i == 0x01) kind = lm81; else { if (kind == 0) printk ("adm9240.o: Ignoring 'force' parameter for unknown chip at " "adapter %d, address 0x%02x\n", i2c_adapter_id(adapter), address); goto ERROR1; } } if (kind == adm9240) { type_name = "adm9240"; client_name = "ADM9240 chip"; } else if (kind == ds1780) { type_name = "ds1780"; client_name = "DS1780 chip"; } else if (kind == lm81) { type_name = "lm81"; client_name = "LM81 chip"; } else { #ifdef DEBUG printk("adm9240.o: Internal error: unknown kind (%d)?!?", kind); #endif goto ERROR1; } /* Fill in the remaining client fields and put it into the global list */ strcpy(new_client->name, client_name); data->type = kind; new_client->id = adm9240_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, adm9240_dir_table_template, THIS_MODULE)) < 0) { err = i; goto ERROR4; } data->sysctl_id = i; /* Initialize the ADM9240 chip */ adm9240_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 adm9240_detach_client(struct i2c_client *client) { int err; i2c_deregister_entry(((struct adm9240_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("adm9240.o: Client deregistration failed, client not detached.\n"); return err; } kfree(client); return 0; } /* No commands defined yet */ int adm9240_command(struct i2c_client *client, unsigned int cmd, void *arg) { return 0; } void adm9240_inc_use(struct i2c_client *client) { #ifdef MODULE MOD_INC_USE_COUNT; #endif } void adm9240_dec_use(struct i2c_client *client) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif } int adm9240_read_value(struct i2c_client *client, u8 reg) { return 0xFF & i2c_smbus_read_byte_data(client, reg); } int adm9240_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 ADM9240. It should set limits, etc. */ void adm9240_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 */ adm9240_write_value(client, ADM9240_REG_CONFIG, 0x80); adm9240_write_value(client, ADM9240_REG_IN_MIN(0), IN_TO_REG(ADM9240_INIT_IN_MIN_0, 0)); adm9240_write_value(client, ADM9240_REG_IN_MAX(0), IN_TO_REG(ADM9240_INIT_IN_MAX_0, 0)); adm9240_write_value(client, ADM9240_REG_IN_MIN(1), IN_TO_REG(ADM9240_INIT_IN_MIN_1, 1)); adm9240_write_value(client, ADM9240_REG_IN_MAX(1), IN_TO_REG(ADM9240_INIT_IN_MAX_1, 1)); adm9240_write_value(client, ADM9240_REG_IN_MIN(2), IN_TO_REG(ADM9240_INIT_IN_MIN_2, 2)); adm9240_write_value(client, ADM9240_REG_IN_MAX(2), IN_TO_REG(ADM9240_INIT_IN_MAX_2, 2)); adm9240_write_value(client, ADM9240_REG_IN_MIN(3), IN_TO_REG(ADM9240_INIT_IN_MIN_3, 3)); adm9240_write_value(client, ADM9240_REG_IN_MAX(3), IN_TO_REG(ADM9240_INIT_IN_MAX_3, 3)); adm9240_write_value(client, ADM9240_REG_IN_MIN(4), IN_TO_REG(ADM9240_INIT_IN_MIN_4, 4)); adm9240_write_value(client, ADM9240_REG_IN_MAX(4), IN_TO_REG(ADM9240_INIT_IN_MAX_4, 4)); adm9240_write_value(client, ADM9240_REG_IN_MIN(5), IN_TO_REG(ADM9240_INIT_IN_MIN_5, 5)); adm9240_write_value(client, ADM9240_REG_IN_MAX(5), IN_TO_REG(ADM9240_INIT_IN_MAX_5, 5)); adm9240_write_value(client, ADM9240_REG_FAN1_MIN, FAN_TO_REG(ADM9240_INIT_FAN_MIN_1, 2)); adm9240_write_value(client, ADM9240_REG_FAN2_MIN, FAN_TO_REG(ADM9240_INIT_FAN_MIN_2, 2)); adm9240_write_value(client, ADM9240_REG_TOS, TEMP_LIMIT_TO_REG(ADM9240_INIT_TEMP_OS_MAX)); adm9240_write_value(client, ADM9240_REG_THYST, TEMP_LIMIT_TO_REG(ADM9240_INIT_TEMP_OS_HYST)); adm9240_write_value(client, ADM9240_REG_TEMP_CONFIG, 0x00); /* Start monitoring */ adm9240_write_value(client, ADM9240_REG_CONFIG, 0x01); } void adm9240_update_client(struct i2c_client *client) { struct adm9240_data *data = client->data; u8 i; down(&data->update_lock); if ( (jiffies - data->last_updated > (data->type == adm9240 ? HZ / 2 : HZ * 2)) || (jiffies < data->last_updated) || !data->valid) { #ifdef DEBUG printk("Starting adm9240 update\n"); #endif for (i = 0; i <= 5; i++) { data->in[i] = adm9240_read_value(client, ADM9240_REG_IN(i)); data->in_min[i] = adm9240_read_value(client, ADM9240_REG_IN_MIN(i)); data->in_max[i] = adm9240_read_value(client, ADM9240_REG_IN_MAX(i)); } data->fan[0] = adm9240_read_value(client, ADM9240_REG_FAN1); data->fan_min[0] = adm9240_read_value(client, ADM9240_REG_FAN1_MIN); data->fan[1] = adm9240_read_value(client, ADM9240_REG_FAN2); data->fan_min[1] = adm9240_read_value(client, ADM9240_REG_FAN2_MIN); data->temp = (adm9240_read_value(client, ADM9240_REG_TEMP) << 1) + ((adm9240_read_value (client, ADM9240_REG_TEMP_CONFIG) & 0x80) >> 7); data->temp_os_max = adm9240_read_value(client, ADM9240_REG_TOS); data->temp_os_hyst = adm9240_read_value(client, ADM9240_REG_THYST); i = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = (i >> 6) & 0x03; data->vid = i & 0x0f; data->vid |= (adm9240_read_value(client, ADM9240_REG_VID4) & 0x01) << 4; data->alarms = adm9240_read_value(client, ADM9240_REG_INT1_STAT) + (adm9240_read_value(client, ADM9240_REG_INT2_STAT) << 8); data->analog_out = adm9240_read_value(client, ADM9240_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 adm9240_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { int scales[6] = { 250, 270, 330, 500, 1200, 270 }; struct adm9240_data *data = client->data; int nr = ctl_name - ADM9240_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_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; 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); adm9240_write_value(client, ADM9240_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); adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]); } } } void adm9240_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; int nr = ctl_name - ADM9240_SYSCTL_FAN1 + 1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_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])); adm9240_write_value(client, nr == 1 ? ADM9240_REG_FAN1_MIN : ADM9240_REG_FAN2_MIN, data->fan_min[nr - 1]); } } } void adm9240_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_update_client(client); results[0] = TEMP_LIMIT_FROM_REG(data->temp_os_max); results[1] = TEMP_LIMIT_FROM_REG(data->temp_os_hyst); results[2] = TEMP_FROM_REG(data->temp); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_os_max = TEMP_LIMIT_TO_REG(results[0]); adm9240_write_value(client, ADM9240_REG_TOS, data->temp_os_max); } if (*nrels_mag >= 2) { data->temp_os_hyst = TEMP_LIMIT_TO_REG(results[1]); adm9240_write_value(client, ADM9240_REG_THYST, data->temp_os_hyst); } } } void adm9240_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void adm9240_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; int old; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_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 = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV); 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); adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, old); } } } void adm9240_analog_out(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_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]; adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->analog_out); } } } void adm9240_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm9240_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { adm9240_update_client(client); results[0] = VID_FROM_REG(data->vid); *nrels_mag = 1; } } int __init sensors_adm9240_init(void) { int res; printk("adm9240.o version %s (%s)\n", LM_VERSION, LM_DATE); adm9240_initialized = 0; if ((res = i2c_add_driver(&adm9240_driver))) { printk ("adm9240.o: Driver registration failed, module not inserted.\n"); adm9240_cleanup(); return res; } adm9240_initialized++; return 0; } int __init adm9240_cleanup(void) { int res; if (adm9240_initialized >= 1) { if ((res = i2c_del_driver(&adm9240_driver))) { printk ("adm9240.o: Driver deregistration failed, module not removed.\n"); return res; } adm9240_initialized--; } return 0; } EXPORT_NO_SYMBOLS; #ifdef MODULE MODULE_AUTHOR ("Frodo Looijaard and Philip Edelbrock "); MODULE_DESCRIPTION("ADM9240 driver"); int init_module(void) { return sensors_adm9240_init(); } int cleanup_module(void) { return adm9240_cleanup(); } #endif /* MODULE */