/* adm1021.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998, 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. */ #include #include #include #include #include #include "version.h" /* Addresses to scan */ static unsigned short normal_i2c[] = { SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { 0x18, 0x1a, 0x29, 0x2b, 0x4c, 0x4e, SENSORS_I2C_END }; static unsigned int normal_isa[] = { SENSORS_ISA_END }; static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; /* Insmod parameters */ SENSORS_INSMOD_8(adm1021, adm1023, max1617, max1617a, thmc10, lm84, gl523sm, mc1066); /* adm1021 constants specified below */ /* The adm1021 registers */ /* Read-only */ #define ADM1021_REG_TEMP 0x00 #define ADM1021_REG_REMOTE_TEMP 0x01 #define ADM1021_REG_STATUS 0x02 #define ADM1021_REG_MAN_ID 0x0FE /* 0x41 = Analog Devices, 0x49 = TI, 0x4D = Maxim, 0x23 = Genesys , 0x54 = Onsemi*/ #define ADM1021_REG_DEV_ID 0x0FF /* ADM1021 = 0x0X, ADM1021A/ADM1023 = 0x3X */ #define ADM1021_REG_DIE_CODE 0x0FF /* MAX1617A */ /* These use different addresses for reading/writing */ #define ADM1021_REG_CONFIG_R 0x03 #define ADM1021_REG_CONFIG_W 0x09 #define ADM1021_REG_CONV_RATE_R 0x04 #define ADM1021_REG_CONV_RATE_W 0x0A /* These are for the ADM1023's additional precision on the remote temp sensor */ #define ADM1021_REG_REM_TEMP_PREC 0x010 #define ADM1021_REG_REM_OFFSET 0x011 #define ADM1021_REG_REM_OFFSET_PREC 0x012 #define ADM1021_REG_REM_TOS_PREC 0x013 #define ADM1021_REG_REM_THYST_PREC 0x014 /* limits */ #define ADM1021_REG_TOS_R 0x05 #define ADM1021_REG_TOS_W 0x0B #define ADM1021_REG_REMOTE_TOS_R 0x07 #define ADM1021_REG_REMOTE_TOS_W 0x0D #define ADM1021_REG_THYST_R 0x06 #define ADM1021_REG_THYST_W 0x0C #define ADM1021_REG_REMOTE_THYST_R 0x08 #define ADM1021_REG_REMOTE_THYST_W 0x0E /* write-only */ #define ADM1021_REG_ONESHOT 0x0F #define ADM1021_ALARM_TEMP (ADM1021_ALARM_TEMP_HIGH | ADM1021_ALARM_TEMP_LOW) #define ADM1021_ALARM_RTEMP (ADM1021_ALARM_RTEMP_HIGH | ADM1021_ALARM_RTEMP_LOW\ | ADM1021_ALARM_RTEMP_NA) #define ADM1021_ALARM_ALL (ADM1021_ALARM_TEMP | ADM1021_ALARM_RTEMP) /* 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. */ /* Conversions note: 1021 uses normal integer signed-byte format*/ #define TEMP_FROM_REG(val) (val > 127 ? val-256 : val) #define TEMP_TO_REG(val) (SENSORS_LIMIT((val < 0 ? val+256 : val),0,255)) /* Each client has this additional data */ struct adm1021_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 temp, temp_os, temp_hyst; /* Register values */ u8 remote_temp, remote_temp_os, remote_temp_hyst, alarms, die_code; u8 fail; /* Special values for ADM1023 only */ u8 remote_temp_prec, remote_temp_os_prec, remote_temp_hyst_prec, remote_temp_offset, remote_temp_offset_prec; }; static int adm1021_attach_adapter(struct i2c_adapter *adapter); static int adm1021_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static void adm1021_init_client(struct i2c_client *client); static int adm1021_detach_client(struct i2c_client *client); static int adm1021_read_value(struct i2c_client *client, u8 reg); static int adm1021_rd_good(u8 *val, struct i2c_client *client, u8 reg, u8 mask); static int adm1021_write_value(struct i2c_client *client, u8 reg, u16 value); static void adm1021_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm1021_remote_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm1021_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm1021_die_code(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void adm1021_update_client(struct i2c_client *client); /* (amalysh) read only mode, otherwise any limit's writing confuse BIOS */ static int read_only = 0; /* This is the driver that will be inserted */ static struct i2c_driver adm1021_driver = { .owner = THIS_MODULE, .name = "ADM1021, MAX1617 sensor driver", .id = I2C_DRIVERID_ADM1021, .flags = I2C_DF_NOTIFY, .attach_adapter = adm1021_attach_adapter, .detach_client = adm1021_detach_client, }; /* -- SENSORS SYSCTL START -- */ #define ADM1021_SYSCTL_TEMP 1200 #define ADM1021_SYSCTL_REMOTE_TEMP 1201 #define ADM1021_SYSCTL_DIE_CODE 1202 #define ADM1021_SYSCTL_ALARMS 1203 #define ADM1021_ALARM_TEMP_HIGH 0x40 #define ADM1021_ALARM_TEMP_LOW 0x20 #define ADM1021_ALARM_RTEMP_HIGH 0x10 #define ADM1021_ALARM_RTEMP_LOW 0x08 #define ADM1021_ALARM_RTEMP_NA 0x04 /* -- SENSORS SYSCTL END -- */ /* These files are created for each detected adm1021. 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 adm1021_dir_table_template[] = { {ADM1021_SYSCTL_TEMP, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_temp}, {ADM1021_SYSCTL_REMOTE_TEMP, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_remote_temp}, {ADM1021_SYSCTL_DIE_CODE, "die_code", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_die_code}, {ADM1021_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_alarms}, {0} }; static ctl_table adm1021_max_dir_table_template[] = { {ADM1021_SYSCTL_TEMP, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_temp}, {ADM1021_SYSCTL_REMOTE_TEMP, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_remote_temp}, {ADM1021_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &adm1021_alarms}, {0} }; /* I choose here for semi-static 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 adm1021_id = 0; static int adm1021_attach_adapter(struct i2c_adapter *adapter) { return i2c_detect(adapter, &addr_data, adm1021_detect); } static int adm1021_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int i; struct i2c_client *new_client; struct adm1021_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 ("adm1021.o: adm1021_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 adm1021_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct adm1021_data), GFP_KERNEL))) { err = -ENOMEM; goto error0; } data = (struct adm1021_data *) (new_client + 1); new_client->addr = address; new_client->data = data; new_client->adapter = adapter; new_client->driver = &adm1021_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ if (kind < 0) { if ( (adm1021_read_value(new_client, ADM1021_REG_STATUS) & 0x03) != 0x00) goto error1; } /* Determine the chip type. */ if (kind <= 0) { i = adm1021_read_value(new_client, ADM1021_REG_MAN_ID); if (i == 0x41) if ((adm1021_read_value (new_client, ADM1021_REG_DEV_ID) & 0x0F0) == 0x030) kind = adm1023; else kind = adm1021; else if (i == 0x49) kind = thmc10; else if (i == 0x23) kind = gl523sm; else if ((i == 0x4d) && (adm1021_read_value (new_client, ADM1021_REG_DEV_ID) == 0x01)) kind = max1617a; /* LM84 Mfr ID in a different place */ else if (adm1021_read_value (new_client, ADM1021_REG_CONV_RATE_R) == 0x00) kind = lm84; else if (i == 0x54) kind = mc1066; else kind = max1617; } if (kind == max1617) { type_name = "max1617"; client_name = "MAX1617 chip"; } else if (kind == max1617a) { type_name = "max1617a"; client_name = "MAX1617A chip"; } else if (kind == adm1021) { type_name = "adm1021"; client_name = "ADM1021 chip"; } else if (kind == adm1023) { type_name = "adm1023"; client_name = "ADM1023 chip"; } else if (kind == thmc10) { type_name = "thmc10"; client_name = "THMC10 chip"; } else if (kind == lm84) { type_name = "lm84"; client_name = "LM84 chip"; } else if (kind == gl523sm) { type_name = "gl523sm"; client_name = "GL523SM chip"; } else if (kind == mc1066) { type_name = "mc1066"; client_name = "MC1066 chip"; } else { #ifdef DEBUG printk("adm1021.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 = adm1021_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, data->type == adm1021 ? adm1021_dir_table_template : adm1021_max_dir_table_template)) < 0) { err = i; goto error4; } data->sysctl_id = i; /* Initialize the ADM1021 chip */ adm1021_init_client(new_client); return 0; error4: i2c_detach_client(new_client); error3: error1: kfree(new_client); error0: return err; } static void adm1021_init_client(struct i2c_client *client) { /* Enable ADC and disable suspend mode */ adm1021_write_value(client, ADM1021_REG_CONFIG_W, 0); /* Set Conversion rate to 1/sec (this can be tinkered with) */ adm1021_write_value(client, ADM1021_REG_CONV_RATE_W, 0x04); } static int adm1021_detach_client(struct i2c_client *client) { int err; i2c_deregister_entry(((struct adm1021_data *) (client->data))-> sysctl_id); if ((err = i2c_detach_client(client))) { printk ("adm1021.o: Client deregistration failed, client not detached.\n"); return err; } kfree(client); return 0; } /* All registers are byte-sized */ static int adm1021_read_value(struct i2c_client *client, u8 reg) { return i2c_smbus_read_byte_data(client, reg); } /* only update value if read succeeded; set fail bit if failed */ static int adm1021_rd_good(u8 *val, struct i2c_client *client, u8 reg, u8 mask) { int i; struct adm1021_data *data = client->data; i = i2c_smbus_read_byte_data(client, reg); if (i < 0) { data->fail |= mask; return i; } *val = i; return 0; } static int adm1021_write_value(struct i2c_client *client, u8 reg, u16 value) { if (read_only > 0) return 0; return i2c_smbus_write_byte_data(client, reg, value); } static void adm1021_update_client(struct i2c_client *client) { struct adm1021_data *data = client->data; down(&data->update_lock); if ((jiffies - data->last_updated > HZ + HZ / 2) || (jiffies < data->last_updated) || !data->valid) { #ifdef DEBUG printk("Starting adm1021 update\n"); #endif data->fail = 0; adm1021_rd_good(&(data->temp), client, ADM1021_REG_TEMP, ADM1021_ALARM_TEMP); adm1021_rd_good(&(data->temp_os), client, ADM1021_REG_TOS_R, ADM1021_ALARM_TEMP); adm1021_rd_good(&(data->temp_hyst), client, ADM1021_REG_THYST_R, ADM1021_ALARM_TEMP); adm1021_rd_good(&(data->remote_temp), client, ADM1021_REG_REMOTE_TEMP, ADM1021_ALARM_RTEMP); adm1021_rd_good(&(data->remote_temp_os), client, ADM1021_REG_REMOTE_TOS_R, ADM1021_ALARM_RTEMP); adm1021_rd_good(&(data->remote_temp_hyst), client, ADM1021_REG_REMOTE_THYST_R, ADM1021_ALARM_RTEMP); data->alarms = ADM1021_ALARM_ALL; if (!adm1021_rd_good(&(data->alarms), client, ADM1021_REG_STATUS, 0)) data->alarms &= ADM1021_ALARM_ALL; if (data->type == adm1021) adm1021_rd_good(&(data->die_code), client, ADM1021_REG_DIE_CODE, 0); if (data->type == adm1023) { adm1021_rd_good(&(data->remote_temp_prec), client, ADM1021_REG_REM_TEMP_PREC, ADM1021_ALARM_TEMP); adm1021_rd_good(&(data->remote_temp_os_prec), client, ADM1021_REG_REM_TOS_PREC, ADM1021_ALARM_RTEMP); adm1021_rd_good(&(data->remote_temp_hyst_prec), client, ADM1021_REG_REM_THYST_PREC, ADM1021_ALARM_RTEMP); adm1021_rd_good(&(data->remote_temp_offset), client, ADM1021_REG_REM_OFFSET, ADM1021_ALARM_RTEMP); adm1021_rd_good(&(data->remote_temp_offset_prec), client, ADM1021_REG_REM_OFFSET_PREC, ADM1021_ALARM_RTEMP); } data->last_updated = jiffies; data->valid = 1; } up(&data->update_lock); } void adm1021_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm1021_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm1021_update_client(client); results[0] = TEMP_FROM_REG(data->temp_os); 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_os = TEMP_TO_REG(results[0]); adm1021_write_value(client, ADM1021_REG_TOS_W, data->temp_os); } if (*nrels_mag >= 2) { data->temp_hyst = TEMP_TO_REG(results[1]); adm1021_write_value(client, ADM1021_REG_THYST_W, data->temp_hyst); } } } void adm1021_remote_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm1021_data *data = client->data; int prec = 0; if (operation == SENSORS_PROC_REAL_INFO) if (data->type == adm1023) { *nrels_mag = 3; } else { *nrels_mag = 0; } else if (operation == SENSORS_PROC_REAL_READ) { adm1021_update_client(client); results[0] = TEMP_FROM_REG(data->remote_temp_os); results[1] = TEMP_FROM_REG(data->remote_temp_hyst); results[2] = TEMP_FROM_REG(data->remote_temp); if (data->type == adm1023) { results[0]=results[0]*1000 + ((data->remote_temp_os_prec >> 5) * 125); results[1]=results[1]*1000 + ((data->remote_temp_hyst_prec >> 5) * 125); results[2]=(TEMP_FROM_REG(data->remote_temp_offset)*1000) + ((data->remote_temp_offset_prec >> 5) * 125); results[3]=TEMP_FROM_REG(data->remote_temp)*1000 + ((data->remote_temp_prec >> 5) * 125); *nrels_mag = 4; } else { *nrels_mag = 3; } } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { if (data->type == adm1023) { prec=((results[0]-((results[0]/1000)*1000))/125)<<5; adm1021_write_value(client, ADM1021_REG_REM_TOS_PREC, prec); results[0]=results[0]/1000; data->remote_temp_os_prec=prec; } data->remote_temp_os = TEMP_TO_REG(results[0]); adm1021_write_value(client, ADM1021_REG_REMOTE_TOS_W, data->remote_temp_os); } if (*nrels_mag >= 2) { if (data->type == adm1023) { prec=((results[1]-((results[1]/1000)*1000))/125)<<5; adm1021_write_value(client, ADM1021_REG_REM_THYST_PREC, prec); results[1]=results[1]/1000; data->remote_temp_hyst_prec=prec; } data->remote_temp_hyst = TEMP_TO_REG(results[1]); adm1021_write_value(client, ADM1021_REG_REMOTE_THYST_W, data->remote_temp_hyst); } if (*nrels_mag >= 3) { if (data->type == adm1023) { prec=((results[2]-((results[2]/1000)*1000))/125)<<5; adm1021_write_value(client, ADM1021_REG_REM_OFFSET_PREC, prec); results[2]=results[2]/1000; data->remote_temp_offset_prec=prec; data->remote_temp_offset=results[2]; adm1021_write_value(client, ADM1021_REG_REM_OFFSET, data->remote_temp_offset); } } } } void adm1021_die_code(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm1021_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm1021_update_client(client); results[0] = data->die_code; *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { /* Can't write to it */ } } void adm1021_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct adm1021_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { adm1021_update_client(client); results[0] = data->alarms | data->fail; *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { /* Can't write to it */ } } static int __init sm_adm1021_init(void) { printk(KERN_INFO "adm1021.o version %s (%s)\n", LM_VERSION, LM_DATE); return i2c_add_driver(&adm1021_driver); } static void __exit sm_adm1021_exit(void) { i2c_del_driver(&adm1021_driver); } MODULE_AUTHOR ("Frodo Looijaard and Philip Edelbrock "); MODULE_DESCRIPTION("adm1021 driver"); MODULE_LICENSE("GPL"); MODULE_PARM(read_only, "i"); MODULE_PARM_DESC(read_only, "Don't set any values, read only mode"); module_init(sm_adm1021_init) module_exit(sm_adm1021_exit)