/* asb100.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 2003 Mark M. Hoffman (derived from w83781d.c) Copyright (c) 1998 - 2003 Frodo Looijaard , Philip Edelbrock , and Mark Studebaker 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. */ /* This driver supports the hardware sensor chips: Asus ASB100 and ASB100-A "BACH". ASB100-A supports pwm1, while plain ASB100 does not. There is no known way for the driver to tell which one is there. Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA asb100 7 3 1 4 0x31 0x0694 yes no */ //#define DEBUG 1 #include #include #include #include #include #include "version.h" #include "sensors_vid.h" #include "lm75.h" #ifndef I2C_DRIVERID_ASB100 #define I2C_DRIVERID_ASB100 1043 #endif /* I2C addresses to scan */ static unsigned short normal_i2c[] = { SENSORS_I2C_END }; static unsigned short normal_i2c_range[] = { 0x28, 0x2f, SENSORS_I2C_END }; /* ISA addresses to scan (none) */ static unsigned int normal_isa[] = { SENSORS_ISA_END }; static unsigned int normal_isa_range[] = { SENSORS_ISA_END }; /* default VRM to 9.0 instead of 8.2 */ #define ASB100_DEFAULT_VRM 90 /* Insmod parameters */ SENSORS_INSMOD_1(asb100); SENSORS_MODULE_PARM(force_subclients, "List of subclient addresses: " \ "{bus, clientaddr, subclientaddr1, subclientaddr2}"); /* Voltage IN registers 0-6 */ #define ASB100_REG_IN(nr) (0x20 + (nr)) #define ASB100_REG_IN_MAX(nr) (0x2b + (nr * 2)) #define ASB100_REG_IN_MIN(nr) (0x2c + (nr * 2)) /* FAN IN registers 1-3 */ #define ASB100_REG_FAN(nr) (0x27 + (nr)) #define ASB100_REG_FAN_MIN(nr) (0x3a + (nr)) /* TEMPERATURE registers 1-4 */ static const u16 asb100_reg_temp[] = {0, 0x27, 0x150, 0x250, 0x17}; static const u16 asb100_reg_temp_max[] = {0, 0x39, 0x155, 0x255, 0x18}; static const u16 asb100_reg_temp_hyst[] = {0, 0x3a, 0x153, 0x253, 0x19}; #define ASB100_REG_TEMP(nr) (asb100_reg_temp[nr]) #define ASB100_REG_TEMP_MAX(nr) (asb100_reg_temp_max[nr]) #define ASB100_REG_TEMP_HYST(nr) (asb100_reg_temp_hyst[nr]) #define ASB100_REG_TEMP2_CONFIG 0x0152 #define ASB100_REG_TEMP3_CONFIG 0x0252 #define ASB100_REG_CONFIG 0x40 #define ASB100_REG_ALARM1 0x41 #define ASB100_REG_ALARM2 0x42 #define ASB100_REG_SMIM1 0x43 #define ASB100_REG_SMIM2 0x44 #define ASB100_REG_VID_FANDIV 0x47 #define ASB100_REG_I2C_ADDR 0x48 #define ASB100_REG_CHIPID 0x49 #define ASB100_REG_I2C_SUBADDR 0x4a #define ASB100_REG_PIN 0x4b #define ASB100_REG_IRQ 0x4c #define ASB100_REG_BANK 0x4e #define ASB100_REG_CHIPMAN 0x4f #define ASB100_REG_WCHIPID 0x58 /* bit 7 -> enable, bits 0-3 -> duty cycle */ #define ASB100_REG_PWM1 0x59 /* CONVERSIONS Rounding and limit checking is only done on the TO_REG variants. */ /* These constants are a guess, consistent w/ w83781d */ #define ASB100_IN_MIN ( 0) #define ASB100_IN_MAX (408) /* IN: 1/100 V (0V to 4.08V) REG: 16mV/bit */ static u8 IN_TO_REG(unsigned val) { unsigned nval = SENSORS_LIMIT(val, ASB100_IN_MIN, ASB100_IN_MAX); return (nval * 10 + 8) / 16; } static unsigned IN_FROM_REG(u8 reg) { return (reg * 16 + 5) / 10; } static 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); } static int FAN_FROM_REG(u8 val, int div) { return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); } /* These constants are a guess, consistent w/ w83781d */ #define ASB100_TEMP_MIN (-1280) #define ASB100_TEMP_MAX ( 1270) /* TEMP: 1/10 degrees C (-128C to +127C) REG: 1C/bit, two's complement */ static u8 TEMP_TO_REG(int temp) { int ntemp = SENSORS_LIMIT(temp, ASB100_TEMP_MIN, ASB100_TEMP_MAX); ntemp += (ntemp<0 ? -5 : 5); return (u8)(ntemp / 10); } static int TEMP_FROM_REG(u8 reg) { return (s8)reg * 10; } /* PWM: 0 - 255 per sensors documentation REG: (6.25% duty cycle per bit) */ static u8 ASB100_PWM_TO_REG(int pwm) { pwm = SENSORS_LIMIT(pwm, 0, 255); return (u8)(pwm / 16); } static int ASB100_PWM_FROM_REG(u8 reg) { return reg * 16; } #define ALARMS_FROM_REG(val) (val) #define DIV_FROM_REG(val) (1 << (val)) /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ static u8 DIV_TO_REG(long val) { return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; } /* For each registered client, we need to keep some data in memory. That data is pointed to by client->data. The structure itself is dynamically allocated, at the same time the client itself is allocated. */ struct asb100_data { struct semaphore lock; int sysctl_id; enum chips type; struct semaphore update_lock; unsigned long last_updated; /* In jiffies */ /* array of 2 pointers to subclients */ struct i2c_client *lm75[2]; char valid; /* !=0 if following fields are valid */ u8 in[7]; /* Register value */ u8 in_max[7]; /* Register value */ u8 in_min[7]; /* Register value */ u8 fan[3]; /* Register value */ u8 fan_min[3]; /* Register value */ u16 temp[4]; /* Register value (0 and 3 are u8 only) */ u16 temp_max[4]; /* Register value (0 and 3 are u8 only) */ u16 temp_hyst[4]; /* Register value (0 and 3 are u8 only) */ u8 fan_div[3]; /* Register encoding, right justified */ u8 pwm; /* Register encoding */ u8 vid; /* Register encoding, combined */ u32 alarms; /* Register encoding, combined */ u8 vrm; }; static int asb100_attach_adapter(struct i2c_adapter *adapter); static int asb100_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind); static int asb100_detach_client(struct i2c_client *client); static int asb100_read_value(struct i2c_client *client, u16 reg); static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val); static void asb100_update_client(struct i2c_client *client); static void asb100_init_client(struct i2c_client *client); static void asb100_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_temp_add(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_vrm(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static void asb100_pwm(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results); static struct i2c_driver asb100_driver = { .owner = THIS_MODULE, .name = "asb100", .id = I2C_DRIVERID_ASB100, .flags = I2C_DF_NOTIFY, .attach_adapter = asb100_attach_adapter, .detach_client = asb100_detach_client, }; /* The /proc/sys entries */ /* -- SENSORS SYSCTL START -- */ #define ASB100_SYSCTL_IN0 1000 /* Volts * 100 */ #define ASB100_SYSCTL_IN1 1001 #define ASB100_SYSCTL_IN2 1002 #define ASB100_SYSCTL_IN3 1003 #define ASB100_SYSCTL_IN4 1004 #define ASB100_SYSCTL_IN5 1005 #define ASB100_SYSCTL_IN6 1006 #define ASB100_SYSCTL_FAN1 1101 /* Rotations/min */ #define ASB100_SYSCTL_FAN2 1102 #define ASB100_SYSCTL_FAN3 1103 #define ASB100_SYSCTL_TEMP1 1200 /* Degrees Celcius * 10 */ #define ASB100_SYSCTL_TEMP2 1201 #define ASB100_SYSCTL_TEMP3 1202 #define ASB100_SYSCTL_TEMP4 1203 #define ASB100_SYSCTL_VID 1300 /* Volts * 1000 */ #define ASB100_SYSCTL_VRM 1301 #define ASB100_SYSCTL_PWM1 1401 /* 0-255 => 0-100% duty cycle */ #define ASB100_SYSCTL_FAN_DIV 2000 /* 1, 2, 4 or 8 */ #define ASB100_SYSCTL_ALARMS 2001 /* bitvector */ #define ASB100_ALARM_IN0 0x0001 /* ? */ #define ASB100_ALARM_IN1 0x0002 /* ? */ #define ASB100_ALARM_IN2 0x0004 #define ASB100_ALARM_IN3 0x0008 #define ASB100_ALARM_TEMP1 0x0010 #define ASB100_ALARM_TEMP2 0x0020 #define ASB100_ALARM_FAN1 0x0040 #define ASB100_ALARM_FAN2 0x0080 #define ASB100_ALARM_IN4 0x0100 #define ASB100_ALARM_IN5 0x0200 /* ? */ #define ASB100_ALARM_IN6 0x0400 /* ? */ #define ASB100_ALARM_FAN3 0x0800 #define ASB100_ALARM_CHAS 0x1000 #define ASB100_ALARM_TEMP3 0x2000 #define ASB100_ALARM_IN7 0x10000 /* ? */ #define ASB100_ALARM_IN8 0x20000 /* ? */ /* -- SENSORS SYSCTL END -- */ /* These files are created for each detected chip. 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. */ /* no datasheet - but we did get some hints from someone who claimed to have the datasheet */ #define ASB100_SYSCTL_IN(nr) {ASB100_SYSCTL_IN##nr, "in" #nr, NULL, 0, \ 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_in} #define ASB100_SYSCTL_FAN(nr) {ASB100_SYSCTL_FAN##nr, "fan" #nr, NULL, 0, \ 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_fan} #define ASB100_SYSCTL_TEMP(nr, func) {ASB100_SYSCTL_TEMP##nr, "temp" #nr, \ NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, func} static ctl_table asb100_dir_table_template[] = { ASB100_SYSCTL_IN(0), ASB100_SYSCTL_IN(1), ASB100_SYSCTL_IN(2), ASB100_SYSCTL_IN(3), ASB100_SYSCTL_IN(4), ASB100_SYSCTL_IN(5), ASB100_SYSCTL_IN(6), ASB100_SYSCTL_FAN(1), ASB100_SYSCTL_FAN(2), ASB100_SYSCTL_FAN(3), ASB100_SYSCTL_TEMP(1, &asb100_temp), ASB100_SYSCTL_TEMP(2, &asb100_temp_add), ASB100_SYSCTL_TEMP(3, &asb100_temp_add), ASB100_SYSCTL_TEMP(4, &asb100_temp), {ASB100_SYSCTL_VID, "vid", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_vid}, {ASB100_SYSCTL_VRM, "vrm", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_vrm}, {ASB100_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_fan_div}, {ASB100_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_alarms}, {ASB100_SYSCTL_PWM1, "pwm1", NULL, 0, 0644, NULL, &i2c_proc_real, &i2c_sysctl_real, NULL, &asb100_pwm}, {0} }; /* This function is called when: asb100_driver is inserted (when this module is loaded), for each available adapter when a new adapter is inserted (and asb100_driver is still present) */ static int asb100_attach_adapter(struct i2c_adapter *adapter) { return i2c_detect(adapter, &addr_data, asb100_detect); } static int asb100_detect_subclients(struct i2c_adapter *adapter, int address, int kind, struct i2c_client *new_client) { int i, id, err; struct asb100_data *data = new_client->data; data->lm75[0] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[0])) { err = -ENOMEM; goto ERROR_SC_0; } memset(data->lm75[0], 0x00, sizeof(struct i2c_client)); data->lm75[1] = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); if (!(data->lm75[1])) { err = -ENOMEM; goto ERROR_SC_1; } memset(data->lm75[1], 0x00, sizeof(struct i2c_client)); id = i2c_adapter_id(adapter); if (force_subclients[0] == id && force_subclients[1] == address) { for (i = 2; i <= 3; i++) { if (force_subclients[i] < 0x48 || force_subclients[i] > 0x4f) { printk(KERN_ERR "asb100.o: invalid subclient " "address %d; must be 0x48-0x4f\n", force_subclients[i]); err = -ENODEV; goto ERROR_SC_2; } } asb100_write_value(new_client, ASB100_REG_I2C_SUBADDR, (force_subclients[2] & 0x07) | ((force_subclients[3] & 0x07) <<4)); data->lm75[0]->addr = force_subclients[2]; data->lm75[1]->addr = force_subclients[3]; } else { int val = asb100_read_value(new_client, ASB100_REG_I2C_SUBADDR); data->lm75[0]->addr = 0x48 + (val & 0x07); data->lm75[1]->addr = 0x48 + ((val >> 4) & 0x07); } if(data->lm75[0]->addr == data->lm75[1]->addr) { printk(KERN_ERR "asb100.o: duplicate addresses 0x%x " "for subclients\n", data->lm75[0]->addr); err = -ENODEV; goto ERROR_SC_2; } for (i = 0; i <= 1; i++) { data->lm75[i]->data = NULL; data->lm75[i]->adapter = adapter; data->lm75[i]->driver = &asb100_driver; data->lm75[i]->flags = 0; strcpy(data->lm75[i]->name, "asb100 subclient"); } if ((err = i2c_attach_client(data->lm75[0]))) { printk(KERN_ERR "asb100.o: Subclient %d registration " "at address 0x%x failed.\n", i, data->lm75[0]->addr); goto ERROR_SC_2; } if ((err = i2c_attach_client(data->lm75[1]))) { printk(KERN_ERR "asb100.o: Subclient %d registration " "at address 0x%x failed.\n", i, data->lm75[1]->addr); goto ERROR_SC_3; } return 0; /* Undo inits in case of errors */ ERROR_SC_3: i2c_detach_client(data->lm75[0]); ERROR_SC_2: kfree(data->lm75[1]); ERROR_SC_1: kfree(data->lm75[0]); ERROR_SC_0: return err; } static int asb100_detect(struct i2c_adapter *adapter, int address, unsigned short flags, int kind) { int err; struct i2c_client *new_client; struct asb100_data *data; /* asb100 is SMBus only */ if (i2c_is_isa_adapter(adapter)) { pr_debug("asb100.o: detect failed, " "cannot attach to legacy adapter!\n"); err = -ENODEV; goto ERROR0; } if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { pr_debug("asb100.o: detect failed, " "smbus byte data not supported!\n"); err = -ENODEV; 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 asb100_{read,write}_value. */ if (!(new_client = kmalloc(sizeof(struct i2c_client) + sizeof(struct asb100_data), GFP_KERNEL))) { pr_debug("asb100.o: detect failed, kmalloc failed!\n"); err = -ENOMEM; goto ERROR0; } data = (struct asb100_data *) (new_client + 1); new_client->addr = address; init_MUTEX(&data->lock); new_client->data = data; new_client->adapter = adapter; new_client->driver = &asb100_driver; new_client->flags = 0; /* Now, we do the remaining detection. */ /* The chip may be stuck in some other bank than bank 0. This may make reading other information impossible. Specify a force=... or force_*=... parameter, and the chip will be reset to the right bank. */ if (kind < 0) { int val1 = asb100_read_value(new_client, ASB100_REG_BANK); int val2 = asb100_read_value(new_client, ASB100_REG_CHIPMAN); /* If we're in bank 0 */ if ( (!(val1 & 0x07)) && /* Check for ASB100 ID (low byte) */ ( ((!(val1 & 0x80)) && (val2 != 0x94)) || /* Check for ASB100 ID (high byte ) */ ((val1 & 0x80) && (val2 != 0x06)) ) ) { pr_debug("asb100.o: detect failed, " "bad chip id 0x%02x!\n", val2); err = -ENODEV; goto ERROR1; } } /* kind < 0 */ /* We have either had a force parameter, or we have already detected Winbond. Put it now into bank 0 and Vendor ID High Byte */ asb100_write_value(new_client, ASB100_REG_BANK, (asb100_read_value(new_client, ASB100_REG_BANK) & 0x78) | 0x80); /* Determine the chip type. */ if (kind <= 0) { int val1 = asb100_read_value(new_client, ASB100_REG_WCHIPID); int val2 = asb100_read_value(new_client, ASB100_REG_CHIPMAN); if ((val1 == 0x31) && (val2 == 0x06)) kind = asb100; else { if (kind == 0) printk (KERN_WARNING "asb100.o: Ignoring " "'force' parameter for unknown chip " "at adapter %d, address 0x%02x.\n", i2c_adapter_id(adapter), address); err = -ENODEV; goto ERROR1; } } /* Fill in remaining client fields and put it into the global list */ strcpy(new_client->name, "ASB100 chip"); data->type = kind; 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 ERROR1; /* Attach secondary lm75 clients */ if ((err = asb100_detect_subclients(adapter, address, kind, new_client))) goto ERROR2; /* Initialize the chip */ asb100_init_client(new_client); /* Register a new directory entry with module sensors */ if ((data->sysctl_id = i2c_register_entry(new_client, "asb100", asb100_dir_table_template)) < 0) { err = data->sysctl_id; goto ERROR3; } return 0; ERROR3: i2c_detach_client(data->lm75[0]); kfree(data->lm75[1]); kfree(data->lm75[0]); ERROR2: i2c_detach_client(new_client); ERROR1: kfree(new_client); ERROR0: return err; } static int asb100_detach_client(struct i2c_client *client) { int err; struct asb100_data *data = client->data; /* remove sysctl table (primary client only) */ if ((data)) i2c_deregister_entry(data->sysctl_id); if ((err = i2c_detach_client(client))) { printk (KERN_ERR "asb100.o: Client deregistration failed; " "client not detached.\n"); return err; } kfree(client); return 0; } static u16 swap_bytes(u16 val) { return (val >> 8) | (val << 8); } /* The SMBus locks itself, usually, but nothing may access the Winbond between bank switches. ISA access must always be locked explicitly! We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks, would slow down the W83781D access and should not be necessary. There are some ugly typecasts here, but the good news is - they should nowhere else be necessary! */ static int asb100_read_value(struct i2c_client *client, u16 reg) { struct asb100_data *data = client->data; struct i2c_client *cl; int res, bank; down(&data->lock); bank = (reg >> 8) & 0x0f; if (bank > 2) /* switch banks */ i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); if (bank == 0 || bank > 2) { res = i2c_smbus_read_byte_data(client, reg & 0xff); } else { /* switch to subclient */ cl = data->lm75[bank - 1]; /* convert from ISA to LM75 I2C addresses */ switch (reg & 0xff) { case 0x50: /* TEMP */ res = swap_bytes(i2c_smbus_read_word_data (cl, 0)); break; case 0x52: /* CONFIG */ res = i2c_smbus_read_byte_data(cl, 1); break; case 0x53: /* HYST */ res = swap_bytes(i2c_smbus_read_word_data (cl, 2)); break; case 0x55: /* MAX */ default: res = swap_bytes(i2c_smbus_read_word_data (cl, 3)); break; } } if (bank > 2) i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); up(&data->lock); return res; } static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value) { struct asb100_data *data = client->data; struct i2c_client *cl; int bank; down(&data->lock); bank = (reg >> 8) & 0x0f; if (bank > 2) /* switch banks */ i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank); if (bank == 0 || bank > 2) { i2c_smbus_write_byte_data(client, reg & 0xff, value & 0xff); } else { /* switch to subclient */ cl = data->lm75[bank - 1]; /* convert from ISA to LM75 I2C addresses */ switch (reg & 0xff) { case 0x52: /* CONFIG */ i2c_smbus_write_byte_data(cl, 1, value & 0xff); break; case 0x53: /* HYST */ i2c_smbus_write_word_data(cl, 2, swap_bytes(value)); break; case 0x55: /* MAX */ i2c_smbus_write_word_data(cl, 3, swap_bytes(value)); break; } } if (bank > 2) i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0); up(&data->lock); } static void asb100_init_client(struct i2c_client *client) { struct asb100_data *data = client->data; int vid = 0; vid = asb100_read_value(client, ASB100_REG_VID_FANDIV) & 0x0f; vid |= (asb100_read_value(client, ASB100_REG_CHIPID) & 0x01) << 4; data->vrm = ASB100_DEFAULT_VRM; vid = vid_from_reg(vid, data->vrm); /* Start monitoring */ asb100_write_value(client, ASB100_REG_CONFIG, (asb100_read_value(client, ASB100_REG_CONFIG) & 0xf7) | 0x01); } static void asb100_update_client(struct i2c_client *client) { struct asb100_data *data = client->data; int i; down(&data->update_lock); if (time_after(jiffies - data->last_updated, HZ + HZ / 2) || time_before(jiffies, data->last_updated) || !data->valid) { pr_debug("asb100.o: starting device update...\n"); /* 7 voltage inputs */ for (i = 0; i < 7; i++) { data->in[i] = asb100_read_value(client, ASB100_REG_IN(i)); data->in_min[i] = asb100_read_value(client, ASB100_REG_IN_MIN(i)); data->in_max[i] = asb100_read_value(client, ASB100_REG_IN_MAX(i)); } /* 3 fan inputs */ for (i = 1; i <= 3; i++) { data->fan[i-1] = asb100_read_value(client, ASB100_REG_FAN(i)); data->fan_min[i-1] = asb100_read_value(client, ASB100_REG_FAN_MIN(i)); } /* 4 temperature inputs */ for (i = 1; i <= 4; i++) { data->temp[i-1] = asb100_read_value(client, ASB100_REG_TEMP(i)); data->temp_max[i-1] = asb100_read_value(client, ASB100_REG_TEMP_MAX(i)); data->temp_hyst[i-1] = asb100_read_value(client, ASB100_REG_TEMP_HYST(i)); } /* VID and fan divisors */ i = asb100_read_value(client, ASB100_REG_VID_FANDIV); data->vid = i & 0x0f; data->vid |= (asb100_read_value(client, ASB100_REG_CHIPID) & 0x01) << 4; data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = (i >> 6) & 0x03; data->fan_div[2] = (asb100_read_value(client, ASB100_REG_PIN) >> 6) & 0x03; /* PWM */ data->pwm = asb100_read_value(client, ASB100_REG_PWM1); /* alarms */ data->alarms = asb100_read_value(client, ASB100_REG_ALARM1) + (asb100_read_value(client, ASB100_REG_ALARM2) << 8); data->last_updated = jiffies; data->valid = 1; pr_debug("asb100.o: ... update complete.\n"); } 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. */ static void asb100_in(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; int nr = ctl_name - ASB100_SYSCTL_IN0; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 2; else if (operation == SENSORS_PROC_REAL_READ) { asb100_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]); asb100_write_value(client, ASB100_REG_IN_MIN(nr), data->in_min[nr]); } if (*nrels_mag >= 2) { data->in_max[nr] = IN_TO_REG(results[1]); asb100_write_value(client, ASB100_REG_IN_MAX(nr), data->in_max[nr]); } } } void asb100_fan(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; int nr = ctl_name - ASB100_SYSCTL_FAN1 + 1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { asb100_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])); asb100_write_value(client, ASB100_REG_FAN_MIN(nr), data->fan_min[nr - 1]); } } } void asb100_temp(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; int nr = ctl_name - ASB100_SYSCTL_TEMP1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = TEMP_FROM_REG(data->temp_max[nr]); results[1] = TEMP_FROM_REG(data->temp_hyst[nr]); results[2] = TEMP_FROM_REG(data->temp[nr]); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_max[nr] = TEMP_TO_REG(results[0]); asb100_write_value(client, ASB100_REG_TEMP_MAX(nr+1), data->temp_max[nr]); } if (*nrels_mag >= 2) { data->temp_hyst[nr] = TEMP_TO_REG(results[1]); asb100_write_value(client, ASB100_REG_TEMP_HYST(nr+1), data->temp_hyst[nr]); } } } void asb100_temp_add(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; int nr = ctl_name - ASB100_SYSCTL_TEMP1; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = LM75_TEMP_FROM_REG(data->temp_max[nr]); results[1] = LM75_TEMP_FROM_REG(data->temp_hyst[nr]); results[2] = LM75_TEMP_FROM_REG(data->temp[nr]); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) { data->temp_max[nr] = LM75_TEMP_TO_REG(results[0]); asb100_write_value(client, ASB100_REG_TEMP_MAX(nr+1), data->temp_max[nr]); } if (*nrels_mag >= 2) { data->temp_hyst[nr] = LM75_TEMP_TO_REG(results[1]); asb100_write_value(client, ASB100_REG_TEMP_HYST(nr+1), data->temp_hyst[nr]); } } } void asb100_vid(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 3; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = vid_from_reg(data->vid, data->vrm); *nrels_mag = 1; } } void asb100_vrm(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 1; else if (operation == SENSORS_PROC_REAL_READ) { results[0] = data->vrm; *nrels_mag = 1; } else if (operation == SENSORS_PROC_REAL_WRITE) { if (*nrels_mag >= 1) data->vrm = results[0]; } } void asb100_alarms(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = ALARMS_FROM_REG(data->alarms); *nrels_mag = 1; } } void asb100_fan_div(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; int old, old2; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = DIV_FROM_REG(data->fan_div[0]); results[1] = DIV_FROM_REG(data->fan_div[1]); results[2] = DIV_FROM_REG(data->fan_div[2]); *nrels_mag = 3; } else if (operation == SENSORS_PROC_REAL_WRITE) { old = asb100_read_value(client, ASB100_REG_VID_FANDIV); if (*nrels_mag >= 3) { data->fan_div[2] = DIV_TO_REG(results[2]); old2 = asb100_read_value(client, ASB100_REG_PIN); old2 = (old2 & 0x3f) | ((data->fan_div[2] & 0x03) << 6); asb100_write_value(client, ASB100_REG_PIN, old2); } if (*nrels_mag >= 2) { data->fan_div[1] = DIV_TO_REG(results[1]); old = (old & 0x3f) | ((data->fan_div[1] & 0x03) << 6); } if (*nrels_mag >= 1) { data->fan_div[0] = DIV_TO_REG(results[0]); old = (old & 0xcf) | ((data->fan_div[0] & 0x03) << 4); asb100_write_value(client, ASB100_REG_VID_FANDIV, old); } } } void asb100_pwm(struct i2c_client *client, int operation, int ctl_name, int *nrels_mag, long *results) { struct asb100_data *data = client->data; if (operation == SENSORS_PROC_REAL_INFO) *nrels_mag = 0; else if (operation == SENSORS_PROC_REAL_READ) { asb100_update_client(client); results[0] = ASB100_PWM_FROM_REG(data->pwm & 0x0f); results[1] = (data->pwm & 0x80) ? 1 : 0; *nrels_mag = 2; } else if (operation == SENSORS_PROC_REAL_WRITE) { u8 val = data->pwm; if (*nrels_mag >= 1) { val = 0x0f & ASB100_PWM_TO_REG(results[0]); if (*nrels_mag >= 2) { if (results[1]) val |= 0x80; else val &= ~0x80; } asb100_write_value(client, ASB100_REG_PWM1, val); } } } static int __init asb100_init(void) { printk(KERN_INFO "asb100.o version %s (%s)\n", LM_VERSION, LM_DATE); return i2c_add_driver(&asb100_driver); } static void __exit asb100_exit(void) { i2c_del_driver(&asb100_driver); } MODULE_AUTHOR( "Mark M. Hoffman , " "Frodo Looijaard , " "Philip Edelbrock , and" "Mark Studebaker "); MODULE_DESCRIPTION("ASB100 'Bach' driver"); MODULE_LICENSE("GPL"); module_init(asb100_init); module_exit(asb100_exit);