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lm-sensors/kernel/chips/asb100.c
T
Jean Delvare 3f690ffac2 Backport memory allocation reworking from Linux 2.6. 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2512 7894878c-1315-0410-8ee3-d5d059ff63e0
2004-05-08 13:37:41 +00:00

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/*
asb100.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 2003 Mark M. Hoffman <mhoffman@lightlink.com>
(derived from w83781d.c)
Copyright (c) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and
Mark Studebaker <mdsxyz123@yahoo.com>
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 <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/i2c-proc.h>
#include <linux/init.h>
#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 i2c_client client;
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 (!(data = kmalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
pr_debug("asb100.o: detect failed, kmalloc failed!\n");
err = -ENOMEM;
goto ERROR0;
}
new_client = &data->client;
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(data);
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;
}
if (data) {
/* primary client */
kfree(data);
} else {
/* subclients */
kfree(client);
}
return 0;
}
/* 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 = swab16(i2c_smbus_read_word_data (cl, 0));
break;
case 0x52: /* CONFIG */
res = i2c_smbus_read_byte_data(cl, 1);
break;
case 0x53: /* HYST */
res = swab16(i2c_smbus_read_word_data (cl, 2));
break;
case 0x55: /* MAX */
default:
res = swab16(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, swab16(value));
break;
case 0x55: /* MAX */
i2c_smbus_write_word_data(cl, 3, swab16(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 <mhoffman@lightlink.com>, "
"Frodo Looijaard <frodol@dds.nl>, "
"Philip Edelbrock <phil@netroedge.com>, and"
"Mark Studebaker <mdsxyz123@yahoo.com>");
MODULE_DESCRIPTION("ASB100 'Bach' driver");
MODULE_LICENSE("GPL");
module_init(asb100_init);
module_exit(asb100_exit);
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