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lm-sensors/kernel/chips/lm80.c
T
Frodo Looijaard 68a31e3480 Some code cleanups 
* Removed several superfluous (struct i2c_client *) casts (they were left
  from the time we had separate structs for smbus and isa)
* Removed the internal lists of registered clients
  They have not been used for quite some time now, took memory space,
  and limited the maximum number of clients that could be registered.

Also removed two small Makefile errors - I am happy I caught them before
the next release!


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@582 7894878c-1315-0410-8ee3-d5d059ff63e0
1999-09-27 13:20:45 +00:00

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/*
lm80.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
and Philip Edelbrock <phil@netroedge.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.
*/
#include <linux/module.h>
#include <linux/malloc.h>
#include <linux/proc_fs.h>
#include <linux/ioport.h>
#include <linux/sysctl.h>
#include <asm/errno.h>
#include <asm/io.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include "version.h"
#include "i2c-isa.h"
#include "sensors.h"
#include "compat.h"
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,53)
#include <linux/init.h>
#else
#define __init
#define __initdata
#endif
/* Addresses to scan */
static unsigned short normal_i2c[] = {SENSORS_I2C_END};
static unsigned short normal_i2c_range[] = {0x20,0x2f,SENSORS_I2C_END};
static unsigned int normal_isa[] = {SENSORS_ISA_END};
static unsigned int normal_isa_range[] = {SENSORS_ISA_END};
/* Insmod parameters */
SENSORS_INSMOD_1(lm80);
/* Many LM80 constants specified below */
/* The LM80 registers */
#define LM80_REG_IN_MAX(nr) (0x2a + (nr) * 2)
#define LM80_REG_IN_MIN(nr) (0x2b + (nr) * 2)
#define LM80_REG_IN(nr) (0x20 + (nr))
#define LM80_REG_FAN1_MIN 0x3c
#define LM80_REG_FAN2_MIN 0x3d
#define LM80_REG_FAN1 0x28
#define LM80_REG_FAN2 0x29
#define LM80_REG_TEMP 0x27
#define LM80_REG_TEMP_HOT_MAX 0x38
#define LM80_REG_TEMP_HOT_HYST 0x39
#define LM80_REG_TEMP_OS_MAX 0x3a
#define LM80_REG_TEMP_OS_HYST 0x3b
#define LM80_REG_CONFIG 0x00
#define LM80_REG_ALARM1 0x01
#define LM80_REG_ALARM2 0x02
#define LM80_REG_MASK1 0x03
#define LM80_REG_MASK2 0x04
#define LM80_REG_FANDIV 0x05
#define LM80_REG_RES 0x06
/* 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),0,255))
#define IN_FROM_REG(val,nr) (val)
extern inline unsigned char
FAN_TO_REG (unsigned rpm, unsigned 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)))
extern inline long TEMP_FROM_REG(u16 temp)
{
long res;
temp= temp >> 4;
if (temp < 0x0800) {
res = (625 * (long)temp);
} else {
res = ((long)temp - 0x01000) * 625;
}
return res;
}
#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*100)
#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT(((val)<0?(((val)-50)/100):\
((val)+50)/100), \
0,255)
#define ALARMS_FROM_REG(val) (val)
#define DIV_FROM_REG(val) (1 << (val))
#define DIV_TO_REG(val) ((val)==8?3:(val)==4?2:(val)==1?0:1)
/* Initial limits */
#define LM80_INIT_IN_0 190
#define LM80_INIT_IN_1 190
#define LM80_INIT_IN_2 190
#define LM80_INIT_IN_3 190
#define LM80_INIT_IN_4 190
#define LM80_INIT_IN_5 190
#define LM80_INIT_IN_6 190
#define LM80_INIT_IN_PERCENTAGE 10
#define LM80_INIT_IN_MIN_0 \
(LM80_INIT_IN_0 - LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_0 \
(LM80_INIT_IN_0 + LM80_INIT_IN_0 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_1 \
(LM80_INIT_IN_1 - LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_1 \
(LM80_INIT_IN_1 + LM80_INIT_IN_1 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_2 \
(LM80_INIT_IN_2 - LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_2 \
(LM80_INIT_IN_2 + LM80_INIT_IN_2 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_3 \
(LM80_INIT_IN_3 - LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_3 \
(LM80_INIT_IN_3 + LM80_INIT_IN_3 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_4 \
(LM80_INIT_IN_4 - LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_4 \
(LM80_INIT_IN_4 + LM80_INIT_IN_4 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_5 \
(LM80_INIT_IN_5 - LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_5 \
(LM80_INIT_IN_5 + LM80_INIT_IN_5 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MIN_6 \
(LM80_INIT_IN_6 - LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_IN_MAX_6 \
(LM80_INIT_IN_6 + LM80_INIT_IN_6 * LM80_INIT_IN_PERCENTAGE / 100)
#define LM80_INIT_FAN_MIN_1 3000
#define LM80_INIT_FAN_MIN_2 3000
#define LM80_INIT_TEMP_OS_MAX 600
#define LM80_INIT_TEMP_OS_HYST 500
#define LM80_INIT_TEMP_HOT_MAX 700
#define LM80_INIT_TEMP_HOT_HYST 600
#ifdef MODULE
extern int init_module(void);
extern int cleanup_module(void);
#endif /* MODULE */
/* For each registered LM80, we need to keep some data in memory. That
data is pointed to by lm80_list[NR]->data. The structure itself is
dynamically allocated, at the same time when a new lm80 client is
allocated. */
struct lm80_data {
int sysctl_id;
struct semaphore update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
u8 in[7]; /* Register value */
u8 in_max[7]; /* Register value */
u8 in_min[7]; /* Register value */
u8 fan[2]; /* Register value */
u8 fan_min[2]; /* Register value */
u8 fan_div[2]; /* Register encoding, shifted right */
u16 temp; /* Register values, shifted right */
u8 temp_hot_max; /* Register value */
u8 temp_hot_hyst; /* Register value */
u8 temp_os_max; /* Register value */
u8 temp_os_hyst; /* Register value */
u16 alarms; /* Register encoding, combined */
};
static int __init sensors_lm80_init(void);
static int __init lm80_cleanup(void);
static int lm80_attach_adapter(struct i2c_adapter *adapter);
static int lm80_detect(struct i2c_adapter *adapter, int address, int kind);
static int lm80_detach_client(struct i2c_client *client);
static int lm80_command(struct i2c_client *client, unsigned int cmd,
void *arg);
static void lm80_inc_use (struct i2c_client *client);
static void lm80_dec_use (struct i2c_client *client);
static int lm80_read_value(struct i2c_client *client, u8 register);
static int lm80_write_value(struct i2c_client *client, u8 register, u8 value);
static void lm80_update_client(struct i2c_client *client);
static void lm80_init_client(struct i2c_client *client);
static void lm80_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm80_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm80_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm80_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm80_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static int lm80_id = 0;
static struct i2c_driver lm80_driver = {
/* name */ "LM80 sensor driver",
/* id */ I2C_DRIVERID_LM80,
/* flags */ I2C_DF_NOTIFY,
/* attach_adapter */ &lm80_attach_adapter,
/* detach_client */ &lm80_detach_client,
/* command */ &lm80_command,
/* inc_use */ &lm80_inc_use,
/* dec_use */ &lm80_dec_use
};
/* Used by lm80_init/cleanup */
static int __initdata lm80_initialized = 0;
/* The /proc/sys entries */
/* These files are created for each detected LM80. 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 lm80_dir_table_template[] = {
{ LM80_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_in },
{ LM80_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_fan },
{ LM80_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_fan },
{ LM80_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_temp },
{ LM80_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_fan_div },
{ LM80_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm80_alarms },
{ 0 }
};
int lm80_attach_adapter(struct i2c_adapter *adapter)
{
return sensors_detect(adapter,&addr_data,lm80_detect);
}
int lm80_detect(struct i2c_adapter *adapter, int address, int kind)
{
int i,cur;
struct i2c_client *new_client;
struct lm80_data *data;
int err=0;
const char *type_name,*client_name;
/* Make sure we aren't probing the ISA bus!! This is just a safety check
at this moment; sensors_detect really won't call us. */
#ifdef DEBUG
if (i2c_is_isa_adapter(adapter)) {
printk("lm80.o: lm80_detect called for an ISA bus adapter?!?\n");
return 0;
}
#endif
/* Here, we have to do the address registration check for the I2C bus.
But that is not yet implemented. */
/* 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 lm80_{read,write}_value. */
if (! (new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct lm80_data),
GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
data = (struct lm80_data *) (new_client + 1);
new_client->addr = address;
new_client->data = data;
new_client->adapter = adapter;
new_client->driver = &lm80_driver;
/* Now, we do the remaining detection. It is lousy. */
if (lm80_read_value(new_client,LM80_REG_ALARM2) & 0xc0)
goto ERROR1;
for (i = 0x2a; i <= 0x3d; i++) {
cur = i2c_smbus_read_byte_data(adapter,address,i);
if ((i2c_smbus_read_byte_data(adapter,address,i+0x40) != cur) ||
(i2c_smbus_read_byte_data(adapter,address,i+0x80) != cur) ||
(i2c_smbus_read_byte_data(adapter,address,i+0xc0) != cur))
goto ERROR1;
}
/* Determine the chip type - only one kind supported! */
if (kind <= 0)
kind = lm80;
if (kind == lm80) {
type_name = "lm80";
client_name = "LM80 chip";
} else {
#ifdef DEBUG
printk("lm80.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);
new_client->id = lm80_id++;
data->valid = 0;
init_MUTEX(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR3;
/* Register a new directory entry with module sensors */
if ((i = sensors_register_entry(new_client,type_name,
lm80_dir_table_template)) < 0) {
err = i;
goto ERROR4;
}
data->sysctl_id = i;
lm80_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 lm80_detach_client(struct i2c_client *client)
{
int err;
sensors_deregister_entry(((struct lm80_data *)(client->data))->sysctl_id);
if ((err = i2c_detach_client(client))) {
printk("lm80.o: Client deregistration failed, client not detached.\n");
return err;
}
kfree(client);
return 0;
}
/* No commands defined yet */
int lm80_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
void lm80_inc_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
void lm80_dec_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
int lm80_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client->adapter,client->addr, reg);
}
int lm80_write_value(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client->adapter, client->addr, reg,value);
}
/* Called when we have found a new LM80. It should set limits, etc. */
void lm80_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 */
lm80_write_value(client,LM80_REG_CONFIG,0x80);
/* Set 11-bit temperature resolution */
lm80_write_value(client,LM80_REG_RES,0x08);
lm80_write_value(client,LM80_REG_IN_MIN(0),IN_TO_REG(LM80_INIT_IN_MIN_0,0));
lm80_write_value(client,LM80_REG_IN_MAX(0),IN_TO_REG(LM80_INIT_IN_MAX_0,0));
lm80_write_value(client,LM80_REG_IN_MIN(1),IN_TO_REG(LM80_INIT_IN_MIN_1,1));
lm80_write_value(client,LM80_REG_IN_MAX(1),IN_TO_REG(LM80_INIT_IN_MAX_1,1));
lm80_write_value(client,LM80_REG_IN_MIN(2),IN_TO_REG(LM80_INIT_IN_MIN_2,2));
lm80_write_value(client,LM80_REG_IN_MAX(2),IN_TO_REG(LM80_INIT_IN_MAX_2,2));
lm80_write_value(client,LM80_REG_IN_MIN(3),IN_TO_REG(LM80_INIT_IN_MIN_3,3));
lm80_write_value(client,LM80_REG_IN_MAX(3),IN_TO_REG(LM80_INIT_IN_MAX_3,3));
lm80_write_value(client,LM80_REG_IN_MIN(4),IN_TO_REG(LM80_INIT_IN_MIN_4,4));
lm80_write_value(client,LM80_REG_IN_MAX(4),IN_TO_REG(LM80_INIT_IN_MAX_4,4));
lm80_write_value(client,LM80_REG_IN_MIN(5),IN_TO_REG(LM80_INIT_IN_MIN_5,5));
lm80_write_value(client,LM80_REG_IN_MAX(5),IN_TO_REG(LM80_INIT_IN_MAX_5,5));
lm80_write_value(client,LM80_REG_IN_MIN(6),IN_TO_REG(LM80_INIT_IN_MIN_6,6));
lm80_write_value(client,LM80_REG_IN_MAX(6),IN_TO_REG(LM80_INIT_IN_MAX_6,6));
lm80_write_value(client,LM80_REG_FAN1_MIN,FAN_TO_REG(LM80_INIT_FAN_MIN_1,2));
lm80_write_value(client,LM80_REG_FAN2_MIN,FAN_TO_REG(LM80_INIT_FAN_MIN_2,2));
lm80_write_value(client,LM80_REG_TEMP_HOT_MAX,
TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX));
lm80_write_value(client,LM80_REG_TEMP_HOT_HYST,
TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST));
lm80_write_value(client,LM80_REG_TEMP_OS_MAX,
TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_MAX));
lm80_write_value(client,LM80_REG_TEMP_OS_HYST,
TEMP_LIMIT_TO_REG(LM80_INIT_TEMP_OS_HYST));
/* Start monitoring */
lm80_write_value(client,LM80_REG_CONFIG,0x01);
}
void lm80_update_client(struct i2c_client *client)
{
struct lm80_data *data = client->data;
int i;
down(&data->update_lock);
if ((jiffies - data->last_updated > 2*HZ ) ||
(jiffies < data->last_updated) || ! data->valid) {
#ifdef DEBUG
printk("Starting lm80 update\n");
#endif
for (i = 0; i <= 6; i++) {
data->in[i] = lm80_read_value(client,LM80_REG_IN(i));
data->in_min[i] = lm80_read_value(client,LM80_REG_IN_MIN(i));
data->in_max[i] = lm80_read_value(client,LM80_REG_IN_MAX(i));
}
data->fan[0] = lm80_read_value(client,LM80_REG_FAN1);
data->fan_min[0] = lm80_read_value(client,LM80_REG_FAN1_MIN);
data->fan[1] = lm80_read_value(client,LM80_REG_FAN2);
data->fan_min[1] = lm80_read_value(client,LM80_REG_FAN2_MIN);
data->temp = (lm80_read_value(client,LM80_REG_TEMP) << 8) |
(lm80_read_value(client,LM80_REG_RES) & 0xf0);
data->temp_os_max = lm80_read_value(client,LM80_REG_TEMP_OS_MAX);
data->temp_os_hyst = lm80_read_value(client,LM80_REG_TEMP_OS_HYST);
data->temp_hot_max = lm80_read_value(client,LM80_REG_TEMP_HOT_MAX);
data->temp_hot_hyst = lm80_read_value(client,LM80_REG_TEMP_HOT_HYST);
i = lm80_read_value(client,LM80_REG_FANDIV);
data->fan_div[0] = (i >> 2) & 0x03;
data->fan_div[1] = (i >> 4) & 0x03;
data->alarms = lm80_read_value(client,LM80_REG_ALARM1) +
(lm80_read_value(client,LM80_REG_ALARM2) << 8);
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 lm80_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm80_data *data = client->data;
int nr = ctl_name - LM80_SYSCTL_IN0;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
lm80_update_client(client);
results[0] = IN_FROM_REG(data->in_min[nr],nr);
results[1] = IN_FROM_REG(data->in_max[nr],nr);
results[2] = IN_FROM_REG(data->in[nr],nr);
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->in_min[nr] = IN_TO_REG(results[0],nr);
lm80_write_value(client,LM80_REG_IN_MIN(nr),data->in_min[nr]);
}
if (*nrels_mag >= 2) {
data->in_max[nr] = IN_TO_REG(results[1],nr);
lm80_write_value(client,LM80_REG_IN_MAX(nr),data->in_max[nr]);
}
}
}
void lm80_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm80_data *data = client->data;
int nr = ctl_name - LM80_SYSCTL_FAN1 + 1;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm80_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]));
lm80_write_value(client,nr==1?LM80_REG_FAN1_MIN:LM80_REG_FAN2_MIN,
data->fan_min[nr-1]);
}
}
}
void lm80_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm80_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 4;
else if (operation == SENSORS_PROC_REAL_READ) {
lm80_update_client(client);
results[0] = TEMP_LIMIT_FROM_REG(data->temp_hot_max) * 10000;
results[1] = TEMP_LIMIT_FROM_REG(data->temp_hot_hyst) * 10000;
results[2] = TEMP_LIMIT_FROM_REG(data->temp_os_max) * 10000;
results[3] = TEMP_LIMIT_FROM_REG(data->temp_os_hyst) * 10000;
results[4] = TEMP_FROM_REG(data->temp);
*nrels_mag = 5;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->temp_hot_max = TEMP_LIMIT_TO_REG(results[0]);
lm80_write_value(client,LM80_REG_TEMP_HOT_MAX,data->temp_hot_max);
}
if (*nrels_mag >= 2) {
data->temp_hot_hyst = TEMP_LIMIT_TO_REG(results[1]);
lm80_write_value(client,LM80_REG_TEMP_HOT_HYST,data->temp_hot_hyst);
}
if (*nrels_mag >= 3) {
data->temp_os_max = TEMP_LIMIT_TO_REG(results[2]);
lm80_write_value(client,LM80_REG_TEMP_OS_MAX,data->temp_os_max);
}
if (*nrels_mag >= 4) {
data->temp_os_hyst = TEMP_LIMIT_TO_REG(results[3]);
lm80_write_value(client,LM80_REG_TEMP_OS_HYST,data->temp_os_hyst);
}
}
}
void lm80_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm80_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm80_update_client(client);
results[0] = ALARMS_FROM_REG(data->alarms);
*nrels_mag = 1;
}
}
void lm80_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm80_data *data = client->data;
int old;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm80_update_client(client);
results[0] = DIV_FROM_REG(data->fan_div[0]);
results[1] = DIV_FROM_REG(data->fan_div[1]);
results[2] = 2;
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
old = lm80_read_value(client,LM80_REG_FANDIV);
if (*nrels_mag >= 2) {
data->fan_div[1] = DIV_TO_REG(results[1]);
old = (old & 0xcf) | (data->fan_div[1] << 4);
}
if (*nrels_mag >= 1) {
data->fan_div[0] = DIV_TO_REG(results[0]);
old = (old & 0xf3) | (data->fan_div[0] << 2);
lm80_write_value(client,LM80_REG_FANDIV,old);
}
}
}
int __init sensors_lm80_init(void)
{
int res;
printk("lm80.o version %s (%s)\n",LM_VERSION,LM_DATE);
lm80_initialized = 0;
if ((res =i2c_add_driver(&lm80_driver))) {
printk("lm80.o: Driver registration failed, module not inserted.\n");
lm80_cleanup();
return res;
}
lm80_initialized ++;
return 0;
}
int __init lm80_cleanup(void)
{
int res;
if (lm80_initialized >= 1) {
if ((res = i2c_del_driver(&lm80_driver))) {
printk("lm80.o: Driver deregistration failed, module not removed.\n");
return res;
}
lm80_initialized --;
}
return 0;
}
EXPORT_NO_SYMBOLS;
#ifdef MODULE
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>");
MODULE_DESCRIPTION("LM80 driver");
int init_module(void)
{
return sensors_lm80_init();
}
int cleanup_module(void)
{
return lm80_cleanup();
}
#endif /* MODULE */
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