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lm-sensors/kernel/chips/adm9240.c
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/*
adm9240.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 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.
*/
/*
A couple notes about the ADM2940:
* It claims to be 'LM7x' register compatible. This must be in reference
to only the LM78, because it is missing stuff to emulate LM75's as well.
(like the Winbond W83781 does)
* This driver was written from rev. 0 of the PDF, but it seems well
written and complete (unlike the W83781 which is horrible and has
supposidly gone through a few revisions.. rev 0 of that one must
have been in crayon on construction paper...)
* All analog inputs can range from 0 to 2.5, eventhough some inputs are
marked as being 5V, 12V, etc. I don't have any real voltages going
into my prototype, so I'm not sure that things are computed right,
but at least the limits seem to be working OK.
* Another curiousity is that the fan_div seems to be read-only. I.e.,
any written value to it doesn't seem to make any difference. The
fan_div seems to be 'stuck' at 2 (which isn't a bad value in most cases).
--Phil
*/
#include <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 "smbus.h"
#include "version.h"
#include "i2c-isa.h"
#include "sensors.h"
#include "i2c.h"
#include "compat.h"
/* Many ADM9240 constants specified below */
#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2)
#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2)
#define ADM9240_REG_IN(nr) (0x20 + (nr))
/* The ADM9240 registers */
#define ADM9240_REG_TEST 0x15
#define ADM9240_REG_ANALOG_OUT 0x19
/* These are all read-only */
#define ADM9240_REG_2_5V 0x20
#define ADM9240_REG_VCCP1 0x21
#define ADM9240_REG_3_3V 0x22
#define ADM9240_REG_5V 0x23
#define ADM9240_REG_12V 0x24
#define ADM9240_REG_VCCP2 0x25
#define ADM9240_REG_TEMP 0x27
#define ADM9240_REG_FAN1 0x28
#define ADM9240_REG_FAN2 0x29
#define ADM9240_REG_COMPANY_ID 0x3E /* Should always read 0x23 */
#define ADM9240_REG_DIE_REV 0x3F
/* These are read/write */
#define ADM9240_REG_2_5V_HIGH 0x2B
#define ADM9240_REG_2_5V_LOW 0x2C
#define ADM9240_REG_VCCP1_HIGH 0x2D
#define ADM9240_REG_VCCP1_LOW 0x2E
#define ADM9240_REG_3_3V_HIGH 0x2F
#define ADM9240_REG_3_3V_LOW 0x30
#define ADM9240_REG_5V_HIGH 0x31
#define ADM9240_REG_5V_LOW 0x32
#define ADM9240_REG_12V_HIGH 0x33
#define ADM9240_REG_12V_LOW 0x34
#define ADM9240_REG_VCCP2_HIGH 0x35
#define ADM9240_REG_VCCP2_LOW 0x36
#define ADM9240_REG_TOS 0x39
#define ADM9240_REG_THYST 0x3A
#define ADM9240_REG_FAN1_MIN 0x3B
#define ADM9240_REG_FAN2_MIN 0x3C
#define ADM9240_REG_CONFIG 0x40
#define ADM9240_REG_INT1_STAT 0x41
#define ADM9240_REG_INT2_STAT 0x42
#define ADM9240_REG_INT1_MASK 0x43
#define ADM9240_REG_INT2_MASK 0x44
#define ADM9240_REG_COMPAT 0x45 /* dummy compat. register for other drivers? */
#define ADM9240_REG_CHASSIS_CLEAR 0x46
#define ADM9240_REG_VID_FAN_DIV 0x47
#define ADM9240_REG_I2C_ADDR 0x48
#define ADM9240_REG_VID4 0x49
#define ADM9240_REG_TEMP_CONFIG 0x4B
/* Conversions. Rounding is only done on the TO_REG variants. */
#define IN_TO_REG(val,nr) ((val) & 0xff)
#define IN_FROM_REG(val,nr) (val)
#define FAN_TO_REG(val,div) ((val)==0?255:\
((1350000+(val)*(div)/2)/((val)*(div))) & 0xff)
#define FAN_FROM_REG(val,div) ((val)==0?-1:\
(val)==255?0:1350000/((div)*(val)))
#define TEMP_FROM_REG(val) adm9240_temp_from_reg(val)
#define TEMP_LIMIT_TO_REG(val) (((val)<0?(((val)-50)/100)&0xff:\
((val)+50)/100) & 0xff)
#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*100)
#define ALARMS_FROM_REG(val) (val)
#define DIV_FROM_REG(val) (1 << val)
#define DIV_TO_REG(val) (val==1?0:(val==2?1:(val==4?2:3)))
#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\
(val)>=0x06?0:205-(val)*5)
/* Initial limits */
#define ADM9240_INIT_IN_0 190
#define ADM9240_INIT_IN_1 190
#define ADM9240_INIT_IN_2 190
#define ADM9240_INIT_IN_3 190
#define ADM9240_INIT_IN_4 190
#define ADM9240_INIT_IN_5 190
#define ADM9240_INIT_IN_PERCENTAGE 10
#define ADM9240_INIT_IN_MIN_0 \
(ADM9240_INIT_IN_0 - ADM9240_INIT_IN_0 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_0 \
(ADM9240_INIT_IN_0 + ADM9240_INIT_IN_0 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MIN_1 \
(ADM9240_INIT_IN_1 - ADM9240_INIT_IN_1 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_1 \
(ADM9240_INIT_IN_1 + ADM9240_INIT_IN_1 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MIN_2 \
(ADM9240_INIT_IN_2 - ADM9240_INIT_IN_2 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_2 \
(ADM9240_INIT_IN_2 + ADM9240_INIT_IN_2 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MIN_3 \
(ADM9240_INIT_IN_3 - ADM9240_INIT_IN_3 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_3 \
(ADM9240_INIT_IN_3 + ADM9240_INIT_IN_3 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MIN_4 \
(ADM9240_INIT_IN_4 - ADM9240_INIT_IN_4 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_4 \
(ADM9240_INIT_IN_4 + ADM9240_INIT_IN_4 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MIN_5 \
(ADM9240_INIT_IN_5 - ADM9240_INIT_IN_5 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_IN_MAX_5 \
(ADM9240_INIT_IN_5 + ADM9240_INIT_IN_5 * ADM9240_INIT_IN_PERCENTAGE / 100)
#define ADM9240_INIT_FAN_MIN_1 3000
#define ADM9240_INIT_FAN_MIN_2 3000
#define ADM9240_INIT_TEMP_OS_MAX 600
#define ADM9240_INIT_TEMP_OS_HYST 500
#define ADM9240_INIT_TEMP_HOT_MAX 700
#define ADM9240_INIT_TEMP_HOT_HYST 600
#ifdef MODULE
extern int init_module(void);
extern int cleanup_module(void);
#endif /* MODULE */
/* For each registered ADM9240, we need to keep some data in memory. That
data is pointed to by adm9240_list[NR]->data. The structure itself is
dynamically allocated, at the same time when a new adm9240 client is
allocated. */
struct adm9240_data {
int sysctl_id;
struct semaphore update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
u8 in[6]; /* Register value */
u8 in_max[6]; /* Register value */
u8 in_min[6]; /* Register value */
u8 fan[2]; /* Register value */
u8 fan_min[2]; /* Register value */
u8 fan_div[2]; /* Register encoding, shifted right */
int temp; /* Temp, shifted right */
u8 temp_os_max; /* Register value */
u8 temp_os_hyst; /* Register value */
u16 alarms; /* Register encoding, combined */
u8 analog_out; /* Register value */
u8 vid; /* Register value combined */
};
static int adm9240_init(void);
static int adm9240_cleanup(void);
static int adm9240_attach_adapter(struct i2c_adapter *adapter);
static int adm9240_detach_client(struct i2c_client *client);
static int adm9240_new_client(struct i2c_adapter *adapter,
struct i2c_client *new_client);
static void adm9240_remove_client(struct i2c_client *client);
static int adm9240_command(struct i2c_client *client, unsigned int cmd,
void *arg);
static void adm9240_inc_use (struct i2c_client *client);
static void adm9240_dec_use (struct i2c_client *client);
static long adm9240_temp_from_reg(u16 regs);
static int adm9240_read_value(struct i2c_client *client, u8 register);
static int adm9240_write_value(struct i2c_client *client, u8 register, u8 value);
static void adm9240_update_client(struct i2c_client *client);
static void adm9240_init_client(struct i2c_client *client);
static void adm9240_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_analog_out(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm9240_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
/* I choose here for semi-static ADM9240 allocation. Complete dynamic
allocation could also be used; the code needed for this would probably
take more memory than the datastructure takes now. */
#define MAX_ADM9240_NR 4
static struct i2c_client *adm9240_list[MAX_ADM9240_NR];
/* The driver. I choose to use type i2c_driver, as at is identical to both
smbus_driver and isa_driver, and clients could be of either kind */
static struct i2c_driver adm9240_driver = {
/* name */ "ADM9240 sensor driver",
/* id */ I2C_DRIVERID_ADM9240,
/* flags */ DF_NOTIFY,
/* attach_adapter */ &adm9240_attach_adapter,
/* detach_client */ &adm9240_detach_client,
/* command */ &adm9240_command,
/* inc_use */ &adm9240_inc_use,
/* dec_use */ &adm9240_dec_use
};
/* Used by adm9240_init/cleanup */
static int adm9240_initialized = 0;
/* The /proc/sys entries */
/* These files are created for each detected ADM9240. This is just a template;
though at first sight, you might think we could use a statically
allocated list, we need some way to get back to the parent - which
is done through one of the 'extra' fields which are initialized
when a new copy is allocated. */
static ctl_table adm9240_dir_table_template[] = {
{ ADM9240_SYSCTL_IN0, "2.5V", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_IN1, "Vccp1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_IN2, "3.3V", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_IN3, "5V", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_IN4, "12V", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_IN5, "Vccp2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_in },
{ ADM9240_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_fan },
{ ADM9240_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_fan },
{ ADM9240_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_temp },
{ ADM9240_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_fan_div },
{ ADM9240_SYSCTL_ALARMS, "alarms", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_alarms },
{ ADM9240_SYSCTL_ANALOG_OUT, "analog_out", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_analog_out },
{ ADM9240_SYSCTL_VID, "vid", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &adm9240_vid },
{ 0 }
};
int adm9240_attach_adapter(struct i2c_adapter *adapter)
{
int address,err,temp;
struct i2c_client *new_client;
const char *type_name,*client_name;
err = 0;
/* The address of the ADM2940 must at least start somewhere in
0x2C to 0x2F, but can be changed to be anyelse after that.
(But, why??) */
for (address = 0x2C; (! err) && (address <= 0x2f); address ++) {
/* Later on, we will keep a list of registered addresses for each
adapter, and check whether they are used here */
if (smbus_read_byte_data(adapter,address,ADM9240_REG_COMPANY_ID) != 0x23)
continue;
temp=smbus_read_byte_data(adapter,address,ADM9240_REG_DIE_REV);
printk("adm9240.o: ADM9240 detected with die rev.: 0x%X\n",temp);
type_name = "adm9240";
client_name = "ADM9240 chip";
/* Allocate space for a new client structure. To counter memory
fragmentation somewhat, we only do one kmalloc. */
if (! (new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct adm9240_data),
GFP_KERNEL))) {
err = -ENOMEM;
continue;
}
/* Fill the new client structure with data */
new_client->data = (struct adm9240_data *) (new_client + 1);
new_client->addr = address;
strcpy(new_client->name,client_name);
if ((err = adm9240_new_client(adapter,new_client)))
goto ERROR2;
/* Tell i2c-core a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR3;
/* Register a new directory entry with module sensors */
if ((err = sensors_register_entry(new_client,type_name,
adm9240_dir_table_template)) < 0)
goto ERROR4;
((struct adm9240_data *) (new_client->data))->sysctl_id = err;
err = 0;
/* Initialize the ADM9240 chip */
adm9240_init_client(new_client);
continue;
/* 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:
adm9240_remove_client((struct i2c_client *) new_client);
ERROR2:
kfree(new_client);
}
return err;
}
int adm9240_detach_client(struct i2c_client *client)
{
int err,i;
for (i = 0; i < MAX_ADM9240_NR; i++)
if (client == adm9240_list[i])
break;
if ((i == MAX_ADM9240_NR)) {
printk("adm9240.o: Client to detach not found.\n");
return -ENOENT;
}
sensors_deregister_entry(((struct adm9240_data *)(client->data))->sysctl_id);
if ((err = i2c_detach_client(client))) {
printk("adm9240.o: Client deregistration failed, client not detached.\n");
return err;
}
adm9240_remove_client(client);
kfree(client);
return 0;
}
/* Find a free slot, and initialize most of the fields */
int adm9240_new_client(struct i2c_adapter *adapter,
struct i2c_client *new_client)
{
int i;
struct adm9240_data *data;
/* First, seek out an empty slot */
for(i = 0; i < MAX_ADM9240_NR; i++)
if (! adm9240_list[i])
break;
if (i == MAX_ADM9240_NR) {
printk("adm9240.o: No empty slots left, recompile and heighten "
"MAX_ADM9240_NR!\n");
return -ENOMEM;
}
adm9240_list[i] = new_client;
new_client->id = i;
new_client->adapter = adapter;
new_client->driver = &adm9240_driver;
data = new_client->data;
data->valid = 0;
data->update_lock = MUTEX;
return 0;
}
/* Inverse of adm9240_new_client */
void adm9240_remove_client(struct i2c_client *client)
{
int i;
for (i = 0; i < MAX_ADM9240_NR; i++)
if (client == adm9240_list[i])
adm9240_list[i] = NULL;
}
/* No commands defined yet */
int adm9240_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
void adm9240_inc_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
void adm9240_dec_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
long adm9240_temp_from_reg(u16 temp)
{
if (temp < 256)
return (((temp & 0x1fe) >> 1) * 10) + ((temp & 1) * 5);
else
return ((((temp & 0x01fe) >> 1) - 255) * 10) - ((temp & 1) * 5);
}
int adm9240_read_value(struct i2c_client *client, u8 reg)
{
return 0xFF & smbus_read_byte_data(client->adapter,client->addr, reg);
}
int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
{
return smbus_write_byte_data(client->adapter, client->addr, reg,value);
}
/* Called when we have found a new ADM9240. It should set limits, etc. */
void adm9240_init_client(struct i2c_client *client)
{
/* Reset all except Watchdog values and last conversion values
This sets fan-divs to 2, among others. This makes most other
initializations unnecessary */
adm9240_write_value(client,ADM9240_REG_CONFIG,0x80);
adm9240_write_value(client,ADM9240_REG_IN_MIN(0),IN_TO_REG(ADM9240_INIT_IN_MIN_0,0));
adm9240_write_value(client,ADM9240_REG_IN_MAX(0),IN_TO_REG(ADM9240_INIT_IN_MAX_0,0));
adm9240_write_value(client,ADM9240_REG_IN_MIN(1),IN_TO_REG(ADM9240_INIT_IN_MIN_1,1));
adm9240_write_value(client,ADM9240_REG_IN_MAX(1),IN_TO_REG(ADM9240_INIT_IN_MAX_1,1));
adm9240_write_value(client,ADM9240_REG_IN_MIN(2),IN_TO_REG(ADM9240_INIT_IN_MIN_2,2));
adm9240_write_value(client,ADM9240_REG_IN_MAX(2),IN_TO_REG(ADM9240_INIT_IN_MAX_2,2));
adm9240_write_value(client,ADM9240_REG_IN_MIN(3),IN_TO_REG(ADM9240_INIT_IN_MIN_3,3));
adm9240_write_value(client,ADM9240_REG_IN_MAX(3),IN_TO_REG(ADM9240_INIT_IN_MAX_3,3));
adm9240_write_value(client,ADM9240_REG_IN_MIN(4),IN_TO_REG(ADM9240_INIT_IN_MIN_4,4));
adm9240_write_value(client,ADM9240_REG_IN_MAX(4),IN_TO_REG(ADM9240_INIT_IN_MAX_4,4));
adm9240_write_value(client,ADM9240_REG_IN_MIN(5),IN_TO_REG(ADM9240_INIT_IN_MIN_5,5));
adm9240_write_value(client,ADM9240_REG_IN_MAX(5),IN_TO_REG(ADM9240_INIT_IN_MAX_5,5));
adm9240_write_value(client,ADM9240_REG_FAN1_MIN,FAN_TO_REG(ADM9240_INIT_FAN_MIN_1,2));
adm9240_write_value(client,ADM9240_REG_FAN2_MIN,FAN_TO_REG(ADM9240_INIT_FAN_MIN_2,2));
adm9240_write_value(client,ADM9240_REG_TOS,
TEMP_LIMIT_TO_REG(ADM9240_INIT_TEMP_OS_MAX));
adm9240_write_value(client,ADM9240_REG_THYST,
TEMP_LIMIT_TO_REG(ADM9240_INIT_TEMP_OS_HYST));
adm9240_write_value(client,ADM9240_REG_TEMP_CONFIG,0x00);
/* Start monitoring */
adm9240_write_value(client,ADM9240_REG_CONFIG,0x01);
}
void adm9240_update_client(struct i2c_client *client)
{
struct adm9240_data *data = client->data;
u8 i;
down(&data->update_lock);
if ((jiffies - data->last_updated > 2*HZ ) ||
(jiffies < data->last_updated) || ! data->valid) {
#ifdef DEBUG
printk("Starting adm9240 update\n");
#endif
for (i = 0; i <= 5; i++) {
data->in[i] = adm9240_read_value(client,ADM9240_REG_IN(i));
data->in_min[i] = adm9240_read_value(client,ADM9240_REG_IN_MIN(i));
data->in_max[i] = adm9240_read_value(client,ADM9240_REG_IN_MAX(i));
}
data->fan[0] = adm9240_read_value(client,ADM9240_REG_FAN1);
data->fan_min[0] = adm9240_read_value(client,ADM9240_REG_FAN1_MIN);
data->fan[1] = adm9240_read_value(client,ADM9240_REG_FAN2);
data->fan_min[1] = adm9240_read_value(client,ADM9240_REG_FAN2_MIN);
data->temp = (adm9240_read_value(client,ADM9240_REG_TEMP) << 1) +
((adm9240_read_value(client,ADM9240_REG_TEMP_CONFIG) & 0x80) >> 7);
data->temp_os_max = adm9240_read_value(client,ADM9240_REG_TOS);
data->temp_os_hyst = adm9240_read_value(client,ADM9240_REG_THYST);
i = adm9240_read_value(client,ADM9240_REG_VID_FAN_DIV);
data->fan_div[0] = (i >> 4) & 0x03;
data->fan_div[1] = (i >> 6) & 0x03;
data->vid = i & 0x0f;
data->vid |= (adm9240_read_value(client,ADM9240_REG_VID4) & 0x01) << 4;
data->alarms = adm9240_read_value(client,ADM9240_REG_INT1_STAT) +
(adm9240_read_value(client,ADM9240_REG_INT2_STAT) << 8);
data->analog_out = adm9240_read_value(client,ADM9240_REG_ANALOG_OUT);
data->last_updated = jiffies;
data->valid = 1;
}
up(&data->update_lock);
}
/* The next few functions are the call-back functions of the /proc/sys and
sysctl files. Which function is used is defined in the ctl_table in
the extra1 field.
Each function must return the magnitude (power of 10 to divide the date
with) if it is called with operation==SENSORS_PROC_REAL_INFO. It must
put a maximum of *nrels elements in results reflecting the data of this
file, and set *nrels to the number it actually put in it, if operation==
SENSORS_PROC_REAL_READ. Finally, it must get upto *nrels elements from
results and write them to the chip, if operations==SENSORS_PROC_REAL_WRITE.
Note that on SENSORS_PROC_REAL_READ, I do not check whether results is
large enough (by checking the incoming value of *nrels). This is not very
good practice, but as long as you put less than about 5 values in results,
you can assume it is large enough. */
void adm9240_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int scales[6]={250, 270, 330, 500, 1200, 270};
struct adm9240_data *data = client->data;
int nr = ctl_name - ADM9240_SYSCTL_IN0;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = IN_FROM_REG(data->in_min[nr],nr) * scales[nr] / 192;
results[1] = IN_FROM_REG(data->in_max[nr],nr) * scales[nr] / 192;
results[2] = IN_FROM_REG(data->in[nr],nr) * scales[nr] / 192;
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->in_min[nr] = IN_TO_REG((results[0]*192)/scales[nr],nr);
adm9240_write_value(client,ADM9240_REG_IN_MIN(nr),data->in_min[nr]);
}
if (*nrels_mag >= 2) {
data->in_max[nr] = IN_TO_REG((results[1]*192)/scales[nr],nr);
adm9240_write_value(client,ADM9240_REG_IN_MAX(nr),data->in_max[nr]);
}
}
}
void adm9240_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
int nr = ctl_name - ADM9240_SYSCTL_FAN1 + 1;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = FAN_FROM_REG(data->fan_min[nr-1],
DIV_FROM_REG(data->fan_div[nr-1]));
results[1] = FAN_FROM_REG(data->fan[nr-1],
DIV_FROM_REG(data->fan_div[nr-1]));
*nrels_mag = 2;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->fan_min[nr-1] = FAN_TO_REG(results[0],
DIV_FROM_REG(data->fan_div[nr-1]));
adm9240_write_value(client,nr==1?ADM9240_REG_FAN1_MIN:ADM9240_REG_FAN2_MIN,
data->fan_min[nr-1]);
}
}
}
void adm9240_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 1;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = TEMP_LIMIT_FROM_REG(data->temp_os_max);
results[1] = TEMP_LIMIT_FROM_REG(data->temp_os_hyst);
results[2] = TEMP_FROM_REG(data->temp);
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->temp_os_max = TEMP_LIMIT_TO_REG(results[0]);
adm9240_write_value(client,ADM9240_REG_TOS,data->temp_os_max);
}
if (*nrels_mag >= 2) {
data->temp_os_hyst = TEMP_LIMIT_TO_REG(results[1]);
adm9240_write_value(client,ADM9240_REG_THYST,data->temp_os_hyst);
}
}
}
void adm9240_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = ALARMS_FROM_REG(data->alarms);
*nrels_mag = 1;
}
}
void adm9240_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
int old;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = DIV_FROM_REG(data->fan_div[0]);
results[1] = DIV_FROM_REG(data->fan_div[1]);
*nrels_mag = 2;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
old = adm9240_read_value(client,ADM9240_REG_VID_FAN_DIV);
if (*nrels_mag >= 2) {
data->fan_div[1] = DIV_TO_REG(results[1]);
old = (old & 0xcf) | (data->fan_div[1] << 6);
}
if (*nrels_mag >= 1) {
data->fan_div[0] = DIV_TO_REG(results[0]);
old = (old & 0x3f) | (data->fan_div[0] << 4);
adm9240_write_value(client,ADM9240_REG_VID_FAN_DIV,old);
}
}
}
void adm9240_analog_out(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = data->analog_out;
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->analog_out = results[0];
adm9240_write_value(client,ADM9240_REG_ANALOG_OUT,data->analog_out);
}
}
}
void adm9240_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm9240_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
adm9240_update_client(client);
results[0] = VID_FROM_REG(data->vid);
*nrels_mag = 1;
}
}
int adm9240_init(void)
{
int res;
printk("adm9240.o version %s (%s)\n",LM_VERSION,LM_DATE);
adm9240_initialized = 0;
if ((res =i2c_add_driver(&adm9240_driver))) {
printk("adm9240.o: Driver registration failed, module not inserted.\n");
adm9240_cleanup();
return res;
}
adm9240_initialized ++;
return 0;
}
int adm9240_cleanup(void)
{
int res;
if (adm9240_initialized >= 1) {
if ((res = i2c_del_driver(&adm9240_driver))) {
printk("adm9240.o: Driver deregistration failed, module not removed.\n");
return res;
}
adm9240_initialized --;
}
return 0;
}
#ifdef MODULE
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>");
MODULE_DESCRIPTION("ADM9240 driver");
int init_module(void)
{
return adm9240_init();
}
int cleanup_module(void)
{
return adm9240_cleanup();
}
#endif /* MODULE */
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