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lm-sensors/kernel/chips/sis5595.c
T
Frodo Looijaard 24792039f6 Adrian's copyright patch applied 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@207 7894878c-1315-0410-8ee3-d5d059ff63e0
1999-02-08 22:50:29 +00:00

807 lines
26 KiB
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/*
sis5595.c - Part of lm_sensors, Linux kernel modules
for hardware monitoring
Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>,
Kyösti Mälkki <kmalkki@cc.hut.fi>
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 <linux/pci.h>
#if LINUX_VERSION_CODE < 0x020136 /* 2.1.54 */
#include <linux/bios32.h>
#endif
#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"
/*
SiS southbridge has lm78 integrated on the same IC,
This drives is a customized copy of lm78.c
*/
/* Many LM78 constants specified below */
/* Length of ISA address segment */
#define LM78_EXTENT 8
#define LM78_BASE_REG 0x68
/* Where are the ISA address/data registers relative to the base address */
#define LM78_ADDR_REG_OFFSET 5
#define LM78_DATA_REG_OFFSET 6
/* The LM78 registers */
#define LM78_REG_IN_MAX(nr) (0x2b + (nr) * 2)
#define LM78_REG_IN_MIN(nr) (0x2c + (nr) * 2)
#define LM78_REG_IN(nr) (0x20 + (nr))
#define LM78_REG_FAN_MIN(nr) (0x3a + (nr))
#define LM78_REG_FAN(nr) (0x27 + (nr))
#define LM78_REG_TEMP 0x27
#define LM78_REG_TEMP_OVER 0x39
#define LM78_REG_TEMP_HYST 0x3a
#define LM78_REG_ALARM1 0x41
/* Not available in SiS 5595
#define LM78_REG_ALARM2 0x42
*/
#define LM78_REG_VID_FANDIV 0x47
#define LM78_REG_CONFIG 0x40
/* Conversions. Rounding is only done on the TO_REG variants. */
#define IN_TO_REG(val) (((val) * 10 + 8)/16)
#define IN_FROM_REG(val) (((val) * 16) / 10)
#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/((val)*(div)))
#define TEMP_TO_REG(val) (((val)<0?(((val)-5)/10)&0xff:((val)+5)/10) & 0xff)
#define TEMP_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10)
#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\
(val)>=0x06?0:205-(val)*5)
#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. To keep them sane, we use the 'standard' translation as
specified in the LM78 sheet. Use the config file to set better limits. */
#define LM78_INIT_IN_0 (vid==350?280:vid)
#define LM78_INIT_IN_1 (vid==350?280:vid)
#define LM78_INIT_IN_2 330
#define LM78_INIT_IN_3 (((500) * 100)/168)
#define LM78_INIT_IN_4 (((1200) * 10)/38)
#define LM78_INIT_IN_5 (((-1200) * -604)/2100)
#define LM78_INIT_IN_6 (((-500) * -604)/909)
#define LM78_INIT_IN_PERCENTAGE 10
#define LM78_INIT_IN_MIN_0 \
(LM78_INIT_IN_0 - LM78_INIT_IN_0 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_0 \
(LM78_INIT_IN_0 + LM78_INIT_IN_0 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_1 \
(LM78_INIT_IN_1 - LM78_INIT_IN_1 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_1 \
(LM78_INIT_IN_1 + LM78_INIT_IN_1 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_2 \
(LM78_INIT_IN_2 - LM78_INIT_IN_2 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_2 \
(LM78_INIT_IN_2 + LM78_INIT_IN_2 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_3 \
(LM78_INIT_IN_3 - LM78_INIT_IN_3 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_3 \
(LM78_INIT_IN_3 + LM78_INIT_IN_3 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_4 \
(LM78_INIT_IN_4 - LM78_INIT_IN_4 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_4 \
(LM78_INIT_IN_4 + LM78_INIT_IN_4 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_5 \
(LM78_INIT_IN_5 - LM78_INIT_IN_5 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_5 \
(LM78_INIT_IN_5 + LM78_INIT_IN_5 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MIN_6 \
(LM78_INIT_IN_6 - LM78_INIT_IN_6 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_IN_MAX_6 \
(LM78_INIT_IN_6 + LM78_INIT_IN_6 * LM78_INIT_IN_PERCENTAGE / 100)
#define LM78_INIT_FAN_MIN_1 3000
#define LM78_INIT_FAN_MIN_2 3000
#define LM78_INIT_FAN_MIN_3 3000
#define LM78_INIT_TEMP_OVER 600
#define LM78_INIT_TEMP_HYST 500
#ifdef MODULE
extern int init_module(void);
extern int cleanup_module(void);
#endif /* MODULE */
/* This module may seem overly long and complicated. In fact, it is not so
bad. Quite a lot of bookkeeping is done. A real driver can often cut
some corners. */
/* Types of chips supported */
enum lm78_type { lm78 };
/* For each registered LM78, we need to keep some data in memory. That
data is pointed to by lm78_list[NR]->data. The structure itself is
dynamically allocated, at the same time when a new lm78 client is
allocated. */
struct lm78_data {
struct semaphore lock;
int sysctl_id;
enum lm78_type type;
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[3]; /* Register value */
u8 fan_min[3]; /* Register value */
u8 temp; /* Register value */
u8 temp_over; /* Register value */
u8 temp_hyst; /* Register value */
u8 fan_div[3]; /* Register encoding, shifted right */
u8 vid; /* Register encoding, combined */
u16 alarms; /* Register encoding, combined */
};
static int lm78_init(void);
static int lm78_cleanup(void);
static int lm78_attach_adapter(struct i2c_adapter *adapter);
static int lm78_detect_isa(struct isa_adapter *adapter);
static int lm78_detach_client(struct i2c_client *client);
static int lm78_detach_isa(struct isa_client *client);
static int lm78_new_client(struct i2c_adapter *adapter,
struct i2c_client *new_client);
static void lm78_remove_client(struct i2c_client *client);
static int lm78_command(struct i2c_client *client, unsigned int cmd,
void *arg);
static void lm78_inc_use (struct i2c_client *client);
static void lm78_dec_use (struct i2c_client *client);
static int lm78_read_value(struct i2c_client *client, u8 register);
static int lm78_write_value(struct i2c_client *client, u8 register, u8 value);
static void lm78_update_client(struct i2c_client *client);
static void lm78_init_client(struct i2c_client *client);
static void lm78_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm78_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm78_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm78_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm78_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void lm78_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
/* I choose here for semi-static LM78 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_LM78_NR 4
static struct i2c_client *lm78_list[MAX_LM78_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 lm78_driver = {
/* name */ "SiS 5595",
/* id */ I2C_DRIVERID_SIS5595,
/* flags */ DF_NOTIFY,
/* attach_adapter */ &lm78_attach_adapter,
/* detach_client */ &lm78_detach_client,
/* command */ &lm78_command,
/* inc_use */ &lm78_inc_use,
/* dec_use */ &lm78_dec_use
};
/* Used by lm78_init/cleanup */
static int lm78_initialized = 0;
/* The /proc/sys entries */
/* These files are created for each detected LM78. 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 lm78_dir_table_template[] = {
{ LM78_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_in },
{ LM78_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_fan },
{ LM78_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_fan },
{ LM78_SYSCTL_FAN3, "fan3", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_fan },
{ LM78_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_temp },
{ LM78_SYSCTL_VID, "vid", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_vid },
{ LM78_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_fan_div },
{ LM78_SYSCTL_ALARMS, "alarms", NULL, 0, 0644, NULL, &sensors_proc_real,
&sensors_sysctl_real, NULL, &lm78_alarms },
{ 0 }
};
/* This is called when the module is loaded */
int lm78_attach_adapter(struct i2c_adapter *adapter)
{
return lm78_detect_isa((struct isa_adapter *) adapter);
}
/* This is called when the module is loaded */
int lm78_detach_client(struct i2c_client *client)
{
return lm78_detach_isa((struct isa_client *) client);
}
/* Locate SiS bridge and correct base address for LM78 */
#if LINUX_VERSION_CODE >= 0x020136 /* 2.1.54 */
static int find_sis(int *address)
{
struct pci_dev *s_bridge;
u16 val;
if (! pci_present())
return -ENODEV;
s_bridge = pci_find_device(
PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, NULL);
if (! s_bridge)
return -ENODEV;
if ( PCIBIOS_SUCCESSFUL !=
pci_read_config_word(s_bridge, LM78_BASE_REG, &val))
return -ENODEV;
*address = (val & 0xfff8);
return 0;
}
#else
static int find_sis(int *address)
{
unsigned char SIS_bus, SIS_devfn;
u16 val;
if (! pcibios_present())
return -ENODEV;
if(pcibios_find_device(
PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, 0,
&SIS_bus, &SIS_devfn))
return -ENODEV;
if ( PCIBIOS_SUCCESSFUL !=
pcibios_read_config_word(SIS_bus, SIS_devfn, LM78_BASE_REG, &val))
return -ENODEV;
*address = (val & 0xfff8);
return 0;
}
#endif
/* Register and initialize lm78 it. */
int lm78_detect_isa(struct isa_adapter *adapter)
{
int address = 0, err = 0;
struct isa_client *new_client;
enum lm78_type type;
const char *type_name;
const char *client_name;
/* OK, this is detection. */
if (err=find_sis(&address)) {
printk("SiS 5595 southbridge not found\n");
return err;
}
if ( (err = check_region(address, LM78_EXTENT)) < 0 )
{
printk("sis5595.o: IO 0x%x-0x%x already in use\n",
address, address + LM78_EXTENT);
return err;
}
/*
printk("sis5595.o: lm78 io base at 0x%4x\n", address);
*/
type = lm78;
type_name = "sis5595";
client_name = "SiS 5595 Sensor";
request_region(address, LM78_EXTENT, type_name);
/* Allocate space for a new client structure */
if (! (new_client = kmalloc(sizeof(struct isa_client) +
sizeof(struct lm78_data),
GFP_KERNEL)))
{
err=-ENOMEM;
goto ERROR1;
}
/* Fill the new client structure with data */
new_client->data = (struct lm78_data *) (new_client + 1);
new_client->addr = 0;
strcpy(new_client->name,client_name);
((struct lm78_data *) (new_client->data))->type = type;
new_client->isa_addr = address;
if ((err = lm78_new_client((struct i2c_adapter *) adapter,
(struct i2c_client *) new_client)))
goto ERROR2;
/* Tell i2c-core a new client has arrived */
if ((err = isa_attach_client(new_client)))
goto ERROR3;
/* Register a new directory entry with module sensors */
if ((err = sensors_register_entry((struct i2c_client *) new_client,
type_name,
lm78_dir_table_template)) < 0)
goto ERROR4;
((struct lm78_data *) (new_client->data)) -> sysctl_id = err;
err = 0;
/* Initialize the LM78 chip */
lm78_init_client((struct i2c_client *) new_client);
return err;
/* OK, this is not exactly good programming practice, usually. But it is
very code-efficient in this case. */
ERROR4:
isa_detach_client(new_client);
ERROR3:
lm78_remove_client((struct i2c_client *) new_client);
ERROR2:
kfree(new_client);
ERROR1:
release_region(address, LM78_EXTENT);
return err;
}
/* Deregister and remove a LM78 client */
int lm78_detach_isa(struct isa_client *client)
{
int err,i;
for (i = 0; i < MAX_LM78_NR; i++)
if ((client == (struct isa_client *) (lm78_list[i])))
break;
if (i == MAX_LM78_NR) {
printk("sis5595.o: Client to detach not found.\n");
return -ENOENT;
}
sensors_deregister_entry(((struct lm78_data *)(client->data))->sysctl_id);
if ((err = isa_detach_client(client))) {
printk("sis5595.o: Client deregistration failed, client not detached.\n");
return err;
}
lm78_remove_client((struct i2c_client *) client);
release_region(client->isa_addr,LM78_EXTENT);
kfree(client);
return 0;
}
/* Find a free slot, and initialize most of the fields */
int lm78_new_client(struct i2c_adapter *adapter,
struct i2c_client *new_client)
{
int i;
struct lm78_data *data;
/* First, seek out an empty slot */
for(i = 0; i < MAX_LM78_NR; i++)
if (! lm78_list[i])
break;
if (i == MAX_LM78_NR) {
printk("sis5595.o: No empty slots left, recompile and heighten "
"MAX_LM78_NR!\n");
return -ENOMEM;
}
lm78_list[i] = new_client;
new_client->id = i;
new_client->adapter = adapter;
new_client->driver = &lm78_driver;
data = new_client->data;
data->valid = 0;
data->lock = MUTEX;
data->update_lock = MUTEX;
return 0;
}
/* Inverse of lm78_new_client */
void lm78_remove_client(struct i2c_client *client)
{
int i;
for (i = 0; i < MAX_LM78_NR; i++)
if (client == lm78_list[i])
lm78_list[i] = NULL;
}
/* No commands defined yet */
int lm78_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
/* Nothing here yet */
void lm78_inc_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
/* Nothing here yet */
void lm78_dec_use (struct i2c_client *client)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
/* The SMBus locks itself, but ISA access must be locked explicitely!
There are some ugly typecasts here, but the good new is - they should
nowhere else be necessary! */
int lm78_read_value(struct i2c_client *client, u8 reg)
{
int res;
down((struct semaphore *) (client->data));
outb_p(reg,(((struct isa_client *) client)->isa_addr) +
LM78_ADDR_REG_OFFSET);
res = inb_p((((struct isa_client *) client)->isa_addr) +
LM78_DATA_REG_OFFSET);
up((struct semaphore *) (client->data));
return res;
}
/* The SMBus locks itself, but ISA access muse be locked explicitely!
There are some ugly typecasts here, but the good new is - they should
nowhere else be necessary! */
int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
{
down((struct semaphore *) (client->data));
outb_p(reg,((struct isa_client *) client)->isa_addr + LM78_ADDR_REG_OFFSET);
outb_p(value,((struct isa_client *) client)->isa_addr + LM78_DATA_REG_OFFSET);
up((struct semaphore *) (client->data));
return 0;
}
/* Called when we have found a new LM78. It should set limits, etc. */
void lm78_init_client(struct i2c_client *client)
{
int vid;
/* Reset all except Watchdog values and last conversion values
This sets fan-divs to 2, among others */
lm78_write_value(client,LM78_REG_CONFIG,0x80);
vid = lm78_read_value(client,LM78_REG_VID_FANDIV) & 0x0f;
vid |= 0x10;
vid = VID_FROM_REG(vid);
lm78_write_value(client,LM78_REG_IN_MIN(0),IN_TO_REG(LM78_INIT_IN_MIN_0));
lm78_write_value(client,LM78_REG_IN_MAX(0),IN_TO_REG(LM78_INIT_IN_MAX_0));
lm78_write_value(client,LM78_REG_IN_MIN(1),IN_TO_REG(LM78_INIT_IN_MIN_1));
lm78_write_value(client,LM78_REG_IN_MAX(1),IN_TO_REG(LM78_INIT_IN_MAX_1));
lm78_write_value(client,LM78_REG_IN_MIN(2),IN_TO_REG(LM78_INIT_IN_MIN_2));
lm78_write_value(client,LM78_REG_IN_MAX(2),IN_TO_REG(LM78_INIT_IN_MAX_2));
lm78_write_value(client,LM78_REG_IN_MIN(3),IN_TO_REG(LM78_INIT_IN_MIN_3));
lm78_write_value(client,LM78_REG_IN_MAX(3),IN_TO_REG(LM78_INIT_IN_MAX_3));
lm78_write_value(client,LM78_REG_IN_MIN(4),IN_TO_REG(LM78_INIT_IN_MIN_4));
lm78_write_value(client,LM78_REG_IN_MAX(4),IN_TO_REG(LM78_INIT_IN_MAX_4));
lm78_write_value(client,LM78_REG_IN_MIN(5),IN_TO_REG(LM78_INIT_IN_MIN_5));
lm78_write_value(client,LM78_REG_IN_MAX(5),IN_TO_REG(LM78_INIT_IN_MAX_5));
lm78_write_value(client,LM78_REG_IN_MIN(6),IN_TO_REG(LM78_INIT_IN_MIN_6));
lm78_write_value(client,LM78_REG_IN_MAX(6),IN_TO_REG(LM78_INIT_IN_MAX_6));
lm78_write_value(client,LM78_REG_FAN_MIN(1),
FAN_TO_REG(LM78_INIT_FAN_MIN_1,2));
lm78_write_value(client,LM78_REG_FAN_MIN(2),
FAN_TO_REG(LM78_INIT_FAN_MIN_2,2));
lm78_write_value(client,LM78_REG_FAN_MIN(3),
FAN_TO_REG(LM78_INIT_FAN_MIN_3,2));
lm78_write_value(client,LM78_REG_TEMP_OVER,TEMP_TO_REG(LM78_INIT_TEMP_OVER));
lm78_write_value(client,LM78_REG_TEMP_HYST,TEMP_TO_REG(LM78_INIT_TEMP_HYST));
/* Start monitoring */
lm78_write_value(client,LM78_REG_CONFIG,
(lm78_read_value(client,LM78_REG_CONFIG) & 0xf7) | 0x01);
}
void lm78_update_client(struct i2c_client *client)
{
struct lm78_data *data = client->data;
int i;
down(&data->update_lock);
if ((jiffies - data->last_updated > HZ+HZ/2 ) ||
(jiffies < data->last_updated) || ! data->valid) {
#ifdef DEBUG
printk("Starting lm78 update\n");
#endif
for (i = 0; i <= 6; i++) {
data->in[i] = lm78_read_value(client,LM78_REG_IN(i));
data->in_min[i] = lm78_read_value(client,LM78_REG_IN_MIN(i));
data->in_max[i] = lm78_read_value(client,LM78_REG_IN_MAX(i));
}
for (i = 1; i <= 3; i++) {
data->fan[i-1] = lm78_read_value(client,LM78_REG_FAN(i));
data->fan_min[i-1] = lm78_read_value(client,LM78_REG_FAN_MIN(i));
}
data->temp = lm78_read_value(client,LM78_REG_TEMP);
data->temp_over = lm78_read_value(client,LM78_REG_TEMP_OVER);
data->temp_hyst = lm78_read_value(client,LM78_REG_TEMP_HYST);
i = lm78_read_value(client,LM78_REG_VID_FANDIV);
data->vid = i & 0x0f;
data->vid |= 0x10;
data->fan_div[0] = (i >> 4) & 0x03;
data->fan_div[1] = i >> 6;
data->alarms = lm78_read_value(client,LM78_REG_ALARM1);
/* Not available in SiS 5595
+ (lm78_read_value(client,LM78_REG_ALARM2) << 8);
*/
data->last_updated = jiffies;
data->valid = 1;
data->fan_div[2] = 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 lm78_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
int nr = ctl_name - LM78_SYSCTL_IN0;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_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]);
lm78_write_value(client,LM78_REG_IN_MIN(nr),data->in_min[nr]);
}
if (*nrels_mag >= 2) {
data->in_max[nr] = IN_TO_REG(results[1]);
lm78_write_value(client,LM78_REG_IN_MAX(nr),data->in_max[nr]);
}
}
}
void lm78_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
int nr = ctl_name - LM78_SYSCTL_FAN1 + 1;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_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]));
lm78_write_value(client,LM78_REG_FAN_MIN(nr),data->fan_min[nr-1]);
}
}
}
void lm78_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 1;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_over);
results[1] = TEMP_FROM_REG(data->temp_hyst);
results[2] = TEMP_FROM_REG(data->temp);
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag >= 1) {
data->temp_over = TEMP_TO_REG(results[0]);
lm78_write_value(client,LM78_REG_TEMP_OVER,data->temp_over);
}
if (*nrels_mag >= 2) {
data->temp_hyst = TEMP_TO_REG(results[1]);
lm78_write_value(client,LM78_REG_TEMP_HYST,data->temp_hyst);
}
}
}
void lm78_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 2;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_update_client(client);
results[0] = VID_FROM_REG(data->vid);
*nrels_mag = 1;
}
}
void lm78_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_update_client(client);
results[0] = ALARMS_FROM_REG(data->alarms);
*nrels_mag = 1;
}
}
void lm78_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct lm78_data *data = client->data;
int old;
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
lm78_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 = lm78_read_value(client,LM78_REG_VID_FANDIV);
if (*nrels_mag >= 2) {
data->fan_div[1] = DIV_TO_REG(results[1]);
old = (old & 0x3f) | (data->fan_div[1] << 6);
}
if (*nrels_mag >= 1) {
data->fan_div[0] = DIV_TO_REG(results[0]);
old = (old & 0xcf) | (data->fan_div[0] << 4);
lm78_write_value(client,LM78_REG_VID_FANDIV,old);
}
}
}
int lm78_init(void)
{
int res;
printk("sis5595.o version %s (%s)\n",LM_VERSION,LM_DATE);
lm78_initialized = 0;
if ((res =i2c_add_driver(&lm78_driver))) {
printk("sis5595.o: Driver registration failed, module not inserted.\n");
lm78_cleanup();
return res;
}
lm78_initialized ++;
return 0;
}
int lm78_cleanup(void)
{
int res;
if (lm78_initialized >= 1) {
if ((res = i2c_del_driver(&lm78_driver))) {
printk("sis5595.o: Driver deregistration failed, module not removed.\n");
return res;
}
lm78_initialized --;
}
return 0;
}
#ifdef MODULE
MODULE_AUTHOR("Kyösti Mälkki <kmalkki@cc.hut.fi>");
MODULE_DESCRIPTION("SiS 5595 Sensor device");
int init_module(void)
{
return lm78_init();
}
int cleanup_module(void)
{
return lm78_cleanup();
}
#endif /* MODULE */
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