wt/lm-sensors
1
0 Fork 0
mirror of https://github.com/lm-sensors/lm-sensors.git synced 2026-10-17 10:59:31 +00:00
Code Issues Packages Projects Releases Wiki Activity
Files
a03c2edf3db7e528ae1c193702304d2cf87dc34d
lm-sensors/kernel/chips/adm9240.c
T
Mark D. Studebaker 7bd97f4667 Add MODULE_LICENSE("GPL") to all modules 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@1201 7894878c-1315-0410-8ee3-d5d059ff63e0
2001-10-13 17:48:43 +00:00

878 lines
27 KiB
C
Raw Blame History

/*
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.
*/
/* Supports ADM9240, DS1780, and LM81. See doc/chips/adm9240 for details */
/*
A couple notes about the ADM9240:
* 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/version.h>
#include <linux/module.h>
#include <linux/slab.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 "sensors.h"
#include <linux/init.h>
#ifdef MODULE_LICENSE
MODULE_LICENSE("GPL");
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,2,18)) || \
(LINUX_VERSION_CODE == KERNEL_VERSION(2,3,0))
#define init_MUTEX(s) do { *(s) = MUTEX; } while(0)
#endif
#ifndef THIS_MODULE
#define THIS_MODULE NULL
#endif
/* Addresses to scan */
static unsigned short normal_i2c[] = { SENSORS_I2C_END };
static unsigned short normal_i2c_range[] = { 0x2c, 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_3(adm9240, ds1780, lm81);
/* 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 /* 0x23 for ADM9240; 0xDA for DS1780 */
/* 0x01 for LM81 */
#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_TCRIT_LIMIT 0x37 /* LM81 only - not supported */
#define ADM9240_REG_LOW_LIMIT 0x38 /* LM81 only - not supported */
#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
#define ADM9240_REG_EXTMODE1 0x4C /* LM81 only - not supported */
#define ADM9240_REG_EXTMODE2 0x4D /* LM81 only - not supported */
/* 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) & 0xff),0,255))
#define IN_FROM_REG(val,nr) (val)
extern inline 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);
}
#define FAN_FROM_REG(val,div) ((val)==0?-1:\
(val)==255?0:1350000/((div)*(val)))
#define TEMP_FROM_REG(temp) \
((temp)<256?((((temp)&0x1fe) >> 1) * 10) + ((temp) & 1) * 5: \
((((temp)&0x1fe) >> 1) -255) * 10 - ((temp) & 1) * 5) \
#define TEMP_LIMIT_FROM_REG(val) (((val)>0x80?(val)-0x100:(val))*10)
#define TEMP_LIMIT_TO_REG(val) SENSORS_LIMIT(((val)<0?(((val)-5)/10):\
((val)+5)/10), \
0,255)
#define ALARMS_FROM_REG(val) (val)
#define DIV_FROM_REG(val) (1 << (val))
#define DIV_TO_REG(val) ((val)==1?0:((val)==8?3:((val)==4?2:1)))
#define VID_FROM_REG(val) ((val)==0x1f?0:(val)>=0x10?510-(val)*10:\
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;
enum chips type;
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 */
};
#ifdef MODULE
static
#else
extern
#endif
int __init sensors_adm9240_init(void);
static int __init adm9240_cleanup(void);
static int adm9240_attach_adapter(struct i2c_adapter *adapter);
static int adm9240_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind);
static int adm9240_detach_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 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. */
static int adm9240_id = 0;
static struct i2c_driver adm9240_driver = {
/* name */ "ADM9240 sensor driver",
/* id */ I2C_DRIVERID_ADM9240,
/* flags */ I2C_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 __initdata 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, "in0", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_in},
{ADM9240_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_fan},
{ADM9240_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_fan},
{ADM9240_SYSCTL_TEMP, "temp", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_temp},
{ADM9240_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_fan_div},
{ADM9240_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_alarms},
{ADM9240_SYSCTL_ANALOG_OUT, "analog_out", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_analog_out},
{ADM9240_SYSCTL_VID, "vid", NULL, 0, 0444, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm9240_vid},
{0}
};
int adm9240_attach_adapter(struct i2c_adapter *adapter)
{
return i2c_detect(adapter, &addr_data, adm9240_detect);
}
static int adm9240_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind)
{
int i;
struct i2c_client *new_client;
struct adm9240_data *data;
int err = 0;
const char *type_name = "";
const char *client_name = "";
/* Make sure we aren't probing the ISA bus!! This is just a safety check
at this moment; i2c_detect really won't call us. */
#ifdef DEBUG
if (i2c_is_isa_adapter(adapter)) {
printk
("adm9240.o: adm9240_detect called for an ISA bus adapter?!?\n");
return 0;
}
#endif
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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 adm9240_{read,write}_value. */
if (!(new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct adm9240_data),
GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
data = (struct adm9240_data *) (new_client + 1);
new_client->addr = address;
new_client->data = data;
new_client->adapter = adapter;
new_client->driver = &adm9240_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. */
if (kind < 0) {
if (
((adm9240_read_value
(new_client, ADM9240_REG_CONFIG) & 0x80) != 0x00)
||
(adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
!= address))
goto ERROR1;
}
/* Determine the chip type. */
if (kind <= 0) {
i = adm9240_read_value(new_client, ADM9240_REG_COMPANY_ID);
if (i == 0x23)
kind = adm9240;
else if (i == 0xda)
kind = ds1780;
else if (i == 0x01)
kind = lm81;
else {
if (kind == 0)
printk
("adm9240.o: Ignoring 'force' parameter for unknown chip at "
"adapter %d, address 0x%02x\n",
i2c_adapter_id(adapter), address);
goto ERROR1;
}
}
if (kind == adm9240) {
type_name = "adm9240";
client_name = "ADM9240 chip";
} else if (kind == ds1780) {
type_name = "ds1780";
client_name = "DS1780 chip";
} else if (kind == lm81) {
type_name = "lm81";
client_name = "LM81 chip";
} else {
#ifdef DEBUG
printk("adm9240.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);
data->type = kind;
new_client->id = adm9240_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 = i2c_register_entry(new_client,
type_name,
adm9240_dir_table_template,
THIS_MODULE)) < 0) {
err = i;
goto ERROR4;
}
data->sysctl_id = i;
/* Initialize the ADM9240 chip */
adm9240_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 adm9240_detach_client(struct i2c_client *client)
{
int err;
i2c_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;
}
kfree(client);
return 0;
}
/* 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
}
int adm9240_read_value(struct i2c_client *client, u8 reg)
{
return 0xFF & i2c_smbus_read_byte_data(client, reg);
}
int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, 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 >
(data->type == adm9240 ? HZ / 2 : HZ * 2))
|| (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 & 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);
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 __init sensors_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 __init 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;
}
EXPORT_NO_SYMBOLS;
#ifdef MODULE
MODULE_AUTHOR
("Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>");
MODULE_DESCRIPTION("ADM9240 driver");
int init_module(void)
{
return sensors_adm9240_init();
}
int cleanup_module(void)
{
return adm9240_cleanup();
}
#endif /* MODULE */
Reference in new issue View Git Blame Copy Permalink