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lm-sensors/kernel/chips/mtp008.c
T
Mark D. Studebaker 7879f5cf8a (mds) fix fan min 3 initialization 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@942 7894878c-1315-0410-8ee3-d5d059ff63e0
2000-12-04 00:05:14 +00:00

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/*
mtp008.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 2000 Kris Van Hees <aedil@alchar.org>
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/version.h>
#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 <linux/init.h>
#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
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,13)
#define THIS_MODULE NULL
#endif
/* Addresses to scan */
static unsigned short normal_i2c[] =
{SENSORS_I2C_END};
static unsigned short normal_i2c_range[] =
{0x2c, 0x2e, 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(mtp008);
/* The MTP008 registers */
/* in0 .. in6 */
#define MTP008_REG_IN(nr) (0x20 + (nr))
#define MTP008_REG_IN_MAX(nr) (0x2b + (nr) * 2)
#define MTP008_REG_IN_MIN(nr) (0x2c + (nr) * 2)
/* temp1 */
#define MTP008_REG_TEMP 0x27
#define MTP008_REG_TEMP_MAX 0x39
#define MTP008_REG_TEMP_MIN 0x3a
/* fan1 .. fan3 */
#define MTP008_REG_FAN(nr) (0x27 + (nr))
#define MTP008_REG_FAN_MIN(nr) (0x3a + (nr))
#define MTP008_REG_CONFIG 0x40
#define MTP008_REG_INT_STAT1 0x41
#define MTP008_REG_INT_STAT2 0x42
#define MTP008_REG_SMI_MASK1 0x43
#define MTP008_REG_SMI_MASK2 0x44
#define MTP008_REG_NMI_MASK1 0x45
#define MTP008_REG_NMI_MASK2 0x46
#define MTP008_REG_VID_FANDIV 0x47
#define MTP008_REG_I2C_ADDR 0x48
#define MTP008_REG_RESET_VID4 0x49
#define MTP008_REG_OVT_PROP 0x50
#define MTP008_REG_BEEP_CTRL1 0x51
#define MTP008_REG_BEEP_CTRL2 0x52
/* pwm1 .. pwm3 */
#define MTP008_REG_PWM_CTRL(nr) (0x53 + (nr))
#define MTP008_REG_PIN_CTRL1 0x56
#define MTP008_REG_PIN_CTRL2 0x57
#define MTP008_REG_CHIPID 0x58
/*
* Pin control register configuration constants.
*/
#define MTP008_CFG_VT1_PII 0x08
#define MTP008_CFG_VT2_AIN 0x00
#define MTP008_CFG_VT2_VT 0x03
#define MTP008_CFG_VT2_PII 0x04
#define MTP008_CFG_VT2_MASK 0x06
#define MTP008_CFG_VT3_VT 0x01
/*
* Conversion routines and macros. Rounding and limit checking is only done on
* the TO_REG variants.
*
* Note that IN values are expressed as 100 times the actual voltage to avoid
* having to use floating point values. As such, IN values are between 0 and
* 409 (0V to 4.096V).
*/
#define IN_TO_REG(val) (SENSORS_LIMIT((((val) * 10 + 8) / 16), 0, 255))
#define IN_FROM_REG(val) (((val) * 16) / 10)
/*
* The fan cotation count (as stored in the register) is calculated using the
* following formula:
* count = (22.5K * 60) / (rpm * div) = 1350000 / (rpm * div)
* and the rpm is therefore:
* rpm = 1350000 / (count * div)
*/
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 / \
((val) * (div)) \
)
/*
* Temperatures are stored as two's complement values of the Celsius value. It
* actually uses 10 times the Celsius value to avoid using floating point
* values.
*/
#define TEMP_TO_REG(val) ( \
(val) < 0 \
? SENSORS_LIMIT(((val) - 5) / 10, 0, 255) \
: SENSORS_LIMIT(((val) + 5) / 10, 0, 255) \
)
#define TEMP_FROM_REG(val) ( \
( \
(val) > 0x80 ? (val) - 0x100 \
: (val) \
) * 10 \
)
/*
* VCORE voltage:
* 0x00 to 0x0f = 2.05 to 1.30 (0.05 per unit)
* 0x10 to 0x1e = 3.50 to 2.10 (0.10 per unit)
* 0x1f = No CPU
*/
#define VID_FROM_REG(val) ((val) == 0x1f \
? 0 \
: (val) < 0x10 ? 205 - (val) * 5 \
: 510 - (val) * 10)
/*
* Fan divider.
*/
#define DIV_FROM_REG(val) (1 << (val))
#define DIV_TO_REG(val) ((val) == 8 ? 3 \
: (val) == 4 ? 2 \
: (val) == 2 ? 1 \
: 0)
/*
* Alarms (interrupt status).
*/
#define ALARMS_FROM_REG(val) (val)
/*
* Beep controls.
*/
#define BEEPS_FROM_REG(val) (val)
#define BEEPS_TO_REG(val) (val)
/*
* PWM control.
*/
#define PWM_FROM_REG(val) (val)
#define PWM_TO_REG(val) (val)
/* Initial limits */
#define MTP008_INIT_IN_0 (vid) /* VCore 1 */
#define MTP008_INIT_IN_1 330 /* +3.3V */
#define MTP008_INIT_IN_2 (1200 * 10 / 38) /* +12V */
#define MTP008_INIT_IN_3 (vid) /* VCore 2 */
#define MTP008_INIT_IN_5 ((11861 + 7 * (-1200)) / 36) /* -12V */
#define MTP008_INIT_IN_6 150 /* Vtt */
#define MTP008_INIT_IN_PCT 10
#define MTP008_INIT_IN_MIN_0 (MTP008_INIT_IN_0 - \
MTP008_INIT_IN_0 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_0 (MTP008_INIT_IN_0 + \
MTP008_INIT_IN_0 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MIN_1 (MTP008_INIT_IN_1 - \
MTP008_INIT_IN_1 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_1 (MTP008_INIT_IN_1 + \
MTP008_INIT_IN_1 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MIN_2 (MTP008_INIT_IN_2 - \
MTP008_INIT_IN_2 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_2 (MTP008_INIT_IN_2 + \
MTP008_INIT_IN_2 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MIN_3 (MTP008_INIT_IN_3 - \
MTP008_INIT_IN_3 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_3 (MTP008_INIT_IN_3 + \
MTP008_INIT_IN_3 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MIN_5 (MTP008_INIT_IN_5 - \
MTP008_INIT_IN_5 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_5 (MTP008_INIT_IN_5 + \
MTP008_INIT_IN_5 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MIN_6 (MTP008_INIT_IN_6 - \
MTP008_INIT_IN_6 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_IN_MAX_6 (MTP008_INIT_IN_6 + \
MTP008_INIT_IN_6 * MTP008_INIT_IN_PCT / 100)
#define MTP008_INIT_FAN_MIN_1 3000
#define MTP008_INIT_FAN_MIN_2 3000
#define MTP008_INIT_FAN_MIN_3 3000
#define MTP008_INIT_TEMP_OVER 700 /* 70 Celsius */
#define MTP008_INIT_TEMP_HYST 50 /* 5 Celsius */
#define MTP008_INIT_TEMP2_OVER 70 /* 70 Celsius */
#define MTP008_INIT_TEMP2_HYST 50 /* 5 Celsius */
#ifdef MODULE
extern int init_module(void);
extern int cleanup_module(void);
#endif /* MODULE */
/*
* For each registered MTP008, we need to keep some data in memory. The
* structure itself is dynamically allocated, at the same time when a new
* mtp008 client is allocated.
*/
struct mtp008_data {
int sysctl_id;
enum chips type;
struct semaphore update_lock;
char valid; /* !=0 if 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 temp; /* Register value */
u8 temp_max; /* Register value */
u8 temp_min; /* Register value */
u8 fan[3]; /* Register value */
u8 fan_min[3]; /* Register value */
u8 vid; /* Register encoding */
u8 fan_div[3]; /* Register encoding */
u16 alarms; /* Register encoding */
u16 beeps; /* Register encoding */
u8 pwm[4]; /* Register value */
u8 sens[3]; /* 1 = Analog input,
2 = Thermistor,
3 = PII/Celeron diode */
};
#ifdef MODULE
static int __init sensors_mtp008_init(void);
#else
extern int __init sensors_mtp008_init(void);
#endif
static int __init mtp008_cleanup(void);
static int mtp008_attach_adapter(struct i2c_adapter *adapter);
static int mtp008_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind);
static int mtp008_detach_client(struct i2c_client *client);
static int mtp008_command(struct i2c_client *client, unsigned int cmd,
void *arg);
static void mtp008_inc_use(struct i2c_client *client);
static void mtp008_dec_use(struct i2c_client *client);
static int mtp008_read_value(struct i2c_client *client, u8 register);
static int mtp008_write_value(struct i2c_client *client, u8 register, u8 value);
static void mtp008_update_client(struct i2c_client *client);
static void mtp008_init_client(struct i2c_client *client);
static void mtp008_in(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_fan(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_temp(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_temp_add(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_vid(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_fan_div(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_alarms(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_beep(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_pwm(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void mtp008_sens(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static int mtp008_id = 0;
static struct i2c_driver mtp008_driver =
{
/* name */ "MTP008 sensor driver",
/* id */ I2C_DRIVERID_MTP008,
/* flags */ I2C_DF_NOTIFY,
/* attach_adapter */ &mtp008_attach_adapter,
/* detach_client */ &mtp008_detach_client,
/* command */ &mtp008_command,
/* inc_use */ &mtp008_inc_use,
/* dec_use */ &mtp008_dec_use
};
/* Used by mtp008_init/cleanup */
static int __initdata mtp008_initialized = 0;
/* The /proc/sys entries */
/* These files are created for each detected chip. This is just a template;
though at first sight, you might think we could use a statically
allocated list, we need some way to get back to the parent - which
is done through one of the 'extra' fields which are initialized
when a new copy is allocated. */
static ctl_table mtp008_dir_table_template[] =
{
{MTP008_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_FAN3, "fan3", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_TEMP1, "temp1", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_temp},
{MTP008_SYSCTL_TEMP2, "temp2", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_temp_add},
{MTP008_SYSCTL_TEMP3, "temp3", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_temp_add},
{MTP008_SYSCTL_VID, "vid", NULL, 0, 0444, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_vid},
{MTP008_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_fan_div},
{MTP008_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_alarms},
{MTP008_SYSCTL_BEEP, "beep", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_beep},
{MTP008_SYSCTL_PWM1, "pwm1", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_PWM2, "pwm2", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_PWM3, "pwm3", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_SENS1, "sensor1", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_sens},
{MTP008_SYSCTL_SENS2, "sensor2", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_sens},
{MTP008_SYSCTL_SENS3, "sensor3", NULL, 0, 0644, NULL,
&sensors_proc_real, &sensors_sysctl_real, NULL, &mtp008_sens},
{0}
};
/* This function is called when:
* mtp008_driver is inserted (when this module is loaded), for each available
* adapter when a new adapter is inserted (and mtp008_driver is still present)
*/
int mtp008_attach_adapter(struct i2c_adapter *adapter)
{
struct i2c_client_address_data mtp008_addr_data;
mtp008_addr_data.normal_i2c = addr_data.normal_i2c;
mtp008_addr_data.normal_i2c_range = addr_data.normal_i2c_range;
mtp008_addr_data.probe = addr_data.probe;
mtp008_addr_data.probe_range = addr_data.probe_range;
mtp008_addr_data.ignore = addr_data.ignore;
mtp008_addr_data.ignore_range = addr_data.ignore_range;
mtp008_addr_data.force = addr_data.forces->force;
return i2c_probe(adapter, &mtp008_addr_data, mtp008_detect);
}
int mtp008_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind)
{
const char *type_name = "";
const char *client_name = "";
int is_isa, err, sysid;
struct i2c_client *new_client;
struct mtp008_data *data;
err = 0;
is_isa = i2c_is_isa_adapter(adapter);
if (is_isa ||
!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
goto ERROR0;
/*
* 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 use mtp008_(read|write)_value().
*/
if (!(new_client = kmalloc(sizeof(struct i2c_client) +
sizeof(struct mtp008_data),
GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
data = (struct mtp008_data *) (new_client + 1);
new_client->addr = address;
new_client->data = data;
new_client->adapter = adapter;
new_client->driver = &mtp008_driver;
new_client->flags = 0;
/*
* Remaining detection.
*/
if (kind < 0) {
if (mtp008_read_value(new_client, MTP008_REG_CHIPID) != 0xac)
goto ERROR1;
}
/*
* Fill in the remaining client fields and put it into the global list.
*/
type_name = "mtp008";
client_name = "MTP008 chip";
strcpy(new_client->name, client_name);
data->type = kind;
new_client->id = mtp008_id++;
data->valid = 0;
init_MUTEX(&data->update_lock);
/*
* Tell the I2C layer that a new client has arrived.
*/
if ((err = i2c_attach_client(new_client)))
goto ERROR1;
/*
* Register a new directory entry with the sensors module.
*/
if ((sysid = sensors_register_entry(new_client, type_name,
mtp008_dir_table_template,
THIS_MODULE)) < 0) {
err = sysid;
goto ERROR2;
}
data->sysctl_id = sysid;
/*
* Initialize the MTP008 chip.
*/
mtp008_init_client(new_client);
return 0;
/*
* Error handling. Bad programming practise but very code efficient.
*/
ERROR2:
i2c_detach_client(new_client);
ERROR1:
kfree(new_client);
ERROR0:
return err;
}
int mtp008_detach_client(struct i2c_client *client)
{
int err;
sensors_deregister_entry(
((struct mtp008_data *) (client->data)
)->sysctl_id);
if ((err = i2c_detach_client(client))) {
printk("mtp008.o: Deregistration failed, "
"client not detached.\n");
return err;
}
kfree(client);
return 0;
}
/* No commands defined yet */
int mtp008_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
return 0;
}
void mtp008_inc_use(struct i2c_client *client)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
void mtp008_dec_use(struct i2c_client *client)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
int mtp008_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg) & 0xff;
}
int mtp008_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 MTP008. It should set limits, etc. */
void mtp008_init_client(struct i2c_client *client)
{
int vid;
/*
* Initialize the Myson MTP008 hardware monitoring chip.
*/
mtp008_write_value(
client, MTP008_REG_CONFIG,
(mtp008_read_value(client, MTP008_REG_CONFIG) & 0x7f) | 0x80
);
/*
* Retrieve the VID setting (needed for the default limits).
*/
vid = mtp008_read_value(client, MTP008_REG_VID_FANDIV) & 0x0f;
vid |= (mtp008_read_value(client, MTP008_REG_RESET_VID4) & 0x01) << 4;
vid = VID_FROM_REG(vid);
/*
* Set the default limits. We are making the initial assumption that
* AIN4 is to be configured as PII temp sensor 2, since we've only seen
* this hardware monitoring chip on the Tyan S1824D motherboard which
* is a dual PIII motherboard. We are also making the assumption that
* usually AIN5 is hooked up to the -12V sensing circuit.
*
* Setting temp sensors 1 and 2 to be a PII sensors is done as follows:
*
* Register 0x57: 0 0 0 0 1 1 0 0
* | \ / +-- AIN5/VT3 with AIN5
* | +----- AIN4/VT2/PII with PII
* +-------- VT1/PII with PII
*/
mtp008_write_value(client, MTP008_REG_PIN_CTRL2, 0x0c);
mtp008_write_value(client, MTP008_REG_IN_MAX(0),
IN_TO_REG(MTP008_INIT_IN_MAX_0));
mtp008_write_value(client, MTP008_REG_IN_MIN(0),
IN_TO_REG(MTP008_INIT_IN_MIN_0));
mtp008_write_value(client, MTP008_REG_IN_MAX(1),
IN_TO_REG(MTP008_INIT_IN_MAX_1));
mtp008_write_value(client, MTP008_REG_IN_MIN(1),
IN_TO_REG(MTP008_INIT_IN_MIN_1));
mtp008_write_value(client, MTP008_REG_IN_MAX(2),
IN_TO_REG(MTP008_INIT_IN_MAX_2));
mtp008_write_value(client, MTP008_REG_IN_MIN(2),
IN_TO_REG(MTP008_INIT_IN_MIN_2));
mtp008_write_value(client, MTP008_REG_IN_MAX(3),
IN_TO_REG(MTP008_INIT_IN_MAX_3));
mtp008_write_value(client, MTP008_REG_IN_MIN(3),
IN_TO_REG(MTP008_INIT_IN_MIN_3));
mtp008_write_value(client, MTP008_REG_IN_MAX(5),
IN_TO_REG(MTP008_INIT_IN_MAX_5));
mtp008_write_value(client, MTP008_REG_IN_MIN(5),
IN_TO_REG(MTP008_INIT_IN_MIN_5));
mtp008_write_value(client, MTP008_REG_IN_MAX(6),
IN_TO_REG(MTP008_INIT_IN_MAX_6));
mtp008_write_value(client, MTP008_REG_IN_MIN(6),
IN_TO_REG(MTP008_INIT_IN_MIN_6));
mtp008_write_value(client, MTP008_REG_TEMP_MAX,
TEMP_TO_REG(MTP008_INIT_TEMP_OVER));
mtp008_write_value(client, MTP008_REG_TEMP_MIN,
TEMP_TO_REG(MTP008_INIT_TEMP_HYST));
mtp008_write_value(client, MTP008_REG_IN_MAX(4),
TEMP_TO_REG(MTP008_INIT_TEMP2_OVER));
mtp008_write_value(client, MTP008_REG_IN_MIN(4),
TEMP_TO_REG(MTP008_INIT_TEMP2_HYST));
mtp008_write_value(client, MTP008_REG_FAN_MIN(1),
FAN_TO_REG(MTP008_INIT_FAN_MIN_1, 2));
mtp008_write_value(client, MTP008_REG_FAN_MIN(2),
FAN_TO_REG(MTP008_INIT_FAN_MIN_2, 2));
mtp008_write_value(client, MTP008_REG_FAN_MIN(3),
FAN_TO_REG(MTP008_INIT_FAN_MIN_3, 2));
/*
* Start monitoring.
*/
mtp008_write_value(
client, MTP008_REG_CONFIG,
(mtp008_read_value(client, MTP008_REG_CONFIG) & 0xf7) | 0x01
);
}
void mtp008_update_client(struct i2c_client *client)
{
int i;
u8 inp;
struct mtp008_data *data;
data = client->data;
down(&data->update_lock);
if ((jiffies - data->last_updated > HZ + HZ / 2) ||
(jiffies < data->last_updated) || !data->valid) {
#ifdef DEBUG
printk("Starting MTP008 update\n");
#endif
/*
* Read in the analog inputs. We're reading AIN4 and AIN5 as
* regular analog inputs, even though they may have been
* configured as temperature readings instead. Interpretation
* of these values is done elsewhere.
*/
for (i = 0; i < 7; i++) {
data->in[i] =
mtp008_read_value(client, MTP008_REG_IN(i));
data->in_max[i] =
mtp008_read_value(client, MTP008_REG_IN_MAX(i));
data->in_min[i] =
mtp008_read_value(client, MTP008_REG_IN_MIN(i));
}
/*
* Read the temperature sensor.
*/
data->temp = mtp008_read_value(client, MTP008_REG_TEMP);
data->temp_max = mtp008_read_value(client, MTP008_REG_TEMP_MAX);
data->temp_min = mtp008_read_value(client, MTP008_REG_TEMP_MIN);
/*
* Read the fan sensors.
*/
for (i = 0; i < 3; i++) {
data->fan[i] = mtp008_read_value(client,
MTP008_REG_FAN(i + 1));
data->fan_min[i] = mtp008_read_value(client,
MTP008_REG_FAN_MIN(i + 1));
}
/*
* Read the first 2 fan dividers and the VID setting. Read the
* third fan divider from a different register.
*/
inp = mtp008_read_value(client, MTP008_REG_VID_FANDIV);
data->vid = inp & 0x0f;
data->vid |= (mtp008_read_value(client,
MTP008_REG_RESET_VID4) & 0x01) << 4;
data->fan_div[0] = (inp >> 4) & 0x03;
data->fan_div[1] = inp >> 6;
data->fan_div[2] =
mtp008_read_value(client, MTP008_REG_PIN_CTRL1) >> 6;
/*
* Read the interrupt status registers.
*/
data->alarms =
(mtp008_read_value(client,
MTP008_REG_INT_STAT1) & 0xdf) |
(mtp008_read_value(client,
MTP008_REG_INT_STAT2) & 0x0f) << 8;
/*
* Read the beep control registers.
*/
data->beeps =
(mtp008_read_value(client,
MTP008_REG_BEEP_CTRL1) & 0xdf) |
(mtp008_read_value(client,
MTP008_REG_BEEP_CTRL2) & 0x8f) << 8;
/*
* Read the PWN registers.
*/
for (i = 0; i < 3; i++)
data->pwm[i] =
mtp008_read_value(client,
MTP008_REG_PWM_CTRL(i));
/*
* Read the sensor configuration.
*/
inp = mtp008_read_value(client, MTP008_REG_PIN_CTRL2) & 0x0f;
data->sens[0] = (inp >> 3) + 2; /* 2 or 3 */
data->sens[1] = ((inp >> 1) & 0x03) + 1; /* 1, 2 or 3 */
data->sens[2] = (inp & 0x01) + 1; /* 1 or 2 */
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 mtp008_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int nr;
struct mtp008_data *data;
nr = ctl_name - MTP008_SYSCTL_IN0;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 2;
break;
case SENSORS_PROC_REAL_READ:
mtp008_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;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->in_min[nr] = IN_TO_REG(results[0]);
mtp008_write_value(client, MTP008_REG_IN_MIN(nr),
data->in_min[nr]);
}
if (*nrels_mag >= 2) {
data->in_max[nr] = IN_TO_REG(results[1]);
mtp008_write_value(client, MTP008_REG_IN_MAX(nr),
data->in_max[nr]);
}
}
}
void mtp008_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int nr;
struct mtp008_data *data;
nr = ctl_name - MTP008_SYSCTL_FAN1;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = FAN_FROM_REG(data->fan_min[nr],
DIV_FROM_REG(data->fan_div[nr]));
results[1] = FAN_FROM_REG(data->fan[nr],
DIV_FROM_REG(data->fan_div[nr]));
*nrels_mag = 2;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->fan_min[nr] =
FAN_TO_REG(results[0],
DIV_FROM_REG(data->fan_div[nr]));
mtp008_write_value(client, MTP008_REG_FAN_MIN(nr),
data->fan_min[nr]);
}
}
}
void mtp008_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct mtp008_data *data;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 1;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_max);
results[1] = TEMP_FROM_REG(data->temp_min);
results[2] = TEMP_FROM_REG(data->temp);
*nrels_mag = 3;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->temp_max = TEMP_TO_REG(results[0]);
mtp008_write_value(client, MTP008_REG_TEMP_MAX,
data->temp_max);
}
if (*nrels_mag >= 2) {
data->temp_min = TEMP_TO_REG(results[1]);
mtp008_write_value(client, MTP008_REG_TEMP_MIN,
data->temp_min);
}
}
}
void mtp008_temp_add(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int nr;
struct mtp008_data *data;
nr = 3 + ctl_name - MTP008_SYSCTL_TEMP1; /* AIN4 or AIN5 */
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 1;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = TEMP_FROM_REG(data->in_max[nr]);
results[1] = TEMP_FROM_REG(data->in_min[nr]);
results[2] = TEMP_FROM_REG(data->in[nr]);
*nrels_mag = 3;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->in_max[nr] = TEMP_TO_REG(results[0]);
mtp008_write_value(client, MTP008_REG_TEMP_MAX,
data->in_max[nr]);
}
if (*nrels_mag >= 2) {
data->in_min[nr] = TEMP_TO_REG(results[1]);
mtp008_write_value(client, MTP008_REG_TEMP_MIN,
data->in_min[nr]);
}
}
}
void mtp008_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct mtp008_data *data;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 2;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = VID_FROM_REG(data->vid);
*nrels_mag = 1;
}
}
void mtp008_fan_div(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results)
{
struct mtp008_data *data;
u8 val;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = DIV_FROM_REG(data->fan_div[0]);
results[1] = DIV_FROM_REG(data->fan_div[1]);
results[2] = DIV_FROM_REG(data->fan_div[2]);
*nrels_mag = 3;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 3) {
data->fan_div[2] = DIV_TO_REG(results[2]);
val = mtp008_read_value(client, MTP008_REG_PIN_CTRL1);
val = (val & 0x3f) | (data->fan_div[2] & 0x03) << 6;
mtp008_write_value(client, MTP008_REG_PIN_CTRL1, val);
}
if (*nrels_mag >= 2) {
data->fan_div[1] = DIV_TO_REG(results[1]);
val = mtp008_read_value(client, MTP008_REG_VID_FANDIV);
val = (val & 0x3f) | (data->fan_div[1] & 0x03) << 6;
}
if (*nrels_mag >= 2) {
val = (val & 0xcf) | (data->fan_div[1] & 0x03) << 4;
mtp008_write_value(client, MTP008_REG_VID_FANDIV, val);
}
}
}
void mtp008_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct mtp008_data *data;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = ALARMS_FROM_REG(data->alarms);
*nrels_mag = 1;
}
}
void mtp008_beep(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct mtp008_data *data;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = BEEPS_FROM_REG(data->beeps);
*nrels_mag = 1;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->beeps = BEEPS_TO_REG(results[0]) & 0xdf8f;
mtp008_write_value(client, MTP008_REG_BEEP_CTRL1,
data->beeps & 0xff);
mtp008_write_value(client, MTP008_REG_BEEP_CTRL2,
data->beeps >> 8);
}
}
}
void mtp008_pwm(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
int nr;
struct mtp008_data *data;
nr = ctl_name - MTP008_SYSCTL_PWM1;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
mtp008_update_client(client);
results[0] = PWM_FROM_REG(data->pwm[nr]);
*nrels_mag = 1;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
data->pwm[nr] = PWM_TO_REG(results[0]);
mtp008_write_value(client, MTP008_REG_PWM_CTRL(nr),
data->pwm[nr]);
}
}
}
void mtp008_sens(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
const char *opts = "";
int nr;
u8 tmp;
struct mtp008_data *data;
nr = ctl_name - MTP008_SYSCTL_SENS1;
data = client->data;
switch (operation) {
case SENSORS_PROC_REAL_INFO:
*nrels_mag = 0;
break;
case SENSORS_PROC_REAL_READ:
results[0] = data->sens[nr];
*nrels_mag = 1;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
tmp = mtp008_read_value(client, MTP008_REG_PIN_CTRL2);
switch (nr) {
case 1: /* VT or PII */
opts = "2 or 3";
switch (results[0]) {
case 2: /* Thermistor */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp & ~MTP008_CFG_VT1_PII
);
data->sens[nr] = 2;
break;
case 3: /* PII/Celeron thermal diode */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT1_PII
);
data->sens[nr] = 3;
break;
}
break;
case 2: /* AIN, VT or PII */
tmp &= ~MTP008_CFG_VT2_MASK;
opts = "1, 2 or 3";
switch (results[0]) {
case 1: /* Analog input */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_AIN
);
data->sens[nr] = 1;
break;
case 2: /* Thermistor */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_VT
);
data->sens[nr] = 2;
break;
case 3: /* PII/Celeron thermal diode */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_PII
);
data->sens[nr] = 3;
break;
}
break;
case 3: /* AIN or VT */
opts = "1 or 2";
switch (results[0]) {
case 1: /* Analog input */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp & ~MTP008_CFG_VT3_VT
);
data->sens[nr] = 1;
break;
case 2: /* Thermistor */
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT3_VT
);
data->sens[nr] = 2;
break;
}
break;
}
printk("mtp008.o: Invalid sensor type %ld "
"for sensor %d; must be %s.\n",
results[0], nr, opts);
}
}
}
int __init sensors_mtp008_init(void)
{
int res;
printk("mtp008.o version %s (%s)\n", LM_VERSION, LM_DATE);
mtp008_initialized = 0;
if ((res = i2c_add_driver(&mtp008_driver))) {
printk("mtp008.o: Driver registration failed, "
"module not inserted.\n");
mtp008_cleanup();
return res;
}
mtp008_initialized++;
return 0;
}
int __init mtp008_cleanup(void)
{
int res;
if (mtp008_initialized >= 1) {
if ((res = i2c_del_driver(&mtp008_driver))) {
printk("mtp008.o: Driver deregistration failed, "
"module not removed.\n");
return res;
}
mtp008_initialized--;
}
return 0;
}
EXPORT_NO_SYMBOLS;
#ifdef MODULE
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
"Philip Edelbrock <phil@netroedge.com>, "
"and Kris Van Hees <aedil@alchar.org>");
MODULE_DESCRIPTION("MTP008 driver");
int init_module(void)
{
return sensors_mtp008_init();
}
int cleanup_module(void)
{
return mtp008_cleanup();
}
#endif /* MODULE */
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