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lm-sensors/kernel/chips/mtp008.c
T
Jean Delvare 239b3d0344 Backport memory allocation reworking from Linux 2.6. 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2445 7894878c-1315-0410-8ee3-d5d059ff63e0
2004-04-17 17:20:01 +00:00

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30 KiB
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/*
mtp008.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 2001 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/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/i2c-proc.h>
#include <linux/init.h>
#include "version.h"
MODULE_LICENSE("GPL");
/* 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 nr range 1-3 */
#define MTP008_REG_PWM_CTRL(nr) (0x52 + (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
/* sensor pin types */
#define VOLTAGE 1
#define THERMISTOR 2
#define PIIDIODE 3
/*
* Conversion routines and macros. 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 + 5) / 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)
*/
static 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. nr range 1 to 3
*/
#define PWM_FROM_REG(val) (val)
#define PWM_TO_REG(val) (val)
#define PWMENABLE_FROM_REG(nr, val) (((val) >> ((nr) + 3)) & 1)
/*
* 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 {
struct i2c_client client;
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 */
u8 pwmenable; /* Register 0x57 value */
};
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_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 void mtp008_getsensortype(struct mtp008_data *data, u8 inp);
static int mtp008_id = 0;
static struct i2c_driver mtp008_driver =
{
.owner = THIS_MODULE,
.name = "MTP008 sensor driver",
.id = I2C_DRIVERID_MTP008,
.flags = I2C_DF_NOTIFY,
.attach_adapter = mtp008_attach_adapter,
.detach_client = mtp008_detach_client,
};
/* -- SENSORS SYSCTL START -- */
#define MTP008_SYSCTL_IN0 1000 /* Volts * 100 */
#define MTP008_SYSCTL_IN1 1001
#define MTP008_SYSCTL_IN2 1002
#define MTP008_SYSCTL_IN3 1003
#define MTP008_SYSCTL_IN4 1004
#define MTP008_SYSCTL_IN5 1005
#define MTP008_SYSCTL_IN6 1006
#define MTP008_SYSCTL_FAN1 1101 /* Rotations/min */
#define MTP008_SYSCTL_FAN2 1102
#define MTP008_SYSCTL_FAN3 1103
#define MTP008_SYSCTL_TEMP1 1200 /* Degrees Celcius * 10 */
#define MTP008_SYSCTL_TEMP2 1201 /* Degrees Celcius * 10 */
#define MTP008_SYSCTL_TEMP3 1202 /* Degrees Celcius * 10 */
#define MTP008_SYSCTL_VID 1300 /* Volts * 100 */
#define MTP008_SYSCTL_PWM1 1401
#define MTP008_SYSCTL_PWM2 1402
#define MTP008_SYSCTL_PWM3 1403
#define MTP008_SYSCTL_SENS1 1501 /* 1, 2, or Beta (3000-5000) */
#define MTP008_SYSCTL_SENS2 1502
#define MTP008_SYSCTL_SENS3 1503
#define MTP008_SYSCTL_FAN_DIV 2000 /* 1, 2, 4 or 8 */
#define MTP008_SYSCTL_ALARMS 2001 /* bitvector */
#define MTP008_SYSCTL_BEEP 2002 /* bitvector */
#define MTP008_ALARM_IN0 0x0001
#define MTP008_ALARM_IN1 0x0002
#define MTP008_ALARM_IN2 0x0004
#define MTP008_ALARM_IN3 0x0008
#define MTP008_ALARM_IN4 0x0100
#define MTP008_ALARM_IN5 0x0200
#define MTP008_ALARM_IN6 0x0400
#define MTP008_ALARM_FAN1 0x0040
#define MTP008_ALARM_FAN2 0x0080
#define MTP008_ALARM_FAN3 0x0800
#define MTP008_ALARM_TEMP1 0x0010
#define MTP008_ALARM_TEMP2 0x0100
#define MTP008_ALARM_TEMP3 0x0200
/* -- SENSORS SYSCTL END -- */
/* 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,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_in},
{MTP008_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_FAN3, "fan3", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_fan},
{MTP008_SYSCTL_TEMP1, "temp1", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_temp},
{MTP008_SYSCTL_TEMP2, "temp2", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_temp_add},
{MTP008_SYSCTL_TEMP3, "temp3", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_temp_add},
{MTP008_SYSCTL_VID, "vid", NULL, 0, 0444, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_vid},
{MTP008_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_fan_div},
{MTP008_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_alarms},
{MTP008_SYSCTL_BEEP, "beep", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_beep},
{MTP008_SYSCTL_PWM1, "pwm1", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_PWM2, "pwm2", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_PWM3, "pwm3", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_pwm},
{MTP008_SYSCTL_SENS1, "sensor1", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_sens},
{MTP008_SYSCTL_SENS2, "sensor2", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &mtp008_sens},
{MTP008_SYSCTL_SENS3, "sensor3", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_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)
*/
static 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 (!(data = kmalloc(sizeof(struct mtp008_data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
new_client = &data->client;
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 = i2c_register_entry(new_client, type_name,
mtp008_dir_table_template)) < 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(data);
ERROR0:
return err;
}
static int mtp008_detach_client(struct i2c_client *client)
{
int err;
i2c_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->data);
return 0;
}
static int mtp008_read_value(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg) & 0xff;
}
static 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. */
static void mtp008_init_client(struct i2c_client *client)
{
u8 save1, save2;
struct mtp008_data *data;
data = client->data;
/*
* Initialize the Myson MTP008 hardware monitoring chip.
* Save the pin settings that the BIOS hopefully set.
*/
save1 = mtp008_read_value(client, MTP008_REG_PIN_CTRL1);
save2 = mtp008_read_value(client, MTP008_REG_PIN_CTRL2);
mtp008_write_value(client, MTP008_REG_CONFIG,
(mtp008_read_value(client, MTP008_REG_CONFIG) & 0x7f) | 0x80);
mtp008_write_value(client, MTP008_REG_PIN_CTRL1, save1);
mtp008_write_value(client, MTP008_REG_PIN_CTRL2, save2);
mtp008_getsensortype(data, save2);
/*
* Start monitoring.
*/
mtp008_write_value(
client, MTP008_REG_CONFIG,
(mtp008_read_value(client, MTP008_REG_CONFIG) & 0xf7) | 0x01
);
}
static 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 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 sensor configuration.
*/
inp = mtp008_read_value(client, MTP008_REG_PIN_CTRL2);
mtp008_getsensortype(data, inp);
data->pwmenable = inp;
/*
* Read the PWM registers if enabled.
*/
for (i = 1; i <= 3; i++)
{
if(PWMENABLE_FROM_REG(i, inp))
data->pwm[i-1] = mtp008_read_value(client,
MTP008_REG_PWM_CTRL(i));
else
data->pwm[i-1] = 255;
}
/*
* Read the fan sensors. Skip 3 if PWM1 enabled.
*/
for (i = 1; i <= 3; i++) {
if(i == 3 && PWMENABLE_FROM_REG(1, inp)) {
data->fan[2] = 0;
data->fan_min[2] = 0;
} else {
data->fan[i-1] = mtp008_read_value(client,
MTP008_REG_FAN(i));
data->fan_min[i-1] = mtp008_read_value(client,
MTP008_REG_FAN_MIN(i));
}
}
data->last_updated = jiffies;
data->valid = 1;
}
up(&data->update_lock);
}
static void mtp008_getsensortype(struct mtp008_data *data, u8 inp)
{
inp &= 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 */
}
/* 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);
if((nr != 4 && nr != 5) || data->sens[nr - 3] == VOLTAGE) {
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]);
} else {
results[0] = 0;
results[1] = 0;
results[2] = 0;
}
*nrels_mag = 3;
break;
case SENSORS_PROC_REAL_WRITE:
if((nr != 4 && nr != 5) || data->sens[nr - 3] == VOLTAGE) {
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 + 1),
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);
if(data->sens[nr - 3] != VOLTAGE) {
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]);
} else {
results[0] = 0;
results[1] = 0;
results[2] = 0;
}
*nrels_mag = 3;
break;
case SENSORS_PROC_REAL_WRITE:
if(data->sens[nr - 3] != VOLTAGE) {
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 >= 1) {
val = mtp008_read_value(client, MTP008_REG_VID_FANDIV);
if (*nrels_mag >= 2) {
data->fan_div[1] = DIV_TO_REG(results[1]);
val = (val & 0x3f) |
(data->fan_div[1] & 0x03) << 6;
}
data->fan_div[0] = DIV_TO_REG(results[0]);
val = (val & 0xcf) | (data->fan_div[0] & 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]);
results[1] = PWMENABLE_FROM_REG(nr + 1, data->pwmenable);
*nrels_mag = 2;
break;
case SENSORS_PROC_REAL_WRITE:
if (*nrels_mag >= 1) {
if (*nrels_mag >= 2) {
if(results[1])
data->pwmenable |= 0x10 << nr;
else
data->pwmenable &= ~(0x10 << nr);
mtp008_write_value(client, MTP008_REG_PIN_CTRL2,
data->pwmenable);
}
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 = 1 + 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 - 1];
*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 THERMISTOR:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp & ~MTP008_CFG_VT1_PII);
data->sens[0] = 2;
return;
case PIIDIODE:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT1_PII);
data->sens[0] = 3;
return;
}
break;
case 2: /* AIN, VT or PII */
tmp &= ~MTP008_CFG_VT2_MASK;
opts = "1, 2 or 3";
switch (results[0]) {
case VOLTAGE:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_AIN);
data->sens[1] = 1;
return;
case THERMISTOR:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_VT);
data->sens[1] = 2;
return;
case PIIDIODE:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT2_PII);
data->sens[1] = 3;
return;
}
break;
case 3: /* AIN or VT */
opts = "1 or 2";
switch (results[0]) {
case VOLTAGE:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp & ~MTP008_CFG_VT3_VT);
data->sens[2] = 1;
return;
case THERMISTOR:
mtp008_write_value(
client, MTP008_REG_PIN_CTRL2,
tmp | MTP008_CFG_VT3_VT);
data->sens[2] = 2;
return;
}
break;
}
printk("mtp008.o: Invalid sensor type %ld "
"for sensor %d; must be %s.\n",
results[0], nr, opts);
}
}
}
static int __init sm_mtp008_init(void)
{
printk("mtp008.o version %s (%s)\n", LM_VERSION, LM_DATE);
return i2c_add_driver(&mtp008_driver);
}
static void __exit sm_mtp008_exit(void)
{
i2c_del_driver(&mtp008_driver);
}
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "
"Philip Edelbrock <phil@netroedge.com>, "
"and Kris Van Hees <aedil@alchar.org>");
MODULE_DESCRIPTION("MTP008 driver");
module_init(sm_mtp008_init);
module_exit(sm_mtp008_exit);
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