mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 02:23:16 +00:00
6055fae8ac
Drivers should be including <linux/io.h> instead of <asm/io.h>. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Alistair John Strachan <alistair@devzero.co.uk> Cc: Nicolas Boichat <nicolas@boichat.ch> Cc: Juerg Haefliger <juergh@gmail.com> Cc: Frank Seidel <frank@f-seidel.de> Acked-by: Jim Cromie <jim.cromie@gmail.com> Cc: "Mark M. Hoffman" <mhoffman@lightlink.com> Cc: Roger Lucas <vt8231@hiddenengine.co.uk> Signed-off-by: Jean Delvare <khali@linux-fr.org>
798 lines
23 KiB
C
798 lines
23 KiB
C
/*
|
|
smsc47m1.c - Part of lm_sensors, Linux kernel modules
|
|
for hardware monitoring
|
|
|
|
Supports the SMSC LPC47B27x, LPC47M10x, LPC47M112, LPC47M13x,
|
|
LPC47M14x, LPC47M15x, LPC47M192, LPC47M292 and LPC47M997
|
|
Super-I/O chips.
|
|
|
|
Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
|
|
Copyright (C) 2004-2007 Jean Delvare <khali@linux-fr.org>
|
|
Ported to Linux 2.6 by Gabriele Gorla <gorlik@yahoo.com>
|
|
and Jean Delvare
|
|
|
|
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/ioport.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/hwmon.h>
|
|
#include <linux/hwmon-sysfs.h>
|
|
#include <linux/err.h>
|
|
#include <linux/init.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/sysfs.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/io.h>
|
|
|
|
static unsigned short force_id;
|
|
module_param(force_id, ushort, 0);
|
|
MODULE_PARM_DESC(force_id, "Override the detected device ID");
|
|
|
|
static struct platform_device *pdev;
|
|
|
|
#define DRVNAME "smsc47m1"
|
|
enum chips { smsc47m1, smsc47m2 };
|
|
|
|
/* Super-I/0 registers and commands */
|
|
|
|
#define REG 0x2e /* The register to read/write */
|
|
#define VAL 0x2f /* The value to read/write */
|
|
|
|
static inline void
|
|
superio_outb(int reg, int val)
|
|
{
|
|
outb(reg, REG);
|
|
outb(val, VAL);
|
|
}
|
|
|
|
static inline int
|
|
superio_inb(int reg)
|
|
{
|
|
outb(reg, REG);
|
|
return inb(VAL);
|
|
}
|
|
|
|
/* logical device for fans is 0x0A */
|
|
#define superio_select() superio_outb(0x07, 0x0A)
|
|
|
|
static inline void
|
|
superio_enter(void)
|
|
{
|
|
outb(0x55, REG);
|
|
}
|
|
|
|
static inline void
|
|
superio_exit(void)
|
|
{
|
|
outb(0xAA, REG);
|
|
}
|
|
|
|
#define SUPERIO_REG_ACT 0x30
|
|
#define SUPERIO_REG_BASE 0x60
|
|
#define SUPERIO_REG_DEVID 0x20
|
|
#define SUPERIO_REG_DEVREV 0x21
|
|
|
|
/* Logical device registers */
|
|
|
|
#define SMSC_EXTENT 0x80
|
|
|
|
/* nr is 0 or 1 in the macros below */
|
|
#define SMSC47M1_REG_ALARM 0x04
|
|
#define SMSC47M1_REG_TPIN(nr) (0x34 - (nr))
|
|
#define SMSC47M1_REG_PPIN(nr) (0x36 - (nr))
|
|
#define SMSC47M1_REG_FANDIV 0x58
|
|
|
|
static const u8 SMSC47M1_REG_FAN[3] = { 0x59, 0x5a, 0x6b };
|
|
static const u8 SMSC47M1_REG_FAN_PRELOAD[3] = { 0x5b, 0x5c, 0x6c };
|
|
static const u8 SMSC47M1_REG_PWM[3] = { 0x56, 0x57, 0x69 };
|
|
|
|
#define SMSC47M2_REG_ALARM6 0x09
|
|
#define SMSC47M2_REG_TPIN1 0x38
|
|
#define SMSC47M2_REG_TPIN2 0x37
|
|
#define SMSC47M2_REG_TPIN3 0x2d
|
|
#define SMSC47M2_REG_PPIN3 0x2c
|
|
#define SMSC47M2_REG_FANDIV3 0x6a
|
|
|
|
#define MIN_FROM_REG(reg,div) ((reg)>=192 ? 0 : \
|
|
983040/((192-(reg))*(div)))
|
|
#define FAN_FROM_REG(reg,div,preload) ((reg)<=(preload) || (reg)==255 ? 0 : \
|
|
983040/(((reg)-(preload))*(div)))
|
|
#define DIV_FROM_REG(reg) (1 << (reg))
|
|
#define PWM_FROM_REG(reg) (((reg) & 0x7E) << 1)
|
|
#define PWM_EN_FROM_REG(reg) ((~(reg)) & 0x01)
|
|
#define PWM_TO_REG(reg) (((reg) >> 1) & 0x7E)
|
|
|
|
struct smsc47m1_data {
|
|
unsigned short addr;
|
|
const char *name;
|
|
enum chips type;
|
|
struct device *hwmon_dev;
|
|
|
|
struct mutex update_lock;
|
|
unsigned long last_updated; /* In jiffies */
|
|
|
|
u8 fan[3]; /* Register value */
|
|
u8 fan_preload[3]; /* Register value */
|
|
u8 fan_div[3]; /* Register encoding, shifted right */
|
|
u8 alarms; /* Register encoding */
|
|
u8 pwm[3]; /* Register value (bit 0 is disable) */
|
|
};
|
|
|
|
struct smsc47m1_sio_data {
|
|
enum chips type;
|
|
};
|
|
|
|
|
|
static int smsc47m1_probe(struct platform_device *pdev);
|
|
static int __devexit smsc47m1_remove(struct platform_device *pdev);
|
|
static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
|
|
int init);
|
|
|
|
static inline int smsc47m1_read_value(struct smsc47m1_data *data, u8 reg)
|
|
{
|
|
return inb_p(data->addr + reg);
|
|
}
|
|
|
|
static inline void smsc47m1_write_value(struct smsc47m1_data *data, u8 reg,
|
|
u8 value)
|
|
{
|
|
outb_p(value, data->addr + reg);
|
|
}
|
|
|
|
static struct platform_driver smsc47m1_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = DRVNAME,
|
|
},
|
|
.probe = smsc47m1_probe,
|
|
.remove = __devexit_p(smsc47m1_remove),
|
|
};
|
|
|
|
static ssize_t get_fan(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
int nr = attr->index;
|
|
/* This chip (stupidly) stops monitoring fan speed if PWM is
|
|
enabled and duty cycle is 0%. This is fine if the monitoring
|
|
and control concern the same fan, but troublesome if they are
|
|
not (which could as well happen). */
|
|
int rpm = (data->pwm[nr] & 0x7F) == 0x00 ? 0 :
|
|
FAN_FROM_REG(data->fan[nr],
|
|
DIV_FROM_REG(data->fan_div[nr]),
|
|
data->fan_preload[nr]);
|
|
return sprintf(buf, "%d\n", rpm);
|
|
}
|
|
|
|
static ssize_t get_fan_min(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
int nr = attr->index;
|
|
int rpm = MIN_FROM_REG(data->fan_preload[nr],
|
|
DIV_FROM_REG(data->fan_div[nr]));
|
|
return sprintf(buf, "%d\n", rpm);
|
|
}
|
|
|
|
static ssize_t get_fan_div(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[attr->index]));
|
|
}
|
|
|
|
static ssize_t get_fan_alarm(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
int bitnr = to_sensor_dev_attr(devattr)->index;
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
|
|
}
|
|
|
|
static ssize_t get_pwm(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[attr->index]));
|
|
}
|
|
|
|
static ssize_t get_pwm_en(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
return sprintf(buf, "%d\n", PWM_EN_FROM_REG(data->pwm[attr->index]));
|
|
}
|
|
|
|
static ssize_t get_alarms(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
|
|
return sprintf(buf, "%d\n", data->alarms);
|
|
}
|
|
|
|
static ssize_t set_fan_min(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
int nr = attr->index;
|
|
long rpmdiv, val = simple_strtol(buf, NULL, 10);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
rpmdiv = val * DIV_FROM_REG(data->fan_div[nr]);
|
|
|
|
if (983040 > 192 * rpmdiv || 2 * rpmdiv > 983040) {
|
|
mutex_unlock(&data->update_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
data->fan_preload[nr] = 192 - ((983040 + rpmdiv / 2) / rpmdiv);
|
|
smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr],
|
|
data->fan_preload[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
/* Note: we save and restore the fan minimum here, because its value is
|
|
determined in part by the fan clock divider. This follows the principle
|
|
of least surprise; the user doesn't expect the fan minimum to change just
|
|
because the divider changed. */
|
|
static ssize_t set_fan_div(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
int nr = attr->index;
|
|
long new_div = simple_strtol(buf, NULL, 10), tmp;
|
|
u8 old_div = DIV_FROM_REG(data->fan_div[nr]);
|
|
|
|
if (new_div == old_div) /* No change */
|
|
return count;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
switch (new_div) {
|
|
case 1: data->fan_div[nr] = 0; break;
|
|
case 2: data->fan_div[nr] = 1; break;
|
|
case 4: data->fan_div[nr] = 2; break;
|
|
case 8: data->fan_div[nr] = 3; break;
|
|
default:
|
|
mutex_unlock(&data->update_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (nr) {
|
|
case 0:
|
|
case 1:
|
|
tmp = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV)
|
|
& ~(0x03 << (4 + 2 * nr));
|
|
tmp |= data->fan_div[nr] << (4 + 2 * nr);
|
|
smsc47m1_write_value(data, SMSC47M1_REG_FANDIV, tmp);
|
|
break;
|
|
case 2:
|
|
tmp = smsc47m1_read_value(data, SMSC47M2_REG_FANDIV3) & 0xCF;
|
|
tmp |= data->fan_div[2] << 4;
|
|
smsc47m1_write_value(data, SMSC47M2_REG_FANDIV3, tmp);
|
|
break;
|
|
}
|
|
|
|
/* Preserve fan min */
|
|
tmp = 192 - (old_div * (192 - data->fan_preload[nr])
|
|
+ new_div / 2) / new_div;
|
|
data->fan_preload[nr] = SENSORS_LIMIT(tmp, 0, 191);
|
|
smsc47m1_write_value(data, SMSC47M1_REG_FAN_PRELOAD[nr],
|
|
data->fan_preload[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t set_pwm(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
int nr = attr->index;
|
|
long val = simple_strtol(buf, NULL, 10);
|
|
|
|
if (val < 0 || val > 255)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->pwm[nr] &= 0x81; /* Preserve additional bits */
|
|
data->pwm[nr] |= PWM_TO_REG(val);
|
|
smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr],
|
|
data->pwm[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t set_pwm_en(struct device *dev, struct device_attribute
|
|
*devattr, const char *buf, size_t count)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
int nr = attr->index;
|
|
long val = simple_strtol(buf, NULL, 10);
|
|
|
|
if (val != 0 && val != 1)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->pwm[nr] &= 0xFE; /* preserve the other bits */
|
|
data->pwm[nr] |= !val;
|
|
smsc47m1_write_value(data, SMSC47M1_REG_PWM[nr],
|
|
data->pwm[nr]);
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return count;
|
|
}
|
|
|
|
#define fan_present(offset) \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, get_fan, \
|
|
NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
|
|
get_fan_min, set_fan_min, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
|
|
get_fan_div, set_fan_div, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(fan##offset##_alarm, S_IRUGO, get_fan_alarm, \
|
|
NULL, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \
|
|
get_pwm, set_pwm, offset - 1); \
|
|
static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \
|
|
get_pwm_en, set_pwm_en, offset - 1)
|
|
|
|
fan_present(1);
|
|
fan_present(2);
|
|
fan_present(3);
|
|
|
|
static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
|
|
|
|
static ssize_t show_name(struct device *dev, struct device_attribute
|
|
*devattr, char *buf)
|
|
{
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
|
|
return sprintf(buf, "%s\n", data->name);
|
|
}
|
|
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
|
|
|
/* Almost all sysfs files may or may not be created depending on the chip
|
|
setup so we create them individually. It is still convenient to define a
|
|
group to remove them all at once. */
|
|
static struct attribute *smsc47m1_attributes[] = {
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_div.dev_attr.attr,
|
|
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2.dev_attr.attr,
|
|
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3.dev_attr.attr,
|
|
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
|
|
|
|
&dev_attr_alarms.attr,
|
|
&dev_attr_name.attr,
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group smsc47m1_group = {
|
|
.attrs = smsc47m1_attributes,
|
|
};
|
|
|
|
static int __init smsc47m1_find(unsigned short *addr,
|
|
struct smsc47m1_sio_data *sio_data)
|
|
{
|
|
u8 val;
|
|
|
|
superio_enter();
|
|
val = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID);
|
|
|
|
/*
|
|
* SMSC LPC47M10x/LPC47M112/LPC47M13x (device id 0x59), LPC47M14x
|
|
* (device id 0x5F) and LPC47B27x (device id 0x51) have fan control.
|
|
* The LPC47M15x and LPC47M192 chips "with hardware monitoring block"
|
|
* can do much more besides (device id 0x60).
|
|
* The LPC47M997 is undocumented, but seems to be compatible with
|
|
* the LPC47M192, and has the same device id.
|
|
* The LPC47M292 (device id 0x6B) is somewhat compatible, but it
|
|
* supports a 3rd fan, and the pin configuration registers are
|
|
* unfortunately different.
|
|
* The LPC47M233 has the same device id (0x6B) but is not compatible.
|
|
* We check the high bit of the device revision register to
|
|
* differentiate them.
|
|
*/
|
|
switch (val) {
|
|
case 0x51:
|
|
pr_info(DRVNAME ": Found SMSC LPC47B27x\n");
|
|
sio_data->type = smsc47m1;
|
|
break;
|
|
case 0x59:
|
|
pr_info(DRVNAME ": Found SMSC LPC47M10x/LPC47M112/LPC47M13x\n");
|
|
sio_data->type = smsc47m1;
|
|
break;
|
|
case 0x5F:
|
|
pr_info(DRVNAME ": Found SMSC LPC47M14x\n");
|
|
sio_data->type = smsc47m1;
|
|
break;
|
|
case 0x60:
|
|
pr_info(DRVNAME ": Found SMSC LPC47M15x/LPC47M192/LPC47M997\n");
|
|
sio_data->type = smsc47m1;
|
|
break;
|
|
case 0x6B:
|
|
if (superio_inb(SUPERIO_REG_DEVREV) & 0x80) {
|
|
pr_debug(DRVNAME ": "
|
|
"Found SMSC LPC47M233, unsupported\n");
|
|
superio_exit();
|
|
return -ENODEV;
|
|
}
|
|
|
|
pr_info(DRVNAME ": Found SMSC LPC47M292\n");
|
|
sio_data->type = smsc47m2;
|
|
break;
|
|
default:
|
|
superio_exit();
|
|
return -ENODEV;
|
|
}
|
|
|
|
superio_select();
|
|
*addr = (superio_inb(SUPERIO_REG_BASE) << 8)
|
|
| superio_inb(SUPERIO_REG_BASE + 1);
|
|
val = superio_inb(SUPERIO_REG_ACT);
|
|
if (*addr == 0 || (val & 0x01) == 0) {
|
|
pr_info(DRVNAME ": Device is disabled, will not use\n");
|
|
superio_exit();
|
|
return -ENODEV;
|
|
}
|
|
|
|
superio_exit();
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit smsc47m1_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct smsc47m1_sio_data *sio_data = dev->platform_data;
|
|
struct smsc47m1_data *data;
|
|
struct resource *res;
|
|
int err = 0;
|
|
int fan1, fan2, fan3, pwm1, pwm2, pwm3;
|
|
|
|
static const char *names[] = {
|
|
"smsc47m1",
|
|
"smsc47m2",
|
|
};
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
|
if (!request_region(res->start, SMSC_EXTENT, DRVNAME)) {
|
|
dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
|
|
(unsigned long)res->start,
|
|
(unsigned long)res->end);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (!(data = kzalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
|
|
err = -ENOMEM;
|
|
goto error_release;
|
|
}
|
|
|
|
data->addr = res->start;
|
|
data->type = sio_data->type;
|
|
data->name = names[sio_data->type];
|
|
mutex_init(&data->update_lock);
|
|
platform_set_drvdata(pdev, data);
|
|
|
|
/* If no function is properly configured, there's no point in
|
|
actually registering the chip. */
|
|
pwm1 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(0)) & 0x05)
|
|
== 0x04;
|
|
pwm2 = (smsc47m1_read_value(data, SMSC47M1_REG_PPIN(1)) & 0x05)
|
|
== 0x04;
|
|
if (data->type == smsc47m2) {
|
|
fan1 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN1)
|
|
& 0x0d) == 0x09;
|
|
fan2 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN2)
|
|
& 0x0d) == 0x09;
|
|
fan3 = (smsc47m1_read_value(data, SMSC47M2_REG_TPIN3)
|
|
& 0x0d) == 0x0d;
|
|
pwm3 = (smsc47m1_read_value(data, SMSC47M2_REG_PPIN3)
|
|
& 0x0d) == 0x08;
|
|
} else {
|
|
fan1 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(0))
|
|
& 0x05) == 0x05;
|
|
fan2 = (smsc47m1_read_value(data, SMSC47M1_REG_TPIN(1))
|
|
& 0x05) == 0x05;
|
|
fan3 = 0;
|
|
pwm3 = 0;
|
|
}
|
|
if (!(fan1 || fan2 || fan3 || pwm1 || pwm2 || pwm3)) {
|
|
dev_warn(dev, "Device not configured, will not use\n");
|
|
err = -ENODEV;
|
|
goto error_free;
|
|
}
|
|
|
|
/* Some values (fan min, clock dividers, pwm registers) may be
|
|
needed before any update is triggered, so we better read them
|
|
at least once here. We don't usually do it that way, but in
|
|
this particular case, manually reading 5 registers out of 8
|
|
doesn't make much sense and we're better using the existing
|
|
function. */
|
|
smsc47m1_update_device(dev, 1);
|
|
|
|
/* Register sysfs hooks */
|
|
if (fan1) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_fan1_input.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan1_min.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan1_div.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr)))
|
|
goto error_remove_files;
|
|
} else
|
|
dev_dbg(dev, "Fan 1 not enabled by hardware, skipping\n");
|
|
|
|
if (fan2) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_fan2_input.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan2_min.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan2_div.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan2_alarm.dev_attr)))
|
|
goto error_remove_files;
|
|
} else
|
|
dev_dbg(dev, "Fan 2 not enabled by hardware, skipping\n");
|
|
|
|
if (fan3) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_fan3_input.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan3_min.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan3_div.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_fan3_alarm.dev_attr)))
|
|
goto error_remove_files;
|
|
} else if (data->type == smsc47m2)
|
|
dev_dbg(dev, "Fan 3 not enabled by hardware, skipping\n");
|
|
|
|
if (pwm1) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm1.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm1_enable.dev_attr)))
|
|
goto error_remove_files;
|
|
} else
|
|
dev_dbg(dev, "PWM 1 not enabled by hardware, skipping\n");
|
|
|
|
if (pwm2) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm2.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm2_enable.dev_attr)))
|
|
goto error_remove_files;
|
|
} else
|
|
dev_dbg(dev, "PWM 2 not enabled by hardware, skipping\n");
|
|
|
|
if (pwm3) {
|
|
if ((err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm3.dev_attr))
|
|
|| (err = device_create_file(dev,
|
|
&sensor_dev_attr_pwm3_enable.dev_attr)))
|
|
goto error_remove_files;
|
|
} else if (data->type == smsc47m2)
|
|
dev_dbg(dev, "PWM 3 not enabled by hardware, skipping\n");
|
|
|
|
if ((err = device_create_file(dev, &dev_attr_alarms)))
|
|
goto error_remove_files;
|
|
if ((err = device_create_file(dev, &dev_attr_name)))
|
|
goto error_remove_files;
|
|
|
|
data->hwmon_dev = hwmon_device_register(dev);
|
|
if (IS_ERR(data->hwmon_dev)) {
|
|
err = PTR_ERR(data->hwmon_dev);
|
|
goto error_remove_files;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_remove_files:
|
|
sysfs_remove_group(&dev->kobj, &smsc47m1_group);
|
|
error_free:
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(data);
|
|
error_release:
|
|
release_region(res->start, SMSC_EXTENT);
|
|
return err;
|
|
}
|
|
|
|
static int __devexit smsc47m1_remove(struct platform_device *pdev)
|
|
{
|
|
struct smsc47m1_data *data = platform_get_drvdata(pdev);
|
|
struct resource *res;
|
|
|
|
hwmon_device_unregister(data->hwmon_dev);
|
|
sysfs_remove_group(&pdev->dev.kobj, &smsc47m1_group);
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
|
release_region(res->start, SMSC_EXTENT);
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
|
|
int init)
|
|
{
|
|
struct smsc47m1_data *data = dev_get_drvdata(dev);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) {
|
|
int i, fan_nr;
|
|
fan_nr = data->type == smsc47m2 ? 3 : 2;
|
|
|
|
for (i = 0; i < fan_nr; i++) {
|
|
data->fan[i] = smsc47m1_read_value(data,
|
|
SMSC47M1_REG_FAN[i]);
|
|
data->fan_preload[i] = smsc47m1_read_value(data,
|
|
SMSC47M1_REG_FAN_PRELOAD[i]);
|
|
data->pwm[i] = smsc47m1_read_value(data,
|
|
SMSC47M1_REG_PWM[i]);
|
|
}
|
|
|
|
i = smsc47m1_read_value(data, SMSC47M1_REG_FANDIV);
|
|
data->fan_div[0] = (i >> 4) & 0x03;
|
|
data->fan_div[1] = i >> 6;
|
|
|
|
data->alarms = smsc47m1_read_value(data,
|
|
SMSC47M1_REG_ALARM) >> 6;
|
|
/* Clear alarms if needed */
|
|
if (data->alarms)
|
|
smsc47m1_write_value(data, SMSC47M1_REG_ALARM, 0xC0);
|
|
|
|
if (fan_nr >= 3) {
|
|
data->fan_div[2] = (smsc47m1_read_value(data,
|
|
SMSC47M2_REG_FANDIV3) >> 4) & 0x03;
|
|
data->alarms |= (smsc47m1_read_value(data,
|
|
SMSC47M2_REG_ALARM6) & 0x40) >> 4;
|
|
/* Clear alarm if needed */
|
|
if (data->alarms & 0x04)
|
|
smsc47m1_write_value(data,
|
|
SMSC47M2_REG_ALARM6,
|
|
0x40);
|
|
}
|
|
|
|
data->last_updated = jiffies;
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
return data;
|
|
}
|
|
|
|
static int __init smsc47m1_device_add(unsigned short address,
|
|
const struct smsc47m1_sio_data *sio_data)
|
|
{
|
|
struct resource res = {
|
|
.start = address,
|
|
.end = address + SMSC_EXTENT - 1,
|
|
.name = DRVNAME,
|
|
.flags = IORESOURCE_IO,
|
|
};
|
|
int err;
|
|
|
|
err = acpi_check_resource_conflict(&res);
|
|
if (err)
|
|
goto exit;
|
|
|
|
pdev = platform_device_alloc(DRVNAME, address);
|
|
if (!pdev) {
|
|
err = -ENOMEM;
|
|
printk(KERN_ERR DRVNAME ": Device allocation failed\n");
|
|
goto exit;
|
|
}
|
|
|
|
err = platform_device_add_resources(pdev, &res, 1);
|
|
if (err) {
|
|
printk(KERN_ERR DRVNAME ": Device resource addition failed "
|
|
"(%d)\n", err);
|
|
goto exit_device_put;
|
|
}
|
|
|
|
err = platform_device_add_data(pdev, sio_data,
|
|
sizeof(struct smsc47m1_sio_data));
|
|
if (err) {
|
|
printk(KERN_ERR DRVNAME ": Platform data allocation failed\n");
|
|
goto exit_device_put;
|
|
}
|
|
|
|
err = platform_device_add(pdev);
|
|
if (err) {
|
|
printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n",
|
|
err);
|
|
goto exit_device_put;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit_device_put:
|
|
platform_device_put(pdev);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static int __init sm_smsc47m1_init(void)
|
|
{
|
|
int err;
|
|
unsigned short address;
|
|
struct smsc47m1_sio_data sio_data;
|
|
|
|
if (smsc47m1_find(&address, &sio_data))
|
|
return -ENODEV;
|
|
|
|
err = platform_driver_register(&smsc47m1_driver);
|
|
if (err)
|
|
goto exit;
|
|
|
|
/* Sets global pdev as a side effect */
|
|
err = smsc47m1_device_add(address, &sio_data);
|
|
if (err)
|
|
goto exit_driver;
|
|
|
|
return 0;
|
|
|
|
exit_driver:
|
|
platform_driver_unregister(&smsc47m1_driver);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static void __exit sm_smsc47m1_exit(void)
|
|
{
|
|
platform_device_unregister(pdev);
|
|
platform_driver_unregister(&smsc47m1_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>");
|
|
MODULE_DESCRIPTION("SMSC LPC47M1xx fan sensors driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(sm_smsc47m1_init);
|
|
module_exit(sm_smsc47m1_exit);
|