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linux/drivers/hwmon/pc87427.c
Bill Pemberton 281dfd0b6e hwmon: remove use of __devexit 
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Alistair John Strachan <alistair@devzero.co.uk>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Juerg Haefliger <juergh@gmail.com>
Cc: Andreas Herrmann <herrmann.der.user@googlemail.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: Rudolf Marek <r.marek@assembler.cz>
Cc: Jim Cromie <jim.cromie@gmail.com>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Roger Lucas <vt8231@hiddenengine.co.uk>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 11:50:34 -08:00

1355 lines
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Raw Blame History

/*
* pc87427.c - hardware monitoring driver for the
* National Semiconductor PC87427 Super-I/O chip
* Copyright (C) 2006, 2008, 2010 Jean Delvare <khali@linux-fr.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp devid
* PC87427 - 8 4 6 0xF2
*
* This driver assumes that no more than one chip is present.
* Only fans are fully supported so far. Temperatures are in read-only
* mode, and voltages aren't supported at all.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.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/mutex.h>
#include <linux/sysfs.h>
#include <linux/ioport.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 "pc87427"
/*
* The lock mutex protects both the I/O accesses (needed because the
* device is using banked registers) and the register cache (needed to keep
* the data in the registers and the cache in sync at any time).
*/
struct pc87427_data {
struct device *hwmon_dev;
struct mutex lock;
int address[2];
const char *name;
unsigned long last_updated; /* in jiffies */
u8 fan_enabled; /* bit vector */
u16 fan[8]; /* register values */
u16 fan_min[8]; /* register values */
u8 fan_status[8]; /* register values */
u8 pwm_enabled; /* bit vector */
u8 pwm_auto_ok; /* bit vector */
u8 pwm_enable[4]; /* register values */
u8 pwm[4]; /* register values */
u8 temp_enabled; /* bit vector */
s16 temp[6]; /* register values */
s8 temp_min[6]; /* register values */
s8 temp_max[6]; /* register values */
s8 temp_crit[6]; /* register values */
u8 temp_status[6]; /* register values */
u8 temp_type[6]; /* register values */
};
struct pc87427_sio_data {
unsigned short address[2];
u8 has_fanin;
u8 has_fanout;
};
/*
* Super-I/O registers and operations
*/
#define SIOREG_LDSEL 0x07 /* Logical device select */
#define SIOREG_DEVID 0x20 /* Device ID */
#define SIOREG_CF2 0x22 /* Configuration 2 */
#define SIOREG_CF3 0x23 /* Configuration 3 */
#define SIOREG_CF4 0x24 /* Configuration 4 */
#define SIOREG_CF5 0x25 /* Configuration 5 */
#define SIOREG_CFB 0x2B /* Configuration B */
#define SIOREG_CFC 0x2C /* Configuration C */
#define SIOREG_CFD 0x2D /* Configuration D */
#define SIOREG_ACT 0x30 /* Device activation */
#define SIOREG_MAP 0x50 /* I/O or memory mapping */
#define SIOREG_IOBASE 0x60 /* I/O base address */
static const u8 logdev[2] = { 0x09, 0x14 };
static const char *logdev_str[2] = { DRVNAME " FMC", DRVNAME " HMC" };
#define LD_FAN 0
#define LD_IN 1
#define LD_TEMP 1
static inline void superio_outb(int sioaddr, int reg, int val)
{
outb(reg, sioaddr);
outb(val, sioaddr + 1);
}
static inline int superio_inb(int sioaddr, int reg)
{
outb(reg, sioaddr);
return inb(sioaddr + 1);
}
static inline void superio_exit(int sioaddr)
{
outb(0x02, sioaddr);
outb(0x02, sioaddr + 1);
}
/*
* Logical devices
*/
#define REGION_LENGTH 32
#define PC87427_REG_BANK 0x0f
#define BANK_FM(nr) (nr)
#define BANK_FT(nr) (0x08 + (nr))
#define BANK_FC(nr) (0x10 + (nr) * 2)
#define BANK_TM(nr) (nr)
#define BANK_VM(nr) (0x08 + (nr))
/*
* I/O access functions
*/
/* ldi is the logical device index */
static inline int pc87427_read8(struct pc87427_data *data, u8 ldi, u8 reg)
{
return inb(data->address[ldi] + reg);
}
/* Must be called with data->lock held, except during init */
static inline int pc87427_read8_bank(struct pc87427_data *data, u8 ldi,
u8 bank, u8 reg)
{
outb(bank, data->address[ldi] + PC87427_REG_BANK);
return inb(data->address[ldi] + reg);
}
/* Must be called with data->lock held, except during init */
static inline void pc87427_write8_bank(struct pc87427_data *data, u8 ldi,
u8 bank, u8 reg, u8 value)
{
outb(bank, data->address[ldi] + PC87427_REG_BANK);
outb(value, data->address[ldi] + reg);
}
/*
* Fan registers and conversions
*/
/* fan data registers are 16-bit wide */
#define PC87427_REG_FAN 0x12
#define PC87427_REG_FAN_MIN 0x14
#define PC87427_REG_FAN_STATUS 0x10
#define FAN_STATUS_STALL (1 << 3)
#define FAN_STATUS_LOSPD (1 << 1)
#define FAN_STATUS_MONEN (1 << 0)
/*
* Dedicated function to read all registers related to a given fan input.
* This saves us quite a few locks and bank selections.
* Must be called with data->lock held.
* nr is from 0 to 7
*/
static void pc87427_readall_fan(struct pc87427_data *data, u8 nr)
{
int iobase = data->address[LD_FAN];
outb(BANK_FM(nr), iobase + PC87427_REG_BANK);
data->fan[nr] = inw(iobase + PC87427_REG_FAN);
data->fan_min[nr] = inw(iobase + PC87427_REG_FAN_MIN);
data->fan_status[nr] = inb(iobase + PC87427_REG_FAN_STATUS);
/* Clear fan alarm bits */
outb(data->fan_status[nr], iobase + PC87427_REG_FAN_STATUS);
}
/*
* The 2 LSB of fan speed registers are used for something different.
* The actual 2 LSB of the measurements are not available.
*/
static inline unsigned long fan_from_reg(u16 reg)
{
reg &= 0xfffc;
if (reg == 0x0000 || reg == 0xfffc)
return 0;
return 5400000UL / reg;
}
/* The 2 LSB of the fan speed limit registers are not significant. */
static inline u16 fan_to_reg(unsigned long val)
{
if (val < 83UL)
return 0xffff;
if (val >= 1350000UL)
return 0x0004;
return ((1350000UL + val / 2) / val) << 2;
}
/*
* PWM registers and conversions
*/
#define PC87427_REG_PWM_ENABLE 0x10
#define PC87427_REG_PWM_DUTY 0x12
#define PWM_ENABLE_MODE_MASK (7 << 4)
#define PWM_ENABLE_CTLEN (1 << 0)
#define PWM_MODE_MANUAL (0 << 4)
#define PWM_MODE_AUTO (1 << 4)
#define PWM_MODE_OFF (2 << 4)
#define PWM_MODE_ON (7 << 4)
/*
* Dedicated function to read all registers related to a given PWM output.
* This saves us quite a few locks and bank selections.
* Must be called with data->lock held.
* nr is from 0 to 3
*/
static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr)
{
int iobase = data->address[LD_FAN];
outb(BANK_FC(nr), iobase + PC87427_REG_BANK);
data->pwm_enable[nr] = inb(iobase + PC87427_REG_PWM_ENABLE);
data->pwm[nr] = inb(iobase + PC87427_REG_PWM_DUTY);
}
static inline int pwm_enable_from_reg(u8 reg)
{
switch (reg & PWM_ENABLE_MODE_MASK) {
case PWM_MODE_ON:
return 0;
case PWM_MODE_MANUAL:
case PWM_MODE_OFF:
return 1;
case PWM_MODE_AUTO:
return 2;
default:
return -EPROTO;
}
}
static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval)
{
switch (val) {
default:
return PWM_MODE_ON;
case 1:
return pwmval ? PWM_MODE_MANUAL : PWM_MODE_OFF;
case 2:
return PWM_MODE_AUTO;
}
}
/*
* Temperature registers and conversions
*/
#define PC87427_REG_TEMP_STATUS 0x10
#define PC87427_REG_TEMP 0x14
#define PC87427_REG_TEMP_MAX 0x18
#define PC87427_REG_TEMP_MIN 0x19
#define PC87427_REG_TEMP_CRIT 0x1a
#define PC87427_REG_TEMP_TYPE 0x1d
#define TEMP_STATUS_CHANEN (1 << 0)
#define TEMP_STATUS_LOWFLG (1 << 1)
#define TEMP_STATUS_HIGHFLG (1 << 2)
#define TEMP_STATUS_CRITFLG (1 << 3)
#define TEMP_STATUS_SENSERR (1 << 5)
#define TEMP_TYPE_MASK (3 << 5)
#define TEMP_TYPE_THERMISTOR (1 << 5)
#define TEMP_TYPE_REMOTE_DIODE (2 << 5)
#define TEMP_TYPE_LOCAL_DIODE (3 << 5)
/*
* Dedicated function to read all registers related to a given temperature
* input. This saves us quite a few locks and bank selections.
* Must be called with data->lock held.
* nr is from 0 to 5
*/
static void pc87427_readall_temp(struct pc87427_data *data, u8 nr)
{
int iobase = data->address[LD_TEMP];
outb(BANK_TM(nr), iobase + PC87427_REG_BANK);
data->temp[nr] = le16_to_cpu(inw(iobase + PC87427_REG_TEMP));
data->temp_max[nr] = inb(iobase + PC87427_REG_TEMP_MAX);
data->temp_min[nr] = inb(iobase + PC87427_REG_TEMP_MIN);
data->temp_crit[nr] = inb(iobase + PC87427_REG_TEMP_CRIT);
data->temp_type[nr] = inb(iobase + PC87427_REG_TEMP_TYPE);
data->temp_status[nr] = inb(iobase + PC87427_REG_TEMP_STATUS);
/* Clear fan alarm bits */
outb(data->temp_status[nr], iobase + PC87427_REG_TEMP_STATUS);
}
static inline unsigned int temp_type_from_reg(u8 reg)
{
switch (reg & TEMP_TYPE_MASK) {
case TEMP_TYPE_THERMISTOR:
return 4;
case TEMP_TYPE_REMOTE_DIODE:
case TEMP_TYPE_LOCAL_DIODE:
return 3;
default:
return 0;
}
}
/*
* We assume 8-bit thermal sensors; 9-bit thermal sensors are possible
* too, but I have no idea how to figure out when they are used.
*/
static inline long temp_from_reg(s16 reg)
{
return reg * 1000 / 256;
}
static inline long temp_from_reg8(s8 reg)
{
return reg * 1000;
}
/*
* Data interface
*/
static struct pc87427_data *pc87427_update_device(struct device *dev)
{
struct pc87427_data *data = dev_get_drvdata(dev);
int i;
mutex_lock(&data->lock);
if (!time_after(jiffies, data->last_updated + HZ)
&& data->last_updated)
goto done;
/* Fans */
for (i = 0; i < 8; i++) {
if (!(data->fan_enabled & (1 << i)))
continue;
pc87427_readall_fan(data, i);
}
/* PWM outputs */
for (i = 0; i < 4; i++) {
if (!(data->pwm_enabled & (1 << i)))
continue;
pc87427_readall_pwm(data, i);
}
/* Temperature channels */
for (i = 0; i < 6; i++) {
if (!(data->temp_enabled & (1 << i)))
continue;
pc87427_readall_temp(data, i);
}
data->last_updated = jiffies;
done:
mutex_unlock(&data->lock);
return data;
}
static ssize_t show_fan_input(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%lu\n", fan_from_reg(data->fan[nr]));
}
static ssize_t show_fan_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%lu\n", fan_from_reg(data->fan_min[nr]));
}
static ssize_t show_fan_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->fan_status[nr]
& FAN_STATUS_LOSPD));
}
static ssize_t show_fan_fault(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->fan_status[nr]
& FAN_STATUS_STALL));
}
static ssize_t set_fan_min(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct pc87427_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
unsigned long val;
int iobase = data->address[LD_FAN];
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
mutex_lock(&data->lock);
outb(BANK_FM(nr), iobase + PC87427_REG_BANK);
/*
* The low speed limit registers are read-only while monitoring
* is enabled, so we have to disable monitoring, then change the
* limit, and finally enable monitoring again.
*/
outb(0, iobase + PC87427_REG_FAN_STATUS);
data->fan_min[nr] = fan_to_reg(val);
outw(data->fan_min[nr], iobase + PC87427_REG_FAN_MIN);
outb(FAN_STATUS_MONEN, iobase + PC87427_REG_FAN_STATUS);
mutex_unlock(&data->lock);
return count;
}
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_input, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_input, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_input, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_input, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_input, NULL, 7);
static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 0);
static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 1);
static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 2);
static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 3);
static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 4);
static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 5);
static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 6);
static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO,
show_fan_min, set_fan_min, 7);
static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_fan_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_fan_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_fan_alarm, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_fan_alarm, NULL, 7);
static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_fault, S_IRUGO, show_fan_fault, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_fault, S_IRUGO, show_fan_fault, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_fault, S_IRUGO, show_fan_fault, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_fault, S_IRUGO, show_fan_fault, NULL, 7);
static struct attribute *pc87427_attributes_fan[8][5] = {
{
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan1_min.dev_attr.attr,
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
&sensor_dev_attr_fan1_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan2_min.dev_attr.attr,
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
&sensor_dev_attr_fan2_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan3_min.dev_attr.attr,
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
&sensor_dev_attr_fan3_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan4_min.dev_attr.attr,
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_fan4_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan5_input.dev_attr.attr,
&sensor_dev_attr_fan5_min.dev_attr.attr,
&sensor_dev_attr_fan5_alarm.dev_attr.attr,
&sensor_dev_attr_fan5_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan6_input.dev_attr.attr,
&sensor_dev_attr_fan6_min.dev_attr.attr,
&sensor_dev_attr_fan6_alarm.dev_attr.attr,
&sensor_dev_attr_fan6_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan7_input.dev_attr.attr,
&sensor_dev_attr_fan7_min.dev_attr.attr,
&sensor_dev_attr_fan7_alarm.dev_attr.attr,
&sensor_dev_attr_fan7_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan8_input.dev_attr.attr,
&sensor_dev_attr_fan8_min.dev_attr.attr,
&sensor_dev_attr_fan8_alarm.dev_attr.attr,
&sensor_dev_attr_fan8_fault.dev_attr.attr,
NULL
}
};
static const struct attribute_group pc87427_group_fan[8] = {
{ .attrs = pc87427_attributes_fan[0] },
{ .attrs = pc87427_attributes_fan[1] },
{ .attrs = pc87427_attributes_fan[2] },
{ .attrs = pc87427_attributes_fan[3] },
{ .attrs = pc87427_attributes_fan[4] },
{ .attrs = pc87427_attributes_fan[5] },
{ .attrs = pc87427_attributes_fan[6] },
{ .attrs = pc87427_attributes_fan[7] },
};
/*
* Must be called with data->lock held and pc87427_readall_pwm() freshly
* called
*/
static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode)
{
int iobase = data->address[LD_FAN];
data->pwm_enable[nr] &= ~PWM_ENABLE_MODE_MASK;
data->pwm_enable[nr] |= mode;
outb(data->pwm_enable[nr], iobase + PC87427_REG_PWM_ENABLE);
}
static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
int pwm_enable;
pwm_enable = pwm_enable_from_reg(data->pwm_enable[nr]);
if (pwm_enable < 0)
return pwm_enable;
return sprintf(buf, "%d\n", pwm_enable);
}
static ssize_t set_pwm_enable(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct pc87427_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0 || val > 2)
return -EINVAL;
/* Can't go to automatic mode if it isn't configured */
if (val == 2 && !(data->pwm_auto_ok & (1 << nr)))
return -EINVAL;
mutex_lock(&data->lock);
pc87427_readall_pwm(data, nr);
update_pwm_enable(data, nr, pwm_enable_to_reg(val, data->pwm[nr]));
mutex_unlock(&data->lock);
return count;
}
static ssize_t show_pwm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", (int)data->pwm[nr]);
}
static ssize_t set_pwm(struct device *dev, struct device_attribute
*devattr, const char *buf, size_t count)
{
struct pc87427_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(devattr)->index;
unsigned long val;
int iobase = data->address[LD_FAN];
u8 mode;
if (kstrtoul(buf, 10, &val) < 0 || val > 0xff)
return -EINVAL;
mutex_lock(&data->lock);
pc87427_readall_pwm(data, nr);
mode = data->pwm_enable[nr] & PWM_ENABLE_MODE_MASK;
if (mode != PWM_MODE_MANUAL && mode != PWM_MODE_OFF) {
dev_notice(dev, "Can't set PWM%d duty cycle while not in "
"manual mode\n", nr + 1);
mutex_unlock(&data->lock);
return -EPERM;
}
/* We may have to change the mode */
if (mode == PWM_MODE_MANUAL && val == 0) {
/* Transition from Manual to Off */
update_pwm_enable(data, nr, PWM_MODE_OFF);
mode = PWM_MODE_OFF;
dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1,
"manual", "off");
} else if (mode == PWM_MODE_OFF && val != 0) {
/* Transition from Off to Manual */
update_pwm_enable(data, nr, PWM_MODE_MANUAL);
mode = PWM_MODE_MANUAL;
dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1,
"off", "manual");
}
data->pwm[nr] = val;
if (mode == PWM_MODE_MANUAL)
outb(val, iobase + PC87427_REG_PWM_DUTY);
mutex_unlock(&data->lock);
return count;
}
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
show_pwm_enable, set_pwm_enable, 0);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
show_pwm_enable, set_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
show_pwm_enable, set_pwm_enable, 2);
static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO,
show_pwm_enable, set_pwm_enable, 3);
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3);
static struct attribute *pc87427_attributes_pwm[4][3] = {
{
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_pwm4_enable.dev_attr.attr,
&sensor_dev_attr_pwm4.dev_attr.attr,
NULL
}
};
static const struct attribute_group pc87427_group_pwm[4] = {
{ .attrs = pc87427_attributes_pwm[0] },
{ .attrs = pc87427_attributes_pwm[1] },
{ .attrs = pc87427_attributes_pwm[2] },
{ .attrs = pc87427_attributes_pwm[3] },
};
static ssize_t show_temp_input(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%ld\n", temp_from_reg(data->temp[nr]));
}
static ssize_t show_temp_min(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_min[nr]));
}
static ssize_t show_temp_max(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_max[nr]));
}
static ssize_t show_temp_crit(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%ld\n", temp_from_reg8(data->temp_crit[nr]));
}
static ssize_t show_temp_type(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%u\n", temp_type_from_reg(data->temp_type[nr]));
}
static ssize_t show_temp_min_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->temp_status[nr]
& TEMP_STATUS_LOWFLG));
}
static ssize_t show_temp_max_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->temp_status[nr]
& TEMP_STATUS_HIGHFLG));
}
static ssize_t show_temp_crit_alarm(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->temp_status[nr]
& TEMP_STATUS_CRITFLG));
}
static ssize_t show_temp_fault(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = pc87427_update_device(dev);
int nr = to_sensor_dev_attr(devattr)->index;
return sprintf(buf, "%d\n", !!(data->temp_status[nr]
& TEMP_STATUS_SENSERR));
}
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp_input, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp_input, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, show_temp_input, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, show_temp_input, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_min, S_IRUGO, show_temp_min, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_min, S_IRUGO, show_temp_min, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_min, S_IRUGO, show_temp_min, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO, show_temp_min, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_min, S_IRUGO, show_temp_min, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_min, S_IRUGO, show_temp_min, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, show_temp_max, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO, show_temp_max, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_max, S_IRUGO, show_temp_max, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO, show_temp_max, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_max, S_IRUGO, show_temp_max, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_max, S_IRUGO, show_temp_max, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO, show_temp_crit, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_crit, S_IRUGO, show_temp_crit, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_crit, S_IRUGO, show_temp_crit, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO, show_temp_type, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO, show_temp_type, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO, show_temp_type, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_type, S_IRUGO, show_temp_type, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_type, S_IRUGO, show_temp_type, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_type, S_IRUGO, show_temp_type, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_min_alarm, S_IRUGO,
show_temp_min_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_max_alarm, S_IRUGO,
show_temp_max_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_crit_alarm, S_IRUGO,
show_temp_crit_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_temp_fault, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_fault, S_IRUGO, show_temp_fault, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_fault, S_IRUGO, show_temp_fault, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_fault, S_IRUGO, show_temp_fault, NULL, 5);
static struct attribute *pc87427_attributes_temp[6][10] = {
{
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_type.dev_attr.attr,
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_crit.dev_attr.attr,
&sensor_dev_attr_temp2_type.dev_attr.attr,
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp3_crit.dev_attr.attr,
&sensor_dev_attr_temp3_type.dev_attr.attr,
&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_temp4_input.dev_attr.attr,
&sensor_dev_attr_temp4_min.dev_attr.attr,
&sensor_dev_attr_temp4_max.dev_attr.attr,
&sensor_dev_attr_temp4_crit.dev_attr.attr,
&sensor_dev_attr_temp4_type.dev_attr.attr,
&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp4_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_temp5_input.dev_attr.attr,
&sensor_dev_attr_temp5_min.dev_attr.attr,
&sensor_dev_attr_temp5_max.dev_attr.attr,
&sensor_dev_attr_temp5_crit.dev_attr.attr,
&sensor_dev_attr_temp5_type.dev_attr.attr,
&sensor_dev_attr_temp5_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp5_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp5_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp5_fault.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_temp6_input.dev_attr.attr,
&sensor_dev_attr_temp6_min.dev_attr.attr,
&sensor_dev_attr_temp6_max.dev_attr.attr,
&sensor_dev_attr_temp6_crit.dev_attr.attr,
&sensor_dev_attr_temp6_type.dev_attr.attr,
&sensor_dev_attr_temp6_min_alarm.dev_attr.attr,
&sensor_dev_attr_temp6_max_alarm.dev_attr.attr,
&sensor_dev_attr_temp6_crit_alarm.dev_attr.attr,
&sensor_dev_attr_temp6_fault.dev_attr.attr,
NULL
}
};
static const struct attribute_group pc87427_group_temp[6] = {
{ .attrs = pc87427_attributes_temp[0] },
{ .attrs = pc87427_attributes_temp[1] },
{ .attrs = pc87427_attributes_temp[2] },
{ .attrs = pc87427_attributes_temp[3] },
{ .attrs = pc87427_attributes_temp[4] },
{ .attrs = pc87427_attributes_temp[5] },
};
static ssize_t show_name(struct device *dev, struct device_attribute
*devattr, char *buf)
{
struct pc87427_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
/*
* Device detection, attach and detach
*/
static int pc87427_request_regions(struct platform_device *pdev,
int count)
{
struct resource *res;
int i;
for (i = 0; i < count; i++) {
res = platform_get_resource(pdev, IORESOURCE_IO, i);
if (!res) {
dev_err(&pdev->dev, "Missing resource #%d\n", i);
return -ENOENT;
}
if (!devm_request_region(&pdev->dev, res->start,
resource_size(res), DRVNAME)) {
dev_err(&pdev->dev,
"Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start,
(unsigned long)res->end);
return -EBUSY;
}
}
return 0;
}
static void pc87427_init_device(struct device *dev)
{
struct pc87427_sio_data *sio_data = dev->platform_data;
struct pc87427_data *data = dev_get_drvdata(dev);
int i;
u8 reg;
/* The FMC module should be ready */
reg = pc87427_read8(data, LD_FAN, PC87427_REG_BANK);
if (!(reg & 0x80))
dev_warn(dev, "%s module not ready!\n", "FMC");
/* Check which fans are enabled */
for (i = 0; i < 8; i++) {
if (!(sio_data->has_fanin & (1 << i))) /* Not wired */
continue;
reg = pc87427_read8_bank(data, LD_FAN, BANK_FM(i),
PC87427_REG_FAN_STATUS);
if (reg & FAN_STATUS_MONEN)
data->fan_enabled |= (1 << i);
}
if (!data->fan_enabled) {
dev_dbg(dev, "Enabling monitoring of all fans\n");
for (i = 0; i < 8; i++) {
if (!(sio_data->has_fanin & (1 << i))) /* Not wired */
continue;
pc87427_write8_bank(data, LD_FAN, BANK_FM(i),
PC87427_REG_FAN_STATUS,
FAN_STATUS_MONEN);
}
data->fan_enabled = sio_data->has_fanin;
}
/* Check which PWM outputs are enabled */
for (i = 0; i < 4; i++) {
if (!(sio_data->has_fanout & (1 << i))) /* Not wired */
continue;
reg = pc87427_read8_bank(data, LD_FAN, BANK_FC(i),
PC87427_REG_PWM_ENABLE);
if (reg & PWM_ENABLE_CTLEN)
data->pwm_enabled |= (1 << i);
/*
* We don't expose an interface to reconfigure the automatic
* fan control mode, so only allow to return to this mode if
* it was originally set.
*/
if ((reg & PWM_ENABLE_MODE_MASK) == PWM_MODE_AUTO) {
dev_dbg(dev, "PWM%d is in automatic control mode\n",
i + 1);
data->pwm_auto_ok |= (1 << i);
}
}
/* The HMC module should be ready */
reg = pc87427_read8(data, LD_TEMP, PC87427_REG_BANK);
if (!(reg & 0x80))
dev_warn(dev, "%s module not ready!\n", "HMC");
/* Check which temperature channels are enabled */
for (i = 0; i < 6; i++) {
reg = pc87427_read8_bank(data, LD_TEMP, BANK_TM(i),
PC87427_REG_TEMP_STATUS);
if (reg & TEMP_STATUS_CHANEN)
data->temp_enabled |= (1 << i);
}
}
static void pc87427_remove_files(struct device *dev)
{
struct pc87427_data *data = dev_get_drvdata(dev);
int i;
device_remove_file(dev, &dev_attr_name);
for (i = 0; i < 8; i++) {
if (!(data->fan_enabled & (1 << i)))
continue;
sysfs_remove_group(&dev->kobj, &pc87427_group_fan[i]);
}
for (i = 0; i < 4; i++) {
if (!(data->pwm_enabled & (1 << i)))
continue;
sysfs_remove_group(&dev->kobj, &pc87427_group_pwm[i]);
}
for (i = 0; i < 6; i++) {
if (!(data->temp_enabled & (1 << i)))
continue;
sysfs_remove_group(&dev->kobj, &pc87427_group_temp[i]);
}
}
static int pc87427_probe(struct platform_device *pdev)
{
struct pc87427_sio_data *sio_data = pdev->dev.platform_data;
struct pc87427_data *data;
int i, err, res_count;
data = devm_kzalloc(&pdev->dev, sizeof(struct pc87427_data),
GFP_KERNEL);
if (!data) {
pr_err("Out of memory\n");
return -ENOMEM;
}
data->address[0] = sio_data->address[0];
data->address[1] = sio_data->address[1];
res_count = (data->address[0] != 0) + (data->address[1] != 0);
err = pc87427_request_regions(pdev, res_count);
if (err)
return err;
mutex_init(&data->lock);
data->name = "pc87427";
platform_set_drvdata(pdev, data);
pc87427_init_device(&pdev->dev);
/* Register sysfs hooks */
err = device_create_file(&pdev->dev, &dev_attr_name);
if (err)
return err;
for (i = 0; i < 8; i++) {
if (!(data->fan_enabled & (1 << i)))
continue;
err = sysfs_create_group(&pdev->dev.kobj,
&pc87427_group_fan[i]);
if (err)
goto exit_remove_files;
}
for (i = 0; i < 4; i++) {
if (!(data->pwm_enabled & (1 << i)))
continue;
err = sysfs_create_group(&pdev->dev.kobj,
&pc87427_group_pwm[i]);
if (err)
goto exit_remove_files;
}
for (i = 0; i < 6; i++) {
if (!(data->temp_enabled & (1 << i)))
continue;
err = sysfs_create_group(&pdev->dev.kobj,
&pc87427_group_temp[i]);
if (err)
goto exit_remove_files;
}
data->hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
goto exit_remove_files;
}
return 0;
exit_remove_files:
pc87427_remove_files(&pdev->dev);
return err;
}
static int pc87427_remove(struct platform_device *pdev)
{
struct pc87427_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
pc87427_remove_files(&pdev->dev);
return 0;
}
static struct platform_driver pc87427_driver = {
.driver = {
.owner = THIS_MODULE,
.name = DRVNAME,
},
.probe = pc87427_probe,
.remove = pc87427_remove,
};
static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data)
{
struct resource res[2] = {
{ .flags = IORESOURCE_IO },
{ .flags = IORESOURCE_IO },
};
int err, i, res_count;
res_count = 0;
for (i = 0; i < 2; i++) {
if (!sio_data->address[i])
continue;
res[res_count].start = sio_data->address[i];
res[res_count].end = sio_data->address[i] + REGION_LENGTH - 1;
res[res_count].name = logdev_str[i];
err = acpi_check_resource_conflict(&res[res_count]);
if (err)
goto exit;
res_count++;
}
pdev = platform_device_alloc(DRVNAME, res[0].start);
if (!pdev) {
err = -ENOMEM;
pr_err("Device allocation failed\n");
goto exit;
}
err = platform_device_add_resources(pdev, res, res_count);
if (err) {
pr_err("Device resource addition failed (%d)\n", err);
goto exit_device_put;
}
err = platform_device_add_data(pdev, sio_data,
sizeof(struct pc87427_sio_data));
if (err) {
pr_err("Platform data allocation failed\n");
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
pr_err("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 pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data)
{
u16 val;
u8 cfg, cfg_b;
int i, err = 0;
/* Identify device */
val = force_id ? force_id : superio_inb(sioaddr, SIOREG_DEVID);
if (val != 0xf2) { /* PC87427 */
err = -ENODEV;
goto exit;
}
for (i = 0; i < 2; i++) {
sio_data->address[i] = 0;
/* Select logical device */
superio_outb(sioaddr, SIOREG_LDSEL, logdev[i]);
val = superio_inb(sioaddr, SIOREG_ACT);
if (!(val & 0x01)) {
pr_info("Logical device 0x%02x not activated\n",
logdev[i]);
continue;
}
val = superio_inb(sioaddr, SIOREG_MAP);
if (val & 0x01) {
pr_warn("Logical device 0x%02x is memory-mapped, "
"can't use\n", logdev[i]);
continue;
}
val = (superio_inb(sioaddr, SIOREG_IOBASE) << 8)
| superio_inb(sioaddr, SIOREG_IOBASE + 1);
if (!val) {
pr_info("I/O base address not set for logical device "
"0x%02x\n", logdev[i]);
continue;
}
sio_data->address[i] = val;
}
/* No point in loading the driver if everything is disabled */
if (!sio_data->address[0] && !sio_data->address[1]) {
err = -ENODEV;
goto exit;
}
/* Check which fan inputs are wired */
sio_data->has_fanin = (1 << 2) | (1 << 3); /* FANIN2, FANIN3 */
cfg = superio_inb(sioaddr, SIOREG_CF2);
if (!(cfg & (1 << 3)))
sio_data->has_fanin |= (1 << 0); /* FANIN0 */
if (!(cfg & (1 << 2)))
sio_data->has_fanin |= (1 << 4); /* FANIN4 */
cfg = superio_inb(sioaddr, SIOREG_CFD);
if (!(cfg & (1 << 0)))
sio_data->has_fanin |= (1 << 1); /* FANIN1 */
cfg = superio_inb(sioaddr, SIOREG_CF4);
if (!(cfg & (1 << 0)))
sio_data->has_fanin |= (1 << 7); /* FANIN7 */
cfg_b = superio_inb(sioaddr, SIOREG_CFB);
if (!(cfg & (1 << 1)) && (cfg_b & (1 << 3)))
sio_data->has_fanin |= (1 << 5); /* FANIN5 */
cfg = superio_inb(sioaddr, SIOREG_CF3);
if ((cfg & (1 << 3)) && !(cfg_b & (1 << 5)))
sio_data->has_fanin |= (1 << 6); /* FANIN6 */
/* Check which fan outputs are wired */
sio_data->has_fanout = (1 << 0); /* FANOUT0 */
if (cfg_b & (1 << 0))
sio_data->has_fanout |= (1 << 3); /* FANOUT3 */
cfg = superio_inb(sioaddr, SIOREG_CFC);
if (!(cfg & (1 << 4))) {
if (cfg_b & (1 << 1))
sio_data->has_fanout |= (1 << 1); /* FANOUT1 */
if (cfg_b & (1 << 2))
sio_data->has_fanout |= (1 << 2); /* FANOUT2 */
}
/* FANOUT1 and FANOUT2 can each be routed to 2 different pins */
cfg = superio_inb(sioaddr, SIOREG_CF5);
if (cfg & (1 << 6))
sio_data->has_fanout |= (1 << 1); /* FANOUT1 */
if (cfg & (1 << 5))
sio_data->has_fanout |= (1 << 2); /* FANOUT2 */
exit:
superio_exit(sioaddr);
return err;
}
static int __init pc87427_init(void)
{
int err;
struct pc87427_sio_data sio_data;
if (pc87427_find(0x2e, &sio_data)
&& pc87427_find(0x4e, &sio_data))
return -ENODEV;
err = platform_driver_register(&pc87427_driver);
if (err)
goto exit;
/* Sets global pdev as a side effect */
err = pc87427_device_add(&sio_data);
if (err)
goto exit_driver;
return 0;
exit_driver:
platform_driver_unregister(&pc87427_driver);
exit:
return err;
}
static void __exit pc87427_exit(void)
{
platform_device_unregister(pdev);
platform_driver_unregister(&pc87427_driver);
}
MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("PC87427 hardware monitoring driver");
MODULE_LICENSE("GPL");
module_init(pc87427_init);
module_exit(pc87427_exit);
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