it87.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring.
+ The IT8705F is an LPC-based Super I/O part that contains UARTs, a
+ parallel port, an IR port, a MIDI port, a floppy controller, etc., in
+ addition to an Environment Controller (Enhanced Hardware Monitor and
+ Fan Controller)
+
+ This driver supports only the Environment Controller in the IT8705F and
+ similar parts. The other devices are supported by different drivers.
+
Supports: IT8705F Super I/O chip w/LPC interface
IT8712F Super I/O chip w/LPC interface
IT8716F Super I/O chip w/LPC interface
IT8726F Super I/O chip w/LPC interface
Sis950 A clone of the IT8705F
- Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com>
- Copyright (C) 2005-2006 Jean Delvare <khali@linux-fr.org>
+ Copyright (C) 2001 Chris Gauthron
+ Copyright (C) 2005-2007 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 as published by
enum chips { it87, it8712, it8716, it8718 };
+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 REG 0x2e /* The register to read/write */
/* Length of ISA address segment */
#define IT87_EXTENT 8
-/* Where are the ISA address/data registers relative to the base address */
-#define IT87_ADDR_REG_OFFSET 5
-#define IT87_DATA_REG_OFFSET 6
+/* Length of ISA address segment for Environmental Controller */
+#define IT87_EC_EXTENT 2
+
+/* Offset of EC registers from ISA base address */
+#define IT87_EC_OFFSET 5
+
+/* Where are the ISA address/data registers relative to the EC base address */
+#define IT87_ADDR_REG_OFFSET 0
+#define IT87_DATA_REG_OFFSET 1
/*----- The IT87 registers -----*/
/* The IT8718F has the VID value in a different register, in Super-I/O
configuration space. */
#define IT87_REG_VID 0x0a
-/* Warning: register 0x0b is used for something completely different in
- new chips/revisions. I suspect only 16-bit tachometer mode will work
- for these. */
+/* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b
+ for fan divisors. Later IT8712F revisions must use 16-bit tachometer
+ mode. */
#define IT87_REG_FAN_DIV 0x0b
#define IT87_REG_FAN_16BIT 0x0c
/* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */
-#define IT87_REG_FAN(nr) (0x0d + (nr))
-#define IT87_REG_FAN_MIN(nr) (0x10 + (nr))
-#define IT87_REG_FANX(nr) (0x18 + (nr))
-#define IT87_REG_FANX_MIN(nr) (0x1b + (nr))
+static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
+static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 };
+static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 };
+static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
#define IT87_REG_FAN_MAIN_CTRL 0x13
#define IT87_REG_FAN_CTL 0x14
#define IT87_REG_PWM(nr) (0x15 + (nr))
struct it87_sio_data {
enum chips type;
/* Values read from Super-I/O config space */
+ u8 revision;
u8 vid_value;
};
/* For each registered chip, we need to keep some data in memory.
The structure is dynamically allocated. */
struct it87_data {
- struct class_device *class_dev;
+ struct device *hwmon_dev;
enum chips type;
+ u8 revision;
unsigned short addr;
const char *name;
u8 in_max[8]; /* Register value */
u8 in_min[8]; /* Register value */
u8 has_fan; /* Bitfield, fans enabled */
- u16 fan[3]; /* Register values, possibly combined */
- u16 fan_min[3]; /* Register values, possibly combined */
+ u16 fan[5]; /* Register values, possibly combined */
+ u16 fan_min[5]; /* Register values, possibly combined */
u8 temp[3]; /* Register value */
u8 temp_high[3]; /* Register value */
u8 temp_low[3]; /* Register value */
u8 manual_pwm_ctl[3]; /* manual PWM value set by user */
};
+static inline int has_16bit_fans(const struct it87_data *data)
+{
+ /* IT8705F Datasheet 0.4.1, 3h == Version G.
+ IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J.
+ These are the first revisions with 16bit tachometer support. */
+ return (data->type == it87 && data->revision >= 0x03)
+ || (data->type == it8712 && data->revision >= 0x08)
+ || data->type == it8716
+ || data->type == it8718;
+}
static int it87_probe(struct platform_device *pdev);
-static int it87_remove(struct platform_device *pdev);
+static int __devexit it87_remove(struct platform_device *pdev);
static int it87_read_value(struct it87_data *data, u8 reg);
static void it87_write_value(struct it87_data *data, u8 reg, u8 value);
}
data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
- it87_write_value(data, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
+ it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
}
/* Restore fan min limit */
data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
- it87_write_value(data, IT87_REG_FAN_MIN(nr), data->fan_min[nr]);
+ it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]);
mutex_unlock(&data->update_lock);
return count;
mutex_lock(&data->update_lock);
data->fan_min[nr] = FAN16_TO_REG(val);
- it87_write_value(data, IT87_REG_FAN_MIN(nr),
+ it87_write_value(data, IT87_REG_FAN_MIN[nr],
data->fan_min[nr] & 0xff);
- it87_write_value(data, IT87_REG_FANX_MIN(nr),
+ it87_write_value(data, IT87_REG_FANX_MIN[nr],
data->fan_min[nr] >> 8);
mutex_unlock(&data->update_lock);
return count;
show_fan16_offset(1);
show_fan16_offset(2);
show_fan16_offset(3);
+show_fan16_offset(4);
+show_fan16_offset(5);
/* Alarms */
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
}
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int bitnr = to_sensor_dev_attr(attr)->index;
+ struct it87_data *data = it87_update_device(dev);
+ return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
+}
+static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8);
+static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9);
+static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10);
+static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11);
+static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12);
+static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13);
+static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14);
+static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15);
+static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18);
+
static ssize_t
show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf)
{
- struct it87_data *data = it87_update_device(dev);
+ struct it87_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", data->vrm);
}
static ssize_t
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
+ &sensor_dev_attr_in0_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+ &sensor_dev_attr_in3_alarm.dev_attr.attr,
+ &sensor_dev_attr_in4_alarm.dev_attr.attr,
+ &sensor_dev_attr_in5_alarm.dev_attr.attr,
+ &sensor_dev_attr_in6_alarm.dev_attr.attr,
+ &sensor_dev_attr_in7_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp1_type.dev_attr.attr,
&sensor_dev_attr_temp2_type.dev_attr.attr,
&sensor_dev_attr_temp3_type.dev_attr.attr,
+ &sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp3_alarm.dev_attr.attr,
&dev_attr_alarms.attr,
&dev_attr_name.attr,
&sensor_dev_attr_fan2_min16.dev_attr.attr,
&sensor_dev_attr_fan3_input16.dev_attr.attr,
&sensor_dev_attr_fan3_min16.dev_attr.attr,
+ &sensor_dev_attr_fan4_input16.dev_attr.attr,
+ &sensor_dev_attr_fan4_min16.dev_attr.attr,
+ &sensor_dev_attr_fan5_input16.dev_attr.attr,
+ &sensor_dev_attr_fan5_min16.dev_attr.attr,
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan1_min.dev_attr.attr,
&sensor_dev_attr_fan3_min.dev_attr.attr,
&sensor_dev_attr_fan3_div.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan3_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan4_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan5_alarm.dev_attr.attr,
+
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
+ &dev_attr_pwm1_freq.attr,
+ &dev_attr_pwm2_freq.attr,
+ &dev_attr_pwm3_freq.attr,
&dev_attr_vrm.attr,
&dev_attr_cpu0_vid.attr,
u16 chip_type;
superio_enter();
- chip_type = superio_inw(DEVID);
+ chip_type = force_id ? force_id : superio_inw(DEVID);
switch (chip_type) {
case IT8705F_DEVID:
}
err = 0;
+ sio_data->revision = superio_inb(DEVREV) & 0x0f;
pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
- chip_type, *address, superio_inb(DEVREV) & 0x0f);
+ chip_type, *address, sio_data->revision);
/* Read GPIO config and VID value from LDN 7 (GPIO) */
if (chip_type != IT8705F_DEVID) {
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (!request_region(res->start, IT87_EXTENT, DRVNAME)) {
+ if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start,
- (unsigned long)(res->start + IT87_EXTENT - 1));
+ (unsigned long)(res->start + IT87_EC_EXTENT - 1));
err = -EBUSY;
goto ERROR0;
}
data->addr = res->start;
data->type = sio_data->type;
+ data->revision = sio_data->revision;
data->name = names[sio_data->type];
/* Now, we do the remaining detection. */
goto ERROR2;
/* Do not create fan files for disabled fans */
- if (data->type == it8716 || data->type == it8718) {
+ if (has_16bit_fans(data)) {
/* 16-bit tachometers */
if (data->has_fan & (1 << 0)) {
if ((err = device_create_file(dev,
&sensor_dev_attr_fan1_input16.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan1_min16.dev_attr)))
+ &sensor_dev_attr_fan1_min16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan1_alarm.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 1)) {
if ((err = device_create_file(dev,
&sensor_dev_attr_fan2_input16.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan2_min16.dev_attr)))
+ &sensor_dev_attr_fan2_min16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan2_alarm.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 2)) {
if ((err = device_create_file(dev,
&sensor_dev_attr_fan3_input16.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan3_min16.dev_attr)))
+ &sensor_dev_attr_fan3_min16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan3_alarm.dev_attr)))
+ goto ERROR4;
+ }
+ if (data->has_fan & (1 << 3)) {
+ if ((err = device_create_file(dev,
+ &sensor_dev_attr_fan4_input16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan4_min16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan4_alarm.dev_attr)))
+ goto ERROR4;
+ }
+ if (data->has_fan & (1 << 4)) {
+ if ((err = device_create_file(dev,
+ &sensor_dev_attr_fan5_input16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan5_min16.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan5_alarm.dev_attr)))
goto ERROR4;
}
} else {
|| (err = device_create_file(dev,
&sensor_dev_attr_fan1_min.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan1_div.dev_attr)))
+ &sensor_dev_attr_fan1_div.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan1_alarm.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 1)) {
|| (err = device_create_file(dev,
&sensor_dev_attr_fan2_min.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan2_div.dev_attr)))
+ &sensor_dev_attr_fan2_div.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan2_alarm.dev_attr)))
goto ERROR4;
}
if (data->has_fan & (1 << 2)) {
|| (err = device_create_file(dev,
&sensor_dev_attr_fan3_min.dev_attr))
|| (err = device_create_file(dev,
- &sensor_dev_attr_fan3_div.dev_attr)))
+ &sensor_dev_attr_fan3_div.dev_attr))
+ || (err = device_create_file(dev,
+ &sensor_dev_attr_fan3_alarm.dev_attr)))
goto ERROR4;
}
}
goto ERROR4;
}
- data->class_dev = hwmon_device_register(dev);
- if (IS_ERR(data->class_dev)) {
- err = PTR_ERR(data->class_dev);
+ data->hwmon_dev = hwmon_device_register(dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
goto ERROR4;
}
platform_set_drvdata(pdev, NULL);
kfree(data);
ERROR1:
- release_region(res->start, IT87_EXTENT);
+ release_region(res->start, IT87_EC_EXTENT);
ERROR0:
return err;
}
{
struct it87_data *data = platform_get_drvdata(pdev);
- hwmon_device_unregister(data->class_dev);
+ hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&pdev->dev.kobj, &it87_group);
sysfs_remove_group(&pdev->dev.kobj, &it87_group_opt);
- release_region(data->addr, IT87_EXTENT);
+ release_region(data->addr, IT87_EC_EXTENT);
platform_set_drvdata(pdev, NULL);
kfree(data);
data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
/* Set tachometers to 16-bit mode if needed */
- if (data->type == it8716 || data->type == it8718) {
+ if (has_16bit_fans(data)) {
tmp = it87_read_value(data, IT87_REG_FAN_16BIT);
if (~tmp & 0x07 & data->has_fan) {
dev_dbg(&pdev->dev,
it87_write_value(data, IT87_REG_FAN_16BIT,
tmp | 0x07);
}
+ /* IT8705F only supports three fans. */
+ if (data->type != it87) {
+ if (tmp & (1 << 4))
+ data->has_fan |= (1 << 3); /* fan4 enabled */
+ if (tmp & (1 << 5))
+ data->has_fan |= (1 << 4); /* fan5 enabled */
+ }
}
/* Set current fan mode registers and the default settings for the
data->in[8] =
it87_read_value(data, IT87_REG_VIN(8));
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < 5; i++) {
/* Skip disabled fans */
if (!(data->has_fan & (1 << i)))
continue;
data->fan_min[i] =
- it87_read_value(data, IT87_REG_FAN_MIN(i));
+ it87_read_value(data, IT87_REG_FAN_MIN[i]);
data->fan[i] = it87_read_value(data,
- IT87_REG_FAN(i));
+ IT87_REG_FAN[i]);
/* Add high byte if in 16-bit mode */
- if (data->type == it8716 || data->type == it8718) {
+ if (has_16bit_fans(data)) {
data->fan[i] |= it87_read_value(data,
- IT87_REG_FANX(i)) << 8;
+ IT87_REG_FANX[i]) << 8;
data->fan_min[i] |= it87_read_value(data,
- IT87_REG_FANX_MIN(i)) << 8;
+ IT87_REG_FANX_MIN[i]) << 8;
}
}
for (i = 0; i < 3; i++) {
}
/* Newer chips don't have clock dividers */
- if ((data->has_fan & 0x07) && data->type != it8716
- && data->type != it8718) {
+ if ((data->has_fan & 0x07) && !has_16bit_fans(data)) {
i = it87_read_value(data, IT87_REG_FAN_DIV);
data->fan_div[0] = i & 0x07;
data->fan_div[1] = (i >> 3) & 0x07;
data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL);
data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
- /* The 8705 does not have VID capability */
+ /* The 8705 does not have VID capability.
+ The 8718 does not use IT87_REG_VID for the same purpose. */
if (data->type == it8712 || data->type == it8716) {
data->vid = it87_read_value(data, IT87_REG_VID);
/* The older IT8712F revisions had only 5 VID pins,
const struct it87_sio_data *sio_data)
{
struct resource res = {
- .start = address ,
- .end = address + IT87_EXTENT - 1,
+ .start = address + IT87_EC_OFFSET,
+ .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1,
.name = DRVNAME,
.flags = IORESOURCE_IO,
};
}
-MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>, "
+MODULE_AUTHOR("Chris Gauthron, "
"Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8726F, SiS950 driver");
module_param(update_vbat, bool, 0);
git.openpandora.org / pandora-kernel.git / blobdiff