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path: root/drivers/hwmon/dme1737.c
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Diffstat (limited to 'drivers/hwmon/dme1737.c')
-rw-r--r--drivers/hwmon/dme1737.c954
1 files changed, 641 insertions, 313 deletions
diff --git a/drivers/hwmon/dme1737.c b/drivers/hwmon/dme1737.c
index e9cbc727664d..a878c98e252e 100644
--- a/drivers/hwmon/dme1737.c
+++ b/drivers/hwmon/dme1737.c
@@ -1,12 +1,12 @@
/*
- * dme1737.c - driver for the SMSC DME1737 and Asus A8000 Super-I/O chips
- * integrated hardware monitoring features.
+ * dme1737.c - Driver for the SMSC DME1737, Asus A8000, and SMSC SCH311x
+ * Super-I/O chips integrated hardware monitoring features.
* Copyright (c) 2007 Juerg Haefliger <juergh@gmail.com>
*
- * This driver is based on the LM85 driver. The hardware monitoring
- * capabilities of the DME1737 are very similar to the LM85 with some
- * additional features. Even though the DME1737 is a Super-I/O chip, the
- * hardware monitoring registers are only accessible via SMBus.
+ * This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
+ * the chip registers if a DME1737 (or A8000) is found and the ISA bus if a
+ * SCH311x chip is found. Both types of chips have very similar hardware
+ * monitoring capabilities but differ in the way they can be accessed.
*
* 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
@@ -28,6 +28,7 @@
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
+#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
@@ -35,6 +36,9 @@
#include <linux/mutex.h>
#include <asm/io.h>
+/* ISA device, if found */
+static struct platform_device *pdev;
+
/* Module load parameters */
static int force_start;
module_param(force_start, bool, 0);
@@ -133,6 +137,7 @@ static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
/* Miscellaneous registers */
+#define DME1737_REG_DEVICE 0x3d
#define DME1737_REG_COMPANY 0x3e
#define DME1737_REG_VERSTEP 0x3f
#define DME1737_REG_CONFIG 0x40
@@ -148,14 +153,20 @@ static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
#define DME1737_COMPANY_SMSC 0x5c
#define DME1737_VERSTEP 0x88
#define DME1737_VERSTEP_MASK 0xf8
+#define SCH311X_DEVICE 0x8c
+
+/* Length of ISA address segment */
+#define DME1737_EXTENT 2
/* ---------------------------------------------------------------------
* Data structures and manipulation thereof
* --------------------------------------------------------------------- */
+/* For ISA chips, we abuse the i2c_client addr and name fields. We also use
+ the driver field to differentiate between I2C and ISA chips. */
struct dme1737_data {
struct i2c_client client;
- struct class_device *class_dev;
+ struct device *hwmon_dev;
struct mutex update_lock;
int valid; /* !=0 if following fields are valid */
@@ -465,27 +476,48 @@ static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
/* ---------------------------------------------------------------------
* Device I/O access
+ *
+ * ISA access is performed through an index/data register pair and needs to
+ * be protected by a mutex during runtime (not required for initialization).
+ * We use data->update_lock for this and need to ensure that we acquire it
+ * before calling dme1737_read or dme1737_write.
* --------------------------------------------------------------------- */
static u8 dme1737_read(struct i2c_client *client, u8 reg)
{
- s32 val = i2c_smbus_read_byte_data(client, reg);
+ s32 val;
+
+ if (client->driver) { /* I2C device */
+ val = i2c_smbus_read_byte_data(client, reg);
- if (val < 0) {
- dev_warn(&client->dev, "Read from register 0x%02x failed! "
- "Please report to the driver maintainer.\n", reg);
+ if (val < 0) {
+ dev_warn(&client->dev, "Read from register "
+ "0x%02x failed! Please report to the driver "
+ "maintainer.\n", reg);
+ }
+ } else { /* ISA device */
+ outb(reg, client->addr);
+ val = inb(client->addr + 1);
}
return val;
}
-static s32 dme1737_write(struct i2c_client *client, u8 reg, u8 value)
+static s32 dme1737_write(struct i2c_client *client, u8 reg, u8 val)
{
- s32 res = i2c_smbus_write_byte_data(client, reg, value);
+ s32 res = 0;
+
+ if (client->driver) { /* I2C device */
+ res = i2c_smbus_write_byte_data(client, reg, val);
- if (res < 0) {
- dev_warn(&client->dev, "Write to register 0x%02x failed! "
- "Please report to the driver maintainer.\n", reg);
+ if (res < 0) {
+ dev_warn(&client->dev, "Write to register "
+ "0x%02x failed! Please report to the driver "
+ "maintainer.\n", reg);
+ }
+ } else { /* ISA device */
+ outb(reg, client->addr);
+ outb(val, client->addr + 1);
}
return res;
@@ -493,8 +525,8 @@ static s32 dme1737_write(struct i2c_client *client, u8 reg, u8 value)
static struct dme1737_data *dme1737_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
int ix;
u8 lsb[5];
@@ -630,6 +662,24 @@ static struct dme1737_data *dme1737_update_device(struct device *dev)
DME1737_REG_ALARM3) << 16;
}
+ /* The ISA chips require explicit clearing of alarm bits.
+ * Don't worry, an alarm will come back if the condition
+ * that causes it still exists */
+ if (!client->driver) {
+ if (data->alarms & 0xff0000) {
+ dme1737_write(client, DME1737_REG_ALARM3,
+ 0xff);
+ }
+ if (data->alarms & 0xff00) {
+ dme1737_write(client, DME1737_REG_ALARM2,
+ 0xff);
+ }
+ if (data->alarms & 0xff) {
+ dme1737_write(client, DME1737_REG_ALARM1,
+ 0xff);
+ }
+ }
+
data->last_update = jiffies;
data->valid = 1;
}
@@ -674,7 +724,7 @@ static ssize_t show_in(struct device *dev, struct device_attribute *attr,
break;
default:
res = 0;
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
@@ -683,8 +733,8 @@ static ssize_t show_in(struct device *dev, struct device_attribute *attr,
static ssize_t set_in(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
@@ -704,7 +754,7 @@ static ssize_t set_in(struct device *dev, struct device_attribute *attr,
data->in_max[ix]);
break;
default:
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
@@ -754,7 +804,7 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
break;
default:
res = 0;
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
@@ -763,8 +813,8 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
@@ -789,7 +839,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
data->temp_offset[ix]);
break;
default:
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
@@ -843,7 +893,7 @@ static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
break;
default:
res = 0;
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
@@ -852,8 +902,8 @@ static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
@@ -898,7 +948,7 @@ static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
data->zone_abs[ix]);
break;
default:
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
@@ -950,7 +1000,7 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
break;
default:
res = 0;
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
@@ -959,8 +1009,8 @@ static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
@@ -995,7 +1045,7 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
/* Only valid for fan[1-4] */
if (!(val == 1 || val == 2 || val == 4)) {
count = -EINVAL;
- dev_warn(&client->dev, "Fan type value %ld not "
+ dev_warn(dev, "Fan type value %ld not "
"supported. Choose one of 1, 2, or 4.\n",
val);
goto exit;
@@ -1006,7 +1056,7 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
data->fan_opt[ix]);
break;
default:
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
exit:
mutex_unlock(&data->update_lock);
@@ -1086,20 +1136,20 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
break;
default:
res = 0;
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static struct attribute *dme1737_attr_pwm[];
-static void dme1737_chmod_file(struct i2c_client*, struct attribute*, mode_t);
+static void dme1737_chmod_file(struct device*, struct attribute*, mode_t);
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
@@ -1122,7 +1172,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
/* Only valid for pwm[1-3] */
if (val < 0 || val > 2) {
count = -EINVAL;
- dev_warn(&client->dev, "PWM enable %ld not "
+ dev_warn(dev, "PWM enable %ld not "
"supported. Choose one of 0, 1, or 2.\n",
val);
goto exit;
@@ -1156,7 +1206,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
switch (val) {
case 0:
/* Change permissions of pwm[ix] to read-only */
- dme1737_chmod_file(client, dme1737_attr_pwm[ix],
+ dme1737_chmod_file(dev, dme1737_attr_pwm[ix],
S_IRUGO);
/* Turn fan fully on */
data->pwm_config[ix] = PWM_EN_TO_REG(0,
@@ -1171,12 +1221,12 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
dme1737_write(client, DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
/* Change permissions of pwm[ix] to read-writeable */
- dme1737_chmod_file(client, dme1737_attr_pwm[ix],
+ dme1737_chmod_file(dev, dme1737_attr_pwm[ix],
S_IRUGO | S_IWUSR);
break;
case 2:
/* Change permissions of pwm[ix] to read-only */
- dme1737_chmod_file(client, dme1737_attr_pwm[ix],
+ dme1737_chmod_file(dev, dme1737_attr_pwm[ix],
S_IRUGO);
/* Turn on auto mode using the saved zone channel
* assignment */
@@ -1223,7 +1273,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
if (!(val == 1 || val == 2 || val == 4 ||
val == 6 || val == 7)) {
count = -EINVAL;
- dev_warn(&client->dev, "PWM auto channels zone %ld "
+ dev_warn(dev, "PWM auto channels zone %ld "
"not supported. Choose one of 1, 2, 4, 6, "
"or 7.\n", val);
goto exit;
@@ -1257,12 +1307,10 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
dme1737_read(client,
DME1737_REG_PWM_RR(0)));
-
} else {
data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
dme1737_read(client,
DME1737_REG_PWM_RR(0)));
-
}
dme1737_write(client, DME1737_REG_PWM_RR(0),
data->pwm_rr[0]);
@@ -1274,7 +1322,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
data->pwm_min[ix]);
break;
default:
- dev_dbg(dev, "Unknown attr fetch (%d)\n", fn);
+ dev_dbg(dev, "Unknown function %d.\n", fn);
}
exit:
mutex_unlock(&data->update_lock);
@@ -1298,8 +1346,7 @@ static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
long val = simple_strtol(buf, NULL, 10);
data->vrm = val;
@@ -1314,6 +1361,14 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}
+static ssize_t show_name(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dme1737_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%s\n", data->client.name);
+}
+
/* ---------------------------------------------------------------------
* Sysfs device attribute defines and structs
* --------------------------------------------------------------------- */
@@ -1322,13 +1377,13 @@ static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
#define SENSOR_DEVICE_ATTR_IN(ix) \
static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
- show_in, NULL, SYS_IN_INPUT, ix); \
+ show_in, NULL, SYS_IN_INPUT, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
- show_in, set_in, SYS_IN_MIN, ix); \
+ show_in, set_in, SYS_IN_MIN, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
- show_in, set_in, SYS_IN_MAX, ix); \
+ show_in, set_in, SYS_IN_MAX, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
- show_in, NULL, SYS_IN_ALARM, ix)
+ show_in, NULL, SYS_IN_ALARM, ix)
SENSOR_DEVICE_ATTR_IN(0);
SENSOR_DEVICE_ATTR_IN(1);
@@ -1342,17 +1397,17 @@ SENSOR_DEVICE_ATTR_IN(6);
#define SENSOR_DEVICE_ATTR_TEMP(ix) \
static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
- show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
+ show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
- show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
+ show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
- show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
+ show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
- show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
+ show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
- show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
+ show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
- show_temp, NULL, SYS_TEMP_FAULT, ix-1)
+ show_temp, NULL, SYS_TEMP_FAULT, ix-1)
SENSOR_DEVICE_ATTR_TEMP(1);
SENSOR_DEVICE_ATTR_TEMP(2);
@@ -1362,15 +1417,15 @@ SENSOR_DEVICE_ATTR_TEMP(3);
#define SENSOR_DEVICE_ATTR_ZONE(ix) \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
- show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
+ show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
- show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
+ show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
- show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
+ show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
- show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
+ show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
- show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
+ show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
SENSOR_DEVICE_ATTR_ZONE(1);
SENSOR_DEVICE_ATTR_ZONE(2);
@@ -1380,13 +1435,13 @@ SENSOR_DEVICE_ATTR_ZONE(3);
#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
- show_fan, NULL, SYS_FAN_INPUT, ix-1); \
+ show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
- show_fan, set_fan, SYS_FAN_MIN, ix-1); \
+ show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
- show_fan, NULL, SYS_FAN_ALARM, ix-1); \
+ show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
- show_fan, set_fan, SYS_FAN_TYPE, ix-1)
+ show_fan, set_fan, SYS_FAN_TYPE, ix-1)
SENSOR_DEVICE_ATTR_FAN_1TO4(1);
SENSOR_DEVICE_ATTR_FAN_1TO4(2);
@@ -1397,13 +1452,13 @@ SENSOR_DEVICE_ATTR_FAN_1TO4(4);
#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
- show_fan, NULL, SYS_FAN_INPUT, ix-1); \
+ show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
- show_fan, set_fan, SYS_FAN_MIN, ix-1); \
+ show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
- show_fan, NULL, SYS_FAN_ALARM, ix-1); \
+ show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
- show_fan, set_fan, SYS_FAN_MAX, ix-1)
+ show_fan, set_fan, SYS_FAN_MAX, ix-1)
SENSOR_DEVICE_ATTR_FAN_5TO6(5);
SENSOR_DEVICE_ATTR_FAN_5TO6(6);
@@ -1412,21 +1467,21 @@ SENSOR_DEVICE_ATTR_FAN_5TO6(6);
#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM, ix-1); \
+ show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
- show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
- show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
+ show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
SENSOR_DEVICE_ATTR_PWM_1TO3(1);
SENSOR_DEVICE_ATTR_PWM_1TO3(2);
@@ -1436,11 +1491,11 @@ SENSOR_DEVICE_ATTR_PWM_1TO3(3);
#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO | S_IWUSR, \
- show_pwm, set_pwm, SYS_PWM, ix-1); \
+ show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO | S_IWUSR, \
- show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
+ show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
- show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
+ show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
SENSOR_DEVICE_ATTR_PWM_5TO6(5);
SENSOR_DEVICE_ATTR_PWM_5TO6(6);
@@ -1449,6 +1504,7 @@ SENSOR_DEVICE_ATTR_PWM_5TO6(6);
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
+static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
#define SENSOR_DEV_ATTR_IN(ix) \
&sensor_dev_attr_in##ix##_input.dev_attr.attr, \
@@ -1519,53 +1575,53 @@ SENSOR_DEV_ATTR_PWM_5TO6_LOCK(ix), \
* permissions are created read-only and write permissions are added or removed
* on the fly when required */
static struct attribute *dme1737_attr[] ={
- /* Voltages */
- SENSOR_DEV_ATTR_IN(0),
- SENSOR_DEV_ATTR_IN(1),
- SENSOR_DEV_ATTR_IN(2),
- SENSOR_DEV_ATTR_IN(3),
- SENSOR_DEV_ATTR_IN(4),
- SENSOR_DEV_ATTR_IN(5),
- SENSOR_DEV_ATTR_IN(6),
- /* Temperatures */
- SENSOR_DEV_ATTR_TEMP(1),
- SENSOR_DEV_ATTR_TEMP(2),
- SENSOR_DEV_ATTR_TEMP(3),
- /* Zones */
- SENSOR_DEV_ATTR_ZONE(1),
- SENSOR_DEV_ATTR_ZONE(2),
- SENSOR_DEV_ATTR_ZONE(3),
- /* Misc */
- &dev_attr_vrm.attr,
- &dev_attr_cpu0_vid.attr,
+ /* Voltages */
+ SENSOR_DEV_ATTR_IN(0),
+ SENSOR_DEV_ATTR_IN(1),
+ SENSOR_DEV_ATTR_IN(2),
+ SENSOR_DEV_ATTR_IN(3),
+ SENSOR_DEV_ATTR_IN(4),
+ SENSOR_DEV_ATTR_IN(5),
+ SENSOR_DEV_ATTR_IN(6),
+ /* Temperatures */
+ SENSOR_DEV_ATTR_TEMP(1),
+ SENSOR_DEV_ATTR_TEMP(2),
+ SENSOR_DEV_ATTR_TEMP(3),
+ /* Zones */
+ SENSOR_DEV_ATTR_ZONE(1),
+ SENSOR_DEV_ATTR_ZONE(2),
+ SENSOR_DEV_ATTR_ZONE(3),
+ /* Misc */
+ &dev_attr_vrm.attr,
+ &dev_attr_cpu0_vid.attr,
NULL
};
static const struct attribute_group dme1737_group = {
- .attrs = dme1737_attr,
+ .attrs = dme1737_attr,
};
/* The following structs hold the PWM attributes, some of which are optional.
* Their creation depends on the chip configuration which is determined during
* module load. */
static struct attribute *dme1737_attr_pwm1[] = {
- SENSOR_DEV_ATTR_PWM_1TO3(1),
+ SENSOR_DEV_ATTR_PWM_1TO3(1),
NULL
};
static struct attribute *dme1737_attr_pwm2[] = {
- SENSOR_DEV_ATTR_PWM_1TO3(2),
+ SENSOR_DEV_ATTR_PWM_1TO3(2),
NULL
};
static struct attribute *dme1737_attr_pwm3[] = {
- SENSOR_DEV_ATTR_PWM_1TO3(3),
+ SENSOR_DEV_ATTR_PWM_1TO3(3),
NULL
};
static struct attribute *dme1737_attr_pwm5[] = {
- SENSOR_DEV_ATTR_PWM_5TO6(5),
+ SENSOR_DEV_ATTR_PWM_5TO6(5),
NULL
};
static struct attribute *dme1737_attr_pwm6[] = {
- SENSOR_DEV_ATTR_PWM_5TO6(6),
+ SENSOR_DEV_ATTR_PWM_5TO6(6),
NULL
};
@@ -1582,27 +1638,27 @@ static const struct attribute_group dme1737_pwm_group[] = {
* Their creation depends on the chip configuration which is determined during
* module load. */
static struct attribute *dme1737_attr_fan1[] = {
- SENSOR_DEV_ATTR_FAN_1TO4(1),
+ SENSOR_DEV_ATTR_FAN_1TO4(1),
NULL
};
static struct attribute *dme1737_attr_fan2[] = {
- SENSOR_DEV_ATTR_FAN_1TO4(2),
+ SENSOR_DEV_ATTR_FAN_1TO4(2),
NULL
};
static struct attribute *dme1737_attr_fan3[] = {
- SENSOR_DEV_ATTR_FAN_1TO4(3),
+ SENSOR_DEV_ATTR_FAN_1TO4(3),
NULL
};
static struct attribute *dme1737_attr_fan4[] = {
- SENSOR_DEV_ATTR_FAN_1TO4(4),
+ SENSOR_DEV_ATTR_FAN_1TO4(4),
NULL
};
static struct attribute *dme1737_attr_fan5[] = {
- SENSOR_DEV_ATTR_FAN_5TO6(5),
+ SENSOR_DEV_ATTR_FAN_5TO6(5),
NULL
};
static struct attribute *dme1737_attr_fan6[] = {
- SENSOR_DEV_ATTR_FAN_5TO6(6),
+ SENSOR_DEV_ATTR_FAN_5TO6(6),
NULL
};
@@ -1637,23 +1693,23 @@ static const struct attribute_group dme1737_lock_group = {
* writeable if the chip is *not* locked and the respective PWM is available.
* Otherwise they stay read-only. */
static struct attribute *dme1737_attr_pwm1_lock[] = {
- SENSOR_DEV_ATTR_PWM_1TO3_LOCK(1),
+ SENSOR_DEV_ATTR_PWM_1TO3_LOCK(1),
NULL
};
static struct attribute *dme1737_attr_pwm2_lock[] = {
- SENSOR_DEV_ATTR_PWM_1TO3_LOCK(2),
+ SENSOR_DEV_ATTR_PWM_1TO3_LOCK(2),
NULL
};
static struct attribute *dme1737_attr_pwm3_lock[] = {
- SENSOR_DEV_ATTR_PWM_1TO3_LOCK(3),
+ SENSOR_DEV_ATTR_PWM_1TO3_LOCK(3),
NULL
};
static struct attribute *dme1737_attr_pwm5_lock[] = {
- SENSOR_DEV_ATTR_PWM_5TO6_LOCK(5),
+ SENSOR_DEV_ATTR_PWM_5TO6_LOCK(5),
NULL
};
static struct attribute *dme1737_attr_pwm6_lock[] = {
- SENSOR_DEV_ATTR_PWM_5TO6_LOCK(6),
+ SENSOR_DEV_ATTR_PWM_5TO6_LOCK(6),
NULL
};
@@ -1678,6 +1734,16 @@ static struct attribute *dme1737_attr_pwm[] = {
* Super-IO functions
* --------------------------------------------------------------------- */
+static inline void dme1737_sio_enter(int sio_cip)
+{
+ outb(0x55, sio_cip);
+}
+
+static inline void dme1737_sio_exit(int sio_cip)
+{
+ outb(0xaa, sio_cip);
+}
+
static inline int dme1737_sio_inb(int sio_cip, int reg)
{
outb(reg, sio_cip);
@@ -1690,136 +1756,196 @@ static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
outb(val, sio_cip + 1);
}
-static int dme1737_sio_get_features(int sio_cip, struct i2c_client *client)
+/* ---------------------------------------------------------------------
+ * Device initialization
+ * --------------------------------------------------------------------- */
+
+static int dme1737_i2c_get_features(int, struct dme1737_data*);
+
+static void dme1737_chmod_file(struct device *dev,
+ struct attribute *attr, mode_t mode)
{
- struct dme1737_data *data = i2c_get_clientdata(client);
- int err = 0, reg;
- u16 addr;
+ if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
+ dev_warn(dev, "Failed to change permissions of %s.\n",
+ attr->name);
+ }
+}
- /* Enter configuration mode */
- outb(0x55, sio_cip);
+static void dme1737_chmod_group(struct device *dev,
+ const struct attribute_group *group,
+ mode_t mode)
+{
+ struct attribute **attr;
- /* Check device ID
- * The DME1737 can return either 0x78 or 0x77 as its device ID. */
- reg = dme1737_sio_inb(sio_cip, 0x20);
- if (!(reg == 0x77 || reg == 0x78)) {
- err = -ENODEV;
- goto exit;
+ for (attr = group->attrs; *attr; attr++) {
+ dme1737_chmod_file(dev, *attr, mode);
}
+}
- /* Select logical device A (runtime registers) */
- dme1737_sio_outb(sio_cip, 0x07, 0x0a);
+static void dme1737_remove_files(struct device *dev)
+{
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ int ix;
- /* Get the base address of the runtime registers */
- if (!(addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
- dme1737_sio_inb(sio_cip, 0x61))) {
- err = -ENODEV;
- goto exit;
+ for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
+ if (data->has_fan & (1 << ix)) {
+ sysfs_remove_group(&dev->kobj,
+ &dme1737_fan_group[ix]);
+ }
}
- /* Read the runtime registers to determine which optional features
- * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
- * to '10' if the respective feature is enabled. */
- if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
- data->has_fan |= (1 << 5);
+ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
+ if (data->has_pwm & (1 << ix)) {
+ sysfs_remove_group(&dev->kobj,
+ &dme1737_pwm_group[ix]);
+ }
}
- if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
- data->has_pwm |= (1 << 5);
+
+ sysfs_remove_group(&dev->kobj, &dme1737_group);
+
+ if (!data->client.driver) {
+ sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
}
- if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
- data->has_fan |= (1 << 4);
+}
+
+static int dme1737_create_files(struct device *dev)
+{
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ int err, ix;
+
+ /* Create a name attribute for ISA devices */
+ if (!data->client.driver &&
+ (err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr))) {
+ goto exit;
}
- if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
- data->has_pwm |= (1 << 4);
+
+ /* Create standard sysfs attributes */
+ if ((err = sysfs_create_group(&dev->kobj, &dme1737_group))) {
+ goto exit_remove;
}
-exit:
- /* Exit configuration mode */
- outb(0xaa, sio_cip);
+ /* Create fan sysfs attributes */
+ for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
+ if (data->has_fan & (1 << ix)) {
+ if ((err = sysfs_create_group(&dev->kobj,
+ &dme1737_fan_group[ix]))) {
+ goto exit_remove;
+ }
+ }
+ }
- return err;
-}
+ /* Create PWM sysfs attributes */
+ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
+ if (data->has_pwm & (1 << ix)) {
+ if ((err = sysfs_create_group(&dev->kobj,
+ &dme1737_pwm_group[ix]))) {
+ goto exit_remove;
+ }
+ }
+ }
-/* ---------------------------------------------------------------------
- * Device detection, registration and initialization
- * --------------------------------------------------------------------- */
+ /* Inform if the device is locked. Otherwise change the permissions of
+ * selected attributes from read-only to read-writeable. */
+ if (data->config & 0x02) {
+ dev_info(dev, "Device is locked. Some attributes "
+ "will be read-only.\n");
+ } else {
+ /* Change permissions of standard attributes */
+ dme1737_chmod_group(dev, &dme1737_lock_group,
+ S_IRUGO | S_IWUSR);
-static struct i2c_driver dme1737_driver;
+ /* Change permissions of PWM attributes */
+ for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_lock_group); ix++) {
+ if (data->has_pwm & (1 << ix)) {
+ dme1737_chmod_group(dev,
+ &dme1737_pwm_lock_group[ix],
+ S_IRUGO | S_IWUSR);
+ }
+ }
-static void dme1737_chmod_file(struct i2c_client *client,
- struct attribute *attr, mode_t mode)
-{
- if (sysfs_chmod_file(&client->dev.kobj, attr, mode)) {
- dev_warn(&client->dev, "Failed to change permissions of %s.\n",
- attr->name);
+ /* Change permissions of pwm[1-3] if in manual mode */
+ for (ix = 0; ix < 3; ix++) {
+ if ((data->has_pwm & (1 << ix)) &&
+ (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
+ dme1737_chmod_file(dev,
+ dme1737_attr_pwm[ix],
+ S_IRUGO | S_IWUSR);
+ }
+ }
}
-}
-static void dme1737_chmod_group(struct i2c_client *client,
- const struct attribute_group *group,
- mode_t mode)
-{
- struct attribute **attr;
+ return 0;
- for (attr = group->attrs; *attr; attr++) {
- dme1737_chmod_file(client, *attr, mode);
- }
+exit_remove:
+ dme1737_remove_files(dev);
+exit:
+ return err;
}
-static int dme1737_init_client(struct i2c_client *client)
+static int dme1737_init_device(struct device *dev)
{
- struct dme1737_data *data = i2c_get_clientdata(client);
+ struct dme1737_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = &data->client;
int ix;
u8 reg;
- data->config = dme1737_read(client, DME1737_REG_CONFIG);
- /* Inform if part is not monitoring/started */
- if (!(data->config & 0x01)) {
- if (!force_start) {
- dev_err(&client->dev, "Device is not monitoring. "
- "Use the force_start load parameter to "
- "override.\n");
- return -EFAULT;
- }
-
- /* Force monitoring */
- data->config |= 0x01;
- dme1737_write(client, DME1737_REG_CONFIG, data->config);
- }
+ data->config = dme1737_read(client, DME1737_REG_CONFIG);
+ /* Inform if part is not monitoring/started */
+ if (!(data->config & 0x01)) {
+ if (!force_start) {
+ dev_err(dev, "Device is not monitoring. "
+ "Use the force_start load parameter to "
+ "override.\n");
+ return -EFAULT;
+ }
+
+ /* Force monitoring */
+ data->config |= 0x01;
+ dme1737_write(client, DME1737_REG_CONFIG, data->config);
+ }
/* Inform if part is not ready */
if (!(data->config & 0x04)) {
- dev_err(&client->dev, "Device is not ready.\n");
+ dev_err(dev, "Device is not ready.\n");
return -EFAULT;
}
- data->config2 = dme1737_read(client, DME1737_REG_CONFIG2);
- /* Check if optional fan3 input is enabled */
- if (data->config2 & 0x04) {
- data->has_fan |= (1 << 2);
- }
+ /* Determine which optional fan and pwm features are enabled/present */
+ if (client->driver) { /* I2C chip */
+ data->config2 = dme1737_read(client, DME1737_REG_CONFIG2);
+ /* Check if optional fan3 input is enabled */
+ if (data->config2 & 0x04) {
+ data->has_fan |= (1 << 2);
+ }
- /* Fan4 and pwm3 are only available if the client's I2C address
- * is the default 0x2e. Otherwise the I/Os associated with these
- * functions are used for addr enable/select. */
- if (client->addr == 0x2e) {
- data->has_fan |= (1 << 3);
- data->has_pwm |= (1 << 2);
- }
+ /* Fan4 and pwm3 are only available if the client's I2C address
+ * is the default 0x2e. Otherwise the I/Os associated with
+ * these functions are used for addr enable/select. */
+ if (data->client.addr == 0x2e) {
+ data->has_fan |= (1 << 3);
+ data->has_pwm |= (1 << 2);
+ }
- /* Determine if the optional fan[5-6] and/or pwm[5-6] are enabled.
- * For this, we need to query the runtime registers through the
- * Super-IO LPC interface. Try both config ports 0x2e and 0x4e. */
- if (dme1737_sio_get_features(0x2e, client) &&
- dme1737_sio_get_features(0x4e, client)) {
- dev_warn(&client->dev, "Failed to query Super-IO for optional "
- "features.\n");
+ /* Determine which of the optional fan[5-6] and pwm[5-6]
+ * features are enabled. For this, we need to query the runtime
+ * registers through the Super-IO LPC interface. Try both
+ * config ports 0x2e and 0x4e. */
+ if (dme1737_i2c_get_features(0x2e, data) &&
+ dme1737_i2c_get_features(0x4e, data)) {
+ dev_warn(dev, "Failed to query Super-IO for optional "
+ "features.\n");
+ }
+ } else { /* ISA chip */
+ /* Fan3 and pwm3 are always available. Fan[4-5] and pwm[5-6]
+ * don't exist in the ISA chip. */
+ data->has_fan |= (1 << 2);
+ data->has_pwm |= (1 << 2);
}
/* Fan1, fan2, pwm1, and pwm2 are always present */
data->has_fan |= 0x03;
data->has_pwm |= 0x03;
- dev_info(&client->dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
+ dev_info(dev, "Optional features: pwm3=%s, pwm5=%s, pwm6=%s, "
"fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
(data->has_pwm & (1 << 2)) ? "yes" : "no",
(data->has_pwm & (1 << 4)) ? "yes" : "no",
@@ -1831,13 +1957,19 @@ static int dme1737_init_client(struct i2c_client *client)
reg = dme1737_read(client, DME1737_REG_TACH_PWM);
/* Inform if fan-to-pwm mapping differs from the default */
- if (reg != 0xa4) {
- dev_warn(&client->dev, "Non-standard fan to pwm mapping: "
+ if (client->driver && reg != 0xa4) { /* I2C chip */
+ dev_warn(dev, "Non-standard fan to pwm mapping: "
"fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, "
"fan4->pwm%d. Please report to the driver "
"maintainer.\n",
(reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1);
+ } else if (!client->driver && reg != 0x24) { /* ISA chip */
+ dev_warn(dev, "Non-standard fan to pwm mapping: "
+ "fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. "
+ "Please report to the driver maintainer.\n",
+ (reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
+ ((reg >> 4) & 0x03) + 1);
}
/* Switch pwm[1-3] to manual mode if they are currently disabled and
@@ -1849,7 +1981,7 @@ static int dme1737_init_client(struct i2c_client *client)
DME1737_REG_PWM_CONFIG(ix));
if ((data->has_pwm & (1 << ix)) &&
(PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
- dev_info(&client->dev, "Switching pwm%d to "
+ dev_info(dev, "Switching pwm%d to "
"manual mode.\n", ix + 1);
data->pwm_config[ix] = PWM_EN_TO_REG(1,
data->pwm_config[ix]);
@@ -1872,13 +2004,67 @@ static int dme1737_init_client(struct i2c_client *client)
return 0;
}
-static int dme1737_detect(struct i2c_adapter *adapter, int address,
- int kind)
+/* ---------------------------------------------------------------------
+ * I2C device detection and registration
+ * --------------------------------------------------------------------- */
+
+static struct i2c_driver dme1737_i2c_driver;
+
+static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
+{
+ int err = 0, reg;
+ u16 addr;
+
+ dme1737_sio_enter(sio_cip);
+
+ /* Check device ID
+ * The DME1737 can return either 0x78 or 0x77 as its device ID. */
+ reg = dme1737_sio_inb(sio_cip, 0x20);
+ if (!(reg == 0x77 || reg == 0x78)) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ /* Select logical device A (runtime registers) */
+ dme1737_sio_outb(sio_cip, 0x07, 0x0a);
+
+ /* Get the base address of the runtime registers */
+ if (!(addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
+ dme1737_sio_inb(sio_cip, 0x61))) {
+ err = -ENODEV;
+ goto exit;
+ }
+
+ /* Read the runtime registers to determine which optional features
+ * are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
+ * to '10' if the respective feature is enabled. */
+ if ((inb(addr + 0x43) & 0x0c) == 0x08) { /* fan6 */
+ data->has_fan |= (1 << 5);
+ }
+ if ((inb(addr + 0x44) & 0x0c) == 0x08) { /* pwm6 */
+ data->has_pwm |= (1 << 5);
+ }
+ if ((inb(addr + 0x45) & 0x0c) == 0x08) { /* fan5 */
+ data->has_fan |= (1 << 4);
+ }
+ if ((inb(addr + 0x46) & 0x0c) == 0x08) { /* pwm5 */
+ data->has_pwm |= (1 << 4);
+ }
+
+exit:
+ dme1737_sio_exit(sio_cip);
+
+ return err;
+}
+
+static int dme1737_i2c_detect(struct i2c_adapter *adapter, int address,
+ int kind)
{
u8 company, verstep = 0;
struct i2c_client *client;
struct dme1737_data *data;
- int ix, err = 0;
+ struct device *dev;
+ int err = 0;
const char *name;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
@@ -1894,7 +2080,8 @@ static int dme1737_detect(struct i2c_adapter *adapter, int address,
i2c_set_clientdata(client, data);
client->addr = address;
client->adapter = adapter;
- client->driver = &dme1737_driver;
+ client->driver = &dme1737_i2c_driver;
+ dev = &client->dev;
/* A negative kind means that the driver was loaded with no force
* parameter (default), so we must identify the chip. */
@@ -1922,92 +2109,33 @@ static int dme1737_detect(struct i2c_adapter *adapter, int address,
goto exit_kfree;
}
+ dev_info(dev, "Found a DME1737 chip at 0x%02x (rev 0x%02x).\n",
+ client->addr, verstep);
+
/* Initialize the DME1737 chip */
- if ((err = dme1737_init_client(client))) {
+ if ((err = dme1737_init_device(dev))) {
+ dev_err(dev, "Failed to initialize device.\n");
goto exit_detach;
}
- /* Create standard sysfs attributes */
- if ((err = sysfs_create_group(&client->dev.kobj, &dme1737_group))) {
- goto exit_detach;
- }
-
- /* Create fan sysfs attributes */
- for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
- if (data->has_fan & (1 << ix)) {
- if ((err = sysfs_create_group(&client->dev.kobj,
- &dme1737_fan_group[ix]))) {
- goto exit_remove;
- }
- }
- }
-
- /* Create PWM sysfs attributes */
- for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
- if (data->has_pwm & (1 << ix)) {
- if ((err = sysfs_create_group(&client->dev.kobj,
- &dme1737_pwm_group[ix]))) {
- goto exit_remove;
- }
- }
- }
-
- /* Inform if the device is locked. Otherwise change the permissions of
- * selected attributes from read-only to read-writeable. */
- if (data->config & 0x02) {
- dev_info(&client->dev, "Device is locked. Some attributes "
- "will be read-only.\n");
- } else {
- /* Change permissions of standard attributes */
- dme1737_chmod_group(client, &dme1737_lock_group,
- S_IRUGO | S_IWUSR);
-
- /* Change permissions of PWM attributes */
- for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_lock_group); ix++) {
- if (data->has_pwm & (1 << ix)) {
- dme1737_chmod_group(client,
- &dme1737_pwm_lock_group[ix],
- S_IRUGO | S_IWUSR);
- }
- }
-
- /* Change permissions of pwm[1-3] if in manual mode */
- for (ix = 0; ix < 3; ix++) {
- if ((data->has_pwm & (1 << ix)) &&
- (PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
- dme1737_chmod_file(client,
- dme1737_attr_pwm[ix],
- S_IRUGO | S_IWUSR);
- }
- }
+ /* Create sysfs files */
+ if ((err = dme1737_create_files(dev))) {
+ dev_err(dev, "Failed to create sysfs files.\n");
+ goto exit_detach;
}
/* Register device */
- data->class_dev = hwmon_device_register(&client->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)) {
+ dev_err(dev, "Failed to register device.\n");
+ err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
- dev_info(&adapter->dev, "Found a DME1737 chip at 0x%02x "
- "(rev 0x%02x)\n", client->addr, verstep);
-
return 0;
exit_remove:
- for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
- if (data->has_fan & (1 << ix)) {
- sysfs_remove_group(&client->dev.kobj,
- &dme1737_fan_group[ix]);
- }
- }
- for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
- if (data->has_pwm & (1 << ix)) {
- sysfs_remove_group(&client->dev.kobj,
- &dme1737_pwm_group[ix]);
- }
- }
- sysfs_remove_group(&client->dev.kobj, &dme1737_group);
+ dme1737_remove_files(dev);
exit_detach:
i2c_detach_client(client);
exit_kfree:
@@ -2016,60 +2144,260 @@ exit:
return err;
}
-static int dme1737_attach_adapter(struct i2c_adapter *adapter)
+static int dme1737_i2c_attach_adapter(struct i2c_adapter *adapter)
{
if (!(adapter->class & I2C_CLASS_HWMON)) {
return 0;
}
- return i2c_probe(adapter, &addr_data, dme1737_detect);
+ return i2c_probe(adapter, &addr_data, dme1737_i2c_detect);
}
-static int dme1737_detach_client(struct i2c_client *client)
+static int dme1737_i2c_detach_client(struct i2c_client *client)
{
struct dme1737_data *data = i2c_get_clientdata(client);
- int ix, err;
+ int err;
- hwmon_device_unregister(data->class_dev);
+ hwmon_device_unregister(data->hwmon_dev);
+ dme1737_remove_files(&client->dev);
- for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
- if (data->has_fan & (1 << ix)) {
- sysfs_remove_group(&client->dev.kobj,
- &dme1737_fan_group[ix]);
- }
+ if ((err = i2c_detach_client(client))) {
+ return err;
}
- for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
- if (data->has_pwm & (1 << ix)) {
- sysfs_remove_group(&client->dev.kobj,
- &dme1737_pwm_group[ix]);
- }
+
+ kfree(data);
+ return 0;
+}
+
+static struct i2c_driver dme1737_i2c_driver = {
+ .driver = {
+ .name = "dme1737",
+ },
+ .attach_adapter = dme1737_i2c_attach_adapter,
+ .detach_client = dme1737_i2c_detach_client,
+};
+
+/* ---------------------------------------------------------------------
+ * ISA device detection and registration
+ * --------------------------------------------------------------------- */
+
+static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
+{
+ int err = 0, reg;
+ unsigned short base_addr;
+
+ dme1737_sio_enter(sio_cip);
+
+ /* Check device ID
+ * We currently know about SCH3112 (0x7c), SCH3114 (0x7d), and
+ * SCH3116 (0x7f). */
+ reg = dme1737_sio_inb(sio_cip, 0x20);
+ if (!(reg == 0x7c || reg == 0x7d || reg == 0x7f)) {
+ err = -ENODEV;
+ goto exit;
}
- sysfs_remove_group(&client->dev.kobj, &dme1737_group);
- if ((err = i2c_detach_client(client))) {
- return err;
+ /* Select logical device A (runtime registers) */
+ dme1737_sio_outb(sio_cip, 0x07, 0x0a);
+
+ /* Get the base address of the runtime registers */
+ if (!(base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
+ dme1737_sio_inb(sio_cip, 0x61))) {
+ printk(KERN_ERR "dme1737: Base address not set.\n");
+ err = -ENODEV;
+ goto exit;
+ }
+
+ /* Access to the hwmon registers is through an index/data register
+ * pair located at offset 0x70/0x71. */
+ *addr = base_addr + 0x70;
+
+exit:
+ dme1737_sio_exit(sio_cip);
+ return err;
+}
+
+static int __init dme1737_isa_device_add(unsigned short addr)
+{
+ struct resource res = {
+ .start = addr,
+ .end = addr + DME1737_EXTENT - 1,
+ .name = "dme1737",
+ .flags = IORESOURCE_IO,
+ };
+ int err;
+
+ if (!(pdev = platform_device_alloc("dme1737", addr))) {
+ printk(KERN_ERR "dme1737: Failed to allocate device.\n");
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ if ((err = platform_device_add_resources(pdev, &res, 1))) {
+ printk(KERN_ERR "dme1737: Failed to add device resource "
+ "(err = %d).\n", err);
+ goto exit_device_put;
+ }
+
+ if ((err = platform_device_add(pdev))) {
+ printk(KERN_ERR "dme1737: Failed to add device (err = %d).\n",
+ err);
+ goto exit_device_put;
+ }
+
+ return 0;
+
+exit_device_put:
+ platform_device_put(pdev);
+ pdev = NULL;
+exit:
+ return err;
+}
+
+static int __devinit dme1737_isa_probe(struct platform_device *pdev)
+{
+ u8 company, device;
+ struct resource *res;
+ struct i2c_client *client;
+ struct dme1737_data *data;
+ struct device *dev = &pdev->dev;
+ int err;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!request_region(res->start, DME1737_EXTENT, "dme1737")) {
+ dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
+ (unsigned short)res->start,
+ (unsigned short)res->start + DME1737_EXTENT - 1);
+ err = -EBUSY;
+ goto exit;
+ }
+
+ if (!(data = kzalloc(sizeof(struct dme1737_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit_release_region;
+ }
+
+ client = &data->client;
+ i2c_set_clientdata(client, data);
+ client->addr = res->start;
+ platform_set_drvdata(pdev, data);
+
+ company = dme1737_read(client, DME1737_REG_COMPANY);
+ device = dme1737_read(client, DME1737_REG_DEVICE);
+
+ if (!((company == DME1737_COMPANY_SMSC) &&
+ (device == SCH311X_DEVICE))) {
+ err = -ENODEV;
+ goto exit_kfree;
+ }
+
+ /* Fill in the remaining client fields and initialize the mutex */
+ strlcpy(client->name, "sch311x", I2C_NAME_SIZE);
+ mutex_init(&data->update_lock);
+
+ dev_info(dev, "Found a SCH311x chip at 0x%04x\n", client->addr);
+
+ /* Initialize the chip */
+ if ((err = dme1737_init_device(dev))) {
+ dev_err(dev, "Failed to initialize device.\n");
+ goto exit_kfree;
}
+ /* Create sysfs files */
+ if ((err = dme1737_create_files(dev))) {
+ dev_err(dev, "Failed to create sysfs files.\n");
+ goto exit_kfree;
+ }
+
+ /* Register device */
+ data->hwmon_dev = hwmon_device_register(dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ dev_err(dev, "Failed to register device.\n");
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove_files;
+ }
+
+ return 0;
+
+exit_remove_files:
+ dme1737_remove_files(dev);
+exit_kfree:
+ platform_set_drvdata(pdev, NULL);
+ kfree(data);
+exit_release_region:
+ release_region(res->start, DME1737_EXTENT);
+exit:
+ return err;
+}
+
+static int __devexit dme1737_isa_remove(struct platform_device *pdev)
+{
+ struct dme1737_data *data = platform_get_drvdata(pdev);
+
+ hwmon_device_unregister(data->hwmon_dev);
+ dme1737_remove_files(&pdev->dev);
+ release_region(data->client.addr, DME1737_EXTENT);
+ platform_set_drvdata(pdev, NULL);
kfree(data);
+
return 0;
}
-static struct i2c_driver dme1737_driver = {
+static struct platform_driver dme1737_isa_driver = {
.driver = {
+ .owner = THIS_MODULE,
.name = "dme1737",
},
- .attach_adapter = dme1737_attach_adapter,
- .detach_client = dme1737_detach_client,
+ .probe = dme1737_isa_probe,
+ .remove = __devexit_p(dme1737_isa_remove),
};
+/* ---------------------------------------------------------------------
+ * Module initialization and cleanup
+ * --------------------------------------------------------------------- */
+
static int __init dme1737_init(void)
{
- return i2c_add_driver(&dme1737_driver);
+ int err;
+ unsigned short addr;
+
+ if ((err = i2c_add_driver(&dme1737_i2c_driver))) {
+ goto exit;
+ }
+
+ if (dme1737_isa_detect(0x2e, &addr) &&
+ dme1737_isa_detect(0x4e, &addr)) {
+ /* Return 0 if we didn't find an ISA device */
+ return 0;
+ }
+
+ if ((err = platform_driver_register(&dme1737_isa_driver))) {
+ goto exit_del_i2c_driver;
+ }
+
+ /* Sets global pdev as a side effect */
+ if ((err = dme1737_isa_device_add(addr))) {
+ goto exit_del_isa_driver;
+ }
+
+ return 0;
+
+exit_del_isa_driver:
+ platform_driver_unregister(&dme1737_isa_driver);
+exit_del_i2c_driver:
+ i2c_del_driver(&dme1737_i2c_driver);
+exit:
+ return err;
}
static void __exit dme1737_exit(void)
{
- i2c_del_driver(&dme1737_driver);
+ if (pdev) {
+ platform_device_unregister(pdev);
+ platform_driver_unregister(&dme1737_isa_driver);
+ }
+
+ i2c_del_driver(&dme1737_i2c_driver);
}
MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-26 06:53:24 +0300