Hi Jean and all others,
Attached is a new attempt at a kernel patch with SMSC 47M192 driver.
New features:
* patch is now relative to 2.6.16-rc5 (I had to change the driver
definition in order to make it work - hope this is correct?)
* initialize alarm limits if monitoring is not running at the time of
loading the driver
* don't create in4_* files in /sys if 12V input pin is used for VID4
* proper assignment of temperature offsets to temp* channels
* create individual files for all alarms (temp*_alarm, temp*_fault,
in*_alarm). I've still kept the bit patterns alarms_temp etc for now,
so there is redundant information.
* add definition of individual alarm files to sysfs-interface
documentation
* add cross references into kernel configuration help texts for
smsc47m192 and smsc47m1 drivers
* add smsc47m192 driver documentation
Best regards,
Hartmut
-------------- next part --------------
diff -uprN1 linux-2.6.16-rc5/Documentation/hwmon/smsc47m192 linux-2.6.16-new/Documentation/hwmon/smsc47m192
--- linux-2.6.16-rc5/Documentation/hwmon/smsc47m192 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-new/Documentation/hwmon/smsc47m192 2006-03-04 22:00:17.000000000 +0100
@@ -0,0 +1,105 @@
+Kernel driver smsc47m192
+========================
+
+Supported chips:
+ * SMSC LPC47M192 and LPC47M997
+ Prefix: 'smsc47m192'
+ Addresses scanned: I2C 0x2c - 0x2d
+ Datasheet: The datasheet for LPC47M192 is publicly available from
+ http://www.smsc.com
+ The LPC47M997 is compatible for hardware monitoring
+
+Author: Hartmut Rick <linux at rick.claranet.de>
+ Special thanks to Jean Delvare for careful checking of
+ the code and many helpful comments and suggestions.
+
+
+Description
+-----------
+
+This driver implements support for the hardware sensor capabilities
+of the SMSC LPC47M192 and LPC47M997 Super-I/O chips.
+
+These chips support 3 temperature channels and 8 voltage inputs
+as well as CPU voltage VID input.
+
+They do also have fan monitoring and control capabilities, but the
+latter are accessed via ISA bus and are not supported by this driver.
+Use the 'smsc47m1' driver for fan monitoring.
+
+Voltages and temperatures are measured by an 8-bit ADC, the resolution
+of the temperatures is 1 bit per degree C.
+Voltages are scaled such that the nominal voltage corresponds to
+192 counts, i.e. 3/4 of the full range. Thus the available range for
+each voltage channel is 0V ... 255/192*(nominal voltage), the resolution
+is 1 bit per (nominal voltage)/192.
+Both voltage and temperature values are scaled by 1000, the sys files
+show voltages in mV and temperatures in units of 0.001 degC.
+
+The +12V analog voltage input channel (in4_input) is multiplexed with
+bit 4 of the encoded CPU voltage. This means that you either get
+a +12V voltage measurement or a 5 bit CPU VID, but not both.
+The default setting is to use the pin as 12V input, and use only 4 bit VID.
+This driver assumes that the information in the configuration register
+is correct, i.e. that the BIOS has updated the configuration if
+the motherboard has this input wired to VID4.
+
+
+/sys files
+----------
+
+in0_input - +2.5V voltage input
+in1_input - CPU voltage input (nominal 2.25V)
+in2_input - +3.3V voltage input
+in3_input - +5V voltage input
+in4_input - +12V voltage input (may be missing if used as VID4)
+in5_input - Vcc voltage input (nominal 3.3V)
+ This is the supply voltage of the sensor chip itself.
+in6_input - +1.5V voltage input
+in7_input - +1.8V voltage input
+
+in[0-7]_min,
+in[0-7]_max - lower and upper alarm thresholds for in[0-7]_input reading
+
+ All voltages are read and written in mV.
+
+in_[0-7]_alarm - alarm flags for voltage inputs
+ These files read '1' in case of alarm, '0' otherwise.
+alarms_in - alarm flags for voltage inputs
+ This file contains all voltage alarms, bit-packed,
+ bit 0 for in0_input. A set bit indicates an alarm.
+
+temp1_input - chip temperature measured by on-chip diode
+temp[2-3]_input - temperature measured by external diodes (one of these would
+ typically be wired to the diode inside the CPU)
+
+temp[1-3]_min,
+temp[1-3]_max - lower and upper alarm thresholds for temperatures
+
+temp[1-3]_offset - temperature offset registers
+ The chip adds the offsets stored in these registers to
+ the corresponding temperature readings.
+ Note that temp1 and temp2 offsets share the same register,
+ they can not both be different from zero at the same time.
+ Writing a non-zero number to one of them will reset the other
+ offset to zero.
+
+ All temperatures and offsets are read and written in
+ units of 0.001 degC.
+
+temp[1-3]_alarm - alarm flags for temperature inputs, '1' in case of alarm,
+ '0' otherwise.
+alarms_temp - alarm flags in one number, bits packed, bit 0 for temp1
+temp[2-3]_fault - diode fault flags for temperature inputs 2 and 3.
+ A fault is detected if the two pins for the corresponding
+ sensor are open or shorted, or any of the two is shortened
+ to ground or Vcc.
+faults_temp - diode fault flags, bits packed, bits 1 and 2 for temp2
+ and temp3 faults, respectively.
+
+cpu0_vid - CPU voltage as received from the CPU
+
+vrm - CPU VID standard used for decoding CPU voltage
+
+The *_min, *_max, *_offset and vrm files can be read and written, all others
+ are read-only
diff -uprN1 linux-2.6.16-rc5/Documentation/hwmon/sysfs-interface linux-2.6.16-new/Documentation/hwmon/sysfs-interface
--- linux-2.6.16-rc5/Documentation/hwmon/sysfs-interface 2006-03-04 20:11:31.000000000 +0100
+++ linux-2.6.16-new/Documentation/hwmon/sysfs-interface 2006-03-04 22:00:17.000000000 +0100
@@ -220,2 +220,20 @@ temp[1-2]_crit_hyst
+temp[1-4]_offset
+ Temperature offset which is added to the temperature reading
+ by the chip.
+ Unit: millidegree Celsius
+ Read/Write only value.
+
+temp[1-4]_alarm
+ Temperature alarm for one channel. '0' means no alarm,
+ '1' means alarm is active. If there is more than one
+ different kind of alarm, numbers larger than 1 can be used.
+ Read-only value
+
+temp[1-4]_fault
+ Temperature sensor fault. '0' means no fault, '1' or larger
+ means a fault was detected.
+ Read-only value
+
+
If there are multiple temperature sensors, temp1_* is
@@ -279,2 +297,7 @@ alarms_temp Alarm bitmask relative to te
+faults_temp Fault bitmask for temperature channels
+ Read only
+ A '1' bit means a temperature sensor fault is detected,
+ LSB corresponds to temp1 and so on
+
beep_enable Beep/interrupt enable
diff -uprN1 linux-2.6.16-rc5/drivers/hwmon/Kconfig linux-2.6.16-new/drivers/hwmon/Kconfig
--- linux-2.6.16-rc5/drivers/hwmon/Kconfig 2006-03-04 20:11:32.000000000 +0100
+++ linux-2.6.16-new/drivers/hwmon/Kconfig 2006-03-04 22:00:17.000000000 +0100
@@ -335,3 +335,8 @@ config SENSORS_SMSC47M1
monitoring and control capabilities of the SMSC LPC47B27x,
- LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x and LPC47M192 chips.
+ LPC47M10x, LPC47M13x, LPC47M14x, LPC47M15x, LPC47M192 and
+ LPC47M997 chips.
+
+ The temperature and voltage sensor features of the LPC47M192
+ and LPC47M997 are supported by another driver, select also
+ "SMSC LPC47M192 and compatibles" below for those.
@@ -340,2 +345,18 @@ config SENSORS_SMSC47M1
+config SENSORS_SMSC47M192
+ tristate "SMSC LPC47M192 and compatibles"
+ depends on HWMON && I2C && EXPERIMENTAL
+ select HWMON_VID
+ help
+ If you say yes here you get support for the temperature and
+ voltage sensors of the SMSC LPC47M192 and LPC47M997 chips.
+
+ The fan monitoring and control capabilities of these chips
+ are supported by another driver, select
+ "SMSC LPC47M10x and compatibles" above. You need both drivers
+ if you want fan control and voltage/temperature sensor support.
+
+ This driver can also be built as a module. If so, the module
+ will be called smsc47m192.
+
config SENSORS_SMSC47B397
diff -uprN1 linux-2.6.16-rc5/drivers/hwmon/Makefile linux-2.6.16-new/drivers/hwmon/Makefile
--- linux-2.6.16-rc5/drivers/hwmon/Makefile 2006-03-04 20:11:32.000000000 +0100
+++ linux-2.6.16-new/drivers/hwmon/Makefile 2006-03-04 22:00:17.000000000 +0100
@@ -42,2 +42,3 @@ obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc4
obj-$(CONFIG_SENSORS_SMSC47M1) += smsc47m1.o
+obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
obj-$(CONFIG_SENSORS_VIA686A) += via686a.o
diff -uprN1 linux-2.6.16-rc5/drivers/hwmon/smsc47m192.c linux-2.6.16-new/drivers/hwmon/smsc47m192.c
--- linux-2.6.16-rc5/drivers/hwmon/smsc47m192.c 1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.16-new/drivers/hwmon/smsc47m192.c 2006-03-04 22:31:30.000000000 +0100
@@ -0,0 +1,678 @@
+/*
+ smsc47m192.c - Support for hardware monitoring block of
+ SMSC LPC47M192 and LPC47M997 Super I/O chips.
+
+ Copyright (C) 2006 Hartmut Rick <linux at rick.claranet.de>
+
+ derived from lm78.c and other chip drivers
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/hwmon-vid.h>
+#include <linux/err.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(smsc47m192);
+
+/* SMSC47M192 registers */
+#define SMSC47M192_REG_IN_MAX(nr) (0x2b + (nr) * 2 + ((nr)>5 ? 0x1d : 0))
+#define SMSC47M192_REG_IN_MIN(nr) (0x2c + (nr) * 2 + ((nr)>5 ? 0x1d : 0))
+#define SMSC47M192_REG_IN(nr) (0x20 + (nr) + ((nr)>5 ? 0x2a : 0))
+
+#define SMSC47M192_REG_TEMP(nr) (0x27 - (nr) + ((nr)>1 ? 0x2d : 0))
+#define SMSC47M192_REG_TEMP_MAX(nr) (0x39 - (nr) * 2 + ((nr)>1 ? 0x23 : 0))
+#define SMSC47M192_REG_TEMP_MIN(nr) (0x3a - (nr) * 2 + ((nr)>1 ? 0x23 : 0))
+#define SMSC47M192_REG_TEMP_OFFSET(nr) (0x1f - ((nr)>1 ? 1 : 0))
+
+#define SMSC47M192_REG_ALARM1 0x41
+#define SMSC47M192_REG_ALARM2 0x42
+
+#define SMSC47M192_REG_VID 0x47
+#define SMSC47M192_REG_VID4 0x49
+
+#define SMSC47M192_REG_CONFIG 0x40
+#define SMSC47M192_REG_SFR 0x4f
+#define SMSC47M192_REG_COMPANY_ID 0x3e
+#define SMSC47M192_REG_VERSION 0x3f
+
+/* generalised scaling with integer rounding */
+static inline int SCALE(long val, int mul, int div)
+{
+ if (val < 0)
+ return (val * mul - div / 2) / div;
+ else
+ return (val * mul + div / 2) / div;
+}
+
+/* Conversions */
+
+/* smsc47m192 internally scales voltage measurements */
+static const u16 nom_mv[] = { 2500, 2250, 3300, 5000, 12000, 3300, 1500, 1800 };
+
+static inline unsigned int IN_FROM_REG(u8 reg, int n)
+{
+ return SCALE(reg, nom_mv[n], 192);
+}
+
+static inline u8 IN_TO_REG(unsigned long val, int n)
+{
+ return SENSORS_LIMIT(SCALE(val, 192, nom_mv[n]), 0, 255);
+}
+
+/* TEMP: 0.001 degC units (-128C to +127C)
+ REG: 1C/bit, two's complement */
+static inline s8 TEMP_TO_REG(int val)
+{
+ return SENSORS_LIMIT(SCALE(val, 1, 1000), -128000, 127000);
+}
+
+static inline int TEMP_FROM_REG(s8 val)
+{
+ return val * 1000;
+}
+
+struct smsc47m192_data {
+ struct i2c_client client;
+ struct class_device *class_dev;
+ struct semaphore update_lock;
+ char valid; /* !=0 if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ u8 in[8]; /* Register value */
+ u8 in_max[8]; /* Register value */
+ u8 in_min[8]; /* Register value */
+ s8 temp[3]; /* Register value */
+ s8 temp_max[3]; /* Register value */
+ s8 temp_min[3]; /* Register value */
+ s8 temp_offset[3]; /* Register value */
+ u16 raw_alarms; /* Register encoding, combined */
+ u8 alarm[3];
+ u8 vid; /* Register encoding, combined */
+ u8 vrm;
+};
+
+static int smsc47m192_attach_adapter(struct i2c_adapter *adapter);
+static int smsc47m192_detect(struct i2c_adapter *adapter,int address,int kind);
+static int smsc47m192_detach_client(struct i2c_client *client);
+
+static struct smsc47m192_data *smsc47m192_update_device(struct device *dev);
+static void smsc47m192_init_client(struct i2c_client *client);
+
+static struct i2c_driver smsc47m192_driver = {
+ .driver = {
+ .name = "smsc47m192",
+ },
+ .attach_adapter = smsc47m192_attach_adapter,
+ .detach_client = smsc47m192_detach_client,
+};
+
+/* Voltages */
+static ssize_t show_in(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
+}
+
+static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
+}
+
+static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
+}
+
+static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->in_min[nr] = IN_TO_REG(val,nr);
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MIN(nr),
+ data->in_min[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->in_max[nr] = IN_TO_REG(val,nr);
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_IN_MAX(nr),
+ data->in_max[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+#define show_in_offset(offset) \
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \
+ show_in, NULL, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
+ show_in_min, set_in_min, offset); \
+static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
+ show_in_max, set_in_max, offset);
+
+show_in_offset(0);
+show_in_offset(1);
+show_in_offset(2);
+show_in_offset(3);
+show_in_offset(4);
+show_in_offset(5);
+show_in_offset(6);
+show_in_offset(7);
+
+/* Temperatures */
+static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr]));
+}
+
+static ssize_t show_temp_min(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_min[nr]));
+}
+
+static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max[nr]));
+}
+
+static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp_min[nr] = TEMP_TO_REG(val);
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MIN(nr),
+ data->temp_min[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp_max[nr] = TEMP_TO_REG(val);
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_TEMP_MAX(nr),
+ data->temp_max[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_temp_offset(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_offset[nr]));
+}
+
+static ssize_t set_temp_offset(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
+ long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->temp_offset[nr] = TEMP_TO_REG(val);
+ if (nr>1)
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
+ else if (data->temp_offset[nr] != 0) {
+ /* offset[0] and offset[1] share the same register,
+ SFR bit 4 activates offset[0] */
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
+ (sfr & 0xef) | (nr==0 ? 0x10 : 0));
+ data->temp_offset[1-nr] = 0;
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_TEMP_OFFSET(nr), data->temp_offset[nr]);
+ } else if ((sfr & 0x10) == (nr==0 ? 0x10 : 0))
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_TEMP_OFFSET(nr), 0);
+ up(&data->update_lock);
+ return count;
+}
+
+#define show_temp_index(index) \
+static SENSOR_DEVICE_ATTR(temp##index##_input, S_IRUGO, \
+ show_temp, NULL, index-1); \
+static SENSOR_DEVICE_ATTR(temp##index##_min, S_IRUGO | S_IWUSR, \
+ show_temp_min, set_temp_min, index-1); \
+static SENSOR_DEVICE_ATTR(temp##index##_max, S_IRUGO | S_IWUSR, \
+ show_temp_max, set_temp_max, index-1); \
+static SENSOR_DEVICE_ATTR(temp##index##_offset, S_IRUGO | S_IWUSR, \
+ show_temp_offset, set_temp_offset, index-1);
+
+show_temp_index(1);
+show_temp_index(2);
+show_temp_index(3);
+
+/* VID */
+static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
+}
+static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
+
+static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%d\n", data->vrm);
+}
+
+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 smsc47m192_data *data = i2c_get_clientdata(client);
+ data->vrm = simple_strtoul(buf, NULL, 10);
+ return count;
+}
+static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
+
+/* Alarms */
+static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%u\n", data->alarm[nr]);
+}
+
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+ int nr = sensor_attr->index;
+ struct smsc47m192_data *data = smsc47m192_update_device(dev);
+ return sprintf(buf, "%u\n", (data->raw_alarms & nr)!=0 ? 1 : 0);
+}
+
+static SENSOR_DEVICE_ATTR(alarms_in, S_IRUGO, show_alarms, NULL, 0);
+static SENSOR_DEVICE_ATTR(alarms_temp, S_IRUGO, show_alarms, NULL, 1);
+static SENSOR_DEVICE_ATTR(faults_temp, S_IRUGO, show_alarms, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 0x0010);
+static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 0x0020);
+static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 0x0040);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 0x4000);
+static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 0x8000);
+static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0x0001);
+static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 0x0002);
+static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 0x0004);
+static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 0x0008);
+static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 0x0100);
+static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 0x0200);
+static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 0x0400);
+static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 0x0800);
+
+/* This function is called when:
+ * smsc47m192_driver is inserted (when this module is loaded), for each
+ available adapter
+ * when a new adapter is inserted (and smsc47m192_driver is still present) */
+static int smsc47m192_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+ return i2c_probe(adapter, &addr_data, smsc47m192_detect);
+}
+
+/* This function is called by i2c_probe */
+static int smsc47m192_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *client;
+ struct smsc47m192_data *data;
+ int err = 0;
+ int version, config;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ goto exit;
+
+ if (!(data = kzalloc(sizeof(struct smsc47m192_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ client = &data->client;
+ i2c_set_clientdata(client, data);
+ client->addr = address;
+ client->adapter = adapter;
+ client->driver = &smsc47m192_driver;
+
+ if (kind == 0)
+ kind = smsc47m192;
+
+ /* Detection criteria from sensors_detect script */
+
+ if (kind < 0) {
+ if ( i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_COMPANY_ID) == 0x55
+ && ((version = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_VERSION)) & 0xf0) == 0x20
+ && (i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_VID) & 0x70) == 0x00
+ && (i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_VID4) & 0xfe) == 0x80) {
+ dev_info(&adapter->dev,
+ "found SMSC47M192 or SMSC47M997, "
+ "version 2, stepping A%d\n",
+ version&0x0f);
+ } else {
+ dev_dbg(&adapter->dev,
+ "SMSC47M192 detection failed at 0x%02x.\n",
+ address);
+ goto exit_free;
+ }
+ }
+
+ /* Fill in the remaining client fields and put into the global list */
+ strlcpy(client->name, "smsc47m192", I2C_NAME_SIZE);
+ data->vrm = vid_which_vrm();
+ init_MUTEX(&data->update_lock);
+
+ /* Tell the I2C layer a new client has arrived */
+ if ((err = i2c_attach_client(client)))
+ goto exit_free;
+
+ /* Initialize the SMSC47M192 chip */
+ smsc47m192_init_client(client);
+
+ /* Register sysfs hooks */
+ data->class_dev = hwmon_device_register(&client->dev);
+ if (IS_ERR(data->class_dev)) {
+ err = PTR_ERR(data->class_dev);
+ goto exit_detach;
+ }
+
+ device_create_file(&client->dev, &sensor_dev_attr_in0_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in0_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in0_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in0_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in1_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in1_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in1_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in1_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in2_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in2_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in2_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in2_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in3_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in3_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in3_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in3_alarm.dev_attr);
+
+ /* Pin 110 is either in4 (+12V) or VID4 */
+ config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
+ if (!(config & 0x20)) {
+ device_create_file(&client->dev,
+ &sensor_dev_attr_in4_input.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_in4_min.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_in4_max.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_in4_alarm.dev_attr);
+ }
+ device_create_file(&client->dev, &sensor_dev_attr_in5_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in5_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in5_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in5_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in6_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in6_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in6_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in6_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in7_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in7_min.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in7_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_in7_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp1_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp1_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp1_min.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_temp1_offset.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp1_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp2_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp2_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp2_min.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_temp2_offset.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp2_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp2_fault.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp3_input.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp3_max.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp3_min.dev_attr);
+ device_create_file(&client->dev,
+ &sensor_dev_attr_temp3_offset.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp3_alarm.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_temp3_fault.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_alarms_in.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_alarms_temp.dev_attr);
+ device_create_file(&client->dev, &sensor_dev_attr_faults_temp.dev_attr);
+ device_create_file(&client->dev, &dev_attr_cpu0_vid);
+ device_create_file(&client->dev, &dev_attr_vrm);
+
+ return 0;
+
+exit_detach:
+ i2c_detach_client(client);
+exit_free:
+ kfree(data);
+exit:
+ return err;
+}
+
+static int smsc47m192_detach_client(struct i2c_client *client)
+{
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ int err;
+
+ hwmon_device_unregister(data->class_dev);
+
+ if ((err = i2c_detach_client(client)))
+ return err;
+
+ kfree(data);
+
+ return 0;
+}
+
+static void smsc47m192_init_client(struct i2c_client *client)
+{
+ int i;
+ u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
+
+ if (!(config & 0x01)) {
+ u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
+
+ /* initialize alarm limits */
+ for (i=0; i<8; i++) {
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_IN_MIN(i), 0);
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_IN_MAX(i), 0xff);
+ }
+ for (i=0; i<3; i++) {
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_TEMP_MIN(i), 0x80);
+ i2c_smbus_write_byte_data(client,
+ SMSC47M192_REG_TEMP_MAX(i), 0x7f);
+ }
+
+ /* select cycle mode (pause 1 sec between updates) */
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
+ (sfr & 0xfd) | 0x02);
+
+ /* start monitoring */
+ i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG,
+ (config & 0xf7) | 0x01);
+
+ }
+
+}
+
+static struct smsc47m192_data *smsc47m192_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct smsc47m192_data *data = i2c_get_clientdata(client);
+ int i, config;
+ u16 alarms;
+
+ down(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+ || !data->valid) {
+ u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
+
+ dev_dbg(&client->dev, "Starting smsc47m192 update\n");
+
+ for (i = 0; i <= 7; i++) {
+ data->in[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_IN(i));
+ data->in_min[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_IN_MIN(i));
+ data->in_max[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_IN_MAX(i));
+ }
+ for (i = 0; i < 3; i++) {
+ data->temp[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_TEMP(i));
+ data->temp_max[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_TEMP_MAX(i));
+ data->temp_min[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_TEMP_MIN(i));
+ }
+ data->temp_offset[2] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_TEMP_OFFSET(3));
+ for (i = 1; i < 3; i++)
+ data->temp_offset[i] = i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_TEMP_OFFSET(i));
+ /* first offset is temp_offset[0] if SFR bit 4 is set,
+ temp_offset[1] otherwise */
+ if (sfr & 0x10) {
+ data->temp_offset[0] = data->temp_offset[1];
+ data->temp_offset[1] = 0;
+ } else
+ data->temp_offset[0] = 0;
+
+ data->vid = i2c_smbus_read_byte_data(client, SMSC47M192_REG_VID)
+ & 0x0f;
+ config = i2c_smbus_read_byte_data(client,SMSC47M192_REG_CONFIG);
+ if (config & 0x20)
+ data->vid |= (i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_VID4) & 0x01) << 4;
+ alarms = i2c_smbus_read_byte_data(client, SMSC47M192_REG_ALARM1)
+ + (i2c_smbus_read_byte_data(client,
+ SMSC47M192_REG_ALARM2) << 8);
+ data->raw_alarms = alarms;
+ data->alarm[0] = (alarms & 0x000f) + ((alarms & 0x0f00) >> 4);
+ data->alarm[1] = (alarms & 0x0070) >> 4;
+ data->alarm[2] = (alarms >> 13) & 6;
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ up(&data->update_lock);
+
+ return data;
+}
+
+static int __init smsc47m192_init(void)
+{
+ return i2c_add_driver(&smsc47m192_driver);
+}
+
+static void __exit smsc47m192_exit(void)
+{
+ i2c_del_driver(&smsc47m192_driver);
+}
+
+MODULE_AUTHOR("Hartmut Rick <linux at rick.claranet.de>");
+MODULE_DESCRIPTION("SMSC47M192 driver");
+MODULE_LICENSE("GPL");
+
+module_init(smsc47m192_init);
+module_exit(smsc47m192_exit);
