Merge ../linus

Conflicts: drivers/char/agp/Kconfig
author: Dave Jones <davej@redhat.com> 2006-06-29 16:01:54 -0400
committer: Dave Jones <davej@redhat.com> 2006-06-29 16:01:54 -0400
commit: 55b4d6a52195a8f277ffddf755ddaff359878f41 (patch)
tree: 06a3183a562f8da4688f65023f7a18dcad702956 /drivers/hwmon
parent: adf8a287150667feb5747f8beade62acacc17d4e (diff)
parent: 1f1332f727c3229eb2166a83fec5d3de6a73dce2 (diff)
20 files changed, 3862 insertions, 81 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 99cdc612d2c..0e31a0c496e 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1,5 +1,5 @@
 #
-# I2C Sensor chip drivers configuration
+# Hardware monitoring chip drivers configuration
 #
 
 menu "Hardware Monitoring support"
@@ -16,6 +16,10 @@ config HWMON
 	  should say Y here and also to the specific driver(s) for your
 	  sensors chip(s) below.
 
+	  To find out which specific driver(s) you need, use the
+	  sensors-detect script from the lm_sensors package.  Read
+	  <file:Documentation/hwmon/userspace-tools> for details.
+
 	  This support can also be built as a module.  If so, the module
 	  will be called hwmon.
 
@@ -23,6 +27,18 @@ config HWMON_VID
 	tristate
 	default n
 
+config SENSORS_ABITUGURU
+	tristate "Abit uGuru"
+	depends on HWMON && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the Abit uGuru chips
+	  sensor part. The voltage and frequency control parts of the Abit
+	  uGuru are not supported. The Abit uGuru chip can be found on Abit
+	  uGuru featuring motherboards (most modern Abit motherboards).
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called abituguru.
+
 config SENSORS_ADM1021
 	tristate "Analog Devices ADM1021 and compatibles"
 	depends on HWMON && I2C
@@ -188,6 +204,16 @@ config SENSORS_LM63
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm63.
 
+config SENSORS_LM70
+	tristate "National Semiconductor LM70"
+	depends on HWMON && SPI_MASTER && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the National Semiconductor
+	  LM70 digital temperature sensor chip.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called lm70.
+
 config SENSORS_LM75
 	tristate "National Semiconductor LM75 and compatibles"
 	depends on HWMON && I2C
@@ -236,11 +262,11 @@ config SENSORS_LM80
 	  will be called lm80.
 
 config SENSORS_LM83
-	tristate "National Semiconductor LM83"
+	tristate "National Semiconductor LM83 and compatibles"
 	depends on HWMON && I2C
 	help
 	  If you say yes here you get support for National Semiconductor
-	  LM83 sensor chips.
+	  LM82 and LM83 sensor chips.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm83.
@@ -333,11 +359,32 @@ config SENSORS_SMSC47M1
 	help
 	  If you say yes here you get support for the integrated fan
 	  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.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called 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
 	tristate "SMSC LPC47B397-NC"
 	depends on HWMON && I2C && EXPERIMENTAL
@@ -385,6 +432,16 @@ config SENSORS_W83781D
 	  This driver can also be built as a module.  If so, the module
 	  will be called w83781d.
 
+config SENSORS_W83791D
+	tristate "Winbond W83791D"
+	depends on HWMON && I2C && EXPERIMENTAL
+	select HWMON_VID
+	help
+	  If you say yes here you get support for the Winbond W83791D chip.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called w83791d.
+
 config SENSORS_W83792D
 	tristate "Winbond W83792D"
 	depends on HWMON && I2C && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index fbdb8d911a7..31415843a91 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -10,7 +10,9 @@ obj-$(CONFIG_SENSORS_ASB100)	+= asb100.o
 obj-$(CONFIG_SENSORS_W83627HF)	+= w83627hf.o
 obj-$(CONFIG_SENSORS_W83792D)	+= w83792d.o
 obj-$(CONFIG_SENSORS_W83781D)	+= w83781d.o
+obj-$(CONFIG_SENSORS_W83791D)	+= w83791d.o
 
+obj-$(CONFIG_SENSORS_ABITUGURU)	+= abituguru.o
 obj-$(CONFIG_SENSORS_ADM1021)	+= adm1021.o
 obj-$(CONFIG_SENSORS_ADM1025)	+= adm1025.o
 obj-$(CONFIG_SENSORS_ADM1026)	+= adm1026.o
@@ -26,6 +28,7 @@ obj-$(CONFIG_SENSORS_GL520SM)	+= gl520sm.o
 obj-$(CONFIG_SENSORS_HDAPS)	+= hdaps.o
 obj-$(CONFIG_SENSORS_IT87)	+= it87.o
 obj-$(CONFIG_SENSORS_LM63)	+= lm63.o
+obj-$(CONFIG_SENSORS_LM70)	+= lm70.o
 obj-$(CONFIG_SENSORS_LM75)	+= lm75.o
 obj-$(CONFIG_SENSORS_LM77)	+= lm77.o
 obj-$(CONFIG_SENSORS_LM78)	+= lm78.o
@@ -40,6 +43,7 @@ obj-$(CONFIG_SENSORS_PC87360)	+= pc87360.o
 obj-$(CONFIG_SENSORS_SIS5595)	+= sis5595.o
 obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
 obj-$(CONFIG_SENSORS_SMSC47M1)	+= smsc47m1.o
+obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
 obj-$(CONFIG_SENSORS_VIA686A)	+= via686a.o
 obj-$(CONFIG_SENSORS_VT8231)	+= vt8231.o
 obj-$(CONFIG_SENSORS_W83627EHF)	+= w83627ehf.o
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
new file mode 100644
index 00000000000..59122cc0a50
--- /dev/null
+++ b/drivers/hwmon/abituguru.c
@@ -0,0 +1,1415 @@
+/*
+    abituguru.c Copyright (c) 2005-2006 Hans de Goede <j.w.r.degoede@hhs.nl>
+
+    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.
+*/
+/*
+    This driver supports the sensor part of the custom Abit uGuru chip found
+    on Abit uGuru motherboards. Note: because of lack of specs the CPU / RAM /
+    etc voltage & frequency control is not supported!
+*/
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/mutex.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <asm/io.h>
+
+/* Banks */
+#define ABIT_UGURU_ALARM_BANK			0x20 /* 1x 3 bytes */
+#define ABIT_UGURU_SENSOR_BANK1			0x21 /* 16x volt and temp */
+#define ABIT_UGURU_FAN_PWM			0x24 /* 3x 5 bytes */
+#define ABIT_UGURU_SENSOR_BANK2			0x26 /* fans */
+/* max nr of sensors in bank1, a bank1 sensor can be in, temp or nc */
+#define ABIT_UGURU_MAX_BANK1_SENSORS		16
+/* Warning if you increase one of the 2 MAX defines below to 10 or higher you
+   should adjust the belonging _NAMES_LENGTH macro for the 2 digit number! */
+/* max nr of sensors in bank2, currently mb's with max 6 fans are known */
+#define ABIT_UGURU_MAX_BANK2_SENSORS		6
+/* max nr of pwm outputs, currently mb's with max 5 pwm outputs are known */
+#define ABIT_UGURU_MAX_PWMS			5
+/* uGuru sensor bank 1 flags */			     /* Alarm if: */
+#define ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE	0x01 /*  temp over warn */
+#define ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE	0x02 /*  volt over max */
+#define ABIT_UGURU_VOLT_LOW_ALARM_ENABLE	0x04 /*  volt under min */
+#define ABIT_UGURU_TEMP_HIGH_ALARM_FLAG		0x10 /* temp is over warn */
+#define ABIT_UGURU_VOLT_HIGH_ALARM_FLAG		0x20 /* volt is over max */
+#define ABIT_UGURU_VOLT_LOW_ALARM_FLAG		0x40 /* volt is under min */
+/* uGuru sensor bank 2 flags */			     /* Alarm if: */
+#define ABIT_UGURU_FAN_LOW_ALARM_ENABLE		0x01 /*   fan under min */
+/* uGuru sensor bank common flags */
+#define ABIT_UGURU_BEEP_ENABLE			0x08 /* beep if alarm */
+#define ABIT_UGURU_SHUTDOWN_ENABLE		0x80 /* shutdown if alarm */
+/* uGuru fan PWM (speed control) flags */
+#define ABIT_UGURU_FAN_PWM_ENABLE		0x80 /* enable speed control */
+/* Values used for conversion */
+#define ABIT_UGURU_FAN_MAX			15300 /* RPM */
+/* Bank1 sensor types */
+#define ABIT_UGURU_IN_SENSOR			0
+#define ABIT_UGURU_TEMP_SENSOR			1
+#define ABIT_UGURU_NC				2
+/* Timeouts / Retries, if these turn out to need a lot of fiddling we could
+   convert them to params. */
+/* 250 was determined by trial and error, 200 works most of the time, but not
+   always. I assume this is cpu-speed independent, since the ISA-bus and not
+   the CPU should be the bottleneck. Note that 250 sometimes is still not
+   enough (only reported on AN7 mb) this is handled by a higher layer. */
+#define ABIT_UGURU_WAIT_TIMEOUT			250
+/* Normally all expected status in abituguru_ready, are reported after the
+   first read, but sometimes not and we need to poll, 5 polls was not enough
+   50 sofar is. */
+#define ABIT_UGURU_READY_TIMEOUT		50
+/* Maximum 3 retries on timedout reads/writes, delay 200 ms before retrying */
+#define ABIT_UGURU_MAX_RETRIES			3
+#define ABIT_UGURU_RETRY_DELAY			(HZ/5)
+/* Maximum 2 timeouts in abituguru_update_device, iow 3 in a row is an error */
+#define ABIT_UGURU_MAX_TIMEOUTS			2
+/* utility macros */
+#define ABIT_UGURU_NAME				"abituguru"
+#define ABIT_UGURU_DEBUG(level, format, arg...)				\
+	if (level <= verbose)						\
+		printk(KERN_DEBUG ABIT_UGURU_NAME ": "	format , ## arg)
+/* Macros to help calculate the sysfs_names array length */
+/* sum of strlen of: in??_input\0, in??_{min,max}\0, in??_{min,max}_alarm\0,
+   in??_{min,max}_alarm_enable\0, in??_beep\0, in??_shutdown\0 */
+#define ABITUGURU_IN_NAMES_LENGTH	(11 + 2 * 9 + 2 * 15 + 2 * 22 + 10 + 14)
+/* sum of strlen of: temp??_input\0, temp??_max\0, temp??_crit\0,
+   temp??_alarm\0, temp??_alarm_enable\0, temp??_beep\0, temp??_shutdown\0 */
+#define ABITUGURU_TEMP_NAMES_LENGTH	(13 + 11 + 12 + 13 + 20 + 12 + 16)
+/* sum of strlen of: fan?_input\0, fan?_min\0, fan?_alarm\0,
+   fan?_alarm_enable\0, fan?_beep\0, fan?_shutdown\0 */
+#define ABITUGURU_FAN_NAMES_LENGTH	(11 + 9 + 11 + 18 + 10 + 14)
+/* sum of strlen of: pwm?_enable\0, pwm?_auto_channels_temp\0,
+   pwm?_auto_point{1,2}_pwm\0, pwm?_auto_point{1,2}_temp\0 */
+#define ABITUGURU_PWM_NAMES_LENGTH	(12 + 24 + 2 * 21 + 2 * 22)
+/* IN_NAMES_LENGTH > TEMP_NAMES_LENGTH so assume all bank1 sensors are in */
+#define ABITUGURU_SYSFS_NAMES_LENGTH	( \
+	ABIT_UGURU_MAX_BANK1_SENSORS * ABITUGURU_IN_NAMES_LENGTH + \
+	ABIT_UGURU_MAX_BANK2_SENSORS * ABITUGURU_FAN_NAMES_LENGTH + \
+	ABIT_UGURU_MAX_PWMS * ABITUGURU_PWM_NAMES_LENGTH)
+
+/* All the macros below are named identical to the oguru and oguru2 programs
+   reverse engineered by Olle Sandberg, hence the names might not be 100%
+   logical. I could come up with better names, but I prefer keeping the names
+   identical so that this driver can be compared with his work more easily. */
+/* Two i/o-ports are used by uGuru */
+#define ABIT_UGURU_BASE				0x00E0
+/* Used to tell uGuru what to read and to read the actual data */
+#define ABIT_UGURU_CMD				0x00
+/* Mostly used to check if uGuru is busy */
+#define ABIT_UGURU_DATA				0x04
+#define ABIT_UGURU_REGION_LENGTH		5
+/* uGuru status' */
+#define ABIT_UGURU_STATUS_WRITE			0x00 /* Ready to be written */
+#define ABIT_UGURU_STATUS_READ			0x01 /* Ready to be read */
+#define ABIT_UGURU_STATUS_INPUT			0x08 /* More input */
+#define ABIT_UGURU_STATUS_READY			0x09 /* Ready to be written */
+
+/* Constants */
+/* in (Volt) sensors go up to 3494 mV, temp to 255000 millidegrees Celsius */
+static const int abituguru_bank1_max_value[2] = { 3494, 255000 };
+/* Min / Max allowed values for sensor2 (fan) alarm threshold, these values
+   correspond to 300-3000 RPM */
+static const u8 abituguru_bank2_min_threshold = 5;
+static const u8 abituguru_bank2_max_threshold = 50;
+/* Register 0 is a bitfield, 1 and 2 are pwm settings (255 = 100%), 3 and 4
+   are temperature trip points. */
+static const int abituguru_pwm_settings_multiplier[5] = { 0, 1, 1, 1000, 1000 };
+/* Min / Max allowed values for pwm_settings. Note: pwm1 (CPU fan) is a
+   special case the minium allowed pwm% setting for this is 30% (77) on
+   some MB's this special case is handled in the code! */
+static const u8 abituguru_pwm_min[5] = { 0, 170, 170, 25, 25 };
+static const u8 abituguru_pwm_max[5] = { 0, 255, 255, 75, 75 };
+
+
+/* Insmod parameters */
+static int force;
+module_param(force, bool, 0);
+MODULE_PARM_DESC(force, "Set to one to force detection.");
+static int fan_sensors;
+module_param(fan_sensors, int, 0);
+MODULE_PARM_DESC(fan_sensors, "Number of fan sensors on the uGuru "
+	"(0 = autodetect)");
+static int pwms;
+module_param(pwms, int, 0);
+MODULE_PARM_DESC(pwms, "Number of PWMs on the uGuru "
+	"(0 = autodetect)");
+
+/* Default verbose is 2, since this driver is still in the testing phase */
+static int verbose = 2;
+module_param(verbose, int, 0644);
+MODULE_PARM_DESC(verbose, "How verbose should the driver be? (0-3):\n"
+	"   0 normal output\n"
+	"   1 + verbose error reporting\n"
+	"   2 + sensors type probing info\n"
+	"   3 + retryable error reporting");
+
+
+/* For the Abit uGuru, we need to keep some data in memory.
+   The structure is dynamically allocated, at the same time when a new
+   abituguru device is allocated. */
+struct abituguru_data {
+	struct class_device *class_dev; /* hwmon registered device */
+	struct mutex update_lock;	/* protect access to data and uGuru */
+	unsigned long last_updated;	/* In jiffies */
+	unsigned short addr;		/* uguru base address */
+	char uguru_ready;		/* is the uguru in ready state? */
+	unsigned char update_timeouts;	/* number of update timeouts since last
+					   successful update */
+
+	/* The sysfs attr and their names are generated automatically, for bank1
+	   we cannot use a predefined array because we don't know beforehand
+	   of a sensor is a volt or a temp sensor, for bank2 and the pwms its
+	   easier todo things the same way.  For in sensors we have 9 (temp 7)
+	   sysfs entries per sensor, for bank2 and pwms 6. */
+	struct sensor_device_attribute_2 sysfs_attr[
+		ABIT_UGURU_MAX_BANK1_SENSORS * 9 +
+		ABIT_UGURU_MAX_BANK2_SENSORS * 6 + ABIT_UGURU_MAX_PWMS * 6];
+	/* Buffer to store the dynamically generated sysfs names */
+	char sysfs_names[ABITUGURU_SYSFS_NAMES_LENGTH];
+
+	/* Bank 1 data */
+	/* number of and addresses of [0] in, [1] temp sensors */
+	u8 bank1_sensors[2];
+	u8 bank1_address[2][ABIT_UGURU_MAX_BANK1_SENSORS];
+	u8 bank1_value[ABIT_UGURU_MAX_BANK1_SENSORS];
+	/* This array holds 3 entries per sensor for the bank 1 sensor settings
+	   (flags, min, max for voltage / flags, warn, shutdown for temp). */
+	u8 bank1_settings[ABIT_UGURU_MAX_BANK1_SENSORS][3];
+	/* Maximum value for each sensor used for scaling in mV/millidegrees
+	   Celsius. */
+	int bank1_max_value[ABIT_UGURU_MAX_BANK1_SENSORS];
+
+	/* Bank 2 data, ABIT_UGURU_MAX_BANK2_SENSORS entries for bank2 */
+	u8 bank2_sensors; /* actual number of bank2 sensors found */
+	u8 bank2_value[ABIT_UGURU_MAX_BANK2_SENSORS];
+	u8 bank2_settings[ABIT_UGURU_MAX_BANK2_SENSORS][2]; /* flags, min */
+
+	/* Alarms 2 bytes for bank1, 1 byte for bank2 */
+	u8 alarms[3];
+
+	/* Fan PWM (speed control) 5 bytes per PWM */
+	u8 pwms; /* actual number of pwms found */
+	u8 pwm_settings[ABIT_UGURU_MAX_PWMS][5];
+};
+
+/* wait till the uguru is in the specified state */
+static int abituguru_wait(struct abituguru_data *data, u8 state)
+{
+	int timeout = ABIT_UGURU_WAIT_TIMEOUT;
+
+	while (inb_p(data->addr + ABIT_UGURU_DATA) != state) {
+		timeout--;
+		if (timeout == 0)
+			return -EBUSY;
+	}
+	return 0;
+}
+
+/* Put the uguru in ready for input state */
+static int abituguru_ready(struct abituguru_data *data)
+{
+	int timeout = ABIT_UGURU_READY_TIMEOUT;
+
+	if (data->uguru_ready)
+		return 0;
+
+	/* Reset? / Prepare for next read/write cycle */
+	outb(0x00, data->addr + ABIT_UGURU_DATA);
+
+	/* Wait till the uguru is ready */
+	if (abituguru_wait(data, ABIT_UGURU_STATUS_READY)) {
+		ABIT_UGURU_DEBUG(1,
+			"timeout exceeded waiting for ready state\n");
+		return -EIO;
+	}
+
+	/* Cmd port MUST be read now and should contain 0xAC */
+	while (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) {
+		timeout--;
+		if (timeout == 0) {
+			ABIT_UGURU_DEBUG(1,
+			   "CMD reg does not hold 0xAC after ready command\n");
+			return -EIO;
+		}
+	}
+
+	/* After this the ABIT_UGURU_DATA port should contain
+	   ABIT_UGURU_STATUS_INPUT */
+	timeout = ABIT_UGURU_READY_TIMEOUT;
+	while (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) {
+		timeout--;
+		if (timeout == 0) {
+			ABIT_UGURU_DEBUG(1,
+				"state != more input after ready command\n");
+			return -EIO;
+		}
+	}
+
+	data->uguru_ready = 1;
+	return 0;
+}
+
+/* Send the bank and then sensor address to the uGuru for the next read/write
+   cycle. This function gets called as the first part of a read/write by
+   abituguru_read and abituguru_write. This function should never be
+   called by any other function. */
+static int abituguru_send_address(struct abituguru_data *data,
+	u8 bank_addr, u8 sensor_addr, int retries)
+{
+	/* assume the caller does error handling itself if it has not requested
+	   any retries, and thus be quiet. */
+	int report_errors = retries;
+
+	for (;;) {
+		/* Make sure the uguru is ready and then send the bank address,
+		   after this the uguru is no longer "ready". */
+		if (abituguru_ready(data) != 0)
+			return -EIO;
+		outb(bank_addr, data->addr + ABIT_UGURU_DATA);
+		data->uguru_ready = 0;
+
+		/* Wait till the uguru is ABIT_UGURU_STATUS_INPUT state again
+		   and send the sensor addr */
+		if (abituguru_wait(data, ABIT_UGURU_STATUS_INPUT)) {
+			if (retries) {
+				ABIT_UGURU_DEBUG(3, "timeout exceeded "
+					"waiting for more input state, %d "
+					"tries remaining\n", retries);
+				set_current_state(TASK_UNINTERRUPTIBLE);
+				schedule_timeout(ABIT_UGURU_RETRY_DELAY);
+				retries--;
+				continue;
+			}
+			if (report_errors)
+				ABIT_UGURU_DEBUG(1, "timeout exceeded "
+					"waiting for more input state "
+					"(bank: %d)\n", (int)bank_addr);
+			return -EBUSY;
+		}
+		outb(sensor_addr, data->addr + ABIT_UGURU_CMD);
+		return 0;
+	}
+}
+
+/* Read count bytes from sensor sensor_addr in bank bank_addr and store the
+   result in buf, retry the send address part of the read retries times. */
+static int abituguru_read(struct abituguru_data *data,
+	u8 bank_addr, u8 sensor_addr, u8 *buf, int count, int retries)
+{
+	int i;
+
+	/* Send the address */
+	i = abituguru_send_address(data, bank_addr, sensor_addr, retries);
+	if (i)
+		return i;
+
+	/* And read the data */
+	for (i = 0; i < count; i++) {
+		if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) {
+			ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for "
+				"read state (bank: %d, sensor: %d)\n",
+				(int)bank_addr, (int)sensor_addr);
+			break;
+		}
+		buf[i] = inb(data->addr + ABIT_UGURU_CMD);
+	}
+
+	/* Last put the chip back in ready state */
+	abituguru_ready(data);
+
+	return i;
+}
+
+/* Write count bytes from buf to sensor sensor_addr in bank bank_addr, the send
+   address part of the write is always retried ABIT_UGURU_MAX_RETRIES times. */
+static int abituguru_write(struct abituguru_data *data,
+	u8 bank_addr, u8 sensor_addr, u8 *buf, int count)
+{
+	int i;
+
+	/* Send the address */
+	i = abituguru_send_address(data, bank_addr, sensor_addr,
+		ABIT_UGURU_MAX_RETRIES);
+	if (i)
+		return i;
+
+	/* And write the data */
+	for (i = 0; i < count; i++) {
+		if (abituguru_wait(data, ABIT_UGURU_STATUS_WRITE)) {
+			ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for "
+				"write state (bank: %d, sensor: %d)\n",
+				(int)bank_addr, (int)sensor_addr);
+			break;
+		}
+		outb(buf[i], data->addr + ABIT_UGURU_CMD);
+	}
+
+	/* Now we need to wait till the chip is ready to be read again,
+	   don't ask why */
+	if (abituguru_wait(data, ABIT_UGURU_STATUS_READ)) {
+		ABIT_UGURU_DEBUG(1, "timeout exceeded waiting for read state "
+			"after write (bank: %d, sensor: %d)\n", (int)bank_addr,
+			(int)sensor_addr);
+		return -EIO;
+	}
+
+	/* Cmd port MUST be read now and should contain 0xAC */
+	if (inb_p(data->addr + ABIT_UGURU_CMD) != 0xAC) {
+		ABIT_UGURU_DEBUG(1, "CMD reg does not hold 0xAC after write "
+			"(bank: %d, sensor: %d)\n", (int)bank_addr,
+			(int)sensor_addr);
+		return -EIO;
+	}
+
+	/* Last put the chip back in ready state */
+	abituguru_ready(data);
+
+	return i;
+}
+
+/* Detect sensor type. Temp and Volt sensors are enabled with
+   different masks and will ignore enable masks not meant for them.
+   This enables us to test what kind of sensor we're dealing with.
+   By setting the alarm thresholds so that we will always get an
+   alarm for sensor type X and then enabling the sensor as sensor type
+   X, if we then get an alarm it is a sensor of type X. */
+static int __devinit
+abituguru_detect_bank1_sensor_type(struct abituguru_data *data,
+				   u8 sensor_addr)
+{
+	u8 val, buf[3];
+	int ret = ABIT_UGURU_NC;
+
+	/* First read the sensor and the current settings */
+	if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, sensor_addr, &val,
+			1, ABIT_UGURU_MAX_RETRIES) != 1)
+		return -ENODEV;
+
+	/* Test val is sane / usable for sensor type detection. */
+	if ((val < 10u) || (val > 240u)) {
+		printk(KERN_WARNING ABIT_UGURU_NAME
+			": bank1-sensor: %d reading (%d) too close to limits, "
+			"unable to determine sensor type, skipping sensor\n",
+			(int)sensor_addr, (int)val);
+		/* assume no sensor is there for sensors for which we can't
+		   determine the sensor type because their reading is too close
+		   to their limits, this usually means no sensor is there. */
+		return ABIT_UGURU_NC;
+	}
+
+	ABIT_UGURU_DEBUG(2, "testing bank1 sensor %d\n", (int)sensor_addr);
+	/* Volt sensor test, enable volt low alarm, set min value ridicously
+	   high. If its a volt sensor this should always give us an alarm. */
+	buf[0] = ABIT_UGURU_VOLT_LOW_ALARM_ENABLE;
+	buf[1] = 245;
+	buf[2] = 250;
+	if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr,
+			buf, 3) != 3)
+		return -ENODEV;
+	/* Now we need 20 ms to give the uguru time to read the sensors
+	   and raise a voltage alarm */
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	schedule_timeout(HZ/50);
+	/* Check for alarm and check the alarm is a volt low alarm. */
+	if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3,
+			ABIT_UGURU_MAX_RETRIES) != 3)
+		return -ENODEV;
+	if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) {
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1,
+				sensor_addr, buf, 3,
+				ABIT_UGURU_MAX_RETRIES) != 3)
+			return -ENODEV;
+		if (buf[0] & ABIT_UGURU_VOLT_LOW_ALARM_FLAG) {
+			/* Restore original settings */
+			if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2,
+					sensor_addr,
+					data->bank1_settings[sensor_addr],
+					3) != 3)
+				return -ENODEV;
+			ABIT_UGURU_DEBUG(2, "  found volt sensor\n");
+			return ABIT_UGURU_IN_SENSOR;
+		} else
+			ABIT_UGURU_DEBUG(2, "  alarm raised during volt "
+				"sensor test, but volt low flag not set\n");
+	} else
+		ABIT_UGURU_DEBUG(2, "  alarm not raised during volt sensor "
+			"test\n");
+
+	/* Temp sensor test, enable sensor as a temp sensor, set beep value
+	   ridicously low (but not too low, otherwise uguru ignores it).
+	   If its a temp sensor this should always give us an alarm. */
+	buf[0] = ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE;
+	buf[1] = 5;
+	buf[2] = 10;
+	if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr,
+			buf, 3) != 3)
+		return -ENODEV;
+	/* Now we need 50 ms to give the uguru time to read the sensors
+	   and raise a temp alarm */
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	schedule_timeout(HZ/20);
+	/* Check for alarm and check the alarm is a temp high alarm. */
+	if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0, buf, 3,
+			ABIT_UGURU_MAX_RETRIES) != 3)
+		return -ENODEV;
+	if (buf[sensor_addr/8] & (0x01 << (sensor_addr % 8))) {
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1 + 1,
+				sensor_addr, buf, 3,
+				ABIT_UGURU_MAX_RETRIES) != 3)
+			return -ENODEV;
+		if (buf[0] & ABIT_UGURU_TEMP_HIGH_ALARM_FLAG) {
+			ret = ABIT_UGURU_TEMP_SENSOR;
+			ABIT_UGURU_DEBUG(2, "  found temp sensor\n");
+		} else
+			ABIT_UGURU_DEBUG(2, "  alarm raised during temp "
+				"sensor test, but temp high flag not set\n");
+	} else
+		ABIT_UGURU_DEBUG(2, "  alarm not raised during temp sensor "
+			"test\n");
+
+	/* Restore original settings */
+	if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2, sensor_addr,
+			data->bank1_settings[sensor_addr], 3) != 3)
+		return -ENODEV;
+
+	return ret;
+}
+
+/* These functions try to find out how many sensors there are in bank2 and how
+   many pwms there are. The purpose of this is to make sure that we don't give
+   the user the possibility to change settings for non-existent sensors / pwm.
+   The uGuru will happily read / write whatever memory happens to be after the
+   memory storing the PWM settings when reading/writing to a PWM which is not
+   there. Notice even if we detect a PWM which doesn't exist we normally won't
+   write to it, unless the user tries to change the settings.
+
+   Although the uGuru allows reading (settings) from non existing bank2
+   sensors, my version of the uGuru does seem to stop writing to them, the
+   write function above aborts in this case with:
+   "CMD reg does not hold 0xAC after write"
+
+   Notice these 2 tests are non destructive iow read-only tests, otherwise
+   they would defeat their purpose. Although for the bank2_sensors detection a
+   read/write test would be feasible because of the reaction above, I've
+   however opted to stay on the safe side. */
+static void __devinit
+abituguru_detect_no_bank2_sensors(struct abituguru_data *data)
+{
+	int i;
+
+	if (fan_sensors) {
+		data->bank2_sensors = fan_sensors;
+		ABIT_UGURU_DEBUG(2, "assuming %d fan sensors because of "
+			"\"fan_sensors\" module param\n",
+			(int)data->bank2_sensors);
+		return;
+	}
+
+	ABIT_UGURU_DEBUG(2, "detecting number of fan sensors\n");
+	for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) {
+		/* 0x89 are the known used bits:
+		   -0x80 enable shutdown
+		   -0x08 enable beep
+		   -0x01 enable alarm
+		   All other bits should be 0, but on some motherboards
+		   0x40 (bit 6) is also high for some of the fans?? */
+		if (data->bank2_settings[i][0] & ~0xC9) {
+			ABIT_UGURU_DEBUG(2, "  bank2 sensor %d does not seem "
+				"to be a fan sensor: settings[0] = %02X\n",
+				i, (unsigned int)data->bank2_settings[i][0]);
+			break;
+		}
+
+		/* check if the threshold is within the allowed range */
+		if (data->bank2_settings[i][1] <
+				abituguru_bank2_min_threshold) {
+			ABIT_UGURU_DEBUG(2, "  bank2 sensor %d does not seem "
+				"to be a fan sensor: the threshold (%d) is "
+				"below the minimum (%d)\n", i,
+				(int)data->bank2_settings[i][1],
+				(int)abituguru_bank2_min_threshold);
+			break;
+		}
+		if (data->bank2_settings[i][1] >
+				abituguru_bank2_max_threshold) {
+			ABIT_UGURU_DEBUG(2, "  bank2 sensor %d does not seem "
+				"to be a fan sensor: the threshold (%d) is "
+				"above the maximum (%d)\n", i,
+				(int)data->bank2_settings[i][1],
+				(int)abituguru_bank2_max_threshold);
+			break;
+		}
+	}
+
+	data->bank2_sensors = i;
+	ABIT_UGURU_DEBUG(2, " found: %d fan sensors\n",
+		(int)data->bank2_sensors);
+}
+
+static void __devinit
+abituguru_detect_no_pwms(struct abituguru_data *data)
+{
+	int i, j;
+
+	if (pwms) {
+		data->pwms = pwms;
+		ABIT_UGURU_DEBUG(2, "assuming %d PWM outputs because of "
+			"\"pwms\" module param\n", (int)data->pwms);
+		return;
+	}
+
+	ABIT_UGURU_DEBUG(2, "detecting number of PWM outputs\n");
+	for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) {
+		/* 0x80 is the enable bit and the low
+		   nibble is which temp sensor to use,
+		   the other bits should be 0 */
+		if (data->pwm_settings[i][0] & ~0x8F) {
+			ABIT_UGURU_DEBUG(2, "  pwm channel %d does not seem "
+				"to be a pwm channel: settings[0] = %02X\n",
+				i, (unsigned int)data->pwm_settings[i][0]);
+			break;
+		}
+
+		/* the low nibble must correspond to one of the temp sensors
+		   we've found */
+		for (j = 0; j < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR];
+				j++) {
+			if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][j] ==
+					(data->pwm_settings[i][0] & 0x0F))
+				break;
+		}
+		if (j == data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) {
+			ABIT_UGURU_DEBUG(2, "  pwm channel %d does not seem "
+				"to be a pwm channel: %d is not a valid temp "
+				"sensor address\n", i,
+				data->pwm_settings[i][0] & 0x0F);
+			break;
+		}
+
+		/* check if all other settings are within the allowed range */
+		for (j = 1; j < 5; j++) {
+			u8 min;
+			/* special case pwm1 min pwm% */
+			if ((i == 0) && ((j == 1) || (j == 2)))
+				min = 77;
+			else
+				min = abituguru_pwm_min[j];
+			if (data->pwm_settings[i][j] < min) {
+				ABIT_UGURU_DEBUG(2, "  pwm channel %d does "
+					"not seem to be a pwm channel: "
+					"setting %d (%d) is below the minimum "
+					"value (%d)\n", i, j,
+					(int)data->pwm_settings[i][j],
+					(int)min);
+				goto abituguru_detect_no_pwms_exit;
+			}
+			if (data->pwm_settings[i][j] > abituguru_pwm_max[j]) {
+				ABIT_UGURU_DEBUG(2, "  pwm channel %d does "
+					"not seem to be a pwm channel: "
+					"setting %d (%d) is above the maximum "
+					"value (%d)\n", i, j,
+					(int)data->pwm_settings[i][j],
+					(int)abituguru_pwm_max[j]);
+				goto abituguru_detect_no_pwms_exit;
+			}
+		}
+
+		/* check that min temp < max temp and min pwm < max pwm */
+		if (data->pwm_settings[i][1] >= data->pwm_settings[i][2]) {
+			ABIT_UGURU_DEBUG(2, "  pwm channel %d does not seem "
+				"to be a pwm channel: min pwm (%d) >= "
+				"max pwm (%d)\n", i,
+				(int)data->pwm_settings[i][1],
+				(int)data->pwm_settings[i][2]);
+			break;
+		}
+		if (data->pwm_settings[i][3] >= data->pwm_settings[i][4]) {
+			ABIT_UGURU_DEBUG(2, "  pwm channel %d does not seem "
+				"to be a pwm channel: min temp (%d) >= "
+				"max temp (%d)\n", i,
+				(int)data->pwm_settings[i][3],
+				(int)data->pwm_settings[i][4]);
+			break;
+		}
+	}
+
+abituguru_detect_no_pwms_exit:
+	data->pwms = i;
+	ABIT_UGURU_DEBUG(2, " found: %d PWM outputs\n", (int)data->pwms);
+}
+
+/* Following are the sysfs callback functions. These functions expect:
+   sensor_device_attribute_2->index:   sensor address/offset in the bank
+   sensor_device_attribute_2->nr:      register offset, bitmask or NA. */
+static struct abituguru_data *abituguru_update_device(struct device *dev);
+
+static ssize_t show_bank1_value(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = abituguru_update_device(dev);
+	if (!data)
+		return -EIO;
+	return sprintf(buf, "%d\n", (data->bank1_value[attr->index] *
+		data->bank1_max_value[attr->index] + 128) / 255);
+}
+
+static ssize_t show_bank1_setting(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	return sprintf(buf, "%d\n",
+		(data->bank1_settings[attr->index][attr->nr] *
+		data->bank1_max_value[attr->index] + 128) / 255);
+}
+
+static ssize_t show_bank2_value(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = abituguru_update_device(dev);
+	if (!data)
+		return -EIO;
+	return sprintf(buf, "%d\n", (data->bank2_value[attr->index] *
+		ABIT_UGURU_FAN_MAX + 128) / 255);
+}
+
+static ssize_t show_bank2_setting(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	return sprintf(buf, "%d\n",
+		(data->bank2_settings[attr->index][attr->nr] *
+		ABIT_UGURU_FAN_MAX + 128) / 255);
+}
+
+static ssize_t store_bank1_setting(struct device *dev, struct device_attribute
+	*devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	u8 val = (simple_strtoul(buf, NULL, 10) * 255 +
+		data->bank1_max_value[attr->index]/2) /
+		data->bank1_max_value[attr->index];
+	ssize_t ret = count;
+
+	mutex_lock(&data->update_lock);
+	if (data->bank1_settings[attr->index][attr->nr] != val) {
+		u8 orig_val = data->bank1_settings[attr->index][attr->nr];
+		data->bank1_settings[attr->index][attr->nr] = val;
+		if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK1 + 2,
+				attr->index, data->bank1_settings[attr->index],
+				3) <= attr->nr) {
+			data->bank1_settings[attr->index][attr->nr] = orig_val;
+			ret = -EIO;
+		}
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t store_bank2_setting(struct device *dev, struct device_attribute
+	*devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	u8 val = (simple_strtoul(buf, NULL, 10)*255 + ABIT_UGURU_FAN_MAX/2) /
+		ABIT_UGURU_FAN_MAX;
+	ssize_t ret = count;
+
+	/* this check can be done before taking the lock */
+	if ((val < abituguru_bank2_min_threshold) ||
+			(val > abituguru_bank2_max_threshold))
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	if (data->bank2_settings[attr->index][attr->nr] != val) {
+		u8 orig_val = data->bank2_settings[attr->index][attr->nr];
+		data->bank2_settings[attr->index][attr->nr] = val;
+		if (abituguru_write(data, ABIT_UGURU_SENSOR_BANK2 + 2,
+				attr->index, data->bank2_settings[attr->index],
+				2) <= attr->nr) {
+			data->bank2_settings[attr->index][attr->nr] = orig_val;
+			ret = -EIO;
+		}
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t show_bank1_alarm(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = abituguru_update_device(dev);
+	if (!data)
+		return -EIO;
+	/* See if the alarm bit for this sensor is set, and if the
+	   alarm matches the type of alarm we're looking for (for volt
+	   it can be either low or high). The type is stored in a few
+	   readonly bits in the settings part of the relevant sensor.
+	   The bitmask of the type is passed to us in attr->nr. */
+	if ((data->alarms[attr->index / 8] & (0x01 << (attr->index % 8))) &&
+			(data->bank1_settings[attr->index][0] & attr->nr))
+		return sprintf(buf, "1\n");
+	else
+		return sprintf(buf, "0\n");
+}
+
+static ssize_t show_bank2_alarm(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = abituguru_update_device(dev);
+	if (!data)
+		return -EIO;
+	if (data->alarms[2] & (0x01 << attr->index))
+		return sprintf(buf, "1\n");
+	else
+		return sprintf(buf, "0\n");
+}
+
+static ssize_t show_bank1_mask(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	if (data->bank1_settings[attr->index][0] & attr->nr)
+		return sprintf(buf, "1\n");
+	else
+		return sprintf(buf, "0\n");
+}
+
+static ssize_t show_bank2_mask(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	if (data->bank2_settings[attr->index][0] & attr->nr)
+		return sprintf(buf, "1\n");
+	else
+		return sprintf(buf, "0\n");
+}
+
+static ssize_t store_bank1_mask(struct device *dev,
+	struct device_attribute *devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	int mask = simple_strtoul(buf, NULL, 10);
+	ssize_t ret = count;
+	u8 orig_val;
+
+	mutex_lock(&data->update_lock);
+	orig_val = data->bank1_settings[attr->index][0];
+
+	if (mask)
+		data->bank1_settings[attr->index][0] |= attr->nr;
+	else
+		data->bank1_settings[attr->index][0] &= ~attr->nr;
+
+	if ((data->bank1_settings[attr->index][0] != orig_val) &&
+			(abituguru_write(data,
+			ABIT_UGURU_SENSOR_BANK1 + 2, attr->index,
+			data->bank1_settings[attr->index], 3) < 1)) {
+		data->bank1_settings[attr->index][0] = orig_val;
+		ret = -EIO;
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t store_bank2_mask(struct device *dev,
+	struct device_attribute *devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	int mask = simple_strtoul(buf, NULL, 10);
+	ssize_t ret = count;
+	u8 orig_val;
+
+	mutex_lock(&data->update_lock);
+	orig_val = data->bank2_settings[attr->index][0];
+
+	if (mask)
+		data->bank2_settings[attr->index][0] |= attr->nr;
+	else
+		data->bank2_settings[attr->index][0] &= ~attr->nr;
+
+	if ((data->bank2_settings[attr->index][0] != orig_val) &&
+			(abituguru_write(data,
+			ABIT_UGURU_SENSOR_BANK2 + 2, attr->index,
+			data->bank2_settings[attr->index], 2) < 1)) {
+		data->bank2_settings[attr->index][0] = orig_val;
+		ret = -EIO;
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+/* Fan PWM (speed control) */
+static ssize_t show_pwm_setting(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	return sprintf(buf, "%d\n", data->pwm_settings[attr->index][attr->nr] *
+		abituguru_pwm_settings_multiplier[attr->nr]);
+}
+
+static ssize_t store_pwm_setting(struct device *dev, struct device_attribute
+	*devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	u8 min, val = (simple_strtoul(buf, NULL, 10) +
+		abituguru_pwm_settings_multiplier[attr->nr]/2) /
+		abituguru_pwm_settings_multiplier[attr->nr];
+	ssize_t ret = count;
+
+	/* special case pwm1 min pwm% */
+	if ((attr->index == 0) && ((attr->nr == 1) || (attr->nr == 2)))
+		min = 77;
+	else
+		min = abituguru_pwm_min[attr->nr];
+
+	/* this check can be done before taking the lock */
+	if ((val < min) || (val > abituguru_pwm_max[attr->nr]))
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	/* this check needs to be done after taking the lock */
+	if ((attr->nr & 1) &&
+			(val >= data->pwm_settings[attr->index][attr->nr + 1]))
+		ret = -EINVAL;
+	else if (!(attr->nr & 1) &&
+			(val <= data->pwm_settings[attr->index][attr->nr - 1]))
+		ret = -EINVAL;
+	else if (data->pwm_settings[attr->index][attr->nr] != val) {
+		u8 orig_val = data->pwm_settings[attr->index][attr->nr];
+		data->pwm_settings[attr->index][attr->nr] = val;
+		if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1,
+				attr->index, data->pwm_settings[attr->index],
+				5) <= attr->nr) {
+			data->pwm_settings[attr->index][attr->nr] =
+				orig_val;
+			ret = -EIO;
+		}
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t show_pwm_sensor(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	int i;
+	/* We need to walk to the temp sensor addresses to find what
+	   the userspace id of the configured temp sensor is. */
+	for (i = 0; i < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]; i++)
+		if (data->bank1_address[ABIT_UGURU_TEMP_SENSOR][i] ==
+				(data->pwm_settings[attr->index][0] & 0x0F))
+			return sprintf(buf, "%d\n", i+1);
+
+	return -ENXIO;
+}
+
+static ssize_t store_pwm_sensor(struct device *dev, struct device_attribute
+	*devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	unsigned long val = simple_strtoul(buf, NULL, 10) - 1;
+	ssize_t ret = count;
+
+	mutex_lock(&data->update_lock);
+	if (val < data->bank1_sensors[ABIT_UGURU_TEMP_SENSOR]) {
+		u8 orig_val = data->pwm_settings[attr->index][0];
+		u8 address = data->bank1_address[ABIT_UGURU_TEMP_SENSOR][val];
+		data->pwm_settings[attr->index][0] &= 0xF0;
+		data->pwm_settings[attr->index][0] |= address;
+		if (data->pwm_settings[attr->index][0] != orig_val) {
+			if (abituguru_write(data, ABIT_UGURU_FAN_PWM + 1,
+					attr->index,
+					data->pwm_settings[attr->index],
+					5) < 1) {
+				data->pwm_settings[attr->index][0] = orig_val;
+				ret = -EIO;
+			}
+		}
+	}
+	else
+		ret = -EINVAL;
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t show_pwm_enable(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	int res = 0;
+	if (data->pwm_settings[attr->index][0] & ABIT_UGURU_FAN_PWM_ENABLE)
+		res = 2;
+	return sprintf(buf, "%d\n", res);
+}
+
+static ssize_t store_pwm_enable(struct device *dev, struct device_attribute
+	*devattr, const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	u8 orig_val, user_val = simple_strtoul(buf, NULL, 10);
+	ssize_t ret = count;
+
+	mutex_lock(&data->update_lock);
+	orig_val = data->pwm_settings[attr->index][0];
+	switch (user_val) {
+		case 0:
+			data->pwm_settings[attr->index][0] &=
+				~ABIT_UGURU_FAN_PWM_ENABLE;
+			break;
+		case 2:
+			data->pwm_settings[attr->index][0] |=
+				ABIT_UGURU_FAN_PWM_ENABLE;
+			break;
+		default:
+			ret = -EINVAL;
+	}
+	if ((data->pwm_settings[attr->index][0] != orig_val) &&
+			(abituguru_write(data, ABIT_UGURU_FAN_PWM + 1,
+			attr->index, data->pwm_settings[attr->index],
+			5) < 1)) {
+		data->pwm_settings[attr->index][0] = orig_val;
+		ret = -EIO;
+	}
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static ssize_t show_name(struct device *dev,
+	struct device_attribute *devattr, char *buf)
+{
+	return sprintf(buf, "%s\n", ABIT_UGURU_NAME);
+}
+
+/* Sysfs attr templates, the real entries are generated automatically. */
+static const
+struct sensor_device_attribute_2 abituguru_sysfs_bank1_templ[2][9] = {
+	{
+	SENSOR_ATTR_2(in%d_input, 0444, show_bank1_value, NULL, 0, 0),
+	SENSOR_ATTR_2(in%d_min, 0644, show_bank1_setting,
+		store_bank1_setting, 1, 0),
+	SENSOR_ATTR_2(in%d_min_alarm, 0444, show_bank1_alarm, NULL,
+		ABIT_UGURU_VOLT_LOW_ALARM_FLAG, 0),
+	SENSOR_ATTR_2(in%d_max, 0644, show_bank1_setting,
+		store_bank1_setting, 2, 0),
+	SENSOR_ATTR_2(in%d_max_alarm, 0444, show_bank1_alarm, NULL,
+		ABIT_UGURU_VOLT_HIGH_ALARM_FLAG, 0),
+	SENSOR_ATTR_2(in%d_beep, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0),
+	SENSOR_ATTR_2(in%d_shutdown, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
+	SENSOR_ATTR_2(in%d_min_alarm_enable, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_VOLT_LOW_ALARM_ENABLE, 0),
+	SENSOR_ATTR_2(in%d_max_alarm_enable, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_VOLT_HIGH_ALARM_ENABLE, 0),
+	}, {
+	SENSOR_ATTR_2(temp%d_input, 0444, show_bank1_value, NULL, 0, 0),
+	SENSOR_ATTR_2(temp%d_alarm, 0444, show_bank1_alarm, NULL,
+		ABIT_UGURU_TEMP_HIGH_ALARM_FLAG, 0),
+	SENSOR_ATTR_2(temp%d_max, 0644, show_bank1_setting,
+		store_bank1_setting, 1, 0),
+	SENSOR_ATTR_2(temp%d_crit, 0644, show_bank1_setting,
+		store_bank1_setting, 2, 0),
+	SENSOR_ATTR_2(temp%d_beep, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_BEEP_ENABLE, 0),
+	SENSOR_ATTR_2(temp%d_shutdown, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
+	SENSOR_ATTR_2(temp%d_alarm_enable, 0644, show_bank1_mask,
+		store_bank1_mask, ABIT_UGURU_TEMP_HIGH_ALARM_ENABLE, 0),
+	}
+};
+
+static const struct sensor_device_attribute_2 abituguru_sysfs_fan_templ[6] = {
+	SENSOR_ATTR_2(fan%d_input, 0444, show_bank2_value, NULL, 0, 0),
+	SENSOR_ATTR_2(fan%d_alarm, 0444, show_bank2_alarm, NULL, 0, 0),
+	SENSOR_ATTR_2(fan%d_min, 0644, show_bank2_setting,
+		store_bank2_setting, 1, 0),
+	SENSOR_ATTR_2(fan%d_beep, 0644, show_bank2_mask,
+		store_bank2_mask, ABIT_UGURU_BEEP_ENABLE, 0),
+	SENSOR_ATTR_2(fan%d_shutdown, 0644, show_bank2_mask,
+		store_bank2_mask, ABIT_UGURU_SHUTDOWN_ENABLE, 0),
+	SENSOR_ATTR_2(fan%d_alarm_enable, 0644, show_bank2_mask,
+		store_bank2_mask, ABIT_UGURU_FAN_LOW_ALARM_ENABLE, 0),
+};
+
+static const struct sensor_device_attribute_2 abituguru_sysfs_pwm_templ[6] = {
+	SENSOR_ATTR_2(pwm%d_enable, 0644, show_pwm_enable,
+		store_pwm_enable, 0, 0),
+	SENSOR_ATTR_2(pwm%d_auto_channels_temp, 0644, show_pwm_sensor,
+		store_pwm_sensor, 0, 0),
+	SENSOR_ATTR_2(pwm%d_auto_point1_pwm, 0644, show_pwm_setting,
+		store_pwm_setting, 1, 0),
+	SENSOR_ATTR_2(pwm%d_auto_point2_pwm, 0644, show_pwm_setting,
+		store_pwm_setting, 2, 0),
+	SENSOR_ATTR_2(pwm%d_auto_point1_temp, 0644, show_pwm_setting,
+		store_pwm_setting, 3, 0),
+	SENSOR_ATTR_2(pwm%d_auto_point2_temp, 0644, show_pwm_setting,
+		store_pwm_setting, 4, 0),
+};
+
+static struct sensor_device_attribute_2 abituguru_sysfs_attr[] = {
+	SENSOR_ATTR_2(name, 0444, show_name, NULL, 0, 0),
+};
+
+static int __devinit abituguru_probe(struct platform_device *pdev)
+{
+	struct abituguru_data *data;
+	int i, j, used, sysfs_names_free, sysfs_attr_i, res = -ENODEV;
+	char *sysfs_filename;
+
+	/* El weirdo probe order, to keep the sysfs order identical to the
+	   BIOS and window-appliction listing order. */
+	const u8 probe_order[ABIT_UGURU_MAX_BANK1_SENSORS] = {
+		0x00, 0x01, 0x03, 0x04, 0x0A, 0x08, 0x0E, 0x02,
+		0x09, 0x06, 0x05, 0x0B, 0x0F, 0x0D, 0x07, 0x0C };
+
+	if (!(data = kzalloc(sizeof(struct abituguru_data), GFP_KERNEL)))
+		return -ENOMEM;
+
+	data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
+	mutex_init(&data->update_lock);
+	platform_set_drvdata(pdev, data);
+
+	/* See if the uGuru is ready */
+	if (inb_p(data->addr + ABIT_UGURU_DATA) == ABIT_UGURU_STATUS_INPUT)
+		data->uguru_ready = 1;
+
+	/* Completely read the uGuru this has 2 purposes:
+	   - testread / see if one really is there.
+	   - make an in memory copy of all the uguru settings for future use. */
+	if (abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0,
+			data->alarms, 3, ABIT_UGURU_MAX_RETRIES) != 3)
+		goto abituguru_probe_error;
+
+	for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1, i,
+				&data->bank1_value[i], 1,
+				ABIT_UGURU_MAX_RETRIES) != 1)
+			goto abituguru_probe_error;
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK1+1, i,
+				data->bank1_settings[i], 3,
+				ABIT_UGURU_MAX_RETRIES) != 3)
+			goto abituguru_probe_error;
+	}
+	/* Note: We don't know how many bank2 sensors / pwms there really are,
+	   but in order to "detect" this we need to read the maximum amount
+	   anyways. If we read sensors/pwms not there we'll just read crap
+	   this can't hurt. We need the detection because we don't want
+	   unwanted writes, which will hurt! */
+	for (i = 0; i < ABIT_UGURU_MAX_BANK2_SENSORS; i++) {
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2, i,
+				&data->bank2_value[i], 1,
+				ABIT_UGURU_MAX_RETRIES) != 1)
+			goto abituguru_probe_error;
+		if (abituguru_read(data, ABIT_UGURU_SENSOR_BANK2+1, i,
+				data->bank2_settings[i], 2,
+				ABIT_UGURU_MAX_RETRIES) != 2)
+			goto abituguru_probe_error;
+	}
+	for (i = 0; i < ABIT_UGURU_MAX_PWMS; i++) {
+		if (abituguru_read(data, ABIT_UGURU_FAN_PWM, i,
+				data->pwm_settings[i], 5,
+				ABIT_UGURU_MAX_RETRIES) != 5)
+			goto abituguru_probe_error;
+	}
+	data->last_updated = jiffies;
+
+	/* Detect sensor types and fill the sysfs attr for bank1 */
+	sysfs_attr_i = 0;
+	sysfs_filename = data->sysfs_names;
+	sysfs_names_free = ABITUGURU_SYSFS_NAMES_LENGTH;
+	for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
+		res = abituguru_detect_bank1_sensor_type(data, probe_order[i]);
+		if (res < 0)
+			goto abituguru_probe_error;
+		if (res == ABIT_UGURU_NC)
+			continue;
+
+		/* res 1 (temp) sensors have 7 sysfs entries, 0 (in) 9 */
+		for (j = 0; j < (res ? 7 : 9); j++) {
+			used = snprintf(sysfs_filename, sysfs_names_free,
+				abituguru_sysfs_bank1_templ[res][j].dev_attr.
+				attr.name, data->bank1_sensors[res] + res)
+				+ 1;
+			data->sysfs_attr[sysfs_attr_i] =
+				abituguru_sysfs_bank1_templ[res][j];
+			data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
+				sysfs_filename;
+			data->sysfs_attr[sysfs_attr_i].index = probe_order[i];
+			sysfs_filename += used;
+			sysfs_names_free -= used;
+			sysfs_attr_i++;
+		}
+		data->bank1_max_value[probe_order[i]] =
+			abituguru_bank1_max_value[res];
+		data->bank1_address[res][data->bank1_sensors[res]] =
+			probe_order[i];
+		data->bank1_sensors[res]++;
+	}
+	/* Detect number of sensors and fill the sysfs attr for bank2 (fans) */
+	abituguru_detect_no_bank2_sensors(data);
+	for (i = 0; i < data->bank2_sensors; i++) {
+		for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_fan_templ); j++) {
+			used = snprintf(sysfs_filename, sysfs_names_free,
+				abituguru_sysfs_fan_templ[j].dev_attr.attr.name,
+				i + 1) + 1;
+			data->sysfs_attr[sysfs_attr_i] =
+				abituguru_sysfs_fan_templ[j];
+			data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
+				sysfs_filename;
+			data->sysfs_attr[sysfs_attr_i].index = i;
+			sysfs_filename += used;
+			sysfs_names_free -= used;
+			sysfs_attr_i++;
+		}
+	}
+	/* Detect number of sensors and fill the sysfs attr for pwms */
+	abituguru_detect_no_pwms(data);
+	for (i = 0; i < data->pwms; i++) {
+		for (j = 0; j < ARRAY_SIZE(abituguru_sysfs_pwm_templ); j++) {
+			used = snprintf(sysfs_filename, sysfs_names_free,
+				abituguru_sysfs_pwm_templ[j].dev_attr.attr.name,
+				i + 1) + 1;
+			data->sysfs_attr[sysfs_attr_i] =
+				abituguru_sysfs_pwm_templ[j];
+			data->sysfs_attr[sysfs_attr_i].dev_attr.attr.name =
+				sysfs_filename;
+			data->sysfs_attr[sysfs_attr_i].index = i;
+			sysfs_filename += used;
+			sysfs_names_free -= used;
+			sysfs_attr_i++;
+		}
+	}
+	/* Fail safe check, this should never happen! */
+	if (sysfs_names_free < 0) {
+		printk(KERN_ERR ABIT_UGURU_NAME ": Fatal error ran out of "
+		       "space for sysfs attr names. This should never "
+		       "happen please report to the abituguru maintainer "
+		       "(see MAINTAINERS)\n");
+		res = -ENAMETOOLONG;
+		goto abituguru_probe_error;
+	}
+	printk(KERN_INFO ABIT_UGURU_NAME ": found Abit uGuru\n");
+
+	/* Register sysfs hooks */
+	data->class_dev = hwmon_device_register(&pdev->dev);
+	if (IS_ERR(data->class_dev)) {
+		res = PTR_ERR(data->class_dev);
+		goto abituguru_probe_error;
+	}
+	for (i = 0; i < sysfs_attr_i; i++)
+		device_create_file(&pdev->dev, &data->sysfs_attr[i].dev_attr);
+	for (i = 0; i < ARRAY_SIZE(abituguru_sysfs_attr); i++)
+		device_create_file(&pdev->dev,
+			&abituguru_sysfs_attr[i].dev_attr);
+
+	return 0;
+
+abituguru_probe_error:
+	kfree(data);
+	return res;
+}
+
+static int __devexit abituguru_remove(struct platform_device *pdev)
+{
+	struct abituguru_data *data = platform_get_drvdata(pdev);
+
+	platform_set_drvdata(pdev, NULL);
+	hwmon_device_unregister(data->class_dev);
+	kfree(data);
+
+	return 0;
+}
+
+static struct abituguru_data *abituguru_update_device(struct device *dev)
+{
+	int i, err;
+	struct abituguru_data *data = dev_get_drvdata(dev);
+	/* fake a complete successful read if no update necessary. */
+	char success = 1;
+
+	mutex_lock(&data->update_lock);
+	if (time_after(jiffies, data->last_updated + HZ)) {
+		success = 0;
+		if ((err = abituguru_read(data, ABIT_UGURU_ALARM_BANK, 0,
+				data->alarms, 3, 0)) != 3)
+			goto LEAVE_UPDATE;
+		for (i = 0; i < ABIT_UGURU_MAX_BANK1_SENSORS; i++) {
+			if ((err = abituguru_read(data,
+					ABIT_UGURU_SENSOR_BANK1, i,
+					&data->bank1_value[i], 1, 0)) != 1)
+				goto LEAVE_UPDATE;
+			if ((err = abituguru_read(data,
+					ABIT_UGURU_SENSOR_BANK1 + 1, i,
+					data->bank1_settings[i], 3, 0)) != 3)
+				goto LEAVE_UPDATE;
+		}
+		for (i = 0; i < data->bank2_sensors; i++)
+			if ((err = abituguru_read(data,
+					ABIT_UGURU_SENSOR_BANK2, i,
+					&data->bank2_value[i], 1, 0)) != 1)
+				goto LEAVE_UPDATE;
+		/* success! */
+		success = 1;
+		data->update_timeouts = 0;
+LEAVE_UPDATE:
+		/* handle timeout condition */
+		if (err == -EBUSY) {
+			/* No overflow please */
+			if (data->update_timeouts < 255u)
+				data->update_timeouts++;
+			if (data->update_timeouts <= ABIT_UGURU_MAX_TIMEOUTS) {
+				ABIT_UGURU_DEBUG(3, "timeout exceeded, will "
+					"try again next update\n");
+				/* Just a timeout, fake a successful read */
+				success = 1;
+			} else
+				ABIT_UGURU_DEBUG(1, "timeout exceeded %d "
+					"times waiting for more input state\n",
+					(int)data->update_timeouts);
+		}
+		/* On success set last_updated */
+		if (success)
+			data->last_updated = jiffies;
+	}
+	mutex_unlock(&data->update_lock);
+
+	if (success)
+		return data;
+	else
+		return NULL;
+}
+
+static struct platform_driver abituguru_driver = {
+	.driver = {
+		.owner	= THIS_MODULE,
+		.name	= ABIT_UGURU_NAME,
+	},
+	.probe	= abituguru_probe,
+	.remove	= __devexit_p(abituguru_remove),
+};
+
+static int __init abituguru_detect(void)
+{
+	/* See if there is an uguru there. After a reboot uGuru will hold 0x00
+	   at DATA and 0xAC, when this driver has already been loaded once
+	   DATA will hold 0x08. For most uGuru's CMD will hold 0xAC in either
+	   scenario but some will hold 0x00.
+	   Some uGuru's initally hold 0x09 at DATA and will only hold 0x08
+	   after reading CMD first, so CMD must be read first! */
+	u8 cmd_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_CMD);
+	u8 data_val = inb_p(ABIT_UGURU_BASE + ABIT_UGURU_DATA);
+	if (((data_val == 0x00) || (data_val == 0x08)) &&
+	    ((cmd_val == 0x00) || (cmd_val == 0xAC)))
+		return ABIT_UGURU_BASE;
+
+	ABIT_UGURU_DEBUG(2, "no Abit uGuru found, data = 0x%02X, cmd = "
+		"0x%02X\n", (unsigned int)data_val, (unsigned int)cmd_val);
+
+	if (force) {
+		printk(KERN_INFO ABIT_UGURU_NAME ": Assuming Abit uGuru is "
+				"present because of \"force\" parameter\n");
+		return ABIT_UGURU_BASE;
+	}
+
+	/* No uGuru found */
+	return -ENODEV;
+}
+
+static struct platform_device *abituguru_pdev;
+
+static int __init abituguru_init(void)
+{
+	int address, err;
+	struct resource res = { .flags = IORESOURCE_IO };
+
+	address = abituguru_detect();
+	if (address < 0)
+		return address;
+
+	err = platform_driver_register(&abituguru_driver);
+	if (err)
+		goto exit;
+
+	abituguru_pdev = platform_device_alloc(ABIT_UGURU_NAME, address);
+	if (!abituguru_pdev) {
+		printk(KERN_ERR ABIT_UGURU_NAME
+			": Device allocation failed\n");
+		err = -ENOMEM;
+		goto exit_driver_unregister;
+	}
+
+	res.start = address;
+	res.end = address + ABIT_UGURU_REGION_LENGTH - 1;
+	res.name = ABIT_UGURU_NAME;
+
+	err = platform_device_add_resources(abituguru_pdev, &res, 1);
+	if (err) {
+		printk(KERN_ERR ABIT_UGURU_NAME
+			": Device resource addition failed (%d)\n", err);
+		goto exit_device_put;
+	}
+
+	err = platform_device_add(abituguru_pdev);
+	if (err) {
+		printk(KERN_ERR ABIT_UGURU_NAME
+			": Device addition failed (%d)\n", err);
+		goto exit_device_put;
+	}
+
+	return 0;
+
+exit_device_put:
+	platform_device_put(abituguru_pdev);
+exit_driver_unregister:
+	platform_driver_unregister(&abituguru_driver);
+exit:
+	return err;
+}
+
+static void __exit abituguru_exit(void)
+{
+	platform_device_unregister(abituguru_pdev);
+	platform_driver_unregister(&abituguru_driver);
+}
+
+MODULE_AUTHOR("Hans de Goede <j.w.r.degoede@hhs.nl>");
+MODULE_DESCRIPTION("Abit uGuru Sensor device");
+MODULE_LICENSE("GPL");
+
+module_init(abituguru_init);
+module_exit(abituguru_exit);
diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c
index 65b2709f750..facc1ccb833 100644
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -341,7 +341,7 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 				size_t count, int nr)
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
index 885465df6e6..fd72440faf7 100644
--- a/drivers/hwmon/f71805f.c
+++ b/drivers/hwmon/f71805f.c
@@ -99,10 +99,6 @@ superio_exit(int base)
 #define ADDR_REG_OFFSET		0
 #define DATA_REG_OFFSET		1
 
-static struct resource f71805f_resource __initdata = {
-	.flags	= IORESOURCE_IO,
-};
-
 /*
  * Registers
  */
@@ -782,6 +778,11 @@ static struct platform_driver f71805f_driver = {
 
 static int __init f71805f_device_add(unsigned short address)
 {
+	struct resource res = {
+		.start	= address,
+		.end	= address + REGION_LENGTH - 1,
+		.flags	= IORESOURCE_IO,
+	};
 	int err;
 
 	pdev = platform_device_alloc(DRVNAME, address);
@@ -791,10 +792,8 @@ static int __init f71805f_device_add(unsigned short address)
 		goto exit;
 	}
 
-	f71805f_resource.start = address;
-	f71805f_resource.end = address + REGION_LENGTH - 1;
-	f71805f_resource.name = pdev->name;
-	err = platform_device_add_resources(pdev, &f71805f_resource, 1);
+	res.name = pdev->name;
+	err = platform_device_add_resources(pdev, &res, 1);
 	if (err) {
 		printk(KERN_ERR DRVNAME ": Device resource addition failed "
 		       "(%d)\n", err);
diff --git a/drivers/hwmon/hdaps.c b/drivers/hwmon/hdaps.c
index 1659f6c4145..42b632889dd 100644
--- a/drivers/hwmon/hdaps.c
+++ b/drivers/hwmon/hdaps.c
@@ -41,7 +41,7 @@
 #define HDAPS_PORT_STATE	0x1611	/* device state */
 #define HDAPS_PORT_YPOS		0x1612	/* y-axis position */
 #define	HDAPS_PORT_XPOS		0x1614	/* x-axis position */
-#define HDAPS_PORT_TEMP1	0x1616	/* device temperature, in celcius */
+#define HDAPS_PORT_TEMP1	0x1616	/* device temperature, in Celsius */
 #define HDAPS_PORT_YVAR		0x1617	/* y-axis variance (what is this?) */
 #define HDAPS_PORT_XVAR		0x1619	/* x-axis variance (what is this?) */
 #define HDAPS_PORT_TEMP2	0x161b	/* device temperature (again?) */
@@ -522,13 +522,15 @@ static int __init hdaps_init(void)
 {
 	int ret;
 
-	/* Note that DMI_MATCH(...,"ThinkPad T42") will match "ThinkPad T42p" */
+	/* Note that HDAPS_DMI_MATCH_NORMAL("ThinkPad T42") would match
+	  "ThinkPad T42p", so the order of the entries matters */
 	struct dmi_system_id hdaps_whitelist[] = {
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad H"),
 		HDAPS_DMI_MATCH_INVERT("ThinkPad R50p"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad R50"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad R51"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad R52"),
+		HDAPS_DMI_MATCH_NORMAL("ThinkPad H"),	 /* R52 (1846AQG) */
 		HDAPS_DMI_MATCH_INVERT("ThinkPad T41p"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad T41"),
 		HDAPS_DMI_MATCH_INVERT("ThinkPad T42p"),
@@ -536,9 +538,9 @@ static int __init hdaps_init(void)
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad T43"),
 		HDAPS_DMI_MATCH_LENOVO("ThinkPad T60p"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad X40"),
-		HDAPS_DMI_MATCH_NORMAL("ThinkPad X41 Tablet"),
 		HDAPS_DMI_MATCH_NORMAL("ThinkPad X41"),
 		HDAPS_DMI_MATCH_LENOVO("ThinkPad X60"),
+		HDAPS_DMI_MATCH_NORMAL("ThinkPad Z60m"),
 		{ .ident = NULL }
 	};
 
diff --git a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
index a74a44f16f5..a6764ff0080 100644
--- a/drivers/hwmon/hwmon-vid.c
+++ b/drivers/hwmon/hwmon-vid.c
@@ -58,11 +58,20 @@
     doesn't seem to be any named specification for these. The conversion
     tables are detailed directly in the various Pentium M datasheets:
     http://www.intel.com/design/intarch/pentiumm/docs_pentiumm.htm
+
+    The 14 specification corresponds to Intel Core series. There
+    doesn't seem to be any named specification for these. The conversion
+    tables are detailed directly in the various Pentium Core datasheets:
+    http://www.intel.com/design/mobile/datashts/309221.htm
+
+    The 110 (VRM 11) specification corresponds to Intel Conroe based series.
+    http://www.intel.com/design/processor/applnots/313214.htm
 */
 
 /* vrm is the VRM/VRD document version multiplied by 10.
-   val is the 4-, 5- or 6-bit VID code.
-   Returned value is in mV to avoid floating point in the kernel. */
+   val is the 4-bit or more VID code.
+   Returned value is in mV to avoid floating point in the kernel.
+   Some VID have some bits in uV scale, this is rounded to mV */
 int vid_from_reg(int val, u8 vrm)
 {
 	int vid;
@@ -70,26 +79,36 @@ int vid_from_reg(int val, u8 vrm)
 	switch(vrm) {
 
 	case 100:               /* VRD 10.0 */
+		/* compute in uV, round to mV */
+		val &= 0x3f;
 		if((val & 0x1f) == 0x1f)
 			return 0;
 		if((val & 0x1f) <= 0x09 || val == 0x0a)
-			vid = 10875 - (val & 0x1f) * 250;
+			vid = 1087500 - (val & 0x1f) * 25000;
 		else
-			vid = 18625 - (val & 0x1f) * 250;
+			vid = 1862500 - (val & 0x1f) * 25000;
 		if(val & 0x20)
-			vid -= 125;
-		vid /= 10;      /* only return 3 dec. places for now */
-		return vid;
+			vid -= 12500;
+		return((vid + 500) / 1000);
 
+	case 110:		/* Intel Conroe */
+				/* compute in uV, round to mV */
+		val &= 0xff;
+		if(((val & 0x7e) == 0xfe) || (!(val & 0x7e)))
+			return 0;
+		return((1600000 - (val - 2) * 6250 + 500) / 1000);
 	case 24:                /* Opteron processor */
+		val &= 0x1f;
 		return(val == 0x1f ? 0 : 1550 - val * 25);
 
 	case 91:		/* VRM 9.1 */
 	case 90:		/* VRM 9.0 */
+		val &= 0x1f;
 		return(val == 0x1f ? 0 :
 		                       1850 - val * 25);
 
 	case 85:		/* VRM 8.5 */
+		val &= 0x1f;
 		return((val & 0x10  ? 25 : 0) +
 		       ((val & 0x0f) > 0x04 ? 2050 : 1250) -
 		       ((val & 0x0f) * 50));
@@ -98,14 +117,21 @@ int vid_from_reg(int val, u8 vrm)
 		val &= 0x0f;
 				/* fall through */
 	case 82:		/* VRM 8.2 */
+		val &= 0x1f;
 		return(val == 0x1f ? 0 :
 		       val & 0x10  ? 5100 - (val) * 100 :
 		                     2050 - (val) * 50);
 	case 17:		/* Intel IMVP-II */
+		val &= 0x1f;
 		return(val & 0x10 ? 975 - (val & 0xF) * 25 :
 				    1750 - val * 50);
 	case 13:
-		return(1708 - (val & 0x3f) * 16);
+		val &= 0x3f;
+		return(1708 - val * 16);
+	case 14:		/* Intel Core */
+				/* compute in uV, round to mV */
+		val &= 0x7f;
+		return(val > 0x77 ? 0 : (1500000 - (val * 12500) + 500) / 1000);
 	default:		/* report 0 for unknown */
 		printk(KERN_INFO "hwmon-vid: requested unknown VRM version\n");
 		return 0;
@@ -138,6 +164,8 @@ static struct vrm_model vrm_models[] = {
 	{X86_VENDOR_INTEL, 0x6, 0x9, ANY, 13},		/* Pentium M (130 nm) */
 	{X86_VENDOR_INTEL, 0x6, 0xB, ANY, 85},		/* Tualatin */
 	{X86_VENDOR_INTEL, 0x6, 0xD, ANY, 13},		/* Pentium M (90 nm) */
+	{X86_VENDOR_INTEL, 0x6, 0xE, ANY, 14},		/* Intel Core (65 nm) */
+	{X86_VENDOR_INTEL, 0x6, 0xF, ANY, 110},		/* Intel Conroe */
 	{X86_VENDOR_INTEL, 0x6, ANY, ANY, 82},		/* any P6 */
 	{X86_VENDOR_INTEL, 0x7, ANY, ANY, 0},		/* Itanium */
 	{X86_VENDOR_INTEL, 0xF, 0x0, ANY, 90},		/* P4 */
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c
new file mode 100644
index 00000000000..6ba84731b9c
--- /dev/null
+++ b/drivers/hwmon/lm70.c
@@ -0,0 +1,165 @@
+/*
+ * lm70.c
+ *
+ * The LM70 is a temperature sensor chip from National Semiconductor (NS).
+ * Copyright (C) 2006 Kaiwan N Billimoria <kaiwan@designergraphix.com>
+ *
+ * The LM70 communicates with a host processor via an SPI/Microwire Bus
+ * interface. The complete datasheet is available at National's website
+ * here:
+ * http://www.national.com/pf/LM/LM70.html
+ *
+ * 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/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/sysfs.h>
+#include <linux/hwmon.h>
+#include <linux/spi/spi.h>
+#include <asm/semaphore.h>
+
+#define DRVNAME		"lm70"
+
+struct lm70 {
+	struct class_device *cdev;
+	struct semaphore sem;
+};
+
+/* sysfs hook function */
+static ssize_t lm70_sense_temp(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	int status, val;
+	u8 rxbuf[2];
+	s16 raw=0;
+	struct lm70 *p_lm70 = dev_get_drvdata(&spi->dev);
+
+	if (down_interruptible(&p_lm70->sem))
+		return -ERESTARTSYS;
+
+	/*
+	 * spi_read() requires a DMA-safe buffer; so we use
+	 * spi_write_then_read(), transmitting 0 bytes.
+	 */
+	status = spi_write_then_read(spi, NULL, 0, &rxbuf[0], 2);
+	if (status < 0) {
+		printk(KERN_WARNING
+		"spi_write_then_read failed with status %d\n", status);
+		goto out;
+	}
+	dev_dbg(dev, "rxbuf[1] : 0x%x rxbuf[0] : 0x%x\n", rxbuf[1], rxbuf[0]);
+
+	raw = (rxbuf[1] << 8) + rxbuf[0];
+	dev_dbg(dev, "raw=0x%x\n", raw);
+
+	/*
+	 * The "raw" temperature read into rxbuf[] is a 16-bit signed 2's
+	 * complement value. Only the MSB 11 bits (1 sign + 10 temperature
+	 * bits) are meaningful; the LSB 5 bits are to be discarded.
+	 * See the datasheet.
+	 *
+	 * Further, each bit represents 0.25 degrees Celsius; so, multiply
+	 * by 0.25. Also multiply by 1000 to represent in millidegrees
+	 * Celsius.
+	 * So it's equivalent to multiplying by 0.25 * 1000 = 250.
+	 */
+	val = ((int)raw/32) * 250;
+	status = sprintf(buf, "%+d\n", val); /* millidegrees Celsius */
+out:
+	up(&p_lm70->sem);
+	return status;
+}
+
+static DEVICE_ATTR(temp1_input, S_IRUGO, lm70_sense_temp, NULL);
+
+/*----------------------------------------------------------------------*/
+
+static int __devinit lm70_probe(struct spi_device *spi)
+{
+	struct lm70 *p_lm70;
+	int status;
+
+	p_lm70 = kzalloc(sizeof *p_lm70, GFP_KERNEL);
+	if (!p_lm70)
+		return -ENOMEM;
+
+	init_MUTEX(&p_lm70->sem);
+
+	/* sysfs hook */
+	p_lm70->cdev = hwmon_device_register(&spi->dev);
+	if (IS_ERR(p_lm70->cdev)) {
+		dev_dbg(&spi->dev, "hwmon_device_register failed.\n");
+		status = PTR_ERR(p_lm70->cdev);
+		goto out_dev_reg_failed;
+	}
+	dev_set_drvdata(&spi->dev, p_lm70);
+
+	if ((status = device_create_file(&spi->dev, &dev_attr_temp1_input))) {
+		dev_dbg(&spi->dev, "device_create_file failure.\n");
+		goto out_dev_create_file_failed;
+	}
+
+	return 0;
+
+out_dev_create_file_failed:
+	hwmon_device_unregister(p_lm70->cdev);
+out_dev_reg_failed:
+	dev_set_drvdata(&spi->dev, NULL);
+	kfree(p_lm70);
+	return status;
+}
+
+static int __exit lm70_remove(struct spi_device *spi)
+{
+	struct lm70 *p_lm70 = dev_get_drvdata(&spi->dev);
+
+	device_remove_file(&spi->dev, &dev_attr_temp1_input);
+	hwmon_device_unregister(p_lm70->cdev);
+	dev_set_drvdata(&spi->dev, NULL);
+	kfree(p_lm70);
+
+	return 0;
+}
+
+static struct spi_driver lm70_driver = {
+	.driver = {
+		.name	= "lm70",
+		.owner	= THIS_MODULE,
+	},
+	.probe	= lm70_probe,
+	.remove	= __devexit_p(lm70_remove),
+};
+
+static int __init init_lm70(void)
+{
+	return spi_register_driver(&lm70_driver);
+}
+
+static void __exit cleanup_lm70(void)
+{
+	spi_unregister_driver(&lm70_driver);
+}
+
+module_init(init_lm70);
+module_exit(cleanup_lm70);
+
+MODULE_AUTHOR("Kaiwan N Billimoria");
+MODULE_DESCRIPTION("National Semiconductor LM70 Linux driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index 94be3d797e6..a6ce7abf860 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -358,7 +358,7 @@ static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 	size_t count, int nr)
diff --git a/drivers/hwmon/lm80.c b/drivers/hwmon/lm80.c
index f72120d08c4..b4ccdfc0120 100644
--- a/drivers/hwmon/lm80.c
+++ b/drivers/hwmon/lm80.c
@@ -253,7 +253,7 @@ set_fan(min2, fan_min[1], LM80_REG_FAN_MIN(2), fan_div[1]);
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 	size_t count, int nr)
diff --git a/drivers/hwmon/lm83.c b/drivers/hwmon/lm83.c
index aac4ec2bf69..2137d7879df 100644
--- a/drivers/hwmon/lm83.c
+++ b/drivers/hwmon/lm83.c
@@ -12,6 +12,10 @@
  * Since the datasheet omits to give the chip stepping code, I give it
  * here: 0x03 (at register 0xff).
  *
+ * Also supports the LM82 temp sensor, which is basically a stripped down
+ * model of the LM83.  Datasheet is here:
+ * http://www.national.com/pf/LM/LM82.html
+ *
  * 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
@@ -52,7 +56,7 @@ static unsigned short normal_i2c[] = { 0x18, 0x19, 0x1a,
  * Insmod parameters
  */
 
-I2C_CLIENT_INSMOD_1(lm83);
+I2C_CLIENT_INSMOD_2(lm83, lm82);
 
 /*
  * The LM83 registers
@@ -283,6 +287,9 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
 		if (man_id == 0x01) { /* National Semiconductor */
 			if (chip_id == 0x03) {
 				kind = lm83;
+			} else
+			if (chip_id == 0x01) {
+				kind = lm82;
 			}
 		}
 
@@ -296,6 +303,9 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
 
 	if (kind == lm83) {
 		name = "lm83";
+	} else
+	if (kind == lm82) {
+		name = "lm82";
 	}
 
 	/* We can fill in the remaining client fields */
@@ -319,32 +329,46 @@ static int lm83_detect(struct i2c_adapter *adapter, int address, int kind)
 		goto exit_detach;
 	}
 
+	/*
+	 * The LM82 can only monitor one external diode which is
+	 * at the same register as the LM83 temp3 entry - so we
+	 * declare 1 and 3 common, and then 2 and 4 only for the LM83.
+	 */
+
 	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp1_input.dev_attr);
 	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_input.dev_attr);
-	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp3_input.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp4_input.dev_attr);
+
 	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp1_max.dev_attr);
 	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_max.dev_attr);
-	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp3_max.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp4_max.dev_attr);
+
 	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp1_crit.dev_attr);
 	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_crit.dev_attr);
-	device_create_file(&new_client->dev,
 			   &sensor_dev_attr_temp3_crit.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp4_crit.dev_attr);
+
 	device_create_file(&new_client->dev, &dev_attr_alarms);
 
+	if (kind == lm83) {
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp2_input.dev_attr);
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp4_input.dev_attr);
+
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp2_max.dev_attr);
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp4_max.dev_attr);
+
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp2_crit.dev_attr);
+		device_create_file(&new_client->dev,
+				   &sensor_dev_attr_temp4_crit.dev_attr);
+	}
+
 	return 0;
 
 exit_detach:
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index e229daf666d..e6c1b638c97 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -421,7 +421,7 @@ static void set_fan_min(struct device *dev, const char *buf, int nr)
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan clock divider.  This follows the principle
-   of least suprise; the user doesn't expect the fan minimum to change just
+   of least surprise; the user doesn't expect the fan minimum to change just
    because the divider changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 		size_t count, int nr)
diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 6f3fda73f70..063f71c5f07 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -380,7 +380,7 @@ static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 	size_t count, int nr)
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 7732aec5459..825e8f72698 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -207,7 +207,7 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan clock divider.  This follows the principle
-   of least suprise; the user doesn't expect the fan minimum to change just
+   of least surprise; the user doesn't expect the fan minimum to change just
    because the divider changed. */
 static ssize_t set_fan_div(struct device *dev, const char *buf,
 		size_t count, int nr)
diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
new file mode 100644
index 00000000000..bdc4570acf9
--- /dev/null
+++ b/drivers/hwmon/smsc47m192.c
@@ -0,0 +1,648 @@
+/*
+    smsc47m192.c - Support for hardware monitoring block of
+                   SMSC LPC47M192 and LPC47M997 Super I/O chips
+
+    Copyright (C) 2006  Hartmut Rick <linux@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(nr)		((nr)<6 ? (0x20 + (nr)) : \
+					(0x50 + (nr) - 6))
+#define SMSC47M192_REG_IN_MAX(nr)	((nr)<6 ? (0x2b + (nr) * 2) : \
+					(0x54 + (((nr) - 6) * 2)))
+#define SMSC47M192_REG_IN_MIN(nr)	((nr)<6 ? (0x2c + (nr) * 2) : \
+					(0x55 + (((nr) - 6) * 2)))
+static u8 SMSC47M192_REG_TEMP[3] =	{ 0x27, 0x26, 0x52 };
+static u8 SMSC47M192_REG_TEMP_MAX[3] =	{ 0x39, 0x37, 0x58 };
+static u8 SMSC47M192_REG_TEMP_MIN[3] =	{ 0x3A, 0x38, 0x59 };
+#define SMSC47M192_REG_TEMP_OFFSET(nr)	((nr)==2 ? 0x1e : 0x1f)
+#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 alarms;		/* Register encoding, combined */
+	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 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_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->alarms & nr) ? 1 : 0);
+}
+
+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_input_fault, S_IRUGO, show_alarm, NULL, 0x4000);
+static SENSOR_DEVICE_ATTR(temp3_input_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);
+}
+
+static void smsc47m192_init_client(struct i2c_client *client)
+{
+	int i;
+	u8 config = i2c_smbus_read_byte_data(client, SMSC47M192_REG_CONFIG);
+	u8 sfr = i2c_smbus_read_byte_data(client, SMSC47M192_REG_SFR);
+
+	/* select cycle mode (pause 1 sec between updates) */
+	i2c_smbus_write_byte_data(client, SMSC47M192_REG_SFR,
+						(sfr & 0xfd) | 0x02);
+	if (!(config & 0x01)) {
+		/* 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);
+		}
+
+		/* start monitoring */
+		i2c_smbus_write_byte_data(client, SMSC47M192_REG_CONFIG,
+						(config & 0xf7) | 0x01);
+	}
+}
+
+/* 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_input_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_input_fault.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 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;
+
+	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]);
+		}
+		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;
+		data->alarms = i2c_smbus_read_byte_data(client,
+						SMSC47M192_REG_ALARM1) |
+			       (i2c_smbus_read_byte_data(client,
+		       				SMSC47M192_REG_ALARM2) << 8);
+
+		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@rick.claranet.de>");
+MODULE_DESCRIPTION("SMSC47M192 driver");
+MODULE_LICENSE("GPL");
+
+module_init(smsc47m192_init);
+module_exit(smsc47m192_exit);
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index b6bd5685fd3..40301bc6ce1 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -30,10 +30,7 @@
     Supports the following chips:
 
     Chip        #vin    #fan    #pwm    #temp   chip_id man_id
-    w83627ehf   -       5       -       3       0x88    0x5ca3
-
-    This is a preliminary version of the driver, only supporting the
-    fan and temperature inputs. The chip does much more than that.
+    w83627ehf   10      5       -       3       0x88    0x5ca3
 */
 
 #include <linux/module.h>
@@ -121,6 +118,14 @@ superio_exit(void)
 static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 };
 static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c };
 
+/* The W83627EHF registers for nr=7,8,9 are in bank 5 */
+#define W83627EHF_REG_IN_MAX(nr)	((nr < 7) ? (0x2b + (nr) * 2) : \
+					 (0x554 + (((nr) - 7) * 2)))
+#define W83627EHF_REG_IN_MIN(nr)	((nr < 7) ? (0x2c + (nr) * 2) : \
+					 (0x555 + (((nr) - 7) * 2)))
+#define W83627EHF_REG_IN(nr)		((nr < 7) ? (0x20 + (nr)) : \
+					 (0x550 + (nr) - 7))
+
 #define W83627EHF_REG_TEMP1		0x27
 #define W83627EHF_REG_TEMP1_HYST	0x3a
 #define W83627EHF_REG_TEMP1_OVER	0x39
@@ -136,6 +141,10 @@ static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
 #define W83627EHF_REG_DIODE		0x59
 #define W83627EHF_REG_SMI_OVT		0x4C
 
+#define W83627EHF_REG_ALARM1		0x459
+#define W83627EHF_REG_ALARM2		0x45A
+#define W83627EHF_REG_ALARM3		0x45B
+
 /*
  * Conversions
  */
@@ -172,6 +181,20 @@ temp1_to_reg(int temp)
 	return (temp + 500) / 1000;
 }
 
+/* Some of analog inputs have internal scaling (2x), 8mV is ADC LSB */
+
+static u8 scale_in[10] = { 8, 8, 16, 16, 8, 8, 8, 16, 16, 8 };
+
+static inline long in_from_reg(u8 reg, u8 nr)
+{
+	return reg * scale_in[nr];
+}
+
+static inline u8 in_to_reg(u32 val, u8 nr)
+{
+	return SENSORS_LIMIT(((val + (scale_in[nr] / 2)) / scale_in[nr]), 0, 255);
+}
+
 /*
  * Data structures and manipulation thereof
  */
@@ -186,6 +209,9 @@ struct w83627ehf_data {
 	unsigned long last_updated;	/* In jiffies */
 
 	/* Register values */
+	u8 in[10];		/* Register value */
+	u8 in_max[10];		/* Register value */
+	u8 in_min[10];		/* Register value */
 	u8 fan[5];
 	u8 fan_min[5];
 	u8 fan_div[5];
@@ -196,6 +222,7 @@ struct w83627ehf_data {
 	s16 temp[2];
 	s16 temp_max[2];
 	s16 temp_max_hyst[2];
+	u32 alarms;
 };
 
 static inline int is_word_sized(u16 reg)
@@ -349,6 +376,16 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 			data->fan_div[3] |= (i >> 5) & 0x04;
 		}
 
+		/* Measured voltages and limits */
+		for (i = 0; i < 10; i++) {
+			data->in[i] = w83627ehf_read_value(client,
+				      W83627EHF_REG_IN(i));
+			data->in_min[i] = w83627ehf_read_value(client,
+					  W83627EHF_REG_IN_MIN(i));
+			data->in_max[i] = w83627ehf_read_value(client,
+					  W83627EHF_REG_IN_MAX(i));
+		}
+
 		/* Measured fan speeds and limits */
 		for (i = 0; i < 5; i++) {
 			if (!(data->has_fan & (1 << i)))
@@ -395,6 +432,13 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 						 W83627EHF_REG_TEMP_HYST[i]);
 		}
 
+		data->alarms = w83627ehf_read_value(client,
+					W83627EHF_REG_ALARM1) |
+			       (w83627ehf_read_value(client,
+					W83627EHF_REG_ALARM2) << 8) |
+			       (w83627ehf_read_value(client,
+					W83627EHF_REG_ALARM3) << 16);
+
 		data->last_updated = jiffies;
 		data->valid = 1;
 	}
@@ -406,6 +450,109 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
 /*
  * Sysfs callback functions
  */
+#define show_in_reg(reg) \
+static ssize_t \
+show_##reg(struct device *dev, struct device_attribute *attr, \
+	   char *buf) \
+{ \
+	struct w83627ehf_data *data = w83627ehf_update_device(dev); \
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
+	int nr = sensor_attr->index; \
+	return sprintf(buf, "%ld\n", in_from_reg(data->reg[nr], nr)); \
+}
+show_in_reg(in)
+show_in_reg(in_min)
+show_in_reg(in_max)
+
+#define store_in_reg(REG, reg) \
+static ssize_t \
+store_in_##reg (struct device *dev, struct device_attribute *attr, \
+			const char *buf, size_t count) \
+{ \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct w83627ehf_data *data = i2c_get_clientdata(client); \
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); \
+	int nr = sensor_attr->index; \
+	u32 val = simple_strtoul(buf, NULL, 10); \
+ \
+	mutex_lock(&data->update_lock); \
+	data->in_##reg[nr] = in_to_reg(val, nr); \
+	w83627ehf_write_value(client, W83627EHF_REG_IN_##REG(nr), \
+			      data->in_##reg[nr]); \
+	mutex_unlock(&data->update_lock); \
+	return count; \
+}
+
+store_in_reg(MIN, min)
+store_in_reg(MAX, max)
+
+static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct w83627ehf_data *data = w83627ehf_update_device(dev);
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	int nr = sensor_attr->index;
+	return sprintf(buf, "%u\n", (data->alarms >> nr) & 0x01);
+}
+
+static struct sensor_device_attribute sda_in_input[] = {
+	SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
+	SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
+	SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
+	SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
+	SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
+	SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
+	SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
+	SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
+	SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
+	SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
+};
+
+static struct sensor_device_attribute sda_in_alarm[] = {
+	SENSOR_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0),
+	SENSOR_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1),
+	SENSOR_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2),
+	SENSOR_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3),
+	SENSOR_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8),
+	SENSOR_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 21),
+	SENSOR_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 20),
+	SENSOR_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 16),
+	SENSOR_ATTR(in8_alarm, S_IRUGO, show_alarm, NULL, 17),
+	SENSOR_ATTR(in9_alarm, S_IRUGO, show_alarm, NULL, 19),
+};
+
+static struct sensor_device_attribute sda_in_min[] = {
+       SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
+       SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
+       SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
+       SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
+       SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
+       SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
+       SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
+       SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
+       SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
+       SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
+};
+
+static struct sensor_device_attribute sda_in_max[] = {
+       SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
+       SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
+       SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
+       SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
+       SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
+       SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
+       SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
+       SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
+       SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
+       SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
+};
+
+static void device_create_file_in(struct device *dev, int i)
+{
+	device_create_file(dev, &sda_in_input[i].dev_attr);
+	device_create_file(dev, &sda_in_alarm[i].dev_attr);
+	device_create_file(dev, &sda_in_min[i].dev_attr);
+	device_create_file(dev, &sda_in_max[i].dev_attr);
+}
 
 #define show_fan_reg(reg) \
 static ssize_t \
@@ -505,6 +652,14 @@ static struct sensor_device_attribute sda_fan_input[] = {
 	SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
 };
 
+static struct sensor_device_attribute sda_fan_alarm[] = {
+	SENSOR_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6),
+	SENSOR_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7),
+	SENSOR_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 11),
+	SENSOR_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 10),
+	SENSOR_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 23),
+};
+
 static struct sensor_device_attribute sda_fan_min[] = {
 	SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
 		    store_fan_min, 0),
@@ -529,6 +684,7 @@ static struct sensor_device_attribute sda_fan_div[] = {
 static void device_create_file_fan(struct device *dev, int i)
 {
 	device_create_file(dev, &sda_fan_input[i].dev_attr);
+	device_create_file(dev, &sda_fan_alarm[i].dev_attr);
 	device_create_file(dev, &sda_fan_div[i].dev_attr);
 	device_create_file(dev, &sda_fan_min[i].dev_attr);
 }
@@ -616,6 +772,9 @@ static struct sensor_device_attribute sda_temp[] = {
 		    store_temp_max_hyst, 0),
 	SENSOR_ATTR(temp3_max_hyst, S_IRUGO | S_IWUSR, show_temp_max_hyst,
 		    store_temp_max_hyst, 1),
+	SENSOR_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4),
+	SENSOR_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5),
+	SENSOR_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 13),
 };
 
 /*
@@ -705,6 +864,9 @@ static int w83627ehf_detect(struct i2c_adapter *adapter)
 		goto exit_detach;
 	}
 
+	for (i = 0; i < 10; i++)
+		device_create_file_in(dev, i);
+
 	for (i = 0; i < 5; i++) {
 		if (data->has_fan & (1 << i))
 			device_create_file_fan(dev, i);
diff --git a/drivers/hwmon/w83627hf.c b/drivers/hwmon/w83627hf.c
index 71fb7f1af8f..79368d53c36 100644
--- a/drivers/hwmon/w83627hf.c
+++ b/drivers/hwmon/w83627hf.c
@@ -781,7 +781,7 @@ show_fan_div_reg(struct device *dev, char *buf, int nr)
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t
 store_fan_div_reg(struct device *dev, const char *buf, size_t count, int nr)
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index e4c700356c4..7be469ed0f8 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -630,7 +630,7 @@ show_fan_div_reg(struct device *dev, char *buf, int nr)
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t
 store_fan_div_reg(struct device *dev, const char *buf, size_t count, int nr)
diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c
new file mode 100644
index 00000000000..eec43abd57f
--- /dev/null
+++ b/drivers/hwmon/w83791d.c
@@ -0,0 +1,1255 @@
+/*
+    w83791d.c - Part of lm_sensors, Linux kernel modules for hardware
+                monitoring
+
+    Copyright (C) 2006 Charles Spirakis <bezaur@gmail.com>
+
+    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.
+*/
+
+/*
+    Supports following chips:
+
+    Chip	#vin	#fanin	#pwm	#temp	wchipid	vendid	i2c	ISA
+    w83791d	10	5	3	3	0x71	0x5ca3	yes	no
+
+    The w83791d chip appears to be part way between the 83781d and the
+    83792d. Thus, this file is derived from both the w83792d.c and
+    w83781d.c files, but its output is more along the lines of the
+    83781d (which means there are no changes to the user-mode sensors
+    program which treats the 83791d as an 83781d).
+*/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-vid.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+
+#define NUMBER_OF_VIN		10
+#define NUMBER_OF_FANIN		5
+#define NUMBER_OF_TEMPIN	3
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(w83791d);
+I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
+			"{bus, clientaddr, subclientaddr1, subclientaddr2}");
+
+static int reset;
+module_param(reset, bool, 0);
+MODULE_PARM_DESC(reset, "Set to one to force a hardware chip reset");
+
+static int init;
+module_param(init, bool, 0);
+MODULE_PARM_DESC(init, "Set to one to force extra software initialization");
+
+/* The W83791D registers */
+static const u8 W83791D_REG_IN[NUMBER_OF_VIN] = {
+	0x20,			/* VCOREA in DataSheet */
+	0x21,			/* VINR0 in DataSheet */
+	0x22,			/* +3.3VIN in DataSheet */
+	0x23,			/* VDD5V in DataSheet */
+	0x24,			/* +12VIN in DataSheet */
+	0x25,			/* -12VIN in DataSheet */
+	0x26,			/* -5VIN in DataSheet */
+	0xB0,			/* 5VSB in DataSheet */
+	0xB1,			/* VBAT in DataSheet */
+	0xB2			/* VINR1 in DataSheet */
+};
+
+static const u8 W83791D_REG_IN_MAX[NUMBER_OF_VIN] = {
+	0x2B,			/* VCOREA High Limit in DataSheet */
+	0x2D,			/* VINR0 High Limit in DataSheet */
+	0x2F,			/* +3.3VIN High Limit in DataSheet */
+	0x31,			/* VDD5V High Limit in DataSheet */
+	0x33,			/* +12VIN High Limit in DataSheet */
+	0x35,			/* -12VIN High Limit in DataSheet */
+	0x37,			/* -5VIN High Limit in DataSheet */
+	0xB4,			/* 5VSB High Limit in DataSheet */
+	0xB6,			/* VBAT High Limit in DataSheet */
+	0xB8			/* VINR1 High Limit in DataSheet */
+};
+static const u8 W83791D_REG_IN_MIN[NUMBER_OF_VIN] = {
+	0x2C,			/* VCOREA Low Limit in DataSheet */
+	0x2E,			/* VINR0 Low Limit in DataSheet */
+	0x30,			/* +3.3VIN Low Limit in DataSheet */
+	0x32,			/* VDD5V Low Limit in DataSheet */
+	0x34,			/* +12VIN Low Limit in DataSheet */
+	0x36,			/* -12VIN Low Limit in DataSheet */
+	0x38,			/* -5VIN Low Limit in DataSheet */
+	0xB5,			/* 5VSB Low Limit in DataSheet */
+	0xB7,			/* VBAT Low Limit in DataSheet */
+	0xB9			/* VINR1 Low Limit in DataSheet */
+};
+static const u8 W83791D_REG_FAN[NUMBER_OF_FANIN] = {
+	0x28,			/* FAN 1 Count in DataSheet */
+	0x29,			/* FAN 2 Count in DataSheet */
+	0x2A,			/* FAN 3 Count in DataSheet */
+	0xBA,			/* FAN 4 Count in DataSheet */
+	0xBB,			/* FAN 5 Count in DataSheet */
+};
+static const u8 W83791D_REG_FAN_MIN[NUMBER_OF_FANIN] = {
+	0x3B,			/* FAN 1 Count Low Limit in DataSheet */
+	0x3C,			/* FAN 2 Count Low Limit in DataSheet */
+	0x3D,			/* FAN 3 Count Low Limit in DataSheet */
+	0xBC,			/* FAN 4 Count Low Limit in DataSheet */
+	0xBD,			/* FAN 5 Count Low Limit in DataSheet */
+};
+
+static const u8 W83791D_REG_FAN_CFG[2] = {
+	0x84,			/* FAN 1/2 configuration */
+	0x95,			/* FAN 3 configuration */
+};
+
+static const u8 W83791D_REG_FAN_DIV[3] = {
+	0x47,			/* contains FAN1 and FAN2 Divisor */
+	0x4b,			/* contains FAN3 Divisor */
+	0x5C,			/* contains FAN4 and FAN5 Divisor */
+};
+
+#define W83791D_REG_BANK		0x4E
+#define W83791D_REG_TEMP2_CONFIG	0xC2
+#define W83791D_REG_TEMP3_CONFIG	0xCA
+
+static const u8 W83791D_REG_TEMP1[3] = {
+	0x27,			/* TEMP 1 in DataSheet */
+	0x39,			/* TEMP 1 Over in DataSheet */
+	0x3A,			/* TEMP 1 Hyst in DataSheet */
+};
+
+static const u8 W83791D_REG_TEMP_ADD[2][6] = {
+	{0xC0,			/* TEMP 2 in DataSheet */
+	 0xC1,			/* TEMP 2(0.5 deg) in DataSheet */
+	 0xC5,			/* TEMP 2 Over High part in DataSheet */
+	 0xC6,			/* TEMP 2 Over Low part in DataSheet */
+	 0xC3,			/* TEMP 2 Thyst High part in DataSheet */
+	 0xC4},			/* TEMP 2 Thyst Low part in DataSheet */
+	{0xC8,			/* TEMP 3 in DataSheet */
+	 0xC9,			/* TEMP 3(0.5 deg) in DataSheet */
+	 0xCD,			/* TEMP 3 Over High part in DataSheet */
+	 0xCE,			/* TEMP 3 Over Low part in DataSheet */
+	 0xCB,			/* TEMP 3 Thyst High part in DataSheet */
+	 0xCC}			/* TEMP 3 Thyst Low part in DataSheet */
+};
+
+#define W83791D_REG_BEEP_CONFIG		0x4D
+
+static const u8 W83791D_REG_BEEP_CTRL[3] = {
+	0x56,			/* BEEP Control Register 1 */
+	0x57,			/* BEEP Control Register 2 */
+	0xA3,			/* BEEP Control Register 3 */
+};
+
+#define W83791D_REG_CONFIG		0x40
+#define W83791D_REG_VID_FANDIV		0x47
+#define W83791D_REG_DID_VID4		0x49
+#define W83791D_REG_WCHIPID		0x58
+#define W83791D_REG_CHIPMAN		0x4F
+#define W83791D_REG_PIN			0x4B
+#define W83791D_REG_I2C_SUBADDR		0x4A
+
+#define W83791D_REG_ALARM1 0xA9	/* realtime status register1 */
+#define W83791D_REG_ALARM2 0xAA	/* realtime status register2 */
+#define W83791D_REG_ALARM3 0xAB	/* realtime status register3 */
+
+#define W83791D_REG_VBAT		0x5D
+#define W83791D_REG_I2C_ADDR		0x48
+
+/* The SMBus locks itself. The Winbond W83791D has a bank select register
+   (index 0x4e), but the driver only accesses registers in bank 0. Since
+   we don't switch banks, we don't need any special code to handle
+   locking access between bank switches */
+static inline int w83791d_read(struct i2c_client *client, u8 reg)
+{
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static inline int w83791d_write(struct i2c_client *client, u8 reg, u8 value)
+{
+	return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+/* The analog voltage inputs have 16mV LSB. Since the sysfs output is
+   in mV as would be measured on the chip input pin, need to just
+   multiply/divide by 16 to translate from/to register values. */
+#define IN_TO_REG(val)		(SENSORS_LIMIT((((val) + 8) / 16), 0, 255))
+#define IN_FROM_REG(val)	((val) * 16)
+
+static u8 fan_to_reg(long rpm, int div)
+{
+	if (rpm == 0)
+		return 255;
+	rpm = SENSORS_LIMIT(rpm, 1, 1000000);
+	return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
+}
+
+#define FAN_FROM_REG(val,div)	((val) == 0   ? -1 : \
+				((val) == 255 ? 0 : \
+					1350000 / ((val) * (div))))
+
+/* for temp1 which is 8-bit resolution, LSB = 1 degree Celsius */
+#define TEMP1_FROM_REG(val)	((val) * 1000)
+#define TEMP1_TO_REG(val)	((val) <= -128000 ? -128 : \
+				 (val) >= 127000 ? 127 : \
+				 (val) < 0 ? ((val) - 500) / 1000 : \
+				 ((val) + 500) / 1000)
+
+/* for temp2 and temp3 which are 9-bit resolution, LSB = 0.5 degree Celsius
+   Assumes the top 8 bits are the integral amount and the bottom 8 bits
+   are the fractional amount. Since we only have 0.5 degree resolution,
+   the bottom 7 bits will always be zero */
+#define TEMP23_FROM_REG(val)	((val) / 128 * 500)
+#define TEMP23_TO_REG(val)	((val) <= -128000 ? 0x8000 : \
+				 (val) >= 127500 ? 0x7F80 : \
+				 (val) < 0 ? ((val) - 250) / 500 * 128 : \
+				 ((val) + 250) / 500 * 128)
+
+
+#define BEEP_MASK_TO_REG(val)		((val) & 0xffffff)
+#define BEEP_MASK_FROM_REG(val)		((val) & 0xffffff)
+
+#define DIV_FROM_REG(val)		(1 << (val))
+
+static u8 div_to_reg(int nr, long val)
+{
+	int i;
+	int max;
+
+	/* first three fan's divisor max out at 8, rest max out at 128 */
+	max = (nr < 3) ? 8 : 128;
+	val = SENSORS_LIMIT(val, 1, max) >> 1;
+	for (i = 0; i < 7; i++) {
+		if (val == 0)
+			break;
+		val >>= 1;
+	}
+	return (u8) i;
+}
+
+struct w83791d_data {
+	struct i2c_client client;
+	struct class_device *class_dev;
+	struct mutex update_lock;
+
+	char valid;			/* !=0 if following fields are valid */
+	unsigned long last_updated;	/* In jiffies */
+
+	/* array of 2 pointers to subclients */
+	struct i2c_client *lm75[2];
+
+	/* volts */
+	u8 in[NUMBER_OF_VIN];		/* Register value */
+	u8 in_max[NUMBER_OF_VIN];	/* Register value */
+	u8 in_min[NUMBER_OF_VIN];	/* Register value */
+
+	/* fans */
+	u8 fan[NUMBER_OF_FANIN];	/* Register value */
+	u8 fan_min[NUMBER_OF_FANIN];	/* Register value */
+	u8 fan_div[NUMBER_OF_FANIN];	/* Register encoding, shifted right */
+
+	/* Temperature sensors */
+
+	s8 temp1[3];		/* current, over, thyst */
+	s16 temp_add[2][3];	/* fixed point value. Top 8 bits are the
+				   integral part, bottom 8 bits are the
+				   fractional part. We only use the top
+				   9 bits as the resolution is only
+				   to the 0.5 degree C...
+				   two sensors with three values
+				   (cur, over, hyst)  */
+
+	/* Misc */
+	u32 alarms;		/* realtime status register encoding,combined */
+	u8 beep_enable;		/* Global beep enable */
+	u32 beep_mask;		/* Mask off specific beeps */
+	u8 vid;			/* Register encoding, combined */
+	u8 vrm;			/* hwmon-vid */
+};
+
+static int w83791d_attach_adapter(struct i2c_adapter *adapter);
+static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind);
+static int w83791d_detach_client(struct i2c_client *client);
+
+static int w83791d_read(struct i2c_client *client, u8 register);
+static int w83791d_write(struct i2c_client *client, u8 register, u8 value);
+static struct w83791d_data *w83791d_update_device(struct device *dev);
+
+#ifdef DEBUG
+static void w83791d_print_debug(struct w83791d_data *data, struct device *dev);
+#endif
+
+static void w83791d_init_client(struct i2c_client *client);
+
+static struct i2c_driver w83791d_driver = {
+	.driver = {
+		.name = "w83791d",
+	},
+	.attach_adapter = w83791d_attach_adapter,
+	.detach_client = w83791d_detach_client,
+};
+
+/* following are the sysfs callback functions */
+#define show_in_reg(reg) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
+			char *buf) \
+{ \
+	struct sensor_device_attribute *sensor_attr = \
+						to_sensor_dev_attr(attr); \
+	struct w83791d_data *data = w83791d_update_device(dev); \
+	int nr = sensor_attr->index; \
+	return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \
+}
+
+show_in_reg(in);
+show_in_reg(in_min);
+show_in_reg(in_max);
+
+#define store_in_reg(REG, reg) \
+static ssize_t store_in_##reg(struct device *dev, \
+				struct device_attribute *attr, \
+				const char *buf, size_t count) \
+{ \
+	struct sensor_device_attribute *sensor_attr = \
+						to_sensor_dev_attr(attr); \
+	struct i2c_client *client = to_i2c_client(dev); \
+	struct w83791d_data *data = i2c_get_clientdata(client); \
+	unsigned long val = simple_strtoul(buf, NULL, 10); \
+	int nr = sensor_attr->index; \
+	 \
+	mutex_lock(&data->update_lock); \
+	data->in_##reg[nr] = IN_TO_REG(val); \
+	w83791d_write(client, W83791D_REG_IN_##REG[nr], data->in_##reg[nr]); \
+	mutex_unlock(&data->update_lock); \
+	 \
+	return count; \
+}
+store_in_reg(MIN, min);
+store_in_reg(MAX, max);
+
+static struct sensor_device_attribute sda_in_input[] = {
+	SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
+	SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
+	SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
+	SENSOR_ATTR(in3_input, S_IRUGO, show_in, NULL, 3),
+	SENSOR_ATTR(in4_input, S_IRUGO, show_in, NULL, 4),
+	SENSOR_ATTR(in5_input, S_IRUGO, show_in, NULL, 5),
+	SENSOR_ATTR(in6_input, S_IRUGO, show_in, NULL, 6),
+	SENSOR_ATTR(in7_input, S_IRUGO, show_in, NULL, 7),
+	SENSOR_ATTR(in8_input, S_IRUGO, show_in, NULL, 8),
+	SENSOR_ATTR(in9_input, S_IRUGO, show_in, NULL, 9),
+};
+
+static struct sensor_device_attribute sda_in_min[] = {
+	SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
+	SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
+	SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
+	SENSOR_ATTR(in3_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 3),
+	SENSOR_ATTR(in4_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 4),
+	SENSOR_ATTR(in5_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 5),
+	SENSOR_ATTR(in6_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 6),
+	SENSOR_ATTR(in7_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 7),
+	SENSOR_ATTR(in8_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 8),
+	SENSOR_ATTR(in9_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 9),
+};
+
+static struct sensor_device_attribute sda_in_max[] = {
+	SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
+	SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
+	SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
+	SENSOR_ATTR(in3_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 3),
+	SENSOR_ATTR(in4_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 4),
+	SENSOR_ATTR(in5_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 5),
+	SENSOR_ATTR(in6_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 6),
+	SENSOR_ATTR(in7_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 7),
+	SENSOR_ATTR(in8_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 8),
+	SENSOR_ATTR(in9_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 9),
+};
+
+#define show_fan_reg(reg) \
+static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
+				char *buf) \
+{ \
+	struct sensor_device_attribute *sensor_attr = \
+						to_sensor_dev_attr(attr); \
+	struct w83791d_data *data = w83791d_update_device(dev); \
+	int nr = sensor_attr->index; \
+	return sprintf(buf,"%d\n", \
+		FAN_FROM_REG(data->reg[nr], DIV_FROM_REG(data->fan_div[nr]))); \
+}
+
+show_fan_reg(fan);
+show_fan_reg(fan_min);
+
+static ssize_t store_fan_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);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+	int nr = sensor_attr->index;
+
+	mutex_lock(&data->update_lock);
+	data->fan_min[nr] = fan_to_reg(val, DIV_FROM_REG(data->fan_div[nr]));
+	w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static ssize_t show_fan_div(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 w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
+}
+
+/* Note: we save and restore the fan minimum here, because its value is
+   determined in part by the fan divisor.  This follows the principle of
+   least suprise; the user doesn't expect the fan minimum to change just
+   because the divisor changed. */
+static ssize_t store_fan_div(struct device *dev, struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	int nr = sensor_attr->index;
+	unsigned long min;
+	u8 tmp_fan_div;
+	u8 fan_div_reg;
+	int indx = 0;
+	u8 keep_mask = 0;
+	u8 new_shift = 0;
+
+	/* Save fan_min */
+	min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
+
+	mutex_lock(&data->update_lock);
+	data->fan_div[nr] = div_to_reg(nr, simple_strtoul(buf, NULL, 10));
+
+	switch (nr) {
+	case 0:
+		indx = 0;
+		keep_mask = 0xcf;
+		new_shift = 4;
+		break;
+	case 1:
+		indx = 0;
+		keep_mask = 0x3f;
+		new_shift = 6;
+		break;
+	case 2:
+		indx = 1;
+		keep_mask = 0x3f;
+		new_shift = 6;
+		break;
+	case 3:
+		indx = 2;
+		keep_mask = 0xf8;
+		new_shift = 0;
+		break;
+	case 4:
+		indx = 2;
+		keep_mask = 0x8f;
+		new_shift = 4;
+		break;
+#ifdef DEBUG
+	default:
+		dev_warn(dev, "store_fan_div: Unexpected nr seen: %d\n", nr);
+		count = -EINVAL;
+		goto err_exit;
+#endif
+	}
+
+	fan_div_reg = w83791d_read(client, W83791D_REG_FAN_DIV[indx])
+			& keep_mask;
+	tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
+
+	w83791d_write(client, W83791D_REG_FAN_DIV[indx],
+				fan_div_reg | tmp_fan_div);
+
+	/* Restore fan_min */
+	data->fan_min[nr] = fan_to_reg(min, DIV_FROM_REG(data->fan_div[nr]));
+	w83791d_write(client, W83791D_REG_FAN_MIN[nr], data->fan_min[nr]);
+
+#ifdef DEBUG
+err_exit:
+#endif
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static struct sensor_device_attribute sda_fan_input[] = {
+	SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
+	SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
+	SENSOR_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2),
+	SENSOR_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3),
+	SENSOR_ATTR(fan5_input, S_IRUGO, show_fan, NULL, 4),
+};
+
+static struct sensor_device_attribute sda_fan_min[] = {
+	SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO,
+			show_fan_min, store_fan_min, 0),
+	SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO,
+			show_fan_min, store_fan_min, 1),
+	SENSOR_ATTR(fan3_min, S_IWUSR | S_IRUGO,
+			show_fan_min, store_fan_min, 2),
+	SENSOR_ATTR(fan4_min, S_IWUSR | S_IRUGO,
+			show_fan_min, store_fan_min, 3),
+	SENSOR_ATTR(fan5_min, S_IWUSR | S_IRUGO,
+			show_fan_min, store_fan_min, 4),
+};
+
+static struct sensor_device_attribute sda_fan_div[] = {
+	SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO,
+			show_fan_div, store_fan_div, 0),
+	SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO,
+			show_fan_div, store_fan_div, 1),
+	SENSOR_ATTR(fan3_div, S_IWUSR | S_IRUGO,
+			show_fan_div, store_fan_div, 2),
+	SENSOR_ATTR(fan4_div, S_IWUSR | S_IRUGO,
+			show_fan_div, store_fan_div, 3),
+	SENSOR_ATTR(fan5_div, S_IWUSR | S_IRUGO,
+			show_fan_div, store_fan_div, 4),
+};
+
+/* read/write the temperature1, includes measured value and limits */
+static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
+				char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%d\n", TEMP1_FROM_REG(data->temp1[attr->index]));
+}
+
+static ssize_t store_temp1(struct device *dev, struct device_attribute *devattr,
+				const char *buf, size_t count)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+	int nr = attr->index;
+
+	mutex_lock(&data->update_lock);
+	data->temp1[nr] = TEMP1_TO_REG(val);
+	w83791d_write(client, W83791D_REG_TEMP1[nr], data->temp1[nr]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+/* read/write temperature2-3, includes measured value and limits */
+static ssize_t show_temp23(struct device *dev, struct device_attribute *devattr,
+				char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct w83791d_data *data = w83791d_update_device(dev);
+	int nr = attr->nr;
+	int index = attr->index;
+	return sprintf(buf, "%d\n", TEMP23_FROM_REG(data->temp_add[nr][index]));
+}
+
+static ssize_t store_temp23(struct device *dev,
+				struct device_attribute *devattr,
+				const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+	int nr = attr->nr;
+	int index = attr->index;
+
+	mutex_lock(&data->update_lock);
+	data->temp_add[nr][index] = TEMP23_TO_REG(val);
+	w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2],
+				data->temp_add[nr][index] >> 8);
+	w83791d_write(client, W83791D_REG_TEMP_ADD[nr][index * 2 + 1],
+				data->temp_add[nr][index] & 0x80);
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static struct sensor_device_attribute_2 sda_temp_input[] = {
+	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp1, NULL, 0, 0),
+	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp23, NULL, 0, 0),
+	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp23, NULL, 1, 0),
+};
+
+static struct sensor_device_attribute_2 sda_temp_max[] = {
+	SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
+			show_temp1, store_temp1, 0, 1),
+	SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
+			show_temp23, store_temp23, 0, 1),
+	SENSOR_ATTR_2(temp3_max, S_IRUGO | S_IWUSR,
+			show_temp23, store_temp23, 1, 1),
+};
+
+static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
+	SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
+			show_temp1, store_temp1, 0, 2),
+	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
+			show_temp23, store_temp23, 0, 2),
+	SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO | S_IWUSR,
+			show_temp23, store_temp23, 1, 2),
+};
+
+
+/* get reatime status of all sensors items: voltage, temp, fan */
+static ssize_t show_alarms_reg(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%u\n", data->alarms);
+}
+
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms_reg, NULL);
+
+/* Beep control */
+
+#define GLOBAL_BEEP_ENABLE_SHIFT	15
+#define GLOBAL_BEEP_ENABLE_MASK		(1 << GLOBAL_BEEP_ENABLE_SHIFT)
+
+static ssize_t show_beep_enable(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%d\n", data->beep_enable);
+}
+
+static ssize_t show_beep_mask(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%d\n", BEEP_MASK_FROM_REG(data->beep_mask));
+}
+
+
+static ssize_t store_beep_mask(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+	int i;
+
+	mutex_lock(&data->update_lock);
+
+	/* The beep_enable state overrides any enabling request from
+	   the masks */
+	data->beep_mask = BEEP_MASK_TO_REG(val) & ~GLOBAL_BEEP_ENABLE_MASK;
+	data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
+
+	val = data->beep_mask;
+
+	for (i = 0; i < 3; i++) {
+		w83791d_write(client, W83791D_REG_BEEP_CTRL[i], (val & 0xff));
+		val >>= 8;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static ssize_t store_beep_enable(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	long val = simple_strtol(buf, NULL, 10);
+
+	mutex_lock(&data->update_lock);
+
+	data->beep_enable = val ? 1 : 0;
+
+	/* Keep the full mask value in sync with the current enable */
+	data->beep_mask &= ~GLOBAL_BEEP_ENABLE_MASK;
+	data->beep_mask |= (data->beep_enable << GLOBAL_BEEP_ENABLE_SHIFT);
+
+	/* The global control is in the second beep control register
+	   so only need to update that register */
+	val = (data->beep_mask >> 8) & 0xff;
+
+	w83791d_write(client, W83791D_REG_BEEP_CTRL[1], val);
+
+	mutex_unlock(&data->update_lock);
+
+	return count;
+}
+
+static struct sensor_device_attribute sda_beep_ctrl[] = {
+	SENSOR_ATTR(beep_enable, S_IRUGO | S_IWUSR,
+			show_beep_enable, store_beep_enable, 0),
+	SENSOR_ATTR(beep_mask, S_IRUGO | S_IWUSR,
+			show_beep_mask, store_beep_mask, 1)
+};
+
+/* cpu voltage regulation information */
+static ssize_t show_vid_reg(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
+}
+
+static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
+
+static ssize_t show_vrm_reg(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct w83791d_data *data = w83791d_update_device(dev);
+	return sprintf(buf, "%d\n", data->vrm);
+}
+
+static ssize_t store_vrm_reg(struct device *dev,
+				struct device_attribute *attr,
+				const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	unsigned long val = simple_strtoul(buf, NULL, 10);
+
+	/* No lock needed as vrm is internal to the driver
+	   (not read from a chip register) and so is not
+	   updated in w83791d_update_device() */
+	data->vrm = val;
+
+	return count;
+}
+
+static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
+
+/* This function is called when:
+     * w83791d_driver is inserted (when this module is loaded), for each
+       available adapter
+     * when a new adapter is inserted (and w83791d_driver is still present) */
+static int w83791d_attach_adapter(struct i2c_adapter *adapter)
+{
+	if (!(adapter->class & I2C_CLASS_HWMON))
+		return 0;
+	return i2c_probe(adapter, &addr_data, w83791d_detect);
+}
+
+
+static int w83791d_create_subclient(struct i2c_adapter *adapter,
+				struct i2c_client *client, int addr,
+				struct i2c_client **sub_cli)
+{
+	int err;
+	struct i2c_client *sub_client;
+
+	(*sub_cli) = sub_client =
+			kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	if (!(sub_client)) {
+		return -ENOMEM;
+	}
+	sub_client->addr = 0x48 + addr;
+	i2c_set_clientdata(sub_client, NULL);
+	sub_client->adapter = adapter;
+	sub_client->driver = &w83791d_driver;
+	strlcpy(sub_client->name, "w83791d subclient", I2C_NAME_SIZE);
+	if ((err = i2c_attach_client(sub_client))) {
+		dev_err(&client->dev, "subclient registration "
+			"at address 0x%x failed\n", sub_client->addr);
+		kfree(sub_client);
+		return err;
+	}
+	return 0;
+}
+
+
+static int w83791d_detect_subclients(struct i2c_adapter *adapter, int address,
+				int kind, struct i2c_client *client)
+{
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	int i, id, err;
+	u8 val;
+
+	id = i2c_adapter_id(adapter);
+	if (force_subclients[0] == id && force_subclients[1] == address) {
+		for (i = 2; i <= 3; i++) {
+			if (force_subclients[i] < 0x48 ||
+			    force_subclients[i] > 0x4f) {
+				dev_err(&client->dev,
+					"invalid subclient "
+					"address %d; must be 0x48-0x4f\n",
+					force_subclients[i]);
+				err = -ENODEV;
+				goto error_sc_0;
+			}
+		}
+		w83791d_write(client, W83791D_REG_I2C_SUBADDR,
+					(force_subclients[2] & 0x07) |
+					((force_subclients[3] & 0x07) << 4));
+	}
+
+	val = w83791d_read(client, W83791D_REG_I2C_SUBADDR);
+	if (!(val & 0x08)) {
+		err = w83791d_create_subclient(adapter, client,
+						val & 0x7, &data->lm75[0]);
+		if (err < 0)
+			goto error_sc_0;
+	}
+	if (!(val & 0x80)) {
+		if ((data->lm75[0] != NULL) &&
+				((val & 0x7) == ((val >> 4) & 0x7))) {
+			dev_err(&client->dev,
+				"duplicate addresses 0x%x, "
+				"use force_subclient\n",
+				data->lm75[0]->addr);
+			err = -ENODEV;
+			goto error_sc_1;
+		}
+		err = w83791d_create_subclient(adapter, client,
+					(val >> 4) & 0x7, &data->lm75[1]);
+		if (err < 0)
+			goto error_sc_1;
+	}
+
+	return 0;
+
+/* Undo inits in case of errors */
+
+error_sc_1:
+	if (data->lm75[0] != NULL) {
+		i2c_detach_client(data->lm75[0]);
+		kfree(data->lm75[0]);
+	}
+error_sc_0:
+	return err;
+}
+
+
+static int w83791d_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+	struct i2c_client *client;
+	struct device *dev;
+	struct w83791d_data *data;
+	int i, val1, val2;
+	int err = 0;
+	const char *client_name = "";
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		goto error0;
+	}
+
+	/* OK. For now, we presume we have a valid client. We now create the
+	   client structure, even though we cannot fill it completely yet.
+	   But it allows us to access w83791d_{read,write}_value. */
+	if (!(data = kzalloc(sizeof(struct w83791d_data), GFP_KERNEL))) {
+		err = -ENOMEM;
+		goto error0;
+	}
+
+	client = &data->client;
+	dev = &client->dev;
+	i2c_set_clientdata(client, data);
+	client->addr = address;
+	client->adapter = adapter;
+	client->driver = &w83791d_driver;
+	mutex_init(&data->update_lock);
+
+	/* Now, we do the remaining detection. */
+
+	/* The w83791d may be stuck in some other bank than bank 0. This may
+	   make reading other information impossible. Specify a force=...
+	   parameter, and the Winbond will be reset to the right bank. */
+	if (kind < 0) {
+		if (w83791d_read(client, W83791D_REG_CONFIG) & 0x80) {
+			dev_dbg(dev, "Detection failed at step 1\n");
+			goto error1;
+		}
+		val1 = w83791d_read(client, W83791D_REG_BANK);
+		val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
+		/* Check for Winbond ID if in bank 0 */
+		if (!(val1 & 0x07)) {
+			/* yes it is Bank0 */
+			if (((!(val1 & 0x80)) && (val2 != 0xa3)) ||
+			    ((val1 & 0x80) && (val2 != 0x5c))) {
+				dev_dbg(dev, "Detection failed at step 2\n");
+				goto error1;
+			}
+		}
+		/* If Winbond chip, address of chip and W83791D_REG_I2C_ADDR
+		   should match */
+		if (w83791d_read(client, W83791D_REG_I2C_ADDR) != address) {
+			dev_dbg(dev, "Detection failed at step 3\n");
+			goto error1;
+		}
+	}
+
+	/* We either have a force parameter or we have reason to
+	   believe it is a Winbond chip. Either way, we want bank 0 and
+	   Vendor ID high byte */
+	val1 = w83791d_read(client, W83791D_REG_BANK) & 0x78;
+	w83791d_write(client, W83791D_REG_BANK, val1 | 0x80);
+
+	/* Verify it is a Winbond w83791d */
+	if (kind <= 0) {
+		/* get vendor ID */
+		val2 = w83791d_read(client, W83791D_REG_CHIPMAN);
+		if (val2 != 0x5c) {	/* the vendor is NOT Winbond */
+			dev_dbg(dev, "Detection failed at step 4\n");
+			goto error1;
+		}
+		val1 = w83791d_read(client, W83791D_REG_WCHIPID);
+		if (val1 == 0x71) {
+			kind = w83791d;
+		} else {
+			if (kind == 0)
+				dev_warn(dev,
+					"w83791d: Ignoring 'force' parameter "
+					"for unknown chip at adapter %d, "
+					"address 0x%02x\n",
+					i2c_adapter_id(adapter), address);
+			goto error1;
+		}
+	}
+
+	if (kind == w83791d) {
+		client_name = "w83791d";
+	} else {
+		dev_err(dev, "w83791d: Internal error: unknown kind (%d)?!?",
+			kind);
+		goto error1;
+	}
+
+#ifdef DEBUG
+	val1 = w83791d_read(client, W83791D_REG_DID_VID4);
+	dev_dbg(dev, "Device ID version: %d.%d (0x%02x)\n",
+			(val1 >> 5) & 0x07, (val1 >> 1) & 0x0f, val1);
+#endif
+
+	/* Fill in the remaining client fields and put into the global list */
+	strlcpy(client->name, client_name, I2C_NAME_SIZE);
+
+	/* Tell the I2C layer a new client has arrived */
+	if ((err = i2c_attach_client(client)))
+		goto error1;
+
+	if ((err = w83791d_detect_subclients(adapter, address, kind, client)))
+		goto error2;
+
+	/* Initialize the chip */
+	w83791d_init_client(client);
+
+	/* If the fan_div is changed, make sure there is a rational
+	   fan_min in place */
+	for (i = 0; i < NUMBER_OF_FANIN; i++) {
+		data->fan_min[i] = w83791d_read(client, W83791D_REG_FAN_MIN[i]);
+	}
+
+	/* Register sysfs hooks */
+	data->class_dev = hwmon_device_register(dev);
+	if (IS_ERR(data->class_dev)) {
+		err = PTR_ERR(data->class_dev);
+		goto error3;
+	}
+
+	for (i = 0; i < NUMBER_OF_VIN; i++) {
+		device_create_file(dev, &sda_in_input[i].dev_attr);
+		device_create_file(dev, &sda_in_min[i].dev_attr);
+		device_create_file(dev, &sda_in_max[i].dev_attr);
+	}
+
+	for (i = 0; i < NUMBER_OF_FANIN; i++) {
+		device_create_file(dev, &sda_fan_input[i].dev_attr);
+		device_create_file(dev, &sda_fan_div[i].dev_attr);
+		device_create_file(dev, &sda_fan_min[i].dev_attr);
+	}
+
+	for (i = 0; i < NUMBER_OF_TEMPIN; i++) {
+		device_create_file(dev, &sda_temp_input[i].dev_attr);
+		device_create_file(dev, &sda_temp_max[i].dev_attr);
+		device_create_file(dev, &sda_temp_max_hyst[i].dev_attr);
+	}
+
+	device_create_file(dev, &dev_attr_alarms);
+
+	for (i = 0; i < ARRAY_SIZE(sda_beep_ctrl); i++) {
+		device_create_file(dev, &sda_beep_ctrl[i].dev_attr);
+	}
+
+	device_create_file(dev, &dev_attr_cpu0_vid);
+	device_create_file(dev, &dev_attr_vrm);
+
+	return 0;
+
+error3:
+	if (data->lm75[0] != NULL) {
+		i2c_detach_client(data->lm75[0]);
+		kfree(data->lm75[0]);
+	}
+	if (data->lm75[1] != NULL) {
+		i2c_detach_client(data->lm75[1]);
+		kfree(data->lm75[1]);
+	}
+error2:
+	i2c_detach_client(client);
+error1:
+	kfree(data);
+error0:
+	return err;
+}
+
+static int w83791d_detach_client(struct i2c_client *client)
+{
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	int err;
+
+	/* main client */
+	if (data)
+		hwmon_device_unregister(data->class_dev);
+
+	if ((err = i2c_detach_client(client)))
+		return err;
+
+	/* main client */
+	if (data)
+		kfree(data);
+	/* subclient */
+	else
+		kfree(client);
+
+	return 0;
+}
+
+static void w83791d_init_client(struct i2c_client *client)
+{
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	u8 tmp;
+	u8 old_beep;
+
+	/* The difference between reset and init is that reset
+	   does a hard reset of the chip via index 0x40, bit 7,
+	   but init simply forces certain registers to have "sane"
+	   values. The hope is that the BIOS has done the right
+	   thing (which is why the default is reset=0, init=0),
+	   but if not, reset is the hard hammer and init
+	   is the soft mallet both of which are trying to whack
+	   things into place...
+	   NOTE: The data sheet makes a distinction between
+	   "power on defaults" and "reset by MR". As far as I can tell,
+	   the hard reset puts everything into a power-on state so I'm
+	   not sure what "reset by MR" means or how it can happen.
+	   */
+	if (reset || init) {
+		/* keep some BIOS settings when we... */
+		old_beep = w83791d_read(client, W83791D_REG_BEEP_CONFIG);
+
+		if (reset) {
+			/* ... reset the chip and ... */
+			w83791d_write(client, W83791D_REG_CONFIG, 0x80);
+		}
+
+		/* ... disable power-on abnormal beep */
+		w83791d_write(client, W83791D_REG_BEEP_CONFIG, old_beep | 0x80);
+
+		/* disable the global beep (not done by hard reset) */
+		tmp = w83791d_read(client, W83791D_REG_BEEP_CTRL[1]);
+		w83791d_write(client, W83791D_REG_BEEP_CTRL[1], tmp & 0xef);
+
+		if (init) {
+			/* Make sure monitoring is turned on for add-ons */
+			tmp = w83791d_read(client, W83791D_REG_TEMP2_CONFIG);
+			if (tmp & 1) {
+				w83791d_write(client, W83791D_REG_TEMP2_CONFIG,
+					tmp & 0xfe);
+			}
+
+			tmp = w83791d_read(client, W83791D_REG_TEMP3_CONFIG);
+			if (tmp & 1) {
+				w83791d_write(client, W83791D_REG_TEMP3_CONFIG,
+					tmp & 0xfe);
+			}
+
+			/* Start monitoring */
+			tmp = w83791d_read(client, W83791D_REG_CONFIG) & 0xf7;
+			w83791d_write(client, W83791D_REG_CONFIG, tmp | 0x01);
+		}
+	}
+
+	data->vrm = vid_which_vrm();
+}
+
+static struct w83791d_data *w83791d_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct w83791d_data *data = i2c_get_clientdata(client);
+	int i, j;
+	u8 reg_array_tmp[3];
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + (HZ * 3))
+			|| !data->valid) {
+		dev_dbg(dev, "Starting w83791d device update\n");
+
+		/* Update the voltages measured value and limits */
+		for (i = 0; i < NUMBER_OF_VIN; i++) {
+			data->in[i] = w83791d_read(client,
+						W83791D_REG_IN[i]);
+			data->in_max[i] = w83791d_read(client,
+						W83791D_REG_IN_MAX[i]);
+			data->in_min[i] = w83791d_read(client,
+						W83791D_REG_IN_MIN[i]);
+		}
+
+		/* Update the fan counts and limits */
+		for (i = 0; i < NUMBER_OF_FANIN; i++) {
+			/* Update the Fan measured value and limits */
+			data->fan[i] = w83791d_read(client,
+						W83791D_REG_FAN[i]);
+			data->fan_min[i] = w83791d_read(client,
+						W83791D_REG_FAN_MIN[i]);
+		}
+
+		/* Update the fan divisor */
+		for (i = 0; i < 3; i++) {
+			reg_array_tmp[i] = w83791d_read(client,
+						W83791D_REG_FAN_DIV[i]);
+		}
+		data->fan_div[0] = (reg_array_tmp[0] >> 4) & 0x03;
+		data->fan_div[1] = (reg_array_tmp[0] >> 6) & 0x03;
+		data->fan_div[2] = (reg_array_tmp[1] >> 6) & 0x03;
+		data->fan_div[3] = reg_array_tmp[2] & 0x07;
+		data->fan_div[4] = (reg_array_tmp[2] >> 4) & 0x07;
+
+		/* Update the first temperature sensor */
+		for (i = 0; i < 3; i++) {
+			data->temp1[i] = w83791d_read(client,
+						W83791D_REG_TEMP1[i]);
+		}
+
+		/* Update the rest of the temperature sensors */
+		for (i = 0; i < 2; i++) {
+			for (j = 0; j < 3; j++) {
+				data->temp_add[i][j] =
+					(w83791d_read(client,
+					W83791D_REG_TEMP_ADD[i][j * 2]) << 8) |
+					w83791d_read(client,
+					W83791D_REG_TEMP_ADD[i][j * 2 + 1]);
+			}
+		}
+
+		/* Update the realtime status */
+		data->alarms =
+			w83791d_read(client, W83791D_REG_ALARM1) +
+			(w83791d_read(client, W83791D_REG_ALARM2) << 8) +
+			(w83791d_read(client, W83791D_REG_ALARM3) << 16);
+
+		/* Update the beep configuration information */
+		data->beep_mask =
+			w83791d_read(client, W83791D_REG_BEEP_CTRL[0]) +
+			(w83791d_read(client, W83791D_REG_BEEP_CTRL[1]) << 8) +
+			(w83791d_read(client, W83791D_REG_BEEP_CTRL[2]) << 16);
+
+		data->beep_enable =
+			(data->beep_mask >> GLOBAL_BEEP_ENABLE_SHIFT) & 0x01;
+
+		/* Update the cpu voltage information */
+		i = w83791d_read(client, W83791D_REG_VID_FANDIV);
+		data->vid = i & 0x0f;
+		data->vid |= (w83791d_read(client, W83791D_REG_DID_VID4) & 0x01)
+				<< 4;
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+#ifdef DEBUG
+	w83791d_print_debug(data, dev);
+#endif
+
+	return data;
+}
+
+#ifdef DEBUG
+static void w83791d_print_debug(struct w83791d_data *data, struct device *dev)
+{
+	int i = 0, j = 0;
+
+	dev_dbg(dev, "======Start of w83791d debug values======\n");
+	dev_dbg(dev, "%d set of Voltages: ===>\n", NUMBER_OF_VIN);
+	for (i = 0; i < NUMBER_OF_VIN; i++) {
+		dev_dbg(dev, "vin[%d] is:     0x%02x\n", i, data->in[i]);
+		dev_dbg(dev, "vin[%d] min is: 0x%02x\n", i, data->in_min[i]);
+		dev_dbg(dev, "vin[%d] max is: 0x%02x\n", i, data->in_max[i]);
+	}
+	dev_dbg(dev, "%d set of Fan Counts/Divisors: ===>\n", NUMBER_OF_FANIN);
+	for (i = 0; i < NUMBER_OF_FANIN; i++) {
+		dev_dbg(dev, "fan[%d] is:     0x%02x\n", i, data->fan[i]);
+		dev_dbg(dev, "fan[%d] min is: 0x%02x\n", i, data->fan_min[i]);
+		dev_dbg(dev, "fan_div[%d] is: 0x%02x\n", i, data->fan_div[i]);
+	}
+
+	/* temperature math is signed, but only print out the
+	   bits that matter */
+	dev_dbg(dev, "%d set of Temperatures: ===>\n", NUMBER_OF_TEMPIN);
+	for (i = 0; i < 3; i++) {
+		dev_dbg(dev, "temp1[%d] is: 0x%02x\n", i, (u8) data->temp1[i]);
+	}
+	for (i = 0; i < 2; i++) {
+		for (j = 0; j < 3; j++) {
+			dev_dbg(dev, "temp_add[%d][%d] is: 0x%04x\n", i, j,
+				(u16) data->temp_add[i][j]);
+		}
+	}
+
+	dev_dbg(dev, "Misc Information: ===>\n");
+	dev_dbg(dev, "alarm is:     0x%08x\n", data->alarms);
+	dev_dbg(dev, "beep_mask is: 0x%08x\n", data->beep_mask);
+	dev_dbg(dev, "beep_enable is: %d\n", data->beep_enable);
+	dev_dbg(dev, "vid is: 0x%02x\n", data->vid);
+	dev_dbg(dev, "vrm is: 0x%02x\n", data->vrm);
+	dev_dbg(dev, "=======End of w83791d debug values========\n");
+	dev_dbg(dev, "\n");
+}
+#endif
+
+static int __init sensors_w83791d_init(void)
+{
+	return i2c_add_driver(&w83791d_driver);
+}
+
+static void __exit sensors_w83791d_exit(void)
+{
+	i2c_del_driver(&w83791d_driver);
+}
+
+MODULE_AUTHOR("Charles Spirakis <bezaur@gmail.com>");
+MODULE_DESCRIPTION("W83791D driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_w83791d_init);
+module_exit(sensors_w83791d_exit);
diff --git a/drivers/hwmon/w83792d.c b/drivers/hwmon/w83792d.c
index 958602e2841..e407c74bda3 100644
--- a/drivers/hwmon/w83792d.c
+++ b/drivers/hwmon/w83792d.c
@@ -250,8 +250,6 @@ FAN_TO_REG(long rpm, int div)
 			: (val)) / 1000, 0, 0xff))
 #define TEMP_ADD_TO_REG_LOW(val)	((val%1000) ? 0x80 : 0x00)
 
-#define PWM_FROM_REG(val)		(val)
-#define PWM_TO_REG(val)			(SENSORS_LIMIT((val),0,255))
 #define DIV_FROM_REG(val)		(1 << (val))
 
 static inline u8
@@ -291,7 +289,6 @@ struct w83792d_data {
 	u8 pwm[7];		/* We only consider the first 3 set of pwm,
 				   although 792 chip has 7 set of pwm. */
 	u8 pwmenable[3];
-	u8 pwm_mode[7];		/* indicates PWM or DC mode: 1->PWM; 0->DC */
 	u32 alarms;		/* realtime status register encoding,combined */
 	u8 chassis;		/* Chassis status */
 	u8 chassis_clear;	/* CLR_CHS, clear chassis intrusion detection */
@@ -375,8 +372,10 @@ static ssize_t store_in_##reg (struct device *dev, \
 	u32 val; \
 	 \
 	val = simple_strtoul(buf, NULL, 10); \
+	mutex_lock(&data->update_lock); \
 	data->in_##reg[nr] = SENSORS_LIMIT(IN_TO_REG(nr, val)/4, 0, 255); \
 	w83792d_write_value(client, W83792D_REG_IN_##REG[nr], data->in_##reg[nr]); \
+	mutex_unlock(&data->update_lock); \
 	 \
 	return count; \
 }
@@ -443,9 +442,11 @@ store_fan_min(struct device *dev, struct device_attribute *attr,
 	u32 val;
 
 	val = simple_strtoul(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
 	data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
 	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr],
 				data->fan_min[nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -462,7 +463,7 @@ show_fan_div(struct device *dev, struct device_attribute *attr,
 
 /* Note: we save and restore the fan minimum here, because its value is
    determined in part by the fan divisor.  This follows the principle of
-   least suprise; the user doesn't expect the fan minimum to change just
+   least surprise; the user doesn't expect the fan minimum to change just
    because the divisor changed. */
 static ssize_t
 store_fan_div(struct device *dev, struct device_attribute *attr,
@@ -478,6 +479,7 @@ store_fan_div(struct device *dev, struct device_attribute *attr,
 	u8 tmp_fan_div;
 
 	/* Save fan_min */
+	mutex_lock(&data->update_lock);
 	min = FAN_FROM_REG(data->fan_min[nr],
 			   DIV_FROM_REG(data->fan_div[nr]));
 
@@ -493,6 +495,7 @@ store_fan_div(struct device *dev, struct device_attribute *attr,
 	/* Restore fan_min */
 	data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
 	w83792d_write_value(client, W83792D_REG_FAN_MIN[nr], data->fan_min[nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -547,10 +550,11 @@ static ssize_t store_temp1(struct device *dev, struct device_attribute *attr,
 	s32 val;
 
 	val = simple_strtol(buf, NULL, 10);
-
+	mutex_lock(&data->update_lock);
 	data->temp1[nr] = TEMP1_TO_REG(val);
 	w83792d_write_value(client, W83792D_REG_TEMP1[nr],
 		data->temp1[nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -580,13 +584,14 @@ static ssize_t store_temp23(struct device *dev, struct device_attribute *attr,
 	s32 val;
 
 	val = simple_strtol(buf, NULL, 10);
-
+	mutex_lock(&data->update_lock);
 	data->temp_add[nr][index] = TEMP_ADD_TO_REG_HIGH(val);
 	data->temp_add[nr][index+1] = TEMP_ADD_TO_REG_LOW(val);
 	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index],
 		data->temp_add[nr][index]);
 	w83792d_write_value(client, W83792D_REG_TEMP_ADD[nr][index+1],
 		data->temp_add[nr][index+1]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -627,7 +632,7 @@ show_pwm(struct device *dev, struct device_attribute *attr,
 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 	int nr = sensor_attr->index;
 	struct w83792d_data *data = w83792d_update_device(dev);
-	return sprintf(buf, "%ld\n", (long) PWM_FROM_REG(data->pwm[nr-1]));
+	return sprintf(buf, "%d\n", (data->pwm[nr] & 0x0f) << 4);
 }
 
 static ssize_t
@@ -659,14 +664,16 @@ store_pwm(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 - 1;
+	int nr = sensor_attr->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct w83792d_data *data = i2c_get_clientdata(client);
-	u32 val;
+	u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255) >> 4;
 
-	val = simple_strtoul(buf, NULL, 10);
-	data->pwm[nr] = PWM_TO_REG(val);
+	mutex_lock(&data->update_lock);
+	val |= w83792d_read_value(client, W83792D_REG_PWM[nr]) & 0xf0;
+	data->pwm[nr] = val;
 	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -683,6 +690,10 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
 	u8 fan_cfg_tmp, cfg1_tmp, cfg2_tmp, cfg3_tmp, cfg4_tmp;
 
 	val = simple_strtoul(buf, NULL, 10);
+	if (val < 1 || val > 3)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
 	switch (val) {
 	case 1:
 		data->pwmenable[nr] = 0; /* manual mode */
@@ -693,8 +704,6 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
 	case 3:
 		data->pwmenable[nr] = 1; /* thermal cruise/Smart Fan I */
 		break;
-	default:
-		return -EINVAL;
 	}
 	cfg1_tmp = data->pwmenable[0];
 	cfg2_tmp = (data->pwmenable[1]) << 2;
@@ -702,14 +711,15 @@ store_pwmenable(struct device *dev, struct device_attribute *attr,
 	cfg4_tmp = w83792d_read_value(client,W83792D_REG_FAN_CFG) & 0xc0;
 	fan_cfg_tmp = ((cfg4_tmp | cfg3_tmp) | cfg2_tmp) | cfg1_tmp;
 	w83792d_write_value(client, W83792D_REG_FAN_CFG, fan_cfg_tmp);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
 
 static struct sensor_device_attribute sda_pwm[] = {
-	SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
-	SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
-	SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3),
+	SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
+	SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
+	SENSOR_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2),
 };
 static struct sensor_device_attribute sda_pwm_enable[] = {
 	SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
@@ -728,7 +738,7 @@ show_pwm_mode(struct device *dev, struct device_attribute *attr,
 	struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
 	int nr = sensor_attr->index;
 	struct w83792d_data *data = w83792d_update_device(dev);
-	return sprintf(buf, "%d\n", data->pwm_mode[nr-1]);
+	return sprintf(buf, "%d\n", data->pwm[nr] >> 7);
 }
 
 static ssize_t
@@ -736,29 +746,35 @@ store_pwm_mode(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 - 1;
+	int nr = sensor_attr->index;
 	struct i2c_client *client = to_i2c_client(dev);
 	struct w83792d_data *data = i2c_get_clientdata(client);
 	u32 val;
-	u8 pwm_mode_mask = 0;
 
 	val = simple_strtoul(buf, NULL, 10);
-	data->pwm_mode[nr] = SENSORS_LIMIT(val, 0, 1);
-	pwm_mode_mask = w83792d_read_value(client,
-		W83792D_REG_PWM[nr]) & 0x7f;
-	w83792d_write_value(client, W83792D_REG_PWM[nr],
-		((data->pwm_mode[nr]) << 7) | pwm_mode_mask);
+	if (val != 0 && val != 1)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	data->pwm[nr] = w83792d_read_value(client, W83792D_REG_PWM[nr]);
+	if (val) {			/* PWM mode */
+		data->pwm[nr] |= 0x80;
+	} else {			/* DC mode */
+		data->pwm[nr] &= 0x7f;
+	}
+	w83792d_write_value(client, W83792D_REG_PWM[nr], data->pwm[nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
 
 static struct sensor_device_attribute sda_pwm_mode[] = {
 	SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
-		    show_pwm_mode, store_pwm_mode, 1),
+		    show_pwm_mode, store_pwm_mode, 0),
 	SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
-		    show_pwm_mode, store_pwm_mode, 2),
+		    show_pwm_mode, store_pwm_mode, 1),
 	SENSOR_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
-		    show_pwm_mode, store_pwm_mode, 3),
+		    show_pwm_mode, store_pwm_mode, 2),
 };
 
 
@@ -789,12 +805,13 @@ store_chassis_clear(struct device *dev, struct device_attribute *attr,
 	u8 temp1 = 0, temp2 = 0;
 
 	val = simple_strtoul(buf, NULL, 10);
-
+	mutex_lock(&data->update_lock);
 	data->chassis_clear = SENSORS_LIMIT(val, 0 ,1);
 	temp1 = ((data->chassis_clear) << 7) & 0x80;
 	temp2 = w83792d_read_value(client,
 		W83792D_REG_CHASSIS_CLR) & 0x7f;
 	w83792d_write_value(client, W83792D_REG_CHASSIS_CLR, temp1 | temp2);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -827,10 +844,12 @@ store_thermal_cruise(struct device *dev, struct device_attribute *attr,
 	val = simple_strtoul(buf, NULL, 10);
 	target_tmp = val;
 	target_tmp = target_tmp & 0x7f;
+	mutex_lock(&data->update_lock);
 	target_mask = w83792d_read_value(client, W83792D_REG_THERMAL[nr]) & 0x80;
 	data->thermal_cruise[nr] = SENSORS_LIMIT(target_tmp, 0, 255);
 	w83792d_write_value(client, W83792D_REG_THERMAL[nr],
 		(data->thermal_cruise[nr]) | target_mask);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -867,6 +886,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
 	u8 tol_tmp, tol_mask;
 
 	val = simple_strtoul(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
 	tol_mask = w83792d_read_value(client,
 		W83792D_REG_TOLERANCE[nr]) & ((nr == 1) ? 0x0f : 0xf0);
 	tol_tmp = SENSORS_LIMIT(val, 0, 15);
@@ -877,6 +897,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr,
 	}
 	w83792d_write_value(client, W83792D_REG_TOLERANCE[nr],
 		tol_mask | tol_tmp);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -915,11 +936,13 @@ store_sf2_point(struct device *dev, struct device_attribute *attr,
 	u8 mask_tmp = 0;
 
 	val = simple_strtoul(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
 	data->sf2_points[index][nr] = SENSORS_LIMIT(val, 0, 127);
 	mask_tmp = w83792d_read_value(client,
 					W83792D_REG_POINTS[index][nr]) & 0x80;
 	w83792d_write_value(client, W83792D_REG_POINTS[index][nr],
 		mask_tmp|data->sf2_points[index][nr]);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -979,6 +1002,7 @@ store_sf2_level(struct device *dev, struct device_attribute *attr,
 	u8 mask_tmp=0, level_tmp=0;
 
 	val = simple_strtoul(buf, NULL, 10);
+	mutex_lock(&data->update_lock);
 	data->sf2_levels[index][nr] = SENSORS_LIMIT((val * 15) / 100, 0, 15);
 	mask_tmp = w83792d_read_value(client, W83792D_REG_LEVELS[index][nr])
 		& ((nr==3) ? 0xf0 : 0x0f);
@@ -988,6 +1012,7 @@ store_sf2_level(struct device *dev, struct device_attribute *attr,
 		level_tmp = data->sf2_levels[index][nr] << 4;
 	}
 	w83792d_write_value(client, W83792D_REG_LEVELS[index][nr], level_tmp | mask_tmp);
+	mutex_unlock(&data->update_lock);
 
 	return count;
 }
@@ -1373,7 +1398,7 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
 	struct i2c_client *client = to_i2c_client(dev);
 	struct w83792d_data *data = i2c_get_clientdata(client);
 	int i, j;
-	u8 reg_array_tmp[4], pwm_array_tmp[7], reg_tmp;
+	u8 reg_array_tmp[4], reg_tmp;
 
 	mutex_lock(&data->update_lock);
 
@@ -1402,10 +1427,8 @@ static struct w83792d_data *w83792d_update_device(struct device *dev)
 			data->fan_min[i] = w83792d_read_value(client,
 						W83792D_REG_FAN_MIN[i]);
 			/* Update the PWM/DC Value and PWM/DC flag */
-			pwm_array_tmp[i] = w83792d_read_value(client,
+			data->pwm[i] = w83792d_read_value(client,
 						W83792D_REG_PWM[i]);
-			data->pwm[i] = pwm_array_tmp[i] & 0x0f;
-			data->pwm_mode[i] = pwm_array_tmp[i] >> 7;
 		}
 
 		reg_tmp = w83792d_read_value(client, W83792D_REG_FAN_CFG);
@@ -1513,7 +1536,6 @@ static void w83792d_print_debug(struct w83792d_data *data, struct device *dev)
 		dev_dbg(dev, "fan[%d] is: 0x%x\n", i, data->fan[i]);
 		dev_dbg(dev, "fan[%d] min is: 0x%x\n", i, data->fan_min[i]);
 		dev_dbg(dev, "pwm[%d]     is: 0x%x\n", i, data->pwm[i]);
-		dev_dbg(dev, "pwm_mode[%d] is: 0x%x\n", i, data->pwm_mode[i]);
 	}
 	dev_dbg(dev, "3 set of Temperatures: =====>\n");
 	for (i=0; i<3; i++) {
author	Dave Jones <davej@redhat.com>	2006-06-29 16:01:54 -0400
committer	Dave Jones <davej@redhat.com>	2006-06-29 16:01:54 -0400
commit	55b4d6a52195a8f277ffddf755ddaff359878f41 (patch)
tree	06a3183a562f8da4688f65023f7a18dcad702956 /drivers/hwmon
parent	adf8a287150667feb5747f8beade62acacc17d4e (diff)
parent	1f1332f727c3229eb2166a83fec5d3de6a73dce2 (diff)