Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: New driver for the SMSC EMC6W201
  hwmon: (abituguru) Depend on DMI
  hwmon: (it87) Use request_muxed_region
  hwmon: (sch5627) Trigger Vbat measurements
  hwmon: (sch5627) Add sch5627_send_cmd function
  i8k: Integrate with the hwmon subsystem
  hwmon: (max6650) Properly support the MAX6650
  hwmon: (max6650) Drop device detection
  Move ACPI power meter driver to hwmon
  hwmon: (f71882fg) Add support for F71808A
  hwmon: (f71882fg) Split has_beep in fan_has_beep and temp_has_beep
  hwmon: (asc7621) Drop duplicate dependency
  hwmon: (jc42) Change detection class
  hwmon: Add driver for AMD family 15h processor power information
  hwmon: (k10temp) Add support for Fam15h (Bulldozer)
  hwmon: Use helper functions to set and get driver data
  i8k: Avoid lahf in 64-bit code

21 files changed, 1195 insertions, 143 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 3a17ca5fff6f..bc2218db5ba9 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -73,17 +73,6 @@ config ACPI_PROCFS_POWER
 
 	  Say N to delete power /proc/acpi/ directories that have moved to /sys/
 
-config ACPI_POWER_METER
-	tristate "ACPI 4.0 power meter"
-	depends on HWMON
-	help
-	  This driver exposes ACPI 4.0 power meters as hardware monitoring
-	  devices.  Say Y (or M) if you have a computer with ACPI 4.0 firmware
-	  and a power meter.
-
-	  To compile this driver as a module, choose M here:
-	  the module will be called power-meter.
-
 config ACPI_EC_DEBUGFS
 	tristate "EC read/write access through /sys/kernel/debug/ec"
 	default n
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index d113fa5100b2..b66fbb2fc85f 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -59,7 +59,6 @@ obj-$(CONFIG_ACPI_HOTPLUG_MEMORY) += acpi_memhotplug.o
 obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
 obj-$(CONFIG_ACPI_SBS)		+= sbshc.o
 obj-$(CONFIG_ACPI_SBS)		+= sbs.o
-obj-$(CONFIG_ACPI_POWER_METER)	+= power_meter.o
 obj-$(CONFIG_ACPI_HED)		+= hed.o
 obj-$(CONFIG_ACPI_EC_DEBUGFS)	+= ec_sys.o
 
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c
index d72433f2d310..6e40072fbf67 100644
--- a/drivers/char/i8k.c
+++ b/drivers/char/i8k.c
@@ -5,6 +5,9 @@
  *
  * Copyright (C) 2001  Massimo Dal Zotto <dz@debian.org>
  *
+ * Hwmon integration:
+ * Copyright (C) 2011  Jean Delvare <khali@linux-fr.org>
+ *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2, or (at your option) any
@@ -24,6 +27,8 @@
 #include <linux/dmi.h>
 #include <linux/capability.h>
 #include <linux/mutex.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 
@@ -58,6 +63,7 @@
 
 static DEFINE_MUTEX(i8k_mutex);
 static char bios_version[4];
+static struct device *i8k_hwmon_dev;
 
 MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
 MODULE_DESCRIPTION("Driver for accessing SMM BIOS on Dell laptops");
@@ -139,8 +145,8 @@ static int i8k_smm(struct smm_regs *regs)
 		"movl %%edi,20(%%rax)\n\t"
 		"popq %%rdx\n\t"
 		"movl %%edx,0(%%rax)\n\t"
-		"lahf\n\t"
-		"shrl $8,%%eax\n\t"
+		"pushfq\n\t"
+		"popq %%rax\n\t"
 		"andl $1,%%eax\n"
 		:"=a"(rc)
 		:    "a"(regs)
@@ -455,6 +461,152 @@ static int i8k_open_fs(struct inode *inode, struct file *file)
 	return single_open(file, i8k_proc_show, NULL);
 }
 
+
+/*
+ * Hwmon interface
+ */
+
+static ssize_t i8k_hwmon_show_temp(struct device *dev,
+				   struct device_attribute *devattr,
+				   char *buf)
+{
+	int cpu_temp;
+
+	cpu_temp = i8k_get_temp(0);
+	if (cpu_temp < 0)
+		return cpu_temp;
+	return sprintf(buf, "%d\n", cpu_temp * 1000);
+}
+
+static ssize_t i8k_hwmon_show_fan(struct device *dev,
+				  struct device_attribute *devattr,
+				  char *buf)
+{
+	int index = to_sensor_dev_attr(devattr)->index;
+	int fan_speed;
+
+	fan_speed = i8k_get_fan_speed(index);
+	if (fan_speed < 0)
+		return fan_speed;
+	return sprintf(buf, "%d\n", fan_speed);
+}
+
+static ssize_t i8k_hwmon_show_label(struct device *dev,
+				    struct device_attribute *devattr,
+				    char *buf)
+{
+	static const char *labels[4] = {
+		"i8k",
+		"CPU",
+		"Left Fan",
+		"Right Fan",
+	};
+	int index = to_sensor_dev_attr(devattr)->index;
+
+	return sprintf(buf, "%s\n", labels[index]);
+}
+
+static DEVICE_ATTR(temp1_input, S_IRUGO, i8k_hwmon_show_temp, NULL);
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
+			  I8K_FAN_LEFT);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
+			  I8K_FAN_RIGHT);
+static SENSOR_DEVICE_ATTR(name, S_IRUGO, i8k_hwmon_show_label, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, i8k_hwmon_show_label, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan1_label, S_IRUGO, i8k_hwmon_show_label, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan2_label, S_IRUGO, i8k_hwmon_show_label, NULL, 3);
+
+static void i8k_hwmon_remove_files(struct device *dev)
+{
+	device_remove_file(dev, &dev_attr_temp1_input);
+	device_remove_file(dev, &sensor_dev_attr_fan1_input.dev_attr);
+	device_remove_file(dev, &sensor_dev_attr_fan2_input.dev_attr);
+	device_remove_file(dev, &sensor_dev_attr_temp1_label.dev_attr);
+	device_remove_file(dev, &sensor_dev_attr_fan1_label.dev_attr);
+	device_remove_file(dev, &sensor_dev_attr_fan2_label.dev_attr);
+	device_remove_file(dev, &sensor_dev_attr_name.dev_attr);
+}
+
+static int __init i8k_init_hwmon(void)
+{
+	int err;
+
+	i8k_hwmon_dev = hwmon_device_register(NULL);
+	if (IS_ERR(i8k_hwmon_dev)) {
+		err = PTR_ERR(i8k_hwmon_dev);
+		i8k_hwmon_dev = NULL;
+		printk(KERN_ERR "i8k: hwmon registration failed (%d)\n", err);
+		return err;
+	}
+
+	/* Required name attribute */
+	err = device_create_file(i8k_hwmon_dev,
+				 &sensor_dev_attr_name.dev_attr);
+	if (err)
+		goto exit_unregister;
+
+	/* CPU temperature attributes, if temperature reading is OK */
+	err = i8k_get_temp(0);
+	if (err < 0) {
+		dev_dbg(i8k_hwmon_dev,
+			"Not creating temperature attributes (%d)\n", err);
+	} else {
+		err = device_create_file(i8k_hwmon_dev, &dev_attr_temp1_input);
+		if (err)
+			goto exit_remove_files;
+		err = device_create_file(i8k_hwmon_dev,
+					 &sensor_dev_attr_temp1_label.dev_attr);
+		if (err)
+			goto exit_remove_files;
+	}
+
+	/* Left fan attributes, if left fan is present */
+	err = i8k_get_fan_status(I8K_FAN_LEFT);
+	if (err < 0) {
+		dev_dbg(i8k_hwmon_dev,
+			"Not creating %s fan attributes (%d)\n", "left", err);
+	} else {
+		err = device_create_file(i8k_hwmon_dev,
+					 &sensor_dev_attr_fan1_input.dev_attr);
+		if (err)
+			goto exit_remove_files;
+		err = device_create_file(i8k_hwmon_dev,
+					 &sensor_dev_attr_fan1_label.dev_attr);
+		if (err)
+			goto exit_remove_files;
+	}
+
+	/* Right fan attributes, if right fan is present */
+	err = i8k_get_fan_status(I8K_FAN_RIGHT);
+	if (err < 0) {
+		dev_dbg(i8k_hwmon_dev,
+			"Not creating %s fan attributes (%d)\n", "right", err);
+	} else {
+		err = device_create_file(i8k_hwmon_dev,
+					 &sensor_dev_attr_fan2_input.dev_attr);
+		if (err)
+			goto exit_remove_files;
+		err = device_create_file(i8k_hwmon_dev,
+					 &sensor_dev_attr_fan2_label.dev_attr);
+		if (err)
+			goto exit_remove_files;
+	}
+
+	return 0;
+
+ exit_remove_files:
+	i8k_hwmon_remove_files(i8k_hwmon_dev);
+ exit_unregister:
+	hwmon_device_unregister(i8k_hwmon_dev);
+	return err;
+}
+
+static void __exit i8k_exit_hwmon(void)
+{
+	i8k_hwmon_remove_files(i8k_hwmon_dev);
+	hwmon_device_unregister(i8k_hwmon_dev);
+}
+
 static struct dmi_system_id __initdata i8k_dmi_table[] = {
 	{
 		.ident = "Dell Inspiron",
@@ -580,6 +732,7 @@ static int __init i8k_probe(void)
 static int __init i8k_init(void)
 {
 	struct proc_dir_entry *proc_i8k;
+	int err;
 
 	/* Are we running on an supported laptop? */
 	if (i8k_probe())
@@ -590,15 +743,24 @@ static int __init i8k_init(void)
 	if (!proc_i8k)
 		return -ENOENT;
 
+	err = i8k_init_hwmon();
+	if (err)
+		goto exit_remove_proc;
+
 	printk(KERN_INFO
 	       "Dell laptop SMM driver v%s Massimo Dal Zotto (dz@debian.org)\n",
 	       I8K_VERSION);
 
 	return 0;
+
+ exit_remove_proc:
+	remove_proc_entry("i8k", NULL);
+	return err;
 }
 
 static void __exit i8k_exit(void)
 {
+	i8k_exit_hwmon();
 	remove_proc_entry("i8k", NULL);
 }
 
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 43221beb9e97..16db83c83c8b 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -41,7 +41,7 @@ comment "Native drivers"
 
 config SENSORS_ABITUGURU
 	tristate "Abit uGuru (rev 1 & 2)"
-	depends on X86 && EXPERIMENTAL
+	depends on X86 && DMI && EXPERIMENTAL
 	help
 	  If you say yes here you get support for the sensor part of the first
 	  and second revision of the Abit uGuru chip. The voltage and frequency
@@ -56,7 +56,7 @@ config SENSORS_ABITUGURU
 
 config SENSORS_ABITUGURU3
 	tristate "Abit uGuru (rev 3)"
-	depends on X86 && EXPERIMENTAL
+	depends on X86 && DMI && EXPERIMENTAL
 	help
 	  If you say yes here you get support for the sensor part of the
 	  third revision of the Abit uGuru chip. Only reading the sensors
@@ -213,7 +213,7 @@ config SENSORS_ADT7475
 
 config SENSORS_ASC7621
 	tristate "Andigilog aSC7621"
-	depends on HWMON && I2C
+	depends on I2C
 	help
 	  If you say yes here you get support for the aSC7621
 	  family of SMBus sensors chip found on most Intel X38, X48, X58,
@@ -237,17 +237,27 @@ config SENSORS_K8TEMP
 	  will be called k8temp.
 
 config SENSORS_K10TEMP
-	tristate "AMD Family 10h/11h/12h/14h temperature sensor"
+	tristate "AMD Family 10h+ temperature sensor"
 	depends on X86 && PCI
 	help
 	  If you say yes here you get support for the temperature
 	  sensor(s) inside your CPU. Supported are later revisions of
 	  the AMD Family 10h and all revisions of the AMD Family 11h,
-	  12h (Llano), and 14h (Brazos) microarchitectures.
+	  12h (Llano), 14h (Brazos) and 15h (Bulldozer) microarchitectures.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called k10temp.
 
+config SENSORS_FAM15H_POWER
+	tristate "AMD Family 15h processor power"
+	depends on X86 && PCI
+	help
+	  If you say yes here you get support for processor power
+	  information of your AMD family 15h CPU.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called fam15h_power.
+
 config SENSORS_ASB100
 	tristate "Asus ASB100 Bach"
 	depends on X86 && I2C && EXPERIMENTAL
@@ -319,7 +329,7 @@ config SENSORS_F71882FG
 	  If you say yes here you get support for hardware monitoring
 	  features of many Fintek Super-I/O (LPC) chips. The currently
 	  supported chips are:
-	    F71808E
+	    F71808E/A
 	    F71858FG
 	    F71862FG
 	    F71863FG
@@ -978,6 +988,16 @@ config SENSORS_EMC2103
 	  This driver can also be built as a module.  If so, the module
 	  will be called emc2103.
 
+config SENSORS_EMC6W201
+	tristate "SMSC EMC6W201"
+	depends on I2C
+	help
+	  If you say yes here you get support for the SMSC EMC6W201
+	  hardware monitoring chip.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called emc6w201.
+
 config SENSORS_SMSC47M1
 	tristate "SMSC LPC47M10x and compatibles"
 	help
@@ -1341,6 +1361,16 @@ if ACPI
 
 comment "ACPI drivers"
 
+config SENSORS_ACPI_POWER
+	tristate "ACPI 4.0 power meter"
+	help
+	  This driver exposes ACPI 4.0 power meters as hardware monitoring
+	  devices.  Say Y (or M) if you have a computer with ACPI 4.0 firmware
+	  and a power meter.
+
+	  To compile this driver as a module, choose M here:
+	  the module will be called acpi_power_meter.
+
 config SENSORS_ATK0110
 	tristate "ASUS ATK0110"
 	depends on X86 && EXPERIMENTAL
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 28e8d52f6379..28061cfa0cdb 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_HWMON)		+= hwmon.o
 obj-$(CONFIG_HWMON_VID)		+= hwmon-vid.o
 
 # APCI drivers
+obj-$(CONFIG_SENSORS_ACPI_POWER) += acpi_power_meter.o
 obj-$(CONFIG_SENSORS_ATK0110)	+= asus_atk0110.o
 
 # Native drivers
@@ -45,9 +46,11 @@ obj-$(CONFIG_SENSORS_DS620)	+= ds620.o
 obj-$(CONFIG_SENSORS_DS1621)	+= ds1621.o
 obj-$(CONFIG_SENSORS_EMC1403)	+= emc1403.o
 obj-$(CONFIG_SENSORS_EMC2103)	+= emc2103.o
+obj-$(CONFIG_SENSORS_EMC6W201)	+= emc6w201.o
 obj-$(CONFIG_SENSORS_F71805F)	+= f71805f.o
 obj-$(CONFIG_SENSORS_F71882FG)	+= f71882fg.o
 obj-$(CONFIG_SENSORS_F75375S)	+= f75375s.o
+obj-$(CONFIG_SENSORS_FAM15H_POWER) += fam15h_power.o
 obj-$(CONFIG_SENSORS_FSCHMD)	+= fschmd.o
 obj-$(CONFIG_SENSORS_G760A)	+= g760a.o
 obj-$(CONFIG_SENSORS_GL518SM)	+= gl518sm.o
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c
index e7d4c4687f02..65a35cf5b3c5 100644
--- a/drivers/hwmon/abituguru.c
+++ b/drivers/hwmon/abituguru.c
@@ -1448,15 +1448,12 @@ static int __init abituguru_init(void)
 {
 	int address, err;
 	struct resource res = { .flags = IORESOURCE_IO };
-
-#ifdef CONFIG_DMI
 	const char *board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
 
 	/* safety check, refuse to load on non Abit motherboards */
 	if (!force && (!board_vendor ||
 			strcmp(board_vendor, "http://www.abit.com.tw/")))
 		return -ENODEV;
-#endif
 
 	address = abituguru_detect();
 	if (address < 0)
diff --git a/drivers/hwmon/abituguru3.c b/drivers/hwmon/abituguru3.c
index e89d572e3320..d30855a75786 100644
--- a/drivers/hwmon/abituguru3.c
+++ b/drivers/hwmon/abituguru3.c
@@ -1119,8 +1119,6 @@ static struct platform_driver abituguru3_driver = {
 	.resume = abituguru3_resume
 };
 
-#ifdef CONFIG_DMI
-
 static int __init abituguru3_dmi_detect(void)
 {
 	const char *board_vendor, *board_name;
@@ -1159,15 +1157,6 @@ static int __init abituguru3_dmi_detect(void)
 	return 1;
 }
 
-#else /* !CONFIG_DMI */
-
-static inline int abituguru3_dmi_detect(void)
-{
-	return 1;
-}
-
-#endif /* CONFIG_DMI */
-
 /* FIXME: Manual detection should die eventually; we need to collect stable
  *        DMI model names first before we can rely entirely on CONFIG_DMI.
  */
@@ -1216,10 +1205,8 @@ static int __init abituguru3_init(void)
 		if (err)
 			return err;
 
-#ifdef CONFIG_DMI
 		pr_warn("this motherboard was not detected using DMI. "
 			"Please send the output of \"dmidecode\" to the abituguru3 maintainer (see MAINTAINERS)\n");
-#endif
 	}
 
 	err = platform_driver_register(&abituguru3_driver);
diff --git a/drivers/acpi/power_meter.c b/drivers/hwmon/acpi_power_meter.c
index 66f67293341e..66f67293341e 100644
--- a/drivers/acpi/power_meter.c
+++ b/drivers/hwmon/acpi_power_meter.c
diff --git a/drivers/hwmon/adcxx.c b/drivers/hwmon/adcxx.c
index fbdc7655303b..b2cacbe707a8 100644
--- a/drivers/hwmon/adcxx.c
+++ b/drivers/hwmon/adcxx.c
@@ -62,7 +62,7 @@ static ssize_t adcxx_read(struct device *dev,
 {
 	struct spi_device *spi = to_spi_device(dev);
 	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
-	struct adcxx *adc = dev_get_drvdata(&spi->dev);
+	struct adcxx *adc = spi_get_drvdata(spi);
 	u8 tx_buf[2];
 	u8 rx_buf[2];
 	int status;
@@ -105,7 +105,7 @@ static ssize_t adcxx_show_max(struct device *dev,
 		struct device_attribute *devattr, char *buf)
 {
 	struct spi_device *spi = to_spi_device(dev);
-	struct adcxx *adc = dev_get_drvdata(&spi->dev);
+	struct adcxx *adc = spi_get_drvdata(spi);
 	u32 reference;
 
 	if (mutex_lock_interruptible(&adc->lock))
@@ -122,7 +122,7 @@ static ssize_t adcxx_set_max(struct device *dev,
 	struct device_attribute *devattr, const char *buf, size_t count)
 {
 	struct spi_device *spi = to_spi_device(dev);
-	struct adcxx *adc = dev_get_drvdata(&spi->dev);
+	struct adcxx *adc = spi_get_drvdata(spi);
 	unsigned long value;
 
 	if (strict_strtoul(buf, 10, &value))
@@ -142,7 +142,7 @@ static ssize_t adcxx_show_name(struct device *dev, struct device_attribute
 			      *devattr, char *buf)
 {
 	struct spi_device *spi = to_spi_device(dev);
-	struct adcxx *adc = dev_get_drvdata(&spi->dev);
+	struct adcxx *adc = spi_get_drvdata(spi);
 
 	return sprintf(buf, "adcxx%ds\n", adc->channels);
 }
@@ -182,7 +182,7 @@ static int __devinit adcxx_probe(struct spi_device *spi)
 
 	mutex_lock(&adc->lock);
 
-	dev_set_drvdata(&spi->dev, adc);
+	spi_set_drvdata(spi, adc);
 
 	for (i = 0; i < 3 + adc->channels; i++) {
 		status = device_create_file(&spi->dev, &ad_input[i].dev_attr);
@@ -206,7 +206,7 @@ out_err:
 	for (i--; i >= 0; i--)
 		device_remove_file(&spi->dev, &ad_input[i].dev_attr);
 
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 	mutex_unlock(&adc->lock);
 	kfree(adc);
 	return status;
@@ -214,7 +214,7 @@ out_err:
 
 static int __devexit adcxx_remove(struct spi_device *spi)
 {
-	struct adcxx *adc = dev_get_drvdata(&spi->dev);
+	struct adcxx *adc = spi_get_drvdata(spi);
 	int i;
 
 	mutex_lock(&adc->lock);
@@ -222,7 +222,7 @@ static int __devexit adcxx_remove(struct spi_device *spi)
 	for (i = 0; i < 3 + adc->channels; i++)
 		device_remove_file(&spi->dev, &ad_input[i].dev_attr);
 
-	dev_set_drvdata(&spi->dev, NULL);
+	spi_set_drvdata(spi, NULL);
 	mutex_unlock(&adc->lock);
 	kfree(adc);
 
diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c
new file mode 100644
index 000000000000..e0ef32378ac6
--- /dev/null
+++ b/drivers/hwmon/emc6w201.c
@@ -0,0 +1,539 @@
+/*
+ * emc6w201.c - Hardware monitoring driver for the SMSC EMC6W201
+ * Copyright (C) 2011  Jean Delvare <khali@linux-fr.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * 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/delay.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/err.h>
+#include <linux/mutex.h>
+
+/*
+ * Addresses to scan
+ */
+
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+
+/*
+ * The EMC6W201 registers
+ */
+
+#define EMC6W201_REG_IN(nr)		(0x20 + (nr))
+#define EMC6W201_REG_TEMP(nr)		(0x26 + (nr))
+#define EMC6W201_REG_FAN(nr)		(0x2C + (nr) * 2)
+#define EMC6W201_REG_COMPANY		0x3E
+#define EMC6W201_REG_VERSTEP		0x3F
+#define EMC6W201_REG_CONFIG		0x40
+#define EMC6W201_REG_IN_LOW(nr)		(0x4A + (nr) * 2)
+#define EMC6W201_REG_IN_HIGH(nr)	(0x4B + (nr) * 2)
+#define EMC6W201_REG_TEMP_LOW(nr)	(0x56 + (nr) * 2)
+#define EMC6W201_REG_TEMP_HIGH(nr)	(0x57 + (nr) * 2)
+#define EMC6W201_REG_FAN_MIN(nr)	(0x62 + (nr) * 2)
+
+enum { input, min, max } subfeature;
+
+/*
+ * Per-device data
+ */
+
+struct emc6w201_data {
+	struct device *hwmon_dev;
+	struct mutex update_lock;
+	char valid; /* zero until following fields are valid */
+	unsigned long last_updated; /* in jiffies */
+
+	/* registers values */
+	u8 in[3][6];
+	s8 temp[3][6];
+	u16 fan[2][5];
+};
+
+/*
+ * Combine LSB and MSB registers in a single value
+ * Locking: must be called with data->update_lock held
+ */
+static u16 emc6w201_read16(struct i2c_client *client, u8 reg)
+{
+	int lsb, msb;
+
+	lsb = i2c_smbus_read_byte_data(client, reg);
+	msb = i2c_smbus_read_byte_data(client, reg + 1);
+	if (lsb < 0 || msb < 0) {
+		dev_err(&client->dev, "16-bit read failed at 0x%02x\n", reg);
+		return 0xFFFF;	/* Arbitrary value */
+	}
+
+	return (msb << 8) | lsb;
+}
+
+/*
+ * Write 16-bit value to LSB and MSB registers
+ * Locking: must be called with data->update_lock held
+ */
+static int emc6w201_write16(struct i2c_client *client, u8 reg, u16 val)
+{
+	int err;
+
+	err = i2c_smbus_write_byte_data(client, reg, val & 0xff);
+	if (!err)
+		err = i2c_smbus_write_byte_data(client, reg + 1, val >> 8);
+	if (err < 0)
+		dev_err(&client->dev, "16-bit write failed at 0x%02x\n", reg);
+
+	return err;
+}
+
+static struct emc6w201_data *emc6w201_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct emc6w201_data *data = i2c_get_clientdata(client);
+	int nr;
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+		for (nr = 0; nr < 6; nr++) {
+			data->in[input][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_IN(nr));
+			data->in[min][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_IN_LOW(nr));
+			data->in[max][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_IN_HIGH(nr));
+		}
+
+		for (nr = 0; nr < 6; nr++) {
+			data->temp[input][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_TEMP(nr));
+			data->temp[min][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_TEMP_LOW(nr));
+			data->temp[max][nr] =
+				i2c_smbus_read_byte_data(client,
+						EMC6W201_REG_TEMP_HIGH(nr));
+		}
+
+		for (nr = 0; nr < 5; nr++) {
+			data->fan[input][nr] =
+				emc6w201_read16(client,
+						EMC6W201_REG_FAN(nr));
+			data->fan[min][nr] =
+				emc6w201_read16(client,
+						EMC6W201_REG_FAN_MIN(nr));
+		}
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+
+	mutex_unlock(&data->update_lock);
+
+	return data;
+}
+
+/*
+ * Sysfs callback functions
+ */
+
+static const u16 nominal_mv[6] = { 2500, 1500, 3300, 5000, 1500, 1500 };
+
+static ssize_t show_in(struct device *dev, struct device_attribute *devattr,
+	char *buf)
+{
+	struct emc6w201_data *data = emc6w201_update_device(dev);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+
+	return sprintf(buf, "%u\n",
+		       (unsigned)data->in[sf][nr] * nominal_mv[nr] / 0xC0);
+}
+
+static ssize_t set_in(struct device *dev, struct device_attribute *devattr,
+		      const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct emc6w201_data *data = i2c_get_clientdata(client);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+	int err;
+	long val;
+	u8 reg;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err < 0)
+		return err;
+
+	val = DIV_ROUND_CLOSEST(val * 0xC0, nominal_mv[nr]);
+	reg = (sf == min) ? EMC6W201_REG_IN_LOW(nr)
+			  : EMC6W201_REG_IN_HIGH(nr);
+
+	mutex_lock(&data->update_lock);
+	data->in[sf][nr] = SENSORS_LIMIT(val, 0, 255);
+	err = i2c_smbus_write_byte_data(client, reg, data->in[sf][nr]);
+	mutex_unlock(&data->update_lock);
+
+	return err < 0 ? err : count;
+}
+
+static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
+	char *buf)
+{
+	struct emc6w201_data *data = emc6w201_update_device(dev);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+
+	return sprintf(buf, "%d\n", (int)data->temp[sf][nr] * 1000);
+}
+
+static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
+			const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct emc6w201_data *data = i2c_get_clientdata(client);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+	int err;
+	long val;
+	u8 reg;
+
+	err = strict_strtol(buf, 10, &val);
+	if (err < 0)
+		return err;
+
+	val /= 1000;
+	reg = (sf == min) ? EMC6W201_REG_TEMP_LOW(nr)
+			  : EMC6W201_REG_TEMP_HIGH(nr);
+
+	mutex_lock(&data->update_lock);
+	data->temp[sf][nr] = SENSORS_LIMIT(val, -127, 128);
+	err = i2c_smbus_write_byte_data(client, reg, data->temp[sf][nr]);
+	mutex_unlock(&data->update_lock);
+
+	return err < 0 ? err : count;
+}
+
+static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
+	char *buf)
+{
+	struct emc6w201_data *data = emc6w201_update_device(dev);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+	unsigned rpm;
+
+	if (data->fan[sf][nr] == 0 || data->fan[sf][nr] == 0xFFFF)
+		rpm = 0;
+	else
+		rpm = 5400000U / data->fan[sf][nr];
+
+	return sprintf(buf, "%u\n", rpm);
+}
+
+static ssize_t set_fan(struct device *dev, struct device_attribute *devattr,
+		       const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct emc6w201_data *data = i2c_get_clientdata(client);
+	int sf = to_sensor_dev_attr_2(devattr)->index;
+	int nr = to_sensor_dev_attr_2(devattr)->nr;
+	int err;
+	unsigned long val;
+
+	err = strict_strtoul(buf, 10, &val);
+	if (err < 0)
+		return err;
+
+	if (val == 0) {
+		val = 0xFFFF;
+	} else {
+		val = DIV_ROUND_CLOSEST(5400000U, val);
+		val = SENSORS_LIMIT(val, 0, 0xFFFE);
+	}
+
+	mutex_lock(&data->update_lock);
+	data->fan[sf][nr] = val;
+	err = emc6w201_write16(client, EMC6W201_REG_FAN_MIN(nr),
+			       data->fan[sf][nr]);
+	mutex_unlock(&data->update_lock);
+
+	return err < 0 ? err : count;
+}
+
+static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, input);
+static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    0, min);
+static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    0, max);
+static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, input);
+static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    1, min);
+static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    1, max);
+static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, input);
+static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    2, min);
+static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    2, max);
+static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, input);
+static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    3, min);
+static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    3, max);
+static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, input);
+static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    4, min);
+static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    4, max);
+static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, input);
+static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in,
+			    5, min);
+static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in,
+			    5, max);
+
+static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, input);
+static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    0, min);
+static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    0, max);
+static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, input);
+static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    1, min);
+static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    1, max);
+static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, input);
+static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    2, min);
+static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    2, max);
+static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 3, input);
+static SENSOR_DEVICE_ATTR_2(temp4_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    3, min);
+static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    3, max);
+static SENSOR_DEVICE_ATTR_2(temp5_input, S_IRUGO, show_temp, NULL, 4, input);
+static SENSOR_DEVICE_ATTR_2(temp5_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    4, min);
+static SENSOR_DEVICE_ATTR_2(temp5_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    4, max);
+static SENSOR_DEVICE_ATTR_2(temp6_input, S_IRUGO, show_temp, NULL, 5, input);
+static SENSOR_DEVICE_ATTR_2(temp6_min, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    5, min);
+static SENSOR_DEVICE_ATTR_2(temp6_max, S_IRUGO | S_IWUSR, show_temp, set_temp,
+			    5, max);
+
+static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, input);
+static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
+			    0, min);
+static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, input);
+static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
+			    1, min);
+static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, input);
+static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
+			    2, min);
+static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, input);
+static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
+			    3, min);
+static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, input);
+static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan,
+			    4, min);
+