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

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging: (44 commits)
  hwmon: (lineage-pem): Fix in1 voltage alarm sysfs attributes
  hwmon/f71882fg: Add support for f71808e
  hwmon/f71882fg: Add support for f71869f and f71869e
  hwmon/f71882fg: Add support for f71889ed
  hwmon/f71882fg: Break out test for auto pwm's controlled by digital readings
  hwmon/f71882fg: Separate temp beep sysfs attr from the other temp sysfs attr
  hwmon/f71882fg: Remove bogus temp2_type for certain models
  hwmon/f71882fg: Make number of temps configurable
  hwmon/f71882fg: Make creation of in sysfs attributes more generic
  hwmon/f71882fg: Only allow negative auto point temps if fan_neg_temp is enabled
  hwmon/f71882fg: Fix temp1 sensor type reporting
  hwmon: (w83627ehf) Display correct temperature sensor labels for systems with NCT6775F
  hwmon: (w83627ehf) Add fan debounce support for NCT6775F and NCT6776F
  hwmon: (w83627ehf) Update Kconfig for W83677HG-B, NCT6775F and NCT6776F
  hwmon: (w83627ehf) Store rpm instead of raw fan speed data
  hwmon: (w83627ehf) Use 16 bit fan count registers if supported
  hwmon: (w83627ehf) Add support for Nuvoton NCT6775F and NCT6776F
  hwmon: (w83627ehf) Permit enabling SmartFan IV mode if configured at startup
  hwmon: (w83627ehf) Convert register arrays to 16 bit, and convert access to pointers
  hwmon: (w83627ehf) Remove references to datasheets which no longer exist
  ...

Documentation/hwmon/f71882fg

@@ -10,6 +10,10 @@ Supported chips:
     Prefix: 'f71862fg'
     Addresses scanned: none, address read from Super I/O config space
     Datasheet: Available from the Fintek website
+  * Fintek F71869F and F71869E
+    Prefix: 'f71869'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Available from the Fintek website
   * Fintek F71882FG and F71883FG
     Prefix: 'f71882fg'
     Addresses scanned: none, address read from Super I/O config space
@@ -17,6 +21,10 @@ Supported chips:
   * Fintek F71889FG
     Prefix: 'f71889fg'
     Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Available from the Fintek website
+  * Fintek F71889ED
+    Prefix: 'f71889ed'
+    Addresses scanned: none, address read from Super I/O config space
     Datasheet: Should become available on the Fintek website soon
   * Fintek F8000
     Prefix: 'f8000'
@@ -29,9 +37,9 @@ Author: Hans de Goede <hdegoede@redhat.com>
 Description
 -----------
 
-Fintek F718xxFG/F8000 Super I/O chips include complete hardware monitoring
-capabilities. They can monitor up to 9 voltages (3 for the F8000), 4 fans and
-3 temperature sensors.
+Fintek F718xx/F8000 Super I/O chips include complete hardware monitoring
+capabilities. They can monitor up to 9 voltages, 4 fans and 3 temperature
+sensors.
 
 These chips also have fan controlling features, using either DC or PWM, in
 three different modes (one manual, two automatic).
@@ -99,5 +107,5 @@ Writing an unsupported mode will result in an invalid parameter error.
   The fan speed is regulated to keep the temp the fan is mapped to between
   temp#_auto_point2_temp and temp#_auto_point3_temp.
 
-Both of the automatic modes require that pwm1 corresponds to fan1, pwm2 to
+All of the automatic modes require that pwm1 corresponds to fan1, pwm2 to
 fan2 and pwm3 to fan3.

Documentation/hwmon/lineage-pem

@@ -0,0 +1,77 @@
+Kernel driver lineage-pem
+=========================
+
+Supported devices:
+  * Lineage Compact Power Line Power Entry Modules
+    Prefix: 'lineage-pem'
+    Addresses scanned: -
+    Documentation:
+        http://www.lineagepower.com/oem/pdf/CPLI2C.pdf
+
+Author: Guenter Roeck <guenter.roeck@ericsson.com>
+
+
+Description
+-----------
+
+This driver supports various Lineage Compact Power Line DC/DC and AC/DC
+converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others.
+
+Lineage CPL power entry modules are nominally PMBus compliant. However, most
+standard PMBus commands are not supported. Specifically, all hardware monitoring
+and status reporting commands are non-standard. For this reason, a standard
+PMBus driver can not be used.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for Lineage CPL devices, since there is no register
+which can be safely used to identify the chip. You will have to instantiate
+the devices explicitly.
+
+Example: the following will load the driver for a Lineage PEM at address 0x40
+on I2C bus #1:
+$ modprobe lineage-pem
+$ echo lineage-pem 0x40 > /sys/bus/i2c/devices/i2c-1/new_device
+
+All Lineage CPL power entry modules have a built-in I2C bus master selector
+(PCA9541). To ensure device access, this driver should only be used as client
+driver to the pca9541 I2C master selector driver.
+
+
+Sysfs entries
+-------------
+
+All Lineage CPL devices report output voltage and device temperature as well as
+alarms for output voltage, temperature, input voltage, input current, input power,
+and fan status.
+
+Input voltage, input current, input power, and fan speed measurement is only
+supported on newer devices. The driver detects if those attributes are supported,
+and only creates respective sysfs entries if they are.
+
+in1_input		Output voltage (mV)
+in1_min_alarm		Output undervoltage alarm
+in1_max_alarm		Output overvoltage alarm
+in1_crit		Output voltage critical alarm
+
+in2_input		Input voltage (mV, optional)
+in2_alarm		Input voltage alarm
+
+curr1_input		Input current (mA, optional)
+curr1_alarm		Input overcurrent alarm
+
+power1_input		Input power (uW, optional)
+power1_alarm		Input power alarm
+
+fan1_input		Fan 1 speed (rpm, optional)
+fan2_input		Fan 2 speed (rpm, optional)
+fan3_input		Fan 3 speed (rpm, optional)
+
+temp1_input
+temp1_max
+temp1_crit
+temp1_alarm
+temp1_crit_alarm
+temp1_fault

Documentation/hwmon/lm85

@@ -26,6 +26,14 @@ Supported chips:
     Prefix: 'emc6d102'
     Addresses scanned: I2C 0x2c, 0x2d, 0x2e
     Datasheet: http://www.smsc.com/main/catalog/emc6d102.html
+  * SMSC EMC6D103
+    Prefix: 'emc6d103'
+    Addresses scanned: I2C 0x2c, 0x2d, 0x2e
+    Datasheet: http://www.smsc.com/main/catalog/emc6d103.html
+  * SMSC EMC6D103S
+    Prefix: 'emc6d103s'
+    Addresses scanned: I2C 0x2c, 0x2d, 0x2e
+    Datasheet: http://www.smsc.com/main/catalog/emc6d103s.html
 
 Authors:
         Philip Pokorny <ppokorny@penguincomputing.com>,
@@ -122,9 +130,11 @@ to be register compatible. The EMC6D100 offers all the features of the
 EMC6D101 plus additional voltage monitoring and system control features.
 Unfortunately it is not possible to distinguish between the package
 versions on register level so these additional voltage inputs may read
-zero. The EMC6D102 features addtional ADC bits thus extending precision
+zero. EMC6D102 and EMC6D103 feature additional ADC bits thus extending precision
 of voltage and temperature channels.
 
+SMSC EMC6D103S is similar to EMC6D103, but does not support pwm#_auto_pwm_minctl
+and temp#_auto_temp_off.
 
 Hardware Configurations
 -----------------------

Documentation/hwmon/ltc4151

@@ -0,0 +1,47 @@
+Kernel driver ltc4151
+=====================
+
+Supported chips:
+  * Linear Technology LTC4151
+    Prefix: 'ltc4151'
+    Addresses scanned: -
+    Datasheet:
+        http://www.linear.com/docs/Datasheet/4151fc.pdf
+
+Author: Per Dalen <per.dalen@appeartv.com>
+
+
+Description
+-----------
+
+The LTC4151 is a High Voltage I2C Current and Voltage Monitor.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for LTC4151 devices, since there is no register
+which can be safely used to identify the chip. You will have to instantiate
+the devices explicitly.
+
+Example: the following will load the driver for an LTC4151 at address 0x6f
+on I2C bus #0:
+# modprobe ltc4151
+# echo ltc4151 0x6f > /sys/bus/i2c/devices/i2c-0/new_device
+
+
+Sysfs entries
+-------------
+
+Voltage readings provided by this driver are reported as obtained from the ADIN
+and VIN registers.
+
+Current reading provided by this driver is reported as obtained from the Current
+Sense register. The reported value assumes that a 1 mOhm sense resistor is
+installed.
+
+in1_input		VDIN voltage (mV)
+
+in2_input		ADIN voltage (mV)
+
+curr1_input		SENSE current (mA)

Documentation/hwmon/max6639

@@ -0,0 +1,49 @@
+Kernel driver max6639
+=====================
+
+Supported chips:
+  * Maxim MAX6639
+    Prefix: 'max6639'
+    Addresses scanned: I2C 0x2c, 0x2e, 0x2f
+    Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6639.pdf
+
+Authors:
+    He Changqing <hechangqing@semptian.com>
+    Roland Stigge <stigge@antcom.de>
+
+Description
+-----------
+
+This driver implements support for the Maxim MAX6639. This chip is a 2-channel
+temperature monitor with dual PWM fan speed controller. It can monitor its own
+temperature and one external diode-connected transistor or two external
+diode-connected transistors.
+
+The following device attributes are implemented via sysfs:
+
+Attribute              R/W  Contents
+----------------------------------------------------------------------------
+temp1_input            R    Temperature channel 1 input (0..150 C)
+temp2_input            R    Temperature channel 2 input (0..150 C)
+temp1_fault            R    Temperature channel 1 diode fault
+temp2_fault            R    Temperature channel 2 diode fault
+temp1_max              RW   Set THERM temperature for input 1
+                            (in C, see datasheet)
+temp2_max              RW   Set THERM temperature for input 2
+temp1_crit             RW   Set ALERT temperature for input 1
+temp2_crit             RW   Set ALERT temperature for input 2
+temp1_emergency        RW   Set OT temperature for input 1
+                            (in C, see datasheet)
+temp2_emergency        RW   Set OT temperature for input 2
+pwm1                   RW   Fan 1 target duty cycle (0..255)
+pwm2                   RW   Fan 2 target duty cycle (0..255)
+fan1_input             R    TACH1 fan tachometer input (in RPM)
+fan2_input             R    TACH2 fan tachometer input (in RPM)
+fan1_fault             R    Fan 1 fault
+fan2_fault             R    Fan 2 fault
+temp1_max_alarm        R    Alarm on THERM temperature on channel 1
+temp2_max_alarm        R    Alarm on THERM temperature on channel 2
+temp1_crit_alarm       R    Alarm on ALERT temperature on channel 1
+temp2_crit_alarm       R    Alarm on ALERT temperature on channel 2
+temp1_emergency_alarm  R    Alarm on OT temperature on channel 1
+temp2_emergency_alarm  R    Alarm on OT temperature on channel 2

Documentation/hwmon/pmbus

@@ -0,0 +1,215 @@
+Kernel driver pmbus
+====================
+
+Supported chips:
+  * Ericsson BMR45X series
+    DC/DC Converter
+    Prefixes: 'bmr450', 'bmr451', 'bmr453', 'bmr454'
+    Addresses scanned: -
+    Datasheet:
+ http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146395
+  * Linear Technology LTC2978
+    Octal PMBus Power Supply Monitor and Controller
+    Prefix: 'ltc2978'
+    Addresses scanned: -
+    Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf
+  * Maxim MAX16064
+    Quad Power-Supply Controller
+    Prefix: 'max16064'
+    Addresses scanned: -
+    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX16064.pdf
+  * Maxim MAX34440
+    PMBus 6-Channel Power-Supply Manager
+    Prefixes: 'max34440'
+    Addresses scanned: -
+    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34440.pdf
+  * Maxim MAX34441
+    PMBus 5-Channel Power-Supply Manager and Intelligent Fan Controller
+    Prefixes: 'max34441'
+    Addresses scanned: -
+    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
+  * Maxim MAX8688
+    Digital Power-Supply Controller/Monitor
+    Prefix: 'max8688'
+    Addresses scanned: -
+    Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.pdf
+  * Generic PMBus devices
+    Prefix: 'pmbus'
+    Addresses scanned: -
+    Datasheet: n.a.
+
+Author: Guenter Roeck <guenter.roeck@ericsson.com>
+
+
+Description
+-----------
+
+This driver supports hardware montoring for various PMBus compliant devices.
+It supports voltage, current, power, and temperature sensors as supported
+by the device.
+
+Each monitored channel has its own high and low limits, plus a critical
+limit.
+
+Fan support will be added in a later version of this driver.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for PMBus devices, since there is no register
+which can be safely used to identify the chip (The MFG_ID register is not
+supported by all chips), and since there is no well defined address range for
+PMBus devices. You will have to instantiate the devices explicitly.
+
+Example: the following will load the driver for an LTC2978 at address 0x60
+on I2C bus #1:
+$ modprobe pmbus
+$ echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Platform data support
+---------------------
+
+Support for additional PMBus chips can be added by defining chip parameters in
+a new chip specific driver file. For example, (untested) code to add support for
+Emerson DS1200 power modules might look as follows.
+
+static struct pmbus_driver_info ds1200_info = {
+	.pages = 1,
+	/* Note: All other sensors are in linear mode */
+	.direct[PSC_VOLTAGE_OUT] = true,
+	.direct[PSC_TEMPERATURE] = true,
+	.direct[PSC_CURRENT_OUT] = true,
+	.m[PSC_VOLTAGE_IN] = 1,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = 3,
+	.m[PSC_VOLTAGE_OUT] = 1,
+	.b[PSC_VOLTAGE_OUT] = 0,
+	.R[PSC_VOLTAGE_OUT] = 3,
+	.m[PSC_TEMPERATURE] = 1,
+	.b[PSC_TEMPERATURE] = 0,
+	.R[PSC_TEMPERATURE] = 3,
+	.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_STATUS_INPUT
+		   | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		   | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
+		   | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT
+		   | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
+		   | PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
+};
+
+static int ds1200_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	return pmbus_do_probe(client, id, &ds1200_info);
+}
+
+static int ds1200_remove(struct i2c_client *client)
+{
+	return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id ds1200_id[] = {
+	{"ds1200", 0},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, ds1200_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ds1200_driver = {
+	.driver = {
+		   .name = "ds1200",
+		   },
+	.probe = ds1200_probe,
+	.remove = ds1200_remove,
+	.id_table = ds1200_id,
+};
+
+static int __init ds1200_init(void)
+{
+	return i2c_add_driver(&ds1200_driver);
+}
+
+static void __exit ds1200_exit(void)
+{
+	i2c_del_driver(&ds1200_driver);
+}
+
+
+Sysfs entries
+-------------
+
+When probing the chip, the driver identifies which PMBus registers are
+supported, and determines available sensors from this information.
+Attribute files only exist if respective sensors are suported by the chip.
+Labels are provided to inform the user about the sensor associated with
+a given sysfs entry.
+
+The following attributes are supported. Limits are read-write; all other
+attributes are read-only.
+
+inX_input		Measured voltage. From READ_VIN or READ_VOUT register.
+inX_min			Minumum Voltage.
+			From VIN_UV_WARN_LIMIT or VOUT_UV_WARN_LIMIT register.
+inX_max			Maximum voltage.
+			From VIN_OV_WARN_LIMIT or VOUT_OV_WARN_LIMIT register.
+inX_lcrit		Critical minumum Voltage.
+			From VIN_UV_FAULT_LIMIT or VOUT_UV_FAULT_LIMIT register.
+inX_crit		Critical maximum voltage.
+			From VIN_OV_FAULT_LIMIT or VOUT_OV_FAULT_LIMIT register.
+inX_min_alarm		Voltage low alarm. From VOLTAGE_UV_WARNING status.
+inX_max_alarm		Voltage high alarm. From VOLTAGE_OV_WARNING status.
+inX_lcrit_alarm		Voltage critical low alarm.
+			From VOLTAGE_UV_FAULT status.
+inX_crit_alarm		Voltage critical high alarm.
+			From VOLTAGE_OV_FAULT status.
+inX_label		"vin", "vcap", or "voutY"
+
+currX_input		Measured current. From READ_IIN or READ_IOUT register.
+currX_max		Maximum current.
+			From IIN_OC_WARN_LIMIT or IOUT_OC_WARN_LIMIT register.
+currX_lcrit		Critical minumum output current.
+			From IOUT_UC_FAULT_LIMIT register.
+currX_crit		Critical maximum current.
+			From IIN_OC_FAULT_LIMIT or IOUT_OC_FAULT_LIMIT register.
+currX_alarm		Current high alarm.
+			From IIN_OC_WARNING or IOUT_OC_WARNING status.
+currX_lcrit_alarm	Output current critical low alarm.
+			From IOUT_UC_FAULT status.
+currX_crit_alarm	Current critical high alarm.
+			From IIN_OC_FAULT or IOUT_OC_FAULT status.
+currX_label		"iin" or "vinY"
+
+powerX_input		Measured power. From READ_PIN or READ_POUT register.
+powerX_cap		Output power cap. From POUT_MAX register.
+powerX_max		Power limit. From PIN_OP_WARN_LIMIT or
+			POUT_OP_WARN_LIMIT register.
+powerX_crit		Critical output power limit.
+			From POUT_OP_FAULT_LIMIT register.
+powerX_alarm		Power high alarm.
+			From PIN_OP_WARNING or POUT_OP_WARNING status.
+powerX_crit_alarm	Output power critical high alarm.
+			From POUT_OP_FAULT status.
+powerX_label		"pin" or "poutY"
+
+tempX_input		Measured tempererature.
+			From READ_TEMPERATURE_X register.
+tempX_min		Mimimum tempererature. From UT_WARN_LIMIT register.
+tempX_max		Maximum tempererature. From OT_WARN_LIMIT register.
+tempX_lcrit		Critical low tempererature.
+			From UT_FAULT_LIMIT register.
+tempX_crit		Critical high tempererature.
+			From OT_FAULT_LIMIT register.
+tempX_min_alarm		Chip temperature low alarm. Set by comparing
+			READ_TEMPERATURE_X with UT_WARN_LIMIT if
+			TEMP_UT_WARNING status is set.
+tempX_max_alarm		Chip temperature high alarm. Set by comparing
+			READ_TEMPERATURE_X with OT_WARN_LIMIT if
+			TEMP_OT_WARNING status is set.
+tempX_lcrit_alarm	Chip temperature critical low alarm. Set by comparing
+			READ_TEMPERATURE_X with UT_FAULT_LIMIT if
+			TEMP_UT_FAULT status is set.
+tempX_crit_alarm	Chip temperature critical high alarm. Set by comparing
+			READ_TEMPERATURE_X with OT_FAULT_LIMIT if
+			TEMP_OT_FAULT status is set.

Documentation/hwmon/sysfs-interface

@@ -187,6 +187,17 @@ fan[1-*]_div	Fan divisor.
 		Note that this is actually an internal clock divisor, which
 		affects the measurable speed range, not the read value.
 
+fan[1-*]_pulses	Number of tachometer pulses per fan revolution.
+		Integer value, typically between 1 and 4.
+		RW
+		This value is a characteristic of the fan connected to the
+		device's input, so it has to be set in accordance with the fan
+		model.
+		Should only be created if the chip has a register to configure
+		the number of pulses. In the absence of such a register (and
+		thus attribute) the value assumed by all devices is 2 pulses
+		per fan revolution.
+
 fan[1-*]_target
 		Desired fan speed
 		Unit: revolution/min (RPM)

Documentation/hwmon/w83627ehf

@@ -5,13 +5,11 @@ Supported chips:
   * Winbond W83627EHF/EHG (ISA access ONLY)
     Prefix: 'w83627ehf'
     Addresses scanned: ISA address retrieved from Super I/O registers
-    Datasheet:
-        http://www.nuvoton.com.tw/NR/rdonlyres/A6A258F0-F0C9-4F97-81C0-C4D29E7E943E/0/W83627EHF.pdf
+    Datasheet: not available
   * Winbond W83627DHG
     Prefix: 'w83627dhg'
     Addresses scanned: ISA address retrieved from Super I/O registers
-    Datasheet:
-        http://www.nuvoton.com.tw/NR/rdonlyres/7885623D-A487-4CF9-A47F-30C5F73D6FE6/0/W83627DHG.pdf
+    Datasheet: not available
   * Winbond W83627DHG-P
     Prefix: 'w83627dhg'
     Addresses scanned: ISA address retrieved from Super I/O registers
@@ -24,6 +22,14 @@ Supported chips:
     Prefix: 'w83667hg'
     Addresses scanned: ISA address retrieved from Super I/O registers
     Datasheet: Available from Nuvoton upon request
+  * Nuvoton NCT6775F/W83667HG-I
+    Prefix: 'nct6775'
+    Addresses scanned: ISA address retrieved from Super I/O registers
+    Datasheet: Available from Nuvoton upon request
+  * Nuvoton NCT6776F
+    Prefix: 'nct6776'
+    Addresses scanned: ISA address retrieved from Super I/O registers
+    Datasheet: Available from Nuvoton upon request
 
 Authors:
         Jean Delvare <khali@linux-fr.org>
@@ -36,19 +42,28 @@ Description
 -----------
 
 This driver implements support for the Winbond W83627EHF, W83627EHG,
-W83627DHG, W83627DHG-P, W83667HG and W83667HG-B super I/O chips.
-We will refer to them collectively as Winbond chips.
-
-The chips implement three temperature sensors, five fan rotation
-speed sensors, ten analog voltage sensors (only nine for the 627DHG), one
-VID (6 pins for the 627EHF/EHG, 8 pins for the 627DHG and 667HG), alarms
-with beep warnings (control unimplemented), and some automatic fan
-regulation strategies (plus manual fan control mode).
+W83627DHG, W83627DHG-P, W83667HG, W83667HG-B, W83667HG-I (NCT6775F),
+and NCT6776F super I/O chips. We will refer to them collectively as
+Winbond chips.
+
+The chips implement three temperature sensors (up to four for 667HG-B, and nine
+for NCT6775F and NCT6776F), five fan rotation speed sensors, ten analog voltage
+sensors (only nine for the 627DHG), one VID (6 pins for the 627EHF/EHG, 8 pins
+for the 627DHG and 667HG), alarms with beep warnings (control unimplemented),
+and some automatic fan regulation strategies (plus manual fan control mode).
+
+The temperature sensor sources on W82677HG-B, NCT6775F, and NCT6776F are
+configurable. temp4 and higher attributes are only reported if its temperature
+source differs from the temperature sources of the already reported temperature
+sensors. The configured source for each of the temperature sensors is provided
+in tempX_label.
 
 Temperatures are measured in degrees Celsius and measurement resolution is 1
-degC for temp1 and 0.5 degC for temp2 and temp3. An alarm is triggered when
-the temperature gets higher than high limit; it stays on until the temperature
-falls below the hysteresis value.
+degC for temp1 and and 0.5 degC for temp2 and temp3. For temp4 and higher,
+resolution is 1 degC for W83667HG-B and 0.0 degC for NCT6775F and NCT6776F.
+An alarm is triggered when the temperature gets higher than high limit;
+it stays on until the temperature falls below the hysteresis value.
+Alarms are only supported for temp1, temp2, and temp3.
 
 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
 triggered if the rotation speed has dropped below a programmable limit. Fan
@@ -80,7 +95,8 @@ prog  -> pwm4 (not on 667HG and 667HG-B; the programmable setting is not
 
 name - this is a standard hwmon device entry. For the W83627EHF and W83627EHG,
        it is set to "w83627ehf", for the W83627DHG it is set to "w83627dhg",
-       and for the W83667HG it is set to "w83667hg".
+       for the W83667HG and W83667HG-B it is set to "w83667hg", for NCT6775F it
+       is set to "nct6775", and for NCT6776F it is set to "nct6776".
 
 pwm[1-4] - this file stores PWM duty cycle or DC value (fan speed) in range:
 	   0 (stop) to 255 (full)
@@ -90,6 +106,18 @@ pwm[1-4]_enable - this file controls mode of fan/temperature control:
 	* 2 "Thermal Cruise" mode
 	* 3 "Fan Speed Cruise" mode
 	* 4 "Smart Fan III" mode
+	* 5 "Smart Fan IV" mode
+
+	SmartFan III mode is not supported on NCT6776F.
+
+	SmartFan IV mode is configurable only if it was configured at system
+	startup, and is only supported for W83677HG-B, NCT6775F, and NCT6776F.
+	SmartFan IV operational parameters can not be configured at this time,
+	and the various pwm attributes are not used in SmartFan IV mode.
+	The attributes can be written to, which is useful if you plan to
+	configure the system for a different pwm mode. However, the information
+	returned when reading pwm attributes is unrelated to SmartFan IV
+	operation.
 
 pwm[1-4]_mode - controls if output is PWM or DC level
         * 0 DC output (0 - 12v)

drivers/hwmon/Kconfig

@@ -467,6 +467,17 @@ config SENSORS_JC42
 	  This driver can also be built as a module.  If so, the module
 	  will be called jc42.
 
+config SENSORS_LINEAGE
+	tristate "Lineage Compact Power Line Power Entry Module"
+	depends on I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the Lineage Compact Power Line
+	  series of DC/DC and AC/DC converters such as CP1800, CP2000AC,
+	  CP2000DC, CP2725, and others.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called lineage-pem.
+
 config SENSORS_LM63
 	tristate "National Semiconductor LM63 and LM64"
 	depends on I2C
@@ -625,6 +636,17 @@ config SENSORS_LM93
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm93.
 
+config SENSORS_LTC4151
+	tristate "Linear Technology LTC4151"
+	depends on I2C
+	default n
+	help
+	  If you say yes here you get support for Linear Technology LTC4151
+	  High Voltage I2C Current and Voltage Monitor interface.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called ltc4151.
+
 config SENSORS_LTC4215
 	tristate "Linear Technology LTC4215"
 	depends on I2C && EXPERIMENTAL
@@ -685,6 +707,16 @@ config SENSORS_MAX1619
 	  This driver can also be built as a module.  If so, the module
 	  will be called max1619.
 
+config SENSORS_MAX6639
+	tristate "Maxim MAX6639 sensor chip"
+	depends on I2C && EXPERIMENTAL
+	help
+	  If you say yes here you get support for the MAX6639
+	  sensor chips.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called max6639.
+
 config SENSORS_MAX6650
 	tristate "Maxim MAX6650 sensor chip"
 	depends on I2C && EXPERIMENTAL
@@ -735,6 +767,61 @@ config SENSORS_PCF8591
 	  These devices are hard to detect and rarely found on mainstream
 	  hardware.  If unsure, say N.
 
+config PMBUS
+	tristate "PMBus support"
+	depends on I2C && EXPERIMENTAL
+	default n
+	help
+	  Say yes here if you want to enable PMBus support.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called pmbus_core.
+
+if PMBUS
+
+config SENSORS_PMBUS
+	tristate "Generic PMBus devices"
+	default n
+	help
+	  If you say yes here you get hardware monitoring support for generic
+	  PMBus devices, including but not limited to BMR450, BMR451, BMR453,
+	  BMR454, and LTC2978.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called pmbus.
+
+config SENSORS_MAX16064
+	tristate "Maxim MAX16064"
+	default n
+	help
+	  If you say yes here you get hardware monitoring support for Maxim
+	  MAX16064.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called max16064.
+
+config SENSORS_MAX34440
+	tristate "Maxim MAX34440/MAX34441"
+	default n
+	help
+	  If you say yes here you get hardware monitoring support for Maxim
+	  MAX34440 and MAX34441.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called max34440.
+
+config SENSORS_MAX8688
+	tristate "Maxim MAX8688"
+	default n
+	help
+	  If you say yes here you get hardware monitoring support for Maxim
+	  MAX8688.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called max8688.
+
+endif # PMBUS
+
 config SENSORS_SHT15
 	tristate "Sensiron humidity and temperature sensors. SHT15 and compat."
 	depends on GENERIC_GPIO
@@ -1083,7 +1170,7 @@ config SENSORS_W83627HF
 	  will be called w83627hf.
 
 config SENSORS_W83627EHF
-	tristate "Winbond W83627EHF/EHG/DHG, W83667HG"
+	tristate "Winbond W83627EHF/EHG/DHG, W83667HG, NCT6775F, NCT6776F"
 	select HWMON_VID
 	help
 	  If you say yes here you get support for the hardware
@@ -1094,7 +1181,8 @@ config SENSORS_W83627EHF
 	  chip suited for specific Intel processors that use PECI such as
 	  the Core 2 Duo.
 
-	  This driver also supports the W83667HG chip.
+	  This driver also supports Nuvoton W83667HG, W83667HG-B, NCT6775F
+	  (also known as W83667HG-I), and NCT6776F.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called w83627ehf.

drivers/hwmon/Makefile

@@ -62,6 +62,7 @@ obj-$(CONFIG_SENSORS_JC42)	+= jc42.o
 obj-$(CONFIG_SENSORS_JZ4740)	+= jz4740-hwmon.o
 obj-$(CONFIG_SENSORS_K8TEMP)	+= k8temp.o
 obj-$(CONFIG_SENSORS_K10TEMP)	+= k10temp.o
+obj-$(CONFIG_SENSORS_LINEAGE)	+= lineage-pem.o
 obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o hp_accel.o
 obj-$(CONFIG_SENSORS_LIS3_SPI)	+= lis3lv02d.o lis3lv02d_spi.o
 obj-$(CONFIG_SENSORS_LIS3_I2C)	+= lis3lv02d.o lis3lv02d_i2c.o
@@ -79,11 +80,13 @@ obj-$(CONFIG_SENSORS_LM90)	+= lm90.o
 obj-$(CONFIG_SENSORS_LM92)	+= lm92.o
 obj-$(CONFIG_SENSORS_LM93)	+= lm93.o
 obj-$(CONFIG_SENSORS_LM95241)	+= lm95241.o
+obj-$(CONFIG_SENSORS_LTC4151)	+= ltc4151.o
 obj-$(CONFIG_SENSORS_LTC4215)	+= ltc4215.o
 obj-$(CONFIG_SENSORS_LTC4245)	+= ltc4245.o
 obj-$(CONFIG_SENSORS_LTC4261)	+= ltc4261.o
 obj-$(CONFIG_SENSORS_MAX1111)	+= max1111.o
 obj-$(CONFIG_SENSORS_MAX1619)	+= max1619.o
+obj-$(CONFIG_SENSORS_MAX6639)	+= max6639.o
 obj-$(CONFIG_SENSORS_MAX6650)	+= max6650.o
 obj-$(CONFIG_SENSORS_MC13783_ADC)+= mc13783-adc.o
 obj-$(CONFIG_SENSORS_PC87360)	+= pc87360.o
@@ -112,6 +115,13 @@ obj-$(CONFIG_SENSORS_W83L786NG)	+= w83l786ng.o
 obj-$(CONFIG_SENSORS_WM831X)	+= wm831x-hwmon.o
 obj-$(CONFIG_SENSORS_WM8350)	+= wm8350-hwmon.o
 
+# PMBus drivers
+obj-$(CONFIG_PMBUS)		+= pmbus_core.o
+obj-$(CONFIG_SENSORS_PMBUS)	+= pmbus.o
+obj-$(CONFIG_SENSORS_MAX16064)	+= max16064.o
+obj-$(CONFIG_SENSORS_MAX34440)	+= max34440.o
+obj-$(CONFIG_SENSORS_MAX8688)	+= max8688.o
+
 ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y)
 EXTRA_CFLAGS += -DDEBUG
 endif

drivers/hwmon/f71882fg.c

@@ -1,6 +1,6 @@
 /***************************************************************************
  *   Copyright (C) 2006 by Hans Edgington <hans@edgington.nl>              *
- *   Copyright (C) 2007-2009 Hans de Goede <hdegoede@redhat.com>           *
+ *   Copyright (C) 2007-2011 Hans de Goede <hdegoede@redhat.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  *
@@ -47,22 +47,23 @@
 #define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */
 
 #define SIO_FINTEK_ID		0x1934	/* Manufacturers ID */
+#define SIO_F71808E_ID		0x0901	/* Chipset ID */
 #define SIO_F71858_ID		0x0507  /* Chipset ID */
 #define SIO_F71862_ID		0x0601	/* Chipset ID */
+#define SIO_F71869_ID		0x0814	/* Chipset ID */
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
 #define SIO_F71889_ID		0x0723	/* Chipset ID */
+#define SIO_F71889E_ID		0x0909	/* Chipset ID */
 #define SIO_F8000_ID		0x0581	/* Chipset ID */
 
 #define REGION_LENGTH		8
 #define ADDR_REG_OFFSET		5
 #define DATA_REG_OFFSET		6
 
-#define F71882FG_REG_PECI		0x0A
-
-#define F71882FG_REG_IN_STATUS		0x12 /* f71882fg only */
-#define F71882FG_REG_IN_BEEP		0x13 /* f71882fg only */
+#define F71882FG_REG_IN_STATUS		0x12 /* f7188x only */
+#define F71882FG_REG_IN_BEEP		0x13 /* f7188x only */
 #define F71882FG_REG_IN(nr)		(0x20  + (nr))
-#define F71882FG_REG_IN1_HIGH		0x32 /* f71882fg only */
+#define F71882FG_REG_IN1_HIGH		0x32 /* f7188x only */
 
 #define F71882FG_REG_FAN(nr)		(0xA0 + (16 * (nr)))
 #define F71882FG_REG_FAN_TARGET(nr)	(0xA2 + (16 * (nr)))
@@ -86,28 +87,71 @@
 
 #define F71882FG_REG_FAN_HYST(nr)	(0x98 + (nr))
 
+#define F71882FG_REG_FAN_FAULT_T	0x9F
+#define F71882FG_FAN_NEG_TEMP_EN	0x20
+#define F71882FG_FAN_PROG_SEL		0x80
+
 #define F71882FG_REG_POINT_PWM(pwm, point)	(0xAA + (point) + (16 * (pwm)))
 #define F71882FG_REG_POINT_TEMP(pwm, point)	(0xA6 + (point) + (16 * (pwm)))
 #define F71882FG_REG_POINT_MAPPING(nr)		(0xAF + 16 * (nr))
 
 #define	F71882FG_REG_START		0x01
 
+#define F71882FG_MAX_INS		9
+
 #define FAN_MIN_DETECT			366 /* Lowest detectable fanspeed */
 
 static unsigned short force_id;
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
-enum chips { f71858fg, f71862fg, f71882fg, f71889fg, f8000 };
+enum chips { f71808e, f71858fg, f71862fg, f71869, f71882fg, f71889fg,
+	     f71889ed, f8000 };
 
 static const char *f71882fg_names[] = {
+	"f71808e",
 	"f71858fg",
 	"f71862fg",
+	"f71869", /* Both f71869f and f71869e, reg. compatible and same id */
 	"f71882fg",
 	"f71889fg",
+	"f71889ed",
 	"f8000",
 };
 
+static const char f71882fg_has_in[8][F71882FG_MAX_INS] = {
+	{ 1, 1, 1, 1, 1, 1, 0, 1, 1 }, /* f71808e */
+	{ 1, 1, 1, 0, 0, 0, 0, 0, 0 }, /* f71858fg */
+	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71862fg */
+	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71869 */
+	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71882fg */
+	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71889fg */
+	{ 1, 1, 1, 1, 1, 1, 1, 1, 1 }, /* f71889ed */
+	{ 1, 1, 1, 0, 0, 0, 0, 0, 0 }, /* f8000 */
+};
+
+static const char f71882fg_has_in1_alarm[8] = {
+	0, /* f71808e */
+	0, /* f71858fg */
+	0, /* f71862fg */
+	0, /* f71869 */
+	1, /* f71882fg */
+	1, /* f71889fg */
+	1, /* f71889ed */
+	0, /* f8000 */
+};
+
+static const char f71882fg_has_beep[8] = {
+	0, /* f71808e */
+	0, /* f71858fg */
+	1, /* f71862fg */
+	1, /* f71869 */
+	1, /* f71882fg */
+	1, /* f71889fg */
+	1, /* f71889ed */
+	0, /* f8000 */
+};
+
 static struct platform_device *f71882fg_pdev;
 
 /* Super-I/O Function prototypes */
@@ -129,11 +173,12 @@ struct f71882fg_data {
 	struct mutex update_lock;
 	int temp_start;			/* temp numbering start (0 or 1) */
 	char valid;			/* !=0 if following fields are valid */
+	char auto_point_temp_signed;
 	unsigned long last_updated;	/* In jiffies */
 	unsigned long last_limits;	/* In jiffies */
 
 	/* Register Values */
-	u8	in[9];
+	u8	in[F71882FG_MAX_INS];
 	u8	in1_max;
 	u8	in_status;
 	u8	in_beep;
@@ -142,7 +187,7 @@ struct f71882fg_data {
 	u16	fan_full_speed[4];
 	u8	fan_status;
 	u8	fan_beep;
-	/* Note: all models have only 3 temperature channels, but on some
+	/* Note: all models have max 3 temperature channels, but on some
 	   they are addressed as 0-2 and on others as 1-3, so for coding
 	   convenience we reserve space for 4 channels */
 	u16	temp[4];
@@ -262,13 +307,9 @@ static struct platform_driver f71882fg_driver = {
 
 static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
 
-/* Temp and in attr for the f71858fg, the f71858fg is special as it
-   has its temperature indexes start at 0 (the others start at 1) and
-   it only has 3 voltage inputs */
-static struct sensor_device_attribute_2 f71858fg_in_temp_attr[] = {
-	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
-	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
-	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
+/* Temp attr for the f71858fg, the f71858fg is special as it has its
+   temperature indexes start at 0 (the others start at 1) */
+static struct sensor_device_attribute_2 f71858fg_temp_attr[] = {
 	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
 	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 0),
@@ -292,7 +333,6 @@ static struct sensor_device_attribute_2 f71858fg_in_temp_attr[] = {
 	SENSOR_ATTR_2(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
 		0, 1),
 	SENSOR_ATTR_2(temp2_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
-	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 1),
 	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
 	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2),
 	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
@@ -308,17 +348,8 @@ static struct sensor_device_attribute_2 f71858fg_in_temp_attr[] = {
 	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
 };
 
-/* Temp and in attr common to the f71862fg, f71882fg and f71889fg */
-static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
-	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
-	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
-	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
-	SENSOR_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 0, 3),
-	SENSOR_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 0, 4),
-	SENSOR_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 0, 5),
-	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
-	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
-	SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
+/* Temp attr for the standard models */
+static struct sensor_device_attribute_2 fxxxx_temp_attr[3][9] = { {
 	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 1),
 	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 1),
@@ -328,17 +359,14 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
 	   the max and crit alarms separately and lm_sensors v2 depends on the
 	   presence of temp#_alarm files. The same goes for temp2/3 _alarm. */
 	SENSOR_ATTR_2(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 1),
-	SENSOR_ATTR_2(temp1_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 1),
 	SENSOR_ATTR_2(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
 		store_temp_crit, 0, 1),
 	SENSOR_ATTR_2(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
 		0, 1),
 	SENSOR_ATTR_2(temp1_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
-	SENSOR_ATTR_2(temp1_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 5),
 	SENSOR_ATTR_2(temp1_type, S_IRUGO, show_temp_type, NULL, 0, 1),
 	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
+}, {
 	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 2),
 	SENSOR_ATTR_2(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 2),
@@ -346,17 +374,14 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
 		store_temp_max_hyst, 0, 2),
 	/* Should be temp2_max_alarm, see temp1_alarm note */
 	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 2),
-	SENSOR_ATTR_2(temp2_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 2),
 	SENSOR_ATTR_2(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
 		store_temp_crit, 0, 2),
 	SENSOR_ATTR_2(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
 		0, 2),
 	SENSOR_ATTR_2(temp2_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 6),
-	SENSOR_ATTR_2(temp2_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 6),
 	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 2),
 	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
+}, {
 	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 3),
 	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 3),
@@ -364,37 +389,39 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
 		store_temp_max_hyst, 0, 3),
 	/* Should be temp3_max_alarm, see temp1_alarm note */
 	SENSOR_ATTR_2(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 3),
-	SENSOR_ATTR_2(temp3_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 3),
 	SENSOR_ATTR_2(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
 		store_temp_crit, 0, 3),
 	SENSOR_ATTR_2(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
 		0, 3),
 	SENSOR_ATTR_2(temp3_crit_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 7),
-	SENSOR_ATTR_2(temp3_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 7),
 	SENSOR_ATTR_2(temp3_type, S_IRUGO, show_temp_type, NULL, 0, 3),
 	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 3),
-};
+} };
 
-/* For models with in1 alarm capability */
-static struct sensor_device_attribute_2 fxxxx_in1_alarm_attr[] = {
-	SENSOR_ATTR_2(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max,
-		0, 1),
-	SENSOR_ATTR_2(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep,
-		0, 1),
-	SENSOR_ATTR_2(in1_alarm, S_IRUGO, show_in_alarm, NULL, 0, 1),
-};
+/* Temp attr for models which can beep on temp alarm */
+static struct sensor_device_attribute_2 fxxxx_temp_beep_attr[3][2] = { {
+	SENSOR_ATTR_2(temp1_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 1),
+	SENSOR_ATTR_2(temp1_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 5),
+}, {
+	SENSOR_ATTR_2(temp2_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 2),
+	SENSOR_ATTR_2(temp2_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 6),
+}, {
+	SENSOR_ATTR_2(temp3_max_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 3),
+	SENSOR_ATTR_2(temp3_crit_beep, S_IRUGO|S_IWUSR, show_temp_beep,
+		store_temp_beep, 0, 7),
+} };
 
-/* Temp and in attr for the f8000
+/* Temp attr for the f8000
    Note on the f8000 temp_ovt (crit) is used as max, and temp_high (max)
    is used as hysteresis value to clear alarms
    Also like the f71858fg its temperature indexes start at 0
  */
-static struct sensor_device_attribute_2 f8000_in_temp_attr[] = {
-	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
-	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
-	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
+static struct sensor_device_attribute_2 f8000_temp_attr[] = {
 	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
 	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_crit,
 		store_temp_crit, 0, 0),
@@ -408,7 +435,6 @@ static struct sensor_device_attribute_2 f8000_in_temp_attr[] = {
 	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 1),
 	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 5),
-	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 1),
 	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
 	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2),
 	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_crit,
@@ -419,6 +445,28 @@ static struct sensor_device_attribute_2 f8000_in_temp_attr[] = {
 	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
 };
 
+/* in attr for all models */
+static struct sensor_device_attribute_2 fxxxx_in_attr[] = {
+	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
+	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
+	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
+	SENSOR_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 0, 3),
+	SENSOR_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 0, 4),
+	SENSOR_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 0, 5),
+	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
+	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
+	SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
+};
+
+/* For models with in1 alarm capability */
+static struct sensor_device_attribute_2 fxxxx_in1_alarm_attr[] = {
+	SENSOR_ATTR_2(in1_max, S_IRUGO|S_IWUSR, show_in_max, store_in_max,
+		0, 1),
+	SENSOR_ATTR_2(in1_beep, S_IRUGO|S_IWUSR, show_in_beep, store_in_beep,
+		0, 1),
+	SENSOR_ATTR_2(in1_alarm, S_IRUGO, show_in_alarm, NULL, 0, 1),
+};
+
 /* Fan / PWM attr common to all models */
 static struct sensor_device_attribute_2 fxxxx_fan_attr[4][6] = { {
 	SENSOR_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0),
@@ -479,7 +527,7 @@ static struct sensor_device_attribute_2 fxxxx_fan_beep_attr[] = {
 };
 
 /* PWM attr for the f71862fg, fewer pwms and fewer zones per pwm than the
-   f71858fg / f71882fg / f71889fg */
+   standard models */
 static struct sensor_device_attribute_2 f71862fg_auto_pwm_attr[] = {
 	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
 		      show_pwm_auto_point_channel,
@@ -548,7 +596,87 @@ static struct sensor_device_attribute_2 f71862fg_auto_pwm_attr[] = {
 		      show_pwm_auto_point_temp_hyst, NULL, 3, 2),
 };
 
-/* PWM attr common to the f71858fg, f71882fg and f71889fg */
+/* PWM attr for the f71808e/f71869, almost identical to the f71862fg, but the
+   pwm setting when the temperature is above the pwmX_auto_point1_temp can be
+   programmed instead of being hardcoded to 0xff */
+static struct sensor_device_attribute_2 f71869_auto_pwm_attr[] = {
+	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_channel,
+		      store_pwm_auto_point_channel, 0, 0),
+	SENSOR_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      0, 0),
+	SENSOR_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      1, 0),
+	SENSOR_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      4, 0),
+	SENSOR_ATTR_2(pwm1_auto_point1_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      0, 0),
+	SENSOR_ATTR_2(pwm1_auto_point2_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      3, 0),
+	SENSOR_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp_hyst,
+		      store_pwm_auto_point_temp_hyst,
+		      0, 0),
+	SENSOR_ATTR_2(pwm1_auto_point2_temp_hyst, S_IRUGO,
+		      show_pwm_auto_point_temp_hyst, NULL, 3, 0),
+
+	SENSOR_ATTR_2(pwm2_auto_channels_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_channel,
+		      store_pwm_auto_point_channel, 0, 1),
+	SENSOR_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      0, 1),
+	SENSOR_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      1, 1),
+	SENSOR_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      4, 1),
+	SENSOR_ATTR_2(pwm2_auto_point1_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      0, 1),
+	SENSOR_ATTR_2(pwm2_auto_point2_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      3, 1),
+	SENSOR_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp_hyst,
+		      store_pwm_auto_point_temp_hyst,
+		      0, 1),
+	SENSOR_ATTR_2(pwm2_auto_point2_temp_hyst, S_IRUGO,
+		      show_pwm_auto_point_temp_hyst, NULL, 3, 1),
+
+	SENSOR_ATTR_2(pwm3_auto_channels_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_channel,
+		      store_pwm_auto_point_channel, 0, 2),
+	SENSOR_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      0, 2),
+	SENSOR_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      1, 2),
+	SENSOR_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_pwm, store_pwm_auto_point_pwm,
+		      4, 2),
+	SENSOR_ATTR_2(pwm3_auto_point1_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      0, 2),
+	SENSOR_ATTR_2(pwm3_auto_point2_temp, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp, store_pwm_auto_point_temp,
+		      3, 2),
+	SENSOR_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO|S_IWUSR,
+		      show_pwm_auto_point_temp_hyst,
+		      store_pwm_auto_point_temp_hyst,
+		      0, 2),
+	SENSOR_ATTR_2(pwm3_auto_point2_temp_hyst, S_IRUGO,
+		      show_pwm_auto_point_temp_hyst, NULL, 3, 2),
+};
+
+/* PWM attr for the standard models */
 static struct sensor_device_attribute_2 fxxxx_auto_pwm_attr[4][14] = { {
 	SENSOR_ATTR_2(pwm1_auto_channels_temp, S_IRUGO|S_IWUSR,
 		      show_pwm_auto_point_channel,
@@ -943,16 +1071,16 @@ static u16 f71882fg_read_temp(struct f71882fg_data *data, int nr)
 static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 {
 	struct f71882fg_data *data = dev_get_drvdata(dev);
-	int nr, reg = 0, reg2;
+	int nr, reg, point;
 	int nr_fans = (data->type == f71882fg) ? 4 : 3;
-	int nr_ins = (data->type == f71858fg || data->type == f8000) ? 3 : 9;
+	int nr_temps = (data->type == f71808e) ? 2 : 3;
 
 	mutex_lock(&data->update_lock);
 
 	/* Update once every 60 seconds */
 	if (time_after(jiffies, data->last_limits + 60 * HZ) ||
 			!data->valid) {
-		if (data->type == f71882fg || data->type == f71889fg) {
+		if (f71882fg_has_in1_alarm[data->type]) {
 			data->in1_max =
 				f71882fg_read8(data, F71882FG_REG_IN1_HIGH);
 			data->in_beep =
@@ -960,7 +1088,8 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 		}
 
 		/* Get High & boundary temps*/
-		for (nr = data->temp_start; nr < 3 + data->temp_start; nr++) {
+		for (nr = data->temp_start; nr < nr_temps + data->temp_start;
+									nr++) {
 			data->temp_ovt[nr] = f71882fg_read8(data,
 						F71882FG_REG_TEMP_OVT(nr));
 			data->temp_high[nr] = f71882fg_read8(data,
@@ -973,44 +1102,19 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 			data->temp_hyst[1] = f71882fg_read8(data,
 						F71882FG_REG_TEMP_HYST(1));
 		}
+		/* All but the f71858fg / f8000 have this register */
+		if ((data->type != f71858fg) && (data->type != f8000)) {
+			reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
+			data->temp_type[1] = (reg & 0x02) ? 2 : 4;
+			data->temp_type[2] = (reg & 0x04) ? 2 : 4;
+			data->temp_type[3] = (reg & 0x08) ? 2 : 4;
+		}
 
-		if (data->type == f71862fg || data->type == f71882fg ||
-		    data->type == f71889fg) {
+		if (f71882fg_has_beep[data->type]) {
 			data->fan_beep = f71882fg_read8(data,
 						F71882FG_REG_FAN_BEEP);
 			data->temp_beep = f71882fg_read8(data,
 						F71882FG_REG_TEMP_BEEP);
-			/* Have to hardcode type, because temp1 is special */
-			reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
-			data->temp_type[2] = (reg & 0x04) ? 2 : 4;
-			data->temp_type[3] = (reg & 0x08) ? 2 : 4;
-		}
-		/* Determine temp index 1 sensor type */
-		if (data->type == f71889fg) {
-			reg2 = f71882fg_read8(data, F71882FG_REG_START);
-			switch ((reg2 & 0x60) >> 5) {
-			case 0x00: /* BJT / Thermistor */
-				data->temp_type[1] = (reg & 0x02) ? 2 : 4;
-				break;
-			case 0x01: /* AMDSI */
-				data->temp_type[1] = 5;
-				break;
-			case 0x02: /* PECI */
-			case 0x03: /* Ibex Peak ?? Report as PECI for now */
-				data->temp_type[1] = 6;
-				break;
-			}
-		} else {
-			reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
-			if ((reg2 & 0x03) == 0x01)
-				data->temp_type[1] = 6; /* PECI */
-			else if ((reg2 & 0x03) == 0x02)
-				data->temp_type[1] = 5; /* AMDSI */
-			else if (data->type == f71862fg ||
-				 data->type == f71882fg)
-				data->temp_type[1] = (reg & 0x02) ? 2 : 4;
-			else /* f71858fg and f8000 only support BJT */
-				data->temp_type[1] = 2;
 		}
 
 		data->pwm_enable = f71882fg_read8(data,
@@ -1025,8 +1129,8 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 			    f71882fg_read8(data,
 					   F71882FG_REG_POINT_MAPPING(nr));
 
-			if (data->type != f71862fg) {
-				int point;
+			switch (data->type) {
+			default:
 				for (point = 0; point < 5; point++) {
 					data->pwm_auto_point_pwm[nr][point] =
 						f71882fg_read8(data,
@@ -1039,7 +1143,14 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 							F71882FG_REG_POINT_TEMP
 							(nr, point));
 				}
-			} else {
+				break;
+			case f71808e:
+			case f71869:
+				data->pwm_auto_point_pwm[nr][0] =
+					f71882fg_read8(data,
+						F71882FG_REG_POINT_PWM(nr, 0));
+				/* Fall through */
+			case f71862fg:
 				data->pwm_auto_point_pwm[nr][1] =
 					f71882fg_read8(data,
 						F71882FG_REG_POINT_PWM
@@ -1056,6 +1167,7 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 					f71882fg_read8(data,
 						F71882FG_REG_POINT_TEMP
 						(nr, 3));
+				break;
 			}
 		}
 		data->last_limits = jiffies;
@@ -1067,7 +1179,8 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 						F71882FG_REG_TEMP_STATUS);
 		data->temp_diode_open = f71882fg_read8(data,
 						F71882FG_REG_TEMP_DIODE_OPEN);
-		for (nr = data->temp_start; nr < 3 + data->temp_start; nr++)
+		for (nr = data->temp_start; nr < nr_temps + data->temp_start;
+									nr++)
 			data->temp[nr] = f71882fg_read_temp(data, nr);
 
 		data->fan_status = f71882fg_read8(data,
@@ -1083,17 +1196,18 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 			data->pwm[nr] =
 			    f71882fg_read8(data, F71882FG_REG_PWM(nr));
 		}
-
 		/* The f8000 can monitor 1 more fan, but has no pwm for it */
 		if (data->type == f8000)
 			data->fan[3] = f71882fg_read16(data,
 						F71882FG_REG_FAN(3));
-		if (data->type == f71882fg || data->type == f71889fg)
+
+		if (f71882fg_has_in1_alarm[data->type])
 			data->in_status = f71882fg_read8(data,
 						F71882FG_REG_IN_STATUS);
-		for (nr = 0; nr < nr_ins; nr++)
-			data->in[nr] = f71882fg_read8(data,
-						F71882FG_REG_IN(nr));
+		for (nr = 0; nr < F71882FG_MAX_INS; nr++)
+			if (f71882fg_has_in[data->type][nr])
+				data->in[nr] = f71882fg_read8(data,
+							F71882FG_REG_IN(nr));
 
 		data->last_updated = jiffies;
 		data->valid = 1;
@@ -1882,7 +1996,7 @@ static ssize_t store_pwm_auto_point_temp(struct device *dev,
 
 	val /= 1000;
 
-	if (data->type == f71889fg)
+	if (data->auto_point_temp_signed)
 		val = SENSORS_LIMIT(val, -128, 127);
 	else
 		val = SENSORS_LIMIT(val, 0, 127);
@@ -1929,7 +2043,8 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 	struct f71882fg_data *data;
 	struct f71882fg_sio_data *sio_data = pdev->dev.platform_data;
 	int err, i, nr_fans = (sio_data->type == f71882fg) ? 4 : 3;
-	u8 start_reg;
+	int nr_temps = (sio_data->type == f71808e) ? 2 : 3;
+	u8 start_reg, reg;
 
 	data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL);
 	if (!data)
@@ -1968,37 +2083,72 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 				/* The f71858fg temperature alarms behave as
 				   the f8000 alarms in this mode */
 				err = f71882fg_create_sysfs_files(pdev,
-					f8000_in_temp_attr,
-					ARRAY_SIZE(f8000_in_temp_attr));
+					f8000_temp_attr,
+					ARRAY_SIZE(f8000_temp_attr));
 			else
 				err = f71882fg_create_sysfs_files(pdev,
-					f71858fg_in_temp_attr,
-					ARRAY_SIZE(f71858fg_in_temp_attr));
-			break;
-		case f71882fg:
-		case f71889fg:
-			err = f71882fg_create_sysfs_files(pdev,
-					fxxxx_in1_alarm_attr,
-					ARRAY_SIZE(fxxxx_in1_alarm_attr));
-			if (err)
-				goto exit_unregister_sysfs;
-			/* fall through! */
-		case f71862fg:
-			err = f71882fg_create_sysfs_files(pdev,
-					fxxxx_in_temp_attr,
-					ARRAY_SIZE(fxxxx_in_temp_attr));
+					f71858fg_temp_attr,
+					ARRAY_SIZE(f71858fg_temp_attr));
 			break;
 		case f8000:
 			err = f71882fg_create_sysfs_files(pdev,
-					f8000_in_temp_attr,
-					ARRAY_SIZE(f8000_in_temp_attr));
+					f8000_temp_attr,
+					ARRAY_SIZE(f8000_temp_attr));
 			break;
+		default:
+			err = f71882fg_create_sysfs_files(pdev,
+				&fxxxx_temp_attr[0][0],
+				ARRAY_SIZE(fxxxx_temp_attr[0]) * nr_temps);
 		}
 		if (err)
 			goto exit_unregister_sysfs;
+
+		if (f71882fg_has_beep[data->type]) {
+			err = f71882fg_create_sysfs_files(pdev,
+					&fxxxx_temp_beep_attr[0][0],
+					ARRAY_SIZE(fxxxx_temp_beep_attr[0])
+						* nr_temps);
+			if (err)
+				goto exit_unregister_sysfs;
+		}
+
+		for (i = 0; i < F71882FG_MAX_INS; i++) {
+			if (f71882fg_has_in[data->type][i]) {
+				err = device_create_file(&pdev->dev,
+						&fxxxx_in_attr[i].dev_attr);
+				if (err)
+					goto exit_unregister_sysfs;
+			}
+		}
+		if (f71882fg_has_in1_alarm[data->type]) {
+			err = f71882fg_create_sysfs_files(pdev,
+					fxxxx_in1_alarm_attr,
+					ARRAY_SIZE(fxxxx_in1_alarm_attr));
+			if (err)
+				goto exit_unregister_sysfs;
+		}
 	}
 
 	if (start_reg & 0x02) {
+		switch (data->type) {
+		case f71808e:
+		case f71869:
+			/* These always have signed auto point temps */
+			data->auto_point_temp_signed = 1;
+			/* Fall through to select correct fan/pwm reg bank! */
+		case f71889fg:
+		case f71889ed:
+			reg = f71882fg_read8(data, F71882FG_REG_FAN_FAULT_T);
+			if (reg & F71882FG_FAN_NEG_TEMP_EN)
+				data->auto_point_temp_signed = 1;
+			/* Ensure banked pwm registers point to right bank */
+			reg &= ~F71882FG_FAN_PROG_SEL;
+			f71882fg_write8(data, F71882FG_REG_FAN_FAULT_T, reg);
+			break;
+		default:
+			break;
+		}
+
 		data->pwm_enable =
 			f71882fg_read8(data, F71882FG_REG_PWM_ENABLE);
 
@@ -2013,8 +2163,11 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		case f71862fg:
 			err = (data->pwm_enable & 0x15) != 0x15;
 			break;
+		case f71808e:
+		case f71869:
 		case f71882fg:
 		case f71889fg:
+		case f71889ed:
 			err = 0;
 			break;
 		case f8000:
@@ -2034,20 +2187,50 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		if (err)
 			goto exit_unregister_sysfs;
 
-		if (data->type == f71862fg || data->type == f71882fg ||
-		    data->type == f71889fg) {
+		if (f71882fg_has_beep[data->type]) {
 			err = f71882fg_create_sysfs_files(pdev,
 					fxxxx_fan_beep_attr, nr_fans);
 			if (err)
 				goto exit_unregister_sysfs;
 		}
 
+		switch (data->type) {
+		case f71808e:
+		case f71869:
+		case f71889fg:
+		case f71889ed:
+			for (i = 0; i < nr_fans; i++) {
+				data->pwm_auto_point_mapping[i] =
+					f71882fg_read8(data,
+						F71882FG_REG_POINT_MAPPING(i));
+				if ((data->pwm_auto_point_mapping[i] & 0x80) ||
+				    (data->pwm_auto_point_mapping[i] & 3) == 0)
+					break;
+			}
+			if (i != nr_fans) {
+				dev_warn(&pdev->dev,
+					 "Auto pwm controlled by raw digital "
+					 "data, disabling pwm auto_point "
+					 "sysfs attributes\n");
+				goto no_pwm_auto_point;
+			}
+			break;
+		default:
+			break;
+		}
+
 		switch (data->type) {
 		case f71862fg:
 			err = f71882fg_create_sysfs_files(pdev,
 					f71862fg_auto_pwm_attr,
 					ARRAY_SIZE(f71862fg_auto_pwm_attr));
 			break;
+		case f71808e:
+		case f71869:
+			err = f71882fg_create_sysfs_files(pdev,
+					f71869_auto_pwm_attr,
+					ARRAY_SIZE(f71869_auto_pwm_attr));
+			break;
 		case f8000:
 			err = f71882fg_create_sysfs_files(pdev,
 					f8000_fan_attr,
@@ -2058,23 +2241,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 					f8000_auto_pwm_attr,
 					ARRAY_SIZE(f8000_auto_pwm_attr));
 			break;
-		case f71889fg:
-			for (i = 0; i < nr_fans; i++) {
-				data->pwm_auto_point_mapping[i] =
-					f71882fg_read8(data,
-						F71882FG_REG_POINT_MAPPING(i));
-				if (data->pwm_auto_point_mapping[i] & 0x80)
-					break;
-			}
-			if (i != nr_fans) {
-				dev_warn(&pdev->dev,
-					 "Auto pwm controlled by raw digital "
-					 "data, disabling pwm auto_point "
-					 "sysfs attributes\n");
-				break;
-			}
-			/* fall through */
-		default: /* f71858fg / f71882fg */
+		default:
 			err = f71882fg_create_sysfs_files(pdev,
 				&fxxxx_auto_pwm_attr[0][0],
 				ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
@@ -2082,6 +2249,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		if (err)
 			goto exit_unregister_sysfs;
 
+no_pwm_auto_point:
 		for (i = 0; i < nr_fans; i++)
 			dev_info(&pdev->dev, "Fan: %d is in %s mode\n", i + 1,
 				 (data->pwm_enable & (1 << 2 * i)) ?
@@ -2108,7 +2276,8 @@ exit_free:
 static int f71882fg_remove(struct platform_device *pdev)
 {
 	struct f71882fg_data *data = platform_get_drvdata(pdev);
-	int nr_fans = (data->type == f71882fg) ? 4 : 3;
+	int i, nr_fans = (data->type == f71882fg) ? 4 : 3;
+	int nr_temps = (data->type == f71808e) ? 2 : 3;
 	u8 start_reg = f71882fg_read8(data, F71882FG_REG_START);
 
 	if (data->hwmon_dev)
@@ -2121,29 +2290,39 @@ static int f71882fg_remove(struct platform_device *pdev)
 		case f71858fg:
 			if (data->temp_config & 0x10)
 				f71882fg_remove_sysfs_files(pdev,
-					f8000_in_temp_attr,
-					ARRAY_SIZE(f8000_in_temp_attr));
+					f8000_temp_attr,
+					ARRAY_SIZE(f8000_temp_attr));
 			else
 				f71882fg_remove_sysfs_files(pdev,
-					f71858fg_in_temp_attr,
-					ARRAY_SIZE(f71858fg_in_temp_attr));
-			break;
-		case f71882fg:
-		case f71889fg:
-			f71882fg_remove_sysfs_files(pdev,
-					fxxxx_in1_alarm_attr,
-					ARRAY_SIZE(fxxxx_in1_alarm_attr));
-			/* fall through! */
-		case f71862fg:
-			f71882fg_remove_sysfs_files(pdev,
-					fxxxx_in_temp_attr,
-					ARRAY_SIZE(fxxxx_in_temp_attr));
+					f71858fg_temp_attr,
+					ARRAY_SIZE(f71858fg_temp_attr));
 			break;
 		case f8000:
 			f71882fg_remove_sysfs_files(pdev,
-					f8000_in_temp_attr,
-					ARRAY_SIZE(f8000_in_temp_attr));
+					f8000_temp_attr,
+					ARRAY_SIZE(f8000_temp_attr));
 			break;
+		default:
+			f71882fg_remove_sysfs_files(pdev,
+				&fxxxx_temp_attr[0][0],
+				ARRAY_SIZE(fxxxx_temp_attr[0]) * nr_temps);
+		}
+		if (f71882fg_has_beep[data->type]) {
+			f71882fg_remove_sysfs_files(pdev,
+			       &fxxxx_temp_beep_attr[0][0],
+			       ARRAY_SIZE(fxxxx_temp_beep_attr[0]) * nr_temps);
+		}
+
+		for (i = 0; i < F71882FG_MAX_INS; i++) {
+			if (f71882fg_has_in[data->type][i]) {
+				device_remove_file(&pdev->dev,
+						&fxxxx_in_attr[i].dev_attr);
+			}
+		}
+		if (f71882fg_has_in1_alarm[data->type]) {
+			f71882fg_remove_sysfs_files(pdev,
+					fxxxx_in1_alarm_attr,
+					ARRAY_SIZE(fxxxx_in1_alarm_attr));
 		}
 	}
 
@@ -2151,10 +2330,10 @@ static int f71882fg_remove(struct platform_device *pdev)
 		f71882fg_remove_sysfs_files(pdev, &fxxxx_fan_attr[0][0],
 				ARRAY_SIZE(fxxxx_fan_attr[0]) * nr_fans);
 
-		if (data->type == f71862fg || data->type == f71882fg ||
-		    data->type == f71889fg)
+		if (f71882fg_has_beep[data->type]) {
 			f71882fg_remove_sysfs_files(pdev,
 					fxxxx_fan_beep_attr, nr_fans);
+		}
 
 		switch (data->type) {
 		case f71862fg:
@@ -2162,6 +2341,12 @@ static int f71882fg_remove(struct platform_device *pdev)
 					f71862fg_auto_pwm_attr,
 					ARRAY_SIZE(f71862fg_auto_pwm_attr));
 			break;
+		case f71808e:
+		case f71869:
+			f71882fg_remove_sysfs_files(pdev,
+					f71869_auto_pwm_attr,
+					ARRAY_SIZE(f71869_auto_pwm_attr));
+			break;
 		case f8000:
 			f71882fg_remove_sysfs_files(pdev,
 					f8000_fan_attr,
@@ -2170,7 +2355,7 @@ static int f71882fg_remove(struct platform_device *pdev)
 					f8000_auto_pwm_attr,
 					ARRAY_SIZE(f8000_auto_pwm_attr));
 			break;
-		default: /* f71858fg / f71882fg / f71889fg */
+		default:
 			f71882fg_remove_sysfs_files(pdev,
 				&fxxxx_auto_pwm_attr[0][0],
 				ARRAY_SIZE(fxxxx_auto_pwm_attr[0]) * nr_fans);
@@ -2200,18 +2385,27 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
 
 	devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
 	switch (devid) {
+	case SIO_F71808E_ID:
+		sio_data->type = f71808e;
+		break;
 	case SIO_F71858_ID:
 		sio_data->type = f71858fg;
 		break;
 	case SIO_F71862_ID:
 		sio_data->type = f71862fg;
 		break;
+	case SIO_F71869_ID:
+		sio_data->type = f71869;
+		break;
 	case SIO_F71882_ID:
 		sio_data->type = f71882fg;
 		break;
 	case SIO_F71889_ID:
 		sio_data->type = f71889fg;
 		break;
+	case SIO_F71889E_ID:
+		sio_data->type = f71889ed;
+		break;
 	case SIO_F8000_ID:
 		sio_data->type = f8000;
 		break;

drivers/hwmon/lineage-pem.c

@@ -0,0 +1,586 @@
+/*
+ * Driver for Lineage Compact Power Line series of power entry modules.
+ *
+ * Copyright (C) 2010, 2011 Ericsson AB.
+ *
+ * Documentation:
+ *  http://www.lineagepower.com/oem/pdf/CPLI2C.pdf
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+
+/*
+ * This driver supports various Lineage Compact Power Line DC/DC and AC/DC
+ * converters such as CP1800, CP2000AC, CP2000DC, CP2100DC, and others.
+ *
+ * The devices are nominally PMBus compliant. However, most standard PMBus
+ * commands are not supported. Specifically, all hardware monitoring and
+ * status reporting commands are non-standard. For this reason, a standard
+ * PMBus driver can not be used.
+ *
+ * All Lineage CPL devices have a built-in I2C bus master selector (PCA9541).
+ * To ensure device access, this driver should only be used as client driver
+ * to the pca9541 I2C master selector driver.
+ */
+
+/* Command codes */
+#define PEM_OPERATION		0x01
+#define PEM_CLEAR_INFO_FLAGS	0x03
+#define PEM_VOUT_COMMAND	0x21
+#define PEM_VOUT_OV_FAULT_LIMIT	0x40
+#define PEM_READ_DATA_STRING	0xd0
+#define PEM_READ_INPUT_STRING	0xdc
+#define PEM_READ_FIRMWARE_REV	0xdd
+#define PEM_READ_RUN_TIMER	0xde
+#define PEM_FAN_HI_SPEED	0xdf
+#define PEM_FAN_NORMAL_SPEED	0xe0
+#define PEM_READ_FAN_SPEED	0xe1
+
+/* offsets in data string */
+#define PEM_DATA_STATUS_2	0
+#define PEM_DATA_STATUS_1	1
+#define PEM_DATA_ALARM_2	2
+#define PEM_DATA_ALARM_1	3
+#define PEM_DATA_VOUT_LSB	4
+#define PEM_DATA_VOUT_MSB	5
+#define PEM_DATA_CURRENT	6
+#define PEM_DATA_TEMP		7
+
+/* Virtual entries, to report constants */
+#define PEM_DATA_TEMP_MAX	10
+#define PEM_DATA_TEMP_CRIT	11
+
+/* offsets in input string */
+#define PEM_INPUT_VOLTAGE	0
+#define PEM_INPUT_POWER_LSB	1
+#define PEM_INPUT_POWER_MSB	2
+
+/* offsets in fan data */
+#define PEM_FAN_ADJUSTMENT	0
+#define PEM_FAN_FAN1		1
+#define PEM_FAN_FAN2		2
+#define PEM_FAN_FAN3		3
+
+/* Status register bits */
+#define STS1_OUTPUT_ON		(1 << 0)
+#define STS1_LEDS_FLASHING	(1 << 1)
+#define STS1_EXT_FAULT		(1 << 2)
+#define STS1_SERVICE_LED_ON	(1 << 3)
+#define STS1_SHUTDOWN_OCCURRED	(1 << 4)
+#define STS1_INT_FAULT		(1 << 5)
+#define STS1_ISOLATION_TEST_OK	(1 << 6)
+
+#define STS2_ENABLE_PIN_HI	(1 << 0)
+#define STS2_DATA_OUT_RANGE	(1 << 1)
+#define STS2_RESTARTED_OK	(1 << 1)
+#define STS2_ISOLATION_TEST_FAIL (1 << 3)
+#define STS2_HIGH_POWER_CAP	(1 << 4)
+#define STS2_INVALID_INSTR	(1 << 5)
+#define STS2_WILL_RESTART	(1 << 6)
+#define STS2_PEC_ERR		(1 << 7)
+
+/* Alarm register bits */
+#define ALRM1_VIN_OUT_LIMIT	(1 << 0)
+#define ALRM1_VOUT_OUT_LIMIT	(1 << 1)
+#define ALRM1_OV_VOLT_SHUTDOWN	(1 << 2)
+#define ALRM1_VIN_OVERCURRENT	(1 << 3)
+#define ALRM1_TEMP_WARNING	(1 << 4)
+#define ALRM1_TEMP_SHUTDOWN	(1 << 5)
+#define ALRM1_PRIMARY_FAULT	(1 << 6)
+#define ALRM1_POWER_LIMIT	(1 << 7)
+
+#define ALRM2_5V_OUT_LIMIT	(1 << 1)
+#define ALRM2_TEMP_FAULT	(1 << 2)
+#define ALRM2_OV_LOW		(1 << 3)
+#define ALRM2_DCDC_TEMP_HIGH	(1 << 4)
+#define ALRM2_PRI_TEMP_HIGH	(1 << 5)
+#define ALRM2_NO_PRIMARY	(1 << 6)
+#define ALRM2_FAN_FAULT		(1 << 7)
+
+#define FIRMWARE_REV_LEN	4
+#define DATA_STRING_LEN		9
+#define INPUT_STRING_LEN	5	/* 4 for most devices	*/
+#define FAN_SPEED_LEN		5
+
+struct pem_data {
+	struct device *hwmon_dev;
+
+	struct mutex update_lock;
+	bool valid;
+	bool fans_supported;
+	int input_length;
+	unsigned long last_updated;	/* in jiffies */
+
+	u8 firmware_rev[FIRMWARE_REV_LEN];
+	u8 data_string[DATA_STRING_LEN];
+	u8 input_string[INPUT_STRING_LEN];
+	u8 fan_speed[FAN_SPEED_LEN];
+};
+
+static int pem_read_block(struct i2c_client *client, u8 command, u8 *data,
+			  int data_len)
+{
+	u8 block_buffer[I2C_SMBUS_BLOCK_MAX];
+	int result;
+
+	result = i2c_smbus_read_block_data(client, command, block_buffer);
+	if (unlikely(result < 0))
+		goto abort;
+	if (unlikely(result == 0xff || result != data_len)) {
+		result = -EIO;
+		goto abort;
+	}
+	memcpy(data, block_buffer, data_len);
+	result = 0;
+abort:
+	return result;
+}
+
+static struct pem_data *pem_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pem_data *data = i2c_get_clientdata(client);
+	struct pem_data *ret = data;
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+		int result;
+
+		/* Read data string */
+		result = pem_read_block(client, PEM_READ_DATA_STRING,
+					data->data_string,
+					sizeof(data->data_string));
+		if (unlikely(result < 0)) {
+			ret = ERR_PTR(result);
+			goto abort;
+		}
+
+		/* Read input string */
+		if (data->input_length) {
+			result = pem_read_block(client, PEM_READ_INPUT_STRING,
+						data->input_string,
+						data->input_length);
+			if (unlikely(result < 0)) {
+				ret = ERR_PTR(result);
+				goto abort;
+			}
+		}
+
+		/* Read fan speeds */
+		if (data->fans_supported) {
+			result = pem_read_block(client, PEM_READ_FAN_SPEED,
+						data->fan_speed,
+						sizeof(data->fan_speed));
+			if (unlikely(result < 0)) {
+				ret = ERR_PTR(result);
+				goto abort;
+			}
+		}
+
+		i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS);
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+abort:
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+static long pem_get_data(u8 *data, int len, int index)
+{
+	long val;
+
+	switch (index) {
+	case PEM_DATA_VOUT_LSB:
+		val = (data[index] + (data[index+1] << 8)) * 5 / 2;
+		break;
+	case PEM_DATA_CURRENT:
+		val = data[index] * 200;
+		break;
+	case PEM_DATA_TEMP:
+		val = data[index] * 1000;
+		break;
+	case PEM_DATA_TEMP_MAX:
+		val = 97 * 1000;	/* 97 degrees C per datasheet */
+		break;
+	case PEM_DATA_TEMP_CRIT:
+		val = 107 * 1000;	/* 107 degrees C per datasheet */
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		val = 0;
+	}
+	return val;
+}
+
+static long pem_get_input(u8 *data, int len, int index)
+{
+	long val;
+
+	switch (index) {
+	case PEM_INPUT_VOLTAGE:
+		if (len == INPUT_STRING_LEN)
+			val = (data[index] + (data[index+1] << 8) - 75) * 1000;
+		else
+			val = (data[index] - 75) * 1000;
+		break;
+	case PEM_INPUT_POWER_LSB:
+		if (len == INPUT_STRING_LEN)
+			index++;
+		val = (data[index] + (data[index+1] << 8)) * 1000000L;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		val = 0;
+	}
+	return val;
+}
+
+static long pem_get_fan(u8 *data, int len, int index)
+{
+	long val;
+
+	switch (index) {
+	case PEM_FAN_FAN1:
+	case PEM_FAN_FAN2:
+	case PEM_FAN_FAN3:
+		val = data[index] * 100;
+		break;
+	default:
+		WARN_ON_ONCE(1);
+		val = 0;
+	}
+	return val;
+}
+
+/*
+ * Show boolean, either a fault or an alarm.
+ * .nr points to the register, .index is the bit mask to check
+ */
+static ssize_t pem_show_bool(struct device *dev,
+			     struct device_attribute *da, char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da);
+	struct pem_data *data = pem_update_device(dev);
+	u8 status;
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	status = data->data_string[attr->nr] & attr->index;
+	return snprintf(buf, PAGE_SIZE, "%d\n", !!status);
+}
+
+static ssize_t pem_show_data(struct device *dev, struct device_attribute *da,
+			     char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct pem_data *data = pem_update_device(dev);
+	long value;
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	value = pem_get_data(data->data_string, sizeof(data->data_string),
+			     attr->index);
+
+	return snprintf(buf, PAGE_SIZE, "%ld\n", value);
+}
+
+static ssize_t pem_show_input(struct device *dev, struct device_attribute *da,
+			      char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct pem_data *data = pem_update_device(dev);
+	long value;
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	value = pem_get_input(data->input_string, sizeof(data->input_string),
+			      attr->index);
+
+	return snprintf(buf, PAGE_SIZE, "%ld\n", value);
+}
+
+static ssize_t pem_show_fan(struct device *dev, struct device_attribute *da,
+			    char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct pem_data *data = pem_update_device(dev);
+	long value;
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	value = pem_get_fan(data->fan_speed, sizeof(data->fan_speed),
+			    attr->index);
+
+	return snprintf(buf, PAGE_SIZE, "%ld\n", value);
+}
+
+/* Voltages */
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, pem_show_data, NULL,
+			  PEM_DATA_VOUT_LSB);
+static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_VOUT_OUT_LIMIT);
+static SENSOR_DEVICE_ATTR_2(in1_crit_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_OV_VOLT_SHUTDOWN);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, pem_show_input, NULL,
+			  PEM_INPUT_VOLTAGE);
+static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1,
+			    ALRM1_VIN_OUT_LIMIT | ALRM1_PRIMARY_FAULT);
+
+/* Currents */
+static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, pem_show_data, NULL,
+			  PEM_DATA_CURRENT);
+static SENSOR_DEVICE_ATTR_2(curr1_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_VIN_OVERCURRENT);
+
+/* Power */
+static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, pem_show_input, NULL,
+			  PEM_INPUT_POWER_LSB);
+static SENSOR_DEVICE_ATTR_2(power1_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_POWER_LIMIT);
+
+/* Fans */
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, pem_show_fan, NULL,
+			  PEM_FAN_FAN1);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, pem_show_fan, NULL,
+			  PEM_FAN_FAN2);
+static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, pem_show_fan, NULL,
+			  PEM_FAN_FAN3);
+static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_2, ALRM2_FAN_FAULT);
+
+/* Temperatures */
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, pem_show_data, NULL,
+			  PEM_DATA_TEMP);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO, pem_show_data, NULL,
+			  PEM_DATA_TEMP_MAX);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IRUGO, pem_show_data, NULL,
+			  PEM_DATA_TEMP_CRIT);
+static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_TEMP_WARNING);
+static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_1, ALRM1_TEMP_SHUTDOWN);
+static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, pem_show_bool, NULL,
+			    PEM_DATA_ALARM_2, ALRM2_TEMP_FAULT);
+
+static struct attribute *pem_attributes[] = {
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in1_alarm.dev_attr.attr,
+	&sensor_dev_attr_in1_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_in2_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_curr1_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_power1_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_fan1_alarm.dev_attr.attr,
+
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit.dev_attr.attr,
+	&sensor_dev_attr_temp1_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_fault.dev_attr.attr,
+
+	NULL,
+};
+
+static const struct attribute_group pem_group = {
+	.attrs = pem_attributes,
+};
+
+static struct attribute *pem_input_attributes[] = {
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+	&sensor_dev_attr_curr1_input.dev_attr.attr,
+	&sensor_dev_attr_power1_input.dev_attr.attr,
+};
+
+static const struct attribute_group pem_input_group = {
+	.attrs = pem_input_attributes,
+};
+
+static struct attribute *pem_fan_attributes[] = {
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan3_input.dev_attr.attr,
+};
+
+static const struct attribute_group pem_fan_group = {
+	.attrs = pem_fan_attributes,
+};
+
+static int pem_probe(struct i2c_client *client,
+		     const struct i2c_device_id *id)
+{
+	struct i2c_adapter *adapter = client->adapter;
+	struct pem_data *data;
+	int ret;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BLOCK_DATA
+				     | I2C_FUNC_SMBUS_WRITE_BYTE))
+		return -ENODEV;
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+
+	/*
+	 * We use the next two commands to determine if the device is really
+	 * there.
+	 */
+	ret = pem_read_block(client, PEM_READ_FIRMWARE_REV,
+			     data->firmware_rev, sizeof(data->firmware_rev));
+	if (ret < 0)
+		goto out_kfree;
+
+	ret = i2c_smbus_write_byte(client, PEM_CLEAR_INFO_FLAGS);
+	if (ret < 0)
+		goto out_kfree;
+
+	dev_info(&client->dev, "Firmware revision %d.%d.%d\n",
+		 data->firmware_rev[0], data->firmware_rev[1],
+		 data->firmware_rev[2]);
+
+	/* Register sysfs hooks */
+	ret = sysfs_create_group(&client->dev.kobj, &pem_group);
+	if (ret)
+		goto out_kfree;
+
+	/*
+	 * Check if input readings are supported.
+	 * This is the case if we can read input data,
+	 * and if the returned data is not all zeros.
+	 * Note that input alarms are always supported.
+	 */
+	ret = pem_read_block(client, PEM_READ_INPUT_STRING,
+			     data->input_string,
+			     sizeof(data->input_string) - 1);
+	if (!ret && (data->input_string[0] || data->input_string[1] ||
+		     data->input_string[2]))
+		data->input_length = sizeof(data->input_string) - 1;
+	else if (ret < 0) {
+		/* Input string is one byte longer for some devices */
+		ret = pem_read_block(client, PEM_READ_INPUT_STRING,
+				    data->input_string,
+				    sizeof(data->input_string));
+		if (!ret && (data->input_string[0] || data->input_string[1] ||
+			    data->input_string[2] || data->input_string[3]))
+			data->input_length = sizeof(data->input_string);
+	}
+	ret = 0;
+	if (data->input_length) {
+		ret = sysfs_create_group(&client->dev.kobj, &pem_input_group);
+		if (ret)
+			goto out_remove_groups;
+	}
+
+	/*
+	 * Check if fan speed readings are supported.
+	 * This is the case if we can read fan speed data,
+	 * and if the returned data is not all zeros.
+	 * Note that the fan alarm is always supported.
+	 */
+	ret = pem_read_block(client, PEM_READ_FAN_SPEED,
+			     data->fan_speed,
+			     sizeof(data->fan_speed));
+	if (!ret && (data->fan_speed[0] || data->fan_speed[1] ||
+		     data->fan_speed[2] || data->fan_speed[3])) {
+		data->fans_supported = true;
+		ret = sysfs_create_group(&client->dev.kobj, &pem_fan_group);
+		if (ret)
+			goto out_remove_groups;
+	}
+
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		ret = PTR_ERR(data->hwmon_dev);
+		goto out_remove_groups;
+	}
+
+	return 0;
+
+out_remove_groups:
+	sysfs_remove_group(&client->dev.kobj, &pem_input_group);
+	sysfs_remove_group(&client->dev.kobj, &pem_fan_group);
+	sysfs_remove_group(&client->dev.kobj, &pem_group);
+out_kfree:
+	kfree(data);
+	return ret;
+}
+
+static int pem_remove(struct i2c_client *client)
+{
+	struct pem_data *data = i2c_get_clientdata(client);
+
+	hwmon_device_unregister(data->hwmon_dev);
+
+	sysfs_remove_group(&client->dev.kobj, &pem_input_group);
+	sysfs_remove_group(&client->dev.kobj, &pem_fan_group);
+	sysfs_remove_group(&client->dev.kobj, &pem_group);
+
+	kfree(data);
+	return 0;
+}
+
+static const struct i2c_device_id pem_id[] = {
+	{"lineage_pem", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, pem_id);
+
+static struct i2c_driver pem_driver = {
+	.driver = {
+		   .name = "lineage_pem",
+		   },
+	.probe = pem_probe,
+	.remove = pem_remove,
+	.id_table = pem_id,
+};
+
+static int __init pem_init(void)
+{
+	return i2c_add_driver(&pem_driver);
+}
+
+static void __exit pem_exit(void)
+{
+	i2c_del_driver(&pem_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck <guenter.roeck@ericsson.com>");
+MODULE_DESCRIPTION("Lineage CPL PEM hardware monitoring driver");
+MODULE_LICENSE("GPL");
+
+module_init(pem_init);
+module_exit(pem_exit);

drivers/hwmon/lis3lv02d_spi.c

@@ -16,6 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/workqueue.h>
 #include <linux/spi/spi.h>
+#include <linux/pm.h>
 
 #include "lis3lv02d.h"
 
@@ -88,9 +89,10 @@ static int __devexit lis302dl_spi_remove(struct spi_device *spi)
 	return lis3lv02d_remove_fs(&lis3_dev);
 }
 
-#ifdef CONFIG_PM
-static int lis3lv02d_spi_suspend(struct spi_device *spi, pm_message_t mesg)
+#ifdef CONFIG_PM_SLEEP
+static int lis3lv02d_spi_suspend(struct device *dev)
 {
+	struct spi_device *spi = to_spi_device(dev);
 	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
 
 	if (!lis3->pdata || !lis3->pdata->wakeup_flags)
@@ -99,8 +101,9 @@ static int lis3lv02d_spi_suspend(struct spi_device *spi, pm_message_t mesg)
 	return 0;
 }
 
-static int lis3lv02d_spi_resume(struct spi_device *spi)
+static int lis3lv02d_spi_resume(struct device *dev)
 {
+	struct spi_device *spi = to_spi_device(dev);
 	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
 
 	if (!lis3->pdata || !lis3->pdata->wakeup_flags)
@@ -108,21 +111,19 @@ static int lis3lv02d_spi_resume(struct spi_device *spi)
 
 	return 0;
 }
-
-#else
-#define lis3lv02d_spi_suspend	NULL
-#define lis3lv02d_spi_resume	NULL
 #endif
 
+static SIMPLE_DEV_PM_OPS(lis3lv02d_spi_pm, lis3lv02d_spi_suspend,
+			 lis3lv02d_spi_resume);
+
 static struct spi_driver lis302dl_spi_driver = {
 	.driver	 = {
 		.name   = DRV_NAME,
 		.owner  = THIS_MODULE,
+		.pm	= &lis3lv02d_spi_pm,
 	},
 	.probe	= lis302dl_spi_probe,
 	.remove	= __devexit_p(lis302dl_spi_remove),
-	.suspend = lis3lv02d_spi_suspend,
-	.resume  = lis3lv02d_spi_resume,
 };
 
 static int __init lis302dl_init(void)

drivers/hwmon/lm85.c

@@ -41,7 +41,7 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 enum chips {
 	any_chip, lm85b, lm85c,
 	adm1027, adt7463, adt7468,
-	emc6d100, emc6d102, emc6d103
+	emc6d100, emc6d102, emc6d103, emc6d103s
 };
 
 /* The LM85 registers */
@@ -283,10 +283,6 @@ struct lm85_zone {
 	u8 hyst;	/* Low limit hysteresis. (0-15) */
 	u8 range;	/* Temp range, encoded */
 	s8 critical;	/* "All fans ON" temp limit */
-	u8 off_desired; /* Actual "off" temperature specified.  Preserved
-			 * to prevent "drift" as other autofan control
-			 * values change.
-			 */
 	u8 max_desired; /* Actual "max" temperature specified.  Preserved
 			 * to prevent "drift" as other autofan control
 			 * values change.
@@ -306,6 +302,8 @@ struct lm85_data {
 	const int *freq_map;
 	enum chips type;
 
+	bool has_vid5;	/* true if VID5 is configured for ADT7463 or ADT7468 */
+
 	struct mutex update_lock;
 	int valid;		/* !=0 if following fields are valid */
 	unsigned long last_reading;	/* In jiffies */
@@ -352,6 +350,7 @@ static const struct i2c_device_id lm85_id[] = {
 	{ "emc6d101", emc6d100 },
 	{ "emc6d102", emc6d102 },
 	{ "emc6d103", emc6d103 },
+	{ "emc6d103s", emc6d103s },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lm85_id);
@@ -420,8 +419,7 @@ static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr,
 	struct lm85_data *data = lm85_update_device(dev);
 	int vid;
 
-	if ((data->type == adt7463 || data->type == adt7468) &&
-	    (data->vid & 0x80)) {
+	if (data->has_vid5) {
 		/* 6-pin VID (VRM 10) */
 		vid = vid_from_reg(data->vid & 0x3f, data->vrm);
 	} else {
@@ -891,7 +889,6 @@ static ssize_t set_temp_auto_temp_off(struct device *dev,
 
 	mutex_lock(&data->update_lock);
 	min = TEMP_FROM_REG(data->zone[nr].limit);
-	data->zone[nr].off_desired = TEMP_TO_REG(val);
 	data->zone[nr].hyst = HYST_TO_REG(min - val);
 	if (nr == 0 || nr == 1) {
 		lm85_write_value(client, LM85_REG_AFAN_HYST1,
@@ -934,18 +931,6 @@ static ssize_t set_temp_auto_temp_min(struct device *dev,
 		((data->zone[nr].range & 0x0f) << 4)
 		| (data->pwm_freq[nr] & 0x07));
 
-/* Update temp_auto_hyst and temp_auto_off */
-	data->zone[nr].hyst = HYST_TO_REG(TEMP_FROM_REG(
-		data->zone[nr].limit) - TEMP_FROM_REG(
-		data->zone[nr].off_desired));
-	if (nr == 0 || nr == 1) {
-		lm85_write_value(client, LM85_REG_AFAN_HYST1,
-			(data->zone[0].hyst << 4)
-			| data->zone[1].hyst);
-	} else {
-		lm85_write_value(client, LM85_REG_AFAN_HYST2,
-			(data->zone[2].hyst << 4));
-	}
 	mutex_unlock(&data->update_lock);
 	return count;
 }
@@ -1084,13 +1069,7 @@ static struct attribute *lm85_attributes[] = {
 	&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
 	&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
 	&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
-	&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
-	&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
-	&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
 
-	&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
-	&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
-	&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
 	&sensor_dev_attr_temp1_auto_temp_min.dev_attr.attr,
 	&sensor_dev_attr_temp2_auto_temp_min.dev_attr.attr,
 	&sensor_dev_attr_temp3_auto_temp_min.dev_attr.attr,
@@ -1111,6 +1090,26 @@ static const struct attribute_group lm85_group = {
 	.attrs = lm85_attributes,
 };
 
+static struct attribute *lm85_attributes_minctl[] = {
+	&sensor_dev_attr_pwm1_auto_pwm_minctl.dev_attr.attr,
+	&sensor_dev_attr_pwm2_auto_pwm_minctl.dev_attr.attr,
+	&sensor_dev_attr_pwm3_auto_pwm_minctl.dev_attr.attr,
+};
+
+static const struct attribute_group lm85_group_minctl = {
+	.attrs = lm85_attributes_minctl,
+};
+
+static struct attribute *lm85_attributes_temp_off[] = {
+	&sensor_dev_attr_temp1_auto_temp_off.dev_attr.attr,
+	&sensor_dev_attr_temp2_auto_temp_off.dev_attr.attr,
+	&sensor_dev_attr_temp3_auto_temp_off.dev_attr.attr,
+};
+
+static const struct attribute_group lm85_group_temp_off = {
+	.attrs = lm85_attributes_temp_off,
+};
+
 static struct attribute *lm85_attributes_in4[] = {
 	&sensor_dev_attr_in4_input.dev_attr.attr,
 	&sensor_dev_attr_in4_min.dev_attr.attr,
@@ -1258,16 +1257,9 @@ static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
 		case LM85_VERSTEP_EMC6D103_A1:
 			type_name = "emc6d103";
 			break;
-		/*
-		 * Registers apparently missing in EMC6D103S/EMC6D103:A2
-		 * compared to EMC6D103:A0, EMC6D103:A1, and EMC6D102
-		 * (according to the data sheets), but used unconditionally
-		 * in the driver: 62[5:7], 6D[0:7], and 6E[0:7].
-		 * So skip EMC6D103S for now.
 		case LM85_VERSTEP_EMC6D103S:
 			type_name = "emc6d103s";
 			break;
-		 */
 		}
 	} else {
 		dev_dbg(&adapter->dev,
@@ -1280,6 +1272,19 @@ static int lm85_detect(struct i2c_client *client, struct i2c_board_info *info)
 	return 0;
 }
 
+static void lm85_remove_files(struct i2c_client *client, struct lm85_data *data)
+{
+	sysfs_remove_group(&client->dev.kobj, &lm85_group);
+	if (data->type != emc6d103s) {
+		sysfs_remove_group(&client->dev.kobj, &lm85_group_minctl);
+		sysfs_remove_group(&client->dev.kobj, &lm85_group_temp_off);
+	}
+	if (!data->has_vid5)
+		sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
+	if (data->type == emc6d100)
+		sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
+}
+
 static int lm85_probe(struct i2c_client *client,
 		      const struct i2c_device_id *id)
 {
@@ -1302,6 +1307,7 @@ static int lm85_probe(struct i2c_client *client,
 	case emc6d100:
 	case emc6d102:
 	case emc6d103:
+	case emc6d103s:
 		data->freq_map = adm1027_freq_map;
 		break;
 	default:
@@ -1319,11 +1325,26 @@ static int lm85_probe(struct i2c_client *client,
 	if (err)
 		goto err_kfree;
 
+	/* minctl and temp_off exist on all chips except emc6d103s */
+	if (data->type != emc6d103s) {
+		err = sysfs_create_group(&client->dev.kobj, &lm85_group_minctl);
+		if (err)
+			goto err_kfree;
+		err = sysfs_create_group(&client->dev.kobj,
+					 &lm85_group_temp_off);
+		if (err)
+			goto err_kfree;
+	}
+
 	/* The ADT7463/68 have an optional VRM 10 mode where pin 21 is used
 	   as a sixth digital VID input rather than an analog input. */
-	data->vid = lm85_read_value(client, LM85_REG_VID);
-	if (!((data->type == adt7463 || data->type == adt7468) &&
-	    (data->vid & 0x80)))
+	if (data->type == adt7463 || data->type == adt7468) {
+		u8 vid = lm85_read_value(client, LM85_REG_VID);
+		if (vid & 0x80)
+			data->has_vid5 = true;
+	}
+
+	if (!data->has_vid5)
 		if ((err = sysfs_create_group(&client->dev.kobj,
 					&lm85_group_in4)))
 			goto err_remove_files;
@@ -1344,10 +1365,7 @@ static int lm85_probe(struct i2c_client *client,
 
 	/* Error out and cleanup code */
  err_remove_files:
-	sysfs_remove_group(&client->dev.kobj, &lm85_group);
-	sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
-	if (data->type == emc6d100)
-		sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
+	lm85_remove_files(client, data);
  err_kfree:
 	kfree(data);
 	return err;
@@ -1357,10 +1375,7 @@ static int lm85_remove(struct i2c_client *client)
 {
 	struct lm85_data *data = i2c_get_clientdata(client);
 	hwmon_device_unregister(data->hwmon_dev);
-	sysfs_remove_group(&client->dev.kobj, &lm85_group);
-	sysfs_remove_group(&client->dev.kobj, &lm85_group_in4);
-	if (data->type == emc6d100)
-		sysfs_remove_group(&client->dev.kobj, &lm85_group_in567);
+	lm85_remove_files(client, data);
 	kfree(data);
 	return 0;
 }
@@ -1457,11 +1472,8 @@ static struct lm85_data *lm85_update_device(struct device *dev)
 			    lm85_read_value(client, LM85_REG_FAN(i));
 		}
 
-		if (!((data->type == adt7463 || data->type == adt7468) &&
-		    (data->vid & 0x80))) {
-			data->in[4] = lm85_read_value(client,
-				      LM85_REG_IN(4));
-		}
+		if (!data->has_vid5)
+			data->in[4] = lm85_read_value(client, LM85_REG_IN(4));
 
 		if (data->type == adt7468)
 			data->cfg5 = lm85_read_value(client, ADT7468_REG_CFG5);
@@ -1487,7 +1499,8 @@ static struct lm85_data *lm85_update_device(struct device *dev)
 			/* More alarm bits */
 			data->alarms |= lm85_read_value(client,
 						EMC6D100_REG_ALARM3) << 16;
-		} else if (data->type == emc6d102 || data->type == emc6d103) {
+		} else if (data->type == emc6d102 || data->type == emc6d103 ||
+			   data->type == emc6d103s) {
 			/* Have to read LSB bits after the MSB ones because
 			   the reading of the MSB bits has frozen the
 			   LSBs (backward from the ADM1027).
@@ -1528,8 +1541,7 @@ static struct lm85_data *lm85_update_device(struct device *dev)
 			    lm85_read_value(client, LM85_REG_FAN_MIN(i));
 		}
 
-		if (!((data->type == adt7463 || data->type == adt7468) &&
-		    (data->vid & 0x80))) {
+		if (!data->has_vid5)  {
 			data->in_min[4] = lm85_read_value(client,
 					  LM85_REG_IN_MIN(4));
 			data->in_max[4] = lm85_read_value(client,
@@ -1573,17 +1585,19 @@ static struct lm85_data *lm85_update_device(struct device *dev)
 			}
 		}
 
-		i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
-		data->autofan[0].min_off = (i & 0x20) != 0;
-		data->autofan[1].min_off = (i & 0x40) != 0;
-		data->autofan[2].min_off = (i & 0x80) != 0;
+		if (data->type != emc6d103s) {
+			i = lm85_read_value(client, LM85_REG_AFAN_SPIKE1);
+			data->autofan[0].min_off = (i & 0x20) != 0;
+			data->autofan[1].min_off = (i & 0x40) != 0;
+			data->autofan[2].min_off = (i & 0x80) != 0;
 
-		i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
-		data->zone[0].hyst = i >> 4;
-		data->zone[1].hyst = i & 0x0f;
+			i = lm85_read_value(client, LM85_REG_AFAN_HYST1);
+			data->zone[0].hyst = i >> 4;
+			data->zone[1].hyst = i & 0x0f;
 
-		i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
-		data->zone[2].hyst = i >> 4;
+			i = lm85_read_value(client, LM85_REG_AFAN_HYST2);
+			data->zone[2].hyst = i >> 4;
+		}
 
 		data->last_config = jiffies;
 	}  /* last_config */

drivers/hwmon/ltc4151.c

@@ -0,0 +1,256 @@
+/*
+ * Driver for Linear Technology LTC4151 High Voltage I2C Current
+ * and Voltage Monitor
+ *
+ * Copyright (C) 2011 AppearTV AS
+ *
+ * Derived from:
+ *
+ *  Driver for Linear Technology LTC4261 I2C Negative Voltage Hot
+ *  Swap Controller
+ *  Copyright (C) 2010 Ericsson AB.
+ *
+ * Datasheet: http://www.linear.com/docs/Datasheet/4151fc.pdf
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+
+/* chip registers */
+#define LTC4151_SENSE_H	0x00
+#define LTC4151_SENSE_L	0x01
+#define LTC4151_VIN_H	0x02
+#define LTC4151_VIN_L	0x03
+#define LTC4151_ADIN_H	0x04
+#define LTC4151_ADIN_L	0x05
+
+struct ltc4151_data {
+	struct device *hwmon_dev;
+
+	struct mutex update_lock;
+	bool valid;
+	unsigned long last_updated; /* in jiffies */
+
+	/* Registers */
+	u8 regs[6];
+};
+
+static struct ltc4151_data *ltc4151_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct ltc4151_data *data = i2c_get_clientdata(client);
+	struct ltc4151_data *ret = data;
+
+	mutex_lock(&data->update_lock);
+
+	/*
+	 * The chip's A/D updates 6 times per second
+	 * (Conversion Rate 6 - 9 Hz)
+	 */
+	if (time_after(jiffies, data->last_updated + HZ / 6) || !data->valid) {
+		int i;
+
+		dev_dbg(&client->dev, "Starting ltc4151 update\n");
+
+		/* Read all registers */
+		for (i = 0; i < ARRAY_SIZE(data->regs); i++) {
+			int val;
+
+			val = i2c_smbus_read_byte_data(client, i);
+			if (unlikely(val < 0)) {
+				dev_dbg(dev,
+					"Failed to read ADC value: error %d\n",
+					val);
+				ret = ERR_PTR(val);
+				goto abort;
+			}
+			data->regs[i] = val;
+		}
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+abort:
+	mutex_unlock(&data->update_lock);
+	return ret;
+}
+
+/* Return the voltage from the given register in mV */
+static int ltc4151_get_value(struct ltc4151_data *data, u8 reg)
+{
+	u32 val;
+
+	val = (data->regs[reg] << 4) + (data->regs[reg + 1] >> 4);
+
+	switch (reg) {
+	case LTC4151_ADIN_H:
+		/* 500uV resolution. Convert to mV. */
+		val = val * 500 / 1000;
+		break;
+	case LTC4151_SENSE_H:
+		/*
+		 * 20uV resolution. Convert to current as measured with
+		 * an 1 mOhm sense resistor, in mA.
+		 */
+		val = val * 20;
+		break;
+	case LTC4151_VIN_H:
+		/* 25 mV per increment */
+		val = val * 25;
+		break;
+	default:
+		/* If we get here, the developer messed up */
+		WARN_ON_ONCE(1);
+		val = 0;
+		break;
+	}
+
+	return val;
+}
+
+static ssize_t ltc4151_show_value(struct device *dev,
+				  struct device_attribute *da, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct ltc4151_data *data = ltc4151_update_device(dev);
+	int value;
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	value = ltc4151_get_value(data, attr->index);
+	return snprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+/*
+ * Input voltages.
+ */
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, \
+	ltc4151_show_value, NULL, LTC4151_VIN_H);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, \
+	ltc4151_show_value, NULL, LTC4151_ADIN_H);
+
+/* Currents (via sense resistor) */
+static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, \
+	ltc4151_show_value, NULL, LTC4151_SENSE_H);
+
+/* Finally, construct an array of pointers to members of the above objects,
+ * as required for sysfs_create_group()
+ */
+static struct attribute *ltc4151_attributes[] = {
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+
+	&sensor_dev_attr_curr1_input.dev_attr.attr,
+
+	NULL,
+};
+
+static const struct attribute_group ltc4151_group = {
+	.attrs = ltc4151_attributes,
+};
+
+static int ltc4151_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct i2c_adapter *adapter = client->adapter;
+	struct ltc4151_data *data;
+	int ret;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -ENODEV;
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		ret = -ENOMEM;
+		goto out_kzalloc;
+	}
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+
+	/* Register sysfs hooks */
+	ret = sysfs_create_group(&client->dev.kobj, &ltc4151_group);
+	if (ret)
+		goto out_sysfs_create_group;
+
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		ret = PTR_ERR(data->hwmon_dev);
+		goto out_hwmon_device_register;
+	}
+
+	return 0;
+
+out_hwmon_device_register:
+	sysfs_remove_group(&client->dev.kobj, &ltc4151_group);
+out_sysfs_create_group:
+	kfree(data);
+out_kzalloc:
+	return ret;
+}
+
+static int ltc4151_remove(struct i2c_client *client)
+{
+	struct ltc4151_data *data = i2c_get_clientdata(client);
+
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &ltc4151_group);
+
+	kfree(data);
+
+	return 0;
+}
+
+static const struct i2c_device_id ltc4151_id[] = {
+	{ "ltc4151", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ltc4151_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ltc4151_driver = {
+	.driver = {
+		.name	= "ltc4151",
+	},
+	.probe		= ltc4151_probe,
+	.remove		= ltc4151_remove,
+	.id_table	= ltc4151_id,
+};
+
+static int __init ltc4151_init(void)
+{
+	return i2c_add_driver(&ltc4151_driver);
+}
+
+static void __exit ltc4151_exit(void)
+{
+	i2c_del_driver(&ltc4151_driver);
+}
+
+MODULE_AUTHOR("Per Dalen <per.dalen@appeartv.com>");
+MODULE_DESCRIPTION("LTC4151 driver");
+MODULE_LICENSE("GPL");
+
+module_init(ltc4151_init);
+module_exit(ltc4151_exit);

drivers/hwmon/max16064.c

@@ -0,0 +1,91 @@
+/*
+ * Hardware monitoring driver for Maxim MAX16064
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+static struct pmbus_driver_info max16064_info = {
+	.pages = 4,
+	.direct[PSC_VOLTAGE_IN] = true,
+	.direct[PSC_VOLTAGE_OUT] = true,
+	.direct[PSC_TEMPERATURE] = true,
+	.m[PSC_VOLTAGE_IN] = 19995,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = -1,
+	.m[PSC_VOLTAGE_OUT] = 19995,
+	.b[PSC_VOLTAGE_OUT] = 0,
+	.R[PSC_VOLTAGE_OUT] = -1,
+	.m[PSC_TEMPERATURE] = -7612,
+	.b[PSC_TEMPERATURE] = 335,
+	.R[PSC_TEMPERATURE] = -3,
+	.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP
+		| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP,
+	.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+	.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+	.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+};
+
+static int max16064_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	return pmbus_do_probe(client, id, &max16064_info);
+}
+
+static int max16064_remove(struct i2c_client *client)
+{
+	return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max16064_id[] = {
+	{"max16064", 0},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, max16064_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max16064_driver = {
+	.driver = {
+		   .name = "max16064",
+		   },
+	.probe = max16064_probe,
+	.remove = max16064_remove,
+	.id_table = max16064_id,
+};
+
+static int __init max16064_init(void)
+{
+	return i2c_add_driver(&max16064_driver);
+}
+
+static void __exit max16064_exit(void)
+{
+	i2c_del_driver(&max16064_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064");
+MODULE_LICENSE("GPL");
+module_init(max16064_init);
+module_exit(max16064_exit);

drivers/hwmon/max34440.c

@@ -0,0 +1,199 @@
+/*
+ * Hardware monitoring driver for Maxim MAX34440/MAX34441
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+enum chips { max34440, max34441 };
+
+#define MAX34440_STATUS_OC_WARN		(1 << 0)
+#define MAX34440_STATUS_OC_FAULT	(1 << 1)
+#define MAX34440_STATUS_OT_FAULT	(1 << 5)
+#define MAX34440_STATUS_OT_WARN		(1 << 6)
+
+static int max34440_get_status(struct i2c_client *client, int page, int reg)
+{
+	int ret;
+	int mfg_status;
+
+	ret = pmbus_set_page(client, page);
+	if (ret < 0)
+		return ret;
+
+	switch (reg) {
+	case PMBUS_STATUS_IOUT:
+		mfg_status = pmbus_read_word_data(client, 0,
+						  PMBUS_STATUS_MFR_SPECIFIC);
+		if (mfg_status < 0)
+			return mfg_status;
+		if (mfg_status & MAX34440_STATUS_OC_WARN)
+			ret |= PB_IOUT_OC_WARNING;
+		if (mfg_status & MAX34440_STATUS_OC_FAULT)
+			ret |= PB_IOUT_OC_FAULT;
+		break;
+	case PMBUS_STATUS_TEMPERATURE:
+		mfg_status = pmbus_read_word_data(client, 0,
+						  PMBUS_STATUS_MFR_SPECIFIC);
+		if (mfg_status < 0)
+			return mfg_status;
+		if (mfg_status & MAX34440_STATUS_OT_WARN)
+			ret |= PB_TEMP_OT_WARNING;
+		if (mfg_status & MAX34440_STATUS_OT_FAULT)
+			ret |= PB_TEMP_OT_FAULT;
+		break;
+	default:
+		ret = -ENODATA;
+		break;
+	}
+	return ret;
+}
+
+static struct pmbus_driver_info max34440_info[] = {
+	[max34440] = {
+		.pages = 14,
+		.direct[PSC_VOLTAGE_IN] = true,
+		.direct[PSC_VOLTAGE_OUT] = true,
+		.direct[PSC_TEMPERATURE] = true,
+		.direct[PSC_CURRENT_OUT] = true,
+		.m[PSC_VOLTAGE_IN] = 1,
+		.b[PSC_VOLTAGE_IN] = 0,
+		.R[PSC_VOLTAGE_IN] = 3,	    /* R = 0 in datasheet reflects mV */
+		.m[PSC_VOLTAGE_OUT] = 1,
+		.b[PSC_VOLTAGE_OUT] = 0,
+		.R[PSC_VOLTAGE_OUT] = 3,    /* R = 0 in datasheet reflects mV */
+		.m[PSC_CURRENT_OUT] = 1,
+		.b[PSC_CURRENT_OUT] = 0,
+		.R[PSC_CURRENT_OUT] = 3,    /* R = 0 in datasheet reflects mA */
+		.m[PSC_TEMPERATURE] = 1,
+		.b[PSC_TEMPERATURE] = 0,
+		.R[PSC_TEMPERATURE] = 2,
+		.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.get_status = max34440_get_status,
+	},
+	[max34441] = {
+		.pages = 12,
+		.direct[PSC_VOLTAGE_IN] = true,
+		.direct[PSC_VOLTAGE_OUT] = true,
+		.direct[PSC_TEMPERATURE] = true,
+		.direct[PSC_CURRENT_OUT] = true,
+		.direct[PSC_FAN] = true,
+		.m[PSC_VOLTAGE_IN] = 1,
+		.b[PSC_VOLTAGE_IN] = 0,
+		.R[PSC_VOLTAGE_IN] = 3,
+		.m[PSC_VOLTAGE_OUT] = 1,
+		.b[PSC_VOLTAGE_OUT] = 0,
+		.R[PSC_VOLTAGE_OUT] = 3,
+		.m[PSC_CURRENT_OUT] = 1,
+		.b[PSC_CURRENT_OUT] = 0,
+		.R[PSC_CURRENT_OUT] = 3,
+		.m[PSC_TEMPERATURE] = 1,
+		.b[PSC_TEMPERATURE] = 0,
+		.R[PSC_TEMPERATURE] = 2,
+		.m[PSC_FAN] = 1,
+		.b[PSC_FAN] = 0,
+		.R[PSC_FAN] = 0,
+		.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
+		  | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+		.func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
+		.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+		.get_status = max34440_get_status,
+	},
+};
+
+static int max34440_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
+}
+
+static int max34440_remove(struct i2c_client *client)
+{
+	return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max34440_id[] = {
+	{"max34440", max34440},
+	{"max34441", max34441},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, max34440_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max34440_driver = {
+	.driver = {
+		   .name = "max34440",
+		   },
+	.probe = max34440_probe,
+	.remove = max34440_remove,
+	.id_table = max34440_id,
+};
+
+static int __init max34440_init(void)
+{
+	return i2c_add_driver(&max34440_driver);
+}
+
+static void __exit max34440_exit(void)
+{
+	i2c_del_driver(&max34440_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
+MODULE_LICENSE("GPL");
+module_init(max34440_init);
+module_exit(max34440_exit);

drivers/hwmon/max6639.c

@@ -0,0 +1,653 @@
+/*
+ * max6639.c - Support for Maxim MAX6639
+ *
+ * 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller
+ *
+ * Copyright (C) 2010, 2011 Roland Stigge <stigge@antcom.de>
+ *
+ * based on the initial MAX6639 support from semptian.net
+ * by He Changqing <hechangqing@semptian.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.
+ */
+
+#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/err.h>
+#include <linux/mutex.h>
+#include <linux/i2c/max6639.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
+
+/* The MAX6639 registers, valid channel numbers: 0, 1 */
+#define MAX6639_REG_TEMP(ch)			(0x00 + (ch))
+#define MAX6639_REG_STATUS			0x02
+#define MAX6639_REG_OUTPUT_MASK			0x03
+#define MAX6639_REG_GCONFIG			0x04
+#define MAX6639_REG_TEMP_EXT(ch)		(0x05 + (ch))
+#define MAX6639_REG_ALERT_LIMIT(ch)		(0x08 + (ch))
+#define MAX6639_REG_OT_LIMIT(ch)		(0x0A + (ch))
+#define MAX6639_REG_THERM_LIMIT(ch)		(0x0C + (ch))
+#define MAX6639_REG_FAN_CONFIG1(ch)		(0x10 + (ch) * 4)
+#define MAX6639_REG_FAN_CONFIG2a(ch)		(0x11 + (ch) * 4)
+#define MAX6639_REG_FAN_CONFIG2b(ch)		(0x12 + (ch) * 4)
+#define MAX6639_REG_FAN_CONFIG3(ch)		(0x13 + (ch) * 4)
+#define MAX6639_REG_FAN_CNT(ch)			(0x20 + (ch))
+#define MAX6639_REG_TARGET_CNT(ch)		(0x22 + (ch))
+#define MAX6639_REG_FAN_PPR(ch)			(0x24 + (ch))
+#define MAX6639_REG_TARGTDUTY(ch)		(0x26 + (ch))
+#define MAX6639_REG_FAN_START_TEMP(ch)		(0x28 + (ch))
+#define MAX6639_REG_DEVID			0x3D
+#define MAX6639_REG_MANUID			0x3E
+#define MAX6639_REG_DEVREV			0x3F
+
+/* Register bits */
+#define MAX6639_GCONFIG_STANDBY			0x80
+#define MAX6639_GCONFIG_POR			0x40
+#define MAX6639_GCONFIG_DISABLE_TIMEOUT		0x20
+#define MAX6639_GCONFIG_CH2_LOCAL		0x10
+#define MAX6639_GCONFIG_PWM_FREQ_HI		0x08
+
+#define MAX6639_FAN_CONFIG1_PWM			0x80
+
+#define MAX6639_FAN_CONFIG3_THERM_FULL_SPEED	0x40
+
+static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 };
+
+#define FAN_FROM_REG(val, div, rpm_range)	((val) == 0 ? -1 : \
+	(val) == 255 ? 0 : (rpm_ranges[rpm_range] * 30) / ((div + 1) * (val)))
+#define TEMP_LIMIT_TO_REG(val)	SENSORS_LIMIT((val) / 1000, 0, 255)
+
+/*
+ * Client data (each client gets its own)
+ */
+struct max6639_data {
+	struct device *hwmon_dev;
+	struct mutex update_lock;
+	char valid;		/* !=0 if following fields are valid */
+	unsigned long last_updated;	/* In jiffies */
+
+	/* Register values sampled regularly */
+	u16 temp[2];		/* Temperature, in 1/8 C, 0..255 C */
+	bool temp_fault[2];	/* Detected temperature diode failure */
+	u8 fan[2];		/* Register value: TACH count for fans >=30 */
+	u8 status;		/* Detected channel alarms and fan failures */
+
+	/* Register values only written to */
+	u8 pwm[2];		/* Register value: Duty cycle 0..120 */
+	u8 temp_therm[2];	/* THERM Temperature, 0..255 C (->_max) */
+	u8 temp_alert[2];	/* ALERT Temperature, 0..255 C (->_crit) */
+	u8 temp_ot[2];		/* OT Temperature, 0..255 C (->_emergency) */
+
+	/* Register values initialized only once */
+	u8 ppr;			/* Pulses per rotation 0..3 for 1..4 ppr */
+	u8 rpm_range;		/* Index in above rpm_ranges table */
+};
+
+static struct max6639_data *max6639_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct max6639_data *ret = data;
+	int i;
+	int status_reg;
+
+	mutex_lock(&data->update_lock);
+
+	if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) {
+		int res;
+
+		dev_dbg(&client->dev, "Starting max6639 update\n");
+
+		status_reg = i2c_smbus_read_byte_data(client,
+						      MAX6639_REG_STATUS);
+		if (status_reg < 0) {
+			ret = ERR_PTR(status_reg);
+			goto abort;
+		}
+
+		data->status = status_reg;
+
+		for (i = 0; i < 2; i++) {
+			res = i2c_smbus_read_byte_data(client,
+					MAX6639_REG_FAN_CNT(i));
+			if (res < 0) {
+				ret = ERR_PTR(res);
+				goto abort;
+			}
+			data->fan[i] = res;
+
+			res = i2c_smbus_read_byte_data(client,
+					MAX6639_REG_TEMP_EXT(i));
+			if (res < 0) {
+				ret = ERR_PTR(res);
+				goto abort;
+			}
+			data->temp[i] = res >> 5;
+			data->temp_fault[i] = res & 0x01;
+
+			res = i2c_smbus_read_byte_data(client,
+					MAX6639_REG_TEMP(i));
+			if (res < 0) {
+				ret = ERR_PTR(res);
+				goto abort;
+			}
+			data->temp[i] |= res << 3;
+		}
+
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+abort:
+	mutex_unlock(&data->update_lock);
+
+	return ret;
+}
+
+static ssize_t show_temp_input(struct device *dev,
+			       struct device_attribute *dev_attr, char *buf)
+{
+	long temp;
+	struct max6639_data *data = max6639_update_device(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	temp = data->temp[attr->index] * 125;
+	return sprintf(buf, "%ld\n", temp);
+}
+
+static ssize_t show_temp_fault(struct device *dev,
+			       struct device_attribute *dev_attr, char *buf)
+{
+	struct max6639_data *data = max6639_update_device(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	return sprintf(buf, "%d\n", data->temp_fault[attr->index]);
+}
+
+static ssize_t show_temp_max(struct device *dev,
+			     struct device_attribute *dev_attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	return sprintf(buf, "%d\n", (data->temp_therm[attr->index] * 1000));
+}
+
+static ssize_t set_temp_max(struct device *dev,
+			    struct device_attribute *dev_attr,
+			    const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+	unsigned long val;
+	int res;
+
+	res = strict_strtoul(buf, 10, &val);
+	if (res)
+		return res;
+
+	mutex_lock(&data->update_lock);
+	data->temp_therm[attr->index] = TEMP_LIMIT_TO_REG(val);
+	i2c_smbus_write_byte_data(client,
+				  MAX6639_REG_THERM_LIMIT(attr->index),
+				  data->temp_therm[attr->index]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_temp_crit(struct device *dev,
+			      struct device_attribute *dev_attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	return sprintf(buf, "%d\n", (data->temp_alert[attr->index] * 1000));
+}
+
+static ssize_t set_temp_crit(struct device *dev,
+			     struct device_attribute *dev_attr,
+			     const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+	unsigned long val;
+	int res;
+
+	res = strict_strtoul(buf, 10, &val);
+	if (res)
+		return res;
+
+	mutex_lock(&data->update_lock);
+	data->temp_alert[attr->index] = TEMP_LIMIT_TO_REG(val);
+	i2c_smbus_write_byte_data(client,
+				  MAX6639_REG_ALERT_LIMIT(attr->index),
+				  data->temp_alert[attr->index]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_temp_emergency(struct device *dev,
+				   struct device_attribute *dev_attr,
+				   char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	return sprintf(buf, "%d\n", (data->temp_ot[attr->index] * 1000));
+}
+
+static ssize_t set_temp_emergency(struct device *dev,
+				  struct device_attribute *dev_attr,
+				  const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+	unsigned long val;
+	int res;
+
+	res = strict_strtoul(buf, 10, &val);
+	if (res)
+		return res;
+
+	mutex_lock(&data->update_lock);
+	data->temp_ot[attr->index] = TEMP_LIMIT_TO_REG(val);
+	i2c_smbus_write_byte_data(client,
+				  MAX6639_REG_OT_LIMIT(attr->index),
+				  data->temp_ot[attr->index]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_pwm(struct device *dev,
+			struct device_attribute *dev_attr, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	return sprintf(buf, "%d\n", data->pwm[attr->index] * 255 / 120);
+}
+
+static ssize_t set_pwm(struct device *dev,
+		       struct device_attribute *dev_attr,
+		       const char *buf, size_t count)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+	unsigned long val;
+	int res;
+
+	res = strict_strtoul(buf, 10, &val);
+	if (res)
+		return res;
+
+	val = SENSORS_LIMIT(val, 0, 255);
+
+	mutex_lock(&data->update_lock);
+	data->pwm[attr->index] = (u8)(val * 120 / 255);
+	i2c_smbus_write_byte_data(client,
+				  MAX6639_REG_TARGTDUTY(attr->index),
+				  data->pwm[attr->index]);
+	mutex_unlock(&data->update_lock);
+	return count;
+}
+
+static ssize_t show_fan_input(struct device *dev,
+			      struct device_attribute *dev_attr, char *buf)
+{
+	struct max6639_data *data = max6639_update_device(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index],
+		       data->ppr, data->rpm_range));
+}
+
+static ssize_t show_alarm(struct device *dev,
+			  struct device_attribute *dev_attr, char *buf)
+{
+	struct max6639_data *data = max6639_update_device(dev);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
+
+	if (IS_ERR(data))
+		return PTR_ERR(data);
+
+	return sprintf(buf, "%d\n", !!(data->status & (1 << attr->index)));
+}
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp_input, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_temp_fault, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max,
+		set_temp_max, 0);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp_max,
+		set_temp_max, 1);
+static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp_crit,
+		set_temp_crit, 0);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp_crit,
+		set_temp_crit, 1);
+static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO,
+		show_temp_emergency, set_temp_emergency, 0);
+static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO,
+		show_temp_emergency, set_temp_emergency, 1);
+static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO, show_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp2_emergency_alarm, S_IRUGO, show_alarm, NULL, 4);
+
+
+static struct attribute *max6639_attributes[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_fault.dev_attr.attr,
+	&sensor_dev_attr_temp2_fault.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit.dev_attr.attr,
+	&sensor_dev_attr_temp1_emergency.dev_attr.attr,
+	&sensor_dev_attr_temp2_emergency.dev_attr.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
+	&sensor_dev_attr_pwm2.dev_attr.attr,
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan1_fault.dev_attr.attr,
+	&sensor_dev_attr_fan2_fault.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group max6639_group = {
+	.attrs = max6639_attributes,
+};
+
+/*
+ *  returns respective index in rpm_ranges table
+ *  1 by default on invalid range
+ */
+static int rpm_range_to_reg(int range)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(rpm_ranges); i++) {
+		if (rpm_ranges[i] == range)
+			return i;
+	}
+
+	return 1; /* default: 4000 RPM */
+}
+
+static int max6639_init_client(struct i2c_client *client)
+{
+	struct max6639_data *data = i2c_get_clientdata(client);
+	struct max6639_platform_data *max6639_info =
+		client->dev.platform_data;
+	int i = 0;
+	int rpm_range = 1; /* default: 4000 RPM */
+	int err = 0;
+
+	/* Reset chip to default values, see below for GCONFIG setup */
+	err = i2c_smbus_write_byte_data(client, MAX6639_REG_GCONFIG,
+				  MAX6639_GCONFIG_POR);
+	if (err)
+		goto exit;
+
+	/* Fans pulse per revolution is 2 by default */
+	if (max6639_info && max6639_info->ppr > 0 &&
+			max6639_info->ppr < 5)
+		data->ppr = max6639_info->ppr;
+	else
+		data->ppr = 2;
+	data->ppr -= 1;
+	err = i2c_smbus_write_byte_data(client,
+			MAX6639_REG_FAN_PPR(i),
+			data->ppr << 5);
+	if (err)
+		goto exit;
+
+	if (max6639_info)
+		rpm_range = rpm_range_to_reg(max6639_info->rpm_range);
+	data->rpm_range = rpm_range;
+
+	for (i = 0; i < 2; i++) {
+
+		/* Fans config PWM, RPM */
+		err = i2c_smbus_write_byte_data(client,
+			MAX6639_REG_FAN_CONFIG1(i),
+			MAX6639_FAN_CONFIG1_PWM | rpm_range);
+		if (err)
+			goto exit;
+
+		/* Fans PWM polarity high by default */
+		if (max6639_info && max6639_info->pwm_polarity == 0)
+			err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_FAN_CONFIG2a(i), 0x00);
+		else
+			err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_FAN_CONFIG2a(i), 0x02);
+		if (err)
+			goto exit;
+
+		/*
+		 * /THERM full speed enable,
+		 * PWM frequency 25kHz, see also GCONFIG below
+		 */
+		err = i2c_smbus_write_byte_data(client,
+			MAX6639_REG_FAN_CONFIG3(i),
+			MAX6639_FAN_CONFIG3_THERM_FULL_SPEED | 0x03);
+		if (err)
+			goto exit;
+
+		/* Max. temp. 80C/90C/100C */
+		data->temp_therm[i] = 80;
+		data->temp_alert[i] = 90;
+		data->temp_ot[i] = 100;
+		err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_THERM_LIMIT(i),
+				data->temp_therm[i]);
+		if (err)
+			goto exit;
+		err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_ALERT_LIMIT(i),
+				data->temp_alert[i]);
+		if (err)
+			goto exit;
+		err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_OT_LIMIT(i), data->temp_ot[i]);
+		if (err)
+			goto exit;
+
+		/* PWM 120/120 (i.e. 100%) */
+		data->pwm[i] = 120;
+		err = i2c_smbus_write_byte_data(client,
+				MAX6639_REG_TARGTDUTY(i), data->pwm[i]);
+		if (err)
+			goto exit;
+	}
+	/* Start monitoring */
+	err = i2c_smbus_write_byte_data(client, MAX6639_REG_GCONFIG,
+		MAX6639_GCONFIG_DISABLE_TIMEOUT | MAX6639_GCONFIG_CH2_LOCAL |
+		MAX6639_GCONFIG_PWM_FREQ_HI);
+exit:
+	return err;
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int max6639_detect(struct i2c_client *client,
+			  struct i2c_board_info *info)
+{
+	struct i2c_adapter *adapter = client->adapter;
+	int dev_id, manu_id;
+
+	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+		return -ENODEV;
+
+	/* Actual detection via device and manufacturer ID */
+	dev_id = i2c_smbus_read_byte_data(client, MAX6639_REG_DEVID);
+	manu_id = i2c_smbus_read_byte_data(client, MAX6639_REG_MANUID);
+	if (dev_id != 0x58 || manu_id != 0x4D)
+		return -ENODEV;
+
+	strlcpy(info->type, "max6639", I2C_NAME_SIZE);
+
+	return 0;
+}
+
+static int max6639_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct max6639_data *data;
+	int err;
+
+	data = kzalloc(sizeof(struct max6639_data), GFP_KERNEL);
+	if (!data) {
+		err = -ENOMEM;
+		goto exit;
+	}
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+
+	/* Initialize the max6639 chip */
+	err = max6639_init_client(client);
+	if (err < 0)
+		goto error_free;
+
+	/* Register sysfs hooks */
+	err = sysfs_create_group(&client->dev.kobj, &max6639_group);
+	if (err)
+		goto error_free;
+
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		err = PTR_ERR(data->hwmon_dev);
+		goto error_remove;
+	}
+
+	dev_info(&client->dev, "temperature sensor and fan control found\n");
+
+	return 0;
+
+error_remove:
+	sysfs_remove_group(&client->dev.kobj, &max6639_group);
+error_free:
+	kfree(data);
+exit:
+	return err;
+}
+
+static int max6639_remove(struct i2c_client *client)
+{
+	struct max6639_data *data = i2c_get_clientdata(client);
+
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &max6639_group);
+
+	kfree(data);
+	return 0;
+}
+
+static int max6639_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+	int data = i2c_smbus_read_byte_data(client, MAX6639_REG_GCONFIG);
+	if (data < 0)
+		return data;
+
+	return i2c_smbus_write_byte_data(client,
+			MAX6639_REG_GCONFIG, data | MAX6639_GCONFIG_STANDBY);
+}
+
+static int max6639_resume(struct i2c_client *client)
+{
+	int data = i2c_smbus_read_byte_data(client, MAX6639_REG_GCONFIG);
+	if (data < 0)
+		return data;
+
+	return i2c_smbus_write_byte_data(client,
+			MAX6639_REG_GCONFIG, data & ~MAX6639_GCONFIG_STANDBY);
+}
+
+static const struct i2c_device_id max6639_id[] = {
+	{"max6639", 0},
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, max6639_id);
+
+static struct i2c_driver max6639_driver = {
+	.class = I2C_CLASS_HWMON,
+	.driver = {
+		   .name = "max6639",
+		   },
+	.probe = max6639_probe,
+	.remove = max6639_remove,
+	.suspend = max6639_suspend,
+	.resume = max6639_resume,
+	.id_table = max6639_id,
+	.detect = max6639_detect,
+	.address_list = normal_i2c,
+};
+
+static int __init max6639_init(void)
+{
+	return i2c_add_driver(&max6639_driver);
+}
+
+static void __exit max6639_exit(void)
+{
+	i2c_del_driver(&max6639_driver);
+}
+
+MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>");
+MODULE_DESCRIPTION("max6639 driver");
+MODULE_LICENSE("GPL");
+
+module_init(max6639_init);
+module_exit(max6639_exit);

drivers/hwmon/max8688.c

@@ -0,0 +1,158 @@
+/*
+ * Hardware monitoring driver for Maxim MAX8688
+ *
+ * Copyright (c) 2011 Ericsson AB.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+#define MAX8688_MFG_STATUS		0xd8
+
+#define MAX8688_STATUS_OC_FAULT		(1 << 4)
+#define MAX8688_STATUS_OV_FAULT		(1 << 5)
+#define MAX8688_STATUS_OV_WARNING	(1 << 8)
+#define MAX8688_STATUS_UV_FAULT		(1 << 9)
+#define MAX8688_STATUS_UV_WARNING	(1 << 10)
+#define MAX8688_STATUS_UC_FAULT		(1 << 11)
+#define MAX8688_STATUS_OC_WARNING	(1 << 12)
+#define MAX8688_STATUS_OT_FAULT		(1 << 13)
+#define MAX8688_STATUS_OT_WARNING	(1 << 14)
+
+static int max8688_get_status(struct i2c_client *client, int page, int reg)
+{
+	int ret = 0;
+	int mfg_status;
+
+	if (page)
+		return -EINVAL;
+
+	switch (reg) {
+	case PMBUS_STATUS_VOUT:
+		mfg_status = pmbus_read_word_data(client, 0,
+						  MAX8688_MFG_STATUS);
+		if (mfg_status < 0)
+			return mfg_status;
+		if (mfg_status & MAX8688_STATUS_UV_WARNING)
+			ret |= PB_VOLTAGE_UV_WARNING;
+		if (mfg_status & MAX8688_STATUS_UV_FAULT)
+			ret |= PB_VOLTAGE_UV_FAULT;
+		if (mfg_status & MAX8688_STATUS_OV_WARNING)
+			ret |= PB_VOLTAGE_OV_WARNING;
+		if (mfg_status & MAX8688_STATUS_OV_FAULT)
+			ret |= PB_VOLTAGE_OV_FAULT;
+		break;
+	case PMBUS_STATUS_IOUT:
+		mfg_status = pmbus_read_word_data(client, 0,
+						  MAX8688_MFG_STATUS);
+		if (mfg_status < 0)
+			return mfg_status;
+		if (mfg_status & MAX8688_STATUS_UC_FAULT)
+			ret |= PB_IOUT_UC_FAULT;
+		if (mfg_status & MAX8688_STATUS_OC_WARNING)
+			ret |= PB_IOUT_OC_WARNING;
+		if (mfg_status & MAX8688_STATUS_OC_FAULT)
+			ret |= PB_IOUT_OC_FAULT;
+		break;
+	case PMBUS_STATUS_TEMPERATURE:
+		mfg_status = pmbus_read_word_data(client, 0,
+						  MAX8688_MFG_STATUS);
+		if (mfg_status < 0)
+			return mfg_status;
+		if (mfg_status & MAX8688_STATUS_OT_WARNING)
+			ret |= PB_TEMP_OT_WARNING;
+		if (mfg_status & MAX8688_STATUS_OT_FAULT)
+			ret |= PB_TEMP_OT_FAULT;
+		break;
+	default:
+		ret = -ENODATA;
+		break;
+	}
+	return ret;
+}
+
+static struct pmbus_driver_info max8688_info = {
+	.pages = 1,
+	.direct[PSC_VOLTAGE_IN] = true,
+	.direct[PSC_VOLTAGE_OUT] = true,
+	.direct[PSC_TEMPERATURE] = true,
+	.direct[PSC_CURRENT_OUT] = true,
+	.m[PSC_VOLTAGE_IN] = 19995,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = -1,
+	.m[PSC_VOLTAGE_OUT] = 19995,
+	.b[PSC_VOLTAGE_OUT] = 0,
+	.R[PSC_VOLTAGE_OUT] = -1,
+	.m[PSC_CURRENT_OUT] = 23109,
+	.b[PSC_CURRENT_OUT] = 0,
+	.R[PSC_CURRENT_OUT] = -2,
+	.m[PSC_TEMPERATURE] = -7612,
+	.b[PSC_TEMPERATURE] = 335,
+	.R[PSC_TEMPERATURE] = -3,
+	.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_TEMP
+		| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT
+		| PMBUS_HAVE_STATUS_TEMP,
+	.get_status = max8688_get_status,
+};
+
+static int max8688_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	return pmbus_do_probe(client, id, &max8688_info);
+}
+
+static int max8688_remove(struct i2c_client *client)
+{
+	return pmbus_do_remove(client);
+}
+
+static const struct i2c_device_id max8688_id[] = {
+	{"max8688", 0},
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, max8688_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver max8688_driver = {
+	.driver = {
+		   .name = "max8688",
+		   },
+	.probe = max8688_probe,
+	.remove = max8688_remove,
+	.id_table = max8688_id,
+};
+
+static int __init max8688_init(void)
+{
+	return i2c_add_driver(&max8688_driver);
+}
+
+static void __exit max8688_exit(void)
+{
+	i2c_del_driver(&max8688_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX8688");
+MODULE_LICENSE("GPL");
+module_init(max8688_init);
+module_exit(max8688_exit);

drivers/hwmon/pmbus.c

@@ -0,0 +1,203 @@
+/*
+ * Hardware monitoring driver for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+/*
+ * Find sensor groups and status registers on each page.
+ */
+static void pmbus_find_sensor_groups(struct i2c_client *client,
+				     struct pmbus_driver_info *info)
+{
+	int page;
+
+	/* Sensors detected on page 0 only */
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_VIN))
+		info->func[0] |= PMBUS_HAVE_VIN;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_VCAP))
+		info->func[0] |= PMBUS_HAVE_VCAP;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_IIN))
+		info->func[0] |= PMBUS_HAVE_IIN;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_PIN))
+		info->func[0] |= PMBUS_HAVE_PIN;
+	if (info->func[0]
+	    && pmbus_check_byte_register(client, 0, PMBUS_STATUS_INPUT))
+		info->func[0] |= PMBUS_HAVE_STATUS_INPUT;
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_1)) {
+		info->func[0] |= PMBUS_HAVE_FAN12;
+		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_12))
+			info->func[0] |= PMBUS_HAVE_STATUS_FAN12;
+	}
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_FAN_SPEED_3)) {
+		info->func[0] |= PMBUS_HAVE_FAN34;
+		if (pmbus_check_byte_register(client, 0, PMBUS_STATUS_FAN_34))
+			info->func[0] |= PMBUS_HAVE_STATUS_FAN34;
+	}
+	if (pmbus_check_word_register(client, 0, PMBUS_READ_TEMPERATURE_1)) {
+		info->func[0] |= PMBUS_HAVE_TEMP;
+		if (pmbus_check_byte_register(client, 0,
+					      PMBUS_STATUS_TEMPERATURE))
+			info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
+	}
+
+	/* Sensors detected on all pages */
+	for (page = 0; page < info->pages; page++) {
+		if (pmbus_check_word_register(client, page, PMBUS_READ_VOUT)) {
+			info->func[page] |= PMBUS_HAVE_VOUT;
+			if (pmbus_check_byte_register(client, page,
+						      PMBUS_STATUS_VOUT))
+				info->func[page] |= PMBUS_HAVE_STATUS_VOUT;
+		}
+		if (pmbus_check_word_register(client, page, PMBUS_READ_IOUT)) {
+			info->func[page] |= PMBUS_HAVE_IOUT;
+			if (pmbus_check_byte_register(client, 0,
+						      PMBUS_STATUS_IOUT))
+				info->func[page] |= PMBUS_HAVE_STATUS_IOUT;
+		}
+		if (pmbus_check_word_register(client, page, PMBUS_READ_POUT))
+			info->func[page] |= PMBUS_HAVE_POUT;
+	}
+}
+
+/*
+ * Identify chip parameters.
+ */
+static int pmbus_identify(struct i2c_client *client,
+			  struct pmbus_driver_info *info)
+{
+	if (!info->pages) {
+		/*
+		 * Check if the PAGE command is supported. If it is,
+		 * keep setting the page number until it fails or until the
+		 * maximum number of pages has been reached. Assume that
+		 * this is the number of pages supported by the chip.
+		 */
+		if (pmbus_check_byte_register(client, 0, PMBUS_PAGE)) {
+			int page;
+
+			for (page = 1; page < PMBUS_PAGES; page++) {
+				if (pmbus_set_page(client, page) < 0)
+					break;
+			}
+			pmbus_set_page(client, 0);
+			info->pages = page;
+		} else {
+			info->pages = 1;
+		}
+	}
+
+	/*
+	 * We should check if the COEFFICIENTS register is supported.
+	 * If it is, and the chip is configured for direct mode, we can read
+	 * the coefficients from the chip, one set per group of sensor
+	 * registers.
+	 *
+	 * To do this, we will need access to a chip which actually supports the
+	 * COEFFICIENTS command, since the command is too complex to implement
+	 * without testing it.
+	 */
+
+	/* Try to find sensor groups  */
+	pmbus_find_sensor_groups(client, info);
+
+	return 0;
+}
+
+static int pmbus_probe(struct i2c_client *client,
+		       const struct i2c_device_id *id)
+{
+	struct pmbus_driver_info *info;
+	int ret;
+
+	info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	info->pages = id->driver_data;
+	info->identify = pmbus_identify;
+
+	ret = pmbus_do_probe(client, id, info);
+	if (ret < 0)
+		goto out;
+	return 0;
+
+out:
+	kfree(info);
+	return ret;
+}
+
+static int pmbus_remove(struct i2c_client *client)
+{
+	int ret;
+	const struct pmbus_driver_info *info;
+
+	info = pmbus_get_driver_info(client);
+	ret = pmbus_do_remove(client);
+	kfree(info);
+	return ret;
+}
+
+/*
+ * Use driver_data to set the number of pages supported by the chip.
+ */
+static const struct i2c_device_id pmbus_id[] = {
+	{"bmr450", 1},
+	{"bmr451", 1},
+	{"bmr453", 1},
+	{"bmr454", 1},
+	{"ltc2978", 8},
+	{"pmbus", 0},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, pmbus_id);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver pmbus_driver = {
+	.driver = {
+		   .name = "pmbus",
+		   },
+	.probe = pmbus_probe,
+	.remove = pmbus_remove,
+	.id_table = pmbus_id,
+};
+
+static int __init pmbus_init(void)
+{
+	return i2c_add_driver(&pmbus_driver);
+}
+
+static void __exit pmbus_exit(void)
+{
+	i2c_del_driver(&pmbus_driver);
+}
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("Generic PMBus driver");
+MODULE_LICENSE("GPL");
+module_init(pmbus_init);
+module_exit(pmbus_exit);

drivers/hwmon/pmbus.h

@@ -0,0 +1,313 @@
+/*
+ * pmbus.h - Common defines and structures for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * 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.
+ */
+
+#ifndef PMBUS_H
+#define PMBUS_H
+
+/*
+ * Registers
+ */
+#define PMBUS_PAGE			0x00
+#define PMBUS_OPERATION			0x01
+#define PMBUS_ON_OFF_CONFIG		0x02
+#define PMBUS_CLEAR_FAULTS		0x03
+#define PMBUS_PHASE			0x04
+
+#define PMBUS_CAPABILITY		0x19
+#define PMBUS_QUERY			0x1A
+
+#define PMBUS_VOUT_MODE			0x20
+#define PMBUS_VOUT_COMMAND		0x21
+#define PMBUS_VOUT_TRIM			0x22
+#define PMBUS_VOUT_CAL_OFFSET		0x23
+#define PMBUS_VOUT_MAX			0x24
+#define PMBUS_VOUT_MARGIN_HIGH		0x25
+#define PMBUS_VOUT_MARGIN_LOW		0x26
+#define PMBUS_VOUT_TRANSITION_RATE	0x27
+#define PMBUS_VOUT_DROOP		0x28
+#define PMBUS_VOUT_SCALE_LOOP		0x29
+#define PMBUS_VOUT_SCALE_MONITOR	0x2A
+
+#define PMBUS_COEFFICIENTS		0x30
+#define PMBUS_POUT_MAX			0x31
+
+#define PMBUS_FAN_CONFIG_12		0x3A
+#define PMBUS_FAN_COMMAND_1		0x3B
+#define PMBUS_FAN_COMMAND_2		0x3C
+#define PMBUS_FAN_CONFIG_34		0x3D
+#define PMBUS_FAN_COMMAND_3		0x3E
+#define PMBUS_FAN_COMMAND_4		0x3F
+
+#define PMBUS_VOUT_OV_FAULT_LIMIT	0x40
+#define PMBUS_VOUT_OV_FAULT_RESPONSE	0x41
+#define PMBUS_VOUT_OV_WARN_LIMIT	0x42
+#define PMBUS_VOUT_UV_WARN_LIMIT	0x43
+#define PMBUS_VOUT_UV_FAULT_LIMIT	0x44
+#define PMBUS_VOUT_UV_FAULT_RESPONSE	0x45
+#define PMBUS_IOUT_OC_FAULT_LIMIT	0x46
+#define PMBUS_IOUT_OC_FAULT_RESPONSE	0x47
+#define PMBUS_IOUT_OC_LV_FAULT_LIMIT	0x48
+#define PMBUS_IOUT_OC_LV_FAULT_RESPONSE	0x49
+#define PMBUS_IOUT_OC_WARN_LIMIT	0x4A
+#define PMBUS_IOUT_UC_FAULT_LIMIT	0x4B
+#define PMBUS_IOUT_UC_FAULT_RESPONSE	0x4C
+
+#define PMBUS_OT_FAULT_LIMIT		0x4F
+#define PMBUS_OT_FAULT_RESPONSE		0x50
+#define PMBUS_OT_WARN_LIMIT		0x51
+#define PMBUS_UT_WARN_LIMIT		0x52
+#define PMBUS_UT_FAULT_LIMIT		0x53
+#define PMBUS_UT_FAULT_RESPONSE		0x54
+#define PMBUS_VIN_OV_FAULT_LIMIT	0x55
+#define PMBUS_VIN_OV_FAULT_RESPONSE	0x56
+#define PMBUS_VIN_OV_WARN_LIMIT		0x57
+#define PMBUS_VIN_UV_WARN_LIMIT		0x58
+#define PMBUS_VIN_UV_FAULT_LIMIT	0x59
+
+#define PMBUS_IIN_OC_FAULT_LIMIT	0x5B
+#define PMBUS_IIN_OC_WARN_LIMIT		0x5D
+
+#define PMBUS_POUT_OP_FAULT_LIMIT	0x68
+#define PMBUS_POUT_OP_WARN_LIMIT	0x6A
+#define PMBUS_PIN_OP_WARN_LIMIT		0x6B
+
+#define PMBUS_STATUS_BYTE		0x78
+#define PMBUS_STATUS_WORD		0x79
+#define PMBUS_STATUS_VOUT		0x7A
+#define PMBUS_STATUS_IOUT		0x7B
+#define PMBUS_STATUS_INPUT		0x7C
+#define PMBUS_STATUS_TEMPERATURE	0x7D
+#define PMBUS_STATUS_CML		0x7E
+#define PMBUS_STATUS_OTHER		0x7F
+#define PMBUS_STATUS_MFR_SPECIFIC	0x80
+#define PMBUS_STATUS_FAN_12		0x81
+#define PMBUS_STATUS_FAN_34		0x82
+
+#define PMBUS_READ_VIN			0x88
+#define PMBUS_READ_IIN			0x89
+#define PMBUS_READ_VCAP			0x8A
+#define PMBUS_READ_VOUT			0x8B
+#define PMBUS_READ_IOUT			0x8C
+#define PMBUS_READ_TEMPERATURE_1	0x8D
+#define PMBUS_READ_TEMPERATURE_2	0x8E
+#define PMBUS_READ_TEMPERATURE_3	0x8F
+#define PMBUS_READ_FAN_SPEED_1		0x90
+#define PMBUS_READ_FAN_SPEED_2		0x91
+#define PMBUS_READ_FAN_SPEED_3		0x92
+#define PMBUS_READ_FAN_SPEED_4		0x93
+#define PMBUS_READ_DUTY_CYCLE		0x94
+#define PMBUS_READ_FREQUENCY		0x95
+#define PMBUS_READ_POUT			0x96
+#define PMBUS_READ_PIN			0x97
+
+#define PMBUS_REVISION			0x98
+#define PMBUS_MFR_ID			0x99
+#define PMBUS_MFR_MODEL			0x9A
+#define PMBUS_MFR_REVISION		0x9B
+#define PMBUS_MFR_LOCATION		0x9C
+#define PMBUS_MFR_DATE			0x9D
+#define PMBUS_MFR_SERIAL		0x9E
+
+/*
+ * CAPABILITY
+ */
+#define PB_CAPABILITY_SMBALERT		(1<<4)
+#define PB_CAPABILITY_ERROR_CHECK	(1<<7)
+
+/*
+ * VOUT_MODE
+ */
+#define PB_VOUT_MODE_MODE_MASK		0xe0
+#define PB_VOUT_MODE_PARAM_MASK		0x1f
+
+#define PB_VOUT_MODE_LINEAR		0x00
+#define PB_VOUT_MODE_VID		0x20
+#define PB_VOUT_MODE_DIRECT		0x40
+
+/*
+ * Fan configuration
+ */
+#define PB_FAN_2_PULSE_MASK		((1 << 0) | (1 << 1))
+#define PB_FAN_2_RPM			(1 << 2)
+#define PB_FAN_2_INSTALLED		(1 << 3)
+#define PB_FAN_1_PULSE_MASK		((1 << 4) | (1 << 5))
+#define PB_FAN_1_RPM			(1 << 6)
+#define PB_FAN_1_INSTALLED		(1 << 7)
+
+/*
+ * STATUS_BYTE, STATUS_WORD (lower)
+ */
+#define PB_STATUS_NONE_ABOVE		(1<<0)
+#define PB_STATUS_CML			(1<<1)
+#define PB_STATUS_TEMPERATURE		(1<<2)
+#define PB_STATUS_VIN_UV		(1<<3)
+#define PB_STATUS_IOUT_OC		(1<<4)
+#define PB_STATUS_VOUT_OV		(1<<5)
+#define PB_STATUS_OFF			(1<<6)
+#define PB_STATUS_BUSY			(1<<7)
+
+/*
+ * STATUS_WORD (upper)
+ */
+#define PB_STATUS_UNKNOWN		(1<<8)
+#define PB_STATUS_OTHER			(1<<9)
+#define PB_STATUS_FANS			(1<<10)
+#define PB_STATUS_POWER_GOOD_N		(1<<11)
+#define PB_STATUS_WORD_MFR		(1<<12)
+#define PB_STATUS_INPUT			(1<<13)
+#define PB_STATUS_IOUT_POUT		(1<<14)
+#define PB_STATUS_VOUT			(1<<15)
+
+/*
+ * STATUS_IOUT
+ */
+#define PB_POUT_OP_WARNING		(1<<0)
+#define PB_POUT_OP_FAULT		(1<<1)
+#define PB_POWER_LIMITING		(1<<2)
+#define PB_CURRENT_SHARE_FAULT		(1<<3)
+#define PB_IOUT_UC_FAULT		(1<<4)
+#define PB_IOUT_OC_WARNING		(1<<5)
+#define PB_IOUT_OC_LV_FAULT		(1<<6)
+#define PB_IOUT_OC_FAULT		(1<<7)
+
+/*
+ * STATUS_VOUT, STATUS_INPUT
+ */
+#define PB_VOLTAGE_UV_FAULT		(1<<4)
+#define PB_VOLTAGE_UV_WARNING		(1<<5)
+#define PB_VOLTAGE_OV_WARNING		(1<<6)
+#define PB_VOLTAGE_OV_FAULT		(1<<7)
+
+/*
+ * STATUS_INPUT
+ */
+#define PB_PIN_OP_WARNING		(1<<0)
+#define PB_IIN_OC_WARNING		(1<<1)
+#define PB_IIN_OC_FAULT			(1<<2)
+
+/*
+ * STATUS_TEMPERATURE
+ */
+#define PB_TEMP_UT_FAULT		(1<<4)
+#define PB_TEMP_UT_WARNING		(1<<5)
+#define PB_TEMP_OT_WARNING		(1<<6)
+#define PB_TEMP_OT_FAULT		(1<<7)
+
+/*
+ * STATUS_FAN
+ */
+#define PB_FAN_AIRFLOW_WARNING		(1<<0)
+#define PB_FAN_AIRFLOW_FAULT		(1<<1)
+#define PB_FAN_FAN2_SPEED_OVERRIDE	(1<<2)
+#define PB_FAN_FAN1_SPEED_OVERRIDE	(1<<3)
+#define PB_FAN_FAN2_WARNING		(1<<4)
+#define PB_FAN_FAN1_WARNING		(1<<5)
+#define PB_FAN_FAN2_FAULT		(1<<6)
+#define PB_FAN_FAN1_FAULT		(1<<7)
+
+/*
+ * CML_FAULT_STATUS
+ */
+#define PB_CML_FAULT_OTHER_MEM_LOGIC	(1<<0)
+#define PB_CML_FAULT_OTHER_COMM		(1<<1)
+#define PB_CML_FAULT_PROCESSOR		(1<<3)
+#define PB_CML_FAULT_MEMORY		(1<<4)
+#define PB_CML_FAULT_PACKET_ERROR	(1<<5)
+#define PB_CML_FAULT_INVALID_DATA	(1<<6)
+#define PB_CML_FAULT_INVALID_COMMAND	(1<<7)
+
+enum pmbus_sensor_classes {
+	PSC_VOLTAGE_IN = 0,
+	PSC_VOLTAGE_OUT,
+	PSC_CURRENT_IN,
+	PSC_CURRENT_OUT,
+	PSC_POWER,
+	PSC_TEMPERATURE,
+	PSC_FAN,
+	PSC_NUM_CLASSES		/* Number of power sensor classes */
+};
+
+#define PMBUS_PAGES	32	/* Per PMBus specification */
+
+/* Functionality bit mask */
+#define PMBUS_HAVE_VIN		(1 << 0)
+#define PMBUS_HAVE_VCAP		(1 << 1)
+#define PMBUS_HAVE_VOUT		(1 << 2)
+#define PMBUS_HAVE_IIN		(1 << 3)
+#define PMBUS_HAVE_IOUT		(1 << 4)
+#define PMBUS_HAVE_PIN		(1 << 5)
+#define PMBUS_HAVE_POUT		(1 << 6)
+#define PMBUS_HAVE_FAN12	(1 << 7)
+#define PMBUS_HAVE_FAN34	(1 << 8)
+#define PMBUS_HAVE_TEMP		(1 << 9)
+#define PMBUS_HAVE_TEMP2	(1 << 10)
+#define PMBUS_HAVE_TEMP3	(1 << 11)
+#define PMBUS_HAVE_STATUS_VOUT	(1 << 12)
+#define PMBUS_HAVE_STATUS_IOUT	(1 << 13)
+#define PMBUS_HAVE_STATUS_INPUT	(1 << 14)
+#define PMBUS_HAVE_STATUS_TEMP	(1 << 15)
+#define PMBUS_HAVE_STATUS_FAN12	(1 << 16)
+#define PMBUS_HAVE_STATUS_FAN34	(1 << 17)
+
+struct pmbus_driver_info {
+	int pages;		/* Total number of pages */
+	bool direct[PSC_NUM_CLASSES];
+				/* true if device uses direct data format
+				   for the given sensor class */
+	/*
+	 * Support one set of coefficients for each sensor type
+	 * Used for chips providing data in direct mode.
+	 */
+	int m[PSC_NUM_CLASSES];	/* mantissa for direct data format */
+	int b[PSC_NUM_CLASSES];	/* offset */
+	int R[PSC_NUM_CLASSES];	/* exponent */
+
+	u32 func[PMBUS_PAGES];	/* Functionality, per page */
+	/*
+	 * The get_status function maps manufacturing specific status values
+	 * into PMBus standard status values.
+	 * This function is optional and only necessary if chip specific status
+	 * register values have to be mapped into standard PMBus status register
+	 * values.
+	 */
+	int (*get_status)(struct i2c_client *client, int page, int reg);
+	/*
+	 * The identify function determines supported PMBus functionality.
+	 * This function is only necessary if a chip driver supports multiple
+	 * chips, and the chip functionality is not pre-determined.
+	 */
+	int (*identify)(struct i2c_client *client,
+			struct pmbus_driver_info *info);
+};
+
+/* Function declarations */
+
+int pmbus_set_page(struct i2c_client *client, u8 page);
+int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg);
+void pmbus_clear_faults(struct i2c_client *client);
+bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg);
+bool pmbus_check_word_register(struct i2c_client *client, int page, int reg);
+int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
+		   struct pmbus_driver_info *info);
+int pmbus_do_remove(struct i2c_client *client);
+const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client
+						      *client);
+
+#endif /* PMBUS_H */

drivers/hwmon/pmbus_core.c

@@ -0,0 +1,1658 @@
+/*
+ * Hardware monitoring driver for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/delay.h>
+#include <linux/i2c/pmbus.h>
+#include "pmbus.h"
+
+/*
+ * Constants needed to determine number of sensors, booleans, and labels.
+ */
+#define PMBUS_MAX_INPUT_SENSORS		11	/* 6*volt, 3*curr, 2*power */
+#define PMBUS_VOUT_SENSORS_PER_PAGE	5	/* input, min, max, lcrit,
+						   crit */
+#define PMBUS_IOUT_SENSORS_PER_PAGE	4	/* input, min, max, crit */
+#define PMBUS_POUT_SENSORS_PER_PAGE	4	/* input, cap, max, crit */
+#define PMBUS_MAX_SENSORS_PER_FAN	1	/* input */
+#define PMBUS_MAX_SENSORS_PER_TEMP	5	/* input, min, max, lcrit,
+						   crit */
+
+#define PMBUS_MAX_INPUT_BOOLEANS	7	/* v: min_alarm, max_alarm,
+						   lcrit_alarm, crit_alarm;
+						   c: alarm, crit_alarm;
+						   p: crit_alarm */
+#define PMBUS_VOUT_BOOLEANS_PER_PAGE	4	/* min_alarm, max_alarm,
+						   lcrit_alarm, crit_alarm */
+#define PMBUS_IOUT_BOOLEANS_PER_PAGE	3	/* alarm, lcrit_alarm,
+						   crit_alarm */
+#define PMBUS_POUT_BOOLEANS_PER_PAGE	2	/* alarm, crit_alarm */
+#define PMBUS_MAX_BOOLEANS_PER_FAN	2	/* alarm, fault */
+#define PMBUS_MAX_BOOLEANS_PER_TEMP	4	/* min_alarm, max_alarm,
+						   lcrit_alarm, crit_alarm */
+
+#define PMBUS_MAX_INPUT_LABELS		4	/* vin, vcap, iin, pin */
+
+/*
+ * status, status_vout, status_iout, status_fans, status_fan34, and status_temp
+ * are paged. status_input is unpaged.
+ */
+#define PB_NUM_STATUS_REG	(PMBUS_PAGES * 6 + 1)
+
+/*
+ * Index into status register array, per status register group
+ */
+#define PB_STATUS_BASE		0
+#define PB_STATUS_VOUT_BASE	(PB_STATUS_BASE + PMBUS_PAGES)
+#define PB_STATUS_IOUT_BASE	(PB_STATUS_VOUT_BASE + PMBUS_PAGES)
+#define PB_STATUS_FAN_BASE	(PB_STATUS_IOUT_BASE + PMBUS_PAGES)
+#define PB_STATUS_FAN34_BASE	(PB_STATUS_FAN_BASE + PMBUS_PAGES)
+#define PB_STATUS_INPUT_BASE	(PB_STATUS_FAN34_BASE + PMBUS_PAGES)
+#define PB_STATUS_TEMP_BASE	(PB_STATUS_INPUT_BASE + 1)
+
+struct pmbus_sensor {
+	char name[I2C_NAME_SIZE];	/* sysfs sensor name */
+	struct sensor_device_attribute attribute;
+	u8 page;		/* page number */
+	u8 reg;			/* register */
+	enum pmbus_sensor_classes class;	/* sensor class */
+	bool update;		/* runtime sensor update needed */
+	int data;		/* Sensor data.
+				   Negative if there was a read error */
+};
+
+struct pmbus_boolean {
+	char name[I2C_NAME_SIZE];	/* sysfs boolean name */
+	struct sensor_device_attribute attribute;
+};
+
+struct pmbus_label {
+	char name[I2C_NAME_SIZE];	/* sysfs label name */
+	struct sensor_device_attribute attribute;
+	char label[I2C_NAME_SIZE];	/* label */
+};
+
+struct pmbus_data {
+	struct device *hwmon_dev;
+
+	u32 flags;		/* from platform data */
+
+	int exponent;		/* linear mode: exponent for output voltages */
+
+	const struct pmbus_driver_info *info;
+
+	int max_attributes;
+	int num_attributes;
+	struct attribute **attributes;
+	struct attribute_group group;
+
+	/*
+	 * Sensors cover both sensor and limit registers.
+	 */
+	int max_sensors;
+	int num_sensors;
+	struct pmbus_sensor *sensors;
+	/*
+	 * Booleans are used for alarms.
+	 * Values are determined from status registers.
+	 */
+	int max_booleans;
+	int num_booleans;
+	struct pmbus_boolean *booleans;
+	/*
+	 * Labels are used to map generic names (e.g., "in1")
+	 * to PMBus specific names (e.g., "vin" or "vout1").
+	 */
+	int max_labels;
+	int num_labels;
+	struct pmbus_label *labels;
+
+	struct mutex update_lock;
+	bool valid;
+	unsigned long last_updated;	/* in jiffies */
+
+	/*
+	 * A single status register covers multiple attributes,
+	 * so we keep them all together.
+	 */
+	u8 status_bits;
+	u8 status[PB_NUM_STATUS_REG];
+
+	u8 currpage;
+};
+
+int pmbus_set_page(struct i2c_client *client, u8 page)
+{
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	int rv = 0;
+	int newpage;
+
+	if (page != data->currpage) {
+		rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page);
+		newpage = i2c_smbus_read_byte_data(client, PMBUS_PAGE);
+		if (newpage != page)
+			rv = -EINVAL;
+		else
+			data->currpage = page;
+	}
+	return rv;
+}
+EXPORT_SYMBOL_GPL(pmbus_set_page);
+
+static int pmbus_write_byte(struct i2c_client *client, u8 page, u8 value)
+{
+	int rv;
+
+	rv = pmbus_set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	return i2c_smbus_write_byte(client, value);
+}
+
+static int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg,
+				 u16 word)
+{
+	int rv;
+
+	rv = pmbus_set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	return i2c_smbus_write_word_data(client, reg, word);
+}
+
+int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg)
+{
+	int rv;
+
+	rv = pmbus_set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	return i2c_smbus_read_word_data(client, reg);
+}
+EXPORT_SYMBOL_GPL(pmbus_read_word_data);
+
+static int pmbus_read_byte_data(struct i2c_client *client, u8 page, u8 reg)
+{
+	int rv;
+
+	rv = pmbus_set_page(client, page);
+	if (rv < 0)
+		return rv;
+
+	return i2c_smbus_read_byte_data(client, reg);
+}
+
+static void pmbus_clear_fault_page(struct i2c_client *client, int page)
+{
+	pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS);
+}
+
+void pmbus_clear_faults(struct i2c_client *client)
+{
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	int i;
+
+	for (i = 0; i < data->info->pages; i++)
+		pmbus_clear_fault_page(client, i);
+}
+EXPORT_SYMBOL_GPL(pmbus_clear_faults);
+
+static int pmbus_check_status_cml(struct i2c_client *client, int page)
+{
+	int status, status2;
+
+	status = pmbus_read_byte_data(client, page, PMBUS_STATUS_BYTE);
+	if (status < 0 || (status & PB_STATUS_CML)) {
+		status2 = pmbus_read_byte_data(client, page, PMBUS_STATUS_CML);
+		if (status2 < 0 || (status2 & PB_CML_FAULT_INVALID_COMMAND))
+			return -EINVAL;
+	}
+	return 0;
+}
+
+bool pmbus_check_byte_register(struct i2c_client *client, int page, int reg)
+{
+	int rv;
+	struct pmbus_data *data = i2c_get_clientdata(client);
+
+	rv = pmbus_read_byte_data(client, page, reg);
+	if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
+		rv = pmbus_check_status_cml(client, page);
+	pmbus_clear_fault_page(client, page);
+	return rv >= 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_check_byte_register);
+
+bool pmbus_check_word_register(struct i2c_client *client, int page, int reg)
+{
+	int rv;
+	struct pmbus_data *data = i2c_get_clientdata(client);
+
+	rv = pmbus_read_word_data(client, page, reg);
+	if (rv >= 0 && !(data->flags & PMBUS_SKIP_STATUS_CHECK))
+		rv = pmbus_check_status_cml(client, page);
+	pmbus_clear_fault_page(client, page);
+	return rv >= 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_check_word_register);
+
+const struct pmbus_driver_info *pmbus_get_driver_info(struct i2c_client *client)
+{
+	struct pmbus_data *data = i2c_get_clientdata(client);
+
+	return data->info;
+}
+EXPORT_SYMBOL_GPL(pmbus_get_driver_info);
+
+static int pmbus_get_status(struct i2c_client *client, int page, int reg)
+{
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	const struct pmbus_driver_info *info = data->info;
+	int status;
+
+	if (info->get_status) {
+		status = info->get_status(client, page, reg);
+		if (status != -ENODATA)
+			return status;
+	}
+	return  pmbus_read_byte_data(client, page, reg);
+}
+
+static struct pmbus_data *pmbus_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	const struct pmbus_driver_info *info = data->info;
+
+	mutex_lock(&data->update_lock);
+	if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+		int i;
+
+		for (i = 0; i < info->pages; i++)
+			data->status[PB_STATUS_BASE + i]
+			    = pmbus_read_byte_data(client, i,
+						   PMBUS_STATUS_BYTE);
+		for (i = 0; i < info->pages; i++) {
+			if (!(info->func[i] & PMBUS_HAVE_STATUS_VOUT))
+				continue;
+			data->status[PB_STATUS_VOUT_BASE + i]
+			  = pmbus_get_status(client, i, PMBUS_STATUS_VOUT);
+		}
+		for (i = 0; i < info->pages; i++) {
+			if (!(info->func[i] & PMBUS_HAVE_STATUS_IOUT))
+				continue;
+			data->status[PB_STATUS_IOUT_BASE + i]
+			  = pmbus_get_status(client, i, PMBUS_STATUS_IOUT);
+		}
+		for (i = 0; i < info->pages; i++) {
+			if (!(info->func[i] & PMBUS_HAVE_STATUS_TEMP))
+				continue;
+			data->status[PB_STATUS_TEMP_BASE + i]
+			  = pmbus_get_status(client, i,
+					     PMBUS_STATUS_TEMPERATURE);
+		}
+		for (i = 0; i < info->pages; i++) {
+			if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN12))
+				continue;
+			data->status[PB_STATUS_FAN_BASE + i]
+			  = pmbus_get_status(client, i, PMBUS_STATUS_FAN_12);
+		}
+
+		for (i = 0; i < info->pages; i++) {
+			if (!(info->func[i] & PMBUS_HAVE_STATUS_FAN34))
+				continue;
+			data->status[PB_STATUS_FAN34_BASE + i]
+			  = pmbus_get_status(client, i, PMBUS_STATUS_FAN_34);
+		}
+
+		if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
+			data->status[PB_STATUS_INPUT_BASE]
+			  = pmbus_get_status(client, 0, PMBUS_STATUS_INPUT);
+
+		for (i = 0; i < data->num_sensors; i++) {
+			struct pmbus_sensor *sensor = &data->sensors[i];
+
+			if (!data->valid || sensor->update)
+				sensor->data
+				    = pmbus_read_word_data(client, sensor->page,
+							   sensor->reg);
+		}
+		pmbus_clear_faults(client);
+		data->last_updated = jiffies;
+		data->valid = 1;
+	}
+	mutex_unlock(&data->update_lock);
+	return data;
+}
+
+/*
+ * Convert linear sensor values to milli- or micro-units
+ * depending on sensor type.
+ */
+static int pmbus_reg2data_linear(struct pmbus_data *data,
+				 struct pmbus_sensor *sensor)
+{
+	s16 exponent;
+	s32 mantissa;
+	long val;
+
+	if (sensor->class == PSC_VOLTAGE_OUT) {	/* LINEAR16 */
+		exponent = data->exponent;
+		mantissa = (u16) sensor->data;
+	} else {				/* LINEAR11 */
+		exponent = (sensor->data >> 11) & 0x001f;
+		mantissa = sensor->data & 0x07ff;
+
+		if (exponent > 0x0f)
+			exponent |= 0xffe0;	/* sign extend exponent */
+		if (mantissa > 0x03ff)
+			mantissa |= 0xfffff800;	/* sign extend mantissa */
+	}
+
+	val = mantissa;
+
+	/* scale result to milli-units for all sensors except fans */
+	if (sensor->class != PSC_FAN)
+		val = val * 1000L;
+
+	/* scale result to micro-units for power sensors */
+	if (sensor->class == PSC_POWER)
+		val = val * 1000L;
+
+	if (exponent >= 0)
+		val <<= exponent;
+	else
+		val >>= -exponent;
+
+	return (int)val;
+}
+
+/*
+ * Convert direct sensor values to milli- or micro-units
+ * depending on sensor type.
+ */
+static int pmbus_reg2data_direct(struct pmbus_data *data,
+				 struct pmbus_sensor *sensor)
+{
+	long val = (s16) sensor->data;
+	long m, b, R;
+
+	m = data->info->m[sensor->class];
+	b = data->info->b[sensor->class];
+	R = data->info->R[sensor->class];
+
+	if (m == 0)
+		return 0;
+
+	/* X = 1/m * (Y * 10^-R - b) */
+	R = -R;
+	/* scale result to milli-units for everything but fans */
+	if (sensor->class != PSC_FAN) {
+		R += 3;
+		b *= 1000;
+	}
+
+	/* scale result to micro-units for power sensors */
+	if (sensor->class == PSC_POWER) {
+		R += 3;
+		b *= 1000;
+	}
+
+	while (R > 0) {
+		val *= 10;
+		R--;
+	}
+	while (R < 0) {
+		val = DIV_ROUND_CLOSEST(val, 10);
+		R++;
+	}
+
+	return (int)((val - b) / m);
+}
+
+static int pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
+{
+	int val;
+
+	if (data->info->direct[sensor->class])
+		val = pmbus_reg2data_direct(data, sensor);
+	else
+		val = pmbus_reg2data_linear(data, sensor);
+
+	return val;
+}
+
+#define MAX_MANTISSA	(1023 * 1000)
+#define MIN_MANTISSA	(511 * 1000)
+
+static u16 pmbus_data2reg_linear(struct pmbus_data *data,
+				 enum pmbus_sensor_classes class, long val)
+{
+	s16 exponent = 0, mantissa;
+	bool negative = false;
+
+	/* simple case */
+	if (val == 0)
+		return 0;
+
+	if (class == PSC_VOLTAGE_OUT) {
+		/* LINEAR16 does not support negative voltages */
+		if (val < 0)
+			return 0;
+
+		/*
+		 * For a static exponents, we don't have a choice
+		 * but to adjust the value to it.
+		 */
+		if (data->exponent < 0)
+			val <<= -data->exponent;
+		else
+			val >>= data->exponent;
+		val = DIV_ROUND_CLOSEST(val, 1000);
+		return val & 0xffff;
+	}
+
+	if (val < 0) {
+		negative = true;
+		val = -val;
+	}
+
+	/* Power is in uW. Convert to mW before converting. */
+	if (class == PSC_POWER)
+		val = DIV_ROUND_CLOSEST(val, 1000L);
+
+	/*
+	 * For simplicity, convert fan data to milli-units
+	 * before calculating the exponent.
+	 */
+	if (class == PSC_FAN)
+		val = val * 1000;
+
+	/* Reduce large mantissa until it fits into 10 bit */
+	while (val >= MAX_MANTISSA && exponent < 15) {
+		exponent++;
+		val >>= 1;
+	}
+	/* Increase small mantissa to improve precision */
+	while (val < MIN_MANTISSA && exponent > -15) {
+		exponent--;
+		val <<= 1;
+	}
+
+	/* Convert mantissa from milli-units to units */
+	mantissa = DIV_ROUND_CLOSEST(val, 1000);
+
+	/* Ensure that resulting number is within range */
+	if (mantissa > 0x3ff)
+		mantissa = 0x3ff;
+
+	/* restore sign */
+	if (negative)
+		mantissa = -mantissa;
+
+	/* Convert to 5 bit exponent, 11 bit mantissa */
+	return (mantissa & 0x7ff) | ((exponent << 11) & 0xf800);
+}
+
+static u16 pmbus_data2reg_direct(struct pmbus_data *data,
+				 enum pmbus_sensor_classes class, long val)
+{
+	long m, b, R;
+
+	m = data->info->m[class];
+	b = data->info->b[class];
+	R = data->info->R[class];
+
+	/* Power is in uW. Adjust R and b. */
+	if (class == PSC_POWER) {
+		R -= 3;
+		b *= 1000;
+	}
+
+	/* Calculate Y = (m * X + b) * 10^R */
+	if (class != PSC_FAN) {
+		R -= 3;		/* Adjust R and b for data in milli-units */
+		b *= 1000;
+	}
+	val = val * m + b;
+
+	while (R > 0) {
+		val *= 10;
+		R--;
+	}
+	while (R < 0) {
+		val = DIV_ROUND_CLOSEST(val, 10);
+		R++;
+	}
+
+	return val;
+}
+
+static u16 pmbus_data2reg(struct pmbus_data *data,
+			  enum pmbus_sensor_classes class, long val)
+{
+	u16 regval;
+
+	if (data->info->direct[class])
+		regval = pmbus_data2reg_direct(data, class, val);
+	else
+		regval = pmbus_data2reg_linear(data, class, val);
+
+	return regval;
+}
+
+/*
+ * Return boolean calculated from converted data.
+ * <index> defines a status register index and mask, and optionally
+ * two sensor indexes.
+ * The upper half-word references the two sensors,
+ * two sensor indices.
+ * The upper half-word references the two optional sensors,
+ * the lower half word references status register and mask.
+ * The function returns true if (status[reg] & mask) is true and,
+ * if specified, if v1 >= v2.
+ * To determine if an object exceeds upper limits, specify <v, limit>.
+ * To determine if an object exceeds lower limits, specify <limit, v>.
+ *
+ * For booleans created with pmbus_add_boolean_reg(), only the lower 16 bits of
+ * index are set. s1 and s2 (the sensor index values) are zero in this case.
+ * The function returns true if (status[reg] & mask) is true.
+ *
+ * If the boolean was created with pmbus_add_boolean_cmp(), a comparison against
+ * a specified limit has to be performed to determine the boolean result.
+ * In this case, the function returns true if v1 >= v2 (where v1 and v2 are
+ * sensor values referenced by sensor indices s1 and s2).
+ *
+ * To determine if an object exceeds upper limits, specify <s1,s2> = <v,limit>.
+ * To determine if an object exceeds lower limits, specify <s1,s2> = <limit,v>.
+ *
+ * If a negative value is stored in any of the referenced registers, this value
+ * reflects an error code which will be returned.
+ */
+static int pmbus_get_boolean(struct pmbus_data *data, int index, int *val)
+{
+	u8 s1 = (index >> 24) & 0xff;
+	u8 s2 = (index >> 16) & 0xff;
+	u8 reg = (index >> 8) & 0xff;
+	u8 mask = index & 0xff;
+	int status;
+	u8 regval;
+
+	status = data->status[reg];
+	if (status < 0)
+		return status;
+
+	regval = status & mask;
+	if (!s1 && !s2)
+		*val = !!regval;
+	else {
+		int v1, v2;
+		struct pmbus_sensor *sensor1, *sensor2;
+
+		sensor1 = &data->sensors[s1];
+		if (sensor1->data < 0)
+			return sensor1->data;
+		sensor2 = &data->sensors[s2];
+		if (sensor2->data < 0)
+			return sensor2->data;
+
+		v1 = pmbus_reg2data(data, sensor1);
+		v2 = pmbus_reg2data(data, sensor2);
+		*val = !!(regval && v1 >= v2);
+	}
+	return 0;
+}
+
+static ssize_t pmbus_show_boolean(struct device *dev,
+				  struct device_attribute *da, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct pmbus_data *data = pmbus_update_device(dev);
+	int val;
+	int err;
+
+	err = pmbus_get_boolean(data, attr->index, &val);
+	if (err)
+		return err;
+	return snprintf(buf, PAGE_SIZE, "%d\n", val);
+}
+
+static ssize_t pmbus_show_sensor(struct device *dev,
+				 struct device_attribute *da, char *buf)
+{
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+	struct pmbus_data *data = pmbus_update_device(dev);
+	struct pmbus_sensor *sensor;
+
+	sensor = &data->sensors[attr->index];
+	if (sensor->data < 0)
+		return sensor->data;
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", pmbus_reg2data(data, sensor));
+}
+
+static ssize_t pmbus_set_sensor(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 pmbus_data *data = i2c_get_clientdata(client);
+	struct pmbus_sensor *sensor = &data->sensors[attr->index];
+	ssize_t rv = count;
+	long val = 0;
+	int ret;
+	u16 regval;
+
+	if (strict_strtol(buf, 10, &val) < 0)
+		return -EINVAL;
+
+	mutex_lock(&data->update_lock);
+	regval = pmbus_data2reg(data, sensor->class, val);
+	ret = pmbus_write_word_data(client, sensor->page, sensor->reg, regval);
+	if (ret < 0)
+		rv = ret;
+	else
+		data->sensors[attr->index].data = regval;
+	mutex_unlock(&data->update_lock);
+	return rv;
+}
+
+static ssize_t pmbus_show_label(struct device *dev,
+				struct device_attribute *da, char *buf)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+
+	return snprintf(buf, PAGE_SIZE, "%s\n",
+			data->labels[attr->index].label);
+}
+
+#define PMBUS_ADD_ATTR(data, _name, _idx, _mode, _type, _show, _set)	\
+do {									\
+	struct sensor_device_attribute *a				\
+	    = &data->_type##s[data->num_##_type##s].attribute;		\
+	BUG_ON(data->num_attributes >= data->max_attributes);		\
+	a->dev_attr.attr.name = _name;					\
+	a->dev_attr.attr.mode = _mode;					\
+	a->dev_attr.show = _show;					\
+	a->dev_attr.store = _set;					\
+	a->index = _idx;						\
+	data->attributes[data->num_attributes] = &a->dev_attr.attr;	\
+	data->num_attributes++;						\
+} while (0)
+
+#define PMBUS_ADD_GET_ATTR(data, _name, _type, _idx)			\
+	PMBUS_ADD_ATTR(data, _name, _idx, S_IRUGO, _type,		\
+		       pmbus_show_##_type,  NULL)
+
+#define PMBUS_ADD_SET_ATTR(data, _name, _type, _idx)			\
+	PMBUS_ADD_ATTR(data, _name, _idx, S_IWUSR | S_IRUGO, _type,	\
+		       pmbus_show_##_type, pmbus_set_##_type)
+
+static void pmbus_add_boolean(struct pmbus_data *data,
+			      const char *name, const char *type, int seq,
+			      int idx)
+{
+	struct pmbus_boolean *boolean;
+
+	BUG_ON(data->num_booleans >= data->max_booleans);
+
+	boolean = &data->booleans[data->num_booleans];
+
+	snprintf(boolean->name, sizeof(boolean->name), "%s%d_%s",
+		 name, seq, type);
+	PMBUS_ADD_GET_ATTR(data, boolean->name, boolean, idx);
+	data->num_booleans++;
+}
+
+static void pmbus_add_boolean_reg(struct pmbus_data *data,
+				  const char *name, const char *type,
+				  int seq, int reg, int bit)
+{
+	pmbus_add_boolean(data, name, type, seq, (reg << 8) | bit);
+}
+
+static void pmbus_add_boolean_cmp(struct pmbus_data *data,
+				  const char *name, const char *type,
+				  int seq, int i1, int i2, int reg, int mask)
+{
+	pmbus_add_boolean(data, name, type, seq,
+			  (i1 << 24) | (i2 << 16) | (reg << 8) | mask);
+}
+
+static void pmbus_add_sensor(struct pmbus_data *data,
+			     const char *name, const char *type, int seq,
+			     int page, int reg, enum pmbus_sensor_classes class,
+			     bool update)
+{
+	struct pmbus_sensor *sensor;
+
+	BUG_ON(data->num_sensors >= data->max_sensors);
+
+	sensor = &data->sensors[data->num_sensors];
+	snprintf(sensor->name, sizeof(sensor->name), "%s%d_%s",
+		 name, seq, type);
+	sensor->page = page;
+	sensor->reg = reg;
+	sensor->class = class;
+	sensor->update = update;
+	if (update)
+		PMBUS_ADD_GET_ATTR(data, sensor->name, sensor,
+				   data->num_sensors);
+	else
+		PMBUS_ADD_SET_ATTR(data, sensor->name, sensor,
+				   data->num_sensors);
+	data->num_sensors++;
+}
+
+static void pmbus_add_label(struct pmbus_data *data,
+			    const char *name, int seq,
+			    const char *lstring, int index)
+{
+	struct pmbus_label *label;
+
+	BUG_ON(data->num_labels >= data->max_labels);
+
+	label = &data->labels[data->num_labels];
+	snprintf(label->name, sizeof(label->name), "%s%d_label", name, seq);
+	if (!index)
+		strncpy(label->label, lstring, sizeof(label->label) - 1);
+	else
+		snprintf(label->label, sizeof(label->label), "%s%d", lstring,
+			 index);
+
+	PMBUS_ADD_GET_ATTR(data, label->name, label, data->num_labels);
+	data->num_labels++;
+}
+
+static const int pmbus_temp_registers[] = {
+	PMBUS_READ_TEMPERATURE_1,
+	PMBUS_READ_TEMPERATURE_2,
+	PMBUS_READ_TEMPERATURE_3
+};
+
+static const int pmbus_temp_flags[] = {
+	PMBUS_HAVE_TEMP,
+	PMBUS_HAVE_TEMP2,
+	PMBUS_HAVE_TEMP3
+};
+
+static const int pmbus_fan_registers[] = {
+	PMBUS_READ_FAN_SPEED_1,
+	PMBUS_READ_FAN_SPEED_2,
+	PMBUS_READ_FAN_SPEED_3,
+	PMBUS_READ_FAN_SPEED_4
+};
+
+static const int pmbus_fan_config_registers[] = {
+	PMBUS_FAN_CONFIG_12,
+	PMBUS_FAN_CONFIG_12,
+	PMBUS_FAN_CONFIG_34,
+	PMBUS_FAN_CONFIG_34
+};
+
+static const int pmbus_fan_status_registers[] = {
+	PMBUS_STATUS_FAN_12,
+	PMBUS_STATUS_FAN_12,
+	PMBUS_STATUS_FAN_34,
+	PMBUS_STATUS_FAN_34
+};
+
+static const u32 pmbus_fan_flags[] = {
+	PMBUS_HAVE_FAN12,
+	PMBUS_HAVE_FAN12,
+	PMBUS_HAVE_FAN34,
+	PMBUS_HAVE_FAN34
+};
+
+static const u32 pmbus_fan_status_flags[] = {
+	PMBUS_HAVE_STATUS_FAN12,
+	PMBUS_HAVE_STATUS_FAN12,
+	PMBUS_HAVE_STATUS_FAN34,
+	PMBUS_HAVE_STATUS_FAN34
+};
+
+/*
+ * Determine maximum number of sensors, booleans, and labels.
+ * To keep things simple, only make a rough high estimate.
+ */
+static void pmbus_find_max_attr(struct i2c_client *client,
+				struct pmbus_data *data)
+{
+	const struct pmbus_driver_info *info = data->info;
+	int page, max_sensors, max_booleans, max_labels;
+
+	max_sensors = PMBUS_MAX_INPUT_SENSORS;
+	max_booleans = PMBUS_MAX_INPUT_BOOLEANS;
+	max_labels = PMBUS_MAX_INPUT_LABELS;
+
+	for (page = 0; page < info->pages; page++) {
+		if (info->func[page] & PMBUS_HAVE_VOUT) {
+			max_sensors += PMBUS_VOUT_SENSORS_PER_PAGE;
+			max_booleans += PMBUS_VOUT_BOOLEANS_PER_PAGE;
+			max_labels++;
+		}
+		if (info->func[page] & PMBUS_HAVE_IOUT) {
+			max_sensors += PMBUS_IOUT_SENSORS_PER_PAGE;
+			max_booleans += PMBUS_IOUT_BOOLEANS_PER_PAGE;
+			max_labels++;
+		}
+		if (info->func[page] & PMBUS_HAVE_POUT) {
+			max_sensors += PMBUS_POUT_SENSORS_PER_PAGE;
+			max_booleans += PMBUS_POUT_BOOLEANS_PER_PAGE;
+			max_labels++;
+		}
+		if (info->func[page] & PMBUS_HAVE_FAN12) {
+			max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
+			max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
+		}
+		if (info->func[page] & PMBUS_HAVE_FAN34) {
+			max_sensors += 2 * PMBUS_MAX_SENSORS_PER_FAN;
+			max_booleans += 2 * PMBUS_MAX_BOOLEANS_PER_FAN;
+		}
+		if (info->func[page] & PMBUS_HAVE_TEMP) {
+			max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+			max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+		}
+		if (info->func[page] & PMBUS_HAVE_TEMP2) {
+			max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+			max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+		}
+		if (info->func[page] & PMBUS_HAVE_TEMP3) {
+			max_sensors += PMBUS_MAX_SENSORS_PER_TEMP;
+			max_booleans += PMBUS_MAX_BOOLEANS_PER_TEMP;
+		}
+	}
+	data->max_sensors = max_sensors;
+	data->max_booleans = max_booleans;
+	data->max_labels = max_labels;
+	data->max_attributes = max_sensors + max_booleans + max_labels;
+}
+
+/*
+ * Search for attributes. Allocate sensors, booleans, and labels as needed.
+ */
+static void pmbus_find_attributes(struct i2c_client *client,
+				  struct pmbus_data *data)
+{
+	const struct pmbus_driver_info *info = data->info;
+	int page, i0, i1, in_index;
+
+	/*
+	 * Input voltage sensors
+	 */
+	in_index = 1;
+	if (info->func[0] & PMBUS_HAVE_VIN) {
+		bool have_alarm = false;
+
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "in", in_index, "vin", 0);
+		pmbus_add_sensor(data, "in", "input", in_index,
+				 0, PMBUS_READ_VIN, PSC_VOLTAGE_IN, true);
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_VIN_UV_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "min", in_index,
+					 0, PMBUS_VIN_UV_WARN_LIMIT,
+					 PSC_VOLTAGE_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT) {
+				pmbus_add_boolean_reg(data, "in", "min_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_VOLTAGE_UV_WARNING);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_VIN_UV_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "lcrit", in_index,
+					 0, PMBUS_VIN_UV_FAULT_LIMIT,
+					 PSC_VOLTAGE_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT) {
+				pmbus_add_boolean_reg(data, "in", "lcrit_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_VOLTAGE_UV_FAULT);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_VIN_OV_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "max", in_index,
+					 0, PMBUS_VIN_OV_WARN_LIMIT,
+					 PSC_VOLTAGE_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT) {
+				pmbus_add_boolean_reg(data, "in", "max_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_VOLTAGE_OV_WARNING);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_VIN_OV_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "crit", in_index,
+					 0, PMBUS_VIN_OV_FAULT_LIMIT,
+					 PSC_VOLTAGE_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT) {
+				pmbus_add_boolean_reg(data, "in", "crit_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_VOLTAGE_OV_FAULT);
+				have_alarm = true;
+			}
+		}
+		/*
+		 * Add generic alarm attribute only if there are no individual
+		 * attributes.
+		 */
+		if (!have_alarm)
+			pmbus_add_boolean_reg(data, "in", "alarm",
+					      in_index,
+					      PB_STATUS_BASE,
+					      PB_STATUS_VIN_UV);
+		in_index++;
+	}
+	if (info->func[0] & PMBUS_HAVE_VCAP) {
+		pmbus_add_label(data, "in", in_index, "vcap", 0);
+		pmbus_add_sensor(data, "in", "input", in_index, 0,
+				 PMBUS_READ_VCAP, PSC_VOLTAGE_IN, true);
+		in_index++;
+	}
+
+	/*
+	 * Output voltage sensors
+	 */
+	for (page = 0; page < info->pages; page++) {
+		bool have_alarm = false;
+
+		if (!(info->func[page] & PMBUS_HAVE_VOUT))
+			continue;
+
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "in", in_index, "vout", page + 1);
+		pmbus_add_sensor(data, "in", "input", in_index, page,
+				 PMBUS_READ_VOUT, PSC_VOLTAGE_OUT, true);
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_VOUT_UV_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "min", in_index, page,
+					 PMBUS_VOUT_UV_WARN_LIMIT,
+					 PSC_VOLTAGE_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_VOUT) {
+				pmbus_add_boolean_reg(data, "in", "min_alarm",
+						      in_index,
+						      PB_STATUS_VOUT_BASE +
+						      page,
+						      PB_VOLTAGE_UV_WARNING);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_VOUT_UV_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "lcrit", in_index, page,
+					 PMBUS_VOUT_UV_FAULT_LIMIT,
+					 PSC_VOLTAGE_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_VOUT) {
+				pmbus_add_boolean_reg(data, "in", "lcrit_alarm",
+						      in_index,
+						      PB_STATUS_VOUT_BASE +
+						      page,
+						      PB_VOLTAGE_UV_FAULT);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_VOUT_OV_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "max", in_index, page,
+					 PMBUS_VOUT_OV_WARN_LIMIT,
+					 PSC_VOLTAGE_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_VOUT) {
+				pmbus_add_boolean_reg(data, "in", "max_alarm",
+						      in_index,
+						      PB_STATUS_VOUT_BASE +
+						      page,
+						      PB_VOLTAGE_OV_WARNING);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_VOUT_OV_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "in", "crit", in_index, page,
+					 PMBUS_VOUT_OV_FAULT_LIMIT,
+					 PSC_VOLTAGE_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_VOUT) {
+				pmbus_add_boolean_reg(data, "in", "crit_alarm",
+						      in_index,
+						      PB_STATUS_VOUT_BASE +
+						      page,
+						      PB_VOLTAGE_OV_FAULT);
+				have_alarm = true;
+			}
+		}
+		/*
+		 * Add generic alarm attribute only if there are no individual
+		 * attributes.
+		 */
+		if (!have_alarm)
+			pmbus_add_boolean_reg(data, "in", "alarm",
+					      in_index,
+					      PB_STATUS_BASE + page,
+					      PB_STATUS_VOUT_OV);
+		in_index++;
+	}
+
+	/*
+	 * Current sensors
+	 */
+
+	/*
+	 * Input current sensors
+	 */
+	in_index = 1;
+	if (info->func[0] & PMBUS_HAVE_IIN) {
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "curr", in_index, "iin", 0);
+		pmbus_add_sensor(data, "curr", "input", in_index,
+				 0, PMBUS_READ_IIN, PSC_CURRENT_IN, true);
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_IIN_OC_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "curr", "max", in_index,
+					 0, PMBUS_IIN_OC_WARN_LIMIT,
+					 PSC_CURRENT_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT) {
+				pmbus_add_boolean_reg(data, "curr", "max_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_IIN_OC_WARNING);
+			}
+		}
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_IIN_OC_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "curr", "crit", in_index,
+					 0, PMBUS_IIN_OC_FAULT_LIMIT,
+					 PSC_CURRENT_IN, false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
+				pmbus_add_boolean_reg(data, "curr",
+						      "crit_alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_IIN_OC_FAULT);
+		}
+		in_index++;
+	}
+
+	/*
+	 * Output current sensors
+	 */
+	for (page = 0; page < info->pages; page++) {
+		bool have_alarm = false;
+
+		if (!(info->func[page] & PMBUS_HAVE_IOUT))
+			continue;
+
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "curr", in_index, "iout", page + 1);
+		pmbus_add_sensor(data, "curr", "input", in_index, page,
+				 PMBUS_READ_IOUT, PSC_CURRENT_OUT, true);
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_IOUT_OC_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "curr", "max", in_index, page,
+					 PMBUS_IOUT_OC_WARN_LIMIT,
+					 PSC_CURRENT_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_IOUT) {
+				pmbus_add_boolean_reg(data, "curr", "max_alarm",
+						      in_index,
+						      PB_STATUS_IOUT_BASE +
+						      page, PB_IOUT_OC_WARNING);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_IOUT_UC_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "curr", "lcrit", in_index, page,
+					 PMBUS_IOUT_UC_FAULT_LIMIT,
+					 PSC_CURRENT_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_IOUT) {
+				pmbus_add_boolean_reg(data, "curr",
+						      "lcrit_alarm",
+						      in_index,
+						      PB_STATUS_IOUT_BASE +
+						      page, PB_IOUT_UC_FAULT);
+				have_alarm = true;
+			}
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_IOUT_OC_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "curr", "crit", in_index, page,
+					 PMBUS_IOUT_OC_FAULT_LIMIT,
+					 PSC_CURRENT_OUT, false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_IOUT) {
+				pmbus_add_boolean_reg(data, "curr",
+						      "crit_alarm",
+						      in_index,
+						      PB_STATUS_IOUT_BASE +
+						      page, PB_IOUT_OC_FAULT);
+				have_alarm = true;
+			}
+		}
+		/*
+		 * Add generic alarm attribute only if there are no individual
+		 * attributes.
+		 */
+		if (!have_alarm)
+			pmbus_add_boolean_reg(data, "curr", "alarm",
+					      in_index,
+					      PB_STATUS_BASE + page,
+					      PB_STATUS_IOUT_OC);
+		in_index++;
+	}
+
+	/*
+	 * Power sensors
+	 */
+	/*
+	 * Input Power sensors
+	 */
+	in_index = 1;
+	if (info->func[0] & PMBUS_HAVE_PIN) {
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "power", in_index, "pin", 0);
+		pmbus_add_sensor(data, "power", "input", in_index,
+				 0, PMBUS_READ_PIN, PSC_POWER, true);
+		if (pmbus_check_word_register(client, 0,
+					      PMBUS_PIN_OP_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "power", "max", in_index,
+					 0, PMBUS_PIN_OP_WARN_LIMIT, PSC_POWER,
+					 false);
+			if (info->func[0] & PMBUS_HAVE_STATUS_INPUT)
+				pmbus_add_boolean_reg(data, "power",
+						      "alarm",
+						      in_index,
+						      PB_STATUS_INPUT_BASE,
+						      PB_PIN_OP_WARNING);
+		}
+		in_index++;
+	}
+
+	/*
+	 * Output Power sensors
+	 */
+	for (page = 0; page < info->pages; page++) {
+		bool need_alarm = false;
+
+		if (!(info->func[page] & PMBUS_HAVE_POUT))
+			continue;
+
+		i0 = data->num_sensors;
+		pmbus_add_label(data, "power", in_index, "pout", page + 1);
+		pmbus_add_sensor(data, "power", "input", in_index, page,
+				 PMBUS_READ_POUT, PSC_POWER, true);
+		/*
+		 * Per hwmon sysfs API, power_cap is to be used to limit output
+		 * power.
+		 * We have two registers related to maximum output power,
+		 * PMBUS_POUT_MAX and PMBUS_POUT_OP_WARN_LIMIT.
+		 * PMBUS_POUT_MAX matches the powerX_cap attribute definition.
+		 * There is no attribute in the API to match
+		 * PMBUS_POUT_OP_WARN_LIMIT. We use powerX_max for now.
+		 */
+		if (pmbus_check_word_register(client, page, PMBUS_POUT_MAX)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "power", "cap", in_index, page,
+					 PMBUS_POUT_MAX, PSC_POWER, false);
+			need_alarm = true;
+		}
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_POUT_OP_WARN_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "power", "max", in_index, page,
+					 PMBUS_POUT_OP_WARN_LIMIT, PSC_POWER,
+					 false);
+			need_alarm = true;
+		}
+		if (need_alarm && (info->func[page] & PMBUS_HAVE_STATUS_IOUT))
+			pmbus_add_boolean_reg(data, "power", "alarm",
+					      in_index,
+					      PB_STATUS_IOUT_BASE + page,
+					      PB_POUT_OP_WARNING
+					      | PB_POWER_LIMITING);
+
+		if (pmbus_check_word_register(client, page,
+					      PMBUS_POUT_OP_FAULT_LIMIT)) {
+			i1 = data->num_sensors;
+			pmbus_add_sensor(data, "power", "crit", in_index, page,
+					 PMBUS_POUT_OP_FAULT_LIMIT, PSC_POWER,
+					 false);
+			if (info->func[page] & PMBUS_HAVE_STATUS_IOUT)
+				pmbus_add_boolean_reg(data, "power",
+						      "crit_alarm",
+						      in_index,
+						      PB_STATUS_IOUT_BASE
+						      + page,
+						      PB_POUT_OP_FAULT);
+		}
+		in_index++;
+	}
+
+	/*
+	 * Temperature sensors
+	 */
+	in_index = 1;
+	for (page = 0; page < info->pages; page++) {
+		int t;
+
+		for (t = 0; t < ARRAY_SIZE(pmbus_temp_registers); t++) {
+			bool have_alarm = false;
+
+			/*
+			 * A PMBus chip may support any combination of
+			 * temperature registers on any page. So we can not
+			 * abort after a failure to detect a register, but have
+			 * to continue checking for all registers on all pages.
+			 */
+			if (!(info->func[page] & pmbus_temp_flags[t]))
+				continue;
+
+			if (!pmbus_check_word_register
+			    (client, page, pmbus_temp_registers[t]))
+				continue;
+
+			i0 = data->num_sensors;
+			pmbus_add_sensor(data, "temp", "input", in_index, page,
+					 pmbus_temp_registers[t],
+					 PSC_TEMPERATURE, true);
+
+			/*
+			 * PMBus provides only one status register for TEMP1-3.
+			 * Thus, we can not use the status register to determine
+			 * which of the three sensors actually caused an alarm.
+			 * Always compare current temperature against the limit
+			 * registers to determine alarm conditions for a
+			 * specific sensor.
+			 *
+			 * Since there is only one set of limit registers for
+			 * up to three temperature sensors, we need to update
+			 * all limit registers after the limit was changed for
+			 * one of the sensors. This ensures that correct limits
+			 * are reported for all temperature sensors.
+			 */
+			if (pmbus_check_word_register
+			    (client, page, PMBUS_UT_WARN_LIMIT)) {
+				i1 = data->num_sensors;
+				pmbus_add_sensor(data, "temp", "min", in_index,
+						 page, PMBUS_UT_WARN_LIMIT,
+						 PSC_TEMPERATURE, true);
+				if (info->func[page] & PMBUS_HAVE_STATUS_TEMP) {
+					pmbus_add_boolean_cmp(data, "temp",
+						"min_alarm", in_index, i1, i0,
+						PB_STATUS_TEMP_BASE + page,
+						PB_TEMP_UT_WARNING);
+					have_alarm = true;
+				}
+			}
+			if (pmbus_check_word_register(client, page,
+						      PMBUS_UT_FAULT_LIMIT)) {
+				i1 = data->num_sensors;
+				pmbus_add_sensor(data, "temp", "lcrit",
+						 in_index, page,
+						 PMBUS_UT_FAULT_LIMIT,
+						 PSC_TEMPERATURE, true);
+				if (info->func[page] & PMBUS_HAVE_STATUS_TEMP) {
+					pmbus_add_boolean_cmp(data, "temp",
+						"lcrit_alarm", in_index, i1, i0,
+						PB_STATUS_TEMP_BASE + page,
+						PB_TEMP_UT_FAULT);
+					have_alarm = true;
+				}
+			}
+			if (pmbus_check_word_register
+			    (client, page, PMBUS_OT_WARN_LIMIT)) {
+				i1 = data->num_sensors;
+				pmbus_add_sensor(data, "temp", "max", in_index,
+						 page, PMBUS_OT_WARN_LIMIT,
+						 PSC_TEMPERATURE, true);
+				if (info->func[page] & PMBUS_HAVE_STATUS_TEMP) {
+					pmbus_add_boolean_cmp(data, "temp",
+						"max_alarm", in_index, i0, i1,
+						PB_STATUS_TEMP_BASE + page,
+						PB_TEMP_OT_WARNING);
+					have_alarm = true;
+				}
+			}
+			if (pmbus_check_word_register(client, page,
+						      PMBUS_OT_FAULT_LIMIT)) {
+				i1 = data->num_sensors;
+				pmbus_add_sensor(data, "temp", "crit", in_index,
+						 page, PMBUS_OT_FAULT_LIMIT,
+						 PSC_TEMPERATURE, true);
+				if (info->func[page] & PMBUS_HAVE_STATUS_TEMP) {
+					pmbus_add_boolean_cmp(data, "temp",
+						"crit_alarm", in_index, i0, i1,
+						PB_STATUS_TEMP_BASE + page,
+						PB_TEMP_OT_FAULT);
+					have_alarm = true;
+				}
+			}
+			/*
+			 * Last resort - we were not able to create any alarm
+			 * registers. Report alarm for all sensors using the
+			 * status register temperature alarm bit.
+			 */
+			if (!have_alarm)
+				pmbus_add_boolean_reg(data, "temp", "alarm",
+						      in_index,
+						      PB_STATUS_BASE + page,
+						      PB_STATUS_TEMPERATURE);
+			in_index++;
+		}
+	}
+
+	/*
+	 * Fans
+	 */
+	in_index = 1;
+	for (page = 0; page < info->pages; page++) {
+		int f;
+
+		for (f = 0; f < ARRAY_SIZE(pmbus_fan_registers); f++) {
+			int regval;
+
+			if (!(info->func[page] & pmbus_fan_flags[f]))
+				break;
+
+			if (!pmbus_check_word_register(client, page,
+						       pmbus_fan_registers[f])
+			    || !pmbus_check_byte_register(client, page,
+						pmbus_fan_config_registers[f]))
+				break;
+
+			/*
+			 * Skip fan if not installed.
+			 * Each fan configuration register covers multiple fans,
+			 * so we have to do some magic.
+			 */
+			regval = pmbus_read_byte_data(client, page,
+				pmbus_fan_config_registers[f]);
+			if (regval < 0 ||
+			    (!(regval & (PB_FAN_1_INSTALLED >> ((f & 1) * 4)))))
+				continue;
+
+			i0 = data->num_sensors;
+			pmbus_add_sensor(data, "fan", "input", in_index, page,
+					 pmbus_fan_registers[f], PSC_FAN, true);
+
+			/*
+			 * Each fan status register covers multiple fans,
+			 * so we have to do some magic.
+			 */
+			if ((info->func[page] & pmbus_fan_status_flags[f]) &&
+			    pmbus_check_byte_register(client,
+					page, pmbus_fan_status_registers[f])) {
+				int base;
+
+				if (f > 1)	/* fan 3, 4 */
+					base = PB_STATUS_FAN34_BASE + page;
+				else
+					base = PB_STATUS_FAN_BASE + page;
+				pmbus_add_boolean_reg(data, "fan", "alarm",
+					in_index, base,
+					PB_FAN_FAN1_WARNING >> (f & 1));
+				pmbus_add_boolean_reg(data, "fan", "fault",
+					in_index, base,
+					PB_FAN_FAN1_FAULT >> (f & 1));
+			}
+			in_index++;
+		}
+	}
+}
+
+/*
+ * Identify chip parameters.
+ * This function is called for all chips.
+ */
+static int pmbus_identify_common(struct i2c_client *client,
+				 struct pmbus_data *data)
+{
+	int vout_mode = -1, exponent;
+
+	if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE))
+		vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
+	if (vout_mode >= 0 && vout_mode != 0xff) {
+		/*
+		 * Not all chips support the VOUT_MODE command,
+		 * so a failure to read it is not an error.
+		 */
+		switch (vout_mode >> 5) {
+		case 0:	/* linear mode      */
+			if (data->info->direct[PSC_VOLTAGE_OUT])
+				return -ENODEV;
+
+			exponent = vout_mode & 0x1f;
+			/* and sign-extend it */
+			if (exponent & 0x10)
+				exponent |= ~0x1f;
+			data->exponent = exponent;
+			break;
+		case 2:	/* direct mode      */
+			if (!data->info->direct[PSC_VOLTAGE_OUT])
+				return -ENODEV;
+			break;
+		default:
+			return -ENODEV;
+		}
+	}
+
+	/* Determine maximum number of sensors, booleans, and labels */
+	pmbus_find_max_attr(client, data);
+	pmbus_clear_fault_page(client, 0);
+	return 0;
+}
+
+int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
+		   struct pmbus_driver_info *info)
+{
+	const struct pmbus_platform_data *pdata = client->dev.platform_data;
+	struct pmbus_data *data;
+	int ret;
+
+	if (!info) {
+		dev_err(&client->dev, "Missing chip information");
+		return -ENODEV;
+	}
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WRITE_BYTE
+				     | I2C_FUNC_SMBUS_BYTE_DATA
+				     | I2C_FUNC_SMBUS_WORD_DATA))
+		return -ENODEV;
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data) {
+		dev_err(&client->dev, "No memory to allocate driver data\n");
+		return -ENOMEM;
+	}
+
+	i2c_set_clientdata(client, data);
+	mutex_init(&data->update_lock);
+
+	/*
+	 * Bail out if status register or PMBus revision register
+	 * does not exist.
+	 */
+	if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0
+	    || i2c_smbus_read_byte_data(client, PMBUS_REVISION) < 0) {
+		dev_err(&client->dev,
+			"Status or revision register not found\n");
+		ret = -ENODEV;
+		goto out_data;
+	}
+
+	if (pdata)
+		data->flags = pdata->flags;
+	data->info = info;
+
+	pmbus_clear_faults(client);
+
+	if (info->identify) {
+		ret = (*info->identify)(client, info);
+		if (ret < 0) {
+			dev_err(&client->dev, "Chip identification failed\n");
+			goto out_data;
+		}
+	}
+
+	if (info->pages <= 0 || info->pages > PMBUS_PAGES) {
+		dev_err(&client->dev, "Bad number of PMBus pages: %d\n",
+			info->pages);
+		ret = -EINVAL;
+		goto out_data;
+	}
+	/*
+	 * Bail out if more than one page was configured, but we can not
+	 * select the highest page. This is an indication that the wrong
+	 * chip type was selected. Better bail out now than keep
+	 * returning errors later on.
+	 */
+	if (info->pages > 1 && pmbus_set_page(client, info->pages - 1) < 0) {
+		dev_err(&client->dev, "Failed to select page %d\n",
+			info->pages - 1);
+		ret = -EINVAL;
+		goto out_data;
+	}
+
+	ret = pmbus_identify_common(client, data);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to identify chip capabilities\n");
+		goto out_data;
+	}
+
+	ret = -ENOMEM;
+	data->sensors = kzalloc(sizeof(struct pmbus_sensor) * data->max_sensors,
+				GFP_KERNEL);
+	if (!data->sensors) {
+		dev_err(&client->dev, "No memory to allocate sensor data\n");
+		goto out_data;
+	}
+
+	data->booleans = kzalloc(sizeof(struct pmbus_boolean)
+				 * data->max_booleans, GFP_KERNEL);
+	if (!data->booleans) {
+		dev_err(&client->dev, "No memory to allocate boolean data\n");
+		goto out_sensors;
+	}
+
+	data->labels = kzalloc(sizeof(struct pmbus_label) * data->max_labels,
+			       GFP_KERNEL);
+	if (!data->labels) {
+		dev_err(&client->dev, "No memory to allocate label data\n");
+		goto out_booleans;
+	}
+
+	data->attributes = kzalloc(sizeof(struct attribute *)
+				   * data->max_attributes, GFP_KERNEL);
+	if (!data->attributes) {
+		dev_err(&client->dev, "No memory to allocate attribute data\n");
+		goto out_labels;
+	}
+
+	pmbus_find_attributes(client, data);
+
+	/*
+	 * If there are no attributes, something is wrong.
+	 * Bail out instead of trying to register nothing.
+	 */
+	if (!data->num_attributes) {
+		dev_err(&client->dev, "No attributes found\n");
+		ret = -ENODEV;
+		goto out_attributes;
+	}
+
+	/* Register sysfs hooks */
+	data->group.attrs = data->attributes;
+	ret = sysfs_create_group(&client->dev.kobj, &data->group);
+	if (ret) {
+		dev_err(&client->dev, "Failed to create sysfs entries\n");
+		goto out_attributes;
+	}
+	data->hwmon_dev = hwmon_device_register(&client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		ret = PTR_ERR(data->hwmon_dev);
+		dev_err(&client->dev, "Failed to register hwmon device\n");
+		goto out_hwmon_device_register;
+	}
+	return 0;
+
+out_hwmon_device_register:
+	sysfs_remove_group(&client->dev.kobj, &data->group);
+out_attributes:
+	kfree(data->attributes);
+out_labels:
+	kfree(data->labels);
+out_booleans:
+	kfree(data->booleans);
+out_sensors:
+	kfree(data->sensors);
+out_data:
+	kfree(data);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(pmbus_do_probe);
+
+int pmbus_do_remove(struct i2c_client *client)
+{
+	struct pmbus_data *data = i2c_get_clientdata(client);
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &data->group);
+	kfree(data->attributes);
+	kfree(data->labels);
+	kfree(data->booleans);
+	kfree(data->sensors);
+	kfree(data);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(pmbus_do_remove);
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus core driver");
+MODULE_LICENSE("GPL");

include/linux/i2c/max6639.h

@@ -0,0 +1,14 @@
+#ifndef _LINUX_MAX6639_H
+#define _LINUX_MAX6639_H
+
+#include <linux/types.h>
+
+/* platform data for the MAX6639 temperature sensor and fan control */
+
+struct max6639_platform_data {
+	bool pwm_polarity;	/* Polarity low (0) or high (1, default) */
+	int ppr;		/* Pulses per rotation 1..4 (default == 2) */
+	int rpm_range;		/* 2000, 4000 (default), 8000 or 16000 */
+};
+
+#endif /* _LINUX_MAX6639_H */

include/linux/i2c/pmbus.h

@@ -0,0 +1,45 @@
+/*
+ * Hardware monitoring driver for PMBus devices
+ *
+ * Copyright (c) 2010, 2011 Ericsson AB.
+ *
+ * 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.
+ */
+
+#ifndef _PMBUS_H_
+#define _PMBUS_H_
+
+/* flags */
+
+/*
+ * PMBUS_SKIP_STATUS_CHECK
+ *
+ * During register detection, skip checking the status register for
+ * communication or command errors.
+ *
+ * Some PMBus chips respond with valid data when trying to read an unsupported
+ * register. For such chips, checking the status register is mandatory when
+ * trying to determine if a chip register exists or not.
+ * Other PMBus chips don't support the STATUS_CML register, or report
+ * communication errors for no explicable reason. For such chips, checking
+ * the status register must be disabled.
+ */
+#define PMBUS_SKIP_STATUS_CHECK	(1 << 0)
+
+struct pmbus_platform_data {
+	u32 flags;		/* Device specific flags */
+};
+
+#endif /* _PMBUS_H_ */