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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-01 13:51:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-01 13:51:48 -0700
commit26f31fb936042459d481557a83bda7a3f4d61906 (patch)
tree1d871ee1c82896355ad0aef6eea8dbd601d8169d
parent0c8cfbade0e9bef5637907ed00c7b81bc86ad359 (diff)
parentf76992b00a4111fc4679b0b2d49fe75f05c2b04d (diff)
downloadlinux-26f31fb936042459d481557a83bda7a3f4d61906.tar.bz2
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck: - New drivers for ADC128D818, LTC2945, LTC4260, and LTC4222 - Added support for LTM4676 to ltc2978 driver - Converted several drivers to use devm_hwmon_device_register_with_groups - Various cleanup in several drivers * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (36 commits) hwmon: (pmbus/ltc2978) Add support for LTM4676 hwmon: (pmbus/ltc2978) Add new chip ID for LTC2974 hwmon: Do not accept invalid name attributes hwmon: (max6639) Use SIMPLE_DEV_PM_OPS macro hwmon: (lm95245) Make temp2_crit_hyst read-only hwmon: (lm95245) Convert to use devm_hwmon_device_register_with_groups hwmon: (lm95245) Drop useless debug message hwmon: (lm95245) Fix hysteresis temperatures hwmon: (max6639) Convert to use devm_hwmon_device_register_with_groups hwmon: (max6639) Introduce local dev variable, and reduce noisiness hwmon: (max6650) Introduce local 'dev' variable hwmon: (max6650) Drop error message after memory allocation failures hwmon: (max6650) Convert to use devm_hwmon_device_register_with_groups hwmon: (max6650) Rearrange code to no longer require forward declarations hwmon: (ltc4215) Convert to devm_hwmon_device_register_with_groups hwmon: (coretemp) Convert to use devm_hwmon_device_register_with_groups hwmon: (coretemp) Allocate platform data with devm_kzalloc hwmon: (coretemp) Use sysfs_create_group to create sysfs attributes hwmon: (ltc4245) Remove devicetree conditionals hwmon: (ltc4245) Drop debug messages ...
Diffstat
-rw-r--r--Documentation/hwmon/adc128d81847
-rw-r--r--Documentation/hwmon/lm952458
-rw-r--r--Documentation/hwmon/ltc294584
-rw-r--r--Documentation/hwmon/ltc297817
-rw-r--r--Documentation/hwmon/ltc426056
-rw-r--r--drivers/hwmon/Kconfig600
-rw-r--r--drivers/hwmon/Makefile4
-rw-r--r--drivers/hwmon/adc128d818.c491
-rw-r--r--drivers/hwmon/coretemp.c71
-rw-r--r--drivers/hwmon/emc2103.c2
-rw-r--r--drivers/hwmon/hwmon.c5
-rw-r--r--drivers/hwmon/iio_hwmon.c37
-rw-r--r--drivers/hwmon/jz4740-hwmon.c25
-rw-r--r--drivers/hwmon/lm95241.c93
-rw-r--r--drivers/hwmon/lm95245.c112
-rw-r--r--drivers/hwmon/ltc2945.c519
-rw-r--r--drivers/hwmon/ltc4215.c51
-rw-r--r--drivers/hwmon/ltc4222.c237
-rw-r--r--drivers/hwmon/ltc4245.c30
-rw-r--r--drivers/hwmon/ltc4260.c200
-rw-r--r--drivers/hwmon/max1668.c81
-rw-r--r--drivers/hwmon/max6639.c91
-rw-r--r--drivers/hwmon/max6650.c257
-rw-r--r--drivers/hwmon/pmbus/ltc2978.c25
-rw-r--r--drivers/hwmon/smm665.c2
25 files changed, 2292 insertions, 853 deletions
diff --git a/Documentation/hwmon/adc128d818 b/Documentation/hwmon/adc128d818
new file mode 100644
index 000000000000..39c95004dabc
--- /dev/null
+++ b/Documentation/hwmon/adc128d818
@@ -0,0 +1,47 @@
+Kernel driver adc128d818
+========================
+
+Supported chips:
+ * Texas Instruments ADC818D818
+ Prefix: 'adc818d818'
+ Addresses scanned: I2C 0x1d, 0x1e, 0x1f, 0x2d, 0x2e, 0x2f
+ Datasheet: Publicly available at the TI website
+ http://www.ti.com/
+
+Author: Guenter Roeck
+
+Description
+-----------
+
+This driver implements support for the Texas Instruments ADC128D818.
+It is described as 'ADC System Monitor with Temperature Sensor'.
+
+The ADC128D818 implements one temperature sensor and seven voltage sensors.
+
+Temperatures are measured in degrees Celsius. There is one set of limits.
+When the HOT Temperature Limit is crossed, this will cause an alarm that will
+be reasserted until the temperature drops below the HOT Hysteresis.
+Measurements are guaranteed between -55 and +125 degrees. The temperature
+measurement has a resolution of 0.5 degrees; the limits have a resolution
+of 1 degree.
+
+Voltage sensors (also known as IN sensors) report their values in volts.
+An alarm is triggered if the voltage has crossed a programmable minimum
+or maximum limit. Note that minimum in this case always means 'closest to
+zero'; this is important for negative voltage measurements. All voltage
+inputs can measure voltages between 0 and 2.55 volts, with a resolution
+of 0.625 mV.
+
+If an alarm triggers, it will remain triggered until the hardware register
+is read at least once. This means that the cause for the alarm may
+already have disappeared by the time the alarm is read. The driver
+caches the alarm status for each sensor until it is at least reported
+once, to ensure that alarms are reported to user space.
+
+The ADC128D818 only updates its values approximately once per second;
+reading it more often will do no harm, but will return 'old' values.
+
+In addition to the scanned address list, the chip can also be configured for
+addresses 0x35 to 0x37. Those addresses are not scanned. You have to instantiate
+the driver explicitly if the chip is configured for any of those addresses in
+your system.
diff --git a/Documentation/hwmon/lm95245 b/Documentation/hwmon/lm95245
index cbd8aeab7124..77eaf2812d25 100644
--- a/Documentation/hwmon/lm95245
+++ b/Documentation/hwmon/lm95245
@@ -24,8 +24,12 @@ is given within a range of -127 to +127.875 degrees. Remote temperatures are
given within a range of -127 to +255 degrees. Resolution depends on
temperature input and range.
-Each sensor has its own critical limit, but the hysteresis is common to all
-two channels.
+Each sensor has its own critical limit. Additionally, there is a relative
+hysteresis value common to both critical limits. To make life easier to
+user-space applications, two absolute values are exported, one for each
+channel, but these values are of course linked. Only the local hysteresis
+can be set from user-space, and the same delta applies to the remote
+hysteresis.
The lm95245 driver can change its update interval to a fixed set of values.
It will round up to the next selectable interval. See the datasheet for exact
diff --git a/Documentation/hwmon/ltc2945 b/Documentation/hwmon/ltc2945
new file mode 100644
index 000000000000..f8d0f7f19adb
--- /dev/null
+++ b/Documentation/hwmon/ltc2945
@@ -0,0 +1,84 @@
+Kernel driver ltc2945
+=====================
+
+Supported chips:
+ * Linear Technology LTC2945
+ Prefix: 'ltc2945'
+ Addresses scanned: -
+ Datasheet:
+ http://cds.linear.com/docs/en/datasheet/2945fa.pdf
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+The LTC2945 is a rail-to-rail system monitor that measures current, voltage,
+and power consumption.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for LTC2945 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 LTC2945 at address 0x10
+on I2C bus #1:
+$ modprobe ltc2945
+$ echo ltc2945 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Sysfs entries
+-------------
+
+Voltage readings provided by this driver are reported as obtained from the ADC
+registers. If a set of voltage divider resistors is installed, calculate the
+real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the
+value of the divider resistor against the measured voltage and R2 is the value
+of the divider resistor against Ground.
+
+Current reading provided by this driver is reported as obtained from the ADC
+Current Sense register. The reported value assumes that a 1 mOhm sense resistor
+is installed. If a different sense resistor is installed, calculate the real
+current by dividing the reported value by the sense resistor value in mOhm.
+
+in1_input VIN voltage (mV). Voltage is measured either at
+ SENSE+ or VDD pin depending on chip configuration.
+in1_min Undervoltage threshold
+in1_max Overvoltage threshold
+in1_lowest Lowest measured voltage
+in1_highest Highest measured voltage
+in1_reset_history Write 1 to reset in1 history
+in1_min_alarm Undervoltage alarm
+in1_max_alarm Overvoltage alarm
+
+in2_input ADIN voltage (mV)
+in2_min Undervoltage threshold
+in2_max Overvoltage threshold
+in2_lowest Lowest measured voltage
+in2_highest Highest measured voltage
+in2_reset_history Write 1 to reset in2 history
+in2_min_alarm Undervoltage alarm
+in2_max_alarm Overvoltage alarm
+
+curr1_input SENSE current (mA)
+curr1_min Undercurrent threshold
+curr1_max Overcurrent threshold
+curr1_lowest Lowest measured current
+curr1_highest Highest measured current
+curr1_reset_history Write 1 to reset curr1 history
+curr1_min_alarm Undercurrent alarm
+curr1_max_alarm Overcurrent alarm
+
+power1_input Power (in uW). Power is calculated based on SENSE+/VDD
+ voltage or ADIN voltage depending on chip configuration.
+power1_min Low lower threshold
+power1_max High power threshold
+power1_input_lowest Historical minimum power use
+power1_input_highest Historical maximum power use
+power1_reset_history Write 1 to reset power1 history
+power1_min_alarm Low power alarm
+power1_max_alarm High power alarm
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index a0546fc42273..686c078bb0e0 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -23,6 +23,10 @@ Supported chips:
Prefix: 'ltc3883'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc3883
+ * Linear Technology LTM4676
+ Prefix: 'ltm4676'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltm4676
Author: Guenter Roeck <linux@roeck-us.net>
@@ -33,7 +37,8 @@ Description
LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply
monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is a dual
output poly-phase step-down DC/DC controller. LTC3883 is a single phase
-step-down DC/DC controller.
+step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule
+regulator.
Usage Notes
@@ -75,7 +80,7 @@ in[N]_label "vout[1-8]".
LTC2974: N=2-5
LTC2977: N=2-9
LTC2978: N=2-9
- LTC3880: N=2-3
+ LTC3880, LTM4676: N=2-3
LTC3883: N=2
in[N]_input Measured output voltage.
in[N]_min Minimum output voltage.
@@ -95,7 +100,7 @@ temp[N]_input Measured temperature.
and temp5 reports the chip temperature.
On LTC2977 and LTC2978, only one temperature measurement
is supported and reports the chip temperature.
- On LTC3880, temp1 and temp2 report external
+ On LTC3880 and LTM4676, temp1 and temp2 report external
temperatures, and temp3 reports the chip temperature.
On LTC3883, temp1 reports an external temperature,
and temp2 reports the chip temperature.
@@ -123,11 +128,11 @@ power[N]_label "pout[1-4]".
LTC2974: N=1-4
LTC2977: Not supported
LTC2978: Not supported
- LTC3880: N=1-2
+ LTC3880, LTM4676: N=1-2
LTC3883: N=2
power[N]_input Measured output power.
-curr1_label "iin". LTC3880 and LTC3883 only.
+curr1_label "iin". LTC3880, LTC3883, and LTM4676 only.
curr1_input Measured input current.
curr1_max Maximum input current.
curr1_max_alarm Input current high alarm.
@@ -138,7 +143,7 @@ curr[N]_label "iout[1-4]".
LTC2974: N=1-4
LTC2977: not supported
LTC2978: not supported
- LTC3880: N=2-3
+ LTC3880, LTM4676: N=2-3
LTC3883: N=2
curr[N]_input Measured output current.
curr[N]_max Maximum output current.
diff --git a/Documentation/hwmon/ltc4260 b/Documentation/hwmon/ltc4260
new file mode 100644
index 000000000000..c4ff4ad998b2
--- /dev/null
+++ b/Documentation/hwmon/ltc4260
@@ -0,0 +1,56 @@
+Kernel driver ltc4260
+=====================
+
+Supported chips:
+ * Linear Technology LTC4260
+ Prefix: 'ltc4260'
+ Addresses scanned: -
+ Datasheet:
+ http://cds.linear.com/docs/en/datasheet/4260fc.pdf
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+The LTC4260 Hot Swap controller allows a board to be safely inserted
+and removed from a live backplane.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for LTC4260 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 LTC4260 at address 0x10
+on I2C bus #1:
+$ modprobe ltc4260
+$ echo ltc4260 0x10 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Sysfs entries
+-------------
+
+Voltage readings provided by this driver are reported as obtained from the ADC
+registers. If a set of voltage divider resistors is installed, calculate the
+real voltage by multiplying the reported value with (R1+R2)/R2, where R1 is the
+value of the divider resistor against the measured voltage and R2 is the value
+of the divider resistor against Ground.
+
+Current reading provided by this driver is reported as obtained from the ADC
+Current Sense register. The reported value assumes that a 1 mOhm sense resistor
+is installed. If a different sense resistor is installed, calculate the real
+current by dividing the reported value by the sense resistor value in mOhm.
+
+in1_input SOURCE voltage (mV)
+in1_min_alarm Undervoltage alarm
+in1_max_alarm Overvoltage alarm
+
+in2_input ADIN voltage (mV)
+in2_alarm Power bad alarm
+
+curr1_input SENSE current (mA)
+curr1_alarm SENSE overcurrent alarm
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 5ce43d8dfa98..f288b60a87be 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -111,22 +111,6 @@ config SENSORS_AD7418
This driver can also be built as a module. If so, the module
will be called ad7418.
-config SENSORS_ADCXX
- tristate "National Semiconductor ADCxxxSxxx"
- depends on SPI_MASTER
- help
- If you say yes here you get support for the National Semiconductor
- ADC<bb><c>S<sss> chip family, where
- * bb is the resolution in number of bits (8, 10, 12)
- * c is the number of channels (1, 2, 4, 8)
- * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500
- kSPS and 101 for 1 MSPS)
-
- Examples : ADC081S101, ADC124S501, ...
-
- This driver can also be built as a module. If so, the module
- will be called adcxx.
-
config SENSORS_ADM1021
tristate "Analog Devices ADM1021 and compatibles"
depends on I2C
@@ -312,6 +296,31 @@ config SENSORS_FAM15H_POWER
This driver can also be built as a module. If so, the module
will be called fam15h_power.
+config SENSORS_APPLESMC
+ tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)"
+ depends on INPUT && X86
+ select NEW_LEDS
+ select LEDS_CLASS
+ select INPUT_POLLDEV
+ default n
+ help
+ This driver provides support for the Apple System Management
+ Controller, which provides an accelerometer (Apple Sudden Motion
+ Sensor), light sensors, temperature sensors, keyboard backlight
+ control and fan control.
+
+ Only Intel-based Apple's computers are supported (MacBook Pro,
+ MacBook, MacMini).
+
+ Data from the different sensors, keyboard backlight control and fan
+ control are accessible via sysfs.
+
+ This driver also provides an absolute input class device, allowing
+ the laptop to act as a pinball machine-esque joystick.
+
+ Say Y here if you have an applicable laptop and want to experience
+ the awesome power of applesmc.
+
config SENSORS_ASB100
tristate "Asus ASB100 Bach"
depends on X86 && I2C
@@ -435,6 +444,12 @@ config SENSORS_F75375S
This driver can also be built as a module. If so, the module
will be called f75375s.
+config SENSORS_MC13783_ADC
+ tristate "Freescale MC13783/MC13892 ADC"
+ depends on MFD_MC13XXX
+ help
+ Support for the A/D converter on MC13783 and MC13892 PMIC.
+
config SENSORS_FSCHMD
tristate "Fujitsu Siemens Computers sensor chips"
depends on X86 && I2C
@@ -451,26 +466,6 @@ config SENSORS_FSCHMD
This driver can also be built as a module. If so, the module
will be called fschmd.
-config SENSORS_G760A
- tristate "GMT G760A"
- depends on I2C
- help
- If you say yes here you get support for Global Mixed-mode
- Technology Inc G760A fan speed PWM controller chips.
-
- This driver can also be built as a module. If so, the module
- will be called g760a.
-
-config SENSORS_G762
- tristate "GMT G762 and G763"
- depends on I2C
- help
- If you say yes here you get support for Global Mixed-mode
- Technology Inc G762 and G763 fan speed PWM controller chips.
-
- This driver can also be built as a module. If so, the module
- will be called g762.
-
config SENSORS_GL518SM
tristate "Genesys Logic GL518SM"
depends on I2C
@@ -492,6 +487,26 @@ config SENSORS_GL520SM
This driver can also be built as a module. If so, the module
will be called gl520sm.
+config SENSORS_G760A
+ tristate "GMT G760A"
+ depends on I2C
+ help
+ If you say yes here you get support for Global Mixed-mode
+ Technology Inc G760A fan speed PWM controller chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called g760a.
+
+config SENSORS_G762
+ tristate "GMT G762 and G763"
+ depends on I2C
+ help
+ If you say yes here you get support for Global Mixed-mode
+ Technology Inc G762 and G763 fan speed PWM controller chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called g762.
+
config SENSORS_GPIO_FAN
tristate "GPIO fan"
depends on GPIOLIB
@@ -511,24 +526,6 @@ config SENSORS_HIH6130
This driver can also be built as a module. If so, the module
will be called hih6130.
-config SENSORS_HTU21
- tristate "Measurement Specialties HTU21D humidity/temperature sensors"
- depends on I2C
- help
- If you say yes here you get support for the Measurement Specialties
- HTU21D humidity and temperature sensors.
-
- This driver can also be built as a module. If so, the module
- will be called htu21.
-
-config SENSORS_CORETEMP
- tristate "Intel Core/Core2/Atom temperature sensor"
- depends on X86
- help
- If you say yes here you get support for the temperature
- sensor inside your CPU. Most of the family 6 CPUs
- are supported. Check Documentation/hwmon/coretemp for details.
-
config SENSORS_IBMAEM
tristate "IBM Active Energy Manager temperature/power sensors and control"
select IPMI_SI
@@ -566,6 +563,14 @@ config SENSORS_IIO_HWMON
for those channels specified in the map. This map can be provided
either via platform data or the device tree bindings.
+config SENSORS_CORETEMP
+ tristate "Intel Core/Core2/Atom temperature sensor"
+ depends on X86
+ help
+ If you say yes here you get support for the temperature
+ sensor inside your CPU. Most of the family 6 CPUs
+ are supported. Check Documentation/hwmon/coretemp for details.
+
config SENSORS_IT87
tristate "ITE IT87xx and compatibles"
depends on !PPC
@@ -614,6 +619,219 @@ config SENSORS_LINEAGE
This driver can also be built as a module. If so, the module
will be called lineage-pem.
+config SENSORS_LTC2945
+ tristate "Linear Technology LTC2945"
+ depends on I2C
+ select REGMAP_I2C
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC2945
+ I2C System Monitor.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc2945.
+
+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
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC4215
+ Hot Swap Controller I2C interface.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc4215.
+
+config SENSORS_LTC4222
+ tristate "Linear Technology LTC4222"
+ depends on I2C
+ select REGMAP_I2C
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC4222
+ Dual Hot Swap Controller I2C interface.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc4222.
+
+config SENSORS_LTC4245
+ tristate "Linear Technology LTC4245"
+ depends on I2C
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC4245
+ Multiple Supply Hot Swap Controller I2C interface.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc4245.
+
+config SENSORS_LTC4260
+ tristate "Linear Technology LTC4260"
+ depends on I2C
+ select REGMAP_I2C
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC4260
+ Positive Voltage Hot Swap Controller I2C interface.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc4260.
+
+config SENSORS_LTC4261
+ tristate "Linear Technology LTC4261"
+ depends on I2C
+ default n
+ help
+ If you say yes here you get support for Linear Technology LTC4261
+ Negative Voltage Hot Swap Controller I2C interface.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc4261.
+
+config SENSORS_MAX1111
+ tristate "Maxim MAX1111 Serial 8-bit ADC chip and compatibles"
+ depends on SPI_MASTER
+ help
+ Say y here to support Maxim's MAX1110, MAX1111, MAX1112, and MAX1113
+ ADC chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called max1111.
+
+config SENSORS_MAX16065
+ tristate "Maxim MAX16065 System Manager and compatibles"
+ depends on I2C
+ help
+ If you say yes here you get support for hardware monitoring
+ capabilities of the following Maxim System Manager chips.
+ MAX16065
+ MAX16066
+ MAX16067
+ MAX16068
+ MAX16070
+ MAX16071
+
+ This driver can also be built as a module. If so, the module
+ will be called max16065.
+
+config SENSORS_MAX1619
+ tristate "Maxim MAX1619 sensor chip"
+ depends on I2C
+ help
+ If you say yes here you get support for MAX1619 sensor chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called max1619.
+
+config SENSORS_MAX1668
+ tristate "Maxim MAX1668 and compatibles"
+ depends on I2C
+ help
+ If you say yes here you get support for MAX1668, MAX1989 and
+ MAX1805 chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called max1668.
+
+config SENSORS_MAX197
+ tristate "Maxim MAX197 and compatibles"
+ help
+ Support for the Maxim MAX197 A/D converter.
+ Support will include, but not be limited to, MAX197, and MAX199.
+
+ This driver can also be built as a module. If so, the module
+ will be called max197.
+
+config SENSORS_MAX6639
+ tristate "Maxim MAX6639 sensor chip"
+ depends on I2C
+ 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_MAX6642
+ tristate "Maxim MAX6642 sensor chip"
+ depends on I2C
+ help
+ If you say yes here you get support for MAX6642 sensor chip.
+ MAX6642 is a SMBus-Compatible Remote/Local Temperature Sensor
+ with Overtemperature Alarm from Maxim.
+
+ This driver can also be built as a module. If so, the module
+ will be called max6642.
+
+config SENSORS_MAX6650
+ tristate "Maxim MAX6650 sensor chip"
+ depends on I2C
+ help
+ If you say yes here you get support for the MAX6650 / MAX6651
+ sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called max6650.
+
+config SENSORS_MAX6697
+ tristate "Maxim MAX6697 and compatibles"
+ depends on I2C
+ help
+ If you say yes here you get support for MAX6581, MAX6602, MAX6622,
+ MAX6636, MAX6689, MAX6693, MAX6694, MAX6697, MAX6698, and MAX6699
+ temperature sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called max6697.
+
+config SENSORS_HTU21
+ tristate "Measurement Specialties HTU21D humidity/temperature sensors"
+ depends on I2C
+ help
+ If you say yes here you get support for the Measurement Specialties
+ HTU21D humidity and temperature sensors.
+
+ This driver can also be built as a module. If so, the module
+ will be called htu21.
+
+config SENSORS_MCP3021
+ tristate "Microchip MCP3021 and compatibles"
+ depends on I2C
+ help
+ If you say yes here you get support for MCP3021 and MCP3221.
+ The MCP3021 is a A/D converter (ADC) with 10-bit and the MCP3221
+ with 12-bit resolution.
+
+ This driver can also be built as a module. If so, the module
+ will be called mcp3021.
+
+config SENSORS_ADCXX
+ tristate "National Semiconductor ADCxxxSxxx"
+ depends on SPI_MASTER
+ help
+ If you say yes here you get support for the National Semiconductor
+ ADC<bb><c>S<sss> chip family, where
+ * bb is the resolution in number of bits (8, 10, 12)
+ * c is the number of channels (1, 2, 4, 8)
+ * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500
+ kSPS and 101 for 1 MSPS)
+
+ Examples : ADC081S101, ADC124S501, ...
+
+ This driver can also be built as a module. If so, the module
+ will be called adcxx.
+
config SENSORS_LM63
tristate "National Semiconductor LM63 and compatibles"
depends on I2C
@@ -776,50 +994,6 @@ 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
- default n
- help
- If you say yes here you get support for Linear Technology LTC4215
- Hot Swap Controller I2C interface.
-
- This driver can also be built as a module. If so, the module will
- be called ltc4215.
-
-config SENSORS_LTC4245
- tristate "Linear Technology LTC4245"
- depends on I2C
- default n
- help
- If you say yes here you get support for Linear Technology LTC4245
- Multiple Supply Hot Swap Controller I2C interface.
-
- This driver can also be built as a module. If so, the module will
- be called ltc4245.
-
-config SENSORS_LTC4261
- tristate "Linear Technology LTC4261"
- depends on I2C
- default n
- help
- If you say yes here you get support for Linear Technology LTC4261
- Negative Voltage Hot Swap Controller I2C interface.
-
- This driver can also be built as a module. If so, the module will
- be called ltc4261.
-
config SENSORS_LM95234
tristate "National Semiconductor LM95234"
depends on I2C
@@ -849,125 +1023,33 @@ config SENSORS_LM95245
This driver can also be built as a module. If so, the module
will be called lm95245.
-config SENSORS_MAX1111
- tristate "Maxim MAX1111 Serial 8-bit ADC chip and compatibles"
- depends on SPI_MASTER
- help
- Say y here to support Maxim's MAX1110, MAX1111, MAX1112, and MAX1113
- ADC chips.
-
- This driver can also be built as a module. If so, the module
- will be called max1111.
-
-config SENSORS_MAX16065
- tristate "Maxim MAX16065 System Manager and compatibles"
- depends on I2C
- help
- If you say yes here you get support for hardware monitoring
- capabilities of the following Maxim System Manager chips.
- MAX16065
- MAX16066
- MAX16067
- MAX16068
- MAX16070
- MAX16071
-
- This driver can also be built as a module. If so, the module
- will be called max16065.
-
-config SENSORS_MAX1619
- tristate "Maxim MAX1619 sensor chip"
- depends on I2C
- help
- If you say yes here you get support for MAX1619 sensor chip.
-
- This driver can also be built as a module. If so, the module
- will be called max1619.
-
-config SENSORS_MAX1668
- tristate "Maxim MAX1668 and compatibles"
- depends on I2C
- help
- If you say yes here you get support for MAX1668, MAX1989 and
- MAX1805 chips.
-
- This driver can also be built as a module. If so, the module
- will be called max1668.
-
-config SENSORS_MAX197
- tristate "Maxim MAX197 and compatibles"
- help
- Support for the Maxim MAX197 A/D converter.
- Support will include, but not be limited to, MAX197, and MAX199.
-
- This driver can also be built as a module. If so, the module
- will be called max197.
-
-config SENSORS_MAX6639
- tristate "Maxim MAX6639 sensor chip"
- depends on I2C
- 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_MAX6642
- tristate "Maxim MAX6642 sensor chip"
- depends on I2C
- help
- If you say yes here you get support for MAX6642 sensor chip.
- MAX6642 is a SMBus-Compatible Remote/Local Temperature Sensor
- with Overtemperature Alarm from Maxim.
-
- This driver can also be built as a module. If so, the module
- will be called max6642.
-
-config SENSORS_MAX6650
- tristate "Maxim MAX6650 sensor chip"
- depends on I2C
- help
- If you say yes here you get support for the MAX6650 / MAX6651
- sensor chips.
-
- This driver can also be built as a module. If so, the module
- will be called max6650.
-
-config SENSORS_MAX6697
- tristate "Maxim MAX6697 and compatibles"
- depends on I2C
- help
- If you say yes here you get support for MAX6581, MAX6602, MAX6622,
- MAX6636, MAX6689, MAX6693, MAX6694, MAX6697, MAX6698, and MAX6699
- temperature sensor chips.
-
- This driver can also be built as a module. If so, the module
- will be called max6697.
-
-config SENSORS_MCP3021
- tristate "Microchip MCP3021 and compatibles"
- depends on I2C
+config SENSORS_PC87360
+ tristate "National Semiconductor PC87360 family"
+ depends on !PPC
+ select HWMON_VID
help
- If you say yes here you get support for MCP3021 and MCP3221.
- The MCP3021 is a A/D converter (ADC) with 10-bit and the MCP3221
- with 12-bit resolution.
+ If you say yes here you get access to the hardware monitoring
+ functions of the National Semiconductor PC8736x Super-I/O chips.
+ The PC87360, PC87363 and PC87364 only have fan monitoring and
+ control. The PC87365 and PC87366 additionally have voltage and
+ temperature monitoring.
This driver can also be built as a module. If so, the module
- will be called mcp3021.
+ will be called pc87360.
-config SENSORS_NCT6775
- tristate "Nuvoton NCT6775F and compatibles"
+config SENSORS_PC87427
+ tristate "National Semiconductor PC87427"
depends on !PPC
- select HWMON_VID
help
- If you say yes here you get support for the hardware monitoring
- functionality of the Nuvoton NCT6775F, NCT6776F, NCT6779D
- and compatible Super-I/O chips. This driver replaces the
- w83627ehf driver for NCT6775F and NCT6776F.
+ If you say yes here you get access to the hardware monitoring
+ functions of the National Semiconductor PC87427 Super-I/O chip.
+ The chip has two distinct logical devices, one for fan speed
+ monitoring and control, and one for voltage and temperature
+ monitoring. Fan speed monitoring and control are supported, as
+ well as temperature monitoring. Voltages aren't supported yet.
This driver can also be built as a module. If so, the module
- will be called nct6775.
+ will be called pc87427.
config SENSORS_NTC_THERMISTOR
tristate "NTC thermistor support"
@@ -983,33 +1065,18 @@ config SENSORS_NTC_THERMISTOR
This driver can also be built as a module. If so, the module
will be called ntc-thermistor.
-config SENSORS_PC87360
- tristate "National Semiconductor PC87360 family"
+config SENSORS_NCT6775
+ tristate "Nuvoton NCT6775F and compatibles"
depends on !PPC
select HWMON_VID
help
- If you say yes here you get access to the hardware monitoring
- functions of the National Semiconductor PC8736x Super-I/O chips.
- The PC87360, PC87363 and PC87364 only have fan monitoring and
- control. The PC87365 and PC87366 additionally have voltage and
- temperature monitoring.
-
- This driver can also be built as a module. If so, the module
- will be called pc87360.
-
-config SENSORS_PC87427
- tristate "National Semiconductor PC87427"
- depends on !PPC
- help
- If you say yes here you get access to the hardware monitoring
- functions of the National Semiconductor PC87427 Super-I/O chip.
- The chip has two distinct logical devices, one for fan speed
- monitoring and control, and one for voltage and temperature
- monitoring. Fan speed monitoring and control are supported, as
- well as temperature monitoring. Voltages aren't supported yet.
+ If you say yes here you get support for the hardware monitoring
+ functionality of the Nuvoton NCT6775F, NCT6776F, NCT6779D
+ and compatible Super-I/O chips. This driver replaces the
+ w83627ehf driver for NCT6775F and NCT6776F.
This driver can also be built as a module. If so, the module
- will be called pc87427.
+ will be called nct6775.
config SENSORS_PCF8591
tristate "Philips PCF8591 ADC/DAC"
@@ -1074,21 +1141,6 @@ config SENSORS_SIS5595
This driver can also be built as a module. If so, the module
will be called sis5595.
-config SENSORS_SMM665
- tristate "Summit Microelectronics SMM665"
- depends on I2C
- default n
- help
- If you say yes here you get support for the hardware monitoring
- features of the Summit Microelectronics SMM665/SMM665B Six-Channel
- Active DC Output Controller / Monitor.
-
- Other supported chips are SMM465, SMM665C, SMM764, and SMM766.
- Support for those chips is untested.
-
- This driver can also be built as a module. If so, the module will
- be called smm665.
-
config SENSORS_DME1737
tristate "SMSC DME1737, SCH311x and compatibles"
depends on I2C && !PPC
@@ -1210,6 +1262,31 @@ config SENSORS_SCH5636
This driver can also be built as a module. If so, the module
will be called sch5636.
+config SENSORS_SMM665
+ tristate "Summit Microelectronics SMM665"
+ depends on I2C
+ default n
+ help
+ If you say yes here you get support for the hardware monitoring
+ features of the Summit Microelectronics SMM665/SMM665B Six-Channel
+ Active DC Output Controller / Monitor.
+
+ Other supported chips are SMM465, SMM665C, SMM764, and SMM766.
+ Support for those chips is untested.
+
+ This driver can also be built as a module. If so, the module will
+ be called smm665.
+
+config SENSORS_ADC128D818
+ tristate "Texas Instruments ADC128D818"
+ depends on I2C
+ help
+ If you say yes here you get support for the Texas Instruments
+ ADC128D818 System Monitor with Temperature Sensor chip.
+
+ This driver can also be built as a module. If so, the module
+ will be called adc128d818.
+
config SENSORS_ADS1015
tristate "Texas Instruments ADS1015"
depends on I2C
@@ -1525,37 +1602,6 @@ config SENSORS_ULTRA45
This driver provides support for the Ultra45 workstation environmental
sensors.
-config SENSORS_APPLESMC
- tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)"
- depends on INPUT && X86
- select NEW_LEDS
- select LEDS_CLASS
- select INPUT_POLLDEV
- default n
- help
- This driver provides support for the Apple System Management
- Controller, which provides an accelerometer (Apple Sudden Motion
- Sensor), light sensors, temperature sensors, keyboard backlight
- control and fan control.
-
- Only Intel-based Apple's computers are supported (MacBook Pro,
- MacBook, MacMini).
-
- Data from the different sensors, keyboard backlight control and fan
- control are accessible via sysfs.
-
- This driver also provides an absolute input class device, allowing
- the laptop to act as a pinball machine-esque joystick.
-
- Say Y here if you have an applicable laptop and want to experience
- the awesome power of applesmc.
-
-config SENSORS_MC13783_ADC
- tristate "Freescale MC13783/MC13892 ADC"
- depends on MFD_MC13XXX
- help
- Support for the A/D converter on MC13783 and MC13892 PMIC.
-
if ACPI
comment "ACPI drivers"
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index ec7cde06eb52..c48f9873ac73 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_SENSORS_ABITUGURU3)+= abituguru3.o
obj-$(CONFIG_SENSORS_AD7314) += ad7314.o
obj-$(CONFIG_SENSORS_AD7414) += ad7414.o
obj-$(CONFIG_SENSORS_AD7418) += ad7418.o
+obj-$(CONFIG_SENSORS_ADC128D818) += adc128d818.o
obj-$(CONFIG_SENSORS_ADCXX) += adcxx.o
obj-$(CONFIG_SENSORS_ADM1021) += adm1021.o
obj-$(CONFIG_SENSORS_ADM1025) += adm1025.o
@@ -95,9 +96,12 @@ obj-$(CONFIG_SENSORS_LM93) += lm93.o
obj-$(CONFIG_SENSORS_LM95234) += lm95234.o
obj-$(CONFIG_SENSORS_LM95241) += lm95241.o
obj-$(CONFIG_SENSORS_LM95245) += lm95245.o
+obj-$(CONFIG_SENSORS_LTC2945) += ltc2945.o
obj-$(CONFIG_SENSORS_LTC4151) += ltc4151.o
obj-$(CONFIG_SENSORS_LTC4215) += ltc4215.o
+obj-$(CONFIG_SENSORS_LTC4222) += ltc4222.o
obj-$(CONFIG_SENSORS_LTC4245) += ltc4245.o
+obj-$(CONFIG_SENSORS_LTC4260) += ltc4260.o
obj-$(CONFIG_SENSORS_LTC4261) += ltc4261.o
obj-$(CONFIG_SENSORS_MAX1111) += max1111.o
obj-$(CONFIG_SENSORS_MAX16065) += max16065.o
diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c
new file mode 100644
index 000000000000..5ffd81f19d01
--- /dev/null
+++ b/drivers/hwmon/adc128d818.c
@@ -0,0 +1,491 @@
+/*
+ * Driver for TI ADC128D818 System Monitor with Temperature Sensor
+ *
+ * Copyright (c) 2014 Guenter Roeck
+ *
+ * Derived from lm80.c
+ * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
+ * and Philip Edelbrock <phil@netroedge.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.
+ */
+
+#include <linux/module.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/regulator/consumer.h>
+#include <linux/mutex.h>
+
+/* Addresses to scan
+ * The chip also supports addresses 0x35..0x37. Don't scan those addresses
+ * since they are also used by some EEPROMs, which may result in false
+ * positives.
+ */
+static const unsigned short normal_i2c[] = {
+ 0x1d, 0x1e, 0x1f, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END };
+
+/* registers */
+#define ADC128_REG_IN_MAX(nr) (0x2a + (nr) * 2)
+#define ADC128_REG_IN_MIN(nr) (0x2b + (nr) * 2)
+#define ADC128_REG_IN(nr) (0x20 + (nr))
+
+#define ADC128_REG_TEMP 0x27
+#define ADC128_REG_TEMP_MAX 0x38
+#define ADC128_REG_TEMP_HYST 0x39
+
+#define ADC128_REG_CONFIG 0x00
+#define ADC128_REG_ALARM 0x01
+#define ADC128_REG_MASK 0x03
+#define ADC128_REG_CONV_RATE 0x07
+#define ADC128_REG_ONESHOT 0x09
+#define ADC128_REG_SHUTDOWN 0x0a
+#define ADC128_REG_CONFIG_ADV 0x0b
+#define ADC128_REG_BUSY_STATUS 0x0c
+
+#define ADC128_REG_MAN_ID 0x3e
+#define ADC128_REG_DEV_ID 0x3f
+
+struct adc128_data {
+ struct i2c_client *client;
+ struct regulator *regulator;
+ int vref; /* Reference voltage in mV */
+ struct mutex update_lock;
+ bool valid; /* true if following fields are valid */
+ unsigned long last_updated; /* In jiffies */
+
+ u16 in[3][7]; /* Register value, normalized to 12 bit
+ * 0: input voltage
+ * 1: min limit
+ * 2: max limit
+ */
+ s16 temp[3]; /* Register value, normalized to 9 bit
+ * 0: sensor 1: limit 2: hyst
+ */
+ u8 alarms; /* alarm register value */
+};
+
+static struct adc128_data *adc128_update_device(struct device *dev)
+{
+ struct adc128_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ struct adc128_data *ret = data;
+ int i, rv;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ for (i = 0; i < 7; i++) {
+ rv = i2c_smbus_read_word_swapped(client,
+ ADC128_REG_IN(i));
+ if (rv < 0)
+ goto abort;
+ data->in[0][i] = rv >> 4;
+
+ rv = i2c_smbus_read_byte_data(client,
+ ADC128_REG_IN_MIN(i));
+ if (rv < 0)
+ goto abort;
+ data->in[1][i] = rv << 4;
+
+ rv = i2c_smbus_read_byte_data(client,
+ ADC128_REG_IN_MAX(i));
+ if (rv < 0)
+ goto abort;
+ data->in[2][i] = rv << 4;
+ }
+
+ rv = i2c_smbus_read_word_swapped(client, ADC128_REG_TEMP);
+ if (rv < 0)
+ goto abort;
+ data->temp[0] = rv >> 7;
+
+ rv = i2c_smbus_read_byte_data(client, ADC128_REG_TEMP_MAX);
+ if (rv < 0)
+ goto abort;
+ data->temp[1] = rv << 1;
+
+ rv = i2c_smbus_read_byte_data(client, ADC128_REG_TEMP_HYST);
+ if (rv < 0)
+ goto abort;
+ data->temp[2] = rv << 1;
+
+ rv = i2c_smbus_read_byte_data(client, ADC128_REG_ALARM);
+ if (rv < 0)
+ goto abort;
+ data->alarms |= rv;
+
+ data->last_updated = jiffies;
+ data->valid = true;
+ }
+ goto done;
+
+abort:
+ ret = ERR_PTR(rv);
+ data->valid = false;
+done:
+ mutex_unlock(&data->update_lock);
+ return ret;
+}
+
+static ssize_t adc128_show_in(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct adc128_data *data = adc128_update_device(dev);
+ int index = to_sensor_dev_attr_2(attr)->index;
+ int nr = to_sensor_dev_attr_2(attr)->nr;
+ int val;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ val = DIV_ROUND_CLOSEST(data->in[index][nr] * data->vref, 4095);
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t adc128_set_in(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adc128_data *data = dev_get_drvdata(dev);
+ int index = to_sensor_dev_attr_2(attr)->index;
+ int nr = to_sensor_dev_attr_2(attr)->nr;
+ u8 reg, regval;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ /* 10 mV LSB on limit registers */
+ regval = clamp_val(DIV_ROUND_CLOSEST(val, 10), 0, 255);
+ data->in[index][nr] = regval << 4;
+ reg = index == 1 ? ADC128_REG_IN_MIN(nr) : ADC128_REG_IN_MAX(nr);
+ i2c_smbus_write_byte_data(data->client, reg, regval);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t adc128_show_temp(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct adc128_data *data = adc128_update_device(dev);
+ int index = to_sensor_dev_attr(attr)->index;
+ int temp;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ temp = (data->temp[index] << 7) >> 7; /* sign extend */
+ return sprintf(buf, "%d\n", temp * 500);/* 0.5 degrees C resolution */
+}
+
+static ssize_t adc128_set_temp(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct adc128_data *data = dev_get_drvdata(dev);
+ int index = to_sensor_dev_attr(attr)->index;
+ long val;
+ int err;
+ s8 regval;
+
+ err = kstrtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ regval = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
+ data->temp[index] = regval << 1;
+ i2c_smbus_write_byte_data(data->client,
+ index == 1 ? ADC128_REG_TEMP_MAX
+ : ADC128_REG_TEMP_HYST,
+ regval);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t adc128_show_alarm(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct adc128_data *data = adc128_update_device(dev);
+ int mask = 1 << to_sensor_dev_attr(attr)->index;
+ u8 alarms;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ /*
+ * Clear an alarm after reporting it to user space. If it is still
+ * active, the next update sequence will set the alarm bit again.
+ */
+ alarms = data->alarms;
+ data->alarms &= ~mask;
+
+ return sprintf(buf, "%u\n", !!(alarms & mask));
+}
+
+static SENSOR_DEVICE_ATTR_2(in0_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 0, 0);
+static SENSOR_DEVICE_ATTR_2(in0_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 0, 1);
+static SENSOR_DEVICE_ATTR_2(in0_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 0, 2);
+
+static SENSOR_DEVICE_ATTR_2(in1_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 1, 0);
+static SENSOR_DEVICE_ATTR_2(in1_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 1, 1);
+static SENSOR_DEVICE_ATTR_2(in1_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 1, 2);
+
+static SENSOR_DEVICE_ATTR_2(in2_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 2, 0);
+static SENSOR_DEVICE_ATTR_2(in2_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 2, 1);
+static SENSOR_DEVICE_ATTR_2(in2_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 2, 2);
+
+static SENSOR_DEVICE_ATTR_2(in3_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 3, 0);
+static SENSOR_DEVICE_ATTR_2(in3_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 3, 1);
+static SENSOR_DEVICE_ATTR_2(in3_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 3, 2);
+
+static SENSOR_DEVICE_ATTR_2(in4_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 4, 0);
+static SENSOR_DEVICE_ATTR_2(in4_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 4, 1);
+static SENSOR_DEVICE_ATTR_2(in4_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 4, 2);
+
+static SENSOR_DEVICE_ATTR_2(in5_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 5, 0);
+static SENSOR_DEVICE_ATTR_2(in5_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 5, 1);
+static SENSOR_DEVICE_ATTR_2(in5_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 5, 2);
+
+static SENSOR_DEVICE_ATTR_2(in6_input, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 6, 0);
+static SENSOR_DEVICE_ATTR_2(in6_min, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 6, 1);
+static SENSOR_DEVICE_ATTR_2(in6_max, S_IWUSR | S_IRUGO,
+ adc128_show_in, adc128_set_in, 6, 2);
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, adc128_show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+ adc128_show_temp, adc128_set_temp, 1);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+ adc128_show_temp, adc128_set_temp, 2);
+
+static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, adc128_show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, adc128_show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, adc128_show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, adc128_show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, adc128_show_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, adc128_show_alarm, NULL, 5);
+static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, adc128_show_alarm, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, adc128_show_alarm, NULL, 7);
+
+static struct attribute *adc128_attrs[] = {
+ &sensor_dev_attr_in0_min.dev_attr.attr,
+ &sensor_dev_attr_in1_min.dev_attr.attr,
+ &sensor_dev_attr_in2_min.dev_attr.attr,
+ &sensor_dev_attr_in3_min.dev_attr.attr,
+ &sensor_dev_attr_in4_min.dev_attr.attr,
+ &sensor_dev_attr_in5_min.dev_attr.attr,
+ &sensor_dev_attr_in6_min.dev_attr.attr,
+ &sensor_dev_attr_in0_max.dev_attr.attr,
+ &sensor_dev_attr_in1_max.dev_attr.attr,
+ &sensor_dev_attr_in2_max.dev_attr.attr,
+ &sensor_dev_attr_in3_max.dev_attr.attr,
+ &sensor_dev_attr_in4_max.dev_attr.attr,
+ &sensor_dev_attr_in5_max.dev_attr.attr,
+ &sensor_dev_attr_in6_max.dev_attr.attr,
+ &sensor_dev_attr_in0_input.dev_attr.attr,
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in3_input.dev_attr.attr,
+ &sensor_dev_attr_in4_input.dev_attr.attr,
+ &sensor_dev_attr_in5_input.dev_attr.attr,
+ &sensor_dev_attr_in6_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_in0_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+ &sensor_dev_attr_in3_alarm.dev_attr.attr,
+ &sensor_dev_attr_in4_alarm.dev_attr.attr,
+ &sensor_dev_attr_in5_alarm.dev_attr.attr,
+ &sensor_dev_attr_in6_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(adc128);
+
+static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info)
+{
+ int man_id, dev_id;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA |
+ I2C_FUNC_SMBUS_WORD_DATA))
+ return -ENODEV;
+
+ man_id = i2c_smbus_read_byte_data(client, ADC128_REG_MAN_ID);
+ dev_id = i2c_smbus_read_byte_data(client, ADC128_REG_DEV_ID);
+ if (man_id != 0x01 || dev_id != 0x09)
+ return -ENODEV;
+
+ /* Check unused bits for confirmation */
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG) & 0xf4)
+ return -ENODEV;
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_CONV_RATE) & 0xfe)
+ return -ENODEV;
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_ONESHOT) & 0xfe)
+ return -ENODEV;
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_SHUTDOWN) & 0xfe)
+ return -ENODEV;
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV) & 0xf8)
+ return -ENODEV;
+ if (i2c_smbus_read_byte_data(client, ADC128_REG_BUSY_STATUS) & 0xfc)
+ return -ENODEV;
+
+ strlcpy(info->type, "adc128d818", I2C_NAME_SIZE);
+
+ return 0;
+}
+
+static int adc128_init_client(struct adc128_data *data)
+{
+ struct i2c_client *client = data->client;
+ int err;
+
+ /*
+ * Reset chip to defaults.
+ * This makes most other initializations unnecessary.
+ */
+ err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, 0x80);
+ if (err)
+ return err;
+
+ /* Start monitoring */
+ err = i2c_smbus_write_byte_data(client, ADC128_REG_CONFIG, 0x01);
+ if (err)
+ return err;
+
+ /* If external vref is selected, configure the chip to use it */
+ if (data->regulator) {
+ err = i2c_smbus_write_byte_data(client,
+ ADC128_REG_CONFIG_ADV, 0x01);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int adc128_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct regulator *regulator;
+ struct device *hwmon_dev;
+ struct adc128_data *data;
+ int err, vref;
+
+ data = devm_kzalloc(dev, sizeof(struct adc128_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ /* vref is optional. If specified, is used as chip reference voltage */
+ regulator = devm_regulator_get_optional(dev, "vref");
+ if (!IS_ERR(regulator)) {
+ data->regulator = regulator;
+ err = regulator_enable(regulator);
+ if (err < 0)
+ return err;
+ vref = regulator_get_voltage(regulator);
+ if (vref < 0) {
+ err = vref;
+ goto error;
+ }
+ data->vref = DIV_ROUND_CLOSEST(vref, 1000);
+ } else {
+ data->vref = 2560; /* 2.56V, in mV */
+ }
+
+ data->client = client;
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+
+ /* Initialize the chip */
+ err = adc128_init_client(data);
+ if (err < 0)
+ goto error;
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, adc128_groups);
+ if (IS_ERR(hwmon_dev)) {
+ err = PTR_ERR(hwmon_dev);
+ goto error;
+ }
+
+ return 0;
+
+error:
+ if (data->regulator)
+ regulator_disable(data->regulator);
+ return err;
+}
+
+static int adc128_remove(struct i2c_client *client)
+{
+ struct adc128_data *data = i2c_get_clientdata(client);
+
+ if (data->regulator)
+ regulator_disable(data->regulator);
+
+ return 0;
+}
+
+static const struct i2c_device_id adc128_id[] = {
+ { "adc128d818", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adc128_id);
+
+static struct i2c_driver adc128_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "adc128d818",
+ },
+ .probe = adc128_probe,
+ .remove = adc128_remove,
+ .id_table = adc128_id,
+ .detect = adc128_detect,
+ .address_list = normal_i2c,
+};
+
+module_i2c_driver(adc128_driver);
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("Driver for ADC128D818");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index bbb0b0d463f7..f31bc4c48644 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -94,6 +94,8 @@ struct temp_data {
bool valid;
struct sensor_device_attribute sd_attrs[TOTAL_ATTRS];
char attr_name[TOTAL_ATTRS][CORETEMP_NAME_LENGTH];
+ struct attribute *attrs[TOTAL_ATTRS + 1];
+ struct attribute_group attr_group;
struct mutex update_lock;
};
@@ -114,12 +116,6 @@ struct pdev_entry {
static LIST_HEAD(pdev_list);
static DEFINE_MUTEX(pdev_list_mutex);
-static ssize_t show_name(struct device *dev,
- struct device_attribute *devattr, char *buf)
-{
- return sprintf(buf, "%s\n", DRVNAME);
-}
-
static ssize_t show_label(struct device *dev,
struct device_attribute *devattr, char *buf)
{
@@ -393,20 +389,10 @@ static int get_tjmax(struct cpuinfo_x86 *c, u32 id, struct device *dev)
return adjust_tjmax(c, id, dev);
}
-static int create_name_attr(struct platform_data *pdata,
- struct device *dev)
-{
- sysfs_attr_init(&pdata->name_attr.attr);
- pdata->name_attr.attr.name = "name";
- pdata->name_attr.attr.mode = S_IRUGO;
- pdata->name_attr.show = show_name;
- return device_create_file(dev, &pdata->name_attr);
-}
-
static int create_core_attrs(struct temp_data *tdata, struct device *dev,
int attr_no)
{
- int err, i;
+ int i;
static ssize_t (*const rd_ptr[TOTAL_ATTRS]) (struct device *dev,
struct device_attribute *devattr, char *buf) = {
show_label, show_crit_alarm, show_temp, show_tjmax,
@@ -424,16 +410,10 @@ static int create_core_attrs(struct temp_data *tdata, struct device *dev,
tdata->sd_attrs[i].dev_attr.attr.mode = S_IRUGO;
tdata->sd_attrs[i].dev_attr.show = rd_ptr[i];
tdata->sd_attrs[i].index = attr_no;
- err = device_create_file(dev, &tdata->sd_attrs[i].dev_attr);
- if (err)
- goto exit_free;
+ tdata->attrs[i] = &tdata->sd_attrs[i].dev_attr.attr;
}
- return 0;
-
-exit_free:
- while (--i >= 0)
- device_remove_file(dev, &tdata->sd_attrs[i].dev_attr);
- return err;
+ tdata->attr_group.attrs = tdata->attrs;
+ return sysfs_create_group(&dev->kobj, &tdata->attr_group);
}
@@ -548,7 +528,7 @@ static int create_core_data(struct platform_device *pdev, unsigned int cpu,
pdata->core_data[attr_no] = tdata;
/* Create sysfs interfaces */
- err = create_core_attrs(tdata, &pdev->dev, attr_no);
+ err = create_core_attrs(tdata, pdata->hwmon_dev, attr_no);
if (err)
goto exit_free;
@@ -573,14 +553,12 @@ static void coretemp_add_core(unsigned int cpu, int pkg_flag)
}
static void coretemp_remove_core(struct platform_data *pdata,
- struct device *dev, int indx)
+ int indx)
{
- int i;
struct temp_data *tdata = pdata->core_data[indx];
/* Remove the sysfs attributes */
- for (i = 0; i < tdata->attr_size; i++)
- device_remove_file(dev, &tdata->sd_attrs[i].dev_attr);
+ sysfs_remove_group(&pdata->hwmon_dev->kobj, &tdata->attr_group);
kfree(pdata->core_data[indx]);
pdata->core_data[indx] = NULL;
@@ -588,34 +566,20 @@ static void coretemp_remove_core(struct platform_data *pdata,
static int coretemp_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
struct platform_data *pdata;
- int err;
/* Initialize the per-package data structures */
- pdata = kzalloc(sizeof(struct platform_data), GFP_KERNEL);
+ pdata = devm_kzalloc(dev, sizeof(struct platform_data), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
- err = create_name_attr(pdata, &pdev->dev);
- if (err)
- goto exit_free;
-
pdata->phys_proc_id = pdev->id;
platform_set_drvdata(pdev, pdata);
- pdata->hwmon_dev = hwmon_device_register(&pdev->dev);
- if (IS_ERR(pdata->hwmon_dev)) {
- err = PTR_ERR(pdata->hwmon_dev);
- dev_err(&pdev->dev, "Class registration failed (%d)\n", err);
- goto exit_name;
- }
- return 0;
-
-exit_name:
- device_remove_file(&pdev->dev, &pdata->name_attr);
-exit_free:
- kfree(pdata);
- return err;
+ pdata->hwmon_dev = devm_hwmon_device_register_with_groups(dev, DRVNAME,
+ pdata, NULL);
+ return PTR_ERR_OR_ZERO(pdata->hwmon_dev);
}
static int coretemp_remove(struct platform_device *pdev)
@@ -625,11 +589,8 @@ static int coretemp_remove(struct platform_device *pdev)
for (i = MAX_CORE_DATA - 1; i >= 0; --i)
if (pdata->core_data[i])
- coretemp_remove_core(pdata, &pdev->dev, i);
+ coretemp_remove_core(pdata, i);
- device_remove_file(&pdev->dev, &pdata->name_attr);
- hwmon_device_unregister(pdata->hwmon_dev);
- kfree(pdata);
return 0;
}
@@ -777,7 +738,7 @@ static void put_core_offline(unsigned int cpu)
return;
if (pdata->core_data[indx] && pdata->core_data[indx]->cpu == cpu)
- coretemp_remove_core(pdata, &pdev->dev, indx);
+ coretemp_remove_core(pdata, indx);
/*
* If a HT sibling of a core is taken offline, but another HT sibling
diff --git a/drivers/hwmon/emc2103.c b/drivers/hwmon/emc2103.c
index 2c137b26acb4..fd892dd48e4c 100644
--- a/drivers/hwmon/emc2103.c
+++ b/drivers/hwmon/emc2103.c
@@ -349,7 +349,7 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *da,
dev_dbg(&client->dev, "reg 0x%02x, err %d\n",
REG_FAN_CONF1, status);
mutex_unlock(&data->update_lock);
- return -EIO;
+ return status;
}
status &= 0x9F;
status |= (new_range_bits << 5);
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index e176a43af63d..a26c385a435b 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -22,6 +22,7 @@
#include <linux/gfp.h>
#include <linux/spinlock.h>
#include <linux/pci.h>
+#include <linux/string.h>
#define HWMON_ID_PREFIX "hwmon"
#define HWMON_ID_FORMAT HWMON_ID_PREFIX "%d"
@@ -99,6 +100,10 @@ hwmon_device_register_with_groups(struct device *dev, const char *name,
struct hwmon_device *hwdev;
int err, id;
+ /* Do not accept invalid characters in hwmon name attribute */
+ if (name && (!strlen(name) || strpbrk(name, "-* \t\n")))
+ return ERR_PTR(-EINVAL);
+
id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL);
if (id < 0)
return ERR_PTR(id);
diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c
index 708081b68c6f..9fbb1b1fdff3 100644
--- a/drivers/hwmon/iio_hwmon.c
+++ b/drivers/hwmon/iio_hwmon.c
@@ -31,6 +31,7 @@ struct iio_hwmon_state {
int num_channels;
struct device *hwmon_dev;
struct attribute_group attr_group;
+ const struct attribute_group *groups[2];
struct attribute **attrs;
};
@@ -56,19 +57,6 @@ static ssize_t iio_hwmon_read_val(struct device *dev,
return sprintf(buf, "%d\n", result);
}
-static ssize_t show_name(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- const char *name = "iio_hwmon";
-
- if (dev->of_node && dev->of_node->name)
- name = dev->of_node->name;
-
- return sprintf(buf, "%s\n", name);
-}
-
-static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
-
static int iio_hwmon_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -78,6 +66,10 @@ static int iio_hwmon_probe(struct platform_device *pdev)
int in_i = 1, temp_i = 1, curr_i = 1;
enum iio_chan_type type;
struct iio_channel *channels;
+ const char *name = "iio_hwmon";
+
+ if (dev->of_node && dev->of_node->name)
+ name = dev->of_node->name;
channels = iio_channel_get_all(dev);
if (IS_ERR(channels))
@@ -96,7 +88,7 @@ static int iio_hwmon_probe(struct platform_device *pdev)
st->num_channels++;
st->attrs = devm_kzalloc(dev,
- sizeof(*st->attrs) * (st->num_channels + 2),
+ sizeof(*st->attrs) * (st->num_channels + 1),
GFP_KERNEL);
if (st->attrs == NULL) {
ret = -ENOMEM;
@@ -144,22 +136,18 @@ static int iio_hwmon_probe(struct platform_device *pdev)
a->index = i;
st->attrs[i] = &a->dev_attr.attr;
}
- st->attrs[st->num_channels] = &dev_attr_name.attr;
- st->attr_group.attrs = st->attrs;
- platform_set_drvdata(pdev, st);
- ret = sysfs_create_group(&dev->kobj, &st->attr_group);
- if (ret < 0)
- goto error_release_channels;
- st->hwmon_dev = hwmon_device_register(dev);
+ st->attr_group.attrs = st->attrs;
+ st->groups[0] = &st->attr_group;
+ st->hwmon_dev = hwmon_device_register_with_groups(dev, name, st,
+ st->groups);
if (IS_ERR(st->hwmon_dev)) {
ret = PTR_ERR(st->hwmon_dev);
- goto error_remove_group;
+ goto error_release_channels;
}
+ platform_set_drvdata(pdev, st);
return 0;
-error_remove_group:
- sysfs_remove_group(&dev->kobj, &st->attr_group);
error_release_channels:
iio_channel_release_all(channels);
return ret;
@@ -170,7 +158,6 @@ static int iio_hwmon_remove(struct platform_device *pdev)
struct iio_hwmon_state *st = platform_get_drvdata(pdev);
hwmon_device_unregister(st->hwmon_dev);
- sysfs_remove_group(&pdev->dev.kobj, &st->attr_group);
iio_channel_release_all(st->channels);
return 0;
diff --git a/drivers/hwmon/jz4740-hwmon.c b/drivers/hwmon/jz4740-hwmon.c
index a183e488db78..7488e36809c8 100644
--- a/drivers/hwmon/jz4740-hwmon.c
+++ b/drivers/hwmon/jz4740-hwmon.c
@@ -28,7 +28,6 @@
#include <linux/hwmon.h>
struct jz4740_hwmon {
- struct resource *mem;
void __iomem *base;
int irq;
@@ -106,6 +105,7 @@ static int jz4740_hwmon_probe(struct platform_device *pdev)
{
int ret;
struct jz4740_hwmon *hwmon;
+ struct resource *mem;
hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL);
if (!hwmon)
@@ -120,25 +120,10 @@ static int jz4740_hwmon_probe(struct platform_device *pdev)
return hwmon->irq;
}
- hwmon->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!hwmon->mem) {
- dev_err(&pdev->dev, "Failed to get platform mmio resource\n");
- return -ENOENT;
- }
-
- hwmon->mem = devm_request_mem_region(&pdev->dev, hwmon->mem->start,
- resource_size(hwmon->mem), pdev->name);
- if (!hwmon->mem) {
- dev_err(&pdev->dev, "Failed to request mmio memory region\n");
- return -EBUSY;
- }
-
- hwmon->base = devm_ioremap_nocache(&pdev->dev, hwmon->mem->start,
- resource_size(hwmon->mem));
- if (!hwmon->base) {
- dev_err(&pdev->dev, "Failed to ioremap mmio memory\n");
- return -EBUSY;
- }
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hwmon->base = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(hwmon->base))
+ return PTR_ERR(hwmon->base);
init_completion(&hwmon->read_completion);
mutex_init(&hwmon->lock);
diff --git a/drivers/hwmon/lm95241.c b/drivers/hwmon/lm95241.c
index 4b68fb2a31d7..cdf19adaec79 100644
--- a/drivers/hwmon/lm95241.c
+++ b/drivers/hwmon/lm95241.c
@@ -89,7 +89,7 @@ static const u8 lm95241_reg_address[] = {
/* Client data (each client gets its own) */
struct lm95241_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
unsigned long last_updated, interval; /* in jiffies */
char valid; /* zero until following fields are valid */
@@ -113,8 +113,8 @@ static int temp_from_reg_unsigned(u8 val_h, u8 val_l)
static struct lm95241_data *lm95241_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
@@ -122,7 +122,7 @@ static struct lm95241_data *lm95241_update_device(struct device *dev)
!data->valid) {
int i;
- dev_dbg(&client->dev, "Updating lm95241 data.\n");
+ dev_dbg(dev, "Updating lm95241 data.\n");
for (i = 0; i < ARRAY_SIZE(lm95241_reg_address); i++)
data->temp[i]
= i2c_smbus_read_byte_data(client,
@@ -153,8 +153,7 @@ static ssize_t show_input(struct device *dev, struct device_attribute *attr,
static ssize_t show_type(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE - 1,
data->model & to_sensor_dev_attr(attr)->index ? "1\n" : "2\n");
@@ -163,8 +162,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr,
static ssize_t set_type(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int shift;
u8 mask = to_sensor_dev_attr(attr)->index;
@@ -201,8 +200,7 @@ static ssize_t set_type(struct device *dev, struct device_attribute *attr,
static ssize_t show_min(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE - 1,
data->config & to_sensor_dev_attr(attr)->index ?
@@ -212,8 +210,7 @@ static ssize_t show_min(struct device *dev, struct device_attribute *attr,
static ssize_t set_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
long val;
if (kstrtol(buf, 10, &val) < 0)
@@ -229,7 +226,8 @@ static ssize_t set_min(struct device *dev, struct device_attribute *attr,
data->config &= ~to_sensor_dev_attr(attr)->index;
data->valid = 0;
- i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config);
+ i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG,
+ data->config);
mutex_unlock(&data->update_lock);
@@ -239,8 +237,7 @@ static ssize_t set_min(struct device *dev, struct device_attribute *attr,
static ssize_t show_max(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE - 1,
data->config & to_sensor_dev_attr(attr)->index ?
@@ -250,8 +247,7 @@ static ssize_t show_max(struct device *dev, struct device_attribute *attr,
static ssize_t set_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
long val;
if (kstrtol(buf, 10, &val) < 0)
@@ -267,7 +263,8 @@ static ssize_t set_max(struct device *dev, struct device_attribute *attr,
data->config &= ~to_sensor_dev_attr(attr)->index;
data->valid = 0;
- i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config);
+ i2c_smbus_write_byte_data(data->client, LM95241_REG_RW_CONFIG,
+ data->config);
mutex_unlock(&data->update_lock);
@@ -286,8 +283,7 @@ static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95241_data *data = i2c_get_clientdata(client);
+ struct lm95241_data *data = dev_get_drvdata(dev);
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -316,7 +312,7 @@ static SENSOR_DEVICE_ATTR(temp3_max, S_IWUSR | S_IRUGO, show_max, set_max,
static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
set_interval);
-static struct attribute *lm95241_attributes[] = {
+static struct attribute *lm95241_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
@@ -329,10 +325,7 @@ static struct attribute *lm95241_attributes[] = {
&dev_attr_update_interval.attr,
NULL
};
-
-static const struct attribute_group lm95241_group = {
- .attrs = lm95241_attributes,
-};
+ATTRIBUTE_GROUPS(lm95241);
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm95241_detect(struct i2c_client *new_client,
@@ -366,14 +359,11 @@ static int lm95241_detect(struct i2c_client *new_client,
return 0;
}
-static void lm95241_init_client(struct i2c_client *client)
+static void lm95241_init_client(struct i2c_client *client,
+ struct lm95241_data *data)
{
- struct lm95241_data *data = i2c_get_clientdata(client);
-
data->interval = HZ; /* 1 sec default */
- data->valid = 0;
data->config = CFG_CR0076;
- data->model = 0;
data->trutherm = (TT_OFF << TT1_SHIFT) | (TT_OFF << TT2_SHIFT);
i2c_smbus_write_byte_data(client, LM95241_REG_RW_CONFIG, data->config);
@@ -385,49 +375,27 @@ static void lm95241_init_client(struct i2c_client *client)
data->model);
}
-static int lm95241_probe(struct i2c_client *new_client,
+static int lm95241_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct lm95241_data *data;
- int err;
+ struct device *hwmon_dev;
- data = devm_kzalloc(&new_client->dev, sizeof(struct lm95241_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct lm95241_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(new_client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the LM95241 chip */
- lm95241_init_client(new_client);
+ lm95241_init_client(client, data);
- /* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm95241_group);
- if (err)
- return err;
-
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove_files;
- }
-
- return 0;
-
-exit_remove_files:
- sysfs_remove_group(&new_client->dev.kobj, &lm95241_group);
- return err;
-}
-
-static int lm95241_remove(struct i2c_client *client)
-{
- struct lm95241_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm95241_group);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ lm95241_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
/* Driver data (common to all clients) */
@@ -444,7 +412,6 @@ static struct i2c_driver lm95241_driver = {
.name = DEVNAME,
},
.probe = lm95241_probe,
- .remove = lm95241_remove,
.id_table = lm95241_id,
.detect = lm95241_detect,
.address_list = normal_i2c,
diff --git a/drivers/hwmon/lm95245.c b/drivers/hwmon/lm95245.c
index a6c85f0ff8f3..0ae0dfdafdff 100644
--- a/drivers/hwmon/lm95245.c
+++ b/drivers/hwmon/lm95245.c
@@ -115,7 +115,7 @@ static const u8 lm95245_reg_address[] = {
/* Client data (each client gets its own) */
struct lm95245_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
unsigned long last_updated; /* in jiffies */
unsigned long interval; /* in msecs */
@@ -140,8 +140,8 @@ static int temp_from_reg_signed(u8 val_h, u8 val_l)
static struct lm95245_data *lm95245_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
mutex_lock(&data->update_lock);
@@ -149,7 +149,6 @@ static struct lm95245_data *lm95245_update_device(struct device *dev)
+ msecs_to_jiffies(data->interval)) || !data->valid) {
int i;
- dev_dbg(&client->dev, "Updating lm95245 data.\n");
for (i = 0; i < ARRAY_SIZE(lm95245_reg_address); i++)
data->regs[i]
= i2c_smbus_read_byte_data(client,
@@ -249,9 +248,9 @@ static ssize_t show_limit(struct device *dev, struct device_attribute *attr,
static ssize_t set_limit(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
int index = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -272,27 +271,38 @@ static ssize_t set_limit(struct device *dev, struct device_attribute *attr,
return count;
}
+static ssize_t show_crit_hyst(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct lm95245_data *data = lm95245_update_device(dev);
+ int index = to_sensor_dev_attr(attr)->index;
+ int hyst = data->regs[index] - data->regs[8];
+
+ return snprintf(buf, PAGE_SIZE - 1, "%d\n", hyst * 1000);
+}
+
static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ int index = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = data->client;
unsigned long val;
+ int hyst, limit;
if (kstrtoul(buf, 10, &val) < 0)
return -EINVAL;
- val /= 1000;
-
- val = clamp_val(val, 0, 31);
-
mutex_lock(&data->update_lock);
- data->valid = 0;
+ limit = i2c_smbus_read_byte_data(client, lm95245_reg_address[index]);
+ hyst = limit - val / 1000;
+ hyst = clamp_val(hyst, 0, 31);
+ data->regs[8] = hyst;
/* shared crit hysteresis */
i2c_smbus_write_byte_data(client, LM95245_REG_RW_COMMON_HYSTERESIS,
- val);
+ hyst);
mutex_unlock(&data->update_lock);
@@ -302,8 +312,7 @@ static ssize_t set_crit_hyst(struct device *dev, struct device_attribute *attr,
static ssize_t show_type(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE - 1,
data->config2 & CFG2_REMOTE_TT ? "1\n" : "2\n");
@@ -312,8 +321,8 @@ static ssize_t show_type(struct device *dev, struct device_attribute *attr,
static ssize_t set_type(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -359,8 +368,8 @@ static ssize_t show_interval(struct device *dev, struct device_attribute *attr,
static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct lm95245_data *data = i2c_get_clientdata(client);
+ struct lm95245_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
if (kstrtoul(buf, 10, &val) < 0)
@@ -378,16 +387,15 @@ static ssize_t set_interval(struct device *dev, struct device_attribute *attr,
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_input, NULL, 0);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_limit,
set_limit, 6);
-static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_limit,
- set_crit_hyst, 8);
+static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_crit_hyst,
+ set_crit_hyst, 6);
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL,
STATUS1_LOC);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_input, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_limit,
set_limit, 7);
-static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_limit,
- set_crit_hyst, 8);
+static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_crit_hyst, NULL, 7);
static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL,
STATUS1_RTCRIT);
static SENSOR_DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type,
@@ -398,7 +406,7 @@ static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL,
static DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, show_interval,
set_interval);
-static struct attribute *lm95245_attributes[] = {
+static struct attribute *lm95245_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_crit.dev_attr.attr,
&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
@@ -412,10 +420,7 @@ static struct attribute *lm95245_attributes[] = {
&dev_attr_update_interval.attr,
NULL
};
-
-static const struct attribute_group lm95245_group = {
- .attrs = lm95245_attributes,
-};
+ATTRIBUTE_GROUPS(lm95245);
/* Return 0 if detection is successful, -ENODEV otherwise */
static int lm95245_detect(struct i2c_client *new_client,
@@ -436,11 +441,9 @@ static int lm95245_detect(struct i2c_client *new_client,
return 0;
}
-static void lm95245_init_client(struct i2c_client *client)
+static void lm95245_init_client(struct i2c_client *client,
+ struct lm95245_data *data)
{
- struct lm95245_data *data = i2c_get_clientdata(client);
-
- data->valid = 0;
data->interval = lm95245_read_conversion_rate(client);
data->config1 = i2c_smbus_read_byte_data(client,
@@ -456,49 +459,27 @@ static void lm95245_init_client(struct i2c_client *client)
}
}
-static int lm95245_probe(struct i2c_client *new_client,
+static int lm95245_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct lm95245_data *data;
- int err;
+ struct device *hwmon_dev;
- data = devm_kzalloc(&new_client->dev, sizeof(struct lm95245_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct lm95245_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(new_client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the LM95245 chip */
- lm95245_init_client(new_client);
-
- /* Register sysfs hooks */
- err = sysfs_create_group(&new_client->dev.kobj, &lm95245_group);
- if (err)
- return err;
-
- data->hwmon_dev = hwmon_device_register(&new_client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove_files;
- }
-
- return 0;
-
-exit_remove_files:
- sysfs_remove_group(&new_client->dev.kobj, &lm95245_group);
- return err;
-}
+ lm95245_init_client(client, data);
-static int lm95245_remove(struct i2c_client *client)
-{
- struct lm95245_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &lm95245_group);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ lm95245_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
/* Driver data (common to all clients) */
@@ -514,7 +495,6 @@ static struct i2c_driver lm95245_driver = {
.name = DEVNAME,
},
.probe = lm95245_probe,
- .remove = lm95245_remove,
.id_table = lm95245_id,
.detect = lm95245_detect,
.address_list = normal_i2c,
diff --git a/drivers/hwmon/ltc2945.c b/drivers/hwmon/ltc2945.c
new file mode 100644
index 000000000000..c104cc32989d
--- /dev/null
+++ b/drivers/hwmon/ltc2945.c
@@ -0,0 +1,519 @@
+/*
+ * Driver for Linear Technology LTC2945 I2C Power Monitor
+ *
+ * Copyright (c) 2014 Guenter Roeck
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/jiffies.h>
+#include <linux/regmap.h>
+
+/* chip registers */
+#define LTC2945_CONTROL 0x00
+#define LTC2945_ALERT 0x01
+#define LTC2945_STATUS 0x02
+#define LTC2945_FAULT 0x03
+#define LTC2945_POWER_H 0x05
+#define LTC2945_MAX_POWER_H 0x08
+#define LTC2945_MIN_POWER_H 0x0b
+#define LTC2945_MAX_POWER_THRES_H 0x0e
+#define LTC2945_MIN_POWER_THRES_H 0x11
+#define LTC2945_SENSE_H 0x14
+#define LTC2945_MAX_SENSE_H 0x16
+#define LTC2945_MIN_SENSE_H 0x18
+#define LTC2945_MAX_SENSE_THRES_H 0x1a
+#define LTC2945_MIN_SENSE_THRES_H 0x1c
+#define LTC2945_VIN_H 0x1e
+#define LTC2945_MAX_VIN_H 0x20
+#define LTC2945_MIN_VIN_H 0x22
+#define LTC2945_MAX_VIN_THRES_H 0x24
+#define LTC2945_MIN_VIN_THRES_H 0x26
+#define LTC2945_ADIN_H 0x28
+#define LTC2945_MAX_ADIN_H 0x2a
+#define LTC2945_MIN_ADIN_H 0x2c
+#define LTC2945_MAX_ADIN_THRES_H 0x2e
+#define LTC2945_MIN_ADIN_THRES_H 0x30
+#define LTC2945_MIN_ADIN_THRES_L 0x31
+
+/* Fault register bits */
+
+#define FAULT_ADIN_UV (1 << 0)
+#define FAULT_ADIN_OV (1 << 1)
+#define FAULT_VIN_UV (1 << 2)
+#define FAULT_VIN_OV (1 << 3)
+#define FAULT_SENSE_UV (1 << 4)
+#define FAULT_SENSE_OV (1 << 5)
+#define FAULT_POWER_UV (1 << 6)
+#define FAULT_POWER_OV (1 << 7)
+
+/* Control register bits */
+
+#define CONTROL_MULT_SELECT (1 << 0)
+#define CONTROL_TEST_MODE (1 << 4)
+
+static inline bool is_power_reg(u8 reg)
+{
+ return reg < LTC2945_SENSE_H;
+}
+
+/* Return the value from the given register in uW, mV, or mA */
+static long long ltc2945_reg_to_val(struct device *dev, u8 reg)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int control;
+ u8 buf[3];
+ long long val;
+ int ret;
+
+ ret = regmap_bulk_read(regmap, reg, buf,
+ is_power_reg(reg) ? 3 : 2);
+ if (ret < 0)
+ return ret;
+
+ if (is_power_reg(reg)) {
+ /* power */
+ val = (buf[0] << 16) + (buf[1] << 8) + buf[2];
+ } else {
+ /* current, voltage */
+ val = (buf[0] << 4) + (buf[1] >> 4);
+ }
+
+ switch (reg) {
+ case LTC2945_POWER_H:
+ case LTC2945_MAX_POWER_H:
+ case LTC2945_MIN_POWER_H:
+ case LTC2945_MAX_POWER_THRES_H:
+ case LTC2945_MIN_POWER_THRES_H:
+ /*
+ * Convert to uW by assuming current is measured with
+ * an 1mOhm sense resistor, similar to current
+ * measurements.
+ * Control register bit 0 selects if voltage at SENSE+/VDD
+ * or voltage at ADIN is used to measure power.
+ */
+ ret = regmap_read(regmap, LTC2945_CONTROL, &control);
+ if (ret < 0)
+ return ret;
+ if (control & CONTROL_MULT_SELECT) {
+ /* 25 mV * 25 uV = 0.625 uV resolution. */
+ val *= 625LL;
+ } else {
+ /* 0.5 mV * 25 uV = 0.0125 uV resolution. */
+ val = (val * 25LL) >> 1;
+ }
+ break;
+ case LTC2945_VIN_H:
+ case LTC2945_MAX_VIN_H:
+ case LTC2945_MIN_VIN_H:
+ case LTC2945_MAX_VIN_THRES_H:
+ case LTC2945_MIN_VIN_THRES_H:
+ /* 25 mV resolution. Convert to mV. */
+ val *= 25;
+ break;
+ case LTC2945_ADIN_H:
+ case LTC2945_MAX_ADIN_H:
+ case LTC2945_MIN_ADIN_THRES_H:
+ case LTC2945_MAX_ADIN_THRES_H:
+ case LTC2945_MIN_ADIN_H:
+ /* 0.5mV resolution. Convert to mV. */
+ val = val >> 1;
+ break;
+ case LTC2945_SENSE_H:
+ case LTC2945_MAX_SENSE_H:
+ case LTC2945_MIN_SENSE_H:
+ case LTC2945_MAX_SENSE_THRES_H:
+ case LTC2945_MIN_SENSE_THRES_H:
+ /*
+ * 25 uV resolution. Convert to current as measured with
+ * an 1 mOhm sense resistor, in mA. If a different sense
+ * resistor is installed, calculate the actual current by
+ * dividing the reported current by the sense resistor value
+ * in mOhm.
+ */
+ val *= 25;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return val;
+}
+
+static int ltc2945_val_to_reg(struct device *dev, u8 reg,
+ unsigned long val)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int control;
+ int ret;
+
+ switch (reg) {
+ case LTC2945_POWER_H:
+ case LTC2945_MAX_POWER_H:
+ case LTC2945_MIN_POWER_H:
+ case LTC2945_MAX_POWER_THRES_H:
+ case LTC2945_MIN_POWER_THRES_H:
+ /*
+ * Convert to register value by assuming current is measured
+ * with an 1mOhm sense resistor, similar to current
+ * measurements.
+ * Control register bit 0 selects if voltage at SENSE+/VDD
+ * or voltage at ADIN is used to measure power, which in turn
+ * determines register calculations.
+ */
+ ret = regmap_read(regmap, LTC2945_CONTROL, &control);
+ if (ret < 0)
+ return ret;
+ if (control & CONTROL_MULT_SELECT) {
+ /* 25 mV * 25 uV = 0.625 uV resolution. */
+ val = DIV_ROUND_CLOSEST(val, 625);
+ } else {
+ /*
+ * 0.5 mV * 25 uV = 0.0125 uV resolution.
+ * Divide first to avoid overflow;
+ * accept loss of accuracy.
+ */
+ val = DIV_ROUND_CLOSEST(val, 25) * 2;
+ }
+ break;
+ case LTC2945_VIN_H:
+ case LTC2945_MAX_VIN_H:
+ case LTC2945_MIN_VIN_H:
+ case LTC2945_MAX_VIN_THRES_H:
+ case LTC2945_MIN_VIN_THRES_H:
+ /* 25 mV resolution. */
+ val /= 25;
+ break;
+ case LTC2945_ADIN_H:
+ case LTC2945_MAX_ADIN_H:
+ case LTC2945_MIN_ADIN_THRES_H:
+ case LTC2945_MAX_ADIN_THRES_H:
+ case LTC2945_MIN_ADIN_H:
+ /* 0.5mV resolution. */
+ val *= 2;
+ break;
+ case LTC2945_SENSE_H:
+ case LTC2945_MAX_SENSE_H:
+ case LTC2945_MIN_SENSE_H:
+ case LTC2945_MAX_SENSE_THRES_H:
+ case LTC2945_MIN_SENSE_THRES_H:
+ /*
+ * 25 uV resolution. Convert to current as measured with
+ * an 1 mOhm sense resistor, in mA. If a different sense
+ * resistor is installed, calculate the actual current by
+ * dividing the reported current by the sense resistor value
+ * in mOhm.
+ */
+ val = DIV_ROUND_CLOSEST(val, 25);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return val;
+}
+
+static ssize_t ltc2945_show_value(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ long long value;
+
+ value = ltc2945_reg_to_val(dev, attr->index);
+ if (value < 0)
+ return value;
+ return snprintf(buf, PAGE_SIZE, "%lld\n", value);
+}
+
+static ssize_t ltc2945_set_value(struct device *dev,
+ struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct regmap *regmap = dev_get_drvdata(dev);
+ u8 reg = attr->index;
+ unsigned long val;
+ u8 regbuf[3];
+ int num_regs;
+ int regval;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ /* convert to register value, then clamp and write result */
+ regval = ltc2945_val_to_reg(dev, reg, val);
+ if (is_power_reg(reg)) {
+ regval = clamp_val(regval, 0, 0xffffff);
+ regbuf[0] = regval >> 16;
+ regbuf[1] = (regval >> 8) & 0xff;
+ regbuf[2] = regval;
+ num_regs = 3;
+ } else {
+ regval = clamp_val(regval, 0, 0xfff) << 4;
+ regbuf[0] = regval >> 8;
+ regbuf[1] = regval & 0xff;
+ num_regs = 2;
+ }
+ ret = regmap_bulk_write(regmap, reg, regbuf, num_regs);
+ return ret < 0 ? ret : count;
+}
+
+static ssize_t ltc2945_reset_history(struct device *dev,
+ struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct regmap *regmap = dev_get_drvdata(dev);
+ u8 reg = attr->index;
+ int num_regs = is_power_reg(reg) ? 3 : 2;
+ u8 buf_min[3] = { 0xff, 0xff, 0xff };
+ u8 buf_max[3] = { 0, 0, 0 };
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+ if (val != 1)
+ return -EINVAL;
+
+ ret = regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE,
+ CONTROL_TEST_MODE);
+
+ /* Reset minimum */
+ ret = regmap_bulk_write(regmap, reg, buf_min, num_regs);
+ if (ret)
+ return ret;
+
+ switch (reg) {
+ case LTC2945_MIN_POWER_H:
+ reg = LTC2945_MAX_POWER_H;
+ break;
+ case LTC2945_MIN_SENSE_H:
+ reg = LTC2945_MAX_SENSE_H;
+ break;
+ case LTC2945_MIN_VIN_H:
+ reg = LTC2945_MAX_VIN_H;
+ break;
+ case LTC2945_MIN_ADIN_H:
+ reg = LTC2945_MAX_ADIN_H;
+ break;
+ default:
+ BUG();
+ break;
+ }
+ /* Reset maximum */
+ ret = regmap_bulk_write(regmap, reg, buf_max, num_regs);
+
+ /* Try resetting test mode even if there was an error */
+ regmap_update_bits(regmap, LTC2945_CONTROL, CONTROL_TEST_MODE, 0);
+
+ return ret ? : count;
+}
+
+static ssize_t ltc2945_show_bool(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int fault;
+ int ret;
+
+ ret = regmap_read(regmap, LTC2945_FAULT, &fault);
+ if (ret < 0)
+ return ret;
+
+ fault &= attr->index;
+ if (fault) /* Clear reported faults in chip register */
+ regmap_update_bits(regmap, LTC2945_FAULT, attr->index, 0);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!fault);
+}
+
+/* Input voltages */
+
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_VIN_H);
+static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MIN_VIN_THRES_H);
+static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MAX_VIN_THRES_H);
+static SENSOR_DEVICE_ATTR(in1_lowest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MIN_VIN_H);
+static SENSOR_DEVICE_ATTR(in1_highest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MAX_VIN_H);
+static SENSOR_DEVICE_ATTR(in1_reset_history, S_IWUSR, NULL,
+ ltc2945_reset_history, LTC2945_MIN_VIN_H);
+
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_ADIN_H);
+static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MIN_ADIN_THRES_H);
+static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MAX_ADIN_THRES_H);
+static SENSOR_DEVICE_ATTR(in2_lowest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MIN_ADIN_H);
+static SENSOR_DEVICE_ATTR(in2_highest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MAX_ADIN_H);
+static SENSOR_DEVICE_ATTR(in2_reset_history, S_IWUSR, NULL,
+ ltc2945_reset_history, LTC2945_MIN_ADIN_H);
+
+/* Voltage alarms */
+
+static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_VIN_UV);
+static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_VIN_OV);
+static SENSOR_DEVICE_ATTR(in2_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_ADIN_UV);
+static SENSOR_DEVICE_ATTR(in2_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_ADIN_OV);
+
+/* Currents (via sense resistor) */
+
+static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_SENSE_H);
+static SENSOR_DEVICE_ATTR(curr1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MIN_SENSE_THRES_H);
+static SENSOR_DEVICE_ATTR(curr1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MAX_SENSE_THRES_H);
+static SENSOR_DEVICE_ATTR(curr1_lowest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MIN_SENSE_H);
+static SENSOR_DEVICE_ATTR(curr1_highest, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_MAX_SENSE_H);
+static SENSOR_DEVICE_ATTR(curr1_reset_history, S_IWUSR, NULL,
+ ltc2945_reset_history, LTC2945_MIN_SENSE_H);
+
+/* Current alarms */
+
+static SENSOR_DEVICE_ATTR(curr1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_SENSE_UV);
+static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_SENSE_OV);
+
+/* Power */
+
+static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ltc2945_show_value, NULL,
+ LTC2945_POWER_H);
+static SENSOR_DEVICE_ATTR(power1_min, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MIN_POWER_THRES_H);
+static SENSOR_DEVICE_ATTR(power1_max, S_IRUGO | S_IWUSR, ltc2945_show_value,
+ ltc2945_set_value, LTC2945_MAX_POWER_THRES_H);
+static SENSOR_DEVICE_ATTR(power1_input_lowest, S_IRUGO, ltc2945_show_value,
+ NULL, LTC2945_MIN_POWER_H);
+static SENSOR_DEVICE_ATTR(power1_input_highest, S_IRUGO, ltc2945_show_value,
+ NULL, LTC2945_MAX_POWER_H);
+static SENSOR_DEVICE_ATTR(power1_reset_history, S_IWUSR, NULL,
+ ltc2945_reset_history, LTC2945_MIN_POWER_H);
+
+/* Power alarms */
+
+static SENSOR_DEVICE_ATTR(power1_min_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_POWER_UV);
+static SENSOR_DEVICE_ATTR(power1_max_alarm, S_IRUGO, ltc2945_show_bool, NULL,
+ FAULT_POWER_OV);
+
+static struct attribute *ltc2945_attrs[] = {
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in1_min.dev_attr.attr,
+ &sensor_dev_attr_in1_max.dev_attr.attr,
+ &sensor_dev_attr_in1_lowest.dev_attr.attr,
+ &sensor_dev_attr_in1_highest.dev_attr.attr,
+ &sensor_dev_attr_in1_reset_history.dev_attr.attr,
+ &sensor_dev_attr_in1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_max_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in2_min.dev_attr.attr,
+ &sensor_dev_attr_in2_max.dev_attr.attr,
+ &sensor_dev_attr_in2_lowest.dev_attr.attr,
+ &sensor_dev_attr_in2_highest.dev_attr.attr,
+ &sensor_dev_attr_in2_reset_history.dev_attr.attr,
+ &sensor_dev_attr_in2_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_max_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_curr1_input.dev_attr.attr,
+ &sensor_dev_attr_curr1_min.dev_attr.attr,
+ &sensor_dev_attr_curr1_max.dev_attr.attr,
+ &sensor_dev_attr_curr1_lowest.dev_attr.attr,
+ &sensor_dev_attr_curr1_highest.dev_attr.attr,
+ &sensor_dev_attr_curr1_reset_history.dev_attr.attr,
+ &sensor_dev_attr_curr1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_curr1_max_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_power1_input.dev_attr.attr,
+ &sensor_dev_attr_power1_min.dev_attr.attr,
+ &sensor_dev_attr_power1_max.dev_attr.attr,
+ &sensor_dev_attr_power1_input_lowest.dev_attr.attr,
+ &sensor_dev_attr_power1_input_highest.dev_attr.attr,
+ &sensor_dev_attr_power1_reset_history.dev_attr.attr,
+ &sensor_dev_attr_power1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_power1_max_alarm.dev_attr.attr,
+
+ NULL,
+};
+ATTRIBUTE_GROUPS(ltc2945);
+
+static struct regmap_config ltc2945_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LTC2945_MIN_ADIN_THRES_L,
+};
+
+static int ltc2945_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &ltc2945_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ /* Clear faults */
+ regmap_write(regmap, LTC2945_FAULT, 0x00);
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ regmap,
+ ltc2945_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id ltc2945_id[] = {
+ {"ltc2945", 0},
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, ltc2945_id);
+
+static struct i2c_driver ltc2945_driver = {
+ .driver = {
+ .name = "ltc2945",
+ },
+ .probe = ltc2945_probe,
+ .id_table = ltc2945_id,
+};
+
+module_i2c_driver(ltc2945_driver);
+
+MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
+MODULE_DESCRIPTION("LTC2945 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/ltc4215.c b/drivers/hwmon/ltc4215.c
index 8a142960d69e..c8a9bd9b050f 100644
--- a/drivers/hwmon/ltc4215.c
+++ b/drivers/hwmon/ltc4215.c
@@ -33,7 +33,7 @@ enum ltc4215_cmd {
};
struct ltc4215_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
bool valid;
@@ -45,8 +45,8 @@ struct ltc4215_data {
static struct ltc4215_data *ltc4215_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct ltc4215_data *data = i2c_get_clientdata(client);
+ struct ltc4215_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
s32 val;
int i;
@@ -214,7 +214,7 @@ static SENSOR_DEVICE_ATTR(in2_min_alarm, S_IRUGO, ltc4215_show_alarm, NULL,
* Finally, construct an array of pointers to members of the above objects,
* as required for sysfs_create_group()
*/
-static struct attribute *ltc4215_attributes[] = {
+static struct attribute *ltc4215_attrs[] = {
&sensor_dev_attr_curr1_input.dev_attr.attr,
&sensor_dev_attr_curr1_max_alarm.dev_attr.attr,
@@ -229,57 +229,33 @@ static struct attribute *ltc4215_attributes[] = {
NULL,
};
-
-static const struct attribute_group ltc4215_group = {
- .attrs = ltc4215_attributes,
-};
+ATTRIBUTE_GROUPS(ltc4215);
static int ltc4215_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
+ struct device *dev = &client->dev;
struct ltc4215_data *data;
- int ret;
+ struct device *hwmon_dev;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the LTC4215 chip */
i2c_smbus_write_byte_data(client, LTC4215_FAULT, 0x00);
- /* Register sysfs hooks */
- ret = sysfs_create_group(&client->dev.kobj, &ltc4215_group);
- if (ret)
- return ret;
-
- 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, &ltc4215_group);
- return ret;
-}
-
-static int ltc4215_remove(struct i2c_client *client)
-{
- struct ltc4215_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- sysfs_remove_group(&client->dev.kobj, &ltc4215_group);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ ltc4215_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id ltc4215_id[] = {
@@ -294,7 +270,6 @@ static struct i2c_driver ltc4215_driver = {
.name = "ltc4215",
},
.probe = ltc4215_probe,
- .remove = ltc4215_remove,
.id_table = ltc4215_id,
};
diff --git a/drivers/hwmon/ltc4222.c b/drivers/hwmon/ltc4222.c
new file mode 100644
index 000000000000..07c25653659f
--- /dev/null
+++ b/drivers/hwmon/ltc4222.c
@@ -0,0 +1,237 @@
+/*
+ * Driver for Linear Technology LTC4222 Dual Hot Swap controller
+ *
+ * Copyright (c) 2014 Guenter Roeck
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/bitops.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/jiffies.h>
+#include <linux/regmap.h>
+
+/* chip registers */
+
+#define LTC4222_CONTROL1 0xd0
+#define LTC4222_ALERT1 0xd1
+#define LTC4222_STATUS1 0xd2
+#define LTC4222_FAULT1 0xd3
+#define LTC4222_CONTROL2 0xd4
+#define LTC4222_ALERT2 0xd5
+#define LTC4222_STATUS2 0xd6
+#define LTC4222_FAULT2 0xd7
+#define LTC4222_SOURCE1 0xd8
+#define LTC4222_SOURCE2 0xda
+#define LTC4222_ADIN1 0xdc
+#define LTC4222_ADIN2 0xde
+#define LTC4222_SENSE1 0xe0
+#define LTC4222_SENSE2 0xe2
+#define LTC4222_ADC_CONTROL 0xe4
+
+/*
+ * Fault register bits
+ */
+#define FAULT_OV BIT(0)
+#define FAULT_UV BIT(1)
+#define FAULT_OC BIT(2)
+#define FAULT_POWER_BAD BIT(3)
+#define FAULT_FET_BAD BIT(5)
+
+/* Return the voltage from the given register in mV or mA */
+static int ltc4222_get_value(struct device *dev, u8 reg)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int val;
+ u8 buf[2];
+ int ret;
+
+ ret = regmap_bulk_read(regmap, reg, buf, 2);
+ if (ret < 0)
+ return ret;
+
+ val = ((buf[0] << 8) + buf[1]) >> 6;
+
+ switch (reg) {
+ case LTC4222_ADIN1:
+ case LTC4222_ADIN2:
+ /* 1.25 mV resolution. Convert to mV. */
+ val = DIV_ROUND_CLOSEST(val * 5, 4);
+ break;
+ case LTC4222_SOURCE1:
+ case LTC4222_SOURCE2:
+ /* 31.25 mV resolution. Convert to mV. */
+ val = DIV_ROUND_CLOSEST(val * 125, 4);
+ break;
+ case LTC4222_SENSE1:
+ case LTC4222_SENSE2:
+ /*
+ * 62.5 uV resolution. Convert to current as measured with
+ * an 1 mOhm sense resistor, in mA. If a different sense
+ * resistor is installed, calculate the actual current by
+ * dividing the reported current by the sense resistor value
+ * in mOhm.
+ */
+ val = DIV_ROUND_CLOSEST(val * 125, 2);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return val;
+}
+
+static ssize_t ltc4222_show_value(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int value;
+
+ value = ltc4222_get_value(dev, attr->index);
+ if (value < 0)
+ return value;
+ return snprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+static ssize_t ltc4222_show_bool(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(da);
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int fault;
+ int ret;
+
+ ret = regmap_read(regmap, attr->nr, &fault);
+ if (ret < 0)
+ return ret;
+ fault &= attr->index;
+ if (fault) /* Clear reported faults in chip register */
+ regmap_update_bits(regmap, attr->nr, attr->index, 0);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!fault);
+}
+
+/* Voltages */
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_SOURCE1);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_ADIN1);
+static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_SOURCE2);
+static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_ADIN2);
+
+/*
+ * Voltage alarms
+ * UV/OV faults are associated with the input voltage, and power bad and fet
+ * faults are associated with the output voltage.
+ */
+static SENSOR_DEVICE_ATTR_2(in1_min_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT1, FAULT_UV);
+static SENSOR_DEVICE_ATTR_2(in1_max_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT1, FAULT_OV);
+static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT1, FAULT_POWER_BAD | FAULT_FET_BAD);
+
+static SENSOR_DEVICE_ATTR_2(in3_min_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT2, FAULT_UV);
+static SENSOR_DEVICE_ATTR_2(in3_max_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT2, FAULT_OV);
+static SENSOR_DEVICE_ATTR_2(in4_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT2, FAULT_POWER_BAD | FAULT_FET_BAD);
+
+/* Current (via sense resistor) */
+static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_SENSE1);
+static SENSOR_DEVICE_ATTR(curr2_input, S_IRUGO, ltc4222_show_value, NULL,
+ LTC4222_SENSE2);
+
+/* Overcurrent alarm */
+static SENSOR_DEVICE_ATTR_2(curr1_max_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT1, FAULT_OC);
+static SENSOR_DEVICE_ATTR_2(curr2_max_alarm, S_IRUGO, ltc4222_show_bool, NULL,
+ LTC4222_FAULT2, FAULT_OC);
+
+static struct attribute *ltc4222_attrs[] = {
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+ &sensor_dev_attr_in3_input.dev_attr.attr,
+ &sensor_dev_attr_in3_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_in3_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_in4_input.dev_attr.attr,
+ &sensor_dev_attr_in4_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_curr1_input.dev_attr.attr,
+ &sensor_dev_attr_curr1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_curr2_input.dev_attr.attr,
+ &sensor_dev_attr_curr2_max_alarm.dev_attr.attr,
+
+ NULL,
+};
+ATTRIBUTE_GROUPS(ltc4222);
+
+static struct regmap_config ltc4222_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LTC4222_ADC_CONTROL,
+};
+
+static int ltc4222_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &ltc4222_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ /* Clear faults */
+ regmap_write(regmap, LTC4222_FAULT1, 0x00);
+ regmap_write(regmap, LTC4222_FAULT2, 0x00);
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ regmap,
+ ltc4222_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id ltc4222_id[] = {
+ {"ltc4222", 0},
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, ltc4222_id);
+
+static struct i2c_driver ltc4222_driver = {
+ .driver = {
+ .name = "ltc4222",
+ },
+ .probe = ltc4222_probe,
+ .id_table = ltc4222_id,
+};
+
+module_i2c_driver(ltc4222_driver);
+
+MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
+MODULE_DESCRIPTION("LTC4222 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/ltc4245.c b/drivers/hwmon/ltc4245.c
index d4172933ce4f..681b5b7b3c3b 100644
--- a/drivers/hwmon/ltc4245.c
+++ b/drivers/hwmon/ltc4245.c
@@ -95,7 +95,6 @@ static void ltc4245_update_gpios(struct device *dev)
* readings as stale by setting them to -EAGAIN
*/
if (time_after(jiffies, data->last_updated + 5 * HZ)) {
- dev_dbg(&client->dev, "Marking GPIOs invalid\n");
for (i = 0; i < ARRAY_SIZE(data->gpios); i++)
data->gpios[i] = -EAGAIN;
}
@@ -141,8 +140,6 @@ static struct ltc4245_data *ltc4245_update_device(struct device *dev)
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
- dev_dbg(&client->dev, "Starting ltc4245 update\n");
-
/* Read control registers -- 0x00 to 0x07 */
for (i = 0; i < ARRAY_SIZE(data->cregs); i++) {
val = i2c_smbus_read_byte_data(client, i);
@@ -470,19 +467,15 @@ static void ltc4245_sysfs_add_groups(struct ltc4245_data *data)
static bool ltc4245_use_extra_gpios(struct i2c_client *client)
{
struct ltc4245_platform_data *pdata = dev_get_platdata(&client->dev);
-#ifdef CONFIG_OF
struct device_node *np = client->dev.of_node;
-#endif
/* prefer platform data */
if (pdata)
return pdata->use_extra_gpios;
-#ifdef CONFIG_OF
/* fallback on OF */
if (of_find_property(np, "ltc4245,use-extra-gpios", NULL))
return true;
-#endif
return false;
}
@@ -512,24 +505,10 @@ static int ltc4245_probe(struct i2c_client *client,
/* Add sysfs hooks */
ltc4245_sysfs_add_groups(data);
- hwmon_dev = hwmon_device_register_with_groups(&client->dev,
- client->name, data,
- data->groups);
- if (IS_ERR(hwmon_dev))
- return PTR_ERR(hwmon_dev);
-
- i2c_set_clientdata(client, hwmon_dev);
-
- return 0;
-}
-
-static int ltc4245_remove(struct i2c_client *client)
-{
- struct device *hwmon_dev = i2c_get_clientdata(client);
-
- hwmon_device_unregister(hwmon_dev);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(&client->dev,
+ client->name, data,
+ data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id ltc4245_id[] = {
@@ -544,7 +523,6 @@ static struct i2c_driver ltc4245_driver = {
.name = "ltc4245",
},
.probe = ltc4245_probe,
- .remove = ltc4245_remove,
.id_table = ltc4245_id,
};
diff --git a/drivers/hwmon/ltc4260.c b/drivers/hwmon/ltc4260.c
new file mode 100644
index 000000000000..453a250d9df5
--- /dev/null
+++ b/drivers/hwmon/ltc4260.c
@@ -0,0 +1,200 @@
+/*
+ * Driver for Linear Technology LTC4260 I2C Positive Voltage Hot Swap Controller
+ *
+ * Copyright (c) 2014 Guenter Roeck
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/jiffies.h>
+#include <linux/regmap.h>
+
+/* chip registers */
+#define LTC4260_CONTROL 0x00
+#define LTC4260_ALERT 0x01
+#define LTC4260_STATUS 0x02
+#define LTC4260_FAULT 0x03
+#define LTC4260_SENSE 0x04
+#define LTC4260_SOURCE 0x05
+#define LTC4260_ADIN 0x06
+
+/*
+ * Fault register bits
+ */
+#define FAULT_OV (1 << 0)
+#define FAULT_UV (1 << 1)
+#define FAULT_OC (1 << 2)
+#define FAULT_POWER_BAD (1 << 3)
+#define FAULT_FET_SHORT (1 << 5)
+
+/* Return the voltage from the given register in mV or mA */
+static int ltc4260_get_value(struct device *dev, u8 reg)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(regmap, reg, &val);
+ if (ret < 0)
+ return ret;
+
+ switch (reg) {
+ case LTC4260_ADIN:
+ /* 10 mV resolution. Convert to mV. */
+ val = val * 10;
+ break;
+ case LTC4260_SOURCE:
+ /* 400 mV resolution. Convert to mV. */
+ val = val * 400;
+ break;
+ case LTC4260_SENSE:
+ /*
+ * 300 uV resolution. Convert to current as measured with
+ * an 1 mOhm sense resistor, in mA. If a different sense
+ * resistor is installed, calculate the actual current by
+ * dividing the reported current by the sense resistor value
+ * in mOhm.
+ */
+ val = val * 300;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return val;
+}
+
+static ssize_t ltc4260_show_value(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ int value;
+
+ value = ltc4260_get_value(dev, attr->index);
+ if (value < 0)
+ return value;
+ return snprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+static ssize_t ltc4260_show_bool(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int fault;
+ int ret;
+
+ ret = regmap_read(regmap, LTC4260_FAULT, &fault);
+ if (ret < 0)
+ return ret;
+
+ fault &= attr->index;
+ if (fault) /* Clear reported faults in chip register */
+ regmap_update_bits(regmap, LTC4260_FAULT, attr->index, 0);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", !!fault);
+}
+
+/* Voltages */
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, ltc4260_show_value, NULL,
+ LTC4260_SOURCE);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, ltc4260_show_value, NULL,
+ LTC4260_ADIN);
+
+/*
+ * Voltage alarms
+ * UV/OV faults are associated with the input voltage, and the POWER BAD and
+ * FET SHORT faults are associated with the output voltage.
+ */
+static SENSOR_DEVICE_ATTR(in1_min_alarm, S_IRUGO, ltc4260_show_bool, NULL,
+ FAULT_UV);
+static SENSOR_DEVICE_ATTR(in1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL,
+ FAULT_OV);
+static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, ltc4260_show_bool, NULL,
+ FAULT_POWER_BAD | FAULT_FET_SHORT);
+
+/* Current (via sense resistor) */
+static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ltc4260_show_value, NULL,
+ LTC4260_SENSE);
+
+/* Overcurrent alarm */
+static SENSOR_DEVICE_ATTR(curr1_max_alarm, S_IRUGO, ltc4260_show_bool, NULL,
+ FAULT_OC);
+
+static struct attribute *ltc4260_attrs[] = {
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in1_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_in1_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in2_alarm.dev_attr.attr,
+
+ &sensor_dev_attr_curr1_input.dev_attr.attr,
+ &sensor_dev_attr_curr1_max_alarm.dev_attr.attr,
+
+ NULL,
+};
+ATTRIBUTE_GROUPS(ltc4260);
+
+static struct regmap_config ltc4260_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LTC4260_ADIN,
+};
+
+static int ltc4260_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct regmap *regmap;
+
+ regmap = devm_regmap_init_i2c(client, &ltc4260_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ /* Clear faults */
+ regmap_write(regmap, LTC4260_FAULT, 0x00);
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ regmap,
+ ltc4260_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id ltc4260_id[] = {
+ {"ltc4260", 0},
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, ltc4260_id);
+
+static struct i2c_driver ltc4260_driver = {
+ .driver = {
+ .name = "ltc4260",
+ },
+ .probe = ltc4260_probe,
+ .id_table = ltc4260_id,
+};
+
+module_i2c_driver(ltc4260_driver);
+
+MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
+MODULE_DESCRIPTION("LTC4260 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/max1668.c b/drivers/hwmon/max1668.c
index 029b65e6c589..e3ed0a5b6d94 100644
--- a/drivers/hwmon/max1668.c
+++ b/drivers/hwmon/max1668.c
@@ -66,7 +66,8 @@ MODULE_PARM_DESC(read_only, "Don't set any values, read only mode");
enum chips { max1668, max1805, max1989 };
struct max1668_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
+ const struct attribute_group *groups[3];
enum chips type;
struct mutex update_lock;
@@ -82,8 +83,8 @@ struct max1668_data {
static struct max1668_data *max1668_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct max1668_data *data = i2c_get_clientdata(client);
+ struct max1668_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
struct max1668_data *ret = data;
s32 val;
int i;
@@ -205,8 +206,8 @@ static ssize_t set_temp_max(struct device *dev,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct max1668_data *data = i2c_get_clientdata(client);
+ struct max1668_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long temp;
int ret;
@@ -216,10 +217,11 @@ static ssize_t set_temp_max(struct device *dev,
mutex_lock(&data->update_lock);
data->temp_max[index] = clamp_val(temp/1000, -128, 127);
- if (i2c_smbus_write_byte_data(client,
+ ret = i2c_smbus_write_byte_data(client,
MAX1668_REG_LIMH_WR(index),
- data->temp_max[index]))
- count = -EIO;
+ data->temp_max[index]);
+ if (ret < 0)
+ count = ret;
mutex_unlock(&data->update_lock);
return count;
@@ -230,8 +232,8 @@ static ssize_t set_temp_min(struct device *dev,
const char *buf, size_t count)
{
int index = to_sensor_dev_attr(devattr)->index;
- struct i2c_client *client = to_i2c_client(dev);
- struct max1668_data *data = i2c_get_clientdata(client);
+ struct max1668_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
long temp;
int ret;
@@ -241,10 +243,11 @@ static ssize_t set_temp_min(struct device *dev,
mutex_lock(&data->update_lock);
data->temp_min[index] = clamp_val(temp/1000, -128, 127);
- if (i2c_smbus_write_byte_data(client,
+ ret = i2c_smbus_write_byte_data(client,
MAX1668_REG_LIML_WR(index),
- data->temp_min[index]))
- count = -EIO;
+ data->temp_min[index]);
+ if (ret < 0)
+ count = ret;
mutex_unlock(&data->update_lock);
return count;
@@ -405,60 +408,29 @@ static int max1668_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
struct max1668_data *data;
- int err;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- data = devm_kzalloc(&client->dev, sizeof(struct max1668_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct max1668_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
data->type = id->driver_data;
mutex_init(&data->update_lock);
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &max1668_group_common);
- if (err)
- return err;
-
- if (data->type == max1668 || data->type == max1989) {
- err = sysfs_create_group(&client->dev.kobj,
- &max1668_group_unique);
- if (err)
- goto error_sysrem0;
- }
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto error_sysrem1;
- }
-
- return 0;
-
-error_sysrem1:
+ /* sysfs hooks */
+ data->groups[0] = &max1668_group_common;
if (data->type == max1668 || data->type == max1989)
- sysfs_remove_group(&client->dev.kobj, &max1668_group_unique);
-error_sysrem0:
- sysfs_remove_group(&client->dev.kobj, &max1668_group_common);
- return err;
-}
-
-static int max1668_remove(struct i2c_client *client)
-{
- struct max1668_data *data = i2c_get_clientdata(client);
+ data->groups[1] = &max1668_group_unique;
- hwmon_device_unregister(data->hwmon_dev);
- if (data->type == max1668 || data->type == max1989)
- sysfs_remove_group(&client->dev.kobj, &max1668_group_unique);
-
- sysfs_remove_group(&client->dev.kobj, &max1668_group_common);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
static const struct i2c_device_id max1668_id[] = {
@@ -476,7 +448,6 @@ static struct i2c_driver max1668_driver = {
.name = "max1668",
},
.probe = max1668_probe,
- .remove = max1668_remove,
.id_table = max1668_id,
.detect = max1668_detect,
.address_list = max1668_addr_list,
diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
index 066e587a18a5..70650de2cbd1 100644
--- a/drivers/hwmon/max6639.c
+++ b/drivers/hwmon/max6639.c
@@ -80,7 +80,7 @@ static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 };
* Client data (each client gets its own)
*/
struct max6639_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -104,8 +104,8 @@ struct max6639_data {
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 *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
struct max6639_data *ret = data;
int i;
int status_reg;
@@ -191,9 +191,8 @@ static ssize_t show_temp_fault(struct device *dev,
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);
+ struct max6639_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", (data->temp_therm[attr->index] * 1000));
}
@@ -202,9 +201,9 @@ 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);
+ struct max6639_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int res;
@@ -224,9 +223,8 @@ static ssize_t set_temp_max(struct device *dev,
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);
+ struct max6639_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", (data->temp_alert[attr->index] * 1000));
}
@@ -235,9 +233,9 @@ 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);
+ struct max6639_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int res;
@@ -258,9 +256,8 @@ 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);
+ struct max6639_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", (data->temp_ot[attr->index] * 1000));
}
@@ -269,9 +266,9 @@ 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);
+ struct max6639_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int res;
@@ -291,9 +288,8 @@ static ssize_t set_temp_emergency(struct device *dev,
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);
+ struct max6639_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%d\n", data->pwm[attr->index] * 255 / 120);
}
@@ -302,9 +298,9 @@ 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);
+ struct max6639_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long val;
int res;
@@ -378,7 +374,7 @@ 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[] = {
+static struct attribute *max6639_attrs[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp1_fault.dev_attr.attr,
@@ -403,10 +399,7 @@ static struct attribute *max6639_attributes[] = {
&sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
NULL
};
-
-static const struct attribute_group max6639_group = {
- .attrs = max6639_attributes,
-};
+ATTRIBUTE_GROUPS(max6639);
/*
* returns respective index in rpm_ranges table
@@ -424,9 +417,9 @@ static int rpm_range_to_reg(int range)
return 1; /* default: 4000 RPM */
}
-static int max6639_init_client(struct i2c_client *client)
+static int max6639_init_client(struct i2c_client *client,
+ struct max6639_data *data)
{
- struct max6639_data *data = i2c_get_clientdata(client);
struct max6639_platform_data *max6639_info =
dev_get_platdata(&client->dev);
int i;
@@ -545,50 +538,27 @@ static int max6639_detect(struct i2c_client *client,
static int max6639_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct max6639_data *data;
+ struct device *hwmon_dev;
int err;
- data = devm_kzalloc(&client->dev, sizeof(struct max6639_data),
- GFP_KERNEL);
+ data = devm_kzalloc(dev, sizeof(struct max6639_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- i2c_set_clientdata(client, data);
+ data->client = client;
mutex_init(&data->update_lock);
/* Initialize the max6639 chip */
- err = max6639_init_client(client);
+ err = max6639_init_client(client, data);
if (err < 0)
return err;
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &max6639_group);
- if (err)
- return err;
-
- 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);
- 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);
-
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ max6639_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
#ifdef CONFIG_PM_SLEEP
@@ -622,9 +592,7 @@ static const struct i2c_device_id max6639_id[] = {
MODULE_DEVICE_TABLE(i2c, max6639_id);
-static const struct dev_pm_ops max6639_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(max6639_suspend, max6639_resume)
-};
+static SIMPLE_DEV_PM_OPS(max6639_pm_ops, max6639_suspend, max6639_resume);
static struct i2c_driver max6639_driver = {
.class = I2C_CLASS_HWMON,
@@ -633,7 +601,6 @@ static struct i2c_driver max6639_driver = {
.pm = &max6639_pm_ops,
},
.probe = max6639_probe,
- .remove = max6639_remove,
.id_table = max6639_id,
.detect = max6639_detect,
.address_list = normal_i2c,
diff --git a/drivers/hwmon/max6650.c b/drivers/hwmon/max6650.c
index 0cafc390db4d..162a520f4bd6 100644
--- a/drivers/hwmon/max6650.c
+++ b/drivers/hwmon/max6650.c
@@ -105,38 +105,13 @@ module_param(clock, int, S_IRUGO);
#define DIV_FROM_REG(reg) (1 << (reg & 7))
-static int max6650_probe(struct i2c_client *client,
- const struct i2c_device_id *id);
-static int max6650_init_client(struct i2c_client *client);
-static int max6650_remove(struct i2c_client *client);
-static struct max6650_data *max6650_update_device(struct device *dev);
-
-/*
- * Driver data (common to all clients)
- */
-
-static const struct i2c_device_id max6650_id[] = {
- { "max6650", 1 },
- { "max6651", 4 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, max6650_id);
-
-static struct i2c_driver max6650_driver = {
- .driver = {
- .name = "max6650",
- },
- .probe = max6650_probe,
- .remove = max6650_remove,
- .id_table = max6650_id,
-};
-
/*
* Client data (each client gets its own)
*/
struct max6650_data {
- struct device *hwmon_dev;
+ struct i2c_client *client;
+ const struct attribute_group *groups[3];
struct mutex update_lock;
int nr_fans;
char valid; /* zero until following fields are valid */
@@ -151,6 +126,51 @@ struct max6650_data {
u8 alarm;
};
+static const u8 tach_reg[] = {
+ MAX6650_REG_TACH0,
+ MAX6650_REG_TACH1,
+ MAX6650_REG_TACH2,
+ MAX6650_REG_TACH3,
+};
+
+static struct max6650_data *max6650_update_device(struct device *dev)
+{
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ data->speed = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_SPEED);
+ data->config = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_CONFIG);
+ for (i = 0; i < data->nr_fans; i++) {
+ data->tach[i] = i2c_smbus_read_byte_data(client,
+ tach_reg[i]);
+ }
+ data->count = i2c_smbus_read_byte_data(client,
+ MAX6650_REG_COUNT);
+ data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC);
+
+ /*
+ * Alarms are cleared on read in case the condition that
+ * caused the alarm is removed. Keep the value latched here
+ * for providing the register through different alarm files.
+ */
+ data->alarm |= i2c_smbus_read_byte_data(client,
+ MAX6650_REG_ALARM);
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
static ssize_t get_fan(struct device *dev, struct device_attribute *devattr,
char *buf)
{
@@ -235,8 +255,8 @@ static ssize_t get_target(struct device *dev, struct device_attribute *devattr,
static ssize_t set_target(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int kscale, ktach;
unsigned long rpm;
int err;
@@ -304,8 +324,8 @@ static ssize_t get_pwm(struct device *dev, struct device_attribute *devattr,
static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long pwm;
int err;
@@ -350,8 +370,8 @@ static ssize_t get_enable(struct device *dev, struct device_attribute *devattr,
static ssize_t set_enable(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
int max6650_modes[3] = {0, 3, 2};
unsigned long mode;
int err;
@@ -400,8 +420,8 @@ static ssize_t get_div(struct device *dev, struct device_attribute *devattr,
static ssize_t set_div(struct device *dev, struct device_attribute *devattr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
unsigned long div;
int err;
@@ -446,7 +466,7 @@ static ssize_t get_alarm(struct device *dev, struct device_attribute *devattr,
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max6650_data *data = max6650_update_device(dev);
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = data->client;
int alarm = 0;
if (data->alarm & attr->index) {
@@ -484,7 +504,8 @@ static umode_t max6650_attrs_visible(struct kobject *kobj, struct attribute *a,
int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
- struct i2c_client *client = to_i2c_client(dev);
+ struct max6650_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
u8 alarm_en = i2c_smbus_read_byte_data(client, MAX6650_REG_ALARM_EN);
struct device_attribute *devattr;
@@ -519,7 +540,7 @@ static struct attribute *max6650_attrs[] = {
NULL
};
-static struct attribute_group max6650_attr_grp = {
+static const struct attribute_group max6650_group = {
.attrs = max6650_attrs,
.is_visible = max6650_attrs_visible,
};
@@ -531,7 +552,7 @@ static struct attribute *max6651_attrs[] = {
NULL
};
-static const struct attribute_group max6651_attr_grp = {
+static const struct attribute_group max6651_group = {
.attrs = max6651_attrs,
};
@@ -539,74 +560,17 @@ static const struct attribute_group max6651_attr_grp = {
* Real code
*/
-static int max6650_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct max6650_data *data;
- int err;
-
- data = devm_kzalloc(&client->dev, sizeof(struct max6650_data),
- GFP_KERNEL);
- if (!data) {
- dev_err(&client->dev, "out of memory.\n");
- return -ENOMEM;
- }
-
- i2c_set_clientdata(client, data);
- mutex_init(&data->update_lock);
- data->nr_fans = id->driver_data;
-
- /*
- * Initialize the max6650 chip
- */
- err = max6650_init_client(client);
- if (err)
- return err;
-
- err = sysfs_create_group(&client->dev.kobj, &max6650_attr_grp);
- if (err)
- return err;
- /* 3 additional fan inputs for the MAX6651 */
- if (data->nr_fans == 4) {
- err = sysfs_create_group(&client->dev.kobj, &max6651_attr_grp);
- if (err)
- goto err_remove;
- }
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (!IS_ERR(data->hwmon_dev))
- return 0;
-
- err = PTR_ERR(data->hwmon_dev);
- dev_err(&client->dev, "error registering hwmon device.\n");
- if (data->nr_fans == 4)
- sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
-err_remove:
- sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
- return err;
-}
-
-static int max6650_remove(struct i2c_client *client)
+static int max6650_init_client(struct max6650_data *data,
+ struct i2c_client *client)
{
- struct max6650_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- if (data->nr_fans == 4)
- sysfs_remove_group(&client->dev.kobj, &max6651_attr_grp);
- sysfs_remove_group(&client->dev.kobj, &max6650_attr_grp);
- return 0;
-}
-
-static int max6650_init_client(struct i2c_client *client)
-{
- struct max6650_data *data = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
int config;
int err = -EIO;
config = i2c_smbus_read_byte_data(client, MAX6650_REG_CONFIG);
if (config < 0) {
- dev_err(&client->dev, "Error reading config, aborting.\n");
+ dev_err(dev, "Error reading config, aborting.\n");
return err;
}
@@ -620,11 +584,11 @@ static int max6650_init_client(struct i2c_client *client)
config |= MAX6650_CFG_V12;
break;
default:
- dev_err(&client->dev, "illegal value for fan_voltage (%d)\n",
+ dev_err(dev, "illegal value for fan_voltage (%d)\n",
fan_voltage);
}
- dev_info(&client->dev, "Fan voltage is set to %dV.\n",
+ dev_info(dev, "Fan voltage is set to %dV.\n",
(config & MAX6650_CFG_V12) ? 12 : 5);
switch (prescaler) {
@@ -650,11 +614,10 @@ static int max6650_init_client(struct i2c_client *client)
| MAX6650_CFG_PRESCALER_16;
break;
default:
- dev_err(&client->dev, "illegal value for prescaler (%d)\n",
- prescaler);
+ dev_err(dev, "illegal value for prescaler (%d)\n", prescaler);
}
- dev_info(&client->dev, "Prescaler is set to %d.\n",
+ dev_info(dev, "Prescaler is set to %d.\n",
1 << (config & MAX6650_CFG_PRESCALER_MASK));
/*
@@ -664,17 +627,17 @@ static int max6650_init_client(struct i2c_client *client)
*/
if ((config & MAX6650_CFG_MODE_MASK) == MAX6650_CFG_MODE_OFF) {
- dev_dbg(&client->dev, "Change mode to open loop, full off.\n");
+ dev_dbg(dev, "Change mode to open loop, full off.\n");
config = (config & ~MAX6650_CFG_MODE_MASK)
| MAX6650_CFG_MODE_OPEN_LOOP;
if (i2c_smbus_write_byte_data(client, MAX6650_REG_DAC, 255)) {
- dev_err(&client->dev, "DAC write error, aborting.\n");
+ dev_err(dev, "DAC write error, aborting.\n");
return err;
}
}
if (i2c_smbus_write_byte_data(client, MAX6650_REG_CONFIG, config)) {
- dev_err(&client->dev, "Config write error, aborting.\n");
+ dev_err(dev, "Config write error, aborting.\n");
return err;
}
@@ -684,51 +647,55 @@ static int max6650_init_client(struct i2c_client *client)
return 0;
}
-static const u8 tach_reg[] = {
- MAX6650_REG_TACH0,
- MAX6650_REG_TACH1,
- MAX6650_REG_TACH2,
- MAX6650_REG_TACH3,
-};
-
-static struct max6650_data *max6650_update_device(struct device *dev)
+static int max6650_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- int i;
- struct i2c_client *client = to_i2c_client(dev);
- struct max6650_data *data = i2c_get_clientdata(client);
-
- mutex_lock(&data->update_lock);
+ struct device *dev = &client->dev;
+ struct max6650_data *data;
+ struct device *hwmon_dev;
+ int err;
- if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
- data->speed = i2c_smbus_read_byte_data(client,
- MAX6650_REG_SPEED);
- data->config = i2c_smbus_read_byte_data(client,
- MAX6650_REG_CONFIG);
- for (i = 0; i < data->nr_fans; i++) {
- data->tach[i] = i2c_smbus_read_byte_data(client,
- tach_reg[i]);
- }
- data->count = i2c_smbus_read_byte_data(client,
- MAX6650_REG_COUNT);
- data->dac = i2c_smbus_read_byte_data(client, MAX6650_REG_DAC);
+ data = devm_kzalloc(dev, sizeof(struct max6650_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
- /*
- * Alarms are cleared on read in case the condition that
- * caused the alarm is removed. Keep the value latched here
- * for providing the register through different alarm files.
- */
- data->alarm |= i2c_smbus_read_byte_data(client,
- MAX6650_REG_ALARM);
+ data->client = client;
+ mutex_init(&data->update_lock);
+ data->nr_fans = id->driver_data;
- data->last_updated = jiffies;
- data->valid = 1;
- }
+ /*
+ * Initialize the max6650 chip
+ */
+ err = max6650_init_client(data, client);
+ if (err)
+ return err;
- mutex_unlock(&data->update_lock);
+ data->groups[0] = &max6650_group;
+ /* 3 additional fan inputs for the MAX6651 */
+ if (data->nr_fans == 4)
+ data->groups[1] = &max6651_group;
- return data;
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev,
+ client->name, data,
+ data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
+static const struct i2c_device_id max6650_id[] = {
+ { "max6650", 1 },
+ { "max6651", 4 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max6650_id);
+
+static struct i2c_driver max6650_driver = {
+ .driver = {
+ .name = "max6650",
+ },
+ .probe = max6650_probe,
+ .id_table = max6650_id,
+};
+
module_i2c_driver(max6650_driver);
MODULE_AUTHOR("Hans J. Koch");
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index de3c152a1d9a..e24ed521051a 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -1,9 +1,9 @@
/*
* Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880,
- * and LTC3883
+ * LTC3883, and LTM4676
*
* Copyright (c) 2011 Ericsson AB.
- * Copyright (c) 2013 Guenter Roeck
+ * Copyright (c) 2013, 2014 Guenter Roeck
*
* 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
@@ -14,10 +14,6 @@
* 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>
@@ -28,7 +24,7 @@
#include <linux/i2c.h>
#include "pmbus.h"
-enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
+enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 };
/* Common for all chips */
#define LTC2978_MFR_VOUT_PEAK 0xdd
@@ -45,7 +41,7 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
#define LTC2974_MFR_IOUT_PEAK 0xd7
#define LTC2974_MFR_IOUT_MIN 0xd8
-/* LTC3880 and LTC3883 */
+/* LTC3880, LTC3883, and LTM4676 */
#define LTC3880_MFR_IOUT_PEAK 0xd7
#define LTC3880_MFR_CLEAR_PEAKS 0xe3
#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
@@ -53,7 +49,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
/* LTC3883 only */
#define LTC3883_MFR_IIN_PEAK 0xe1
-#define LTC2974_ID 0x0212
+#define LTC2974_ID_REV1 0x0212
+#define LTC2974_ID_REV2 0x0213
#define LTC2977_ID 0x0130
#define LTC2978_ID_REV1 0x0121
#define LTC2978_ID_REV2 0x0122
@@ -62,6 +59,8 @@ enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883 };
#define LTC3880_ID_MASK 0xff00
#define LTC3883_ID 0x4300
#define LTC3883_ID_MASK 0xff00
+#define LTM4676_ID 0x4480 /* datasheet claims 0x440X */
+#define LTM4676_ID_MASK 0xfff0
#define LTC2974_NUM_PAGES 4
#define LTC2978_NUM_PAGES 8
@@ -370,6 +369,7 @@ static const struct i2c_device_id ltc2978_id[] = {
{"ltc2978", ltc2978},
{"ltc3880", ltc3880},
{"ltc3883", ltc3883},
+ {"ltm4676", ltm4676},
{}
};
MODULE_DEVICE_TABLE(i2c, ltc2978_id);
@@ -394,7 +394,7 @@ static int ltc2978_probe(struct i2c_client *client,
if (chip_id < 0)
return chip_id;
- if (chip_id == LTC2974_ID) {
+ if (chip_id == LTC2974_ID_REV1 || chip_id == LTC2974_ID_REV2) {
data->id = ltc2974;
} else if (chip_id == LTC2977_ID) {
data->id = ltc2977;
@@ -405,6 +405,8 @@ static int ltc2978_probe(struct i2c_client *client,
data->id = ltc3880;
} else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) {
data->id = ltc3883;
+ } else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID) {
+ data->id = ltm4676;
} else {
dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
return -ENODEV;
@@ -458,6 +460,7 @@ static int ltc2978_probe(struct i2c_client *client,
}
break;
case ltc3880:
+ case ltm4676:
info->read_word_data = ltc3880_read_word_data;
info->pages = LTC3880_NUM_PAGES;
info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
@@ -500,5 +503,5 @@ static struct i2c_driver ltc2978_driver = {
module_i2c_driver(ltc2978_driver);
MODULE_AUTHOR("Guenter Roeck");
-MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, and LTC3883");
+MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, LTC3883, and LTM4676");
MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/smm665.c b/drivers/hwmon/smm665.c
index d9e1b7de78da..4ef5802df6d8 100644
--- a/drivers/hwmon/smm665.c
+++ b/drivers/hwmon/smm665.c
@@ -222,7 +222,7 @@ static int smm665_read_adc(struct smm665_data *data, int adc)
rv = i2c_smbus_read_word_swapped(client, 0);
if (rv < 0) {
dev_dbg(&client->dev, "Failed to read ADC value: error %d", rv);
- return -1;
+ return rv;
}
/*
* Validate/verify readback adc channel (in bit 11..14).
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 21:22:24 +0000