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Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/…
…kernel/git/groeck/linux-staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (26 commits) hwmon: (w83627ehf) Better fix for negative temperature values hwmon: (w83627ehf) Uninline is_word_sized hwmon: (lm75) Document why clones are not detected hwmon: (w83627ehf) Move fan pins check to a separate function hwmon: (w83627ehf) Skip reading unused voltage registers hwmon: (lm75) Add support for Analog Devices ADT75 hwmon: (pmbus_core) Simplify sign extensions hwmon: (pmbus) Add support for Lineage Power DC-DC converters hwmon: (pmbus/ltc2978) Add support for LTC3880 to LTC2978 driver hwmon: (pmbus/ltc2978) Explicit driver for LTC2978 hwmon: (pmbus) Add support for TEMP2 peak attributes hwmon: AD7314 driver (ported from IIO) hwmon: (pmbus) Add support for Intersil power management chips hwmon: (pmbus) Always call _pmbus_read_byte in core driver hwmon: (pmbus) Replace EINVAL return codes with more appropriate errors hwmon: (pmbus) Provide more documentation hwmon/f71882fg: Make the decision wether to register fan attr. per fan hwmon/f71882fg: Add a f71882fg_create_fan_sysfs_files helper function hwmon/f71882fg: Make all fan/pwm attr tables 2 dimensional hwmon: (exynos4_tmu) Remove IRQF_DISABLED ...
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| Kernel driver ad7314 | ||
| ==================== | ||
|
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| Supported chips: | ||
| * Analog Devices AD7314 | ||
| Prefix: 'ad7314' | ||
| Datasheet: Publicly available at Analog Devices website. | ||
| * Analog Devices ADT7301 | ||
| Prefix: 'adt7301' | ||
| Datasheet: Publicly available at Analog Devices website. | ||
| * Analog Devices ADT7302 | ||
| Prefix: 'adt7302' | ||
| Datasheet: Publicly available at Analog Devices website. | ||
|
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| Description | ||
| ----------- | ||
|
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| Driver supports the above parts. The ad7314 has a 10 bit | ||
| sensor with 1lsb = 0.25 degrees centigrade. The adt7301 and | ||
| adt7302 have 14 bit sensors with 1lsb = 0.03125 degrees centigrade. | ||
|
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| Notes | ||
| ----- | ||
|
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| Currently power down mode is not supported. |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,81 @@ | ||
| Kernel driver exynos4_tmu | ||
| ================= | ||
|
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| Supported chips: | ||
| * ARM SAMSUNG EXYNOS4 series of SoC | ||
| Prefix: 'exynos4-tmu' | ||
| Datasheet: Not publicly available | ||
|
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| Authors: Donggeun Kim <dg77.kim@samsung.com> | ||
|
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| Description | ||
| ----------- | ||
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| This driver allows to read temperature inside SAMSUNG EXYNOS4 series of SoC. | ||
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| The chip only exposes the measured 8-bit temperature code value | ||
| through a register. | ||
| Temperature can be taken from the temperature code. | ||
| There are three equations converting from temperature to temperature code. | ||
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| The three equations are: | ||
| 1. Two point trimming | ||
| Tc = (T - 25) * (TI2 - TI1) / (85 - 25) + TI1 | ||
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| 2. One point trimming | ||
| Tc = T + TI1 - 25 | ||
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| 3. No trimming | ||
| Tc = T + 50 | ||
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| Tc: Temperature code, T: Temperature, | ||
| TI1: Trimming info for 25 degree Celsius (stored at TRIMINFO register) | ||
| Temperature code measured at 25 degree Celsius which is unchanged | ||
| TI2: Trimming info for 85 degree Celsius (stored at TRIMINFO register) | ||
| Temperature code measured at 85 degree Celsius which is unchanged | ||
|
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| TMU(Thermal Management Unit) in EXYNOS4 generates interrupt | ||
| when temperature exceeds pre-defined levels. | ||
| The maximum number of configurable threshold is four. | ||
| The threshold levels are defined as follows: | ||
| Level_0: current temperature > trigger_level_0 + threshold | ||
| Level_1: current temperature > trigger_level_1 + threshold | ||
| Level_2: current temperature > trigger_level_2 + threshold | ||
| Level_3: current temperature > trigger_level_3 + threshold | ||
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| The threshold and each trigger_level are set | ||
| through the corresponding registers. | ||
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| When an interrupt occurs, this driver notify user space of | ||
| one of four threshold levels for the interrupt | ||
| through kobject_uevent_env and sysfs_notify functions. | ||
| Although an interrupt condition for level_0 can be set, | ||
| it is not notified to user space through sysfs_notify function. | ||
|
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| Sysfs Interface | ||
| --------------- | ||
| name name of the temperature sensor | ||
| RO | ||
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| temp1_input temperature | ||
| RO | ||
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| temp1_max temperature for level_1 interrupt | ||
| RO | ||
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| temp1_crit temperature for level_2 interrupt | ||
| RO | ||
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| temp1_emergency temperature for level_3 interrupt | ||
| RO | ||
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| temp1_max_alarm alarm for level_1 interrupt | ||
| RO | ||
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| temp1_crit_alarm | ||
| alarm for level_2 interrupt | ||
| RO | ||
|
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| temp1_emergency_alarm | ||
| alarm for level_3 interrupt | ||
| RO |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,103 @@ | ||
| Kernel driver ltc2978 | ||
| ===================== | ||
|
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| Supported chips: | ||
| * Linear Technology LTC2978 | ||
| Prefix: 'ltc2978' | ||
| Addresses scanned: - | ||
| Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf | ||
| * Linear Technology LTC3880 | ||
| Prefix: 'ltc3880' | ||
| Addresses scanned: - | ||
| Datasheet: http://cds.linear.com/docs/Datasheet/3880f.pdf | ||
|
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| Author: Guenter Roeck <guenter.roeck@ericsson.com> | ||
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| Description | ||
| ----------- | ||
|
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| The LTC2978 is an octal power supply monitor, supervisor, sequencer and | ||
| margin controller. The LTC3880 is a dual, PolyPhase DC/DC synchronous | ||
| step-down switching regulator controller. | ||
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| Usage Notes | ||
| ----------- | ||
|
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| This driver does not probe for PMBus devices. You will have to instantiate | ||
| devices explicitly. | ||
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| Example: the following commands will load the driver for an LTC2978 at address | ||
| 0x60 on I2C bus #1: | ||
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| # modprobe ltc2978 | ||
| # echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device | ||
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| Sysfs attributes | ||
| ---------------- | ||
|
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| in1_label "vin" | ||
| in1_input Measured input voltage. | ||
| in1_min Minimum input voltage. | ||
| in1_max Maximum input voltage. | ||
| in1_lcrit Critical minimum input voltage. | ||
| in1_crit Critical maximum input voltage. | ||
| in1_min_alarm Input voltage low alarm. | ||
| in1_max_alarm Input voltage high alarm. | ||
| in1_lcrit_alarm Input voltage critical low alarm. | ||
| in1_crit_alarm Input voltage critical high alarm. | ||
| in1_lowest Lowest input voltage. LTC2978 only. | ||
| in1_highest Highest input voltage. | ||
| in1_reset_history Reset history. Writing into this attribute will reset | ||
| history for all attributes. | ||
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| in[2-9]_label "vout[1-8]". Channels 3 to 9 on LTC2978 only. | ||
| in[2-9]_input Measured output voltage. | ||
| in[2-9]_min Minimum output voltage. | ||
| in[2-9]_max Maximum output voltage. | ||
| in[2-9]_lcrit Critical minimum output voltage. | ||
| in[2-9]_crit Critical maximum output voltage. | ||
| in[2-9]_min_alarm Output voltage low alarm. | ||
| in[2-9]_max_alarm Output voltage high alarm. | ||
| in[2-9]_lcrit_alarm Output voltage critical low alarm. | ||
| in[2-9]_crit_alarm Output voltage critical high alarm. | ||
| in[2-9]_lowest Lowest output voltage. LTC2978 only. | ||
| in[2-9]_highest Lowest output voltage. | ||
| in[2-9]_reset_history Reset history. Writing into this attribute will reset | ||
| history for all attributes. | ||
|
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| temp[1-3]_input Measured temperature. | ||
| On LTC2978, only one temperature measurement is | ||
| supported and reflects the internal temperature. | ||
| On LTC3880, temp1 and temp2 report external | ||
| temperatures, and temp3 reports the internal | ||
| temperature. | ||
| temp[1-3]_min Mimimum temperature. | ||
| temp[1-3]_max Maximum temperature. | ||
| temp[1-3]_lcrit Critical low temperature. | ||
| temp[1-3]_crit Critical high temperature. | ||
| temp[1-3]_min_alarm Chip temperature low alarm. | ||
| temp[1-3]_max_alarm Chip temperature high alarm. | ||
| temp[1-3]_lcrit_alarm Chip temperature critical low alarm. | ||
| temp[1-3]_crit_alarm Chip temperature critical high alarm. | ||
| temp[1-3]_lowest Lowest measured temperature. LTC2978 only. | ||
| temp[1-3]_highest Highest measured temperature. | ||
| temp[1-3]_reset_history Reset history. Writing into this attribute will reset | ||
| history for all attributes. | ||
|
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| power[1-2]_label "pout[1-2]". LTC3880 only. | ||
| power[1-2]_input Measured power. | ||
|
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| curr1_label "iin". LTC3880 only. | ||
| curr1_input Measured input current. | ||
| curr1_max Maximum input current. | ||
| curr1_max_alarm Input current high alarm. | ||
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| curr[2-3]_label "iout[1-2]". LTC3880 only. | ||
| curr[2-3]_input Measured input current. | ||
| curr[2-3]_max Maximum input current. | ||
| curr[2-3]_crit Critical input current. | ||
| curr[2-3]_max_alarm Input current high alarm. | ||
| curr[2-3]_crit_alarm Input current critical high alarm. |
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