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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-21 10:37:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-21 10:37:25 -0700
commit31f6765266417c0d99f0e922fe82848a7c9c2ae9 (patch)
tree2d5914dac0a918baad37decd3845b8c206051420 /Documentation/hwmon/max34440
parentd15d76448bb58c7832e954b6a8f1e301720b7866 (diff)
parent312869ec935ab3bb67b7ba641a7d11230555aff5 (diff)
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon changes for v3.4 from Guenter Roeck: "Mostly cleanup. No new drivers this time around, but support for several chips added to existing drivers: TPS40400, TPS40422, MTD040, MAX34446, ZL9101M, ZL9117M, and LM96080. Also, added watchdog support for SCH56xx, and additional attributes for a couple of drivers." * tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (137 commits) hwmon: (sch56xx) Add support for the integrated watchdog (v2) hwmon: (w83627ehf) Add support for temperature offset registers hwmon: (jc42) Remove unnecessary device IDs hwmon: (zl6100) Add support for ZL9101M and ZL9117M hwmon: (adm1275) Add support for ADM1075 hwmon: (max34440) Add support for MAX34446 hwmon: (pmbus) Add more virtual registers hwmon: (pmbus) Add support for Lineage Power MDT040 hwmon: (pmbus) Add support for TI TPS40400 and TPS40422 hwmon: (max34440) Add support for 'lowest' output voltage attribute hwmon: (jc42) Convert to use devm_kzalloc hwmon: (max16065) Convert to use devm_kzalloc hwmon: (smm665) Convert to use devm_kzalloc hwmon: (ltc4261) Convert to use devm_kzalloc hwmon: (pmbus) Simplify remove functions hwmon: (pmbus) Convert pmbus drivers to use devm_kzalloc hwmon: (lineage-pem) Convert to use devm_kzalloc hwmon: (hwmon-vid) Fix checkpatch issues hwmon: (hwmon-vid) Add new entries to VRM model table hwmon: (lm80) Add detection of NatSemi/TI LM96080 ...
Diffstat (limited to 'Documentation/hwmon/max34440')
-rw-r--r--Documentation/hwmon/max3444030
1 files changed, 28 insertions, 2 deletions
diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440
index 19743919ea56..04482226db20 100644
--- a/Documentation/hwmon/max34440
+++ b/Documentation/hwmon/max34440
@@ -11,6 +11,11 @@ Supported chips:
Prefixes: 'max34441'
Addresses scanned: -
Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
+ * Maxim MAX34446
+ PMBus Power-Supply Data Logger
+ Prefixes: 'max34446'
+ Addresses scanned: -
+ Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34446.pdf
Author: Guenter Roeck <guenter.roeck@ericsson.com>
@@ -19,8 +24,8 @@ Description
-----------
This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
-Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
-and Intelligent Fan Controller.
+Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
+and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus for details on PMBus client drivers.
@@ -33,6 +38,13 @@ This driver does not auto-detect devices. You will have to instantiate the
devices explicitly. Please see Documentation/i2c/instantiating-devices for
details.
+For MAX34446, the value of the currX_crit attribute determines if current or
+voltage measurement is enabled for a given channel. Voltage measurement is
+enabled if currX_crit is set to 0; current measurement is enabled if the
+attribute is set to a positive value. Power measurement is only enabled if
+channel 1 (3) is configured for voltage measurement, and channel 2 (4) is
+configured for current measurement.
+
Platform data support
---------------------
@@ -56,19 +68,31 @@ in[1-6]_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
in[1-6]_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
in[1-6]_lcrit_alarm Voltage critical low alarm. From VOLTAGE_UV_FAULT status.
in[1-6]_crit_alarm Voltage critical high alarm. From VOLTAGE_OV_FAULT status.
+in[1-6]_lowest Historical minimum voltage.
in[1-6]_highest Historical maximum voltage.
in[1-6]_reset_history Write any value to reset history.
+ MAX34446 only supports in[1-4].
+
curr[1-6]_label "iout[1-6]".
curr[1-6]_input Measured current. From READ_IOUT register.
curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
+curr[1-4]_average Historical average current (MAX34446 only).
curr[1-6]_highest Historical maximum current.
curr[1-6]_reset_history Write any value to reset history.
in6 and curr6 attributes only exist for MAX34440.
+ MAX34446 only supports curr[1-4].
+
+power[1,3]_label "pout[1,3]"
+power[1,3]_input Measured power.
+power[1,3]_average Historical average power.
+power[1,3]_highest Historical maximum power.
+
+ Power attributes only exist for MAX34446.
temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
temp1 is the chip's internal temperature. temp2..temp5
@@ -79,7 +103,9 @@ temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
temp[1-8]_max_alarm Temperature high alarm.
temp[1-8]_crit_alarm Temperature critical high alarm.
+temp[1-8]_average Historical average temperature (MAX34446 only).
temp[1-8]_highest Historical maximum temperature.
temp[1-8]_reset_history Write any value to reset history.
temp7 and temp8 attributes only exist for MAX34440.
+ MAX34446 only supports temp[1-3].