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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/adm1275
parentd15d76448bb58c7832e954b6a8f1e301720b7866 (diff)
parent312869ec935ab3bb67b7ba641a7d11230555aff5 (diff)
downloadkernel-31f6765266417c0d99f0e922fe82848a7c9c2ae9.tar.gz
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/adm1275')
-rw-r--r--Documentation/hwmon/adm127530
1 files changed, 23 insertions, 7 deletions
diff --git a/Documentation/hwmon/adm1275 b/Documentation/hwmon/adm1275
index e5f982c845fd..2cfa25667123 100644
--- a/Documentation/hwmon/adm1275
+++ b/Documentation/hwmon/adm1275
@@ -2,6 +2,10 @@ Kernel driver adm1275
=====================
Supported chips:
+ * Analog Devices ADM1075
+ Prefix: 'adm1075'
+ Addresses scanned: -
+ Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf
* Analog Devices ADM1275
Prefix: 'adm1275'
Addresses scanned: -
@@ -17,13 +21,13 @@ Author: Guenter Roeck <guenter.roeck@ericsson.com>
Description
-----------
-This driver supports hardware montoring for Analog Devices ADM1275 and ADM1276
-Hot-Swap Controller and Digital Power Monitor.
+This driver supports hardware montoring for Analog Devices ADM1075, ADM1275,
+and ADM1276 Hot-Swap Controller and Digital Power Monitor.
-ADM1275 and ADM1276 are hot-swap controllers that allow a circuit board to be
-removed from or inserted into a live backplane. They also feature current and
-voltage readback via an integrated 12-bit analog-to-digital converter (ADC),
-accessed using a PMBus interface.
+ADM1075, ADM1275, and ADM1276 are hot-swap controllers that allow a circuit
+board to be removed from or inserted into a live backplane. They also feature
+current and voltage readback via an integrated 12-bit analog-to-digital
+converter (ADC), accessed using a PMBus interface.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus for details on PMBus client drivers.
@@ -36,6 +40,10 @@ This driver does not auto-detect devices. You will have to instantiate the
devices explicitly. Please see Documentation/i2c/instantiating-devices for
details.
+The ADM1075, unlike many other PMBus devices, does not support internal voltage
+or current scaling. Reported voltages, currents, and power are raw measurements,
+and will typically have to be scaled.
+
Platform data support
---------------------
@@ -51,7 +59,8 @@ The following attributes are supported. Limits are read-write, history reset
attributes are write-only, all other attributes are read-only.
in1_label "vin1" or "vout1" depending on chip variant and
- configuration.
+ configuration. On ADM1075, vout1 reports the voltage on
+ the VAUX pin.
in1_input Measured voltage.
in1_min Minimum Voltage.
in1_max Maximum voltage.
@@ -74,3 +83,10 @@ curr1_crit Critical maximum current. Depending on the chip
curr1_crit_alarm Critical current high alarm.
curr1_highest Historical maximum current.
curr1_reset_history Write any value to reset history.
+
+power1_label "pin1"
+power1_input Input power.
+power1_reset_history Write any value to reset history.
+
+ Power attributes are supported on ADM1075 and ADM1276
+ only.