hwmon: (pmbus/isl68137): Update ISL68137 to upstream

Apply differences from hwmon review to bring the driver code to the same
point.  There were some key differences regarding attribute placement
from the review, beyond the normal cleanup.

OpenBMC-Staging-Count: 1
Signed-off-by: Patrick Venture <venture@google.com>
[AJ: Rework subject]
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

1 files changed, 72 insertions, 0 deletions

diff --git a/Documentation/hwmon/isl68137 b/Documentation/hwmon/isl68137
new file mode 100644
index 000000000000..92e5c5fc5b77
--- /dev/null
+++ b/Documentation/hwmon/isl68137
@@ -0,0 +1,72 @@
+Kernel driver isl68137
+======================
+
+Supported chips:
+  * Intersil ISL68137
+    Prefix: 'isl68137'
+    Addresses scanned: -
+    Datasheet: Publicly available at the Intersil website
+      https://www.intersil.com/content/dam/Intersil/documents/isl6/isl68137.pdf
+
+Authors:
+        Maxim Sloyko <maxims@google.com>
+        Robert Lippert <rlippert@google.com>
+        Patrick Venture <venture@google.com>
+
+Description
+-----------
+
+Intersil ISL68137 is a digital output 7-phase configurable PWM
+controller with an AVSBus interface.
+
+Usage Notes
+-----------
+
+This driver does not probe for PMBus devices. You will have to instantiate
+devices explicitly.
+
+The ISL68137 AVS operation mode must be enabled/disabled at runtime.
+
+Beyond the normal sysfs pmbus attributes, the driver exposes a control attribute.
+
+Additional Sysfs attributes
+---------------------------
+
+avs(0|1)_enable		Controls the AVS state of each rail.
+
+curr1_label		"iin"
+curr1_input		Measured input current
+curr1_crit		Critical maximum current
+curr1_crit_alarm	Current critical high alarm
+
+curr[2-3]_label		"iout[1-2]"
+curr[2-3]_input		Measured output current
+curr[2-3]_crit		Critical maximum current
+curr[2-3]_crit_alarm	Current critical high alarm
+
+in1_label		"vin"
+in1_input		Measured input voltage
+in1_lcrit		Critical minimum input voltage
+in1_lcrit_alarm		Input voltage critical low alarm
+in1_crit		Critical maximum input voltage
+in1_crit_alarm		Input voltage critical high alarm
+
+in[2-3]_label		"vout[1-2]"
+in[2-3]_input		Measured output voltage
+in[2-3]_lcrit		Critical minimum output voltage
+in[2-3]_lcrit_alarm	Output voltage critical low alarm
+in[2-3]_crit		Critical maximum output voltage
+in[2-3]_crit_alarm	Output voltage critical high alarm
+
+power1_label		"pin"
+power1_input		Measured input power
+power1_alarm		Input power high alarm
+
+power[2-3]_label	"pout[1-2]"
+power[2-3]_input	Measured output power
+
+temp[1-3]_input		Measured temperature
+temp[1-3]_crit		Critical high temperature
+temp[1-3]_crit_alarm	Chip temperature critical high alarm
+temp[1-3]_max		Maximum temperature
+temp[1-3]_max_alarm	Chip temperature high alarm