hwmon: (pmbus/ltc2978) Explicit driver for LTC2978
Provide explicit driver for LTC2978 to enable support for minimum and peak
attributes. Remove ltc2978 chip id from generic pmbus driver.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
new file mode 100644
index 0000000..499129e
--- /dev/null
+++ b/Documentation/hwmon/ltc2978
@@ -0,0 +1,78 @@
+Kernel driver ltc2978
+=====================
+
+Supported chips:
+ * Linear Technology LTC2978
+ Prefix: 'ltc2978'
+ Addresses scanned: -
+ Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf
+
+Author: Guenter Roeck <guenter.roeck@ericsson.com>
+
+
+Description
+-----------
+
+The LTC2978 is an octal power supply monitor, supervisor, sequencer and
+margin controller.
+
+
+Usage Notes
+-----------
+
+This driver does not probe for PMBus devices. You will have to instantiate
+devices explicitly.
+
+Example: the following commands will load the driver for an LTC2978 at address
+0x60 on I2C bus #1:
+
+# modprobe ltc2978
+# echo ltc2978 0x60 > /sys/bus/i2c/devices/i2c-1/new_device
+
+
+Sysfs attributes
+----------------
+
+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.
+in1_highest Highest input voltage.
+in1_reset_history Reset history. Writing into this attribute will reset
+ history for all attributes.
+
+in[2-9]_label "vout[1-8]".
+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.
+in[2-9]_highest Lowest output voltage.
+in[2-9]_reset_history Reset history. Writing into this attribute will reset
+ history for all attributes.
+
+temp1_input Measured temperature.
+temp1_min Mimimum temperature.
+temp1_max Maximum temperature.
+temp1_lcrit Critical low temperature.
+temp1_crit Critical high temperature.
+temp1_min_alarm Chip temperature low alarm.
+temp1_max_alarm Chip temperature high alarm.
+temp1_lcrit_alarm Chip temperature critical low alarm.
+temp1_crit_alarm Chip temperature critical high alarm.
+temp1_lowest Lowest measured temperature.
+temp1_highest Highest measured temperature.
+temp1_reset_history Reset history. Writing into this attribute will reset
+ history for all attributes.
diff --git a/Documentation/hwmon/pmbus b/Documentation/hwmon/pmbus
index c36c1c1..ce02f5d 100644
--- a/Documentation/hwmon/pmbus
+++ b/Documentation/hwmon/pmbus
@@ -8,11 +8,6 @@
Addresses scanned: -
Datasheet:
http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146395
- * Linear Technology LTC2978
- Octal PMBus Power Supply Monitor and Controller
- Prefix: 'ltc2978'
- Addresses scanned: -
- Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf
* ON Semiconductor ADP4000, NCP4200, NCP4208
Prefixes: 'adp4000', 'ncp4200', 'ncp4208'
Addresses scanned: -