hwmon: (pmbus/ltc2978) Clean up documentation

Some sysfs attributes are only supported on LTC2978 and not on LTC3880.
Update documentation to reflect which attributes are supported for which chips.

Output current attributes supported on LTC3880 were described as providing
input current values. Fix text to reflect that the attributes provide output
current values.

"reset history" attribute descriptions were misleading and seemed to imply
that all history was reset when writing a single attribute. Replace with more
accurate text.

Replace 'internal temperature" with "chip temperature". Temperature limits
not only apply to the chip temperature, but also to external temperatures
on LTC3880, so remove the word "chip" from the attribute description.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 19 insertions, 22 deletions

diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index e4d75c606c97..dcb10be36e7f 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -41,17 +41,16 @@ 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_max                 Maximum input voltage. LTC2978 only.
+in1_lcrit               Critical minimum input voltage. LTC2978 only.
 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_max_alarm           Input voltage high alarm. LTC2978 only.
+in1_lcrit_alarm         Input voltage critical low alarm. LTC2978 only.
 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.
+in1_reset_history       Reset input voltage history.
 
 in[2-9]_label           "vout[1-8]". Channels 3 to 9 on LTC2978 only.
 in[2-9]_input           Measured output voltage.
@@ -65,27 +64,25 @@ 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.
+in[2-9]_reset_history   Reset output voltage history.
 
 temp[1-3]_input         Measured temperature.
                         On LTC2978, only one temperature measurement is
-                        supported and reflects the internal temperature.
+                        supported and reports the chip temperature.
                         On LTC3880, temp1 and temp2 report external
-                        temperatures, and temp3 reports the internal
+                        temperatures, and temp3 reports the chip
                         temperature.
-temp[1-3]_min           Mimimum temperature.
+temp[1-3]_min           Mimimum temperature. LTC2978 only.
 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]_min_alarm     Temperature low alarm. LTC2978 only.
+temp[1-3]_max_alarm     Temperature high alarm.
+temp[1-3]_lcrit_alarm   Temperature critical low alarm.
+temp[1-3]_crit_alarm    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.
+temp[1-3]_reset_history Reset temperature history.
 
 power[1-2]_label        "pout[1-2]". LTC3880 only.
 power[1-2]_input        Measured power.
@@ -96,8 +93,8 @@ curr1_max		Maximum input current.
 curr1_max_alarm         Input current high alarm.
 
 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.
+curr[2-3]_input         Measured output current.
+curr[2-3]_max           Maximum output current.
+curr[2-3]_crit          Critical output current.
+curr[2-3]_max_alarm     Output current high alarm.
+curr[2-3]_crit_alarm    Output current critical high alarm.