hwmon: (ltc2978) Add support for LTC2980 and LTM2987

LTC2980 and LTM2987 are command compatible to LTC2977. They consist of
two LTC2977 on a single die, and are instantiated as two separate chips,
each supporting eight channels.

Suggested-by: Michael Jones <mike@proclivis.com>
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 36 insertions, 13 deletions

diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index 7e982884e359..158355398798 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -19,6 +19,10 @@ Supported chips:
     Addresses scanned: -
     Datasheet: http://www.linear.com/product/ltc2978
     	       http://www.linear.com/product/ltc2978a
+  * Linear Technology LTC2980
+    Prefix: 'ltc2980'
+    Addresses scanned: -
+    Datasheet: http://www.linear.com/product/ltc2980
   * Linear Technology LTC3880
     Prefix: 'ltc3880'
     Addresses scanned: -
@@ -35,6 +39,10 @@ Supported chips:
     Prefix: 'ltc3887'
     Addresses scanned: -
     Datasheet: http://www.linear.com/product/ltc3887
+  * Linear Technology LTM2987
+    Prefix: 'ltm2987'
+    Addresses scanned: -
+    Datasheet: http://www.linear.com/product/ltm2987
   * Linear Technology LTM4676
     Prefix: 'ltm4676'
     Addresses scanned: -
@@ -49,9 +57,15 @@ Description
 LTC2974 and LTC2975 are quad digital power supply managers.
 LTC2978 is an octal power supply monitor.
 LTC2977 is a pin compatible replacement for LTC2978.
+LTC2980 is a 16-channel Power System Manager, consisting of two LTC2977
+in a single die. The chip is instantiated and reported as two separate chips
+on two different I2C bus addresses.
 LTC3880, LTC3882, and LTC3887 are dual output poly-phase step-down DC/DC
 controllers.
 LTC3883 is a single phase step-down DC/DC controller.
+LTM2987 is a 16-channel Power System Manager with two LTC2977 plus
+additional components on a single die. The chip is instantiated and reported
+as two separate chips on two different I2C bus addresses.
 LTM4676 is a dual 13A or single 26A uModule regulator.
 
 
@@ -75,24 +89,29 @@ in1_label		"vin"
 in1_input		Measured input voltage.
 in1_min			Minimum input voltage.
 in1_max			Maximum input voltage.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+			LTM2987 only.
 in1_lcrit		Critical minimum input voltage.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+			LTM2987 only.
 in1_crit		Critical maximum input voltage.
 in1_min_alarm		Input voltage low alarm.
 in1_max_alarm		Input voltage high alarm.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+			LTM2987 only.
 in1_lcrit_alarm		Input voltage critical low alarm.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+			LTM2987 only.
 in1_crit_alarm		Input voltage critical high alarm.
 in1_lowest		Lowest input voltage.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+			LTM2987 only.
 in1_highest		Highest input voltage.
 in1_reset_history	Reset input voltage history.
 
 in[N]_label		"vout[1-8]".
 			LTC2974, LTC2975: N=2-5
-			LTC2977: N=2-9
+			LTC2977, LTC2980, LTM2987: N=2-9
 			LTC2978: N=2-9
 			LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
 			LTC3883: N=2
@@ -113,24 +132,28 @@ in[N]_reset_history	Reset output voltage history.
 temp[N]_input		Measured temperature.
 			On LTC2974 and LTC2975, temp[1-4] report external
 			temperatures, and temp5 reports the chip temperature.
-			On LTC2977 and LTC2978, only one temperature measurement
-			is supported and reports the chip temperature.
+			On LTC2977, LTC2980, LTC2978, and LTM2987, only one
+			temperature measurement is supported and reports
+			the chip temperature.
 			On LTC3880, LTC3882, LTC3887, and LTM4676, temp1 and
 			temp2 report external temperatures, and temp3 reports
 			the chip temperature.
 			On LTC3883, temp1 reports an external temperature,
 			and temp2 reports the chip temperature.
-temp[N]_min		Mimimum temperature. LTC2974, LCT2977, and LTC2978 only.
+temp[N]_min		Mimimum temperature. LTC2974, LCT2977, LTM2980, LTC2978,
+			and LTM2987 only.
 temp[N]_max		Maximum temperature.
 temp[N]_lcrit		Critical low temperature.
 temp[N]_crit		Critical high temperature.
 temp[N]_min_alarm	Temperature low alarm.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and
+			LTM2987 only.
 temp[N]_max_alarm	Temperature high alarm.
 temp[N]_lcrit_alarm	Temperature critical low alarm.
 temp[N]_crit_alarm	Temperature critical high alarm.
 temp[N]_lowest		Lowest measured temperature.
-			LTC2974, LTC2975, LTC2977, and LTC2978 only.
+			LTC2974, LTC2975, LTC2977, LTM2980, LTC2978, and
+			LTM2987 only.
 			Not supported for chip temperature sensor on LTC2974 and
 			LTC2975.
 temp[N]_highest		Highest measured temperature. Not supported for chip
@@ -143,7 +166,7 @@ power1_input		Measured input power.
 
 power[N]_label		"pout[1-4]".
 			LTC2974, LTC2975: N=1-4
-			LTC2977: Not supported
+			LTC2977, LTC2980, LTM2987: Not supported
 			LTC2978: Not supported
 			LTC3880, LTC3882, LTC3887, LTM4676: N=1-2
 			LTC3883: N=2
@@ -158,7 +181,7 @@ curr1_reset_history	Reset input current history. LTC3883 only.
 
 curr[N]_label		"iout[1-4]".
 			LTC2974, LTC2975: N=1-4
-			LTC2977: not supported
+			LTC2977, LTC2980, LTM2987: not supported
 			LTC2978: not supported
 			LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
 			LTC3883: N=2