hwmon: (ltc2978) Add support for LTC3882

LTC3882 is mostly compatible with LTC3880. Major differences are that it
does not measure the input current, and it no longer supports LTC's legacy
mechanism to identify the chip.

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

2 files changed, 18 insertions, 11 deletions

diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
index ed2f09dc2483..230389f6c984 100644
--- a/Documentation/devicetree/bindings/hwmon/ltc2978.txt
+++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
@@ -6,6 +6,7 @@ Required properties:
   * "lltc,ltc2977"
   * "lltc,ltc2978"
   * "lltc,ltc3880"
+  * "lltc,ltc3882"
   * "lltc,ltc3883"
   * "lltc,ltm4676"
 - reg: I2C slave address
@@ -20,7 +21,7 @@ Valid names of regulators depend on number of supplies supported per device:
   * ltc2974 : vout0 - vout3
   * ltc2977 : vout0 - vout7
   * ltc2978 : vout0 - vout7
-  * ltc3880 : vout0 - vout1
+  * ltc3880, ltc3882 : vout0 - vout1
   * ltc3883 : vout0
   * ltm4676 : vout0 - vout1
 
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index 686c078bb0e0..521ee8a1135c 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -19,6 +19,10 @@ Supported chips:
     Prefix: 'ltc3880'
     Addresses scanned: -
     Datasheet: http://www.linear.com/product/ltc3880
+  * Linear Technology LTC3882
+    Prefix: 'ltc3882'
+    Addresses scanned: -
+    Datasheet: http://www.linear.com/product/ltc3882
   * Linear Technology LTC3883
     Prefix: 'ltc3883'
     Addresses scanned: -
@@ -34,11 +38,12 @@ Author: Guenter Roeck <linux@roeck-us.net>
 Description
 -----------
 
-LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply
-monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is a dual
-output poly-phase step-down DC/DC controller. LTC3883 is a single phase
-step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule
-regulator.
+LTC2974 is a quad digital power supply managers.
+LTC2978 is an octal power supply monitor.
+LTC2977 is a pin compatible replacement for LTC2978.
+LTC3880 and LTC3882 are dual output poly-phase step-down DC/DC controllers.
+LTC3883 is a single phase step-down DC/DC controller.
+LTM4676 is a dual 13A or single 26A uModule regulator.
 
 
 Usage Notes
@@ -80,7 +85,7 @@ in[N]_label		"vout[1-8]".
 			LTC2974: N=2-5
 			LTC2977: N=2-9
 			LTC2978: N=2-9
-			LTC3880, LTM4676: N=2-3
+			LTC3880, LTC3882, LTM4676: N=2-3
 			LTC3883: N=2
 in[N]_input		Measured output voltage.
 in[N]_min		Minimum output voltage.
@@ -100,8 +105,9 @@ temp[N]_input		Measured temperature.
 			and temp5 reports the chip temperature.
 			On LTC2977 and LTC2978, only one temperature measurement
 			is supported and reports the chip temperature.
-			On LTC3880 and LTM4676, temp1 and temp2 report external
-			temperatures, and temp3 reports the chip temperature.
+			On LTC3880, LTC3882, 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.
@@ -128,7 +134,7 @@ power[N]_label		"pout[1-4]".
 			LTC2974: N=1-4
 			LTC2977: Not supported
 			LTC2978: Not supported
-			LTC3880, LTM4676: N=1-2
+			LTC3880, LTC3882, LTM4676: N=1-2
 			LTC3883: N=2
 power[N]_input		Measured output power.
 
@@ -143,7 +149,7 @@ curr[N]_label		"iout[1-4]".
 			LTC2974: N=1-4
 			LTC2977: not supported
 			LTC2978: not supported
-			LTC3880, LTM4676: N=2-3
+			LTC3880, LTC3882, LTM4676: N=2-3
 			LTC3883: N=2
 curr[N]_input		Measured output current.
 curr[N]_max		Maximum output current.