hwmon: (dme1737) Add SCH5127 support

Add support for the hardware monitoring capabilities of the SCH5127
chip to the dme1737 driver.

Signed-off-by: Juerg Haefliger <juergh@gmail.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Jeff Rickman <jrickman@myamigos.us>

1 files changed, 41 insertions, 10 deletions

diff --git a/Documentation/hwmon/dme1737 b/Documentation/hwmon/dme1737
index 001d2e70bc11..fc5df7654d63 100644
--- a/Documentation/hwmon/dme1737
+++ b/Documentation/hwmon/dme1737
@@ -9,11 +9,15 @@ Supported chips:
   * SMSC SCH3112, SCH3114, SCH3116
     Prefix: 'sch311x'
     Addresses scanned: none, address read from Super-I/O config space
-    Datasheet: http://www.nuhorizons.com/FeaturedProducts/Volume1/SMSC/311x.pdf
+    Datasheet: Available on the Internet
   * SMSC SCH5027
     Prefix: 'sch5027'
     Addresses scanned: I2C 0x2c, 0x2d, 0x2e
     Datasheet: Provided by SMSC upon request and under NDA
+  * SMSC SCH5127
+    Prefix: 'sch5127'
+    Addresses scanned: none, address read from Super-I/O config space
+    Datasheet: Provided by SMSC upon request and under NDA
 
 Authors:
     Juerg Haefliger <juergh@gmail.com>
@@ -36,8 +40,8 @@ Description
 -----------
 
 This driver implements support for the hardware monitoring capabilities of the
-SMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, and SMSC
-SCH311x Super-I/O chips. These chips feature monitoring of 3 temp sensors
+SMSC DME1737 and Asus A8000 (which are the same), SMSC SCH5027, SCH311x,
+and SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors
 temp[1-3] (2 remote diodes and 1 internal), 7 voltages in[0-6] (6 external and
 1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement
 up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and
@@ -48,14 +52,14 @@ Fan[3-6] and pwm[3,5-6] are optional features and their availability depends on
 the configuration of the chip. The driver will detect which features are
 present during initialization and create the sysfs attributes accordingly.
 
-For the SCH311x, fan[1-3] and pwm[1-3] are always present and fan[4-6] and
-pwm[5-6] don't exist.
+For the SCH311x and SCH5127, fan[1-3] and pwm[1-3] are always present and
+fan[4-6] and pwm[5-6] don't exist.
 
 The hardware monitoring features of the DME1737, A8000, and SCH5027 are only
-accessible via SMBus, while the SCH311x only provides access via the ISA bus.
-The driver will therefore register itself as an I2C client driver if it detects
-a DME1737, A8000, or SCH5027 and as a platform driver if it detects a SCH311x
-chip.
+accessible via SMBus, while the SCH311x and SCH5127 only provide access via
+the ISA bus. The driver will therefore register itself as an I2C client driver
+if it detects a DME1737, A8000, or SCH5027 and as a platform driver if it
+detects a SCH311x or SCH5127 chip.
 
 
 Voltage Monitoring
@@ -76,7 +80,7 @@ DME1737, A8000:
         in6: Vbat       (+3.0V)                 0V - 4.38V
 
 SCH311x:
-        in0: +2.5V                              0V - 6.64V
+        in0: +2.5V                              0V - 3.32V
         in1: Vccp       (processor core)        0V - 2V
         in2: VCC        (internal +3.3V)        0V - 4.38V
         in3: +5V                                0V - 6.64V
@@ -93,6 +97,15 @@ SCH5027:
         in5: VTR        (+3.3V standby)         0V - 4.38V
         in6: Vbat       (+3.0V)                 0V - 4.38V
 
+SCH5127:
+        in0: +2.5                               0V - 3.32V
+        in1: Vccp       (processor core)        0V - 3V
+        in2: VCC        (internal +3.3V)        0V - 4.38V
+        in3: V2_IN                              0V - 1.5V
+        in4: V1_IN                              0V - 1.5V
+        in5: VTR        (+3.3V standby)         0V - 4.38V
+        in6: Vbat       (+3.0V)                 0V - 4.38V
+
 Each voltage input has associated min and max limits which trigger an alarm
 when crossed.
 
@@ -293,3 +306,21 @@ pwm[1-3]_auto_point1_pwm	RW	Auto PWM pwm point. Auto_point1 is the
 pwm[1-3]_auto_point2_pwm        RO      Auto PWM pwm point. Auto_point2 is the
                                         full-speed duty-cycle which is hard-
                                         wired to 255 (100% duty-cycle).
+
+Chip Differences
+----------------
+
+Feature                 dme1737 sch311x sch5027 sch5127
+-------------------------------------------------------
+temp[1-3]_offset        yes     yes
+vid                     yes
+zone3                   yes     yes     yes
+zone[1-3]_hyst          yes     yes
+pwm min/off             yes     yes
+fan3                    opt     yes     opt     yes
+pwm3                    opt     yes     opt     yes
+fan4                    opt             opt
+fan5                    opt             opt
+pwm5                    opt             opt
+fan6                    opt             opt
+pwm6                    opt             opt