hwmon: (jc42) Add support for Microchip MCP9808 temperature sensor

MCP9808 is not officially compliant to JC-42, similar to MCP9804,
but its registers are compatible to JC-42.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/Documentation/hwmon/jc42 b/Documentation/hwmon/jc42
index f7f1830a25663c6273812abe9cbddf8245a050d4..b4b671f22453e6132fc376f8f9fa81996b07707c 100644 (file)
--- a/Documentation/hwmon/jc42
+++ b/Documentation/hwmon/jc42
@@ -18,10 +18,11 @@ Supported chips:
   * Maxim MAX6604
     Datasheets:
        http://datasheets.maxim-ic.com/en/ds/MAX6604.pdf
-  * Microchip MCP9804, MCP9805, MCP98242, MCP98243, MCP98244, MCP9843
+  * Microchip MCP9804, MCP9805, MCP9808, MCP98242, MCP98243, MCP98244, MCP9843
     Datasheets:
        http://ww1.microchip.com/downloads/en/DeviceDoc/22203C.pdf
        http://ww1.microchip.com/downloads/en/DeviceDoc/21977b.pdf
+       http://ww1.microchip.com/downloads/en/DeviceDoc/25095A.pdf
        http://ww1.microchip.com/downloads/en/DeviceDoc/21996a.pdf
        http://ww1.microchip.com/downloads/en/DeviceDoc/22153c.pdf
        http://ww1.microchip.com/downloads/en/DeviceDoc/22327A.pdf

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index b2aa13bd89dc23feb2b1c097f87b20a2a69923e5..91f145e0cd4585fa7db8e2a9dc7c12999415d506 100644 (file)
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -645,8 +645,8 @@ config SENSORS_JC42
          temperature sensors, which are used on many DDR3 memory modules for
          mobile devices and servers.  Support will include, but not be limited
          to, ADT7408, AT30TS00, CAT34TS02, CAT6095, MAX6604, MCP9804, MCP9805,
-         MCP98242, MCP98243, MCP98244, MCP9843, SE97, SE98, STTS424(E),
-         STTS2002, STTS3000, TSE2002, TSE2004, TS3000, and TS3001.
+         MCP9808, MCP98242, MCP98243, MCP98244, MCP9843, SE97, SE98,
+         STTS424(E), STTS2002, STTS3000, TSE2002, TSE2004, TS3000, and TS3001.
 
          This driver can also be built as a module.  If so, the module
          will be called jc42.

diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c
index 9887d3224a865e9aa0de33e8d38894600cc0be3b..f67c1bbe2c510e8d979b721b63051f79c18e6e2c 100644 (file)
--- a/drivers/hwmon/jc42.c
+++ b/drivers/hwmon/jc42.c
@@ -104,6 +104,9 @@ static const unsigned short normal_i2c[] = {
 #define MCP9804_DEVID          0x0200
 #define MCP9804_DEVID_MASK     0xfffc
 
+#define MCP9808_DEVID          0x0400
+#define MCP9808_DEVID_MASK     0xfffc
+
 #define MCP98242_DEVID         0x2000
 #define MCP98242_DEVID_MASK    0xfffc
 
@@ -160,6 +163,7 @@ static struct jc42_chips jc42_chips[] = {
        { IDT_MANID, TS3001_DEVID, TS3001_DEVID_MASK },
        { MAX_MANID, MAX6604_DEVID, MAX6604_DEVID_MASK },
        { MCP_MANID, MCP9804_DEVID, MCP9804_DEVID_MASK },
+       { MCP_MANID, MCP9808_DEVID, MCP9808_DEVID_MASK },
        { MCP_MANID, MCP98242_DEVID, MCP98242_DEVID_MASK },
        { MCP_MANID, MCP98243_DEVID, MCP98243_DEVID_MASK },
        { MCP_MANID, MCP98244_DEVID, MCP98244_DEVID_MASK },