hwmon: (tmp401) Add support for TMP431

TMP431 is compatible to TMP401.

Also add support for additional I2C addresses supported by TMP411B
and TMP411C.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>

2 files changed, 14 insertions, 5 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index a0f1d6a406eb..43ed3aef21c8 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1238,8 +1238,8 @@ config SENSORS_TMP401
         tristate "Texas Instruments TMP401 and compatibles"
         depends on I2C
         help
-          If you say yes here you get support for Texas Instruments TMP401 and
-          TMP411 temperature sensor chips.
+          If you say yes here you get support for Texas Instruments TMP401,
+          TMP411, and TMP431 temperature sensor chips.
 
           This driver can also be built as a module.  If so, the module
           will be called tmp401.
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index 97bf34494d84..f4290ec7d9e7 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -40,9 +40,9 @@
 #include <linux/sysfs.h>
 
 /* Addresses to scan */
-static const unsigned short normal_i2c[] = { 0x4c, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
 
-enum chips { tmp401, tmp411 };
+enum chips { tmp401, tmp411, tmp431 };
 
 /*
  * The TMP401 registers, note some registers have different addresses for
@@ -90,6 +90,7 @@ static const u8 TMP411_TEMP_HIGHEST_LSB[2]		= { 0x33, 0x37 };
 #define TMP401_MANUFACTURER_ID                  0x55
 #define TMP401_DEVICE_ID                        0x11
 #define TMP411_DEVICE_ID                        0x12
+#define TMP431_DEVICE_ID                        0x31
 
 /*
  * Driver data (common to all clients)
@@ -98,6 +99,7 @@ static const u8 TMP411_TEMP_HIGHEST_LSB[2]		= { 0x33, 0x37 };
 static const struct i2c_device_id tmp401_id[] = {
         { "tmp401", tmp401 },
         { "tmp411", tmp411 },
+        { "tmp431", tmp431 },
         { }
 };
 MODULE_DEVICE_TABLE(i2c, tmp401_id);
@@ -555,11 +557,18 @@ static int tmp401_detect(struct i2c_client *client,
 
         switch (reg) {
         case TMP401_DEVICE_ID:
+                if (client->addr != 0x4c)
+                        return -ENODEV;
                 kind = tmp401;
                 break;
         case TMP411_DEVICE_ID:
                 kind = tmp411;
                 break;
+        case TMP431_DEVICE_ID:
+                if (client->addr == 0x4e)
+                        return -ENODEV;
+                kind = tmp431;
+                break;
         default:
                 return -ENODEV;
         }
@@ -603,7 +612,7 @@ static int tmp401_probe(struct i2c_client *client,
 {
         int i, err = 0;
         struct tmp401_data *data;
-        const char *names[] = { "TMP401", "TMP411" };
+        const char *names[] = { "TMP401", "TMP411", "TMP431" };
 
         data = devm_kzalloc(&client->dev, sizeof(struct tmp401_data),
                             GFP_KERNEL);