hwmon: (tmp421) Add support for TMP441 and TMP442

TMP441 and TMP442 are compatible to TMP421 and TMP422.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <jdelvare@suse.de>

2 files changed, 18 insertions, 5 deletions

diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index ae1e2160c1b5..37908ff8f7ff 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1431,7 +1431,7 @@ config SENSORS_TMP421
         depends on I2C
         help
           If you say yes here you get support for Texas Instruments TMP421,
-          TMP422 and TMP423 temperature sensor chips.
+          TMP422, TMP423, TMP441, and TMP442 temperature sensor chips.
 
           This driver can also be built as a module.  If so, the module
           will be called tmp421.
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index 9438c1bd5d59..2ae383f737b4 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -21,7 +21,7 @@
 
 /*
  * Driver for the Texas Instruments TMP421 SMBus temperature sensor IC.
- * Supported models: TMP421, TMP422, TMP423
+ * Supported models: TMP421, TMP422, TMP423, TMP441, TMP442
  */
 
 #include <linux/module.h>
@@ -39,7 +39,7 @@
 static const unsigned short normal_i2c[] = { 0x2a, 0x4c, 0x4d, 0x4e, 0x4f,
                                              I2C_CLIENT_END };
 
-enum chips { tmp421, tmp422, tmp423 };
+enum chips { tmp421, tmp422, tmp423, tmp441, tmp442 };
 
 /* The TMP421 registers */
 #define TMP421_STATUS_REG                       0x08
@@ -60,11 +60,15 @@ static const u8 TMP421_TEMP_LSB[4]		= { 0x10, 0x11, 0x12, 0x13 };
 #define TMP421_DEVICE_ID                        0x21
 #define TMP422_DEVICE_ID                        0x22
 #define TMP423_DEVICE_ID                        0x23
+#define TMP441_DEVICE_ID                        0x41
+#define TMP442_DEVICE_ID                        0x42
 
 static const struct i2c_device_id tmp421_id[] = {
         { "tmp421", 2 },
         { "tmp422", 3 },
         { "tmp423", 4 },
+        { "tmp441", 2 },
+        { "tmp442", 3 },
         { }
 };
 MODULE_DEVICE_TABLE(i2c, tmp421_id);
@@ -235,7 +239,8 @@ static int tmp421_detect(struct i2c_client *client,
 {
         enum chips kind;
         struct i2c_adapter *adapter = client->adapter;
-        const char *names[] = { "TMP421", "TMP422", "TMP423" };
+        const char * const names[] = { "TMP421", "TMP422", "TMP423",
+                                       "TMP441", "TMP442" };
         int addr = client->addr;
         u8 reg;
 
@@ -269,6 +274,14 @@ static int tmp421_detect(struct i2c_client *client,
                         return -ENODEV;
                 kind = tmp423;
                 break;
+        case TMP441_DEVICE_ID:
+                kind = tmp441;
+                break;
+        case TMP442_DEVICE_ID:
+                if (addr != 0x4c && addr != 0x4d)
+                        return -ENODEV;
+                kind = tmp442;
+                break;
         default:
                 return -ENODEV;
         }
@@ -319,5 +332,5 @@ static struct i2c_driver tmp421_driver = {
 module_i2c_driver(tmp421_driver);
 
 MODULE_AUTHOR("Andre Prendel <andre.prendel@gmx.de>");
-MODULE_DESCRIPTION("Texas Instruments TMP421/422/423 temperature sensor driver");
+MODULE_DESCRIPTION("Texas Instruments TMP421/422/423/441/442 temperature sensor driver");
 MODULE_LICENSE("GPL");