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>
diff --git a/Documentation/hwmon/tmp421 b/Documentation/hwmon/tmp421
index d0e7714..9e6fe55 100644
--- a/Documentation/hwmon/tmp421
+++ b/Documentation/hwmon/tmp421
@@ -14,6 +14,14 @@
Prefix: 'tmp423'
Addresses scanned: I2C 0x4c and 0x4d
Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp421.html
+ * Texas Instruments TMP441
+ Prefix: 'tmp441'
+ Addresses scanned: I2C 0x2a, 0x4c, 0x4d, 0x4e and 0x4f
+ Datasheet: http://www.ti.com/product/tmp441
+ * Texas Instruments TMP442
+ Prefix: 'tmp442'
+ Addresses scanned: I2C 0x4c and 0x4d
+ Datasheet: http://www.ti.com/product/tmp442
Authors:
Andre Prendel <andre.prendel@gmx.de>
@@ -21,13 +29,13 @@
Description
-----------
-This driver implements support for Texas Instruments TMP421, TMP422
-and TMP423 temperature sensor chips. These chips implement one local
-and up to one (TMP421), up to two (TMP422) or up to three (TMP423)
-remote sensors. Temperature is measured in degrees Celsius. The chips
-are wired over I2C/SMBus and specified over a temperature range of -40
-to +125 degrees Celsius. Resolution for both the local and remote
-channels is 0.0625 degree C.
+This driver implements support for Texas Instruments TMP421, TMP422,
+TMP423, TMP441, and TMP442 temperature sensor chips. These chips
+implement one local and up to one (TMP421, TMP441), up to two (TMP422,
+TMP442) or up to three (TMP423) remote sensors. Temperature is measured
+in degrees Celsius. The chips are wired over I2C/SMBus and specified
+over a temperature range of -40 to +125 degrees Celsius. Resolution
+for both the local and remote channels is 0.0625 degree C.
The chips support only temperature measurement. The driver exports
the temperature values via the following sysfs files:
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index ae1e216..37908ff 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1431,7 +1431,7 @@
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 9438c1b..2ae383f 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 @@
#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 @@
{
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 @@
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 @@
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");
