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hwmon: (lm93) Add support for LM94

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This patch adds basic support for LM94 to the LM93 driver. LM94 specific
sensors and features are not supported.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2011-01-17 12:48:20 -08:00
parent a25cecce88
commit c7bf71c517
3 changed files with 28 additions and 4 deletions
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7
Documentation/hwmon/lm93
View File

@ -6,6 +6,10 @@ Supported chips:
Prefix 'lm93'
Addresses scanned: I2C 0x2c-0x2e
Datasheet: http://www.national.com/ds.cgi/LM/LM93.pdf
* National Semiconductor LM94
Prefix 'lm94'
Addresses scanned: I2C 0x2c-0x2e
Datasheet: http://www.national.com/ds.cgi/LM/LM94.pdf
Authors:
Mark M. Hoffman <mhoffman@lightlink.com>
@ -56,6 +60,9 @@ previous motherboard management ASICs and uses some of the LM85's features
for dynamic Vccp monitoring and PROCHOT. It is designed to monitor a dual
processor Xeon class motherboard with a minimum of external components.
LM94 is also supported in LM93 compatible mode. Extra sensors and features of
LM94 are not supported.
User Interface
--------------

4
drivers/hwmon/Kconfig
View File

@ -618,8 +618,8 @@ config SENSORS_LM93
depends on I2C
select HWMON_VID
help
If you say yes here you get support for National Semiconductor LM93
sensor chips.
If you say yes here you get support for National Semiconductor LM93,
LM94, and compatible sensor chips.
This driver can also be built as a module. If so, the module
will be called lm93.

21
drivers/hwmon/lm93.c
View File

@ -135,6 +135,11 @@
#define LM93_MFR_ID 0x73
#define LM93_MFR_ID_PROTOTYPE 0x72
/* LM94 REGISTER VALUES */
#define LM94_MFR_ID_2 0x7a
#define LM94_MFR_ID 0x79
#define LM94_MFR_ID_PROTOTYPE 0x78
/* SMBus capabilities */
#define LM93_SMBUS_FUNC_FULL (I2C_FUNC_SMBUS_BYTE_DATA | \
I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA)
@ -2504,6 +2509,7 @@ static int lm93_detect(struct i2c_client *client, struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
int mfr, ver;
const char *name;
if (!i2c_check_functionality(adapter, LM93_SMBUS_FUNC_MIN))
return -ENODEV;
@ -2517,13 +2523,23 @@ static int lm93_detect(struct i2c_client *client, struct i2c_board_info *info)
}
ver = lm93_read_byte(client, LM93_REG_VER);
if (ver != LM93_MFR_ID && ver != LM93_MFR_ID_PROTOTYPE) {
switch (ver) {
case LM93_MFR_ID:
case LM93_MFR_ID_PROTOTYPE:
name = "lm93";
break;
case LM94_MFR_ID_2:
case LM94_MFR_ID:
case LM94_MFR_ID_PROTOTYPE:
name = "lm94";
break;
default:
dev_dbg(&adapter->dev,
"detect failed, bad version id 0x%02x!\n", ver);
return -ENODEV;
}
strlcpy(info->type, "lm93", I2C_NAME_SIZE);
strlcpy(info->type, name, I2C_NAME_SIZE);
dev_dbg(&adapter->dev,"loading %s at %d,0x%02x\n",
client->name, i2c_adapter_id(client->adapter),
client->addr);
@ -2602,6 +2618,7 @@ static int lm93_remove(struct i2c_client *client)
static const struct i2c_device_id lm93_id[] = {
{ "lm93", 0 },
{ "lm94", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm93_id);