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Commit c7bf71c5 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (lm93) Add support for LM94 



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

Signed-off-by: default avatarGuenter Roeck <guenter.roeck@ericsson.com>
Acked-by: default avatarJean Delvare <khali@linux-fr.org>
parent a25cecce

Documentation/hwmon/lm93

+7 −0
Original line number Diff line number Diff line
@@ -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

--------------

drivers/hwmon/Kconfig

+2 −2
Original line number Diff line number Diff line
@@ -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.

drivers/hwmon/lm93.c

+19 −2
Original line number Diff line number Diff line
@@ -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);