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hwmon: (lm95241) Add support for LM95231

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LM95231 is fully compatible to LM95241; only necessary change is to add
chip detection.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck
2011-07-05 13:31:48 -07:00
parent fffd80ccc1
commit 8c1d04192e
2 changed files with 22 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/hwmon/lm95241.c
+19 -12
View File
@@ -74,8 +74,9 @@ static const unsigned short normal_i2c[] = {
#define TT_OFF 0
#define TT_ON 1
#define TT_MASK 7
#define MANUFACTURER_ID 0x01
#define DEFAULT_REVISION 0xA4
#define NATSEMI_MAN_ID 0x01
#define LM95231_CHIP_ID 0xA1
#define LM95241_CHIP_ID 0xA4
static const u8 lm95241_reg_address[] = {
LM95241_REG_R_LOCAL_TEMPH,
@@ -338,20 +339,25 @@ static int lm95241_detect(struct i2c_client *new_client,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = new_client->adapter;
int address = new_client->addr;
const char *name;
int mfg_id, chip_id;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
if ((i2c_smbus_read_byte_data(new_client, LM95241_REG_R_MAN_ID)
== MANUFACTURER_ID)
&& (i2c_smbus_read_byte_data(new_client, LM95241_REG_R_CHIP_ID)
== DEFAULT_REVISION)) {
name = DEVNAME;
} else {
dev_dbg(&adapter->dev, "LM95241 detection failed at 0x%02x\n",
address);
mfg_id = i2c_smbus_read_byte_data(new_client, LM95241_REG_R_MAN_ID);
if (mfg_id != NATSEMI_MAN_ID)
return -ENODEV;
chip_id = i2c_smbus_read_byte_data(new_client, LM95241_REG_R_CHIP_ID);
switch (chip_id) {
case LM95231_CHIP_ID:
name = "lm95231";
break;
case LM95241_CHIP_ID:
name = "lm95241";
break;
default:
return -ENODEV;
}
@@ -431,7 +437,8 @@ static int lm95241_remove(struct i2c_client *client)
/* Driver data (common to all clients) */
static const struct i2c_device_id lm95241_id[] = {
{ DEVNAME, 0 },
{ "lm95231", 0 },
{ "lm95241", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, lm95241_id);