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authorJean Delvare <khali@linux-fr.org>2009-12-09 20:35:54 +0100
committerJean Delvare <khali@linux-fr.org>2009-12-09 20:35:54 +0100
commitdbe73c8f454a40de06039ec97bc0272f41f1d3c7 (patch)
tree5bc08b0a733b5e199112d5c3bb49d3280b3a4895 /drivers/hwmon
parent8f2fa77c53ba8c10696143c21b4111d449c85fb2 (diff)
hwmon: (tmp401/tmp421) Clean up detect functions
As kind is now hard-coded to -1, there is room for code clean-ups. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Andre Prendel <andre.prendel@gmx.de>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/tmp401.c55
-rw-r--r--drivers/hwmon/tmp421.c45
2 files changed, 47 insertions, 53 deletions
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index 7b34f2cd08bb..ee9673467c4a 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -488,46 +488,43 @@ static void tmp401_init_client(struct i2c_client *client)
i2c_smbus_write_byte_data(client, TMP401_CONFIG_WRITE, config);
}
-static int tmp401_detect(struct i2c_client *client, int kind,
+static int tmp401_detect(struct i2c_client *client, int _kind,
struct i2c_board_info *info)
{
+ enum chips kind;
struct i2c_adapter *adapter = client->adapter;
+ u8 reg;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
/* Detect and identify the chip */
- if (kind <= 0) {
- u8 reg;
-
- reg = i2c_smbus_read_byte_data(client,
- TMP401_MANUFACTURER_ID_REG);
- if (reg != TMP401_MANUFACTURER_ID)
- return -ENODEV;
-
- reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
-
- switch (reg) {
- case TMP401_DEVICE_ID:
- kind = tmp401;
- break;
- case TMP411_DEVICE_ID:
- kind = tmp411;
- break;
- default:
- return -ENODEV;
- }
+ reg = i2c_smbus_read_byte_data(client, TMP401_MANUFACTURER_ID_REG);
+ if (reg != TMP401_MANUFACTURER_ID)
+ return -ENODEV;
- reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
- if (reg & 0x1b)
- return -ENODEV;
+ reg = i2c_smbus_read_byte_data(client, TMP401_DEVICE_ID_REG);
- reg = i2c_smbus_read_byte_data(client,
- TMP401_CONVERSION_RATE_READ);
- /* Datasheet says: 0x1-0x6 */
- if (reg > 15)
- return -ENODEV;
+ switch (reg) {
+ case TMP401_DEVICE_ID:
+ kind = tmp401;
+ break;
+ case TMP411_DEVICE_ID:
+ kind = tmp411;
+ break;
+ default:
+ return -ENODEV;
}
+
+ reg = i2c_smbus_read_byte_data(client, TMP401_CONFIG_READ);
+ if (reg & 0x1b)
+ return -ENODEV;
+
+ reg = i2c_smbus_read_byte_data(client, TMP401_CONVERSION_RATE_READ);
+ /* Datasheet says: 0x1-0x6 */
+ if (reg > 15)
+ return -ENODEV;
+
strlcpy(info->type, tmp401_id[kind - 1].name, I2C_NAME_SIZE);
return 0;
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index 20924343431b..bb5464a289ca 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -223,39 +223,36 @@ static int tmp421_init_client(struct i2c_client *client)
return 0;
}
-static int tmp421_detect(struct i2c_client *client, int kind,
+static int tmp421_detect(struct i2c_client *client, int _kind,
struct i2c_board_info *info)
{
+ enum chips kind;
struct i2c_adapter *adapter = client->adapter;
const char *names[] = { "TMP421", "TMP422", "TMP423" };
+ u8 reg;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- if (kind <= 0) {
- u8 reg;
-
- reg = i2c_smbus_read_byte_data(client,
- TMP421_MANUFACTURER_ID_REG);
- if (reg != TMP421_MANUFACTURER_ID)
- return -ENODEV;
-
- reg = i2c_smbus_read_byte_data(client,
- TMP421_DEVICE_ID_REG);
- switch (reg) {
- case TMP421_DEVICE_ID:
- kind = tmp421;
- break;
- case TMP422_DEVICE_ID:
- kind = tmp422;
- break;
- case TMP423_DEVICE_ID:
- kind = tmp423;
- break;
- default:
- return -ENODEV;
- }
+ reg = i2c_smbus_read_byte_data(client, TMP421_MANUFACTURER_ID_REG);
+ if (reg != TMP421_MANUFACTURER_ID)
+ return -ENODEV;
+
+ reg = i2c_smbus_read_byte_data(client, TMP421_DEVICE_ID_REG);
+ switch (reg) {
+ case TMP421_DEVICE_ID:
+ kind = tmp421;
+ break;
+ case TMP422_DEVICE_ID:
+ kind = tmp422;
+ break;
+ case TMP423_DEVICE_ID:
+ kind = tmp423;
+ break;
+ default:
+ return -ENODEV;
}
+
strlcpy(info->type, tmp421_id[kind - 1].name, I2C_NAME_SIZE);
dev_info(&adapter->dev, "Detected TI %s chip at 0x%02x\n",
names[kind - 1], client->addr);