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path: root/drivers/hwmon/asb100.c
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Diffstat (limited to 'drivers/hwmon/asb100.c')
-rw-r--r--drivers/hwmon/asb100.c55
1 files changed, 18 insertions, 37 deletions
diff --git a/drivers/hwmon/asb100.c b/drivers/hwmon/asb100.c
index 8acf82977e7..480f80ea1fa 100644
--- a/drivers/hwmon/asb100.c
+++ b/drivers/hwmon/asb100.c
@@ -701,6 +701,7 @@ static int asb100_detect(struct i2c_client *client, int kind,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
+ int val1, val2;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
pr_debug("asb100.o: detect failed, "
@@ -708,50 +709,30 @@ static int asb100_detect(struct i2c_client *client, int kind,
return -ENODEV;
}
- /* The chip may be stuck in some other bank than bank 0. This may
- make reading other information impossible. Specify a force=... or
- force_*=... parameter, and the chip will be reset to the right
- bank. */
- if (kind < 0) {
-
- int val1 = i2c_smbus_read_byte_data(client, ASB100_REG_BANK);
- int val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN);
-
- /* If we're in bank 0 */
- if ((!(val1 & 0x07)) &&
- /* Check for ASB100 ID (low byte) */
- (((!(val1 & 0x80)) && (val2 != 0x94)) ||
- /* Check for ASB100 ID (high byte ) */
- ((val1 & 0x80) && (val2 != 0x06)))) {
- pr_debug("asb100.o: detect failed, "
- "bad chip id 0x%02x!\n", val2);
- return -ENODEV;
- }
+ val1 = i2c_smbus_read_byte_data(client, ASB100_REG_BANK);
+ val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN);
- } /* kind < 0 */
+ /* If we're in bank 0 */
+ if ((!(val1 & 0x07)) &&
+ /* Check for ASB100 ID (low byte) */
+ (((!(val1 & 0x80)) && (val2 != 0x94)) ||
+ /* Check for ASB100 ID (high byte ) */
+ ((val1 & 0x80) && (val2 != 0x06)))) {
+ pr_debug("asb100: detect failed, bad chip id 0x%02x!\n", val2);
+ return -ENODEV;
+ }
- /* We have either had a force parameter, or we have already detected
- Winbond. Put it now into bank 0 and Vendor ID High Byte */
+ /* Put it now into bank 0 and Vendor ID High Byte */
i2c_smbus_write_byte_data(client, ASB100_REG_BANK,
(i2c_smbus_read_byte_data(client, ASB100_REG_BANK) & 0x78)
| 0x80);
/* Determine the chip type. */
- if (kind <= 0) {
- int val1 = i2c_smbus_read_byte_data(client, ASB100_REG_WCHIPID);
- int val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN);
-
- if ((val1 == 0x31) && (val2 == 0x06))
- kind = asb100;
- else {
- if (kind == 0)
- dev_warn(&adapter->dev, "ignoring "
- "'force' parameter for unknown chip "
- "at adapter %d, address 0x%02x.\n",
- i2c_adapter_id(adapter), client->addr);
- return -ENODEV;
- }
- }
+ val1 = i2c_smbus_read_byte_data(client, ASB100_REG_WCHIPID);
+ val2 = i2c_smbus_read_byte_data(client, ASB100_REG_CHIPMAN);
+
+ if (val1 != 0x31 || val2 != 0x06)
+ return -ENODEV;
strlcpy(info->type, "asb100", I2C_NAME_SIZE);