hwmon: (adm1021) Clean up detect function
As kind is now hard-coded to -1, there is room for code clean-ups.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/adm1021.c b/drivers/hwmon/adm1021.c
index afc5943..33acf29 100644
--- a/drivers/hwmon/adm1021.c
+++ b/drivers/hwmon/adm1021.c
@@ -288,9 +288,8 @@
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
- int i;
- const char *type_name = "";
- int conv_rate, status, config;
+ const char *type_name;
+ int conv_rate, status, config, man_id, dev_id;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
pr_debug("adm1021: detect failed, "
@@ -303,62 +302,37 @@
ADM1021_REG_CONV_RATE_R);
config = i2c_smbus_read_byte_data(client, ADM1021_REG_CONFIG_R);
- /* Now, we do the remaining detection. */
- if (kind < 0) {
- if ((status & 0x03) != 0x00 || (config & 0x3F) != 0x00
- || (conv_rate & 0xF8) != 0x00) {
- pr_debug("adm1021: detect failed, "
- "chip not detected!\n");
- return -ENODEV;
- }
+ /* Check unused bits */
+ if ((status & 0x03) || (config & 0x3F) || (conv_rate & 0xF8)) {
+ pr_debug("adm1021: detect failed, chip not detected!\n");
+ return -ENODEV;
}
/* Determine the chip type. */
- if (kind <= 0) {
- i = i2c_smbus_read_byte_data(client, ADM1021_REG_MAN_ID);
- if (i == 0x41)
- if ((i2c_smbus_read_byte_data(client,
- ADM1021_REG_DEV_ID) & 0xF0) == 0x30)
- kind = adm1023;
- else
- kind = adm1021;
- else if (i == 0x49)
- kind = thmc10;
- else if (i == 0x23)
- kind = gl523sm;
- else if ((i == 0x4d) &&
- (i2c_smbus_read_byte_data(client,
- ADM1021_REG_DEV_ID) == 0x01))
- kind = max1617a;
- else if (i == 0x54)
- kind = mc1066;
- /* LM84 Mfr ID in a different place, and it has more unused bits */
- else if (conv_rate == 0x00
- && (kind == 0 /* skip extra detection */
- || ((config & 0x7F) == 0x00
- && (status & 0xAB) == 0x00)))
- kind = lm84;
- else
- kind = max1617;
- }
+ man_id = i2c_smbus_read_byte_data(client, ADM1021_REG_MAN_ID);
+ dev_id = i2c_smbus_read_byte_data(client, ADM1021_REG_DEV_ID);
- if (kind == max1617) {
- type_name = "max1617";
- } else if (kind == max1617a) {
+ if (man_id == 0x4d && dev_id == 0x01)
type_name = "max1617a";
- } else if (kind == adm1021) {
- type_name = "adm1021";
- } else if (kind == adm1023) {
- type_name = "adm1023";
- } else if (kind == thmc10) {
+ else if (man_id == 0x41) {
+ if ((dev_id & 0xF0) == 0x30)
+ type_name = "adm1023";
+ else
+ type_name = "adm1021";
+ } else if (man_id == 0x49)
type_name = "thmc10";
- } else if (kind == lm84) {
- type_name = "lm84";
- } else if (kind == gl523sm) {
+ else if (man_id == 0x23)
type_name = "gl523sm";
- } else if (kind == mc1066) {
+ else if (man_id == 0x54)
type_name = "mc1066";
- }
+ /* LM84 Mfr ID in a different place, and it has more unused bits */
+ else if (conv_rate == 0x00
+ && (config & 0x7F) == 0x00
+ && (status & 0xAB) == 0x00)
+ type_name = "lm84";
+ else
+ type_name = "max1617";
+
pr_debug("adm1021: Detected chip %s at adapter %d, address 0x%02x.\n",
type_name, i2c_adapter_id(adapter), client->addr);
strlcpy(info->type, type_name, I2C_NAME_SIZE);
