diff options
author | Jean Delvare <khali@linux-fr.org> | 2008-06-25 17:10:30 +0400 |
---|---|---|
committer | Mark M. Hoffman <mhoffman@lightlink.com> | 2008-08-01 07:44:03 +0400 |
commit | 5f44759470f7248f74947a39cba339009d62052c (patch) | |
tree | d599a349467fee830b7009fb604ef2b8bcd48855 /drivers/hwmon/lm85.c | |
parent | e89e22b23bceb3fbbcfb931ad17a564b7c1eaa55 (diff) | |
download | linux-5f44759470f7248f74947a39cba339009d62052c.tar.xz |
hwmon: (lm85) Simplify device initialization function
Clean up and simplify the device initialization function:
* Degrade error messages to warnings - what they really are.
* Stop warning about VxI mode, we don't really care.
* Drop comment about lack of limit initialization - that's the standard
way, all hardware monitoring drivers do that.
* Only read the configuration register once.
* Only write back to the configuration register if needed.
* Don't attempt to clear the lock bit, it locks itself to 1.
* Move the function to before it's called, so that we no longer need to
forware declare it.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Diffstat (limited to 'drivers/hwmon/lm85.c')
-rw-r--r-- | drivers/hwmon/lm85.c | 61 |
1 files changed, 18 insertions, 43 deletions
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c index c7e10af0173f..12d446f54f97 100644 --- a/drivers/hwmon/lm85.c +++ b/drivers/hwmon/lm85.c @@ -318,7 +318,6 @@ static int lm85_detach_client(struct i2c_client *client); static int lm85_read_value(struct i2c_client *client, u8 reg); static void lm85_write_value(struct i2c_client *client, u8 reg, int value); static struct lm85_data *lm85_update_device(struct device *dev); -static void lm85_init_client(struct i2c_client *client); static struct i2c_driver lm85_driver = { @@ -1086,6 +1085,24 @@ static const struct attribute_group lm85_group_in567 = { .attrs = lm85_attributes_in567, }; +static void lm85_init_client(struct i2c_client *client) +{ + int value; + + /* Start monitoring if needed */ + value = lm85_read_value(client, LM85_REG_CONFIG); + if (!(value & 0x01)) { + dev_info(&client->dev, "Starting monitoring\n"); + lm85_write_value(client, LM85_REG_CONFIG, value | 0x01); + } + + /* Warn about unusual configuration bits */ + if (value & 0x02) + dev_warn(&client->dev, "Device configuration is locked\n"); + if (!(value & 0x04)) + dev_warn(&client->dev, "Device is not ready\n"); +} + static int lm85_detect(struct i2c_adapter *adapter, int address, int kind) { @@ -1330,48 +1347,6 @@ static void lm85_write_value(struct i2c_client *client, u8 reg, int value) } } -static void lm85_init_client(struct i2c_client *client) -{ - int value; - struct lm85_data *data = i2c_get_clientdata(client); - - dev_dbg(&client->dev, "Initializing device\n"); - - /* Warn if part was not "READY" */ - value = lm85_read_value(client, LM85_REG_CONFIG); - dev_dbg(&client->dev, "LM85_REG_CONFIG is: 0x%02x\n", value); - if (value & 0x02) { - dev_err(&client->dev, "Client (%d,0x%02x) config is locked.\n", - i2c_adapter_id(client->adapter), client->addr); - } - if (!(value & 0x04)) { - dev_err(&client->dev, "Client (%d,0x%02x) is not ready.\n", - i2c_adapter_id(client->adapter), client->addr); - } - if (value & 0x10 - && (data->type == adm1027 - || data->type == adt7463)) { - dev_err(&client->dev, "Client (%d,0x%02x) VxI mode is set. " - "Please report this to the lm85 maintainer.\n", - i2c_adapter_id(client->adapter), client->addr); - } - - /* WE INTENTIONALLY make no changes to the limits, - * offsets, pwms, fans and zones. If they were - * configured, we don't want to mess with them. - * If they weren't, the default is 100% PWM, no - * control and will suffice until 'sensors -s' - * can be run by the user. - */ - - /* Start monitoring */ - value = lm85_read_value(client, LM85_REG_CONFIG); - /* Try to clear LOCK, Set START, save everything else */ - value = (value & ~0x02) | 0x01; - dev_dbg(&client->dev, "Setting CONFIG to: 0x%02x\n", value); - lm85_write_value(client, LM85_REG_CONFIG, value); -} - static struct lm85_data *lm85_update_device(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); |