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authorJean Delvare <khali@linux-fr.org>2008-06-25 09:10:30 -0400
committerMark M. Hoffman <mhoffman@lightlink.com>2008-07-31 23:44:03 -0400
commit5f44759470f7248f74947a39cba339009d62052c (patch)
treed599a349467fee830b7009fb604ef2b8bcd48855 /drivers
parente89e22b23bceb3fbbcfb931ad17a564b7c1eaa55 (diff)
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')
-rw-r--r--drivers/hwmon/lm85.c61
1 files changed, 18 insertions, 43 deletions
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index c7e10af0173..12d446f54f9 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);