diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2013-01-26 15:15:37 -0800 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2013-02-06 09:58:04 -0800 |
| commit | ce603b18f30aea1216a00673a33805d4f5a5e16b (patch) | |
| tree | d96326369050cf4e63388a07125bd0a9884d3846 /drivers/hwmon/pmbus | |
| parent | aebcbbfc4955929286a15a04592a2281d3e527db (diff) | |
hwmon: (pmbus) Add function to clear sensor cache
For PMBus chips, modifying one limit register may affect other limits.
Since limits are all cached in the PMBus core driver, related changes
are not reflected in reported limits.
Introduce function to clear the attribute cache. After calling this function,
the core pmbus driver re-reads all cached values.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus.h | 1 | ||||
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index 164d1770648..fa9beb3eb60 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -369,6 +369,7 @@ struct pmbus_driver_info { /* Function declarations */ +void pmbus_clear_cache(struct i2c_client *client); int pmbus_set_page(struct i2c_client *client, u8 page); int pmbus_read_word_data(struct i2c_client *client, u8 page, u8 reg); int pmbus_write_word_data(struct i2c_client *client, u8 page, u8 reg, u16 word); diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 3b5c24dd0b7..32f4530cd1e 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -113,6 +113,14 @@ struct pmbus_data { u8 currpage; }; +void pmbus_clear_cache(struct i2c_client *client) +{ + struct pmbus_data *data = i2c_get_clientdata(client); + + data->valid = false; +} +EXPORT_SYMBOL_GPL(pmbus_clear_cache); + int pmbus_set_page(struct i2c_client *client, u8 page) { struct pmbus_data *data = i2c_get_clientdata(client); |