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| author | Jean Delvare <khali@linux-fr.org> | 2012-01-16 22:51:47 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@endymion.delvare> | 2012-01-16 22:51:47 +0100 |
| commit | d216f6809eb690b9a888c286cde68cda4d0c4cfa (patch) | |
| tree | 46a83526ded3df6713a0d41514adb1ad465b969f /Documentation/hwmon | |
| parent | hwmon: (lm63) Fix incorrect comment about I2C address (diff) | |
| download | linux-d216f6809eb690b9a888c286cde68cda4d0c4cfa.tar.xz linux-d216f6809eb690b9a888c286cde68cda4d0c4cfa.zip | |
hwmon: (lm63) Expose automatic fan speed control lookup table
The LM63 and compatible devices have a lookup table to control the fan
speed automatically. Expose it in sysfs. Values are cached for 5
seconds, independently of the other register values to avoid slowing
down "sensors". We might make the table values writable in the future.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'Documentation/hwmon')
| -rw-r--r-- | Documentation/hwmon/lm63 | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/hwmon/lm63 b/Documentation/hwmon/lm63 index df3e1ae42f39..4d30d209881a 100644 --- a/Documentation/hwmon/lm63 +++ b/Documentation/hwmon/lm63 @@ -66,7 +66,8 @@ supported either. The lm63 driver will not update its values more frequently than configured with the update_interval sysfs attribute; reading them more often will do no harm, -but will return 'old' values. +but will return 'old' values. Values in the automatic fan control lookup table +(attributes pwm1_auto_*) have their own independent lifetime of 5 seconds. The LM64 is effectively an LM63 with GPIO lines. The driver does not support these GPIO lines at present. |