diff options
Diffstat (limited to 'include/fan.h')
| -rw-r--r-- | include/fan.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/fan.h b/include/fan.h index acae150fc0..781bfc9951 100644 --- a/include/fan.h +++ b/include/fan.h @@ -31,17 +31,27 @@ int fan_percent_to_rpm(int pct); * These functions require chip-specific implementations. */ +/* Enable/Disable the fan controller */ void fan_set_enabled(int ch, int enabled); int fan_get_enabled(int ch); + +/* Fixed pwm duty cycle (0-100%) */ void fan_set_duty(int ch, int percent); int fan_get_duty(int ch); + +/* Enable/Disable automatic RPM control using tach feedback */ void fan_set_rpm_mode(int ch, int rpm_mode); int fan_get_rpm_mode(int ch); + +/* Set the target for the automatic RPM control */ void fan_set_rpm_target(int ch, int rpm); int fan_get_rpm_actual(int ch); int fan_get_rpm_target(int ch); + +/* Is the fan stalled when it shouldn't be? */ int fan_is_stalled(int ch); +/* How is the automatic RPM control doing? */ enum fan_status { FAN_STATUS_STOPPED = 0, FAN_STATUS_CHANGING = 1, @@ -50,8 +60,10 @@ enum fan_status { }; enum fan_status fan_get_status(int ch); -/* Maintain target RPM using tach input */ +/* Flag to enable automatic RPM control using tach input */ #define FAN_USE_RPM_MODE (1 << 0) + +/* Initialize the HW according to the desired flags */ void fan_channel_setup(int ch, unsigned int flags); #endif /* __CROS_EC_FAN_H */ |