diff options
Diffstat (limited to 'include/fan.h')
| -rw-r--r-- | include/fan.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/include/fan.h b/include/fan.h index 781bfc9951..4c41f2c175 100644 --- a/include/fan.h +++ b/include/fan.h @@ -8,13 +8,33 @@ #ifndef __CROS_EC_FAN_H #define __CROS_EC_FAN_H +/* Characteristic of each physical fan */ +struct fan_t { + unsigned int flags; + int rpm_min; + int rpm_max; + /* Hardware channel number (the meaning is chip-specific) */ + int ch; + /* Active-high power_good input GPIO, or -1 if none */ + int pgood_gpio; + /* Active-high power_enable output GPIO, or -1 if none */ + int enable_gpio; +}; + +/* Values for the flags field */ +#define FAN_USE_RPM_MODE (1 << 0) + +/* The list of fans is instantiated in board.c. */ +extern const struct fan_t fans[]; + + /** * Set the amount of active cooling needed. The thermal control task will call * this frequently, and the fan control logic will attempt to provide it. * * @param pct Percentage of cooling effort needed (0 - 100) */ -void fan_set_percent_needed(int pct); +void fan_set_percent_needed(int pct); /* HEY: need fan arg */ /** * This function translates the percentage of cooling needed into a target RPM. @@ -24,7 +44,7 @@ void fan_set_percent_needed(int pct); * @param pct Percentage of cooling effort needed (always in [0,100]) * Return Target RPM for fan */ -int fan_percent_to_rpm(int pct); +int fan_percent_to_rpm(int pct); /* HEY: need fan arg */ /** |