diff options
Diffstat (limited to 'src/include/acpi')
| -rw-r--r-- | src/include/acpi/acpigen_dptf.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/include/acpi/acpigen_dptf.h b/src/include/acpi/acpigen_dptf.h index 7588752aac..3452f79578 100644 --- a/src/include/acpi/acpigen_dptf.h +++ b/src/include/acpi/acpigen_dptf.h @@ -32,6 +32,10 @@ enum { /* Maximum found by automatic inspection (awk) */ DPTF_MAX_CHARGER_PERF_STATES = 10, + DPTF_MAX_FAN_PERF_STATES = 10, + + /* From ACPI spec 6.3 */ + DPTF_FIELD_UNUSED = 0xFFFFFFFFull, }; /* Active Policy */ @@ -87,6 +91,18 @@ struct dptf_charger_perf { uint16_t raw_perf; }; +/* Different levels of fan activity, chosen by active policies */ +struct dptf_fan_perf { + /* Fan percentage level */ + uint8_t percent; + /* Fan speed, in RPM */ + uint16_t speed; + /* Noise level, in 0.1 dBs */ + uint16_t noise_level; + /* Power in mA */ + uint16_t power; +}; + /* * This function provides tables of temperature and corresponding fan or percent. When the * temperature thresholds are met (_AC0 - _AC9), the fan is driven to corresponding percentage @@ -115,6 +131,17 @@ void dptf_write_critical_policies(const struct dptf_critical_policy *policies, i */ void dptf_write_charger_perf(const struct dptf_charger_perf *perf, int max_count); +/* + * This function writes an ACPI table describing various performance levels possible for active + * policies. They indicate, for a given fan percentage level: + * 1) What the corresponding speed is (in RPM) + * 2) The expected noise level (in tenths of decibels AKA centibels, or DPTF_FIELD_UNUSED) + * 3) The power consumption (in mW, or DPTF_FIELD_UNUSED to indicate this field is unused). + * 4) The corresponding active cooling trip point (from _ART) (typically left as + * DPTF_FIELD_UNUSED). + */ +void dptf_write_fan_perf(const struct dptf_fan_perf *perf, int max_count); + /* Helper method to open the scope for a given participant. */ void dptf_write_scope(enum dptf_participant participant); |