diff options
Diffstat (limited to 'src/acpi')
| -rw-r--r-- | src/acpi/acpigen_dptf.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/acpi/acpigen_dptf.c b/src/acpi/acpigen_dptf.c index 6caf8bfcaf..9be3f5be8f 100644 --- a/src/acpi/acpigen_dptf.c +++ b/src/acpi/acpigen_dptf.c @@ -15,6 +15,9 @@ enum { DEFAULT_TRIP_POINT = 0xFFFFFFFFull, DEFAULT_WEIGHT = 100, DPTF_MAX_ART_THRESHOLDS = 10, + PPCC_REVISION = 2, + RAPL_PL1_INDEX = 0, + RAPL_PL2_INDEX = 1, }; /* Convert degrees C to 1/10 degree Kelvin for ACPI */ @@ -358,3 +361,46 @@ void dptf_write_fan_perf(const struct dptf_fan_perf *states, int max_count) acpigen_pop_len(); /* Package */ acpigen_pop_len(); /* Scope */ } + +void dptf_write_power_limits(const struct dptf_power_limits *limits) +{ + char *pkg_count; + + /* Nothing to do */ + if (!limits->pl1.min_power && !limits->pl2.min_power) + return; + + dptf_write_scope(DPTF_CPU); + acpigen_write_method("PPCC", 0); + + pkg_count = acpigen_write_package(1); /* 1 for the Revision */ + acpigen_write_integer(PPCC_REVISION); /* revision */ + + if (limits->pl1.min_power) { + (*pkg_count)++; + acpigen_write_package(6); + acpigen_write_integer(RAPL_PL1_INDEX); + acpigen_write_integer(limits->pl1.min_power); + acpigen_write_integer(limits->pl1.max_power); + acpigen_write_integer(limits->pl1.time_window_min); + acpigen_write_integer(limits->pl1.time_window_max); + acpigen_write_integer(limits->pl1.granularity); + acpigen_pop_len(); /* inner Package */ + } + + if (limits->pl2.min_power) { + (*pkg_count)++; + acpigen_write_package(6); + acpigen_write_integer(RAPL_PL2_INDEX); + acpigen_write_integer(limits->pl2.min_power); + acpigen_write_integer(limits->pl2.max_power); + acpigen_write_integer(limits->pl2.time_window_min); + acpigen_write_integer(limits->pl2.time_window_max); + acpigen_write_integer(limits->pl2.granularity); + acpigen_pop_len(); /* inner Package */ + } + + acpigen_pop_len(); /* outer Package */ + acpigen_pop_len(); /* Method */ + acpigen_pop_len(); /* Scope */ +} |