diff options
Diffstat (limited to 'src/soc/amd/common')
| -rw-r--r-- | src/soc/amd/common/block/acpi/cpu_power_state.c | 36 | ||||
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/cpu.h | 1 |
2 files changed, 36 insertions, 1 deletions
diff --git a/src/soc/amd/common/block/acpi/cpu_power_state.c b/src/soc/amd/common/block/acpi/cpu_power_state.c index 811bea09b2..d518ea082e 100644 --- a/src/soc/amd/common/block/acpi/cpu_power_state.c +++ b/src/soc/amd/common/block/acpi/cpu_power_state.c @@ -10,6 +10,42 @@ #include <soc/msr.h> #include <types.h> +static uint32_t get_pstate_core_power(union pstate_msr pstate_reg) +{ + uint32_t voltage_in_uvolts, current_value_amps, current_divisor, power_in_mw; + + /* Get Voltage from core voltage ID */ + voltage_in_uvolts = get_pstate_core_uvolts(pstate_reg); + + /* Current value in amps */ + current_value_amps = pstate_reg.idd_value; + + /* Current divisor */ + current_divisor = pstate_reg.idd_div; + + /* Power in mW */ + power_in_mw = (voltage_in_uvolts) / 10 * current_value_amps; + + switch (current_divisor) { + case 0: + power_in_mw = power_in_mw / 100L; + break; + case 1: + power_in_mw = power_in_mw / 1000L; + break; + case 2: + power_in_mw = power_in_mw / 10000L; + break; + case 3: + /* current_divisor is set to an undefined value.*/ + printk(BIOS_WARNING, "Undefined current_divisor set for enabled P-state .\n"); + power_in_mw = 0; + break; + } + + return power_in_mw; +} + /* * Populate structure describing enabled p-states and return count of enabled p-states. */ diff --git a/src/soc/amd/common/block/include/amdblocks/cpu.h b/src/soc/amd/common/block/include/amdblocks/cpu.h index 8c868cb99f..18b300dfdd 100644 --- a/src/soc/amd/common/block/include/amdblocks/cpu.h +++ b/src/soc/amd/common/block/include/amdblocks/cpu.h @@ -19,7 +19,6 @@ union pstate_msr; /* proper definition is in soc/msr.h */ uint32_t get_uvolts_from_vid(uint16_t core_vid); uint32_t get_pstate_core_freq(union pstate_msr pstate_reg); uint32_t get_pstate_core_uvolts(union pstate_msr pstate_reg); -uint32_t get_pstate_core_power(union pstate_msr pstate_reg); const acpi_cstate_t *get_cstate_config_data(size_t *size); #endif /* AMD_BLOCK_CPU_H */ |