diff options
| author | Shyam Sundar S K <Shyam-sundar.S-k@amd.com> | 2022-09-22 18:42:00 +0530 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-09-22 17:42:53 +0200 |
| commit | 1738061c9ec854db2db76be8bb968f550d9bdddc (patch) | |
| tree | 35cf5f55e0dd6f72aac2b0ebb971e4fe453c25d0 /drivers/platform/x86/amd/pmf/acpi.c | |
| parent | 9af48b262675561eefd6edc11b4b02854e6a18ae (diff) | |
platform/x86/amd/pmf: Add support for CnQF
CnQF (a.k.a Cool and Quiet Framework) extends the static slider concept.
PMF dynamically manages system power limits and fan policy based on system
power trends which is representative of workload trend.
Static slider and CnQF controls are mutually exclusive for system power
budget adjustments. CnQF supports configurable number of modes which can
be unique for AC and DC. Every mode is representative of a system state
characterized by unique steady state and boost behavior.
OEMs can configure the different modes/system states and how the
transition to a mode happens. Whether to have CnQF manage system power
budget dynamically in AC or DC or both is also configurable. Mode changes
due to CnQF don't result in slider position change.
The default OEM values are obtained after evaluating the PMF ACPI function
idx 11 & 12 for AC and DC respectively. Whether to turn ON/OFF by default
is guided by a "flag" passed by the OEM BIOS.
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20220922131202.56529-2-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/amd/pmf/acpi.c')
| -rw-r--r-- | drivers/platform/x86/amd/pmf/acpi.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/platform/x86/amd/pmf/acpi.c b/drivers/platform/x86/amd/pmf/acpi.c index cb46a7252414..05a2b8a056fc 100644 --- a/drivers/platform/x86/amd/pmf/acpi.c +++ b/drivers/platform/x86/amd/pmf/acpi.c @@ -233,6 +233,16 @@ static int apmf_get_system_params(struct amd_pmf_dev *dev) return 0; } +int apmf_get_dyn_slider_def_ac(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data) +{ + return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_AC, data, sizeof(*data)); +} + +int apmf_get_dyn_slider_def_dc(struct amd_pmf_dev *pdev, struct apmf_dyn_slider_output *data) +{ + return apmf_if_call_store_buffer(pdev, APMF_FUNC_DYN_SLIDER_DC, data, sizeof(*data)); +} + void apmf_acpi_deinit(struct amd_pmf_dev *pmf_dev) { acpi_handle ahandle = ACPI_HANDLE(pmf_dev->dev); |