From c3b40930a214545919d1385b8aa71cb665904571 Mon Sep 17 00:00:00 2001 From: Shyam Sundar S K Date: Tue, 12 Dec 2023 07:17:00 +0530 Subject: platform/x86/amd/pmf: Add support update p3t limit P3T (Peak Package Power Limit) is a metric within the SMU controller that can influence the power limits. Add support from the driver to update P3T limits accordingly. Reviewed-by: Mario Limonciello Signed-off-by: Shyam Sundar S K Link: https://lore.kernel.org/r/20231212014705.2017474-8-Shyam-sundar.S-k@amd.com Signed-off-by: Hans de Goede --- drivers/platform/x86/amd/pmf/pmf.h | 3 +++ drivers/platform/x86/amd/pmf/tee-if.c | 8 ++++++++ 2 files changed, 11 insertions(+) (limited to 'drivers/platform/x86') diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h index 4da51eb28b6f..37bf1c701361 100644 --- a/drivers/platform/x86/amd/pmf/pmf.h +++ b/drivers/platform/x86/amd/pmf/pmf.h @@ -49,6 +49,7 @@ #define GET_STT_MIN_LIMIT 0x1F #define GET_STT_LIMIT_APU 0x20 #define GET_STT_LIMIT_HS2 0x21 +#define SET_P3T 0x23 /* P3T: Peak Package Power Limit */ /* OS slider update notification */ #define DC_BEST_PERF 0 @@ -72,6 +73,7 @@ #define PMF_POLICY_STT_MIN 6 #define PMF_POLICY_STT_SKINTEMP_APU 7 #define PMF_POLICY_STT_SKINTEMP_HS2 8 +#define PMF_POLICY_P3T 38 /* TA macros */ #define PMF_TA_IF_VERSION_MAJOR 1 @@ -481,6 +483,7 @@ struct pmf_action_table { u32 stt_minlimit; /* in mW */ u32 stt_skintemp_apu; /* in C */ u32 stt_skintemp_hs2; /* in C */ + u32 p3t_limit; /* in mW */ }; /* Input conditions */ diff --git a/drivers/platform/x86/amd/pmf/tee-if.c b/drivers/platform/x86/amd/pmf/tee-if.c index e96db406e91b..bf8cb98d41ec 100644 --- a/drivers/platform/x86/amd/pmf/tee-if.c +++ b/drivers/platform/x86/amd/pmf/tee-if.c @@ -105,6 +105,14 @@ static void amd_pmf_apply_policies(struct amd_pmf_dev *dev, struct ta_pmf_enact_ dev->prev_data->stt_skintemp_hs2 = val; } break; + + case PMF_POLICY_P3T: + if (dev->prev_data->p3t_limit != val) { + amd_pmf_send_cmd(dev, SET_P3T, false, val, NULL); + dev_dbg(dev->dev, "update P3T: %u\n", val); + dev->prev_data->p3t_limit = val; + } + break; } } } -- cgit v1.2.3