[PATCH v2 07/16] platform/x86/amd/pmf: Add support update p3t limit
From: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Date: 2023-09-30 08:39:07
Also in:
amd-gfx, dri-devel, platform-driver-x86
Subsystem:
amd pmf driver, the rest, x86 platform drivers · Maintainers:
Shyam Sundar S K, Linus Torvalds, Hans de Goede, Ilpo Järvinen
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 <mario.limonciello@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> --- drivers/platform/x86/amd/pmf/pmf.h | 3 +++ drivers/platform/x86/amd/pmf/tee-if.c | 8 ++++++++ 2 files changed, 11 insertions(+)
diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h
index 60b11455dadf..d5e410c41e81 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
@@ -475,6 +477,7 @@ struct pmf_action_table { unsigned long stt_minlimit; /* in mW */ unsigned long stt_skintemp_apu; /* in C */ unsigned long stt_skintemp_hs2; /* in C */ + unsigned long 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 1fc3b57f8d78..315e3d2eacdf 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 : %lu\n", val); + dev->prev_data->p3t_limit = val; + } + break; } } }
--
2.25.1