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| author | Xi Pardee <xi.pardee@intel.com> | 2023-11-30 01:21:29 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-12-04 16:53:43 +0300 |
| commit | 4d621c3f02ba71cb8ed48b7c32ecb0910000cc28 (patch) | |
| tree | 5ab3e595658abfb672c34f1ab751833eccbcd327 /drivers/platform/x86/intel/pmc/core.h | |
| parent | 0f601dec1856d675a1251e25e858d8f1cb0b8026 (diff) | |
| download | linux-4d621c3f02ba71cb8ed48b7c32ecb0910000cc28.tar.xz | |
platform/x86/intel/pmc: Retrieve LPM information using Intel PMT
On supported platforms, the low power mode (LPM) requirements for entering
each idle substate are described in Platform Monitoring Technology (PMT)
telemetry entries. Provide a function for platform code to attempt to find
and read the requirements from the telemetry entries.
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20231129222132.2331261-18-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmc/core.h')
| -rw-r--r-- | drivers/platform/x86/intel/pmc/core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel/pmc/core.h b/drivers/platform/x86/intel/pmc/core.h index edaa70067e41..85b6f6ae4995 100644 --- a/drivers/platform/x86/intel/pmc/core.h +++ b/drivers/platform/x86/intel/pmc/core.h @@ -320,6 +320,7 @@ struct pmc_reg_map { const u32 lpm_status_offset; const u32 lpm_live_status_offset; const u32 etr3_offset; + const u8 *lpm_reg_index; }; /** @@ -329,6 +330,7 @@ struct pmc_reg_map { * specific attributes */ struct pmc_info { + u32 guid; u16 devid; const struct pmc_reg_map *map; }; @@ -486,6 +488,7 @@ extern const struct pmc_bit_map *mtl_ioem_lpm_maps[]; extern const struct pmc_reg_map mtl_ioem_reg_map; extern void pmc_core_get_tgl_lpm_reqs(struct platform_device *pdev); +extern int pmc_core_ssram_get_lpm_reqs(struct pmc_dev *pmcdev); extern int pmc_core_send_ltr_ignore(struct pmc_dev *pmcdev, u32 value); int pmc_core_resume_common(struct pmc_dev *pmcdev); |