diff options
| author | Rajvi Jingar <rajvi.jingar@linux.intel.com> | 2023-12-18 20:22:14 -0800 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2023-12-19 16:48:27 +0100 |
| commit | 1d62ada48d41d72d72232585eed0f3e1136ae1fb (patch) | |
| tree | 7906bb1abd345398044a1801375b76791cb24d9f /drivers/platform | |
| parent | d79c3c82ee82cc99ffde4c4f5fe69db35bcfb733 (diff) | |
| download | linux-1d62ada48d41d72d72232585eed0f3e1136ae1fb.tar.gz | |
platform/x86/intel/pmc: Add ssram_init flag in PMC discovery in Meteor Lake
If PMC discovery using pmc_core_ssram_init() was unsuccessful for the
Meteor Lake platform, the legacy enumeration method is used. In this
case pci device struct for the PMC SSRAM is not available
and pmc_core_ssram_get_lpm_reqs() will not work. Add ssram_init flag to
indicate if the PMC SSRAM initialization was successful or not. Call
pmc_core_ssram_get_lpm_reqs() only if the ssram_init flag is set to true.
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Link: https://lore.kernel.org/r/20231219042216.2592029-6-rajvi.jingar@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/intel/pmc/mtl.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel/pmc/mtl.c b/drivers/platform/x86/intel/pmc/mtl.c index d2470f8002981..e75431325dda9 100644 --- a/drivers/platform/x86/intel/pmc/mtl.c +++ b/drivers/platform/x86/intel/pmc/mtl.c @@ -994,6 +994,7 @@ int mtl_core_init(struct pmc_dev *pmcdev) struct pmc *pmc = pmcdev->pmcs[PMC_IDX_SOC]; int ret; int func = 2; + bool ssram_init = true; mtl_d3_fixup(); @@ -1006,6 +1007,7 @@ int mtl_core_init(struct pmc_dev *pmcdev) */ ret = pmc_core_ssram_init(pmcdev, func); if (ret) { + ssram_init = false; dev_warn(&pmcdev->pdev->dev, "ssram init failed, %d, using legacy init\n", ret); pmc->map = &mtl_socm_reg_map; @@ -1023,5 +1025,8 @@ int mtl_core_init(struct pmc_dev *pmcdev) dev_dbg(&pmcdev->pdev->dev, "ignoring GBE LTR\n"); pmc_core_send_ltr_ignore(pmcdev, 3); - return pmc_core_ssram_get_lpm_reqs(pmcdev); + if (ssram_init) + return pmc_core_ssram_get_lpm_reqs(pmcdev); + + return 0; } |