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platform/x86/intel/pmc: Add suspend callback

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Add a suspend callback to struct pmc for performing platform specific tasks
before device suspend. This is needed in order to perform GBE LTR ignore on
certain platforms at suspend-time instead of at probe-time and replace the
GBE LTR ignore removal that was done in order to fix a bug introduced by
commit 804951203aa5 ("platform/x86:intel/pmc: Combine core_init() and
core_configure()").

Fixes: 804951203aa5 ("platform/x86:intel/pmc: Combine core_init() and core_configure()")
Signed-off-by: "David E. Box" <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20231223032548.1680738-4-david.e.box@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
David E. Box 2023-12-22 19:25:43 -08:00 committed by Ilpo Järvinen
parent b28ff7a7c3
commit 7c13f365ae
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GPG Key ID: 59AC4F6153E5CE31
2 changed files with 5 additions and 0 deletions
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3
drivers/platform/x86/intel/pmc/core.c
View File

@ -1279,6 +1279,9 @@ static __maybe_unused int pmc_core_suspend(struct device *dev)
struct pmc_dev *pmcdev = dev_get_drvdata(dev);
struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN];
if (pmcdev->suspend)
pmcdev->suspend(pmcdev);
/* Check if the syspend will actually use S0ix */
if (pm_suspend_via_firmware())
return 0;

2
drivers/platform/x86/intel/pmc/core.h
View File

@ -363,6 +363,7 @@ struct pmc {
* @s0ix_counter: S0ix residency (step adjusted)
* @num_lpm_modes: Count of enabled modes
* @lpm_en_modes: Array of enabled modes from lowest to highest priority
* @suspend: Function to perform platform specific suspend
* @resume: Function to perform platform specific resume
*
* pmc_dev contains info about power management controller device.
@ -379,6 +380,7 @@ struct pmc_dev {
u64 s0ix_counter;
int num_lpm_modes;
int lpm_en_modes[LPM_MAX_NUM_MODES];
void (*suspend)(struct pmc_dev *pmcdev);
int (*resume)(struct pmc_dev *pmcdev);
bool has_die_c6;