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| author | Perry Yuan <[email protected]> | 2025-06-09 20:05:13 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2025-07-07 20:26:37 +0000 |
| commit | 263e66f9c35922d0cfd961df6d7a492820143792 (patch) | |
| tree | af74f1638ca048c02c4117ecd3d2ee9cb177ffaf | |
| parent | platform/x86: hfi: Add online and offline callback support (diff) | |
| download | kernel-263e66f9c35922d0cfd961df6d7a492820143792.tar.gz kernel-263e66f9c35922d0cfd961df6d7a492820143792.zip | |
platform/x86: hfi: Add power management callback
Introduce power management callbacks for the `amd_hfi` driver. Specifically,
add the `suspend` and `resume` callbacks to handle the necessary operations
during system low power states and wake-up.
Signed-off-by: Perry Yuan <[email protected]>
Co-developed-by: Mario Limonciello <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Reviewed-by: Gautham R. Shenoy <[email protected]>
Acked-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/[email protected]
| -rw-r--r-- | drivers/platform/x86/amd/hfi/hfi.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 28ef7212d339..b0a5840b2598 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -385,6 +385,38 @@ static int amd_hfi_metadata_parser(struct platform_device *pdev, return ret; } +static int amd_hfi_pm_resume(struct device *dev) +{ + int ret, cpu; + + for_each_online_cpu(cpu) { + ret = amd_hfi_set_state(cpu, true); + if (ret < 0) { + dev_err(dev, "failed to enable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static int amd_hfi_pm_suspend(struct device *dev) +{ + int ret, cpu; + + for_each_online_cpu(cpu) { + ret = amd_hfi_set_state(cpu, false); + if (ret < 0) { + dev_err(dev, "failed to disable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(amd_hfi_pm_ops, amd_hfi_pm_suspend, amd_hfi_pm_resume); + static const struct acpi_device_id amd_hfi_platform_match[] = { {"AMDI0104", 0}, { } @@ -434,6 +466,7 @@ static struct platform_driver amd_hfi_driver = { .driver = { .name = AMD_HFI_DRIVER, .owner = THIS_MODULE, + .pm = &amd_hfi_pm_ops, .acpi_match_table = ACPI_PTR(amd_hfi_platform_match), }, .probe = amd_hfi_probe, |