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platform/x86: hfi: Add power management callback

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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 <Perry.Yuan@amd.com>
Co-developed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/20250609200518.3616080-9-superm1@kernel.org
This commit is contained in:
Perry Yuan 2025-06-09 15:05:13 -05:00 committed by Borislav Petkov (AMD)
parent bb20421c05
commit 263e66f9c3
1 changed files with 33 additions and 0 deletions
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33
drivers/platform/x86/amd/hfi/hfi.c
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@ -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,