| Message ID | 20241010193705.10362-10-mario.limonciello@amd.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
| Series | Add support for AMD hardware feedback interface | expand |
On Thu, 10 Oct 2024, Mario Limonciello wrote: > From: Perry Yuan <Perry.Yuan@amd.com> > > Introduces power management callbacks for the `amd_hfi` driver. > Specifically, the `suspend` and `resume` callbacks have been added > 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> > --- > v2: > * Whitespace changes > * Use on online CPUs not present ones > --- > drivers/platform/x86/amd/hfi/hfi.c | 33 ++++++++++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > > diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c > index c969ee7ea5ee..0263993b0a94 100644 > --- a/drivers/platform/x86/amd/hfi/hfi.c > +++ b/drivers/platform/x86/amd/hfi/hfi.c > @@ -407,6 +407,38 @@ 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_present_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}, > { } > @@ -458,6 +490,7 @@ static struct platform_driver amd_hfi_driver = { > .driver = { > .name = AMD_HFI_DRIVER, > .owner = THIS_MODULE, > + .pm = &amd_hfi_pm_ops, This is inconsistent. > .acpi_match_table = ACPI_PTR(amd_hfi_platform_match), > }, > .probe = amd_hfi_probe, >
diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index c969ee7ea5ee..0263993b0a94 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -407,6 +407,38 @@ 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_present_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}, { } @@ -458,6 +490,7 @@ 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,