| Message ID | 20241015213645.1476-10-mario.limonciello@amd.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add support for AMD hardware feedback interface | expand |
On Tue, Oct 15, 2024 at 04:36:40PM -0500, 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->v3: > * Whitespace (Ilpo) > --- > 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 d971ec1124af..79963c423d35 100644 > --- a/drivers/platform/x86/amd/hfi/hfi.c > +++ b/drivers/platform/x86/amd/hfi/hfi.c > @@ -392,6 +392,38 @@ 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) { Shouldn't this be for_each_online_cpu() in light of the hotplug notifier callbacks implemented in Patch 8? > + 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_present_cpu(cpu) { Ditto.. > + 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}, > { } > @@ -438,6 +470,7 @@ 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, > -- > 2.43.0 -- Thanks and Regards gautham.
On 10/17/2024 01:00, Gautham R. Shenoy wrote: > On Tue, Oct 15, 2024 at 04:36:40PM -0500, 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->v3: >> * Whitespace (Ilpo) >> --- >> 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 d971ec1124af..79963c423d35 100644 >> --- a/drivers/platform/x86/amd/hfi/hfi.c >> +++ b/drivers/platform/x86/amd/hfi/hfi.c >> @@ -392,6 +392,38 @@ 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) { > > Shouldn't this be for_each_online_cpu() in light of the hotplug > notifier callbacks implemented in Patch 8? Thx, will fix. > >> + 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_present_cpu(cpu) { > > Ditto.. > >> + 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}, >> { } >> @@ -438,6 +470,7 @@ 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, >> -- >> 2.43.0 > > -- > Thanks and Regards > gautham.
diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index d971ec1124af..79963c423d35 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -392,6 +392,38 @@ 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_present_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}, { } @@ -438,6 +470,7 @@ 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,