Displaying 5 results from an estimated 5 matches for "acpi_device_set_power".
2019 Oct 16
3
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
..._power_state
> pci_write_config_word(PCI_PM_CTRL, D3hot) <-- set to D3hot
> __pci_complete_power_transition(D3cold)
> pci_platform_power_transition(D3cold)
> platform_pci_set_power_state(D3cold)
> acpi_pci_set_power_state(D3cold)
> acpi_device_set_power(ACPI_STATE_D3_COLD)
> ...
> acpi_evaluate_object("_OFF") <-- set to D3cold
>
> I did not understand the connection with platform (ACPI) power
> management from your patch. It sounds like you want this entire path
> except that you wa...
2019 Oct 21
0
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...PM_CTRL, D3hot) <-- set to D3hot
> > > __pci_complete_power_transition(D3cold)
> > > pci_platform_power_transition(D3cold)
> > > platform_pci_set_power_state(D3cold)
> > > acpi_pci_set_power_state(D3cold)
> > > acpi_device_set_power(ACPI_STATE_D3_COLD)
> > > ...
> > > acpi_evaluate_object("_OFF") <-- set to D3cold
> > >
> > > I did not understand the connection with platform (ACPI) power
> > > management from your patch. It sounds like...
2019 Oct 21
1
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...ci_write_config_word(PCI_PM_CTRL, D3hot) <-- set to D3hot
> > __pci_complete_power_transition(D3cold)
> > pci_platform_power_transition(D3cold)
> > platform_pci_set_power_state(D3cold)
> > acpi_pci_set_power_state(D3cold)
> > acpi_device_set_power(ACPI_STATE_D3_COLD)
> > ...
> > acpi_evaluate_object("_OFF") <-- set to D3cold
> >
> > I did not understand the connection with platform (ACPI) power
> > management from your patch. It sounds like you want this entire pat...
2019 Oct 16
2
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
but setting the PCI_DEV_FLAGS_NO_D3 flag does prevent using the
platform means of putting the device into D3cold, right? That's
actually what should still happen, just the D3hot step should be
skipped.
On Wed, Oct 16, 2019 at 9:14 PM Bjorn Helgaas <helgaas at kernel.org> wrote:
>
> On Wed, Oct 16, 2019 at 04:44:49PM +0200, Karol Herbst wrote:
> > Fixes state transitions of
2019 Oct 16
0
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...all if quirked
pci_raw_set_power_state
pci_write_config_word(PCI_PM_CTRL, D3hot) <-- set to D3hot
__pci_complete_power_transition(D3cold)
pci_platform_power_transition(D3cold)
platform_pci_set_power_state(D3cold)
acpi_pci_set_power_state(D3cold)
acpi_device_set_power(ACPI_STATE_D3_COLD)
...
acpi_evaluate_object("_OFF") <-- set to D3cold
I did not understand the connection with platform (ACPI) power
management from your patch. It sounds like you want this entire path
except that you want to skip the PCI_PM_CTRL wr...