Displaying 8 results from an estimated 8 matches for "__pci_complete_power_transition".
2018 Feb 18
0
[PATCH 2/7] PCI: Make pci_wakeup_bus() & pci_bus_set_current_state() public
...ree to walk.
* @state: state to be set
*/
-static void __pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state)
+void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state)
{
if (bus)
pci_walk_bus(bus, __pci_dev_set_current_state, &state);
@@ -876,7 +876,7 @@ int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state)
ret = pci_platform_power_transition(dev, state);
/* Power off the bridge may power off the whole hierarchy */
if (!ret && state == PCI_D3cold)
- __pci_bus_set_current_state(dev->subordinate, PCI_D3cold);
+ pci_bus_set_current_state(dev->...
2019 Oct 16
3
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...o something like this:
>
> pci_set_power_state(D3cold)
> if (PCI_DEV_FLAGS_NO_D3)
> return 0 <-- nothing at 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")...
2019 Oct 21
0
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...tate(D3cold)
> > > if (PCI_DEV_FLAGS_NO_D3)
> > > return 0 <-- nothing at 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)
> > > ...
> > &g...
2019 Oct 21
1
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...t; > pci_set_power_state(D3cold)
> > if (PCI_DEV_FLAGS_NO_D3)
> > return 0 <-- nothing at 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_evalua...
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
...in D3cold on an ACPI
system, we do something like this:
pci_set_power_state(D3cold)
if (PCI_DEV_FLAGS_NO_D3)
return 0 <-- nothing at 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...
2018 Feb 18
12
[PATCH 0/7] Modernize vga_switcheroo by using device link for HDA
Modernize vga_switcheroo by using a "device link" to enforce a runtime PM
dependency from an HDA controller to the GPU it's integrated into.
Remove thereby obsoleted code and fix a bunch of bugs.
Device links were introduced in v4.10.
Users might see a small power saving if the discrete GPU is in use and
its HDA controller is not, because the HDA controller is now allowed
to runtime
2018 Mar 03
12
[PATCH v2 0/7] Modernize vga_switcheroo by using device link for HDA
Modernize vga_switcheroo by using a device link to enforce a runtime PM
dependency from an HDA controller to the GPU it's integrated into, v2.
Changes since v1:
- Replace patch [1/7] to use pci_save_state() / pci_restore_state()
for consistency between runtime PM code path of bound and unbound
devices. (Rafael, Bjorn)
- Patch [5/7]: Drop an unnecessary initialization. (Bjorn)
Rephrase