diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2019-10-05 15:04:36 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-10-15 22:25:58 +0300 |
| commit | aff5d0552da4055da3faa27ee4252e48bb1f5821 (patch) | |
| tree | 44a8e2d69df4e24f9d768bfd8db6caf88b58fb49 /drivers/pci/pcie/aspm.c | |
| parent | 5e0c21c75e8c08375a69710527e4a921b897cb7e (diff) | |
| download | linux-aff5d0552da4055da3faa27ee4252e48bb1f5821.tar.xz | |
PCI/ASPM: Add L1 PM substate support to pci_disable_link_state()
Add support for disabling states L1.1 and L1.2 to pci_disable_link_state().
Allow separate control of ASPM and PCI PM L1 substates.
Link: https://lore.kernel.org/r/d81f8036-c236-6463-48e7-ebcdcda85bba@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie/aspm.c')
| -rw-r--r-- | drivers/pci/pcie/aspm.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c index f5c7138a34aa..f8572a523a15 100644 --- a/drivers/pci/pcie/aspm.c +++ b/drivers/pci/pcie/aspm.c @@ -1094,7 +1094,16 @@ static int __pci_disable_link_state(struct pci_dev *pdev, int state, bool sem) if (state & PCIE_LINK_STATE_L0S) link->aspm_disable |= ASPM_STATE_L0S; if (state & PCIE_LINK_STATE_L1) - link->aspm_disable |= ASPM_STATE_L1; + /* L1 PM substates require L1 */ + link->aspm_disable |= ASPM_STATE_L1 | ASPM_STATE_L1SS; + if (state & PCIE_LINK_STATE_L1_1) + link->aspm_disable |= ASPM_STATE_L1_1; + if (state & PCIE_LINK_STATE_L1_2) + link->aspm_disable |= ASPM_STATE_L1_2; + if (state & PCIE_LINK_STATE_L1_1_PCIPM) + link->aspm_disable |= ASPM_STATE_L1_1_PCIPM; + if (state & PCIE_LINK_STATE_L1_2_PCIPM) + link->aspm_disable |= ASPM_STATE_L1_2_PCIPM; pcie_config_aspm_link(link, policy_to_aspm_state(link)); if (state & PCIE_LINK_STATE_CLKPM) { |