Hi, This series add support for moving PCIe ports to D3hot both runtime and during system suspend. When PCIe port is suspended connected devices are effectively moved to D3cold because their config space is not accessible anymore (and the link may be powered down as well). So we need to make sure the devices are allowed to go to D3cold and, if they are wake capable, can do so from D3cold. Only then we can suspend the port. Patch [3/6] adds support for system suspend of PCIe ports. Since we do not know how well this has been supported in older hardware, enable this only for quite recent hardware (starting from 2015). This can still be disallowed per port as needed by adding entries to pcie_port_configs[]. Patch [4/6] then extends this to allow runtime PM of PCIe ports whenever all connected devices are runtime suspended. Patches [5,6/6] enable runtime PM for recent Intel hardware including Sunrisepoint (Skylake) and Broxton. These are meant to be alternative for patches by Qipeng Zha here: http://www.spinics.net/lists/linux-pci/msg48103.html http://www.spinics.net/lists/linux-pci/msg48104.html The idea how this is supposed to be implemented came from Rafael Wysocki. Mika Westerberg (6): PCI: No need to set d3cold_allowed to PCIe ports PCI: Make __pci_bus_set_current_state() available to other files PCI: Move PCIe ports to D3hot during suspend PCI: Add runtime PM support for PCIe ports PCI: Enable runtime PM for Intel Sunrisepoint PCIe root ports PCI: Enable runtime PM for Intel Broxton PCIe root ports drivers/pci/pci.c | 2 +- drivers/pci/pci.h | 1 + drivers/pci/pcie/portdrv_pci.c | 170 +++++++++++++++++++++++++++++++++++++++-- 3 files changed, 164 insertions(+), 9 deletions(-) -- 2.7.0 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
