Power down Thunderbolt controllers on Macs when nothing is plugged in to save around 2W per controller.
For background info please see the cover letter of v3: https://lkml.org/lkml/2016/12/17/56 Patches [1/8] to [3/8] need an ack from Bjorn and/or Rafael. Patches [4/8] to [6/8] need an ack from Rafael. Patches [7/8] to [8/8] need an ack from Andreas. Changes since v4: - Patch [2/8] has been reviewed by Mika. (Thanks!) - Patch [3/8] now uses a separate helper function instead of stuffing its code into pci_dev_check_d3cold(), as requested by Mika. As usual the patches can be reviewed/fetched on GitHub: https://github.com/l1k/linux/commits/thunderbolt_runpm_v5 Thanks, Lukas Chen Yu (1): PM / sleep: Define constant for direct_complete Lukas Wunner (7): PCI: Recognize Thunderbolt devices PCI: Allow runtime PM on Thunderbolt ports PCI: Don't block runtime PM for Thunderbolt host hotplug ports Revert "PM / Runtime: Remove the exported function pm_children_suspended()" PM: Make requirements of dev_pm_domain_set() more precise thunderbolt: Power down controller when idle thunderbolt: Runtime suspend NHI when idle drivers/base/power/common.c | 15 +- drivers/base/power/runtime.c | 3 +- drivers/pci/pci.c | 27 +++- drivers/pci/pci.h | 2 + drivers/pci/probe.c | 34 +++++ drivers/thunderbolt/Kconfig | 3 +- drivers/thunderbolt/Makefile | 4 +- drivers/thunderbolt/nhi.c | 5 + drivers/thunderbolt/power.c | 355 +++++++++++++++++++++++++++++++++++++++++++ drivers/thunderbolt/power.h | 37 +++++ drivers/thunderbolt/switch.c | 9 ++ drivers/thunderbolt/tb.c | 13 ++ drivers/thunderbolt/tb.h | 2 + include/linux/pci.h | 1 + include/linux/pm.h | 7 + include/linux/pm_runtime.h | 7 + 16 files changed, 513 insertions(+), 11 deletions(-) create mode 100644 drivers/thunderbolt/power.c create mode 100644 drivers/thunderbolt/power.h -- 2.11.0
