Power down Thunderbolt controllers on Macs when nothing is plugged in
to save around 2W per controller and fix a power regression introduced
in v3.17 that affects millions of machines (all Macs with Thunderbolt)
Changes since v5:
- Patch [1/8] ("PCI: Recognize Thunderbolt devices"):
Rename set_pcie_vendor_specific() (Bjorn Helgaas)
- Patch [3/8] ("PCI: pciehp: Reinstate runtime PM on Thunderbolt hotplug
ports"): Modified version of reverted patch
- Patch [7/8] ("thunderbolt: Power down controller when idle"):
Add comment explaining use of pr_*() instead of dev_*(), drop unnecessary
initialization (Bjorn Helgaas)
- Polish commit messages
Link to v5:
https://lkml.org/lkml/2017/1/15/180
Browse the patches on GitHub:
https://github.com/l1k/linux/commits/thunderbolt_runpm_v6
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: pciehp: Reinstate runtime PM on Thunderbolt 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/hotplug/pciehp_ctrl.c | 13 +-
drivers/pci/pci.c | 20 ++-
drivers/pci/pci.h | 2 +
drivers/pci/probe.c | 32 ++++
drivers/thunderbolt/Kconfig | 3 +-
drivers/thunderbolt/Makefile | 4 +-
drivers/thunderbolt/nhi.c | 5 +
drivers/thunderbolt/power.c | 359 ++++++++++++++++++++++++++++++++++++++
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 +
17 files changed, 515 insertions(+), 17 deletions(-)
create mode 100644 drivers/thunderbolt/power.c
create mode 100644 drivers/thunderbolt/power.h
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2.11.0
