linux/drivers/pci/pcie
David E. Box 39850ed510 PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume
The PCI subsystem does not currently save and restore the configuration
space for the Precision Time Measurement (PTM) Extended Capability leading
to the possibility of the feature returning disabled on S3 resume.  This
has been observed on Intel Coffee Lake desktops. Add save/restore of the
PTM control register. This saves the PTM Enable, Root Select, and Effective
Granularity bits.

Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lore.kernel.org/r/20201207223951.19667-1-david.e.box@linux.intel.com
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-12-10 14:43:54 -06:00
..
aer.c pci-v5.9-changes 2020-08-07 18:48:15 -07:00
aer_inject.c PCI: Replace http:// links with https:// 2020-06-30 13:05:09 -05:00
aspm.c PCI/ASPM: Remove struct pcie_link_state.l1ss 2020-10-16 11:21:19 -05:00
bw_notification.c PCI/LINK: Print IRQ number used by port 2020-09-17 12:40:25 -05:00
dpc.c PCI: pciehp: Reduce noisiness on hot removal 2020-09-17 16:22:36 -05:00
edr.c PCI/EDR: Log only ACPI_NOTIFY_DISCONNECT_RECOVER events 2020-04-24 18:33:29 -05:00
err.c PCI/ERR: Clear PCIe Device Status errors only if OS owns AER 2020-07-22 15:41:03 -05:00
Kconfig PCI: Replace http:// links with https:// 2020-06-30 13:05:09 -05:00
Makefile PCI/DPC: Add Error Disconnect Recover (EDR) support 2020-03-28 13:19:04 -05:00
pme.c PCI/PME: Fix kernel-doc of pcie_pme_resume() and pcie_pme_remove() 2020-05-21 15:04:45 -05:00
portdrv.h PCI/AER: Remove HEST/FIRMWARE_FIRST parsing for AER ownership 2020-06-01 12:02:29 -05:00
portdrv_core.c PCI/ERR: Remove service dependency in pcie_do_recovery() 2020-03-28 13:18:54 -05:00
portdrv_pci.c PCI: Use 'pci_channel_state_t' instead of 'enum pci_channel_state' 2020-07-07 17:11:52 -05:00
ptm.c PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume 2020-12-10 14:43:54 -06:00