Manivannan Sadhasivam ad9b9b6e36 PCI: qcom: Add support for system suspend and resume ... During the system suspend, vote for minimal interconnect bandwidth (1KiB) to keep the interconnect path active for config access and also turn OFF the resources like clock and PHY if there are no active devices connected to the controller. For the controllers with active devices, the resources are kept ON as removing the resources will trigger access violation during the late end of suspend cycle as kernel tries to access the config space of PCIe devices to mask the MSIs. Also, it is not desirable to put the link into L2/L3 state as that implies VDD supply will be removed and the devices may go into powerdown state. This will affect the lifetime of storage devices like NVMe. And finally, during resume, turn ON the resources if the controller was truly suspended (resources OFF) and update the interconnect bandwidth based on PCIe Gen speed. Suggested-by: Krishna chaitanya chundru <quic_krichai@quicinc.com> Link: https://lore.kernel.org/r/20230403154922.20704-2-manivannan.sadhasivam@linaro.org Tested-by: Johan Hovold <johan+linaro@kernel.org> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Acked-by: Dhruva Gole <d-gole@ti.com>		2023-04-12 08:48:53 +02:00
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controller	PCI: qcom: Add support for system suspend and resume	2023-04-12 08:48:53 +02:00
endpoint	Merge branch 'pci/misc'	2023-02-22 13:47:32 -06:00
hotplug	Merge branch 'pci/kbuild'	2023-02-22 13:47:25 -06:00
msi	PCI/MSI: Clarify usage of pci_msix_free_irq()	2023-02-21 08:25:14 +01:00
pcie	pci-v6.3-changes	2023-02-24 16:51:40 -08:00
switch
access.c
ats.c
bus.c
doe.c
ecam.c
host-bridge.c
iov.c
irq.c
Kconfig
Makefile
mmap.c
of.c
p2pdma.c
pci-acpi.c
pci-bridge-emul.c
pci-bridge-emul.h
pci-driver.c	pci-v6.3-changes	2023-02-24 16:51:40 -08:00
pci-label.c
pci-mid.c
pci-pf-stub.c
pci-stub.c
pci-sysfs.c
pci.c	pci-v6.3-changes	2023-02-24 16:51:40 -08:00
pci.h	pci-v6.3-changes	2023-02-24 16:51:40 -08:00
probe.c	cxl for v6.3	2023-02-25 09:19:23 -08:00
proc.c
quirks.c	virtio,vhost,vdpa: features, fixes	2023-02-25 11:48:02 -08:00
remove.c
rom.c
search.c
setup-bus.c
setup-irq.c
setup-res.c
slot.c
syscall.c
vc.c
vgaarb.c
vpd.c
xen-pcifront.c