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linux/drivers/pci/controller
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Richard Zhu 3bbc3c72c4 PCI: imx6: Save and restore root port MSI control in suspend and resume 
The imx6 PCI host controller suffers from a HW integration bug whereby
the MSI enable bit in the root port MSI capability enables/disables MSIs
interrupts for all downstream components in the PCI tree.

This requires, as implemented in

75cb8d20c1 ("PCI: imx: Enable MSI from downstream components")

that the root port MSI enable bit should be set in order for downstream
PCI devices MSIs to function.

The MSI enable bit programming might be lost during the suspend and
should be re-stored during resume.

Save the MSI control during suspend and restore it in resume.

Link: https://lore.kernel.org/r/1670479534-22154-1-git-send-email-hongxing.zhu@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
[lpieralisi@kernel.org: commit log]
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
2023-06-19 11:16:54 +02:00
..
cadence PCI: Use consistent controller Kconfig menu entry language 2023-04-20 16:18:04 -05:00
dwc PCI: imx6: Save and restore root port MSI control in suspend and resume 2023-06-19 11:16:54 +02:00
mobiveil PCI: mobiveil: Sort Kconfig entries by vendor 2023-04-20 16:18:05 -05:00
Kconfig PCI: xilinx: Drop obsolete dependency on COMPILE_TEST 2023-04-20 16:18:05 -05:00
Makefile Merge branch 'pci/host/mt7621' 2021-11-05 11:28:51 -05:00
pci-aardvark.c PCI: aardvark: Switch to using devm_gpiod_get_optional() 2022-12-07 08:19:53 -06:00
pci-ftpci100.c PCI: Drop of_match_ptr() to avoid unused variables 2022-11-17 13:32:21 -06:00
pci-host-common.c PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains 2021-04-20 14:11:22 +01:00
pci-host-generic.c PCI: Unify ECAM constants in native PCI Express drivers 2020-12-10 14:55:49 -06:00
pci-hyperv-intf.c PCI: hv: Add a Hyper-V PCI interface driver for software backchannel interface 2019-08-22 00:25:12 -07:00
pci-hyperv.c PCI: hv: Replace retarget_msi_interrupt_params with hyperv_pcpu_input_arg 2023-04-21 21:25:23 +00:00
pci-ixp4xx.c PCI: ixp4xx: Use PCI_CONF1_ADDRESS() macro 2023-03-24 16:48:32 +01:00
pci-loongson.c PCI: loongson: Add more devices that need MRRS quirk 2023-02-13 15:29:27 -06:00
pci-mvebu.c Merge branch 'pci/kbuild' 2022-12-10 10:36:52 -06:00
pci-rcar-gen2.c PCI: rcar-gen2: Add RZ/N1 SOC family compatible string 2022-06-23 17:37:05 -05:00
pci-tegra.c PCI: Use of_property_present() for testing DT property presence 2023-04-18 16:01:37 -05:00
pci-thunder-ecam.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-thunder-pem.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-v3-semi.c PCI: Drop of_match_ptr() to avoid unused variables 2022-11-17 13:32:21 -06:00
pci-versatile.c PCI: Remove MODULE_LICENSE so boolean drivers don't look like modules 2023-02-17 08:47:58 -06:00
pci-xgene-msi.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pci-xgene.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-altera-msi.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-altera.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-apple.c PCI: apple: Do not leak reset GPIO on unbind/unload/error 2022-09-14 17:45:47 +02:00
pcie-brcmstb.c PCI: brcmstb: Set RCB_{MPS,64B}_MODE bits 2022-11-11 11:42:05 +01:00
pcie-hisi-error.c PCI: Remove MODULE_LICENSE so boolean drivers don't look like modules 2023-02-17 08:47:58 -06:00
pcie-iproc-bcma.c PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
pcie-iproc-msi.c PCI: iproc: Use bitmap API to allocate bitmaps 2022-07-05 15:02:56 -05:00
pcie-iproc-platform.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-iproc.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-iproc.h PCI: Fix kernel-doc formatting 2021-07-06 10:37:46 -05:00
pcie-mediatek-gen3.c PCI: mediatek-gen3: Change driver name to mtk-pcie-gen3 2022-08-23 14:58:49 +02:00
pcie-mediatek.c PCI: Use of_property_present() for testing DT property presence 2023-04-18 16:01:37 -05:00
pcie-microchip-host.c PCI: Remove MODULE_LICENSE so boolean drivers don't look like modules 2023-02-17 08:47:58 -06:00
pcie-mt7621.c PCI: mt7621: Use dev_info() to log PCIe card detection 2023-03-24 16:36:22 +01:00
pcie-rcar-ep.c PCI: rcar-ep: Remove unneeded includes 2021-10-08 09:41:38 -05:00
pcie-rcar-host.c PCI: rcar: Avoid defines prefixed with CONFIG 2023-03-10 13:34:27 +01:00
pcie-rcar.c PCI: rcar: Fix calculating mask for PCIEPAMR register 2020-05-11 11:29:48 +01:00
pcie-rcar.h PCI: rcar: Avoid defines prefixed with CONFIG 2023-03-10 13:34:27 +01:00
pcie-rockchip-ep.c PCI: rockchip: Fix find_first_zero_bit() limit 2022-04-08 14:42:07 +01:00
pcie-rockchip-host.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-rockchip.c PCI: rockchip: Make 'ep-gpios' DT property optional 2021-02-23 14:23:50 -06:00
pcie-rockchip.h PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
pcie-xilinx-cpm.c PCI: Remove unnecessary <linux/of_irq.h> includes 2022-11-10 14:53:51 -06:00
pcie-xilinx-nwl.c Merge branch 'pci/kbuild' 2022-12-10 10:36:52 -06:00
pcie-xilinx.c PCI: xilinx: Rename xilinx_pcie_port to xilinx_pcie 2022-01-03 15:05:28 -06:00
vmd.c PCI: vmd: Add quirk to configure PCIe ASPM and LTR 2023-02-02 16:02:40 +01:00