[PATCH v5 0/8] PCI: DWC/Keystone: MSI configuration cleanup

Kishon Vijay Abraham I
2019-03-21T10:00:56Z

This series tries to address the comments discussed in [1] w.r.t
removing Keystone specific callbacks defined in dw_pcie_host_ops.

This series also tries to cleanup the Keystone interrupt handling
part.

Changes from v4:
*) Removed legacy interrupt cleanup patch which uses hierarchy IRQ
domain since TI platform uses edge interrupt for legacy interrupt.
This will be deferred till I get more details from HW team.

Changes from v3:
*) Uses hierarchy IRQ domain for legacy interrupts since there is 1:1
mapping between legacy interrupt and GIC IRQ.
(MSI still depends on the order of IRQs populated in dt).

Changes from v2:
*) Removed patch that modifies ks_pcie_legacy_irq_handler() to check the
IRQ_STATUS of INTA/B/C/D. Lorenzo's comment to create a matrix
LinuxIRQ x INTx will be added in AM654x PCIe support series
*) ks_pcie_legacy_irq_handler() is made to use hwirq to get IRQ offset
instead of virq.
*) default msi_irq_chip is assigned in dw_pcie_host_init() once keystone
assigns its msi_irq_chip
*) Fixed other minor comments from Lorenzo and Bjorn

Changes from v1:
*) Removed "PCI: keystone: Use "dummy_irq_chip" instead of new irqchip
for legacy interrupt handling" from the patch series. It should be
handled differently.

*) Added Gustavo's ACKed by and fixed a commit message.

[1] -> https://patchwork.kernel.org/patch/10681587/

Kishon Vijay Abraham I (8):
PCI: keystone: Cleanup interrupt related macros
PCI: keystone: Add separate functions for configuring MSI and legacy
interrupt
PCI: keystone: Use hwirq to get the MSI IRQ number offset
PCI: keystone: Cleanup ks_pcie_msi_irq_handler
PCI: dwc: Add support to use non default msi_irq_chip
PCI: keystone: Use Keystone specific msi_irq_chip
PCI: dwc: Remove Keystone specific dw_pcie_host_ops
PCI: dwc: Do not write to MSI control registers if the platform
doesn't use it

drivers/pci/controller/dwc/pci-keystone.c | 365 ++++++++++--------
.../pci/controller/dwc/pcie-designware-host.c | 78 ++--
drivers/pci/controller/dwc/pcie-designware.h | 6 +-
3 files changed, 233 insertions(+), 216 deletions(-)