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Subject[PATCH v2 1/3] PCI: dwc: Add map irq callback
Date
Certain platforms like Intel need to configure
registers to enable the interrupts.
Map Irq callback helps to perform platform specific
configurations while assigning or enabling the interrupts.

Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
---
changes on v2:
Addressing review comments to use if else {} instead of ternary operator
to improver code readability.

drivers/pci/controller/dwc/pcie-designware-host.c | 6 +++++-
drivers/pci/controller/dwc/pcie-designware.h | 1 +
2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index f93252d0da5b..ca7b40ff5c94 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -470,9 +470,13 @@ int dw_pcie_host_init(struct pcie_port *pp)
bridge->sysdata = pp;
bridge->busnr = pp->root_bus_nr;
bridge->ops = &dw_pcie_ops;
- bridge->map_irq = of_irq_parse_and_map_pci;
bridge->swizzle_irq = pci_common_swizzle;

+ if (pp->map_irq)
+ bridge->map_irq = pp->map_irq;
+ else
+ bridge->map_irq = of_irq_parse_and_map_pci;
+
ret = pci_scan_root_bus_bridge(bridge);
if (ret)
goto err_free_msi;
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index ffed084a0b4f..bc3657800dfa 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -173,6 +173,7 @@ struct pcie_port {
struct resource *busn;
int irq;
const struct dw_pcie_host_ops *ops;
+ int (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
int msi_irq;
struct irq_domain *irq_domain;
struct irq_domain *msi_domain;
--
2.11.0
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