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Subject[PATCHv10 05/13] PCI: mobiveil: Add callback function for interrupt initialization
Date
From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

The Mobiveil GPEX internal MSI/INTx controller may not be used
by other platforms in which the Mobiveil GPEX is integrated.
This patch is to allow these platforms to implement their
specific interrupt initialization.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
---
V10:
- Introduced a helper function mobiveil_pcie_integrated_interrupt_init().

drivers/pci/controller/mobiveil/pcie-mobiveil-host.c | 12 +++++++++++-
drivers/pci/controller/mobiveil/pcie-mobiveil.h | 7 +++++++
2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
index ea90d2f8692e..53ab8412a1de 100644
--- a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
+++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c
@@ -499,7 +499,7 @@ static int mobiveil_pcie_init_irq_domain(struct mobiveil_pcie *pcie)
return 0;
}

-static int mobiveil_pcie_interrupt_init(struct mobiveil_pcie *pcie)
+static int mobiveil_pcie_integrated_interrupt_init(struct mobiveil_pcie *pcie)
{
struct platform_device *pdev = pcie->pdev;
struct device *dev = &pdev->dev;
@@ -539,6 +539,16 @@ static int mobiveil_pcie_interrupt_init(struct mobiveil_pcie *pcie)
return 0;
}

+static int mobiveil_pcie_interrupt_init(struct mobiveil_pcie *pcie)
+{
+ struct mobiveil_root_port *rp = &pcie->rp;
+
+ if (rp->ops->interrupt_init)
+ return rp->ops->interrupt_init(pcie);
+
+ return mobiveil_pcie_integrated_interrupt_init(pcie);
+}
+
int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
{
struct mobiveil_root_port *rp = &pcie->rp;
diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
index 81ffbbd48c08..0e6b5468c026 100644
--- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
+++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
@@ -130,10 +130,17 @@ struct mobiveil_msi { /* MSI information */
DECLARE_BITMAP(msi_irq_in_use, PCI_NUM_MSI);
};

+struct mobiveil_pcie;
+
+struct mobiveil_rp_ops {
+ int (*interrupt_init)(struct mobiveil_pcie *pcie);
+};
+
struct mobiveil_root_port {
char root_bus_nr;
void __iomem *config_axi_slave_base; /* endpoint config base */
struct resource *ob_io_res;
+ struct mobiveil_rp_ops *ops;
int irq;
raw_spinlock_t intx_mask_lock;
struct irq_domain *intx_domain;
--
2.17.1
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