Commit fc99b331 authored by Hou Zhiqiang's avatar Hou Zhiqiang Committed by Lorenzo Pieralisi
Browse files

PCI: mobiveil: Add callback function for link up check 



Platforms integrating the Mobiveil GPEX can implement a specific
mechanism to check the link status.

Add a callback to enable platform specific link status functions.

Signed-off-by: default avatarHou Zhiqiang <Zhiqiang.Hou@nxp.com>
[lorenzo.pieralisi@arm.com: updated log]
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: default avatarAndrew Murray <andrew.murray@arm.com>
parent ed620e96

drivers/pci/controller/mobiveil/pcie-mobiveil.c

+3 −0
Original line number Diff line number Diff line
@@ -125,6 +125,9 @@ void mobiveil_csr_write(struct mobiveil_pcie *pcie, u32 val, u32 off, 


bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie)

{

	if (pcie->ops->link_up)

		return pcie->ops->link_up(pcie);



	return (mobiveil_csr_readl(pcie, LTSSM_STATUS) &

		LTSSM_STATUS_L0_MASK) == LTSSM_STATUS_L0;

}

drivers/pci/controller/mobiveil/pcie-mobiveil.h

+5 −0
Original line number Diff line number Diff line
@@ -148,6 +148,10 @@ struct mobiveil_root_port { 
	struct pci_host_bridge *bridge;

};



struct mobiveil_pab_ops {

	int (*link_up)(struct mobiveil_pcie *pcie);

};



struct mobiveil_pcie {

	struct platform_device *pdev;

	void __iomem *csr_axi_slave_base;	/* root port config base */
@@ -157,6 +161,7 @@ struct mobiveil_pcie { 
	int ppio_wins;

	int ob_wins_configured;		/* configured outbound windows */

	int ib_wins_configured;		/* configured inbound windows */

	const struct mobiveil_pab_ops *ops;

	struct mobiveil_root_port rp;

};

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