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PCI: keystone: Perform host initialization in a single function

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No functional change. Instead of having two functions
ks_pcie_add_pcie_port() and ks_pcie_dw_host_init() for initializing
host, have a single function to perform all the host initialization.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Kishon Vijay Abraham I 2019-03-25 15:09:25 +05:30 committed by Lorenzo Pieralisi
parent 47fe944138
commit f3560a9f88
1 changed files with 23 additions and 40 deletions
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63
drivers/pci/controller/dwc/pci-keystone.c
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@ -487,45 +487,6 @@ static int ks_pcie_start_link(struct dw_pcie *pci)
return 0;
}
/**
* ks_pcie_dw_host_init() - initialize host for v3_65 dw hardware
*
* Ioremap the register resources, initialize legacy irq domain
* and call dw_pcie_v3_65_host_init() API to initialize the Keystone
* PCI host controller.
*/
static int __init ks_pcie_dw_host_init(struct keystone_pcie *ks_pcie)
{
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = pci->dev;
struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
/* Index 0 is the config reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pci->dbi_base = devm_pci_remap_cfg_resource(dev, res);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
/*
* We set these same and is used in pcie rd/wr_other_conf
* functions
*/
pp->va_cfg0_base = pci->dbi_base + SPACE0_REMOTE_CFG_OFFSET;
pp->va_cfg1_base = pp->va_cfg0_base;
/* Index 1 is the application reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
ks_pcie->va_app_base = devm_ioremap_resource(dev, res);
if (IS_ERR(ks_pcie->va_app_base))
return PTR_ERR(ks_pcie->va_app_base);
ks_pcie->app = *res;
return dw_pcie_host_init(pp);
}
static void ks_pcie_quirk(struct pci_dev *dev)
{
struct pci_bus *bus = dev->bus;
@ -843,10 +804,32 @@ static int __init ks_pcie_add_pcie_port(struct keystone_pcie *ks_pcie,
struct dw_pcie *pci = ks_pcie->pci;
struct pcie_port *pp = &pci->pp;
struct device *dev = &pdev->dev;
struct resource *res;
int ret;
/* Index 0 is the config reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pci->dbi_base = devm_pci_remap_cfg_resource(dev, res);
if (IS_ERR(pci->dbi_base))
return PTR_ERR(pci->dbi_base);
/*
* We set these same and is used in pcie rd/wr_other_conf
* functions
*/
pp->va_cfg0_base = pci->dbi_base + SPACE0_REMOTE_CFG_OFFSET;
pp->va_cfg1_base = pp->va_cfg0_base;
/* Index 1 is the application reg. space address */
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
ks_pcie->va_app_base = devm_ioremap_resource(dev, res);
if (IS_ERR(ks_pcie->va_app_base))
return PTR_ERR(ks_pcie->va_app_base);
ks_pcie->app = *res;
pp->ops = &ks_pcie_host_ops;
ret = ks_pcie_dw_host_init(ks_pcie);
ret = dw_pcie_host_init(pp);
if (ret) {
dev_err(dev, "failed to initialize host\n");
return ret;