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MIPS: pci-ar724x: convert into a platform driver 

The patch converts the pci-ar724x driver into a
platform driver. This makes it possible to register
the PCI controller as a plain platform device.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4905/
Signed-off-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
Gabor Juhos 2013-02-02 11:40:42 +00:00 committed by John Crispin
parent d3d2b4200b
commit 58d2e9bcd6
1 changed files with 55 additions and 2 deletions
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57
arch/mips/pci/pci-ar724x.c
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@ -11,6 +11,8 @@
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <asm/mach-ath79/ath79.h> #include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h> #include <asm/mach-ath79/ar71xx_regs.h>
#include <asm/mach-ath79/pci.h> #include <asm/mach-ath79/pci.h>
@ -262,7 +264,7 @@ static struct irq_chip ar724x_pci_irq_chip = {
.irq_mask_ack = ar724x_pci_irq_mask, .irq_mask_ack = ar724x_pci_irq_mask,
}; };
static void __init ar724x_pci_irq_init(int irq) static void ar724x_pci_irq_init(int irq)
{ {
void __iomem *base; void __iomem *base;
int i; int i;
@ -282,7 +284,7 @@ static void __init ar724x_pci_irq_init(int irq)
irq_set_chained_handler(irq, ar724x_pci_irq_handler); irq_set_chained_handler(irq, ar724x_pci_irq_handler);
} }
int __init ar724x_pcibios_init(int irq) int ar724x_pcibios_init(int irq)
{ {
int ret; int ret;
@ -312,3 +314,54 @@ int __init ar724x_pcibios_init(int irq)
err: err:
return ret; return ret;
} }
static int ar724x_pci_probe(struct platform_device *pdev)
{
struct resource *res;
int irq;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl_base");
if (!res)
return -EINVAL;
ar724x_pci_ctrl_base = devm_request_and_ioremap(&pdev->dev, res);
if (ar724x_pci_ctrl_base == NULL)
return -EBUSY;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base");
if (!res)
return -EINVAL;
ar724x_pci_devcfg_base = devm_request_and_ioremap(&pdev->dev, res);
if (!ar724x_pci_devcfg_base)
return -EBUSY;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return -EINVAL;
ar724x_pci_link_up = ar724x_pci_check_link();
if (!ar724x_pci_link_up)
dev_warn(&pdev->dev, "PCIe link is down\n");
ar724x_pci_irq_init(irq);
register_pci_controller(&ar724x_pci_controller);
return 0;
}
static struct platform_driver ar724x_pci_driver = {
.probe = ar724x_pci_probe,
.driver = {
.name = "ar724x-pci",
.owner = THIS_MODULE,
},
};
static int __init ar724x_pci_init(void)
{
return platform_driver_register(&ar724x_pci_driver);
}
postcore_initcall(ar724x_pci_init);