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MIPS: pci-ar71xx: convert into a platform driver

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The patch converts the pci-ar71xx 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/4906/
Signed-off-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
Gabor Juhos 2013-02-02 11:40:43 +00:00 committed by John Crispin
parent 58d2e9bcd6
commit fb167e891d
1 changed files with 56 additions and 4 deletions
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60
arch/mips/pci/pci-ar71xx.c
View file

@ -18,6 +18,8 @@
#include <linux/pci.h>
#include <linux/pci_regs.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include <asm/mach-ath79/ath79.h>
@ -309,7 +311,7 @@ static struct irq_chip ar71xx_pci_irq_chip = {
.irq_mask_ack = ar71xx_pci_irq_mask,
};
static __init void ar71xx_pci_irq_init(void)
static void ar71xx_pci_irq_init(int irq)
{
void __iomem *base = ath79_reset_base;
int i;
@ -324,10 +326,10 @@ static __init void ar71xx_pci_irq_init(void)
irq_set_chip_and_handler(i, &ar71xx_pci_irq_chip,
handle_level_irq);
irq_set_chained_handler(ATH79_CPU_IRQ_IP2, ar71xx_pci_irq_handler);
irq_set_chained_handler(irq, ar71xx_pci_irq_handler);
}
static __init void ar71xx_pci_reset(void)
static void ar71xx_pci_reset(void)
{
void __iomem *ddr_base = ath79_ddr_base;
@ -367,9 +369,59 @@ __init int ar71xx_pcibios_init(void)
/* clear bus errors */
ar71xx_pci_check_error(1);
ar71xx_pci_irq_init();
ar71xx_pci_irq_init(ATH79_CPU_IRQ_IP2);
register_pci_controller(&ar71xx_pci_controller);
return 0;
}
static int ar71xx_pci_probe(struct platform_device *pdev)
{
struct resource *res;
int irq;
u32 t;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base");
if (!res)
return -EINVAL;
ar71xx_pcicfg_base = devm_request_and_ioremap(&pdev->dev, res);
if (!ar71xx_pcicfg_base)
return -ENOMEM;
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return -EINVAL;
ar71xx_pci_reset();
/* setup COMMAND register */
t = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE
| PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK;
ar71xx_pci_local_write(PCI_COMMAND, 4, t);
/* clear bus errors */
ar71xx_pci_check_error(1);
ar71xx_pci_irq_init(irq);
register_pci_controller(&ar71xx_pci_controller);
return 0;
}
static struct platform_driver ar71xx_pci_driver = {
.probe = ar71xx_pci_probe,
.driver = {
.name = "ar71xx-pci",
.owner = THIS_MODULE,
},
};
static int __init ar71xx_pci_init(void)
{
return platform_driver_register(&ar71xx_pci_driver);
}
postcore_initcall(ar71xx_pci_init);