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@xxxxxxxxxxx>
---
Note:
In order to make the patch simple, the registration
of the corresponding platform device, and the removal
of the ar724x_pcibios_init function is implemented in
subsequent patches.
---
arch/mips/pci/pci-ar724x.c | 57 ++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 55 insertions(+), 2 deletions(-)
diff --git a/arch/mips/pci/pci-ar724x.c b/arch/mips/pci/pci-ar724x.c
index c11c75b..e7aca88b 100644
--- a/arch/mips/pci/pci-ar724x.c
+++ b/arch/mips/pci/pci-ar724x.c
@@ -11,6 +11,8 @@
#include <linux/irq.h>
#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.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,
};
-static void __init ar724x_pci_irq_init(int irq)
+static void ar724x_pci_irq_init(int irq)
{
void __iomem *base;
int i;
@@ -282,7 +284,7 @@ static void __init ar724x_pci_irq_init(int irq)
irq_set_chained_handler(irq, ar724x_pci_irq_handler);
}
-int __init ar724x_pcibios_init(int irq)
+int ar724x_pcibios_init(int irq)
{
int ret;
@@ -312,3 +314,54 @@ err_unmap_devcfg:
err:
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);
--
1.7.10
