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102 lines
2.6 KiB
102 lines
2.6 KiB
From 42541838d9fdbad8573141d69cf8e38831a6cbb6 Mon Sep 17 00:00:00 2001
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From: Gabor Juhos <juhosg@openwrt.org>
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Date: Sat, 2 Feb 2013 11:40:42 +0000
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Subject: [PATCH] MIPS: pci-ar724x: convert into a platform driver
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commit 58d2e9bcd682d76bcb9575dc56c85f1d82a81bfa upstream.
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The patch converts the pci-ar724x driver into a
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platform driver. This makes it possible to register
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the PCI controller as a plain platform device.
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Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
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Patchwork: http://patchwork.linux-mips.org/patch/4905/
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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arch/mips/pci/pci-ar724x.c | 57 ++++++++++++++++++++++++++++++++++++++++++--
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1 file changed, 55 insertions(+), 2 deletions(-)
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--- a/arch/mips/pci/pci-ar724x.c
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+++ b/arch/mips/pci/pci-ar724x.c
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@@ -11,6 +11,8 @@
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#include <linux/irq.h>
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#include <linux/pci.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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#include <asm/mach-ath79/ath79.h>
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#include <asm/mach-ath79/ar71xx_regs.h>
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#include <asm/mach-ath79/pci.h>
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@@ -262,7 +264,7 @@ static struct irq_chip ar724x_pci_irq_ch
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.irq_mask_ack = ar724x_pci_irq_mask,
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};
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-static void __init ar724x_pci_irq_init(int irq)
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+static void ar724x_pci_irq_init(int irq)
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{
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void __iomem *base;
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int i;
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@@ -282,7 +284,7 @@ static void __init ar724x_pci_irq_init(i
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irq_set_chained_handler(irq, ar724x_pci_irq_handler);
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}
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-int __init ar724x_pcibios_init(int irq)
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+int ar724x_pcibios_init(int irq)
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{
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int ret;
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@@ -312,3 +314,54 @@ err_unmap_devcfg:
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err:
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return ret;
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}
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+
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+static int ar724x_pci_probe(struct platform_device *pdev)
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+{
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+ struct resource *res;
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+ int irq;
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+
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+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl_base");
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+ if (!res)
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+ return -EINVAL;
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+
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+ ar724x_pci_ctrl_base = devm_request_and_ioremap(&pdev->dev, res);
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+ if (ar724x_pci_ctrl_base == NULL)
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+ return -EBUSY;
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+
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+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base");
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+ if (!res)
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+ return -EINVAL;
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+
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+ ar724x_pci_devcfg_base = devm_request_and_ioremap(&pdev->dev, res);
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+ if (!ar724x_pci_devcfg_base)
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+ return -EBUSY;
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+
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+ irq = platform_get_irq(pdev, 0);
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+ if (irq < 0)
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+ return -EINVAL;
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+
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+ ar724x_pci_link_up = ar724x_pci_check_link();
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+ if (!ar724x_pci_link_up)
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+ dev_warn(&pdev->dev, "PCIe link is down\n");
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+
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+ ar724x_pci_irq_init(irq);
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+
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+ register_pci_controller(&ar724x_pci_controller);
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+
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+ return 0;
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+}
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+
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+static struct platform_driver ar724x_pci_driver = {
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+ .probe = ar724x_pci_probe,
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+ .driver = {
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+ .name = "ar724x-pci",
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+ .owner = THIS_MODULE,
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+ },
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+};
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+
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+static int __init ar724x_pci_init(void)
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+{
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+ return platform_driver_register(&ar724x_pci_driver);
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+}
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+
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+postcore_initcall(ar724x_pci_init);
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