ar71xx: use backported PCI patches

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>

SVN-Revision: 35877

1 files changed, 112 insertions, 0 deletions

diff --git a/target/linux/ar71xx/patches-3.8/011-MIPS-pci-ar71xx-convert-into-a-platform-driver.patch b/target/linux/ar71xx/patches-3.8/011-MIPS-pci-ar71xx-convert-into-a-platform-driver.patch
new file mode 100644
index 0000000000..e6bd8d0c41
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.8/011-MIPS-pci-ar71xx-convert-into-a-platform-driver.patch
@@ -0,0 +1,112 @@
+From 060c9a226a25e044167e877d9830ec53f836da9e Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Sat, 2 Feb 2013 11:40:43 +0000
+Subject: [PATCH] MIPS: pci-ar71xx: convert into a platform driver
+
+commit fb167e891d5cc6386840dd092af2d461b38eb802 upstream.
+
+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>
+---
+ arch/mips/pci/pci-ar71xx.c |   60 +++++++++++++++++++++++++++++++++++++++++---
+ 1 file changed, 56 insertions(+), 4 deletions(-)
+
+--- a/arch/mips/pci/pci-ar71xx.c
++++ b/arch/mips/pci/pci-ar71xx.c
+@@ -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_ch
+ 	.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(v
+ 		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);