From 060c9a226a25e044167e877d9830ec53f836da9e Mon Sep 17 00:00:00 2001 From: Gabor Juhos 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 Patchwork: http://patchwork.linux-mips.org/patch/4906/ Signed-off-by: John Crispin --- 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 #include #include +#include +#include #include #include @@ -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);