diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/coyote-pci.c')
-rw-r--r-- | arch/arm/mach-ixp4xx/coyote-pci.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/coyote-pci.c b/arch/arm/mach-ixp4xx/coyote-pci.c new file mode 100644 index 0000000..afafb42 --- /dev/null +++ b/arch/arm/mach-ixp4xx/coyote-pci.c @@ -0,0 +1,70 @@ +/* + * arch/arch/mach-ixp4xx/coyote-pci.c + * + * PCI setup routines for ADI Engineering Coyote platform + * + * Copyright (C) 2002 Jungo Software Technologies. + * Copyright (C) 2003 MontaVista Softwrae, Inc. + * + * Maintainer: Deepak Saxena <dsaxena@mvista.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> + +#include <asm/mach-types.h> +#include <asm/hardware.h> +#include <asm/irq.h> + +#include <asm/mach/pci.h> + +extern void ixp4xx_pci_preinit(void); +extern int ixp4xx_setup(int nr, struct pci_sys_data *sys); +extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys); + +void __init coyote_pci_preinit(void) +{ + gpio_line_config(COYOTE_PCI_SLOT0_PIN, + IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW); + + gpio_line_config(COYOTE_PCI_SLOT1_PIN, + IXP4XX_GPIO_IN | IXP4XX_GPIO_ACTIVE_LOW); + + gpio_line_isr_clear(COYOTE_PCI_SLOT0_PIN); + gpio_line_isr_clear(COYOTE_PCI_SLOT1_PIN); + + ixp4xx_pci_preinit(); +} + +static int __init coyote_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + if (slot == COYOTE_PCI_SLOT0_DEVID) + return IRQ_COYOTE_PCI_SLOT0; + else if (slot == COYOTE_PCI_SLOT1_DEVID) + return IRQ_COYOTE_PCI_SLOT1; + else return -1; +} + +struct hw_pci coyote_pci __initdata = { + .nr_controllers = 1, + .preinit = coyote_pci_preinit, + .swizzle = pci_std_swizzle, + .setup = ixp4xx_setup, + .scan = ixp4xx_scan_bus, + .map_irq = coyote_map_irq, +}; + +int __init coyote_pci_init(void) +{ + if (machine_is_adi_coyote()) + pci_common_init(&coyote_pci); + return 0; +} + +subsys_initcall(coyote_pci_init); |