1 files changed, 101 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/gtwx5715-pci.c b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
new file mode 100644
index 000000000000..b18035824e3e
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/gtwx5715-pci.c
@@ -0,0 +1,101 @@
+/*
+ * arch/arm/mach-ixp4xx/gtwx5715-pci.c
+ *
+ * Gemtek GTWX5715 (Linksys WRV54G) board setup
+ *
+ * Copyright (C) 2004 George T. Joseph
+ * Derived from Coyote
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/gtwx5715.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);
+
+        /*
+        * The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h
+        * Slot 0 isn't actually populated with a card connector but
+        * we initialize it anyway in case a future version has the
+        * slot populated or someone with good soldering skills has
+        * some free time.
+        */
+
+
+static void gtwx5715_init_gpio(u8 pin, u32 style)
+{
+        gpio_line_config(pin, style | IXP4XX_GPIO_ACTIVE_LOW);
+
+        if (style & IXP4XX_GPIO_IN) gpio_line_isr_clear(pin);
+}
+
+void __init gtwx5715_pci_preinit(void)
+{
+        gtwx5715_init_gpio(GTWX5715_PCI_SLOT0_INTA_GPIO,        IXP4XX_GPIO_IN);
+        gtwx5715_init_gpio(GTWX5715_PCI_SLOT1_INTA_GPIO,        IXP4XX_GPIO_IN);
+
+        ixp4xx_pci_preinit();
+}
+
+
+static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        int rc;
+        static int gtwx5715_irqmap
+                        [GTWX5715_PCI_SLOT_COUNT]
+                        [GTWX5715_PCI_INT_PIN_COUNT] = {
+        {GTWX5715_PCI_SLOT0_INTA_IRQ, GTWX5715_PCI_SLOT0_INTB_IRQ},
+        {GTWX5715_PCI_SLOT1_INTA_IRQ, GTWX5715_PCI_SLOT1_INTB_IRQ},
+};
+
+        if (slot >= GTWX5715_PCI_SLOT_COUNT ||
+                        pin >= GTWX5715_PCI_INT_PIN_COUNT) rc = -1;
+        else
+                rc = gtwx5715_irqmap[slot][pin-1];
+
+        printk("%s: Mapped slot %d pin %d to IRQ %d\n", __FUNCTION__,slot, pin, rc);
+        return(rc);
+}
+
+struct hw_pci gtwx5715_pci __initdata = {
+        .nr_controllers = 1,
+        .preinit =        gtwx5715_pci_preinit,
+        .swizzle =        pci_std_swizzle,
+        .setup =          ixp4xx_setup,
+        .scan =           ixp4xx_scan_bus,
+        .map_irq =        gtwx5715_map_irq,
+};
+
+int __init gtwx5715_pci_init(void)
+{
+        if (machine_is_gtwx5715())
+        {
+                pci_common_init(&gtwx5715_pci);
+        }
+
+        return 0;
+}
+
+subsys_initcall(gtwx5715_pci_init);