[ARM] 4033/1: Add separate Avila board setup code

This patch adds support for the Gateworks Avila Network Platform in
a separate set of setup files to the IXDP425. This is necessary now
that a driver for the Avila CF card slot is available. It also adds
support for a minor variant on the Avila board known as the Loft,
which has a different number of maximum PCI devices.

Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 78 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c
new file mode 100644
index 000000000000..3f867691d9f2
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/avila-pci.c
@@ -0,0 +1,78 @@
+/*
+ * arch/arm/mach-ixp4xx/avila-pci.c
+ *
+ * Gateworks Avila board-level PCI initialization
+ *
+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
+ *
+ * Based on ixdp-pci.c
+ * Copyright (C) 2002 Intel Corporation.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * 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 <linux/irq.h>
+#include <linux/delay.h>
+
+#include <asm/mach/pci.h>
+#include <asm/irq.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+void __init avila_pci_preinit(void)
+{
+        set_irq_type(IRQ_AVILA_PCI_INTA, IRQT_LOW);
+        set_irq_type(IRQ_AVILA_PCI_INTB, IRQT_LOW);
+        set_irq_type(IRQ_AVILA_PCI_INTC, IRQT_LOW);
+        set_irq_type(IRQ_AVILA_PCI_INTD, IRQT_LOW);
+
+        ixp4xx_pci_preinit();
+}
+
+static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        static int pci_irq_table[AVILA_PCI_IRQ_LINES] = {
+                IRQ_AVILA_PCI_INTA,
+                IRQ_AVILA_PCI_INTB,
+                IRQ_AVILA_PCI_INTC,
+                IRQ_AVILA_PCI_INTD
+        };
+
+        int irq = -1;
+
+        if (slot >= 1 &&
+        slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) &&
+                pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) {
+                irq = pci_irq_table[(slot + pin - 2) % 4];
+        }
+
+        return irq;
+}
+
+struct hw_pci avila_pci __initdata = {
+        .nr_controllers = 1,
+        .preinit        = avila_pci_preinit,
+        .swizzle        = pci_std_swizzle,
+        .setup          = ixp4xx_setup,
+        .scan           = ixp4xx_scan_bus,
+        .map_irq        = avila_map_irq,
+};
+
+int __init avila_pci_init(void)
+{
+        if (machine_is_avila() || machine_is_loft())
+                pci_common_init(&avila_pci);
+        return 0;
+}
+
+subsys_initcall(avila_pci_init);
+