Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arm / mach-ixp4xx / gtwx5715-pci.c

diff --git a/kernel/arch/arm/mach-ixp4xx/gtwx5715-pci.c b/kernel/arch/arm/mach-ixp4xx/gtwx5715-pci.c
new file mode 100644 (file)
index 0000000..551d114
--- /dev/null
+++ b/kernel/arch/arm/mach-ixp4xx/gtwx5715-pci.c
@@ -0,0 +1,84 @@
+/*
+ * 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 <linux/irq.h>
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <asm/mach/pci.h>
+
+#define SLOT0_DEVID    0
+#define SLOT1_DEVID    1
+#define INTA           10 /* slot 1 has INTA and INTB crossed */
+#define INTB           11
+
+/*
+ * 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.
+ */
+void __init gtwx5715_pci_preinit(void)
+{
+       irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW);
+       irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW);
+       ixp4xx_pci_preinit();
+}
+
+
+static int __init gtwx5715_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+       int rc = -1;
+
+       if ((slot == SLOT0_DEVID && pin == 1) ||
+           (slot == SLOT1_DEVID && pin == 2))
+               rc = IXP4XX_GPIO_IRQ(INTA);
+       else if ((slot == SLOT0_DEVID && pin == 2) ||
+                (slot == SLOT1_DEVID && pin == 1))
+               rc = IXP4XX_GPIO_IRQ(INTB);
+
+       printk(KERN_INFO "%s: Mapped slot %d pin %d to IRQ %d\n",
+              __func__, slot, pin, rc);
+       return rc;
+}
+
+struct hw_pci gtwx5715_pci __initdata = {
+       .nr_controllers = 1,
+       .ops            = &ixp4xx_ops,
+       .preinit =        gtwx5715_pci_preinit,
+       .setup =          ixp4xx_setup,
+       .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);