This commit was manufactured by cvs2svn to create branch 'fedora'.

[linux-2.6.git] / arch / arm / mach-pxa / mainstone.c

diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
new file mode 100644 (file)
index 0000000..cd7da1d
--- /dev/null
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -0,0 +1,139 @@
+/*
+ *  linux/arch/arm/mach-pxa/mainstone.c
+ *
+ *  Support for the Intel HCDDBBVA0 Development Platform.
+ *  (go figure how they came up with such name...)
+ *
+ *  Author:    Nicolas Pitre
+ *  Created:   Nov 05, 2002
+ *  Copyright: MontaVista Software Inc.
+ *
+ *  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/init.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/bitops.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "generic.h"
+
+
+static unsigned long mainstone_irq_enabled;
+
+static void mainstone_mask_irq(unsigned int irq)
+{
+       int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+       MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
+}
+
+static void mainstone_unmask_irq(unsigned int irq)
+{
+       int mainstone_irq = (irq - MAINSTONE_IRQ(0));
+       /* the irq can be acknowledged only if deasserted, so it's done here */
+       MST_INTSETCLR &= ~(1 << mainstone_irq);
+       MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
+}
+
+static struct irqchip mainstone_irq_chip = {
+       .ack            = mainstone_mask_irq,
+       .mask           = mainstone_mask_irq,
+       .unmask         = mainstone_unmask_irq,
+};
+
+
+static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
+                                 struct pt_regs *regs)
+{
+       unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
+       do {
+               GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
+               if (likely(pending)) {
+                       irq = MAINSTONE_IRQ(0) + __ffs(pending);
+                       desc = irq_desc + irq;
+                       desc->handle(irq, desc, regs);
+               }
+               pending = MST_INTSETCLR & mainstone_irq_enabled;
+       } while (pending);
+}
+
+static void __init mainstone_init_irq(void)
+{
+       int irq;
+
+       pxa_init_irq();
+
+       /* setup extra Mainstone irqs */
+       for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
+               set_irq_chip(irq, &mainstone_irq_chip);
+               set_irq_handler(irq, do_level_IRQ);
+               set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+       }
+       set_irq_flags(MAINSTONE_IRQ(8), 0);
+       set_irq_flags(MAINSTONE_IRQ(12), 0);
+
+       MST_INTMSKENA = 0;
+       MST_INTSETCLR = 0;
+
+       set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
+       set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
+}
+
+
+static struct resource smc91x_resources[] = {
+       [0] = {
+               .start  = (MST_ETH_PHYS + 0x300),
+               .end    = (MST_ETH_PHYS + 0xfffff),
+               .flags  = IORESOURCE_MEM,
+       },
+       [1] = {
+               .start  = MAINSTONE_IRQ(3),
+               .end    = MAINSTONE_IRQ(3),
+               .flags  = IORESOURCE_IRQ,
+       }
+};
+
+static struct platform_device smc91x_device = {
+       .name           = "smc91x",
+       .id             = 0,
+       .num_resources  = ARRAY_SIZE(smc91x_resources),
+       .resource       = smc91x_resources,
+};
+
+static void __init mainstone_init(void)
+{
+       platform_add_device(&smc91x_device);
+}
+
+
+static struct map_desc mainstone_io_desc[] __initdata = {
+  { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
+};
+
+static void __init mainstone_map_io(void)
+{
+       pxa_map_io();
+       iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
+}
+
+MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
+       MAINTAINER("MontaVista Software Inc.")
+       BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
+       MAPIO(mainstone_map_io)
+       INITIRQ(mainstone_init_irq)
+       INIT_MACHINE(mainstone_init)
+MACHINE_END