Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 158 insertions, 0 deletions

diff --git a/arch/arm/mach-lh7a40x/irq-lh7a404.c b/arch/arm/mach-lh7a40x/irq-lh7a404.c
new file mode 100644
index 00000000000..122fadabc97
--- /dev/null
+++ b/arch/arm/mach-lh7a40x/irq-lh7a404.c
@@ -0,0 +1,158 @@
+/* arch/arm/mach-lh7a40x/irq-lh7a404.c
+ *
+ *  Copyright (C) 2004 Logic Product Development
+ *
+ *  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/module.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <asm/arch/irq.h>
+#include <asm/arch/irqs.h>
+
+#define USE_PRIORITIES
+
+/* See Documentation/arm/Sharp-LH/VectoredInterruptController for more
+ * information on using the vectored interrupt controller's
+ * prioritizing feature. */
+
+static unsigned char irq_pri_vic1[] = {
+#if defined (USE_PRIORITIES)
+IRQ_GPIO3INTR,
+#endif
+};
+static unsigned char irq_pri_vic2[] = {
+#if defined (USE_PRIORITIES)
+	IRQ_T3UI, IRQ_GPIO7INTR,
+	IRQ_UART1INTR, IRQ_UART2INTR, IRQ_UART3INTR,
+#endif
+};
+
+  /* CPU IRQ handling */
+
+static void lh7a404_vic1_mask_irq (u32 irq)
+{
+	VIC1_INTENCLR = (1 << irq);
+}
+
+static void lh7a404_vic1_unmask_irq (u32 irq)
+{
+	VIC1_INTEN = (1 << irq);
+}
+
+static void lh7a404_vic2_mask_irq (u32 irq)
+{
+	VIC2_INTENCLR = (1 << (irq - 32));
+}
+
+static void lh7a404_vic2_unmask_irq (u32 irq)
+{
+	VIC2_INTEN = (1 << (irq - 32));
+}
+
+static void lh7a404_vic1_ack_gpio_irq (u32 irq)
+{
+	GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq));
+	VIC1_INTENCLR = (1 << irq);
+}
+
+static void lh7a404_vic2_ack_gpio_irq (u32 irq)
+{
+	GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq));
+	VIC2_INTENCLR = (1 << irq);
+}
+
+static struct irqchip lh7a404_vic1_chip = {
+	.ack	= lh7a404_vic1_mask_irq, /* Because level-triggered */
+	.mask	= lh7a404_vic1_mask_irq,
+	.unmask	= lh7a404_vic1_unmask_irq,
+};
+
+static struct irqchip lh7a404_vic2_chip = {
+	.ack	= lh7a404_vic2_mask_irq, /* Because level-triggered */
+	.mask	= lh7a404_vic2_mask_irq,
+	.unmask	= lh7a404_vic2_unmask_irq,
+};
+
+static struct irqchip lh7a404_gpio_vic1_chip = {
+	.ack	= lh7a404_vic1_ack_gpio_irq,
+	.mask	= lh7a404_vic1_mask_irq,
+	.unmask	= lh7a404_vic1_unmask_irq,
+};
+
+static struct irqchip lh7a404_gpio_vic2_chip = {
+	.ack	= lh7a404_vic2_ack_gpio_irq,
+	.mask	= lh7a404_vic2_mask_irq,
+	.unmask	= lh7a404_vic2_unmask_irq,
+};
+
+  /* IRQ initialization */
+
+void __init lh7a404_init_irq (void)
+{
+	int irq;
+
+	VIC1_INTENCLR = 0xffffffff;
+	VIC2_INTENCLR = 0xffffffff;
+	VIC1_INTSEL = 0;		/* All IRQs */
+	VIC2_INTSEL = 0;		/* All IRQs */
+	VIC1_NVADDR = VA_VIC1DEFAULT;
+	VIC2_NVADDR = VA_VIC2DEFAULT;
+	VIC1_VECTADDR = 0;
+	VIC2_VECTADDR = 0;
+
+	GPIO_GPIOFINTEN = 0x00;		/* Disable all GPIOF interrupts */
+	barrier ();
+
+		/* Install prioritized interrupts, if there are any. */
+		/* The | 0x20*/
+	for (irq = 0; irq < 16; ++irq) {
+		(&VIC1_VAD0)[irq]
+			= (irq < ARRAY_SIZE (irq_pri_vic1))
+			? (irq_pri_vic1[irq] | VA_VECTORED) : 0;
+		(&VIC1_VECTCNTL0)[irq]
+			= (irq < ARRAY_SIZE (irq_pri_vic1))
+			? (irq_pri_vic1[irq] | VIC_CNTL_ENABLE) : 0;
+		(&VIC2_VAD0)[irq]
+			= (irq < ARRAY_SIZE (irq_pri_vic2))
+			? (irq_pri_vic2[irq] | VA_VECTORED) : 0;
+		(&VIC2_VECTCNTL0)[irq]
+			= (irq < ARRAY_SIZE (irq_pri_vic2))
+			? (irq_pri_vic2[irq] | VIC_CNTL_ENABLE) : 0;
+	}
+
+	for (irq = 0; irq < NR_IRQS; ++irq) {
+		switch (irq) {
+		case IRQ_GPIO0INTR:
+		case IRQ_GPIO1INTR:
+		case IRQ_GPIO2INTR:
+		case IRQ_GPIO3INTR:
+		case IRQ_GPIO4INTR:
+		case IRQ_GPIO5INTR:
+		case IRQ_GPIO6INTR:
+		case IRQ_GPIO7INTR:
+			set_irq_chip (irq, irq < 32
+				      ? &lh7a404_gpio_vic1_chip
+				      : &lh7a404_gpio_vic2_chip);
+			set_irq_handler (irq, do_level_IRQ); /* OK default */
+			break;
+		default:
+			set_irq_chip (irq, irq < 32
+				      ? &lh7a404_vic1_chip
+				      : &lh7a404_vic2_chip);
+			set_irq_handler (irq, do_level_IRQ);
+		}
+		set_irq_flags (irq, IRQF_VALID);
+	}
+
+	lh7a40x_init_board_irq ();
+}