update atheros 2.6 port - add support for the older chip generation

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@6265 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 98 insertions, 0 deletions

diff --git a/target/linux/atheros-2.6/files/arch/mips/atheros/irq.c b/target/linux/atheros-2.6/files/arch/mips/atheros/irq.c
new file mode 100644
index 000000000..99d960b41
--- /dev/null
+++ b/target/linux/atheros-2.6/files/arch/mips/atheros/irq.c
@@ -0,0 +1,98 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+/*
+ * Interrupt support for AR531X WiSOC.
+ */
+
+#include <linux/autoconf.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/pm.h>
+#include <linux/delay.h>
+#include <linux/reboot.h>
+#include <linux/irq.h>
+#include <asm/bootinfo.h>
+#include <asm/mipsregs.h>
+#include <asm/irq_cpu.h>
+#include "ar531x.h"
+
+
+/* ARGSUSED */
+irqreturn_t
+spurious_irq_handler(int cpl, void *dev_id)
+{
+    /* 
+    printk("spurious_irq_handler: %d  cause=0x%8.8x  status=0x%8.8x\n",
+	   cpl, cause_intrs, status_intrs); 
+    */
+	return IRQ_NONE;
+}
+
+/* ARGSUSED */
+irqreturn_t
+spurious_misc_handler(int cpl, void *dev_id)
+{
+    /*
+    printk("spurious_misc_handler: 0x%x isr=0x%8.8x imr=0x%8.8x\n",
+	   cpl, ar531x_isr, ar531x_imr);
+    */
+	return IRQ_NONE;
+}
+
+static struct irqaction spurious_irq  = {
+	.handler	= spurious_irq_handler,
+	.flags		= SA_INTERRUPT,
+	.name		= "spurious_irq",
+};
+
+static struct irqaction spurious_misc  = {
+	.handler	= spurious_misc_handler,
+	.flags		= SA_INTERRUPT,
+	.name		= "spurious_misc",
+};
+
+asmlinkage void plat_irq_dispatch(void)
+{
+#ifdef CONFIG_ATHEROS_AR5312
+	if (mips_machtype == MACH_ATHEROS_AR5312)
+		ar5312_irq_dispatch();
+#endif
+#ifdef CONFIG_ATHEROS_AR5315
+	if (mips_machtype == MACH_ATHEROS_AR5315)
+		ar5315_irq_dispatch();
+#endif
+}
+
+void __init arch_init_irq(void)
+{
+	clear_c0_status(ST0_IM);
+	mips_cpu_irq_init(0);
+
+	/* Initialize interrupt controllers */
+#ifdef CONFIG_ATHEROS_AR5312
+	if (mips_machtype == MACH_ATHEROS_AR5312)
+		ar5312_misc_intr_init(AR531X_MISC_IRQ_BASE);
+#endif
+#ifdef CONFIG_ATHEROS_AR5315
+	if (mips_machtype == MACH_ATHEROS_AR5315)
+		ar5315_misc_intr_init(AR531X_MISC_IRQ_BASE);
+#endif
+
+	/* Default "spurious interrupt" handlers */
+	setup_irq(AR531X_IRQ_NONE, &spurious_irq);
+	setup_irq(AR531X_MISC_IRQ_NONE, &spurious_misc);
+}