patch-2.4.19 linux-2.4.19/arch/arm/mach-clps711x/irq.c

• Lines: 139
• Date: Fri Aug 2 17:39:42 2002
• Orig file: linux-2.4.18/arch/arm/mach-clps711x/irq.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/arm/mach-clps711x/irq.c linux-2.4.19/arch/arm/mach-clps711x/irq.c
@@ -0,0 +1,138 @@
+/*
+ *  linux/arch/arm/mach-clps711x/irq.c
+ *
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * 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/init.h>
+
+#include <asm/mach/irq.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include <asm/hardware/clps7111.h>
+
+static void mask_irq_int1(unsigned int irq)
+{
+	u32 intmr1;
+
+	intmr1 = clps_readl(INTMR1);
+	intmr1 &= ~(1 << irq);
+	clps_writel(intmr1, INTMR1);
+}
+
+static void mask_ack_irq_int1(unsigned int irq)
+{
+	u32 intmr1;
+
+	intmr1 = clps_readl(INTMR1);
+	intmr1 &= ~(1 << irq);
+	clps_writel(intmr1, INTMR1);
+
+	switch (irq) {
+	case IRQ_CSINT:  clps_writel(0, COEOI);  break;
+	case IRQ_TC1OI:  clps_writel(0, TC1EOI); break;
+	case IRQ_TC2OI:  clps_writel(0, TC2EOI); break;
+	case IRQ_RTCMI:  clps_writel(0, RTCEOI); break;
+	case IRQ_TINT:   clps_writel(0, TEOI);   break;
+	case IRQ_UMSINT: clps_writel(0, UMSEOI); break;
+	}
+}
+
+static void unmask_irq_int1(unsigned int irq)
+{
+	u32 intmr1;
+
+	intmr1 = clps_readl(INTMR1);
+	intmr1 |= 1 << irq;
+	clps_writel(intmr1, INTMR1);
+}
+
+static void mask_irq_int2(unsigned int irq)
+{
+	u32 intmr2;
+
+	intmr2 = clps_readl(INTMR2);
+	intmr2 &= ~(1 << (irq - 16));
+	clps_writel(intmr2, INTMR2);
+}
+
+static void mask_ack_irq_int2(unsigned int irq)
+{
+	u32 intmr2;
+
+	intmr2 = clps_readl(INTMR2);
+	intmr2 &= ~(1 << (irq - 16));
+	clps_writel(intmr2, INTMR2);
+
+	switch (irq) {
+	case IRQ_KBDINT: clps_writel(0, KBDEOI); break;
+	}
+}
+
+static void unmask_irq_int2(unsigned int irq)
+{
+	u32 intmr2;
+
+	intmr2 = clps_readl(INTMR2);
+	intmr2 |= 1 << (irq - 16);
+	clps_writel(intmr2, INTMR2);
+}
+
+void __init clps711x_init_irq(void)
+{
+	unsigned int i;
+
+	for (i = 0; i < NR_IRQS; i++) {
+	        if (INT1_IRQS & (1 << i)) {
+		        irq_desc[i].valid	= 1;
+			irq_desc[i].probe_ok	= 1;
+			irq_desc[i].mask_ack	= (INT1_ACK_IRQS & (1 << i)) ?
+						   mask_ack_irq_int1 :
+						   mask_irq_int1;
+			irq_desc[i].mask	= mask_irq_int1;
+			irq_desc[i].unmask	= unmask_irq_int1;
+		}
+		if (INT2_IRQS & (1 << i)) {
+		        irq_desc[i].valid	= 1;
+			irq_desc[i].probe_ok	= 1;
+			irq_desc[i].mask_ack	= (INT2_ACK_IRQS & (1 << i)) ?
+						   mask_ack_irq_int2 :
+						   mask_irq_int2;
+			irq_desc[i].mask	= mask_irq_int2;
+			irq_desc[i].unmask	= unmask_irq_int2;
+		}			
+	}
+
+	/*
+	 * Disable interrupts
+	 */
+	clps_writel(0, INTMR1);
+	clps_writel(0, INTMR2);
+
+	/*
+	 * Clear down any pending interrupts
+	 */
+	clps_writel(0, COEOI);
+	clps_writel(0, TC1EOI);
+	clps_writel(0, TC2EOI);
+	clps_writel(0, RTCEOI);
+	clps_writel(0, TEOI);
+	clps_writel(0, UMSEOI);
+	clps_writel(0, SYNCIO);
+	clps_writel(0, KBDEOI);
+}