Added missing tegra files.HEADmaster

3 files changed, 111 insertions, 0 deletions

diff --git a/arch/arm/plat-versatile/fpga-irq.c b/arch/arm/plat-versatile/fpga-irq.c
new file mode 100644
index 00000000000..f0cc8e19b09
--- /dev/null
+++ b/arch/arm/plat-versatile/fpga-irq.c
@@ -0,0 +1,72 @@
+/*
+ *  Support for Versatile FPGA-based IRQ controllers
+ */
+#include <linux/irq.h>
+#include <linux/io.h>
+
+#include <asm/mach/irq.h>
+#include <plat/fpga-irq.h>
+
+#define IRQ_STATUS              0x00
+#define IRQ_RAW_STATUS          0x04
+#define IRQ_ENABLE_SET          0x08
+#define IRQ_ENABLE_CLEAR        0x0c
+
+static void fpga_irq_mask(struct irq_data *d)
+{
+        struct fpga_irq_data *f = irq_data_get_irq_chip_data(d);
+        u32 mask = 1 << (d->irq - f->irq_start);
+
+        writel(mask, f->base + IRQ_ENABLE_CLEAR);
+}
+
+static void fpga_irq_unmask(struct irq_data *d)
+{
+        struct fpga_irq_data *f = irq_data_get_irq_chip_data(d);
+        u32 mask = 1 << (d->irq - f->irq_start);
+
+        writel(mask, f->base + IRQ_ENABLE_SET);
+}
+
+static void fpga_irq_handle(unsigned int irq, struct irq_desc *desc)
+{
+        struct fpga_irq_data *f = irq_desc_get_handler_data(desc);
+        u32 status = readl(f->base + IRQ_STATUS);
+
+        if (status == 0) {
+                do_bad_IRQ(irq, desc);
+                return;
+        }
+
+        do {
+                irq = ffs(status) - 1;
+                status &= ~(1 << irq);
+
+                generic_handle_irq(irq + f->irq_start);
+        } while (status);
+}
+
+void __init fpga_irq_init(int parent_irq, u32 valid, struct fpga_irq_data *f)
+{
+        unsigned int i;
+
+        f->chip.irq_ack = fpga_irq_mask;
+        f->chip.irq_mask = fpga_irq_mask;
+        f->chip.irq_unmask = fpga_irq_unmask;
+
+        if (parent_irq != -1) {
+                irq_set_handler_data(parent_irq, f);
+                irq_set_chained_handler(parent_irq, fpga_irq_handle);
+        }
+
+        for (i = 0; i < 32; i++) {
+                if (valid & (1 << i)) {
+                        unsigned int irq = f->irq_start + i;
+
+                        irq_set_chip_data(irq, f);
+                        irq_set_chip_and_handler(irq, &f->chip,
+                                                 handle_level_irq);
+                        set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+                }
+        }
+}
diff --git a/arch/arm/plat-versatile/include/plat/fpga-irq.h b/arch/arm/plat-versatile/include/plat/fpga-irq.h
new file mode 100644
index 00000000000..627fafd1e59
--- /dev/null
+++ b/arch/arm/plat-versatile/include/plat/fpga-irq.h
@@ -0,0 +1,12 @@
+#ifndef PLAT_FPGA_IRQ_H
+#define PLAT_FPGA_IRQ_H
+
+struct fpga_irq_data {
+        void __iomem *base;
+        unsigned int irq_start;
+        struct irq_chip chip;
+};
+
+void fpga_irq_init(int, u32, struct fpga_irq_data *);
+
+#endif
diff --git a/arch/arm/plat-versatile/localtimer.c b/arch/arm/plat-versatile/localtimer.c
new file mode 100644
index 00000000000..0fb3961999b
--- /dev/null
+++ b/arch/arm/plat-versatile/localtimer.c
@@ -0,0 +1,27 @@
+/*
+ *  linux/arch/arm/plat-versatile/localtimer.c
+ *
+ *  Copyright (C) 2002 ARM Ltd.
+ *  All Rights Reserved
+ *
+ * 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/smp.h>
+#include <linux/clockchips.h>
+
+#include <asm/smp_twd.h>
+#include <asm/localtimer.h>
+#include <mach/irqs.h>
+
+/*
+ * Setup the local clock events for a CPU.
+ */
+int __cpuinit local_timer_setup(struct clock_event_device *evt)
+{
+        evt->irq = IRQ_LOCALTIMER;
+        twd_timer_setup(evt);
+        return 0;
+}