aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-davinci/irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-davinci/irq.c')
-rw-r--r--arch/arm/mach-davinci/irq.c117
1 files changed, 0 insertions, 117 deletions
diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c
deleted file mode 100644
index 952dc126c390..000000000000
--- a/arch/arm/mach-davinci/irq.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Interrupt handler for DaVinci boards.
- *
- * Copyright (C) 2006 Texas Instruments.
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <mach/cputype.h>
-#include <mach/common.h>
-#include <asm/mach/irq.h>
-
-#define FIQ_REG0_OFFSET 0x0000
-#define FIQ_REG1_OFFSET 0x0004
-#define IRQ_REG0_OFFSET 0x0008
-#define IRQ_REG1_OFFSET 0x000C
-#define IRQ_ENT_REG0_OFFSET 0x0018
-#define IRQ_ENT_REG1_OFFSET 0x001C
-#define IRQ_INCTL_REG_OFFSET 0x0020
-#define IRQ_EABASE_REG_OFFSET 0x0024
-#define IRQ_INTPRI0_REG_OFFSET 0x0030
-#define IRQ_INTPRI7_REG_OFFSET 0x004C
-
-static inline void davinci_irq_writel(unsigned long value, int offset)
-{
- __raw_writel(value, davinci_intc_base + offset);
-}
-
-static __init void
-davinci_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
-{
- struct irq_chip_generic *gc;
- struct irq_chip_type *ct;
-
- gc = irq_alloc_generic_chip("AINTC", 1, irq_start, base, handle_edge_irq);
- if (!gc) {
- pr_err("%s: irq_alloc_generic_chip for IRQ %u failed\n",
- __func__, irq_start);
- return;
- }
-
- ct = gc->chip_types;
- ct->chip.irq_ack = irq_gc_ack_set_bit;
- ct->chip.irq_mask = irq_gc_mask_clr_bit;
- ct->chip.irq_unmask = irq_gc_mask_set_bit;
-
- ct->regs.ack = IRQ_REG0_OFFSET;
- ct->regs.mask = IRQ_ENT_REG0_OFFSET;
- irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
- IRQ_NOREQUEST | IRQ_NOPROBE, 0);
-}
-
-/* ARM Interrupt Controller Initialization */
-void __init davinci_irq_init(void)
-{
- unsigned i, j;
- const u8 *davinci_def_priorities = davinci_soc_info.intc_irq_prios;
-
- davinci_intc_type = DAVINCI_INTC_TYPE_AINTC;
- davinci_intc_base = ioremap(davinci_soc_info.intc_base, SZ_4K);
- if (WARN_ON(!davinci_intc_base))
- return;
-
- /* Clear all interrupt requests */
- davinci_irq_writel(~0x0, FIQ_REG0_OFFSET);
- davinci_irq_writel(~0x0, FIQ_REG1_OFFSET);
- davinci_irq_writel(~0x0, IRQ_REG0_OFFSET);
- davinci_irq_writel(~0x0, IRQ_REG1_OFFSET);
-
- /* Disable all interrupts */
- davinci_irq_writel(0x0, IRQ_ENT_REG0_OFFSET);
- davinci_irq_writel(0x0, IRQ_ENT_REG1_OFFSET);
-
- /* Interrupts disabled immediately, IRQ entry reflects all */
- davinci_irq_writel(0x0, IRQ_INCTL_REG_OFFSET);
-
- /* we don't use the hardware vector table, just its entry addresses */
- davinci_irq_writel(0, IRQ_EABASE_REG_OFFSET);
-
- /* Clear all interrupt requests */
- davinci_irq_writel(~0x0, FIQ_REG0_OFFSET);
- davinci_irq_writel(~0x0, FIQ_REG1_OFFSET);
- davinci_irq_writel(~0x0, IRQ_REG0_OFFSET);
- davinci_irq_writel(~0x0, IRQ_REG1_OFFSET);
-
- for (i = IRQ_INTPRI0_REG_OFFSET; i <= IRQ_INTPRI7_REG_OFFSET; i += 4) {
- u32 pri;
-
- for (j = 0, pri = 0; j < 32; j += 4, davinci_def_priorities++)
- pri |= (*davinci_def_priorities & 0x07) << j;
- davinci_irq_writel(pri, i);
- }
-
- for (i = 0, j = 0; i < davinci_soc_info.intc_irq_num; i += 32, j += 0x04)
- davinci_alloc_gc(davinci_intc_base + j, i, 32);
-
- irq_set_handler(IRQ_TINT1_TINT34, handle_level_irq);
-}