diff options
Diffstat (limited to 'arch/arm/mach-davinci/irq.c')
-rw-r--r-- | arch/arm/mach-davinci/irq.c | 117 |
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); -} |