diff options
Diffstat (limited to 'arch/arm/mach-iop32x/irq.c')
-rw-r--r-- | arch/arm/mach-iop32x/irq.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c deleted file mode 100644 index 6dca7e97d81f..000000000000 --- a/arch/arm/mach-iop32x/irq.c +++ /dev/null @@ -1,95 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * arch/arm/mach-iop32x/irq.c - * - * Generic IOP32X IRQ handling functionality - * - * Author: Rory Bolt <rorybolt@pacbell.net> - * Copyright (C) 2002 Rory Bolt - */ - -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/list.h> -#include <asm/mach/irq.h> -#include <asm/irq.h> -#include <asm/mach-types.h> - -#include "hardware.h" - -static u32 iop32x_mask; - -static void intctl_write(u32 val) -{ - asm volatile("mcr p6, 0, %0, c0, c0, 0" : : "r" (val)); -} - -static void intstr_write(u32 val) -{ - asm volatile("mcr p6, 0, %0, c4, c0, 0" : : "r" (val)); -} - -static u32 iintsrc_read(void) -{ - int irq; - - asm volatile("mrc p6, 0, %0, c8, c0, 0" : "=r" (irq)); - - return irq; -} - -static void -iop32x_irq_mask(struct irq_data *d) -{ - iop32x_mask &= ~(1 << (d->irq - 1)); - intctl_write(iop32x_mask); -} - -static void -iop32x_irq_unmask(struct irq_data *d) -{ - iop32x_mask |= 1 << (d->irq - 1); - intctl_write(iop32x_mask); -} - -struct irq_chip ext_chip = { - .name = "IOP32x", - .irq_ack = iop32x_irq_mask, - .irq_mask = iop32x_irq_mask, - .irq_unmask = iop32x_irq_unmask, -}; - -static void iop_handle_irq(struct pt_regs *regs) -{ - u32 mask; - - iop_enable_cp6(); - - do { - mask = iintsrc_read(); - if (mask) - generic_handle_irq(fls(mask)); - } while (mask); -} - -void __init iop32x_init_irq(void) -{ - int i; - - iop_init_cp6_handler(); - set_handle_irq(iop_handle_irq); - - intctl_write(0); - intstr_write(0); - if (machine_is_glantank() || - machine_is_iq80321() || - machine_is_iq31244() || - machine_is_n2100() || - machine_is_em7210()) - *IOP3XX_PCIIRSR = 0x0f; - - for (i = 1; i < NR_IRQS; i++) { - irq_set_chip_and_handler(i, &ext_chip, handle_level_irq); - irq_clear_status_flags(i, IRQ_NOREQUEST | IRQ_NOPROBE); - } -} |