LXR linux/arch/arm/mach-imx/mx1-camera-fiq.S

   1/*
   2 *  Copyright (C) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
   3 *
   4 *  Based on linux/arch/arm/lib/floppydma.S
   5 *      Copyright (C) 1995, 1996 Russell King
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11#include <linux/linkage.h>
  12#include <asm/assembler.h>
  13
  14                .text
  15                .global mx1_camera_sof_fiq_end
  16                .global mx1_camera_sof_fiq_start
  17mx1_camera_sof_fiq_start:
  18                @ enable dma
  19                ldr     r12, [r9]
  20                orr     r12, r12, #0x00000001
  21                str     r12, [r9]
  22                @ unmask DMA interrupt
  23                ldr     r12, [r8]
  24                bic     r12, r12, r13
  25                str     r12, [r8]
  26                @ disable SOF interrupt
  27                ldr     r12, [r10]
  28                bic     r12, r12, #0x00010000
  29                str     r12, [r10]
  30                @ clear SOF flag
  31                mov     r12, #0x00010000
  32                str     r12, [r11]
  33                @ return from FIQ
  34                subs    pc, lr, #4
  35mx1_camera_sof_fiq_end:
  36