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linux-next/arch/arm/mach-imx/mx1-camera-fiq.S
Uwe Kleine-König 074694956b ARM: imx: move mx1 support to mach-imx
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2010-06-30 08:59:44 +02:00

36 lines
880 B
ArmAsm

/*
* Copyright (C) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* Based on linux/arch/arm/lib/floppydma.S
* Copyright (C) 1995, 1996 Russell King
*
* 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/linkage.h>
#include <asm/assembler.h>
.text
.global mx1_camera_sof_fiq_end
.global mx1_camera_sof_fiq_start
mx1_camera_sof_fiq_start:
@ enable dma
ldr r12, [r9]
orr r12, r12, #0x00000001
str r12, [r9]
@ unmask DMA interrupt
ldr r12, [r8]
bic r12, r12, r13
str r12, [r8]
@ disable SOF interrupt
ldr r12, [r10]
bic r12, r12, #0x00010000
str r12, [r10]
@ clear SOF flag
mov r12, #0x00010000
str r12, [r11]
@ return from FIQ
subs pc, lr, #4
mx1_camera_sof_fiq_end: