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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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36 lines
880 B
ArmAsm
36 lines
880 B
ArmAsm
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/*
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* Copyright (C) 2008 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* Based on linux/arch/arm/lib/floppydma.S
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* Copyright (C) 1995, 1996 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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.text
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.global mx1_camera_sof_fiq_end
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.global mx1_camera_sof_fiq_start
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mx1_camera_sof_fiq_start:
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@ enable dma
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ldr r12, [r9]
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orr r12, r12, #0x00000001
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str r12, [r9]
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@ unmask DMA interrupt
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ldr r12, [r8]
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bic r12, r12, r13
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str r12, [r8]
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@ disable SOF interrupt
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ldr r12, [r10]
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bic r12, r12, #0x00010000
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str r12, [r10]
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@ clear SOF flag
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mov r12, #0x00010000
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str r12, [r11]
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@ return from FIQ
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subs pc, lr, #4
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mx1_camera_sof_fiq_end:
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