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/*
* arch/arm/mach-tegra/sleep.S
*
* Copyright (c) 2010-2011, NVIDIA Corporation.
* Copyright (c) 2011, Google, Inc.
*
* Author: Colin Cross <ccross@android.com>
* Gary King <gking@nvidia.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
#include <asm/cp15.h>
#include "iomap.h"
#include "flowctrl.h"
#include "sleep.h"
#ifdef CONFIG_PM_SLEEP
/*
* tegra_disable_clean_inv_dcache
*
* disable, clean & invalidate the D-cache
*
* Corrupted registers: r1-r3, r6, r8, r9-r11
*/
ENTRY(tegra_disable_clean_inv_dcache)
stmfd sp!, {r0, r4-r5, r7, r9-r11, lr}
dmb @ ensure ordering
/* Disable the D-cache */
mrc p15, 0, r2, c1, c0, 0
bic r2, r2, #CR_C
mcr p15, 0, r2, c1, c0, 0
isb
/* Flush the D-cache */
bl v7_flush_dcache_louis
/* Trun off coherency */
exit_smp r4, r5
ldmfd sp!, {r0, r4-r5, r7, r9-r11, pc}
ENDPROC(tegra_disable_clean_inv_dcache)
#endif
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