linux-stable/arch/powerpc/sysdev/6xx-suspend.S
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  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

  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 #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

48 lines
902 B
ArmAsm

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Enter and leave sleep state on chips with 6xx-style HID0
* power management bits, which don't leave sleep state via reset.
*
* Author: Scott Wood <scottwood@freescale.com>
*
* Copyright (c) 2006-2007 Freescale Semiconductor, Inc.
*/
#include <asm/ppc_asm.h>
#include <asm/reg.h>
#include <asm/thread_info.h>
#include <asm/asm-offsets.h>
_GLOBAL(mpc6xx_enter_standby)
mflr r4
mfspr r5, SPRN_HID0
rlwinm r5, r5, 0, ~(HID0_DOZE | HID0_NAP)
oris r5, r5, HID0_SLEEP@h
mtspr SPRN_HID0, r5
isync
lis r5, ret_from_standby@h
ori r5, r5, ret_from_standby@l
mtlr r5
lwz r6, TI_LOCAL_FLAGS(r2)
ori r6, r6, _TLF_SLEEPING
stw r6, TI_LOCAL_FLAGS(r2)
mfmsr r5
ori r5, r5, MSR_EE
oris r5, r5, MSR_POW@h
sync
mtmsr r5
isync
1: b 1b
ret_from_standby:
mfspr r5, SPRN_HID0
rlwinm r5, r5, 0, ~HID0_SLEEP
mtspr SPRN_HID0, r5
mtlr r4
blr