threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
53 lines
1.1 KiB
ArmAsm
53 lines
1.1 KiB
ArmAsm
/*
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* Enter and leave sleep state on chips with 6xx-style HID0
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* power management bits, which don't leave sleep state via reset.
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*
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* Author: Scott Wood <scottwood@freescale.com>
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*
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* Copyright (c) 2006-2007 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include <asm/ppc_asm.h>
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#include <asm/reg.h>
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#include <asm/thread_info.h>
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#include <asm/asm-offsets.h>
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_GLOBAL(mpc6xx_enter_standby)
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mflr r4
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mfspr r5, SPRN_HID0
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rlwinm r5, r5, 0, ~(HID0_DOZE | HID0_NAP)
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oris r5, r5, HID0_SLEEP@h
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mtspr SPRN_HID0, r5
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isync
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lis r5, ret_from_standby@h
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ori r5, r5, ret_from_standby@l
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mtlr r5
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CURRENT_THREAD_INFO(r5, r1)
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lwz r6, TI_LOCAL_FLAGS(r5)
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ori r6, r6, _TLF_SLEEPING
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stw r6, TI_LOCAL_FLAGS(r5)
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mfmsr r5
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ori r5, r5, MSR_EE
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oris r5, r5, MSR_POW@h
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sync
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mtmsr r5
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isync
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1: b 1b
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ret_from_standby:
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mfspr r5, SPRN_HID0
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rlwinm r5, r5, 0, ~HID0_SLEEP
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mtspr SPRN_HID0, r5
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mtlr r4
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blr
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