Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/arch/arm/mach-pxa/mfp.c
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*
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* PXA3xx Multi-Function Pin Support
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*
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* Copyright (C) 2007 Marvell Internation Ltd.
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*
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* 2007-08-21: eric miao <eric.miao@marvell.com>
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* initial version
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/syscore_ops.h>
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#include "mfp-pxa3xx.h"
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#include "pxa3xx-regs.h"
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#ifdef CONFIG_PM
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/*
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* Configure the MFPs appropriately for suspend/resume.
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* FIXME: this should probably depend on which system state we're
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* entering - for instance, we might not want to place MFP pins in
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* a pull-down mode if they're an active low chip select, and we're
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* just entering standby.
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*/
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static int pxa3xx_mfp_suspend(void *data)
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{
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mfp_config_lpm();
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return 0;
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}
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static void pxa3xx_mfp_resume(void *data)
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{
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mfp_config_run();
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/* clear RDH bit when MFP settings are restored
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*
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* NOTE: the last 3 bits DxS are write-1-to-clear so carefully
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* preserve them here in case they will be referenced later
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*/
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ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
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}
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#else
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#define pxa3xx_mfp_suspend NULL
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#define pxa3xx_mfp_resume NULL
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#endif
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static const struct syscore_ops pxa3xx_mfp_syscore_ops = {
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.suspend = pxa3xx_mfp_suspend,
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.resume = pxa3xx_mfp_resume,
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};
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struct syscore pxa3xx_mfp_syscore = {
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.ops = &pxa3xx_mfp_syscore_ops,
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};
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