mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-09 10:09:11 +00:00
d2912cb15b
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>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* linux/arch/arm/mach-pxa/mfp.c
|
|
*
|
|
* PXA3xx Multi-Function Pin Support
|
|
*
|
|
* Copyright (C) 2007 Marvell Internation Ltd.
|
|
*
|
|
* 2007-08-21: eric miao <eric.miao@marvell.com>
|
|
* initial version
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/syscore_ops.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include "mfp-pxa3xx.h"
|
|
#include <mach/pxa3xx-regs.h>
|
|
|
|
#ifdef CONFIG_PM
|
|
/*
|
|
* Configure the MFPs appropriately for suspend/resume.
|
|
* FIXME: this should probably depend on which system state we're
|
|
* entering - for instance, we might not want to place MFP pins in
|
|
* a pull-down mode if they're an active low chip select, and we're
|
|
* just entering standby.
|
|
*/
|
|
static int pxa3xx_mfp_suspend(void)
|
|
{
|
|
mfp_config_lpm();
|
|
return 0;
|
|
}
|
|
|
|
static void pxa3xx_mfp_resume(void)
|
|
{
|
|
mfp_config_run();
|
|
|
|
/* clear RDH bit when MFP settings are restored
|
|
*
|
|
* NOTE: the last 3 bits DxS are write-1-to-clear so carefully
|
|
* preserve them here in case they will be referenced later
|
|
*/
|
|
ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
|
|
}
|
|
#else
|
|
#define pxa3xx_mfp_suspend NULL
|
|
#define pxa3xx_mfp_resume NULL
|
|
#endif
|
|
|
|
struct syscore_ops pxa3xx_mfp_syscore_ops = {
|
|
.suspend = pxa3xx_mfp_suspend,
|
|
.resume = pxa3xx_mfp_resume,
|
|
};
|