linux/arch/arm/mach-pxa/mfp-pxa3xx.c
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

57 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,
};