Release 4.11 arch/arm/mach-pxa/mfp-pxa3xx.c

/*
 * 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
 *
 *  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.
 */

#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;
}

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Russell King
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Eric Miao
2
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1
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Rafael J. Wysocki
1
7.14%
1
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3
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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);
}
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Russell King
7
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2
8.00%
1
25.00%
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25
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4
100.00%

#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,
};
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2
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6
6.25%
1
10.00%
Arnd Bergmann
1
1.04%
1
10.00%
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96
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10
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Directory: arch/arm/mach-pxa

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