1/*
 2 * linux/arch/arm/mach-pxa/mfp.c
 3 *
 4 * PXA3xx Multi-Function Pin Support
 5 *
 6 * Copyright (C) 2007 Marvell Internation Ltd.
 7 *
 8 * 2007-08-21: eric miao <eric.miao@marvell.com>
 9 *             initial version
10 *
11 *  This program is free software; you can redistribute it and/or modify
12 *  it under the terms of the GNU General Public License version 2 as
13 *  published by the Free Software Foundation.
14 */
15
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/io.h>
20#include <linux/syscore_ops.h>
21
22#include <mach/hardware.h>
23#include <mach/mfp-pxa3xx.h>
24#include <mach/pxa3xx-regs.h>
25
26#ifdef CONFIG_PM
27/*
28 * Configure the MFPs appropriately for suspend/resume.
29 * FIXME: this should probably depend on which system state we're
30 * entering - for instance, we might not want to place MFP pins in
31 * a pull-down mode if they're an active low chip select, and we're
32 * just entering standby.
33 */
34static int pxa3xx_mfp_suspend(void)
35{
36	mfp_config_lpm();
37	return 0;
38}
39
40static void pxa3xx_mfp_resume(void)
41{
42	mfp_config_run();
43
44	/* clear RDH bit when MFP settings are restored
45	 *
46	 * NOTE: the last 3 bits DxS are write-1-to-clear so carefully
47	 * preserve them here in case they will be referenced later
48	 */
49	ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
50}
51#else
52#define pxa3xx_mfp_suspend	NULL
53#define pxa3xx_mfp_resume	NULL
54#endif
55
56struct syscore_ops pxa3xx_mfp_syscore_ops = {
57	.suspend	= pxa3xx_mfp_suspend,
58	.resume		= pxa3xx_mfp_resume,
59};

 1/*
 2 * linux/arch/arm/mach-pxa/mfp.c
 3 *
 4 * PXA3xx Multi-Function Pin Support
 5 *
 6 * Copyright (C) 2007 Marvell Internation Ltd.
 7 *
 8 * 2007-08-21: eric miao <eric.miao@marvell.com>
 9 *             initial version
10 *
11 *  This program is free software; you can redistribute it and/or modify
12 *  it under the terms of the GNU General Public License version 2 as
13 *  published by the Free Software Foundation.
14 */
15
16#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/init.h>
19#include <linux/io.h>
20#include <linux/syscore_ops.h>
21
22#include <mach/hardware.h>
23#include <mach/mfp-pxa3xx.h>
24#include <mach/pxa3xx-regs.h>
25
26#ifdef CONFIG_PM
27/*
28 * Configure the MFPs appropriately for suspend/resume.
29 * FIXME: this should probably depend on which system state we're
30 * entering - for instance, we might not want to place MFP pins in
31 * a pull-down mode if they're an active low chip select, and we're
32 * just entering standby.
33 */
34static int pxa3xx_mfp_suspend(void)
35{
36	mfp_config_lpm();
37	return 0;
38}
39
40static void pxa3xx_mfp_resume(void)
41{
42	mfp_config_run();
43
44	/* clear RDH bit when MFP settings are restored
45	 *
46	 * NOTE: the last 3 bits DxS are write-1-to-clear so carefully
47	 * preserve them here in case they will be referenced later
48	 */
49	ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
50}
51#else
52#define pxa3xx_mfp_suspend	NULL
53#define pxa3xx_mfp_resume	NULL
54#endif
55
56struct syscore_ops pxa3xx_mfp_syscore_ops = {
57	.suspend	= pxa3xx_mfp_suspend,
58	.resume		= pxa3xx_mfp_resume,
59};