From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 15 Nov 2014 09:58:27 +0800 Subject: init android origin source code --- ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c | 59 ++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c (limited to 'ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c') diff --git a/ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c b/ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c new file mode 100644 index 00000000..89863a01 --- /dev/null +++ b/ANDROID_3.4.5/arch/arm/mach-pxa/mfp-pxa3xx.c @@ -0,0 +1,59 @@ +/* + * linux/arch/arm/mach-pxa/mfp.c + * + * PXA3xx Multi-Function Pin Support + * + * Copyright (C) 2007 Marvell Internation Ltd. + * + * 2007-08-21: eric miao + * 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 +#include +#include +#include +#include + +#include +#include +#include + +#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, +}; -- cgit