From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/arm/mach-pxa/mfp-pxa3xx.c | 59 +++++++++++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 kernel/arch/arm/mach-pxa/mfp-pxa3xx.c (limited to 'kernel/arch/arm/mach-pxa/mfp-pxa3xx.c') diff --git a/kernel/arch/arm/mach-pxa/mfp-pxa3xx.c b/kernel/arch/arm/mach-pxa/mfp-pxa3xx.c new file mode 100644 index 000000000..89863a01e --- /dev/null +++ b/kernel/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 1.2.3-korg