From 91808a81fe7cc8a786b575ebc2d102c59d83c1a7 Mon Sep 17 00:00:00 2001 From: Abhijit Pagare Date: Mon, 22 Feb 2010 22:09:07 -0700 Subject: [PATCH] ARM: OMAP4 clock domain: Add check for avoiding dependency related update. A check is added for avoiding the sleep/wakeup dependency updates for OMAP4 as the structures for the dependencies are currently absent. Signed-off-by: Abhijit Pagare [paul@pwsan.com: added warnings, explanatory comment, copyright update] Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/clockdomain.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index a38a615b422f..de4278c19029 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -1,8 +1,8 @@ /* * OMAP2/3/4 clockdomain framework functions * - * Copyright (C) 2008-2009 Texas Instruments, Inc. - * Copyright (C) 2008-2009 Nokia Corporation + * Copyright (C) 2008-2010 Texas Instruments, Inc. + * Copyright (C) 2008-2010 Nokia Corporation * * Written by Paul Walmsley and Jouni Högander * Added OMAP4 specific support by Abhijit Pagare @@ -891,8 +891,17 @@ void omap2_clkdm_allow_idle(struct clockdomain *clkdm) pr_debug("clockdomain: enabling automatic idle transitions for %s\n", clkdm->name); - if (atomic_read(&clkdm->usecount) > 0) - _clkdm_add_autodeps(clkdm); + /* + * XXX This should be removed once TI adds wakeup/sleep + * dependency code and data for OMAP4. + */ + if (cpu_is_omap44xx()) { + WARN_ONCE(1, "clockdomain: OMAP4 wakeup/sleep dependency " + "support is not yet implemented\n"); + } else { + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_add_autodeps(clkdm); + } _omap2_clkdm_set_hwsup(clkdm, 1); @@ -924,8 +933,17 @@ void omap2_clkdm_deny_idle(struct clockdomain *clkdm) _omap2_clkdm_set_hwsup(clkdm, 0); - if (atomic_read(&clkdm->usecount) > 0) - _clkdm_del_autodeps(clkdm); + /* + * XXX This should be removed once TI adds wakeup/sleep + * dependency code and data for OMAP4. + */ + if (cpu_is_omap44xx()) { + WARN_ONCE(1, "clockdomain: OMAP4 wakeup/sleep dependency " + "support is not yet implemented\n"); + } else { + if (atomic_read(&clkdm->usecount) > 0) + _clkdm_del_autodeps(clkdm); + } }