[PATCH 16/19] ARM: OMAP4 clock domain: Add check for avoiding dependency related update.

Paul Walmsley
2010-02-16T01:27:00Z

From: Abhijit Pagare <abhijitpagare@ti.com>

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 <abhijitpagare@ti.com>
[paul@pwsan.com: added warnings, explanatory comment, copyright update]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
arch/arm/mach-omap2/clockdomain.c | 30 ++++++++++++++++++++++++------
1 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index a38a615..de4278c 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 <abhijitpagare@ti.com>
@@ -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);
+ }
}

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