diff options
Diffstat (limited to 'arch/arm/plat-omap/clock.c')
| -rw-r--r-- | arch/arm/plat-omap/clock.c | 31 |
1 files changed, 28 insertions, 3 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 32ec04c58bcd..f1179ad4be1b 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -11,7 +11,6 @@ * published by the Free Software Foundation. */ #include <linux/version.h> -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> @@ -28,9 +27,9 @@ #include <asm/arch/clock.h> -LIST_HEAD(clocks); +static LIST_HEAD(clocks); static DEFINE_MUTEX(clocks_mutex); -DEFINE_SPINLOCK(clockfw_lock); +static DEFINE_SPINLOCK(clockfw_lock); static struct clk_functions *arch_clock; @@ -101,6 +100,7 @@ void clk_disable(struct clk *clk) return; spin_lock_irqsave(&clockfw_lock, flags); + BUG_ON(clk->usecount == 0); if (arch_clock->clk_disable) arch_clock->clk_disable(clk); spin_unlock_irqrestore(&clockfw_lock, flags); @@ -323,6 +323,31 @@ EXPORT_SYMBOL(clk_allow_idle); /*-------------------------------------------------------------------------*/ +#ifdef CONFIG_OMAP_RESET_CLOCKS +/* + * Disable any unused clocks left on by the bootloader + */ +static int __init clk_disable_unused(void) +{ + struct clk *ck; + unsigned long flags; + + list_for_each_entry(ck, &clocks, node) { + if (ck->usecount > 0 || (ck->flags & ALWAYS_ENABLED) || + ck->enable_reg == 0) + continue; + + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_disable_unused) + arch_clock->clk_disable_unused(ck); + spin_unlock_irqrestore(&clockfw_lock, flags); + } + + return 0; +} +late_initcall(clk_disable_unused); +#endif + int __init clk_init(struct clk_functions * custom_clocks) { if (!custom_clocks) { |
