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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-pxa/clock.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-pxa/clock.c')
-rw-r--r-- | arch/arm/mach-pxa/clock.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c new file mode 100644 index 00000000..4d466102 --- /dev/null +++ b/arch/arm/mach-pxa/clock.c @@ -0,0 +1,86 @@ +/* + * linux/arch/arm/mach-sa1100/clock.c + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/spinlock.h> +#include <linux/delay.h> +#include <linux/clkdev.h> + +#include "clock.h" + +static DEFINE_SPINLOCK(clocks_lock); + +int clk_enable(struct clk *clk) +{ + unsigned long flags; + + spin_lock_irqsave(&clocks_lock, flags); + if (clk->enabled++ == 0) + clk->ops->enable(clk); + spin_unlock_irqrestore(&clocks_lock, flags); + + if (clk->delay) + udelay(clk->delay); + + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ + unsigned long flags; + + WARN_ON(clk->enabled == 0); + + spin_lock_irqsave(&clocks_lock, flags); + if (--clk->enabled == 0) + clk->ops->disable(clk); + spin_unlock_irqrestore(&clocks_lock, flags); +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + unsigned long rate; + + rate = clk->rate; + if (clk->ops->getrate) + rate = clk->ops->getrate(clk); + + return rate; +} +EXPORT_SYMBOL(clk_get_rate); + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + unsigned long flags; + int ret = -EINVAL; + + if (clk->ops->setrate) { + spin_lock_irqsave(&clocks_lock, flags); + ret = clk->ops->setrate(clk, rate); + spin_unlock_irqrestore(&clocks_lock, flags); + } + + return ret; +} +EXPORT_SYMBOL(clk_set_rate); + +void clk_dummy_enable(struct clk *clk) +{ +} + +void clk_dummy_disable(struct clk *clk) +{ +} + +const struct clkops clk_dummy_ops = { + .enable = clk_dummy_enable, + .disable = clk_dummy_disable, +}; + +struct clk clk_dummy = { + .ops = &clk_dummy_ops, +}; |